Move sequencer sources from blenkernel

This is first step of refactoring task T77580.
Next step will be breaking up files into smaller ones.

Reviewed By: sergey, brecht

Differential Revision: https://developer.blender.org/D8492

5 files changed, 0 insertions, 13637 deletions

diff --git a/source/blender/blenkernel/intern/seqcache.c b/source/blender/blenkernel/intern/seqcache.c
deleted file mode 100644
index 7d2858050be..00000000000
--- a/source/blender/blenkernel/intern/seqcache.c
+++ /dev/null
@@ -1,1455 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * Peter Schlaile <peter [at] schlaile [dot] de> 2010
- */
-
-/** \file
- * \ingroup bke
- */
-
-#include <memory.h>
-#include <stddef.h>
-#include <time.h>
-
-#include "MEM_guardedalloc.h"
-
-#include "DNA_scene_types.h"
-#include "DNA_sequence_types.h"
-#include "DNA_space_types.h" /* for FILE_MAX. */
-
-#include "IMB_colormanagement.h"
-#include "IMB_imbuf.h"
-#include "IMB_imbuf_types.h"
-
-#include "BLI_blenlib.h"
-#include "BLI_endian_switch.h"
-#include "BLI_fileops.h"
-#include "BLI_fileops_types.h"
-#include "BLI_ghash.h"
-#include "BLI_listbase.h"
-#include "BLI_mempool.h"
-#include "BLI_path_util.h"
-#include "BLI_threads.h"
-
-#include "BKE_global.h"
-#include "BKE_main.h"
-#include "BKE_scene.h"
-#include "BKE_sequencer.h"
-
-/**
- * Sequencer Cache Design Notes
- * ============================
- *
- * Function:
- * All images created during rendering are added to cache, even if the cache is already full.
- * This is because:
- *  - one image may be needed multiple times during rendering.
- *  - keeping the last rendered frame allows us for faster re-render when user edits strip in stack
- *  - we can decide if we keep frame only when it's completely rendered. Otherwise we risk having
- *    "holes" in the cache, which can be annoying
- * If the cache is full all entries for pending frame will have is_temp_cache set.
- *
- * Linking: We use links to reduce number of iterations over entries needed to manage cache.
- * Entries are linked in order as they are put into cache.
- * Only permanent (is_temp_cache = 0) cache entries are linked.
- * Putting #SEQ_CACHE_STORE_FINAL_OUT will reset linking
- *
- * Only entire frame can be freed to release resources for new entries (recycling).
- * Once again, this is to reduce number of iterations, but also more controllable than removing
- * entries one by one in reverse order to their creation.
- *
- * User can exclude caching of some images. Such entries will have is_temp_cache set.
- *
- *
- * Disk Cache Design Notes
- * =======================
- *
- * Disk cache uses directory specified in user preferences
- * For each cached non-temp image, image data and supplementary info are written to HDD.
- * Multiple(DCACHE_IMAGES_PER_FILE) images share the same file.
- * Each of these files contains header DiskCacheHeader followed by image data.
- * Zlib compression with user definable level can be used to compress image data(per image)
- * Images are written in order in which they are rendered.
- * Overwriting of individual entry is not possible.
- * Stored images are deleted by invalidation, or when size of all files exceeds maximum
- * size specified in user preferences.
- * To distinguish 2 blend files with same name, scene->ed->disk_cache_timestamp
- * is used as UID. Blend file can still be copied manually which may cause conflict.
- *
- */
-
-/* <cache type>-<resolution X>x<resolution Y>-<rendersize>%(<view_id>)-<frame no>.dcf */
-#define DCACHE_FNAME_FORMAT "%d-%dx%d-%d%%(%d)-%d.dcf"
-#define DCACHE_IMAGES_PER_FILE 100
-#define DCACHE_CURRENT_VERSION 1
-#define COLORSPACE_NAME_MAX 64 /* XXX: defined in imb intern */
-
-typedef struct DiskCacheHeaderEntry {
-  unsigned char encoding;
-  uint64_t frameno;
-  uint64_t size_compressed;
-  uint64_t size_raw;
-  uint64_t offset;
-  char colorspace_name[COLORSPACE_NAME_MAX];
-} DiskCacheHeaderEntry;
-
-typedef struct DiskCacheHeader {
-  DiskCacheHeaderEntry entry[DCACHE_IMAGES_PER_FILE];
-} DiskCacheHeader;
-
-typedef struct SeqDiskCache {
-  Main *bmain;
-  int64_t timestamp;
-  ListBase files;
-  ThreadMutex read_write_mutex;
-  size_t size_total;
-} SeqDiskCache;
-
-typedef struct DiskCacheFile {
-  struct DiskCacheFile *next, *prev;
-  char path[FILE_MAX];
-  char dir[FILE_MAXDIR];
-  char file[FILE_MAX];
-  BLI_stat_t fstat;
-  int cache_type;
-  int rectx;
-  int recty;
-  int render_size;
-  int view_id;
-  int start_frame;
-} DiskCacheFile;
-
-typedef struct SeqCache {
-  Main *bmain;
-  struct GHash *hash;
-  ThreadMutex iterator_mutex;
-  struct BLI_mempool *keys_pool;
-  struct BLI_mempool *items_pool;
-  struct SeqCacheKey *last_key;
-  size_t memory_used;
-  SeqDiskCache *disk_cache;
-} SeqCache;
-
-typedef struct SeqCacheItem {
-  struct SeqCache *cache_owner;
-  struct ImBuf *ibuf;
-} SeqCacheItem;
-
-typedef struct SeqCacheKey {
-  struct SeqCache *cache_owner;
-  void *userkey;
-  struct SeqCacheKey *link_prev; /* Used for linking intermediate items to final frame. */
-  struct SeqCacheKey *link_next; /* Used for linking intermediate items to final frame. */
-  struct Sequence *seq;
-  SeqRenderData context;
-  float nfra;
-  float cost;         /* In short: render time(s) divided by playback frame duration(s) */
-  bool is_temp_cache; /* this cache entry will be freed before rendering next frame */
-  /* ID of task for asigning temp cache entries to particular task(thread, etc.) */
-  eSeqTaskId task_id;
-  int type;
-} SeqCacheKey;
-
-static ThreadMutex cache_create_lock = BLI_MUTEX_INITIALIZER;
-static float seq_cache_cfra_to_frame_index(Sequence *seq, float cfra);
-static float seq_cache_frame_index_to_cfra(Sequence *seq, float nfra);
-
-static char *seq_disk_cache_base_dir(void)
-{
-  return U.sequencer_disk_cache_dir;
-}
-
-static int seq_disk_cache_compression_level(void)
-{
-  switch (U.sequencer_disk_cache_compression) {
-    case USER_SEQ_DISK_CACHE_COMPRESSION_NONE:
-      return 0;
-    case USER_SEQ_DISK_CACHE_COMPRESSION_LOW:
-      return 1;
-    case USER_SEQ_DISK_CACHE_COMPRESSION_HIGH:
-      return 9;
-  }
-
-  return U.sequencer_disk_cache_compression;
-}
-
-static size_t seq_disk_cache_size_limit(void)
-{
-  return (size_t)U.sequencer_disk_cache_size_limit * (1024 * 1024 * 1024);
-}
-
-static bool seq_disk_cache_is_enabled(Main *bmain)
-{
-  return (U.sequencer_disk_cache_dir[0] != '\0' && U.sequencer_disk_cache_size_limit != 0 &&
-          (U.sequencer_disk_cache_flag & SEQ_CACHE_DISK_CACHE_ENABLE) != 0 &&
-          bmain->name[0] != '\0');
-}
-
-static DiskCacheFile *seq_disk_cache_add_file_to_list(SeqDiskCache *disk_cache, const char *path)
-{
-
-  DiskCacheFile *cache_file = MEM_callocN(sizeof(DiskCacheFile), "SeqDiskCacheFile");
-  char dir[FILE_MAXDIR], file[FILE_MAX];
-  BLI_split_dirfile(path, dir, file, sizeof(dir), sizeof(file));
-  BLI_strncpy(cache_file->path, path, sizeof(cache_file->path));
-  BLI_strncpy(cache_file->dir, dir, sizeof(cache_file->dir));
-  BLI_strncpy(cache_file->file, file, sizeof(cache_file->file));
-  sscanf(file,
-         DCACHE_FNAME_FORMAT,
-         &cache_file->cache_type,
-         &cache_file->rectx,
-         &cache_file->recty,
-         &cache_file->render_size,
-         &cache_file->view_id,
-         &cache_file->start_frame);
-  cache_file->start_frame *= DCACHE_IMAGES_PER_FILE;
-  BLI_addtail(&disk_cache->files, cache_file);
-  return cache_file;
-}
-
-static void seq_disk_cache_get_files(SeqDiskCache *disk_cache, char *path)
-{
-  struct direntry *filelist, *fl;
-  uint nbr, i;
-  disk_cache->size_total = 0;
-
-  i = nbr = BLI_filelist_dir_contents(path, &filelist);
-  fl = filelist;
-  while (i--) {
-    /* Don't follow links. */
-    const eFileAttributes file_attrs = BLI_file_attributes(fl->path);
-    if (file_attrs & FILE_ATTR_ANY_LINK) {
-      fl++;
-      continue;
-    }
-
-    char file[FILE_MAX];
-    BLI_split_dirfile(fl->path, NULL, file, 0, sizeof(file));
-
-    bool is_dir = BLI_is_dir(fl->path);
-    if (is_dir && !FILENAME_IS_CURRPAR(file)) {
-      char subpath[FILE_MAX];
-      BLI_strncpy(subpath, fl->path, sizeof(subpath));
-      BLI_path_slash_ensure(subpath);
-      seq_disk_cache_get_files(disk_cache, subpath);
-    }
-
-    if (!is_dir) {
-      const char *ext = BLI_path_extension(fl->path);
-      if (ext && ext[1] == 'd' && ext[2] == 'c' && ext[3] == 'f') {
-        DiskCacheFile *cache_file = seq_disk_cache_add_file_to_list(disk_cache, fl->path);
-        cache_file->fstat = fl->s;
-        disk_cache->size_total += cache_file->fstat.st_size;
-      }
-    }
-    fl++;
-  }
-  BLI_filelist_free(filelist, nbr);
-}
-
-static DiskCacheFile *seq_disk_cache_get_oldest_file(SeqDiskCache *disk_cache)
-{
-  DiskCacheFile *oldest_file = disk_cache->files.first;
-  if (oldest_file == NULL) {
-    return NULL;
-  }
-  for (DiskCacheFile *cache_file = oldest_file->next; cache_file; cache_file = cache_file->next) {
-    if (cache_file->fstat.st_mtime < oldest_file->fstat.st_mtime) {
-      oldest_file = cache_file;
-    }
-  }
-
-  return oldest_file;
-}
-
-static void seq_disk_cache_delete_file(SeqDiskCache *disk_cache, DiskCacheFile *file)
-{
-  disk_cache->size_total -= file->fstat.st_size;
-  BLI_delete(file->path, false, false);
-  BLI_remlink(&disk_cache->files, file);
-  MEM_freeN(file);
-}
-
-static bool seq_disk_cache_enforce_limits(SeqDiskCache *disk_cache)
-{
-  BLI_mutex_lock(&disk_cache->read_write_mutex);
-  while (disk_cache->size_total > seq_disk_cache_size_limit()) {
-    DiskCacheFile *oldest_file = seq_disk_cache_get_oldest_file(disk_cache);
-
-    if (!oldest_file) {
-      /* We shouldn't enforce limits with no files, do re-scan. */
-      seq_disk_cache_get_files(disk_cache, seq_disk_cache_base_dir());
-      continue;
-    }
-
-    if (BLI_exists(oldest_file->path) == 0) {
-      /* File may have been manually deleted during runtime, do re-scan. */
-      BLI_freelistN(&disk_cache->files);
-      seq_disk_cache_get_files(disk_cache, seq_disk_cache_base_dir());
-      continue;
-    }
-
-    seq_disk_cache_delete_file(disk_cache, oldest_file);
-  }
-  BLI_mutex_unlock(&disk_cache->read_write_mutex);
-
-  return true;
-}
-
-static DiskCacheFile *seq_disk_cache_get_file_entry_by_path(SeqDiskCache *disk_cache, char *path)
-{
-  DiskCacheFile *cache_file = disk_cache->files.first;
-
-  for (; cache_file; cache_file = cache_file->next) {
-    if (BLI_strcasecmp(cache_file->path, path) == 0) {
-      return cache_file;
-    }
-  }
-
-  return NULL;
-}
-
-/* Update file size and timestamp. */
-static void seq_disk_cache_update_file(SeqDiskCache *disk_cache, char *path)
-{
-  DiskCacheFile *cache_file;
-  int64_t size_before;
-  int64_t size_after;
-
-  cache_file = seq_disk_cache_get_file_entry_by_path(disk_cache, path);
-  size_before = cache_file->fstat.st_size;
-
-  if (BLI_stat(path, &cache_file->fstat) == -1) {
-    BLI_assert(false);
-    memset(&cache_file->fstat, 0, sizeof(BLI_stat_t));
-  }
-
-  size_after = cache_file->fstat.st_size;
-  disk_cache->size_total += size_after - size_before;
-}
-
-/* Path format:
- * <cache dir>/<project name>/<scene name>-<timestamp>/<seq name>/DCACHE_FNAME_FORMAT
- */
-
-static void seq_disk_cache_get_project_dir(SeqDiskCache *disk_cache, char *path, size_t path_len)
-{
-  char main_name[FILE_MAX];
-  BLI_split_file_part(BKE_main_blendfile_path(disk_cache->bmain), main_name, sizeof(main_name));
-  BLI_strncpy(path, seq_disk_cache_base_dir(), path_len);
-  BLI_path_append(path, path_len, main_name);
-}
-
-static void seq_disk_cache_get_dir(
-    SeqDiskCache *disk_cache, Scene *scene, Sequence *seq, char *path, size_t path_len)
-{
-  char scene_name[MAX_ID_NAME + 22]; /* + -%PRId64 */
-  char seq_name[SEQ_NAME_MAXSTR];
-  char project_dir[FILE_MAX];
-
-  seq_disk_cache_get_project_dir(disk_cache, project_dir, sizeof(project_dir));
-  sprintf(scene_name, "%s-%" PRId64, scene->id.name, disk_cache->timestamp);
-  BLI_strncpy(seq_name, seq->name, sizeof(seq_name));
-  BLI_filename_make_safe(scene_name);
-  BLI_filename_make_safe(seq_name);
-  BLI_strncpy(path, project_dir, path_len);
-  BLI_path_append(path, path_len, scene_name);
-  BLI_path_append(path, path_len, seq_name);
-}
-
-static void seq_disk_cache_get_file_path(SeqDiskCache *disk_cache,
-                                         SeqCacheKey *key,
-                                         char *path,
-                                         size_t path_len)
-{
-  seq_disk_cache_get_dir(disk_cache, key->context.scene, key->seq, path, path_len);
-  int frameno = (int)key->nfra / DCACHE_IMAGES_PER_FILE;
-  char cache_filename[FILE_MAXFILE];
-  sprintf(cache_filename,
-          DCACHE_FNAME_FORMAT,
-          key->type,
-          key->context.rectx,
-          key->context.recty,
-          key->context.preview_render_size,
-          key->context.view_id,
-          frameno);
-
-  BLI_path_append(path, path_len, cache_filename);
-}
-
-static void seq_disk_cache_create_version_file(char *path)
-{
-  BLI_make_existing_file(path);
-
-  FILE *file = BLI_fopen(path, "w");
-  if (file) {
-    fprintf(file, "%d", DCACHE_CURRENT_VERSION);
-    fclose(file);
-  }
-}
-
-static void seq_disk_cache_handle_versioning(SeqDiskCache *disk_cache)
-{
-  char path[FILE_MAX];
-  char path_version_file[FILE_MAX];
-  int version = 0;
-
-  seq_disk_cache_get_project_dir(disk_cache, path, sizeof(path));
-  BLI_strncpy(path_version_file, path, sizeof(path_version_file));
-  BLI_path_append(path_version_file, sizeof(path_version_file), "cache_version");
-
-  if (BLI_exists(path)) {
-    FILE *file = BLI_fopen(path_version_file, "r");
-
-    if (file) {
-      fscanf(file, "%d", &version);
-      fclose(file);
-    }
-
-    if (version != DCACHE_CURRENT_VERSION) {
-      BLI_delete(path, false, true);
-      seq_disk_cache_create_version_file(path_version_file);
-    }
-  }
-  else {
-    seq_disk_cache_create_version_file(path_version_file);
-  }
-}
-
-static void seq_disk_cache_delete_invalid_files(SeqDiskCache *disk_cache,
-                                                Scene *scene,
-                                                Sequence *seq,
-                                                int invalidate_types,
-                                                int range_start,
-                                                int range_end)
-{
-  DiskCacheFile *next_file, *cache_file = disk_cache->files.first;
-  char cache_dir[FILE_MAX];
-  seq_disk_cache_get_dir(disk_cache, scene, seq, cache_dir, sizeof(cache_dir));
-  BLI_path_slash_ensure(cache_dir);
-
-  while (cache_file) {
-    next_file = cache_file->next;
-    if (cache_file->cache_type & invalidate_types) {
-      if (STREQ(cache_dir, cache_file->dir)) {
-        int cfra_start = seq_cache_frame_index_to_cfra(seq, cache_file->start_frame);
-        if (cfra_start > range_start && cfra_start <= range_end) {
-          seq_disk_cache_delete_file(disk_cache, cache_file);
-        }
-      }
-    }
-    cache_file = next_file;
-  }
-}
-
-static void seq_disk_cache_invalidate(Scene *scene,
-                                      Sequence *seq,
-                                      Sequence *seq_changed,
-                                      int invalidate_types)
-{
-  int start;
-  int end;
-  SeqDiskCache *disk_cache = scene->ed->cache->disk_cache;
-
-  BLI_mutex_lock(&disk_cache->read_write_mutex);
-
-  start = seq_changed->startdisp - DCACHE_IMAGES_PER_FILE;
-  end = seq_changed->enddisp;
-
-  seq_disk_cache_delete_invalid_files(disk_cache, scene, seq, invalidate_types, start, end);
-
-  BLI_mutex_unlock(&disk_cache->read_write_mutex);
-}
-
-static size_t deflate_imbuf_to_file(ImBuf *ibuf,
-                                    FILE *file,
-                                    int level,
-                                    DiskCacheHeaderEntry *header_entry)
-{
-  if (ibuf->rect) {
-    return BLI_gzip_mem_to_file_at_pos(
-        ibuf->rect, header_entry->size_raw, file, header_entry->offset, level);
-  }
-
-  return BLI_gzip_mem_to_file_at_pos(
-      ibuf->rect_float, header_entry->size_raw, file, header_entry->offset, level);
-}
-
-static size_t inflate_file_to_imbuf(ImBuf *ibuf, FILE *file, DiskCacheHeaderEntry *header_entry)
-{
-  if (ibuf->rect) {
-    return BLI_ungzip_file_to_mem_at_pos(
-        ibuf->rect, header_entry->size_raw, file, header_entry->offset);
-  }
-
-  return BLI_ungzip_file_to_mem_at_pos(
-      ibuf->rect_float, header_entry->size_raw, file, header_entry->offset);
-}
-
-static void seq_disk_cache_read_header(FILE *file, DiskCacheHeader *header)
-{
-  fseek(file, 0, 0);
-  fread(header, sizeof(*header), 1, file);
-
-  for (int i = 0; i < DCACHE_IMAGES_PER_FILE; i++) {
-    if ((ENDIAN_ORDER == B_ENDIAN) && header->entry[i].encoding == 0) {
-      BLI_endian_switch_uint64(&header->entry[i].frameno);
-      BLI_endian_switch_uint64(&header->entry[i].offset);
-      BLI_endian_switch_uint64(&header->entry[i].size_compressed);
-      BLI_endian_switch_uint64(&header->entry[i].size_raw);
-    }
-  }
-}
-
-static size_t seq_disk_cache_write_header(FILE *file, DiskCacheHeader *header)
-{
-  fseek(file, 0, 0);
-  return fwrite(header, sizeof(*header), 1, file);
-}
-
-static int seq_disk_cache_add_header_entry(SeqCacheKey *key, ImBuf *ibuf, DiskCacheHeader *header)
-{
-  int i;
-  uint64_t offset = sizeof(*header);
-
-  /* Lookup free entry, get offset for new data. */
-  for (i = 0; i < DCACHE_IMAGES_PER_FILE; i++) {
-    if (header->entry[i].size_compressed == 0) {
-      break;
-    }
-  }
-
-  /* Attempt to write beyond set entry limit.
-   * Reset file header and start writing from beginning.
-   */
-  if (i == DCACHE_IMAGES_PER_FILE) {
-    i = 0;
-    memset(header, 0, sizeof(*header));
-  }
-
-  /* Calculate offset for image data. */
-  if (i > 0) {
-    offset = header->entry[i - 1].offset + header->entry[i - 1].size_compressed;
-  }
-
-  if (ENDIAN_ORDER == B_ENDIAN) {
-    header->entry[i].encoding = 255;
-  }
-  else {
-    header->entry[i].encoding = 0;
-  }
-
-  header->entry[i].offset = offset;
-  header->entry[i].frameno = key->nfra;
-
-  /* Store colorspace name of ibuf. */
-  const char *colorspace_name;
-  if (ibuf->rect) {
-    header->entry[i].size_raw = ibuf->x * ibuf->y * ibuf->channels;
-    colorspace_name = IMB_colormanagement_get_rect_colorspace(ibuf);
-  }
-  else {
-    header->entry[i].size_raw = ibuf->x * ibuf->y * ibuf->channels * 4;
-    colorspace_name = IMB_colormanagement_get_float_colorspace(ibuf);
-  }
-  BLI_strncpy(
-      header->entry[i].colorspace_name, colorspace_name, sizeof(header->entry[i].colorspace_name));
-
-  return i;
-}
-
-static int seq_disk_cache_get_header_entry(SeqCacheKey *key, DiskCacheHeader *header)
-{
-  for (int i = 0; i < DCACHE_IMAGES_PER_FILE; i++) {
-    if (header->entry[i].frameno == key->nfra) {
-      return i;
-    }
-  }
-
-  return -1;
-}
-
-static bool seq_disk_cache_write_file(SeqDiskCache *disk_cache, SeqCacheKey *key, ImBuf *ibuf)
-{
-  char path[FILE_MAX];
-
-  seq_disk_cache_get_file_path(disk_cache, key, path, sizeof(path));
-  BLI_make_existing_file(path);
-
-  FILE *file = BLI_fopen(path, "rb+");
-  if (!file) {
-    file = BLI_fopen(path, "wb+");
-    if (!file) {
-      return false;
-    }
-    seq_disk_cache_add_file_to_list(disk_cache, path);
-  }
-
-  DiskCacheHeader header;
-  memset(&header, 0, sizeof(header));
-  seq_disk_cache_read_header(file, &header);
-  int entry_index = seq_disk_cache_add_header_entry(key, ibuf, &header);
-  size_t bytes_written = deflate_imbuf_to_file(
-      ibuf, file, seq_disk_cache_compression_level(), &header.entry[entry_index]);
-
-  if (bytes_written != 0) {
-    /* Last step is writing header, as image data can be overwritten,
-     * but missing data would cause problems.
-     */
-    header.entry[entry_index].size_compressed = bytes_written;
-    seq_disk_cache_write_header(file, &header);
-    seq_disk_cache_update_file(disk_cache, path);
-    fclose(file);
-
-    return true;
-  }
-
-  return false;
-}
-
-static ImBuf *seq_disk_cache_read_file(SeqDiskCache *disk_cache, SeqCacheKey *key)
-{
-  char path[FILE_MAX];
-  DiskCacheHeader header;
-
-  seq_disk_cache_get_file_path(disk_cache, key, path, sizeof(path));
-  BLI_make_existing_file(path);
-
-  FILE *file = BLI_fopen(path, "rb");
-  if (!file) {
-    return NULL;
-  }
-
-  seq_disk_cache_read_header(file, &header);
-  int entry_index = seq_disk_cache_get_header_entry(key, &header);
-
-  /* Item not found. */
-  if (entry_index < 0) {
-    fclose(file);
-    return NULL;
-  }
-
-  ImBuf *ibuf;
-  uint64_t size_char = (uint64_t)key->context.rectx * key->context.recty * 4;
-  uint64_t size_float = (uint64_t)key->context.rectx * key->context.recty * 16;
-  size_t expected_size;
-
-  if (header.entry[entry_index].size_raw == size_char) {
-    expected_size = size_char;
-    ibuf = IMB_allocImBuf(key->context.rectx, key->context.recty, 32, IB_rect);
-    IMB_colormanagement_assign_rect_colorspace(ibuf, header.entry[entry_index].colorspace_name);
-  }
-  else if (header.entry[entry_index].size_raw == size_float) {
-    expected_size = size_float;
-    ibuf = IMB_allocImBuf(key->context.rectx, key->context.recty, 32, IB_rectfloat);
-    IMB_colormanagement_assign_float_colorspace(ibuf, header.entry[entry_index].colorspace_name);
-  }
-  else {
-    fclose(file);
-    return NULL;
-  }
-
-  size_t bytes_read = inflate_file_to_imbuf(ibuf, file, &header.entry[entry_index]);
-
-  /* Sanity check. */
-  if (bytes_read != expected_size) {
-    fclose(file);
-    IMB_freeImBuf(ibuf);
-    return NULL;
-  }
-  BLI_file_touch(path);
-  seq_disk_cache_update_file(disk_cache, path);
-  fclose(file);
-
-  return ibuf;
-}
-
-#undef DCACHE_FNAME_FORMAT
-#undef DCACHE_IMAGES_PER_FILE
-#undef COLORSPACE_NAME_MAX
-#undef DCACHE_CURRENT_VERSION
-
-static bool seq_cmp_render_data(const SeqRenderData *a, const SeqRenderData *b)
-{
-  return ((a->preview_render_size != b->preview_render_size) || (a->rectx != b->rectx) ||
-          (a->recty != b->recty) || (a->bmain != b->bmain) || (a->scene != b->scene) ||
-          (a->motion_blur_shutter != b->motion_blur_shutter) ||
-          (a->motion_blur_samples != b->motion_blur_samples) ||
-          (a->scene->r.views_format != b->scene->r.views_format) || (a->view_id != b->view_id));
-}
-
-static unsigned int seq_hash_render_data(const SeqRenderData *a)
-{
-  unsigned int rval = a->rectx + a->recty;
-
-  rval ^= a->preview_render_size;
-  rval ^= ((intptr_t)a->bmain) << 6;
-  rval ^= ((intptr_t)a->scene) << 6;
-  rval ^= (int)(a->motion_blur_shutter * 100.0f) << 10;
-  rval ^= a->motion_blur_samples << 16;
-  rval ^= ((a->scene->r.views_format * 2) + a->view_id) << 24;
-
-  return rval;
-}
-
-static unsigned int seq_cache_hashhash(const void *key_)
-{
-  const SeqCacheKey *key = key_;
-  unsigned int rval = seq_hash_render_data(&key->context);
-
-  rval ^= *(const unsigned int *)&key->nfra;
-  rval += key->type;
-  rval ^= ((intptr_t)key->seq) << 6;
-
-  return rval;
-}
-
-static bool seq_cache_hashcmp(const void *a_, const void *b_)
-{
-  const SeqCacheKey *a = a_;
-  const SeqCacheKey *b = b_;
-
-  return ((a->seq != b->seq) || (a->nfra != b->nfra) || (a->type != b->type) ||
-          seq_cmp_render_data(&a->context, &b->context));
-}
-
-static float seq_cache_cfra_to_frame_index(Sequence *seq, float cfra)
-{
-  return cfra - seq->start;
-}
-
-static float seq_cache_frame_index_to_cfra(Sequence *seq, float nfra)
-{
-  return nfra + seq->start;
-}
-
-static SeqCache *seq_cache_get_from_scene(Scene *scene)
-{
-  if (scene && scene->ed && scene->ed->cache) {
-    return scene->ed->cache;
-  }
-
-  return NULL;
-}
-
-static void seq_cache_lock(Scene *scene)
-{
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-
-  if (cache) {
-    BLI_mutex_lock(&cache->iterator_mutex);
-  }
-}
-
-static void seq_cache_unlock(Scene *scene)
-{
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-
-  if (cache) {
-    BLI_mutex_unlock(&cache->iterator_mutex);
-  }
-}
-
-static size_t seq_cache_get_mem_total(void)
-{
-  return ((size_t)U.memcachelimit) * 1024 * 1024;
-}
-
-static void seq_cache_keyfree(void *val)
-{
-  SeqCacheKey *key = val;
-  BLI_mempool_free(key->cache_owner->keys_pool, key);
-}
-
-static void seq_cache_valfree(void *val)
-{
-  SeqCacheItem *item = (SeqCacheItem *)val;
-  SeqCache *cache = item->cache_owner;
-
-  if (item->ibuf) {
-    cache->memory_used -= IMB_get_size_in_memory(item->ibuf);
-    IMB_freeImBuf(item->ibuf);
-  }
-
-  BLI_mempool_free(item->cache_owner->items_pool, item);
-}
-
-static void seq_cache_put(SeqCache *cache, SeqCacheKey *key, ImBuf *ibuf)
-{
-  SeqCacheItem *item;
-  item = BLI_mempool_alloc(cache->items_pool);
-  item->cache_owner = cache;
-  item->ibuf = ibuf;
-
-  if (BLI_ghash_reinsert(cache->hash, key, item, seq_cache_keyfree, seq_cache_valfree)) {
-    IMB_refImBuf(ibuf);
-    cache->last_key = key;
-    cache->memory_used += IMB_get_size_in_memory(ibuf);
-  }
-}
-
-static ImBuf *seq_cache_get(SeqCache *cache, SeqCacheKey *key)
-{
-  SeqCacheItem *item = BLI_ghash_lookup(cache->hash, key);
-
-  if (item && item->ibuf) {
-    IMB_refImBuf(item->ibuf);
-
-    return item->ibuf;
-  }
-
-  return NULL;
-}
-
-static void seq_cache_relink_keys(SeqCacheKey *link_next, SeqCacheKey *link_prev)
-{
-  if (link_next) {
-    link_next->link_prev = link_prev;
-  }
-  if (link_prev) {
-    link_prev->link_next = link_next;
-  }
-}
-
-/* Choose a key out of 2 candidates(leftmost and rightmost items)
- * to recycle based on currently used strategy */
-static SeqCacheKey *seq_cache_choose_key(Scene *scene, SeqCacheKey *lkey, SeqCacheKey *rkey)
-{
-  SeqCacheKey *finalkey = NULL;
-
-  /* Ideally, cache would not need to check the state of prefetching task
-   * that is tricky to do however, because prefetch would need to know,
-   * if a key, that is about to be created would be removed by itself.
-   *
-   * This can happen because only FINAL_OUT item insertion will trigger recycling
-   * but that is also the point, where prefetch can be suspended.
-   *
-   * We could use temp cache as a shield and later make it a non-temporary entry,
-   * but it is not worth of increasing system complexity.
-   */
-  if (scene->ed->cache_flag & SEQ_CACHE_PREFETCH_ENABLE &&
-      BKE_sequencer_prefetch_job_is_running(scene)) {
-    int pfjob_start, pfjob_end;
-    BKE_sequencer_prefetch_get_time_range(scene, &pfjob_start, &pfjob_end);
-
-    if (lkey) {
-      int lkey_cfra = seq_cache_frame_index_to_cfra(lkey->seq, lkey->nfra);
-      if (lkey_cfra < pfjob_start || lkey_cfra > pfjob_end) {
-        return lkey;
-      }
-    }
-
-    if (rkey) {
-      int rkey_cfra = seq_cache_frame_index_to_cfra(rkey->seq, rkey->nfra);
-      if (rkey_cfra < pfjob_start || rkey_cfra > pfjob_end) {
-        return rkey;
-      }
-    }
-
-    return NULL;
-  }
-
-  if (rkey && lkey) {
-    int lkey_cfra = seq_cache_frame_index_to_cfra(lkey->seq, lkey->nfra);
-    int rkey_cfra = seq_cache_frame_index_to_cfra(rkey->seq, rkey->nfra);
-
-    if (lkey_cfra > rkey_cfra) {
-      SeqCacheKey *swapkey = lkey;
-      lkey = rkey;
-      rkey = swapkey;
-    }
-
-    int l_diff = scene->r.cfra - lkey_cfra;
-    int r_diff = rkey_cfra - scene->r.cfra;
-
-    if (l_diff > r_diff) {
-      finalkey = lkey;
-    }
-    else {
-      finalkey = rkey;
-    }
-  }
-  else {
-    if (lkey) {
-      finalkey = lkey;
-    }
-    else {
-      finalkey = rkey;
-    }
-  }
-  return finalkey;
-}
-
-static void seq_cache_recycle_linked(Scene *scene, SeqCacheKey *base)
-{
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-  if (!cache) {
-    return;
-  }
-
-  SeqCacheKey *next = base->link_next;
-
-  while (base) {
-    SeqCacheKey *prev = base->link_prev;
-    BLI_ghash_remove(cache->hash, base, seq_cache_keyfree, seq_cache_valfree);
-    base = prev;
-  }
-
-  base = next;
-  while (base) {
-    next = base->link_next;
-    BLI_ghash_remove(cache->hash, base, seq_cache_keyfree, seq_cache_valfree);
-    base = next;
-  }
-}
-
-static SeqCacheKey *seq_cache_get_item_for_removal(Scene *scene)
-{
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-  SeqCacheKey *finalkey = NULL;
-  /* Leftmost key. */
-  SeqCacheKey *lkey = NULL;
-  /* Rightmost key. */
-  SeqCacheKey *rkey = NULL;
-  SeqCacheKey *key = NULL;
-
-  GHashIterator gh_iter;
-  BLI_ghashIterator_init(&gh_iter, cache->hash);
-  int total_count = 0;
-  int cheap_count = 0;
-
-  while (!BLI_ghashIterator_done(&gh_iter)) {
-    key = BLI_ghashIterator_getKey(&gh_iter);
-    SeqCacheItem *item = BLI_ghashIterator_getValue(&gh_iter);
-    BLI_ghashIterator_step(&gh_iter);
-
-    /* This shouldn't happen, but better be safe than sorry. */
-    if (!item->ibuf) {
-      seq_cache_recycle_linked(scene, key);
-      /* Can not continue iterating after linked remove. */
-      BLI_ghashIterator_init(&gh_iter, cache->hash);
-      continue;
-    }
-
-    if (key->is_temp_cache || key->link_next != NULL) {
-      continue;
-    }
-
-    total_count++;
-
-    if (key->cost <= scene->ed->recycle_max_cost) {
-      cheap_count++;
-      if (lkey) {
-        if (seq_cache_frame_index_to_cfra(key->seq, key->nfra) <
-            seq_cache_frame_index_to_cfra(lkey->seq, lkey->nfra)) {
-          lkey = key;
-        }
-      }
-      else {
-        lkey = key;
-      }
-      if (rkey) {
-        if (seq_cache_frame_index_to_cfra(key->seq, key->nfra) >
-            seq_cache_frame_index_to_cfra(rkey->seq, rkey->nfra)) {
-          rkey = key;
-        }
-      }
-      else {
-        rkey = key;
-      }
-    }
-  }
-
-  finalkey = seq_cache_choose_key(scene, lkey, rkey);
-
-  return finalkey;
-}
-
-/* Find only "base" keys.
- * Sources(other types) for a frame must be freed all at once.
- */
-bool BKE_sequencer_cache_recycle_item(Scene *scene)
-{
-  size_t memory_total = seq_cache_get_mem_total();
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-  if (!cache) {
-    return false;
-  }
-
-  seq_cache_lock(scene);
-
-  while (cache->memory_used > memory_total) {
-    SeqCacheKey *finalkey = seq_cache_get_item_for_removal(scene);
-
-    if (finalkey) {
-      seq_cache_recycle_linked(scene, finalkey);
-    }
-    else {
-      seq_cache_unlock(scene);
-      return false;
-    }
-  }
-  seq_cache_unlock(scene);
-  return true;
-}
-
-static void seq_cache_set_temp_cache_linked(Scene *scene, SeqCacheKey *base)
-{
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-
-  if (!cache || !base) {
-    return;
-  }
-
-  SeqCacheKey *next = base->link_next;
-
-  while (base) {
-    SeqCacheKey *prev = base->link_prev;
-    base->is_temp_cache = true;
-    base = prev;
-  }
-
-  base = next;
-  while (base) {
-    next = base->link_next;
-    base->is_temp_cache = true;
-    base = next;
-  }
-}
-
-static void seq_disk_cache_create(Main *bmain, Scene *scene)
-{
-  BLI_mutex_lock(&cache_create_lock);
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-
-  if (cache == NULL) {
-    return;
-  }
-
-  if (cache->disk_cache != NULL) {
-    return;
-  }
-
-  cache->disk_cache = MEM_callocN(sizeof(SeqDiskCache), "SeqDiskCache");
-  cache->disk_cache->bmain = bmain;
-  BLI_mutex_init(&cache->disk_cache->read_write_mutex);
-  seq_disk_cache_handle_versioning(cache->disk_cache);
-  seq_disk_cache_get_files(cache->disk_cache, seq_disk_cache_base_dir());
-  cache->disk_cache->timestamp = scene->ed->disk_cache_timestamp;
-  BLI_mutex_unlock(&cache_create_lock);
-}
-
-static void seq_cache_create(Main *bmain, Scene *scene)
-{
-  BLI_mutex_lock(&cache_create_lock);
-  if (scene->ed->cache == NULL) {
-    SeqCache *cache = MEM_callocN(sizeof(SeqCache), "SeqCache");
-    cache->keys_pool = BLI_mempool_create(sizeof(SeqCacheKey), 0, 64, BLI_MEMPOOL_NOP);
-    cache->items_pool = BLI_mempool_create(sizeof(SeqCacheItem), 0, 64, BLI_MEMPOOL_NOP);
-    cache->hash = BLI_ghash_new(seq_cache_hashhash, seq_cache_hashcmp, "SeqCache hash");
-    cache->last_key = NULL;
-    cache->bmain = bmain;
-    BLI_mutex_init(&cache->iterator_mutex);
-    scene->ed->cache = cache;
-
-    if (scene->ed->disk_cache_timestamp == 0) {
-      scene->ed->disk_cache_timestamp = time(NULL);
-    }
-  }
-  BLI_mutex_unlock(&cache_create_lock);
-}
-
-/* ***************************** API ****************************** */
-
-void BKE_sequencer_cache_free_temp_cache(Scene *scene, short id, int cfra)
-{
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-  if (!cache) {
-    return;
-  }
-
-  seq_cache_lock(scene);
-
-  GHashIterator gh_iter;
-  BLI_ghashIterator_init(&gh_iter, cache->hash);
-  while (!BLI_ghashIterator_done(&gh_iter)) {
-    SeqCacheKey *key = BLI_ghashIterator_getKey(&gh_iter);
-    BLI_ghashIterator_step(&gh_iter);
-
-    if (key->is_temp_cache && key->task_id == id &&
-        seq_cache_frame_index_to_cfra(key->seq, key->nfra) != cfra) {
-      BLI_ghash_remove(cache->hash, key, seq_cache_keyfree, seq_cache_valfree);
-    }
-  }
-  seq_cache_unlock(scene);
-}
-
-void BKE_sequencer_cache_destruct(Scene *scene)
-{
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-  if (!cache) {
-    return;
-  }
-
-  BLI_ghash_free(cache->hash, seq_cache_keyfree, seq_cache_valfree);
-  BLI_mempool_destroy(cache->keys_pool);
-  BLI_mempool_destroy(cache->items_pool);
-  BLI_mutex_end(&cache->iterator_mutex);
-
-  if (cache->disk_cache != NULL) {
-    BLI_freelistN(&cache->disk_cache->files);
-    BLI_mutex_end(&cache->disk_cache->read_write_mutex);
-    MEM_freeN(cache->disk_cache);
-  }
-
-  MEM_freeN(cache);
-  scene->ed->cache = NULL;
-}
-
-void BKE_sequencer_cache_cleanup_all(Main *bmain)
-{
-  for (Scene *scene = bmain->scenes.first; scene != NULL; scene = scene->id.next) {
-    BKE_sequencer_cache_cleanup(scene);
-  }
-}
-void BKE_sequencer_cache_cleanup(Scene *scene)
-{
-  BKE_sequencer_prefetch_stop(scene);
-
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-  if (!cache) {
-    return;
-  }
-
-  seq_cache_lock(scene);
-
-  GHashIterator gh_iter;
-  BLI_ghashIterator_init(&gh_iter, cache->hash);
-  while (!BLI_ghashIterator_done(&gh_iter)) {
-    SeqCacheKey *key = BLI_ghashIterator_getKey(&gh_iter);
-
-    BLI_ghashIterator_step(&gh_iter);
-    BLI_ghash_remove(cache->hash, key, seq_cache_keyfree, seq_cache_valfree);
-  }
-  cache->last_key = NULL;
-  seq_cache_unlock(scene);
-}
-
-void BKE_sequencer_cache_cleanup_sequence(Scene *scene,
-                                          Sequence *seq,
-                                          Sequence *seq_changed,
-                                          int invalidate_types,
-                                          bool force_seq_changed_range)
-{
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-  if (!cache) {
-    return;
-  }
-
-  if (seq_disk_cache_is_enabled(cache->bmain) && cache->disk_cache != NULL) {
-    seq_disk_cache_invalidate(scene, seq, seq_changed, invalidate_types);
-  }
-
-  seq_cache_lock(scene);
-
-  int range_start = seq_changed->startdisp;
-  int range_end = seq_changed->enddisp;
-
-  if (!force_seq_changed_range) {
-    if (seq->startdisp > range_start) {
-      range_start = seq->startdisp;
-    }
-
-    if (seq->enddisp < range_end) {
-      range_end = seq->enddisp;
-    }
-  }
-
-  int invalidate_composite = invalidate_types & SEQ_CACHE_STORE_FINAL_OUT;
-  int invalidate_source = invalidate_types & (SEQ_CACHE_STORE_RAW | SEQ_CACHE_STORE_PREPROCESSED |
-                                              SEQ_CACHE_STORE_COMPOSITE);
-
-  GHashIterator gh_iter;
-  BLI_ghashIterator_init(&gh_iter, cache->hash);
-  while (!BLI_ghashIterator_done(&gh_iter)) {
-    SeqCacheKey *key = BLI_ghashIterator_getKey(&gh_iter);
-    BLI_ghashIterator_step(&gh_iter);
-
-    int key_cfra = seq_cache_frame_index_to_cfra(key->seq, key->nfra);
-
-    /* Clean all final and composite in intersection of seq and seq_changed. */
-    if (key->type & invalidate_composite && key_cfra >= range_start && key_cfra <= range_end) {
-      if (key->link_next || key->link_prev) {
-        seq_cache_relink_keys(key->link_next, key->link_prev);
-      }
-
-      BLI_ghash_remove(cache->hash, key, seq_cache_keyfree, seq_cache_valfree);
-    }
-
-    if (key->type & invalidate_source && key->seq == seq && key_cfra >= seq_changed->startdisp &&
-        key_cfra <= seq_changed->enddisp) {
-      if (key->link_next || key->link_prev) {
-        seq_cache_relink_keys(key->link_next, key->link_prev);
-      }
-
-      BLI_ghash_remove(cache->hash, key, seq_cache_keyfree, seq_cache_valfree);
-    }
-  }
-  cache->last_key = NULL;
-  seq_cache_unlock(scene);
-}
-
-struct ImBuf *BKE_sequencer_cache_get(
-    const SeqRenderData *context, Sequence *seq, float cfra, int type, bool skip_disk_cache)
-{
-
-  if (context->skip_cache || context->is_proxy_render || !seq) {
-    return NULL;
-  }
-
-  Scene *scene = context->scene;
-
-  if (context->is_prefetch_render) {
-    context = BKE_sequencer_prefetch_get_original_context(context);
-    scene = context->scene;
-    seq = BKE_sequencer_prefetch_get_original_sequence(seq, scene);
-  }
-
-  if (!seq) {
-    return NULL;
-  }
-
-  if (!scene->ed->cache) {
-    seq_cache_create(context->bmain, scene);
-  }
-
-  seq_cache_lock(scene);
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-  ImBuf *ibuf = NULL;
-  SeqCacheKey key;
-
-  /* Try RAM cache: */
-  if (cache && seq) {
-    key.seq = seq;
-    key.context = *context;
-    key.nfra = seq_cache_cfra_to_frame_index(seq, cfra);
-    key.type = type;
-
-    ibuf = seq_cache_get(cache, &key);
-  }
-  seq_cache_unlock(scene);
-
-  if (ibuf) {
-    return ibuf;
-  }
-
-  /* Try disk cache: */
-  if (!skip_disk_cache && seq_disk_cache_is_enabled(context->bmain)) {
-    if (cache->disk_cache == NULL) {
-      seq_disk_cache_create(context->bmain, context->scene);
-    }
-
-    BLI_mutex_lock(&cache->disk_cache->read_write_mutex);
-    ibuf = seq_disk_cache_read_file(cache->disk_cache, &key);
-    BLI_mutex_unlock(&cache->disk_cache->read_write_mutex);
-    if (ibuf) {
-      if (key.type == SEQ_CACHE_STORE_FINAL_OUT) {
-        BKE_sequencer_cache_put_if_possible(context, seq, cfra, type, ibuf, 0.0f, true);
-      }
-      else {
-        BKE_sequencer_cache_put(context, seq, cfra, type, ibuf, 0.0f, true);
-      }
-    }
-  }
-
-  return ibuf;
-}
-
-bool BKE_sequencer_cache_put_if_possible(const SeqRenderData *context,
-                                         Sequence *seq,
-                                         float cfra,
-                                         int type,
-                                         ImBuf *ibuf,
-                                         float cost,
-                                         bool skip_disk_cache)
-{
-  Scene *scene = context->scene;
-
-  if (context->is_prefetch_render) {
-    context = BKE_sequencer_prefetch_get_original_context(context);
-    scene = context->scene;
-    seq = BKE_sequencer_prefetch_get_original_sequence(seq, scene);
-  }
-
-  if (!seq) {
-    return false;
-  }
-
-  if (BKE_sequencer_cache_recycle_item(scene)) {
-    BKE_sequencer_cache_put(context, seq, cfra, type, ibuf, cost, skip_disk_cache);
-    return true;
-  }
-
-  seq_cache_set_temp_cache_linked(scene, scene->ed->cache->last_key);
-  scene->ed->cache->last_key = NULL;
-  return false;
-}
-
-void BKE_sequencer_cache_put(const SeqRenderData *context,
-                             Sequence *seq,
-                             float cfra,
-                             int type,
-                             ImBuf *i,
-                             float cost,
-                             bool skip_disk_cache)
-{
-  if (i == NULL || context->skip_cache || context->is_proxy_render || !seq) {
-    return;
-  }
-
-  Scene *scene = context->scene;
-
-  if (context->is_prefetch_render) {
-    context = BKE_sequencer_prefetch_get_original_context(context);
-    scene = context->scene;
-    seq = BKE_sequencer_prefetch_get_original_sequence(seq, scene);
-    BLI_assert(seq != NULL);
-  }
-
-  /* Prevent reinserting, it breaks cache key linking. */
-  ImBuf *test = BKE_sequencer_cache_get(context, seq, cfra, type, true);
-  if (test) {
-    IMB_freeImBuf(test);
-    return;
-  }
-
-  if (!scene->ed->cache) {
-    seq_cache_create(context->bmain, scene);
-  }
-
-  seq_cache_lock(scene);
-
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-  int flag;
-
-  if (seq->cache_flag & SEQ_CACHE_OVERRIDE) {
-    flag = seq->cache_flag;
-    /* Final_out is invalid in context of sequence override. */
-    flag -= seq->cache_flag & SEQ_CACHE_STORE_FINAL_OUT;
-    /* If global setting is enabled however, use it. */
-    flag |= scene->ed->cache_flag & SEQ_CACHE_STORE_FINAL_OUT;
-  }
-  else {
-    flag = scene->ed->cache_flag;
-  }
-
-  if (cost > SEQ_CACHE_COST_MAX) {
-    cost = SEQ_CACHE_COST_MAX;
-  }
-
-  SeqCacheKey *key;
-  key = BLI_mempool_alloc(cache->keys_pool);
-  key->cache_owner = cache;
-  key->seq = seq;
-  key->context = *context;
-  key->nfra = seq_cache_cfra_to_frame_index(seq, cfra);
-  key->type = type;
-  key->cost = cost;
-  key->link_prev = NULL;
-  key->link_next = NULL;
-  key->is_temp_cache = true;
-  key->task_id = context->task_id;
-
-  /* Item stored for later use */
-  if (flag & type) {
-    key->is_temp_cache = false;
-    key->link_prev = cache->last_key;
-  }
-
-  SeqCacheKey *temp_last_key = cache->last_key;
-  seq_cache_put(cache, key, i);
-
-  /* Restore pointer to previous item as this one will be freed when stack is rendered. */
-  if (key->is_temp_cache) {
-    cache->last_key = temp_last_key;
-  }
-
-  /* Set last_key's reference to this key so we can look up chain backwards.
-   * Item is already put in cache, so cache->last_key points to current key.
