]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * QEMU OSS audio driver | |
3 | * | |
4 | * Copyright (c) 2003-2005 Vassili Karpov (malc) | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | #include <stdlib.h> | |
25 | #include <sys/mman.h> | |
26 | #include <sys/types.h> | |
27 | #include <sys/ioctl.h> | |
28 | #include <sys/soundcard.h> | |
29 | #include "qemu-common.h" | |
30 | #include "qemu/main-loop.h" | |
31 | #include "qemu/host-utils.h" | |
32 | #include "audio.h" | |
33 | ||
34 | #define AUDIO_CAP "oss" | |
35 | #include "audio_int.h" | |
36 | ||
37 | #if defined OSS_GETVERSION && defined SNDCTL_DSP_POLICY | |
38 | #define USE_DSP_POLICY | |
39 | #endif | |
40 | ||
41 | typedef struct OSSVoiceOut { | |
42 | HWVoiceOut hw; | |
43 | void *pcm_buf; | |
44 | int fd; | |
45 | int wpos; | |
46 | int nfrags; | |
47 | int fragsize; | |
48 | int mmapped; | |
49 | int pending; | |
50 | } OSSVoiceOut; | |
51 | ||
52 | typedef struct OSSVoiceIn { | |
53 | HWVoiceIn hw; | |
54 | void *pcm_buf; | |
55 | int fd; | |
56 | int nfrags; | |
57 | int fragsize; | |
58 | } OSSVoiceIn; | |
59 | ||
60 | static struct { | |
61 | int try_mmap; | |
62 | int nfrags; | |
63 | int fragsize; | |
64 | const char *devpath_out; | |
65 | const char *devpath_in; | |
66 | int debug; | |
67 | int exclusive; | |
68 | int policy; | |
69 | } conf = { | |
70 | .try_mmap = 0, | |
71 | .nfrags = 4, | |
72 | .fragsize = 4096, | |
73 | .devpath_out = "/dev/dsp", | |
74 | .devpath_in = "/dev/dsp", | |
75 | .debug = 0, | |
76 | .exclusive = 0, | |
77 | .policy = 5 | |
78 | }; | |
79 | ||
80 | struct oss_params { | |
81 | int freq; | |
82 | audfmt_e fmt; | |
83 | int nchannels; | |
84 | int nfrags; | |
85 | int fragsize; | |
86 | }; | |
87 | ||
88 | static void GCC_FMT_ATTR (2, 3) oss_logerr (int err, const char *fmt, ...) | |
89 | { | |
90 | va_list ap; | |
91 | ||
92 | va_start (ap, fmt); | |
93 | AUD_vlog (AUDIO_CAP, fmt, ap); | |
94 | va_end (ap); | |
95 | ||
96 | AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err)); | |
97 | } | |
98 | ||
99 | static void GCC_FMT_ATTR (3, 4) oss_logerr2 ( | |
100 | int err, | |
101 | const char *typ, | |
102 | const char *fmt, | |
103 | ... | |
104 | ) | |
105 | { | |
106 | va_list ap; | |
107 | ||
108 | AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ); | |
109 | ||
110 | va_start (ap, fmt); | |
111 | AUD_vlog (AUDIO_CAP, fmt, ap); | |
112 | va_end (ap); | |
113 | ||
114 | AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err)); | |
115 | } | |
116 | ||
117 | static void oss_anal_close (int *fdp) | |
118 | { | |
119 | int err; | |
120 | ||
121 | qemu_set_fd_handler (*fdp, NULL, NULL, NULL); | |
122 | err = close (*fdp); | |
123 | if (err) { | |
124 | oss_logerr (errno, "Failed to close file(fd=%d)\n", *fdp); | |
125 | } | |
126 | *fdp = -1; | |
127 | } | |
128 | ||
129 | static void oss_helper_poll_out (void *opaque) | |
130 | { | |
131 | (void) opaque; | |
132 | audio_run ("oss_poll_out"); | |
133 | } | |
134 | ||
135 | static void oss_helper_poll_in (void *opaque) | |
136 | { | |
137 | (void) opaque; | |
138 | audio_run ("oss_poll_in"); | |
139 | } | |
140 | ||
141 | static int oss_poll_out (HWVoiceOut *hw) | |
142 | { | |
143 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; | |
144 | ||
145 | return qemu_set_fd_handler (oss->fd, NULL, oss_helper_poll_out, NULL); | |
