libmpcodecs/ad.h

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #ifndef MPLAYER_AD_H
  20 #define MPLAYER_AD_H
  21
  22 #include "mpc_info.h"
  23 #include "libmpdemux/stheader.h"
  24
  25 typedef struct mp_codec_info ad_info_t;
  26
  27 /* interface of video decoder drivers */
  28 typedef struct ad_functions
  29 {
  30     const ad_info_t *info;
  31     int (*preinit)(sh_audio_t *sh);
  32     int (*init)(sh_audio_t *sh);
  33     void (*uninit)(sh_audio_t *sh);
  34     int (*control)(sh_audio_t *sh,int cmd,void* arg, ...);
  35     int (*decode_audio)(sh_audio_t *sh, unsigned char *buffer, int minlen,
  36                         int maxlen);
  37 } ad_functions_t;
  38
  39 // NULL terminated array of all drivers
  40 extern const ad_functions_t * const mpcodecs_ad_drivers[];
  41
  42 // fallback if ADCTRL_RESYNC not implemented: sh_audio->a_in_buffer_len=0;
  43 #define ADCTRL_RESYNC_STREAM 1   // resync, called after seeking
  44
  45 // fallback if ADCTRL_SKIP not implemented: ds_fill_buffer(sh_audio->ds);
  46 #define ADCTRL_SKIP_FRAME 2      // skip block/frame, called while seeking
  47
  48 // fallback if ADCTRL_QUERY_FORMAT not implemented: sh_audio->sample_format
  49 #define ADCTRL_QUERY_FORMAT 3    // test for availabilty of a format
  50
  51 // fallback: use hw mixer in libao
  52 #define ADCTRL_SET_VOLUME 4      // not used at the moment
  53
  54 #endif /* MPLAYER_AD_H */