You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
mlt/src/framework/mlt_service.h

70 lines
2.5 KiB

/*
* mlt_service.h -- interface for all service classes
* 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_SERVICE_H_
#define _MLT_SERVICE_H_
#include "mlt_properties.h"
/** The interface definition for all services.
*/
struct mlt_service_s
{
/* We're extending properties here */
struct mlt_properties_s parent;
/* Protected virtual */
int ( *get_frame )( mlt_service self, mlt_frame_ptr frame, int index );
mlt_destructor close;
void *close_object;
/* Private data */
void *local;
void *child;
};
/** The public API.
*/
#define MLT_SERVICE_PROPERTIES( service ) ( &( service )->parent )
extern int mlt_service_init( mlt_service self, void *child );
extern void mlt_service_lock( mlt_service self );
extern void mlt_service_unlock( mlt_service self );
extern mlt_service_type mlt_service_identify( mlt_service self );
extern int mlt_service_connect_producer( mlt_service self, mlt_service producer, int index );
extern int mlt_service_get_frame( mlt_service self, mlt_frame_ptr frame, int index );
extern mlt_properties mlt_service_properties( mlt_service self );
extern mlt_service mlt_service_consumer( mlt_service self );
extern mlt_service mlt_service_producer( mlt_service self );
extern int mlt_service_attach( mlt_service self, mlt_filter filter );
extern int mlt_service_detach( mlt_service self, mlt_filter filter );
extern void mlt_service_apply_filters( mlt_service self, mlt_frame frame, int index );
extern mlt_filter mlt_service_filter( mlt_service self, int index );
extern void mlt_service_close( mlt_service self );
/* I'm not sure about self one - leaving it out of docs for now (only used in consumer_westley) */
extern mlt_service mlt_service_get_producer( mlt_service self );
#endif