Annotation of sys/sys/audioio.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: audioio.h,v 1.16 2005/12/14 13:59:04 fgsch Exp $ */
! 2: /* $NetBSD: audioio.h,v 1.24 1998/08/13 06:28:41 mrg Exp $ */
! 3:
! 4: /*
! 5: * Copyright (c) 1991-1993 Regents of the University of California.
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. All advertising materials mentioning features or use of this software
! 17: * must display the following acknowledgement:
! 18: * This product includes software developed by the Computer Systems
! 19: * Engineering Group at Lawrence Berkeley Laboratory.
! 20: * 4. Neither the name of the University nor of the Laboratory may be used
! 21: * to endorse or promote products derived from this software without
! 22: * specific prior written permission.
! 23: *
! 24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 34: * SUCH DAMAGE.
! 35: *
! 36: */
! 37:
! 38: #ifndef _SYS_AUDIOIO_H_
! 39: #define _SYS_AUDIOIO_H_
! 40:
! 41: /*
! 42: * Audio device
! 43: */
! 44: struct audio_prinfo {
! 45: u_int sample_rate; /* sample rate in bit/s */
! 46: u_int channels; /* number of channels, usually 1 or 2 */
! 47: u_int precision; /* number of bits/sample */
! 48: u_int encoding; /* data encoding (AUDIO_ENCODING_* below) */
! 49: u_int gain; /* volume level */
! 50: u_int port; /* selected I/O port */
! 51: u_int seek; /* BSD extension */
! 52: u_int avail_ports; /* available I/O ports */
! 53: u_int buffer_size; /* total size audio buffer */
! 54: u_int _ispare[1];
! 55: /* Current state of device: */
! 56: u_int samples; /* number of samples */
! 57: u_int eof; /* End Of File (zero-size writes) counter */
! 58: u_char pause; /* non-zero if paused, zero to resume */
! 59: u_char error; /* non-zero if underflow/overflow occurred */
! 60: u_char waiting; /* non-zero if another process hangs in open */
! 61: u_char balance; /* stereo channel balance */
! 62: u_char cspare[2];
! 63: u_char open; /* non-zero if currently open */
! 64: u_char active; /* non-zero if I/O is currently active */
! 65: };
! 66: typedef struct audio_prinfo audio_prinfo_t;
! 67:
! 68: struct audio_info {
! 69: struct audio_prinfo play; /* Info for play (output) side */
! 70: struct audio_prinfo record; /* Info for record (input) side */
! 71:
! 72: u_int monitor_gain; /* input to output mix */
! 73: /* BSD extensions */
! 74: u_int blocksize; /* H/W read/write block size */
! 75: u_int hiwat; /* output high water mark */
! 76: u_int lowat; /* output low water mark */
! 77: u_int _ispare1;
! 78: u_int mode; /* current device mode */
! 79: #define AUMODE_PLAY 0x01
! 80: #define AUMODE_RECORD 0x02
! 81: #define AUMODE_PLAY_ALL 0x04 /* don't do real-time correction */
! 82: };
! 83: typedef struct audio_info audio_info_t;
! 84:
! 85: #define AUDIO_INITINFO(p) \
! 86: (void)memset((void *)(p), 0xff, sizeof(struct audio_info))
! 87:
! 88: /*
! 89: * Parameter for the AUDIO_GETDEV ioctl to determine current
! 90: * audio devices.
! 91: */
! 92: #define MAX_AUDIO_DEV_LEN 16
! 93: typedef struct audio_device {
! 94: char name[MAX_AUDIO_DEV_LEN];
! 95: char version[MAX_AUDIO_DEV_LEN];
! 96: char config[MAX_AUDIO_DEV_LEN];
! 97: } audio_device_t;
! 98:
! 99: typedef struct audio_offset {
! 100: u_int samples; /* Total number of bytes transferred */
! 101: u_int deltablks; /* Blocks transferred since last checked */
! 102: u_int offset; /* Physical transfer offset in buffer */
! 103: } audio_offset_t;
! 104:
! 105: /*
! 106: * Supported audio encodings
! 107: */
! 108: /* Encoding ID's */
! 109: #define AUDIO_ENCODING_NONE 0 /* no encoding assigned */
! 110: #define AUDIO_ENCODING_ULAW 1 /* ITU G.711 mu-law */
! 111: #define AUDIO_ENCODING_ALAW 2 /* ITU G.711 A-law */
