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1/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */2/*3 * audio.h - DEPRECATED MPEG-TS audio decoder API4 *5 * NOTE: should not be used on future drivers6 *7 * Copyright (C) 2000 Ralph Metzler <ralph@convergence.de>8 * & Marcus Metzler <marcus@convergence.de>9 * for convergence integrated media GmbH10 */11 12#ifndef _DVBAUDIO_H_13#define _DVBAUDIO_H_14 15#include <linux/types.h>16 17typedef 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 23typedef 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 30typedef enum {31 AUDIO_STEREO,32 AUDIO_MONO_LEFT,33 AUDIO_MONO_RIGHT,34 AUDIO_MONO,35 AUDIO_STEREO_SWAPPED36} audio_channel_select_t;37 38 39typedef 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 46typedef 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 159#define AUDIO_CAP_LPCM 260#define AUDIO_CAP_MP1 461#define AUDIO_CAP_MP2 862#define AUDIO_CAP_MP3 1663#define AUDIO_CAP_AAC 3264#define AUDIO_CAP_OGG 6465#define AUDIO_CAP_SDDS 12866#define AUDIO_CAP_AC3 25667 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_ */87