146 | } | |
147 | ||
148 | static int oss_poll_in (HWVoiceIn *hw) | |
149 | { | |
150 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; | |
151 | ||
152 | return qemu_set_fd_handler (oss->fd, oss_helper_poll_in, NULL, NULL); | |
153 | } | |
154 | ||
155 | static int oss_write (SWVoiceOut *sw, void *buf, int len) | |
156 | { | |
157 | return audio_pcm_sw_write (sw, buf, len); | |
158 | } | |
159 | ||
160 | static int aud_to_ossfmt (audfmt_e fmt, int endianness) | |
161 | { | |
162 | switch (fmt) { | |
163 | case AUD_FMT_S8: | |
164 | return AFMT_S8; | |
165 | ||
166 | case AUD_FMT_U8: | |
167 | return AFMT_U8; | |
168 | ||
169 | case AUD_FMT_S16: | |
170 | if (endianness) { | |
171 | return AFMT_S16_BE; | |
172 | } | |
173 | else { | |
174 | return AFMT_S16_LE; | |
175 | } | |
176 | ||
177 | case AUD_FMT_U16: | |
178 | if (endianness) { | |
179 | return AFMT_U16_BE; | |
180 | } | |
181 | else { | |
182 | return AFMT_U16_LE; | |
183 | } | |
184 | ||
185 | default: | |
186 | dolog ("Internal logic error: Bad audio format %d\n", fmt); | |
187 | #ifdef DEBUG_AUDIO | |
188 | abort (); | |
189 | #endif | |
190 | return AFMT_U8; | |
191 | } | |
192 | } | |
193 | ||
194 | static int oss_to_audfmt (int ossfmt, audfmt_e *fmt, int *endianness) | |
195 | { | |
196 | switch (ossfmt) { | |
197 | case AFMT_S8: | |
198 | *endianness = 0; | |
199 | *fmt = AUD_FMT_S8; | |
200 | break; | |
201 | ||
202 | case AFMT_U8: | |
203 | *endianness = 0; | |
204 | *fmt = AUD_FMT_U8; | |
205 | break; | |
206 | ||
207 | case AFMT_S16_LE: | |
208 | *endianness = 0; | |
209 | *fmt = AUD_FMT_S16; | |
210 | break; | |
211 | ||
212 | case AFMT_U16_LE: | |
213 | *endianness = 0; | |
214 | *fmt = AUD_FMT_U16; | |
215 | break; | |
216 | ||
217 | case AFMT_S16_BE: | |
218 | *endianness = 1; | |
219 | *fmt = AUD_FMT_S16; | |
220 | break; | |
221 | ||
222 | case AFMT_U16_BE: | |
223 | *endianness = 1; | |
224 | *fmt = AUD_FMT_U16; | |
225 | break; | |
226 | ||
227 | default: | |
228 | dolog ("Unrecognized audio format %d\n", ossfmt); | |
229 | return -1; | |
230 | } | |
231 | ||
232 | return 0; | |
233 | } | |
234 | ||
235 | #if defined DEBUG_MISMATCHES || defined DEBUG | |
236 | static void oss_dump_info (struct oss_params *req, struct oss_params *obt) | |
237 | { | |
238 | dolog ("parameter | requested value | obtained value\n"); | |
239 | dolog ("format | %10d | %10d\n", req->fmt, obt->fmt); | |
240 | dolog ("channels | %10d | %10d\n", | |
241 | req->nchannels, obt->nchannels); | |
242 | dolog ("frequency | %10d | %10d\n", req->freq, obt->freq); | |
243 | dolog ("nfrags | %10d | %10d\n", req->nfrags, obt->nfrags); | |
244 | dolog ("fragsize | %10d | %10d\n", | |
245 | req->fragsize, obt->fragsize); | |
246 | } | |
247 | #endif | |
248 | ||
249 | #ifdef USE_DSP_POLICY | |
250 | static int oss_get_version (int fd, int *version, const char *typ) | |
251 | { | |
252 | if (ioctl (fd, OSS_GETVERSION, &version)) { | |
253 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) | |
254 | /* | |
255 | * Looks like atm (20100109) FreeBSD knows OSS_GETVERSION | |
256 | * since 7.x, but currently only on the mixer device (or in | |
257 | * the Linuxolator), and in the native version that part of | |
258 | * the code is in fact never reached so the ioctl fails anyway. | |
259 | * Until this is fixed, just check the errno and if its what | |
