audio.h (2812B) - Raw
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_ */