-   */
-  if (flag & type && temp_last_key) {
-    temp_last_key->link_next = cache->last_key;
-  }
-
-  /* Reset linking. */
-  if (key->type == SEQ_CACHE_STORE_FINAL_OUT) {
-    cache->last_key = NULL;
-  }
-
-  seq_cache_unlock(scene);
-
-  if (!key->is_temp_cache && !skip_disk_cache) {
-    if (seq_disk_cache_is_enabled(context->bmain)) {
-      if (cache->disk_cache == NULL) {
-        seq_disk_cache_create(context->bmain, context->scene);
-      }
-
-      BLI_mutex_lock(&cache->disk_cache->read_write_mutex);
-      seq_disk_cache_write_file(cache->disk_cache, key, i);
-      BLI_mutex_unlock(&cache->disk_cache->read_write_mutex);
-      seq_disk_cache_enforce_limits(cache->disk_cache);
-    }
-  }
-}
-
-void BKE_sequencer_cache_iterate(
-    struct Scene *scene,
-    void *userdata,
-    bool callback_init(void *userdata, size_t item_count),
-    bool callback_iter(void *userdata, struct Sequence *seq, int nfra, int cache_type, float cost))
-{
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-  if (!cache) {
-    return;
-  }
-
-  seq_cache_lock(scene);
-  bool interrupt = callback_init(userdata, BLI_ghash_len(cache->hash));
-
-  GHashIterator gh_iter;
-  BLI_ghashIterator_init(&gh_iter, cache->hash);
-
-  while (!BLI_ghashIterator_done(&gh_iter) && !interrupt) {
-    SeqCacheKey *key = BLI_ghashIterator_getKey(&gh_iter);
-    BLI_ghashIterator_step(&gh_iter);
-
-    interrupt = callback_iter(userdata, key->seq, key->nfra, key->type, key->cost);
-  }
-
-  cache->last_key = NULL;
-  seq_cache_unlock(scene);
-}
-
-bool BKE_sequencer_cache_is_full(Scene *scene)
-{
-  size_t memory_total = seq_cache_get_mem_total();
-  SeqCache *cache = seq_cache_get_from_scene(scene);
-  if (!cache) {
-    return false;
-  }
-
-  return memory_total < cache->memory_used;
-}
diff --git a/source/blender/blenkernel/intern/seqeffects.c b/source/blender/blenkernel/intern/seqeffects.c
deleted file mode 100644
index b4bc2d25155..00000000000
--- a/source/blender/blenkernel/intern/seqeffects.c
+++ /dev/null
@@ -1,4291 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- *
- * - Blender Foundation, 2003-2009
- * - Peter Schlaile <peter [at] schlaile [dot] de> 2005/2006
- */
-
-/** \file
- * \ingroup bke
- */
-
-#include <math.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "MEM_guardedalloc.h"
-
-#include "BLI_listbase.h"
-#include "BLI_math.h" /* windows needs for M_PI */
-#include "BLI_path_util.h"
-#include "BLI_rect.h"
-#include "BLI_string.h"
-#include "BLI_threads.h"
-#include "BLI_utildefines.h"
-
-#include "DNA_anim_types.h"
-#include "DNA_scene_types.h"
-#include "DNA_sequence_types.h"
-#include "DNA_space_types.h"
-
-#include "BKE_fcurve.h"
-#include "BKE_lib_id.h"
-#include "BKE_main.h"
-#include "BKE_sequencer.h"
-
-#include "IMB_colormanagement.h"
-#include "IMB_imbuf.h"
-#include "IMB_imbuf_types.h"
-#include "IMB_metadata.h"
-
-#include "BLI_math_color_blend.h"
-
-#include "RNA_access.h"
-
-#include "RE_pipeline.h"
-
-#include "BLF_api.h"
-
-static struct SeqEffectHandle get_sequence_effect_impl(int seq_type);
-
-static void slice_get_byte_buffers(const SeqRenderData *context,
-                                   const ImBuf *ibuf1,
-                                   const ImBuf *ibuf2,
-                                   const ImBuf *ibuf3,
-                                   const ImBuf *out,
-                                   int start_line,
-                                   unsigned char **rect1,
-                                   unsigned char **rect2,
-                                   unsigned char **rect3,
-                                   unsigned char **rect_out)
-{
-  int offset = 4 * start_line * context->rectx;
-
-  *rect1 = (unsigned char *)ibuf1->rect + offset;
-  *rect_out = (unsigned char *)out->rect + offset;
-
-  if (ibuf2) {
-    *rect2 = (unsigned char *)ibuf2->rect + offset;
-  }
-
-  if (ibuf3) {
-    *rect3 = (unsigned char *)ibuf3->rect + offset;
-  }
-}
-
-static void slice_get_float_buffers(const SeqRenderData *context,
-                                    const ImBuf *ibuf1,
-                                    const ImBuf *ibuf2,
-                                    const ImBuf *ibuf3,
-                                    const ImBuf *out,
-                                    int start_line,
-                                    float **rect1,
-                                    float **rect2,
-                                    float **rect3,
-                                    float **rect_out)
-{
-  int offset = 4 * start_line * context->rectx;
-
-  *rect1 = ibuf1->rect_float + offset;
-  *rect_out = out->rect_float + offset;
-
-  if (ibuf2) {
-    *rect2 = ibuf2->rect_float + offset;
-  }
-
-  if (ibuf3) {
-    *rect3 = ibuf3->rect_float + offset;
-  }
-}
-
-/*********************** Glow effect *************************/
-
-enum {
-  GlowR = 0,
-  GlowG = 1,
-  GlowB = 2,
-  GlowA = 3,
-};
-
-static ImBuf *prepare_effect_imbufs(const SeqRenderData *context,
-                                    ImBuf *ibuf1,
-                                    ImBuf *ibuf2,
-                                    ImBuf *ibuf3)
-{
-  ImBuf *out;
-  Scene *scene = context->scene;
-  int x = context->rectx;
-  int y = context->recty;
-
-  if (!ibuf1 && !ibuf2 && !ibuf3) {
-    /* hmmm, global float option ? */
-    out = IMB_allocImBuf(x, y, 32, IB_rect);
-  }
-  else if ((ibuf1 && ibuf1->rect_float) || (ibuf2 && ibuf2->rect_float) ||
-           (ibuf3 && ibuf3->rect_float)) {
-    /* if any inputs are rectfloat, output is float too */
-
-    out = IMB_allocImBuf(x, y, 32, IB_rectfloat);
-  }
-  else {
-    out = IMB_allocImBuf(x, y, 32, IB_rect);
-  }
-
-  if (out->rect_float) {
-    if (ibuf1 && !ibuf1->rect_float) {
-      BKE_sequencer_imbuf_to_sequencer_space(scene, ibuf1, true);
-    }
-
-    if (ibuf2 && !ibuf2->rect_float) {
-      BKE_sequencer_imbuf_to_sequencer_space(scene, ibuf2, true);
-    }
-
-    if (ibuf3 && !ibuf3->rect_float) {
-      BKE_sequencer_imbuf_to_sequencer_space(scene, ibuf3, true);
-    }
-
-    IMB_colormanagement_assign_float_colorspace(out, scene->sequencer_colorspace_settings.name);
-  }
-  else {
-    if (ibuf1 && !ibuf1->rect) {
-      IMB_rect_from_float(ibuf1);
-    }
-
-    if (ibuf2 && !ibuf2->rect) {
-      IMB_rect_from_float(ibuf2);
-    }
-
-    if (ibuf3 && !ibuf3->rect) {
-      IMB_rect_from_float(ibuf3);
-    }
-  }
-
-  /* If effect only affecting a single channel, forward input's metadata to the output. */
-  if (ibuf1 != NULL && ibuf1 == ibuf2 && ibuf2 == ibuf3) {
-    IMB_metadata_copy(out, ibuf1);
-  }
-
-  return out;
-}
-
-/*********************** Alpha Over *************************/
-
-static void init_alpha_over_or_under(Sequence *seq)
-{
-  Sequence *seq1 = seq->seq1;
-  Sequence *seq2 = seq->seq2;
-
-  seq->seq2 = seq1;
-  seq->seq1 = seq2;
-}
-
-static void do_alphaover_effect_byte(float facf0,
-                                     float facf1,
-                                     int x,
-                                     int y,
-                                     unsigned char *rect1,
-                                     unsigned char *rect2,
-                                     unsigned char *out)
-{
-  float fac2, mfac, fac, fac4;
-  int xo;
-  unsigned char *cp1, *cp2, *rt;
-  float tempc[4], rt1[4], rt2[4];
-
-  xo = x;
-  cp1 = rect1;
-  cp2 = rect2;
-  rt = out;
-
-  fac2 = facf0;
-  fac4 = facf1;
-
-  while (y--) {
-    x = xo;
-    while (x--) {
-      /* rt = rt1 over rt2  (alpha from rt1) */
-
-      straight_uchar_to_premul_float(rt1, cp1);
-      straight_uchar_to_premul_float(rt2, cp2);
-
-      fac = fac2;
-      mfac = 1.0f - fac2 * rt1[3];
-
-      if (fac <= 0.0f) {
-        *((unsigned int *)rt) = *((unsigned int *)cp2);
-      }
-      else if (mfac <= 0.0f) {
-        *((unsigned int *)rt) = *((unsigned int *)cp1);
-      }
-      else {
-        tempc[0] = fac * rt1[0] + mfac * rt2[0];
-        tempc[1] = fac * rt1[1] + mfac * rt2[1];
-        tempc[2] = fac * rt1[2] + mfac * rt2[2];
-        tempc[3] = fac * rt1[3] + mfac * rt2[3];
-
-        premul_float_to_straight_uchar(rt, tempc);
-      }
-      cp1 += 4;
-      cp2 += 4;
-      rt += 4;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo;
-    while (x--) {
-      straight_uchar_to_premul_float(rt1, cp1);
-      straight_uchar_to_premul_float(rt2, cp2);
-
-      fac = fac4;
-      mfac = 1.0f - (fac4 * rt1[3]);
-
-      if (fac <= 0.0f) {
-        *((unsigned int *)rt) = *((unsigned int *)cp2);
-      }
-      else if (mfac <= 0.0f) {
-        *((unsigned int *)rt) = *((unsigned int *)cp1);
-      }
-      else {
-        tempc[0] = fac * rt1[0] + mfac * rt2[0];
-        tempc[1] = fac * rt1[1] + mfac * rt2[1];
-        tempc[2] = fac * rt1[2] + mfac * rt2[2];
-        tempc[3] = fac * rt1[3] + mfac * rt2[3];
-
-        premul_float_to_straight_uchar(rt, tempc);
-      }
-      cp1 += 4;
-      cp2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_alphaover_effect_float(
-    float facf0, float facf1, int x, int y, float *rect1, float *rect2, float *out)
-{
-  float fac2, mfac, fac, fac4;
-  int xo;
-  float *rt1, *rt2, *rt;
-
-  xo = x;
-  rt1 = rect1;
-  rt2 = rect2;
-  rt = out;
-
-  fac2 = facf0;
-  fac4 = facf1;
-
-  while (y--) {
-    x = xo;
-    while (x--) {
-      /* rt = rt1 over rt2  (alpha from rt1) */
-
-      fac = fac2;
-      mfac = 1.0f - (fac2 * rt1[3]);
-
-      if (fac <= 0.0f) {
-        memcpy(rt, rt2, sizeof(float[4]));
-      }
-      else if (mfac <= 0) {
-        memcpy(rt, rt1, sizeof(float[4]));
-      }
-      else {
-        rt[0] = fac * rt1[0] + mfac * rt2[0];
-        rt[1] = fac * rt1[1] + mfac * rt2[1];
-        rt[2] = fac * rt1[2] + mfac * rt2[2];
-        rt[3] = fac * rt1[3] + mfac * rt2[3];
-      }
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo;
-    while (x--) {
-      fac = fac4;
-      mfac = 1.0f - (fac4 * rt1[3]);
-
-      if (fac <= 0.0f) {
-        memcpy(rt, rt2, sizeof(float[4]));
-      }
-      else if (mfac <= 0.0f) {
-        memcpy(rt, rt1, sizeof(float[4]));
-      }
-      else {
-        rt[0] = fac * rt1[0] + mfac * rt2[0];
-        rt[1] = fac * rt1[1] + mfac * rt2[1];
-        rt[2] = fac * rt1[2] + mfac * rt2[2];
-        rt[3] = fac * rt1[3] + mfac * rt2[3];
-      }
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_alphaover_effect(const SeqRenderData *context,
-                                Sequence *UNUSED(seq),
-                                float UNUSED(cfra),
-                                float facf0,
-                                float facf1,
-                                ImBuf *ibuf1,
-                                ImBuf *ibuf2,
-                                ImBuf *UNUSED(ibuf3),
-                                int start_line,
-                                int total_lines,
-                                ImBuf *out)
-{
-  if (out->rect_float) {
-    float *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_float_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_alphaover_effect_float(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-  else {
-    unsigned char *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_byte_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_alphaover_effect_byte(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-}
-
-/*********************** Alpha Under *************************/
-
-static void do_alphaunder_effect_byte(float facf0,
-                                      float facf1,
-                                      int x,
-                                      int y,
-                                      unsigned char *rect1,
-                                      unsigned char *rect2,
-                                      unsigned char *out)
-{
-  float fac2, fac, fac4;
-  int xo;
-  unsigned char *cp1, *cp2, *rt;
-  float tempc[4], rt1[4], rt2[4];
-
-  xo = x;
-  cp1 = rect1;
-  cp2 = rect2;
-  rt = out;
-
-  fac2 = facf0;
-  fac4 = facf1;
-
-  while (y--) {
-    x = xo;
-    while (x--) {
-      /* rt = rt1 under rt2  (alpha from rt2) */
-      straight_uchar_to_premul_float(rt1, cp1);
-      straight_uchar_to_premul_float(rt2, cp2);
-
-      /* this complex optimization is because the
-       * 'skybuf' can be crossed in
-       */
-      if (rt2[3] <= 0.0f && fac2 >= 1.0f) {
-        *((unsigned int *)rt) = *((unsigned int *)cp1);
-      }
-      else if (rt2[3] >= 1.0f) {
-        *((unsigned int *)rt) = *((unsigned int *)cp2);
-      }
-      else {
-        fac = (fac2 * (1.0f - rt2[3]));
-
-        if (fac <= 0) {
-          *((unsigned int *)rt) = *((unsigned int *)cp2);
-        }
-        else {
-          tempc[0] = (fac * rt1[0] + rt2[0]);
-          tempc[1] = (fac * rt1[1] + rt2[1]);
-          tempc[2] = (fac * rt1[2] + rt2[2]);
-          tempc[3] = (fac * rt1[3] + rt2[3]);
-
-          premul_float_to_straight_uchar(rt, tempc);
-        }
-      }
-      cp1 += 4;
-      cp2 += 4;
-      rt += 4;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo;
-    while (x--) {
-      straight_uchar_to_premul_float(rt1, cp1);
-      straight_uchar_to_premul_float(rt2, cp2);
-
-      if (rt2[3] <= 0.0f && fac4 >= 1.0f) {
-        *((unsigned int *)rt) = *((unsigned int *)cp1);
-      }
-      else if (rt2[3] >= 1.0f) {
-        *((unsigned int *)rt) = *((unsigned int *)cp2);
-      }
-      else {
-        fac = (fac4 * (1.0f - rt2[3]));
-
-        if (fac <= 0) {
-          *((unsigned int *)rt) = *((unsigned int *)cp2);
-        }
-        else {
-          tempc[0] = (fac * rt1[0] + rt2[0]);
-          tempc[1] = (fac * rt1[1] + rt2[1]);
-          tempc[2] = (fac * rt1[2] + rt2[2]);
-          tempc[3] = (fac * rt1[3] + rt2[3]);
-
-          premul_float_to_straight_uchar(rt, tempc);
-        }
-      }
-      cp1 += 4;
-      cp2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_alphaunder_effect_float(
-    float facf0, float facf1, int x, int y, float *rect1, float *rect2, float *out)
-{
-  float fac2, fac, fac4;
-  int xo;
-  float *rt1, *rt2, *rt;
-
-  xo = x;
-  rt1 = rect1;
-  rt2 = rect2;
-  rt = out;
-
-  fac2 = facf0;
-  fac4 = facf1;
-
-  while (y--) {
-    x = xo;
-    while (x--) {
-      /* rt = rt1 under rt2  (alpha from rt2) */
-
-      /* this complex optimization is because the
-       * 'skybuf' can be crossed in
-       */
-      if (rt2[3] <= 0 && fac2 >= 1.0f) {
-        memcpy(rt, rt1, sizeof(float[4]));
-      }
-      else if (rt2[3] >= 1.0f) {
-        memcpy(rt, rt2, sizeof(float[4]));
-      }
-      else {
-        fac = fac2 * (1.0f - rt2[3]);
-
-        if (fac == 0) {
-          memcpy(rt, rt2, sizeof(float[4]));
-        }
-        else {
-          rt[0] = fac * rt1[0] + rt2[0];
-          rt[1] = fac * rt1[1] + rt2[1];
-          rt[2] = fac * rt1[2] + rt2[2];
-          rt[3] = fac * rt1[3] + rt2[3];
-        }
-      }
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo;
-    while (x--) {
-      if (rt2[3] <= 0 && fac4 >= 1.0f) {
-        memcpy(rt, rt1, sizeof(float[4]));
-      }
-      else if (rt2[3] >= 1.0f) {
-        memcpy(rt, rt2, sizeof(float[4]));
-      }
-      else {
-        fac = fac4 * (1.0f - rt2[3]);
-
-        if (fac == 0) {
-          memcpy(rt, rt2, sizeof(float[4]));
-        }
-        else {
-          rt[0] = fac * rt1[0] + rt2[0];
-          rt[1] = fac * rt1[1] + rt2[1];
-          rt[2] = fac * rt1[2] + rt2[2];
-          rt[3] = fac * rt1[3] + rt2[3];
-        }
-      }
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_alphaunder_effect(const SeqRenderData *context,
-                                 Sequence *UNUSED(seq),
-                                 float UNUSED(cfra),
-                                 float facf0,
-                                 float facf1,
-                                 ImBuf *ibuf1,
-                                 ImBuf *ibuf2,
-                                 ImBuf *UNUSED(ibuf3),
-                                 int start_line,
-                                 int total_lines,
-                                 ImBuf *out)
-{
-  if (out->rect_float) {
-    float *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_float_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_alphaunder_effect_float(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-  else {
-    unsigned char *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_byte_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_alphaunder_effect_byte(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-}
-
-/*********************** Cross *************************/
-
-static void do_cross_effect_byte(float facf0,
-                                 float facf1,
-                                 int x,
-                                 int y,
-                                 unsigned char *rect1,
-                                 unsigned char *rect2,
-                                 unsigned char *out)
-{
-  int fac1, fac2, fac3, fac4;
-  int xo;
-  unsigned char *rt1, *rt2, *rt;
-
-  xo = x;
-  rt1 = rect1;
-  rt2 = rect2;
-  rt = out;
-
-  fac2 = (int)(256.0f * facf0);
-  fac1 = 256 - fac2;
-  fac4 = (int)(256.0f * facf1);
-  fac3 = 256 - fac4;
-
-  while (y--) {
-    x = xo;
-    while (x--) {
-      rt[0] = (fac1 * rt1[0] + fac2 * rt2[0]) >> 8;
-      rt[1] = (fac1 * rt1[1] + fac2 * rt2[1]) >> 8;
-      rt[2] = (fac1 * rt1[2] + fac2 * rt2[2]) >> 8;
-      rt[3] = (fac1 * rt1[3] + fac2 * rt2[3]) >> 8;
-
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo;
-    while (x--) {
-      rt[0] = (fac3 * rt1[0] + fac4 * rt2[0]) >> 8;
-      rt[1] = (fac3 * rt1[1] + fac4 * rt2[1]) >> 8;
-      rt[2] = (fac3 * rt1[2] + fac4 * rt2[2]) >> 8;
-      rt[3] = (fac3 * rt1[3] + fac4 * rt2[3]) >> 8;
-
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_cross_effect_float(
-    float facf0, float facf1, int x, int y, float *rect1, float *rect2, float *out)
-{
-  float fac1, fac2, fac3, fac4;
-  int xo;
-  float *rt1, *rt2, *rt;
-
-  xo = x;
-  rt1 = rect1;
-  rt2 = rect2;
-  rt = out;
-
-  fac2 = facf0;
-  fac1 = 1.0f - fac2;
-  fac4 = facf1;
-  fac3 = 1.0f - fac4;
-
-  while (y--) {
-    x = xo;
-    while (x--) {
-      rt[0] = fac1 * rt1[0] + fac2 * rt2[0];
-      rt[1] = fac1 * rt1[1] + fac2 * rt2[1];
-      rt[2] = fac1 * rt1[2] + fac2 * rt2[2];
-      rt[3] = fac1 * rt1[3] + fac2 * rt2[3];
-
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo;
-    while (x--) {
-      rt[0] = fac3 * rt1[0] + fac4 * rt2[0];
-      rt[1] = fac3 * rt1[1] + fac4 * rt2[1];
-      rt[2] = fac3 * rt1[2] + fac4 * rt2[2];
-      rt[3] = fac3 * rt1[3] + fac4 * rt2[3];
-
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_cross_effect(const SeqRenderData *context,
-                            Sequence *UNUSED(seq),
-                            float UNUSED(cfra),
-                            float facf0,
-                            float facf1,
-                            ImBuf *ibuf1,
-                            ImBuf *ibuf2,
-                            ImBuf *UNUSED(ibuf3),
-                            int start_line,
-                            int total_lines,
-                            ImBuf *out)
-{
-  if (out->rect_float) {
-    float *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_float_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_cross_effect_float(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-  else {
-    unsigned char *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_byte_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_cross_effect_byte(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-}
-
-/*********************** Gamma Cross *************************/
-
-/* copied code from initrender.c */
-static unsigned short gamtab[65536];
-static unsigned short igamtab1[256];
-static bool gamma_tabs_init = false;
-
-#define RE_GAMMA_TABLE_SIZE 400
-
-static float gamma_range_table[RE_GAMMA_TABLE_SIZE + 1];
-static float gamfactor_table[RE_GAMMA_TABLE_SIZE];
-static float inv_gamma_range_table[RE_GAMMA_TABLE_SIZE + 1];
-static float inv_gamfactor_table[RE_GAMMA_TABLE_SIZE];
-static float color_domain_table[RE_GAMMA_TABLE_SIZE + 1];
-static float color_step;
-static float inv_color_step;
-static float valid_gamma;
-static float valid_inv_gamma;
-
-static void makeGammaTables(float gamma)
-{
-  /* we need two tables: one forward, one backward */
-  int i;
-
-  valid_gamma = gamma;
-  valid_inv_gamma = 1.0f / gamma;
-  color_step = 1.0f / RE_GAMMA_TABLE_SIZE;
-  inv_color_step = (float)RE_GAMMA_TABLE_SIZE;
-
-  /* We could squeeze out the two range tables to gain some memory */
-  for (i = 0; i < RE_GAMMA_TABLE_SIZE; i++) {
-    color_domain_table[i] = i * color_step;
-    gamma_range_table[i] = pow(color_domain_table[i], valid_gamma);
-    inv_gamma_range_table[i] = pow(color_domain_table[i], valid_inv_gamma);
-  }
-
-  /* The end of the table should match 1.0 carefully. In order to avoid
-   * rounding errors, we just set this explicitly. The last segment may
-   * have a different length than the other segments, but our
-   * interpolation is insensitive to that
-   */
-  color_domain_table[RE_GAMMA_TABLE_SIZE] = 1.0;
-  gamma_range_table[RE_GAMMA_TABLE_SIZE] = 1.0;
-  inv_gamma_range_table[RE_GAMMA_TABLE_SIZE] = 1.0;
-
-  /* To speed up calculations, we make these calc factor tables. They are
-   * multiplication factors used in scaling the interpolation
-   */
-  for (i = 0; i < RE_GAMMA_TABLE_SIZE; i++) {
-    gamfactor_table[i] = inv_color_step * (gamma_range_table[i + 1] - gamma_range_table[i]);
-    inv_gamfactor_table[i] = inv_color_step *
-                             (inv_gamma_range_table[i + 1] - inv_gamma_range_table[i]);
-  }
-}
-
-static float gammaCorrect(float c)
-{
-  int i;
-  float res;
-
-  i = floorf(c * inv_color_step);
-  /* Clip to range [0, 1]: outside, just do the complete calculation.
-   * We may have some performance problems here. Stretching up the LUT
-   * may help solve that, by exchanging LUT size for the interpolation.
-   * Negative colors are explicitly handled.
-   */
-  if (UNLIKELY(i < 0)) {
-    res = -powf(-c, valid_gamma);
-  }
-  else if (i >= RE_GAMMA_TABLE_SIZE) {
-    res = powf(c, valid_gamma);
-  }
-  else {
-    res = gamma_range_table[i] + ((c - color_domain_table[i]) * gamfactor_table[i]);
-  }
-
-  return res;
-}
-
-/* ------------------------------------------------------------------------- */
-
-static float invGammaCorrect(float c)
-{
-  int i;
-  float res = 0.0;
-
-  i = floorf(c * inv_color_step);
-  /* Negative colors are explicitly handled */
-  if (UNLIKELY(i < 0)) {
-    res = -powf(-c, valid_inv_gamma);
-  }
-  else if (i >= RE_GAMMA_TABLE_SIZE) {
-    res = powf(c, valid_inv_gamma);
-  }
-  else {
-    res = inv_gamma_range_table[i] + ((c - color_domain_table[i]) * inv_gamfactor_table[i]);
-  }
-
-  return res;
-}
-
-static void gamtabs(float gamma)
-{
-  float val, igamma = 1.0f / gamma;
-  int a;
-
-  /* gamtab: in short, out short */
-  for (a = 0; a < 65536; a++) {
-    val = a;
-    val /= 65535.0f;
-
-    if (gamma == 2.0f) {
-      val = sqrtf(val);
-    }
-    else if (gamma != 1.0f) {
-      val = powf(val, igamma);
-    }
-
-    gamtab[a] = (65535.99f * val);
-  }
-  /* inverse gamtab1 : in byte, out short */
-  for (a = 1; a <= 256; a++) {
-    if (gamma == 2.0f) {
-      igamtab1[a - 1] = a * a - 1;
-    }
-    else if (gamma == 1.0f) {
-      igamtab1[a - 1] = 256 * a - 1;
-    }
-    else {
-      val = a / 256.0f;
-      igamtab1[a - 1] = (65535.0 * pow(val, gamma)) - 1;
-    }
-  }
-}
-
-static void build_gammatabs(void)
-{
-  if (gamma_tabs_init == false) {
-    gamtabs(2.0f);
-    makeGammaTables(2.0f);
-    gamma_tabs_init = true;
-  }
-}
-
-static void init_gammacross(Sequence *UNUSED(seq))
-{
-}
-
-static void load_gammacross(Sequence *UNUSED(seq))
-{
-}
-
-static void free_gammacross(Sequence *UNUSED(seq), const bool UNUSED(do_id_user))
-{
-}
-
-static void do_gammacross_effect_byte(float facf0,
-                                      float UNUSED(facf1),
-                                      int x,
-                                      int y,
-                                      unsigned char *rect1,
-                                      unsigned char *rect2,
-                                      unsigned char *out)
-{
-  float fac1, fac2;
-  int xo;
-  unsigned char *cp1, *cp2, *rt;
-  float rt1[4], rt2[4], tempc[4];
-
-  xo = x;
-  cp1 = rect1;
-  cp2 = rect2;
-  rt = out;
-
-  fac2 = facf0;
-  fac1 = 1.0f - fac2;
-
-  while (y--) {
-    x = xo;
-    while (x--) {
-      straight_uchar_to_premul_float(rt1, cp1);
-      straight_uchar_to_premul_float(rt2, cp2);
-
-      tempc[0] = gammaCorrect(fac1 * invGammaCorrect(rt1[0]) + fac2 * invGammaCorrect(rt2[0]));
-      tempc[1] = gammaCorrect(fac1 * invGammaCorrect(rt1[1]) + fac2 * invGammaCorrect(rt2[1]));
-      tempc[2] = gammaCorrect(fac1 * invGammaCorrect(rt1[2]) + fac2 * invGammaCorrect(rt2[2]));
-      tempc[3] = gammaCorrect(fac1 * invGammaCorrect(rt1[3]) + fac2 * invGammaCorrect(rt2[3]));
-
-      premul_float_to_straight_uchar(rt, tempc);
-      cp1 += 4;
-      cp2 += 4;
-      rt += 4;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo;
-    while (x--) {
-      straight_uchar_to_premul_float(rt1, cp1);
-      straight_uchar_to_premul_float(rt2, cp2);
-
-      tempc[0] = gammaCorrect(fac1 * invGammaCorrect(rt1[0]) + fac2 * invGammaCorrect(rt2[0]));
-      tempc[1] = gammaCorrect(fac1 * invGammaCorrect(rt1[1]) + fac2 * invGammaCorrect(rt2[1]));
-      tempc[2] = gammaCorrect(fac1 * invGammaCorrect(rt1[2]) + fac2 * invGammaCorrect(rt2[2]));
-      tempc[3] = gammaCorrect(fac1 * invGammaCorrect(rt1[3]) + fac2 * invGammaCorrect(rt2[3]));
-
-      premul_float_to_straight_uchar(rt, tempc);
-      cp1 += 4;
-      cp2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_gammacross_effect_float(
-    float facf0, float UNUSED(facf1), int x, int y, float *rect1, float *rect2, float *out)
-{
-  float fac1, fac2;
-  int xo;
-  float *rt1, *rt2, *rt;
-
-  xo = x;
-  rt1 = rect1;
-  rt2 = rect2;
-  rt = out;
-
-  fac2 = facf0;
-  fac1 = 1.0f - fac2;
-
-  while (y--) {
-    x = xo * 4;
-    while (x--) {
-      *rt = gammaCorrect(fac1 * invGammaCorrect(*rt1) + fac2 * invGammaCorrect(*rt2));
-      rt1++;
-      rt2++;
-      rt++;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo * 4;
-    while (x--) {
-      *rt = gammaCorrect(fac1 * invGammaCorrect(*rt1) + fac2 * invGammaCorrect(*rt2));
-
-      rt1++;
-      rt2++;
-      rt++;
-    }
-  }
-}
-
-static struct ImBuf *gammacross_init_execution(const SeqRenderData *context,
-                                               ImBuf *ibuf1,
-                                               ImBuf *ibuf2,
-                                               ImBuf *ibuf3)
-{
-  ImBuf *out = prepare_effect_imbufs(context, ibuf1, ibuf2, ibuf3);
-  build_gammatabs();
-
-  return out;
-}
-
-static void do_gammacross_effect(const SeqRenderData *context,
-                                 Sequence *UNUSED(seq),
-                                 float UNUSED(cfra),
-                                 float facf0,
-                                 float facf1,
-                                 ImBuf *ibuf1,
-                                 ImBuf *ibuf2,
-                                 ImBuf *UNUSED(ibuf3),
-                                 int start_line,
-                                 int total_lines,
-                                 ImBuf *out)
-{
-  if (out->rect_float) {
-    float *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_float_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_gammacross_effect_float(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-  else {
-    unsigned char *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_byte_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_gammacross_effect_byte(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-}
-
-/*********************** Add *************************/
-
-static void do_add_effect_byte(float facf0,
-                               float facf1,
-                               int x,
-                               int y,
-                               unsigned char *rect1,
-                               unsigned char *rect2,
-                               unsigned char *out)
-{
-  int xo, fac1, fac3;
-  unsigned char *cp1, *cp2, *rt;
-
-  xo = x;
-  cp1 = rect1;
-  cp2 = rect2;
-  rt = out;
-
-  fac1 = (int)(256.0f * facf0);
-  fac3 = (int)(256.0f * facf1);
-
-  while (y--) {
-    x = xo;
-
-    while (x--) {
-      const int m = fac1 * (int)cp2[3];
-      rt[0] = min_ii(cp1[0] + ((m * cp2[0]) >> 16), 255);
-      rt[1] = min_ii(cp1[1] + ((m * cp2[1]) >> 16), 255);
-      rt[2] = min_ii(cp1[2] + ((m * cp2[2]) >> 16), 255);
-      rt[3] = cp1[3];
-
-      cp1 += 4;
-      cp2 += 4;
-      rt += 4;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo;
-    while (x--) {
-      const int m = fac3 * (int)cp2[3];
-      rt[0] = min_ii(cp1[0] + ((m * cp2[0]) >> 16), 255);
-      rt[1] = min_ii(cp1[1] + ((m * cp2[1]) >> 16), 255);
-      rt[2] = min_ii(cp1[2] + ((m * cp2[2]) >> 16), 255);
-      rt[3] = cp1[3];
-
-      cp1 += 4;
-      cp2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_add_effect_float(
-    float facf0, float facf1, int x, int y, float *rect1, float *rect2, float *out)
-{
-  int xo;
-  float fac1, fac3;
-  float *rt1, *rt2, *rt;
-
-  xo = x;
-  rt1 = rect1;
-  rt2 = rect2;
-  rt = out;
-
-  fac1 = facf0;
-  fac3 = facf1;
-
-  while (y--) {
-    x = xo;
-    while (x--) {
-      const float m = (1.0f - (rt1[3] * (1.0f - fac1))) * rt2[3];
-      rt[0] = rt1[0] + m * rt2[0];
-      rt[1] = rt1[1] + m * rt2[1];
-      rt[2] = rt1[2] + m * rt2[2];
-      rt[3] = rt1[3];
-
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo;
-    while (x--) {
-      const float m = (1.0f - (rt1[3] * (1.0f - fac3))) * rt2[3];
-      rt[0] = rt1[0] + m * rt2[0];
-      rt[1] = rt1[1] + m * rt2[1];
-      rt[2] = rt1[2] + m * rt2[2];
-      rt[3] = rt1[3];
-
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_add_effect(const SeqRenderData *context,
-                          Sequence *UNUSED(seq),
-                          float UNUSED(cfra),
-                          float facf0,
-                          float facf1,
-                          ImBuf *ibuf1,
-                          ImBuf *ibuf2,
-                          ImBuf *UNUSED(ibuf3),
-                          int start_line,
-                          int total_lines,
-                          ImBuf *out)
-{
-  if (out->rect_float) {
-    float *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_float_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_add_effect_float(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-  else {
-    unsigned char *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_byte_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_add_effect_byte(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-}
-
-/*********************** Sub *************************/
-
-static void do_sub_effect_byte(float facf0,
-                               float facf1,
-                               int x,
-                               int y,
-                               unsigned char *rect1,
-                               unsigned char *rect2,
-                               unsigned char *out)
-{
-  int xo, fac1, fac3;
-  unsigned char *cp1, *cp2, *rt;
-
-  xo = x;
-  cp1 = rect1;
-  cp2 = rect2;
-  rt = out;
-
-  fac1 = (int)(256.0f * facf0);
-  fac3 = (int)(256.0f * facf1);
-
-  while (y--) {
-    x = xo;
-    while (x--) {
-      const int m = fac1 * (int)cp2[3];
-      rt[0] = max_ii(cp1[0] - ((m * cp2[0]) >> 16), 0);
-      rt[1] = max_ii(cp1[1] - ((m * cp2[1]) >> 16), 0);
-      rt[2] = max_ii(cp1[2] - ((m * cp2[2]) >> 16), 0);
-      rt[3] = cp1[3];
-
-      cp1 += 4;
-      cp2 += 4;
-      rt += 4;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo;
-    while (x--) {
-      const int m = fac3 * (int)cp2[3];
-      rt[0] = max_ii(cp1[0] - ((m * cp2[0]) >> 16), 0);
-      rt[1] = max_ii(cp1[1] - ((m * cp2[1]) >> 16), 0);
-      rt[2] = max_ii(cp1[2] - ((m * cp2[2]) >> 16), 0);
-      rt[3] = cp1[3];
-
-      cp1 += 4;
-      cp2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_sub_effect_float(
-    float UNUSED(facf0), float facf1, int x, int y, float *rect1, float *rect2, float *out)
-{
-  int xo;
-  float /* fac1, */ fac3_inv;
-  float *rt1, *rt2, *rt;
-
-  xo = x;
-  rt1 = rect1;
-  rt2 = rect2;
-  rt = out;
-
-  /* UNUSED */
-  // fac1 = facf0;
-  fac3_inv = 1.0f - facf1;
-
-  while (y--) {
-    x = xo;
-    while (x--) {
-      const float m = (1.0f - (rt1[3] * fac3_inv)) * rt2[3];
-      rt[0] = max_ff(rt1[0] - m * rt2[0], 0.0f);
-      rt[1] = max_ff(rt1[1] - m * rt2[1], 0.0f);
-      rt[2] = max_ff(rt1[2] - m * rt2[2], 0.0f);
-      rt[3] = rt1[3];
-
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo;
-    while (x--) {
-      const float m = (1.0f - (rt1[3] * fac3_inv)) * rt2[3];
-      rt[0] = max_ff(rt1[0] - m * rt2[0], 0.0f);
-      rt[1] = max_ff(rt1[1] - m * rt2[1], 0.0f);
-      rt[2] = max_ff(rt1[2] - m * rt2[2], 0.0f);
-      rt[3] = rt1[3];
-
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_sub_effect(const SeqRenderData *context,
-                          Sequence *UNUSED(seq),
-                          float UNUSED(cfra),
-                          float facf0,
-                          float facf1,
-                          ImBuf *ibuf1,
-                          ImBuf *ibuf2,
-                          ImBuf *UNUSED(ibuf3),
-                          int start_line,
-                          int total_lines,
-                          ImBuf *out)
-{
-  if (out->rect_float) {
-    float *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_float_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_sub_effect_float(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-  else {
-    unsigned char *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_byte_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_sub_effect_byte(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-}
-
-/*********************** Drop *************************/
-
-/* Must be > 0 or add precopy, etc to the function */
-#define XOFF 8
-#define YOFF 8
-
-static void do_drop_effect_byte(float facf0,
-                                float facf1,
-                                int x,
-                                int y,
-                                unsigned char *rect2i,
-                                unsigned char *rect1i,
-                                unsigned char *outi)
-{
-  int temp, fac, fac1, fac2;
-  unsigned char *rt1, *rt2, *out;
-  int field = 1;
-
-  const int width = x;
-  const int height = y;
-  const int xoff = min_ii(XOFF, width);
-  const int yoff = min_ii(YOFF, height);
-
-  fac1 = (int)(70.0f * facf0);
-  fac2 = (int)(70.0f * facf1);
-
-  rt2 = rect2i + yoff * 4 * width;
-  rt1 = rect1i;
-  out = outi;
-  for (y = 0; y < height - yoff; y++) {
-    if (field) {
-      fac = fac1;
-    }
-    else {
-      fac = fac2;
-    }
-    field = !field;
-
-    memcpy(out, rt1, sizeof(*out) * xoff * 4);
-    rt1 += xoff * 4;
-    out += xoff * 4;
-
-    for (x = xoff; x < width; x++) {
-      temp = ((fac * rt2[3]) >> 8);
-
-      *(out++) = MAX2(0, *rt1 - temp);
-      rt1++;
-      *(out++) = MAX2(0, *rt1 - temp);
-      rt1++;
-      *(out++) = MAX2(0, *rt1 - temp);
-      rt1++;
-      *(out++) = MAX2(0, *rt1 - temp);
-      rt1++;
-      rt2 += 4;
-    }
-    rt2 += xoff * 4;
-  }
-  memcpy(out, rt1, sizeof(*out) * yoff * 4 * width);
-}
-
-static void do_drop_effect_float(
-    float facf0, float facf1, int x, int y, float *rect2i, float *rect1i, float *outi)
-{
-  float temp, fac, fac1, fac2;
-  float *rt1, *rt2, *out;
-  int field = 1;
-
-  const int width = x;
-  const int height = y;
-  const int xoff = min_ii(XOFF, width);
-  const int yoff = min_ii(YOFF, height);
-
-  fac1 = 70.0f * facf0;
-  fac2 = 70.0f * facf1;
-
-  rt2 = rect2i + yoff * 4 * width;
-  rt1 = rect1i;
-  out = outi;
-  for (y = 0; y < height - yoff; y++) {
-    if (field) {
-      fac = fac1;
-    }
-    else {
-      fac = fac2;
-    }
-    field = !field;
-
-    memcpy(out, rt1, sizeof(*out) * xoff * 4);
-    rt1 += xoff * 4;
-    out += xoff * 4;
-
-    for (x = xoff; x < width; x++) {
-      temp = fac * rt2[3];
-
-      *(out++) = MAX2(0.0f, *rt1 - temp);
-      rt1++;
-      *(out++) = MAX2(0.0f, *rt1 - temp);
-      rt1++;
-      *(out++) = MAX2(0.0f, *rt1 - temp);
-      rt1++;
-      *(out++) = MAX2(0.0f, *rt1 - temp);
-      rt1++;
-      rt2 += 4;
-    }
-    rt2 += xoff * 4;
-  }
-  memcpy(out, rt1, sizeof(*out) * yoff * 4 * width);
-}
-
-/*********************** Mul *************************/
-
-static void do_mul_effect_byte(float facf0,
-                               float facf1,
-                               int x,
-                               int y,
-                               unsigned char *rect1,
-                               unsigned char *rect2,
-                               unsigned char *out)
-{
-  int xo, fac1, fac3;
-  unsigned char *rt1, *rt2, *rt;
-
-  xo = x;
-  rt1 = rect1;
-  rt2 = rect2;
-  rt = out;
-
-  fac1 = (int)(256.0f * facf0);
-  fac3 = (int)(256.0f * facf1);
-
-  /* formula:
-   * fac * (a * b) + (1 - fac) * a  => fac * a * (b - 1) + axaux = c * px + py * s; //+centx
-   * yaux = -s * px + c * py; //+centy
-   */
-
-  while (y--) {
-
-    x = xo;
-    while (x--) {
-
-      rt[0] = rt1[0] + ((fac1 * rt1[0] * (rt2[0] - 255)) >> 16);
-      rt[1] = rt1[1] + ((fac1 * rt1[1] * (rt2[1] - 255)) >> 16);
-      rt[2] = rt1[2] + ((fac1 * rt1[2] * (rt2[2] - 255)) >> 16);
-      rt[3] = rt1[3] + ((fac1 * rt1[3] * (rt2[3] - 255)) >> 16);
-
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo;
-    while (x--) {
-
-      rt[0] = rt1[0] + ((fac3 * rt1[0] * (rt2[0] - 255)) >> 16);
-      rt[1] = rt1[1] + ((fac3 * rt1[1] * (rt2[1] - 255)) >> 16);
-      rt[2] = rt1[2] + ((fac3 * rt1[2] * (rt2[2] - 255)) >> 16);
-      rt[3] = rt1[3] + ((fac3 * rt1[3] * (rt2[3] - 255)) >> 16);
-
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_mul_effect_float(
-    float facf0, float facf1, int x, int y, float *rect1, float *rect2, float *out)
-{
-  int xo;
-  float fac1, fac3;
-  float *rt1, *rt2, *rt;
-
-  xo = x;
-  rt1 = rect1;
-  rt2 = rect2;
-  rt = out;
-
-  fac1 = facf0;
-  fac3 = facf1;
-
-  /* formula:
-   * fac * (a * b) + (1 - fac) * a  =>  fac * a * (b - 1) + a
-   */
-
-  while (y--) {
-    x = xo;
-    while (x--) {
-      rt[0] = rt1[0] + fac1 * rt1[0] * (rt2[0] - 1.0f);
-      rt[1] = rt1[1] + fac1 * rt1[1] * (rt2[1] - 1.0f);
-      rt[2] = rt1[2] + fac1 * rt1[2] * (rt2[2] - 1.0f);
-      rt[3] = rt1[3] + fac1 * rt1[3] * (rt2[3] - 1.0f);
-
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-
-    if (y == 0) {
-      break;
-    }
-    y--;
-
-    x = xo;
-    while (x--) {
-      rt[0] = rt1[0] + fac3 * rt1[0] * (rt2[0] - 1.0f);
-      rt[1] = rt1[1] + fac3 * rt1[1] * (rt2[1] - 1.0f);
-      rt[2] = rt1[2] + fac3 * rt1[2] * (rt2[2] - 1.0f);
-      rt[3] = rt1[3] + fac3 * rt1[3] * (rt2[3] - 1.0f);
-
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_mul_effect(const SeqRenderData *context,
-                          Sequence *UNUSED(seq),
-                          float UNUSED(cfra),
-                          float facf0,
-                          float facf1,
-                          ImBuf *ibuf1,
-                          ImBuf *ibuf2,
-                          ImBuf *UNUSED(ibuf3),
-                          int start_line,
-                          int total_lines,
-                          ImBuf *out)
-{
-  if (out->rect_float) {
-    float *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_float_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_mul_effect_float(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-  else {
-    unsigned char *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_byte_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_mul_effect_byte(facf0, facf1, context->rectx, total_lines, rect1, rect2, rect_out);
-  }
-}
-
-/*********************** Blend Mode ***************************************/
-typedef void (*IMB_blend_func_byte)(unsigned char *dst,
-                                    const unsigned char *src1,
-                                    const unsigned char *src2);
-typedef void (*IMB_blend_func_float)(float *dst, const float *src1, const float *src2);
-
-BLI_INLINE void apply_blend_function_byte(float facf0,
-                                          float facf1,
-                                          int x,
-                                          int y,
-                                          unsigned char *rect1,
-                                          unsigned char *rect2,
-                                          unsigned char *out,
-                                          IMB_blend_func_byte blend_function)
-{
-  int xo;
-  unsigned char *rt1, *rt2, *rt;
-  unsigned int achannel;
-  xo = x;
-  rt1 = rect1;
-  rt2 = rect2;
-  rt = out;
-  while (y--) {
-    for (x = xo; x > 0; x--) {
-      achannel = rt1[3];
-      rt1[3] = (unsigned int)achannel * facf0;
-      blend_function(rt, rt1, rt2);
-      rt1[3] = achannel;
-      rt[3] = rt1[3];
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-    if (y == 0) {
-      break;
-    }
-    y--;
-    for (x = xo; x > 0; x--) {
-      achannel = rt1[3];
-      rt1[3] = (unsigned int)achannel * facf1;
-      blend_function(rt, rt1, rt2);
-      rt1[3] = achannel;
-      rt[3] = rt1[3];
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-BLI_INLINE void apply_blend_function_float(float facf0,
-                                           float facf1,
-                                           int x,
-                                           int y,
-                                           float *rect1,
-                                           float *rect2,
-                                           float *out,
-                                           IMB_blend_func_float blend_function)
-{
-  int xo;
-  float *rt1, *rt2, *rt;
-  float achannel;
-  xo = x;
-  rt1 = rect1;
-  rt2 = rect2;
-  rt = out;
-  while (y--) {
-    for (x = xo; x > 0; x--) {
-      achannel = rt1[3];
-      rt1[3] = achannel * facf0;
-      blend_function(rt, rt1, rt2);
-      rt1[3] = achannel;
-      rt[3] = rt1[3];
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-    if (y == 0) {
-      break;
-    }
-    y--;
-    for (x = xo; x > 0; x--) {
-      achannel = rt1[3];
-      rt1[3] = achannel * facf1;
-      blend_function(rt, rt1, rt2);
-      rt1[3] = achannel;
-      rt[3] = rt1[3];
-      rt1 += 4;
-      rt2 += 4;
-      rt += 4;
-    }
-  }
-}
-
-static void do_blend_effect_float(
-    float facf0, float facf1, int x, int y, float *rect1, float *rect2, int btype, float *out)
-{
-  switch (btype) {
-    case SEQ_TYPE_ADD:
-      apply_blend_function_float(facf0, facf1, x, y, rect1, rect2, out, blend_color_add_float);
-      break;
-    case SEQ_TYPE_SUB:
-      apply_blend_function_float(facf0, facf1, x, y, rect1, rect2, out, blend_color_sub_float);
-      break;
-    case SEQ_TYPE_MUL:
-      apply_blend_function_float(facf0, facf1, x, y, rect1, rect2, out, blend_color_mul_float);
-      break;
-    case SEQ_TYPE_DARKEN:
-      apply_blend_function_float(facf0, facf1, x, y, rect1, rect2, out, blend_color_darken_float);
-      break;
-    case SEQ_TYPE_COLOR_BURN:
-      apply_blend_function_float(facf0, facf1, x, y, rect1, rect2, out, blend_color_burn_float);
-      break;
-    case SEQ_TYPE_LINEAR_BURN:
-      apply_blend_function_float(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_linearburn_float);
-      break;
-    case SEQ_TYPE_SCREEN:
-      apply_blend_function_float(facf0, facf1, x, y, rect1, rect2, out, blend_color_screen_float);
-      break;
-    case SEQ_TYPE_LIGHTEN:
-      apply_blend_function_float(facf0, facf1, x, y, rect1, rect2, out, blend_color_lighten_float);
-      break;
-    case SEQ_TYPE_DODGE:
-      apply_blend_function_float(facf0, facf1, x, y, rect1, rect2, out, blend_color_dodge_float);
-      break;
-    case SEQ_TYPE_OVERLAY:
-      apply_blend_function_float(facf0, facf1, x, y, rect1, rect2, out, blend_color_overlay_float);
-      break;
-    case SEQ_TYPE_SOFT_LIGHT:
-      apply_blend_function_float(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_softlight_float);
-      break;
-    case SEQ_TYPE_HARD_LIGHT:
-      apply_blend_function_float(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_hardlight_float);
-      break;
-    case SEQ_TYPE_PIN_LIGHT:
-      apply_blend_function_float(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_pinlight_float);
-      break;
-    case SEQ_TYPE_LIN_LIGHT:
-      apply_blend_function_float(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_linearlight_float);
-      break;
-    case SEQ_TYPE_VIVID_LIGHT:
-      apply_blend_function_float(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_vividlight_float);
-      break;
-    case SEQ_TYPE_BLEND_COLOR:
-      apply_blend_function_float(facf0, facf1, x, y, rect1, rect2, out, blend_color_color_float);
-      break;
-    case SEQ_TYPE_HUE:
-      apply_blend_function_float(facf0, facf1, x, y, rect1, rect2, out, blend_color_hue_float);
-      break;
-    case SEQ_TYPE_SATURATION:
-      apply_blend_function_float(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_saturation_float);
-      break;
-    case SEQ_TYPE_VALUE:
-      apply_blend_function_float(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_luminosity_float);
-      break;
-    case SEQ_TYPE_DIFFERENCE:
-      apply_blend_function_float(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_difference_float);
-      break;
-    case SEQ_TYPE_EXCLUSION:
-      apply_blend_function_float(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_exclusion_float);
-      break;
-    default:
-      break;
-  }
-}
-
-static void do_blend_effect_byte(float facf0,
-                                 float facf1,
-                                 int x,
-                                 int y,
-                                 unsigned char *rect1,
-                                 unsigned char *rect2,
-                                 int btype,
-                                 unsigned char *out)
-{
-  switch (btype) {
-    case SEQ_TYPE_ADD:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_add_byte);
-      break;
-    case SEQ_TYPE_SUB:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_sub_byte);
-      break;
-    case SEQ_TYPE_MUL:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_mul_byte);
-      break;
-    case SEQ_TYPE_DARKEN:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_darken_byte);
-      break;
-    case SEQ_TYPE_COLOR_BURN:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_burn_byte);
-      break;
-    case SEQ_TYPE_LINEAR_BURN:
-      apply_blend_function_byte(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_linearburn_byte);
-      break;
-    case SEQ_TYPE_SCREEN:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_screen_byte);
-      break;
-    case SEQ_TYPE_LIGHTEN:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_lighten_byte);
-      break;
-    case SEQ_TYPE_DODGE:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_dodge_byte);
-      break;
-    case SEQ_TYPE_OVERLAY:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_overlay_byte);
-      break;
-    case SEQ_TYPE_SOFT_LIGHT:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_softlight_byte);
-      break;
-    case SEQ_TYPE_HARD_LIGHT:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_hardlight_byte);
-      break;
-    case SEQ_TYPE_PIN_LIGHT:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_pinlight_byte);
-      break;
-    case SEQ_TYPE_LIN_LIGHT:
-      apply_blend_function_byte(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_linearlight_byte);
-      break;
-    case SEQ_TYPE_VIVID_LIGHT:
-      apply_blend_function_byte(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_vividlight_byte);
-      break;
-    case SEQ_TYPE_BLEND_COLOR:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_color_byte);
-      break;
-    case SEQ_TYPE_HUE:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_hue_byte);
-      break;
-    case SEQ_TYPE_SATURATION:
-      apply_blend_function_byte(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_saturation_byte);
-      break;
-    case SEQ_TYPE_VALUE:
-      apply_blend_function_byte(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_luminosity_byte);
-      break;
-    case SEQ_TYPE_DIFFERENCE:
-      apply_blend_function_byte(
-          facf0, facf1, x, y, rect1, rect2, out, blend_color_difference_byte);
-      break;
-    case SEQ_TYPE_EXCLUSION:
-      apply_blend_function_byte(facf0, facf1, x, y, rect1, rect2, out, blend_color_exclusion_byte);
-      break;
-    default:
-      break;
-  }
-}
-
-static void do_blend_mode_effect(const SeqRenderData *context,
-                                 Sequence *seq,
-                                 float UNUSED(cfra),
-                                 float facf0,
-                                 float facf1,
-                                 ImBuf *ibuf1,
-                                 ImBuf *ibuf2,
-                                 ImBuf *UNUSED(ibuf3),
-                                 int start_line,
-                                 int total_lines,
-                                 ImBuf *out)
-{
-  if (out->rect_float) {
-    float *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-    slice_get_float_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-    do_blend_effect_float(
-        facf0, facf1, context->rectx, total_lines, rect1, rect2, seq->blend_mode, rect_out);
-  }
-  else {
-    unsigned char *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-    slice_get_byte_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-    do_blend_effect_byte(
-        facf0, facf1, context->rectx, total_lines, rect1, rect2, seq->blend_mode, rect_out);
-  }
-}
-/*********************** Color Mix Effect  *************************/
-static void init_colormix_effect(Sequence *seq)
-{
-  ColorMixVars *data;
-
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-  seq->effectdata = MEM_callocN(sizeof(ColorMixVars), "colormixvars");
-  data = (ColorMixVars *)seq->effectdata;
-  data->blend_effect = SEQ_TYPE_OVERLAY;
-  data->factor = 1.0f;
-}
-
-static void do_colormix_effect(const SeqRenderData *context,
-                               Sequence *seq,
-                               float UNUSED(cfra),
-                               float UNUSED(facf0),
-                               float UNUSED(facf1),
-                               ImBuf *ibuf1,
-                               ImBuf *ibuf2,
-                               ImBuf *UNUSED(ibuf3),
-                               int start_line,
-                               int total_lines,
-                               ImBuf *out)
-{
-  float facf;
-
-  ColorMixVars *data = seq->effectdata;
-  facf = data->factor;
-
-  if (out->rect_float) {
-    float *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-    slice_get_float_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-    do_blend_effect_float(
-        facf, facf, context->rectx, total_lines, rect1, rect2, data->blend_effect, rect_out);
-  }
-  else {
-    unsigned char *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-    slice_get_byte_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-    do_blend_effect_byte(
-        facf, facf, context->rectx, total_lines, rect1, rect2, data->blend_effect, rect_out);
-  }
-}
-
-/*********************** Wipe *************************/
-
-typedef struct WipeZone {
-  float angle;
-  int flip;
-  int xo, yo;
-  int width;
-  float pythangle;
-} WipeZone;
-
-static void precalc_wipe_zone(WipeZone *wipezone, WipeVars *wipe, int xo, int yo)
-{
-  wipezone->flip = (wipe->angle < 0.0f);
-  wipezone->angle = tanf(fabsf(wipe->angle));
-  wipezone->xo = xo;
-  wipezone->yo = yo;
-  wipezone->width = (int)(wipe->edgeWidth * ((xo + yo) / 2.0f));
-  wipezone->pythangle = 1.0f / sqrtf(wipezone->angle * wipezone->angle + 1.0f);
-}
-
-/* This function calculates the blur band for the wipe effects */
-static float in_band(float width, float dist, int side, int dir)
-{
-  float alpha;
-
-  if (width == 0) {
-    return (float)side;
-  }
-
-  if (width < dist) {
-    return (float)side;
-  }
-
-  if (side == 1) {
-    alpha = (dist + 0.5f * width) / (width);
-  }
-  else {
-    alpha = (0.5f * width - dist) / (width);
-  }
-
-  if (dir == 0) {
-    alpha = 1 - alpha;
-  }
-
-  return alpha;
-}
-
-static float check_zone(WipeZone *wipezone, int x, int y, Sequence *seq, float facf0)
-{
-  float posx, posy, hyp, hyp2, angle, hwidth, b1, b2, b3, pointdist;
-  /* some future stuff */
-  /* float hyp3, hyp4, b4, b5 */
-  float temp1, temp2, temp3, temp4; /* some placeholder variables */
-  int xo = wipezone->xo;
-  int yo = wipezone->yo;
-  float halfx = xo * 0.5f;
-  float halfy = yo * 0.5f;
-  float widthf, output = 0;
-  WipeVars *wipe = (WipeVars *)seq->effectdata;
-  int width;
-
-  if (wipezone->flip) {
-    x = xo - x;
-  }
-  angle = wipezone->angle;
-
-  if (wipe->forward) {
-    posx = facf0 * xo;
-    posy = facf0 * yo;
-  }
-  else {
-    posx = xo - facf0 * xo;
-    posy = yo - facf0 * yo;
-  }
-
-  switch (wipe->wipetype) {
-    case DO_SINGLE_WIPE:
-      width = min_ii(wipezone->width, facf0 * yo);
-      width = min_ii(width, yo - facf0 * yo);
-
-      if (angle == 0.0f) {
-        b1 = posy;
-        b2 = y;
-        hyp = fabsf(y - posy);
-      }
-      else {
-        b1 = posy - (-angle) * posx;
-        b2 = y - (-angle) * x;
-        hyp = fabsf(angle * x + y + (-posy - angle * posx)) * wipezone->pythangle;
-      }
-
-      if (angle < 0) {
-        temp1 = b1;
-        b1 = b2;
-        b2 = temp1;
-      }
-
-      if (wipe->forward) {
-        if (b1 < b2) {
-          output = in_band(width, hyp, 1, 1);
-        }
-        else {
-          output = in_band(width, hyp, 0, 1);
-        }
-      }
-      else {
-        if (b1 < b2) {
-          output = in_band(width, hyp, 0, 1);
-        }
-        else {
-          output = in_band(width, hyp, 1, 1);
-        }
-      }
-      break;
-
-    case DO_DOUBLE_WIPE:
-      if (!wipe->forward) {
-        facf0 = 1.0f - facf0; /* Go the other direction */
-      }
-
-      width = wipezone->width; /* calculate the blur width */
-      hwidth = width * 0.5f;
-      if (angle == 0) {
-        b1 = posy * 0.5f;
-        b3 = yo - posy * 0.5f;
-        b2 = y;
-
-        hyp = fabsf(y - posy * 0.5f);
-        hyp2 = fabsf(y - (yo - posy * 0.5f));
-      }
-      else {
-        b1 = posy * 0.5f - (-angle) * posx * 0.5f;
-        b3 = (yo - posy * 0.5f) - (-angle) * (xo - posx * 0.5f);
-        b2 = y - (-angle) * x;
-
-        hyp = fabsf(angle * x + y + (-posy * 0.5f - angle * posx * 0.5f)) * wipezone->pythangle;
-        hyp2 = fabsf(angle * x + y + (-(yo - posy * 0.5f) - angle * (xo - posx * 0.5f))) *
-               wipezone->pythangle;
-      }
-
-      hwidth = min_ff(hwidth, fabsf(b3 - b1) / 2.0f);
-
-      if (b2 < b1 && b2 < b3) {
-        output = in_band(hwidth, hyp, 0, 1);
-      }
-      else if (b2 > b1 && b2 > b3) {
-        output = in_band(hwidth, hyp2, 0, 1);
-      }
-      else {
-        if (hyp < hwidth && hyp2 > hwidth) {
-          output = in_band(hwidth, hyp, 1, 1);
-        }
-        else if (hyp > hwidth && hyp2 < hwidth) {
-          output = in_band(hwidth, hyp2, 1, 1);
-        }
-        else {
-          output = in_band(hwidth, hyp2, 1, 1) * in_band(hwidth, hyp, 1, 1);
-        }
-      }
-      if (!wipe->forward) {
-        output = 1 - output;
-      }
-      break;
-    case DO_CLOCK_WIPE:
-      /*
-       * temp1: angle of effect center in rads
-       * temp2: angle of line through (halfx, halfy) and (x, y) in rads
-       * temp3: angle of low side of blur
-       * temp4: angle of high side of blur
-       */
-      output = 1.0f - facf0;
-      widthf = wipe->edgeWidth * 2.0f * (float)M_PI;
-      temp1 = 2.0f * (float)M_PI * facf0;
-
-      if (wipe->forward) {
-        temp1 = 2.0f * (float)M_PI - temp1;
-      }
-
-      x = x - halfx;
-      y = y - halfy;
-
-      temp2 = asin(abs(y) / hypot(x, y));
-      if (x <= 0 && y >= 0) {
-        temp2 = (float)M_PI - temp2;
-      }
-      else if (x <= 0 && y <= 0) {
-        temp2 += (float)M_PI;
-      }
-      else if (x >= 0 && y <= 0) {
-        temp2 = 2.0f * (float)M_PI - temp2;
-      }
-
-      if (wipe->forward) {
-        temp3 = temp1 - (widthf * 0.5f) * facf0;
-        temp4 = temp1 + (widthf * 0.5f) * (1 - facf0);
-      }
-      else {
-        temp3 = temp1 - (widthf * 0.5f) * (1 - facf0);
-        temp4 = temp1 + (widthf * 0.5f) * facf0;
-      }
-      if (temp3 < 0) {
-        temp3 = 0;
-      }
-      if (temp4 > 2.0f * (float)M_PI) {
-        temp4 = 2.0f * (float)M_PI;
-      }
-
-      if (temp2 < temp3) {
-        output = 0;
-      }
-      else if (temp2 > temp4) {
-        output = 1;
-      }
-      else {
-        output = (temp2 - temp3) / (temp4 - temp3);
-      }
-      if (x == 0 && y == 0) {
-        output = 1;
-      }
-      if (output != output) {
-        output = 1;
-      }
-      if (wipe->forward) {
-        output = 1 - output;
-      }
-      break;
-    case DO_IRIS_WIPE:
-      if (xo > yo) {
-        yo = xo;
-      }
-      else {
-        xo = yo;
-      }
-
-      if (!wipe->forward) {
-        facf0 = 1 - facf0;
-      }
-
-      width = wipezone->width;
-      hwidth = width * 0.5f;
-
-      temp1 = (halfx - (halfx)*facf0);
-      pointdist = hypotf(temp1, temp1);
-
-      temp2 = hypotf(halfx - x, halfy - y);
-      if (temp2 > pointdist) {
-        output = in_band(hwidth, fabsf(temp2 - pointdist), 0, 1);
-      }
-      else {
-        output = in_band(hwidth, fabsf(temp2 - pointdist), 1, 1);
-      }
-
-      if (!wipe->forward) {
-        output = 1 - output;
-      }
-
-      break;
-  }
-  if (output < 0) {
-    output = 0;
-  }
-  else if (output > 1) {
-    output = 1;
-  }
-  return output;
-}
-
-static void init_wipe_effect(Sequence *seq)
-{
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-
-  seq->effectdata = MEM_callocN(sizeof(WipeVars), "wipevars");
-}
-
-static int num_inputs_wipe(void)
-{
-  return 2;
-}
-
-static void free_wipe_effect(Sequence *seq, const bool UNUSED(do_id_user))
-{
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-
-  seq->effectdata = NULL;
-}
-
-static void copy_wipe_effect(Sequence *dst, Sequence *src, const int UNUSED(flag))
-{
-  dst->effectdata = MEM_dupallocN(src->effectdata);
-}
-
-static void do_wipe_effect_byte(Sequence *seq,
-                                float facf0,
-                                float UNUSED(facf1),
-                                int x,
-                                int y,
-                                unsigned char *rect1,
-                                unsigned char *rect2,
-                                unsigned char *out)
-{
-  WipeZone wipezone;
-  WipeVars *wipe = (WipeVars *)seq->effectdata;
-  int xo, yo;
-  unsigned char *cp1, *cp2, *rt;
-
-  precalc_wipe_zone(&wipezone, wipe, x, y);
-
-  cp1 = rect1;
-  cp2 = rect2;
-  rt = out;
-
-  xo = x;
-  yo = y;
-  for (y = 0; y < yo; y++) {
-    for (x = 0; x < xo; x++) {
-      float check = check_zone(&wipezone, x, y, seq, facf0);
-      if (check) {
-        if (cp1) {
-          float rt1[4], rt2[4], tempc[4];
-
-          straight_uchar_to_premul_float(rt1, cp1);
-          straight_uchar_to_premul_float(rt2, cp2);
-
-          tempc[0] = rt1[0] * check + rt2[0] * (1 - check);
-          tempc[1] = rt1[1] * check + rt2[1] * (1 - check);
-          tempc[2] = rt1[2] * check + rt2[2] * (1 - check);
-          tempc[3] = rt1[3] * check + rt2[3] * (1 - check);
-
-          premul_float_to_straight_uchar(rt, tempc);
-        }
-        else {
-          rt[0] = 0;
-          rt[1] = 0;
-          rt[2] = 0;
-          rt[3] = 255;
-        }
-      }
-      else {
-        if (cp2) {
-          rt[0] = cp2[0];
-          rt[1] = cp2[1];
-          rt[2] = cp2[2];
-          rt[3] = cp2[3];
-        }
-        else {
-          rt[0] = 0;
-          rt[1] = 0;
-          rt[2] = 0;
-          rt[3] = 255;
-        }
-      }
-
-      rt += 4;
-      if (cp1 != NULL) {
-        cp1 += 4;
-      }
-      if (cp2 != NULL) {
-        cp2 += 4;
-      }
-    }
-  }
-}
-
-static void do_wipe_effect_float(Sequence *seq,
-                                 float facf0,
-                                 float UNUSED(facf1),
-                                 int x,
-                                 int y,
-                                 float *rect1,
-                                 float *rect2,
-                                 float *out)
-{
-  WipeZone wipezone;
-  WipeVars *wipe = (WipeVars *)seq->effectdata;
-  int xo, yo;
-  float *rt1, *rt2, *rt;
-
-  precalc_wipe_zone(&wipezone, wipe, x, y);
-
-  rt1 = rect1;
-  rt2 = rect2;
-  rt = out;
-
-  xo = x;
-  yo = y;
-  for (y = 0; y < yo; y++) {
-    for (x = 0; x < xo; x++) {
-      float check = check_zone(&wipezone, x, y, seq, facf0);
-      if (check) {
-        if (rt1) {
-          rt[0] = rt1[0] * check + rt2[0] * (1 - check);
-          rt[1] = rt1[1] * check + rt2[1] * (1 - check);
-          rt[2] = rt1[2] * check + rt2[2] * (1 - check);
-          rt[3] = rt1[3] * check + rt2[3] * (1 - check);
-        }
-        else {
-          rt[0] = 0;
-          rt[1] = 0;
-          rt[2] = 0;
-          rt[3] = 1.0;
-        }
-      }
-      else {
-        if (rt2) {
-          rt[0] = rt2[0];
-          rt[1] = rt2[1];
-          rt[2] = rt2[2];
-          rt[3] = rt2[3];
-        }
-        else {
-          rt[0] = 0;
-          rt[1] = 0;
-          rt[2] = 0;
-          rt[3] = 1.0;
-        }
-      }
-
-      rt += 4;
-      if (rt1 != NULL) {
-        rt1 += 4;
-      }
-      if (rt2 != NULL) {
-        rt2 += 4;
-      }
-    }
-  }
-}
-
-static ImBuf *do_wipe_effect(const SeqRenderData *context,
-                             Sequence *seq,
-                             float UNUSED(cfra),
-                             float facf0,
-                             float facf1,
-                             ImBuf *ibuf1,
-                             ImBuf *ibuf2,
-                             ImBuf *ibuf3)
-{
-  ImBuf *out = prepare_effect_imbufs(context, ibuf1, ibuf2, ibuf3);
-
-  if (out->rect_float) {
-    do_wipe_effect_float(seq,
-                         facf0,
-                         facf1,
-                         context->rectx,
-                         context->recty,
-                         ibuf1->rect_float,
-                         ibuf2->rect_float,
-                         out->rect_float);
-  }
-  else {
-    do_wipe_effect_byte(seq,
-                        facf0,
-                        facf1,
-                        context->rectx,
-                        context->recty,
-                        (unsigned char *)ibuf1->rect,
-                        (unsigned char *)ibuf2->rect,
-                        (unsigned char *)out->rect);
-  }
-
-  return out;
-}
-
-/*********************** Transform *************************/
-
-static void init_transform_effect(Sequence *seq)
-{
-  TransformVars *transform;
-
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-
-  seq->effectdata = MEM_callocN(sizeof(TransformVars), "transformvars");
-
-  transform = (TransformVars *)seq->effectdata;
-
-  transform->ScalexIni = 1.0f;
-  transform->ScaleyIni = 1.0f;
-
-  transform->xIni = 0.0f;
-  transform->yIni = 0.0f;
-
-  transform->rotIni = 0.0f;
-
-  transform->interpolation = 1;
-  transform->percent = 1;
-  transform->uniform_scale = 0;
-}
-
-static int num_inputs_transform(void)
-{
-  return 1;
-}
-
-static void free_transform_effect(Sequence *seq, const bool UNUSED(do_id_user))
-{
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-  seq->effectdata = NULL;
-}
-
-static void copy_transform_effect(Sequence *dst, Sequence *src, const int UNUSED(flag))
-{
-  dst->effectdata = MEM_dupallocN(src->effectdata);
-}
-
-static void transform_image(int x,
-                            int y,
-                            int start_line,
-                            int total_lines,
-                            ImBuf *ibuf1,
-                            ImBuf *out,
-                            float scale_x,
-                            float scale_y,
-                            float translate_x,
-                            float translate_y,
-                            float rotate,
-                            int interpolation)
-{
-  /* Rotate */
-  float s = sinf(rotate);
-  float c = cosf(rotate);
-
-  for (int yi = start_line; yi < start_line + total_lines; yi++) {
-    for (int xi = 0; xi < x; xi++) {
-      /* translate point */
-      float xt = xi - translate_x;
-      float yt = yi - translate_y;
-
-      /* rotate point with center ref */
-      float xr = c * xt + s * yt;
-      float yr = -s * xt + c * yt;
-
-      /* scale point with center ref */
-      xt = xr / scale_x;
-      yt = yr / scale_y;
-
-      /* undo reference center point  */
-      xt += (x / 2.0f);
-      yt += (y / 2.0f);
-
-      /* interpolate */
-      switch (interpolation) {
-        case 0:
-          nearest_interpolation(ibuf1, out, xt, yt, xi, yi);
-          break;
-        case 1:
-          bilinear_interpolation(ibuf1, out, xt, yt, xi, yi);
-          break;
-        case 2:
-          bicubic_interpolation(ibuf1, out, xt, yt, xi, yi);
-          break;
-      }
-    }
-  }
-}
-
-static void do_transform_effect(const SeqRenderData *context,
-                                Sequence *seq,
-                                float UNUSED(cfra),
-                                float UNUSED(facf0),
-                                float UNUSED(facf1),
-                                ImBuf *ibuf1,
-                                ImBuf *UNUSED(ibuf2),
-                                ImBuf *UNUSED(ibuf3),
-                                int start_line,
-                                int total_lines,
-                                ImBuf *out)
-{
-  Scene *scene = context->scene;
-  TransformVars *transform = (TransformVars *)seq->effectdata;
-  float scale_x, scale_y, translate_x, translate_y, rotate_radians;
-
-  /* Scale */
-  if (transform->uniform_scale) {
-    scale_x = scale_y = transform->ScalexIni;
-  }
-  else {
-    scale_x = transform->ScalexIni;
-    scale_y = transform->ScaleyIni;
-  }
-
-  int x = context->rectx;
-  int y = context->recty;
-
-  /* Translate */
-  if (!transform->percent) {
-    float rd_s = (scene->r.size / 100.0f);
-
-    translate_x = transform->xIni * rd_s + (x / 2.0f);
-    translate_y = transform->yIni * rd_s + (y / 2.0f);
-  }
-  else {
-    translate_x = x * (transform->xIni / 100.0f) + (x / 2.0f);
-    translate_y = y * (transform->yIni / 100.0f) + (y / 2.0f);
-  }
-
-  /* Rotate */
-  rotate_radians = DEG2RADF(transform->rotIni);
-
-  transform_image(x,
-                  y,
-                  start_line,
-                  total_lines,
-                  ibuf1,
-                  out,
-                  scale_x,
-                  scale_y,
-                  translate_x,
-                  translate_y,
-                  rotate_radians,
-                  transform->interpolation);
-}
-
-/*********************** Glow *************************/
-
-static void RVBlurBitmap2_float(float *map, int width, int height, float blur, int quality)
-{
-  /* Much better than the previous blur!
