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Commit | Line | Data |
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85571bc7 | 1 | /* |
1d14ffa9 FB |
2 | * QEMU OSS audio driver |
3 | * | |
4 | * Copyright (c) 2003-2005 Vassili Karpov (malc) | |
5 | * | |
85571bc7 FB |
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 | */ | |
f0c757e4 | 24 | #include <stdlib.h> |
85571bc7 FB |
25 | #include <sys/mman.h> |
26 | #include <sys/types.h> | |
27 | #include <sys/ioctl.h> | |
f0c757e4 TS |
28 | #ifdef __OpenBSD__ |
29 | #include <soundcard.h> | |
30 | #else | |
85571bc7 | 31 | #include <sys/soundcard.h> |
f0c757e4 | 32 | #endif |
87ecb68b | 33 | #include "qemu-common.h" |
057fa65c | 34 | #include "host-utils.h" |
dd8a5649 | 35 | #include "qemu-char.h" |
87ecb68b | 36 | #include "audio.h" |
fb065187 | 37 | |
1d14ffa9 FB |
38 | #define AUDIO_CAP "oss" |
39 | #include "audio_int.h" | |
fb065187 | 40 | |
1d14ffa9 FB |
41 | typedef struct OSSVoiceOut { |
42 | HWVoiceOut hw; | |
fb065187 FB |
43 | void *pcm_buf; |
44 | int fd; | |
45 | int nfrags; | |
46 | int fragsize; | |
47 | int mmapped; | |
1d14ffa9 | 48 | } OSSVoiceOut; |
85571bc7 | 49 | |
1d14ffa9 FB |
50 | typedef struct OSSVoiceIn { |
51 | HWVoiceIn hw; | |
52 | void *pcm_buf; | |
53 | int fd; | |
54 | int nfrags; | |
55 | int fragsize; | |
1d14ffa9 | 56 | } OSSVoiceIn; |
85571bc7 FB |
57 | |
58 | static struct { | |
59 | int try_mmap; | |
60 | int nfrags; | |
61 | int fragsize; | |
1d14ffa9 FB |
62 | const char *devpath_out; |
63 | const char *devpath_in; | |
8ead62cf | 64 | int debug; |
0b3652bc | 65 | int exclusive; |
66 | int policy; | |
85571bc7 FB |
67 | } conf = { |
68 | .try_mmap = 0, | |
69 | .nfrags = 4, | |
70 | .fragsize = 4096, | |
1d14ffa9 | 71 | .devpath_out = "/dev/dsp", |
8ead62cf | 72 | .devpath_in = "/dev/dsp", |
0b3652bc | 73 | .debug = 0, |
74 | .exclusive = 0, | |
75 | .policy = 5 | |
85571bc7 FB |
76 | }; |
77 | ||
78 | struct oss_params { | |
79 | int freq; | |
80 | audfmt_e fmt; | |
81 | int nchannels; | |
82 | int nfrags; | |
83 | int fragsize; | |
84 | }; | |
85 | ||
1d14ffa9 | 86 | static void GCC_FMT_ATTR (2, 3) oss_logerr (int err, const char *fmt, ...) |
85571bc7 | 87 | { |
1d14ffa9 FB |
88 | va_list ap; |
89 | ||
571ec3d6 | 90 | va_start (ap, fmt); |
1d14ffa9 | 91 | AUD_vlog (AUDIO_CAP, fmt, ap); |
571ec3d6 | 92 | va_end (ap); |
1d14ffa9 | 93 | |
1d14ffa9 | 94 | AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err)); |
85571bc7 FB |
95 | } |
96 | ||
1d14ffa9 FB |
97 | static void GCC_FMT_ATTR (3, 4) oss_logerr2 ( |
98 | int err, | |
99 | const char *typ, | |
100 | const char *fmt, | |
101 | ... | |
102 | ) | |
103 | { | |
104 | va_list ap; | |
105 | ||
c0fe3827 | 106 | AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ); |
1d14ffa9 FB |
107 | |
108 | va_start (ap, fmt); | |
109 | AUD_vlog (AUDIO_CAP, fmt, ap); | |
110 | va_end (ap); | |
111 | ||
112 | AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err)); | |
113 | } | |
114 | ||
115 | static void oss_anal_close (int *fdp) | |
116 | { | |
6ebfda13 | 117 | int err; |
118 | ||
119 | qemu_set_fd_handler (*fdp, NULL, NULL, NULL); | |
120 | err = close (*fdp); | |
1d14ffa9 FB |
121 | if (err) { |
122 | oss_logerr (errno, "Failed to close file(fd=%d)\n", *fdp); | |
123 | } | |
124 | *fdp = -1; | |
125 | } | |
126 | ||
dd8a5649 | 127 | static void oss_helper_poll_out (void *opaque) |
128 | { | |
129 | (void) opaque; | |
