int mlt_producer_seek( mlt_producer self, mlt_position position ) { // Determine eof handling mlt_properties properties = MLT_PRODUCER_PROPERTIES( self ); char *eof = mlt_properties_get( properties, "eof" ); int use_points = 1 - mlt_properties_get_int( properties, "ignore_points" ); // Recursive behaviour for cuts - repositions parent and then repositions cut // hence no return on this condition if ( mlt_producer_is_cut( self ) ) mlt_producer_seek( mlt_producer_cut_parent( self ), position + mlt_producer_get_in( self ) ); // Check bounds if ( position < 0 || mlt_producer_get_playtime( self ) == 0 ) { position = 0; } else if ( use_points && ( eof == NULL || !strcmp( eof, "pause" ) ) && position >= mlt_producer_get_playtime( self ) ) { mlt_producer_set_speed( self, 0 ); position = mlt_producer_get_playtime( self ) - 1; } else if ( use_points && eof && !strcmp( eof, "loop" ) && position >= mlt_producer_get_playtime( self ) ) { position = (int)position % (int)mlt_producer_get_playtime( self ); } // Set the position mlt_properties_set_position( MLT_PRODUCER_PROPERTIES( self ), "_position", position ); // Calculate the absolute frame mlt_properties_set_position( MLT_PRODUCER_PROPERTIES( self ), "_frame", use_points * mlt_producer_get_in( self ) + position ); return 0; }
void MltRuntime::set_speed(double sp) throw(Exception) { Lock lk(&run_lock); if (producer == NULL) throw_error(ErrorRuntimeStatusError); mlt_producer_set_speed(producer, sp); }
void transport_action( mlt_producer producer, char *value ) { mlt_properties properties = mlt_producer_properties( producer ); switch( value[ 0 ] ) { case 'q': mlt_properties_set_int( properties, "done", 1 ); break; case '0': mlt_producer_set_speed( producer, 1 ); mlt_producer_seek( producer, 0 ); break; case '1': mlt_producer_set_speed( producer, -5 ); break; case '2': mlt_producer_set_speed( producer, -2.5 ); break; case '3': mlt_producer_set_speed( producer, -1 ); break; case '4': mlt_producer_set_speed( producer, -0.5 ); break; case '5': mlt_producer_set_speed( producer, 0 ); break; case '6': mlt_producer_set_speed( producer, 0.5 ); break; case '7': mlt_producer_set_speed( producer, 1 ); break; case '8': mlt_producer_set_speed( producer, 2.5 ); break; case '9': mlt_producer_set_speed( producer, 5 ); break; } }
static void on_jack_stopped( mlt_properties owner, mlt_consumer consumer, mlt_position *position ) { mlt_producer producer = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES(consumer), "transport_producer", NULL ); if ( producer ) { mlt_producer_set_speed( producer, 0 ); mlt_consumer_purge( consumer ); mlt_producer_seek( producer, *position ); mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 ); } }
static void on_jack_started( mlt_properties owner, mlt_consumer consumer, mlt_position *position ) { mlt_producer producer = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES(consumer), "transport_producer", NULL ); if ( producer ) { if ( mlt_producer_get_speed( producer ) != 0 ) { mlt_properties jack = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES( consumer ), "jack_filter", NULL ); mlt_events_fire( jack, "jack-stop", NULL ); } else { mlt_producer_set_speed( producer, 1 ); mlt_consumer_purge( consumer ); mlt_producer_seek( producer, *position ); mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 ); } } }
static void transport_action( mlt_producer producer, char *value ) { mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer ); mlt_multitrack multitrack = mlt_properties_get_data( properties, "multitrack", NULL ); mlt_consumer consumer = mlt_properties_get_data( properties, "transport_consumer", NULL ); mlt_properties jack = mlt_properties_get_data( MLT_CONSUMER_PROPERTIES( consumer ), "jack_filter", NULL ); mlt_position position = producer? mlt_producer_position( producer ) : 0; mlt_properties_set_int( properties, "stats_off", 1 ); if ( strlen( value ) == 1 ) { switch( value[ 0 ] ) { case 'q': case 