research.m1stereo.tv/gitweb/ - melted/blob - src/framework/mlt_playlist.c

   1 /*
   2  * mlt_playlist.c -- playlist service class
   3  * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
   4  * Author: Charles Yates <charles.yates@pandora.be>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program 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
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include "config.h"
  22
  23 #include "mlt_playlist.h"
  24
  25 /** Private definition.
  26 */
  27
  28 struct mlt_playlist_s
  29 {
  30         struct mlt_producer_s parent;
  31         int count;
  32         int track;
  33 };
  34
  35 /** Constructor.
  36
  37         TODO: Override and implement all transport related method.
  38         TODO: Override and implement a time code normalising service get_frame
  39 */
  40
  41 mlt_playlist mlt_playlist_init( )
  42 {
  43         mlt_playlist this = calloc( sizeof( struct mlt_playlist_s ), 1 );
  44         if ( this != NULL )
  45         {
  46                 mlt_producer producer = &this->parent;
  47                 if ( mlt_producer_init( producer, this ) != 0 )
  48                 {
  49                         free( this );
  50                         this = NULL;
  51                 }
  52         }
  53
  54         return this;
  55 }
  56
  57 /** Get the producer associated to this playlist.
  58 */
  59
  60 mlt_producer mlt_playlist_producer( mlt_playlist this )
  61 {
  62         return &this->parent;
  63 }
  64
  65 /** Get the service associated to this playlist.
  66 */
  67
  68 mlt_service mlt_playlist_service( mlt_playlist this )
  69 {
  70         return mlt_producer_service( &this->parent );
  71 }
  72
  73 /** Append a producer to the playlist.
  74
  75         TODO: Implement
  76         TODO: Extract length information from the producer.
  77 */
  78
  79 int mlt_playlist_append( mlt_playlist this, mlt_producer producer )
  80 {
  81         return 0;
  82 }
  83
  84 /** Append a blank to the playlist of a given length.
  85
  86         TODO: Implement
  87 */
  88
  89 int mlt_playlist_blank( mlt_playlist this, mlt_timecode length )
  90 {
  91         return 0;
  92 }
  93
  94 /** Close the playlist.
  95 */
  96
  97 mlt_playlist_close( mlt_playlist this )
  98 {
  99         mlt_producer_close( &this->parent );
 100         free( this );
 101 }