record.c revision 1.25
1 /* $NetBSD: record.c,v 1.25 2002/02/10 13:16:08 mrg 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 switch (encoding) { 325 case AUDIO_ENCODING_ULINEAR_LE: 326 #if BYTE_ORDER == LITTLE_ENDIAN 327 case AUDIO_ENCODING_ULINEAR: 328 #endif 329 if (precision == 16) 330 conv_func = swap_bytes; 331 else if (precision == 32) 332 conv_func = swap_bytes32; 333 if (conv_func) 334 encoding = AUDIO_ENCODING_SLINEAR_BE; 335 break; 336 337 case AUDIO_ENCODING_ULINEAR_BE: 338 #if BYTE_ORDER == BIG_ENDIAN 339 case AUDIO_ENCODING_ULINEAR: 340 #endif 341 if (precision == 16) 342 conv_func = change_sign16_be; 343 else if (precision == 32) 344 conv_func = change_sign32_be; 345 if (conv_func) 346 encoding = AUDIO_ENCODING_SLINEAR_BE; 347 break; 348 349 case AUDIO_ENCODING_SLINEAR_LE: 350 #if BYTE_ORDER == LITTLE_ENDIAN 351 case AUDIO_ENCODING_SLINEAR: 352 #endif 353 if (precision == 16) 354 conv_func = change_sign16_swap_bytes_le; 355 else if (precision == 32) 356 conv_func = change_sign32_swap_bytes_le; 357 if (conv_func) 358 encoding = AUDIO_ENCODING_SLINEAR_BE; 359 break; 360 361 #if BYTE_ORDER == BIG_ENDIAN 362 case AUDIO_ENCODING_SLINEAR: 363 encoding = AUDIO_ENCODING_SLINEAR_BE; 364 break; 365 #endif 366 } 367 368 /* if we can't express this as a Sun header, don't write any */ 369 if (audio_encoding_to_sun(encoding, precision, &sunenc) != 0) { 370 if (!qflag && !warned) { 371 const char *s = audio_enc_from_val(oencoding); 372 373 if (s == NULL) 374 s = "(unknown)"; 375 warnx("failed to convert to sun encoding from %s " 376 "(precision %d);\nSun audio header not written", 377 s, precision); 378 } 379 conv_func = 0; 380 warned = 1; 381 return -1; 382 } 383 384 auh.magic = htonl(AUDIO_FILE_MAGIC); 385 if (outfd == STDOUT_FILENO) 386 auh.data_size = htonl(AUDIO_UNKNOWN_SIZE); 387 else 388 auh.data_size = htonl(total_size); 389 auh.encoding = htonl(sunenc); 390 auh.sample_rate = htonl(sample_rate); 391 auh.channels = htonl(channels); 392 if (header_info) { 393 int len, infolen; 394 395 infolen = ((len = strlen(header_info)) + 7) & 0xfffffff8; 396 *leftp = infolen - len; 397 auh.hdr_size = htonl(sizeof(auh) + infolen); 398 } else { 399 *leftp = sizeof(default_info); 400 auh.hdr_size = htonl(sizeof(auh) + *leftp); 401 } 402 *(sun_audioheader **)hdrp = &auh; 403 *lenp = sizeof auh; 404 return 0; 405 } 406 407 int 408 write_header_wav(hdrp, lenp, leftp) 409 void **hdrp; 410 size_t *lenp; 411 int *leftp; 412 { 413 /* 414 * WAV header we write looks like this: 415 * 416 * bytes purpose 417 * 0-3 "RIFF" 418 * 4-7 file length (minus 8) 419 * 8-15 "WAVEfmt " 420 * 16-19 format size 421 * 20-21 format tag 422 * 22-23 number of channels 423 * 24-27 sample rate 424 * 28-31 average bytes per second 425 * 32-33 block alignment 426 * 34-35 bits per sample 427 * 428 * then for ULAW and ALAW outputs, we have an extended chunk size 429 * and a WAV "fact" to add: 