'Q': mlt_properties_set_int( properties, "done", 1 ); mlt_events_fire( jack, "jack-stop", NULL ); break; case '0': position = 0; mlt_producer_set_speed( producer, 1 ); mlt_producer_seek( producer, position ); mlt_consumer_purge( consumer ); mlt_events_fire( jack, "jack-seek", &position, NULL ); break; case '1': mlt_producer_set_speed( producer, -10 ); break; case '2': mlt_producer_set_speed( producer, -5 ); break; case '3': mlt_producer_set_speed( producer, -2 ); break; case '4': mlt_producer_set_speed( producer, -1 ); break; case '5': mlt_producer_set_speed( producer, 0 ); mlt_consumer_purge( consumer ); mlt_producer_seek( producer, mlt_consumer_position( consumer ) + 1 ); mlt_events_fire( jack, "jack-stop", NULL ); break; case '6': case ' ': if ( !jack || mlt_producer_get_speed( producer ) != 0 ) mlt_producer_set_speed( producer, 1 ); mlt_consumer_purge( consumer ); mlt_events_fire( jack, "jack-start", NULL ); break; case '7': mlt_producer_set_speed( producer, 2 ); break; case '8': mlt_producer_set_speed( producer, 5 ); break; case '9': mlt_producer_set_speed( producer, 10 ); break; case 'd': if ( multitrack != NULL ) { int i = 0; mlt_position last = -1; fprintf( stderr, "\n" ); for ( i = 0; 1; i ++ ) { position = mlt_multitrack_clip( multitrack, mlt_whence_relative_start, i ); if ( position == last ) break; last = position; fprintf( stderr, "%d: %d\n", i, (int)position ); } } break; case 'g': if ( multitrack != NULL ) { position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, 0 ); mlt_producer_seek( producer, position ); mlt_consumer_purge( consumer ); mlt_events_fire( jack, "jack-seek", &position, NULL ); } break; case 'H': if ( producer != NULL ) { position -= mlt_producer_get_fps( producer ) * 60; mlt_consumer_purge( consumer ); mlt_producer_seek( producer, position ); mlt_events_fire( jack, "jack-seek", &position, NULL ); } break; case 'h': if ( producer != NULL ) { position--; mlt_producer_set_speed( producer, 0 ); mlt_consumer_purge( consumer ); mlt_producer_seek( producer, position ); mlt_events_fire( jack, "jack-stop", NULL ); mlt_events_fire( jack, "jack-seek", &position, NULL ); } break; case 'j': if ( multitrack != NULL ) { position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, 1 ); mlt_consumer_purge( consumer ); mlt_producer_seek( producer, position ); mlt_events_fire( jack, "jack-seek", &position, NULL ); } break; case 'k': if ( multitrack != NULL ) { position = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, -1 ); mlt_consumer_purge( consumer ); mlt_producer_seek( producer, position ); mlt_events_fire( jack, "jack-seek", &position, NULL ); } break; case 'l': if ( producer != NULL ) { position++; mlt_consumer_purge( consumer ); if ( mlt_producer_get_speed( producer ) != 0 ) { mlt_producer_set_speed( producer, 0 ); mlt_events_fire( jack, "jack-stop", NULL ); } else { mlt_producer_seek( producer, position ); mlt_events_fire( jack, "jack-seek", &position, NULL ); } } break; case 'L': if ( producer != NULL ) { position += mlt_producer_get_fps( producer ) * 60; mlt_consumer_purge( consumer ); mlt_producer_seek( producer, position ); mlt_events_fire( jack, "jack-seek", &position, NULL ); } break; } mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 ); } mlt_properties_set_int( properties, "stats_off", 0 ); }
mlt_producer producer_framebuffer_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg ) { if ( !arg ) return NULL; mlt_producer producer = NULL; producer = calloc( 1, sizeof( struct mlt_producer_s ) ); mlt_producer_init( producer, NULL ); // Wrap loader mlt_producer real_producer; // Check if a speed was specified. /** * Speed must be appended to the filename with '?'