260 | * FreeBSD's sound drivers return atm assume they are new enough. | |
261 | */ | |
262 | if (errno == EINVAL) { | |
263 | *version = 0x040000; | |
264 | return 0; | |
265 | } | |
266 | #endif | |
267 | oss_logerr2 (errno, typ, "Failed to get OSS version\n"); | |
268 | return -1; | |
269 | } | |
270 | return 0; | |
271 | } | |
272 | #endif | |
273 | ||
274 | static int oss_open (int in, struct oss_params *req, | |
275 | struct oss_params *obt, int *pfd) | |
276 | { | |
277 | int fd; | |
278 | int oflags = conf.exclusive ? O_EXCL : 0; | |
279 | audio_buf_info abinfo; | |
280 | int fmt, freq, nchannels; | |
281 | int setfragment = 1; | |
282 | const char *dspname = in ? conf.devpath_in : conf.devpath_out; | |
283 | const char *typ = in ? "ADC" : "DAC"; | |
284 | ||
285 | /* Kludge needed to have working mmap on Linux */ | |
286 | oflags |= conf.try_mmap ? O_RDWR : (in ? O_RDONLY : O_WRONLY); | |
287 | ||
288 | fd = open (dspname, oflags | O_NONBLOCK); | |
289 | if (-1 == fd) { | |
290 | oss_logerr2 (errno, typ, "Failed to open `%s'\n", dspname); | |
291 | return -1; | |
292 | } | |
293 | ||
294 | freq = req->freq; | |
295 | nchannels = req->nchannels; | |
296 | fmt = req->fmt; | |
297 | ||
298 | if (ioctl (fd, SNDCTL_DSP_SAMPLESIZE, &fmt)) { | |
299 | oss_logerr2 (errno, typ, "Failed to set sample size %d\n", req->fmt); | |
300 | goto err; | |
301 | } | |
302 | ||
303 | if (ioctl (fd, SNDCTL_DSP_CHANNELS, &nchannels)) { | |
304 | oss_logerr2 (errno, typ, "Failed to set number of channels %d\n", | |
305 | req->nchannels); | |
306 | goto err; | |
307 | } | |
308 | ||
309 | if (ioctl (fd, SNDCTL_DSP_SPEED, &freq)) { | |
310 | oss_logerr2 (errno, typ, "Failed to set frequency %d\n", req->freq); | |
311 | goto err; | |
312 | } | |
313 | ||
314 | if (ioctl (fd, SNDCTL_DSP_NONBLOCK, NULL)) { | |
315 | oss_logerr2 (errno, typ, "Failed to set non-blocking mode\n"); | |
316 | goto err; | |
317 | } | |
318 | ||
319 | #ifdef USE_DSP_POLICY | |
320 | if (conf.policy >= 0) { | |
321 | int version; | |
322 | ||
323 | if (!oss_get_version (fd, &version, typ)) { | |
324 | if (conf.debug) { | |
325 | dolog ("OSS version = %#x\n", version); | |
326 | } | |
327 | ||
328 | if (version >= 0x040000) { | |
329 | int policy = conf.policy; | |
330 | if (ioctl (fd, SNDCTL_DSP_POLICY, &policy)) { | |
331 | oss_logerr2 (errno, typ, | |
332 | "Failed to set timing policy to %d\n", | |
333 | conf.policy); | |
334 | goto err; | |
335 | } | |
336 | setfragment = 0; | |
337 | } | |
338 | } | |
339 | } | |
340 | #endif | |
341 | ||
342 | if (setfragment) { | |
343 | int mmmmssss = (req->nfrags << 16) | ctz32 (req->fragsize); | |
344 | if (ioctl (fd, SNDCTL_DSP_SETFRAGMENT, &mmmmssss)) { | |
345 | oss_logerr2 (errno, typ, "Failed to set buffer length (%d, %d)\n", | |
346 | req->nfrags, req->fragsize); | |
347 | goto err; | |
348 | } | |
349 | } | |
350 | ||
351 | if (ioctl (fd, in ? SNDCTL_DSP_GETISPACE : SNDCTL_DSP_GETOSPACE, &abinfo)) { | |
352 | oss_logerr2 (errno, typ, "Failed to get buffer length\n"); | |
353 | goto err; | |
354 | } | |
355 | ||
356 | if (!abinfo.fragstotal || !abinfo.fragsize) { | |
357 | AUD_log (AUDIO_CAP, "Returned bogus buffer information(%d, %d) for %s\n", | |
358 | abinfo.fragstotal, abinfo.fragsize, typ); | |
359 | goto err; | |
360 | } | |
361 | ||
362 | obt->fmt = fmt; | |
363 | obt->nchannels = nchannels; | |