130 | audio_run ("oss_poll_out"); | |
131 | } | |
132 | ||
133 | static void oss_helper_poll_in (void *opaque) | |
134 | { | |
135 | (void) opaque; | |
136 | audio_run ("oss_poll_in"); | |
137 | } | |
138 | ||
139 | static int oss_poll_out (HWVoiceOut *hw) | |
140 | { | |
141 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; | |
142 | ||
143 | return qemu_set_fd_handler (oss->fd, NULL, oss_helper_poll_out, NULL); | |
144 | } | |
145 | ||
146 | static int oss_poll_in (HWVoiceIn *hw) | |
147 | { | |
148 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; | |
149 | ||
150 | return qemu_set_fd_handler (oss->fd, oss_helper_poll_in, NULL, NULL); | |
151 | } | |
152 | ||
1d14ffa9 FB |
153 | static int oss_write (SWVoiceOut *sw, void *buf, int len) |
154 | { | |
155 | return audio_pcm_sw_write (sw, buf, len); | |
156 | } | |
157 | ||
158 | static int aud_to_ossfmt (audfmt_e fmt) | |
85571bc7 FB |
159 | { |
160 | switch (fmt) { | |
1d14ffa9 FB |
161 | case AUD_FMT_S8: |
162 | return AFMT_S8; | |
163 | ||
164 | case AUD_FMT_U8: | |
165 | return AFMT_U8; | |
166 | ||
167 | case AUD_FMT_S16: | |
168 | return AFMT_S16_LE; | |
169 | ||
170 | case AUD_FMT_U16: | |
171 | return AFMT_U16_LE; | |
172 | ||
85571bc7 | 173 | default: |
1d14ffa9 FB |
174 | dolog ("Internal logic error: Bad audio format %d\n", fmt); |
175 | #ifdef DEBUG_AUDIO | |
176 | abort (); | |
177 | #endif | |
178 | return AFMT_U8; | |
85571bc7 FB |
179 | } |
180 | } | |
181 | ||
1d14ffa9 | 182 | static int oss_to_audfmt (int ossfmt, audfmt_e *fmt, int *endianness) |
85571bc7 | 183 | { |
1d14ffa9 FB |
184 | switch (ossfmt) { |
185 | case AFMT_S8: | |
ca9cc28c | 186 | *endianness = 0; |
1d14ffa9 FB |
187 | *fmt = AUD_FMT_S8; |
188 | break; | |
189 | ||
190 | case AFMT_U8: | |
191 | *endianness = 0; | |
192 | *fmt = AUD_FMT_U8; | |
193 | break; | |
194 | ||
195 | case AFMT_S16_LE: | |
196 | *endianness = 0; | |
197 | *fmt = AUD_FMT_S16; | |
198 | break; | |
199 | ||
200 | case AFMT_U16_LE: | |
201 | *endianness = 0; | |
202 | *fmt = AUD_FMT_U16; | |
203 | break; | |
204 | ||
205 | case AFMT_S16_BE: | |
206 | *endianness = 1; | |
207 | *fmt = AUD_FMT_S16; | |
208 | break; | |
209 | ||
210 | case AFMT_U16_BE: | |
211 | *endianness = 1; | |
212 | *fmt = AUD_FMT_U16; | |
213 | break; | |
214 | ||
85571bc7 | 215 | default: |
1d14ffa9 FB |
216 | dolog ("Unrecognized audio format %d\n", ossfmt); |
217 | return -1; | |
85571bc7 | 218 | } |
1d14ffa9 FB |
219 | |
220 | return 0; | |
85571bc7 FB |
221 | } |
222 | ||
c0fe3827 | 223 | #if defined DEBUG_MISMATCHES || defined DEBUG |
1d14ffa9 | 224 | static void oss_dump_info (struct oss_params *req, struct oss_params *obt) |
85571bc7 FB |
225 | { |
226 | dolog ("parameter | requested value | obtained value\n"); | |
227 | dolog ("format | %10d | %10d\n", req->fmt, obt->fmt); | |
1d14ffa9 FB |
228 | dolog ("channels | %10d | %10d\n", |
229 | req->nchannels, obt->nchannels); | |
85571bc7 FB |
230 | dolog ("frequency | %10d | %10d\n", req->freq, obt->freq); |
231 | dolog ("nfrags | %10d | %10d\n", req->nfrags, obt->nfrags); | |
1d14ffa9 FB |
232 | dolog ("fragsize | %10d | %10d\n", |
233 | req->fragsize, obt->fragsize); | |
85571bc7 FB |
234 | } |
235 | #endif | |
236 | ||
1d14ffa9 FB |
237 | static int oss_open (int in, struct oss_params *req, |
238 | struct oss_params *obt, int *pfd) | |
85571bc7 FB |
239 | { |
240 | int fd; | |
0b3652bc | 241 | int version; |