. To play your video at 50%: melt framebuffer:my_video.mpg?0.5 * Stroboscope effect can be obtained by adding a stobe=x parameter, where x is the number of frames that will be ignored. * You can play the movie backwards by adding reverse=1 * You can freeze the clip at a determined position by adding freeze=frame_pos add freeze_after=1 to freeze only paste position or freeze_before to freeze before it **/ double speed = 0.0; char *props = strdup( arg ); char *ptr = strrchr( props, '?' ); if ( ptr ) { speed = atof( ptr + 1 ); if ( speed != 0.0 ) // If speed was valid, then strip it and the delimiter. // Otherwise, an invalid speed probably means this '?' was not a delimiter. *ptr = '\0'; } real_producer = mlt_factory_producer( profile, "abnormal", props ); free( props ); if (speed == 0.0) speed = 1.0; if ( producer != NULL && real_producer != NULL) { // Get the properties of this producer mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer ); mlt_properties_set( properties, "resource", arg); // Store the producer and fitler mlt_properties_set_data( properties, "producer", real_producer, 0, ( mlt_destructor )mlt_producer_close, NULL ); // Grab some stuff from the real_producer mlt_properties_pass_list( properties, MLT_PRODUCER_PROPERTIES( real_producer ), "length, width, height, aspect_ratio" ); if ( speed < 0 ) { speed = -speed; mlt_properties_set_int( properties, "reverse", 1 ); } if ( speed != 1.0 ) { double real_length = ( (double) mlt_producer_get_length( real_producer ) ) / speed; mlt_properties_set_position( properties, "length", real_length ); } mlt_properties_set_position( properties, "out", mlt_producer_get_length( producer ) - 1 ); // Since we control the seeking, prevent it from seeking on its own mlt_producer_set_speed( real_producer, 0 ); mlt_producer_set_speed( producer, speed ); // Override the get_frame method producer->get_frame = producer_get_frame; } else { if ( producer ) mlt_producer_close( producer ); if ( real_producer ) mlt_producer_close( real_producer ); producer = NULL; } return producer; }
static void transport_action( mlt_producer producer, char *value ) { mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer ); mlt_multitrack multitrack = mlt_properties_get_data( properties, "multitrack", NULL ); mlt_consumer consumer = mlt_properties_get_data( properties, "transport_consumer", NULL ); mlt_properties_set_int( properties, "stats_off", 1 ); if ( strlen( value ) == 1 ) { switch( value[ 0 ] ) { case 'q': mlt_properties_set_int( properties, "done", 1 ); break; case '0': mlt_producer_set_speed( producer, 1 ); mlt_producer_seek( producer, 0 ); break; case '1': mlt_producer_set_speed( producer, -10 ); break; case '2': mlt_producer_set_speed( producer, -5 ); break; case '3': mlt_producer_set_speed( producer, -2 ); break; case '4': mlt_producer_set_speed( producer, -1 ); break; case '5': mlt_producer_set_speed( producer, 0 ); break; case '6': case ' ': mlt_producer_set_speed( producer, 1 ); break; case '7': mlt_producer_set_speed( producer, 2 ); break; case '8': mlt_producer_set_speed( producer, 5 ); break; case '9': mlt_producer_set_speed( producer, 10 ); break; case 'd': if ( multitrack != NULL ) { int i = 0; mlt_position last = -1; fprintf( stderr, "\n" ); for ( i = 0; 1; i ++ ) { mlt_position time = mlt_multitrack_clip( multitrack, mlt_whence_relative_start, i ); if ( time == last ) break; last = time; fprintf( stderr, "%d: %d\n", i, (int)time ); } } break; case 'g': if ( multitrack != NULL ) { mlt_position time = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, 0 ); mlt_producer_seek( producer, time ); } break; case 'H': if ( producer != NULL ) { mlt_position position = mlt_producer_position( producer ); mlt_producer_seek( producer, position - ( mlt_producer_get_fps( producer ) * 60 ) ); } break; case 'h': if ( producer != NULL ) { mlt_position position = mlt_producer_position( producer ); mlt_producer_set_speed( producer, 0 ); mlt_producer_seek( producer, position - 1 ); } break; case 'j': if ( multitrack != NULL ) { mlt_position time = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, 1 ); mlt_producer_seek( producer, time ); } break; case 'k': if ( multitrack != NULL ) { mlt_position time = mlt_multitrack_clip( multitrack, mlt_whence_relative_current, -1 ); mlt_producer_seek( producer, time ); } break; case 'l': if ( producer != NULL ) { mlt_position position = mlt_producer_position( producer ); if ( mlt_producer_get_speed( producer ) != 0 ) mlt_producer_set_speed( producer, 0 ); else mlt_producer_seek( producer, position + 1 ); } break; case 'L': if ( producer != NULL ) { mlt_position position = mlt_producer_position( producer ); mlt_producer_seek( producer, position + ( mlt_producer_get_fps( producer ) * 60 ) ); } break; } mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( consumer ), "refresh", 1 ); } mlt_properties_set_int( properties, "stats_off", 0 ); }
static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int track ) { mlt_tractor self = parent->child; // We only respond to the first track requests if ( track == 0 && self->producer != NULL ) { int i = 0; int done = 0; mlt_frame temp = NULL; int count = 0; int image_count = 0; // Get the properties of the parent producer mlt_properties properties = MLT_PRODUCER_PROPERTIES( parent ); // Try to obtain the multitrack associated to the tractor mlt_multitrack multitrack = mlt_properties_get_data( properties, "multitrack", NULL ); // Or a specific producer mlt_producer producer = mlt_properties_get_data( properties, "producer", NULL ); // Determine whether this tractor feeds to the consumer or stops here int global_feed = mlt_properties_get_int( properties, "global_feed" ); // If we don't have one, we're in trouble... if ( multitrack != NULL ) { // The output frame will hold the 'global' data feeds (ie: those which are targetted for the final frame) mlt_deque data_queue = mlt_deque_init( ); // Used to garbage collect all frames char label[ 30 ]; // Get the id of the tractor char *id = mlt_properties_get( properties, "_unique_id" ); // Will be used to store the frame properties object mlt_properties frame_properties = NULL; // We'll store audio and video frames to use here mlt_frame audio = NULL; mlt_frame video = NULL; mlt_frame first_video = NULL; // Temporary properties mlt_properties temp_properties = NULL; // Get the multitrack's producer mlt_producer target = MLT_MULTITRACK_PRODUCER( multitrack ); mlt_producer_seek( target, mlt_producer_frame( parent ) ); mlt_producer_set_speed( target, mlt_producer_get_speed( parent ) ); // We will create one frame and attach everything to it *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( parent ) ); // Get the properties of the frame frame_properties = MLT_FRAME_PROPERTIES( *frame ); // Loop through each of the tracks we're harvesting for ( i = 0; !done; i ++ ) { // Get a frame from the producer mlt_service_get_frame( self->producer, &temp, i ); // Get the temporary properties temp_properties = MLT_FRAME_PROPERTIES( temp ); // Pass all unique meta properties from the producer's frame to the new frame mlt_properties_lock( temp_properties ); int props_count = mlt_properties_count( temp_properties ); int j; for ( j = 0; j < props_count; j ++ ) { char *name = mlt_properties_get_name( temp_properties, j ); if ( !strncmp( name, "meta.", 5 ) && !mlt_properties_get( frame_properties, name ) ) mlt_properties_set( frame_properties, name, mlt_properties_get_value( temp_properties, j ) ); } mlt_properties_unlock( temp_properties ); // Copy the format conversion virtual functions if ( ! (*frame)->convert_image && temp->convert_image ) (*frame)->convert_image = temp->convert_image; if ( ! (*frame)->convert_audio && temp->convert_audio ) (*frame)->convert_audio = temp->convert_audio; // Check for last track done = mlt_properties_get_int( temp_properties, "last_track" ); // Handle fx only tracks if ( mlt_properties_get_int( temp_properties, "fx_cut" ) ) { int hide = ( video == NULL ? 1 : 0 ) | ( audio == NULL ? 