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 * This program is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU General Lesser Public License 13 * as published by the Free Software Foundation; either version 2.1 14 * of the License, or (at your option) any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU Lesser General Public License 22 * along with this program; if not, write to the Free Software 23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 24 * 25 */ 26 27 #ifndef _DVBAUDIO_H_ 28 #define _DVBAUDIO_H_ 29 30 #include <linux/types.h> 31 32 typedef enum { 33 AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */ 34 AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */ 35 } audio_stream_source_t; 36 37 38 typedef enum { 39 AUDIO_STOPPED, /* Device is stopped */ 40 AUDIO_PLAYING, /* Device is currently playing */ 41 AUDIO_PAUSED /* Device is paused */ 42 } audio_play_state_t; 43 44 45 typedef enum { 46 AUDIO_STEREO, 47 AUDIO_MONO_LEFT, 48 AUDIO_MONO_RIGHT, 49 AUDIO_MONO, 50 AUDIO_STEREO_SWAPPED 51 } audio_channel_select_t; 52 53 54 typedef struct audio_mixer { 55 unsigned int volume_left; 56 unsigned int volume_right; 57 /* what else do we need? bass, pass-through, ... */ 58 } audio_mixer_t; 59 60 61 typedef struct audio_status { 62 int AV_sync_state; /* sync audio and video? */ 63 int mute_state; /* audio is muted */ 64 audio_play_state_t play_state; /* current playback state */ 65 audio_stream_source_t stream_source; /* current stream source */ 66 audio_channel_select_t channel_select; /* currently selected channel */ 67 int bypass_mode; /* pass on audio data to */ 68 audio_mixer_t mixer_state; /* current mixer state */ 69 } audio_status_t; /* separate decoder hardware */ 70 71 72 /* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */ 73 #define AUDIO_CAP_DTS 1 74 #define AUDIO_CAP_LPCM 2 75 #define AUDIO_CAP_MP1 4 76 #define AUDIO_CAP_MP2 8 77 #define AUDIO_CAP_MP3 16 78 #define AUDIO_CAP_AAC 32 79 #define AUDIO_CAP_OGG 64 80 #define AUDIO_CAP_SDDS 128 81 #define AUDIO_CAP_AC3 256 82 83 #define AUDIO_STOP _IO('o', 1) 84 #define AUDIO_PLAY _IO('o', 2) 85 #define AUDIO_PAUSE _IO('o', 3) 86 #define AUDIO_CONTINUE _IO('o', 4) 87 #define AUDIO_SELECT_SOURCE _IO('o', 5) 88 #define AUDIO_SET_MUTE _IO('o', 6) 89 #define AUDIO_SET_AV_SYNC _IO('o', 7) 90 #define AUDIO_SET_BYPASS_MODE _IO('o', 8) 91 #define AUDIO_CHANNEL_SELECT _IO('o', 9) 92 #define AUDIO_GET_STATUS _IOR('o', 10, audio_status_t) 93 94 #define AUDIO_GET_CAPABILITIES _IOR('o', 11, unsigned int) 95 #define AUDIO_CLEAR_BUFFER _IO('o', 12) 96 #define AUDIO_SET_ID _IO('o', 13) 97 #define AUDIO_SET_MIXER _IOW('o', 14, audio_mixer_t) 98 #define AUDIO_SET_STREAMTYPE _IO('o', 15) 99 #define AUDIO_BILINGUAL_CHANNEL_SELECT _IO('o', 20) 100 101 #endif /* _DVBAUDIO_H_ */ 102