-/*
- * mlt_tractor.c -- tractor service class
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
+/**
+ * \file mlt_tractor.c
+ * \brief tractor service class
+ * \see mlt_tractor_s
*
- * 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) 2003-2009 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_tractor.h"
#include "mlt_frame.h"
#include "mlt_multitrack.h"
#include "mlt_field.h"
+#include "mlt_log.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
-/** Forward references to static methods.
+/* Forward references to static methods.
*/
-static int producer_get_frame( mlt_producer this, mlt_frame_ptr frame, int track );
+static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int track );
static void mlt_tractor_listener( mlt_multitrack tracks, mlt_tractor this );
-/** Constructor for the tractor.
-*/
+/** Construct a tractor without a field or multitrack.
+ *
+ * Sets the resource property to "<tractor>", the mlt_type to "mlt_producer",
+ * and mlt_service to "tractor".
+ *
+ * \public \memberof mlt_tractor_s
+ * \return the new tractor
+ */
mlt_tractor mlt_tractor_init( )
{
return this;
}
+/** Construct a tractor as well as a field and multitrack.
+ *
+ * Sets the resource property to "<tractor>", the mlt_type to "mlt_producer",
+ * and mlt_service to "tractor".
+ *
+ * \public \memberof mlt_tractor_s
+ * \return the new tractor
+ */
+
mlt_tractor mlt_tractor_new( )
{
mlt_tractor this = calloc( sizeof( struct mlt_tractor_s ), 1 );
}
/** Get the service object associated to the tractor.
-*/
+ *
+ * \public \memberof mlt_tractor_s
+ * \param this a tractor
+ * \return the parent service object
+ * \see MLT_TRACTOR_SERVICE
+ */
mlt_service mlt_tractor_service( mlt_tractor this )
{
}
/** Get the producer object associated to the tractor.
-*/
+ *
+ * \public \memberof mlt_tractor_s
+ * \param this a tractor
+ * \return the parent producer object
+ * \see MLT_TRACTOR_PRODUCER
+ */
mlt_producer mlt_tractor_producer( mlt_tractor this )
{
}
/** Get the properties object associated to the tractor.
-*/
+ *
+ * \public \memberof mlt_tractor_s
+ * \param this a tractor
+ * \return the tractor's property list
+ * \see MLT_TRACTOR_PROPERTIES
+ */
mlt_properties mlt_tractor_properties( mlt_tractor this )
{
}
/** Get the field this tractor is harvesting.
-*/
+ *
+ * \public \memberof mlt_tractor_s
+ * \param this a tractor
+ * \return a field or NULL if there is no field for this tractor
+ */
mlt_field mlt_tractor_field( mlt_tractor this )
{
}
/** Get the multitrack this tractor is pulling.
-*/
+ *
+ * \public \memberof mlt_tractor_s
+ * \param this a tractor
+ * \return a multitrack or NULL if there is none
+ */
mlt_multitrack mlt_tractor_multitrack( mlt_tractor this )
{
}
/** Ensure the tractors in/out points match the multitrack.
-*/
+ *
+ * \public \memberof mlt_tractor_s
+ * \param this a tractor
+ */
void mlt_tractor_refresh( mlt_tractor this )
{
}
/** Connect the tractor.
-*/
+ *
+ * \public \memberof mlt_tractor_s
+ * \param this a tractor
+ * \param producer a producer
+ * \return true on error
+ */
int mlt_tractor_connect( mlt_tractor this, mlt_service producer )
{
}
/** Set the producer for a specific track.
-*/
+ *
+ * \public \memberof mlt_tractor_s
+ * \param this a tractor
+ * \param producer a producer
+ * \param index the 0-based track index
+ * \return true on error
+ */
int mlt_tractor_set_track( mlt_tractor this, mlt_producer producer, int index )
{
}
/** Get the producer for a specific track.
