linux/dvb/audio.h

0001 /* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
0002 /*
0003  * audio.h - DEPRECATED MPEG-TS audio decoder API
0004  *
0005  * NOTE: should not be used on future drivers
0006  *
0007  * Copyright (C) 2000 Ralph  Metzler <ralph@convergence.de>
0008  *                  & Marcus Metzler <marcus@convergence.de>
0009  *                    for convergence integrated media GmbH
0010  *
0011  * This program is free software; you can redistribute it and/or
0012  * modify it under the terms of the GNU General Lesser Public License
0013  * as published by the Free Software Foundation; either version 2.1
0014  * of the License, or (at your option) any later version.
0015  *
0016  * This program is distributed in the hope that it will be useful,
0017  * but WITHOUT ANY WARRANTY; without even the implied warranty of
0018  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
0019  * GNU General Public License for more details.
0020  *
0021  * You should have received a copy of the GNU Lesser General Public License
0022  * along with this program; if not, write to the Free Software
0023  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
0024  *
0025  */
0026
0027 #ifndef _DVBAUDIO_H_
0028 #define _DVBAUDIO_H_
0029
0030 #include <linux/types.h>
0031
0032 typedef enum {
0033     AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */
0034     AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */
0035 } audio_stream_source_t;
0036
0037
0038 typedef enum {
0039     AUDIO_STOPPED,      /* Device is stopped */
0040     AUDIO_PLAYING,      /* Device is currently playing */
0041     AUDIO_PAUSED        /* Device is paused */
0042 } audio_play_state_t;
0043
0044
0045 typedef enum {
0046     AUDIO_STEREO,
0047     AUDIO_MONO_LEFT,
0048     AUDIO_MONO_RIGHT,
0049     AUDIO_MONO,
0050     AUDIO_STEREO_SWAPPED
0051 } audio_channel_select_t;
0052
0053
0054 typedef struct audio_mixer {
0055     unsigned int volume_left;
0056     unsigned int volume_right;
0057   /* what else do we need? bass, pass-through, ... */
0058 } audio_mixer_t;
0059
0060
0061 typedef struct audio_status {
0062     int                    AV_sync_state;  /* sync audio and video? */
0063     int                    mute_state;     /* audio is muted */
0064     audio_play_state_t     play_state;     /* current playback state */
0065     audio_stream_source_t  stream_source;  /* current stream source */
0066     audio_channel_select_t channel_select; /* currently selected channel */
0067     int                    bypass_mode;    /* pass on audio data to */
0068     audio_mixer_t          mixer_state;    /* current mixer state */
0069 } audio_status_t;                              /* separate decoder hardware */
0070
0071
0072 /* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */
0073 #define AUDIO_CAP_DTS    1
0074 #define AUDIO_CAP_LPCM   2
0075 #define AUDIO_CAP_MP1    4
0076 #define AUDIO_CAP_MP2    8
0077 #define AUDIO_CAP_MP3   16
0078 #define AUDIO_CAP_AAC   32
0079 #define AUDIO_CAP_OGG   64
0080 #define AUDIO_CAP_SDDS 128
0081 #define AUDIO_CAP_AC3  256
0082
0083 #define AUDIO_STOP                 _IO('o', 1)
0084 #define AUDIO_PLAY                 _IO('o', 2)
0085 #define AUDIO_PAUSE                _IO('o', 3)
0086 #define AUDIO_CONTINUE             _IO('o', 4)
0087 #define AUDIO_SELECT_SOURCE        _IO('o', 5)
0088 #define AUDIO_SET_MUTE             _IO('o', 6)
0089 #define AUDIO_SET_AV_SYNC          _IO('o', 7)
0090 #define AUDIO_SET_BYPASS_MODE      _IO('o', 8)
0091 #define AUDIO_CHANNEL_SELECT       _IO('o', 9)
0092 #define AUDIO_GET_STATUS           _IOR('o', 10, audio_status_t)
0093
0094 #define AUDIO_GET_CAPABILITIES     _IOR('o', 11, unsigned int)
0095 #define AUDIO_CLEAR_BUFFER         _IO('o',  12)
0096 #define AUDIO_SET_ID               _IO('o', 13)
0097 #define AUDIO_SET_MIXER            _IOW('o', 14, audio_mixer_t)
0098 #define AUDIO_SET_STREAMTYPE       _IO('o', 15)
0099 #define AUDIO_BILINGUAL_CHANNEL_SELECT _IO('o', 20)
0100
0101 #endif /* _DVBAUDIO_H_ */