include/uapi/linux/dvb/audio.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
   2 /*
   3  * audio.h - DEPRECATED MPEG-TS audio decoder API
   4  *
   5  * NOTE: should not be used on future drivers
   6  *
   7  * Copyright (C) 2000 Ralph  Metzler <ralph@convergence.de>
   8  *                  & Marcus Metzler <marcus@convergence.de>
   9  *                    for convergence integrated media GmbH
  10  */
  11
  12 #ifndef _DVBAUDIO_H_
  13 #define _DVBAUDIO_H_
  14
  15 #include <linux/types.h>
  16
  17 typedef enum {
  18         AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */
  19         AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */
  20 } audio_stream_source_t;
  21
  22
  23 typedef enum {
  24         AUDIO_STOPPED,      /* Device is stopped */
  25         AUDIO_PLAYING,      /* Device is currently playing */
  26         AUDIO_PAUSED        /* Device is paused */
  27 } audio_play_state_t;
  28
  29
  30 typedef enum {
  31         AUDIO_STEREO,
  32         AUDIO_MONO_LEFT,
  33         AUDIO_MONO_RIGHT,
  34         AUDIO_MONO,
  35         AUDIO_STEREO_SWAPPED
  36 } audio_channel_select_t;
  37
  38
  39 typedef struct audio_mixer {
  40         unsigned int volume_left;
  41         unsigned int volume_right;
  42   /* what else do we need? bass, pass-through, ... */
  43 } audio_mixer_t;
  44
  45
  46 typedef struct audio_status {
  47         int                    AV_sync_state;  /* sync audio and video? */
  48         int                    mute_state;     /* audio is muted */
  49         audio_play_state_t     play_state;     /* current playback state */
  50         audio_stream_source_t  stream_source;  /* current stream source */
  51         audio_channel_select_t channel_select; /* currently selected channel */
  52         int                    bypass_mode;    /* pass on audio data to */
  53         audio_mixer_t          mixer_state;    /* current mixer state */
  54 } audio_status_t;                              /* separate decoder hardware */
  55
  56
  57 /* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */
  58 #define AUDIO_CAP_DTS    1
  59 #define AUDIO_CAP_LPCM   2
  60 #define AUDIO_CAP_MP1    4
  61 #define AUDIO_CAP_MP2    8
  62 #define AUDIO_CAP_MP3   16
  63 #define AUDIO_CAP_AAC   32
  64 #define AUDIO_CAP_OGG   64
  65 #define AUDIO_CAP_SDDS 128
  66 #define AUDIO_CAP_AC3  256
  67
  68 #define AUDIO_STOP                 _IO('o', 1)
  69 #define AUDIO_PLAY                 _IO('o', 2)
  70 #define AUDIO_PAUSE                _IO('o', 3)
  71 #define AUDIO_CONTINUE             _IO('o', 4)
  72 #define AUDIO_SELECT_SOURCE        _IO('o', 5)
  73 #define AUDIO_SET_MUTE             _IO('o', 6)
  74 #define AUDIO_SET_AV_SYNC          _IO('o', 7)
  75 #define AUDIO_SET_BYPASS_MODE      _IO('o', 8)
  76 #define AUDIO_CHANNEL_SELECT       _IO('o', 9)
  77 #define AUDIO_GET_STATUS           _IOR('o', 10, audio_status_t)
  78
  79 #define AUDIO_GET_CAPABILITIES     _IOR('o', 11, unsigned int)
  80 #define AUDIO_CLEAR_BUFFER         _IO('o',  12)
  81 #define AUDIO_SET_ID               _IO('o', 13)
  82 #define AUDIO_SET_MIXER            _IOW('o', 14, audio_mixer_t)
  83 #define AUDIO_SET_STREAMTYPE       _IO('o', 15)
  84 #define AUDIO_BILINGUAL_CHANNEL_SELECT _IO('o', 20)
  85
  86 #endif /* _DVBAUDIO_H_ */