vorbis-tools-1.2.0/ogg123/audio.h

   1 /********************************************************************
   2  *                                                                  *
   3  * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
   4  * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
   5  * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE.    *
   6  * PLEASE READ THESE TERMS BEFORE DISTRIBUTING.                     *
   7  *                                                                  *
   8  * THE Ogg123 SOURCE CODE IS (C) COPYRIGHT 2000-2001                *
   9  * by Stan Seibert <volsung@xiph.org> AND OTHER CONTRIBUTORS        *
  10  * http://www.xiph.org/                                             *
  11  *                                                                  *
  12  ********************************************************************
  13
  14  last mod: $Id: audio.h,v 1.2 2001/12/19 02:52:53 volsung Exp $
  15
  16 ********************************************************************/
  17
  18 /* ogg123's audio playback functions */
  19
  20 #ifndef __AUDIO_H__
  21 #define __AUDIO_H__
  22
  23 #include <ao/ao.h>
  24
  25
  26 typedef struct audio_format_t {
  27   int big_endian;
  28   int word_size;
  29   int signed_sample;
  30   int rate;
  31   int channels;
  32 } audio_format_t;
  33
  34
  35 /* For facilitating output to multiple devices */
  36 typedef struct audio_device_t {
  37   int driver_id;
  38   ao_device *device;
  39   ao_option *options;
  40   char *filename;
  41   struct audio_device_t *next_device;
  42 } audio_device_t;
  43
  44
  45 int audio_format_equal (audio_format_t *a, audio_format_t *b);
  46 audio_device_t *append_audio_device(audio_device_t *devices_list,
  47                                      int driver_id,
  48                                      ao_option *options, char *filename);
  49 void audio_devices_print_info(audio_device_t *d);
  50 int audio_devices_write(audio_device_t *d, void *ptr, int nbytes);
  51 int add_ao_option(ao_option **op_h, const char *optstring);
  52 void close_audio_devices (audio_device_t *devices);
  53 void free_audio_devices (audio_device_t *devices);
  54 void ao_onexit (void *arg);
  55
  56 #endif /* __AUDIO_H__ */