Annotation of src/usr.bin/aucat/wav.c, Revision 1.10
1.7 ratchov 1: /*
2: * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
3: *
4: * Permission to use, copy, modify, and distribute this software for any
5: * purpose with or without fee is hereby granted, provided that the above
6: * copyright notice and this permission notice appear in all copies.
7: *
8: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15: */
16:
1.1 ratchov 17: #include <stdlib.h>
1.10 ! ratchov 18: #include <stdio.h>
! 19: #include <fcntl.h>
! 20: #include <unistd.h>
1.1 ratchov 21:
1.10 ! ratchov 22: #include "abuf.h"
! 23: #include "aproc.h"
1.1 ratchov 24: #include "conf.h"
1.10 ! ratchov 25: #include "dev.h"
1.1 ratchov 26: #include "wav.h"
27:
1.6 ratchov 28: short wav_ulawmap[256] = {
29: -32124, -31100, -30076, -29052, -28028, -27004, -25980, -24956,
30: -23932, -22908, -21884, -20860, -19836, -18812, -17788, -16764,
31: -15996, -15484, -14972, -14460, -13948, -13436, -12924, -12412,
32: -11900, -11388, -10876, -10364, -9852, -9340, -8828, -8316,
33: -7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
34: -5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
35: -3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
36: -2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
37: -1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
38: -1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
39: -876, -844, -812, -780, -748, -716, -684, -652,
40: -620, -588, -556, -524, -492, -460, -428, -396,
41: -372, -356, -340, -324, -308, -292, -276, -260,
42: -244, -228, -212, -196, -180, -164, -148, -132,
43: -120, -112, -104, -96, -88, -80, -72, -64,
44: -56, -48, -40, -32, -24, -16, -8, 0,
45: 32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
46: 23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
47: 15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
48: 11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
49: 7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
50: 5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
51: 3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
52: 2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
53: 1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
54: 1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
55: 876, 844, 812, 780, 748, 716, 684, 652,
56: 620, 588, 556, 524, 492, 460, 428, 396,
57: 372, 356, 340, 324, 308, 292, 276, 260,
58: 244, 228, 212, 196, 180, 164, 148, 132,
59: 120, 112, 104, 96, 88, 80, 72, 64,
60: 56, 48, 40, 32, 24, 16, 8, 0
61: };
62:
63: short wav_alawmap[256] = {
64: -5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
65: -7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
66: -2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
67: -3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
68: -22016, -20992, -24064, -23040, -17920, -16896, -19968, -18944,
69: -30208, -29184, -32256, -31232, -26112, -25088, -28160, -27136,
70: -11008, -10496, -12032, -11520, -8960, -8448, -9984, -9472,
71: -15104, -14592, -16128, -15616, -13056, -12544, -14080, -13568,
72: -344, -328, -376, -360, -280, -264, -312, -296,
73: -472, -456, -504, -488, -408, -392, -440, -424,
74: -88, -72, -120, -104, -24, -8, -56, -40,
75: -216, -200, -248, -232, -152, -136, -184, -168,
76: -1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
77: -1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
78: -688, -656, -752, -720, -560, -528, -624, -592,
79: -944, -912, -1008, -976, -816, -784, -880, -848,
80: 5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
81: 7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
82: 2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
83: 3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
84: 22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
85: 30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
86: 11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
87: 15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
88: 344, 328, 376, 360, 280, 264, 312, 296,
89: 472, 456, 504, 488, 408, 392, 440, 424,
90: 88, 72, 120, 104, 24, 8, 56, 40,
91: 216, 200, 248, 232, 152, 136, 184, 168,
92: 1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
93: 1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
94: 688, 656, 752, 720, 560, 528, 624, 592,
95: 944, 912, 1008, 976, 816, 784, 880, 848
96: };
97:
1.1 ratchov 98: /*
1.7 ratchov 99: * Max data of a .wav file. The total file size must be smaller than
1.1 ratchov 100: * 2^31, and we also have to leave some space for the headers (around 40
1.7 ratchov 101: * bytes).
