kernel/include/sound/audio.h

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2009  Tomas 'ZeXx86' Jedrzejek (zexx86@zexos.org)
   4  *
   5  *  This program is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19
  20 #ifndef _AUDIO_H
  21 #define _AUDIO_H
  22
  23 #include <dev.h>
  24
  25 #define SOUND_FORMAT_U8         1
  26 #define SOUND_FORMAT_S8         2
  27 #define SOUND_FORMAT_U16        3
  28 #define SOUND_FORMAT_S16        4
  29
  30 /* Device structure */
  31 typedef struct snd_audio_context {
  32         struct snd_audio_context *next, *prev;
  33
  34         dev_t *dev;
  35         unsigned short rate;
  36         unsigned char format;
  37         unsigned char channels;
  38         unsigned char flags;
  39         unsigned char state;
  40 } snd_audio_t;
  41
  42 /* Config */
  43 typedef struct {
  44         char *dev;
  45
  46         unsigned short rate;
  47         unsigned char format;
  48         unsigned char channels;
  49         unsigned char flags;
  50 } snd_cfg_t;
  51
  52 /* externs */
  53 extern unsigned int init_audio ();
  54 extern snd_audio_t *audio_open (snd_cfg_t *cfg);
  55 extern int audio_write (snd_audio_t *aud, char *buf, unsigned len);
  56 extern int audio_close (snd_audio_t *aud);
  57
  58 #endif