-*/
+ *
+ * \public \memberof mlt_tractor_s
+ * \param this a tractor
+ * \param index the 0-based track index
+ * \return the producer for track \p index
+ */
mlt_producer mlt_tractor_get_track( mlt_tractor this, int index )
{
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" ) );
+ 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_double( properties, "consumer_deinterlace" ) );
+ 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_double( properties, "normalised_width" ) );
- mlt_properties_set_int( frame_properties, "normalised_height", mlt_properties_get_double( properties, "normalised_height" ) );
+ 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" ) );
}
/** Get the next frame.
-
- TODO: This function needs to be redesigned...
-*/
+ *
+ * \private \memberof mlt_tractor_s
+ * \param parent the producer interface to the tractor
+ * \param[out] frame a frame by reference
+ * \param track the 0-based track index
+ * \return true on error
+ */
static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int track )
{
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 );
// 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 we don't have one, we're in trouble...
if ( multitrack != NULL )
{
// Used to garbage collect all frames
// 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;
mlt_producer_set_speed( target, mlt_producer_get_speed( parent ) );
// We will create one frame and attach everything to it
- *frame = mlt_frame_init( );
+ *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( parent ) );
// Get the properties of the frame
frame_properties = MLT_FRAME_PROPERTIES( *frame );
done = mlt_properties_get_int( temp_properties, "last_track" );
// Handle fx only tracks
- if ( mlt_properties_get_int( temp_properties, "meta.fx_cut" ) )
+ if ( mlt_properties_get_int( temp_properties, "fx_cut" ) )
{
- mlt_properties copy = video == NULL ? frame_properties : MLT_FRAME_PROPERTIES( video );
- int i = 0;
-
- for ( i = 0; i < mlt_properties_count( temp_properties ); i ++ )
- {
- char *name = mlt_properties_get_name( temp_properties, i );
- char *value = mlt_properties_get_value( temp_properties, i );
- // For animated filters
- if ( isdigit( name[ 0 ] ) && value != NULL )
- mlt_properties_set( copy, name, value );
- }
-
- if ( video )
- {
- // Take all but the first placeholding producer and dump on to the image stack
- 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 );
- }
- else
- {
- mlt_frame_push_service( *frame, temp );
- mlt_frame_push_service( *frame, producer_get_image );
- mlt_properties_set_int( frame_properties, "meta.fx_cut", 1 );
- }
-
- if ( audio )
- {
- // Take all but the first placeholding producer and dump on to the audio stack
- void *p = !mlt_frame_is_test_audio( temp ) ? mlt_deque_pop_front( MLT_FRAME_AUDIO_STACK( temp ) ) : NULL;
- while ( ( p = mlt_deque_pop_front( MLT_FRAME_AUDIO_STACK( temp ) ) ) != NULL )
- mlt_deque_push_back( MLT_FRAME_AUDIO_STACK( audio ), p );
- }
- else
- {
- mlt_frame_push_audio( *frame, temp );
- mlt_frame_push_audio( *frame, producer_get_audio );
- mlt_properties_set_int( frame_properties, "meta.fx_cut", 1 );
- }
-
- // Ensure everything is hidden
- mlt_properties_set_int( temp_properties, "hide", 3 );
+ 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
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;
}
}
-
+
// Now stack callbacks
if ( audio != NULL )
{
if ( video != NULL )
{
- mlt_properties video_properties = MLT_FRAME_PROPERTIES( video );
+ 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_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
{
}
else
{
- fprintf( stderr, "tractor without a multitrack!!\n" );
+ mlt_log( MLT_PRODUCER_SERVICE( parent ), MLT_LOG_ERROR, "tractor without a multitrack!!\n" );
mlt_service_get_frame( this->producer, frame, track );
}
else
{
// Generate a test card
- *frame = mlt_frame_init( );
+ *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( parent ) );
return 0;
}
}
-/** Close the tractor.
-*/
+/** Close the tractor and free its resources.
+ *
+ * \public \memberof mlt_tractor_s
+ * \param this a tractor
+ */
void mlt_tractor_close( mlt_tractor this )
{
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