picture_pool: change picture_pool_Cancel arguments

Add a boolean to reset the cancel state to false.

include/vlc_picture_pool.h

@@ -160,11 +160,11 @@ unsigned picture_pool_Reset( picture_pool_t * );
 /**
  * Cancel the picture pool.
  *
- * It won't return any pictures via picture_pool_Get or picture_pool_Wait after
- * this call. This function will also unblock picture_pool_Wait. Call
- * picture_pool_Reset to reset the cancel state.
+ * It won't return any pictures via picture_pool_Get or picture_pool_Wait if
+ * canceled is true. This function will also unblock picture_pool_Wait.
+ * picture_pool_Reset will also reset the cancel state to false.
  */
-void picture_pool_Cancel( picture_pool_t * );
+void picture_pool_Cancel( picture_pool_t *, bool canceled );
 
 /**
  * Reserves pictures from a pool and creates a new pool with those.

src/misc/picture_pool.c

@@ -277,12 +277,13 @@ picture_t *picture_pool_Wait(picture_pool_t *pool)
     return clone;
 }
 
-void picture_pool_Cancel(picture_pool_t *pool)
+void picture_pool_Cancel(picture_pool_t *pool, bool canceled)
 {
     vlc_mutex_lock(&pool->lock);
     assert(pool->refs > 0);
 
-    pool->canceled = true;
+    pool->canceled = canceled;
+    if (canceled)
         vlc_cond_broadcast(&pool->wait);
     vlc_mutex_unlock(&pool->lock);
 }

src/video_output/video_output.c

@@ -1457,7 +1457,7 @@ static int ThreadReinit(vout_thread_t *vout,
 
 static void ThreadCancel(vout_thread_t *vout)
 {
-    picture_pool_Cancel(vout->p->decoder_pool);
+    picture_pool_Cancel(vout->p->decoder_pool, true);
 }
 
 static int ThreadControl(vout_thread_t *vout, vout_control_cmd_t cmd)