-   * We do the blurring in two passes which is a whole lot faster.
-   * I changed the math around to implement an actual Gaussian distribution.
-   *
-   * Watch out though, it tends to misbehave with large blur values on
-   * a small bitmap. Avoid avoid! */
-
-  float *temp = NULL, *swap;
-  float *filter = NULL;
-  int x, y, i, fx, fy;
-  int index, ix, halfWidth;
-  float fval, k, curColor[4], curColor2[4], weight = 0;
-
-  /* If we're not really blurring, bail out */
-  if (blur <= 0) {
-    return;
-  }
-
-  /* Allocate memory for the tempmap and the blur filter matrix */
-  temp = MEM_mallocN(sizeof(float[4]) * width * height, "blurbitmaptemp");
-  if (!temp) {
-    return;
-  }
-
-  /* Allocate memory for the filter elements */
-  halfWidth = ((quality + 1) * blur);
-  filter = (float *)MEM_mallocN(sizeof(float) * halfWidth * 2, "blurbitmapfilter");
-  if (!filter) {
-    MEM_freeN(temp);
-    return;
-  }
-
-  /* Apparently we're calculating a bell curve based on the standard deviation (or radius)
-   * This code is based on an example posted to comp.graphics.algorithms by
-   * Blancmange <bmange@airdmhor.gen.nz>
-   */
-
-  k = -1.0f / (2.0f * (float)M_PI * blur * blur);
-
-  for (ix = 0; ix < halfWidth; ix++) {
-    weight = (float)exp(k * (ix * ix));
-    filter[halfWidth - ix] = weight;
-    filter[halfWidth + ix] = weight;
-  }
-  filter[0] = weight;
-
-  /* Normalize the array */
-  fval = 0;
-  for (ix = 0; ix < halfWidth * 2; ix++) {
-    fval += filter[ix];
-  }
-
-  for (ix = 0; ix < halfWidth * 2; ix++) {
-    filter[ix] /= fval;
-  }
-
-  /* Blur the rows */
-  for (y = 0; y < height; y++) {
-    /* Do the left & right strips */
-    for (x = 0; x < halfWidth; x++) {
-      fx = 0;
-      zero_v4(curColor);
-      zero_v4(curColor2);
-
-      for (i = x - halfWidth; i < x + halfWidth; i++) {
-        if ((i >= 0) && (i < width)) {
-          index = (i + y * width) * 4;
-          madd_v4_v4fl(curColor, map + index, filter[fx]);
-
-          index = (width - 1 - i + y * width) * 4;
-          madd_v4_v4fl(curColor2, map + index, filter[fx]);
-        }
-        fx++;
-      }
-      index = (x + y * width) * 4;
-      copy_v4_v4(temp + index, curColor);
-
-      index = (width - 1 - x + y * width) * 4;
-      copy_v4_v4(temp + index, curColor2);
-    }
-
-    /* Do the main body */
-    for (x = halfWidth; x < width - halfWidth; x++) {
-      fx = 0;
-      zero_v4(curColor);
-      for (i = x - halfWidth; i < x + halfWidth; i++) {
-        index = (i + y * width) * 4;
-        madd_v4_v4fl(curColor, map + index, filter[fx]);
-        fx++;
-      }
-      index = (x + y * width) * 4;
-      copy_v4_v4(temp + index, curColor);
-    }
-  }
-
-  /* Swap buffers */
-  swap = temp;
-  temp = map;
-  map = swap;
-
-  /* Blur the columns */
-  for (x = 0; x < width; x++) {
-    /* Do the top & bottom strips */
-    for (y = 0; y < halfWidth; y++) {
-      fy = 0;
-      zero_v4(curColor);
-      zero_v4(curColor2);
-      for (i = y - halfWidth; i < y + halfWidth; i++) {
-        if ((i >= 0) && (i < height)) {
-          /* Bottom */
-          index = (x + i * width) * 4;
-          madd_v4_v4fl(curColor, map + index, filter[fy]);
-
-          /* Top */
-          index = (x + (height - 1 - i) * width) * 4;
-          madd_v4_v4fl(curColor2, map + index, filter[fy]);
-        }
-        fy++;
-      }
-      index = (x + y * width) * 4;
-      copy_v4_v4(temp + index, curColor);
-
-      index = (x + (height - 1 - y) * width) * 4;
-      copy_v4_v4(temp + index, curColor2);
-    }
-
-    /* Do the main body */
-    for (y = halfWidth; y < height - halfWidth; y++) {
-      fy = 0;
-      zero_v4(curColor);
-      for (i = y - halfWidth; i < y + halfWidth; i++) {
-        index = (x + i * width) * 4;
-        madd_v4_v4fl(curColor, map + index, filter[fy]);
-        fy++;
-      }
-      index = (x + y * width) * 4;
-      copy_v4_v4(temp + index, curColor);
-    }
-  }
-
-  /* Swap buffers */
-  swap = temp;
-  temp = map; /* map = swap; */ /* UNUSED */
-
-  /* Tidy up   */
-  MEM_freeN(filter);
-  MEM_freeN(temp);
-}
-
-static void RVAddBitmaps_float(float *a, float *b, float *c, int width, int height)
-{
-  int x, y, index;
-
-  for (y = 0; y < height; y++) {
-    for (x = 0; x < width; x++) {
-      index = (x + y * width) * 4;
-      c[index + GlowR] = min_ff(1.0f, a[index + GlowR] + b[index + GlowR]);
-      c[index + GlowG] = min_ff(1.0f, a[index + GlowG] + b[index + GlowG]);
-      c[index + GlowB] = min_ff(1.0f, a[index + GlowB] + b[index + GlowB]);
-      c[index + GlowA] = min_ff(1.0f, a[index + GlowA] + b[index + GlowA]);
-    }
-  }
-}
-
-static void RVIsolateHighlights_float(
-    const float *in, float *out, int width, int height, float threshold, float boost, float clamp)
-{
-  int x, y, index;
-  float intensity;
-
-  for (y = 0; y < height; y++) {
-    for (x = 0; x < width; x++) {
-      index = (x + y * width) * 4;
-
-      /* Isolate the intensity */
-      intensity = (in[index + GlowR] + in[index + GlowG] + in[index + GlowB] - threshold);
-      if (intensity > 0) {
-        out[index + GlowR] = min_ff(clamp, (in[index + GlowR] * boost * intensity));
-        out[index + GlowG] = min_ff(clamp, (in[index + GlowG] * boost * intensity));
-        out[index + GlowB] = min_ff(clamp, (in[index + GlowB] * boost * intensity));
-        out[index + GlowA] = min_ff(clamp, (in[index + GlowA] * boost * intensity));
-      }
-      else {
-        out[index + GlowR] = 0;
-        out[index + GlowG] = 0;
-        out[index + GlowB] = 0;
-        out[index + GlowA] = 0;
-      }
-    }
-  }
-}
-
-static void init_glow_effect(Sequence *seq)
-{
-  GlowVars *glow;
-
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-
-  seq->effectdata = MEM_callocN(sizeof(GlowVars), "glowvars");
-
-  glow = (GlowVars *)seq->effectdata;
-  glow->fMini = 0.25;
-  glow->fClamp = 1.0;
-  glow->fBoost = 0.5;
-  glow->dDist = 3.0;
-  glow->dQuality = 3;
-  glow->bNoComp = 0;
-}
-
-static int num_inputs_glow(void)
-{
-  return 1;
-}
-
-static void free_glow_effect(Sequence *seq, const bool UNUSED(do_id_user))
-{
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-
-  seq->effectdata = NULL;
-}
-
-static void copy_glow_effect(Sequence *dst, Sequence *src, const int UNUSED(flag))
-{
-  dst->effectdata = MEM_dupallocN(src->effectdata);
-}
-
-static void do_glow_effect_byte(Sequence *seq,
-                                int render_size,
-                                float facf0,
-                                float UNUSED(facf1),
-                                int x,
-                                int y,
-                                unsigned char *rect1,
-                                unsigned char *UNUSED(rect2),
-                                unsigned char *out)
-{
-  float *outbuf, *inbuf;
-  GlowVars *glow = (GlowVars *)seq->effectdata;
-
-  inbuf = MEM_mallocN(sizeof(float[4]) * x * y, "glow effect input");
-  outbuf = MEM_mallocN(sizeof(float[4]) * x * y, "glow effect output");
-
-  IMB_buffer_float_from_byte(inbuf, rect1, IB_PROFILE_SRGB, IB_PROFILE_SRGB, false, x, y, x, x);
-  IMB_buffer_float_premultiply(inbuf, x, y);
-
-  RVIsolateHighlights_float(
-      inbuf, outbuf, x, y, glow->fMini * 3.0f, glow->fBoost * facf0, glow->fClamp);
-  RVBlurBitmap2_float(outbuf, x, y, glow->dDist * (render_size / 100.0f), glow->dQuality);
-  if (!glow->bNoComp) {
-    RVAddBitmaps_float(inbuf, outbuf, outbuf, x, y);
-  }
-
-  IMB_buffer_float_unpremultiply(outbuf, x, y);
-  IMB_buffer_byte_from_float(
-      out, outbuf, 4, 0.0f, IB_PROFILE_SRGB, IB_PROFILE_SRGB, false, x, y, x, x);
-
-  MEM_freeN(inbuf);
-  MEM_freeN(outbuf);
-}
-
-static void do_glow_effect_float(Sequence *seq,
-                                 int render_size,
-                                 float facf0,
-                                 float UNUSED(facf1),
-                                 int x,
-                                 int y,
-                                 float *rect1,
-                                 float *UNUSED(rect2),
-                                 float *out)
-{
-  float *outbuf = out;
-  float *inbuf = rect1;
-  GlowVars *glow = (GlowVars *)seq->effectdata;
-
-  RVIsolateHighlights_float(
-      inbuf, outbuf, x, y, glow->fMini * 3.0f, glow->fBoost * facf0, glow->fClamp);
-  RVBlurBitmap2_float(outbuf, x, y, glow->dDist * (render_size / 100.0f), glow->dQuality);
-  if (!glow->bNoComp) {
-    RVAddBitmaps_float(inbuf, outbuf, outbuf, x, y);
-  }
-}
-
-static ImBuf *do_glow_effect(const SeqRenderData *context,
-                             Sequence *seq,
-                             float UNUSED(cfra),
-                             float facf0,
-                             float facf1,
-                             ImBuf *ibuf1,
-                             ImBuf *ibuf2,
-                             ImBuf *ibuf3)
-{
-  ImBuf *out = prepare_effect_imbufs(context, ibuf1, ibuf2, ibuf3);
-
-  int render_size = 100 * context->rectx / context->scene->r.xsch;
-
-  if (out->rect_float) {
-    do_glow_effect_float(seq,
-                         render_size,
-                         facf0,
-                         facf1,
-                         context->rectx,
-                         context->recty,
-                         ibuf1->rect_float,
-                         NULL,
-                         out->rect_float);
-  }
-  else {
-    do_glow_effect_byte(seq,
-                        render_size,
-                        facf0,
-                        facf1,
-                        context->rectx,
-                        context->recty,
-                        (unsigned char *)ibuf1->rect,
-                        NULL,
-                        (unsigned char *)out->rect);
-  }
-
-  return out;
-}
-
-/*********************** Solid color *************************/
-
-static void init_solid_color(Sequence *seq)
-{
-  SolidColorVars *cv;
-
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-
-  seq->effectdata = MEM_callocN(sizeof(SolidColorVars), "solidcolor");
-
-  cv = (SolidColorVars *)seq->effectdata;
-  cv->col[0] = cv->col[1] = cv->col[2] = 0.5;
-}
-
-static int num_inputs_color(void)
-{
-  return 0;
-}
-
-static void free_solid_color(Sequence *seq, const bool UNUSED(do_id_user))
-{
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-
-  seq->effectdata = NULL;
-}
-
-static void copy_solid_color(Sequence *dst, Sequence *src, const int UNUSED(flag))
-{
-  dst->effectdata = MEM_dupallocN(src->effectdata);
-}
-
-static int early_out_color(Sequence *UNUSED(seq), float UNUSED(facf0), float UNUSED(facf1))
-{
-  return EARLY_NO_INPUT;
-}
-
-static ImBuf *do_solid_color(const SeqRenderData *context,
-                             Sequence *seq,
-                             float UNUSED(cfra),
-                             float facf0,
-                             float facf1,
-                             ImBuf *ibuf1,
-                             ImBuf *ibuf2,
-                             ImBuf *ibuf3)
-{
-  ImBuf *out = prepare_effect_imbufs(context, ibuf1, ibuf2, ibuf3);
-
-  SolidColorVars *cv = (SolidColorVars *)seq->effectdata;
-
-  unsigned char *rect;
-  float *rect_float;
-  int x; /*= context->rectx;*/ /*UNUSED*/
-  int y; /*= context->recty;*/ /*UNUSED*/
-
-  if (out->rect) {
-    unsigned char col0[3];
-    unsigned char col1[3];
-
-    col0[0] = facf0 * cv->col[0] * 255;
-    col0[1] = facf0 * cv->col[1] * 255;
-    col0[2] = facf0 * cv->col[2] * 255;
-
-    col1[0] = facf1 * cv->col[0] * 255;
-    col1[1] = facf1 * cv->col[1] * 255;
-    col1[2] = facf1 * cv->col[2] * 255;
-
-    rect = (unsigned char *)out->rect;
-
-    for (y = 0; y < out->y; y++) {
-      for (x = 0; x < out->x; x++, rect += 4) {
-        rect[0] = col0[0];
-        rect[1] = col0[1];
-        rect[2] = col0[2];
-        rect[3] = 255;
-      }
-      y++;
-      if (y < out->y) {
-        for (x = 0; x < out->x; x++, rect += 4) {
-          rect[0] = col1[0];
-          rect[1] = col1[1];
-          rect[2] = col1[2];
-          rect[3] = 255;
-        }
-      }
-    }
-  }
-  else if (out->rect_float) {
-    float col0[3];
-    float col1[3];
-
-    col0[0] = facf0 * cv->col[0];
-    col0[1] = facf0 * cv->col[1];
-    col0[2] = facf0 * cv->col[2];
-
-    col1[0] = facf1 * cv->col[0];
-    col1[1] = facf1 * cv->col[1];
-    col1[2] = facf1 * cv->col[2];
-
-    rect_float = out->rect_float;
-
-    for (y = 0; y < out->y; y++) {
-      for (x = 0; x < out->x; x++, rect_float += 4) {
-        rect_float[0] = col0[0];
-        rect_float[1] = col0[1];
-        rect_float[2] = col0[2];
-        rect_float[3] = 1.0;
-      }
-      y++;
-      if (y < out->y) {
-        for (x = 0; x < out->x; x++, rect_float += 4) {
-          rect_float[0] = col1[0];
-          rect_float[1] = col1[1];
-          rect_float[2] = col1[2];
-          rect_float[3] = 1.0;
-        }
-      }
-    }
-  }
-  return out;
-}
-
-/*********************** Mulitcam *************************/
-
-/* no effect inputs for multicam, we use give_ibuf_seq */
-static int num_inputs_multicam(void)
-{
-  return 0;
-}
-
-static int early_out_multicam(Sequence *UNUSED(seq), float UNUSED(facf0), float UNUSED(facf1))
-{
-  return EARLY_NO_INPUT;
-}
-
-static ImBuf *do_multicam(const SeqRenderData *context,
-                          Sequence *seq,
-                          float cfra,
-                          float UNUSED(facf0),
-                          float UNUSED(facf1),
-                          ImBuf *UNUSED(ibuf1),
-                          ImBuf *UNUSED(ibuf2),
-                          ImBuf *UNUSED(ibuf3))
-{
-  ImBuf *out;
-  Editing *ed;
-  ListBase *seqbasep;
-
-  if (seq->multicam_source == 0 || seq->multicam_source >= seq->machine) {
-    return NULL;
-  }
-
-  ed = context->scene->ed;
-  if (!ed) {
-    return NULL;
-  }
-  seqbasep = BKE_sequence_seqbase(&ed->seqbase, seq);
-  if (!seqbasep) {
-    return NULL;
-  }
-
-  out = BKE_sequencer_give_ibuf_seqbase(context, cfra, seq->multicam_source, seqbasep);
-
-  return out;
-}
-
-/*********************** Adjustment *************************/
-
-/* no effect inputs for adjustment, we use give_ibuf_seq */
-static int num_inputs_adjustment(void)
-{
-  return 0;
-}
-
-static int early_out_adjustment(Sequence *UNUSED(seq), float UNUSED(facf0), float UNUSED(facf1))
-{
-  return EARLY_NO_INPUT;
-}
-
-static ImBuf *do_adjustment_impl(const SeqRenderData *context, Sequence *seq, float cfra)
-{
-  Editing *ed;
-  ListBase *seqbasep;
-  ImBuf *i = NULL;
-
-  ed = context->scene->ed;
-
-  seqbasep = BKE_sequence_seqbase(&ed->seqbase, seq);
-
-  if (seq->machine > 1) {
-    i = BKE_sequencer_give_ibuf_seqbase(context, cfra, seq->machine - 1, seqbasep);
-  }
-
-  /* found nothing? so let's work the way up the metastrip stack, so
-   * that it is possible to group a bunch of adjustment strips into
-   * a metastrip and have that work on everything below the metastrip
-   */
-
-  if (!i) {
-    Sequence *meta;
-
-    meta = BKE_sequence_metastrip(&ed->seqbase, NULL, seq);
-
-    if (meta) {
-      i = do_adjustment_impl(context, meta, cfra);
-    }
-  }
-
-  return i;
-}
-
-static ImBuf *do_adjustment(const SeqRenderData *context,
-                            Sequence *seq,
-                            float cfra,
-                            float UNUSED(facf0),
-                            float UNUSED(facf1),
-                            ImBuf *UNUSED(ibuf1),
-                            ImBuf *UNUSED(ibuf2),
-                            ImBuf *UNUSED(ibuf3))
-{
-  ImBuf *out;
-  Editing *ed;
-
-  ed = context->scene->ed;
-
-  if (!ed) {
-    return NULL;
-  }
-
-  out = do_adjustment_impl(context, seq, cfra);
-
-  return out;
-}
-
-/*********************** Speed *************************/
-
-static void init_speed_effect(Sequence *seq)
-{
-  SpeedControlVars *v;
-
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-
-  seq->effectdata = MEM_callocN(sizeof(SpeedControlVars), "speedcontrolvars");
-
-  v = (SpeedControlVars *)seq->effectdata;
-  v->globalSpeed = 1.0;
-  v->frameMap = NULL;
-  v->flags |= SEQ_SPEED_INTEGRATE; /* should be default behavior */
-  v->length = 0;
-}
-
-static void load_speed_effect(Sequence *seq)
-{
-  SpeedControlVars *v = (SpeedControlVars *)seq->effectdata;
-
-  v->frameMap = NULL;
-  v->length = 0;
-}
-
-static int num_inputs_speed(void)
-{
-  return 1;
-}
-
-static void free_speed_effect(Sequence *seq, const bool UNUSED(do_id_user))
-{
-  SpeedControlVars *v = (SpeedControlVars *)seq->effectdata;
-  if (v->frameMap) {
-    MEM_freeN(v->frameMap);
-  }
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-  seq->effectdata = NULL;
-}
-
-static void copy_speed_effect(Sequence *dst, Sequence *src, const int UNUSED(flag))
-{
-  SpeedControlVars *v;
-  dst->effectdata = MEM_dupallocN(src->effectdata);
-  v = (SpeedControlVars *)dst->effectdata;
-  v->frameMap = NULL;
-  v->length = 0;
-}
-
-static int early_out_speed(Sequence *UNUSED(seq), float UNUSED(facf0), float UNUSED(facf1))
-{
-  return EARLY_DO_EFFECT;
-}
-
-static void store_icu_yrange_speed(Sequence *seq, short UNUSED(adrcode), float *ymin, float *ymax)
-{
-  SpeedControlVars *v = (SpeedControlVars *)seq->effectdata;
-
-  /* if not already done, load / initialize data */
-  BKE_sequence_get_effect(seq);
-
-  if ((v->flags & SEQ_SPEED_INTEGRATE) != 0) {
-    *ymin = -100.0;
-    *ymax = 100.0;
-  }
-  else {
-    if (v->flags & SEQ_SPEED_COMPRESS_IPO_Y) {
-      *ymin = 0.0;
-      *ymax = 1.0;
-    }
-    else {
-      *ymin = 0.0;
-      *ymax = seq->len;
-    }
-  }
-}
-
-void BKE_sequence_effect_speed_rebuild_map(Scene *scene, Sequence *seq, bool force)
-{
-  int cfra;
-  float fallback_fac = 1.0f;
-  SpeedControlVars *v = (SpeedControlVars *)seq->effectdata;
-  FCurve *fcu = NULL;
-  int flags = v->flags;
-
-  /* if not already done, load / initialize data */
-  BKE_sequence_get_effect(seq);
-
-  if ((force == false) && (seq->len == v->length) && (v->frameMap != NULL)) {
-    return;
-  }
-  if ((seq->seq1 == NULL) || (seq->len < 1)) {
-    /* make coverity happy and check for (CID 598) input strip ... */
-    return;
-  }
-
-  /* XXX - new in 2.5x. should we use the animation system this way?
-   * The fcurve is needed because many frames need evaluating at once - campbell */
-  fcu = id_data_find_fcurve(&scene->id, seq, &RNA_Sequence, "speed_factor", 0, NULL);
-  if (!v->frameMap || v->length != seq->len) {
-    if (v->frameMap) {
-      MEM_freeN(v->frameMap);
-    }
-
-    v->length = seq->len;
-
-    v->frameMap = MEM_callocN(sizeof(float) * v->length, "speedcontrol frameMap");
-  }
-
-  fallback_fac = 1.0;
-
-  if (seq->flag & SEQ_USE_EFFECT_DEFAULT_FADE) {
-    if ((seq->seq1->enddisp != seq->seq1->start) && (seq->seq1->len != 0)) {
-      fallback_fac = (float)seq->seq1->len / (float)(seq->seq1->enddisp - seq->seq1->start);
-      flags = SEQ_SPEED_INTEGRATE;
-      fcu = NULL;
-    }
-  }
-  else {
-    /* if there is no fcurve, use value as simple multiplier */
-    if (!fcu) {
-      fallback_fac = seq->speed_fader; /* same as speed_factor in rna*/
-    }
-  }
-
-  if (flags & SEQ_SPEED_INTEGRATE) {
-    float cursor = 0;
-    float facf;
-
-    v->frameMap[0] = 0;
-    v->lastValidFrame = 0;
-
-    for (cfra = 1; cfra < v->length; cfra++) {
-      if (fcu) {
-        facf = evaluate_fcurve(fcu, seq->startdisp + cfra);
-      }
-      else {
-        facf = fallback_fac;
-      }
-      facf *= v->globalSpeed;
-
-      cursor += facf;
-
-      if (cursor >= seq->seq1->len) {
-        v->frameMap[cfra] = seq->seq1->len - 1;
-      }
-      else {
-        v->frameMap[cfra] = cursor;
-        v->lastValidFrame = cfra;
-      }
-    }
-  }
-  else {
-    float facf;
-
-    v->lastValidFrame = 0;
-    for (cfra = 0; cfra < v->length; cfra++) {
-
-      if (fcu) {
-        facf = evaluate_fcurve(fcu, seq->startdisp + cfra);
-      }
-      else {
-        facf = fallback_fac;
-      }
-
-      if (flags & SEQ_SPEED_COMPRESS_IPO_Y) {
-        facf *= seq->seq1->len;
-      }
-      facf *= v->globalSpeed;
-
-      if (facf >= seq->seq1->len) {
-        facf = seq->seq1->len - 1;
-      }
-      else {
-        v->lastValidFrame = cfra;
-      }
-      v->frameMap[cfra] = facf;
-    }
-  }
-}
-
-/* Override cfra when rendering speed effect input. */
-float BKE_sequencer_speed_effect_target_frame_get(const SeqRenderData *context,
-                                                  Sequence *seq,
-                                                  float cfra,
-                                                  int input)
-{
-  int nr = BKE_sequencer_give_stripelem_index(seq, cfra);
-  SpeedControlVars *s = (SpeedControlVars *)seq->effectdata;
-  BKE_sequence_effect_speed_rebuild_map(context->scene, seq, false);
-
-  /* No interpolation. */
-  if ((s->flags & SEQ_SPEED_USE_INTERPOLATION) == 0) {
-    return seq->start + s->frameMap[nr];
-  }
-
-  /* We need to provide current and next image for interpolation. */
-  if (input == 0) { /* Current frame. */
-    return floor(seq->start + s->frameMap[nr]);
-  }
-  /* Next frame. */
-  return ceil(seq->start + s->frameMap[nr]);
-}
-
-static float speed_effect_interpolation_ratio_get(SpeedControlVars *s, Sequence *seq, float cfra)
-{
-  int nr = BKE_sequencer_give_stripelem_index(seq, cfra);
-  return s->frameMap[nr] - floor(s->frameMap[nr]);
-}
-
-static ImBuf *do_speed_effect(const SeqRenderData *context,
-                              Sequence *seq,
-                              float cfra,
-                              float facf0,
-                              float facf1,
-                              ImBuf *ibuf1,
-                              ImBuf *ibuf2,
-                              ImBuf *ibuf3)
-{
-  SpeedControlVars *s = (SpeedControlVars *)seq->effectdata;
-  struct SeqEffectHandle cross_effect = get_sequence_effect_impl(SEQ_TYPE_CROSS);
-  ImBuf *out;
-
-  if (s->flags & SEQ_SPEED_USE_INTERPOLATION) {
-    out = prepare_effect_imbufs(context, ibuf1, ibuf2, ibuf3);
-    facf0 = facf1 = speed_effect_interpolation_ratio_get(s, seq, cfra);
-    /* Current frame is ibuf1, next frame is ibuf2. */
-    out = BKE_sequencer_effect_execute_threaded(
-        &cross_effect, context, NULL, cfra, facf0, facf1, ibuf1, ibuf2, ibuf3);
-    return out;
-  }
-
-  /* No interpolation. */
-  return IMB_dupImBuf(ibuf1);
-}
-
-/*********************** overdrop *************************/
-
-static void do_overdrop_effect(const SeqRenderData *context,
-                               Sequence *UNUSED(seq),
-                               float UNUSED(cfra),
-                               float facf0,
-                               float facf1,
-                               ImBuf *ibuf1,
-                               ImBuf *ibuf2,
-                               ImBuf *UNUSED(ibuf3),
-                               int start_line,
-                               int total_lines,
-                               ImBuf *out)
-{
-  int x = context->rectx;
-  int y = total_lines;
-
-  if (out->rect_float) {
-    float *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_float_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_drop_effect_float(facf0, facf1, x, y, rect1, rect2, rect_out);
-    do_alphaover_effect_float(facf0, facf1, x, y, rect1, rect2, rect_out);
-  }
-  else {
-    unsigned char *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_byte_buffers(
-        context, ibuf1, ibuf2, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_drop_effect_byte(facf0, facf1, x, y, rect1, rect2, rect_out);
-    do_alphaover_effect_byte(facf0, facf1, x, y, rect1, rect2, rect_out);
-  }
-}
-
-/*********************** Gaussian Blur *************************/
-
-/* NOTE: This gaussian blur implementation accumulates values in the square
- * kernel rather that doing X direction and then Y direction because of the
- * lack of using multiple-staged filters.
- *
- * Once we can we'll implement a way to apply filter as multiple stages we
- * can optimize hell of a lot in here.
- */
-
-static void init_gaussian_blur_effect(Sequence *seq)
-{
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-
-  seq->effectdata = MEM_callocN(sizeof(WipeVars), "wipevars");
-}
-
-static int num_inputs_gaussian_blur(void)
-{
-  return 1;
-}
-
-static void free_gaussian_blur_effect(Sequence *seq, const bool UNUSED(do_id_user))
-{
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-
-  seq->effectdata = NULL;
-}
-
-static void copy_gaussian_blur_effect(Sequence *dst, Sequence *src, const int UNUSED(flag))
-{
-  dst->effectdata = MEM_dupallocN(src->effectdata);
-}
-
-static int early_out_gaussian_blur(Sequence *seq, float UNUSED(facf0), float UNUSED(facf1))
-{
-  GaussianBlurVars *data = seq->effectdata;
-  if (data->size_x == 0.0f && data->size_y == 0) {
-    return EARLY_USE_INPUT_1;
-  }
-  return EARLY_DO_EFFECT;
-}
-
-/* TODO(sergey): De-duplicate with compositor. */
-static float *make_gaussian_blur_kernel(float rad, int size)
-{
-  float *gausstab, sum, val;
-  float fac;
-  int i, n;
-
-  n = 2 * size + 1;
-
-  gausstab = (float *)MEM_mallocN(sizeof(float) * n, __func__);
-
-  sum = 0.0f;
-  fac = (rad > 0.0f ? 1.0f / rad : 0.0f);
-  for (i = -size; i <= size; i++) {
-    val = RE_filter_value(R_FILTER_GAUSS, (float)i * fac);
-    sum += val;
-    gausstab[i + size] = val;
-  }
-
-  sum = 1.0f / sum;
-  for (i = 0; i < n; i++) {
-    gausstab[i] *= sum;
-  }
-
-  return gausstab;
-}
-
-static void do_gaussian_blur_effect_byte_x(Sequence *seq,
-                                           int start_line,
-                                           int x,
-                                           int y,
-                                           int frame_width,
-                                           int UNUSED(frame_height),
-                                           const unsigned char *rect,
-                                           unsigned char *out)
-{
-#define INDEX(_x, _y) (((_y) * (x) + (_x)) * 4)
-  GaussianBlurVars *data = seq->effectdata;
-  const int size_x = (int)(data->size_x + 0.5f);
-  int i, j;
-
-  /* Make gaussian weight table. */
-  float *gausstab_x;
-  gausstab_x = make_gaussian_blur_kernel(data->size_x, size_x);
-
-  for (i = 0; i < y; i++) {
-    for (j = 0; j < x; j++) {
-      int out_index = INDEX(j, i);
-      float accum[4] = {0.0f, 0.0f, 0.0f, 0.0f};
-      float accum_weight = 0.0f;
-
-      for (int current_x = j - size_x; current_x <= j + size_x; current_x++) {
-        if (current_x < 0 || current_x >= frame_width) {
-          /* Out of bounds. */
-          continue;
-        }
-        int index = INDEX(current_x, i + start_line);
-        float weight = gausstab_x[current_x - j + size_x];
-        accum[0] += rect[index] * weight;
-        accum[1] += rect[index + 1] * weight;
-        accum[2] += rect[index + 2] * weight;
-        accum[3] += rect[index + 3] * weight;
-        accum_weight += weight;
-      }
-
-      float inv_accum_weight = 1.0f / accum_weight;
-      out[out_index + 0] = accum[0] * inv_accum_weight;
-      out[out_index + 1] = accum[1] * inv_accum_weight;
-      out[out_index + 2] = accum[2] * inv_accum_weight;
-      out[out_index + 3] = accum[3] * inv_accum_weight;
-    }
-  }
-
-  MEM_freeN(gausstab_x);
-#undef INDEX
-}
-
-static void do_gaussian_blur_effect_byte_y(Sequence *seq,
-                                           int start_line,
-                                           int x,
-                                           int y,
-                                           int UNUSED(frame_width),
-                                           int frame_height,
-                                           const unsigned char *rect,
-                                           unsigned char *out)
-{
-#define INDEX(_x, _y) (((_y) * (x) + (_x)) * 4)
-  GaussianBlurVars *data = seq->effectdata;
-  const int size_y = (int)(data->size_y + 0.5f);
-  int i, j;
-
-  /* Make gaussian weight table. */
-  float *gausstab_y;
-  gausstab_y = make_gaussian_blur_kernel(data->size_y, size_y);
-
-  for (i = 0; i < y; i++) {
-    for (j = 0; j < x; j++) {
-      int out_index = INDEX(j, i);
-      float accum[4] = {0.0f, 0.0f, 0.0f, 0.0f};
-      float accum_weight = 0.0f;
-      for (int current_y = i - size_y; current_y <= i + size_y; current_y++) {
-        if (current_y < -start_line || current_y + start_line >= frame_height) {
-          /* Out of bounds. */
-          continue;
-        }
-        int index = INDEX(j, current_y + start_line);
-        float weight = gausstab_y[current_y - i + size_y];
-        accum[0] += rect[index] * weight;
-        accum[1] += rect[index + 1] * weight;
-        accum[2] += rect[index + 2] * weight;
-        accum[3] += rect[index + 3] * weight;
-        accum_weight += weight;
-      }
-      float inv_accum_weight = 1.0f / accum_weight;
-      out[out_index + 0] = accum[0] * inv_accum_weight;
-      out[out_index + 1] = accum[1] * inv_accum_weight;
-      out[out_index + 2] = accum[2] * inv_accum_weight;
-      out[out_index + 3] = accum[3] * inv_accum_weight;
-    }
-  }
-
-  MEM_freeN(gausstab_y);
-#undef INDEX
-}
-
-static void do_gaussian_blur_effect_float_x(Sequence *seq,
-                                            int start_line,
-                                            int x,
-                                            int y,
-                                            int frame_width,
-                                            int UNUSED(frame_height),
-                                            float *rect,
-                                            float *out)
-{
-#define INDEX(_x, _y) (((_y) * (x) + (_x)) * 4)
-  GaussianBlurVars *data = seq->effectdata;
-  const int size_x = (int)(data->size_x + 0.5f);
-  int i, j;
-
-  /* Make gaussian weight table. */
-  float *gausstab_x;
-  gausstab_x = make_gaussian_blur_kernel(data->size_x, size_x);
-
-  for (i = 0; i < y; i++) {
-    for (j = 0; j < x; j++) {
-      int out_index = INDEX(j, i);
-      float accum[4] = {0.0f, 0.0f, 0.0f, 0.0f};
-      float accum_weight = 0.0f;
-      for (int current_x = j - size_x; current_x <= j + size_x; current_x++) {
-        if (current_x < 0 || current_x >= frame_width) {
-          /* Out of bounds. */
-          continue;
-        }
-        int index = INDEX(current_x, i + start_line);
-        float weight = gausstab_x[current_x - j + size_x];
-        madd_v4_v4fl(accum, &rect[index], weight);
-        accum_weight += weight;
-      }
-      mul_v4_v4fl(&out[out_index], accum, 1.0f / accum_weight);
-    }
-  }
-
-  MEM_freeN(gausstab_x);
-#undef INDEX
-}
-
-static void do_gaussian_blur_effect_float_y(Sequence *seq,
-                                            int start_line,
-                                            int x,
-                                            int y,
-                                            int UNUSED(frame_width),
-                                            int frame_height,
-                                            float *rect,
-                                            float *out)
-{
-#define INDEX(_x, _y) (((_y) * (x) + (_x)) * 4)
-  GaussianBlurVars *data = seq->effectdata;
-  const int size_y = (int)(data->size_y + 0.5f);
-  int i, j;
-
-  /* Make gaussian weight table. */
-  float *gausstab_y;
-  gausstab_y = make_gaussian_blur_kernel(data->size_y, size_y);
-
-  for (i = 0; i < y; i++) {
-    for (j = 0; j < x; j++) {
-      int out_index = INDEX(j, i);
-      float accum[4] = {0.0f, 0.0f, 0.0f, 0.0f};
-      float accum_weight = 0.0f;
-      for (int current_y = i - size_y; current_y <= i + size_y; current_y++) {
-        if (current_y < -start_line || current_y + start_line >= frame_height) {
-          /* Out of bounds. */
-          continue;
-        }
-        int index = INDEX(j, current_y + start_line);
-        float weight = gausstab_y[current_y - i + size_y];
-        madd_v4_v4fl(accum, &rect[index], weight);
-        accum_weight += weight;
-      }
-      mul_v4_v4fl(&out[out_index], accum, 1.0f / accum_weight);
-    }
-  }
-
-  MEM_freeN(gausstab_y);
-#undef INDEX
-}
-
-static void do_gaussian_blur_effect_x_cb(const SeqRenderData *context,
-                                         Sequence *seq,
-                                         ImBuf *ibuf,
-                                         int start_line,
-                                         int total_lines,
-                                         ImBuf *out)
-{
-  if (out->rect_float) {
-    float *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_float_buffers(
-        context, ibuf, NULL, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_gaussian_blur_effect_float_x(seq,
-                                    start_line,
-                                    context->rectx,
-                                    total_lines,
-                                    context->rectx,
-                                    context->recty,
-                                    ibuf->rect_float,
-                                    rect_out);
-  }
-  else {
-    unsigned char *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_byte_buffers(
-        context, ibuf, NULL, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_gaussian_blur_effect_byte_x(seq,
-                                   start_line,
-                                   context->rectx,
-                                   total_lines,
-                                   context->rectx,
-                                   context->recty,
-                                   (unsigned char *)ibuf->rect,
-                                   rect_out);
-  }
-}
-
-static void do_gaussian_blur_effect_y_cb(const SeqRenderData *context,
-                                         Sequence *seq,
-                                         ImBuf *ibuf,
-                                         int start_line,
-                                         int total_lines,
-                                         ImBuf *out)
-{
-  if (out->rect_float) {
-    float *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_float_buffers(
-        context, ibuf, NULL, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_gaussian_blur_effect_float_y(seq,
-                                    start_line,
-                                    context->rectx,
-                                    total_lines,
-                                    context->rectx,
-                                    context->recty,
-                                    ibuf->rect_float,
-                                    rect_out);
-  }
-  else {
-    unsigned char *rect1 = NULL, *rect2 = NULL, *rect_out = NULL;
-
-    slice_get_byte_buffers(
-        context, ibuf, NULL, NULL, out, start_line, &rect1, &rect2, NULL, &rect_out);
-
-    do_gaussian_blur_effect_byte_y(seq,
-                                   start_line,
-                                   context->rectx,
-                                   total_lines,
-                                   context->rectx,
-                                   context->recty,
-                                   (unsigned char *)ibuf->rect,
-                                   rect_out);
-  }
-}
-
-typedef struct RenderGaussianBlurEffectInitData {
-  const SeqRenderData *context;
-  Sequence *seq;
-  ImBuf *ibuf;
-  ImBuf *out;
-} RenderGaussianBlurEffectInitData;
-
-typedef struct RenderGaussianBlurEffectThread {
-  const SeqRenderData *context;
-  Sequence *seq;
-  ImBuf *ibuf;
-  ImBuf *out;
-  int start_line, tot_line;
-} RenderGaussianBlurEffectThread;
-
-static void render_effect_execute_init_handle(void *handle_v,
-                                              int start_line,
-                                              int tot_line,
-                                              void *init_data_v)
-{
-  RenderGaussianBlurEffectThread *handle = (RenderGaussianBlurEffectThread *)handle_v;
-  RenderGaussianBlurEffectInitData *init_data = (RenderGaussianBlurEffectInitData *)init_data_v;
-
-  handle->context = init_data->context;
-  handle->seq = init_data->seq;
-  handle->ibuf = init_data->ibuf;
-  handle->out = init_data->out;
-
-  handle->start_line = start_line;
-  handle->tot_line = tot_line;
-}
-
-static void *render_effect_execute_do_x_thread(void *thread_data_v)
-{
-  RenderGaussianBlurEffectThread *thread_data = (RenderGaussianBlurEffectThread *)thread_data_v;
-  do_gaussian_blur_effect_x_cb(thread_data->context,
-                               thread_data->seq,
-                               thread_data->ibuf,
-                               thread_data->start_line,
-                               thread_data->tot_line,
-                               thread_data->out);
-  return NULL;
-}
-
-static void *render_effect_execute_do_y_thread(void *thread_data_v)
-{
-  RenderGaussianBlurEffectThread *thread_data = (RenderGaussianBlurEffectThread *)thread_data_v;
-  do_gaussian_blur_effect_y_cb(thread_data->context,
-                               thread_data->seq,
-                               thread_data->ibuf,
-                               thread_data->start_line,
-                               thread_data->tot_line,
-                               thread_data->out);
-
-  return NULL;
-}
-
-static ImBuf *do_gaussian_blur_effect(const SeqRenderData *context,
-                                      Sequence *seq,
-                                      float UNUSED(cfra),
-                                      float UNUSED(facf0),
-                                      float UNUSED(facf1),
-                                      ImBuf *ibuf1,
-                                      ImBuf *UNUSED(ibuf2),
-                                      ImBuf *UNUSED(ibuf3))
-{
-  ImBuf *out = prepare_effect_imbufs(context, ibuf1, NULL, NULL);
-
-  RenderGaussianBlurEffectInitData init_data;
-
-  init_data.context = context;
-  init_data.seq = seq;
-  init_data.ibuf = ibuf1;
-  init_data.out = out;
-
-  IMB_processor_apply_threaded(out->y,
-                               sizeof(RenderGaussianBlurEffectThread),
-                               &init_data,
-                               render_effect_execute_init_handle,
-                               render_effect_execute_do_x_thread);
-
-  ibuf1 = out;
-  init_data.ibuf = ibuf1;
-  out = prepare_effect_imbufs(context, ibuf1, NULL, NULL);
-  init_data.out = out;
-
-  IMB_processor_apply_threaded(out->y,
-                               sizeof(RenderGaussianBlurEffectThread),
-                               &init_data,
-                               render_effect_execute_init_handle,
-                               render_effect_execute_do_y_thread);
-
-  IMB_freeImBuf(ibuf1);
-
-  return out;
-}
-
-/*********************** text *************************/
-
-static void init_text_effect(Sequence *seq)
-{
-  TextVars *data;
-
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-
-  data = seq->effectdata = MEM_callocN(sizeof(TextVars), "textvars");
-  data->text_font = NULL;
-  data->text_blf_id = -1;
-  data->text_size = 30;
-
-  copy_v4_fl(data->color, 1.0f);
-  data->shadow_color[3] = 1.0f;
-
-  BLI_strncpy(data->text, "Text", sizeof(data->text));
-
-  data->loc[0] = 0.5f;
-  data->align = SEQ_TEXT_ALIGN_X_CENTER;
-  data->align_y = SEQ_TEXT_ALIGN_Y_BOTTOM;
-}
-
-void BKE_sequencer_text_font_unload(TextVars *data, const bool do_id_user)
-{
-  if (data) {
-    /* Unlink the VFont */
-    if (do_id_user && data->text_font != NULL) {
-      id_us_min(&data->text_font->id);
-      data->text_font = NULL;
-    }
-
-    /* Unload the BLF font. */
-    if (data->text_blf_id >= 0) {
-      BLF_unload_id(data->text_blf_id);
-    }
-  }
-}
-
-void BKE_sequencer_text_font_load(TextVars *data, const bool do_id_user)
-{
-  if (data->text_font != NULL) {
-    if (do_id_user) {
-      id_us_plus(&data->text_font->id);
-    }
-
-    char path[FILE_MAX];
-    STRNCPY(path, data->text_font->filepath);
-    BLI_assert(BLI_thread_is_main());
-    BLI_path_abs(path, ID_BLEND_PATH_FROM_GLOBAL(&data->text_font->id));
-
-    data->text_blf_id = BLF_load(path);
-  }
-}
-
-static void free_text_effect(Sequence *seq, const bool do_id_user)
-{
-  TextVars *data = seq->effectdata;
-  BKE_sequencer_text_font_unload(data, do_id_user);
-
-  if (data) {
-    MEM_freeN(data);
-    seq->effectdata = NULL;
-  }
-}
-
-static void load_text_effect(Sequence *seq)
-{
-  TextVars *data = seq->effectdata;
-  BKE_sequencer_text_font_load(data, false);
-}
-
-static void copy_text_effect(Sequence *dst, Sequence *src, const int flag)
-{
-  dst->effectdata = MEM_dupallocN(src->effectdata);
-  TextVars *data = dst->effectdata;
-
-  data->text_blf_id = -1;
-  BKE_sequencer_text_font_load(data, (flag & LIB_ID_CREATE_NO_USER_REFCOUNT) == 0);
-}
-
-static int num_inputs_text(void)
-{
-  return 0;
-}
-
-static int early_out_text(Sequence *seq, float UNUSED(facf0), float UNUSED(facf1))
-{
-  TextVars *data = seq->effectdata;
-  if (data->text[0] == 0 || data->text_size < 1 ||
-      ((data->color[3] == 0.0f) &&
-       (data->shadow_color[3] == 0.0f || (data->flag & SEQ_TEXT_SHADOW) == 0))) {
-    return EARLY_USE_INPUT_1;
-  }
-  return EARLY_NO_INPUT;
-}
-
-static ImBuf *do_text_effect(const SeqRenderData *context,
-                             Sequence *seq,
-                             float UNUSED(cfra),
-                             float UNUSED(facf0),
-                             float UNUSED(facf1),
-                             ImBuf *ibuf1,
-                             ImBuf *ibuf2,
-                             ImBuf *ibuf3)
-{
-  ImBuf *out = prepare_effect_imbufs(context, ibuf1, ibuf2, ibuf3);
-  TextVars *data = seq->effectdata;
-  int width = out->x;
-  int height = out->y;
-  struct ColorManagedDisplay *display;
-  const char *display_device;
-  int font = blf_mono_font_render;
-  int line_height;
-  int y_ofs, x, y;
-  double proxy_size_comp;
-
-  if (data->text_blf_id == SEQ_FONT_NOT_LOADED) {
-    data->text_blf_id = -1;
-
-    if (data->text_font) {
-      data->text_blf_id = BLF_load(data->text_font->filepath);
-    }
-  }
-
-  if (data->text_blf_id >= 0) {
-    font = data->text_blf_id;
-  }
-
-  display_device = context->scene->display_settings.display_device;
-  display = IMB_colormanagement_display_get_named(display_device);
-
-  /* Compensate text size for preview render size. */
-  proxy_size_comp = context->scene->r.size / 100.0;
-  if (context->preview_render_size != SEQ_RENDER_SIZE_SCENE) {
-    proxy_size_comp *= BKE_sequencer_rendersize_to_scale_factor(context->preview_render_size);
-  }
-
-  /* set before return */
-  BLF_size(font, proxy_size_comp * data->text_size, 72);
-
-  BLF_enable(font, BLF_WORD_WRAP);
-
-  /* use max width to enable newlines only */
-  BLF_wordwrap(font, (data->wrap_width != 0.0f) ? data->wrap_width * width : -1);
-
-  BLF_buffer(
-      font, out->rect_float, (unsigned char *)out->rect, width, height, out->channels, display);
-
-  line_height = BLF_height_max(font);
-
-  y_ofs = -BLF_descender(font);
-
-  x = (data->loc[0] * width);
-  y = (data->loc[1] * height) + y_ofs;
-
-  if ((data->align == SEQ_TEXT_ALIGN_X_LEFT) && (data->align_y == SEQ_TEXT_ALIGN_Y_TOP)) {
-    y -= line_height;
-  }
-  else {
-    /* vars for calculating wordwrap */
-    struct {
-      struct ResultBLF info;
-      rctf rect;
-    } wrap;
-
-    BLF_boundbox_ex(font, data->text, sizeof(data->text), &wrap.rect, &wrap.info);
-
-    if (data->align == SEQ_TEXT_ALIGN_X_RIGHT) {
-      x -= BLI_rctf_size_x(&wrap.rect);
-    }
-    else if (data->align == SEQ_TEXT_ALIGN_X_CENTER) {
-      x -= BLI_rctf_size_x(&wrap.rect) / 2;
-    }
-
-    if (data->align_y == SEQ_TEXT_ALIGN_Y_TOP) {
-      y -= line_height;
-    }
-    else if (data->align_y == SEQ_TEXT_ALIGN_Y_BOTTOM) {
-      y += (wrap.info.lines - 1) * line_height;
-    }
-    else if (data->align_y == SEQ_TEXT_ALIGN_Y_CENTER) {
-      y += (((wrap.info.lines - 1) / 2) * line_height) - (line_height / 2);
-    }
-  }
-
-  /* BLF_SHADOW won't work with buffers, instead use cheap shadow trick */
-  if (data->flag & SEQ_TEXT_SHADOW) {
-    int fontx, fonty;
-    fontx = BLF_width_max(font);
-    fonty = line_height;
-    BLF_position(font, x + max_ii(fontx / 25, 1), y + max_ii(fonty / 25, 1), 0.0f);
-    BLF_buffer_col(font, data->shadow_color);
-    BLF_draw_buffer(font, data->text, BLF_DRAW_STR_DUMMY_MAX);
-  }
-
-  BLF_position(font, x, y, 0.0f);
-  BLF_buffer_col(font, data->color);
-  BLF_draw_buffer(font, data->text, BLF_DRAW_STR_DUMMY_MAX);
-
-  BLF_buffer(font, NULL, NULL, 0, 0, 0, NULL);
-
-  BLF_disable(font, BLF_WORD_WRAP);
-
-  return out;
-}
-
-/*********************** sequence effect factory *************************/
-
-static void init_noop(Sequence *UNUSED(seq))
-{
-}
-
-static void load_noop(Sequence *UNUSED(seq))
-{
-}
-
-static void free_noop(Sequence *UNUSED(seq), const bool UNUSED(do_id_user))
-{
-}
-
-static int num_inputs_default(void)
-{
-  return 2;
-}
-
-static void copy_effect_default(Sequence *dst, Sequence *src, const int UNUSED(flag))
-{
-  dst->effectdata = MEM_dupallocN(src->effectdata);
-}
-
-static void free_effect_default(Sequence *seq, const bool UNUSED(do_id_user))
-{
-  if (seq->effectdata) {
-    MEM_freeN(seq->effectdata);
-  }
-
-  seq->effectdata = NULL;
-}
-
-static int early_out_noop(Sequence *UNUSED(seq), float UNUSED(facf0), float UNUSED(facf1))
-{
-  return EARLY_DO_EFFECT;
-}
-
-static int early_out_fade(Sequence *UNUSED(seq), float facf0, float facf1)
-{
-  if (facf0 == 0.0f && facf1 == 0.0f) {
-    return EARLY_USE_INPUT_1;
-  }
-  if (facf0 == 1.0f && facf1 == 1.0f) {
-    return EARLY_USE_INPUT_2;
-  }
-  return EARLY_DO_EFFECT;
-}
-
-static int early_out_mul_input2(Sequence *UNUSED(seq), float facf0, float facf1)
-{
-  if (facf0 == 0.0f && facf1 == 0.0f) {
-    return EARLY_USE_INPUT_1;
-  }
-  return EARLY_DO_EFFECT;
-}
-
-static void store_icu_yrange_noop(Sequence *UNUSED(seq),
-                                  short UNUSED(adrcode),
-                                  float *UNUSED(ymin),
-                                  float *UNUSED(ymax))
-{
-  /* defaults are fine */
-}
-
-static void get_default_fac_noop(Sequence *UNUSED(seq),
-                                 float UNUSED(cfra),
-                                 float *facf0,
-                                 float *facf1)
-{
-  *facf0 = *facf1 = 1.0;
-}
-
-static void get_default_fac_fade(Sequence *seq, float cfra, float *facf0, float *facf1)
-{
-  *facf0 = (float)(cfra - seq->startdisp);
-  *facf1 = (float)(*facf0 + 0.5f);
-  *facf0 /= seq->len;
-  *facf1 /= seq->len;
-}
-
-static struct ImBuf *init_execution(const SeqRenderData *context,
-                                    ImBuf *ibuf1,
-                                    ImBuf *ibuf2,
-                                    ImBuf *ibuf3)
-{
-  ImBuf *out = prepare_effect_imbufs(context, ibuf1, ibuf2, ibuf3);
-
-  return out;
-}
-
-static struct SeqEffectHandle get_sequence_effect_impl(int seq_type)
-{
-  struct SeqEffectHandle rval;
-  int sequence_type = seq_type;
-
-  rval.multithreaded = false;
-  rval.supports_mask = false;
-  rval.init = init_noop;
-  rval.num_inputs = num_inputs_default;
-  rval.load = load_noop;
-  rval.free = free_noop;
-  rval.early_out = early_out_noop;
-  rval.get_default_fac = get_default_fac_noop;
-  rval.store_icu_yrange = store_icu_yrange_noop;
-  rval.execute = NULL;
-  rval.init_execution = init_execution;
-  rval.execute_slice = NULL;
-  rval.copy = NULL;
-
-  switch (sequence_type) {
-    case SEQ_TYPE_CROSS:
-      rval.multithreaded = true;
-      rval.execute_slice = do_cross_effect;
-      rval.early_out = early_out_fade;
-      rval.get_default_fac = get_default_fac_fade;
-      break;
-    case SEQ_TYPE_GAMCROSS:
-      rval.multithreaded = true;
-      rval.init = init_gammacross;
-      rval.load = load_gammacross;
-      rval.free = free_gammacross;
-      rval.early_out = early_out_fade;
-      rval.get_default_fac = get_default_fac_fade;
-      rval.init_execution = gammacross_init_execution;
-      rval.execute_slice = do_gammacross_effect;
-      break;
-    case SEQ_TYPE_ADD:
-      rval.multithreaded = true;
-      rval.execute_slice = do_add_effect;
-      rval.early_out = early_out_mul_input2;
-      break;
-    case SEQ_TYPE_SUB:
-      rval.multithreaded = true;
-      rval.execute_slice = do_sub_effect;
-      rval.early_out = early_out_mul_input2;
-      break;
-    case SEQ_TYPE_MUL:
-      rval.multithreaded = true;
-      rval.execute_slice = do_mul_effect;
-      rval.early_out = early_out_mul_input2;
-      break;
-    case SEQ_TYPE_SCREEN:
-    case SEQ_TYPE_OVERLAY:
-    case SEQ_TYPE_COLOR_BURN:
-    case SEQ_TYPE_LINEAR_BURN:
-    case SEQ_TYPE_DARKEN:
-    case SEQ_TYPE_LIGHTEN:
-    case SEQ_TYPE_DODGE:
-    case SEQ_TYPE_SOFT_LIGHT:
-    case SEQ_TYPE_HARD_LIGHT:
-    case SEQ_TYPE_PIN_LIGHT:
-    case SEQ_TYPE_LIN_LIGHT:
-    case SEQ_TYPE_VIVID_LIGHT:
-    case SEQ_TYPE_BLEND_COLOR:
-    case SEQ_TYPE_HUE:
-    case SEQ_TYPE_SATURATION:
-    case SEQ_TYPE_VALUE:
-    case SEQ_TYPE_DIFFERENCE:
-    case SEQ_TYPE_EXCLUSION:
-      rval.multithreaded = true;
-      rval.execute_slice = do_blend_mode_effect;
-      rval.early_out = early_out_mul_input2;
-      break;
-    case SEQ_TYPE_COLORMIX:
-      rval.multithreaded = true;
-      rval.init = init_colormix_effect;
-      rval.free = free_effect_default;
-      rval.copy = copy_effect_default;
-      rval.execute_slice = do_colormix_effect;
-      rval.early_out = early_out_mul_input2;
-      break;
-    case SEQ_TYPE_ALPHAOVER:
-      rval.multithreaded = true;
-      rval.init = init_alpha_over_or_under;
-      rval.execute_slice = do_alphaover_effect;
-      break;
-    case SEQ_TYPE_OVERDROP:
-      rval.multithreaded = true;
-      rval.execute_slice = do_overdrop_effect;
-      break;
-    case SEQ_TYPE_ALPHAUNDER:
-      rval.multithreaded = true;
-      rval.init = init_alpha_over_or_under;
-      rval.execute_slice = do_alphaunder_effect;
-      break;
-    case SEQ_TYPE_WIPE:
-      rval.init = init_wipe_effect;
-      rval.num_inputs = num_inputs_wipe;
-      rval.free = free_wipe_effect;
-      rval.copy = copy_wipe_effect;
-      rval.early_out = early_out_fade;
-      rval.get_default_fac = get_default_fac_fade;
-      rval.execute = do_wipe_effect;
-      break;
-    case SEQ_TYPE_GLOW:
-      rval.init = init_glow_effect;
-      rval.num_inputs = num_inputs_glow;
-      rval.free = free_glow_effect;
-      rval.copy = copy_glow_effect;
-      rval.execute = do_glow_effect;
-      break;
-    case SEQ_TYPE_TRANSFORM:
-      rval.multithreaded = true;
-      rval.init = init_transform_effect;
-      rval.num_inputs = num_inputs_transform;
-      rval.free = free_transform_effect;
-      rval.copy = copy_transform_effect;
-      rval.execute_slice = do_transform_effect;
-      break;
-    case SEQ_TYPE_SPEED:
-      rval.init = init_speed_effect;
-      rval.num_inputs = num_inputs_speed;
-      rval.load = load_speed_effect;
-      rval.free = free_speed_effect;
-      rval.copy = copy_speed_effect;
-      rval.execute = do_speed_effect;
-      rval.early_out = early_out_speed;
-      rval.store_icu_yrange = store_icu_yrange_speed;
-      break;
-    case SEQ_TYPE_COLOR:
-      rval.init = init_solid_color;
-      rval.num_inputs = num_inputs_color;
-      rval.early_out = early_out_color;
-      rval.free = free_solid_color;
-      rval.copy = copy_solid_color;
-      rval.execute = do_solid_color;
-      break;
-    case SEQ_TYPE_MULTICAM:
-      rval.num_inputs = num_inputs_multicam;
-      rval.early_out = early_out_multicam;
-      rval.execute = do_multicam;
-      break;
-    case SEQ_TYPE_ADJUSTMENT:
-      rval.supports_mask = true;
-      rval.num_inputs = num_inputs_adjustment;
-      rval.early_out = early_out_adjustment;
-      rval.execute = do_adjustment;
-      break;
-    case SEQ_TYPE_GAUSSIAN_BLUR:
-      rval.init = init_gaussian_blur_effect;
-      rval.num_inputs = num_inputs_gaussian_blur;
-      rval.free = free_gaussian_blur_effect;
-      rval.copy = copy_gaussian_blur_effect;
-      rval.early_out = early_out_gaussian_blur;
-      rval.execute = do_gaussian_blur_effect;
-      break;
-    case SEQ_TYPE_TEXT:
-      rval.num_inputs = num_inputs_text;
-      rval.init = init_text_effect;
-      rval.free = free_text_effect;
-      rval.load = load_text_effect;
-      rval.copy = copy_text_effect;
-      rval.early_out = early_out_text;
-      rval.execute = do_text_effect;
-      break;
-  }
-
-  return rval;
-}
-
-struct SeqEffectHandle BKE_sequence_get_effect(Sequence *seq)
-{
-  struct SeqEffectHandle rval = {false, false, NULL};
-
-  if (seq->type & SEQ_TYPE_EFFECT) {
-    rval = get_sequence_effect_impl(seq->type);
-    if ((seq->flag & SEQ_EFFECT_NOT_LOADED) != 0) {
-      rval.load(seq);
-      seq->flag &= ~SEQ_EFFECT_NOT_LOADED;
-    }
-  }
-
-  return rval;
-}
-
-struct SeqEffectHandle BKE_sequence_get_blend(Sequence *seq)
-{
-  struct SeqEffectHandle rval = {false, false, NULL};
-
-  if (seq->blend_mode != 0) {
-    if ((seq->flag & SEQ_EFFECT_NOT_LOADED) != 0) {
-      /* load the effect first */
-      rval = get_sequence_effect_impl(seq->type);
-      rval.load(seq);
-    }
-
-    rval = get_sequence_effect_impl(seq->blend_mode);
-    if ((seq->flag & SEQ_EFFECT_NOT_LOADED) != 0) {
-      /* now load the blend and unset unloaded flag */
-      rval.load(seq);
-      seq->flag &= ~SEQ_EFFECT_NOT_LOADED;
-    }
-  }
-
-  return rval;
-}
-
-int BKE_sequence_effect_get_num_inputs(int seq_type)
-{
-  struct SeqEffectHandle rval = get_sequence_effect_impl(seq_type);
-
-  int cnt = rval.num_inputs();
-  if (rval.execute || (rval.execute_slice && rval.init_execution)) {
-    return cnt;
-  }
-  return 0;
-}
-
-int BKE_sequence_effect_get_supports_mask(int seq_type)
-{
-  struct SeqEffectHandle rval = get_sequence_effect_impl(seq_type);
-
-  return rval.supports_mask;
-}
diff --git a/source/blender/blenkernel/intern/seqmodifier.c b/source/blender/blenkernel/intern/seqmodifier.c
deleted file mode 100644
index a38fe252731..00000000000
--- a/source/blender/blenkernel/intern/seqmodifier.c
+++ /dev/null
@@ -1,1130 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2012 Blender Foundation.
