1 /* $NetBSD: libaudio.h,v 1.22 2024/03/08 06:57:59 mrg Exp $ */ 2 3 /* 4 * Copyright (c) 1999, 2009, 2013, 2015, 2019, 2024 Matthew R. Green 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /* 30 * audio formats 31 */ 32 #define AUDIO_FORMAT_DEFAULT -1 33 #define AUDIO_FORMAT_NONE 1 34 #define AUDIO_FORMAT_SUN 2 35 #define AUDIO_FORMAT_WAV 3 36 37 int audio_format_from_str (char *); 38 39 /* 40 * Audio encoding formats; this is a additional to those set 41 * in sys/audioio.h, but with a large offset to avoid future 42 * conflicts (additional ones are libaudio-software only.) 43 * 44 * This is to support floating-point WAV files. These require 45 * software conversion to a supported format. 46 */ 47 #define AUDIO_ENCODING_LIBAUDIO_FLOAT32 1001 /* 32-bit IEEE FP. */ 48 #define AUDIO_ENCODING_LIBAUDIO_FLOAT64 1002 /* 64-bit IEEE FP. */ 49 50 /* 51 * We copy the Sun/NeXT on-disk audio header format and document what 52 * we know of it here. 53 * 54 * The header size appears to be an offset to where the data really 55 * begins, rather than defining the real length of the audio header. 56 * The Sun/NeXT audio format seems to only use 24 bytes of data (with 57 * an additional 8 bytes of nuls written, padding it to 32 bytes). 58 * 59 * If the size of the audio data is unknown (eg, reading from a pipe) 60 * the Sun demo audio tools place AUDIO_UNKNOWN_SIZE in the 61 * `data_size' member. 62 * 63 * For stereo data, the channels appear to be interleaved with the 64 * left channel first. For more channels, who knows? 65 */ 66 67 /* 68 * This is the Sun/NeXT audio file magic value. Note that it 69 * is also `.snd' in ASCII. 70 */ 71 #define AUDIO_FILE_MAGIC ((u_int32_t)0x2e736e64) 72 #define AUDIO_UNKNOWN_SIZE ((unsigned)(~0)) 73 74 typedef struct { 75 u_int32_t magic; 76 u_int32_t hdr_size; /* header size; in bytes */ 77 u_int32_t data_size; /* optional; in bytes */ 78 u_int32_t encoding; /* see below */ 79 u_int32_t sample_rate; /* per second */ 80 u_int32_t channels; /* number of interleaved channels */ 81 } sun_audioheader; 82 83 #define Audio_filehdr sun_audioheader /* SunOS compat(?) */ 84 85 /* 86 * these are the types of "encoding" for above. taken from the 87 * SunOS <multimedia/audio_filehdr.h>. 88 */ 89 #define AUDIO_FILE_ENCODING_MULAW_8 1 90 #define AUDIO_FILE_ENCODING_LINEAR_8 2 91 #define AUDIO_FILE_ENCODING_LINEAR_16 3 92 #define AUDIO_FILE_ENCODING_LINEAR_24 4 93 #define AUDIO_FILE_ENCODING_LINEAR_32 5 94 #define AUDIO_FILE_ENCODING_FLOAT 6 95 #define AUDIO_FILE_ENCODING_DOUBLE 7 96 #define AUDIO_FILE_ENCODING_ADPCM_G721 23 97 #define AUDIO_FILE_ENCODING_ADPCM_G722 24 98 #define AUDIO_FILE_ENCODING_ADPCM_G723_3 25 99 #define AUDIO_FILE_ENCODING_ADPCM_G723_5 26 100 #define AUDIO_FILE_ENCODING_ALAW_8 27 101 102 const char *audio_enc_from_val (int); 103 int audio_enc_to_val (const char *); 104 105 int audio_sun_to_encoding (int, u_int *, u_int *); 106 int audio_encoding_to_sun (int, int, int *); 107 108 /* 109 * RIFF WAVE files. Sources: RFC 2361, and various Microsoft docs 110 * https://learn.microsoft.com/en-us/windows/win32/xaudio2/resource-interchange-file-format--riff- 111 * https://learn.microsoft.com/en-us/previous-versions/windows/hardware/design/dn653308(v=vs.85) 112 * "Multimedia Programming Interface and Data Specifications 1.0" chapter 4 113 */ 114 115 /* 116 * This is the WAV audio file magic value. Note that it 117 * is also `RIFF' and `WAVE' in ASCII. 118 */ 119 #define WAVAUDIO_FILE_MAGIC_RIFF ((u_int32_t)0x52494646) 120 #define WAVAUDIO_FILE_MAGIC_WAVE ((u_int32_t)0x57415645) 121 #define WAVAUDIO_FILE_MAGIC_FMT ((u_int32_t)0x666d7420) 122 #define WAVAUDIO_FILE_MAGIC_DATA ((u_int32_t)0x64617461) 123 124 /* From RFC 2361 */ 125 #define WAVE_FORMAT_UNKNOWN (0x0000) 126 #define WAVE_FORMAT_PCM (0x0001) 127 #define WAVE_FORMAT_ADPCM (0x0002) 128 #define WAVE_FORMAT_IEEE_FLOAT (0x0003) 129 #define WAVE_FORMAT_VSELP (0x0004) 130 #define WAVE_FORMAT_IBM_CVSD (0x0005) 131 #define WAVE_FORMAT_ALAW (0x0006) 132 #define WAVE_FORMAT_MULAW (0x0007) 133 #define WAVE_FORMAT_OKI_ADPCM (0x0010) 134 #define WAVE_FORMAT_IMA_ADPCM (0x0011) 135 #define WAVE_FORMAT_MEDIASPACE_ADPCM (0x0012) 136 #define WAVE_FORMAT_SIERRA_ADPCM (0x0013) 137 #define WAVE_FORMAT_G723_ADPCM (0x0014) 138 #define WAVE_FORMAT_DIGISTD (0x0015) 139 #define WAVE_FORMAT_DIGIFIX (0x0016) 140 #define WAVE_FORMAT_DIALOGIC_OKI_ADPCM (0x0017) 141 #define WAVE_FORMAT_MEDIAVISION_ADPCM (0x0018) 142 #define WAVE_FORMAT_CU_CODEC (0x0019) 143 #define WAVE_FORMAT_YAMAHA_ADPCM (0x0020) 144 #define WAVE_FORMAT_SONARC (0x0021) 145 #define WAVE_FORMAT_DSPGROUP_TRUESPEECH (0x0022) 146 #define WAVE_FORMAT_ECHOSC1 (0x0023) 147 #define WAVE_FORMAT_AUDIOFILE_AF36 (0x0024) 148 #define WAVE_FORMAT_APTX (0x0025) 149 #define WAVE_FORMAT_AUDIOFILE_AF10 (0x0026) 150 #define WAVE_FORMAT_PROSODY_1612 (0x0027) 151 #define WAVE_FORMAT_LRC (0x0028) 152 #define WAVE_FORMAT_DOLBY_AC2 (0x0030) 153 #define WAVE_FORMAT_GSM610 (0x0031) 154 #define WAVE_FORMAT_MSNAUDIO (0x0032) 155 #define WAVE_FORMAT_ANTEX_ADPCME (0x0033) 156 #define WAVE_FORMAT_CONTROL_RES_VQLPC (0x0034) 157 #define WAVE_FORMAT_DIGIREAL (0x0035) 158 #define WAVE_FORMAT_DIGIADPCM (0x0036) 159 #define WAVE_FORMAT_CONTROL_RES_CR10 (0x0037) 160 #define WAVE_FORMAT_NMS_VBXADPCM (0x0038) 161 #define WAVE_FORMAT_ROLAND_RDAC (0x0039) 162 #define WAVE_FORMAT_ECHOSC3 (0x003a) 163 #define WAVE_FORMAT_ROCKWELL_ADPCM (0x003b) 164 #define WAVE_FORMAT_ROCKWELL_DIGITALK (0x003c) 165 #define WAVE_FORMAT_XEBEC (0x003d) 166 #define WAVE_FORMAT_G721_ADPCM (0x0040) 167 #define WAVE_FORMAT_G728_CELP (0x0041) 168 #define WAVE_FORMAT_MSG723 (0x0042) 169 #define WAVE_FORMAT_MPEG (0x0050) 170 #define WAVE_FORMAT_RT24 (0x0052) 171 #define WAVE_FORMAT_PAC (0x0053) 172 #define WAVE_FORMAT_MPEGLAYER3 (0x0055) 173 #define WAVE_FORMAT_LUCENT_G723 (0x0059) 174 #define WAVE_FORMAT_CIRRUS (0x0060) 175 #define WAVE_FORMAT_ESPCM (0x0061) 176 #define WAVE_FORMAT_VOXWARE (0x0062) 177 #define WAVE_FORMAT_CANOPUS_ATRAC (0x0063) 178 #define WAVE_FORMAT_G726_ADPCM (0x0064) 179 #define WAVE_FORMAT_G722_ADPCM (0x0065) 180 #define WAVE_FORMAT_DSAT (0x0066) 181 #define WAVE_FORMAT_DSAT_DISPLAY (0x0067) 182 #define WAVE_FORMAT_VOXWARE_BYTE_ALIGNED (0x0069) 183 #define WAVE_FORMAT_VOXWARE_AC8 (0x0070) 184 #define WAVE_FORMAT_VOXWARE_AC10 (0x0071) 185 #define WAVE_FORMAT_VOXWARE_AC16 (0x0072) 186 #define WAVE_FORMAT_VOXWARE_AC20 (0x0073) 187 #define WAVE_FORMAT_VOXWARE_RT24 (0x0074) 188 #define WAVE_FORMAT_VOXWARE_RT29 (0x0075) 189 #define WAVE_FORMAT_VOXWARE_RT29HW (0x0076) 190 #define WAVE_FORMAT_VOXWARE_VR12 (0x0077) 191 #define WAVE_FORMAT_VOXWARE_VR18 (0x0078) 192 #define WAVE_FORMAT_VOXWARE_TQ40 (0x0079) 193 #define WAVE_FORMAT_SOFTSOUND (0x0080) 194 #define WAVE_FORMAT_VOXWARE_TQ60 (0x0081) 195 #define WAVE_FORMAT_MSRT24 (0x0082) 196 #define WAVE_FORMAT_G729A (0x0083) 197 #define WAVE_FORMAT_MVI_MV12 (0x0084) 198 #define WAVE_FORMAT_DF_G726 (0x0085) 199 #define WAVE_FORMAT_DF_GSM610 (0x0086) 200 #define WAVE_FORMAT_ISIAUDIO (0x0088) 201 #define WAVE_FORMAT_ONLIVE (0x0089) 202 #define WAVE_FORMAT_SBC24 (0x0091) 203 #define WAVE_FORMAT_DOLBY_AC3_SPDIF (0x0092) 204 #define WAVE_FORMAT_ZYXEL_ADPCM (0x0097) 205 #define WAVE_FORMAT_PHILIPS_LPCBB (0x0098) 206 #define WAVE_FORMAT_PACKED (0x0099) 207 #define WAVE_FORMAT_RHETOREX_ADPCM (0x0100) 208 #define WAVE_FORMAT_IRAT (0x0101) 209 #define WAVE_FORMAT_VIVO_G723 (0x0111) 210 #define WAVE_FORMAT_VIVO_SIREN (0x0112) 211 #define WAVE_FORMAT_DIGITAL_G723 (0x0123) 212 #define WAVE_FORMAT_CREATIVE_ADPCM (0x0200) 213 #define WAVE_FORMAT_CREATIVE_FASTSPEECH8 (0x0202) 214 #define WAVE_FORMAT_CREATIVE_FASTSPEECH10 (0x0203) 215 #define WAVE_FORMAT_QUARTERDECK (0x0220) 216 #define WAVE_FORMAT_FM_TOWNS_SND (0x0300) 217 #define WAVE_FORMAT_BTV_DIGITAL (0x0400) 218 #define WAVE_FORMAT_VME_VMPCM (0x0680) 219 #define WAVE_FORMAT_OLIGSM (0x1000) 220 #define WAVE_FORMAT_OLIADPCM (0x1001) 221 #define WAVE_FORMAT_OLICELP (0x1002) 222 #define WAVE_FORMAT_OLISBC (0x1003) 223 #define WAVE_FORMAT_OLIOPR (0x1004) 224 #define WAVE_FORMAT_LH_CODEC (0x1100) 225 #define WAVE_FORMAT_NORRIS (0x1400) 226 #define WAVE_FORMAT_ISIAUDIO2 (0x1401) 227 #define WAVE_FORMAT_SOUNDSPACE_MUSICOMPRESS (0x1500) 228 #define WAVE_FORMAT_DVM (0x2000) 229 230 #define WAVE_FORMAT_EXTENSIBLE (0xfffe) 231 232 const char *wav_enc_from_val (int); 233 234 typedef struct { 235 char name[4]; 236 u_int32_t len; 237 } wav_audioheaderpart; 238 239 typedef struct { 240 u_int16_t tag; 241 u_int16_t channels; 242 u_int32_t sample_rate; 243 u_int32_t avg_bytes_per_sec; 244 u_int16_t alignment; 245 u_int16_t bits_per_sample; 246 } __packed wav_audioheaderfmt; 