* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
* Author: Charles Yates <charles.yates@pandora.be>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This program is distributed in the hope that it will be useful,
+ * This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include "mlt_tractor.h"
#include "mlt_frame.h"
#include "mlt_multitrack.h"
+#include "mlt_field.h"
#include <stdio.h>
#include <stdlib.h>
-
-/** Private structure.
-*/
-
-struct mlt_tractor_s
-{
- struct mlt_producer_s parent;
- mlt_service producer;
-};
+#include <string.h>
+#include <ctype.h>
/** Forward references to static methods.
*/
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 properties = MLT_PRODUCER_PROPERTIES( producer );
+
+ mlt_properties_set( properties, "resource", "<tractor>" );
+ mlt_properties_set( properties, "mlt_type", "mlt_producer" );
+ mlt_properties_set( properties, "mlt_service", "tractor" );
+ mlt_properties_set_int( properties, "in", 0 );
+ mlt_properties_set_int( properties, "out", -1 );
+ mlt_properties_set_int( properties, "length", 0 );
+
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_service mlt_tractor_service( mlt_tractor this )
{
- return mlt_producer_service( &this->parent );
+ return MLT_PRODUCER_SERVICE( &this->parent );
}
/** Get the producer object associated to the tractor.
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.
mlt_properties mlt_tractor_properties( mlt_tractor this )
{
- return mlt_producer_properties( &this->parent );
+ 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.
int mlt_tractor_connect( mlt_tractor this, mlt_service producer )
{
- int ret = mlt_service_connect_producer( mlt_tractor_service( this ), producer, 0 );
+ int ret = mlt_service_connect_producer( MLT_TRACTOR_SERVICE( this ), producer, 0 );
// This is the producer we're going to connect to
if ( ret == 0 )
return ret;
}
+/** Set the producer for a specific track.
+*/
+
+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( frame_properties, "rescale.interp", mlt_properties_get( properties, "rescale.interp" ) );
+ mlt_properties_set_int( frame_properties, "resize_alpha", mlt_properties_get_int( properties, "resize_alpha" ) );
+ mlt_properties_set_int( frame_properties, "distort", mlt_properties_get_int( 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_int( properties, "consumer_deinterlace" ) );
+ mlt_properties_set( frame_properties, "deinterlace_method", mlt_properties_get( properties, "deinterlace_method" ) );
+ mlt_properties_set_int( frame_properties, "normalised_width", mlt_properties_get_int( properties, "normalised_width" ) );
+ mlt_properties_set_int( frame_properties, "normalised_height", mlt_properties_get_int( 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_int( properties, "format", *format );
+ 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" ) );
+ mlt_properties_set_int( properties, "distort", mlt_properties_get_int( 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;
+}
+
+static void destroy_data_queue( void *arg )
+{
+ if ( arg != NULL )
+ {
+ // Assign the correct type
+ mlt_deque queue = arg;
+
+ // Iterate through each item and destroy them
+ while ( mlt_deque_peek_front( queue ) != NULL )
+ mlt_properties_close( mlt_deque_pop_back( queue ) );
+
+ // Close the deque
+ mlt_deque_close( queue );
+ }
+}
+
/** Get the next frame.
- TODO: This should be reading a pump being populated by the thread...
+ TODO: This function needs to be redesigned...
*/
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 = NULL;
+ int count = 0;
+ int image_count = 0;
// Get the properties of the parent producer
- mlt_properties properties = mlt_producer_properties( parent );
+ 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 );
+
+ // 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( );
+
+ // 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 )
{
- mlt_producer target = mlt_multitrack_producer( multitrack );
+ // 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 ) );
- 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( MLT_PRODUCER_SERVICE( parent ) );
- // 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" );
+
+ // 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;
+
+ // Ensure that all frames know the aspect ratio of the background
+ mlt_properties_set_double( temp_properties, "output_ratio",
+ mlt_properties_get_double( MLT_FRAME_PROPERTIES( first_video ), "aspect_ratio" ) );
+
+ mlt_properties_set_int( MLT_FRAME_PROPERTIES( temp ), "image_count", ++ image_count );
+ image_count = 1;
+ }
}
- else if ( ( !mlt_frame_is_test_card( temp ) || !mlt_frame_is_test_audio( temp ) ) &&
- mlt_producer_frame( parent ) == mlt_properties_get_position( mlt_frame_properties( temp ), "position" ) )
+
+ // Now stack callbacks
+ if ( audio != NULL )
{
- *frame = temp;
- looking = 0;
+ mlt_frame_push_audio( *frame, audio );
+ mlt_frame_push_audio( *frame, producer_get_audio );
}
- else if ( ( !mlt_frame_is_test_card( temp ) || !mlt_frame_is_test_audio( temp ) ) && looking )
+
+ if ( video != NULL )
{
- // This is the one we want and we can stop looking
- *frame = temp;
- looking = 0;
+ 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_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_properties_set_int( frame_properties, "image_count", image_count );
}
else
{
- // We discard all other frames
- mlt_frame_close( temp );
+ 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 );
+ mlt_properties_set_data( MLT_FRAME_PROPERTIES( *frame ), "consumer_lock_service", this, 0, NULL, 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
else
{
// Generate a test card
- *frame = mlt_frame_init( );
+ *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( parent ) );
return 0;
}
}
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