-/*
- * mlt_multitrack.c -- multitrack service class
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
+/**
+ * \file mlt_multitrack.c
+ * \brief multitrack service class
*
- * 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.
+ * Copyright (C) 2003-2008 Ushodaya Enterprises Limited
+ * \author Charles Yates <charles.yates@pandora.be>
*
- * This program is distributed in the hope that it will be useful,
+ * 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 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_multitrack.h"
#include "mlt_playlist.h"
#include "mlt_frame.h"
#include <stdio.h>
#include <stdlib.h>
-struct mlt_track_s
-{
- mlt_producer producer;
- mlt_event event;
-};
-
-typedef struct mlt_track_s *mlt_track;
-
-/** Private definition.
-*/
-
-struct mlt_multitrack_s
-{
- // We're extending producer here
- struct mlt_producer_s parent;
- mlt_track *list;
- int size;
- int count;
-};
-
/** Forward reference.
*/
mlt_producer producer = &this->parent;
if ( mlt_producer_init( producer, this ) == 0 )
{
- mlt_properties properties = mlt_multitrack_properties( this );
+ mlt_properties properties = MLT_MULTITRACK_PROPERTIES( this );
producer->get_frame = producer_get_frame;
mlt_properties_set_data( properties, "multitrack", this, 0, NULL, NULL );
mlt_properties_set( properties, "log_id", "multitrack" );
mlt_properties_set( properties, "resource", "<multitrack>" );
+ mlt_properties_set_int( properties, "in", 0 );
+ mlt_properties_set_int( properties, "out", -1 );
+ mlt_properties_set_int( properties, "length", 0 );
+ producer->close = ( mlt_destructor )mlt_multitrack_close;
}
else
{
this = NULL;
}
}
-
+
return this;
}
mlt_service mlt_multitrack_service( mlt_multitrack this )
{
- return mlt_producer_service( mlt_multitrack_producer( this ) );
+ return MLT_MULTITRACK_SERVICE( this );
}
/** Get the properties associated this multitrack.
mlt_properties mlt_multitrack_properties( mlt_multitrack this )
{
- return mlt_service_properties( mlt_multitrack_service( this ) );
+ return MLT_MULTITRACK_PROPERTIES( this );
}
/** Initialise position related information.
int i = 0;
// Obtain the properties of this multitrack
- mlt_properties properties = mlt_multitrack_properties( this );
+ mlt_properties properties = MLT_MULTITRACK_PROPERTIES( this );
// We need to ensure that the multitrack reports the longest track as its length
mlt_position length = 0;
- // We need to ensure that fps are the same on all services
- double fps = 0;
-
// Obtain stats on all connected services
for ( i = 0; i < this->count; i ++ )
{
{
// If we have more than 1 track, we must be in continue mode
if ( this->count > 1 )
- mlt_properties_set( mlt_producer_properties( producer ), "eof", "continue" );
-
+ mlt_properties_set( MLT_PRODUCER_PROPERTIES( producer ), "eof", "continue" );
+
// Determine the longest length
- if ( !mlt_properties_get_int( mlt_producer_properties( producer ), "hide" ) )
+ //if ( !mlt_properties_get_int( MLT_PRODUCER_PROPERTIES( producer ), "hide" ) )
length = mlt_producer_get_playtime( producer ) > length ? mlt_producer_get_playtime( producer ) : length;
-
- // Handle fps
- if ( fps == 0 )
- {
- // This is the first producer, so it controls the fps
- fps = mlt_producer_get_fps( producer );
- }
- else if ( fps != mlt_producer_get_fps( producer ) )
- {
- // Generate a warning for now - the following attempt to fix may fail
- fprintf( stderr, "Warning: fps mismatch on track %d\n", i );
-
- // It should be safe to impose fps on an image producer, but not necessarily safe for video
- mlt_properties_set_double( mlt_producer_properties( producer ), "fps", fps );
- }
}
}
mlt_properties_set_position( properties, "length", length );
mlt_events_unblock( properties, properties );
mlt_properties_set_position( properties, "out", length - 1 );
- mlt_properties_set_double( properties, "fps", fps );
}
/** Listener for producers on the playlist.
int mlt_multitrack_connect( mlt_multitrack this, mlt_producer producer, int track )
{
// Connect to the producer to ourselves at the specified track
- int result = mlt_service_connect_producer( mlt_multitrack_service( this ), mlt_producer_service( producer ), track );
+ int result = mlt_service_connect_producer( MLT_MULTITRACK_SERVICE( this ), MLT_PRODUCER_SERVICE( producer ), track );
if ( result == 0 )
{
// Assign the track in our list here
this->list[ track ]->producer = producer;
- this->list[ track ]->event = mlt_events_listen( mlt_producer_properties( producer ), this,
+ this->list[ track ]->event = mlt_events_listen( MLT_PRODUCER_PROPERTIES( producer ), this,
"producer-changed", ( mlt_listener )mlt_multitrack_listener );
- mlt_properties_inc_ref( mlt_producer_properties( producer ) );
+ mlt_properties_inc_ref( MLT_PRODUCER_PROPERTIES( producer ) );
mlt_event_inc_ref( this->list[ track ]->event );
-
+
// Increment the track count if need be
if ( track >= this->count )
this->count = track + 1;
-
+
// Refresh our stats
mlt_multitrack_refresh( this );
}
int mlt_multitrack_count( mlt_multitrack this )
{
- return this->count;
+ return this->count;
}
/** Get an individual track as a producer.
mlt_producer mlt_multitrack_track( mlt_multitrack this, int track )
{
mlt_producer producer = NULL;
-
+
if ( this->list != NULL && track < this->count )
producer = this->list[ track ]->producer;
/** Determine the clip point.
