record.c revision 1.24
1 /* $NetBSD: record.c,v 1.24 2002/02/05 00:17:27 augustss Exp $ */ 2 3 /* 4 * Copyright (c) 1999 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 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 /* 32 * SunOS compatible audiorecord(1) 33 */ 34 35 #include <sys/types.h> 36 #include <sys/audioio.h> 37 #include <sys/ioctl.h> 38 #include <sys/time.h> 39 #include <sys/uio.h> 40 41 #include <err.h> 42 #include <fcntl.h> 43 #include <paths.h> 44 #include <signal.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <string.h> 48 #include <unistd.h> 49 50 #include "libaudio.h" 51 #include "auconv.h" 52 53 audio_info_t info, oinfo; 54 ssize_t total_size = -1; 55 const char *device; 56 int format = AUDIO_FORMAT_SUN; 57 char *header_info; 58 char default_info[8] = { '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0' }; 59 int audiofd, outfd; 60 int qflag, aflag, fflag; 61 int verbose; 62 int monitor_gain, omonitor_gain; 63 int gain; 64 int balance; 65 int port; 66 int encoding; 67 char *encoding_str; 68 int precision; 69 int sample_rate; 70 int channels; 71 struct timeval record_time; 72 struct timeval start_time; /* XXX because that's what gettimeofday returns */ 73 74 void (*conv_func) (u_char *, size_t); 75 76 void usage (void); 77 int main (int, char *[]); 78 int timeleft (struct timeval *, struct timeval *); 79 void cleanup (int) __attribute__((__noreturn__)); 80 int write_header_sun (void **, size_t *, int *); 81 int write_header_wav (void **, size_t *, int *); 82 void write_header (void); 83 void rewrite_header (void); 84 85 int 86 main(argc, argv) 87 int argc; 88 char *argv[]; 89 { 90 char *buffer; 91 size_t len, bufsize; 92 int ch, no_time_limit = 1; 93 const char *defdevice = _PATH_SOUND; 94 95 while ((ch = getopt(argc, argv, "ab:C:F:c:d:e:fhi:m:P:p:qt:s:Vv:")) != -1) { 96 switch (ch) { 97 case 'a': 98 aflag++; 99 break; 100 case 'b': 101 decode_int(optarg, &balance); 102 if (balance < 0 || balance > 63) 103 errx(1, "balance must be between 0 and 63\n"); 104 break; 105 case 'C': 106 /* Ignore, compatibility */ 107 break; 108 case 'F': 109 format = audio_format_from_str(optarg); 110 if (format < 0) 111 errx(1, "Unknown audio format; " 112 "supported formats: \"sun\" and \"wav\""); 113 break; 114 case 'c': 115 decode_int(optarg, &channels); 116 if (channels < 0 || channels > 16) 117 errx(1, "channels must be between 0 and 16\n"); 118 break; 119 case 'd': 120 device = optarg; 121 break; 122 case 'e': 123 encoding_str = optarg; 124 break; 125 case 'f': 126 fflag++; 127 break; 128 case 'i': 129 header_info = optarg; 130 break; 131 case 'm': 132 decode_int(optarg, &monitor_gain); 133 if (monitor_gain < 0 || monitor_gain > 255) 134 errx(1, "monitor volume must be between 0 and 255\n"); 135 break; 136 case 'P': 137 decode_int(optarg, &precision); 138 if (precision != 4 && precision != 8 && 139 precision != 16 && precision != 24 && 140 precision != 32) 141 errx(1, "precision must be between 4, 8, 16, 24 or 32"); 142 break; 143 case 'p': 144 len = strlen(optarg); 145 146 if (strncmp(optarg, "mic", len) == 0) 147 port |= AUDIO_MICROPHONE; 148 else