242 | int oflags = conf.exclusive ? O_EXCL : 0; | |
85571bc7 FB |
243 | audio_buf_info abinfo; |
244 | int fmt, freq, nchannels; | |
1d14ffa9 FB |
245 | const char *dspname = in ? conf.devpath_in : conf.devpath_out; |
246 | const char *typ = in ? "ADC" : "DAC"; | |
85571bc7 | 247 | |
2182349d | 248 | /* Kludge needed to have working mmap on Linux */ |
0b3652bc | 249 | oflags |= conf.try_mmap ? O_RDWR : (in ? O_RDONLY : O_WRONLY); |
250 | ||
2182349d | 251 | fd = open (dspname, oflags | O_NONBLOCK); |
85571bc7 | 252 | if (-1 == fd) { |
1d14ffa9 | 253 | oss_logerr2 (errno, typ, "Failed to open `%s'\n", dspname); |
85571bc7 FB |
254 | return -1; |
255 | } | |
256 | ||
257 | freq = req->freq; | |
258 | nchannels = req->nchannels; | |
259 | fmt = req->fmt; | |
260 | ||
261 | if (ioctl (fd, SNDCTL_DSP_SAMPLESIZE, &fmt)) { | |
1d14ffa9 | 262 | oss_logerr2 (errno, typ, "Failed to set sample size %d\n", req->fmt); |
85571bc7 FB |
263 | goto err; |
264 | } | |
265 | ||
266 | if (ioctl (fd, SNDCTL_DSP_CHANNELS, &nchannels)) { | |
1d14ffa9 FB |
267 | oss_logerr2 (errno, typ, "Failed to set number of channels %d\n", |
268 | req->nchannels); | |
85571bc7 FB |
269 | goto err; |
270 | } | |
271 | ||
272 | if (ioctl (fd, SNDCTL_DSP_SPEED, &freq)) { | |
1d14ffa9 | 273 | oss_logerr2 (errno, typ, "Failed to set frequency %d\n", req->freq); |
85571bc7 FB |
274 | goto err; |
275 | } | |
276 | ||
902e2b51 | 277 | if (ioctl (fd, SNDCTL_DSP_NONBLOCK, NULL)) { |
1d14ffa9 | 278 | oss_logerr2 (errno, typ, "Failed to set non-blocking mode\n"); |
85571bc7 FB |
279 | goto err; |
280 | } | |
281 | ||
0b3652bc | 282 | if (ioctl (fd, OSS_GETVERSION, &version)) { |
283 | oss_logerr2 (errno, typ, "Failed to get OSS version\n"); | |
284 | version = 0; | |
285 | } | |
286 | ||
287 | if (conf.debug) { | |
288 | dolog ("OSS version = %#x\n", version); | |
289 | } | |
290 | ||
291 | #ifdef SNDCTL_DSP_POLICY | |
292 | if (conf.policy >= 0 && version >= 0x040000) { | |
293 | int policy = conf.policy; | |
294 | if (ioctl (fd, SNDCTL_DSP_POLICY, &policy)) { | |
295 | oss_logerr2 (errno, typ, "Failed to set timing policy to %d\n", | |
296 | conf.policy); | |
297 | goto err; | |
298 | } | |
299 | } | |
300 | else | |
301 | #endif | |
302 | { | |
303 | int mmmmssss = (req->nfrags << 16) | ctz32 (req->fragsize); | |
304 | if (ioctl (fd, SNDCTL_DSP_SETFRAGMENT, &mmmmssss)) { | |
305 | oss_logerr2 (errno, typ, "Failed to set buffer length (%d, %d)\n", | |
306 | req->nfrags, req->fragsize); | |
307 | goto err; | |
308 | } | |
85571bc7 FB |
309 | } |
310 | ||
1d14ffa9 FB |
311 | if (ioctl (fd, in ? SNDCTL_DSP_GETISPACE : SNDCTL_DSP_GETOSPACE, &abinfo)) { |
312 | oss_logerr2 (errno, typ, "Failed to get buffer length\n"); | |
85571bc7 FB |
313 | goto err; |
314 | } | |
315 | ||
29ddf27b | 316 | if (!abinfo.fragstotal || !abinfo.fragsize) { |
317 | AUD_log (AUDIO_CAP, "Returned bogus buffer information(%d, %d) for %s\n", | |
318 | abinfo.fragstotal, abinfo.fragsize, typ); | |
319 | goto err; | |
320 | } | |
321 | ||
85571bc7 FB |
322 | obt->fmt = fmt; |
323 | obt->nchannels = nchannels; | |
324 | obt->freq = freq; | |
325 | obt->nfrags = abinfo.fragstotal; | |
326 | obt->fragsize = abinfo.fragsize; | |
327 | *pfd = fd; | |
328 | ||
c0fe3827 | 329 | #ifdef DEBUG_MISMATCHES |
85571bc7 FB |
330 | if ((req->fmt != obt->fmt) || |
331 | (req->nchannels != obt->nchannels) || | |
332 | (req->freq != obt->freq) || | |