2 : 0 ); mlt_properties_set_int( temp_properties, "hide", hide ); } // 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 ); // We want to append all 'final' feeds to the global queue if ( !done && mlt_properties_get_data( temp_properties, "data_queue", NULL ) != NULL ) { // Move the contents of this queue on to the output frames data queue mlt_deque sub_queue = mlt_properties_get_data( MLT_FRAME_PROPERTIES( temp ), "data_queue", NULL ); mlt_deque temp = mlt_deque_init( ); while ( global_feed && mlt_deque_count( sub_queue ) ) { mlt_properties p = mlt_deque_pop_back( sub_queue ); if ( mlt_properties_get_int( p, "final" ) ) mlt_deque_push_back( data_queue, p ); else mlt_deque_push_back( temp, p ); } while( mlt_deque_count( temp ) ) mlt_deque_push_front( sub_queue, mlt_deque_pop_back( temp ) ); mlt_deque_close( temp ); } // Now do the same with the global queue but without the conditional behaviour if ( mlt_properties_get_data( temp_properties, "global_queue", NULL ) != NULL ) { mlt_deque sub_queue = mlt_properties_get_data( MLT_FRAME_PROPERTIES( temp ), "global_queue", NULL ); while ( mlt_deque_count( sub_queue ) ) { mlt_properties p = mlt_deque_pop_back( sub_queue ); mlt_deque_push_back( data_queue, p ); } } // Pick up first video and audio frames if ( !done && !mlt_frame_is_test_audio( temp ) && !( mlt_properties_get_int( temp_properties, "hide" ) & 2 ) ) { // Order of frame creation is starting to get problematic if ( audio != NULL ) { mlt_deque_push_front( MLT_FRAME_AUDIO_STACK( temp ), producer_get_audio ); mlt_deque_push_front( MLT_FRAME_AUDIO_STACK( temp ), audio ); } audio = temp; } if ( !done && !mlt_frame_is_test_card( temp ) && !( mlt_properties_get_int( temp_properties, "hide" ) & 1 ) ) { if ( video != NULL ) { mlt_deque_push_front( MLT_FRAME_IMAGE_STACK( temp ), producer_get_image ); mlt_deque_push_front( MLT_FRAME_IMAGE_STACK( temp ), video ); } video = temp; if ( first_video == NULL ) first_video = temp; mlt_properties_set_int( MLT_FRAME_PROPERTIES( temp ), "image_count", ++ image_count ); image_count = 1; } } // Now stack callbacks if ( audio != NULL ) { mlt_frame_push_audio( *frame, audio ); mlt_frame_push_audio( *frame, producer_get_audio ); } if ( video != NULL ) { mlt_properties video_properties = MLT_FRAME_PROPERTIES( first_video ); mlt_frame_push_service( *frame, video ); mlt_frame_push_service( *frame, producer_get_image ); if ( global_feed ) mlt_properties_set_data( frame_properties, "data_queue", data_queue, 0, NULL, NULL ); mlt_properties_set_data( video_properties, "global_queue", data_queue, 0, destroy_data_queue, NULL ); mlt_properties_set_int( frame_properties, "width", mlt_properties_get_int( video_properties, "width" ) ); mlt_properties_set_int( frame_properties, "height", mlt_properties_get_int( video_properties, "height" ) ); mlt_properties_pass_list( frame_properties, video_properties, "meta.media.width, meta.media.height" ); mlt_properties_set_int( frame_properties, "progressive", mlt_properties_get_int( video_properties, "progressive" ) ); mlt_properties_set_double( frame_properties, "aspect_ratio", mlt_properties_get_double( video_properties, "aspect_ratio" ) ); mlt_properties_set_int( frame_properties, "image_count", image_count ); mlt_properties_set_data( frame_properties, "_producer", mlt_frame_get_original_producer( first_video ), 0, NULL, NULL ); } else { destroy_data_queue( data_queue ); } mlt_frame_set_position( *frame, mlt_producer_frame( parent ) ); mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame ), "test_audio", audio == NULL ); mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame ), "test_image", video == NULL ); } else if ( producer != NULL ) { mlt_producer_seek( producer, mlt_producer_frame( parent ) ); mlt_producer_set_speed( producer, mlt_producer_get_speed( parent ) ); mlt_service_get_frame( self->producer, frame, track ); } else { mlt_log( MLT_PRODUCER_SERVICE( parent ), MLT_LOG_ERROR, "tractor without a multitrack!!\n" ); mlt_service_get_frame( self->producer, frame, track ); } // Prepare the next frame mlt_producer_prepare_next( parent ); // Indicate our found status return 0; } else { // Generate a test card *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( parent ) ); return 0; } }