if (strncmp(optarg, "cd", len) == 0 || 149 strncmp(optarg, "internal-cd", len) == 0) 150 port |= AUDIO_CD; 151 else if (strncmp(optarg, "line", len) == 0) 152 port |= AUDIO_LINE_IN; 153 else 154 errx(1, 155 "port must be `cd', `internal-cd', `mic', or `line'"); 156 break; 157 case 'q': 158 qflag++; 159 break; 160 case 's': 161 decode_int(optarg, &sample_rate); 162 if (sample_rate < 0 || sample_rate > 48000 * 2) /* XXX */ 163 errx(1, "sample rate must be between 0 and 96000\n"); 164 break; 165 case 't': 166 no_time_limit = 0; 167 decode_time(optarg, &record_time); 168 break; 169 case 'V': 170 verbose++; 171 break; 172 case 'v': 173 decode_int(optarg, &gain); 174 if (gain < 0 || gain > 255) 175 errx(1, "volume must be between 0 and 255\n"); 176 break; 177 /* case 'h': */ 178 default: 179 usage(); 180 /* NOTREACHED */ 181 } 182 } 183 argc -= optind; 184 argv += optind; 185 186 /* 187 * open the audio device, and control device 188 */ 189 if (device == NULL && (device = getenv("AUDIODEVICE")) == NULL && 190 (device = getenv("AUDIODEV")) == NULL) /* Sun compatibility */ 191 device = defdevice; 192 193 audiofd = open(device, O_RDONLY); 194 if (audiofd < 0 && device == defdevice) { 195 device = _PATH_SOUND0; 196 audiofd = open(device, O_WRONLY); 197 } 198 if (audiofd < 0) 199 err(1, "failed to open %s", device); 200 201 /* 202 * work out the buffer size to use, and allocate it. also work out 203 * what the old monitor gain value is, so that we can reset it later. 204 */ 205 if (ioctl(audiofd, AUDIO_GETINFO, &oinfo) < 0) 206 err(1, "failed to get audio info"); 207 bufsize = oinfo.record.buffer_size; 208 if (bufsize < 32 * 1024) 209 bufsize = 32 * 1024; 210 omonitor_gain = oinfo.monitor_gain; 211 212 buffer = malloc(bufsize); 213 if (buffer == NULL) 214 err(1, "couldn't malloc buffer of %d size", (int)bufsize); 215 216 /* 217 * open the output file 218 */ 219 if (argc != 1) 220 usage(); 221 if (argv[0][0] != '-' && argv[0][1] != '\0') { 222 outfd = open(*argv, O_CREAT|(aflag ? O_APPEND : O_TRUNC)|O_WRONLY, 0666); 223 if (outfd < 0) 224 err(1, "could not open %s", *argv); 225 } else 226 outfd = STDOUT_FILENO; 227 228 /* 229 * convert the encoding string into a value. 230 */ 231 if (encoding_str) { 232 encoding = audio_enc_to_val(encoding_str); 233 if (encoding == -1) 234 errx(1, "unknown encoding, bailing..."); 235 } 236 else 237 encoding = AUDIO_ENCODING_ULAW; 238 239 /* 240 * set up audio device for recording with the speified parameters 241 */ 242 AUDIO_INITINFO(&info); 243 244 /* 245 * for these, get the current values for stuffing into the header 246 */ 247 #define SETINFO(x) if (x) info.record.x = x; else x = oinfo.record.x 248 SETINFO (sample_rate); 249 SETINFO (channels); 250 SETINFO (precision); 251 SETINFO (encoding); 252 SETINFO (gain); 253 SETINFO (port); 254 SETINFO (balance); 255 #undef SETINFO 256 257 if (monitor_gain) 258 info.monitor_gain = monitor_gain; 259 else 260 monitor_gain = oinfo.monitor_gain; 261 262 info.mode = AUMODE_RECORD; 263 if (ioctl(audiofd, AUDIO_SETINFO, &info) < 0) 264 err(1, "failed to reset audio info"); 265 266 signal(SIGINT, cleanup); 267 