333 | (req->fragsize != obt->fragsize) || | |
334 | (req->nfrags != obt->nfrags)) { | |
85571bc7 | 335 | dolog ("Audio parameters mismatch\n"); |
1d14ffa9 | 336 | oss_dump_info (req, obt); |
85571bc7 | 337 | } |
c0fe3827 | 338 | #endif |
85571bc7 | 339 | |
1d14ffa9 FB |
340 | #ifdef DEBUG |
341 | oss_dump_info (req, obt); | |
85571bc7 FB |
342 | #endif |
343 | return 0; | |
344 | ||
1d14ffa9 FB |
345 | err: |
346 | oss_anal_close (&fd); | |
85571bc7 FB |
347 | return -1; |
348 | } | |
349 | ||
1d14ffa9 | 350 | static int oss_run_out (HWVoiceOut *hw) |
85571bc7 | 351 | { |
1d14ffa9 | 352 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
85571bc7 FB |
353 | int err, rpos, live, decr; |
354 | int samples; | |
355 | uint8_t *dst; | |
1ea879e5 | 356 | struct st_sample *src; |
85571bc7 FB |
357 | struct audio_buf_info abinfo; |
358 | struct count_info cntinfo; | |
c0fe3827 | 359 | int bufsize; |
85571bc7 | 360 | |
1d14ffa9 FB |
361 | live = audio_pcm_hw_get_live_out (hw); |
362 | if (!live) { | |
363 | return 0; | |
364 | } | |
85571bc7 | 365 | |
c0fe3827 FB |
366 | bufsize = hw->samples << hw->info.shift; |
367 | ||
85571bc7 | 368 | if (oss->mmapped) { |
54762b73 | 369 | int bytes, pos; |
85571bc7 FB |
370 | |
371 | err = ioctl (oss->fd, SNDCTL_DSP_GETOPTR, &cntinfo); | |
372 | if (err < 0) { | |
1d14ffa9 FB |
373 | oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n"); |
374 | return 0; | |
85571bc7 FB |
375 | } |
376 | ||
54762b73 | 377 | pos = hw->rpos << hw->info.shift; |
378 | bytes = audio_ring_dist (cntinfo.ptr, pos, bufsize); | |
1d14ffa9 | 379 | decr = audio_MIN (bytes >> hw->info.shift, live); |
85571bc7 FB |
380 | } |
381 | else { | |
382 | err = ioctl (oss->fd, SNDCTL_DSP_GETOSPACE, &abinfo); | |
383 | if (err < 0) { | |
1d14ffa9 FB |
384 | oss_logerr (errno, "SNDCTL_DSP_GETOPTR failed\n"); |
385 | return 0; | |
386 | } | |
387 | ||
8ead62cf FB |
388 | if (abinfo.bytes > bufsize) { |
389 | if (conf.debug) { | |
390 | dolog ("warning: Invalid available size, size=%d bufsize=%d\n" | |
391 | "please report your OS/audio hw to malc@pulsesoft.com\n", | |
392 | abinfo.bytes, bufsize); | |
393 | } | |
394 | abinfo.bytes = bufsize; | |
395 | } | |
396 | ||
397 | if (abinfo.bytes < 0) { | |
398 | if (conf.debug) { | |
399 | dolog ("warning: Invalid available size, size=%d bufsize=%d\n", | |
400 | abinfo.bytes, bufsize); | |
401 | } | |
1d14ffa9 | 402 | return 0; |
85571bc7 FB |
403 | } |
404 | ||
1d14ffa9 FB |
405 | decr = audio_MIN (abinfo.bytes >> hw->info.shift, live); |
406 | if (!decr) { | |
407 | return 0; | |
408 | } | |
85571bc7 FB |
409 | } |
410 | ||
411 | samples = decr; | |
412 | rpos = hw->rpos; | |
413 | while (samples) { | |
414 | int left_till_end_samples = hw->samples - rpos; | |
415 | int convert_samples = audio_MIN (samples, left_till_end_samples); | |
416 | ||
1d14ffa9 FB |
417 | src = hw->mix_buf + rpos; |
418 | dst = advance (oss->pcm_buf, rpos << hw->info.shift); | |
85571bc7 FB |
419 | |
420 | hw->clip (dst, src, convert_samples); | |
421 | if (!oss->mmapped) { | |
422 | int written; | |
423 | ||
1d14ffa9 | 424 | written = write (oss->fd, dst, convert_samples << hw->info.shift); |
85571bc7 FB |
425 | /* XXX: follow errno recommendations ? */ |
426 | if (written == -1) { | |
1d14ffa9 FB |
427 | oss_logerr ( |
428 | errno, | |
429 | "Failed to write %d bytes of audio data from %p\n", | |
430 | convert_samples << hw->info.shift, | |
431 | dst | |
432 | ); | |
