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audio.h
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/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */ /* * audio.h - DEPRECATED MPEG-TS audio decoder API * * NOTE: should not be used on future drivers * * Copyright (C) 2000 Ralph Metzler <ralph@convergence.de> * & Marcus Metzler <marcus@convergence.de> * for convergence integrated media GmbH */ #ifndef _DVBAUDIO_H_ #define _DVBAUDIO_H_ #include <linux/types.h> typedef enum { AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */ AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */ } audio_stream_source_t; typedef enum { AUDIO_STOPPED, /* Device is stopped */ AUDIO_PLAYING, /* Device is currently playing */ AUDIO_PAUSED /* Device is paused */ } audio_play_state_t; typedef enum { AUDIO_STEREO, AUDIO_MONO_LEFT, AUDIO_MONO_RIGHT, AUDIO_MONO, AUDIO_STEREO_SWAPPED } audio_channel_select_t; typedef struct audio_mixer { unsigned int volume_left; unsigned int volume_right; /* what else do we need? bass, pass-through, ... */ } audio_mixer_t; typedef struct audio_status { int AV_sync_state; /* sync audio and video? */ int mute_state; /* audio is muted */ audio_play_state_t play_state; /* current playback state */ audio_stream_source_t stream_source; /* current stream source */ audio_channel_select_t channel_select; /* currently selected channel */ int bypass_mode; /* pass on audio data to */ audio_mixer_t mixer_state; /* current mixer state */ } audio_status_t; /* separate decoder hardware */ /* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */ #define AUDIO_CAP_DTS 1 #define AUDIO_CAP_LPCM 2 #define AUDIO_CAP_MP1 4 #define AUDIO_CAP_MP2 8 #define AUDIO_CAP_MP3 16 #define AUDIO_CAP_AAC 32 #define AUDIO_CAP_OGG 64 #define AUDIO_CAP_SDDS 128 #define AUDIO_CAP_AC3 256 #define AUDIO_STOP _IO('o', 1) #define AUDIO_PLAY _IO('o', 2) #define AUDIO_PAUSE _IO('o', 3) #define AUDIO_CONTINUE _IO('o', 4) #define AUDIO_SELECT_SOURCE _IO('o', 5) #define AUDIO_SET_MUTE _IO('o', 6) #define AUDIO_SET_AV_SYNC _IO('o', 7) #define AUDIO_SET_BYPASS_MODE _IO('o', 8) #define AUDIO_CHANNEL_SELECT _IO('o', 9) #define AUDIO_GET_STATUS _IOR('o', 10, audio_status_t) #define AUDIO_GET_CAPABILITIES _IOR('o', 11, unsigned int) #define AUDIO_CLEAR_BUFFER _IO('o', 12) #define AUDIO_SET_ID _IO('o', 13) #define AUDIO_SET_MIXER _IOW('o', 14, audio_mixer_t) #define AUDIO_SET_STREAMTYPE _IO('o', 15) #define AUDIO_BILINGUAL_CHANNEL_SELECT _IO('o', 20) #endif /* _DVBAUDIO_H_ */