| /* |
| * audio.h |
| * |
| * Copyright (C) 2000 Ralph Metzler <ralph@convergence.de> |
| * & Marcus Metzler <marcus@convergence.de> |
| * for convergence integrated media GmbH |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Lesser Public License |
| * as published by the Free Software Foundation; either version 2.1 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| * |
| */ |
| |
| #ifndef _DVBAUDIO_H_ |
| #define _DVBAUDIO_H_ |
| |
| #include <linux/types.h> |
| |
| typedef enum { |
| AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */ |
| AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */ |
| } audio_stream_source_t; |
| |
| |
| typedef enum { |
| AUDIO_STOPPED, /* Device is stopped */ |
| AUDIO_PLAYING, /* Device is currently playing */ |
| AUDIO_PAUSED /* Device is paused */ |
| } audio_play_state_t; |
| |
| |
| typedef enum { |
| AUDIO_STEREO, |
| AUDIO_MONO_LEFT, |
| AUDIO_MONO_RIGHT, |
| AUDIO_MONO, |
| AUDIO_STEREO_SWAPPED |
| } audio_channel_select_t; |
| |
| |
| typedef struct audio_mixer { |
| unsigned int volume_left; |
| unsigned int volume_right; |
| // what else do we need? bass, pass-through, ... |
| } audio_mixer_t; |
| |
| |
| typedef struct audio_status { |
| int AV_sync_state; /* sync audio and video? */ |
| int mute_state; /* audio is muted */ |
| audio_play_state_t play_state; /* current playback state */ |
| audio_stream_source_t stream_source; /* current stream source */ |
| audio_channel_select_t channel_select; /* currently selected channel */ |
| int bypass_mode; /* pass on audio data to */ |
| audio_mixer_t mixer_state; /* current mixer state */ |
| } audio_status_t; /* separate decoder hardware */ |
| |
| |
| typedef |
| struct audio_karaoke { /* if Vocal1 or Vocal2 are non-zero, they get mixed */ |
| int vocal1; /* into left and right t at 70% each */ |
| int vocal2; /* if both, Vocal1 and Vocal2 are non-zero, Vocal1 gets*/ |
| int melody; /* mixed into the left channel and */ |
| /* Vocal2 into the right channel at 100% each. */ |
| /* if Melody is non-zero, the melody channel gets mixed*/ |
| } audio_karaoke_t; /* into left and right */ |
| |
| |
| typedef __u16 audio_attributes_t; |
| /* bits: descr. */ |
| /* 15-13 audio coding mode (0=ac3, 2=mpeg1, 3=mpeg2ext, 4=LPCM, 6=DTS, */ |
| /* 12 multichannel extension */ |
| /* 11-10 audio type (0=not spec, 1=language included) */ |
| /* 9- 8 audio application mode (0=not spec, 1=karaoke, 2=surround) */ |
| /* 7- 6 Quantization / DRC (mpeg audio: 1=DRC exists)(lpcm: 0=16bit, */ |
| /* 5- 4 Sample frequency fs (0=48kHz, 1=96kHz) */ |
| /* 2- 0 number of audio channels (n+1 channels) */ |
| |
| |
| /* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */ |
| #define AUDIO_CAP_DTS 1 |
| #define AUDIO_CAP_LPCM 2 |
| #define AUDIO_CAP_MP1 4 |
| #define AUDIO_CAP_MP2 8 |
| #define AUDIO_CAP_MP3 16 |
| #define AUDIO_CAP_AAC 32 |
| #define AUDIO_CAP_OGG 64 |
| #define AUDIO_CAP_SDDS 128 |
| #define AUDIO_CAP_AC3 256 |
| |
| #define AUDIO_STOP _IO('o', 1) |
| #define AUDIO_PLAY _IO('o', 2) |
| #define AUDIO_PAUSE _IO('o', 3) |
| #define AUDIO_CONTINUE _IO('o', 4) |
| #define AUDIO_SELECT_SOURCE _IO('o', 5) |
| #define AUDIO_SET_MUTE _IO('o', 6) |
| #define AUDIO_SET_AV_SYNC _IO('o', 7) |
| #define AUDIO_SET_BYPASS_MODE _IO('o', 8) |
| #define AUDIO_CHANNEL_SELECT _IO('o', 9) |
| #define AUDIO_GET_STATUS _IOR('o', 10, audio_status_t) |
| |
| #define AUDIO_GET_CAPABILITIES _IOR('o', 11, unsigned int) |
| #define AUDIO_CLEAR_BUFFER _IO('o', 12) |
| #define AUDIO_SET_ID _IO('o', 13) |
| #define AUDIO_SET_MIXER _IOW('o', 14, audio_mixer_t) |
| #define AUDIO_SET_STREAMTYPE _IO('o', 15) |
| #define AUDIO_SET_EXT_ID _IO('o', 16) |
| #define AUDIO_SET_ATTRIBUTES _IOW('o', 17, audio_attributes_t) |
| #define AUDIO_SET_KARAOKE _IOW('o', 18, audio_karaoke_t) |
| |
| /** |
| * AUDIO_GET_PTS |
| * |
| * Read the 33 bit presentation time stamp as defined |
| * in ITU T-REC-H.222.0 / ISO/IEC 13818-1. |
| * |
| * The PTS should belong to the currently played |
| * frame if possible, but may also be a value close to it |
| * like the PTS of the last decoded frame or the last PTS |
| * extracted by the PES parser. |
| */ |
| #define AUDIO_GET_PTS _IOR('o', 19, __u64) |
| #define AUDIO_BILINGUAL_CHANNEL_SELECT _IO('o', 20) |
| |
| #endif /* _DVBAUDIO_H_ */ |