- Special case here: a 'producer' has no concept of multiple clips - only the
- playlist and multitrack producers have clip functionality. Further to that a
- multitrack determines clip information from any connected tracks that happen
+ Special case here: a 'producer' has no concept of multiple clips - only the
+ playlist and multitrack producers have clip functionality. Further to that a
+ multitrack determines clip information from any connected tracks that happen
to be playlists.
Additionally, it must locate clips in the correct order, for example, consider
if ( producer != NULL )
{
// Get the properties of this producer
- mlt_properties properties = mlt_producer_properties( producer );
+ mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
// Determine if it's a playlist
mlt_playlist playlist = mlt_properties_get_data( properties, "playlist", NULL );
break;
case mlt_whence_relative_current:
- position = mlt_producer_position( mlt_multitrack_producer( this ) );
- for ( i = 0; i < count - 2; i ++ )
+ position = mlt_producer_position( MLT_MULTITRACK_PRODUCER( this ) );
+ for ( i = 0; i < count - 2; i ++ )
if ( position >= map[ i ] && position < map[ i + 1 ] )
break;
index += i;
Producer2 - multitrack - { filters/transitions } - tractor - consumer
Producer3 /
- The get_frame of a tractor pulls frames from it's connected service on all tracks and
- will terminate as soon as it receives a test card with a last_track property. The
+ The get_frame of a tractor pulls frames from it's connected service on all tracks and
+ will terminate as soon as it receives a test card with a last_track property. The
important case here is that the mulitrack does not move to the next frame until all
- tracks have been pulled.
+ tracks have been pulled.
Reasoning: In order to seek on a network such as above, the multitrack needs to ensure
that all producers are positioned on the same frame. It uses the 'last track' logic
out of sync.
See playlist logic too.
-
- This is not as clean as it should be...
*/
static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int index )
// Check if we have a track for this index
if ( index < this->count && this->list[ index ] != NULL )
{
- // Determine the in point
- int in = mlt_producer_is_cut( this->list[ index ]->producer ) ? mlt_producer_get_in( this->list[ index ]->producer ) : 0;
-
// Get the producer for this track
- mlt_producer producer = mlt_producer_cut_parent( this->list[ index ]->producer );
+ mlt_producer producer = this->list[ index ]->producer;
+
+ // Get the track hide property
+ int hide = mlt_properties_get_int( MLT_PRODUCER_PROPERTIES( mlt_producer_cut_parent( producer ) ), "hide" );
// Obtain the current position
mlt_position position = mlt_producer_frame( parent );
- // Get the clone index
- int clone_index = mlt_properties_get_int( mlt_producer_properties( this->list[ index ]->producer ), "_clone" );
+ // Get the parent properties
+ mlt_properties producer_properties = MLT_PRODUCER_PROPERTIES( parent );
- // Additionally, check if we're supposed to use a clone here
- if ( clone_index > 0 )
- {
- char key[ 25 ];
- sprintf( key, "_clone.%d", clone_index - 1 );
- producer = mlt_properties_get_data( mlt_producer_properties( producer ), key, NULL );
- }
+ // Get the speed
+ double speed = mlt_properties_get_double( producer_properties, "_speed" );
// Make sure we're at the same point
- mlt_producer_seek( producer, in + position );
+ mlt_producer_seek( producer, position );
// Get the frame from the producer
- mlt_service_get_frame( mlt_producer_service( producer ), frame, 0 );
+ mlt_service_get_frame( MLT_PRODUCER_SERVICE( producer ), frame, 0 );
// Indicate speed of this producer
- mlt_properties producer_properties = mlt_producer_properties( parent );
- double speed = mlt_properties_get_double( producer_properties, "_speed" );
- mlt_properties properties = mlt_frame_properties( *frame );
+ mlt_properties properties = MLT_FRAME_PROPERTIES( *frame );
mlt_properties_set_double( properties, "_speed", speed );
mlt_properties_set_position( properties, "_position", position );
- mlt_properties_set_int( properties, "hide", mlt_properties_get_int( mlt_producer_properties( producer ), "hide" ) );
+ mlt_properties_set_int( properties, "hide", hide );
}
else
{
// Generate a test frame
- *frame = mlt_frame_init( );
+ *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( parent ) );
// Update position on the frame we're creating
mlt_frame_set_position( *frame, mlt_producer_position( parent ) );
if ( index >= this->count )
{
// Let tractor know if we've reached the end
- mlt_properties_set_int( mlt_frame_properties( *frame ), "last_track", 1 );
+ mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame ), "last_track", 1 );
// Move to the next frame
mlt_producer_prepare_next( parent );
void mlt_multitrack_close( mlt_multitrack this )
{
- if ( this != NULL && mlt_properties_dec_ref( mlt_multitrack_properties( this ) ) <= 0 )
+ if ( this != NULL && mlt_properties_dec_ref( MLT_MULTITRACK_PROPERTIES( this ) ) <= 0 )
{
int i = 0;
for ( i = 0; i < this->count; i ++ )
}
// Close the producer
+ this->parent.close = NULL;
mlt_producer_close( &this->parent );
// Free the list