X-Git-Url: https://git.cinelerra-gg.org/git/?a=blobdiff_plain;f=cinelerra-5.1%2Fcinelerra%2Fplaybackengine.C;h=228f3890b2def426bf3d37f808c81fbeeaabb6ad;hb=f41ee8a0f00338fffb7fd6760a5ecd04c0101a41;hp=71126cf82810c6fce05b7c2a1aa9dae7ce4c273b;hpb=aa9374b902768107ebda0cffe739325ffed372f6;p=goodguy%2Fcinelerra.git

diff --git a/cinelerra-5.1/cinelerra/playbackengine.C b/cinelerra-5.1/cinelerra/playbackengine.C
index 71126cf8..228f3890 100644
--- a/cinelerra-5.1/cinelerra/playbackengine.C
+++ b/cinelerra-5.1/cinelerra/playbackengine.C
@@ -130,7 +130,11 @@ int PlaybackEngine::create_render_engine()
 void PlaybackEngine::delete_render_engine()
 {
 	renderengine_lock->lock("PlaybackEngine::delete_render_engine");
-	delete render_engine;  render_engine = 0;
+	if( render_engine ) {
+		render_engine->interrupt_playback();
+		render_engine->wait_done();
+		delete render_engine;  render_engine = 0;
+	}
 	renderengine_lock->unlock();
 }
 
@@ -407,7 +411,8 @@ void PlaybackEngine::run()
 // Start tracking after arming so the tracking position doesn't change.
 // The tracking for a single frame command occurs during PAUSE
 			init_tracking();
-			clear_output();
+			if( !command->single_frame() )
+				clear_output();
 // Dispatch the command
 			start_render_engine();
 			break;
@@ -534,9 +539,9 @@ int PlaybackEngine::transport_command(int command, int change_type, EDL *new_edl
 // Just change the EDL if the change requires it because renderengine
 // structures won't point to the new EDL otherwise and because copying the
 // EDL for every cursor movement is slow.
-		if( change_type & CHANGE_EDL )
+		if( change_type == CHANGE_EDL || change_type == CHANGE_ALL )
 			next_command->get_edl()->copy_all(new_edl);
-		else if( change_type & CHANGE_PARAMS )
+		else if( change_type == CHANGE_PARAMS )
 			next_command->get_edl()->synchronize_params(new_edl);
 		next_command->set_playback_range(new_edl, use_inout,
 				preferences->forward_render_displacement);