364 | obt->freq = freq; | |
365 | obt->nfrags = abinfo.fragstotal; | |
366 | obt->fragsize = abinfo.fragsize; | |
367 | *pfd = fd; | |
368 | ||
369 | #ifdef DEBUG_MISMATCHES | |
370 | if ((req->fmt != obt->fmt) || | |
371 | (req->nchannels != obt->nchannels) || | |
372 | (req->freq != obt->freq) || | |
373 | (req->fragsize != obt->fragsize) || | |
374 | (req->nfrags != obt->nfrags)) { | |
375 | dolog ("Audio parameters mismatch\n"); | |
376 | oss_dump_info (req, obt); | |
377 | } | |
378 | #endif | |
379 | ||
380 | #ifdef DEBUG | |
381 | oss_dump_info (req, obt); | |
382 | #endif | |
383 | return 0; | |
384 | ||
385 | err: | |
386 | oss_anal_close (&fd); | |
387 | return -1; | |
388 | } | |
389 | ||
390 | static void oss_write_pending (OSSVoiceOut *oss) | |
391 | { | |
392 | HWVoiceOut *hw = &oss->hw; | |
393 | ||
394 | if (oss->mmapped) { | |
395 | return; | |
396 | } | |
397 | ||
398 | while (oss->pending) { | |
399 | int samples_written; | |
400 | ssize_t bytes_written; | |
401 | int samples_till_end = hw->samples - oss->wpos; | |
402 | int samples_to_write = audio_MIN (oss->pending, samples_till_end); | |
403 | int bytes_to_write = samples_to_write << hw->info.shift; | |
404 | void *pcm = advance (oss->pcm_buf, oss->wpos << hw->info.shift); | |
405 | ||
406 | bytes_written = write (oss->fd, pcm, bytes_to_write); | |
407 | if (bytes_written < 0) { | |
408 | if (errno != EAGAIN) { | |
409 | oss_logerr (errno, "failed to write %d bytes\n", | |
410 | bytes_to_write); | |
411 | } | |
412 | break; | |
413 | } | |
414 | ||
415 | if (bytes_written & hw->info.align) { | |
416 | dolog ("misaligned write asked for %d, but got %zd\n", | |
417 | bytes_to_write, bytes_written); | |
418 | return; | |
419 | } | |
420 | ||
421 | samples_written = bytes_written >> hw->info.shift; | |
422 | oss->pending -= samples_written; | |
423 | oss->wpos = (oss->wpos + samples_written) % hw->samples; | |
424 | if (bytes_written - bytes_to_write) { | |
425 | break; | |
426 | } | |
427 | } | |
428 | } | |
429 | ||
430 | static int oss_run_out (HWVoiceOut *hw, int live) | |
431 | { | |
432 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; | |
433 | int err, decr; | |
434 | struct audio_buf_info abinfo; | |
435 | struct count_info cntinfo; | |
436 | int bufsize; | |
437 | ||
438 | bufsize = hw->samples << hw->info.shift; | |
439 | ||
440 | if (oss->mmapped) { | |
441 | int bytes, pos; | |
442 | ||
443 | err = ioctl (oss->fd, SNDCTL_DSP_GETOPTR, &cntinfo); | |
444 | if (err < 0) { | |
445 | oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n"); | |
446 | return 0; | |
447 | } | |
448 | ||
449 | pos = hw->rpos << hw->info.shift; | |
450 | bytes = audio_ring_dist (cntinfo.ptr, pos, bufsize); | |
451 | decr = audio_MIN (bytes >> hw->info.shift, live); | |
452 | } | |
453 | else { | |
454 | err = ioctl (oss->fd, SNDCTL_DSP_GETOSPACE, &abinfo); | |
455 | if (err < 0) { | |
456 | oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n"); | |
457 | return 0; | |
458 | } | |
459 | ||
460 | if (abinfo.bytes > bufsize) { | |
461 | if (conf.debug) { | |
462 | dolog ("warning: Invalid available size, size=%d bufsize=%d\n" | |
463 | "please report your OS/audio hw to av1474@comtv.ru\n", | |
464 | abinfo.bytes, bufsize); | |
465 | } | |
466 | abinfo.bytes = bufsize; | |
467 | } | |
468 | ||
469 | if (abinfo.bytes < 0) { | |
470 | if (conf.debug) { | |
