Annotation of src/usr.bin/aucat/wav.c, Revision 1.11
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"
1.11 ! ratchov 27: #ifdef DEBUG
! 28: #include "dbg.h"
! 29: #endif
1.1 ratchov 30:
1.6 ratchov 31: short wav_ulawmap[256] = {
32: -32124, -31100, -30076, -29052, -28028, -27004, -25980, -24956,
33: -23932, -22908, -21884, -20860, -19836, -18812, -17788, -16764,
34: -15996, -15484, -14972, -14460, -13948, -13436, -12924, -12412,
35: -11900, -11388, -10876, -10364, -9852, -9340, -8828, -8316,
36: -7932, -7676, -7420, -7164, -6908, -6652, -6396, -6140,
37: -5884, -5628, -5372, -5116, -4860, -4604, -4348, -4092,
38: -3900, -3772, -3644, -3516, -3388, -3260, -3132, -3004,
39: -2876, -2748, -2620, -2492, -2364, -2236, -2108, -1980,
40: -1884, -1820, -1756, -1692, -1628, -1564, -1500, -1436,
41: -1372, -1308, -1244, -1180, -1116, -1052, -988, -924,
42: -876, -844, -812, -780, -748, -716, -684, -652,
43: -620, -588, -556, -524, -492, -460, -428, -396,
44: -372, -356, -340, -324, -308, -292, -276, -260,
45: -244, -228, -212, -196, -180, -164, -148, -132,
46: -120, -112, -104, -96, -88, -80, -72, -64,
47: -56, -48, -40, -32, -24, -16, -8, 0,
48: 32124, 31100, 30076, 29052, 28028, 27004, 25980, 24956,
49: 23932, 22908, 21884, 20860, 19836, 18812, 17788, 16764,
50: 15996, 15484, 14972, 14460, 13948, 13436, 12924, 12412,
51: 11900, 11388, 10876, 10364, 9852, 9340, 8828, 8316,
52: 7932, 7676, 7420, 7164, 6908, 6652, 6396, 6140,
53: 5884, 5628, 5372, 5116, 4860, 4604, 4348, 4092,
54: 3900, 3772, 3644, 3516, 3388, 3260, 3132, 3004,
55: 2876, 2748, 2620, 2492, 2364, 2236, 2108, 1980,
56: 1884, 1820, 1756, 1692, 1628, 1564, 1500, 1436,
57: 1372, 1308, 1244, 1180, 1116, 1052, 988, 924,
58: 876, 844, 812, 780, 748, 716, 684, 652,
59: 620, 588, 556, 524, 492, 460, 428, 396,
60: 372, 356, 340, 324, 308, 292, 276, 260,
61: 244, 228, 212, 196, 180, 164, 148, 132,
62: 120, 112, 104, 96, 88, 80, 72, 64,
63: 56, 48, 40, 32, 24, 16, 8, 0
64: };
65:
66: short wav_alawmap[256] = {
67: -5504, -5248, -6016, -5760, -4480, -4224, -4992, -4736,
68: -7552, -7296, -8064, -7808, -6528, -6272, -7040, -6784,
69: -2752, -2624, -3008, -2880, -2240, -2112, -2496, -2368,
70: -3776, -3648, -4032, -3904, -3264, -3136, -3520, -3392,
71: -22016, -20992, -24064, -23040, -17920, -16896, -19968, -18944,
72: -30208, -29184, -32256, -31232, -26112, -25088, -28160, -27136,
73: -11008, -10496, -12032, -11520, -8960, -8448, -9984, -9472,
74: -15104, -14592, -16128, -15616, -13056, -12544, -14080, -13568,
75: -344, -328, -376, -360, -280, -264, -312, -296,
76: -472, -456, -504, -488, -408, -392, -440, -424,
77: -88, -72, -120, -104, -24, -8, -56, -40,
78: -216, -200, -248, -232, -152, -136, -184, -168,
79: -1376, -1312, -1504, -1440, -1120, -1056, -1248, -1184,
80: -1888, -1824, -2016, -1952, -1632, -1568, -1760, -1696,
81: -688, -656, -752, -720, -560, -528, -624, -592,
82: -944, -912, -1008, -976, -816, -784, -880, -848,
83: 5504, 5248, 6016, 5760, 4480, 4224, 4992, 4736,
84: 7552, 7296, 8064, 7808, 6528, 6272, 7040, 6784,
85: 2752, 2624, 3008, 2880, 2240, 2112, 2496, 2368,
86: 3776, 3648, 4032, 3904, 3264, 3136, 3520, 3392,
87: 22016, 20992, 24064, 23040, 17920, 16896, 19968, 18944,
88: 30208, 29184, 32256, 31232, 26112, 25088, 28160, 27136,
89: 11008, 10496, 12032, 11520, 8960, 8448, 9984, 9472,
90: 15104, 14592, 16128, 15616, 13056, 12544, 14080, 13568,
91: 344, 328, 376, 360, 280, 264, 312, 296,
92: 472, 456, 504, 488, 408, 392, 440, 424,
93: 88, 72, 120, 104, 24, 8, 56, 40,
94: 216, 200, 248, 232, 152, 136, 184, 168,
95: 1376, 1312, 1504, 1440, 1120, 1056, 1248, 1184,
96: 1888, 1824, 2016, 1952, 1632, 1568, 1760, 1696,
97: 688, 656, 752, 720, 560, 528, 624, 592,
98: 944, 912, 1008, 976, 816, 784, 880, 848
99: };
100:
1.1 ratchov 101: /*
1.7 ratchov 102: * Max data of a .wav file. The total file size must be smaller than
1.1 ratchov 103: * 2^31, and we also have to leave some space for the headers (around 40
1.7 ratchov 104: * bytes).