- * All rights reserved.
- */
-
-/** \file
- * \ingroup bke
- */
-
-#include <stddef.h>
-#include <string.h>
-
-#include "MEM_guardedalloc.h"
-
-#include "BLI_listbase.h"
-#include "BLI_math.h"
-#include "BLI_string.h"
-#include "BLI_string_utils.h"
-#include "BLI_utildefines.h"
-
-#include "BLT_translation.h"
-
-#include "DNA_mask_types.h"
-#include "DNA_scene_types.h"
-#include "DNA_sequence_types.h"
-
-#include "BKE_colortools.h"
-#include "BKE_sequencer.h"
-
-#include "IMB_colormanagement.h"
-#include "IMB_imbuf.h"
-#include "IMB_imbuf_types.h"
-
-static SequenceModifierTypeInfo *modifiersTypes[NUM_SEQUENCE_MODIFIER_TYPES];
-static bool modifierTypesInit = false;
-
-/* -------------------------------------------------------------------- */
-/** \name Modifier Multi-Threading Utilities
- * \{ */
-
-typedef void (*modifier_apply_threaded_cb)(int width,
-                                           int height,
-                                           unsigned char *rect,
-                                           float *rect_float,
-                                           unsigned char *mask_rect,
-                                           const float *mask_rect_float,
-                                           void *data_v);
-
-typedef struct ModifierInitData {
-  ImBuf *ibuf;
-  ImBuf *mask;
-  void *user_data;
-
-  modifier_apply_threaded_cb apply_callback;
-} ModifierInitData;
-
-typedef struct ModifierThread {
-  int width, height;
-
-  unsigned char *rect, *mask_rect;
-  float *rect_float, *mask_rect_float;
-
-  void *user_data;
-
-  modifier_apply_threaded_cb apply_callback;
-} ModifierThread;
-
-static ImBuf *modifier_mask_get(SequenceModifierData *smd,
-                                const SeqRenderData *context,
-                                int cfra,
-                                int fra_offset,
-                                bool make_float)
-{
-  return BKE_sequencer_render_mask_input(context,
-                                         smd->mask_input_type,
-                                         smd->mask_sequence,
-                                         smd->mask_id,
-                                         cfra,
-                                         fra_offset,
-                                         make_float);
-}
-
-static void modifier_init_handle(void *handle_v, int start_line, int tot_line, void *init_data_v)
-{
-  ModifierThread *handle = (ModifierThread *)handle_v;
-  ModifierInitData *init_data = (ModifierInitData *)init_data_v;
-  ImBuf *ibuf = init_data->ibuf;
-  ImBuf *mask = init_data->mask;
-
-  int offset = 4 * start_line * ibuf->x;
-
-  memset(handle, 0, sizeof(ModifierThread));
-
-  handle->width = ibuf->x;
-  handle->height = tot_line;
-  handle->apply_callback = init_data->apply_callback;
-  handle->user_data = init_data->user_data;
-
-  if (ibuf->rect) {
-    handle->rect = (unsigned char *)ibuf->rect + offset;
-  }
-
-  if (ibuf->rect_float) {
-    handle->rect_float = ibuf->rect_float + offset;
-  }
-
-  if (mask) {
-    if (mask->rect) {
-      handle->mask_rect = (unsigned char *)mask->rect + offset;
-    }
-
-    if (mask->rect_float) {
-      handle->mask_rect_float = mask->rect_float + offset;
-    }
-  }
-  else {
-    handle->mask_rect = NULL;
-    handle->mask_rect_float = NULL;
-  }
-}
-
-static void *modifier_do_thread(void *thread_data_v)
-{
-  ModifierThread *td = (ModifierThread *)thread_data_v;
-
-  td->apply_callback(td->width,
-                     td->height,
-                     td->rect,
-                     td->rect_float,
-                     td->mask_rect,
-                     td->mask_rect_float,
-                     td->user_data);
-
-  return NULL;
-}
-
-static void modifier_apply_threaded(ImBuf *ibuf,
-                                    ImBuf *mask,
-                                    modifier_apply_threaded_cb apply_callback,
-                                    void *user_data)
-{
-  ModifierInitData init_data;
-
-  init_data.ibuf = ibuf;
-  init_data.mask = mask;
-  init_data.user_data = user_data;
-
-  init_data.apply_callback = apply_callback;
-
-  IMB_processor_apply_threaded(
-      ibuf->y, sizeof(ModifierThread), &init_data, modifier_init_handle, modifier_do_thread);
-}
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Color Balance Modifier
- * \{ */
-
-static void colorBalance_init_data(SequenceModifierData *smd)
-{
-  ColorBalanceModifierData *cbmd = (ColorBalanceModifierData *)smd;
-  int c;
-
-  cbmd->color_multiply = 1.0f;
-
-  for (c = 0; c < 3; c++) {
-    cbmd->color_balance.lift[c] = 1.0f;
-    cbmd->color_balance.gamma[c] = 1.0f;
-    cbmd->color_balance.gain[c] = 1.0f;
-  }
-}
-
-static void colorBalance_apply(SequenceModifierData *smd, ImBuf *ibuf, ImBuf *mask)
-{
-  ColorBalanceModifierData *cbmd = (ColorBalanceModifierData *)smd;
-
-  BKE_sequencer_color_balance_apply(&cbmd->color_balance, ibuf, cbmd->color_multiply, false, mask);
-}
-
-static SequenceModifierTypeInfo seqModifier_ColorBalance = {
-    CTX_N_(BLT_I18NCONTEXT_ID_SEQUENCE, "Color Balance"), /* name */
-    "ColorBalanceModifierData",                           /* struct_name */
-    sizeof(ColorBalanceModifierData),                     /* struct_size */
-    colorBalance_init_data,                               /* init_data */
-    NULL,                                                 /* free_data */
-    NULL,                                                 /* copy_data */
-    colorBalance_apply,                                   /* apply */
-};
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name White Balance Modifier
- * \{ */
-
-static void whiteBalance_init_data(SequenceModifierData *smd)
-{
-  WhiteBalanceModifierData *cbmd = (WhiteBalanceModifierData *)smd;
-  copy_v3_fl(cbmd->white_value, 1.0f);
-}
-
-typedef struct WhiteBalanceThreadData {
-  float white[3];
-} WhiteBalanceThreadData;
-
-static void whiteBalance_apply_threaded(int width,
-                                        int height,
-                                        unsigned char *rect,
-                                        float *rect_float,
-                                        unsigned char *mask_rect,
-                                        const float *mask_rect_float,
-                                        void *data_v)
-{
-  int x, y;
-  float multiplier[3];
-
-  WhiteBalanceThreadData *data = (WhiteBalanceThreadData *)data_v;
-
-  multiplier[0] = (data->white[0] != 0.0f) ? 1.0f / data->white[0] : FLT_MAX;
-  multiplier[1] = (data->white[1] != 0.0f) ? 1.0f / data->white[1] : FLT_MAX;
-  multiplier[2] = (data->white[2] != 0.0f) ? 1.0f / data->white[2] : FLT_MAX;
-
-  for (y = 0; y < height; y++) {
-    for (x = 0; x < width; x++) {
-      int pixel_index = (y * width + x) * 4;
-      float rgba[4], result[4], mask[3] = {1.0f, 1.0f, 1.0f};
-
-      if (rect_float) {
-        copy_v3_v3(rgba, rect_float + pixel_index);
-      }
-      else {
-        straight_uchar_to_premul_float(rgba, rect + pixel_index);
-      }
-
-      copy_v4_v4(result, rgba);
-#if 0
-      mul_v3_v3(result, multiplier);
-#else
-      /* similar to division without the clipping */
-      for (int i = 0; i < 3; i++) {
-        result[i] = 1.0f - powf(1.0f - rgba[i], multiplier[i]);
-      }
-#endif
-
-      if (mask_rect_float) {
-        copy_v3_v3(mask, mask_rect_float + pixel_index);
-      }
-      else if (mask_rect) {
-        rgb_uchar_to_float(mask, mask_rect + pixel_index);
-      }
-
-      result[0] = rgba[0] * (1.0f - mask[0]) + result[0] * mask[0];
-      result[1] = rgba[1] * (1.0f - mask[1]) + result[1] * mask[1];
-      result[2] = rgba[2] * (1.0f - mask[2]) + result[2] * mask[2];
-
-      if (rect_float) {
-        copy_v3_v3(rect_float + pixel_index, result);
-      }
-      else {
-        premul_float_to_straight_uchar(rect + pixel_index, result);
-      }
-    }
-  }
-}
-
-static void whiteBalance_apply(SequenceModifierData *smd, ImBuf *ibuf, ImBuf *mask)
-{
-  WhiteBalanceThreadData data;
-  WhiteBalanceModifierData *wbmd = (WhiteBalanceModifierData *)smd;
-
-  copy_v3_v3(data.white, wbmd->white_value);
-
-  modifier_apply_threaded(ibuf, mask, whiteBalance_apply_threaded, &data);
-}
-
-static SequenceModifierTypeInfo seqModifier_WhiteBalance = {
-    CTX_N_(BLT_I18NCONTEXT_ID_SEQUENCE, "White Balance"), /* name */
-    "WhiteBalanceModifierData",                           /* struct_name */
-    sizeof(WhiteBalanceModifierData),                     /* struct_size */
-    whiteBalance_init_data,                               /* init_data */
-    NULL,                                                 /* free_data */
-    NULL,                                                 /* copy_data */
-    whiteBalance_apply,                                   /* apply */
-};
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Curves Modifier
- * \{ */
-
-static void curves_init_data(SequenceModifierData *smd)
-{
-  CurvesModifierData *cmd = (CurvesModifierData *)smd;
-
-  BKE_curvemapping_set_defaults(&cmd->curve_mapping, 4, 0.0f, 0.0f, 1.0f, 1.0f);
-}
-
-static void curves_free_data(SequenceModifierData *smd)
-{
-  CurvesModifierData *cmd = (CurvesModifierData *)smd;
-
-  BKE_curvemapping_free_data(&cmd->curve_mapping);
-}
-
-static void curves_copy_data(SequenceModifierData *target, SequenceModifierData *smd)
-{
-  CurvesModifierData *cmd = (CurvesModifierData *)smd;
-  CurvesModifierData *cmd_target = (CurvesModifierData *)target;
-
-  BKE_curvemapping_copy_data(&cmd_target->curve_mapping, &cmd->curve_mapping);
-}
-
-static void curves_apply_threaded(int width,
-                                  int height,
-                                  unsigned char *rect,
-                                  float *rect_float,
-                                  unsigned char *mask_rect,
-                                  const float *mask_rect_float,
-                                  void *data_v)
-{
-  CurveMapping *curve_mapping = (CurveMapping *)data_v;
-  int x, y;
-
-  for (y = 0; y < height; y++) {
-    for (x = 0; x < width; x++) {
-      int pixel_index = (y * width + x) * 4;
-
-      if (rect_float) {
-        float *pixel = rect_float + pixel_index;
-        float result[3];
-
-        BKE_curvemapping_evaluate_premulRGBF(curve_mapping, result, pixel);
-
-        if (mask_rect_float) {
-          const float *m = mask_rect_float + pixel_index;
-
-          pixel[0] = pixel[0] * (1.0f - m[0]) + result[0] * m[0];
-          pixel[1] = pixel[1] * (1.0f - m[1]) + result[1] * m[1];
-          pixel[2] = pixel[2] * (1.0f - m[2]) + result[2] * m[2];
-        }
-        else {
-          pixel[0] = result[0];
-          pixel[1] = result[1];
-          pixel[2] = result[2];
-        }
-      }
-      if (rect) {
-        unsigned char *pixel = rect + pixel_index;
-        float result[3], tempc[4];
-
-        straight_uchar_to_premul_float(tempc, pixel);
-
-        BKE_curvemapping_evaluate_premulRGBF(curve_mapping, result, tempc);
-
-        if (mask_rect) {
-          float t[3];
-
-          rgb_uchar_to_float(t, mask_rect + pixel_index);
-
-          tempc[0] = tempc[0] * (1.0f - t[0]) + result[0] * t[0];
-          tempc[1] = tempc[1] * (1.0f - t[1]) + result[1] * t[1];
-          tempc[2] = tempc[2] * (1.0f - t[2]) + result[2] * t[2];
-        }
-        else {
-          tempc[0] = result[0];
-          tempc[1] = result[1];
-          tempc[2] = result[2];
-        }
-
-        premul_float_to_straight_uchar(pixel, tempc);
-      }
-    }
-  }
-}
-
-static void curves_apply(struct SequenceModifierData *smd, ImBuf *ibuf, ImBuf *mask)
-{
-  CurvesModifierData *cmd = (CurvesModifierData *)smd;
-
-  const float black[3] = {0.0f, 0.0f, 0.0f};
-  const float white[3] = {1.0f, 1.0f, 1.0f};
-
-  BKE_curvemapping_init(&cmd->curve_mapping);
-
-  BKE_curvemapping_premultiply(&cmd->curve_mapping, 0);
-  BKE_curvemapping_set_black_white(&cmd->curve_mapping, black, white);
-
-  modifier_apply_threaded(ibuf, mask, curves_apply_threaded, &cmd->curve_mapping);
-
-  BKE_curvemapping_premultiply(&cmd->curve_mapping, 1);
-}
-
-static SequenceModifierTypeInfo seqModifier_Curves = {
-    CTX_N_(BLT_I18NCONTEXT_ID_SEQUENCE, "Curves"), /* name */
-    "CurvesModifierData",                          /* struct_name */
-    sizeof(CurvesModifierData),                    /* struct_size */
-    curves_init_data,                              /* init_data */
-    curves_free_data,                              /* free_data */
-    curves_copy_data,                              /* copy_data */
-    curves_apply,                                  /* apply */
-};
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Hue Correct Modifier
- * \{ */
-
-static void hue_correct_init_data(SequenceModifierData *smd)
-{
-  HueCorrectModifierData *hcmd = (HueCorrectModifierData *)smd;
-  int c;
-
-  BKE_curvemapping_set_defaults(&hcmd->curve_mapping, 1, 0.0f, 0.0f, 1.0f, 1.0f);
-  hcmd->curve_mapping.preset = CURVE_PRESET_MID9;
-
-  for (c = 0; c < 3; c++) {
-    CurveMap *cuma = &hcmd->curve_mapping.cm[c];
-
-    BKE_curvemap_reset(
-        cuma, &hcmd->curve_mapping.clipr, hcmd->curve_mapping.preset, CURVEMAP_SLOPE_POSITIVE);
-  }
-
-  /* default to showing Saturation */
-  hcmd->curve_mapping.cur = 1;
-}
-
-static void hue_correct_free_data(SequenceModifierData *smd)
-{
-  HueCorrectModifierData *hcmd = (HueCorrectModifierData *)smd;
-
-  BKE_curvemapping_free_data(&hcmd->curve_mapping);
-}
-
-static void hue_correct_copy_data(SequenceModifierData *target, SequenceModifierData *smd)
-{
-  HueCorrectModifierData *hcmd = (HueCorrectModifierData *)smd;
-  HueCorrectModifierData *hcmd_target = (HueCorrectModifierData *)target;
-
-  BKE_curvemapping_copy_data(&hcmd_target->curve_mapping, &hcmd->curve_mapping);
-}
-
-static void hue_correct_apply_threaded(int width,
-                                       int height,
-                                       unsigned char *rect,
-                                       float *rect_float,
-                                       unsigned char *mask_rect,
-                                       const float *mask_rect_float,
-                                       void *data_v)
-{
-  CurveMapping *curve_mapping = (CurveMapping *)data_v;
-  int x, y;
-
-  for (y = 0; y < height; y++) {
-    for (x = 0; x < width; x++) {
-      int pixel_index = (y * width + x) * 4;
-      float pixel[3], result[3], mask[3] = {1.0f, 1.0f, 1.0f};
-      float hsv[3], f;
-
-      if (rect_float) {
-        copy_v3_v3(pixel, rect_float + pixel_index);
-      }
-      else {
-        rgb_uchar_to_float(pixel, rect + pixel_index);
-      }
-
-      rgb_to_hsv(pixel[0], pixel[1], pixel[2], hsv, hsv + 1, hsv + 2);
-
-      /* adjust hue, scaling returned default 0.5 up to 1 */
-      f = BKE_curvemapping_evaluateF(curve_mapping, 0, hsv[0]);
-      hsv[0] += f - 0.5f;
-
-      /* adjust saturation, scaling returned default 0.5 up to 1 */
-      f = BKE_curvemapping_evaluateF(curve_mapping, 1, hsv[0]);
-      hsv[1] *= (f * 2.0f);
-
-      /* adjust value, scaling returned default 0.5 up to 1 */
-      f = BKE_curvemapping_evaluateF(curve_mapping, 2, hsv[0]);
-      hsv[2] *= (f * 2.f);
-
-      hsv[0] = hsv[0] - floorf(hsv[0]); /* mod 1.0 */
-      CLAMP(hsv[1], 0.0f, 1.0f);
-
-      /* convert back to rgb */
-      hsv_to_rgb(hsv[0], hsv[1], hsv[2], result, result + 1, result + 2);
-
-      if (mask_rect_float) {
-        copy_v3_v3(mask, mask_rect_float + pixel_index);
-      }
-      else if (mask_rect) {
-        rgb_uchar_to_float(mask, mask_rect + pixel_index);
-      }
-
-      result[0] = pixel[0] * (1.0f - mask[0]) + result[0] * mask[0];
-      result[1] = pixel[1] * (1.0f - mask[1]) + result[1] * mask[1];
-      result[2] = pixel[2] * (1.0f - mask[2]) + result[2] * mask[2];
-
-      if (rect_float) {
-        copy_v3_v3(rect_float + pixel_index, result);
-      }
-      else {
-        rgb_float_to_uchar(rect + pixel_index, result);
-      }
-    }
-  }
-}
-
-static void hue_correct_apply(struct SequenceModifierData *smd, ImBuf *ibuf, ImBuf *mask)
-{
-  HueCorrectModifierData *hcmd = (HueCorrectModifierData *)smd;
-
-  BKE_curvemapping_init(&hcmd->curve_mapping);
-
-  modifier_apply_threaded(ibuf, mask, hue_correct_apply_threaded, &hcmd->curve_mapping);
-}
-
-static SequenceModifierTypeInfo seqModifier_HueCorrect = {
-    CTX_N_(BLT_I18NCONTEXT_ID_SEQUENCE, "Hue Correct"), /* name */
-    "HueCorrectModifierData",                           /* struct_name */
-    sizeof(HueCorrectModifierData),                     /* struct_size */
-    hue_correct_init_data,                              /* init_data */
-    hue_correct_free_data,                              /* free_data */
-    hue_correct_copy_data,                              /* copy_data */
-    hue_correct_apply,                                  /* apply */
-};
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Bright/Contrast Modifier
- * \{ */
-
-typedef struct BrightContrastThreadData {
-  float bright;
-  float contrast;
-} BrightContrastThreadData;
-
-static void brightcontrast_apply_threaded(int width,
-                                          int height,
-                                          unsigned char *rect,
-                                          float *rect_float,
-                                          unsigned char *mask_rect,
-                                          const float *mask_rect_float,
-                                          void *data_v)
-{
-  BrightContrastThreadData *data = (BrightContrastThreadData *)data_v;
-  int x, y;
-
-  float i;
-  int c;
-  float a, b, v;
-  float brightness = data->bright / 100.0f;
-  float contrast = data->contrast;
-  float delta = contrast / 200.0f;
-  /*
-   * The algorithm is by Werner D. Streidt
-   * (http://visca.com/ffactory/archives/5-99/msg00021.html)
-   * Extracted of OpenCV demhist.c
-   */
-  if (contrast > 0) {
-    a = 1.0f - delta * 2.0f;
-    a = 1.0f / max_ff(a, FLT_EPSILON);
-    b = a * (brightness - delta);
-  }
-  else {
-    delta *= -1;
-    a = max_ff(1.0f - delta * 2.0f, 0.0f);
-    b = a * brightness + delta;
-  }
-
-  for (y = 0; y < height; y++) {
-    for (x = 0; x < width; x++) {
-      int pixel_index = (y * width + x) * 4;
-
-      if (rect) {
-        unsigned char *pixel = rect + pixel_index;
-
-        for (c = 0; c < 3; c++) {
-          i = (float)pixel[c] / 255.0f;
-          v = a * i + b;
-
-          if (mask_rect) {
-            unsigned char *m = mask_rect + pixel_index;
-            float t = (float)m[c] / 255.0f;
-
-            v = (float)pixel[c] / 255.0f * (1.0f - t) + v * t;
-          }
-
-          pixel[c] = unit_float_to_uchar_clamp(v);
-        }
-      }
-      else if (rect_float) {
-        float *pixel = rect_float + pixel_index;
-
-        for (c = 0; c < 3; c++) {
-          i = pixel[c];
-          v = a * i + b;
-
-          if (mask_rect_float) {
-            const float *m = mask_rect_float + pixel_index;
-
-            pixel[c] = pixel[c] * (1.0f - m[c]) + v * m[c];
-          }
-          else {
-            pixel[c] = v;
-          }
-        }
-      }
-    }
-  }
-}
-
-static void brightcontrast_apply(struct SequenceModifierData *smd, ImBuf *ibuf, ImBuf *mask)
-{
-  BrightContrastModifierData *bcmd = (BrightContrastModifierData *)smd;
-  BrightContrastThreadData data;
-
-  data.bright = bcmd->bright;
-  data.contrast = bcmd->contrast;
-
-  modifier_apply_threaded(ibuf, mask, brightcontrast_apply_threaded, &data);
-}
-
-static SequenceModifierTypeInfo seqModifier_BrightContrast = {
-    CTX_N_(BLT_I18NCONTEXT_ID_SEQUENCE, "Bright/Contrast"), /* name */
-    "BrightContrastModifierData",                           /* struct_name */
-    sizeof(BrightContrastModifierData),                     /* struct_size */
-    NULL,                                                   /* init_data */
-    NULL,                                                   /* free_data */
-    NULL,                                                   /* copy_data */
-    brightcontrast_apply,                                   /* apply */
-};
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Mask Modifier
- * \{ */
-
-static void maskmodifier_apply_threaded(int width,
-                                        int height,
-                                        unsigned char *rect,
-                                        float *rect_float,
-                                        unsigned char *mask_rect,
-                                        const float *mask_rect_float,
-                                        void *UNUSED(data_v))
-{
-  int x, y;
-
-  if (rect && !mask_rect) {
-    return;
-  }
-
-  if (rect_float && !mask_rect_float) {
-    return;
-  }
-
-  for (y = 0; y < height; y++) {
-    for (x = 0; x < width; x++) {
-      int pixel_index = (y * width + x) * 4;
-
-      if (rect) {
-        unsigned char *pixel = rect + pixel_index;
-        unsigned char *mask_pixel = mask_rect + pixel_index;
-        unsigned char mask = min_iii(mask_pixel[0], mask_pixel[1], mask_pixel[2]);
-
-        /* byte buffer is straight, so only affect on alpha itself,
-         * this is the only way to alpha-over byte strip after
-         * applying mask modifier.
-         */
-        pixel[3] = (float)(pixel[3] * mask) / 255.0f;
-      }
-      else if (rect_float) {
-        int c;
-        float *pixel = rect_float + pixel_index;
-        const float *mask_pixel = mask_rect_float + pixel_index;
-        float mask = min_fff(mask_pixel[0], mask_pixel[1], mask_pixel[2]);
-
-        /* float buffers are premultiplied, so need to premul color
-         * as well to make it easy to alpha-over masted strip.
-         */
-        for (c = 0; c < 4; c++) {
-          pixel[c] = pixel[c] * mask;
-        }
-      }
-    }
-  }
-}
-
-static void maskmodifier_apply(struct SequenceModifierData *UNUSED(smd), ImBuf *ibuf, ImBuf *mask)
-{
-  // SequencerMaskModifierData *bcmd = (SequencerMaskModifierData *)smd;
-
-  modifier_apply_threaded(ibuf, mask, maskmodifier_apply_threaded, NULL);
-}
-
-static SequenceModifierTypeInfo seqModifier_Mask = {
-    CTX_N_(BLT_I18NCONTEXT_ID_SEQUENCE, "Mask"), /* name */
-    "SequencerMaskModifierData",                 /* struct_name */
-    sizeof(SequencerMaskModifierData),           /* struct_size */
-    NULL,                                        /* init_data */
-    NULL,                                        /* free_data */
-    NULL,                                        /* copy_data */
-    maskmodifier_apply,                          /* apply */
-};
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Tonemap Modifier
- * \{ */
-
-typedef struct AvgLogLum {
-  SequencerTonemapModifierData *tmmd;
-  struct ColorSpace *colorspace;
-  float al;
-  float auto_key;
-  float lav;
-  float cav[4];
-  float igm;
-} AvgLogLum;
-
-static void tonemapmodifier_init_data(SequenceModifierData *smd)
-{
-  SequencerTonemapModifierData *tmmd = (SequencerTonemapModifierData *)smd;
-  /* Same as tonemap compositor node. */
-  tmmd->type = SEQ_TONEMAP_RD_PHOTORECEPTOR;
-  tmmd->key = 0.18f;
-  tmmd->offset = 1.0f;
-  tmmd->gamma = 1.0f;
-  tmmd->intensity = 0.0f;
-  tmmd->contrast = 0.0f;
-  tmmd->adaptation = 1.0f;
-  tmmd->correction = 0.0f;
-}
-
-static void tonemapmodifier_apply_threaded_simple(int width,
-                                                  int height,
-                                                  unsigned char *rect,
-                                                  float *rect_float,
-                                                  unsigned char *mask_rect,
-                                                  const float *mask_rect_float,
-                                                  void *data_v)
-{
-  AvgLogLum *avg = (AvgLogLum *)data_v;
-  for (int y = 0; y < height; y++) {
-    for (int x = 0; x < width; x++) {
-      int pixel_index = (y * width + x) * 4;
-      float input[4], output[4], mask[3] = {1.0f, 1.0f, 1.0f};
-      /* Get input value. */
-      if (rect_float) {
-        copy_v4_v4(input, &rect_float[pixel_index]);
-      }
-      else {
-        straight_uchar_to_premul_float(input, &rect[pixel_index]);
-      }
-      IMB_colormanagement_colorspace_to_scene_linear_v3(input, avg->colorspace);
-      copy_v4_v4(output, input);
-      /* Get mask value. */
-      if (mask_rect_float) {
-        copy_v3_v3(mask, mask_rect_float + pixel_index);
-      }
-      else if (mask_rect) {
-        rgb_uchar_to_float(mask, mask_rect + pixel_index);
-      }
-      /* Apply correction. */
-      mul_v3_fl(output, avg->al);
-      float dr = output[0] + avg->tmmd->offset;
-      float dg = output[1] + avg->tmmd->offset;
-      float db = output[2] + avg->tmmd->offset;
-      output[0] /= ((dr == 0.0f) ? 1.0f : dr);
-      output[1] /= ((dg == 0.0f) ? 1.0f : dg);
-      output[2] /= ((db == 0.0f) ? 1.0f : db);
-      const float igm = avg->igm;
-      if (igm != 0.0f) {
-        output[0] = powf(max_ff(output[0], 0.0f), igm);
-        output[1] = powf(max_ff(output[1], 0.0f), igm);
-        output[2] = powf(max_ff(output[2], 0.0f), igm);
-      }
-      /* Apply mask. */
-      output[0] = input[0] * (1.0f - mask[0]) + output[0] * mask[0];
-      output[1] = input[1] * (1.0f - mask[1]) + output[1] * mask[1];
-      output[2] = input[2] * (1.0f - mask[2]) + output[2] * mask[2];
-      /* Copy result back. */
-      IMB_colormanagement_scene_linear_to_colorspace_v3(output, avg->colorspace);
-      if (rect_float) {
-        copy_v4_v4(&rect_float[pixel_index], output);
-      }
-      else {
-        premul_float_to_straight_uchar(&rect[pixel_index], output);
-      }
-    }
-  }
-}
-
-static void tonemapmodifier_apply_threaded_photoreceptor(int width,
-                                                         int height,
-                                                         unsigned char *rect,
-                                                         float *rect_float,
-                                                         unsigned char *mask_rect,
-                                                         const float *mask_rect_float,
-                                                         void *data_v)
-{
-  AvgLogLum *avg = (AvgLogLum *)data_v;
-  const float f = expf(-avg->tmmd->intensity);
-  const float m = (avg->tmmd->contrast > 0.0f) ? avg->tmmd->contrast :
-                                                 (0.3f + 0.7f * powf(avg->auto_key, 1.4f));
-  const float ic = 1.0f - avg->tmmd->correction, ia = 1.0f - avg->tmmd->adaptation;
-  for (int y = 0; y < height; y++) {
-    for (int x = 0; x < width; x++) {
-      int pixel_index = (y * width + x) * 4;
-      float input[4], output[4], mask[3] = {1.0f, 1.0f, 1.0f};
-      /* Get input value. */
-      if (rect_float) {
-        copy_v4_v4(input, &rect_float[pixel_index]);
-      }
-      else {
-        straight_uchar_to_premul_float(input, &rect[pixel_index]);
-      }
-      IMB_colormanagement_colorspace_to_scene_linear_v3(input, avg->colorspace);
-      copy_v4_v4(output, input);
-      /* Get mask value. */
-      if (mask_rect_float) {
-        copy_v3_v3(mask, mask_rect_float + pixel_index);
-      }
-      else if (mask_rect) {
-        rgb_uchar_to_float(mask, mask_rect + pixel_index);
-      }
-      /* Apply correction. */
-      const float L = IMB_colormanagement_get_luminance(output);
-      float I_l = output[0] + ic * (L - output[0]);
-      float I_g = avg->cav[0] + ic * (avg->lav - avg->cav[0]);
-      float I_a = I_l + ia * (I_g - I_l);
-      output[0] /= (output[0] + powf(f * I_a, m));
-      I_l = output[1] + ic * (L - output[1]);
-      I_g = avg->cav[1] + ic * (avg->lav - avg->cav[1]);
-      I_a = I_l + ia * (I_g - I_l);
-      output[1] /= (output[1] + powf(f * I_a, m));
-      I_l = output[2] + ic * (L - output[2]);
-      I_g = avg->cav[2] + ic * (avg->lav - avg->cav[2]);
-      I_a = I_l + ia * (I_g - I_l);
-      output[2] /= (output[2] + powf(f * I_a, m));
-      /* Apply mask. */
-      output[0] = input[0] * (1.0f - mask[0]) + output[0] * mask[0];
-      output[1] = input[1] * (1.0f - mask[1]) + output[1] * mask[1];
-      output[2] = input[2] * (1.0f - mask[2]) + output[2] * mask[2];
-      /* Copy result back. */
-      IMB_colormanagement_scene_linear_to_colorspace_v3(output, avg->colorspace);
-      if (rect_float) {
-        copy_v4_v4(&rect_float[pixel_index], output);
-      }
-      else {
-        premul_float_to_straight_uchar(&rect[pixel_index], output);
-      }
-    }
-  }
-}
-
-static void tonemapmodifier_apply(struct SequenceModifierData *smd, ImBuf *ibuf, ImBuf *mask)
-{
-  SequencerTonemapModifierData *tmmd = (SequencerTonemapModifierData *)smd;
-  AvgLogLum data;
-  data.tmmd = tmmd;
-  data.colorspace = (ibuf->rect_float != NULL) ? ibuf->float_colorspace : ibuf->rect_colorspace;
-  float lsum = 0.0f;
-  int p = ibuf->x * ibuf->y;
-  float *fp = ibuf->rect_float;
-  unsigned char *cp = (unsigned char *)ibuf->rect;
-  float avl, maxl = -FLT_MAX, minl = FLT_MAX;
-  const float sc = 1.0f / p;
-  float Lav = 0.f;
-  float cav[4] = {0.0f, 0.0f, 0.0f, 0.0f};
-  while (p--) {
-    float pixel[4];
-    if (fp != NULL) {
-      copy_v4_v4(pixel, fp);
-    }
-    else {
-      straight_uchar_to_premul_float(pixel, cp);
-    }
-    IMB_colormanagement_colorspace_to_scene_linear_v3(pixel, data.colorspace);
-    float L = IMB_colormanagement_get_luminance(pixel);
-    Lav += L;
-    add_v3_v3(cav, pixel);
-    lsum += logf(max_ff(L, 0.0f) + 1e-5f);
-    maxl = (L > maxl) ? L : maxl;
-    minl = (L < minl) ? L : minl;
-    if (fp != NULL) {
-      fp += 4;
-    }
-    else {
-      cp += 4;
-    }
-  }
-  data.lav = Lav * sc;
-  mul_v3_v3fl(data.cav, cav, sc);
-  maxl = logf(maxl + 1e-5f);
-  minl = logf(minl + 1e-5f);
-  avl = lsum * sc;
-  data.auto_key = (maxl > minl) ? ((maxl - avl) / (maxl - minl)) : 1.0f;
-  float al = expf(avl);
-  data.al = (al == 0.0f) ? 0.0f : (tmmd->key / al);
-  data.igm = (tmmd->gamma == 0.0f) ? 1.0f : (1.0f / tmmd->gamma);
-
-  if (tmmd->type == SEQ_TONEMAP_RD_PHOTORECEPTOR) {
-    modifier_apply_threaded(ibuf, mask, tonemapmodifier_apply_threaded_photoreceptor, &data);
-  }
-  else /* if (tmmd->type == SEQ_TONEMAP_RD_SIMPLE) */ {
-    modifier_apply_threaded(ibuf, mask, tonemapmodifier_apply_threaded_simple, &data);
-  }
-}
-
-static SequenceModifierTypeInfo seqModifier_Tonemap = {
-    CTX_N_(BLT_I18NCONTEXT_ID_SEQUENCE, "Tonemap"), /* name */
-    "SequencerTonemapModifierData",                 /* struct_name */
-    sizeof(SequencerTonemapModifierData),           /* struct_size */
-    tonemapmodifier_init_data,                      /* init_data */
-    NULL,                                           /* free_data */
-    NULL,                                           /* copy_data */
-    tonemapmodifier_apply,                          /* apply */
-};
-
-/** \} */
-
-/* -------------------------------------------------------------------- */
-/** \name Public Modifier Functions
- * \{ */
-
-static void sequence_modifier_type_info_init(void)
-{
-#define INIT_TYPE(typeName) (modifiersTypes[seqModifierType_##typeName] = &seqModifier_##typeName)
-
-  INIT_TYPE(ColorBalance);
-  INIT_TYPE(Curves);
-  INIT_TYPE(HueCorrect);
-  INIT_TYPE(BrightContrast);
-  INIT_TYPE(Mask);
-  INIT_TYPE(WhiteBalance);
-  INIT_TYPE(Tonemap);
-
-#undef INIT_TYPE
-}
-
-const SequenceModifierTypeInfo *BKE_sequence_modifier_type_info_get(int type)
-{
-  if (!modifierTypesInit) {
-    sequence_modifier_type_info_init();
-    modifierTypesInit = true;
-  }
-
-  return modifiersTypes[type];
-}
-
-SequenceModifierData *BKE_sequence_modifier_new(Sequence *seq, const char *name, int type)
-{
-  SequenceModifierData *smd;
-  const SequenceModifierTypeInfo *smti = BKE_sequence_modifier_type_info_get(type);
-
-  smd = MEM_callocN(smti->struct_size, "sequence modifier");
-
-  smd->type = type;
-  smd->flag |= SEQUENCE_MODIFIER_EXPANDED;
-
-  if (!name || !name[0]) {
-    BLI_strncpy(smd->name, smti->name, sizeof(smd->name));
-  }
-  else {
-    BLI_strncpy(smd->name, name, sizeof(smd->name));
-  }
-
-  BLI_addtail(&seq->modifiers, smd);
-
-  BKE_sequence_modifier_unique_name(seq, smd);
-
-  if (smti->init_data) {
-    smti->init_data(smd);
-  }
-
-  return smd;
-}
-
-bool BKE_sequence_modifier_remove(Sequence *seq, SequenceModifierData *smd)
-{
-  if (BLI_findindex(&seq->modifiers, smd) == -1) {
-    return false;
-  }
-
-  BLI_remlink(&seq->modifiers, smd);
-  BKE_sequence_modifier_free(smd);
-
-  return true;
-}
-
-void BKE_sequence_modifier_clear(Sequence *seq)
-{
-  SequenceModifierData *smd, *smd_next;
-
-  for (smd = seq->modifiers.first; smd; smd = smd_next) {
-    smd_next = smd->next;
-    BKE_sequence_modifier_free(smd);
-  }
-
-  BLI_listbase_clear(&seq->modifiers);
-}
-
-void BKE_sequence_modifier_free(SequenceModifierData *smd)
-{
-  const SequenceModifierTypeInfo *smti = BKE_sequence_modifier_type_info_get(smd->type);
-
-  if (smti && smti->free_data) {
-    smti->free_data(smd);
-  }
-
-  MEM_freeN(smd);
-}
-
-void BKE_sequence_modifier_unique_name(Sequence *seq, SequenceModifierData *smd)
-{
-  const SequenceModifierTypeInfo *smti = BKE_sequence_modifier_type_info_get(smd->type);
-
-  BLI_uniquename(&seq->modifiers,
-                 smd,
-                 CTX_DATA_(BLT_I18NCONTEXT_ID_SEQUENCE, smti->name),
-                 '.',
-                 offsetof(SequenceModifierData, name),
-                 sizeof(smd->name));
-}
-
-SequenceModifierData *BKE_sequence_modifier_find_by_name(Sequence *seq, const char *name)
-{
-  return BLI_findstring(&(seq->modifiers), name, offsetof(SequenceModifierData, name));
-}
-
-ImBuf *BKE_sequence_modifier_apply_stack(const SeqRenderData *context,
-                                         Sequence *seq,
-                                         ImBuf *ibuf,
-                                         int cfra)
-{
-  SequenceModifierData *smd;
-  ImBuf *processed_ibuf = ibuf;
-
-  if (seq->modifiers.first && (seq->flag & SEQ_USE_LINEAR_MODIFIERS)) {
-    processed_ibuf = IMB_dupImBuf(ibuf);
-    BKE_sequencer_imbuf_from_sequencer_space(context->scene, processed_ibuf);
-  }
-
-  for (smd = seq->modifiers.first; smd; smd = smd->next) {
-    const SequenceModifierTypeInfo *smti = BKE_sequence_modifier_type_info_get(smd->type);
-
-    /* could happen if modifier is being removed or not exists in current version of blender */
-    if (!smti) {
-      continue;
-    }
-
-    /* modifier is muted, do nothing */
-    if (smd->flag & SEQUENCE_MODIFIER_MUTE) {
-      continue;
-    }
-
-    if (smti->apply) {
-      int frame_offset;
-      if (smd->mask_time == SEQUENCE_MASK_TIME_RELATIVE) {
-        frame_offset = seq->start;
-      }
-      else /*if (smd->mask_time == SEQUENCE_MASK_TIME_ABSOLUTE)*/ {
-        frame_offset = smd->mask_id ? ((Mask *)smd->mask_id)->sfra : 0;
-      }
-
-      ImBuf *mask = modifier_mask_get(smd, context, cfra, frame_offset, ibuf->rect_float != NULL);
-
-      if (processed_ibuf == ibuf) {
-        processed_ibuf = IMB_dupImBuf(ibuf);
-      }
-
-      smti->apply(smd, processed_ibuf, mask);
-
-      if (mask) {
-        IMB_freeImBuf(mask);
-      }
-    }
-  }
-
-  if (seq->modifiers.first && (seq->flag & SEQ_USE_LINEAR_MODIFIERS)) {
-    BKE_sequencer_imbuf_to_sequencer_space(context->scene, processed_ibuf, false);
-  }
-
-  return processed_ibuf;
-}
-
-void BKE_sequence_modifier_list_copy(Sequence *seqn, Sequence *seq)
-{
-  SequenceModifierData *smd;
-
-  for (smd = seq->modifiers.first; smd; smd = smd->next) {
-    SequenceModifierData *smdn;
-    const SequenceModifierTypeInfo *smti = BKE_sequence_modifier_type_info_get(smd->type);
-
-    smdn = MEM_dupallocN(smd);
-
-    if (smti && smti->copy_data) {
-      smti->copy_data(smdn, smd);
-    }
-
-    smdn->next = smdn->prev = NULL;
-    BLI_addtail(&seqn->modifiers, smdn);
-  }
-}
-
-int BKE_sequence_supports_modifiers(Sequence *seq)
-{
-  return !ELEM(seq->type, SEQ_TYPE_SOUND_RAM, SEQ_TYPE_SOUND_HD);
-}
-
-/** \} */
diff --git a/source/blender/blenkernel/intern/seqprefetch.c b/source/blender/blenkernel/intern/seqprefetch.c
deleted file mode 100644
index 013abb716d4..00000000000
--- a/source/blender/blenkernel/intern/seqprefetch.c
+++ /dev/null
@@ -1,568 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- */
-
-/** \file
- * \ingroup bke
- */
-
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "MEM_guardedalloc.h"
-
-#include "DNA_anim_types.h"
-#include "DNA_scene_types.h"
-#include "DNA_screen_types.h"
-#include "DNA_sequence_types.h"
-#include "DNA_windowmanager_types.h"
-
-#include "BLI_listbase.h"
-#include "BLI_threads.h"
-
-#include "IMB_imbuf.h"
-#include "IMB_imbuf_types.h"
-
-#include "BKE_anim_data.h"
-#include "BKE_animsys.h"
-#include "BKE_context.h"
-#include "BKE_global.h"
-#include "BKE_layer.h"
-#include "BKE_lib_id.h"
-#include "BKE_main.h"
-#include "BKE_scene.h"
-#include "BKE_sequencer.h"
-
-#include "DEG_depsgraph.h"
-#include "DEG_depsgraph_build.h"
-#include "DEG_depsgraph_debug.h"
-#include "DEG_depsgraph_query.h"
-
-typedef struct PrefetchJob {
-  struct PrefetchJob *next, *prev;
-
-  struct Main *bmain;
-  struct Main *bmain_eval;
-  struct Scene *scene;
-  struct Scene *scene_eval;
-  struct Depsgraph *depsgraph;
-
-  ThreadMutex prefetch_suspend_mutex;
-  ThreadCondition prefetch_suspend_cond;
-
-  ListBase threads;
-
-  /* context */
-  struct SeqRenderData context;
-  struct SeqRenderData context_cpy;
-  struct ListBase *seqbasep;
-  struct ListBase *seqbasep_cpy;
-
-  /* prefetch area */
-  float cfra;
-  int num_frames_prefetched;
-
-  /* control */
-  bool running;
-  bool waiting;
-  bool stop;
-} PrefetchJob;
-
-static bool seq_prefetch_is_playing(Main *bmain)
-{
-  for (bScreen *screen = bmain->screens.first; screen; screen = screen->id.next) {
-    if (screen->animtimer) {
-      return true;
-    }
-  }
-  return false;
-}
-
-static bool seq_prefetch_is_scrubbing(Main *bmain)
-{
-
-  for (bScreen *screen = bmain->screens.first; screen; screen = screen->id.next) {
-    if (screen->scrubbing) {
-      return true;
-    }
-  }
-  return false;
-}
-
-static PrefetchJob *seq_prefetch_job_get(Scene *scene)
-{
-  if (scene && scene->ed) {
-    return scene->ed->prefetch_job;
-  }
-  return NULL;
-}
-
-bool BKE_sequencer_prefetch_job_is_running(Scene *scene)
-{
-  PrefetchJob *pfjob = seq_prefetch_job_get(scene);
-
-  if (!pfjob) {
-    return false;
-  }
-
-  return pfjob->running;
-}
-
-static bool seq_prefetch_job_is_waiting(Scene *scene)
-{
-  PrefetchJob *pfjob = seq_prefetch_job_get(scene);
-
-  if (!pfjob) {
-    return false;
-  }
-
-  return pfjob->waiting;
-}
-
-static Sequence *sequencer_prefetch_get_original_sequence(Sequence *seq, ListBase *seqbase)
-{
-  LISTBASE_FOREACH (Sequence *, seq_orig, seqbase) {
-    if (STREQ(seq->name, seq_orig->name)) {
-      return seq_orig;
-    }
-
-    if (seq_orig->type == SEQ_TYPE_META) {
-      Sequence *match = sequencer_prefetch_get_original_sequence(seq, &seq_orig->seqbase);
-      if (match != NULL) {
-        return match;
-      }
-    }
-  }
-
-  return NULL;
-}
-
-/* for cache context swapping */
-Sequence *BKE_sequencer_prefetch_get_original_sequence(Sequence *seq, Scene *scene)
-{
-  Editing *ed = scene->ed;
-  return sequencer_prefetch_get_original_sequence(seq, &ed->seqbase);
-}
-
-/* for cache context swapping */
-SeqRenderData *BKE_sequencer_prefetch_get_original_context(const SeqRenderData *context)
-{
-  PrefetchJob *pfjob = seq_prefetch_job_get(context->scene);
-
-  return &pfjob->context;
-}
-
-static bool seq_prefetch_is_cache_full(Scene *scene)
-{
-  PrefetchJob *pfjob = seq_prefetch_job_get(scene);
-
-  if (!BKE_sequencer_cache_is_full(pfjob->scene)) {
-    return false;
-  }
-
-  return BKE_sequencer_cache_recycle_item(pfjob->scene) == false;
-}
-
-static float seq_prefetch_cfra(PrefetchJob *pfjob)
-{
-  return pfjob->cfra + pfjob->num_frames_prefetched;
-}
-static AnimationEvalContext seq_prefetch_anim_eval_context(PrefetchJob *pfjob)
-{
-  return BKE_animsys_eval_context_construct(pfjob->depsgraph, seq_prefetch_cfra(pfjob));
-}
-
-void BKE_sequencer_prefetch_get_time_range(Scene *scene, int *start, int *end)
-{
-  PrefetchJob *pfjob = seq_prefetch_job_get(scene);
-
-  *start = pfjob->cfra;
-  *end = seq_prefetch_cfra(pfjob);
-}
-
-static void seq_prefetch_free_depsgraph(PrefetchJob *pfjob)
-{
-  if (pfjob->depsgraph != NULL) {
-    DEG_graph_free(pfjob->depsgraph);
-  }
-  pfjob->depsgraph = NULL;
-  pfjob->scene_eval = NULL;
-}
-
-static void seq_prefetch_update_depsgraph(PrefetchJob *pfjob)
-{
-  DEG_evaluate_on_framechange(pfjob->depsgraph, seq_prefetch_cfra(pfjob));
-}
-
-static void seq_prefetch_init_depsgraph(PrefetchJob *pfjob)
-{
-  Main *bmain = pfjob->bmain_eval;
-  Scene *scene = pfjob->scene;
-  ViewLayer *view_layer = BKE_view_layer_default_render(scene);
-
-  pfjob->depsgraph = DEG_graph_new(bmain, scene, view_layer, DAG_EVAL_RENDER);
-  DEG_debug_name_set(pfjob->depsgraph, "SEQUENCER PREFETCH");
-
-  /* Make sure there is a correct evaluated scene pointer. */
-  DEG_graph_build_for_render_pipeline(pfjob->depsgraph);
-
-  /* Update immediately so we have proper evaluated scene. */
-  seq_prefetch_update_depsgraph(pfjob);
-
-  pfjob->scene_eval = DEG_get_evaluated_scene(pfjob->depsgraph);
-  pfjob->scene_eval->ed->cache_flag = 0;
-}
-
-static void seq_prefetch_update_area(PrefetchJob *pfjob)
-{
-  int cfra = pfjob->scene->r.cfra;
-
-  /* rebase */
-  if (cfra > pfjob->cfra) {
-    int delta = cfra - pfjob->cfra;
-    pfjob->cfra = cfra;
-    pfjob->num_frames_prefetched -= delta;
-
-    if (pfjob->num_frames_prefetched <= 1) {
-      pfjob->num_frames_prefetched = 1;
-    }
-  }
-
-  /* reset */
-  if (cfra < pfjob->cfra) {
-    pfjob->cfra = cfra;
-    pfjob->num_frames_prefetched = 1;
-  }
-}
-
-void BKE_sequencer_prefetch_stop_all(void)
-{
-  /*TODO(Richard): Use wm_jobs for prefetch, or pass main. */
-  for (Scene *scene = G.main->scenes.first; scene; scene = scene->id.next) {
-    BKE_sequencer_prefetch_stop(scene);
-  }
-}
-
-/* Use also to update scene and context changes
- * This function should almost always be called by cache invalidation, not directly.
