include/minix/sound.h

   1 /* Definitions used by /dev/audio and /dev/mixer.
   2  *
   3  *  Feb 13 1995                 Author: Michel R. Prevenier
   4  */
   5
   6 #ifndef SOUND_H
   7 #define SOUND_H
   8
   9 /* ------- Mixer stuff ------- */
  10
  11 /* Available devices */
  12 enum Device
  13 {
  14   Master,     /* Master volume */
  15   Dac,        /* DSP, digitized sound */
  16   Fm,         /* Fm synthesized sound */
  17   Cd,         /* Compact */
  18   Line,       /* Line in */
  19   Mic,        /* Microphone */
  20   Speaker,    /* Pc speaker */
  21   Treble,     /* Treble */
  22   Bass        /* Bass */
  23 };
  24
  25 enum InputState
  26 {
  27   ON, OFF
  28 };
  29
  30 /* Volume levels range from 0 to 31, bass & treble range from 0 to 15 */
  31 struct volume_level
  32 {
  33   enum Device   device;
  34   int           left;
  35   int           right;
  36 };
  37
  38 struct inout_ctrl
  39 {
  40   enum Device           device;
  41   enum InputState       left;
  42   enum InputState       right;
  43 };
  44
  45 #endif /* SOUND_H */