1.3 ratchov 105: */
1.1 ratchov 106: #define WAV_DATAMAX (0x7fff0000)
107:
108: struct fileops wav_ops = {
109: "wav",
110: sizeof(struct wav),
111: wav_close,
112: wav_read,
113: wav_write,
114: NULL, /* start */
115: NULL, /* stop */
116: pipe_nfds,
117: pipe_pollfd,
118: pipe_revents
119: };
120:
1.10 ratchov 121: int rwav_in(struct aproc *, struct abuf *);
122: int rwav_out(struct aproc *, struct abuf *);
123: void rwav_eof(struct aproc *, struct abuf *);
124: void rwav_hup(struct aproc *, struct abuf *);
125: void rwav_done(struct aproc *);
126:
127: int wwav_in(struct aproc *, struct abuf *);
128: int wwav_out(struct aproc *, struct abuf *);
129: void wwav_eof(struct aproc *, struct abuf *);
130: void wwav_hup(struct aproc *, struct abuf *);
131: void wwav_done(struct aproc *);
132:
133: struct aproc_ops rwav_ops = {
134: "rwav",
135: rwav_in,
136: rwav_out,
137: rwav_eof,
138: rwav_hup,
139: NULL, /* newin */
140: NULL, /* newout */
141: NULL, /* ipos */
142: NULL, /* opos */
143: rwav_done
144: };
145:
146: struct aproc_ops wwav_ops = {
147: "wwav",
148: wwav_in,
149: wwav_out,
150: wwav_eof,
151: wwav_hup,
152: NULL, /* newin */
153: NULL, /* newout */
154: NULL, /* ipos */
155: NULL, /* opos */
156: wwav_done
157: };
158:
159: struct aproc *
160: rwav_new(struct file *f)
161: {
162: struct aproc *p;
163:
164: p = aproc_new(&rwav_ops, f->name);
165: p->u.io.file = f;
166: f->rproc = p;
167: return p;
168: }
169:
170: int
171: rwav_in(struct aproc *p, struct abuf *ibuf_dummy)
172: {
173: struct abuf *obuf = LIST_FIRST(&p->obuflist);
174: struct file *f = p->u.io.file;
175: unsigned char *data;
176: unsigned count;
177:
178: if (ABUF_FULL(obuf) || !(f->state & FILE_ROK))
179: return 0;
180: data = abuf_wgetblk(obuf, &count, 0);
181: count = file_read(f, data, count);
182: if (count == 0)
183: return 0;
184: abuf_wcommit(obuf, count);
185: if (!abuf_flush(obuf))
186: return 0;
187: return 1;
188: }
189:
190: int
191: rwav_out(struct aproc *p, struct abuf *obuf)
192: {
193: struct file *f = p->u.io.file;
194: unsigned char *data;
195: unsigned count;
196:
197: if (f->state & FILE_RINUSE)
198: return 0;
199: if (ABUF_FULL(obuf) || !(f->state & FILE_ROK))
200: return 0;
201: data = abuf_wgetblk(obuf, &count, 0);
202: count = file_read(f, data, count);
203: if (count == 0)
204: return 0;
205: abuf_wcommit(obuf, count);
206: return 1;
207: }
208:
209: void
210: rwav_done(struct aproc *p)
211: {
212: struct file *f = p->u.io.file;
213: struct abuf *obuf;
214:
215: if (f == NULL)
216: return;
217: /*
218: * all buffers must be detached before deleting f->wproc,
219: * because otherwise it could trigger this code again
220: */
221: obuf = LIST_FIRST(&p->obuflist);
222: if (obuf)
223: abuf_eof(obuf);
224: if (f->wproc) {
225: f->rproc = NULL;
226: aproc_del(f->wproc);
227: } else
228: file_del(f);
229: p->u.io.file = NULL;
230: }
231:
232: void
233: rwav_eof(struct aproc *p, struct abuf *ibuf_dummy)
234: {
235: aproc_del(p);
236: }
237:
238: void
239: rwav_hup(struct aproc *p, struct abuf *obuf)
240: {
241: aproc_del(p);
242: }
243:
244: struct aproc *
245: wwav_new(struct file *f)
246: {
247: struct aproc *p;
248:
249: p = aproc_new(&wwav_ops, f->name);
250: p->u.io.file = f;
251: f->wproc = p;
252: return p;
253: }
254:
255: void