- */
-void BKE_sequencer_prefetch_stop(Scene *scene)
-{
-  PrefetchJob *pfjob;
-  pfjob = seq_prefetch_job_get(scene);
-
-  if (!pfjob) {
-    return;
-  }
-
-  pfjob->stop = true;
-
-  while (pfjob->running) {
-    BLI_condition_notify_one(&pfjob->prefetch_suspend_cond);
-  }
-}
-
-static void seq_prefetch_update_context(const SeqRenderData *context)
-{
-  PrefetchJob *pfjob;
-  pfjob = seq_prefetch_job_get(context->scene);
-
-  BKE_sequencer_new_render_data(pfjob->bmain_eval,
-                                pfjob->depsgraph,
-                                pfjob->scene_eval,
-                                context->rectx,
-                                context->recty,
-                                context->preview_render_size,
-                                false,
-                                &pfjob->context_cpy);
-  pfjob->context_cpy.is_prefetch_render = true;
-  pfjob->context_cpy.task_id = SEQ_TASK_PREFETCH_RENDER;
-
-  BKE_sequencer_new_render_data(pfjob->bmain,
-                                pfjob->depsgraph,
-                                pfjob->scene,
-                                context->rectx,
-                                context->recty,
-                                context->preview_render_size,
-                                false,
-                                &pfjob->context);
-  pfjob->context.is_prefetch_render = false;
-
-  /* Same ID as prefetch context, because context will be swapped, but we still
-   * want to assign this ID to cache entries created in this thread.
-   * This is to allow "temp cache" work correctly for both threads.
-   */
-  pfjob->context.task_id = SEQ_TASK_PREFETCH_RENDER;
-}
-
-static void seq_prefetch_update_scene(Scene *scene)
-{
-  PrefetchJob *pfjob = seq_prefetch_job_get(scene);
-
-  if (!pfjob) {
-    return;
-  }
-
-  seq_prefetch_free_depsgraph(pfjob);
-  seq_prefetch_init_depsgraph(pfjob);
-}
-
-static void seq_prefetch_resume(Scene *scene)
-{
-  PrefetchJob *pfjob = seq_prefetch_job_get(scene);
-
-  if (pfjob && pfjob->waiting) {
-    BLI_condition_notify_one(&pfjob->prefetch_suspend_cond);
-  }
-}
-
-void BKE_sequencer_prefetch_free(Scene *scene)
-{
-  PrefetchJob *pfjob = seq_prefetch_job_get(scene);
-  if (!pfjob) {
-    return;
-  }
-
-  BKE_sequencer_prefetch_stop(scene);
-
-  BLI_threadpool_remove(&pfjob->threads, pfjob);
-  BLI_threadpool_end(&pfjob->threads);
-  BLI_mutex_end(&pfjob->prefetch_suspend_mutex);
-  BLI_condition_end(&pfjob->prefetch_suspend_cond);
-  seq_prefetch_free_depsgraph(pfjob);
-  BKE_main_free(pfjob->bmain_eval);
-  MEM_freeN(pfjob);
-  scene->ed->prefetch_job = NULL;
-}
-
-static bool seq_prefetch_do_skip_frame(Scene *scene)
-{
-  Editing *ed = scene->ed;
-  PrefetchJob *pfjob = seq_prefetch_job_get(scene);
-  float cfra = seq_prefetch_cfra(pfjob);
-  Sequence *seq_arr[MAXSEQ + 1];
-  int count = BKE_sequencer_get_shown_sequences(ed->seqbasep, cfra, 0, seq_arr);
-  SeqRenderData *ctx = &pfjob->context_cpy;
-  ImBuf *ibuf = NULL;
-
-  /* Disable prefetching 3D scene strips, but check for disk cache. */
-  for (int i = 0; i < count; i++) {
-    if (seq_arr[i]->type == SEQ_TYPE_SCENE && (seq_arr[i]->flag & SEQ_SCENE_STRIPS) == 0) {
-      int cached_types = 0;
-
-      ibuf = BKE_sequencer_cache_get(ctx, seq_arr[i], cfra, SEQ_CACHE_STORE_FINAL_OUT, false);
-      if (ibuf != NULL) {
-        cached_types |= SEQ_CACHE_STORE_FINAL_OUT;
-        IMB_freeImBuf(ibuf);
-        ibuf = NULL;
-      }
-
-      ibuf = BKE_sequencer_cache_get(ctx, seq_arr[i], cfra, SEQ_CACHE_STORE_FINAL_OUT, false);
-      if (ibuf != NULL) {
-        cached_types |= SEQ_CACHE_STORE_COMPOSITE;
-        IMB_freeImBuf(ibuf);
-        ibuf = NULL;
-      }
-
-      ibuf = BKE_sequencer_cache_get(ctx, seq_arr[i], cfra, SEQ_CACHE_STORE_PREPROCESSED, false);
-      if (ibuf != NULL) {
-        cached_types |= SEQ_CACHE_STORE_PREPROCESSED;
-        IMB_freeImBuf(ibuf);
-        ibuf = NULL;
-      }
-
-      ibuf = BKE_sequencer_cache_get(ctx, seq_arr[i], cfra, SEQ_CACHE_STORE_RAW, false);
-      if (ibuf != NULL) {
-        cached_types |= SEQ_CACHE_STORE_RAW;
-        IMB_freeImBuf(ibuf);
-        ibuf = NULL;
-      }
-
-      if ((cached_types & (SEQ_CACHE_STORE_RAW | SEQ_CACHE_STORE_PREPROCESSED)) != 0) {
-        continue;
-      }
-
-      /* It is only safe to use these cache types if strip is last in stack. */
-      if (i == count - 1 &&
-          (cached_types & (SEQ_CACHE_STORE_PREPROCESSED | SEQ_CACHE_STORE_RAW)) != 0) {
-        continue;
-      }
-
-      return true;
-    }
-  }
-
-  return false;
-}
-
-static bool seq_prefetch_need_suspend(PrefetchJob *pfjob)
-{
-  return seq_prefetch_is_cache_full(pfjob->scene) || seq_prefetch_is_scrubbing(pfjob->bmain) ||
-         (seq_prefetch_cfra(pfjob) >= pfjob->scene->r.efra);
-}
-
-static void seq_prefetch_do_suspend(PrefetchJob *pfjob)
-{
-  BLI_mutex_lock(&pfjob->prefetch_suspend_mutex);
-  while (seq_prefetch_need_suspend(pfjob) &&
-         (pfjob->scene->ed->cache_flag & SEQ_CACHE_PREFETCH_ENABLE) && !pfjob->stop) {
-    pfjob->waiting = true;
-    BLI_condition_wait(&pfjob->prefetch_suspend_cond, &pfjob->prefetch_suspend_mutex);
-    seq_prefetch_update_area(pfjob);
-  }
-  pfjob->waiting = false;
-  BLI_mutex_unlock(&pfjob->prefetch_suspend_mutex);
-}
-
-static void *seq_prefetch_frames(void *job)
-{
-  PrefetchJob *pfjob = (PrefetchJob *)job;
-
-  while (seq_prefetch_cfra(pfjob) <= pfjob->scene->r.efra) {
-    pfjob->scene_eval->ed->prefetch_job = NULL;
-
-    seq_prefetch_update_depsgraph(pfjob);
-    AnimData *adt = BKE_animdata_from_id(&pfjob->context_cpy.scene->id);
-    AnimationEvalContext anim_eval_context = seq_prefetch_anim_eval_context(pfjob);
-    BKE_animsys_evaluate_animdata(
-        &pfjob->context_cpy.scene->id, adt, &anim_eval_context, ADT_RECALC_ALL, false);
-
-    /* This is quite hacky solution:
-     * We need cross-reference original scene with copy for cache.
-     * However depsgraph must not have this data, because it will try to kill this job.
-     * Scene copy don't reference original scene. Perhaps, this could be done by depsgraph.
-     * Set to NULL before return!
-     */
-    pfjob->scene_eval->ed->prefetch_job = pfjob;
-
-    if (seq_prefetch_do_skip_frame(pfjob->scene)) {
-      pfjob->num_frames_prefetched++;
-      continue;
-    }
-
-    ImBuf *ibuf = BKE_sequencer_give_ibuf(&pfjob->context_cpy, seq_prefetch_cfra(pfjob), 0);
-    BKE_sequencer_cache_free_temp_cache(
-        pfjob->scene, pfjob->context.task_id, seq_prefetch_cfra(pfjob));
-    IMB_freeImBuf(ibuf);
-
-    /* Suspend thread if there is nothing to be prefetched. */
-    seq_prefetch_do_suspend(pfjob);
-
-    /* Avoid "collision" with main thread, but make sure to fetch at least few frames */
-    if (pfjob->num_frames_prefetched > 5 &&
-        (seq_prefetch_cfra(pfjob) - pfjob->scene->r.cfra) < 2) {
-      break;
-    }
-
-    if (!(pfjob->scene->ed->cache_flag & SEQ_CACHE_PREFETCH_ENABLE) || pfjob->stop) {
-      break;
-    }
-
-    seq_prefetch_update_area(pfjob);
-    pfjob->num_frames_prefetched++;
-  }
-
-  BKE_sequencer_cache_free_temp_cache(
-      pfjob->scene, pfjob->context.task_id, seq_prefetch_cfra(pfjob));
-  pfjob->running = false;
-  pfjob->scene_eval->ed->prefetch_job = NULL;
-
-  return NULL;
-}
-
-static PrefetchJob *seq_prefetch_start(const SeqRenderData *context, float cfra)
-{
-  PrefetchJob *pfjob = seq_prefetch_job_get(context->scene);
-
-  if (!pfjob) {
-    if (context->scene->ed) {
-      pfjob = (PrefetchJob *)MEM_callocN(sizeof(PrefetchJob), "PrefetchJob");
-      context->scene->ed->prefetch_job = pfjob;
-
-      BLI_threadpool_init(&pfjob->threads, seq_prefetch_frames, 1);
-      BLI_mutex_init(&pfjob->prefetch_suspend_mutex);
-      BLI_condition_init(&pfjob->prefetch_suspend_cond);
-
-      pfjob->bmain = context->bmain;
-      pfjob->bmain_eval = BKE_main_new();
-
-      pfjob->scene = context->scene;
-      seq_prefetch_init_depsgraph(pfjob);
-    }
-  }
-  seq_prefetch_update_scene(context->scene);
-  seq_prefetch_update_context(context);
-
-  pfjob->cfra = cfra;
-  pfjob->num_frames_prefetched = 1;
-
-  pfjob->waiting = false;
-  pfjob->stop = false;
-  pfjob->running = true;
-
-  BLI_threadpool_remove(&pfjob->threads, pfjob);
-  BLI_threadpool_insert(&pfjob->threads, pfjob);
-
-  return pfjob;
-}
-
-/* Start or resume prefetching*/
-void BKE_sequencer_prefetch_start(const SeqRenderData *context, float cfra, float cost)
-{
-  Scene *scene = context->scene;
-  Editing *ed = scene->ed;
-  bool has_strips = (bool)ed->seqbasep->first;
-
-  if (!context->is_prefetch_render && !context->is_proxy_render) {
-    bool playing = seq_prefetch_is_playing(context->bmain);
-    bool scrubbing = seq_prefetch_is_scrubbing(context->bmain);
-    bool running = BKE_sequencer_prefetch_job_is_running(scene);
-    seq_prefetch_resume(scene);
-    /* conditions to start:
-     * prefetch enabled, prefetch not running, not scrubbing,
-     * not playing and rendering-expensive footage, cache storage enabled, has strips to render,
-     * not rendering, not doing modal transform - important, see D7820.
-     */
-    if ((ed->cache_flag & SEQ_CACHE_PREFETCH_ENABLE) && !running && !scrubbing &&
-        !(playing && cost > 0.9) && ed->cache_flag & SEQ_CACHE_ALL_TYPES && has_strips &&
-        !G.is_rendering && !G.moving) {
-
-      seq_prefetch_start(context, cfra);
-    }
-  }
-}
-
-bool BKE_sequencer_prefetch_need_redraw(Main *bmain, Scene *scene)
-{
-  bool playing = seq_prefetch_is_playing(bmain);
-  bool scrubbing = seq_prefetch_is_scrubbing(bmain);
-  bool running = BKE_sequencer_prefetch_job_is_running(scene);
-  bool suspended = seq_prefetch_job_is_waiting(scene);
-
-  /* force redraw, when prefetching and using cache view. */
-  if (running && !playing && !suspended && scene->ed->cache_flag & SEQ_CACHE_VIEW_ENABLE) {
-    return true;
-  }
-  /* Sometimes scrubbing flag is set when not scrubbing. In that case I want to catch "event" of
-   * stopping scrubbing */
-  if (scrubbing) {
-    return true;
-  }
-  return false;
-}
diff --git a/source/blender/blenkernel/intern/sequencer.c b/source/blender/blenkernel/intern/sequencer.c
deleted file mode 100644
index b8ccdec0902..00000000000
--- a/source/blender/blenkernel/intern/sequencer.c
+++ /dev/null
@@ -1,6193 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
- * All rights reserved.
- *
- * - Blender Foundation, 2003-2009
- * - Peter Schlaile <peter [at] schlaile [dot] de> 2005/2006
- */
-
-/** \file
- * \ingroup bke
- */
-
-#include <math.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-
-#include "MEM_guardedalloc.h"
-
-#include "DNA_anim_types.h"
-#include "DNA_mask_types.h"
-#include "DNA_movieclip_types.h"
-#include "DNA_object_types.h"
-#include "DNA_scene_types.h"
-#include "DNA_sequence_types.h"
-#include "DNA_sound_types.h"
-#include "DNA_space_types.h"
-#include "DNA_windowmanager_types.h"
-
-#include "BLI_fileops.h"
-#include "BLI_linklist.h"
-#include "BLI_listbase.h"
-#include "BLI_math.h"
-#include "BLI_path_util.h"
-#include "BLI_session_uuid.h"
-#include "BLI_string.h"
-#include "BLI_string_utf8.h"
-#include "BLI_threads.h"
-#include "BLI_utildefines.h"
-
-#ifdef WIN32
-#  include "BLI_winstuff.h"
-#else
-#  include <unistd.h>
-#endif
-
-#include "BLT_translation.h"
-
-#include "BKE_anim_data.h"
-#include "BKE_animsys.h"
-#include "BKE_fcurve.h"
-#include "BKE_global.h"
-#include "BKE_idprop.h"
-#include "BKE_image.h"
-#include "BKE_layer.h"
-#include "BKE_lib_id.h"
-#include "BKE_main.h"
-#include "BKE_mask.h"
-#include "BKE_movieclip.h"
-#include "BKE_report.h"
-#include "BKE_scene.h"
-#include "BKE_sequencer.h"
-#include "BKE_sequencer_offscreen.h"
-
-#include "DEG_depsgraph.h"
-#include "DEG_depsgraph_query.h"
-
-#include "RNA_access.h"
-
-#include "RE_pipeline.h"
-
-#include <pthread.h>
-
-#include "IMB_colormanagement.h"
-#include "IMB_imbuf.h"
-#include "IMB_imbuf_types.h"
-#include "IMB_metadata.h"
-
-#include "BKE_context.h"
-#include "BKE_sound.h"
-
-#include "RE_engine.h"
-
-#ifdef WITH_AUDASPACE
-#  include <AUD_Special.h>
-#endif
-
-/* mutable state for sequencer */
-typedef struct SeqRenderState {
-  LinkNode *scene_parents;
-} SeqRenderState;
-
-static ImBuf *seq_render_strip_stack(const SeqRenderData *context,
-                                     SeqRenderState *state,
-                                     ListBase *seqbasep,
-                                     float cfra,
-                                     int chanshown);
-static ImBuf *seq_render_preprocess_ibuf(const SeqRenderData *context,
-                                         Sequence *seq,
-                                         ImBuf *ibuf,
-                                         float cfra,
-                                         clock_t begin,
-                                         bool use_preprocess,
-                                         const bool is_proxy_image);
-static ImBuf *seq_render_strip(const SeqRenderData *context,
-                               SeqRenderState *state,
-                               Sequence *seq,
-                               float cfra);
-static void seq_free_animdata(Scene *scene, Sequence *seq);
-static ImBuf *seq_render_mask(const SeqRenderData *context, Mask *mask, float nr, bool make_float);
-static int seq_num_files(Scene *scene, char views_format, const bool is_multiview);
-static void seq_anim_add_suffix(Scene *scene, struct anim *anim, const int view_id);
-
-static ThreadMutex seq_render_mutex = BLI_MUTEX_INITIALIZER;
-
-/* **** XXX ******** */
-#define SELECT 1
-ListBase seqbase_clipboard;
-int seqbase_clipboard_frame;
-
-SequencerDrawView sequencer_view3d_fn = NULL; /* NULL in background mode */
-
-#if 0 /* unused function */
-static void printf_strip(Sequence *seq)
-{
-  fprintf(stderr,
-          "name: '%s', len:%d, start:%d, (startofs:%d, endofs:%d), "
-          "(startstill:%d, endstill:%d), machine:%d, (startdisp:%d, enddisp:%d)\n",
-          seq->name,
-          seq->len,
-          seq->start,
-          seq->startofs,
-          seq->endofs,
-          seq->startstill,
-          seq->endstill,
-          seq->machine,
-          seq->startdisp,
-          seq->enddisp);
-
-  fprintf(stderr,
-          "\tseq_tx_set_final_left: %d %d\n\n",
-          seq_tx_get_final_left(seq, 0),
-          seq_tx_get_final_right(seq, 0));
-}
-#endif
-
-static void sequencer_state_init(SeqRenderState *state)
-{
-  state->scene_parents = NULL;
-}
-
-int BKE_sequencer_base_recursive_apply(ListBase *seqbase,
-                                       int (*apply_fn)(Sequence *seq, void *),
-                                       void *arg)
-{
-  Sequence *iseq;
-  for (iseq = seqbase->first; iseq; iseq = iseq->next) {
-    if (BKE_sequencer_recursive_apply(iseq, apply_fn, arg) == -1) {
-      return -1; /* bail out */
-    }
-  }
-  return 1;
-}
-
-int BKE_sequencer_recursive_apply(Sequence *seq, int (*apply_fn)(Sequence *, void *), void *arg)
-{
-  int ret = apply_fn(seq, arg);
-
-  if (ret == -1) {
-    return -1; /* bail out */
-  }
-
-  if (ret && seq->seqbase.first) {
-    ret = BKE_sequencer_base_recursive_apply(&seq->seqbase, apply_fn, arg);
-  }
-
-  return ret;
-}
-
-/*********************** alloc / free functions *************************/
-
-/* free */
-
-static void free_proxy_seq(Sequence *seq)
-{
-  if (seq->strip && seq->strip->proxy && seq->strip->proxy->anim) {
-    IMB_free_anim(seq->strip->proxy->anim);
-    seq->strip->proxy->anim = NULL;
-  }
-}
-
-static void seq_free_strip(Strip *strip)
-{
-  strip->us--;
-  if (strip->us > 0) {
-    return;
-  }
-  if (strip->us < 0) {
-    printf("error: negative users in strip\n");
-    return;
-  }
-
-  if (strip->stripdata) {
-    MEM_freeN(strip->stripdata);
-  }
-
-  if (strip->proxy) {
-    if (strip->proxy->anim) {
-      IMB_free_anim(strip->proxy->anim);
-    }
-
-    MEM_freeN(strip->proxy);
-  }
-  if (strip->crop) {
-    MEM_freeN(strip->crop);
-  }
-  if (strip->transform) {
-    MEM_freeN(strip->transform);
-  }
-
-  MEM_freeN(strip);
-}
-
-/* only give option to skip cache locally (static func) */
-static void BKE_sequence_free_ex(Scene *scene,
-                                 Sequence *seq,
-                                 const bool do_cache,
-                                 const bool do_id_user,
-                                 const bool do_clean_animdata)
-{
-  if (seq->strip) {
-    seq_free_strip(seq->strip);
-  }
-
-  BKE_sequence_free_anim(seq);
-
-  if (seq->type & SEQ_TYPE_EFFECT) {
-    struct SeqEffectHandle sh = BKE_sequence_get_effect(seq);
-    sh.free(seq, do_id_user);
-  }
-
-  if (seq->sound && do_id_user) {
-    id_us_min(((ID *)seq->sound));
-  }
-
-  if (seq->stereo3d_format) {
-    MEM_freeN(seq->stereo3d_format);
-  }
-
-  /* clipboard has no scene and will never have a sound handle or be active
-   * same goes to sequences copy for proxy rebuild job
-   */
-  if (scene) {
-    Editing *ed = scene->ed;
-
-    if (ed->act_seq == seq) {
-      ed->act_seq = NULL;
-    }
-
-    if (seq->scene_sound && ELEM(seq->type, SEQ_TYPE_SOUND_RAM, SEQ_TYPE_SCENE)) {
-      BKE_sound_remove_scene_sound(scene, seq->scene_sound);
-    }
-
-    /* XXX This must not be done in BKE code. */
-    if (do_clean_animdata) {
-      seq_free_animdata(scene, seq);
-    }
-  }
-
-  if (seq->prop) {
-    IDP_FreePropertyContent_ex(seq->prop, do_id_user);
-    MEM_freeN(seq->prop);
-  }
-
-  /* free modifiers */
-  BKE_sequence_modifier_clear(seq);
-
-  /* free cached data used by this strip,
-   * also invalidate cache for all dependent sequences
-   *
-   * be _very_ careful here, invalidating cache loops over the scene sequences and
-   * assumes the listbase is valid for all strips,
-   * this may not be the case if lists are being freed.
-   * this is optional BKE_sequence_invalidate_cache
-   */
-  if (do_cache) {
-    if (scene) {
-      BKE_sequence_invalidate_cache_raw(scene, seq);
-    }
-  }
-
-  MEM_freeN(seq);
-}
-
-void BKE_sequence_free(Scene *scene, Sequence *seq, const bool do_clean_animdata)
-{
-  BKE_sequence_free_ex(scene, seq, true, true, do_clean_animdata);
-}
-
-/* Function to free imbuf and anim data on changes */
-void BKE_sequence_free_anim(Sequence *seq)
-{
-  while (seq->anims.last) {
-    StripAnim *sanim = seq->anims.last;
-
-    if (sanim->anim) {
-      IMB_free_anim(sanim->anim);
-      sanim->anim = NULL;
-    }
-
-    BLI_freelinkN(&seq->anims, sanim);
-  }
-  BLI_listbase_clear(&seq->anims);
-}
-
-/* cache must be freed before calling this function
- * since it leaves the seqbase in an invalid state */
-static void seq_free_sequence_recurse(Scene *scene, Sequence *seq, const bool do_id_user)
-{
-  Sequence *iseq, *iseq_next;
-
-  for (iseq = seq->seqbase.first; iseq; iseq = iseq_next) {
-    iseq_next = iseq->next;
-    seq_free_sequence_recurse(scene, iseq, do_id_user);
-  }
-
-  BKE_sequence_free_ex(scene, seq, false, do_id_user, true);
-}
-
-Editing *BKE_sequencer_editing_get(Scene *scene, bool alloc)
-{
-  if (alloc) {
-    BKE_sequencer_editing_ensure(scene);
-  }
-  return scene->ed;
-}
-
-void BKE_sequencer_free_clipboard(void)
-{
-  Sequence *seq, *nseq;
-
-  BKE_sequencer_base_clipboard_pointers_free(&seqbase_clipboard);
-
-  for (seq = seqbase_clipboard.first; seq; seq = nseq) {
-    nseq = seq->next;
-    seq_free_sequence_recurse(NULL, seq, false);
-  }
-  BLI_listbase_clear(&seqbase_clipboard);
-}
-
-/* -------------------------------------------------------------------- */
-/* Manage pointers in the clipboard.
- * note that these pointers should _never_ be access in the sequencer,
- * they are only for storage while in the clipboard
- * notice 'newid' is used for temp pointer storage here, validate on access (this is safe usage,
- * since those data-blocks are fully out of Main lists).
- */
-#define ID_PT (*id_pt)
-static void seqclipboard_ptr_free(Main *UNUSED(bmain), ID **id_pt)
-{
-  if (ID_PT) {
-    BLI_assert(ID_PT->newid != NULL);
-    MEM_freeN(ID_PT);
-    ID_PT = NULL;
-  }
-}
-static void seqclipboard_ptr_store(Main *UNUSED(bmain), ID **id_pt)
-{
-  if (ID_PT) {
-    ID *id_prev = ID_PT;
-    ID_PT = MEM_dupallocN(ID_PT);
-    ID_PT->newid = id_prev;
-  }
-}
-static void seqclipboard_ptr_restore(Main *bmain, ID **id_pt)
-{
-  if (ID_PT) {
-    const ListBase *lb = which_libbase(bmain, GS(ID_PT->name));
-    void *id_restore;
-
-    BLI_assert(ID_PT->newid != NULL);
-    if (BLI_findindex(lb, (ID_PT)->newid) != -1) {
-      /* the pointer is still valid */
-      id_restore = (ID_PT)->newid;
-    }
-    else {
-      /* the pointer of the same name still exists  */
-      id_restore = BLI_findstring(lb, (ID_PT)->name + 2, offsetof(ID, name) + 2);
-    }
-
-    if (id_restore == NULL) {
-      /* check for a data with the same filename */
-      switch (GS(ID_PT->name)) {
-        case ID_SO: {
-          id_restore = BLI_findstring(lb, ((bSound *)ID_PT)->filepath, offsetof(bSound, filepath));
-          if (id_restore == NULL) {
-            id_restore = BKE_sound_new_file(bmain, ((bSound *)ID_PT)->filepath);
-            (ID_PT)->newid = id_restore; /* reuse next time */
-          }
-          break;
-        }
-        case ID_MC: {
-          id_restore = BLI_findstring(
-              lb, ((MovieClip *)ID_PT)->filepath, offsetof(MovieClip, filepath));
-          if (id_restore == NULL) {
-            id_restore = BKE_movieclip_file_add(bmain, ((MovieClip *)ID_PT)->filepath);
-            (ID_PT)->newid = id_restore; /* reuse next time */
-          }
-          break;
-        }
-        default:
-          break;
-      }
-    }
-
-    /* Replace with pointer to actual data-block. */
-    seqclipboard_ptr_free(bmain, id_pt);
-    ID_PT = id_restore;
-  }
-}
-#undef ID_PT
-
-static void sequence_clipboard_pointers(Main *bmain,
-                                        Sequence *seq,
-                                        void (*callback)(Main *, ID **))
-{
-  callback(bmain, (ID **)&seq->scene);
-  callback(bmain, (ID **)&seq->scene_camera);
-  callback(bmain, (ID **)&seq->clip);
-  callback(bmain, (ID **)&seq->mask);
-  callback(bmain, (ID **)&seq->sound);
-
-  if (seq->type == SEQ_TYPE_TEXT && seq->effectdata) {
-    TextVars *text_data = seq->effectdata;
-    callback(bmain, (ID **)&text_data->text_font);
-  }
-}
-
-/* recursive versions of functions above */
-void BKE_sequencer_base_clipboard_pointers_free(ListBase *seqbase)
-{
-  Sequence *seq;
-  for (seq = seqbase->first; seq; seq = seq->next) {
-    sequence_clipboard_pointers(NULL, seq, seqclipboard_ptr_free);
-    BKE_sequencer_base_clipboard_pointers_free(&seq->seqbase);
-  }
-}
-void BKE_sequencer_base_clipboard_pointers_store(Main *bmain, ListBase *seqbase)
-{
-  Sequence *seq;
-  for (seq = seqbase->first; seq; seq = seq->next) {
-    sequence_clipboard_pointers(bmain, seq, seqclipboard_ptr_store);
-    BKE_sequencer_base_clipboard_pointers_store(bmain, &seq->seqbase);
-  }
-}
-void BKE_sequencer_base_clipboard_pointers_restore(ListBase *seqbase, Main *bmain)
-{
-  Sequence *seq;
-  for (seq = seqbase->first; seq; seq = seq->next) {
-    sequence_clipboard_pointers(bmain, seq, seqclipboard_ptr_restore);
-    BKE_sequencer_base_clipboard_pointers_restore(&seq->seqbase, bmain);
-  }
-}
-
-/* end clipboard pointer mess */
-
-Editing *BKE_sequencer_editing_ensure(Scene *scene)
-{
-  if (scene->ed == NULL) {
-    Editing *ed;
-
-    ed = scene->ed = MEM_callocN(sizeof(Editing), "addseq");
-    ed->seqbasep = &ed->seqbase;
-    ed->cache = NULL;
-    ed->cache_flag = SEQ_CACHE_STORE_FINAL_OUT;
-    ed->cache_flag |= SEQ_CACHE_VIEW_FINAL_OUT;
-    ed->cache_flag |= SEQ_CACHE_VIEW_ENABLE;
-    ed->recycle_max_cost = 10.0f;
-  }
-
-  return scene->ed;
-}
-
-void BKE_sequencer_editing_free(Scene *scene, const bool do_id_user)
-{
-  Editing *ed = scene->ed;
-  Sequence *seq;
-
-  if (ed == NULL) {
-    return;
-  }
-
-  BKE_sequencer_prefetch_free(scene);
-  BKE_sequencer_cache_destruct(scene);
-
-  SEQ_ALL_BEGIN (ed, seq) {
-    /* handle cache freeing above */
-    BKE_sequence_free_ex(scene, seq, false, do_id_user, false);
-  }
-  SEQ_ALL_END;
-
-  BLI_freelistN(&ed->metastack);
-  MEM_freeN(ed);
-
-  scene->ed = NULL;
-}
-
-/*********************** Sequencer color space functions  *************************/
-
-static void sequencer_imbuf_assign_spaces(Scene *scene, ImBuf *ibuf)
-{
-#if 0
-  /* Bute buffer is supposed to be in sequencer working space already. */
-  if (ibuf->rect != NULL) {
-    IMB_colormanagement_assign_rect_colorspace(ibuf, scene->sequencer_colorspace_settings.name);
-  }
-#endif
-  if (ibuf->rect_float != NULL) {
-    IMB_colormanagement_assign_float_colorspace(ibuf, scene->sequencer_colorspace_settings.name);
-  }
-}
-
-void BKE_sequencer_imbuf_to_sequencer_space(Scene *scene, ImBuf *ibuf, bool make_float)
-{
-  /* Early output check: if both buffers are NULL we have nothing to convert. */
-  if (ibuf->rect_float == NULL && ibuf->rect == NULL) {
-    return;
-  }
-  /* Get common conversion settings. */
-  const char *to_colorspace = scene->sequencer_colorspace_settings.name;
-  /* Perform actual conversion logic. */
-  if (ibuf->rect_float == NULL) {
-    /* We are not requested to give float buffer and byte buffer is already
-     * in thee required colorspace. Can skip doing anything here.
-     */
-    const char *from_colorspace = IMB_colormanagement_get_rect_colorspace(ibuf);
-    if (!make_float && STREQ(from_colorspace, to_colorspace)) {
-      return;
-    }
-    if (false) {
-      /* The idea here is to provide as fast playback as possible and
-       * enforcing float buffer here (a) uses more cache memory (b) might
-       * make some other effects slower to apply.
-       *
-       * However, this might also have negative effect by adding weird
-       * artifacts which will then not happen in final render.
-       */
-      IMB_colormanagement_transform_byte_threaded((unsigned char *)ibuf->rect,
-                                                  ibuf->x,
-                                                  ibuf->y,
-                                                  ibuf->channels,
-                                                  from_colorspace,
-                                                  to_colorspace);
-    }
-    else {
-      /* We perform conversion to a float buffer so we don't worry about
-       * precision loss.
-       */
-      imb_addrectfloatImBuf(ibuf);
-      IMB_colormanagement_transform_from_byte_threaded(ibuf->rect_float,
-                                                       (unsigned char *)ibuf->rect,
-                                                       ibuf->x,
-                                                       ibuf->y,
-                                                       ibuf->channels,
-                                                       from_colorspace,
-                                                       to_colorspace);
-      /* We don't need byte buffer anymore. */
-      imb_freerectImBuf(ibuf);
-    }
-  }
-  else {
-    const char *from_colorspace = IMB_colormanagement_get_float_colorspace(ibuf);
-    /* Unknown input color space, can't perform conversion. */
-    if (from_colorspace == NULL || from_colorspace[0] == '\0') {
-      return;
-    }
-    /* We don't want both byte and float buffers around: they'll either run
-     * out of sync or conversion of byte buffer will loose precision in there.
-     */
-    if (ibuf->rect != NULL) {
-      imb_freerectImBuf(ibuf);
-    }
-    IMB_colormanagement_transform_threaded(
-        ibuf->rect_float, ibuf->x, ibuf->y, ibuf->channels, from_colorspace, to_colorspace, true);
-  }
-  sequencer_imbuf_assign_spaces(scene, ibuf);
-}
-
-void BKE_sequencer_imbuf_from_sequencer_space(Scene *scene, ImBuf *ibuf)
-{
-  const char *from_colorspace = scene->sequencer_colorspace_settings.name;
-  const char *to_colorspace = IMB_colormanagement_role_colorspace_name_get(
-      COLOR_ROLE_SCENE_LINEAR);
-
-  if (!ibuf->rect_float) {
-    return;
-  }
-
-  if (to_colorspace && to_colorspace[0] != '\0') {
-    IMB_colormanagement_transform_threaded(
-        ibuf->rect_float, ibuf->x, ibuf->y, ibuf->channels, from_colorspace, to_colorspace, true);
-    IMB_colormanagement_assign_float_colorspace(ibuf, to_colorspace);
-  }
-}
-
-void BKE_sequencer_pixel_from_sequencer_space_v4(struct Scene *scene, float pixel[4])
-{
-  const char *from_colorspace = scene->sequencer_colorspace_settings.name;
-  const char *to_colorspace = IMB_colormanagement_role_colorspace_name_get(
-      COLOR_ROLE_SCENE_LINEAR);
-
-  if (to_colorspace && to_colorspace[0] != '\0') {
-    IMB_colormanagement_transform_v4(pixel, from_colorspace, to_colorspace);
-  }
-  else {
-    /* if no color management enables fallback to legacy conversion */
-    srgb_to_linearrgb_v4(pixel, pixel);
-  }
-}
-
-/*********************** sequencer pipeline functions *************************/
-
-void BKE_sequencer_new_render_data(Main *bmain,
-                                   struct Depsgraph *depsgraph,
-                                   Scene *scene,
-                                   int rectx,
-                                   int recty,
-                                   int preview_render_size,
-                                   int for_render,
-                                   SeqRenderData *r_context)
-{
-  r_context->bmain = bmain;
-  r_context->depsgraph = depsgraph;
-  r_context->scene = scene;
-  r_context->rectx = rectx;
-  r_context->recty = recty;
-  r_context->preview_render_size = preview_render_size;
-  r_context->for_render = for_render;
-  r_context->motion_blur_samples = 0;
-  r_context->motion_blur_shutter = 0;
-  r_context->skip_cache = false;
-  r_context->is_proxy_render = false;
-  r_context->view_id = 0;
-  r_context->gpu_offscreen = NULL;
-  r_context->task_id = SEQ_TASK_MAIN_RENDER;
-  r_context->is_prefetch_render = false;
-}
-
-/* ************************* iterator ************************** */
-/* *************** (replaces old WHILE_SEQ) ********************* */
-/* **************** use now SEQ_ALL_BEGIN () SEQ_ALL_END ***************** */
-
-/* sequence strip iterator:
- * - builds a full array, recursively into meta strips
- */
-
-static void seq_count(ListBase *seqbase, int *tot)
-{
-  Sequence *seq;
-
-  for (seq = seqbase->first; seq; seq = seq->next) {
-    (*tot)++;
-
-    if (seq->seqbase.first) {
-      seq_count(&seq->seqbase, tot);
-    }
-  }
-}
-
-static void seq_build_array(ListBase *seqbase, Sequence ***array, int depth)
-{
-  Sequence *seq;
-
-  for (seq = seqbase->first; seq; seq = seq->next) {
-    seq->depth = depth;
-
-    if (seq->seqbase.first) {
-      seq_build_array(&seq->seqbase, array, depth + 1);
-    }
-
-    **array = seq;
-    (*array)++;
-  }
-}
-
-static void seq_array(Editing *ed,
-                      Sequence ***seqarray,
-                      int *tot,
-                      const bool use_current_sequences)
-{
-  Sequence **array;
-
-  *seqarray = NULL;
-  *tot = 0;
-
-  if (ed == NULL) {
-    return;
-  }
-
-  if (use_current_sequences) {
-    seq_count(ed->seqbasep, tot);
-  }
-  else {
-    seq_count(&ed->seqbase, tot);
-  }
-
-  if (*tot == 0) {
-    return;
-  }
-
-  *seqarray = array = MEM_mallocN(sizeof(Sequence *) * (*tot), "SeqArray");
-  if (use_current_sequences) {
-    seq_build_array(ed->seqbasep, &array, 0);
-  }
-  else {
-    seq_build_array(&ed->seqbase, &array, 0);
-  }
-}
-
-void BKE_sequence_iterator_begin(Editing *ed, SeqIterator *iter, const bool use_current_sequences)
-{
-  memset(iter, 0, sizeof(*iter));
-  seq_array(ed, &iter->array, &iter->tot, use_current_sequences);
-
-  if (iter->tot) {
-    iter->cur = 0;
-    iter->seq = iter->array[iter->cur];
-    iter->valid = 1;
-  }
-}
-
-void BKE_sequence_iterator_next(SeqIterator *iter)
-{
-  if (++iter->cur < iter->tot) {
-    iter->seq = iter->array[iter->cur];
-  }
-  else {
-    iter->valid = 0;
-  }
-}
-
-void BKE_sequence_iterator_end(SeqIterator *iter)
-{
-  if (iter->array) {
-    MEM_freeN(iter->array);
-  }
-
-  iter->valid = 0;
-}
-
-static int metaseq_start(Sequence *metaseq)
-{
-  return metaseq->start + metaseq->startofs;
-}
-
-static int metaseq_end(Sequence *metaseq)
-{
-  return metaseq->start + metaseq->len - metaseq->endofs;
-}
-
-static void seq_update_sound_bounds_recursive_impl(Scene *scene,
-                                                   Sequence *metaseq,
-                                                   int start,
-                                                   int end)
-{
-  Sequence *seq;
-
-  /* for sound we go over full meta tree to update bounds of the sound strips,
-   * since sound is played outside of evaluating the imbufs, */
-  for (seq = metaseq->seqbase.first; seq; seq = seq->next) {
-    if (seq->type == SEQ_TYPE_META) {
-      seq_update_sound_bounds_recursive_impl(
-          scene, seq, max_ii(start, metaseq_start(seq)), min_ii(end, metaseq_end(seq)));
-    }
-    else if (ELEM(seq->type, SEQ_TYPE_SOUND_RAM, SEQ_TYPE_SCENE)) {
-      if (seq->scene_sound) {
-        int startofs = seq->startofs;
-        int endofs = seq->endofs;
-        if (seq->startofs + seq->start < start) {
-          startofs = start - seq->start;
-        }
-
-        if (seq->start + seq->len - seq->endofs > end) {
-          endofs = seq->start + seq->len - end;
-        }
-
-        BKE_sound_move_scene_sound(scene,
-                                   seq->scene_sound,
-                                   seq->start + startofs,
-                                   seq->start + seq->len - endofs,
-                                   startofs + seq->anim_startofs);
-      }
-    }
-  }
-}
-
-static void seq_update_sound_bounds_recursive(Scene *scene, Sequence *metaseq)
-{
-  seq_update_sound_bounds_recursive_impl(
-      scene, metaseq, metaseq_start(metaseq), metaseq_end(metaseq));
-}
-
-void BKE_sequence_calc_disp(Scene *scene, Sequence *seq)
-{
-  if (seq->startofs && seq->startstill) {
-    seq->startstill = 0;
-  }
-  if (seq->endofs && seq->endstill) {
-    seq->endstill = 0;
-  }
-
-  seq->startdisp = seq->start + seq->startofs - seq->startstill;
-  seq->enddisp = seq->start + seq->len - seq->endofs + seq->endstill;
-
-  if (seq->type == SEQ_TYPE_META) {
-    seq_update_sound_bounds_recursive(scene, seq);
-  }
-}
-
-void BKE_sequence_calc(Scene *scene, Sequence *seq)
-{
-  Sequence *seqm;
-  int min, max;
-
-  /* check all metas recursively */
-  seqm = seq->seqbase.first;
-  while (seqm) {
-    if (seqm->seqbase.first) {
-      BKE_sequence_calc(scene, seqm);
-    }
-    seqm = seqm->next;
-  }
-
-  /* effects and meta: automatic start and end */
-  if (seq->type & SEQ_TYPE_EFFECT) {
-    if (seq->seq1) {
-      seq->startofs = seq->endofs = seq->startstill = seq->endstill = 0;
-      if (seq->seq3) {
-        seq->start = seq->startdisp = max_iii(
-            seq->seq1->startdisp, seq->seq2->startdisp, seq->seq3->startdisp);
-        seq->enddisp = min_iii(seq->seq1->enddisp, seq->seq2->enddisp, seq->seq3->enddisp);
-      }
-      else if (seq->seq2) {
-        seq->start = seq->startdisp = max_ii(seq->seq1->startdisp, seq->seq2->startdisp);
-        seq->enddisp = min_ii(seq->seq1->enddisp, seq->seq2->enddisp);
-      }
-      else {
-        seq->start = seq->startdisp = seq->seq1->startdisp;
-        seq->enddisp = seq->seq1->enddisp;
-      }
-      /* we cant help if strips don't overlap, it wont give useful results.
-       * but at least ensure 'len' is never negative which causes bad bugs elsewhere. */
-      if (seq->enddisp < seq->startdisp) {
-        /* simple start/end swap */
-        seq->start = seq->enddisp;
-        seq->enddisp = seq->startdisp;
-        seq->startdisp = seq->start;
-        seq->flag |= SEQ_INVALID_EFFECT;
-      }
-      else {
-        seq->flag &= ~SEQ_INVALID_EFFECT;
-      }
-
-      seq->len = seq->enddisp - seq->startdisp;
-    }
-    else {
-      BKE_sequence_calc_disp(scene, seq);
-    }
-  }
-  else {
-    if (seq->type == SEQ_TYPE_META) {
-      seqm = seq->seqbase.first;
-      if (seqm) {
-        min = MAXFRAME * 2;
-        max = -MAXFRAME * 2;
-        while (seqm) {
-          if (seqm->startdisp < min) {
-            min = seqm->startdisp;
-          }
-          if (seqm->enddisp > max) {
-            max = seqm->enddisp;
-          }
-          seqm = seqm->next;
-        }
-        seq->start = min + seq->anim_startofs;
-        seq->len = max - min;
-        seq->len -= seq->anim_startofs;
-        seq->len -= seq->anim_endofs;
-      }
-      seq_update_sound_bounds_recursive(scene, seq);
-    }
-    BKE_sequence_calc_disp(scene, seq);
-  }
-}
-
-static void seq_multiview_name(Scene *scene,
-                               const int view_id,
-                               const char *prefix,
-                               const char *ext,
-                               char *r_path,
-                               size_t r_size)
-{
-  const char *suffix = BKE_scene_multiview_view_id_suffix_get(&scene->r, view_id);
-  BLI_assert(ext != NULL && suffix != NULL && prefix != NULL);
-  BLI_snprintf(r_path, r_size, "%s%s%s", prefix, suffix, ext);
-}
-
-/* note: caller should run BKE_sequence_calc(scene, seq) after */
-void BKE_sequence_reload_new_file(Main *bmain, Scene *scene, Sequence *seq, const bool lock_range)
-{
-  char path[FILE_MAX];
-  int prev_startdisp = 0, prev_enddisp = 0;
-  /* note: don't rename the strip, will break animation curves */
-
-  if (ELEM(seq->type,
-           SEQ_TYPE_MOVIE,
-           SEQ_TYPE_IMAGE,
-           SEQ_TYPE_SOUND_RAM,
-           SEQ_TYPE_SCENE,
-           SEQ_TYPE_META,
-           SEQ_TYPE_MOVIECLIP,
-           SEQ_TYPE_MASK) == 0) {
-    return;
-  }
-
-  if (lock_range) {
-    /* keep so we don't have to move the actual start and end points (only the data) */
-    BKE_sequence_calc_disp(scene, seq);
-    prev_startdisp = seq->startdisp;
-    prev_enddisp = seq->enddisp;
-  }
-
-  switch (seq->type) {
-    case SEQ_TYPE_IMAGE: {
-      /* Hack? */
-      size_t olen = MEM_allocN_len(seq->strip->stripdata) / sizeof(StripElem);
-
-      seq->len = olen;
-      seq->len -= seq->anim_startofs;
-      seq->len -= seq->anim_endofs;
-      if (seq->len < 0) {
-        seq->len = 0;
-      }
-      break;
-    }
-    case SEQ_TYPE_MOVIE: {
-      StripAnim *sanim;
-      bool is_multiview_loaded = false;
-      const bool is_multiview = (seq->flag & SEQ_USE_VIEWS) != 0 &&
-                                (scene->r.scemode & R_MULTIVIEW) != 0;
-
-      BLI_join_dirfile(path, sizeof(path), seq->strip->dir, seq->strip->stripdata->name);
-      BLI_path_abs(path, BKE_main_blendfile_path_from_global());
-
-      BKE_sequence_free_anim(seq);
-
-      if (is_multiview && (seq->views_format == R_IMF_VIEWS_INDIVIDUAL)) {
-        char prefix[FILE_MAX];
-        const char *ext = NULL;
-        const int totfiles = seq_num_files(scene, seq->views_format, true);
-        int i = 0;
-
-        BKE_scene_multiview_view_prefix_get(scene, path, prefix, &ext);
-
-        if (prefix[0] != '\0') {
-          for (i = 0; i < totfiles; i++) {
-            struct anim *anim;
-            char str[FILE_MAX];
-
-            seq_multiview_name(scene, i, prefix, ext, str, FILE_MAX);
-            anim = openanim(str,
-                            IB_rect | ((seq->flag & SEQ_FILTERY) ? IB_animdeinterlace : 0),
-                            seq->streamindex,
-                            seq->strip->colorspace_settings.name);
-
-            if (anim) {
-              seq_anim_add_suffix(scene, anim, i);
-              sanim = MEM_mallocN(sizeof(StripAnim), "Strip Anim");
-              BLI_addtail(&seq->anims, sanim);
-              sanim->anim = anim;
-            }
-          }
-          is_multiview_loaded = true;
-        }
-      }
-
-      if (is_multiview_loaded == false) {
-        struct anim *anim;
-        anim = openanim(path,
-                        IB_rect | ((seq->flag & SEQ_FILTERY) ? IB_animdeinterlace : 0),
-                        seq->streamindex,
-                        seq->strip->colorspace_settings.name);
-        if (anim) {
-          sanim = MEM_mallocN(sizeof(StripAnim), "Strip Anim");
-          BLI_addtail(&seq->anims, sanim);
-          sanim->anim = anim;
-        }
-      }
-
-      /* use the first video as reference for everything */
-      sanim = seq->anims.first;
-
-      if ((!sanim) || (!sanim->anim)) {
-        return;
-      }
-
-      IMB_anim_load_metadata(sanim->anim);
-
-      seq->len = IMB_anim_get_duration(
-          sanim->anim, seq->strip->proxy ? seq->strip->proxy->tc : IMB_TC_RECORD_RUN);
-
-      seq->anim_preseek = IMB_anim_get_preseek(sanim->anim);
-
-      seq->len -= seq->anim_startofs;
-      seq->len -= seq->anim_endofs;
-      if (seq->len < 0) {
-        seq->len = 0;
-      }
-      break;
-    }
-    case SEQ_TYPE_MOVIECLIP:
-      if (seq->clip == NULL) {
-        return;
-      }
-
-      seq->len = BKE_movieclip_get_duration(seq->clip);
-
-      seq->len -= seq->anim_startofs;
-      seq->len -= seq->anim_endofs;
-      if (seq->len < 0) {
-        seq->len = 0;
-      }
-      break;
-    case SEQ_TYPE_MASK:
-      if (seq->mask == NULL) {
-        return;
-      }
-      seq->len = BKE_mask_get_duration(seq->mask);
-      seq->len -= seq->anim_startofs;
-      seq->len -= seq->anim_endofs;
-      if (seq->len < 0) {
-        seq->len = 0;
-      }
-      break;
-    case SEQ_TYPE_SOUND_RAM:
-#ifdef WITH_AUDASPACE
-      if (!seq->sound) {
-        return;
-      }
-      seq->len = ceil((double)BKE_sound_get_length(bmain, seq->sound) * FPS);
-      seq->len -= seq->anim_startofs;
-      seq->len -= seq->anim_endofs;
-      if (seq->len < 0) {
-        seq->len = 0;
-      }
-#else
-      UNUSED_VARS(bmain);
-      return;
-#endif
-      break;
-    case SEQ_TYPE_SCENE: {
-      seq->len = (seq->scene) ? seq->scene->r.efra - seq->scene->r.sfra + 1 : 0;
-      seq->len -= seq->anim_startofs;
-      seq->len -= seq->anim_endofs;
-      if (seq->len < 0) {
-        seq->len = 0;
-      }
-      break;
-    }
-  }
-
-  free_proxy_seq(seq);
-
-  if (lock_range) {
-    BKE_sequence_tx_set_final_left(seq, prev_startdisp);
-    BKE_sequence_tx_set_final_right(seq, prev_enddisp);
-    BKE_sequence_single_fix(seq);
-  }
-
-  BKE_sequence_calc(scene, seq);
-}
-
-void BKE_sequence_movie_reload_if_needed(struct Main *bmain,
-                                         struct Scene *scene,
-                                         struct Sequence *seq,
-                                         bool *r_was_reloaded,
-                                         bool *r_can_produce_frames)
-{
-  BLI_assert(seq->type == SEQ_TYPE_MOVIE ||
-             !"This function is only implemented for movie strips.");
-
-  bool must_reload = false;
-
-  /* The Sequence struct allows for multiple anim structs to be associated with one strip. This
-   * function will return true only if there is at least one 'anim' AND all anims can produce
-   * frames. */
-
-  if (BLI_listbase_is_empty(&seq->anims)) {
-    /* No anim present, so reloading is always necessary. */
-    must_reload = true;
-  }
-  else {
-    LISTBASE_FOREACH (StripAnim *, sanim, &seq->anims) {
-      if (!IMB_anim_can_produce_frames(sanim->anim)) {
-        /* Anim cannot produce frames, try reloading. */
-        must_reload = true;
-        break;
-      }
-    };
-  }
-
-  if (!must_reload) {
-    /* There are one or more anims, and all can produce frames. */
-    *r_was_reloaded = false;
-    *r_can_produce_frames = true;
-    return;
-  }
-
-  BKE_sequence_reload_new_file(bmain, scene, seq, true);
-  *r_was_reloaded = true;
-
-  if (BLI_listbase_is_empty(&seq->anims)) {
-    /* No anims present after reloading => no frames can be produced. */
-    *r_can_produce_frames = false;
-    return;
-  }
-
-  /* Check if there are still anims that cannot produce frames. */
-  LISTBASE_FOREACH (StripAnim *, sanim, &seq->anims) {
-    if (!IMB_anim_can_produce_frames(sanim->anim)) {
-      /* There still is an anim that cannot produce frames. */
-      *r_can_produce_frames = false;
-      return;
-    }
-  };
-
-  /* There are one or more anims, and all can produce frames. */
-  *r_can_produce_frames = true;
-}
-
-void BKE_sequencer_sort(Scene *scene)
-{
-  /* all strips together per kind, and in order of y location ("machine") */
-  ListBase seqbase, effbase;
-  Editing *ed = BKE_sequencer_editing_get(scene, false);
-  Sequence *seq, *seqt;
-
-  if (ed == NULL) {
-    return;
-  }
-
-  BLI_listbase_clear(&seqbase);
-  BLI_listbase_clear(&effbase);
-
-  while ((seq = BLI_pophead(ed->seqbasep))) {
-
-    if (seq->type & SEQ_TYPE_EFFECT) {
-      seqt = effbase.first;
-      while (seqt) {
-        if (seqt->machine >= seq->machine) {
-          BLI_insertlinkbefore(&effbase, seqt, seq);
-          break;
-        }
-        seqt = seqt->next;
-      }
-      if (seqt == NULL) {
-        BLI_addtail(&effbase, seq);
-      }
-    }
-    else {
-      seqt = seqbase.first;
-      while (seqt) {
-        if (seqt->machine >= seq->machine) {
-          BLI_insertlinkbefore(&seqbase, seqt, seq);
-          break;
-        }
-        seqt = seqt->next;
-      }
-      if (seqt == NULL) {
-        BLI_addtail(&seqbase, seq);
-      }
-    }
-  }
-
-  BLI_movelisttolist(&seqbase, &effbase);
-  *(ed->seqbasep) = seqbase;
-}
-
-/** Comparison function suitable to be used with BLI_listbase_sort()... */
-int BKE_sequencer_cmp_time_startdisp(const void *a, const void *b)
-{
-  const Sequence *seq_a = a;
-  const Sequence *seq_b = b;
-
-  return (seq_a->startdisp > seq_b->startdisp);
-}
-
-static int clear_scene_in_allseqs_fn(Sequence *seq, void *arg_pt)
-{
-  if (seq->scene == (Scene *)arg_pt) {
-    seq->scene = NULL;
-  }
-  return 1;
-}
-
-void BKE_sequencer_clear_scene_in_allseqs(Main *bmain, Scene *scene)
-{
-  Scene *scene_iter;
-
-  /* when a scene is deleted: test all seqs */
-  for (scene_iter = bmain->scenes.first; scene_iter; scene_iter = scene_iter->id.next) {
-    if (scene_iter != scene && scene_iter->ed) {
-      BKE_sequencer_base_recursive_apply(
-          &scene_iter->ed->seqbase, clear_scene_in_allseqs_fn, scene);
-    }
-  }
-}
-
-typedef struct SeqUniqueInfo {
-  Sequence *seq;
-  char name_src[SEQ_NAME_MAXSTR];
-  char name_dest[SEQ_NAME_MAXSTR];
-  int count;
-  int match;
-} SeqUniqueInfo;
-
-static void seqbase_unique_name(ListBase *seqbasep, SeqUniqueInfo *sui)
-{
-  Sequence *seq;
-  for (seq = seqbasep->first; seq; seq = seq->next) {
-    if ((sui->seq != seq) && STREQ(sui->name_dest, seq->name + 2)) {
-      /* SEQ_NAME_MAXSTR -4 for the number, -1 for \0, - 2 for r_prefix */
-      BLI_snprintf(sui->name_dest,
-                   sizeof(sui->name_dest),
-                   "%.*s.%03d",
-                   SEQ_NAME_MAXSTR - 4 - 1 - 2,
-                   sui->name_src,
-                   sui->count++);
-      sui->match = 1; /* be sure to re-scan */
-    }
-  }
-}
-
-static int seqbase_unique_name_recursive_fn(Sequence *seq, void *arg_pt)
-{
-  if (seq->seqbase.first) {
-    seqbase_unique_name(&seq->seqbase, (SeqUniqueInfo *)arg_pt);
-  }
-  return 1;
-}
-
-void BKE_sequence_base_unique_name_recursive(ListBase *seqbasep, Sequence *seq)
-{
-  SeqUniqueInfo sui;
-  char *dot;
-  sui.seq = seq;
-  BLI_strncpy(sui.name_src, seq->name + 2, sizeof(sui.name_src));
-  BLI_strncpy(sui.name_dest, seq->name + 2, sizeof(sui.name_dest));
-
-  sui.count = 1;
-  sui.match = 1; /* assume the worst to start the loop */
-
-  /* Strip off the suffix */
-  if ((dot = strrchr(sui.name_src, '.'))) {
-    *dot = '\0';
-    dot++;
-
-    if (*dot) {
-      sui.count = atoi(dot) + 1;
-    }
-  }
-
-  while (sui.match) {
-    sui.match = 0;
-    seqbase_unique_name(seqbasep, &sui);
-    BKE_sequencer_base_recursive_apply(seqbasep, seqbase_unique_name_recursive_fn, &sui);
-  }
-
-  BLI_strncpy(seq->name + 2, sui.name_dest, sizeof(seq->name) - 2);
-}
-
-static const char *give_seqname_by_type(int type)
-{
-  switch (type) {
-    case SEQ_TYPE_META:
-      return "Meta";
-    case SEQ_TYPE_IMAGE:
-      return "Image";
-    case SEQ_TYPE_SCENE:
-      return "Scene";
-    case SEQ_TYPE_MOVIE:
-      return "Movie";
-    case SEQ_TYPE_MOVIECLIP:
-      return "Clip";
-    case SEQ_TYPE_MASK:
-      return "Mask";
-    case SEQ_TYPE_SOUND_RAM:
-      return "Audio";
-    case SEQ_TYPE_CROSS:
-      return "Cross";
-    case SEQ_TYPE_GAMCROSS:
-      return "Gamma Cross";
-    case SEQ_TYPE_ADD:
-      return "Add";
-    case SEQ_TYPE_SUB:
-      return "Sub";
-    case SEQ_TYPE_MUL:
-      return "Mul";
-    case SEQ_TYPE_ALPHAOVER:
-      return "Alpha Over";
-    case SEQ_TYPE_ALPHAUNDER:
-      return "Alpha Under";
-    case SEQ_TYPE_OVERDROP:
-      return "Over Drop";
-    case SEQ_TYPE_COLORMIX:
-      return "Color Mix";
-    case SEQ_TYPE_WIPE:
-      return "Wipe";
-    case SEQ_TYPE_GLOW:
-      return "Glow";
-    case SEQ_TYPE_TRANSFORM:
-      return "Transform";
-    case SEQ_TYPE_COLOR:
-      return "Color";
-    case SEQ_TYPE_MULTICAM:
-      return "Multicam";
-    case SEQ_TYPE_ADJUSTMENT:
-      return "Adjustment";
-    case SEQ_TYPE_SPEED:
-      return "Speed";
-    case SEQ_TYPE_GAUSSIAN_BLUR:
-      return "Gaussian Blur";
-    case SEQ_TYPE_TEXT:
-      return "Text";
-    default:
-      return NULL;
-  }
-}
-
-const char *BKE_sequence_give_name(Sequence *seq)
-{
-  const char *name = give_seqname_by_type(seq->type);
-
-  if (!name) {
-    if (!(seq->type & SEQ_TYPE_EFFECT)) {
-      return seq->strip->dir;
-    }
-
-    return "Effect";
-  }
-  return name;
-}
-
-ListBase *BKE_sequence_seqbase_get(Sequence *seq, int *r_offset)
-{
-  ListBase *seqbase = NULL;
-
-  switch (seq->type) {
-    case SEQ_TYPE_META: {
-      seqbase = &seq->seqbase;
-      *r_offset = seq->start;
-      break;
-    }
-    case SEQ_TYPE_SCENE: {
-      if (seq->flag & SEQ_SCENE_STRIPS && seq->scene) {
-        Editing *ed = BKE_sequencer_editing_get(seq->scene, false);
-        if (ed) {
-          seqbase = &ed->seqbase;
-          *r_offset = seq->scene->r.sfra;
-        }
-      }
-      break;
-    }
-  }
-
-  return seqbase;
-}
-
-/*********************** DO THE SEQUENCE *************************/
-
-static void multibuf(ImBuf *ibuf, const float fmul)
-{
-  char *rt;
-  float *rt_float;
-
-  int a;
-
-  rt = (char *)ibuf->rect;
-  rt_float = ibuf->rect_float;
-
-  if (rt) {
-    const int imul = (int)(256.0f * fmul);
-    a = ibuf->x * ibuf->y;
-    while (a--) {
-      rt[0] = min_ii((imul * rt[0]) >> 8, 255);
-      rt[1] = min_ii((imul * rt[1]) >> 8, 255);
-      rt[2] = min_ii((imul * rt[2]) >> 8, 255);
-      rt[3] = min_ii((imul * rt[3]) >> 8, 255);
-
-      rt += 4;
-    }
-  }
-  if (rt_float) {
-    a = ibuf->x * ibuf->y;
-    while (a--) {
-      rt_float[0] *= fmul;
-      rt_float[1] *= fmul;
-      rt_float[2] *= fmul;
-      rt_float[3] *= fmul;
-
-      rt_float += 4;
-    }
-  }
-}
-
-float BKE_sequencer_give_stripelem_index(Sequence *seq, float cfra)
-{
-  float nr;
-  int sta = seq->start;
-  int end = seq->start + seq->len - 1;
-
-  if (seq->type & SEQ_TYPE_EFFECT) {
-    end = seq->enddisp;
-  }
-
-  if (end < sta) {
-    return -1;
-  }
-
-  if (seq->flag & SEQ_REVERSE_FRAMES) {
-    /*reverse frame in this sequence */
-    if (cfra <= sta) {
-      nr = end - sta;
-    }
-    else if (cfra >= end) {
-      nr = 0;
-    }
-    else {
-      nr = end - cfra;
-    }
-  }
-  else {
-    if (cfra <= sta) {
-      nr = 0;
-    }
-    else if (cfra >= end) {
-      nr = end - sta;
-    }
-    else {
-      nr = cfra - sta;
-    }
-  }
-
-  if (seq->strobe < 1.0f) {
-    seq->strobe = 1.0f;
-  }
-
-  if (seq->strobe > 1.0f) {
-    nr -= fmodf((double)nr, (double)seq->strobe);
-  }
-
-  return nr;
-}
-
-StripElem *BKE_sequencer_give_stripelem(Sequence *seq, int cfra)
-{
-  StripElem *se = seq->strip->stripdata;
-
-  if (seq->type == SEQ_TYPE_IMAGE) {
-    /* only IMAGE strips use the whole array, MOVIE strips use only the first element,
-     * all other strips don't use this...
