| 1 | /* |
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| 2 | * audio.h |
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| 3 | * |
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| 4 | * Copyright (C) 2000 Ralph Metzler <ralph@convergence.de> |
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| 5 | * & Marcus Metzler <marcus@convergence.de> |
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| 6 | * for convergence integrated media GmbH |
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| 7 | * |
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| 8 | * This program is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU General Lesser Public License |
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| 10 | * as published by the Free Software Foundation; either version 2.1 |
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| 11 | * of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * This program is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 16 | * GNU General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU Lesser General Public License |
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| 19 | * along with this program; if not, write to the Free Software |
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| 20 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 21 | * |
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| 22 | */ |
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| 23 | |
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| 24 | #ifndef _DVBAUDIO_H_ |
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| 25 | #define _DVBAUDIO_H_ |
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| 26 | |
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| 27 | #include <stdint.h> |
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| 28 | |
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| 29 | |
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| 30 | typedef enum { |
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| 31 | AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */ |
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| 32 | AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */ |
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| 33 | } audio_stream_source_t; |
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| 34 | |
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| 35 | |
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| 36 | typedef enum { |
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| 37 | AUDIO_STOPPED, /* Device is stopped */ |
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| 38 | AUDIO_PLAYING, /* Device is currently playing */ |
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| 39 | AUDIO_PAUSED /* Device is paused */ |
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| 40 | } audio_play_state_t; |
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| 41 | |
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| 42 | |
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| 43 | typedef enum { |
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| 44 | AUDIO_STEREO, |
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| 45 | AUDIO_MONO_LEFT, |
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| 46 | AUDIO_MONO_RIGHT |
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| 47 | } audio_channel_select_t; |
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| 48 | |
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| 49 | |
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| 50 | typedef struct audio_mixer { |
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| 51 | unsigned int volume_left; |
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| 52 | unsigned int volume_right; |
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| 53 | // what else do we need? bass, pass-through, ... |
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| 54 | } audio_mixer_t; |
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| 55 | |
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| 56 | |
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| 57 | typedef struct audio_status { |
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| 58 | int AV_sync_state; /* sync audio and video? */ |
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| 59 | int mute_state; /* audio is muted */ |
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| 60 | audio_play_state_t play_state; /* current playback state */ |
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| 61 | audio_stream_source_t stream_source; /* current stream source */ |
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| 62 | audio_channel_select_t channel_select; /* currently selected channel */ |
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| 63 | int bypass_mode; /* pass on audio data to */ |
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| 64 | audio_mixer_t mixer_state; /* current mixer state */ |
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| 65 | } audio_status_t; /* separate decoder hardware */ |
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| 66 | |
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| 67 | |
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| 68 | typedef |
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| 69 | struct audio_karaoke{ /* if Vocal1 or Vocal2 are non-zero, they get mixed */ |
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| 70 | int vocal1; /* into left and right t at 70% each */ |
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| 71 | int vocal2; /* if both, Vocal1 and Vocal2 are non-zero, Vocal1 gets*/ |
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| 72 | int melody; /* mixed into the left channel and */ |
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| 73 | /* Vocal2 into the right channel at 100% each. */ |
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| 74 | /* if Melody is non-zero, the melody channel gets mixed*/ |
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| 75 | } audio_karaoke_t; /* into left and right */ |
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| 76 | |
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| 77 | |
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| 78 | typedef uint16_t audio_attributes_t; |
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| 79 | /* bits: descr. */ |
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| 80 | /* 15-13 audio coding mode (0=ac3, 2=mpeg1, 3=mpeg2ext, 4=LPCM, 6=DTS, */ |
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| 81 | /* 12 multichannel extension */ |
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| 82 | /* 11-10 audio type (0=not spec, 1=language included) */ |
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| 83 | /* 9- 8 audio application mode (0=not spec, 1=karaoke, 2=surround) */ |
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| 84 | /* 7- 6 Quantization / DRC (mpeg audio: 1=DRC exists)(lpcm: 0=16bit, */ |
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| 85 | /* 5- 4 Sample frequency fs (0=48kHz, 1=96kHz) */ |
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| 86 | /* 2- 0 number of audio channels (n+1 channels) */ |
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| 87 | |
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| 88 | |
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| 89 | /* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */ |
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| 90 | #define AUDIO_CAP_DTS 1 |
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| 91 | #define AUDIO_CAP_LPCM 2 |
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| 92 | #define AUDIO_CAP_MP1 4 |
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| 93 | #define AUDIO_CAP_MP2 8 |
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| 94 | #define AUDIO_CAP_MP3 16 |
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| 95 | #define AUDIO_CAP_AAC 32 |
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| 96 | #define AUDIO_CAP_OGG 64 |
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| 97 | #define AUDIO_CAP_SDDS 128 |
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| 98 | #define AUDIO_CAP_AC3 256 |
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| 99 | |
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| 100 | #define AUDIO_STOP _IO('o', 1) |
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| 101 | #define AUDIO_PLAY _IO('o', 2) |
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| 102 | #define AUDIO_PAUSE _IO('o', 3) |
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| 103 | #define AUDIO_CONTINUE _IO('o', 4) |
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| 104 | #define AUDIO_SELECT_SOURCE _IO('o', 5) |
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| 105 | #define AUDIO_SET_MUTE _IO('o', 6) |
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| 106 | #define AUDIO_SET_AV_SYNC _IO('o', 7) |
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| 107 | #define AUDIO_SET_BYPASS_MODE _IO('o', 8) |
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| 108 | #define AUDIO_CHANNEL_SELECT _IO('o', 9) |
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| 109 | #define AUDIO_GET_STATUS _IOR('o', 10, audio_status_t) |
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| 110 | |
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| 111 | #define AUDIO_GET_CAPABILITIES _IOR('o', 11, unsigned int) |
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| 112 | #define AUDIO_CLEAR_BUFFER _IO('o', 12) |
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| 113 | #define AUDIO_SET_ID _IO('o', 13) |
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| 114 | #define AUDIO_SET_MIXER _IOW('o', 14, audio_mixer_t) |
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| 115 | #define AUDIO_SET_STREAMTYPE _IO('o', 15) |
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| 116 | #define AUDIO_SET_EXT_ID _IO('o', 16) |
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| 117 | #define AUDIO_SET_ATTRIBUTES _IOW('o', 17, audio_attributes_t) |
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| 118 | #define AUDIO_SET_KARAOKE _IOW('o', 18, audio_karaoke_t) |
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| 119 | |
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| 120 | #endif /* _DVBAUDIO_H_ */ |
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