471 | dolog ("warning: Invalid available size, size=%d bufsize=%d\n", | |
472 | abinfo.bytes, bufsize); | |
473 | } | |
474 | return 0; | |
475 | } | |
476 | ||
477 | decr = audio_MIN (abinfo.bytes >> hw->info.shift, live); | |
478 | if (!decr) { | |
479 | return 0; | |
480 | } | |
481 | } | |
482 | ||
483 | decr = audio_pcm_hw_clip_out (hw, oss->pcm_buf, decr, oss->pending); | |
484 | oss->pending += decr; | |
485 | oss_write_pending (oss); | |
486 | ||
487 | return decr; | |
488 | } | |
489 | ||
490 | static void oss_fini_out (HWVoiceOut *hw) | |
491 | { | |
492 | int err; | |
493 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; | |
494 | ||
495 | ldebug ("oss_fini\n"); | |
496 | oss_anal_close (&oss->fd); | |
497 | ||
498 | if (oss->pcm_buf) { | |
499 | if (oss->mmapped) { | |
500 | err = munmap (oss->pcm_buf, hw->samples << hw->info.shift); | |
501 | if (err) { | |
502 | oss_logerr (errno, "Failed to unmap buffer %p, size %d\n", | |
503 | oss->pcm_buf, hw->samples << hw->info.shift); | |
504 | } | |
505 | } | |
506 | else { | |
507 | g_free (oss->pcm_buf); | |
508 | } | |
509 | oss->pcm_buf = NULL; | |
510 | } | |
511 | } | |
512 | ||
513 | static int oss_init_out (HWVoiceOut *hw, struct audsettings *as) | |
514 | { | |
515 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; | |
516 | struct oss_params req, obt; | |
517 | int endianness; | |
518 | int err; | |
519 | int fd; | |
520 | audfmt_e effective_fmt; | |
521 | struct audsettings obt_as; | |
522 | ||
523 | oss->fd = -1; | |
524 | ||
525 | req.fmt = aud_to_ossfmt (as->fmt, as->endianness); | |
526 | req.freq = as->freq; | |
527 | req.nchannels = as->nchannels; | |
528 | req.fragsize = conf.fragsize; | |
529 | req.nfrags = conf.nfrags; | |
530 | ||
531 | if (oss_open (0, &req, &obt, &fd)) { | |
532 | return -1; | |
533 | } | |
534 | ||
535 | err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness); | |
536 | if (err) { | |
537 | oss_anal_close (&fd); | |
538 | return -1; | |
539 | } | |
540 | ||
541 | obt_as.freq = obt.freq; | |
542 | obt_as.nchannels = obt.nchannels; | |
543 | obt_as.fmt = effective_fmt; | |
544 | obt_as.endianness = endianness; | |
545 | ||
546 | audio_pcm_init_info (&hw->info, &obt_as); | |
547 | oss->nfrags = obt.nfrags; | |
548 | oss->fragsize = obt.fragsize; | |
549 | ||
550 | if (obt.nfrags * obt.fragsize & hw->info.align) { | |
551 | dolog ("warning: Misaligned DAC buffer, size %d, alignment %d\n", | |
552 | obt.nfrags * obt.fragsize, hw->info.align + 1); | |
553 | } | |
554 | ||
555 | hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift; | |
556 | ||
557 | oss->mmapped = 0; | |
558 | if (conf.try_mmap) { | |
559 | oss->pcm_buf = mmap ( | |
560 | NULL, | |
561 | hw->samples << hw->info.shift, | |
562 | PROT_READ | PROT_WRITE, | |
563 | MAP_SHARED, | |
564 | fd, | |
565 | 0 | |
566 | ); | |
567 | if (oss->pcm_buf == MAP_FAILED) { | |
568 | oss_logerr (errno, "Failed to map %d bytes of DAC\n", | |
569 | hw->samples << hw->info.shift); | |
570 | } | |
571 | else { | |
572 | int err; | |
573 | int trig = 0; | |
574 | if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { | |
575 | oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n"); | |
576 | } | |
577 | else { | |
578 | trig = PCM_ENABLE_OUTPUT; | |
579 | if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { | |
580 | oss_logerr ( | |
