research.m1stereo.tv/gitweb/ - melted/blob - src/framework/mlt_multitrack.h

   1 /*
   2  * mlt_multitrack.h -- multitrack service class
   3  * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #ifndef _MLT_MULITRACK_H_
  22 #define _MLT_MULITRACK_H_
  23
  24 #include "mlt_producer.h"
  25
  26 /** Private definition.
  27 */
  28
  29 struct mlt_track_s
  30 {
  31         mlt_producer producer;
  32         mlt_event event;
  33 };
  34
  35 typedef struct mlt_track_s *mlt_track;
  36
  37 struct mlt_multitrack_s
  38 {
  39         /* We're extending producer here */
  40         struct mlt_producer_s parent;
  41         mlt_track *list;
  42         int size;
  43         int count;
  44 };
  45
  46 /** Public final methods
  47 */
  48
  49 #define MLT_MULTITRACK_PRODUCER( multitrack )   ( &( multitrack )->parent )
  50 #define MLT_MULTITRACK_SERVICE( multitrack )    MLT_PRODUCER_SERVICE( MLT_MULTITRACK_PRODUCER( multitrack ) )
  51 #define MLT_MULTITRACK_PROPERTIES( multitrack ) MLT_SERVICE_PROPERTIES( MLT_MULTITRACK_SERVICE( multitrack ) )
  52
  53 extern mlt_multitrack mlt_multitrack_init( );
  54 extern mlt_producer mlt_multitrack_producer( mlt_multitrack self );
  55 extern mlt_service mlt_multitrack_service( mlt_multitrack self );
  56 extern mlt_properties mlt_multitrack_properties( mlt_multitrack self );
  57 extern int mlt_multitrack_connect( mlt_multitrack self, mlt_producer producer, int track );
  58 extern mlt_position mlt_multitrack_clip( mlt_multitrack self, mlt_whence whence, int index );
  59 extern void mlt_multitrack_close( mlt_multitrack self );
  60 extern int mlt_multitrack_count( mlt_multitrack self );
  61 extern void mlt_multitrack_refresh( mlt_multitrack self );
  62 extern mlt_producer mlt_multitrack_track( mlt_multitrack self, int track );
  63
  64 #endif
  65