/*
 * mlt_consumer.h -- abstraction for all consumer services
 * 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
 */

#ifndef _MLT_CONSUMER_H_
#define _MLT_CONSUMER_H_

#include "mlt_service.h"
#include <pthread.h>

/** The interface definition for all consumers.
*/

struct mlt_consumer_s
{
	/* We're implementing service here */
	struct mlt_service_s parent;

	/* public virtual */
	int ( *start )( mlt_consumer );
	int ( *stop )( mlt_consumer );
	int ( *is_stopped )( mlt_consumer );
	void ( *close )( mlt_consumer );

	/* Private data */
	void *local;
	void *child;

	int real_time;
	int ahead;
	mlt_image_format format;
	mlt_deque queue;
	pthread_t ahead_thread;
	pthread_mutex_t mutex;
	pthread_cond_t cond;
	pthread_mutex_t put_mutex;
	pthread_cond_t put_cond;
	mlt_frame put;
	int put_active;
};

/** Public final methods
*/

#define MLT_CONSUMER_SERVICE( consumer )	( &( consumer )->parent )
#define MLT_CONSUMER_PROPERTIES( consumer )	MLT_SERVICE_PROPERTIES( MLT_CONSUMER_SERVICE( consumer ) )

extern int mlt_consumer_init( mlt_consumer self, void *child );
extern mlt_consumer mlt_consumer_new( );
extern mlt_service mlt_consumer_service( mlt_consumer self );
extern mlt_properties mlt_consumer_properties( mlt_consumer self );
extern int mlt_consumer_connect( mlt_consumer self, mlt_service producer );
extern int mlt_consumer_start( mlt_consumer self );
extern void mlt_consumer_purge( mlt_consumer self );
extern int mlt_consumer_put_frame( mlt_consumer self, mlt_frame frame );
extern mlt_frame mlt_consumer_get_frame( mlt_consumer self );
extern mlt_frame mlt_consumer_rt_frame( mlt_consumer self );
extern int mlt_consumer_stop( mlt_consumer self );
extern int mlt_consumer_is_stopped( mlt_consumer self );
extern void mlt_consumer_stopped( mlt_consumer self );
extern void mlt_consumer_close( mlt_consumer );
extern int mlt_consumer_profile( mlt_properties properties, char *profile );

#endif