-     */
-
-    int nr = (int)BKE_sequencer_give_stripelem_index(seq, cfra);
-
-    if (nr == -1 || se == NULL) {
-      return NULL;
-    }
-
-    se += nr + seq->anim_startofs;
-  }
-  return se;
-}
-
-static int evaluate_seq_frame_gen(Sequence **seq_arr, ListBase *seqbase, int cfra, int chanshown)
-{
-  /* Use arbitrary sized linked list, the size could be over MAXSEQ. */
-  LinkNodePair effect_inputs = {NULL, NULL};
-  int totseq = 0;
-
-  memset(seq_arr, 0, sizeof(Sequence *) * (MAXSEQ + 1));
-
-  LISTBASE_FOREACH (Sequence *, seq, seqbase) {
-    if ((seq->startdisp <= cfra) && (seq->enddisp > cfra)) {
-      if ((seq->type & SEQ_TYPE_EFFECT) && !(seq->flag & SEQ_MUTE)) {
-
-        if (seq->seq1) {
-          BLI_linklist_append_alloca(&effect_inputs, seq->seq1);
-        }
-
-        if (seq->seq2) {
-          BLI_linklist_append_alloca(&effect_inputs, seq->seq2);
-        }
-
-        if (seq->seq3) {
-          BLI_linklist_append_alloca(&effect_inputs, seq->seq3);
-        }
-      }
-
-      seq_arr[seq->machine] = seq;
-      totseq++;
-    }
-  }
-
-  /* Drop strips which are used for effect inputs, we don't want
-   * them to blend into render stack in any other way than effect
-   * string rendering. */
-  for (LinkNode *seq_item = effect_inputs.list; seq_item; seq_item = seq_item->next) {
-    Sequence *seq = seq_item->link;
-    /* It's possible that effect strip would be placed to the same
-     * 'machine' as it's inputs. We don't want to clear such strips
-     * from the stack. */
-    if (seq_arr[seq->machine] && seq_arr[seq->machine]->type & SEQ_TYPE_EFFECT) {
-      continue;
-    }
-    /* If we're shown a specified channel, then we want to see the strips
-     * which belongs to this machine. */
-    if (chanshown != 0 && chanshown <= seq->machine) {
-      continue;
-    }
-    seq_arr[seq->machine] = NULL;
-  }
-
-  return totseq;
-}
-
-int BKE_sequencer_evaluate_frame(Scene *scene, int cfra)
-{
-  Editing *ed = BKE_sequencer_editing_get(scene, false);
-  Sequence *seq_arr[MAXSEQ + 1];
-
-  if (ed == NULL) {
-    return 0;
-  }
-
-  return evaluate_seq_frame_gen(seq_arr, ed->seqbasep, cfra, 0);
-}
-
-static bool video_seq_is_rendered(Sequence *seq)
-{
-  return (seq && !(seq->flag & SEQ_MUTE) && seq->type != SEQ_TYPE_SOUND_RAM);
-}
-
-int BKE_sequencer_get_shown_sequences(ListBase *seqbasep,
-                                      int cfra,
-                                      int chanshown,
-                                      Sequence **seq_arr_out)
-{
-  Sequence *seq_arr[MAXSEQ + 1];
-  int b = chanshown;
-  int cnt = 0;
-
-  if (b > MAXSEQ) {
-    return 0;
-  }
-
-  if (evaluate_seq_frame_gen(seq_arr, seqbasep, cfra, chanshown)) {
-    if (b == 0) {
-      b = MAXSEQ;
-    }
-    for (; b > 0; b--) {
-      if (video_seq_is_rendered(seq_arr[b])) {
-        break;
-      }
-    }
-  }
-
-  chanshown = b;
-
-  for (; b > 0; b--) {
-    if (video_seq_is_rendered(seq_arr[b])) {
-      if (seq_arr[b]->blend_mode == SEQ_BLEND_REPLACE) {
-        break;
-      }
-    }
-  }
-
-  for (; b <= chanshown && b >= 0; b++) {
-    if (video_seq_is_rendered(seq_arr[b])) {
-      seq_arr_out[cnt++] = seq_arr[b];
-    }
-  }
-
-  return cnt;
-}
-
-/*********************** proxy management *************************/
-
-typedef struct SeqIndexBuildContext {
-  struct IndexBuildContext *index_context;
-
-  int tc_flags;
-  int size_flags;
-  int quality;
-  bool overwrite;
-  int view_id;
-
-  Main *bmain;
-  Depsgraph *depsgraph;
-  Scene *scene;
-  Sequence *seq, *orig_seq;
-} SeqIndexBuildContext;
-
-#define PROXY_MAXFILE (2 * FILE_MAXDIR + FILE_MAXFILE)
-
-static IMB_Proxy_Size seq_rendersize_to_proxysize(int render_size)
-{
-  switch (render_size) {
-    case SEQ_RENDER_SIZE_PROXY_25:
-      return IMB_PROXY_25;
-    case SEQ_RENDER_SIZE_PROXY_50:
-      return IMB_PROXY_50;
-    case SEQ_RENDER_SIZE_PROXY_75:
-      return IMB_PROXY_75;
-    case SEQ_RENDER_SIZE_PROXY_100:
-      return IMB_PROXY_100;
-  }
-  return IMB_PROXY_NONE;
-}
-
-double BKE_sequencer_rendersize_to_scale_factor(int render_size)
-{
-  switch (render_size) {
-    case SEQ_RENDER_SIZE_PROXY_25:
-      return 0.25;
-    case SEQ_RENDER_SIZE_PROXY_50:
-      return 0.50;
-    case SEQ_RENDER_SIZE_PROXY_75:
-      return 0.75;
-  }
-  return 1.0;
-}
-
-/* the number of files will vary according to the stereo format */
-static int seq_num_files(Scene *scene, char views_format, const bool is_multiview)
-{
-  if (!is_multiview) {
-    return 1;
-  }
-  if (views_format == R_IMF_VIEWS_STEREO_3D) {
-    return 1;
-  }
-  /* R_IMF_VIEWS_INDIVIDUAL */
-
-  return BKE_scene_multiview_num_views_get(&scene->r);
-}
-
-static void seq_proxy_index_dir_set(struct anim *anim, const char *base_dir)
-{
-  char dir[FILE_MAX];
-  char fname[FILE_MAXFILE];
-
-  IMB_anim_get_fname(anim, fname, FILE_MAXFILE);
-  BLI_strncpy(dir, base_dir, sizeof(dir));
-  BLI_path_append(dir, sizeof(dir), fname);
-  IMB_anim_set_index_dir(anim, dir);
-}
-
-static void seq_open_anim_file(Scene *scene, Sequence *seq, bool openfile)
-{
-  char dir[FILE_MAX];
-  char name[FILE_MAX];
-  StripProxy *proxy;
-  bool use_proxy;
-  bool is_multiview_loaded = false;
-  Editing *ed = scene->ed;
-  const bool is_multiview = (seq->flag & SEQ_USE_VIEWS) != 0 &&
-                            (scene->r.scemode & R_MULTIVIEW) != 0;
-
-  if ((seq->anims.first != NULL) && (((StripAnim *)seq->anims.first)->anim != NULL)) {
-    return;
-  }
-
-  /* reset all the previously created anims */
-  BKE_sequence_free_anim(seq);
-
-  BLI_join_dirfile(name, sizeof(name), seq->strip->dir, seq->strip->stripdata->name);
-  BLI_path_abs(name, BKE_main_blendfile_path_from_global());
-
-  proxy = seq->strip->proxy;
-
-  use_proxy = proxy && ((proxy->storage & SEQ_STORAGE_PROXY_CUSTOM_DIR) != 0 ||
-                        (ed->proxy_storage == SEQ_EDIT_PROXY_DIR_STORAGE));
-
-  if (use_proxy) {
-    if (ed->proxy_storage == SEQ_EDIT_PROXY_DIR_STORAGE) {
-      if (ed->proxy_dir[0] == 0) {
-        BLI_strncpy(dir, "//BL_proxy", sizeof(dir));
-      }
-      else {
-        BLI_strncpy(dir, ed->proxy_dir, sizeof(dir));
-      }
-    }
-    else {
-      BLI_strncpy(dir, seq->strip->proxy->dir, sizeof(dir));
-    }
-    BLI_path_abs(dir, BKE_main_blendfile_path_from_global());
-  }
-
-  if (is_multiview && seq->views_format == R_IMF_VIEWS_INDIVIDUAL) {
-    int totfiles = seq_num_files(scene, seq->views_format, true);
-    char prefix[FILE_MAX];
-    const char *ext = NULL;
-    int i;
-
-    BKE_scene_multiview_view_prefix_get(scene, name, prefix, &ext);
-
-    if (prefix[0] != '\0') {
-      for (i = 0; i < totfiles; i++) {
-        const char *suffix = BKE_scene_multiview_view_id_suffix_get(&scene->r, i);
-        char str[FILE_MAX];
-        StripAnim *sanim = MEM_mallocN(sizeof(StripAnim), "Strip Anim");
-
-        BLI_addtail(&seq->anims, sanim);
-
-        BLI_snprintf(str, sizeof(str), "%s%s%s", prefix, suffix, ext);
-
-        if (openfile) {
-          sanim->anim = openanim(str,
-                                 IB_rect | ((seq->flag & SEQ_FILTERY) ? IB_animdeinterlace : 0),
-                                 seq->streamindex,
-                                 seq->strip->colorspace_settings.name);
-        }
-        else {
-          sanim->anim = openanim_noload(str,
-                                        IB_rect |
-                                            ((seq->flag & SEQ_FILTERY) ? IB_animdeinterlace : 0),
-                                        seq->streamindex,
-                                        seq->strip->colorspace_settings.name);
-        }
-
-        if (sanim->anim) {
-          /* we already have the suffix */
-          IMB_suffix_anim(sanim->anim, suffix);
-        }
-        else {
-          if (openfile) {
-            sanim->anim = openanim(name,
-                                   IB_rect | ((seq->flag & SEQ_FILTERY) ? IB_animdeinterlace : 0),
-                                   seq->streamindex,
-                                   seq->strip->colorspace_settings.name);
-          }
-          else {
-            sanim->anim = openanim_noload(name,
-                                          IB_rect |
-                                              ((seq->flag & SEQ_FILTERY) ? IB_animdeinterlace : 0),
-                                          seq->streamindex,
-                                          seq->strip->colorspace_settings.name);
-          }
-
-          /* No individual view files - monoscopic, stereo 3d or EXR multi-view. */
-          totfiles = 1;
-        }
-
-        if (sanim->anim && use_proxy) {
-          seq_proxy_index_dir_set(sanim->anim, dir);
-        }
-      }
-      is_multiview_loaded = true;
-    }
-  }
-
-  if (is_multiview_loaded == false) {
-    StripAnim *sanim;
-
-    sanim = MEM_mallocN(sizeof(StripAnim), "Strip Anim");
-    BLI_addtail(&seq->anims, sanim);
-
-    if (openfile) {
-      sanim->anim = openanim(name,
-                             IB_rect | ((seq->flag & SEQ_FILTERY) ? IB_animdeinterlace : 0),
-                             seq->streamindex,
-                             seq->strip->colorspace_settings.name);
-    }
-    else {
-      sanim->anim = openanim_noload(name,
-                                    IB_rect | ((seq->flag & SEQ_FILTERY) ? IB_animdeinterlace : 0),
-                                    seq->streamindex,
-                                    seq->strip->colorspace_settings.name);
-    }
-
-    if (sanim->anim && use_proxy) {
-      seq_proxy_index_dir_set(sanim->anim, dir);
-    }
-  }
-}
-
-static bool seq_proxy_get_custom_file_fname(Sequence *seq, char *name, const int view_id)
-{
-  char fname[FILE_MAXFILE];
-  char suffix[24];
-  StripProxy *proxy = seq->strip->proxy;
-
-  if (proxy == NULL) {
-    return false;
-  }
-
-  BLI_join_dirfile(fname, PROXY_MAXFILE, proxy->dir, proxy->file);
-  BLI_path_abs(fname, BKE_main_blendfile_path_from_global());
-
-  if (view_id > 0) {
-    BLI_snprintf(suffix, sizeof(suffix), "_%d", view_id);
-    /* TODO(sergey): This will actually append suffix after extension
-     * which is weird but how was originally coded in multi-view branch.
-     */
-    BLI_snprintf(name, PROXY_MAXFILE, "%s_%s", fname, suffix);
-  }
-  else {
-    BLI_strncpy(name, fname, PROXY_MAXFILE);
-  }
-
-  return true;
-}
-
-static bool seq_proxy_get_fname(Editing *ed,
-                                Sequence *seq,
-                                int cfra,
-                                eSpaceSeq_Proxy_RenderSize render_size,
-                                char *name,
-                                const int view_id)
-{
-  char dir[PROXY_MAXFILE];
-  char suffix[24] = {'\0'};
-  StripProxy *proxy = seq->strip->proxy;
-
-  if (proxy == NULL) {
-    return false;
-  }
-
-  /* Multi-view suffix. */
-  if (view_id > 0) {
-    BLI_snprintf(suffix, sizeof(suffix), "_%d", view_id);
-  }
-
-  /* Per strip with Custom file situation is handled separately. */
-  if (proxy->storage & SEQ_STORAGE_PROXY_CUSTOM_FILE &&
-      ed->proxy_storage != SEQ_EDIT_PROXY_DIR_STORAGE) {
-    if (seq_proxy_get_custom_file_fname(seq, name, view_id)) {
-      return true;
-    }
-  }
-
-  if (ed->proxy_storage == SEQ_EDIT_PROXY_DIR_STORAGE) {
-    /* Per project default. */
-    if (ed->proxy_dir[0] == 0) {
-      BLI_strncpy(dir, "//BL_proxy", sizeof(dir));
-    }
-    else { /* Per project with custom dir. */
-      BLI_strncpy(dir, ed->proxy_dir, sizeof(dir));
-    }
-    BLI_path_abs(name, BKE_main_blendfile_path_from_global());
-  }
-  else {
-    /* Pre strip with custom dir. */
-    if (proxy->storage & SEQ_STORAGE_PROXY_CUSTOM_DIR) {
-      BLI_strncpy(dir, seq->strip->proxy->dir, sizeof(dir));
-    }
-    else { /* Per strip default. */
-      BLI_snprintf(dir, PROXY_MAXFILE, "%s/BL_proxy", seq->strip->dir);
-    }
-  }
-
-  /* Proxy size number to be used in path. */
-  int proxy_size_number = BKE_sequencer_rendersize_to_scale_factor(render_size) * 100;
-
-  BLI_snprintf(name,
-               PROXY_MAXFILE,
-               "%s/images/%d/%s_proxy%s",
-               dir,
-               proxy_size_number,
-               BKE_sequencer_give_stripelem(seq, cfra)->name,
-               suffix);
-  BLI_path_abs(name, BKE_main_blendfile_path_from_global());
-  strcat(name, ".jpg");
-
-  return true;
-}
-
-static bool seq_can_use_proxy(Sequence *seq, IMB_Proxy_Size psize)
-{
-  if (seq->strip->proxy == NULL) {
-    return false;
-  }
-  short size_flags = seq->strip->proxy->build_size_flags;
-  return (seq->flag & SEQ_USE_PROXY) != 0 && psize != IMB_PROXY_NONE && (size_flags & psize) != 0;
-}
-
-static ImBuf *seq_proxy_fetch(const SeqRenderData *context, Sequence *seq, int cfra)
-{
-  char name[PROXY_MAXFILE];
-  StripProxy *proxy = seq->strip->proxy;
-  const eSpaceSeq_Proxy_RenderSize psize = context->preview_render_size;
-  Editing *ed = context->scene->ed;
-  StripAnim *sanim;
-
-  /* only use proxies, if they are enabled (even if present!) */
-  if (!seq_can_use_proxy(seq, seq_rendersize_to_proxysize(psize))) {
-    return NULL;
-  }
-
-  if (proxy->storage & SEQ_STORAGE_PROXY_CUSTOM_FILE) {
-    int frameno = (int)BKE_sequencer_give_stripelem_index(seq, cfra) + seq->anim_startofs;
-    if (proxy->anim == NULL) {
-      if (seq_proxy_get_fname(ed, seq, cfra, psize, name, context->view_id) == 0) {
-        return NULL;
-      }
-
-      proxy->anim = openanim(name, IB_rect, 0, seq->strip->colorspace_settings.name);
-    }
-    if (proxy->anim == NULL) {
-      return NULL;
-    }
-
-    seq_open_anim_file(context->scene, seq, true);
-    sanim = seq->anims.first;
-
-    frameno = IMB_anim_index_get_frame_index(
-        sanim ? sanim->anim : NULL, seq->strip->proxy->tc, frameno);
-
-    return IMB_anim_absolute(proxy->anim, frameno, IMB_TC_NONE, IMB_PROXY_NONE);
-  }
-
-  if (seq_proxy_get_fname(ed, seq, cfra, psize, name, context->view_id) == 0) {
-    return NULL;
-  }
-
-  if (BLI_exists(name)) {
-    ImBuf *ibuf = IMB_loadiffname(name, IB_rect, NULL);
-
-    if (ibuf) {
-      sequencer_imbuf_assign_spaces(context->scene, ibuf);
-    }
-
-    return ibuf;
-  }
-
-  return NULL;
-}
-
-static void seq_proxy_build_frame(const SeqRenderData *context,
-                                  SeqRenderState *state,
-                                  Sequence *seq,
-                                  int cfra,
-                                  int proxy_render_size,
-                                  const bool overwrite)
-{
-  char name[PROXY_MAXFILE];
-  int quality;
-  int rectx, recty;
-  int ok;
-  ImBuf *ibuf_tmp, *ibuf;
-  Editing *ed = context->scene->ed;
-
-  if (!seq_proxy_get_fname(ed, seq, cfra, proxy_render_size, name, context->view_id)) {
-    return;
-  }
-
-  if (!overwrite && BLI_exists(name)) {
-    return;
-  }
-
-  ibuf_tmp = seq_render_strip(context, state, seq, cfra);
-
-  rectx = (proxy_render_size * ibuf_tmp->x) / 100;
-  recty = (proxy_render_size * ibuf_tmp->y) / 100;
-
-  if (ibuf_tmp->x != rectx || ibuf_tmp->y != recty) {
-    ibuf = IMB_dupImBuf(ibuf_tmp);
-    IMB_metadata_copy(ibuf, ibuf_tmp);
-    IMB_freeImBuf(ibuf_tmp);
-    IMB_scalefastImBuf(ibuf, (short)rectx, (short)recty);
-  }
-  else {
-    ibuf = ibuf_tmp;
-  }
-
-  /* depth = 32 is intentionally left in, otherwise ALPHA channels
-   * won't work... */
-  quality = seq->strip->proxy->quality;
-  ibuf->ftype = IMB_FTYPE_JPG;
-  ibuf->foptions.quality = quality;
-
-  /* unsupported feature only confuses other s/w */
-  if (ibuf->planes == 32) {
-    ibuf->planes = 24;
-  }
-
-  BLI_make_existing_file(name);
-
-  ok = IMB_saveiff(ibuf, name, IB_rect | IB_zbuf | IB_zbuffloat);
-  if (ok == 0) {
-    perror(name);
-  }
-
-  IMB_freeImBuf(ibuf);
-}
-
-/**
- * Returns whether the file this context would read from even exist,
- * if not, don't create the context
- */
-static bool seq_proxy_multiview_context_invalid(Sequence *seq, Scene *scene, const int view_id)
-{
-  if ((scene->r.scemode & R_MULTIVIEW) == 0) {
-    return false;
-  }
-
-  if ((seq->type == SEQ_TYPE_IMAGE) && (seq->views_format == R_IMF_VIEWS_INDIVIDUAL)) {
-    static char prefix[FILE_MAX];
-    static const char *ext = NULL;
-    char str[FILE_MAX];
-
-    if (view_id == 0) {
-      char path[FILE_MAX];
-      BLI_join_dirfile(path, sizeof(path), seq->strip->dir, seq->strip->stripdata->name);
-      BLI_path_abs(path, BKE_main_blendfile_path_from_global());
-      BKE_scene_multiview_view_prefix_get(scene, path, prefix, &ext);
-    }
-    else {
-      prefix[0] = '\0';
-    }
-
-    if (prefix[0] == '\0') {
-      return view_id != 0;
-    }
-
-    seq_multiview_name(scene, view_id, prefix, ext, str, FILE_MAX);
-
-    if (BLI_access(str, R_OK) == 0) {
-      return false;
-    }
-
-    return view_id != 0;
-  }
-  return false;
-}
-
-/**
- * This returns the maximum possible number of required contexts
- */
-static int seq_proxy_context_count(Sequence *seq, Scene *scene)
-{
-  int num_views = 1;
-
-  if ((scene->r.scemode & R_MULTIVIEW) == 0) {
-    return 1;
-  }
-
-  switch (seq->type) {
-    case SEQ_TYPE_MOVIE: {
-      num_views = BLI_listbase_count(&seq->anims);
-      break;
-    }
-    case SEQ_TYPE_IMAGE: {
-      switch (seq->views_format) {
-        case R_IMF_VIEWS_INDIVIDUAL:
-          num_views = BKE_scene_multiview_num_views_get(&scene->r);
-          break;
-        case R_IMF_VIEWS_STEREO_3D:
-          num_views = 2;
-          break;
-        case R_IMF_VIEWS_MULTIVIEW:
-          /* not supported at the moment */
-          /* pass through */
-        default:
-          num_views = 1;
-      }
-      break;
-    }
-  }
-
-  return num_views;
-}
-
-bool BKE_sequencer_proxy_rebuild_context(Main *bmain,
-                                         Depsgraph *depsgraph,
-                                         Scene *scene,
-                                         Sequence *seq,
-                                         struct GSet *file_list,
-                                         ListBase *queue)
-{
-  SeqIndexBuildContext *context;
-  Sequence *nseq;
-  LinkData *link;
-  int num_files;
-  int i;
-
-  if (!seq->strip || !seq->strip->proxy) {
-    return true;
-  }
-
-  if (!(seq->flag & SEQ_USE_PROXY)) {
-    return true;
-  }
-
-  num_files = seq_proxy_context_count(seq, scene);
-
-  for (i = 0; i < num_files; i++) {
-    if (seq_proxy_multiview_context_invalid(seq, scene, i)) {
-      continue;
-    }
-
-    context = MEM_callocN(sizeof(SeqIndexBuildContext), "seq proxy rebuild context");
-
-    nseq = BKE_sequence_dupli_recursive(scene, scene, NULL, seq, 0);
-
-    context->tc_flags = nseq->strip->proxy->build_tc_flags;
-    context->size_flags = nseq->strip->proxy->build_size_flags;
-    context->quality = nseq->strip->proxy->quality;
-    context->overwrite = (nseq->strip->proxy->build_flags & SEQ_PROXY_SKIP_EXISTING) == 0;
-
-    context->bmain = bmain;
-    context->depsgraph = depsgraph;
-    context->scene = scene;
-    context->orig_seq = seq;
-    context->seq = nseq;
-
-    context->view_id = i; /* only for images */
-
-    if (nseq->type == SEQ_TYPE_MOVIE) {
-      StripAnim *sanim;
-
-      seq_open_anim_file(scene, nseq, true);
-      sanim = BLI_findlink(&nseq->anims, i);
-
-      if (sanim->anim) {
-        context->index_context = IMB_anim_index_rebuild_context(sanim->anim,
-                                                                context->tc_flags,
-                                                                context->size_flags,
-                                                                context->quality,
-                                                                context->overwrite,
-                                                                file_list);
-      }
-      if (!context->index_context) {
-        MEM_freeN(context);
-        return false;
-      }
-    }
-
-    link = BLI_genericNodeN(context);
-    BLI_addtail(queue, link);
-  }
-  return true;
-}
-
-void BKE_sequencer_proxy_rebuild(SeqIndexBuildContext *context,
-                                 short *stop,
-                                 short *do_update,
-                                 float *progress)
-{
-  const bool overwrite = context->overwrite;
-  SeqRenderData render_context;
-  Sequence *seq = context->seq;
-  Scene *scene = context->scene;
-  Main *bmain = context->bmain;
-  int cfra;
-
-  if (seq->type == SEQ_TYPE_MOVIE) {
-    if (context->index_context) {
-      IMB_anim_index_rebuild(context->index_context, stop, do_update, progress);
-    }
-
-    return;
-  }
-
-  if (!(seq->flag & SEQ_USE_PROXY)) {
-    return;
-  }
-
-  /* that's why it is called custom... */
-  if (seq->strip->proxy && seq->strip->proxy->storage & SEQ_STORAGE_PROXY_CUSTOM_FILE) {
-    return;
-  }
-
-  /* fail safe code */
-
-  BKE_sequencer_new_render_data(bmain,
-                                context->depsgraph,
-                                context->scene,
-                                roundf((scene->r.size * (float)scene->r.xsch) / 100.0f),
-                                roundf((scene->r.size * (float)scene->r.ysch) / 100.0f),
-                                100,
-                                false,
-                                &render_context);
-
-  render_context.skip_cache = true;
-  render_context.is_proxy_render = true;
-  render_context.view_id = context->view_id;
-
-  SeqRenderState state;
-  sequencer_state_init(&state);
-
-  for (cfra = seq->startdisp + seq->startstill; cfra < seq->enddisp - seq->endstill; cfra++) {
-    if (context->size_flags & IMB_PROXY_25) {
-      seq_proxy_build_frame(&render_context, &state, seq, cfra, 25, overwrite);
-    }
-    if (context->size_flags & IMB_PROXY_50) {
-      seq_proxy_build_frame(&render_context, &state, seq, cfra, 50, overwrite);
-    }
-    if (context->size_flags & IMB_PROXY_75) {
-      seq_proxy_build_frame(&render_context, &state, seq, cfra, 75, overwrite);
-    }
-    if (context->size_flags & IMB_PROXY_100) {
-      seq_proxy_build_frame(&render_context, &state, seq, cfra, 100, overwrite);
-    }
-
-    *progress = (float)(cfra - seq->startdisp - seq->startstill) /
-                (seq->enddisp - seq->endstill - seq->startdisp - seq->startstill);
-    *do_update = true;
-
-    if (*stop || G.is_break) {
-      break;
-    }
-  }
-}
-
-void BKE_sequencer_proxy_rebuild_finish(SeqIndexBuildContext *context, bool stop)
-{
-  if (context->index_context) {
-    StripAnim *sanim;
-
-    for (sanim = context->seq->anims.first; sanim; sanim = sanim->next) {
-      IMB_close_anim_proxies(sanim->anim);
-    }
-
-    for (sanim = context->orig_seq->anims.first; sanim; sanim = sanim->next) {
-      IMB_close_anim_proxies(sanim->anim);
-    }
-
-    IMB_anim_index_rebuild_finish(context->index_context, stop);
-  }
-
-  seq_free_sequence_recurse(NULL, context->seq, true);
-
-  MEM_freeN(context);
-}
-
-void BKE_sequencer_proxy_set(struct Sequence *seq, bool value)
-{
-  if (value) {
-    seq->flag |= SEQ_USE_PROXY;
-    if (seq->strip->proxy == NULL) {
-      seq->strip->proxy = MEM_callocN(sizeof(struct StripProxy), "StripProxy");
-      seq->strip->proxy->quality = 90;
-      seq->strip->proxy->build_tc_flags = SEQ_PROXY_TC_ALL;
-      seq->strip->proxy->build_size_flags = SEQ_PROXY_IMAGE_SIZE_25;
-    }
-  }
-  else {
-    seq->flag &= ~SEQ_USE_PROXY;
-  }
-}
-
-/*********************** color balance *************************/
-
-static StripColorBalance calc_cb(StripColorBalance *cb_)
-{
-  StripColorBalance cb = *cb_;
-  int c;
-
-  for (c = 0; c < 3; c++) {
-    cb.lift[c] = 2.0f - cb.lift[c];
-  }
-
-  if (cb.flag & SEQ_COLOR_BALANCE_INVERSE_LIFT) {
-    for (c = 0; c < 3; c++) {
-      /* tweak to give more subtle results
-       * values above 1.0 are scaled */
-      if (cb.lift[c] > 1.0f) {
-        cb.lift[c] = pow(cb.lift[c] - 1.0f, 2.0) + 1.0;
-      }
-
-      cb.lift[c] = 2.0f - cb.lift[c];
-    }
-  }
-
-  if (cb.flag & SEQ_COLOR_BALANCE_INVERSE_GAIN) {
-    for (c = 0; c < 3; c++) {
-      if (cb.gain[c] != 0.0f) {
-        cb.gain[c] = 1.0f / cb.gain[c];
-      }
-      else {
-        cb.gain[c] = 1000000; /* should be enough :) */
-      }
-    }
-  }
-
-  if (!(cb.flag & SEQ_COLOR_BALANCE_INVERSE_GAMMA)) {
-    for (c = 0; c < 3; c++) {
-      if (cb.gamma[c] != 0.0f) {
-        cb.gamma[c] = 1.0f / cb.gamma[c];
-      }
-      else {
-        cb.gamma[c] = 1000000; /* should be enough :) */
-      }
-    }
-  }
-
-  return cb;
-}
-
-/* note: lift is actually 2-lift */
-MINLINE float color_balance_fl(
-    float in, const float lift, const float gain, const float gamma, const float mul)
-{
-  float x = (((in - 1.0f) * lift) + 1.0f) * gain;
-
-  /* prevent NaN */
-  if (x < 0.f) {
-    x = 0.f;
-  }
-
-  x = powf(x, gamma) * mul;
-  CLAMP(x, FLT_MIN, FLT_MAX);
-  return x;
-}
-
-static void make_cb_table_float(float lift, float gain, float gamma, float *table, float mul)
-{
-  int y;
-
-  for (y = 0; y < 256; y++) {
-    float v = color_balance_fl((float)y * (1.0f / 255.0f), lift, gain, gamma, mul);
-
-    table[y] = v;
-  }
-}
-
-static void color_balance_byte_byte(StripColorBalance *cb_,
-                                    unsigned char *rect,
-                                    unsigned char *mask_rect,
-                                    int width,
-                                    int height,
-                                    float mul)
-{
-  // unsigned char cb_tab[3][256];
-  unsigned char *cp = rect;
-  unsigned char *e = cp + width * 4 * height;
-  unsigned char *m = mask_rect;
-
-  StripColorBalance cb = calc_cb(cb_);
-
-  while (cp < e) {
-    float p[4];
-    int c;
-
-    straight_uchar_to_premul_float(p, cp);
-
-    for (c = 0; c < 3; c++) {
-      float t = color_balance_fl(p[c], cb.lift[c], cb.gain[c], cb.gamma[c], mul);
-
-      if (m) {
-        float m_normal = (float)m[c] / 255.0f;
-
-        p[c] = p[c] * (1.0f - m_normal) + t * m_normal;
-      }
-      else {
-        p[c] = t;
-      }
-    }
-
-    premul_float_to_straight_uchar(cp, p);
-
-    cp += 4;
-    if (m) {
-      m += 4;
-    }
-  }
-}
-
-static void color_balance_byte_float(StripColorBalance *cb_,
-                                     unsigned char *rect,
-                                     float *rect_float,
-                                     unsigned char *mask_rect,
-                                     int width,
-                                     int height,
-                                     float mul)
-{
-  float cb_tab[4][256];
-  int c, i;
-  unsigned char *p = rect;
-  unsigned char *e = p + width * 4 * height;
-  unsigned char *m = mask_rect;
-  float *o;
-  StripColorBalance cb;
-
-  o = rect_float;
-
-  cb = calc_cb(cb_);
-
-  for (c = 0; c < 3; c++) {
-    make_cb_table_float(cb.lift[c], cb.gain[c], cb.gamma[c], cb_tab[c], mul);
-  }
-
-  for (i = 0; i < 256; i++) {
-    cb_tab[3][i] = ((float)i) * (1.0f / 255.0f);
-  }
-
-  while (p < e) {
-    if (m) {
-      const float t[3] = {m[0] / 255.0f, m[1] / 255.0f, m[2] / 255.0f};
-
-      p[0] = p[0] * (1.0f - t[0]) + t[0] * cb_tab[0][p[0]];
-      p[1] = p[1] * (1.0f - t[1]) + t[1] * cb_tab[1][p[1]];
-      p[2] = p[2] * (1.0f - t[2]) + t[2] * cb_tab[2][p[2]];
-
-      m += 4;
-    }
-    else {
-      o[0] = cb_tab[0][p[0]];
-      o[1] = cb_tab[1][p[1]];
-      o[2] = cb_tab[2][p[2]];
-    }
-
-    o[3] = cb_tab[3][p[3]];
-
-    p += 4;
-    o += 4;
-  }
-}
-
-static void color_balance_float_float(StripColorBalance *cb_,
-                                      float *rect_float,
-                                      const float *mask_rect_float,
-                                      int width,
-                                      int height,
-                                      float mul)
-{
-  float *p = rect_float;
-  const float *e = rect_float + width * 4 * height;
-  const float *m = mask_rect_float;
-  StripColorBalance cb = calc_cb(cb_);
-
-  while (p < e) {
-    int c;
-    for (c = 0; c < 3; c++) {
-      float t = color_balance_fl(p[c], cb.lift[c], cb.gain[c], cb.gamma[c], mul);
-
-      if (m) {
-        p[c] = p[c] * (1.0f - m[c]) + t * m[c];
-      }
-      else {
-        p[c] = t;
-      }
-    }
-
-    p += 4;
-    if (m) {
-      m += 4;
-    }
-  }
-}
-
-typedef struct ColorBalanceInitData {
-  StripColorBalance *cb;
-  ImBuf *ibuf;
-  float mul;
-  ImBuf *mask;
-  bool make_float;
-} ColorBalanceInitData;
-
-typedef struct ColorBalanceThread {
-  StripColorBalance *cb;
-  float mul;
-
-  int width, height;
-
-  unsigned char *rect, *mask_rect;
-  float *rect_float, *mask_rect_float;
-
-  bool make_float;
-} ColorBalanceThread;
-
-static void color_balance_init_handle(void *handle_v,
-                                      int start_line,
-                                      int tot_line,
-                                      void *init_data_v)
-{
-  ColorBalanceThread *handle = (ColorBalanceThread *)handle_v;
-  ColorBalanceInitData *init_data = (ColorBalanceInitData *)init_data_v;
-  ImBuf *ibuf = init_data->ibuf;
-  ImBuf *mask = init_data->mask;
-
-  int offset = 4 * start_line * ibuf->x;
-
-  memset(handle, 0, sizeof(ColorBalanceThread));
-
-  handle->cb = init_data->cb;
-  handle->mul = init_data->mul;
-  handle->width = ibuf->x;
-  handle->height = tot_line;
-  handle->make_float = init_data->make_float;
-
-  if (ibuf->rect) {
-    handle->rect = (unsigned char *)ibuf->rect + offset;
-  }
-
-  if (ibuf->rect_float) {
-    handle->rect_float = ibuf->rect_float + offset;
-  }
-
-  if (mask) {
-    if (mask->rect) {
-      handle->mask_rect = (unsigned char *)mask->rect + offset;
-    }
-
-    if (mask->rect_float) {
-      handle->mask_rect_float = mask->rect_float + offset;
-    }
-  }
-  else {
-    handle->mask_rect = NULL;
-    handle->mask_rect_float = NULL;
-  }
-}
-
-static void *color_balance_do_thread(void *thread_data_v)
-{
-  ColorBalanceThread *thread_data = (ColorBalanceThread *)thread_data_v;
-  StripColorBalance *cb = thread_data->cb;
-  int width = thread_data->width, height = thread_data->height;
-  unsigned char *rect = thread_data->rect;
-  unsigned char *mask_rect = thread_data->mask_rect;
-  float *rect_float = thread_data->rect_float;
-  float *mask_rect_float = thread_data->mask_rect_float;
-  float mul = thread_data->mul;
-
-  if (rect_float) {
-    color_balance_float_float(cb, rect_float, mask_rect_float, width, height, mul);
-  }
-  else if (thread_data->make_float) {
-    color_balance_byte_float(cb, rect, rect_float, mask_rect, width, height, mul);
-  }
-  else {
-    color_balance_byte_byte(cb, rect, mask_rect, width, height, mul);
-  }
-
-  return NULL;
-}
-
-/**
- * \a cfra is offset by \a fra_offset only in case we are using a real mask.
- */
-ImBuf *BKE_sequencer_render_mask_input(const SeqRenderData *context,
-                                       int mask_input_type,
-                                       Sequence *mask_sequence,
-                                       Mask *mask_id,
-                                       int cfra,
-                                       int fra_offset,
-                                       bool make_float)
-{
-  ImBuf *mask_input = NULL;
-
-  if (mask_input_type == SEQUENCE_MASK_INPUT_STRIP) {
-    if (mask_sequence) {
-      SeqRenderState state;
-      sequencer_state_init(&state);
-
-      mask_input = seq_render_strip(context, &state, mask_sequence, cfra);
-
-      if (make_float) {
-        if (!mask_input->rect_float) {
-          IMB_float_from_rect(mask_input);
-        }
-      }
-      else {
-        if (!mask_input->rect) {
-          IMB_rect_from_float(mask_input);
-        }
-      }
-    }
-  }
-  else if (mask_input_type == SEQUENCE_MASK_INPUT_ID) {
-    mask_input = seq_render_mask(context, mask_id, cfra - fra_offset, make_float);
-  }
-
-  return mask_input;
-}
-
-void BKE_sequencer_color_balance_apply(
-    StripColorBalance *cb, ImBuf *ibuf, float mul, bool make_float, ImBuf *mask_input)
-{
-  ColorBalanceInitData init_data;
-
-  if (!ibuf->rect_float && make_float) {
-    imb_addrectfloatImBuf(ibuf);
-  }
-
-  init_data.cb = cb;
-  init_data.ibuf = ibuf;
-  init_data.mul = mul;
-  init_data.make_float = make_float;
-  init_data.mask = mask_input;
-
-  IMB_processor_apply_threaded(ibuf->y,
-                               sizeof(ColorBalanceThread),
-                               &init_data,
-                               color_balance_init_handle,
-                               color_balance_do_thread);
-
-  /* color balance either happens on float buffer or byte buffer, but never on both,
-   * free byte buffer if there's float buffer since float buffer would be used for
-   * color balance in favor of byte buffer
-   */
-  if (ibuf->rect_float && ibuf->rect) {
-    imb_freerectImBuf(ibuf);
-  }
-}
-
-/*
- * input preprocessing for SEQ_TYPE_IMAGE, SEQ_TYPE_MOVIE, SEQ_TYPE_MOVIECLIP and SEQ_TYPE_SCENE
- *
- * Do all the things you can't really do afterwards using sequence effects
- * (read: before rescaling to render resolution has been done)
- *
- * Order is important!
- *
- * - Deinterlace
- * - Crop and transform in image source coordinate space
- * - Flip X + Flip Y (could be done afterwards, backward compatibility)
- * - Promote image to float data (affects pipeline operations afterwards)
- * - Color balance (is most efficient in the byte -> float
- *   (future: half -> float should also work fine!)
- *   case, if done on load, since we can use lookup tables)
- * - Premultiply
- */
-
-bool BKE_sequencer_input_have_to_preprocess(const SeqRenderData *context,
-                                            Sequence *seq,
-                                            float UNUSED(cfra))
-{
-  float mul;
-
-  if (context && context->is_proxy_render) {
-    return false;
-  }
-
-  if (seq->flag &
-      (SEQ_FILTERY | SEQ_USE_CROP | SEQ_USE_TRANSFORM | SEQ_FLIPX | SEQ_FLIPY | SEQ_MAKE_FLOAT)) {
-    return true;
-  }
-
-  mul = seq->mul;
-
-  if (seq->blend_mode == SEQ_BLEND_REPLACE) {
-    mul *= seq->blend_opacity / 100.0f;
-  }
-
-  if (mul != 1.0f) {
-    return true;
-  }
-
-  if (seq->sat != 1.0f) {
-    return true;
-  }
-
-  if (seq->modifiers.first) {
-    return true;
-  }
-
-  return false;
-}
-
-static ImBuf *input_preprocess(const SeqRenderData *context,
-                               Sequence *seq,
-                               float cfra,
-                               ImBuf *ibuf,
-                               const bool is_proxy_image)
-{
-  Scene *scene = context->scene;
-  float mul;
-
-  ibuf = IMB_makeSingleUser(ibuf);
-
-  if ((seq->flag & SEQ_FILTERY) && !ELEM(seq->type, SEQ_TYPE_MOVIE, SEQ_TYPE_MOVIECLIP)) {
-    IMB_filtery(ibuf);
-  }
-
-  if (seq->flag & (SEQ_USE_CROP | SEQ_USE_TRANSFORM)) {
-    StripCrop c = {0};
-    StripTransform t = {0};
-
-    if (seq->flag & SEQ_USE_CROP && seq->strip->crop) {
-      c = *seq->strip->crop;
-    }
-    if (seq->flag & SEQ_USE_TRANSFORM && seq->strip->transform) {
-      t = *seq->strip->transform;
-    }
-
-    /* Calculate scale factor for current image if needed. */
-    double scale_factor, image_scale_factor = 1.0;
-    if (context->preview_render_size == SEQ_RENDER_SIZE_SCENE) {
-      scale_factor = image_scale_factor = (double)scene->r.size / 100;
-    }
-    else {
-      scale_factor = BKE_sequencer_rendersize_to_scale_factor(context->preview_render_size);
-      if (!is_proxy_image) {
-        image_scale_factor = scale_factor;
-      }
-    }
-
-    if (image_scale_factor != 1.0) {
-      if (context->for_render) {
-        IMB_scaleImBuf(ibuf, ibuf->x * image_scale_factor, ibuf->y * image_scale_factor);
-      }
-      else {
-        IMB_scalefastImBuf(ibuf, ibuf->x * image_scale_factor, ibuf->y * image_scale_factor);
-      }
-    }
-
-    t.xofs *= scale_factor;
-    t.yofs *= scale_factor;
-    c.left *= scale_factor;
-    c.right *= scale_factor;
-    c.top *= scale_factor;
-    c.bottom *= scale_factor;
-
-    int sx, sy, dx, dy;
-    sx = ibuf->x - c.left - c.right;
-    sy = ibuf->y - c.top - c.bottom;
-
-    if (seq->flag & SEQ_USE_TRANSFORM) {
-      dx = context->rectx;
-      dy = context->recty;
-    }
-    else {
-      dx = sx;
-      dy = sy;
-    }
-
-    if (c.top + c.bottom >= ibuf->y || c.left + c.right >= ibuf->x || t.xofs >= dx ||
-        t.yofs >= dy) {
-      return NULL;
-    }
-
-    ImBuf *i = IMB_allocImBuf(dx, dy, 32, ibuf->rect_float ? IB_rectfloat : IB_rect);
-    IMB_rectcpy(i, ibuf, t.xofs, t.yofs, c.left, c.bottom, sx, sy);
-    sequencer_imbuf_assign_spaces(scene, i);
-    IMB_metadata_copy(i, ibuf);
-    IMB_freeImBuf(ibuf);
-    ibuf = i;
-  }
-
-  if (seq->flag & SEQ_FLIPX) {
-    IMB_flipx(ibuf);
-  }
-
-  if (seq->flag & SEQ_FLIPY) {
-    IMB_flipy(ibuf);
-  }
-
-  if (seq->sat != 1.0f) {
-    IMB_saturation(ibuf, seq->sat);
-  }
-
-  mul = seq->mul;
-
-  if (seq->blend_mode == SEQ_BLEND_REPLACE) {
-    mul *= seq->blend_opacity / 100.0f;
-  }
-
-  if (seq->flag & SEQ_MAKE_FLOAT) {
-    if (!ibuf->rect_float) {
-      BKE_sequencer_imbuf_to_sequencer_space(scene, ibuf, true);
-    }
-
-    if (ibuf->rect) {
-      imb_freerectImBuf(ibuf);
-    }
-  }
-
-  if (mul != 1.0f) {
-    multibuf(ibuf, mul);
-  }
-
-  if (ibuf->x != context->rectx || ibuf->y != context->recty) {
-    if (context->for_render) {
-      IMB_scaleImBuf(ibuf, (short)context->rectx, (short)context->recty);
-    }
-    else {
-      IMB_scalefastImBuf(ibuf, (short)context->rectx, (short)context->recty);
-    }
-  }
-
-  if (seq->modifiers.first) {
-    ImBuf *ibuf_new = BKE_sequence_modifier_apply_stack(context, seq, ibuf, cfra);
-
-    if (ibuf_new != ibuf) {
-      IMB_metadata_copy(ibuf_new, ibuf);
-      IMB_freeImBuf(ibuf);
-      ibuf = ibuf_new;
-    }
-  }
-
-  return ibuf;
-}
-
-/*********************** strip rendering functions  *************************/
-
-typedef struct RenderEffectInitData {
-  struct SeqEffectHandle *sh;
-  const SeqRenderData *context;
-  Sequence *seq;
-  float cfra, facf0, facf1;
-  ImBuf *ibuf1, *ibuf2, *ibuf3;
-
-  ImBuf *out;
-} RenderEffectInitData;
-
-typedef struct RenderEffectThread {
-  struct SeqEffectHandle *sh;
-  const SeqRenderData *context;
-  Sequence *seq;
-  float cfra, facf0, facf1;
-  ImBuf *ibuf1, *ibuf2, *ibuf3;
-
-  ImBuf *out;
-  int start_line, tot_line;
-} RenderEffectThread;
-
-static void render_effect_execute_init_handle(void *handle_v,
-                                              int start_line,
-                                              int tot_line,
-                                              void *init_data_v)
-{
-  RenderEffectThread *handle = (RenderEffectThread *)handle_v;
-  RenderEffectInitData *init_data = (RenderEffectInitData *)init_data_v;
-
-  handle->sh = init_data->sh;
-  handle->context = init_data->context;
-  handle->seq = init_data->seq;
-  handle->cfra = init_data->cfra;
-  handle->facf0 = init_data->facf0;
-  handle->facf1 = init_data->facf1;
-  handle->ibuf1 = init_data->ibuf1;
-  handle->ibuf2 = init_data->ibuf2;
-  handle->ibuf3 = init_data->ibuf3;
-  handle->out = init_data->out;
-
-  handle->start_line = start_line;
-  handle->tot_line = tot_line;
-}
-
-static void *render_effect_execute_do_thread(void *thread_data_v)
-{
-  RenderEffectThread *thread_data = (RenderEffectThread *)thread_data_v;
-
-  thread_data->sh->execute_slice(thread_data->context,
-                                 thread_data->seq,
-                                 thread_data->cfra,
-                                 thread_data->facf0,
-                                 thread_data->facf1,
-                                 thread_data->ibuf1,
-                                 thread_data->ibuf2,
-                                 thread_data->ibuf3,
-                                 thread_data->start_line,
-                                 thread_data->tot_line,
-                                 thread_data->out);
-
-  return NULL;
-}
-
-ImBuf *BKE_sequencer_effect_execute_threaded(struct SeqEffectHandle *sh,
-                                             const SeqRenderData *context,
-                                             Sequence *seq,
-                                             float cfra,
-                                             float facf0,
-                                             float facf1,
-                                             ImBuf *ibuf1,
-                                             ImBuf *ibuf2,
-                                             ImBuf *ibuf3)
-{
-  RenderEffectInitData init_data;
-  ImBuf *out = sh->init_execution(context, ibuf1, ibuf2, ibuf3);
-
-  init_data.sh = sh;
-  init_data.context = context;
-  init_data.seq = seq;
-  init_data.cfra = cfra;
-  init_data.facf0 = facf0;
-  init_data.facf1 = facf1;
-  init_data.ibuf1 = ibuf1;
-  init_data.ibuf2 = ibuf2;
-  init_data.ibuf3 = ibuf3;
-  init_data.out = out;
-
-  IMB_processor_apply_threaded(out->y,
-                               sizeof(RenderEffectThread),
-                               &init_data,
-                               render_effect_execute_init_handle,
-                               render_effect_execute_do_thread);
-
-  return out;
-}
-
-static ImBuf *seq_render_effect_strip_impl(const SeqRenderData *context,
-                                           SeqRenderState *state,
-                                           Sequence *seq,
-                                           float cfra)
-{
-  Scene *scene = context->scene;
-  float fac, facf;
-  int early_out;
-  int i;
-  struct SeqEffectHandle sh = BKE_sequence_get_effect(seq);
-  FCurve *fcu = NULL;
-  ImBuf *ibuf[3];
-  Sequence *input[3];
-  ImBuf *out = NULL;
-
-  ibuf[0] = ibuf[1] = ibuf[2] = NULL;
-
-  input[0] = seq->seq1;
-  input[1] = seq->seq2;
-  input[2] = seq->seq3;
-
-  if (!sh.execute && !(sh.execute_slice && sh.init_execution)) {
-    /* effect not supported in this version... */
-    out = IMB_allocImBuf(context->rectx, context->recty, 32, IB_rect);
-    return out;
-  }
-
-  if (seq->flag & SEQ_USE_EFFECT_DEFAULT_FADE) {
-    sh.get_default_fac(seq, cfra, &fac, &facf);
-    facf = fac;
-  }
-  else {
-    fcu = id_data_find_fcurve(&scene->id, seq, &RNA_Sequence, "effect_fader", 0, NULL);
-    if (fcu) {
-      fac = facf = evaluate_fcurve(fcu, cfra);
-    }
-    else {
-      fac = facf = seq->effect_fader;
-    }
-  }
-
-  early_out = sh.early_out(seq, fac, facf);
-
-  switch (early_out) {
-    case EARLY_NO_INPUT:
-      out = sh.execute(context, seq, cfra, fac, facf, NULL, NULL, NULL);
-      break;
-    case EARLY_DO_EFFECT:
-      for (i = 0; i < 3; i++) {
-        /* Speed effect requires time remapping of `cfra` for input(s). */
-        if (input[0] && seq->type == SEQ_TYPE_SPEED) {
-          float target_frame = BKE_sequencer_speed_effect_target_frame_get(context, seq, cfra, i);
-          ibuf[i] = seq_render_strip(context, state, input[0], target_frame);
-        }
-        else { /* Other effects. */
-          if (input[i]) {
-            ibuf[i] = seq_render_strip(context, state, input[i], cfra);
-          }
-        }
-      }
-
-      if (ibuf[0] && (ibuf[1] || BKE_sequence_effect_get_num_inputs(seq->type) == 1)) {
-        if (sh.multithreaded) {
-          out = BKE_sequencer_effect_execute_threaded(
-              &sh, context, seq, cfra, fac, facf, ibuf[0], ibuf[1], ibuf[2]);
-        }
-        else {
-          out = sh.execute(context, seq, cfra, fac, facf, ibuf[0], ibuf[1], ibuf[2]);
-        }
-      }
-      break;
-    case EARLY_USE_INPUT_1:
-      if (input[0]) {
-        out = seq_render_strip(context, state, input[0], cfra);
-      }
-      break;
-    case EARLY_USE_INPUT_2:
-      if (input[1]) {
-        out = seq_render_strip(context, state, input[1], cfra);
-      }
-      break;
-  }
-
-  for (i = 0; i < 3; i++) {
-    IMB_freeImBuf(ibuf[i]);
-  }
-
-  if (out == NULL) {
-    out = IMB_allocImBuf(context->rectx, context->recty, 32, IB_rect);
-  }
-
-  return out;
-}
-
-/**
- * Render individual view for multi-view or single (default view) for mono-view.
