/*
 * factory.c -- the factory method interfaces
 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
 * Author: Charles Yates <charles.yates@pandora.be>
 *
 * 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
 * Lesser General Public License for more details.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <string.h>
#include <pthread.h>

#include <framework/mlt_factory.h>
#include "producer_avformat.h"
#include "consumer_avformat.h"
#include "filter_avcolour_space.h"
#include "filter_avdeinterlace.h"
#include "filter_avresample.h"

// ffmpeg Header files
#include <avformat.h>

// A static flag used to determine if avformat has been initialised
static int avformat_initialised = 0;

// A locking mutex
static pthread_mutex_t avformat_mutex;

#if 0
// These 3 functions should override the alloc functions in libavformat
// but some formats or codecs seem to crash when used (wmv in particular)

void *av_malloc( unsigned int size )
{
	return mlt_pool_alloc( size );
}

void *av_realloc( void *ptr, unsigned int size )
{
	return mlt_pool_realloc( ptr, size );
}

void av_free( void *ptr )
{
	return mlt_pool_release( ptr );
}
#endif

void avformat_destroy( void *ignore )
{
	// Clean up
	// av_free_static( ); -XXX this is deprecated

	// Destroy the mutex
	pthread_mutex_destroy( &avformat_mutex );
}

void avformat_lock( )
{
	// Lock the mutex now
	pthread_mutex_lock( &avformat_mutex );
}

void avformat_unlock( )
{
	// Unlock the mutex now
	pthread_mutex_unlock( &avformat_mutex );
}

static void avformat_init( )
{
	// Initialise avformat if necessary
	if ( avformat_initialised == 0 )
	{
		avformat_initialised = 1;
		pthread_mutex_init( &avformat_mutex, NULL );
		av_register_all( );
		mlt_factory_register_for_clean_up( NULL, avformat_destroy );
		av_log_set_level( -1 );
	}
}

void *mlt_create_producer( char *id, void *arg )
{
	avformat_init( );
	if ( !strcmp( id, "avformat" ) )
		return producer_avformat_init( arg );
	return NULL;
}

void *mlt_create_filter( char *id, void *arg )
{
	avformat_init( );
	if ( !strcmp( id, "avcolour_space" ) )
		return filter_avcolour_space_init( arg );
#ifdef USE_MMX
	if ( !strcmp( id, "avdeinterlace" ) )
		return filter_avdeinterlace_init( arg );
#endif
	if ( !strcmp( id, "avresample" ) )
		return filter_avresample_init( arg );
	return NULL;
}

void *mlt_create_transition( char *id, void *arg )
{
	return NULL;
}

void *mlt_create_consumer( char *id, void *arg )
{
	avformat_init( );
	if ( !strcmp( id, "avformat" ) )
		return consumer_avformat_init( arg );
	return NULL;
}