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424 | giacomo | 1 | /* |
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 | |||
24 | #ifndef _DVBAUDIO_H_ |
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25 | #define _DVBAUDIO_H_ |
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26 | |||
27 | #ifdef __KERNEL__ |
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28 | #include <linux/types.h> |
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29 | #else |
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30 | #include <stdint.h> |
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31 | #endif |
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32 | |||
33 | |||
34 | typedef enum { |
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35 | AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */ |
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36 | AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */ |
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37 | } audio_stream_source_t; |
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38 | |||
39 | |||
40 | typedef enum { |
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41 | AUDIO_STOPPED, /* Device is stopped */ |
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42 | AUDIO_PLAYING, /* Device is currently playing */ |
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43 | AUDIO_PAUSED /* Device is paused */ |
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44 | } audio_play_state_t; |
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45 | |||
46 | |||
47 | typedef enum { |
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48 | AUDIO_STEREO, |
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49 | AUDIO_MONO_LEFT, |
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50 | AUDIO_MONO_RIGHT |
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51 | } audio_channel_select_t; |
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52 | |||
53 | |||
54 | typedef struct audio_mixer { |
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55 | unsigned int volume_left; |
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56 | unsigned int volume_right; |
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57 | // what else do we need? bass, pass-through, ... |
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58 | } audio_mixer_t; |
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59 | |||
60 | |||
61 | typedef struct audio_status { |
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62 | int AV_sync_state; /* sync audio and video? */ |
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63 | int mute_state; /* audio is muted */ |
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64 | audio_play_state_t play_state; /* current playback state */ |
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65 | audio_stream_source_t stream_source; /* current stream source */ |
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66 | audio_channel_select_t channel_select; /* currently selected channel */ |
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67 | int bypass_mode; /* pass on audio data to */ |
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68 | audio_mixer_t mixer_state; /* current mixer state */ |
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69 | } audio_status_t; /* separate decoder hardware */ |
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70 | |||
71 | |||
72 | typedef |
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73 | struct audio_karaoke{ /* if Vocal1 or Vocal2 are non-zero, they get mixed */ |
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74 | int vocal1; /* into left and right t at 70% each */ |
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75 | int vocal2; /* if both, Vocal1 and Vocal2 are non-zero, Vocal1 gets*/ |
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76 | int melody; /* mixed into the left channel and */ |
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77 | /* Vocal2 into the right channel at 100% each. */ |
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78 | /* if Melody is non-zero, the melody channel gets mixed*/ |
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79 | } audio_karaoke_t; /* into left and right */ |
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80 | |||
81 | |||
82 | typedef uint16_t audio_attributes_t; |
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83 | /* bits: descr. */ |
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84 | /* 15-13 audio coding mode (0=ac3, 2=mpeg1, 3=mpeg2ext, 4=LPCM, 6=DTS, */ |
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85 | /* 12 multichannel extension */ |
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86 | /* 11-10 audio type (0=not spec, 1=language included) */ |
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87 | /* 9- 8 audio application mode (0=not spec, 1=karaoke, 2=surround) */ |
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88 | /* 7- 6 Quantization / DRC (mpeg audio: 1=DRC exists)(lpcm: 0=16bit, */ |
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89 | /* 5- 4 Sample frequency fs (0=48kHz, 1=96kHz) */ |
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90 | /* 2- 0 number of audio channels (n+1 channels) */ |
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91 | |||
92 | |||
93 | /* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */ |
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94 | #define AUDIO_CAP_DTS 1 |
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95 | #define AUDIO_CAP_LPCM 2 |
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96 | #define AUDIO_CAP_MP1 4 |
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97 | #define AUDIO_CAP_MP2 8 |
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98 | #define AUDIO_CAP_MP3 16 |
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99 | #define AUDIO_CAP_AAC 32 |
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100 | #define AUDIO_CAP_OGG 64 |
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101 | #define AUDIO_CAP_SDDS 128 |
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102 | #define AUDIO_CAP_AC3 256 |
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103 | |||
104 | #define AUDIO_STOP _IO('o', 1) |
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105 | #define AUDIO_PLAY _IO('o', 2) |
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106 | #define AUDIO_PAUSE _IO('o', 3) |
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107 | #define AUDIO_CONTINUE _IO('o', 4) |
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108 | #define AUDIO_SELECT_SOURCE _IO('o', 5) |
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109 | #define AUDIO_SET_MUTE _IO('o', 6) |
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110 | #define AUDIO_SET_AV_SYNC _IO('o', 7) |
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111 | #define AUDIO_SET_BYPASS_MODE _IO('o', 8) |
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112 | #define AUDIO_CHANNEL_SELECT _IO('o', 9) |
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113 | #define AUDIO_GET_STATUS _IOR('o', 10, audio_status_t) |
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114 | |||
115 | #define AUDIO_GET_CAPABILITIES _IOR('o', 11, unsigned int) |
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116 | #define AUDIO_CLEAR_BUFFER _IO('o', 12) |
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117 | #define AUDIO_SET_ID _IO('o', 13) |
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118 | #define AUDIO_SET_MIXER _IOW('o', 14, audio_mixer_t) |
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119 | #define AUDIO_SET_STREAMTYPE _IO('o', 15) |
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120 | #define AUDIO_SET_EXT_ID _IO('o', 16) |
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121 | #define AUDIO_SET_ATTRIBUTES _IOW('o', 17, audio_attributes_t) |
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122 | #define AUDIO_SET_KARAOKE _IOW('o', 18, audio_karaoke_t) |
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123 | |||
124 | #endif /* _DVBAUDIO_H_ */ |
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125 |