#include "mlt_tractor.h"
#include "mlt_frame.h"
#include "mlt_multitrack.h"
+#include "mlt_field.h"
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
/** Private structure.
*/
*/
static int producer_get_frame( mlt_producer this, mlt_frame_ptr frame, int track );
+static void mlt_tractor_listener( mlt_multitrack tracks, mlt_tractor this );
/** Constructor for the tractor.
-
- TODO: thread this service...
*/
mlt_tractor mlt_tractor_init( )
mlt_producer producer = &this->parent;
if ( mlt_producer_init( producer, this ) == 0 )
{
+ mlt_properties_set( mlt_producer_properties( producer ), "resource", "<tractor>" );
+ mlt_properties_set( mlt_producer_properties( producer ), "mlt_type", "mlt_producer" );
+ mlt_properties_set( mlt_producer_properties( producer ), "mlt_service", "tractor" );
+
producer->get_frame = producer_get_frame;
+ producer->close = ( mlt_destructor )mlt_tractor_close;
+ producer->close_object = this;
+ }
+ else
+ {
+ free( this );
+ this = NULL;
+ }
+ }
+ return this;
+}
+
+mlt_tractor mlt_tractor_new( )
+{
+ mlt_tractor this = calloc( sizeof( struct mlt_tractor_s ), 1 );
+ if ( this != NULL )
+ {
+ mlt_producer producer = &this->parent;
+ if ( mlt_producer_init( producer, this ) == 0 )
+ {
+ mlt_multitrack multitrack = mlt_multitrack_init( );
+ mlt_field field = mlt_field_new( multitrack, this );
+ mlt_properties props = mlt_producer_properties( producer );
+
+ mlt_properties_set( props, "resource", "<tractor>" );
+ mlt_properties_set( props, "mlt_type", "mlt_producer" );
+ mlt_properties_set( props, "mlt_service", "tractor" );
+ mlt_properties_set_position( props, "in", 0 );
+ mlt_properties_set_position( props, "out", 0 );
+ mlt_properties_set_position( props, "length", 0 );
+ mlt_properties_set_data( props, "multitrack", multitrack, 0, ( mlt_destructor )mlt_multitrack_close, NULL );
+ mlt_properties_set_data( props, "field", field, 0, ( mlt_destructor )mlt_field_close, NULL );
+
+ mlt_events_listen( mlt_multitrack_properties( multitrack ), this, "producer-changed", ( mlt_listener )mlt_tractor_listener );
+
+ producer->get_frame = producer_get_frame;
+ producer->close = ( mlt_destructor )mlt_tractor_close;
+ producer->close_object = this;
}
else
{
mlt_producer mlt_tractor_producer( mlt_tractor this )
{
- return &this->parent;
+ return this != NULL ? &this->parent : NULL;
}
/** Get the properties object associated to the tractor.
return mlt_producer_properties( &this->parent );
}
+/** Get the field this tractor is harvesting.
+*/
+
+mlt_field mlt_tractor_field( mlt_tractor this )
+{
+ return mlt_properties_get_data( mlt_tractor_properties( this ), "field", NULL );
+}
+
+/** Get the multitrack this tractor is pulling.
+*/
+
+mlt_multitrack mlt_tractor_multitrack( mlt_tractor this )
+{
+ return mlt_properties_get_data( mlt_tractor_properties( this ), "multitrack", NULL );
+}
+
+/** Ensure the tractors in/out points match the multitrack.
+*/
+
+void mlt_tractor_refresh( mlt_tractor this )
+{
+ mlt_multitrack multitrack = mlt_tractor_multitrack( this );
+ mlt_properties properties = mlt_multitrack_properties( multitrack );
+ mlt_properties self = mlt_tractor_properties( this );
+ mlt_events_block( properties, self );
+ mlt_events_block( self, self );
+ mlt_multitrack_refresh( multitrack );
+ mlt_properties_set_position( self, "in", 0 );
+ mlt_properties_set_position( self, "out", mlt_properties_get_position( properties, "out" ) );
+ mlt_events_unblock( self, self );
+ mlt_events_unblock( properties, self );
+ mlt_properties_set_position( self, "length", mlt_properties_get_position( properties, "length" ) );
+}
+
+static void mlt_tractor_listener( mlt_multitrack tracks, mlt_tractor this )
+{
+ mlt_tractor_refresh( this );
+}
+
/** Connect the tractor.
*/
return ret;
}
-/** Get the next frame.
+/** Set the producer for a specific track.
+*/
- TODO: This should be reading a pump being populated by the thread...
+int mlt_tractor_set_track( mlt_tractor this, mlt_producer producer, int index )
+{
+ return mlt_multitrack_connect( mlt_tractor_multitrack( this ), producer, index );
+}
+
+/** Get the producer for a specific track.