430 * 431 * 36-37 length of extension (== 0) 432 * 38-41 "fact" 433 * 42-45 fact size 434 * 46-49 number of samples written 435 * 50-53 "data" 436 * 54-57 data length 437 * 58- raw audio data 438 * 439 * for PCM outputs we have just the data remaining: 440 * 441 * 36-39 "data" 442 * 40-43 data length 443 * 44- raw audio data 444 * 445 * RIFF\^@^C^@WAVEfmt ^P^@^@^@^A^@^B^@D<AC>^@^@^P<B1>^B^@^D^@^P^@data^@^@^C^@^@^@^@^@^@^@^@^@^@ 446 */ 447 char wavheaderbuf[64], *p = wavheaderbuf; 448 const char *riff = "RIFF", 449 *wavefmt = "WAVEfmt ", 450 *fact = "fact", 451 *data = "data"; 452 u_int32_t filelen, fmtsz, sps, abps, factsz = 4, nsample, datalen; 453 u_int16_t fmttag, nchan, align, bps, extln = 0; 454 455 if (header_info) 456 warnx("header information not supported for WAV"); 457 *leftp = NULL; 458 459 switch (precision) { 460 case 8: 461 bps = 8; 462 break; 463 case 16: 464 bps = 16; 465 break; 466 case 32: 467 bps = 32; 468 break; 469 default: 470 { 471 static int warned = 0; 472 473 if (warned == 0) { 474 warnx("can not support precision of %d\n", precision); 475 warned = 1; 476 } 477 } 478 return (-1); 479 } 480 481 switch (encoding) { 482 case AUDIO_ENCODING_ULAW: 483 fmttag = WAVE_FORMAT_MULAW; 484 fmtsz = 18; 485 align = channels; 486 break; 487 case AUDIO_ENCODING_ALAW: 488 fmttag = WAVE_FORMAT_ALAW; 489 fmtsz = 18; 490 align = channels; 491 break; 492 /* 493 * we could try to support RIFX but it seems to be more portable 494 * to output little-endian data for WAV files. 495 */ 496 case AUDIO_ENCODING_ULINEAR_BE: 497 if (bps == 16) 498 conv_func = change_sign16_swap_bytes_be; 499 else if (bps == 32) 500 conv_func = change_sign32_swap_bytes_be; 501 goto fmt_pcm; 502 case AUDIO_ENCODING_SLINEAR_BE: 503 if (bps == 16) 504 conv_func = swap_bytes; 505 else if (bps == 32) 506 conv_func = swap_bytes32; 507 goto fmt_pcm; 508 case AUDIO_ENCODING_ULINEAR_LE: 509 if (bps == 16) 510 conv_func = change_sign16_le; 511 else if (bps == 32) 512 conv_func = change_sign32_le; 513 /* FALLTHROUGH */ 514 case AUDIO_ENCODING_SLINEAR_LE: 515 case AUDIO_ENCODING_PCM16: 516 fmt_pcm: 517 fmttag = WAVE_FORMAT_PCM; 518 fmtsz = 16; 519 align = channels * (bps / 8); 520 break; 521 default: 522 { 523 static int warned = 0; 524 525 if (warned == 0) { 526 warnx("can not support encoding of %s\n", wav_enc_from_val(encoding)); 527 warned = 1; 528 } 529 } 530 return (-1); 531 } 532 533 nchan = channels; 534 sps = sample_rate; 535 536 /* data length */ 537 if (outfd == STDOUT_FILENO) 538 datalen = 0; 539 else 540 datalen = total_size; 541 542 /* file length */ 543 filelen = 4 + (8 + fmtsz) + (8 + datalen); 544 if (fmttag != WAVE_FORMAT_PCM) 545 filelen += 8 + factsz; 546 547 abps = (double)align*sample_rate / (double)1 + 0.5; 548 549 nsample = (datalen / bps) / sample_rate; 550 551 /* 552 * now we've calculated the info, write it out! 553 */ 554 #define put32(x) do { \ 555 u_int32_t _f; \ 556 putle32(_f, (x)); \ 557 memcpy(p, &_f, 4); \ 558 } while (0) 559 #define put16(x) do { \ 560 u_int16_t _f; \ 561 putle16(_f, (x)); \ 562 memcpy(p, &_f, 2); \ 563 } while (0) 564 memcpy(p, riff, 4); 565 p += 4; /* 4 */ 566 put32(filelen); 567 p += 4; /* 8 */ 568 memcpy(p, wavefmt, 8); 569 p += 8; /* 16 */ 570 put32(fmtsz); 571 p += 4; /* 20 */ 572 put16(fmttag); 573 p += 2; /* 22 */ 574 put16(nchan); 575 p += 2; /* 24 */ 576 put32(sps); 577 p += 4; /* 28 */ 578 put32(abps); 579 p += 4; /* 32 */ 580 put16(align); 581 p += 2; /* 34 */ 582 put16(bps); 583 p += 2; /* 36 */ 584 /* NON PCM formats have an extended chunk; write it */ 585 if (fmttag != WAVE_FORMAT_PCM) { 586 put16(extln); 587 p += 2; /* 38 */ 588 memcpy(p, fact, 4); 589 p += 4; /* 42 */ 590 put32(factsz); 591 p += 4; /* 46 */ 592 put32(nsample); 593 p += 4; /* 50 */ 594 } 595 memcpy(p, data, 4); 596 p += 4; /* 40/54 */ 597 put32(datalen); 598 p += 4; /* 44/58 */ 599 #undef put32 600 #undef put16 601 602 *hdrp = wavheaderbuf; 603 *lenp = (p - wavheaderbuf); 604 605 return 0; 606 } 607 608 void 609 write_header() 610 { 611 struct iovec iv[3]; 612 int veclen, left, tlen; 613 void *hdr; 614 size_t hdrlen; 615 616 switch (format) { 617 case AUDIO_FORMAT_SUN: 618 if (write_header_sun(&hdr, &hdrlen, &left) != 0) 619 return; 620 break; 621 case AUDIO_FORMAT_WAV: 622 if (write_header_wav(&hdr, &hdrlen, &left) != 0) 623 return; 624 break; 625 case AUDIO_FORMAT_NONE: 626 return; 627 default: 628 errx(1, "unknown audio format"); 629 } 630 631 veclen = 0; 632 tlen = 0; 633 634 if (hdrlen != 0) { 635 iv[veclen].iov_base = hdr; 636 iv[veclen].iov_len = hdrlen; 637 tlen += iv[veclen++].iov_len; 638 } 639 if (header_info) { 640 iv[veclen].iov_base = header_info; 641 iv[veclen].iov_len = (int)strlen(header_info) + 1; 642 tlen += iv[veclen++].iov_len; 643 } 644 if (left) { 645 iv[veclen].iov_base = default_info; 646 iv[veclen].iov_len = left; 647 tlen += iv[veclen++].iov_len; 648 } 649 650 if (tlen == 0) 651 return; 652 653 if (writev(outfd, iv, veclen) != tlen) 654 err(1, "could not write audio header"); 655 } 656 657 void 658 rewrite_header() 659 { 660 661 /* can't do this here! */ 662 if (outfd == STDOUT_FILENO) 663 return; 664 665 if (lseek(outfd, SEEK_SET, 0) < 0) 666 err(1, "could not seek to start of file for header rewrite"); 667 write_header(); 668 } 669 670 void 671 usage() 672 { 673 674 fprintf(stderr, "Usage: %s [-afhqV] [options] {files ...|-}\n", 675 getprogname()); 676 fprintf(stderr, "Options:\n\t" 677 "-F format\n\t" 678 "-b balance (0-63)\n\t" 679 "-c channels\n\t" 680 "-d audio device\n\t" 681 "-e encoding\n\t" 682 "-i header information\n\t" 683 "-m monitor volume\n\t" 684 "-P precision bits (4, 8, 16, 24 or 32)\n\t" 685 "-p input port\n\t" 686 "-s sample rate\n\t" 687 "-t recording time\n\t" 688 "-v volume\n"); 689 exit(EXIT_FAILURE); 690 } 691
Indexes created Fri Oct 03 02:09:57 GMT 2025