/* * 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_#ifdef __KERNEL__#include <linux/types.h>#else#include <stdint.h>#endiftypedef 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_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 */typedefstruct 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 uint16_t 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)#endif /* _DVBAUDIO_H_ */