1.3 ratchov 102: */
1.1 ratchov 103: #define WAV_DATAMAX (0x7fff0000)
104:
105: struct fileops wav_ops = {
106: "wav",
107: sizeof(struct wav),
108: wav_close,
109: wav_read,
110: wav_write,
111: NULL, /* start */
112: NULL, /* stop */
113: pipe_nfds,
114: pipe_pollfd,
115: pipe_revents
116: };
117:
1.10 ! ratchov 118: int rwav_in(struct aproc *, struct abuf *);
! 119: int rwav_out(struct aproc *, struct abuf *);
! 120: void rwav_eof(struct aproc *, struct abuf *);
! 121: void rwav_hup(struct aproc *, struct abuf *);
! 122: void rwav_done(struct aproc *);
! 123:
! 124: int wwav_in(struct aproc *, struct abuf *);
! 125: int wwav_out(struct aproc *, struct abuf *);
! 126: void wwav_eof(struct aproc *, struct abuf *);
! 127: void wwav_hup(struct aproc *, struct abuf *);
! 128: void wwav_done(struct aproc *);
! 129:
! 130: struct aproc_ops rwav_ops = {
! 131: "rwav",
! 132: rwav_in,
! 133: rwav_out,
! 134: rwav_eof,
! 135: rwav_hup,
! 136: NULL, /* newin */
! 137: NULL, /* newout */
! 138: NULL, /* ipos */
! 139: NULL, /* opos */
! 140: rwav_done
! 141: };
! 142:
! 143: struct aproc_ops wwav_ops = {
! 144: "wwav",
! 145: wwav_in,
! 146: wwav_out,
! 147: wwav_eof,
! 148: wwav_hup,
! 149: NULL, /* newin */
! 150: NULL, /* newout */
! 151: NULL, /* ipos */
! 152: NULL, /* opos */
! 153: wwav_done
! 154: };
! 155:
! 156: struct aproc *
! 157: rwav_new(struct file *f)
! 158: {
! 159: struct aproc *p;
! 160:
! 161: p = aproc_new(&rwav_ops, f->name);
! 162: p->u.io.file = f;
! 163: f->rproc = p;
! 164: return p;
! 165: }
! 166:
! 167: int
! 168: rwav_in(struct aproc *p, struct abuf *ibuf_dummy)
! 169: {
! 170: struct abuf *obuf = LIST_FIRST(&p->obuflist);
! 171: struct file *f = p->u.io.file;
! 172: unsigned char *data;
! 173: unsigned count;
! 174:
! 175: if (ABUF_FULL(obuf) || !(f->state & FILE_ROK))
! 176: return 0;
! 177: data = abuf_wgetblk(obuf, &count, 0);
! 178: count = file_read(f, data, count);
! 179: if (count == 0)
! 180: return 0;
! 181: abuf_wcommit(obuf, count);
! 182: if (!abuf_flush(obuf))
! 183: return 0;
! 184: return 1;
! 185: }
! 186:
! 187: int
! 188: rwav_out(struct aproc *p, struct abuf *obuf)
! 189: {
! 190: struct file *f = p->u.io.file;
! 191: unsigned char *data;
! 192: unsigned count;
! 193:
! 194: if (f->state & FILE_RINUSE)
! 195: return 0;
! 196: if (ABUF_FULL(obuf) || !(f->state & FILE_ROK))
! 197: return 0;
! 198: data = abuf_wgetblk(obuf, &count, 0);
! 199: count = file_read(f, data, count);
! 200: if (count == 0)
! 201: return 0;
! 202: abuf_wcommit(obuf, count);
! 203: return 1;
! 204: }
! 205:
! 206: void
! 207: rwav_done(struct aproc *p)
! 208: {
! 209: struct file *f = p->u.io.file;
! 210: struct abuf *obuf;
! 211:
! 212: if (f == NULL)
! 213: return;
! 214: /*
! 215: * all buffers must be detached before deleting f->wproc,
! 216: * because otherwise it could trigger this code again
! 217: */
! 218: obuf = LIST_FIRST(&p->obuflist);
! 219: if (obuf)
! 220: abuf_eof(obuf);
! 221: if (f->wproc) {
! 222: f->rproc = NULL;
! 223: aproc_del(f->wproc);
! 224: } else
! 225: file_del(f);
! 226: p->u.io.file = NULL;
! 227: }
! 228:
! 229: void
! 230: rwav_eof(struct aproc *p, struct abuf *ibuf_dummy)
! 231: {
! 232: aproc_del(p);
! 233: }
! 234:
! 235: void
! 236: rwav_hup(struct aproc *p, struct abuf *obuf)
! 237: {
! 238: aproc_del(p);
! 239: }
! 240:
! 241: struct aproc *