247 248 typedef struct { 249 u_int16_t len; 250 u_int16_t valid_bits; 251 u_int32_t speaker_pos_mask; 252 u_int16_t sub_tag; 253 u_int8_t guid[14]; 254 } __packed wav_audiohdrextensible; 255 256 /* returns size of header, or -ve for failure */ 257 ssize_t audio_wav_parse_hdr (void *, size_t, u_int *, u_int *, u_int *, u_int *, off_t *); 258 259 extern int verbose; 260 261 /* 262 * audio routine error codes 263 */ 264 #define AUDIO_ENOENT -1 /* no such audio format */ 265 #define AUDIO_ESHORTHDR -2 /* short header */ 266 #define AUDIO_EWAVUNSUPP -3 /* WAV: unsupported file */ 267 #define AUDIO_EWAVBADPCM -4 /* WAV: bad PCM bps */ 268 #define AUDIO_EWAVNODATA -5 /* WAV: missing data */ 269 #define AUDIO_EINTERNAL -6 /* internal error */ 270 271 #define AUDIO_MAXERRNO 5 272 273 /* and something to get a string associated with this error */ 274 const char *audio_errstring (int); 275 276 /* 277 * generic routines? 278 */ 279 void decode_int (const char *, int *); 280 void decode_uint (const char *, unsigned *); 281 void decode_time (const char *, struct timeval *); 282 void decode_encoding (const char *, int *); 283 284 /* 285 * Track info, for reading/writing sun/wav header. 286 * 287 * Note that write_header() may change the values of format, 288 * encoding. 289 */ 290 291 struct track_info { 292 int outfd; 293 char *header_info; 294 int format; 295 int encoding; 296 int precision; 297 int qflag; 298 off_t total_size; 299 int sample_rate; 300 int channels; 301 }; 302 303 typedef void (*write_conv_func) (u_char *, int); 304 305 void write_header (struct track_info *); 306 write_conv_func write_get_conv_func(struct track_info *); 307 308 /* backends for the above */ 309 int sun_prepare_header(struct track_info *ti, void **hdrp, size_t *lenp, int *leftp); 310 int wav_prepare_header(struct track_info *ti, void **hdrp, size_t *lenp, int *leftp); 311 write_conv_func sun_write_get_conv_func(struct track_info *ti); 312 write_conv_func wav_write_get_conv_func(struct track_info *ti); 313 314 extern char audio_default_info[8]; 315 316 /* 317 * get/put 16/32 bits of big/little endian data 318 */ 319 #include <sys/types.h> 320 #include <machine/endian.h> 321 #include <machine/bswap.h> 322 323 #if BYTE_ORDER == BIG_ENDIAN 324 325 #define getle16(v) bswap16(v) 326 #define getle32(v) bswap32(v) 327 #define getbe16(v) (v) 328 #define getbe32(v) (v) 329 330 #define putle16(x,v) (x) = bswap16(v) 331 #define putle32(x,v) (x) = bswap32(v) 332 #define putbe16(x,v) (x) = (v) 333 #define putbe32(x,v) (x) = (v) 334 335 #else 336 337 #define getle16(v) (v) 338 #define getle32(v) (v) 339 #define getbe16(v) bswap16(v) 340 #define getbe32(v) bswap32(v) 341 342 #define putle16(x,v) (x) = (v) 343 #define putle32(x,v) (x) = (v) 344 #define putbe16(x,v) (x) = bswap16(v) 345 #define putbe32(x,v) (x) = bswap32(v) 346 347 #endif 348
Indexes created Wed Sep 24 05:09:52 GMT 2025