+*/
+
+mlt_producer mlt_tractor_get_track( mlt_tractor this, int index )
+{
+ return mlt_multitrack_track( mlt_tractor_multitrack( this ), index );
+}
+
+static int producer_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
+{
+ uint8_t *data = NULL;
+ mlt_properties properties = mlt_frame_properties( this );
+ mlt_frame frame = mlt_frame_pop_service( this );
+ mlt_properties frame_properties = mlt_frame_properties( frame );
+ mlt_properties_set_int( frame_properties, "width", mlt_properties_get_int( properties, "width" ) );
+ mlt_properties_set_int( frame_properties, "height", mlt_properties_get_int( properties, "height" ) );
+ mlt_properties_set( frame_properties, "rescale.interp", mlt_properties_get( properties, "rescale.interp" ) );
+ if ( mlt_properties_get( properties, "distort" ) )
+ mlt_properties_set( frame_properties, "distort", mlt_properties_get( properties, "distort" ) );
+ mlt_properties_set_double( frame_properties, "consumer_aspect_ratio", mlt_properties_get_double( properties, "consumer_aspect_ratio" ) );
+ mlt_properties_set_int( frame_properties, "consumer_deinterlace", mlt_properties_get_double( properties, "consumer_deinterlace" ) );
+ mlt_properties_set_int( frame_properties, "normalised_width", mlt_properties_get_double( properties, "normalised_width" ) );
+ mlt_properties_set_int( frame_properties, "normalised_height", mlt_properties_get_double( properties, "normalised_height" ) );
+ mlt_frame_get_image( frame, buffer, format, width, height, writable );
+ mlt_properties_set_data( properties, "image", *buffer, *width * *height * 2, NULL, NULL );
+ mlt_properties_set_int( properties, "width", *width );
+ mlt_properties_set_int( properties, "height", *height );
+ mlt_properties_set_double( properties, "aspect_ratio", mlt_frame_get_aspect_ratio( frame ) );
+ mlt_properties_set_int( properties, "progressive", mlt_properties_get_int( frame_properties, "progressive" ) );
+ if ( mlt_properties_get( frame_properties, "distort" ) )
+ mlt_properties_set( properties, "distort", mlt_properties_get( frame_properties, "distort" ) );
+ data = mlt_frame_get_alpha_mask( frame );
+ mlt_properties_set_data( properties, "alpha", data, 0, NULL, NULL );
+ return 0;
+}
+
+static int producer_get_audio( mlt_frame this, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
+{
+ mlt_properties properties = mlt_frame_properties( this );
+ mlt_frame frame = mlt_frame_pop_audio( this );
+ mlt_frame_get_audio( frame, buffer, format, frequency, channels, samples );
+ mlt_properties_set_data( properties, "audio", *buffer, 0, NULL, NULL );
+ mlt_properties_set_int( properties, "frequency", *frequency );
+ mlt_properties_set_int( properties, "channels", *channels );
+ return 0;
+}
+
+/** Get the next frame.
*/
static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int track )
if ( track == 0 && this->producer != NULL )
{
int i = 0;
- int looking = 1;
int done = 0;
- mlt_frame temp;
+ mlt_frame temp = NULL;
+ int 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 );
+
// If we don't have one, we're in trouble...
if ( multitrack != NULL )
{
+ // 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;
+
+ // Determine which data_queue to pass on...
+ void *data_queue = 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 ) );
- mlt_producer_set_in_and_out( parent, mlt_producer_get_in( target ), mlt_producer_get_out( target ) );
- }
- else
- {
- fprintf( stderr, "tractor without a multitrack!!\n" );
- }
- // Loop through each of the tracks we're harvesting
- for ( i = 0; !done; i ++ )
- {
- // Get a frame from the producer
- mlt_service_get_frame( this->producer, &temp, i );
+ // We will create one frame and attach everything to it
+ *frame = mlt_frame_init( );
- // Check for last track
- done = mlt_properties_get_int( mlt_frame_properties( temp ), "last_track" );
+ // Get the properties of the frame
+ frame_properties = mlt_frame_properties( *frame );
- // Handle the frame
- if ( done && looking )
+ // Loop through each of the tracks we're harvesting
+ for ( i = 0; !done; i ++ )
{
- // Use this as output if we don't have one already
- *frame = temp;
+ // Get a frame from the producer
+ mlt_service_get_frame( this->producer, &temp, i );
+
+ // Get the temporary properties
+ temp_properties = mlt_frame_properties( temp );
+
+ // Check for last track
+ done = mlt_properties_get_int( temp_properties, "last_track" );
+
+ // 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 the last data_queue
+ if ( !done && mlt_properties_get_data( temp_properties, "data_queue", NULL ) != NULL )
+ data_queue = mlt_properties_get_data( mlt_frame_properties( temp ), "data_queue", NULL );
+
+ // Pick up first video and audio frames
+ if ( !done && !mlt_frame_is_test_audio( temp ) && !( mlt_properties_get_int( temp_properties, "hide" ) & 2 ) )
+ audio = temp;
+ if ( !done && !mlt_frame_is_test_card( temp ) && !( mlt_properties_get_int( temp_properties, "hide" ) & 1 ) )
+ video = temp;
}
- else if ( !mlt_frame_is_test_card( temp ) && looking )
+
+ // Now stack callbacks
+ if ( audio != NULL )
{
- // This is the one we want and we can stop looking
- *frame = temp;
- looking = 0;
+ mlt_frame_push_audio( *frame, audio );
+ ( *frame )->get_audio = producer_get_audio;
}
- else
+
+ if ( video != NULL )
{
- // We discard all other frames
- mlt_frame_close( temp );
+ mlt_properties video_properties = mlt_frame_properties( video );
+ mlt_frame_push_service( *frame, video );
+ mlt_frame_push_service( *frame, producer_get_image );
+ mlt_properties_set_data( frame_properties, "data_queue", data_queue, 0, NULL, 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_set_int( frame_properties, "real_width", mlt_properties_get_int( video_properties, "real_width" ) );
+ mlt_properties_set_int( frame_properties, "real_height", mlt_properties_get_int( video_properties, "real_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_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( this->producer, frame, track );
+ }
+ else
+ {
+ fprintf( stderr, "tractor without a multitrack!!\n" );
+ mlt_service_get_frame( this->producer, frame, track );
}
// Prepare the next frame
void mlt_tractor_close( mlt_tractor this )
{
- mlt_producer_close( &this->parent );
- free( this );
+ if ( this != NULL && mlt_properties_dec_ref( mlt_tractor_properties( this ) ) <= 0 )
+ {
+ this->parent.close = NULL;
+ mlt_producer_close( &this->parent );
+ free( this );
+ }
}
projects / mlt / blobdiff