! 242: wwav_new(struct file *f)
! 243: {
! 244: struct aproc *p;
! 245:
! 246: p = aproc_new(&wwav_ops, f->name);
! 247: p->u.io.file = f;
! 248: f->wproc = p;
! 249: return p;
! 250: }
! 251:
! 252: void
! 253: wwav_done(struct aproc *p)
! 254: {
! 255: struct file *f = p->u.io.file;
! 256: struct abuf *ibuf;
! 257:
! 258: if (f == NULL)
! 259: return;
! 260: /*
! 261: * all buffers must be detached before deleting f->rproc,
! 262: * because otherwise it could trigger this code again
! 263: */
! 264: ibuf = LIST_FIRST(&p->ibuflist);
! 265: if (ibuf)
! 266: abuf_hup(ibuf);
! 267: if (f->rproc) {
! 268: f->wproc = NULL;
! 269: aproc_del(f->rproc);
! 270: } else
! 271: file_del(f);
! 272: p->u.io.file = NULL;
! 273: }
! 274:
! 275: int
! 276: wwav_in(struct aproc *p, struct abuf *ibuf)
! 277: {
! 278: struct file *f = p->u.io.file;
! 279: unsigned char *data;
! 280: unsigned count;
! 281:
! 282: if (f->state & FILE_WINUSE)
! 283: return 0;
! 284: if (ABUF_EMPTY(ibuf) || !(f->state & FILE_WOK))
! 285: return 0;
! 286: data = abuf_rgetblk(ibuf, &count, 0);
! 287: count = file_write(f, data, count);
! 288: if (count == 0)
! 289: return 0;
! 290: abuf_rdiscard(ibuf, count);
! 291: return 1;
! 292: }
! 293:
! 294: int
! 295: wwav_out(struct aproc *p, struct abuf *obuf_dummy)
! 296: {
! 297: struct abuf *ibuf = LIST_FIRST(&p->ibuflist);
! 298: struct file *f = p->u.io.file;
! 299: unsigned char *data;
! 300: unsigned count;
! 301:
! 302: if (!abuf_fill(ibuf))
! 303: return 0;
! 304: if (ABUF_EMPTY(ibuf) || !(f->state & FILE_WOK))
! 305: return 0;
! 306: data = abuf_rgetblk(ibuf, &count, 0);
! 307: if (count == 0) {
! 308: /* XXX: this can't happen, right ? */
! 309: return 0;
! 310: }
! 311: count = file_write(f, data, count);
! 312: if (count == 0)
! 313: return 0;
! 314: abuf_rdiscard(ibuf, count);
! 315: return 1;
! 316: }
! 317:
! 318: void
! 319: wwav_eof(struct aproc *p, struct abuf *ibuf)
! 320: {
! 321: aproc_del(p);
! 322: }
! 323:
! 324: void
! 325: wwav_hup(struct aproc *p, struct abuf *obuf_dummy)
! 326: {
! 327: aproc_del(p);
! 328: }
! 329:
1.1 ratchov 330: struct wav *
1.10 ! ratchov 331: wav_new_in(struct fileops *ops, char *name, unsigned hdr,
! 332: struct aparams *par, unsigned xrun, unsigned volctl)
1.1 ratchov 333: {
1.10 ! ratchov 334: int fd;
1.1 ratchov 335: struct wav *f;
1.10 ! ratchov 336: struct aproc *p;
! 337: struct abuf *buf;
! 338: unsigned nfr;
! 339:
! 340: if (name != NULL) {
! 341: fd = open(name, O_RDONLY | O_NONBLOCK, 0666);
! 342: if (fd < 0) {
! 343: perror(name);
! 344: return NULL;
! 345: }
! 346: } else {
! 347: name = "stdin";
! 348: fd = STDIN_FILENO;
! 349: if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
! 350: perror(name);
! 351: }
1.1 ratchov 352: f = (struct wav *)pipe_new(ops, fd, name);
1.4 ratchov 353: if (f == NULL)
354: return NULL;
1.1 ratchov 355: if (hdr == HDR_WAV) {
1.10 ! ratchov 356: if (!wav_readhdr(f->pipe.fd, par, &f->rbytes, &f->map)) {
! 357: file_del((struct file *)f);
! 358: return NULL;
! 359: }
1.1 ratchov 360: f->hpar = *par;
1.6 ratchov 361: } else {
1.1 ratchov 362: f->rbytes = -1;
1.6 ratchov 363: f->map = NULL;
364: }
1.1 ratchov 365: f->hdr = 0;
1.10 ! ratchov 366: nfr = dev_bufsz * par->rate / dev_rate;
! 367: buf = abuf_new(nfr, par);
! 368: p = rwav_new((struct file *)f);
! 369: aproc_setout(p, buf);
! 370: abuf_fill(buf); /* XXX: move this in dev_attach() ? */