581 | errno, | |
582 | "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n" | |
583 | ); | |
584 | } | |
585 | else { | |
586 | oss->mmapped = 1; | |
587 | } | |
588 | } | |
589 | ||
590 | if (!oss->mmapped) { | |
591 | err = munmap (oss->pcm_buf, hw->samples << hw->info.shift); | |
592 | if (err) { | |
593 | oss_logerr (errno, "Failed to unmap buffer %p size %d\n", | |
594 | oss->pcm_buf, hw->samples << hw->info.shift); | |
595 | } | |
596 | } | |
597 | } | |
598 | } | |
599 | ||
600 | if (!oss->mmapped) { | |
601 | oss->pcm_buf = audio_calloc ( | |
602 | AUDIO_FUNC, | |
603 | hw->samples, | |
604 | 1 << hw->info.shift | |
605 | ); | |
606 | if (!oss->pcm_buf) { | |
607 | dolog ( | |
608 | "Could not allocate DAC buffer (%d samples, each %d bytes)\n", | |
609 | hw->samples, | |
610 | 1 << hw->info.shift | |
611 | ); | |
612 | oss_anal_close (&fd); | |
613 | return -1; | |
614 | } | |
615 | } | |
616 | ||
617 | oss->fd = fd; | |
618 | return 0; | |
619 | } | |
620 | ||
621 | static int oss_ctl_out (HWVoiceOut *hw, int cmd, ...) | |
622 | { | |
623 | int trig; | |
624 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; | |
625 | ||
626 | switch (cmd) { | |
627 | case VOICE_ENABLE: | |
628 | { | |
629 | va_list ap; | |
630 | int poll_mode; | |
631 | ||
632 | va_start (ap, cmd); | |
633 | poll_mode = va_arg (ap, int); | |
634 | va_end (ap); | |
635 | ||
636 | ldebug ("enabling voice\n"); | |
637 | if (poll_mode && oss_poll_out (hw)) { | |
638 | poll_mode = 0; | |
639 | } | |
640 | hw->poll_mode = poll_mode; | |
641 | ||
642 | if (!oss->mmapped) { | |
643 | return 0; | |
644 | } | |
645 | ||
646 | audio_pcm_info_clear_buf (&hw->info, oss->pcm_buf, hw->samples); | |
647 | trig = PCM_ENABLE_OUTPUT; | |
648 | if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { | |
649 | oss_logerr ( | |
650 | errno, | |
651 | "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n" | |
652 | ); | |
653 | return -1; | |
654 | } | |
655 | } | |
656 | break; | |
657 | ||
658 | case VOICE_DISABLE: | |
659 | if (hw->poll_mode) { | |
660 | qemu_set_fd_handler (oss->fd, NULL, NULL, NULL); | |
661 | hw->poll_mode = 0; | |
662 | } | |
663 | ||
664 | if (!oss->mmapped) { | |
665 | return 0; | |
666 | } | |
667 | ||
668 | ldebug ("disabling voice\n"); | |
669 | trig = 0; | |
670 | if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { | |
671 | oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n"); | |
672 | return -1; | |
673 | } | |
674 | break; | |
675 | } | |
676 | return 0; | |
677 | } | |
678 | ||
679 | static int oss_init_in (HWVoiceIn *hw, struct audsettings *as) | |
680 | { | |
681 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; | |
682 | struct oss_params req, obt; | |
683 | int endianness; | |
684 | int err; | |
685 | int fd; | |
686 | audfmt_e effective_fmt; | |
687 | struct audsettings obt_as; | |
688 | ||
689 | oss->fd = -1; | |
690 | ||
691 | req.fmt = aud_to_ossfmt (as->fmt, as->endianness); | |
692 | req.freq = as->freq; | |
693 | req.nchannels = as->nchannels; | |
694 | req.fragsize = conf.fragsize; | |
695 | req.nfrags = conf.nfrags; | |
696 | if (oss_open (1, &req, &obt, &fd)) { | |
697 | return -1; | |
698 | } | |
699 | ||
700 | err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness); | |
701 | if (err) { | |
702 | oss_anal_close (&fd); | |
703 | return -1; | |
704 | } | |
705 | ||
