record.c revision 1.19
1 /* $NetBSD: record.c,v 1.19 2002/01/15 17:02:52 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 char *device; 56 char *ctldev; 57 int format = AUDIO_FORMAT_SUN; 58 char *header_info; 59 char default_info[8] = { '\0', '\0', '\0', '\0', '\0', '\0', '\0', '\0' }; 60 int audiofd, ctlfd, outfd; 61 int qflag, aflag, fflag; 62 int verbose; 63 int monitor_gain, omonitor_gain; 64 int gain; 65 int balance; 66 int port; 67 int encoding; 68 char *encoding_str; 69 int precision; 70 int sample_rate; 71 int channels; 72 struct timeval record_time; 73 struct timeval start_time; /* XXX because that's what gettimeofday returns */ 74 75 void (*conv_func) (u_char *, size_t); 76 77 void usage (void); 78 int main (int, char *[]); 79 int timeleft (struct timeval *, struct timeval *); 80 void cleanup (int) __attribute__((__noreturn__)); 81 int write_header_sun (void **, size_t *, int *); 82 int write_header_wav (void **, size_t *, int *); 83 void write_header (void); 84 void rewrite_header (void); 85 86 int 87 main(argc, argv) 88 int argc; 89 char *argv[]; 90 { 91 char *buffer; 92 size_t len, bufsize; 93 int ch, no_time_limit = 1; 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 ctldev = optarg; 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 = _PATH_AUDIO; 192 if (ctldev == NULL && (ctldev = getenv("AUDIOCTLDEVICE")) == NULL) 193 ctldev = _PATH_AUDIOCTL; 194 195 audiofd = open(device, O_RDONLY); 196 if (audiofd < 0) 197 err(1, "failed to open %s", device); 198 ctlfd = open(ctldev, O_RDWR); 199 if (ctlfd < 0) 200 err(1, "failed to open %s", ctldev); 201 202 /* 203 * work out the buffer size to use, and allocate it. also work out 204 * what the old monitor gain value is, so that we can reset it later. 205 */ 206 if (ioctl(ctlfd, AUDIO_GETINFO, &oinfo) < 0) 207 err(1, "failed to get audio info"); 208 bufsize = oinfo.record.buffer_size; 209 if (bufsize < 32 * 1024) 210 bufsize = 32 * 1024; 211 omonitor_gain = oinfo.monitor_gain; 212 213 buffer = malloc(bufsize); 214 if (buffer == NULL) 215 err(1, "couldn't malloc buffer of %d size", (int)bufsize); 216 217 /* 218 * open the output file 219 */ 220 if (argc != 1) 221 usage(); 222 if (argv[0][0] != '-' && argv[0][1] != '\0') { 223 outfd = open(*argv, O_CREAT|(aflag ? O_APPEND : O_TRUNC)|O_WRONLY, 0666); 224 if (outfd < 0) 225 err(1, "could not open %s", *argv); 226 } else 227 outfd = STDOUT_FILENO; 228 229 /* 230 * convert the encoding string into a value. 231 */ 232 if (encoding_str) { 233 encoding = audio_enc_to_val(encoding_str); 234 if (encoding == -1) 235 errx(1, "unknown encoding, bailing..."); 236 } 237 else 238 encoding = AUDIO_ENCODING_ULAW; 239 240 /* 241 * set up audio device for recording with the speified parameters 242 */ 243 AUDIO_INITINFO(&info); 244 245 /* 246 * for these, get the current values for stuffing into the header 247 */ 248 #define SETINFO(x) if (x) info.record.x = x; else x = oinfo.record.x 249 SETINFO (sample_rate); 250 SETINFO (channels); 251 SETINFO (precision); 252 SETINFO (encoding); 253 SETINFO (gain); 254 SETINFO (port); 255 SETINFO (balance); 256 #undef SETINFO 257 258 if (monitor_gain) 259 info.monitor_gain = monitor_gain; 260 else 261 monitor_gain = oinfo.monitor_gain; 262 263 info.mode = AUMODE_RECORD; 264 if (ioctl(ctlfd, AUDIO_SETINFO, &info) < 0) 265 err(1, "failed to reset audio info"); 266 267 signal(SIGINT, cleanup); 268 write_header(); 269 total_size = 0; 270 271 (void)gettimeofday(&start_time, NULL); 272 while (no_time_limit || timeleft(&start_time, &record_time)) { 273 if (read(audiofd, buffer, bufsize) != bufsize) 274 err(1, "read failed"); 275 if (conv_func) 276 (*conv_func)(buffer, bufsize); 277 if (write(outfd, buffer, bufsize) != bufsize) 278 err(1, "write failed"); 279 total_size += bufsize; 280 } 281 cleanup(0); 282 } 283 284 int 285 timeleft(start_tvp, record_tvp) 286 struct timeval *start_tvp; 287 struct timeval *record_tvp; 288 { 289 struct timeval now, diff; 290 291 (void)gettimeofday(&now, NULL); 292 timersub(&now, start_tvp, &diff); 293 timersub(record_tvp, &diff, &now); 294 295 return (now.tv_sec > 0 || (now.tv_sec == 0 && now.tv_usec > 0)); 296 } 297 298 void 299 cleanup(signo) 300 int signo; 301 { 302 303 close(audiofd); 304 rewrite_header(); 305 close(outfd); 306 if (omonitor_gain) { 307 AUDIO_INITINFO(&info); 308 info.monitor_gain = omonitor_gain; 309 if (ioctl(ctlfd, AUDIO_SETINFO, &info) < 0) 310 err(1, "failed to reset audio info"); 311 } 312 close(ctlfd); 313 exit(0); 314 } 315 316 int 317 write_header_sun(hdrp, lenp, leftp) 318 void **hdrp; 319 size_t *lenp; 320 int *leftp; 321 { 322 static int warned = 0; 323 static sun_audioheader auh; 324 int sunenc, oencoding = encoding; 325 326 if (encoding == AUDIO_ENCODING_ULINEAR_LE) { 327 if (precision == 16) 328 conv_func = swap_bytes; 329 else if (precision == 32) 330 conv_func = swap_bytes32; 331 encoding = AUDIO_ENCODING_SLINEAR_BE; 332 } else if (encoding == AUDIO_ENCODING_ULINEAR_BE) { 333 if (precision == 16) 334 conv_func = change_sign16_be; 335 else if (precision == 32) 336 conv_func = change_sign32_be; 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 encoding = AUDIO_ENCODING_SLINEAR_BE; 344 } 345 346 /* if we can't express this as a Sun header, don't write any */ 347 if (audio_encoding_to_sun(encoding, precision, &sunenc) != 0) { 348 if (!qflag && !warned) 349 warnx("failed to convert to sun encoding from %d:%d; " 350 "Sun audio header not written", 351 oencoding, precision); 352 conv_func = 0; 353 warned = 1; 354 return -1; 355 } 356 357 auh.magic = htonl(AUDIO_FILE_MAGIC); 358 if (outfd == STDOUT_FILENO) 359 auh.data_size = htonl(AUDIO_UNKNOWN_SIZE); 360 else 361 auh.data_size = htonl(total_size); 362 auh.encoding = htonl(sunenc); 363 auh.sample_rate = htonl(sample_rate); 364 auh.channels = htonl(channels); 365 if (header_info) { 366 int len, infolen; 367 368 infolen = ((len = strlen(header_info)) + 7) & 0xfffffff8; 369 *leftp = infolen - len; 370 auh.hdr_size = htonl(sizeof(auh) + infolen); 371 } else { 372 *leftp = sizeof(default_info); 373 auh.hdr_size = htonl(sizeof(auh) + *leftp); 374 } 375 *(sun_audioheader **)hdrp = &auh; 376 *lenp = sizeof auh; 377 