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Diffstat (limited to 'sys/sys/audioio.h')
| -rw-r--r-- | sys/sys/audioio.h | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/sys/sys/audioio.h b/sys/sys/audioio.h new file mode 100644 index 0000000..62a98e8 --- /dev/null +++ b/sys/sys/audioio.h @@ -0,0 +1,231 @@ +/* $OpenBSD: audioio.h,v 1.27 2016/09/14 06:12:20 ratchov Exp $ */ +/* $NetBSD: audioio.h,v 1.24 1998/08/13 06:28:41 mrg Exp $ */ + +/* + * Copyright (c) 1991-1993 Regents of the University of California. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the Computer Systems + * Engineering Group at Lawrence Berkeley Laboratory. + * 4. Neither the name of the University nor of the Laboratory may be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + +#ifndef _SYS_AUDIOIO_H_ +#define _SYS_AUDIOIO_H_ + +#define AUMODE_PLAY 0x01 +#define AUMODE_RECORD 0x02 + +#define AUDIO_INITPAR(p) \ + (void)memset((void *)(p), 0xff, sizeof(struct audio_swpar)) + +/* + * argument to AUDIO_SETPAR and AUDIO_GETPAR ioctls + */ +struct audio_swpar { + unsigned int sig; /* if 1, encoding is signed */ + unsigned int le; /* if 1, encoding is little-endian */ + unsigned int bits; /* bits per sample */ + unsigned int bps; /* bytes per sample */ + unsigned int msb; /* if 1, bits are msb-aligned */ + unsigned int rate; /* common play & rec sample rate */ + unsigned int pchan; /* play channels */ + unsigned int rchan; /* rec channels */ + unsigned int nblks; /* number of blocks in play buffer */ + unsigned int round; /* common frames per block */ + unsigned int _spare[6]; +}; + +/* + * argument to AUDIO_GETSTATUS + */ +struct audio_status { + int mode; + int pause; + int active; + int _spare[5]; +}; + +/* + * Parameter for the AUDIO_GETDEV ioctl to determine current + * audio devices. + */ +#define MAX_AUDIO_DEV_LEN 16 +typedef struct audio_device { + char name[MAX_AUDIO_DEV_LEN]; + char version[MAX_AUDIO_DEV_LEN]; + char config[MAX_AUDIO_DEV_LEN]; +} audio_device_t; + +struct audio_pos { + unsigned int play_pos; /* total bytes played */ + unsigned int play_xrun; /* bytes of silence inserted */ + unsigned int rec_pos; /* total bytes recorded */ + unsigned int rec_xrun; /* bytes dropped */ +}; + +/* + * Audio device operations + */ +#define AUDIO_GETDEV _IOR('A', 27, struct audio_device) +#define AUDIO_GETPOS _IOR('A', 35, struct audio_pos) +#define AUDIO_GETPAR _IOR('A', 36, struct audio_swpar) +#define AUDIO_SETPAR _IOWR('A', 37, struct audio_swpar) +#define AUDIO_START _IO('A', 38) +#define AUDIO_STOP _IO('A', 39) +#define AUDIO_GETSTATUS _IOR('A', 40, struct audio_status) + +/* + * Mixer device + */ +#define AUDIO_MIN_GAIN 0 +#define AUDIO_MAX_GAIN 255 + +typedef struct mixer_level { + int num_channels; + u_char level[8]; /* [num_channels] */ +} mixer_level_t; +#define AUDIO_MIXER_LEVEL_MONO 0 +#define AUDIO_MIXER_LEVEL_LEFT 0 +#define AUDIO_MIXER_LEVEL_RIGHT 1 + +/* + * Device operations + */ + +typedef struct audio_mixer_name { + char name[MAX_AUDIO_DEV_LEN]; + int msg_id; +} audio_mixer_name_t; + +typedef struct mixer_devinfo { + int index; + audio_mixer_name_t label; + int type; +#define AUDIO_MIXER_CLASS 0 +#define AUDIO_MIXER_ENUM 1 +#define AUDIO_MIXER_SET 2 +#define AUDIO_MIXER_VALUE 3 + int mixer_class; + int next, prev; +#define AUDIO_MIXER_LAST -1 + union { + struct audio_mixer_enum { + int num_mem; + struct { + audio_mixer_name_t label; + int ord; + } member[32]; + } e; + struct audio_mixer_set { + int num_mem; + struct { + audio_mixer_name_t label; + int mask; + } member[32]; + } s; + struct audio_mixer_value { + audio_mixer_name_t units; + int num_channels; + int delta; + } v; + } un; +} mixer_devinfo_t; + + +typedef struct mixer_ctrl { + int dev; + int type; + union { + int ord; /* enum */ + int mask; /* set */ + mixer_level_t value; /* value */ + } un; +} mixer_ctrl_t; + +/* + * Mixer operations + */ +#define AUDIO_MIXER_READ _IOWR('M', 0, mixer_ctrl_t) +#define AUDIO_MIXER_WRITE _IOWR('M', 1, mixer_ctrl_t) +#define AUDIO_MIXER_DEVINFO _IOWR('M', 2, mixer_devinfo_t) + +/* + * Well known device names + */ +#define AudioNmicrophone "mic" +#define AudioNline "line" +#define AudioNcd "cd" +#define AudioNdac "dac" +#define AudioNaux "aux" +#define AudioNrecord "record" +#define AudioNvolume "volume" +#define AudioNmonitor "monitor" +#define AudioNtreble "treble" +#define AudioNmid "mid" +#define AudioNbass "bass" +#define AudioNbassboost "bassboost" +#define AudioNspeaker "spkr" +#define AudioNheadphone "hp" +#define AudioNoutput "output" +#define AudioNinput "input" +#define AudioNmaster "master" +#define AudioNstereo "stereo" +#define AudioNmono "mono" +#define AudioNloudness "loudness" +#define AudioNspatial "spatial" +#define AudioNsurround "surround" +#define AudioNpseudo "pseudo" +#define AudioNmute "mute" +#define AudioNenhanced "enhanced" +#define AudioNpreamp "preamp" +#define AudioNon "on" +#define AudioNoff "off" +#define AudioNmode "mode" +#define AudioNsource "source" +#define AudioNfmsynth "fmsynth" +#define AudioNwave "wave" +#define AudioNmidi "midi" +#define AudioNmixerout "mixerout" +#define AudioNswap "swap" /* swap left and right channels */ +#define AudioNagc "agc" +#define AudioNdelay "delay" +#define AudioNselect "select" /* select destination */ +#define AudioNvideo "video" +#define AudioNcenter "center" +#define AudioNdepth "depth" +#define AudioNlfe "lfe" +#define AudioNextamp "extamp" + +#define AudioCinputs "inputs" +#define AudioCoutputs "outputs" +#define AudioCrecord "record" +#define AudioCmonitor "monitor" +#define AudioCequalization "equalization" + +#endif /* !_SYS_AUDIOIO_H_ */ |