From a010d97204558e795e323a014fccca1f5a7c59c7 Mon Sep 17 00:00:00 2001
From: Richard Antalik <richardantalik@gmail.com>
Date: Fri, 7 Feb 2020 23:49:37 +0100
Subject: Cleanup: remove old VSE prefetching code.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D6774
---
 source/blender/blenkernel/intern/sequencer.c | 140 ---------------------------
 1 file changed, 140 deletions(-)

(limited to 'source/blender/blenkernel/intern/sequencer.c')

diff --git a/source/blender/blenkernel/intern/sequencer.c b/source/blender/blenkernel/intern/sequencer.c
index 747ce18cada..4dc2177ec75 100644
--- a/source/blender/blenkernel/intern/sequencer.c
+++ b/source/blender/blenkernel/intern/sequencer.c
@@ -4147,146 +4147,6 @@ ImBuf *BKE_sequencer_give_ibuf_direct(const SeqRenderData *context, float cfra,
   return ibuf;
 }
 
-/* *********************** threading api ******************* */
-
-static ListBase running_threads;
-static ListBase prefetch_wait;
-static ListBase prefetch_done;
-
-static pthread_mutex_t queue_lock = PTHREAD_MUTEX_INITIALIZER;
-static pthread_mutex_t wakeup_lock = PTHREAD_MUTEX_INITIALIZER;
-static pthread_cond_t wakeup_cond = PTHREAD_COND_INITIALIZER;
-
-// static pthread_mutex_t prefetch_ready_lock = PTHREAD_MUTEX_INITIALIZER;
-// static pthread_cond_t  prefetch_ready_cond = PTHREAD_COND_INITIALIZER;
-
-static pthread_mutex_t frame_done_lock = PTHREAD_MUTEX_INITIALIZER;
-static pthread_cond_t frame_done_cond = PTHREAD_COND_INITIALIZER;
-
-static volatile bool seq_thread_shutdown = true;
-static volatile int seq_last_given_monoton_cfra = 0;
-static int monoton_cfra = 0;
-
-typedef struct PrefetchThread {
-  struct PrefetchThread *next, *prev;
-
-  Scene *scene;
-  struct PrefetchQueueElem *current;
-  pthread_t pthread;
-  int running;
-
-} PrefetchThread;
-
-typedef struct PrefetchQueueElem {
-  struct PrefetchQueueElem *next, *prev;
-
-  int rectx;
-  int recty;
-  float cfra;
-  int chanshown;
-  int preview_render_size;
-
-  int monoton_cfra;
-
-  ImBuf *ibuf;
-} PrefetchQueueElem;
-
-void BKE_sequencer_give_ibuf_prefetch_request(const SeqRenderData *context,
-                                              float cfra,
-                                              int chanshown)
-{
-  PrefetchQueueElem *e;
-  if (seq_thread_shutdown) {
-    return;
-  }
-
-  e = MEM_callocN(sizeof(PrefetchQueueElem), "prefetch_queue_elem");
-  e->rectx = context->rectx;
-  e->recty = context->recty;
-  e->cfra = cfra;
-  e->chanshown = chanshown;
-  e->preview_render_size = context->preview_render_size;
-  e->monoton_cfra = monoton_cfra++;
-
-  pthread_mutex_lock(&queue_lock);
-  BLI_addtail(&prefetch_wait, e);
-  pthread_mutex_unlock(&queue_lock);
-
-  pthread_mutex_lock(&wakeup_lock);
-  pthread_cond_signal(&wakeup_cond);
-  pthread_mutex_unlock(&wakeup_lock);
-}
-
-ImBuf *BKE_sequencer_give_ibuf_threaded(const SeqRenderData *context, float cfra, int chanshown)
-{
-  PrefetchQueueElem *e = NULL;
-  bool found_something = false;
-
-  if (seq_thread_shutdown) {
-    return BKE_sequencer_give_ibuf(context, cfra, chanshown);
-  }
-
-  while (!e) {
-    bool success = false;
-    pthread_mutex_lock(&queue_lock);
-
-    for (e = prefetch_done.first; e; e = e->next) {
-      if (cfra == e->cfra && chanshown == e->chanshown && context->rectx == e->rectx &&
-          context->recty == e->recty && context->preview_render_size == e->preview_render_size) {
-        success = true;
-        found_something = true;
-        break;
-      }
-    }
-
-    if (!e) {
-      for (e = prefetch_wait.first; e; e = e->next) {
-        if (cfra == e->cfra && chanshown == e->chanshown && context->rectx == e->rectx &&
-            context->recty == e->recty && context->preview_render_size == e->preview_render_size) {
-          found_something = true;
-          break;
-        }
-      }
-    }
-
-    if (!e) {
-      PrefetchThread *tslot;
-
-      for (tslot = running_threads.first; tslot; tslot = tslot->next) {
-        if (tslot->current && cfra == tslot->current->cfra &&
-            chanshown == tslot->current->chanshown && context->rectx == tslot->current->rectx &&
-            context->recty == tslot->current->recty &&
-            context->preview_render_size == tslot->current->preview_render_size) {
-          found_something = true;
-          break;
-        }
-      }
-    }
-
-    /* e->ibuf is unrefed by render thread on next round. */
-
-    if (e) {
-      seq_last_given_monoton_cfra = e->monoton_cfra;
-    }
-
-    pthread_mutex_unlock(&queue_lock);
-
-    if (!success) {
-      e = NULL;
-
-      if (!found_something) {
-        fprintf(stderr, "SEQ-THREAD: Requested frame not in queue ???\n");
-        break;
-      }
-      pthread_mutex_lock(&frame_done_lock);
-      pthread_cond_wait(&frame_done_cond, &frame_done_lock);
-      pthread_mutex_unlock(&frame_done_lock);
-    }
-  }
-
-  return e ? e->ibuf : NULL;
-}
-
 /* check whether sequence cur depends on seq */
 bool BKE_sequence_check_depend(Sequence *seq, Sequence *cur)
 {
-- 
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