return 0; 378 } 379 380 int 381 write_header_wav(hdrp, lenp, leftp) 382 void **hdrp; 383 size_t *lenp; 384 int *leftp; 385 { 386 /* 387 * WAV header we write looks like this: 388 * 389 * bytes purpose 390 * 0-3 "RIFF" 391 * 4-7 file length (minus 8) 392 * 8-15 "WAVEfmt " 393 * 16-19 format size 394 * 20-21 format tag 395 * 22-23 number of channels 396 * 24-27 sample rate 397 * 28-31 average bytes per second 398 * 32-33 block alignment 399 * 34-35 bits per sample 400 * 401 * then for ULAW and ALAW outputs, we have an extended chunk size 402 * and a WAV "fact" to add: 403 * 404 * 36-37 length of extension (== 0) 405 * 38-41 "fact" 406 * 42-45 fact size 407 * 46-49 number of samples written 408 * 50-53 "data" 409 * 54-57 data length 410 * 58- raw audio data 411 * 412 * for PCM outputs we have just the data remaining: 413 * 414 * 36-39 "data" 415 * 40-43 data length 416 * 44- raw audio data 417 * 418 * RIFF\^@^C^@WAVEfmt ^P^@^@^@^A^@^B^@D<AC>^@^@^P<B1>^B^@^D^@^P^@data^@^@^C^@^@^@^@^@^@^@^@^@^@ 419 */ 420 char wavheaderbuf[64], *p = wavheaderbuf; 421 char *riff = "RIFF", *wavefmt = "WAVEfmt ", *fact = "fact", *data = "data"; 422 u_int32_t filelen, fmtsz, sps, abps, factsz = 4, nsample, datalen; 423 u_int16_t fmttag, nchan, align, bps, extln = 0; 424 425 if (header_info) 426 warnx("header information not supported for WAV"); 427 *leftp = NULL; 428 429 switch (precision) { 430 case 8: 431 bps = 8; 432 break; 433 case 16: 434 bps = 16; 435 break; 436 case 32: 437 bps = 32; 438 break; 439 default: 440 { 441 static int warned = 0; 442 443 if (warned == 0) { 444 warnx("can not support precision of %d\n", precision); 445 warned = 1; 446 } 447 } 448 return (-1); 449 } 450 451 switch (encoding) { 452 case AUDIO_ENCODING_ULAW: 453 fmttag = WAVE_FORMAT_MULAW; 454 fmtsz = 18; 455 align = channels; 456 break; 457 case AUDIO_ENCODING_ALAW: 458 fmttag = WAVE_FORMAT_ALAW; 459 fmtsz = 18; 460 align = channels; 461 break; 462 /* 463 * we could try to support RIFX but it seems to be more portable 464 * to output little-endian data for WAV files. 465 * 466 * XXX signed vs unsigned matters probably! cope! 467 */ 468 case AUDIO_ENCODING_ULINEAR_BE: 469 case AUDIO_ENCODING_SLINEAR_BE: 470 if (bps == 16) 471 conv_func = swap_bytes; 472 else if (bps == 32) 473 conv_func = swap_bytes32; 474 /* FALLTHROUGH */ 475 case AUDIO_ENCODING_PCM16: 476 case AUDIO_ENCODING_ULINEAR_LE: 477 case AUDIO_ENCODING_SLINEAR_LE: 478 fmttag = WAVE_FORMAT_PCM; 479 fmtsz = 16; 480 align = channels * (bps / 8); 481 break; 482 default: 483 { 484 static int warned = 0; 485 486 if (warned == 0) { 487 warnx("can not support encoding of %s\n", wav_enc_from_val(encoding)); 488 warned = 1; 489 } 490 } 491 return (-1); 492 } 493 494 nchan = channels; 495 sps = sample_rate; 496 497 /* data length */ 498 if (outfd == STDOUT_FILENO) 499 datalen = 0; 500 else 501 datalen = total_size; 502 503 /* file length */ 504 filelen = 4 + (8 + fmtsz) + (8 + datalen); 505 if (fmttag != WAVE_FORMAT_PCM) 506 filelen += 8 + factsz; 507 508 abps = (double)align*sample_rate / (double)1 + 0.5; 509 510 nsample = (datalen / bps) / sample_rate; 511 512 /* 513 * now we've calculated the info, write it out! 514 */ 515 #define put32(x) do { \ 516 u_int32_t _f; \ 517 putle32(_f, (x)); \ 518 memcpy(p, &_f, 4); \ 519 } while (0) 520 #define put16(x) do { \ 521 u_int16_t _f; \ 522 putle16(_f, (x)); \ 523 memcpy(p, &_f, 2); \ 524 } while (0) 525 memcpy(p, riff, 4); 526 p += 4; /* 4 */ 527 put32(filelen); 528 p += 4; /* 8 */ 529 memcpy(p, wavefmt, 8); 530 p += 8; /* 16 */ 531 put32(fmtsz); 532 p += 4; /* 20 */ 533 put16(fmttag); 534 p += 2; /* 22 */ 535 put16(nchan); 536 p += 2; /* 24 */ 537 put32(sps); 538 p += 4; /* 28 */ 539 put32(abps); 540 p += 4; /* 32 */ 541 put16(align); 542 p += 2; /* 34 */ 543 put16(bps); 544 p += 2; /* 36 */ 545 /* NON PCM formats have an extended chunk; write it */ 546 if (fmttag != WAVE_FORMAT_PCM) { 547 put16(extln); 548 p += 2; /* 38 */ 549 memcpy(p, fact, 4); 550 p += 4; /* 42 */ 551 put32(factsz); 552 p += 4; /* 46 */ 553 put32(nsample); 554 p += 4; /* 50 */ 555 } 556 memcpy(p, data, 4); 557 p += 4; /* 40/54 */ 558 put32(datalen); 559 p += 4; /* 44/58 */ 560 #undef put32 561 #undef put16 562 563 *hdrp = wavheaderbuf; 564 *lenp = (p - wavheaderbuf); 565 566 return 0; 567 } 568 569 void 570 write_header() 571 { 572 struct iovec iv[3]; 573 int veclen, left, tlen; 574 void *hdr; 575 size_t hdrlen; 576 577 switch (format) { 578 case AUDIO_FORMAT_SUN: 579 if (write_header_sun(&hdr, &hdrlen, &left) != 0) 580 return; 581 break; 582 case AUDIO_FORMAT_WAV: 583 if (write_header_wav(&hdr, &hdrlen, &left) != 0) 584 return; 585 break; 586 case AUDIO_FORMAT_NONE: 587 return; 588 default: 589 errx(1, "unknown audio format"); 590 } 591 592 veclen = 0; 593 tlen = 0; 594 595 if (hdrlen != 0) { 596 iv[veclen].iov_base = hdr; 597 iv[veclen].iov_len = hdrlen; 598 tlen += iv[veclen++].iov_len; 599 } 600 if (header_info) { 601 iv[veclen].iov_base = header_info; 602 iv[veclen].iov_len = (int)strlen(header_info) + 1; 603 tlen += iv[veclen++].iov_len; 604 } 605 if (left) { 606 iv[veclen].iov_base = default_info; 607 iv[veclen].iov_len = left; 608 tlen += iv[veclen++].iov_len; 609 } 610 611 if (tlen == 0) 612 return; 613 614 if (writev(outfd, iv, veclen) != tlen) 615 err(1, "could not write audio header"); 616 } 617 618 void 619 rewrite_header() 620 { 621 622 /* can't do this here! */ 623 if (outfd == STDOUT_FILENO) 624 return; 625 626 if (lseek(outfd, SEEK_SET, 0) < 0) 627 err(1, "could not seek to start of file for header rewrite"); 628 write_header(); 629 } 630 631 void 632 usage() 633 { 634 635 fprintf(stderr, "Usage: %s [-afhqV] [options] {files ...|-}\n", 636 getprogname()); 637 fprintf(stderr, "Options:\n\t" 638 "-C audio control device\n\t" 639 "-F format\n\t" 640 "-b balance (0-63)\n\t" 641 "-c channels\n\t" 642 "-d audio device\n\t" 643 "-e encoding\n\t" 644 "-i header information\n\t" 645 "-m monitor volume\n\t" 646 "-P precision bits (4, 8, 16, 24 or 32)\n\t" 647 "-p input port\n\t" 648 "-s sample rate\n\t" 649 "-t recording time\n\t" 650 "-v volume\n"); 651 exit(EXIT_FAILURE); 652 } 653
Indexes created Fri Oct 03 02:09:57 GMT 2025