write_header(); 268 total_size = 0; 269 270 (void)gettimeofday(&start_time, NULL); 271 while (no_time_limit || timeleft(&start_time, &record_time)) { 272 if (read(audiofd, buffer, bufsize) != bufsize) 273 err(1, "read failed"); 274 if (conv_func) 275 (*conv_func)(buffer, bufsize); 276 if (write(outfd, buffer, bufsize) != bufsize) 277 err(1, "write failed"); 278 total_size += bufsize; 279 } 280 cleanup(0); 281 } 282 283 int 284 timeleft(start_tvp, record_tvp) 285 struct timeval *start_tvp; 286 struct timeval *record_tvp; 287 { 288 struct timeval now, diff; 289 290 (void)gettimeofday(&now, NULL); 291 timersub(&now, start_tvp, &diff); 292 timersub(record_tvp, &diff, &now); 293 294 return (now.tv_sec > 0 || (now.tv_sec == 0 && now.tv_usec > 0)); 295 } 296 297 void 298 cleanup(signo) 299 int signo; 300 { 301 302 rewrite_header(); 303 close(outfd); 304 if (omonitor_gain) { 305 AUDIO_INITINFO(&info); 306 info.monitor_gain = omonitor_gain; 307 if (ioctl(audiofd, AUDIO_SETINFO, &info) < 0) 308 err(1, "failed to reset audio info"); 309 } 310 close(audiofd); 311 exit(0); 312 } 313 314 int 315 write_header_sun(hdrp, lenp, leftp) 316 void **hdrp; 317 size_t *lenp; 318 int *leftp; 319 { 320 static int warned = 0; 321 static sun_audioheader auh; 322 int sunenc, oencoding = encoding; 323 324 if (encoding == AUDIO_ENCODING_ULINEAR_LE) { 325 if (precision == 16) 326 conv_func = swap_bytes; 327 else if (precision == 32) 328 conv_func = swap_bytes32; 329 if (conv_func) 330 encoding = AUDIO_ENCODING_SLINEAR_BE; 331 } else if (encoding == AUDIO_ENCODING_ULINEAR_BE) { 332 if (precision == 16) 333 conv_func = change_sign16_be; 334 else if (precision == 32) 335 conv_func = change_sign32_be; 336 if (conv_func) 337 encoding = AUDIO_ENCODING_SLINEAR_BE; 338 } else if (encoding == AUDIO_ENCODING_SLINEAR_LE) { 339 if (precision == 16) 340 conv_func = change_sign16_swap_bytes_le; 341 else if (precision == 32) 342 conv_func = change_sign32_swap_bytes_le; 343 if (conv_func) 344 encoding = AUDIO_ENCODING_SLINEAR_BE; 345 } 346 347 /* if we can't express this as a Sun header, don't write any */ 348 if (audio_encoding_to_sun(encoding, precision, &sunenc) != 0) { 349 if (!qflag && !warned) 350 warnx("failed to convert to sun encoding from %d:%d; " 351 "Sun audio header not written", 352 oencoding, precision); 353 conv_func = 0; 354 warned = 1; 355 return -1; 356 } 357 358 auh.magic = htonl(AUDIO_FILE_MAGIC); 359 if (outfd == STDOUT_FILENO) 360 auh.data_size = htonl(AUDIO_UNKNOWN_SIZE); 361 else 362 auh.data_size = htonl(total_size); 363 auh.encoding = htonl(sunenc); 364 auh.sample_rate = htonl(sample_rate); 365 auh.channels = htonl(channels); 366 if (header_info) { 367 int len, infolen; 368 369 infolen = ((len = strlen(header_info)) + 7) & 0xfffffff8; 370 *leftp = infolen - len; 371 auh.hdr_size = htonl(sizeof(auh) + infolen); 372 } else { 373 *leftp = sizeof(default_info); 374 auh.hdr_size = htonl(sizeof(auh) + *leftp); 375 } 376 *(sun_audioheader **)hdrp = &auh; 377 *lenp = sizeof auh; 378 return 0; 379 } 380 381 int 382 write_header_wav(hdrp, lenp, leftp) 383 void **hdrp; 384 size_t *lenp; 385 int *leftp; 386 { 