- */
-static ImBuf *seq_render_image_strip_view(const SeqRenderData *context,
-                                          Sequence *seq,
-                                          char *name,
-                                          char *prefix,
-                                          const char *ext,
-                                          int view_id)
-{
-
-  ImBuf *ibuf = NULL;
-
-  int flag = IB_rect | IB_metadata;
-  if (seq->alpha_mode == SEQ_ALPHA_PREMUL) {
-    flag |= IB_alphamode_premul;
-  }
-
-  if (prefix[0] == '\0') {
-    ibuf = IMB_loadiffname(name, flag, seq->strip->colorspace_settings.name);
-  }
-  else {
-    char str[FILE_MAX];
-    BKE_scene_multiview_view_prefix_get(context->scene, name, prefix, &ext);
-    seq_multiview_name(context->scene, view_id, prefix, ext, str, FILE_MAX);
-    ibuf = IMB_loadiffname(str, flag, seq->strip->colorspace_settings.name);
-  }
-
-  if (ibuf == NULL) {
-    return NULL;
-  }
-
-  /* We don't need both (speed reasons)! */
-  if (ibuf->rect_float != NULL && ibuf->rect != NULL) {
-    imb_freerectImBuf(ibuf);
-  }
-
-  /* All sequencer color is done in SRGB space, linear gives odd cross-fades. */
-  BKE_sequencer_imbuf_to_sequencer_space(context->scene, ibuf, false);
-
-  return ibuf;
-}
-
-static bool seq_image_strip_is_multiview_render(
-    Scene *scene, Sequence *seq, int totfiles, char *name, char *r_prefix, const char *r_ext)
-{
-  if (totfiles > 1) {
-    BKE_scene_multiview_view_prefix_get(scene, name, r_prefix, &r_ext);
-    if (r_prefix[0] == '\0') {
-      return false;
-    }
-  }
-  else {
-    r_prefix[0] = '\0';
-  }
-
-  return (seq->flag & SEQ_USE_VIEWS) != 0 && (scene->r.scemode & R_MULTIVIEW) != 0;
-}
-
-static ImBuf *seq_render_image_strip(const SeqRenderData *context,
-                                     Sequence *seq,
-                                     float UNUSED(nr),
-                                     float cfra,
-                                     bool *r_is_proxy_image)
-{
-  char name[FILE_MAX];
-  const char *ext = NULL;
-  char prefix[FILE_MAX];
-  ImBuf *ibuf = NULL;
-
-  StripElem *s_elem = BKE_sequencer_give_stripelem(seq, cfra);
-  if (s_elem == NULL) {
-    return NULL;
-  }
-
-  BLI_join_dirfile(name, sizeof(name), seq->strip->dir, s_elem->name);
-  BLI_path_abs(name, BKE_main_blendfile_path_from_global());
-
-  /* Try to get a proxy image. */
-  ibuf = seq_proxy_fetch(context, seq, cfra);
-  if (ibuf != NULL) {
-    s_elem->orig_width = ibuf->x;
-    s_elem->orig_height = ibuf->y;
-    *r_is_proxy_image = true;
-    return ibuf;
-  }
-
-  /* Proxy not found, render original. */
-  const int totfiles = seq_num_files(context->scene, seq->views_format, true);
-  bool is_multiview_render = seq_image_strip_is_multiview_render(
-      context->scene, seq, totfiles, name, prefix, ext);
-
-  if (is_multiview_render) {
-    int totviews = BKE_scene_multiview_num_views_get(&context->scene->r);
-    ImBuf **ibufs_arr = MEM_callocN(sizeof(ImBuf *) * totviews, "Sequence Image Views Imbufs");
-
-    for (int view_id = 0; view_id < totfiles; view_id++) {
-      ibufs_arr[view_id] = seq_render_image_strip_view(context, seq, name, prefix, ext, view_id);
-    }
-
-    if (ibufs_arr[0] == NULL) {
-      return NULL;
-    }
-
-    if (seq->views_format == R_IMF_VIEWS_STEREO_3D) {
-      IMB_ImBufFromStereo3d(seq->stereo3d_format, ibufs_arr[0], &ibufs_arr[0], &ibufs_arr[1]);
-    }
-
-    for (int view_id = 0; view_id < totviews; view_id++) {
-      SeqRenderData localcontext = *context;
-      localcontext.view_id = view_id;
-
-      if (view_id != context->view_id) {
-        ibufs_arr[view_id] = seq_render_preprocess_ibuf(
-            &localcontext, seq, ibufs_arr[view_id], cfra, clock(), true, false);
-      }
-    }
-
-    /* Return the original requested ImBuf. */
-    ibuf = ibufs_arr[context->view_id];
-
-    /* Remove the others (decrease their refcount). */
-    for (int view_id = 0; view_id < totviews; view_id++) {
-      if (ibufs_arr[view_id] != ibuf) {
-        IMB_freeImBuf(ibufs_arr[view_id]);
-      }
-    }
-
-    MEM_freeN(ibufs_arr);
-  }
-  else {
-    ibuf = seq_render_image_strip_view(context, seq, name, prefix, ext, context->view_id);
-  }
-
-  if (ibuf == NULL) {
-    return NULL;
-  }
-
-  s_elem->orig_width = ibuf->x;
-  s_elem->orig_height = ibuf->y;
-
-  return ibuf;
-}
-
-static ImBuf *seq_render_movie_strip_custom_file_proxy(const SeqRenderData *context,
-                                                       Sequence *seq,
-                                                       int cfra)
-{
-  char name[PROXY_MAXFILE];
-  StripProxy *proxy = seq->strip->proxy;
-
-  if (proxy->anim == NULL) {
-    if (seq_proxy_get_custom_file_fname(seq, name, context->view_id)) {
-      proxy->anim = openanim(name, IB_rect, 0, seq->strip->colorspace_settings.name);
-    }
-    if (proxy->anim == NULL) {
-      return NULL;
-    }
-  }
-
-  int frameno = (int)BKE_sequencer_give_stripelem_index(seq, cfra) + seq->anim_startofs;
-  return IMB_anim_absolute(proxy->anim, frameno, IMB_TC_NONE, IMB_PROXY_NONE);
-}
-
-/**
- * Render individual view for multi-view or single (default view) for mono-view.
- */
-static ImBuf *seq_render_movie_strip_view(const SeqRenderData *context,
-                                          Sequence *seq,
-                                          float nr,
-                                          float cfra,
-                                          StripAnim *sanim,
-                                          bool *r_is_proxy_image)
-{
-  ImBuf *ibuf = NULL;
-  IMB_Proxy_Size psize = seq_rendersize_to_proxysize(context->preview_render_size);
-
-  IMB_anim_set_preseek(sanim->anim, seq->anim_preseek);
-
-  if (seq_can_use_proxy(seq, psize)) {
-    /* Try to get a proxy image.
-     * Movie proxies are handled by ImBuf module with exception of `custom file` setting. */
-    if (context->scene->ed->proxy_storage != SEQ_EDIT_PROXY_DIR_STORAGE &&
-        seq->strip->proxy->storage & SEQ_STORAGE_PROXY_CUSTOM_FILE) {
-      ibuf = seq_render_movie_strip_custom_file_proxy(context, seq, cfra);
-    }
-    else {
-      ibuf = IMB_anim_absolute(sanim->anim,
-                               nr + seq->anim_startofs,
-                               seq->strip->proxy ? seq->strip->proxy->tc : IMB_TC_RECORD_RUN,
-                               psize);
-    }
-
-    if (ibuf != NULL) {
-      *r_is_proxy_image = true;
-    }
-  }
-
-  /* Fetching for requested proxy size failed, try fetching the original instead. */
-  if (ibuf == NULL) {
-    ibuf = IMB_anim_absolute(sanim->anim,
-                             nr + seq->anim_startofs,
-                             seq->strip->proxy ? seq->strip->proxy->tc : IMB_TC_RECORD_RUN,
-                             IMB_PROXY_NONE);
-  }
-  if (ibuf == NULL) {
-    return NULL;
-  }
-
-  BKE_sequencer_imbuf_to_sequencer_space(context->scene, ibuf, false);
-
-  /* We don't need both (speed reasons)! */
-  if (ibuf->rect_float != NULL && ibuf->rect != NULL) {
-    imb_freerectImBuf(ibuf);
-  }
-
-  return ibuf;
-}
-
-static ImBuf *seq_render_movie_strip(
-    const SeqRenderData *context, Sequence *seq, float nr, float cfra, bool *r_is_proxy_image)
-{
-  /* Load all the videos. */
-  seq_open_anim_file(context->scene, seq, false);
-
-  ImBuf *ibuf = NULL;
-  StripAnim *sanim = seq->anims.first;
-  const int totfiles = seq_num_files(context->scene, seq->views_format, true);
-  bool is_multiview_render = (seq->flag & SEQ_USE_VIEWS) != 0 &&
-                             (context->scene->r.scemode & R_MULTIVIEW) != 0 &&
-                             BLI_listbase_count_at_most(&seq->anims, totfiles + 1) == totfiles;
-
-  if (is_multiview_render) {
-    ImBuf **ibuf_arr;
-    int totviews = BKE_scene_multiview_num_views_get(&context->scene->r);
-    ibuf_arr = MEM_callocN(sizeof(ImBuf *) * totviews, "Sequence Image Views Imbufs");
-    int ibuf_view_id;
-
-    for (ibuf_view_id = 0, sanim = seq->anims.first; sanim; sanim = sanim->next, ibuf_view_id++) {
-      if (sanim->anim) {
-        ibuf_arr[ibuf_view_id] = seq_render_movie_strip_view(
-            context, seq, nr, cfra, sanim, r_is_proxy_image);
-      }
-    }
-
-    if (seq->views_format == R_IMF_VIEWS_STEREO_3D) {
-      if (ibuf_arr[0] == NULL) {
-        /* Probably proxy hasn't been created yet. */
-        MEM_freeN(ibuf_arr);
-        return NULL;
-      }
-
-      IMB_ImBufFromStereo3d(seq->stereo3d_format, ibuf_arr[0], &ibuf_arr[0], &ibuf_arr[1]);
-    }
-
-    for (int view_id = 0; view_id < totviews; view_id++) {
-      SeqRenderData localcontext = *context;
-      localcontext.view_id = view_id;
-
-      if (view_id != context->view_id) {
-        ibuf_arr[view_id] = seq_render_preprocess_ibuf(
-            &localcontext, seq, ibuf_arr[view_id], cfra, clock(), true, false);
-      }
-    }
-
-    /* Return the original requested ImBuf. */
-    ibuf = ibuf_arr[context->view_id];
-
-    /* Remove the others (decrease their refcount). */
-    for (int view_id = 0; view_id < totviews; view_id++) {
-      if (ibuf_arr[view_id] != ibuf) {
-        IMB_freeImBuf(ibuf_arr[view_id]);
-      }
-    }
-
-    MEM_freeN(ibuf_arr);
-  }
-  else {
-    ibuf = seq_render_movie_strip_view(context, seq, nr, cfra, sanim, r_is_proxy_image);
-  }
-
-  if (ibuf == NULL) {
-    return NULL;
-  }
-
-  seq->strip->stripdata->orig_width = ibuf->x;
-  seq->strip->stripdata->orig_height = ibuf->y;
-
-  return ibuf;
-}
-
-static ImBuf *seq_get_movieclip_ibuf(Sequence *seq, MovieClipUser user)
-{
-  ImBuf *ibuf = NULL;
-  float tloc[2], tscale, tangle;
-  if (seq->clip_flag & SEQ_MOVIECLIP_RENDER_STABILIZED) {
-    ibuf = BKE_movieclip_get_stable_ibuf(seq->clip, &user, tloc, &tscale, &tangle, 0);
-  }
-  else {
-    ibuf = BKE_movieclip_get_ibuf_flag(seq->clip, &user, seq->clip->flag, MOVIECLIP_CACHE_SKIP);
-  }
-  return ibuf;
-}
-
-static ImBuf *seq_render_movieclip_strip(const SeqRenderData *context,
-                                         Sequence *seq,
-                                         float nr,
-                                         bool *r_is_proxy_image)
-{
-  ImBuf *ibuf = NULL;
-  MovieClipUser user;
-  IMB_Proxy_Size psize = seq_rendersize_to_proxysize(context->preview_render_size);
-
-  if (!seq->clip) {
-    return NULL;
-  }
-
-  memset(&user, 0, sizeof(MovieClipUser));
-
-  BKE_movieclip_user_set_frame(&user, nr + seq->anim_startofs + seq->clip->start_frame);
-
-  user.render_size = MCLIP_PROXY_RENDER_SIZE_FULL;
-  switch (psize) {
-    case IMB_PROXY_NONE:
-      user.render_size = MCLIP_PROXY_RENDER_SIZE_FULL;
-      break;
-    case IMB_PROXY_100:
-      user.render_size = MCLIP_PROXY_RENDER_SIZE_100;
-      break;
-    case IMB_PROXY_75:
-      user.render_size = MCLIP_PROXY_RENDER_SIZE_75;
-      break;
-    case IMB_PROXY_50:
-      user.render_size = MCLIP_PROXY_RENDER_SIZE_50;
-      break;
-    case IMB_PROXY_25:
-      user.render_size = MCLIP_PROXY_RENDER_SIZE_25;
-      break;
-  }
-
-  if (seq->clip_flag & SEQ_MOVIECLIP_RENDER_UNDISTORTED) {
-    user.render_flag |= MCLIP_PROXY_RENDER_UNDISTORT;
-  }
-
-  /* Try to get a proxy image. */
-  ibuf = seq_get_movieclip_ibuf(seq, user);
-
-  if (ibuf != NULL && psize != IMB_PROXY_NONE) {
-    *r_is_proxy_image = true;
-  }
-
-  /* If proxy is not found, grab full-size frame. */
-  if (ibuf == NULL) {
-    user.render_flag |= MCLIP_PROXY_RENDER_USE_FALLBACK_RENDER;
-    ibuf = seq_get_movieclip_ibuf(seq, user);
-  }
-
-  return ibuf;
-}
-
-static ImBuf *seq_render_mask(const SeqRenderData *context, Mask *mask, float nr, bool make_float)
-{
-  /* TODO - add option to rasterize to alpha imbuf? */
-  ImBuf *ibuf = NULL;
-  float *maskbuf;
-  int i;
-
-  if (!mask) {
-    return NULL;
-  }
-
-  AnimData *adt;
-  Mask *mask_temp;
-  MaskRasterHandle *mr_handle;
-
-  mask_temp = BKE_mask_copy_nolib(mask);
-
-  BKE_mask_evaluate(mask_temp, mask->sfra + nr, true);
-
-  /* anim-data */
-  adt = BKE_animdata_from_id(&mask->id);
-  const AnimationEvalContext anim_eval_context = BKE_animsys_eval_context_construct(
-      context->depsgraph, mask->sfra + nr);
-  BKE_animsys_evaluate_animdata(&mask_temp->id, adt, &anim_eval_context, ADT_RECALC_ANIM, false);
-
-  maskbuf = MEM_mallocN(sizeof(float) * context->rectx * context->recty, __func__);
-
-  mr_handle = BKE_maskrasterize_handle_new();
-
-  BKE_maskrasterize_handle_init(
-      mr_handle, mask_temp, context->rectx, context->recty, true, true, true);
-
-  BKE_mask_free(mask_temp);
-  MEM_freeN(mask_temp);
-
-  BKE_maskrasterize_buffer(mr_handle, context->rectx, context->recty, maskbuf);
-
-  BKE_maskrasterize_handle_free(mr_handle);
-
-  if (make_float) {
-    /* pixels */
-    const float *fp_src;
-    float *fp_dst;
-
-    ibuf = IMB_allocImBuf(context->rectx, context->recty, 32, IB_rectfloat);
-
-    fp_src = maskbuf;
-    fp_dst = ibuf->rect_float;
-    i = context->rectx * context->recty;
-    while (--i) {
-      fp_dst[0] = fp_dst[1] = fp_dst[2] = *fp_src;
-      fp_dst[3] = 1.0f;
-
-      fp_src += 1;
-      fp_dst += 4;
-    }
-  }
-  else {
-    /* pixels */
-    const float *fp_src;
-    unsigned char *ub_dst;
-
-    ibuf = IMB_allocImBuf(context->rectx, context->recty, 32, IB_rect);
-
-    fp_src = maskbuf;
-    ub_dst = (unsigned char *)ibuf->rect;
-    i = context->rectx * context->recty;
-    while (--i) {
-      ub_dst[0] = ub_dst[1] = ub_dst[2] = (unsigned char)(*fp_src * 255.0f); /* already clamped */
-      ub_dst[3] = 255;
-
-      fp_src += 1;
-      ub_dst += 4;
-    }
-  }
-
-  MEM_freeN(maskbuf);
-
-  return ibuf;
-}
-
-static ImBuf *seq_render_mask_strip(const SeqRenderData *context, Sequence *seq, float nr)
-{
-  bool make_float = (seq->flag & SEQ_MAKE_FLOAT) != 0;
-
-  return seq_render_mask(context, seq->mask, nr, make_float);
-}
-
-static ImBuf *seq_render_scene_strip(const SeqRenderData *context,
-                                     Sequence *seq,
-                                     float nr,
-                                     float cfra)
-{
-  ImBuf *ibuf = NULL;
-  double frame;
-  Object *camera;
-
-  struct {
-    int scemode;
-    int cfra;
-    float subframe;
-
-#ifdef DURIAN_CAMERA_SWITCH
-    int mode;
-#endif
-  } orig_data;
-
-  /* Old info:
-   * Hack! This function can be called from do_render_seq(), in that case
-   * the seq->scene can already have a Render initialized with same name,
-   * so we have to use a default name. (compositor uses scene name to
-   * find render).
-   * However, when called from within the UI (image preview in sequencer)
-   * we do want to use scene Render, that way the render result is defined
-   * for display in render/imagewindow
-   *
-   * Hmm, don't see, why we can't do that all the time,
-   * and since G.is_rendering is uhm, gone... (Peter)
-   */
-
-  /* New info:
-   * Using the same name for the renders works just fine as the do_render_seq()
-   * render is not used while the scene strips are rendered.
-   *
-   * However rendering from UI (through sequencer_preview_area_draw) can crash in
-   * very many cases since other renders (material preview, an actual render etc.)
-   * can be started while this sequence preview render is running. The only proper
-   * solution is to make the sequencer preview render a proper job, which can be
-   * stopped when needed. This would also give a nice progress bar for the preview
-   * space so that users know there's something happening.
-   *
-   * As a result the active scene now only uses OpenGL rendering for the sequencer
-   * preview. This is far from nice, but is the only way to prevent crashes at this
-   * time.
-   *
-   * -jahka
-   */
-
-  const bool is_rendering = G.is_rendering;
-  const bool is_background = G.background;
-  const bool do_seq_gl = is_rendering ? 0 : (context->scene->r.seq_prev_type) != OB_RENDER;
-  bool have_comp = false;
-  bool use_gpencil = true;
-  /* do we need to re-evaluate the frame after rendering? */
-  bool is_frame_update = false;
-  Scene *scene;
-  int is_thread_main = BLI_thread_is_main();
-
-  /* don't refer to seq->scene above this point!, it can be NULL */
-  if (seq->scene == NULL) {
-    return NULL;
-  }
-
-  /* Prevent rendering scene recursively. */
-  if (seq->scene == context->scene) {
-    return NULL;
-  }
-
-  scene = seq->scene;
-  frame = (double)scene->r.sfra + (double)nr + (double)seq->anim_startofs;
-
-#if 0 /* UNUSED */
-  have_seq = (scene->r.scemode & R_DOSEQ) && scene->ed && scene->ed->seqbase.first);
-#endif
-  have_comp = (scene->r.scemode & R_DOCOMP) && scene->use_nodes && scene->nodetree;
-
-  /* Get view layer for the strip. */
-  ViewLayer *view_layer = BKE_view_layer_default_render(scene);
-  /* Depsgraph will be NULL when doing rendering. */
-  Depsgraph *depsgraph = NULL;
-
-  orig_data.scemode = scene->r.scemode;
-  orig_data.cfra = scene->r.cfra;
-  orig_data.subframe = scene->r.subframe;
-#ifdef DURIAN_CAMERA_SWITCH
-  orig_data.mode = scene->r.mode;
-#endif
-
-  BKE_scene_frame_set(scene, frame);
-
-  if (seq->scene_camera) {
-    camera = seq->scene_camera;
-  }
-  else {
-    BKE_scene_camera_switch_update(scene);
-    camera = scene->camera;
-  }
-
-  if (have_comp == false && camera == NULL) {
-    goto finally;
-  }
-
-  if (seq->flag & SEQ_SCENE_NO_GPENCIL) {
-    use_gpencil = false;
-  }
-
-  /* prevent eternal loop */
-  scene->r.scemode &= ~R_DOSEQ;
-
-#ifdef DURIAN_CAMERA_SWITCH
-  /* stooping to new low's in hackyness :( */
-  scene->r.mode |= R_NO_CAMERA_SWITCH;
-#endif
-
-  is_frame_update = (orig_data.cfra != scene->r.cfra) || (orig_data.subframe != scene->r.subframe);
-
-  if ((sequencer_view3d_fn && do_seq_gl && camera) && is_thread_main) {
-    char err_out[256] = "unknown";
-    const int width = (scene->r.xsch * scene->r.size) / 100;
-    const int height = (scene->r.ysch * scene->r.size) / 100;
-    const char *viewname = BKE_scene_multiview_render_view_name_get(&scene->r, context->view_id);
-
-    unsigned int draw_flags = V3D_OFSDRAW_NONE;
-    draw_flags |= (use_gpencil) ? V3D_OFSDRAW_SHOW_ANNOTATION : 0;
-    draw_flags |= (context->scene->r.seq_flag & R_SEQ_OVERRIDE_SCENE_SETTINGS) ?
-                      V3D_OFSDRAW_OVERRIDE_SCENE_SETTINGS :
-                      0;
-
-    /* for old scene this can be uninitialized,
-     * should probably be added to do_versions at some point if the functionality stays */
-    if (context->scene->r.seq_prev_type == 0) {
-      context->scene->r.seq_prev_type = 3 /* == OB_SOLID */;
-    }
-
-    /* opengl offscreen render */
-    depsgraph = BKE_scene_ensure_depsgraph(context->bmain, scene, view_layer);
-    BKE_scene_graph_update_for_newframe(depsgraph);
-    ibuf = sequencer_view3d_fn(
-        /* set for OpenGL render (NULL when scrubbing) */
-        depsgraph,
-        scene,
-        &context->scene->display.shading,
-        context->scene->r.seq_prev_type,
-        camera,
-        width,
-        height,
-        IB_rect,
-        draw_flags,
-        scene->r.alphamode,
-        viewname,
-        context->gpu_offscreen,
-        err_out);
-    if (ibuf == NULL) {
-      fprintf(stderr, "seq_render_scene_strip failed to get opengl buffer: %s\n", err_out);
-    }
-  }
-  else {
-    Render *re = RE_GetSceneRender(scene);
-    const int totviews = BKE_scene_multiview_num_views_get(&scene->r);
-    ImBuf **ibufs_arr;
-
-    ibufs_arr = MEM_callocN(sizeof(ImBuf *) * totviews, "Sequence Image Views Imbufs");
-
-    /* XXX: this if can be removed when sequence preview rendering uses the job system
-     *
-     * disable rendered preview for sequencer while rendering -- it's very much possible
-     * that preview render will went into conflict with final render
-     *
-     * When rendering from command line renderer is called from main thread, in this
-     * case it's always safe to render scene here
-     */
-    if (!is_thread_main || is_rendering == false || is_background || context->for_render) {
-      if (re == NULL) {
-        re = RE_NewSceneRender(scene);
-      }
-
-      RE_RenderFrame(
-          re, context->bmain, scene, have_comp ? NULL : view_layer, camera, frame, false);
-
-      /* restore previous state after it was toggled on & off by RE_RenderFrame */
-      G.is_rendering = is_rendering;
-    }
-
-    for (int view_id = 0; view_id < totviews; view_id++) {
-      SeqRenderData localcontext = *context;
-      RenderResult rres;
-
-      localcontext.view_id = view_id;
-
-      RE_AcquireResultImage(re, &rres, view_id);
-
-      if (rres.rectf) {
-        ibufs_arr[view_id] = IMB_allocImBuf(rres.rectx, rres.recty, 32, IB_rectfloat);
-        memcpy(ibufs_arr[view_id]->rect_float,
-               rres.rectf,
-               sizeof(float[4]) * rres.rectx * rres.recty);
-
-        if (rres.rectz) {
-          addzbuffloatImBuf(ibufs_arr[view_id]);
-          memcpy(
-              ibufs_arr[view_id]->zbuf_float, rres.rectz, sizeof(float) * rres.rectx * rres.recty);
-        }
-
-        /* float buffers in the sequencer are not linear */
-        BKE_sequencer_imbuf_to_sequencer_space(context->scene, ibufs_arr[view_id], false);
-      }
-      else if (rres.rect32) {
-        ibufs_arr[view_id] = IMB_allocImBuf(rres.rectx, rres.recty, 32, IB_rect);
-        memcpy(ibufs_arr[view_id]->rect, rres.rect32, 4 * rres.rectx * rres.recty);
-      }
-
-      if (view_id != context->view_id) {
-        BKE_sequencer_cache_put(
-            &localcontext, seq, cfra, SEQ_CACHE_STORE_RAW, ibufs_arr[view_id], 0, false);
-      }
-
-      RE_ReleaseResultImage(re);
-    }
-
-    /* return the original requested ImBuf */
-    ibuf = ibufs_arr[context->view_id];
-
-    /* "remove" the others (decrease their refcount) */
-    for (int view_id = 0; view_id < totviews; view_id++) {
-      if (ibufs_arr[view_id] != ibuf) {
-        IMB_freeImBuf(ibufs_arr[view_id]);
-      }
-    }
-    MEM_freeN(ibufs_arr);
-  }
-
-finally:
-  /* restore */
-  scene->r.scemode = orig_data.scemode;
-  scene->r.cfra = orig_data.cfra;
-  scene->r.subframe = orig_data.subframe;
-
-  if (is_frame_update && (depsgraph != NULL)) {
-    BKE_scene_graph_update_for_newframe(depsgraph);
-  }
-
-#ifdef DURIAN_CAMERA_SWITCH
-  /* stooping to new low's in hackyness :( */
-  scene->r.mode &= orig_data.mode | ~R_NO_CAMERA_SWITCH;
-#endif
-
-  return ibuf;
-}
-
-/**
- * Used for meta-strips & scenes with #SEQ_SCENE_STRIPS flag set.
- */
-static ImBuf *do_render_strip_seqbase(const SeqRenderData *context,
-                                      SeqRenderState *state,
-                                      Sequence *seq,
-                                      float nr)
-{
-  ImBuf *ibuf = NULL;
-  ListBase *seqbase = NULL;
-  int offset;
-
-  seqbase = BKE_sequence_seqbase_get(seq, &offset);
-
-  if (seqbase && !BLI_listbase_is_empty(seqbase)) {
-
-    if (seq->flag & SEQ_SCENE_STRIPS && seq->scene) {
-      BKE_animsys_evaluate_all_animation(context->bmain, context->depsgraph, nr + offset);
-    }
-
-    ibuf = seq_render_strip_stack(context,
-                                  state,
-                                  seqbase,
-                                  /* scene strips don't have their start taken into account */
-                                  nr + offset,
-                                  0);
-  }
-
-  return ibuf;
-}
-
-static ImBuf *do_render_strip_uncached(const SeqRenderData *context,
-                                       SeqRenderState *state,
-                                       Sequence *seq,
-                                       float cfra,
-                                       bool *r_is_proxy_image)
-{
-  ImBuf *ibuf = NULL;
-  float nr = BKE_sequencer_give_stripelem_index(seq, cfra);
-  int type = (seq->type & SEQ_TYPE_EFFECT) ? SEQ_TYPE_EFFECT : seq->type;
-  switch (type) {
-    case SEQ_TYPE_META: {
-      ibuf = do_render_strip_seqbase(context, state, seq, nr);
-      break;
-    }
-
-    case SEQ_TYPE_SCENE: {
-      if (seq->flag & SEQ_SCENE_STRIPS) {
-        if (seq->scene && (context->scene != seq->scene)) {
-          /* recursive check */
-          if (BLI_linklist_index(state->scene_parents, seq->scene) != -1) {
-            break;
-          }
-          LinkNode scene_parent = {
-              .next = state->scene_parents,
-              .link = seq->scene,
-          };
-          state->scene_parents = &scene_parent;
-          /* end check */
-
-          /* Use the Scene Seq's scene for the context when rendering the scene's sequences
-           * (necessary for Multicam Selector among others).
-           */
-          SeqRenderData local_context = *context;
-          local_context.scene = seq->scene;
-          local_context.skip_cache = true;
-
-          ibuf = do_render_strip_seqbase(&local_context, state, seq, nr);
-
-          /* step back in the list */
-          state->scene_parents = state->scene_parents->next;
-        }
-      }
-      else {
-        /* scene can be NULL after deletions */
-        ibuf = seq_render_scene_strip(context, seq, nr, cfra);
-      }
-
-      break;
-    }
-
-    case SEQ_TYPE_EFFECT: {
-      ibuf = seq_render_effect_strip_impl(context, state, seq, cfra);
-      break;
-    }
-
-    case SEQ_TYPE_IMAGE: {
-      ibuf = seq_render_image_strip(context, seq, nr, cfra, r_is_proxy_image);
-      break;
-    }
-
-    case SEQ_TYPE_MOVIE: {
-      ibuf = seq_render_movie_strip(context, seq, nr, cfra, r_is_proxy_image);
-      break;
-    }
-
-    case SEQ_TYPE_MOVIECLIP: {
-      ibuf = seq_render_movieclip_strip(context, seq, nr, r_is_proxy_image);
-
-      if (ibuf) {
-        /* duplicate frame so movie cache wouldn't be confused by sequencer's stuff */
-        ImBuf *i = IMB_dupImBuf(ibuf);
-        IMB_freeImBuf(ibuf);
-        ibuf = i;
-
-        if (ibuf->rect_float) {
-          BKE_sequencer_imbuf_to_sequencer_space(context->scene, ibuf, false);
-        }
-      }
-
-      break;
-    }
-
-    case SEQ_TYPE_MASK: {
-      /* ibuf is always new */
-      ibuf = seq_render_mask_strip(context, seq, nr);
-      break;
-    }
-  }
-
-  if (ibuf) {
-    sequencer_imbuf_assign_spaces(context->scene, ibuf);
-  }
-
-  return ibuf;
-}
-
-/* Estimate time spent by the program rendering the strip */
-static clock_t seq_estimate_render_cost_begin(void)
-{
-  return clock();
-}
-
-static float seq_estimate_render_cost_end(Scene *scene, clock_t begin)
-{
-  clock_t end = clock();
-  float time_spent = (float)(end - begin);
-  float time_max = (1.0f / scene->r.frs_sec) * CLOCKS_PER_SEC;
-
-  if (time_max != 0) {
-    return time_spent / time_max;
-  }
-
-  return 1;
-}
-
-static ImBuf *seq_render_preprocess_ibuf(const SeqRenderData *context,
-                                         Sequence *seq,
-                                         ImBuf *ibuf,
-                                         float cfra,
-                                         clock_t begin,
-                                         bool use_preprocess,
-                                         const bool is_proxy_image)
-{
-  if (context->is_proxy_render == false &&
-      (ibuf->x != context->rectx || ibuf->y != context->recty)) {
-    use_preprocess = true;
-  }
-
-  if (use_preprocess) {
-    float cost = seq_estimate_render_cost_end(context->scene, begin);
-
-    /* TODO(Richard): It should be possible to store in cache if image is proxy,
-     * but it adds quite a bit of complexity. Since proxies are fast to read, I would
-     * rather simplify existing code a bit. */
-    if (!is_proxy_image) {
-      BKE_sequencer_cache_put(context, seq, cfra, SEQ_CACHE_STORE_RAW, ibuf, cost, false);
-    }
-
-    /* Reset timer so we can get partial render time. */
-    begin = seq_estimate_render_cost_begin();
-    ibuf = input_preprocess(context, seq, cfra, ibuf, is_proxy_image);
-  }
-
-  float cost = seq_estimate_render_cost_end(context->scene, begin);
-  BKE_sequencer_cache_put(context, seq, cfra, SEQ_CACHE_STORE_PREPROCESSED, ibuf, cost, false);
-  return ibuf;
-}
-
-static ImBuf *seq_render_strip(const SeqRenderData *context,
-                               SeqRenderState *state,
-                               Sequence *seq,
-                               float cfra)
-{
-  ImBuf *ibuf = NULL;
-  bool use_preprocess = false;
-  bool is_proxy_image = false;
-
-  clock_t begin = seq_estimate_render_cost_begin();
-
-  ibuf = BKE_sequencer_cache_get(context, seq, cfra, SEQ_CACHE_STORE_PREPROCESSED, false);
-  if (ibuf != NULL) {
-    return ibuf;
-  }
-
-  ibuf = BKE_sequencer_cache_get(context, seq, cfra, SEQ_CACHE_STORE_RAW, false);
-  if (ibuf == NULL) {
-    ibuf = do_render_strip_uncached(context, state, seq, cfra, &is_proxy_image);
-  }
-
-  if (ibuf) {
-    use_preprocess = BKE_sequencer_input_have_to_preprocess(context, seq, cfra);
-    ibuf = seq_render_preprocess_ibuf(
-        context, seq, ibuf, cfra, begin, use_preprocess, is_proxy_image);
-  }
-
-  if (ibuf == NULL) {
-    ibuf = IMB_allocImBuf(context->rectx, context->recty, 32, IB_rect);
-    sequencer_imbuf_assign_spaces(context->scene, ibuf);
-  }
-
-  return ibuf;
-}
-
-/*********************** strip stack rendering functions *************************/
-
-static bool seq_must_swap_input_in_blend_mode(Sequence *seq)
-{
-  bool swap_input = false;
-
-  /* bad hack, to fix crazy input ordering of
-   * those two effects */
-
-  if (ELEM(seq->blend_mode, SEQ_TYPE_ALPHAOVER, SEQ_TYPE_ALPHAUNDER, SEQ_TYPE_OVERDROP)) {
-    swap_input = true;
-  }
-
-  return swap_input;
-}
-
-static int seq_get_early_out_for_blend_mode(Sequence *seq)
-{
-  struct SeqEffectHandle sh = BKE_sequence_get_blend(seq);
-  float facf = seq->blend_opacity / 100.0f;
-  int early_out = sh.early_out(seq, facf, facf);
-
-  if (ELEM(early_out, EARLY_DO_EFFECT, EARLY_NO_INPUT)) {
-    return early_out;
-  }
-
-  if (seq_must_swap_input_in_blend_mode(seq)) {
-    if (early_out == EARLY_USE_INPUT_2) {
-      return EARLY_USE_INPUT_1;
-    }
-    if (early_out == EARLY_USE_INPUT_1) {
-      return EARLY_USE_INPUT_2;
-    }
-  }
-  return early_out;
-}
-
-static ImBuf *seq_render_strip_stack_apply_effect(
-    const SeqRenderData *context, Sequence *seq, float cfra, ImBuf *ibuf1, ImBuf *ibuf2)
-{
-  ImBuf *out;
-  struct SeqEffectHandle sh = BKE_sequence_get_blend(seq);
-  float facf = seq->blend_opacity / 100.0f;
-  int swap_input = seq_must_swap_input_in_blend_mode(seq);
-
-  if (swap_input) {
-    if (sh.multithreaded) {
-      out = BKE_sequencer_effect_execute_threaded(
-          &sh, context, seq, cfra, facf, facf, ibuf2, ibuf1, NULL);
-    }
-    else {
-      out = sh.execute(context, seq, cfra, facf, facf, ibuf2, ibuf1, NULL);
-    }
-  }
-  else {
-    if (sh.multithreaded) {
-      out = BKE_sequencer_effect_execute_threaded(
-          &sh, context, seq, cfra, facf, facf, ibuf1, ibuf2, NULL);
-    }
-    else {
-      out = sh.execute(context, seq, cfra, facf, facf, ibuf1, ibuf2, NULL);
-    }
-  }
-
-  return out;
-}
-
-static ImBuf *seq_render_strip_stack(const SeqRenderData *context,
-                                     SeqRenderState *state,
-                                     ListBase *seqbasep,
-                                     float cfra,
-                                     int chanshown)
-{
-  Sequence *seq_arr[MAXSEQ + 1];
-  int count;
-  int i;
-  ImBuf *out = NULL;
-  clock_t begin;
-
-  count = BKE_sequencer_get_shown_sequences(seqbasep, cfra, chanshown, (Sequence **)&seq_arr);
-
-  if (count == 0) {
-    return NULL;
-  }
-
-  for (i = count - 1; i >= 0; i--) {
-    int early_out;
-    Sequence *seq = seq_arr[i];
-
-    out = BKE_sequencer_cache_get(context, seq, cfra, SEQ_CACHE_STORE_COMPOSITE, false);
-
-    if (out) {
-      break;
-    }
-    if (seq->blend_mode == SEQ_BLEND_REPLACE) {
-      out = seq_render_strip(context, state, seq, cfra);
-      break;
-    }
-
-    early_out = seq_get_early_out_for_blend_mode(seq);
-
-    switch (early_out) {
-      case EARLY_NO_INPUT:
-      case EARLY_USE_INPUT_2:
-        out = seq_render_strip(context, state, seq, cfra);
-        break;
-      case EARLY_USE_INPUT_1:
-        if (i == 0) {
-          out = IMB_allocImBuf(context->rectx, context->recty, 32, IB_rect);
-        }
-        break;
-      case EARLY_DO_EFFECT:
-        if (i == 0) {
-          begin = seq_estimate_render_cost_begin();
-
-          ImBuf *ibuf1 = IMB_allocImBuf(context->rectx, context->recty, 32, IB_rect);
-          ImBuf *ibuf2 = seq_render_strip(context, state, seq, cfra);
-
-          out = seq_render_strip_stack_apply_effect(context, seq, cfra, ibuf1, ibuf2);
-
-          float cost = seq_estimate_render_cost_end(context->scene, begin);
-          BKE_sequencer_cache_put(
-              context, seq_arr[i], cfra, SEQ_CACHE_STORE_COMPOSITE, out, cost, false);
-
-          IMB_freeImBuf(ibuf1);
-          IMB_freeImBuf(ibuf2);
-        }
-        break;
-    }
-    if (out) {
-      break;
-    }
-  }
-
-  i++;
-  for (; i < count; i++) {
-    begin = seq_estimate_render_cost_begin();
-    Sequence *seq = seq_arr[i];
-
-    if (seq_get_early_out_for_blend_mode(seq) == EARLY_DO_EFFECT) {
-      ImBuf *ibuf1 = out;
-      ImBuf *ibuf2 = seq_render_strip(context, state, seq, cfra);
-
-      out = seq_render_strip_stack_apply_effect(context, seq, cfra, ibuf1, ibuf2);
-
-      IMB_freeImBuf(ibuf1);
-      IMB_freeImBuf(ibuf2);
-    }
-
-    float cost = seq_estimate_render_cost_end(context->scene, begin);
-    BKE_sequencer_cache_put(
-        context, seq_arr[i], cfra, SEQ_CACHE_STORE_COMPOSITE, out, cost, false);
-  }
-
-  return out;
-}
-
-/*
- * returned ImBuf is refed!
- * you have to free after usage!
- */
-
-ImBuf *BKE_sequencer_give_ibuf(const SeqRenderData *context, float cfra, int chanshown)
-{
-  Scene *scene = context->scene;
-  Editing *ed = BKE_sequencer_editing_get(scene, false);
-  ListBase *seqbasep;
-
-  if (ed == NULL) {
-    return NULL;
-  }
-
-  if ((chanshown < 0) && !BLI_listbase_is_empty(&ed->metastack)) {
-    int count = BLI_listbase_count(&ed->metastack);
-    count = max_ii(count + chanshown, 0);
-    seqbasep = ((MetaStack *)BLI_findlink(&ed->metastack, count))->oldbasep;
-  }
-  else {
-    seqbasep = ed->seqbasep;
-  }
-
-  SeqRenderState state;
-  sequencer_state_init(&state);
-  ImBuf *out = NULL;
-  Sequence *seq_arr[MAXSEQ + 1];
-  int count;
-
-  count = BKE_sequencer_get_shown_sequences(seqbasep, cfra, chanshown, seq_arr);
-
-  if (count) {
-    out = BKE_sequencer_cache_get(
-        context, seq_arr[count - 1], cfra, SEQ_CACHE_STORE_FINAL_OUT, false);
-  }
-
-  BKE_sequencer_cache_free_temp_cache(context->scene, context->task_id, cfra);
-
-  clock_t begin = seq_estimate_render_cost_begin();
-  float cost = 0;
-
-  if (count && !out) {
-    BLI_mutex_lock(&seq_render_mutex);
-    out = seq_render_strip_stack(context, &state, seqbasep, cfra, chanshown);
-    cost = seq_estimate_render_cost_end(context->scene, begin);
-
-    if (context->is_prefetch_render) {
-      BKE_sequencer_cache_put(
-          context, seq_arr[count - 1], cfra, SEQ_CACHE_STORE_FINAL_OUT, out, cost, false);
-    }
-    else {
-      BKE_sequencer_cache_put_if_possible(
-          context, seq_arr[count - 1], cfra, SEQ_CACHE_STORE_FINAL_OUT, out, cost, false);
-    }
-    BLI_mutex_unlock(&seq_render_mutex);
-  }
-
-  BKE_sequencer_prefetch_start(context, cfra, cost);
-
-  return out;
-}
-
-ImBuf *BKE_sequencer_give_ibuf_seqbase(const SeqRenderData *context,
-                                       float cfra,
-                                       int chan_shown,
-                                       ListBase *seqbasep)
-{
-  SeqRenderState state;
-  sequencer_state_init(&state);
-
-  return seq_render_strip_stack(context, &state, seqbasep, cfra, chan_shown);
-}
-
-ImBuf *BKE_sequencer_give_ibuf_direct(const SeqRenderData *context, float cfra, Sequence *seq)
-{
-  SeqRenderState state;
-  sequencer_state_init(&state);
-
-  ImBuf *ibuf = seq_render_strip(context, &state, seq, cfra);
-
-  return ibuf;
-}
-
-/* check whether sequence cur depends on seq */
-bool BKE_sequence_check_depend(Sequence *seq, Sequence *cur)
-{
-  if (cur->seq1 == seq || cur->seq2 == seq || cur->seq3 == seq) {
-    return true;
-  }
-
-  /* sequences are not intersecting in time, assume no dependency exists between them */
-  if (cur->enddisp < seq->startdisp || cur->startdisp > seq->enddisp) {
-    return false;
-  }
-
-  /* checking sequence is below reference one, not dependent on it */
-  if (cur->machine < seq->machine) {
-    return false;
-  }
-
-  /* sequence is not blending with lower machines, no dependency here occurs
-   * check for non-effects only since effect could use lower machines as input
-   */
-  if ((cur->type & SEQ_TYPE_EFFECT) == 0 &&
-      ((cur->blend_mode == SEQ_BLEND_REPLACE) ||
-       (cur->blend_mode == SEQ_TYPE_CROSS && cur->blend_opacity == 100.0f))) {
-    return false;
-  }
-
-  return true;
-}
-
-static void sequence_do_invalidate_dependent(Scene *scene, Sequence *seq, ListBase *seqbase)
-{
-  Sequence *cur;
-
-  for (cur = seqbase->first; cur; cur = cur->next) {
-    if (cur == seq) {
-      continue;
-    }
-
-    if (BKE_sequence_check_depend(seq, cur)) {
-      /* Effect must be invalidated completely if they depend on invalidated seq. */
-      if ((cur->type & SEQ_TYPE_EFFECT) != 0) {
-        BKE_sequencer_cache_cleanup_sequence(scene, cur, seq, SEQ_CACHE_ALL_TYPES, false);
-      }
-      else {
-        /* In case of alpha over for example only invalidate composite image */
-        BKE_sequencer_cache_cleanup_sequence(
-            scene, cur, seq, SEQ_CACHE_STORE_COMPOSITE | SEQ_CACHE_STORE_FINAL_OUT, false);
-      }
-    }
-
-    if (cur->seqbase.first) {
-      sequence_do_invalidate_dependent(scene, seq, &cur->seqbase);
-    }
-  }
-}
-
-static void sequence_invalidate_cache(Scene *scene,
-                                      Sequence *seq,
-                                      bool invalidate_self,
-                                      int invalidate_types)
-{
-  Editing *ed = scene->ed;
-
-  if (invalidate_self) {
-    BKE_sequence_free_anim(seq);
-    BKE_sequencer_cache_cleanup_sequence(scene, seq, seq, invalidate_types, false);
-  }
-
-  if (seq->effectdata && seq->type == SEQ_TYPE_SPEED) {
-    BKE_sequence_effect_speed_rebuild_map(scene, seq, true);
-  }
-
-  sequence_do_invalidate_dependent(scene, seq, &ed->seqbase);
-  DEG_id_tag_update(&scene->id, ID_RECALC_SEQUENCER_STRIPS);
-  BKE_sequencer_prefetch_stop(scene);
-}
-
-void BKE_sequence_invalidate_cache_in_range(Scene *scene,
-                                            Sequence *seq,
-                                            Sequence *range_mask,
-                                            int invalidate_types)
-{
-  BKE_sequencer_cache_cleanup_sequence(scene, seq, range_mask, invalidate_types, true);
-}
-
-void BKE_sequence_invalidate_cache_raw(Scene *scene, Sequence *seq)
-{
-  sequence_invalidate_cache(scene, seq, true, SEQ_CACHE_ALL_TYPES);
-}
-
-void BKE_sequence_invalidate_cache_preprocessed(Scene *scene, Sequence *seq)
-{
-  sequence_invalidate_cache(scene,
-                            seq,
-                            true,
-                            SEQ_CACHE_STORE_PREPROCESSED | SEQ_CACHE_STORE_COMPOSITE |
-                                SEQ_CACHE_STORE_FINAL_OUT);
-}
-
-void BKE_sequence_invalidate_cache_composite(Scene *scene, Sequence *seq)
-{
-  if (ELEM(seq->type, SEQ_TYPE_SOUND_RAM, SEQ_TYPE_SOUND_HD)) {
-    return;
-  }
-
-  sequence_invalidate_cache(
-      scene, seq, true, SEQ_CACHE_STORE_COMPOSITE | SEQ_CACHE_STORE_FINAL_OUT);
-}
-
-void BKE_sequence_invalidate_dependent(Scene *scene, Sequence *seq)
-{
-  if (ELEM(seq->type, SEQ_TYPE_SOUND_RAM, SEQ_TYPE_SOUND_HD)) {
-    return;
-  }
-
-  sequence_invalidate_cache(
-      scene, seq, false, SEQ_CACHE_STORE_COMPOSITE | SEQ_CACHE_STORE_FINAL_OUT);
-}
-
-static void invalidate_scene_strips(Scene *scene, Scene *scene_target, ListBase *seqbase)
-{
-  for (Sequence *seq = seqbase->first; seq != NULL; seq = seq->next) {
-    if (seq->scene == scene_target) {
-      BKE_sequence_invalidate_cache_raw(scene, seq);
-    }
-
-    if (seq->seqbase.first != NULL) {
-      invalidate_scene_strips(scene, scene_target, &seq->seqbase);
-    }
-  }
-}
-
-void BKE_sequence_invalidate_scene_strips(Main *bmain, Scene *scene_target)
-{
-  for (Scene *scene = bmain->scenes.first; scene != NULL; scene = scene->id.next) {
-    if (scene->ed != NULL) {
-      invalidate_scene_strips(scene, scene_target, &scene->ed->seqbase);
-    }
-  }
-}
-
-static void invalidate_movieclip_strips(Scene *scene, MovieClip *clip_target, ListBase *seqbase)
-{
-  for (Sequence *seq = seqbase->first; seq != NULL; seq = seq->next) {
-    if (seq->clip == clip_target) {
-      BKE_sequence_invalidate_cache_raw(scene, seq);
-    }
-
-    if (seq->seqbase.first != NULL) {
-      invalidate_movieclip_strips(scene, clip_target, &seq->seqbase);
-    }
-  }
-}
-
-void BKE_sequence_invalidate_movieclip_strips(Main *bmain, MovieClip *clip_target)
-{
-  for (Scene *scene = bmain->scenes.first; scene != NULL; scene = scene->id.next) {
-    if (scene->ed != NULL) {
-      invalidate_movieclip_strips(scene, clip_target, &scene->ed->seqbase);
-    }
-  }
-}
-
-void BKE_sequencer_free_imbuf(Scene *scene, ListBase *seqbase, bool for_render)
-{
-  if (scene->ed == NULL) {
-    return;
-  }
-
-  Sequence *seq;
-
-  BKE_sequencer_cache_cleanup(scene);
-  BKE_sequencer_prefetch_stop(scene);
-
-  for (seq = seqbase->first; seq; seq = seq->next) {
-    if (for_render && CFRA >= seq->startdisp && CFRA <= seq->enddisp) {
-      continue;
-    }
-
-    if (seq->strip) {
-      if (seq->type == SEQ_TYPE_MOVIE) {
-        BKE_sequence_free_anim(seq);
-      }
-      if (seq->type == SEQ_TYPE_SPEED) {
-        BKE_sequence_effect_speed_rebuild_map(scene, seq, true);
-      }
-    }
-    if (seq->type == SEQ_TYPE_META) {
-      BKE_sequencer_free_imbuf(scene, &seq->seqbase, for_render);
-    }
-    if (seq->type == SEQ_TYPE_SCENE) {
-      /* FIXME: recurs downwards,
-       * but do recurs protection somehow! */
-    }
-  }
-}
-
-static bool update_changed_seq_recurs(
-    Scene *scene, Sequence *seq, Sequence *changed_seq, int len_change, int ibuf_change)
-{
-  Sequence *subseq;
-  bool free_imbuf = false;
-
-  /* recurs downwards to see if this seq depends on the changed seq */
-
-  if (seq == NULL) {
-    return false;
-  }
-
-  if (seq == changed_seq) {
-    free_imbuf = true;
-  }
-
-  for (subseq = seq->seqbase.first; subseq; subseq = subseq->next) {
-    if (update_changed_seq_recurs(scene, subseq, changed_seq, len_change, ibuf_change)) {
-      free_imbuf = true;
-    }
-  }
-
-  if (seq->seq1) {
-    if (update_changed_seq_recurs(scene, seq->seq1, changed_seq, len_change, ibuf_change)) {
-      free_imbuf = true;
-    }
-  }
-  if (seq->seq2 && (seq->seq2 != seq->seq1)) {
-    if (update_changed_seq_recurs(scene, seq->seq2, changed_seq, len_change, ibuf_change)) {
-      free_imbuf = true;
-    }
-  }
-  if (seq->seq3 && (seq->seq3 != seq->seq1) && (seq->seq3 != seq->seq2)) {
-    if (update_changed_seq_recurs(scene, seq->seq3, changed_seq, len_change, ibuf_change)) {
-      free_imbuf = true;
-    }
-  }
-
-  if (free_imbuf) {
-    if (ibuf_change) {
-      if (seq->type == SEQ_TYPE_MOVIE) {
-        BKE_sequence_free_anim(seq);
-      }
-      else if (seq->type == SEQ_TYPE_SPEED) {
-        BKE_sequence_effect_speed_rebuild_map(scene, seq, true);
-      }
-    }
-
-    if (len_change) {
-      BKE_sequence_calc(scene, seq);
-    }
-  }
-
-  return free_imbuf;
-}
-
-void BKE_sequencer_update_changed_seq_and_deps(Scene *scene,
-                                               Sequence *changed_seq,
-                                               int len_change,
-                                               int ibuf_change)
-{
-  Editing *ed = BKE_sequencer_editing_get(scene, false);
-  Sequence *seq;
-
-  if (ed == NULL) {
-    return;
-  }
-
-  for (seq = ed->seqbase.first; seq; seq = seq->next) {
-    update_changed_seq_recurs(scene, seq, changed_seq, len_change, ibuf_change);
-  }
-}
-
-/* seq funcs's for transforming internally
- * notice the difference between start/end and left/right.
- *
- * left and right are the bounds at which the sequence is rendered,
- * start and end are from the start and fixed length of the sequence.
- */
-static int seq_tx_get_start(Sequence *seq)
-{
-  return seq->start;
-}
-static int seq_tx_get_end(Sequence *seq)
-{
-  return seq->start + seq->len;
-}
-
-int BKE_sequence_tx_get_final_left(Sequence *seq, bool metaclip)
-{
-  if (metaclip && seq->tmp) {
-    /* return the range clipped by the parents range */
-    return max_ii(BKE_sequence_tx_get_final_left(seq, false),
-                  BKE_sequence_tx_get_final_left((Sequence *)seq->tmp, true));
-  }
-
-  return (seq->start - seq->startstill) + seq->startofs;
-}
-int BKE_sequence_tx_get_final_right(Sequence *seq, bool metaclip)
-{
-  if (metaclip && seq->tmp) {
-    /* return the range clipped by the parents range */
-    return min_ii(BKE_sequence_tx_get_final_right(seq, false),
-                  BKE_sequence_tx_get_final_right((Sequence *)seq->tmp, true));
-  }
-
-  return ((seq->start + seq->len) + seq->endstill) - seq->endofs;
-}
-
-void BKE_sequence_tx_set_final_left(Sequence *seq, int val)
-{
-  if (val < (seq)->start) {
-    seq->startstill = abs(val - (seq)->start);
-    seq->startofs = 0;
-  }
-  else {
-    seq->startofs = abs(val - (seq)->start);
-    seq->startstill = 0;
-  }
-}
-
-void BKE_sequence_tx_set_final_right(Sequence *seq, int val)
-{
-  if (val > (seq)->start + (seq)->len) {
-    seq->endstill = abs(val - (seq->start + (seq)->len));
-    seq->endofs = 0;
-  }
-  else {
-    seq->endofs = abs(val - ((seq)->start + (seq)->len));
-    seq->endstill = 0;
-  }
-}
-
-/* used so we can do a quick check for single image seq
- * since they work a bit differently to normal image seq's (during transform) */
-bool BKE_sequence_single_check(Sequence *seq)
-{
-  return ((seq->len == 1) &&
-          (seq->type == SEQ_TYPE_IMAGE ||
-           ((seq->type & SEQ_TYPE_EFFECT) && BKE_sequence_effect_get_num_inputs(seq->type) == 0)));
-}
-
-/* check if the selected seq's reference unselected seq's */
-bool BKE_sequence_base_isolated_sel_check(ListBase *seqbase)
-{
-  Sequence *seq;
-  /* is there more than 1 select */
-  bool ok = false;
-
-  for (seq = seqbase->first; seq; seq = seq->next) {
-    if (seq->flag & SELECT) {
-      ok = true;
-      break;
-    }
-  }
-
-  if (ok == false) {
-    return false;
-  }
-
-  /* test relationships */
-  for (seq = seqbase->first; seq; seq = seq->next) {
-    if ((seq->type & SEQ_TYPE_EFFECT) == 0) {
-      continue;
-    }
-
-    if (seq->flag & SELECT) {
-      if ((seq->seq1 && (seq->seq1->flag & SELECT) == 0) ||
-          (seq->seq2 && (seq->seq2->flag & SELECT) == 0) ||
-          (seq->seq3 && (seq->seq3->flag & SELECT) == 0)) {
-        return false;
-      }
-    }
-    else {
-      if ((seq->seq1 && (seq->seq1->flag & SELECT)) || (seq->seq2 && (seq->seq2->flag & SELECT)) ||
-          (seq->seq3 && (seq->seq3->flag & SELECT))) {
-        return false;
-      }
-    }
-  }
-
-  return true;
-}
-
-/* use to impose limits when dragging/extending - so impossible situations don't happen
- * Cant use the SEQ_LEFTSEL and SEQ_LEFTSEL directly because the strip may be in a metastrip */
-void BKE_sequence_tx_handle_xlimits(Sequence *seq, int leftflag, int rightflag)
-{
-  if (leftflag) {
-    if (BKE_sequence_tx_get_final_left(seq, false) >=
-        BKE_sequence_tx_get_final_right(seq, false)) {
-      BKE_sequence_tx_set_final_left(seq, BKE_sequence_tx_get_final_right(seq, false) - 1);
-    }
-
-    if (BKE_sequence_single_check(seq) == 0) {
-      if (BKE_sequence_tx_get_final_left(seq, false) >= seq_tx_get_end(seq)) {
-        BKE_sequence_tx_set_final_left(seq, seq_tx_get_end(seq) - 1);
-      }
-
-      /* doesn't work now - TODO */
-#if 0
-      if (seq_tx_get_start(seq) >= seq_tx_get_final_right(seq, 0)) {
-        int ofs;
-        ofs = seq_tx_get_start(seq) - seq_tx_get_final_right(seq, 0);
-        seq->start -= ofs;
-        seq_tx_set_final_left(seq, seq_tx_get_final_left(seq, 0) + ofs);
-      }
-#endif
-    }
-  }
-
-  if (rightflag) {
-    if (BKE_sequence_tx_get_final_right(seq, false) <=
-        BKE_sequence_tx_get_final_left(seq, false)) {
-      BKE_sequence_tx_set_final_right(seq, BKE_sequence_tx_get_final_left(seq, false) + 1);
-    }
-
-    if (BKE_sequence_single_check(seq) == 0) {
-      if (BKE_sequence_tx_get_final_right(seq, false) <= seq_tx_get_start(seq)) {
-        BKE_sequence_tx_set_final_right(seq, seq_tx_get_start(seq) + 1);
-      }
-    }
-  }
-
-  /* sounds cannot be extended past their endpoints */
-  if (seq->type == SEQ_TYPE_SOUND_RAM) {
-    seq->startstill = 0;
-    seq->endstill = 0;
-  }
-}
-
-void BKE_sequence_single_fix(Sequence *seq)
-{
-  int left, start, offset;
-  if (!BKE_sequence_single_check(seq)) {
-    return;
-  }
-
-  /* make sure the image is always at the start since there is only one,
-   * adjusting its start should be ok */
-  left = BKE_sequence_tx_get_final_left(seq, false);
-  start = seq->start;
-  if (start != left) {
-    offset = left - start;
-    BKE_sequence_tx_set_final_left(seq, BKE_sequence_tx_get_final_left(seq, false) - offset);
-    BKE_sequence_tx_set_final_right(seq, BKE_sequence_tx_get_final_right(seq, false) - offset);
-    seq->start += offset;
-  }
-}
-
-bool BKE_sequence_tx_test(Sequence *seq)
-{
-  return !(seq->type & SEQ_TYPE_EFFECT) || (BKE_sequence_effect_get_num_inputs(seq->type) == 0);
-}
-
-/**
- * Return \a true if given \a seq needs a complete cleanup of its cache when it is transformed.