256: wwav_done(struct aproc *p)
257: {
258: struct file *f = p->u.io.file;
259: struct abuf *ibuf;
260:
261: if (f == NULL)
262: return;
263: /*
264: * all buffers must be detached before deleting f->rproc,
265: * because otherwise it could trigger this code again
266: */
267: ibuf = LIST_FIRST(&p->ibuflist);
268: if (ibuf)
269: abuf_hup(ibuf);
270: if (f->rproc) {
271: f->wproc = NULL;
272: aproc_del(f->rproc);
273: } else
274: file_del(f);
275: p->u.io.file = NULL;
276: }
277:
278: int
279: wwav_in(struct aproc *p, struct abuf *ibuf)
280: {
281: struct file *f = p->u.io.file;
282: unsigned char *data;
283: unsigned count;
284:
285: if (f->state & FILE_WINUSE)
286: return 0;
287: if (ABUF_EMPTY(ibuf) || !(f->state & FILE_WOK))
288: return 0;
289: data = abuf_rgetblk(ibuf, &count, 0);
290: count = file_write(f, data, count);
291: if (count == 0)
292: return 0;
293: abuf_rdiscard(ibuf, count);
294: return 1;
295: }
296:
297: int
298: wwav_out(struct aproc *p, struct abuf *obuf_dummy)
299: {
300: struct abuf *ibuf = LIST_FIRST(&p->ibuflist);
301: struct file *f = p->u.io.file;
302: unsigned char *data;
303: unsigned count;
304:
305: if (!abuf_fill(ibuf))
306: return 0;
307: if (ABUF_EMPTY(ibuf) || !(f->state & FILE_WOK))
308: return 0;
309: data = abuf_rgetblk(ibuf, &count, 0);
310: if (count == 0) {
311: /* XXX: this can't happen, right ? */
312: return 0;
313: }
314: count = file_write(f, data, count);
315: if (count == 0)
316: return 0;
317: abuf_rdiscard(ibuf, count);
318: return 1;
319: }
320:
321: void
322: wwav_eof(struct aproc *p, struct abuf *ibuf)
323: {
324: aproc_del(p);
325: }
326:
327: void
328: wwav_hup(struct aproc *p, struct abuf *obuf_dummy)
329: {
330: aproc_del(p);
331: }
332:
1.1 ratchov 333: struct wav *
1.10 ratchov 334: wav_new_in(struct fileops *ops, char *name, unsigned hdr,
335: struct aparams *par, unsigned xrun, unsigned volctl)
1.1 ratchov 336: {
1.10 ratchov 337: int fd;
1.1 ratchov 338: struct wav *f;
1.10 ratchov 339: struct aproc *p;
340: struct abuf *buf;
341: unsigned nfr;
342:
343: if (name != NULL) {
344: fd = open(name, O_RDONLY | O_NONBLOCK, 0666);
345: if (fd < 0) {
346: perror(name);
347: return NULL;
348: }
349: } else {
350: name = "stdin";
351: fd = STDIN_FILENO;
352: if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
353: perror(name);
354: }
1.1 ratchov 355: f = (struct wav *)pipe_new(ops, fd, name);
1.4 ratchov 356: if (f == NULL)
357: return NULL;
1.1 ratchov 358: if (hdr == HDR_WAV) {
1.10 ratchov 359: if (!wav_readhdr(f->pipe.fd, par, &f->rbytes, &f->map)) {
360: file_del((struct file *)f);
361: return NULL;
362: }
1.1 ratchov 363: f->hpar = *par;
1.6 ratchov 364: } else {
1.1 ratchov 365: f->rbytes = -1;
1.6 ratchov 366: f->map = NULL;
367: }
1.1 ratchov 368: f->hdr = 0;
1.10 ratchov 369: nfr = dev_bufsz * par->rate / dev_rate;
370: buf = abuf_new(nfr, par);
371: p = rwav_new((struct file *)f);
372: aproc_setout(p, buf);
373: abuf_fill(buf); /* XXX: move this in dev_attach() ? */
374: dev_attach(name, buf, par, xrun, NULL, NULL, 0, ADATA_UNIT);
375: dev_setvol(buf, MIDI_TO_ADATA(volctl));
1.1 ratchov 376: return f;
377: }
378:
379: struct wav *
1.10 ratchov 380: wav_new_out(struct fileops *ops, char *name, unsigned hdr,
381: struct aparams *par, unsigned xrun)
1.1 ratchov 382: {
1.10 ratchov 383: int fd;