static int get_frame( mlt_producer self, mlt_frame_ptr frame, int index ) { mlt_properties properties = MLT_PRODUCER_PROPERTIES(self); context cx = mlt_properties_get_data( properties, "context", NULL ); if ( !cx ) { // Allocate and initialize our context cx = mlt_pool_alloc( sizeof( struct context_s ) ); memset( cx, 0, sizeof( *cx ) ); mlt_properties_set_data( properties, "context", cx, 0, mlt_pool_release, NULL ); cx->self = self; char *profile_name = mlt_properties_get( properties, "profile" ); if ( !profile_name ) profile_name = mlt_properties_get( properties, "mlt_profile" ); mlt_profile profile = mlt_service_profile( MLT_PRODUCER_SERVICE( self ) ); if ( profile_name ) { cx->profile = mlt_profile_init( profile_name ); cx->profile->is_explicit = 1; } else { cx->profile = mlt_profile_clone( profile ); cx->profile->is_explicit = 0; } // Encapsulate a real producer for the resource cx->producer = mlt_factory_producer( cx->profile, NULL, mlt_properties_get( properties, "resource" ) ); if ( ( profile_name && !strcmp( profile_name, "auto" ) ) || mlt_properties_get_int( properties, "autoprofile" ) ) { mlt_profile_from_producer( cx->profile, cx->producer ); mlt_producer_close( cx->producer ); cx->producer = mlt_factory_producer( cx->profile, NULL, mlt_properties_get( properties, "resource" ) ); } // Since we control the seeking, prevent it from seeking on its own mlt_producer_set_speed( cx->producer, 0 ); cx->audio_position = -1; // We will encapsulate a consumer cx->consumer = mlt_consumer_new( cx->profile ); // Do not use _pass_list on real_time so that it defaults to 0 in the absence of // an explicit real_time property. mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( cx->consumer ), "real_time", mlt_properties_get_int( properties, "real_time" ) ); mlt_properties_pass_list( MLT_CONSUMER_PROPERTIES( cx->consumer ), properties, "buffer, prefill, deinterlace_method, rescale" ); // Connect it all together mlt_consumer_connect( cx->consumer, MLT_PRODUCER_SERVICE( cx->producer ) ); mlt_consumer_start( cx->consumer ); } // Generate a frame *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( self ) ); if ( *frame ) { // Seek the producer to the correct place // Calculate our positions double actual_position = (double) mlt_producer_frame( self ); if ( mlt_producer_get_speed( self ) != 0 ) actual_position *= mlt_producer_get_speed( self ); mlt_position need_first = floor( actual_position ); mlt_producer_seek( cx->producer, lrint( need_first * mlt_profile_fps( cx->profile ) / mlt_producer_get_fps( self ) ) ); // Get the nested frame mlt_frame nested_frame = mlt_consumer_rt_frame( cx->consumer ); // Stack the producer and our methods on the nested frame mlt_frame_push_service( *frame, nested_frame ); mlt_frame_push_service( *frame, cx ); mlt_frame_push_get_image( *frame, get_image ); mlt_frame_push_audio( *frame, nested_frame ); mlt_frame_push_audio( *frame, cx ); mlt_frame_push_audio( *frame, get_audio ); // Give the returned frame temporal identity mlt_frame_set_position( *frame, mlt_producer_position( self ) ); // Store the nested frame on the produced frame for destruction mlt_properties frame_props = MLT_FRAME_PROPERTIES( *frame ); mlt_properties_set_data( frame_props, "_producer_consumer.frame", nested_frame, 0, (mlt_destructor) mlt_frame_close, NULL ); // Inform the normalizers about our video properties mlt_properties_set_double( frame_props, "aspect_ratio", mlt_profile_sar( cx->profile ) ); mlt_properties_set_int( frame_props, "width", cx->profile->width ); mlt_properties_set_int( frame_props, "height", cx->profile->height ); mlt_properties_set_int( frame_props, "meta.media.width", cx->profile->width ); mlt_properties_set_int( frame_props, "meta.media.height", cx->profile->height ); mlt_properties_set_int( frame_props, "progressive", cx->profile->progressive ); } // Calculate the next timecode mlt_producer_prepare_next( self ); return 0; }