VSE: Automatic proxy building

Build proxies automatically when added to sequencer timeline and when
switching preview size.

This behavior can be disabled in user preferences.

Reviewed By: sergey, fsiddi

Differential Revision: https://developer.blender.org/D10363

1 files changed, 55 insertions, 0 deletions

diff --git a/source/blender/editors/space_sequencer/sequencer_add.c b/source/blender/editors/space_sequencer/sequencer_add.c
index 844dbe6a0a5..63946778a19 100644
--- a/source/blender/editors/space_sequencer/sequencer_add.c
+++ b/source/blender/editors/space_sequencer/sequencer_add.c
@@ -29,6 +29,7 @@
 #include "MEM_guardedalloc.h"
 
 #include "BLI_blenlib.h"
+#include "BLI_ghash.h"
 #include "BLI_math.h"
 #include "BLI_utildefines.h"
 
@@ -37,8 +38,10 @@
 #include "DNA_mask_types.h"
 #include "DNA_scene_types.h"
 #include "DNA_sound_types.h"
+#include "DNA_space_types.h"
 
 #include "BKE_context.h"
+#include "BKE_global.h"
 #include "BKE_lib_id.h"
 #include "BKE_main.h"
 #include "BKE_mask.h"
@@ -55,6 +58,7 @@
 
 #include "SEQ_add.h"
 #include "SEQ_effects.h"
+#include "SEQ_proxy.h"
 #include "SEQ_relations.h"
 #include "SEQ_render.h"
 #include "SEQ_select.h"
@@ -548,6 +552,55 @@ static bool sequencer_add_draw_check_fn(PointerRNA *UNUSED(ptr),
   return !(STR_ELEM(prop_id, "filepath", "directory", "filename"));
 }
 
+/* Strips are added in context of timeline which has different preview size than actual preview. We
+ * must search for preview area. In most cases there will be only one preview area, but there can
+ * be more with different preview sizes. */
+static IMB_Proxy_Size seq_get_proxy_size_flags(bContext *C)
+{
+  bScreen *screen = CTX_wm_screen(C);
+  IMB_Proxy_Size proxy_sizes = 0;
+  LISTBASE_FOREACH (ScrArea *, area, &screen->areabase) {
+    LISTBASE_FOREACH (SpaceLink *, sl, &area->spacedata) {
+      switch (sl->spacetype) {
+        case SPACE_SEQ: {
+          SpaceSeq *sseq = (SpaceSeq *)sl;
+          if (!ELEM(sseq->view, SEQ_VIEW_PREVIEW, SEQ_VIEW_SEQUENCE_PREVIEW)) {
+            continue;
+          }
+          proxy_sizes |= SEQ_rendersize_to_proxysize(sseq->render_size);
+        }
+      }
+    }
+  }
+  return proxy_sizes;
+}
+
+static void seq_build_proxy(bContext *C, Sequence *seq)
+{
+  if (U.sequencer_proxy_setup == USER_SEQ_PROXY_SETUP_AUTOMATIC) {
+    return;
+  }
+
+  /* Enable and set proxy size. */
+  SEQ_proxy_set(seq, true);
+  seq->strip->proxy->build_size_flags = seq_get_proxy_size_flags(C);
+  seq->strip->proxy->build_flags |= SEQ_PROXY_SKIP_EXISTING;
+
+  /* Build proxy. */
+  GSet *file_list = BLI_gset_new(BLI_ghashutil_strhash_p, BLI_ghashutil_strcmp, "file list");
+  wmJob *wm_job = ED_seq_proxy_wm_job_get(C);
+  ProxyJob *pj = ED_seq_proxy_job_get(C, wm_job);
+  SEQ_proxy_rebuild_context(pj->main, pj->depsgraph, pj->scene, seq, file_list, &pj->queue);
+  BLI_gset_free(file_list, MEM_freeN);
+
+  if (!WM_jobs_is_running(wm_job)) {
+    G.is_break = false;
+    WM_jobs_start(CTX_wm_manager(C), wm_job);
+  }
+
+  ED_area_tag_redraw(CTX_wm_area(C));
+}
+
 static void sequencer_add_movie_multiple_strips(bContext *C,
                                                 wmOperator *op,
                                                 SeqLoadData *load_data)
@@ -578,6 +631,7 @@ static void sequencer_add_movie_multiple_strips(bContext *C,
       load_data->start_frame += seq_movie->enddisp - seq_movie->startdisp;
       seq_load_apply_generic_options(C, op, seq_sound);
       seq_load_apply_generic_options(C, op, seq_movie);
+      seq_build_proxy(C, seq_movie);
     }
   }
   RNA_END;
@@ -604,6 +658,7 @@ static bool sequencer_add_movie_single_strip(bContext *C, wmOperator *op, SeqLoa
   }
   seq_load_apply_generic_options(C, op, seq_sound);
   seq_load_apply_generic_options(C, op, seq_movie);
+  seq_build_proxy(C, seq_movie);
 
   return true;
 }