- *
- * Some (effect) strip types need a complete recache of themselves when they are transformed,
- * because they do not 'contain' anything and do not have any explicit relations to other strips.
- */
-bool BKE_sequence_tx_fullupdate_test(Sequence *seq)
-{
-  return BKE_sequence_tx_test(seq) && ELEM(seq->type, SEQ_TYPE_ADJUSTMENT, SEQ_TYPE_MULTICAM);
-}
-
-static bool seq_overlap(Sequence *seq1, Sequence *seq2)
-{
-  return (seq1 != seq2 && seq1->machine == seq2->machine &&
-          ((seq1->enddisp <= seq2->startdisp) || (seq1->startdisp >= seq2->enddisp)) == 0);
-}
-
-bool BKE_sequence_test_overlap(ListBase *seqbasep, Sequence *test)
-{
-  Sequence *seq;
-
-  seq = seqbasep->first;
-  while (seq) {
-    if (seq_overlap(test, seq)) {
-      return true;
-    }
-
-    seq = seq->next;
-  }
-  return false;
-}
-
-void BKE_sequence_translate(Scene *evil_scene, Sequence *seq, int delta)
-{
-  if (delta == 0) {
-    return;
-  }
-
-  BKE_sequencer_offset_animdata(evil_scene, seq, delta);
-  seq->start += delta;
-
-  if (seq->type == SEQ_TYPE_META) {
-    Sequence *seq_child;
-    for (seq_child = seq->seqbase.first; seq_child; seq_child = seq_child->next) {
-      BKE_sequence_translate(evil_scene, seq_child, delta);
-    }
-  }
-
-  BKE_sequence_calc_disp(evil_scene, seq);
-}
-
-void BKE_sequence_sound_init(Scene *scene, Sequence *seq)
-{
-  if (seq->type == SEQ_TYPE_META) {
-    Sequence *seq_child;
-    for (seq_child = seq->seqbase.first; seq_child; seq_child = seq_child->next) {
-      BKE_sequence_sound_init(scene, seq_child);
-    }
-  }
-  else {
-    if (seq->sound) {
-      seq->scene_sound = BKE_sound_add_scene_sound_defaults(scene, seq);
-    }
-    if (seq->scene) {
-      seq->scene_sound = BKE_sound_scene_add_scene_sound_defaults(scene, seq);
-    }
-  }
-}
-
-const Sequence *BKE_sequencer_foreground_frame_get(const Scene *scene, int frame)
-{
-  const Editing *ed = scene->ed;
-  const Sequence *seq, *best_seq = NULL;
-  int best_machine = -1;
-
-  if (!ed) {
-    return NULL;
-  }
-
-  for (seq = ed->seqbasep->first; seq; seq = seq->next) {
-    if (seq->flag & SEQ_MUTE || seq->startdisp > frame || seq->enddisp <= frame) {
-      continue;
-    }
-    /* Only use strips that generate an image, not ones that combine
-     * other strips or apply some effect. */
-    if (ELEM(seq->type,
-             SEQ_TYPE_IMAGE,
-             SEQ_TYPE_META,
-             SEQ_TYPE_SCENE,
-             SEQ_TYPE_MOVIE,
-             SEQ_TYPE_COLOR,
-             SEQ_TYPE_TEXT)) {
-      if (seq->machine > best_machine) {
-        best_seq = seq;
-        best_machine = seq->machine;
-      }
-    }
-  }
-  return best_seq;
-}
-
-/* return 0 if there weren't enough space */
-bool BKE_sequence_base_shuffle_ex(ListBase *seqbasep,
-                                  Sequence *test,
-                                  Scene *evil_scene,
-                                  int channel_delta)
-{
-  const int orig_machine = test->machine;
-  BLI_assert(ELEM(channel_delta, -1, 1));
-
-  test->machine += channel_delta;
-  BKE_sequence_calc(evil_scene, test);
-  while (BKE_sequence_test_overlap(seqbasep, test)) {
-    if ((channel_delta > 0) ? (test->machine >= MAXSEQ) : (test->machine < 1)) {
-      break;
-    }
-
-    test->machine += channel_delta;
-    BKE_sequence_calc(
-        evil_scene,
-        test);  // XXX - I don't think this is needed since were only moving vertically, Campbell.
-  }
-
-  if ((test->machine < 1) || (test->machine > MAXSEQ)) {
-    /* Blender 2.4x would remove the strip.
-     * nicer to move it to the end */
-
-    Sequence *seq;
-    int new_frame = test->enddisp;
-
-    for (seq = seqbasep->first; seq; seq = seq->next) {
-      if (seq->machine == orig_machine) {
-        new_frame = max_ii(new_frame, seq->enddisp);
-      }
-    }
-
-    test->machine = orig_machine;
-    new_frame = new_frame + (test->start - test->startdisp); /* adjust by the startdisp */
-    BKE_sequence_translate(evil_scene, test, new_frame - test->start);
-
-    BKE_sequence_calc(evil_scene, test);
-    return false;
-  }
-
-  return true;
-}
-
-bool BKE_sequence_base_shuffle(ListBase *seqbasep, Sequence *test, Scene *evil_scene)
-{
-  return BKE_sequence_base_shuffle_ex(seqbasep, test, evil_scene, 1);
-}
-
-static int shuffle_seq_time_offset_test(ListBase *seqbasep, char dir)
-{
-  int offset = 0;
-  Sequence *seq, *seq_other;
-
-  for (seq = seqbasep->first; seq; seq = seq->next) {
-    if (seq->tmp) {
-      for (seq_other = seqbasep->first; seq_other; seq_other = seq_other->next) {
-        if (!seq_other->tmp && seq_overlap(seq, seq_other)) {
-          if (dir == 'L') {
-            offset = min_ii(offset, seq_other->startdisp - seq->enddisp);
-          }
-          else {
-            offset = max_ii(offset, seq_other->enddisp - seq->startdisp);
-          }
-        }
-      }
-    }
-  }
-  return offset;
-}
-
-static int shuffle_seq_time_offset(Scene *scene, ListBase *seqbasep, char dir)
-{
-  int ofs = 0;
-  int tot_ofs = 0;
-  Sequence *seq;
-  while ((ofs = shuffle_seq_time_offset_test(seqbasep, dir))) {
-    for (seq = seqbasep->first; seq; seq = seq->next) {
-      if (seq->tmp) {
-        /* seq_test_overlap only tests display values */
-        seq->startdisp += ofs;
-        seq->enddisp += ofs;
-      }
-    }
-
-    tot_ofs += ofs;
-  }
-
-  for (seq = seqbasep->first; seq; seq = seq->next) {
-    if (seq->tmp) {
-      BKE_sequence_calc_disp(scene, seq); /* corrects dummy startdisp/enddisp values */
-    }
-  }
-
-  return tot_ofs;
-}
-
-bool BKE_sequence_base_shuffle_time(ListBase *seqbasep,
-                                    Scene *evil_scene,
-                                    ListBase *markers,
-                                    const bool use_sync_markers)
-{
-  /* note: seq->tmp is used to tag strips to move */
-
-  Sequence *seq;
-
-  int offset_l = shuffle_seq_time_offset(evil_scene, seqbasep, 'L');
-  int offset_r = shuffle_seq_time_offset(evil_scene, seqbasep, 'R');
-  int offset = (-offset_l < offset_r) ? offset_l : offset_r;
-
-  if (offset) {
-    for (seq = seqbasep->first; seq; seq = seq->next) {
-      if (seq->tmp) {
-        BKE_sequence_translate(evil_scene, seq, offset);
-        seq->flag &= ~SEQ_OVERLAP;
-      }
-    }
-
-    if (use_sync_markers && !(evil_scene->toolsettings->lock_markers) && (markers != NULL)) {
-      TimeMarker *marker;
-      /* affect selected markers - it's unlikely that we will want to affect all in this way? */
-      for (marker = markers->first; marker; marker = marker->next) {
-        if (marker->flag & SELECT) {
-          marker->frame += offset;
-        }
-      }
-    }
-  }
-
-  return offset ? false : true;
-}
-
-/* Unlike _update_sound_ funcs, these ones take info from audaspace to update sequence length! */
-#ifdef WITH_AUDASPACE
-static bool sequencer_refresh_sound_length_recursive(Main *bmain, Scene *scene, ListBase *seqbase)
-{
-  Sequence *seq;
-  bool changed = false;
-
-  for (seq = seqbase->first; seq; seq = seq->next) {
-    if (seq->type == SEQ_TYPE_META) {
-      if (sequencer_refresh_sound_length_recursive(bmain, scene, &seq->seqbase)) {
-        BKE_sequence_calc(scene, seq);
-        changed = true;
-      }
-    }
-    else if (seq->type == SEQ_TYPE_SOUND_RAM && seq->sound) {
-      const float length = BKE_sound_get_length(bmain, seq->sound);
-      int old = seq->len;
-      float fac;
-
-      seq->len = (int)ceil((double)length * FPS);
-      fac = (float)seq->len / (float)old;
-      old = seq->startofs;
-      seq->startofs *= fac;
-      seq->endofs *= fac;
-      seq->start += (old - seq->startofs); /* So that visual/"real" start frame does not change! */
-
-      BKE_sequence_calc(scene, seq);
-      changed = true;
-    }
-  }
-  return changed;
-}
-#endif
-
-void BKE_sequencer_refresh_sound_length(Main *bmain, Scene *scene)
-{
-#ifdef WITH_AUDASPACE
-  if (scene->ed) {
-    sequencer_refresh_sound_length_recursive(bmain, scene, &scene->ed->seqbase);
-  }
-#else
-  UNUSED_VARS(bmain, scene);
-#endif
-}
-
-void BKE_sequencer_update_sound_bounds_all(Scene *scene)
-{
-  Editing *ed = scene->ed;
-
-  if (ed) {
-    Sequence *seq;
-
-    for (seq = ed->seqbase.first; seq; seq = seq->next) {
-      if (seq->type == SEQ_TYPE_META) {
-        seq_update_sound_bounds_recursive(scene, seq);
-      }
-      else if (ELEM(seq->type, SEQ_TYPE_SOUND_RAM, SEQ_TYPE_SCENE)) {
-        BKE_sequencer_update_sound_bounds(scene, seq);
-      }
-    }
-  }
-}
-
-void BKE_sequencer_update_sound_bounds(Scene *scene, Sequence *seq)
-{
-  if (seq->type == SEQ_TYPE_SCENE) {
-    if (seq->scene && seq->scene_sound) {
-      /* We have to take into account start frame of the sequence's scene! */
-      int startofs = seq->startofs + seq->anim_startofs + seq->scene->r.sfra;
-
-      BKE_sound_move_scene_sound(scene, seq->scene_sound, seq->startdisp, seq->enddisp, startofs);
-    }
-  }
-  else {
-    BKE_sound_move_scene_sound_defaults(scene, seq);
-  }
-  /* mute is set in seq_update_muting_recursive */
-}
-
-static void seq_update_muting_recursive(ListBase *seqbasep, Sequence *metaseq, int mute)
-{
-  Sequence *seq;
-  int seqmute;
-
-  /* for sound we go over full meta tree to update muted state,
-   * since sound is played outside of evaluating the imbufs, */
-  for (seq = seqbasep->first; seq; seq = seq->next) {
-    seqmute = (mute || (seq->flag & SEQ_MUTE));
-
-    if (seq->type == SEQ_TYPE_META) {
-      /* if this is the current meta sequence, unmute because
-       * all sequences above this were set to mute */
-      if (seq == metaseq) {
-        seqmute = 0;
-      }
-
-      seq_update_muting_recursive(&seq->seqbase, metaseq, seqmute);
-    }
-    else if (ELEM(seq->type, SEQ_TYPE_SOUND_RAM, SEQ_TYPE_SCENE)) {
-      if (seq->scene_sound) {
-        BKE_sound_mute_scene_sound(seq->scene_sound, seqmute);
-      }
-    }
-  }
-}
-
-void BKE_sequencer_update_muting(Editing *ed)
-{
-  if (ed) {
-    /* mute all sounds up to current metastack list */
-    MetaStack *ms = ed->metastack.last;
-
-    if (ms) {
-      seq_update_muting_recursive(&ed->seqbase, ms->parseq, 1);
-    }
-    else {
-      seq_update_muting_recursive(&ed->seqbase, NULL, 0);
-    }
-  }
-}
-
-static void seq_update_sound_recursive(Scene *scene, ListBase *seqbasep, bSound *sound)
-{
-  Sequence *seq;
-
-  for (seq = seqbasep->first; seq; seq = seq->next) {
-    if (seq->type == SEQ_TYPE_META) {
-      seq_update_sound_recursive(scene, &seq->seqbase, sound);
-    }
-    else if (seq->type == SEQ_TYPE_SOUND_RAM) {
-      if (seq->scene_sound && sound == seq->sound) {
-        BKE_sound_update_scene_sound(seq->scene_sound, sound);
-      }
-    }
-  }
-}
-
-void BKE_sequencer_update_sound(Scene *scene, bSound *sound)
-{
-  if (scene->ed) {
-    seq_update_sound_recursive(scene, &scene->ed->seqbase, sound);
-  }
-}
-
-/* in cases where we done know the sequence's listbase */
-ListBase *BKE_sequence_seqbase(ListBase *seqbase, Sequence *seq)
-{
-  Sequence *iseq;
-  ListBase *lb = NULL;
-
-  for (iseq = seqbase->first; iseq; iseq = iseq->next) {
-    if (seq == iseq) {
-      return seqbase;
-    }
-    if (iseq->seqbase.first && (lb = BKE_sequence_seqbase(&iseq->seqbase, seq))) {
-      return lb;
-    }
-  }
-
-  return NULL;
-}
-
-Sequence *BKE_sequence_metastrip(ListBase *seqbase, Sequence *meta, Sequence *seq)
-{
-  Sequence *iseq;
-
-  for (iseq = seqbase->first; iseq; iseq = iseq->next) {
-    Sequence *rval;
-
-    if (seq == iseq) {
-      return meta;
-    }
-    if (iseq->seqbase.first && (rval = BKE_sequence_metastrip(&iseq->seqbase, iseq, seq))) {
-      return rval;
-    }
-  }
-
-  return NULL;
-}
-
-int BKE_sequence_swap(Sequence *seq_a, Sequence *seq_b, const char **error_str)
-{
-  char name[sizeof(seq_a->name)];
-
-  if (seq_a->len != seq_b->len) {
-    *error_str = N_("Strips must be the same length");
-    return 0;
-  }
-
-  /* type checking, could be more advanced but disallow sound vs non-sound copy */
-  if (seq_a->type != seq_b->type) {
-    if (seq_a->type == SEQ_TYPE_SOUND_RAM || seq_b->type == SEQ_TYPE_SOUND_RAM) {
-      *error_str = N_("Strips were not compatible");
-      return 0;
-    }
-
-    /* disallow effects to swap with non-effects strips */
-    if ((seq_a->type & SEQ_TYPE_EFFECT) != (seq_b->type & SEQ_TYPE_EFFECT)) {
-      *error_str = N_("Strips were not compatible");
-      return 0;
-    }
-
-    if ((seq_a->type & SEQ_TYPE_EFFECT) && (seq_b->type & SEQ_TYPE_EFFECT)) {
-      if (BKE_sequence_effect_get_num_inputs(seq_a->type) !=
-          BKE_sequence_effect_get_num_inputs(seq_b->type)) {
-        *error_str = N_("Strips must have the same number of inputs");
-        return 0;
-      }
-    }
-  }
-
-  SWAP(Sequence, *seq_a, *seq_b);
-
-  /* swap back names so animation fcurves don't get swapped */
-  BLI_strncpy(name, seq_a->name + 2, sizeof(name));
-  BLI_strncpy(seq_a->name + 2, seq_b->name + 2, sizeof(seq_b->name) - 2);
-  BLI_strncpy(seq_b->name + 2, name, sizeof(seq_b->name) - 2);
-
-  /* swap back opacity, and overlay mode */
-  SWAP(int, seq_a->blend_mode, seq_b->blend_mode);
-  SWAP(float, seq_a->blend_opacity, seq_b->blend_opacity);
-
-  SWAP(Sequence *, seq_a->prev, seq_b->prev);
-  SWAP(Sequence *, seq_a->next, seq_b->next);
-  SWAP(int, seq_a->start, seq_b->start);
-  SWAP(int, seq_a->startofs, seq_b->startofs);
-  SWAP(int, seq_a->endofs, seq_b->endofs);
-  SWAP(int, seq_a->startstill, seq_b->startstill);
-  SWAP(int, seq_a->endstill, seq_b->endstill);
-  SWAP(int, seq_a->machine, seq_b->machine);
-  SWAP(int, seq_a->startdisp, seq_b->startdisp);
-  SWAP(int, seq_a->enddisp, seq_b->enddisp);
-
-  return 1;
-}
-
-/* r_prefix + [" + escaped_name + "] + \0 */
-#define SEQ_RNAPATH_MAXSTR ((30 + 2 + (SEQ_NAME_MAXSTR * 2) + 2) + 1)
-
-static size_t sequencer_rna_path_prefix(char str[SEQ_RNAPATH_MAXSTR], const char *name)
-{
-  char name_esc[SEQ_NAME_MAXSTR * 2];
-
-  BLI_strescape(name_esc, name, sizeof(name_esc));
-  return BLI_snprintf_rlen(
-      str, SEQ_RNAPATH_MAXSTR, "sequence_editor.sequences_all[\"%s\"]", name_esc);
-}
-
-/* XXX - hackish function needed for transforming strips! TODO - have some better solution */
-void BKE_sequencer_offset_animdata(Scene *scene, Sequence *seq, int ofs)
-{
-  char str[SEQ_RNAPATH_MAXSTR];
-  size_t str_len;
-  FCurve *fcu;
-
-  if (scene->adt == NULL || ofs == 0 || scene->adt->action == NULL) {
-    return;
-  }
-
-  str_len = sequencer_rna_path_prefix(str, seq->name + 2);
-
-  for (fcu = scene->adt->action->curves.first; fcu; fcu = fcu->next) {
-    if (STREQLEN(fcu->rna_path, str, str_len)) {
-      unsigned int i;
-      if (fcu->bezt) {
-        for (i = 0; i < fcu->totvert; i++) {
-          BezTriple *bezt = &fcu->bezt[i];
-          bezt->vec[0][0] += ofs;
-          bezt->vec[1][0] += ofs;
-          bezt->vec[2][0] += ofs;
-        }
-      }
-      if (fcu->fpt) {
-        for (i = 0; i < fcu->totvert; i++) {
-          FPoint *fpt = &fcu->fpt[i];
-          fpt->vec[0] += ofs;
-        }
-      }
-    }
-  }
-
-  DEG_id_tag_update(&scene->adt->action->id, ID_RECALC_ANIMATION);
-}
-
-void BKE_sequencer_dupe_animdata(Scene *scene, const char *name_src, const char *name_dst)
-{
-  char str_from[SEQ_RNAPATH_MAXSTR];
-  size_t str_from_len;
-  FCurve *fcu;
-  FCurve *fcu_last;
-  FCurve *fcu_cpy;
-  ListBase lb = {NULL, NULL};
-
-  if (scene->adt == NULL || scene->adt->action == NULL) {
-    return;
-  }
-
-  str_from_len = sequencer_rna_path_prefix(str_from, name_src);
-
-  fcu_last = scene->adt->action->curves.last;
-
-  for (fcu = scene->adt->action->curves.first; fcu && fcu->prev != fcu_last; fcu = fcu->next) {
-    if (STREQLEN(fcu->rna_path, str_from, str_from_len)) {
-      fcu_cpy = BKE_fcurve_copy(fcu);
-      BLI_addtail(&lb, fcu_cpy);
-    }
-  }
-
-  /* notice validate is 0, keep this because the seq may not be added to the scene yet */
-  BKE_animdata_fix_paths_rename(
-      &scene->id, scene->adt, NULL, "sequence_editor.sequences_all", name_src, name_dst, 0, 0, 0);
-
-  /* add the original fcurves back */
-  BLI_movelisttolist(&scene->adt->action->curves, &lb);
-}
-
-/* XXX - hackish function needed to remove all fcurves belonging to a sequencer strip */
-static void seq_free_animdata(Scene *scene, Sequence *seq)
-{
-  char str[SEQ_RNAPATH_MAXSTR];
-  size_t str_len;
-  FCurve *fcu;
-
-  if (scene->adt == NULL || scene->adt->action == NULL) {
-    return;
-  }
-
-  str_len = sequencer_rna_path_prefix(str, seq->name + 2);
-
-  fcu = scene->adt->action->curves.first;
-
-  while (fcu) {
-    if (STREQLEN(fcu->rna_path, str, str_len)) {
-      FCurve *next_fcu = fcu->next;
-
-      BLI_remlink(&scene->adt->action->curves, fcu);
-      BKE_fcurve_free(fcu);
-
-      fcu = next_fcu;
-    }
-    else {
-      fcu = fcu->next;
-    }
-  }
-}
-
-#undef SEQ_RNAPATH_MAXSTR
-
-Sequence *BKE_sequence_get_by_name(ListBase *seqbase, const char *name, bool recursive)
-{
-  Sequence *iseq = NULL;
-  Sequence *rseq = NULL;
-
-  for (iseq = seqbase->first; iseq; iseq = iseq->next) {
-    if (STREQ(name, iseq->name + 2)) {
-      return iseq;
-    }
-    if (recursive && (iseq->seqbase.first) &&
-        (rseq = BKE_sequence_get_by_name(&iseq->seqbase, name, 1))) {
-      return rseq;
-    }
-  }
-
-  return NULL;
-}
-
-/**
- * Only use as last resort when the StripElem is available but no the Sequence.
- * (needed for RNA)
- */
-Sequence *BKE_sequencer_from_elem(ListBase *seqbase, StripElem *se)
-{
-  Sequence *iseq;
-
-  for (iseq = seqbase->first; iseq; iseq = iseq->next) {
-    Sequence *seq_found;
-    if ((iseq->strip && iseq->strip->stripdata) &&
-        (ARRAY_HAS_ITEM(se, iseq->strip->stripdata, iseq->len))) {
-      break;
-    }
-    if ((seq_found = BKE_sequencer_from_elem(&iseq->seqbase, se))) {
-      iseq = seq_found;
-      break;
-    }
-  }
-
-  return iseq;
-}
-
-Sequence *BKE_sequencer_active_get(Scene *scene)
-{
-  Editing *ed = BKE_sequencer_editing_get(scene, false);
-
-  if (ed == NULL) {
-    return NULL;
-  }
-
-  return ed->act_seq;
-}
-
-void BKE_sequencer_active_set(Scene *scene, Sequence *seq)
-{
-  Editing *ed = BKE_sequencer_editing_get(scene, false);
-
-  if (ed == NULL) {
-    return;
-  }
-
-  ed->act_seq = seq;
-}
-
-int BKE_sequencer_active_get_pair(Scene *scene, Sequence **seq_act, Sequence **seq_other)
-{
-  Editing *ed = BKE_sequencer_editing_get(scene, false);
-
-  *seq_act = BKE_sequencer_active_get(scene);
-
-  if (*seq_act == NULL) {
-    return 0;
-  }
-
-  Sequence *seq;
-
-  *seq_other = NULL;
-
-  for (seq = ed->seqbasep->first; seq; seq = seq->next) {
-    if (seq->flag & SELECT && (seq != (*seq_act))) {
-      if (*seq_other) {
-        return 0;
-      }
-
-      *seq_other = seq;
-    }
-  }
-
-  return (*seq_other != NULL);
-}
-
-Mask *BKE_sequencer_mask_get(Scene *scene)
-{
-  Sequence *seq_act = BKE_sequencer_active_get(scene);
-
-  if (seq_act && seq_act->type == SEQ_TYPE_MASK) {
-    return seq_act->mask;
-  }
-
-  return NULL;
-}
-
-/* api like funcs for adding */
-
-static void seq_load_apply(Main *bmain, Scene *scene, Sequence *seq, SeqLoadInfo *seq_load)
-{
-  if (seq) {
-    BLI_strncpy_utf8(seq->name + 2, seq_load->name, sizeof(seq->name) - 2);
-    BLI_utf8_invalid_strip(seq->name + 2, strlen(seq->name + 2));
-    BKE_sequence_base_unique_name_recursive(&scene->ed->seqbase, seq);
-
-    if (seq_load->flag & SEQ_LOAD_FRAME_ADVANCE) {
-      seq_load->start_frame += (seq->enddisp - seq->startdisp);
-    }
-
-    if (seq_load->flag & SEQ_LOAD_REPLACE_SEL) {
-      seq_load->flag |= SELECT;
-      BKE_sequencer_active_set(scene, seq);
-    }
-
-    if (seq_load->flag & SEQ_LOAD_SOUND_MONO) {
-      seq->sound->flags |= SOUND_FLAGS_MONO;
-      BKE_sound_load(bmain, seq->sound);
-    }
-
-    if (seq_load->flag & SEQ_LOAD_SOUND_CACHE) {
-      if (seq->sound) {
-        seq->sound->flags |= SOUND_FLAGS_CACHING;
-      }
-    }
-
-    seq_load->tot_success++;
-  }
-  else {
-    seq_load->tot_error++;
-  }
-}
-
-static Strip *seq_strip_alloc(int type)
-{
-  Strip *strip = MEM_callocN(sizeof(Strip), "strip");
-
-  if (ELEM(type, SEQ_TYPE_SOUND_RAM, SEQ_TYPE_SOUND_HD) == 0) {
-    strip->transform = MEM_callocN(sizeof(struct StripTransform), "StripTransform");
-    strip->crop = MEM_callocN(sizeof(struct StripCrop), "StripCrop");
-  }
-
-  strip->us = 1;
-  return strip;
-}
-
-Sequence *BKE_sequence_alloc(ListBase *lb, int cfra, int machine, int type)
-{
-  Sequence *seq;
-
-  seq = MEM_callocN(sizeof(Sequence), "addseq");
-  BLI_addtail(lb, seq);
-
-  *((short *)seq->name) = ID_SEQ;
-  seq->name[2] = 0;
-
-  seq->flag = SELECT;
-  seq->start = cfra;
-  seq->machine = machine;
-  seq->sat = 1.0;
-  seq->mul = 1.0;
-  seq->blend_opacity = 100.0;
-  seq->volume = 1.0f;
-  seq->pitch = 1.0f;
-  seq->scene_sound = NULL;
-  seq->type = type;
-
-  seq->strip = seq_strip_alloc(type);
-  seq->stereo3d_format = MEM_callocN(sizeof(Stereo3dFormat), "Sequence Stereo Format");
-  seq->cache_flag = SEQ_CACHE_STORE_RAW | SEQ_CACHE_STORE_PREPROCESSED | SEQ_CACHE_STORE_COMPOSITE;
-
-  BKE_sequence_session_uuid_generate(seq);
-
-  return seq;
-}
-
-void BKE_sequence_session_uuid_generate(struct Sequence *sequence)
-{
-  sequence->runtime.session_uuid = BLI_session_uuid_generate();
-}
-
-void BKE_sequence_alpha_mode_from_extension(Sequence *seq)
-{
-  if (seq->strip && seq->strip->stripdata) {
-    const char *filename = seq->strip->stripdata->name;
-    seq->alpha_mode = BKE_image_alpha_mode_from_extension_ex(filename);
-  }
-}
-
-void BKE_sequence_init_colorspace(Sequence *seq)
-{
-  if (seq->strip && seq->strip->stripdata) {
-    char name[FILE_MAX];
-    ImBuf *ibuf;
-
-    BLI_join_dirfile(name, sizeof(name), seq->strip->dir, seq->strip->stripdata->name);
-    BLI_path_abs(name, BKE_main_blendfile_path_from_global());
-
-    /* initialize input color space */
-    if (seq->type == SEQ_TYPE_IMAGE) {
-      ibuf = IMB_loadiffname(
-          name, IB_test | IB_alphamode_detect, seq->strip->colorspace_settings.name);
-
-      /* byte images are default to straight alpha, however sequencer
-       * works in premul space, so mark strip to be premultiplied first
-       */
-      seq->alpha_mode = SEQ_ALPHA_STRAIGHT;
-      if (ibuf) {
-        if (ibuf->flags & IB_alphamode_premul) {
-          seq->alpha_mode = IMA_ALPHA_PREMUL;
-        }
-
-        IMB_freeImBuf(ibuf);
-      }
-    }
-  }
-}
-
-float BKE_sequence_get_fps(Scene *scene, Sequence *seq)
-{
-  switch (seq->type) {
-    case SEQ_TYPE_MOVIE: {
-      seq_open_anim_file(scene, seq, true);
-      if (BLI_listbase_is_empty(&seq->anims)) {
-        return 0.0f;
-      }
-      StripAnim *strip_anim = seq->anims.first;
-      if (strip_anim->anim == NULL) {
-        return 0.0f;
-      }
-      short frs_sec;
-      float frs_sec_base;
-      if (IMB_anim_get_fps(strip_anim->anim, &frs_sec, &frs_sec_base, true)) {
-        return (float)frs_sec / frs_sec_base;
-      }
-      break;
-    }
-    case SEQ_TYPE_MOVIECLIP:
-      if (seq->clip != NULL) {
-        return BKE_movieclip_get_fps(seq->clip);
-      }
-      break;
-    case SEQ_TYPE_SCENE:
-      if (seq->scene != NULL) {
-        return (float)seq->scene->r.frs_sec / seq->scene->r.frs_sec_base;
-      }
-      break;
-  }
-  return 0.0f;
-}
-
-/* NOTE: this function doesn't fill in image names */
-Sequence *BKE_sequencer_add_image_strip(bContext *C, ListBase *seqbasep, SeqLoadInfo *seq_load)
-{
-  Scene *scene = CTX_data_scene(C); /* only for active seq */
-  Sequence *seq;
-  Strip *strip;
-
-  seq = BKE_sequence_alloc(seqbasep, seq_load->start_frame, seq_load->channel, SEQ_TYPE_IMAGE);
-  seq->blend_mode = SEQ_TYPE_CROSS; /* so alpha adjustment fade to the strip below */
-
-  /* basic defaults */
-  seq->len = seq_load->len ? seq_load->len : 1;
-
-  strip = seq->strip;
-  strip->stripdata = MEM_callocN(seq->len * sizeof(StripElem), "stripelem");
-  BLI_strncpy(strip->dir, seq_load->path, sizeof(strip->dir));
-
-  if (seq_load->stereo3d_format) {
-    *seq->stereo3d_format = *seq_load->stereo3d_format;
-  }
-
-  seq->views_format = seq_load->views_format;
-  seq->flag |= seq_load->flag & SEQ_USE_VIEWS;
-
-  seq_load_apply(CTX_data_main(C), scene, seq, seq_load);
-  BKE_sequence_invalidate_cache_composite(scene, seq);
-
-  return seq;
-}
-
-#ifdef WITH_AUDASPACE
-Sequence *BKE_sequencer_add_sound_strip(bContext *C, ListBase *seqbasep, SeqLoadInfo *seq_load)
-{
-  Main *bmain = CTX_data_main(C);
-  Scene *scene = CTX_data_scene(C); /* only for sound */
-  Editing *ed = BKE_sequencer_editing_get(scene, false);
-  bSound *sound;
-
-  Sequence *seq; /* generic strip vars */
-  Strip *strip;
-  StripElem *se;
-
-  sound = BKE_sound_new_file(bmain, seq_load->path); /* handles relative paths */
-
-  SoundInfo info;
-  if (!BKE_sound_info_get(bmain, sound, &info)) {
-    BKE_id_free(bmain, sound);
-    return NULL;
-  }
-
-  if (info.specs.channels == SOUND_CHANNELS_INVALID) {
-    BKE_id_free(bmain, sound);
-    return NULL;
-  }
-
-  seq = BKE_sequence_alloc(seqbasep, seq_load->start_frame, seq_load->channel, SEQ_TYPE_SOUND_RAM);
-  seq->sound = sound;
-  BLI_strncpy(seq->name + 2, "Sound", SEQ_NAME_MAXSTR - 2);
-  BKE_sequence_base_unique_name_recursive(&scene->ed->seqbase, seq);
-
-  /* basic defaults */
-  /* We add a very small negative offset here, because
-   * ceil(132.0) == 133.0, not nice with videos, see T47135. */
-  seq->len = (int)ceil((double)info.length * FPS - 1e-4);
-  strip = seq->strip;
-
-  /* we only need 1 element to store the filename */
-  strip->stripdata = se = MEM_callocN(sizeof(StripElem), "stripelem");
-
-  BLI_split_dirfile(seq_load->path, strip->dir, se->name, sizeof(strip->dir), sizeof(se->name));
-
-  seq->scene_sound = NULL;
-
-  BKE_sequence_calc_disp(scene, seq);
-
-  /* last active name */
-  BLI_strncpy(ed->act_sounddir, strip->dir, FILE_MAXDIR);
-
-  seq_load_apply(bmain, scene, seq, seq_load);
-
-  /* TODO(sergey): Shall we tag here or in the operator? */
-  DEG_relations_tag_update(bmain);
-
-  return seq;
-}
-#else   // WITH_AUDASPACE
-Sequence *BKE_sequencer_add_sound_strip(bContext *C, ListBase *seqbasep, SeqLoadInfo *seq_load)
-{
-  (void)C;
-  (void)seqbasep;
-  (void)seq_load;
-  return NULL;
-}
-#endif  // WITH_AUDASPACE
-
-static void seq_anim_add_suffix(Scene *scene, struct anim *anim, const int view_id)
-{
-  const char *suffix = BKE_scene_multiview_view_id_suffix_get(&scene->r, view_id);
-  IMB_suffix_anim(anim, suffix);
-}
-
-Sequence *BKE_sequencer_add_movie_strip(bContext *C, ListBase *seqbasep, SeqLoadInfo *seq_load)
-{
-  Main *bmain = CTX_data_main(C);
-  Scene *scene = CTX_data_scene(C); /* only for sound */
-  char path[sizeof(seq_load->path)];
-
-  Sequence *seq; /* generic strip vars */
-  Strip *strip;
-  StripElem *se;
-  char colorspace[64] = "\0"; /* MAX_COLORSPACE_NAME */
-  bool is_multiview_loaded = false;
-  const bool is_multiview = (seq_load->flag & SEQ_USE_VIEWS) != 0;
-  const int totfiles = seq_num_files(scene, seq_load->views_format, is_multiview);
-  struct anim **anim_arr;
-  int i;
-
-  BLI_strncpy(path, seq_load->path, sizeof(path));
-  BLI_path_abs(path, BKE_main_blendfile_path(bmain));
-
-  anim_arr = MEM_callocN(sizeof(struct anim *) * totfiles, "Video files");
-
-  if (is_multiview && (seq_load->views_format == R_IMF_VIEWS_INDIVIDUAL)) {
-    char prefix[FILE_MAX];
-    const char *ext = NULL;
-    size_t j = 0;
-
-    BKE_scene_multiview_view_prefix_get(scene, path, prefix, &ext);
-
-    if (prefix[0] != '\0') {
-      for (i = 0; i < totfiles; i++) {
-        char str[FILE_MAX];
-
-        seq_multiview_name(scene, i, prefix, ext, str, FILE_MAX);
-        anim_arr[j] = openanim(str, IB_rect, 0, colorspace);
-
-        if (anim_arr[j]) {
-          seq_anim_add_suffix(scene, anim_arr[j], i);
-          j++;
-        }
-      }
-
-      if (j == 0) {
-        MEM_freeN(anim_arr);
-        return NULL;
-      }
-      is_multiview_loaded = true;
-    }
-  }
-
-  if (is_multiview_loaded == false) {
-    anim_arr[0] = openanim(path, IB_rect, 0, colorspace);
-
-    if (anim_arr[0] == NULL) {
-      MEM_freeN(anim_arr);
-      return NULL;
-    }
-  }
-
-  if (seq_load->flag & SEQ_LOAD_MOVIE_SOUND) {
-    seq_load->channel++;
-  }
-  seq = BKE_sequence_alloc(seqbasep, seq_load->start_frame, seq_load->channel, SEQ_TYPE_MOVIE);
-
-  /* multiview settings */
-  if (seq_load->stereo3d_format) {
-    *seq->stereo3d_format = *seq_load->stereo3d_format;
-    seq->views_format = seq_load->views_format;
-  }
-  seq->flag |= seq_load->flag & SEQ_USE_VIEWS;
-
-  seq->type = SEQ_TYPE_MOVIE;
-  seq->blend_mode = SEQ_TYPE_CROSS; /* so alpha adjustment fade to the strip below */
-
-  for (i = 0; i < totfiles; i++) {
-    if (anim_arr[i]) {
-      StripAnim *sanim = MEM_mallocN(sizeof(StripAnim), "Strip Anim");
-      BLI_addtail(&seq->anims, sanim);
-      sanim->anim = anim_arr[i];
-    }
-    else {
-      break;
-    }
-  }
-
-  IMB_anim_load_metadata(anim_arr[0]);
-
-  seq->anim_preseek = IMB_anim_get_preseek(anim_arr[0]);
-  BLI_strncpy(seq->name + 2, "Movie", SEQ_NAME_MAXSTR - 2);
-  BKE_sequence_base_unique_name_recursive(&scene->ed->seqbase, seq);
-
-  /* adjust scene's frame rate settings to match */
-  if (seq_load->flag & SEQ_LOAD_SYNC_FPS) {
-    IMB_anim_get_fps(anim_arr[0], &scene->r.frs_sec, &scene->r.frs_sec_base, true);
-  }
-
-  /* basic defaults */
-  seq->len = IMB_anim_get_duration(anim_arr[0], IMB_TC_RECORD_RUN);
-  strip = seq->strip;
-
-  BLI_strncpy(seq->strip->colorspace_settings.name,
-              colorspace,
-              sizeof(seq->strip->colorspace_settings.name));
-
-  /* we only need 1 element for MOVIE strips */
-  strip->stripdata = se = MEM_callocN(sizeof(StripElem), "stripelem");
-
-  BLI_split_dirfile(seq_load->path, strip->dir, se->name, sizeof(strip->dir), sizeof(se->name));
-
-  BKE_sequence_calc_disp(scene, seq);
-
-  if (seq_load->name[0] == '\0') {
-    BLI_strncpy(seq_load->name, se->name, sizeof(seq_load->name));
-  }
-
-  if (seq_load->flag & SEQ_LOAD_MOVIE_SOUND) {
-    int start_frame_back = seq_load->start_frame;
-    seq_load->channel--;
-    seq_load->seq_sound = BKE_sequencer_add_sound_strip(C, seqbasep, seq_load);
-    seq_load->start_frame = start_frame_back;
-  }
-
-  /* can be NULL */
-  seq_load_apply(CTX_data_main(C), scene, seq, seq_load);
-  BKE_sequence_invalidate_cache_composite(scene, seq);
-
-  MEM_freeN(anim_arr);
-  return seq;
-}
-
-static Sequence *seq_dupli(const Scene *scene_src,
-                           Scene *scene_dst,
-                           ListBase *new_seq_list,
-                           Sequence *seq,
-                           int dupe_flag,
-                           const int flag)
-{
-  Sequence *seqn = MEM_dupallocN(seq);
-
-  if ((flag & LIB_ID_CREATE_NO_MAIN) == 0) {
-    BKE_sequence_session_uuid_generate(seq);
-  }
-
-  seq->tmp = seqn;
-  seqn->strip = MEM_dupallocN(seq->strip);
-
-  seqn->stereo3d_format = MEM_dupallocN(seq->stereo3d_format);
-
-  /* XXX: add F-Curve duplication stuff? */
-
-  if (seq->strip->crop) {
-    seqn->strip->crop = MEM_dupallocN(seq->strip->crop);
-  }
-
-  if (seq->strip->transform) {
-    seqn->strip->transform = MEM_dupallocN(seq->strip->transform);
-  }
-
-  if (seq->strip->proxy) {
-    seqn->strip->proxy = MEM_dupallocN(seq->strip->proxy);
-    seqn->strip->proxy->anim = NULL;
-  }
-
-  if (seq->prop) {
-    seqn->prop = IDP_CopyProperty_ex(seq->prop, flag);
-  }
-
-  if (seqn->modifiers.first) {
-    BLI_listbase_clear(&seqn->modifiers);
-
-    BKE_sequence_modifier_list_copy(seqn, seq);
-  }
-
-  if (seq->type == SEQ_TYPE_META) {
-    seqn->strip->stripdata = NULL;
-
-    BLI_listbase_clear(&seqn->seqbase);
-    /* WATCH OUT!!! - This metastrip is not recursively duplicated here - do this after!!! */
-    /* - seq_dupli_recursive(&seq->seqbase, &seqn->seqbase);*/
-  }
-  else if (seq->type == SEQ_TYPE_SCENE) {
-    seqn->strip->stripdata = NULL;
-    if (seq->scene_sound) {
-      seqn->scene_sound = BKE_sound_scene_add_scene_sound_defaults(scene_dst, seqn);
-    }
-  }
-  else if (seq->type == SEQ_TYPE_MOVIECLIP) {
-    /* avoid assert */
-  }
-  else if (seq->type == SEQ_TYPE_MASK) {
-    /* avoid assert */
-  }
-  else if (seq->type == SEQ_TYPE_MOVIE) {
-    seqn->strip->stripdata = MEM_dupallocN(seq->strip->stripdata);
-    BLI_listbase_clear(&seqn->anims);
-  }
-  else if (seq->type == SEQ_TYPE_SOUND_RAM) {
-    seqn->strip->stripdata = MEM_dupallocN(seq->strip->stripdata);
-    seqn->scene_sound = NULL;
-    if ((flag & LIB_ID_CREATE_NO_USER_REFCOUNT) == 0) {
-      id_us_plus((ID *)seqn->sound);
-    }
-  }
-  else if (seq->type == SEQ_TYPE_IMAGE) {
-    seqn->strip->stripdata = MEM_dupallocN(seq->strip->stripdata);
-  }
-  else if (seq->type & SEQ_TYPE_EFFECT) {
-    struct SeqEffectHandle sh;
-    sh = BKE_sequence_get_effect(seq);
-    if (sh.copy) {
-      sh.copy(seqn, seq, flag);
-    }
-
-    seqn->strip->stripdata = NULL;
-  }
-  else {
-    /* sequence type not handled in duplicate! Expect a crash now... */
-    BLI_assert(0);
-  }
-
-  /* When using SEQ_DUPE_UNIQUE_NAME, it is mandatory to add new sequences in relevant container
-   * (scene or meta's one), *before* checking for unique names. Otherwise the meta's list is empty
-   * and hence we miss all seqs in that meta that have already been duplicated (see T55668).
-   * Note that unique name check itself could be done at a later step in calling code, once all
-   * seqs have bee duplicated (that was first, simpler solution), but then handling of animation
-   * data will be broken (see T60194). */
-  if (new_seq_list != NULL) {
-    BLI_addtail(new_seq_list, seqn);
-  }
-
-  if (scene_src == scene_dst) {
-    if (dupe_flag & SEQ_DUPE_UNIQUE_NAME) {
-      BKE_sequence_base_unique_name_recursive(&scene_dst->ed->seqbase, seqn);
-    }
-
-    if (dupe_flag & SEQ_DUPE_ANIM) {
-      BKE_sequencer_dupe_animdata(scene_dst, seq->name + 2, seqn->name + 2);
-    }
-  }
-
-  return seqn;
-}
-
-static void seq_new_fix_links_recursive(Sequence *seq)
-{
-  SequenceModifierData *smd;
-
-  if (seq->type & SEQ_TYPE_EFFECT) {
-    if (seq->seq1 && seq->seq1->tmp) {
-      seq->seq1 = seq->seq1->tmp;
-    }
-    if (seq->seq2 && seq->seq2->tmp) {
-      seq->seq2 = seq->seq2->tmp;
-    }
-    if (seq->seq3 && seq->seq3->tmp) {
-      seq->seq3 = seq->seq3->tmp;
-    }
-  }
-  else if (seq->type == SEQ_TYPE_META) {
-    Sequence *seqn;
-    for (seqn = seq->seqbase.first; seqn; seqn = seqn->next) {
-      seq_new_fix_links_recursive(seqn);
-    }
-  }
-
-  for (smd = seq->modifiers.first; smd; smd = smd->next) {
-    if (smd->mask_sequence && smd->mask_sequence->tmp) {
-      smd->mask_sequence = smd->mask_sequence->tmp;
-    }
-  }
-}
-
-static Sequence *sequence_dupli_recursive_do(const Scene *scene_src,
-                                             Scene *scene_dst,
-                                             ListBase *new_seq_list,
-                                             Sequence *seq,
-                                             const int dupe_flag)
-{
-  Sequence *seqn;
-
-  seq->tmp = NULL;
-  seqn = seq_dupli(scene_src, scene_dst, new_seq_list, seq, dupe_flag, 0);
-  if (seq->type == SEQ_TYPE_META) {
-    Sequence *s;
-    for (s = seq->seqbase.first; s; s = s->next) {
-      sequence_dupli_recursive_do(scene_src, scene_dst, &seqn->seqbase, s, dupe_flag);
-    }
-  }
-
-  return seqn;
-}
-
-Sequence *BKE_sequence_dupli_recursive(
-    const Scene *scene_src, Scene *scene_dst, ListBase *new_seq_list, Sequence *seq, int dupe_flag)
-{
-  Sequence *seqn = sequence_dupli_recursive_do(scene_src, scene_dst, new_seq_list, seq, dupe_flag);
-
-  /* This does not need to be in recursive call itself, since it is already recursive... */
-  seq_new_fix_links_recursive(seqn);
-
-  return seqn;
-}
-
-void BKE_sequence_base_dupli_recursive(const Scene *scene_src,
-                                       Scene *scene_dst,
-                                       ListBase *nseqbase,
-                                       const ListBase *seqbase,
-                                       int dupe_flag,
-                                       const int flag)
-{
-  Sequence *seq;
-  Sequence *seqn = NULL;
-  Sequence *last_seq = BKE_sequencer_active_get((Scene *)scene_src);
-  /* always include meta's strips */
-  int dupe_flag_recursive = dupe_flag | SEQ_DUPE_ALL | SEQ_DUPE_IS_RECURSIVE_CALL;
-
-  for (seq = seqbase->first; seq; seq = seq->next) {
-    seq->tmp = NULL;
-    if ((seq->flag & SELECT) || (dupe_flag & SEQ_DUPE_ALL)) {
-      seqn = seq_dupli(scene_src, scene_dst, nseqbase, seq, dupe_flag, flag);
-      if (seqn) { /*should never fail */
-        if (dupe_flag & SEQ_DUPE_CONTEXT) {
-          seq->flag &= ~SEQ_ALLSEL;
-          seqn->flag &= ~(SEQ_LEFTSEL + SEQ_RIGHTSEL + SEQ_LOCK);
-        }
-
-        if (seq->type == SEQ_TYPE_META) {
-          BKE_sequence_base_dupli_recursive(
-              scene_src, scene_dst, &seqn->seqbase, &seq->seqbase, dupe_flag_recursive, flag);
-        }
-
-        if (dupe_flag & SEQ_DUPE_CONTEXT) {
-          if (seq == last_seq) {
-            BKE_sequencer_active_set(scene_dst, seqn);
-          }
-        }
-      }
-    }
-  }
-
-  /* Fix modifier links recursively from the top level only, when all sequences have been
-   * copied. */
-  if (dupe_flag & SEQ_DUPE_IS_RECURSIVE_CALL) {
-    return;
-  }
-
-  /* fix modifier linking */
-  for (seq = nseqbase->first; seq; seq = seq->next) {
-    seq_new_fix_links_recursive(seq);
-  }
-}
-
-/* called on draw, needs to be fast,
- * we could cache and use a flag if we want to make checks for file paths resolving for eg. */
-bool BKE_sequence_is_valid_check(Sequence *seq)
-{
-  switch (seq->type) {
-    case SEQ_TYPE_MASK:
-      return (seq->mask != NULL);
-    case SEQ_TYPE_MOVIECLIP:
-      return (seq->clip != NULL);
-    case SEQ_TYPE_SCENE:
-      return (seq->scene != NULL);
-    case SEQ_TYPE_SOUND_RAM:
-      return (seq->sound != NULL);
-  }
-
-  return true;
-}
-
-int BKE_sequencer_find_next_prev_edit(Scene *scene,
-                                      int cfra,
-                                      const short side,
-                                      const bool do_skip_mute,
-                                      const bool do_center,
-                                      const bool do_unselected)
-{
-  Editing *ed = BKE_sequencer_editing_get(scene, false);
-  Sequence *seq;
-
-  int dist, best_dist, best_frame = cfra;
-  int seq_frames[2], seq_frames_tot;
-
-  /* In case where both is passed,
-   * frame just finds the nearest end while frame_left the nearest start. */
-
-  best_dist = MAXFRAME * 2;
-
-  if (ed == NULL) {
-    return cfra;
-  }
-
-  for (seq = ed->seqbasep->first; seq; seq = seq->next) {
-    int i;
-
-    if (do_skip_mute && (seq->flag & SEQ_MUTE)) {
-      continue;
-    }
-
-    if (do_unselected && (seq->flag & SELECT)) {
-      continue;
-    }
-
-    if (do_center) {
-      seq_frames[0] = (seq->startdisp + seq->enddisp) / 2;
-      seq_frames_tot = 1;
-    }
-    else {
-      seq_frames[0] = seq->startdisp;
-      seq_frames[1] = seq->enddisp;
-
-      seq_frames_tot = 2;
-    }
-
-    for (i = 0; i < seq_frames_tot; i++) {
-      const int seq_frame = seq_frames[i];
-
-      dist = MAXFRAME * 2;
-
-      switch (side) {
-        case SEQ_SIDE_LEFT:
-          if (seq_frame < cfra) {
-            dist = cfra - seq_frame;
-          }
-          break;
-        case SEQ_SIDE_RIGHT:
-          if (seq_frame > cfra) {
-            dist = seq_frame - cfra;
-          }
-          break;
-        case SEQ_SIDE_BOTH:
-          dist = abs(seq_frame - cfra);
-          break;
-      }
-
-      if (dist < best_dist) {
-        best_frame = seq_frame;
-        best_dist = dist;
-      }
-    }
-  }
-
-  return best_frame;
-}
-
-static void sequencer_all_free_anim_ibufs(ListBase *seqbase, int cfra)
-{
-  for (Sequence *seq = seqbase->first; seq != NULL; seq = seq->next) {
-    if (seq->enddisp < cfra || seq->startdisp > cfra) {
-      BKE_sequence_free_anim(seq);
-    }
-    if (seq->type == SEQ_TYPE_META) {
-      sequencer_all_free_anim_ibufs(&seq->seqbase, cfra);
-    }
-  }
-}
-
-void BKE_sequencer_all_free_anim_ibufs(Scene *scene, int cfra)
-{
-  Editing *ed = BKE_sequencer_editing_get(scene, false);
-  if (ed == NULL) {
-    return;
-  }
-  sequencer_all_free_anim_ibufs(&ed->seqbase, cfra);
-  BKE_sequencer_cache_cleanup(scene);
-}
-
-static bool sequencer_seq_generates_image(Sequence *seq)
-{
-  switch (seq->type) {
-    case SEQ_TYPE_IMAGE:
-    case SEQ_TYPE_SCENE:
-    case SEQ_TYPE_MOVIE:
-    case SEQ_TYPE_MOVIECLIP:
-    case SEQ_TYPE_MASK:
-    case SEQ_TYPE_COLOR:
-    case SEQ_TYPE_TEXT:
-      return true;
-  }
-  return false;
-}
-
-static Sequence *sequencer_check_scene_recursion(Scene *scene, ListBase *seqbase)
-{
-  LISTBASE_FOREACH (Sequence *, seq, seqbase) {
-    if (seq->type == SEQ_TYPE_SCENE && seq->scene == scene) {
-      return seq;
-    }
-
-    if (seq->type == SEQ_TYPE_META && sequencer_check_scene_recursion(scene, &seq->seqbase)) {
-      return seq;
-    }
-  }
-
-  return NULL;
-}
-
-bool BKE_sequencer_check_scene_recursion(Scene *scene, ReportList *reports)
-{
-  Editing *ed = BKE_sequencer_editing_get(scene, false);
-  if (ed == NULL) {
-    return false;
-  }
-
-  Sequence *recursive_seq = sequencer_check_scene_recursion(scene, &ed->seqbase);
-
-  if (recursive_seq != NULL) {
-    BKE_reportf(reports,
-                RPT_WARNING,
-                "Recursion detected in video sequencer. Strip %s at frame %d will not be rendered",
-                recursive_seq->name + 2,
-                recursive_seq->startdisp);
-
-    LISTBASE_FOREACH (Sequence *, seq, &ed->seqbase) {
-      if (seq->type != SEQ_TYPE_SCENE && sequencer_seq_generates_image(seq)) {
-        /* There are other strips to render, so render them. */
-        return false;
-      }
-    }
-    /* No other strips to render - cancel operator. */
-    return true;
-  }
-
-  return false;
-}
-
-/* Check if "seq_main" (indirectly) uses strip "seq". */
-bool BKE_sequencer_render_loop_check(Sequence *seq_main, Sequence *seq)
-{
-  if (seq_main == seq) {
-    return true;
-  }
-
-  if ((seq_main->seq1 && BKE_sequencer_render_loop_check(seq_main->seq1, seq)) ||
-      (seq_main->seq2 && BKE_sequencer_render_loop_check(seq_main->seq2, seq)) ||
-      (seq_main->seq3 && BKE_sequencer_render_loop_check(seq_main->seq3, seq))) {
-    return true;
-  }
-
-  SequenceModifierData *smd;
-  for (smd = seq_main->modifiers.first; smd; smd = smd->next) {
-    if (smd->mask_sequence && BKE_sequencer_render_loop_check(smd->mask_sequence, seq)) {
-      return true;
-    }
-  }
-
-  return false;
-}
-
-static void sequencer_flag_users_for_removal(Scene *scene, ListBase *seqbase, Sequence *seq)
-{
-  LISTBASE_FOREACH (Sequence *, user_seq, seqbase) {
-    /* Look in metas for usage of seq. */
-    if (user_seq->type == SEQ_TYPE_META) {
-      sequencer_flag_users_for_removal(scene, &user_seq->seqbase, seq);
-    }
-
-    /* Clear seq from modifiers. */
-    SequenceModifierData *smd;
-    for (smd = user_seq->modifiers.first; smd; smd = smd->next) {
-      if (smd->mask_sequence == seq) {
-        smd->mask_sequence = NULL;
-      }
-    }
-
-    /* Remove effects, that use seq. */
-    if ((user_seq->seq1 && user_seq->seq1 == seq) || (user_seq->seq2 && user_seq->seq2 == seq) ||
-        (user_seq->seq3 && user_seq->seq3 == seq)) {
-      user_seq->flag |= SEQ_FLAG_DELETE;
-      /* Strips can be used as mask even if not in same seqbase. */
-      sequencer_flag_users_for_removal(scene, &scene->ed->seqbase, user_seq);
-    }
-  }
-}
-
-/* Flag seq and its users (effects) for removal. */
-void BKE_sequencer_flag_for_removal(Scene *scene, ListBase *seqbase, Sequence *seq)
-{
-  if (seq == NULL || (seq->flag & SEQ_FLAG_DELETE) != 0) {
-    return;
-  }
-
-  /* Flag and remove meta children. */
-  if (seq->type == SEQ_TYPE_META) {
-    LISTBASE_FOREACH (Sequence *, meta_child, &seq->seqbase) {
-      BKE_sequencer_flag_for_removal(scene, &seq->seqbase, meta_child);
-    }
-  }
-
-  seq->flag |= SEQ_FLAG_DELETE;
-  sequencer_flag_users_for_removal(scene, seqbase, seq);
-}
-
-/* Remove all flagged sequences, return true if sequence is removed. */
-void BKE_sequencer_remove_flagged_sequences(Scene *scene, ListBase *seqbase)
-{
-  LISTBASE_FOREACH_MUTABLE (Sequence *, seq, seqbase) {
-    if (seq->flag & SEQ_FLAG_DELETE) {
-      if (seq->type == SEQ_TYPE_META) {
-        BKE_sequencer_remove_flagged_sequences(scene, &seq->seqbase);
-      }
-      BLI_remlink(seqbase, seq);
-      BKE_sequence_free(scene, seq, true);
-    }
-  }
-}
-
-void BKE_sequencer_check_uuids_unique_and_report(const Scene *scene)
-{
-  if (scene->ed == NULL) {
-    return;
-  }
-
-  struct GSet *used_uuids = BLI_gset_new(
-      BLI_session_uuid_ghash_hash, BLI_session_uuid_ghash_compare, "sequencer used uuids");
-
-  const Sequence *sequence;
-  SEQ_ALL_BEGIN (scene->ed, sequence) {
-    const SessionUUID *session_uuid = &sequence->runtime.session_uuid;
-    if (!BLI_session_uuid_is_generated(session_uuid)) {
-      printf("Sequence %s does not have UUID generated.\n", sequence->name);
-      continue;
-    }
-
-    if (BLI_gset_lookup(used_uuids, session_uuid) != NULL) {
-      printf("Sequence %s has duplicate UUID generated.\n", sequence->name);
-      continue;
-    }
-
-    BLI_gset_insert(used_uuids, (void *)session_uuid);
-  }
-  SEQ_ALL_END;
-
-  BLI_gset_free(used_uuids, NULL);
-}