85571bc7 FB |
433 | continue; |
434 | } | |
435 | ||
1d14ffa9 FB |
436 | if (written != convert_samples << hw->info.shift) { |
437 | int wsamples = written >> hw->info.shift; | |
438 | int wbytes = wsamples << hw->info.shift; | |
85571bc7 | 439 | if (wbytes != written) { |
c0fe3827 | 440 | dolog ("warning: Misaligned write %d (requested %d), " |
1d14ffa9 FB |
441 | "alignment %d\n", |
442 | wbytes, written, hw->info.align + 1); | |
85571bc7 | 443 | } |
1d14ffa9 | 444 | decr -= wsamples; |
85571bc7 FB |
445 | rpos = (rpos + wsamples) % hw->samples; |
446 | break; | |
447 | } | |
448 | } | |
1d14ffa9 | 449 | |
85571bc7 FB |
450 | rpos = (rpos + convert_samples) % hw->samples; |
451 | samples -= convert_samples; | |
452 | } | |
85571bc7 | 453 | |
85571bc7 | 454 | hw->rpos = rpos; |
1d14ffa9 | 455 | return decr; |
85571bc7 FB |
456 | } |
457 | ||
1d14ffa9 | 458 | static void oss_fini_out (HWVoiceOut *hw) |
85571bc7 FB |
459 | { |
460 | int err; | |
1d14ffa9 | 461 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
85571bc7 | 462 | |
1d14ffa9 FB |
463 | ldebug ("oss_fini\n"); |
464 | oss_anal_close (&oss->fd); | |
85571bc7 FB |
465 | |
466 | if (oss->pcm_buf) { | |
467 | if (oss->mmapped) { | |
c0fe3827 | 468 | err = munmap (oss->pcm_buf, hw->samples << hw->info.shift); |
85571bc7 | 469 | if (err) { |
1d14ffa9 | 470 | oss_logerr (errno, "Failed to unmap buffer %p, size %d\n", |
c0fe3827 | 471 | oss->pcm_buf, hw->samples << hw->info.shift); |
85571bc7 FB |
472 | } |
473 | } | |
474 | else { | |
475 | qemu_free (oss->pcm_buf); | |
476 | } | |
477 | oss->pcm_buf = NULL; | |
478 | } | |
479 | } | |
480 | ||
1ea879e5 | 481 | static int oss_init_out (HWVoiceOut *hw, struct audsettings *as) |
85571bc7 | 482 | { |
1d14ffa9 | 483 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
85571bc7 | 484 | struct oss_params req, obt; |
1d14ffa9 FB |
485 | int endianness; |
486 | int err; | |
487 | int fd; | |
488 | audfmt_e effective_fmt; | |
1ea879e5 | 489 | struct audsettings obt_as; |
85571bc7 | 490 | |
571ec3d6 FB |
491 | oss->fd = -1; |
492 | ||
c0fe3827 FB |
493 | req.fmt = aud_to_ossfmt (as->fmt); |
494 | req.freq = as->freq; | |
495 | req.nchannels = as->nchannels; | |
85571bc7 FB |
496 | req.fragsize = conf.fragsize; |
497 | req.nfrags = conf.nfrags; | |
498 | ||
1d14ffa9 | 499 | if (oss_open (0, &req, &obt, &fd)) { |
85571bc7 | 500 | return -1; |
1d14ffa9 | 501 | } |
85571bc7 | 502 | |
1d14ffa9 FB |
503 | err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness); |
504 | if (err) { | |
505 | oss_anal_close (&fd); | |
506 | return -1; | |
507 | } | |
85571bc7 | 508 | |
c0fe3827 FB |
509 | obt_as.freq = obt.freq; |
510 | obt_as.nchannels = obt.nchannels; | |
511 | obt_as.fmt = effective_fmt; | |
d929eba5 | 512 | obt_as.endianness = endianness; |
c0fe3827 | 513 | |
d929eba5 | 514 | audio_pcm_init_info (&hw->info, &obt_as); |
85571bc7 FB |
515 | oss->nfrags = obt.nfrags; |
516 | oss->fragsize = obt.fragsize; | |
c0fe3827 FB |
517 | |
518 | if (obt.nfrags * obt.fragsize & hw->info.align) { | |
519 | dolog ("warning: Misaligned DAC buffer, size %d, alignment %d\n", | |
520 | obt.nfrags * obt.fragsize, hw->info.align + 1); | |
521 | } | |
522 | ||
523 | hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift; | |
85571bc7 FB |
524 | |
525 | oss->mmapped = 0; | |
526 | if (conf.try_mmap) { | |
c0fe3827 | 527 | oss->pcm_buf = mmap ( |
660f11be | 528 | NULL, |
c0fe3827 FB |