387 /* 388 * WAV header we write looks like this: 389 * 390 * bytes purpose 391 * 0-3 "RIFF" 392 * 4-7 file length (minus 8) 393 * 8-15 "WAVEfmt " 394 * 16-19 format size 395 * 20-21 format tag 396 * 22-23 number of channels 397 * 24-27 sample rate 398 * 28-31 average bytes per second 399 * 32-33 block alignment 400 * 34-35 bits per sample 401 * 402 * then for ULAW and ALAW outputs, we have an extended chunk size 403 * and a WAV "fact" to add: 404 * 405 * 36-37 length of extension (== 0) 406 * 38-41 "fact" 407 * 42-45 fact size 408 * 46-49 number of samples written 409 * 50-53 "data" 410 * 54-57 data length 411 * 58- raw audio data 412 * 413 * for PCM outputs we have just the data remaining: 414 * 415 * 36-39 "data" 416 * 40-43 data length 417 * 44- raw audio data 418 * 419 * RIFF\^@^C^@WAVEfmt ^P^@^@^@^A^@^B^@D<AC>^@^@^P<B1>^B^@^D^@^P^@data^@^@^C^@^@^@^@^@^@^@^@^@^@ 420 */ 421 char wavheaderbuf[64], *p = wavheaderbuf; 422 const char *riff = "RIFF", 423 *wavefmt = "WAVEfmt ", 424 *fact = "fact", 425 *data = "data"; 426 u_int32_t filelen, fmtsz, sps, abps, factsz = 4, nsample, datalen; 427 u_int16_t fmttag, nchan, align, bps, extln = 0; 428 429 if (header_info) 430 warnx("header information not supported for WAV"); 431 *leftp = NULL; 432 433 switch (precision) { 434 case 8: 435 bps = 8; 436 break; 437 case 16: 438 bps = 16; 439 break; 440 case 32: 441 bps = 32; 442 break; 443 default: 444 { 445 static int warned = 0; 446 447 if (warned == 0) { 448 warnx("can not support precision of %d\n", precision); 449 warned = 1; 450 } 451 } 452 return (-1); 453 } 454 455 switch (encoding) { 456 case AUDIO_ENCODING_ULAW: 457 fmttag = WAVE_FORMAT_MULAW; 458 fmtsz = 18; 459 align = channels; 460 break; 461 case AUDIO_ENCODING_ALAW: 462 fmttag = WAVE_FORMAT_ALAW; 463 fmtsz = 18; 464 align = channels; 465 break; 466 /* 467 * we could try to support RIFX but it seems to be more portable 468 * to output little-endian data for WAV files. 469 */ 470 case AUDIO_ENCODING_ULINEAR_BE: 471 if (bps == 16) 472 conv_func = change_sign16_swap_bytes_be; 473 else if (bps == 32) 474 conv_func = change_sign32_swap_bytes_be; 475 goto fmt_pcm; 476 case AUDIO_ENCODING_SLINEAR_BE: 477 if (bps == 16) 478 conv_func = swap_bytes; 479 else if (bps == 32) 480 conv_func = swap_bytes32; 481 goto fmt_pcm; 482 case AUDIO_ENCODING_ULINEAR_LE: 483 if (bps == 16) 484 conv_func = change_sign16_le; 485 else if (bps == 32) 486 conv_func = change_sign32_le; 487 /* FALLTHROUGH */ 488 case AUDIO_ENCODING_SLINEAR_LE: 489 case AUDIO_ENCODING_PCM16: 490 fmt_pcm: 491 fmttag = WAVE_FORMAT_PCM; 492 fmtsz = 16; 493 align = channels * (bps / 8); 494 break; 495 default: 496 { 497 static int warned = 0; 498 499 if (warned == 0) { 500 warnx("can not support encoding of %s\n", wav_enc_from_val(encoding)); 501 warned = 1; 502 } 503 } 504 return (-1); 505 } 506 507 nchan = channels; 508 sps = sample_rate; 509 510 /* data length */ 511 if (outfd == STDOUT_FILENO) 512 datalen = 0; 513 else 514 datalen = total_size; 515 516 /* file length */ 517 filelen = 4 + (8 + fmtsz) + (8 + datalen); 518 if (fmttag != WAVE_FORMAT_PCM) 519 filelen += 8 + factsz; 