706 | obt_as.freq = obt.freq; | |
707 | obt_as.nchannels = obt.nchannels; | |
708 | obt_as.fmt = effective_fmt; | |
709 | obt_as.endianness = endianness; | |
710 | ||
711 | audio_pcm_init_info (&hw->info, &obt_as); | |
712 | oss->nfrags = obt.nfrags; | |
713 | oss->fragsize = obt.fragsize; | |
714 | ||
715 | if (obt.nfrags * obt.fragsize & hw->info.align) { | |
716 | dolog ("warning: Misaligned ADC buffer, size %d, alignment %d\n", | |
717 | obt.nfrags * obt.fragsize, hw->info.align + 1); | |
718 | } | |
719 | ||
720 | hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift; | |
721 | oss->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift); | |
722 | if (!oss->pcm_buf) { | |
723 | dolog ("Could not allocate ADC buffer (%d samples, each %d bytes)\n", | |
724 | hw->samples, 1 << hw->info.shift); | |
725 | oss_anal_close (&fd); | |
726 | return -1; | |
727 | } | |
728 | ||
729 | oss->fd = fd; | |
730 | return 0; | |
731 | } | |
732 | ||
733 | static void oss_fini_in (HWVoiceIn *hw) | |
734 | { | |
735 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; | |
736 | ||
737 | oss_anal_close (&oss->fd); | |
738 | ||
739 | if (oss->pcm_buf) { | |
740 | g_free (oss->pcm_buf); | |
741 | oss->pcm_buf = NULL; | |
742 | } | |
743 | } | |
744 | ||
745 | static int oss_run_in (HWVoiceIn *hw) | |
746 | { | |
747 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; | |
748 | int hwshift = hw->info.shift; | |
749 | int i; | |
750 | int live = audio_pcm_hw_get_live_in (hw); | |
751 | int dead = hw->samples - live; | |
752 | size_t read_samples = 0; | |
753 | struct { | |
754 | int add; | |
755 | int len; | |
756 | } bufs[2] = { | |
757 | { .add = hw->wpos, .len = 0 }, | |
758 | { .add = 0, .len = 0 } | |
759 | }; | |
760 | ||
761 | if (!dead) { | |
762 | return 0; | |
763 | } | |
764 | ||
765 | if (hw->wpos + dead > hw->samples) { | |
766 | bufs[0].len = (hw->samples - hw->wpos) << hwshift; | |
767 | bufs[1].len = (dead - (hw->samples - hw->wpos)) << hwshift; | |
768 | } | |
769 | else { | |
770 | bufs[0].len = dead << hwshift; | |
771 | } | |
772 | ||
773 | for (i = 0; i < 2; ++i) { | |
774 | ssize_t nread; | |
775 | ||
776 | if (bufs[i].len) { | |
777 | void *p = advance (oss->pcm_buf, bufs[i].add << hwshift); | |
778 | nread = read (oss->fd, p, bufs[i].len); | |
779 | ||
780 | if (nread > 0) { | |
781 | if (nread & hw->info.align) { | |
782 | dolog ("warning: Misaligned read %zd (requested %d), " | |
783 | "alignment %d\n", nread, bufs[i].add << hwshift, | |
784 | hw->info.align + 1); | |
785 | } | |
786 | read_samples += nread >> hwshift; | |
787 | hw->conv (hw->conv_buf + bufs[i].add, p, nread >> hwshift); | |
788 | } | |
789 | ||
790 | if (bufs[i].len - nread) { | |
791 | if (nread == -1) { | |
792 | switch (errno) { | |
793 | case EINTR: | |
794 | case EAGAIN: | |
795 | break; | |
796 | default: | |
797 | oss_logerr ( | |
798 | errno, | |
799 | "Failed to read %d bytes of audio (to %p)\n", | |
800 | bufs[i].len, p | |
801 | ); | |
802 | break; | |
803 | } | |
804 | } | |
805 | break; | |
806 | } | |
807 | } | |
808 | } | |
809 | ||
810 | hw->wpos = (hw->wpos + read_samples) % hw->samples; | |
811 | return read_samples; | |
812 | } | |
813 | ||
814 | static int oss_read (SWVoiceIn *sw, void *buf, int size) | |
815 | { | |
816 | return audio_pcm_sw_read (sw, buf, size); | |
817 | } | |
818 | ||