529 | hw->samples << hw->info.shift, |
530 | PROT_READ | PROT_WRITE, | |
531 | MAP_SHARED, | |
532 | fd, | |
533 | 0 | |
534 | ); | |
85571bc7 | 535 | if (oss->pcm_buf == MAP_FAILED) { |
1d14ffa9 | 536 | oss_logerr (errno, "Failed to map %d bytes of DAC\n", |
c0fe3827 | 537 | hw->samples << hw->info.shift); |
54762b73 | 538 | } |
539 | else { | |
85571bc7 FB |
540 | int err; |
541 | int trig = 0; | |
1d14ffa9 FB |
542 | if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
543 | oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n"); | |
85571bc7 | 544 | } |
44a095a7 FB |
545 | else { |
546 | trig = PCM_ENABLE_OUTPUT; | |
1d14ffa9 FB |
547 | if (ioctl (fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { |
548 | oss_logerr ( | |
549 | errno, | |
550 | "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n" | |
551 | ); | |
44a095a7 FB |
552 | } |
553 | else { | |
554 | oss->mmapped = 1; | |
555 | } | |
85571bc7 | 556 | } |
85571bc7 | 557 | |
44a095a7 | 558 | if (!oss->mmapped) { |
c0fe3827 | 559 | err = munmap (oss->pcm_buf, hw->samples << hw->info.shift); |
44a095a7 | 560 | if (err) { |
1d14ffa9 | 561 | oss_logerr (errno, "Failed to unmap buffer %p size %d\n", |
c0fe3827 | 562 | oss->pcm_buf, hw->samples << hw->info.shift); |
44a095a7 | 563 | } |
85571bc7 FB |
564 | } |
565 | } | |
566 | } | |
567 | ||
568 | if (!oss->mmapped) { | |
c0fe3827 FB |
569 | oss->pcm_buf = audio_calloc ( |
570 | AUDIO_FUNC, | |
571 | hw->samples, | |
572 | 1 << hw->info.shift | |
573 | ); | |
85571bc7 | 574 | if (!oss->pcm_buf) { |
b41cffbe FB |
575 | dolog ( |
576 | "Could not allocate DAC buffer (%d samples, each %d bytes)\n", | |
577 | hw->samples, | |
578 | 1 << hw->info.shift | |
579 | ); | |
1d14ffa9 | 580 | oss_anal_close (&fd); |
85571bc7 FB |
581 | return -1; |
582 | } | |
583 | } | |
584 | ||
1d14ffa9 | 585 | oss->fd = fd; |
85571bc7 FB |
586 | return 0; |
587 | } | |
588 | ||
1d14ffa9 | 589 | static int oss_ctl_out (HWVoiceOut *hw, int cmd, ...) |
85571bc7 FB |
590 | { |
591 | int trig; | |
dd8a5649 | 592 | va_list ap; |
593 | int poll_mode; | |
1d14ffa9 | 594 | OSSVoiceOut *oss = (OSSVoiceOut *) hw; |
85571bc7 | 595 | |
dd8a5649 | 596 | va_start (ap, cmd); |
597 | poll_mode = va_arg (ap, int); | |
598 | va_end (ap); | |
85571bc7 FB |
599 | |
600 | switch (cmd) { | |
601 | case VOICE_ENABLE: | |
602 | ldebug ("enabling voice\n"); | |
dd8a5649 | 603 | if (poll_mode && oss_poll_out (hw)) { |
604 | poll_mode = 0; | |
605 | } | |
606 | hw->poll_mode = poll_mode; | |
607 | ||
608 | if (!oss->mmapped) { | |
609 | return 0; | |
610 | } | |
611 | ||
1d14ffa9 | 612 | audio_pcm_info_clear_buf (&hw->info, oss->pcm_buf, hw->samples); |
85571bc7 FB |
613 | trig = PCM_ENABLE_OUTPUT; |
614 | if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { | |
1d14ffa9 FB |
615 | oss_logerr ( |
616 | errno, | |
617 | "SNDCTL_DSP_SETTRIGGER PCM_ENABLE_OUTPUT failed\n" | |
618 | ); | |
85571bc7 FB |
619 | return -1; |
620 | } | |
621 | break; | |
622 | ||
623 | case VOICE_DISABLE: | |
dd8a5649 | 624 | if (hw->poll_mode) { |
625 | qemu_set_fd_handler (oss->fd, NULL, NULL, NULL); | |
626 | hw->poll_mode = 0; | |
627 | } | |
628 | ||
629 | if (!oss->mmapped) { | |
630 | return 0; | |
631 | } | |
632 | ||
85571bc7 FB |
633 | ldebug ("disabling voice\n"); |
634 | trig = 0; | |
635 | if (ioctl (oss->fd, SNDCTL_DSP_SETTRIGGER, &trig) < 0) { | |
1d14ffa9 | 636 | oss_logerr (errno, "SNDCTL_DSP_SETTRIGGER 0 failed\n"); |