520 521 abps = (double)align*sample_rate / (double)1 + 0.5; 522 523 nsample = (datalen / bps) / sample_rate; 524 525 /* 526 * now we've calculated the info, write it out! 527 */ 528 #define put32(x) do { \ 529 u_int32_t _f; \ 530 putle32(_f, (x)); \ 531 memcpy(p, &_f, 4); \ 532 } while (0) 533 #define put16(x) do { \ 534 u_int16_t _f; \ 535 putle16(_f, (x)); \ 536 memcpy(p, &_f, 2); \ 537 } while (0) 538 memcpy(p, riff, 4); 539 p += 4; /* 4 */ 540 put32(filelen); 541 p += 4; /* 8 */ 542 memcpy(p, wavefmt, 8); 543 p += 8; /* 16 */ 544 put32(fmtsz); 545 p += 4; /* 20 */ 546 put16(fmttag); 547 p += 2; /* 22 */ 548 put16(nchan); 549 p += 2; /* 24 */ 550 put32(sps); 551 p += 4; /* 28 */ 552 put32(abps); 553 p += 4; /* 32 */ 554 put16(align); 555 p += 2; /* 34 */ 556 put16(bps); 557 p += 2; /* 36 */ 558 /* NON PCM formats have an extended chunk; write it */ 559 if (fmttag != WAVE_FORMAT_PCM) { 560 put16(extln); 561 p += 2; /* 38 */ 562 memcpy(p, fact, 4); 563 p += 4; /* 42 */ 564 put32(factsz); 565 p += 4; /* 46 */ 566 put32(nsample); 567 p += 4; /* 50 */ 568 } 569 memcpy(p, data, 4); 570 p += 4; /* 40/54 */ 571 put32(datalen); 572 p += 4; /* 44/58 */ 573 #undef put32 574 #undef put16 575 576 *hdrp = wavheaderbuf; 577 *lenp = (p - wavheaderbuf); 578 579 return 0; 580 } 581 582 void 583 write_header() 584 { 585 struct iovec iv[3]; 586 int veclen, left, tlen; 587 void *hdr; 588 size_t hdrlen; 589 590 switch (format) { 591 case AUDIO_FORMAT_SUN: 592 if (write_header_sun(&hdr, &hdrlen, &left) != 0) 593 return; 594 break; 595 case AUDIO_FORMAT_WAV: 596 if (write_header_wav(&hdr, &hdrlen, &left) != 0) 597 return; 598 break; 599 case AUDIO_FORMAT_NONE: 600 return; 601 default: 602 errx(1, "unknown audio format"); 603 } 604 605 veclen = 0; 606 tlen = 0; 607 608 if (hdrlen != 0) { 609 iv[veclen].iov_base = hdr; 610 iv[veclen].iov_len = hdrlen; 611 tlen += iv[veclen++].iov_len; 612 } 613 if (header_info) { 614 iv[veclen].iov_base = header_info; 615 iv[veclen].iov_len = (int)strlen(header_info) + 1; 616 tlen += iv[veclen++].iov_len; 617 } 618 if (left) { 619 iv[veclen].iov_base = default_info; 620 iv[veclen].iov_len = left; 621 tlen += iv[veclen++].iov_len; 622 } 623 624 if (tlen == 0) 625 return; 626 627 if (writev(outfd, iv, veclen) != tlen) 628 err(1, "could not write audio header"); 629 } 630 631 void 632 rewrite_header() 633 { 634 635 /* can't do this here! */ 636 if (outfd == STDOUT_FILENO) 637 return; 638 639 if (lseek(outfd, SEEK_SET, 0) < 0) 640 err(1, "could not seek to start of file for header rewrite"); 641 write_header(); 642 } 643 644 void 645 usage() 646 { 647 648 fprintf(stderr, "Usage: %s [-afhqV] [options] {files ...|-}\n", 649 getprogname()); 650 fprintf(stderr, "Options:\n\t" 651 "-F format\n\t" 652 "-b balance (0-63)\n\t" 653 "-c channels\n\t" 654 "-d audio device\n\t" 655 "-e encoding\n\t" 656 "-i header information\n\t" 657 "-m monitor volume\n\t" 658 "-P precision bits (4, 8, 16, 24 or 32)\n\t" 659 "-p input port\n\t" 660 "-s sample rate\n\t" 661 "-t recording time\n\t" 662 "-v volume\n"); 663 exit(EXIT_FAILURE); 664 } 665
Indexes created Thu Oct 02 14:10:14 GMT 2025