! 112: #define AUDIO_ENCODING_PCM16 3 /* signed linear PCM, obsolete */
! 113: #define AUDIO_ENCODING_LINEAR AUDIO_ENCODING_PCM16 /* SunOS compat */
! 114: #define AUDIO_ENCODING_PCM8 4 /* unsigned linear PCM, obsolete */
! 115: #define AUDIO_ENCODING_LINEAR8 AUDIO_ENCODING_PCM8 /* SunOS compat */
! 116: #define AUDIO_ENCODING_ADPCM 5 /* adaptive differential PCM */
! 117: #define AUDIO_ENCODING_SLINEAR_LE 6
! 118: #define AUDIO_ENCODING_SLINEAR_BE 7
! 119: #define AUDIO_ENCODING_ULINEAR_LE 8
! 120: #define AUDIO_ENCODING_ULINEAR_BE 9
! 121: #define AUDIO_ENCODING_SLINEAR 10
! 122: #define AUDIO_ENCODING_ULINEAR 11
! 123: #define AUDIO_ENCODING_MPEG_L1_STREAM 12
! 124: #define AUDIO_ENCODING_MPEG_L1_PACKETS 13
! 125: #define AUDIO_ENCODING_MPEG_L1_SYSTEM 14
! 126: #define AUDIO_ENCODING_MPEG_L2_STREAM 15
! 127: #define AUDIO_ENCODING_MPEG_L2_PACKETS 16
! 128: #define AUDIO_ENCODING_MPEG_L2_SYSTEM 17
! 129: #define AUDIO_ENCODING_MPEG_L3_STREAM 18
! 130: #define AUDIO_ENCODING_MPEG_L3_PACKETS 19
! 131: #define AUDIO_ENCODING_MPEG_L3_SYSTEM 20
! 132:
! 133: typedef struct audio_encoding {
! 134: int index;
! 135: char name[MAX_AUDIO_DEV_LEN];
! 136: int encoding;
! 137: int precision;
! 138: int flags;
! 139: #define AUDIO_ENCODINGFLAG_EMULATED 1 /* software emulation mode */
! 140: } audio_encoding_t;
! 141:
! 142: /*
! 143: * Balance settings.
! 144: */
! 145: #define AUDIO_LEFT_BALANCE 0 /* left channel only */
! 146: #define AUDIO_MID_BALANCE 32 /* equal left/right channel */
! 147: #define AUDIO_RIGHT_BALANCE 64 /* right channel only */
! 148: #define AUDIO_BALANCE_SHIFT 3
! 149:
! 150: /*
! 151: * Output ports
! 152: */
! 153: #define AUDIO_SPEAKER 0x01 /* built-in speaker */
! 154: #define AUDIO_HEADPHONE 0x02 /* headphone jack */
! 155: #define AUDIO_LINE_OUT 0x04 /* line out */
! 156:
! 157: /*
! 158: * Input ports
! 159: */
! 160: #define AUDIO_MICROPHONE 0x01 /* microphone */
! 161: #define AUDIO_LINE_IN 0x02 /* line in */
! 162: #define AUDIO_CD 0x04 /* on-board CD inputs */
! 163: #define AUDIO_INTERNAL_CD_IN AUDIO_CD /* internal CDROM */
! 164:
! 165: /*
! 166: * Audio device operations
! 167: */
! 168: #define AUDIO_GETINFO _IOR('A', 21, struct audio_info)
! 169: #define AUDIO_SETINFO _IOWR('A', 22, struct audio_info)
! 170: #define AUDIO_DRAIN _IO('A', 23)
! 171: #define AUDIO_FLUSH _IO('A', 24)
! 172: #define AUDIO_WSEEK _IOR('A', 25, u_long)
! 173: #define AUDIO_RERROR _IOR('A', 26, int)
! 174: #define AUDIO_GETDEV _IOR('A', 27, struct audio_device)
! 175: #define AUDIO_GETENC _IOWR('A', 28, struct audio_encoding)
! 176: #define AUDIO_GETFD _IOR('A', 29, int)
! 177: #define AUDIO_SETFD _IOWR('A', 30, int)
! 178: #define AUDIO_PERROR _IOR('A', 31, int)
! 179: #define AUDIO_GETIOFFS _IOR('A', 32, struct audio_offset)
! 180: #define AUDIO_GETOOFFS _IOR('A', 33, struct audio_offset)
! 181: #define AUDIO_GETPROPS _IOR('A', 34, int)
! 182: #define AUDIO_PROP_FULLDUPLEX 0x01
! 183: #define AUDIO_PROP_MMAP 0x02
! 184: #define AUDIO_PROP_INDEPENDENT 0x04
! 185:
! 186: /*
! 187: * Mixer device
! 188: */
! 189: #define AUDIO_MIN_GAIN 0
! 190: #define AUDIO_MAX_GAIN 255
! 191:
! 192: typedef struct mixer_level {
! 193: int num_channels;
! 194: u_char level[8]; /* [num_channels] */
! 195: } mixer_level_t;
! 196: #define AUDIO_MIXER_LEVEL_MONO 0
! 197: #define AUDIO_MIXER_LEVEL_LEFT 0
! 198: #define AUDIO_MIXER_LEVEL_RIGHT 1
! 199:
! 200: /*
! 201: * Device operations
! 202: */
! 203:
! 204: typedef struct audio_mixer_name {
! 205: char name[MAX_AUDIO_DEV_LEN];
! 206: int msg_id;
! 207: } audio_mixer_name_t;
! 208:
! 209: typedef struct mixer_devinfo {
! 210: int index;
! 211: audio_mixer_name_t label;
! 212: int type;
! 213: #define AUDIO_MIXER_CLASS 0
! 214: #define AUDIO_MIXER_ENUM 1