819 | static int oss_ctl_in (HWVoiceIn *hw, int cmd, ...) | |
820 | { | |
821 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; | |
822 | ||
823 | switch (cmd) { | |
824 | case VOICE_ENABLE: | |
825 | { | |
826 | va_list ap; | |
827 | int poll_mode; | |
828 | ||
829 | va_start (ap, cmd); | |
830 | poll_mode = va_arg (ap, int); | |
831 | va_end (ap); | |
832 | ||
833 | if (poll_mode && oss_poll_in (hw)) { | |
834 | poll_mode = 0; | |
835 | } | |
836 | hw->poll_mode = poll_mode; | |
837 | } | |
838 | break; | |
839 | ||
840 | case VOICE_DISABLE: | |
841 | if (hw->poll_mode) { | |
842 | hw->poll_mode = 0; | |
843 | qemu_set_fd_handler (oss->fd, NULL, NULL, NULL); | |
844 | } | |
845 | break; | |
846 | } | |
847 | return 0; | |
848 | } | |
849 | ||
850 | static void *oss_audio_init (void) | |
851 | { | |
852 | return &conf; | |
853 | } | |
854 | ||
855 | static void oss_audio_fini (void *opaque) | |
856 | { | |
857 | (void) opaque; | |
858 | } | |
859 | ||
860 | static struct audio_option oss_options[] = { | |
861 | { | |
862 | .name = "FRAGSIZE", | |
863 | .tag = AUD_OPT_INT, | |
864 | .valp = &conf.fragsize, | |
865 | .descr = "Fragment size in bytes" | |
866 | }, | |
867 | { | |
868 | .name = "NFRAGS", | |
869 | .tag = AUD_OPT_INT, | |
870 | .valp = &conf.nfrags, | |
871 | .descr = "Number of fragments" | |
872 | }, | |
873 | { | |
874 | .name = "MMAP", | |
875 | .tag = AUD_OPT_BOOL, | |
876 | .valp = &conf.try_mmap, | |
877 | .descr = "Try using memory mapped access" | |
878 | }, | |
879 | { | |
880 | .name = "DAC_DEV", | |
881 | .tag = AUD_OPT_STR, | |
882 | .valp = &conf.devpath_out, | |
883 | .descr = "Path to DAC device" | |
884 | }, | |
885 | { | |
886 | .name = "ADC_DEV", | |
887 | .tag = AUD_OPT_STR, | |
888 | .valp = &conf.devpath_in, | |
889 | .descr = "Path to ADC device" | |
890 | }, | |
891 | { | |
892 | .name = "EXCLUSIVE", | |
893 | .tag = AUD_OPT_BOOL, | |
894 | .valp = &conf.exclusive, | |
895 | .descr = "Open device in exclusive mode (vmix wont work)" | |
896 | }, | |
897 | #ifdef USE_DSP_POLICY | |
898 | { | |
899 | .name = "POLICY", | |
900 | .tag = AUD_OPT_INT, | |
901 | .valp = &conf.policy, | |
902 | .descr = "Set the timing policy of the device, -1 to use fragment mode", | |
903 | }, | |
904 | #endif | |
905 | { | |
906 | .name = "DEBUG", | |
907 | .tag = AUD_OPT_BOOL, | |
908 | .valp = &conf.debug, | |
909 | .descr = "Turn on some debugging messages" | |
910 | }, | |
911 | { /* End of list */ } | |
912 | }; | |
913 | ||
914 | static struct audio_pcm_ops oss_pcm_ops = { | |
915 | .init_out = oss_init_out, | |
916 | .fini_out = oss_fini_out, | |
917 | .run_out = oss_run_out, | |
918 | .write = oss_write, | |
919 | .ctl_out = oss_ctl_out, | |
920 | ||
921 | .init_in = oss_init_in, | |
922 | .fini_in = oss_fini_in, | |
923 | .run_in = oss_run_in, | |
924 | .read = oss_read, | |
925 | .ctl_in = oss_ctl_in | |
926 | }; | |
927 | ||
928 | struct audio_driver oss_audio_driver = { | |
929 | .name = "oss", | |
930 | .descr = "OSS http://www.opensound.com", | |
931 | .options = oss_options, | |
932 | .init = oss_audio_init, | |
933 | .fini = oss_audio_fini, | |
934 | .pcm_ops = &oss_pcm_ops, | |
935 | .can_be_default = 1, | |
936 | .max_voices_out = INT_MAX, | |
937 | .max_voices_in = INT_MAX, | |
938 | .voice_size_out = sizeof (OSSVoiceOut), | |
939 | .voice_size_in = sizeof (OSSVoiceIn) | |
940 | }; |