1.1 ratchov 384: struct wav *f;
1.10 ratchov 385: struct aproc *p;
386: struct abuf *buf;
387: unsigned nfr;
388:
389: if (name == NULL) {
390: name = "stdout";
391: fd = STDOUT_FILENO;
392: if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
393: perror(name);
394: } else {
395: fd = open(name,
396: O_WRONLY | O_TRUNC | O_CREAT | O_NONBLOCK, 0666);
397: if (fd < 0) {
398: perror(name);
399: return NULL;
400: }
401: }
1.1 ratchov 402: f = (struct wav *)pipe_new(ops, fd, name);
1.4 ratchov 403: if (f == NULL)
404: return NULL;
1.1 ratchov 405: if (hdr == HDR_WAV) {
1.2 ratchov 406: par->le = 1;
1.3 ratchov 407: par->sig = (par->bits <= 8) ? 0 : 1;
1.2 ratchov 408: par->bps = (par->bits + 7) / 8;
1.10 ratchov 409: if (!wav_writehdr(f->pipe.fd, par)) {
410: file_del((struct file *)f);
411: return NULL;
412: }
1.1 ratchov 413: f->hpar = *par;
414: f->wbytes = WAV_DATAMAX;
415: } else
416: f->wbytes = -1;
417: f->hdr = hdr;
1.10 ratchov 418: nfr = dev_bufsz * par->rate / dev_rate;
419: p = wwav_new((struct file *)f);
420: buf = abuf_new(nfr, par);
421: aproc_setin(p, buf);
422: dev_attach(name, NULL, NULL, 0, buf, par, xrun, 0);
1.1 ratchov 423: return f;
424: }
425:
1.6 ratchov 426: void
427: wav_conv(unsigned char *data, unsigned count, short *map)
428: {
429: unsigned i;
430: unsigned char *iptr;
431: short *optr;
432:
433: iptr = data + count;
434: optr = (short *)data + count;
435: for (i = count; i > 0; i--) {
436: --optr;
437: --iptr;
438: *optr = map[*iptr];
439: }
440: }
441:
1.1 ratchov 442: unsigned
443: wav_read(struct file *file, unsigned char *data, unsigned count)
444: {
445: struct wav *f = (struct wav *)file;
446: unsigned n;
447:
1.6 ratchov 448: if (f->map)
449: count /= sizeof(short);
1.1 ratchov 450: if (f->rbytes >= 0 && count > f->rbytes) {
451: count = f->rbytes; /* file->rbytes fits in count */
452: if (count == 0) {
1.11 ! ratchov 453: #ifdef DEBUG
! 454: if (debug_level >= 3) {
! 455: file_dbg(&f->pipe.file);
! 456: dbg_puts(": read complete\n");
! 457: }
! 458: #endif
1.1 ratchov 459: file_eof(&f->pipe.file);
460: return 0;
461: }
462: }
463: n = pipe_read(file, data, count);
1.8 jakemsr 464: if (n == 0)
465: return 0;
1.1 ratchov 466: if (f->rbytes >= 0)
467: f->rbytes -= n;
1.6 ratchov 468: if (f->map) {
469: wav_conv(data, n, f->map);
470: n *= sizeof(short);
471: }
1.1 ratchov 472: return n;
473: }
474:
475: unsigned
476: wav_write(struct file *file, unsigned char *data, unsigned count)
477: {
478: struct wav *f = (struct wav *)file;
479: unsigned n;
1.3 ratchov 480:
1.1 ratchov 481: if (f->wbytes >= 0 && count > f->wbytes) {
482: count = f->wbytes; /* wbytes fits in count */
483: if (count == 0) {
1.11 ! ratchov 484: #ifdef DEBUG
! 485: if (debug_level >= 3) {
! 486: file_dbg(&f->pipe.file);
! 487: dbg_puts(": write complete\n");
! 488: }
! 489: #endif
1.1 ratchov 490: file_hup(&f->pipe.file);
491: return 0;
492: }
493: }
494: n = pipe_write(file, data, count);
495: if (f->wbytes >= 0)
496: f->wbytes -= n;
497: return n;
498: }
499:
500: void
501: wav_close(struct file *file)
502: {
503: struct wav *f = (struct wav *)file;
504:
505: if (f->hdr == HDR_WAV)
506: wav_writehdr(f->pipe.fd, &f->hpar);
507: pipe_close(file);
508: }
1.10 ratchov 509:
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