85571bc7 FB |
637 | return -1; |
638 | } | |
639 | break; | |
640 | } | |
641 | return 0; | |
642 | } | |
643 | ||
1ea879e5 | 644 | static int oss_init_in (HWVoiceIn *hw, struct audsettings *as) |
1d14ffa9 FB |
645 | { |
646 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; | |
647 | struct oss_params req, obt; | |
648 | int endianness; | |
649 | int err; | |
650 | int fd; | |
651 | audfmt_e effective_fmt; | |
1ea879e5 | 652 | struct audsettings obt_as; |
1d14ffa9 | 653 | |
571ec3d6 FB |
654 | oss->fd = -1; |
655 | ||
c0fe3827 FB |
656 | req.fmt = aud_to_ossfmt (as->fmt); |
657 | req.freq = as->freq; | |
658 | req.nchannels = as->nchannels; | |
1d14ffa9 FB |
659 | req.fragsize = conf.fragsize; |
660 | req.nfrags = conf.nfrags; | |
661 | if (oss_open (1, &req, &obt, &fd)) { | |
662 | return -1; | |
663 | } | |
664 | ||
665 | err = oss_to_audfmt (obt.fmt, &effective_fmt, &endianness); | |
666 | if (err) { | |
667 | oss_anal_close (&fd); | |
668 | return -1; | |
669 | } | |
670 | ||
c0fe3827 FB |
671 | obt_as.freq = obt.freq; |
672 | obt_as.nchannels = obt.nchannels; | |
673 | obt_as.fmt = effective_fmt; | |
d929eba5 | 674 | obt_as.endianness = endianness; |
c0fe3827 | 675 | |
d929eba5 | 676 | audio_pcm_init_info (&hw->info, &obt_as); |
1d14ffa9 FB |
677 | oss->nfrags = obt.nfrags; |
678 | oss->fragsize = obt.fragsize; | |
c0fe3827 FB |
679 | |
680 | if (obt.nfrags * obt.fragsize & hw->info.align) { | |
681 | dolog ("warning: Misaligned ADC buffer, size %d, alignment %d\n", | |
682 | obt.nfrags * obt.fragsize, hw->info.align + 1); | |
683 | } | |
684 | ||
685 | hw->samples = (obt.nfrags * obt.fragsize) >> hw->info.shift; | |
686 | oss->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift); | |
1d14ffa9 | 687 | if (!oss->pcm_buf) { |
b41cffbe FB |
688 | dolog ("Could not allocate ADC buffer (%d samples, each %d bytes)\n", |
689 | hw->samples, 1 << hw->info.shift); | |
1d14ffa9 FB |
690 | oss_anal_close (&fd); |
691 | return -1; | |
692 | } | |
693 | ||
694 | oss->fd = fd; | |
695 | return 0; | |
696 | } | |
697 | ||
698 | static void oss_fini_in (HWVoiceIn *hw) | |
699 | { | |
700 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; | |
701 | ||
702 | oss_anal_close (&oss->fd); | |
703 | ||
704 | if (oss->pcm_buf) { | |
705 | qemu_free (oss->pcm_buf); | |
706 | oss->pcm_buf = NULL; | |
707 | } | |
708 | } | |
709 | ||
710 | static int oss_run_in (HWVoiceIn *hw) | |
711 | { | |
712 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; | |
713 | int hwshift = hw->info.shift; | |
714 | int i; | |
715 | int live = audio_pcm_hw_get_live_in (hw); | |
716 | int dead = hw->samples - live; | |
717 | size_t read_samples = 0; | |
718 | struct { | |
719 | int add; | |
720 | int len; | |
721 | } bufs[2] = { | |
98f9f48c | 722 | { .add = hw->wpos, .len = 0 }, |
723 | { .add = 0, .len = 0 } | |
1d14ffa9 FB |
724 | }; |
725 | ||
726 | if (!dead) { | |
727 | return 0; | |
728 | } | |
729 | ||
730 | if (hw->wpos + dead > hw->samples) { | |
731 | bufs[0].len = (hw->samples - hw->wpos) << hwshift; | |
732 | bufs[1].len = (dead - (hw->samples - hw->wpos)) << hwshift; | |
733 | } | |
734 | else { | |
735 | bufs[0].len = dead << hwshift; | |
736 | } | |
737 | ||
1d14ffa9 FB |
738 | for (i = 0; i < 2; ++i) { |
739 | ssize_t nread; | |
740 | ||
741 | if (bufs[i].len) { | |
742 | void *p = advance (oss->pcm_buf, bufs[i].add << hwshift); | |
743 | nread = read (oss->fd, p, bufs[i].len); | |