! 215: #define AUDIO_MIXER_SET 2
! 216: #define AUDIO_MIXER_VALUE 3
! 217: int mixer_class;
! 218: int next, prev;
! 219: #define AUDIO_MIXER_LAST -1
! 220: union {
! 221: struct audio_mixer_enum {
! 222: int num_mem;
! 223: struct {
! 224: audio_mixer_name_t label;
! 225: int ord;
! 226: } member[32];
! 227: } e;
! 228: struct audio_mixer_set {
! 229: int num_mem;
! 230: struct {
! 231: audio_mixer_name_t label;
! 232: int mask;
! 233: } member[32];
! 234: } s;
! 235: struct audio_mixer_value {
! 236: audio_mixer_name_t units;
! 237: int num_channels;
! 238: int delta;
! 239: } v;
! 240: } un;
! 241: } mixer_devinfo_t;
! 242:
! 243:
! 244: typedef struct mixer_ctrl {
! 245: int dev;
! 246: int type;
! 247: union {
! 248: int ord; /* enum */
! 249: int mask; /* set */
! 250: mixer_level_t value; /* value */
! 251: } un;
! 252: } mixer_ctrl_t;
! 253:
! 254: /*
! 255: * Mixer operations
! 256: */
! 257: #define AUDIO_MIXER_READ _IOWR('M', 0, mixer_ctrl_t)
! 258: #define AUDIO_MIXER_WRITE _IOWR('M', 1, mixer_ctrl_t)
! 259: #define AUDIO_MIXER_DEVINFO _IOWR('M', 2, mixer_devinfo_t)
! 260:
! 261: /*
! 262: * Well known device names
! 263: */
! 264: #define AudioNmicrophone "mic"
! 265: #define AudioNline "line"
! 266: #define AudioNcd "cd"
! 267: #define AudioNdac "dac"
! 268: #define AudioNaux "aux"
! 269: #define AudioNrecord "record"
! 270: #define AudioNvolume "volume"
! 271: #define AudioNmonitor "monitor"
! 272: #define AudioNtreble "treble"
! 273: #define AudioNmid "mid"
! 274: #define AudioNbass "bass"
! 275: #define AudioNbassboost "bassboost"
! 276: #define AudioNspeaker "speaker"
! 277: #define AudioNheadphone "headphones"
! 278: #define AudioNoutput "output"
! 279: #define AudioNinput "input"
! 280: #define AudioNmaster "master"
! 281: #define AudioNstereo "stereo"
! 282: #define AudioNmono "mono"
! 283: #define AudioNloudness "loudness"
! 284: #define AudioNspatial "spatial"
! 285: #define AudioNsurround "surround"
! 286: #define AudioNpseudo "pseudo"
! 287: #define AudioNmute "mute"
! 288: #define AudioNenhanced "enhanced"
! 289: #define AudioNpreamp "preamp"
! 290: #define AudioNon "on"
! 291: #define AudioNoff "off"
! 292: #define AudioNmode "mode"
! 293: #define AudioNsource "source"
! 294: #define AudioNfmsynth "fmsynth"
! 295: #define AudioNwave "wave"
! 296: #define AudioNmidi "midi"
! 297: #define AudioNmixerout "mixerout"
! 298: #define AudioNswap "swap" /* swap left and right channels */
! 299: #define AudioNagc "agc"
! 300: #define AudioNdelay "delay"
! 301: #define AudioNselect "select" /* select destination */
! 302: #define AudioNvideo "video"
! 303: #define AudioNcenter "center"
! 304: #define AudioNdepth "depth"
! 305: #define AudioNlfe "lfe"
! 306: #define AudioNextamp "extamp"
! 307:
! 308: #define AudioEmulaw "mulaw"
! 309: #define AudioEalaw "alaw"
! 310: #define AudioEadpcm "adpcm"
! 311: #define AudioEslinear "slinear"
! 312: #define AudioEslinear_le "slinear_le"
! 313: #define AudioEslinear_be "slinear_be"
! 314: #define AudioEulinear "ulinear"
! 315: #define AudioEulinear_le "ulinear_le"
! 316: #define AudioEulinear_be "ulinear_be"
! 317: #define AudioEmpeg_l1_stream "mpeg_l1_stream"
! 318: #define AudioEmpeg_l1_packets "mpeg_l1_packets"
! 319: #define AudioEmpeg_l1_system "mpeg_l1_system"
! 320: #define AudioEmpeg_l2_stream "mpeg_l2_stream"
! 321: #define AudioEmpeg_l2_packets "mpeg_l2_packets"
! 322: #define AudioEmpeg_l2_system "mpeg_l2_system"
! 323:
! 324: #define AudioCinputs "inputs"
! 325: #define AudioCoutputs "outputs"
! 326: #define AudioCrecord "record"
! 327: #define AudioCmonitor "monitor"
! 328: #define AudioCequalization "equalization"
! 329:
! 330: #endif /* !_SYS_AUDIOIO_H_ */
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