src/framework/mlt_consumer.c

[mlt] / src / framework / mlt_tractor.c

diff --git a/src/framework/mlt_tractor.c b/src/framework/mlt_tractor.c
index 9a1f32e11b092a5107281350f27c2200f9ebe439..8de038be735459d537cdc92493a1e3f3137a26ba 100644 (file)
--- a/src/framework/mlt_tractor.c
+++ b/src/framework/mlt_tractor.c
@@ -323,6 +323,29 @@ static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int tra
                                // Check for last track
                                done = mlt_properties_get_int( temp_properties, "last_track" );
 
+                               // Handle fx only tracks
+                               if ( mlt_properties_get_int( temp_properties, "meta.fx_cut" ) )
+                               {
+                                       // Take all but the first placeholding producer and dump on to the image stack
+                                       if ( video )
+                                       {
+                                               void *p = mlt_deque_pop_front( MLT_FRAME_IMAGE_STACK( temp ) );
+                                               while ( ( p = mlt_deque_pop_front( MLT_FRAME_IMAGE_STACK( temp ) ) ) != NULL )
+                                                       mlt_deque_push_back( MLT_FRAME_IMAGE_STACK( video ), p );
+                                       }
+
+                                       // Take all but the first placeholding producer and dump on to the audio stack
+                                       if ( audio )
+                                       {
+                                               void *p = mlt_deque_pop_front( MLT_FRAME_AUDIO_STACK( temp ) );
+                                               while ( ( p = mlt_deque_pop_front( MLT_FRAME_AUDIO_STACK( temp ) ) ) != NULL )
+                                                       mlt_deque_push_back( MLT_FRAME_AUDIO_STACK( audio ), p );
+                                       }
+
+                                       // Ensure everything is hidden
+                                       mlt_properties_set_int( temp_properties, "hide", 3 );
+                               }
+
                                // We store all frames with a destructor on the output frame
                                sprintf( label, "_%s_%d", id, count ++ );
                                mlt_properties_set_data( frame_properties, label, temp, 0, ( mlt_destructor )mlt_frame_close, NULL );