! 371: dev_attach(name, buf, par, xrun, NULL, NULL, 0, ADATA_UNIT);
! 372: dev_setvol(buf, MIDI_TO_ADATA(volctl));
1.1 ratchov 373: return f;
374: }
375:
376: struct wav *
1.10 ! ratchov 377: wav_new_out(struct fileops *ops, char *name, unsigned hdr,
! 378: struct aparams *par, unsigned xrun)
1.1 ratchov 379: {
1.10 ! ratchov 380: int fd;
1.1 ratchov 381: struct wav *f;
1.10 ! ratchov 382: struct aproc *p;
! 383: struct abuf *buf;
! 384: unsigned nfr;
! 385:
! 386: if (name == NULL) {
! 387: name = "stdout";
! 388: fd = STDOUT_FILENO;
! 389: if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
! 390: perror(name);
! 391: } else {
! 392: fd = open(name,
! 393: O_WRONLY | O_TRUNC | O_CREAT | O_NONBLOCK, 0666);
! 394: if (fd < 0) {
! 395: perror(name);
! 396: return NULL;
! 397: }
! 398: }
1.1 ratchov 399: f = (struct wav *)pipe_new(ops, fd, name);
1.4 ratchov 400: if (f == NULL)
401: return NULL;
1.1 ratchov 402: if (hdr == HDR_WAV) {
1.2 ratchov 403: par->le = 1;
1.3 ratchov 404: par->sig = (par->bits <= 8) ? 0 : 1;
1.2 ratchov 405: par->bps = (par->bits + 7) / 8;
1.10 ! ratchov 406: if (!wav_writehdr(f->pipe.fd, par)) {
! 407: file_del((struct file *)f);
! 408: return NULL;
! 409: }
1.1 ratchov 410: f->hpar = *par;
411: f->wbytes = WAV_DATAMAX;
412: } else
413: f->wbytes = -1;
414: f->hdr = hdr;
1.10 ! ratchov 415: nfr = dev_bufsz * par->rate / dev_rate;
! 416: p = wwav_new((struct file *)f);
! 417: buf = abuf_new(nfr, par);
! 418: aproc_setin(p, buf);
! 419: dev_attach(name, NULL, NULL, 0, buf, par, xrun, 0);
1.1 ratchov 420: return f;
421: }
422:
1.6 ratchov 423: void
424: wav_conv(unsigned char *data, unsigned count, short *map)
425: {
426: unsigned i;
427: unsigned char *iptr;
428: short *optr;
429:
430: iptr = data + count;
431: optr = (short *)data + count;
432: for (i = count; i > 0; i--) {
433: --optr;
434: --iptr;
435: *optr = map[*iptr];
436: }
437: }
438:
1.1 ratchov 439: unsigned
440: wav_read(struct file *file, unsigned char *data, unsigned count)
441: {
442: struct wav *f = (struct wav *)file;
443: unsigned n;
444:
1.6 ratchov 445: if (f->map)
446: count /= sizeof(short);
1.1 ratchov 447: if (f->rbytes >= 0 && count > f->rbytes) {
448: count = f->rbytes; /* file->rbytes fits in count */
449: if (count == 0) {
450: file_eof(&f->pipe.file);
451: return 0;
452: }
453: }
454: n = pipe_read(file, data, count);
1.8 jakemsr 455: if (n == 0)
456: return 0;
1.1 ratchov 457: if (f->rbytes >= 0)
458: f->rbytes -= n;
1.6 ratchov 459: if (f->map) {
460: wav_conv(data, n, f->map);
461: n *= sizeof(short);
462: }
1.1 ratchov 463: return n;
464: }
465:
466: unsigned
467: wav_write(struct file *file, unsigned char *data, unsigned count)
468: {
469: struct wav *f = (struct wav *)file;
470: unsigned n;
1.3 ratchov 471:
1.1 ratchov 472: if (f->wbytes >= 0 && count > f->wbytes) {
473: count = f->wbytes; /* wbytes fits in count */
474: if (count == 0) {
475: file_hup(&f->pipe.file);
476: return 0;
477: }
478: }
479: n = pipe_write(file, data, count);
480: if (f->wbytes >= 0)
481: f->wbytes -= n;
482: return n;
483: }
484:
485: void
486: wav_close(struct file *file)
487: {
488: struct wav *f = (struct wav *)file;
489:
490: if (f->hdr == HDR_WAV)
491: wav_writehdr(f->pipe.fd, &f->hpar);
492: pipe_close(file);
493: }
1.10 ! ratchov 494:
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