744 | ||
745 | if (nread > 0) { | |
746 | if (nread & hw->info.align) { | |
b41cffbe | 747 | dolog ("warning: Misaligned read %zd (requested %d), " |
1d14ffa9 FB |
748 | "alignment %d\n", nread, bufs[i].add << hwshift, |
749 | hw->info.align + 1); | |
750 | } | |
751 | read_samples += nread >> hwshift; | |
752 | hw->conv (hw->conv_buf + bufs[i].add, p, nread >> hwshift, | |
753 | &nominal_volume); | |
754 | } | |
755 | ||
756 | if (bufs[i].len - nread) { | |
757 | if (nread == -1) { | |
758 | switch (errno) { | |
759 | case EINTR: | |
760 | case EAGAIN: | |
761 | break; | |
762 | default: | |
763 | oss_logerr ( | |
764 | errno, | |
765 | "Failed to read %d bytes of audio (to %p)\n", | |
766 | bufs[i].len, p | |
767 | ); | |
768 | break; | |
769 | } | |
770 | } | |
771 | break; | |
772 | } | |
773 | } | |
774 | } | |
775 | ||
776 | hw->wpos = (hw->wpos + read_samples) % hw->samples; | |
777 | return read_samples; | |
778 | } | |
779 | ||
780 | static int oss_read (SWVoiceIn *sw, void *buf, int size) | |
781 | { | |
782 | return audio_pcm_sw_read (sw, buf, size); | |
783 | } | |
784 | ||
785 | static int oss_ctl_in (HWVoiceIn *hw, int cmd, ...) | |
786 | { | |
dd8a5649 | 787 | va_list ap; |
788 | int poll_mode; | |
789 | OSSVoiceIn *oss = (OSSVoiceIn *) hw; | |
790 | ||
791 | va_start (ap, cmd); | |
792 | poll_mode = va_arg (ap, int); | |
793 | va_end (ap); | |
794 | ||
795 | switch (cmd) { | |
796 | case VOICE_ENABLE: | |
797 | if (poll_mode && oss_poll_in (hw)) { | |
798 | poll_mode = 0; | |
799 | } | |
800 | hw->poll_mode = poll_mode; | |
801 | break; | |
802 | ||
803 | case VOICE_DISABLE: | |
804 | if (hw->poll_mode) { | |
805 | hw->poll_mode = 0; | |
806 | qemu_set_fd_handler (oss->fd, NULL, NULL, NULL); | |
807 | } | |
808 | break; | |
809 | } | |
1d14ffa9 FB |
810 | return 0; |
811 | } | |
812 | ||
85571bc7 FB |
813 | static void *oss_audio_init (void) |
814 | { | |
85571bc7 FB |
815 | return &conf; |
816 | } | |
817 | ||
818 | static void oss_audio_fini (void *opaque) | |
819 | { | |
1d14ffa9 | 820 | (void) opaque; |
85571bc7 FB |
821 | } |
822 | ||
1d14ffa9 | 823 | static struct audio_option oss_options[] = { |
98f9f48c | 824 | { |
825 | .name = "FRAGSIZE", | |
826 | .tag = AUD_OPT_INT, | |
827 | .valp = &conf.fragsize, | |
828 | .descr = "Fragment size in bytes" | |
829 | }, | |
830 | { | |
831 | .name = "NFRAGS", | |
832 | .tag = AUD_OPT_INT, | |
833 | .valp = &conf.nfrags, | |
834 | .descr = "Number of fragments" | |
835 | }, | |
836 | { | |
837 | .name = "MMAP", | |
838 | .tag = AUD_OPT_BOOL, | |
839 | .valp = &conf.try_mmap, | |
840 | .descr = "Try using memory mapped access" | |
841 | }, | |
842 | { | |
843 | .name = "DAC_DEV", | |
844 | .tag = AUD_OPT_STR, | |
845 | .valp = &conf.devpath_out, | |
846 | .descr = "Path to DAC device" | |
847 | }, | |
848 | { | |
849 | .name = "ADC_DEV", | |
850 | .tag = AUD_OPT_STR, | |
851 | .valp = &conf.devpath_in, | |
852 | .descr = "Path to ADC device" | |
853 | }, | |
0b3652bc | 854 | { |
855 | .name = "EXCLUSIVE", | |
856 | .tag = AUD_OPT_BOOL, | |
857 | .valp = &conf.exclusive, | |
858 | .descr = "Open device in exclusive mode (vmix wont work)" | |
859 | }, | |
860 | #ifdef SNDCTL_DSP_POLICY | |
861 | { | |
862 | .name = "POLICY", | |
863 | .tag = AUD_OPT_INT, | |
864 | .valp = &conf.policy, | |
865 | .descr = "Set the timing policy of the device, -1 to use fragment mode", | |
866 | }, | |
867 | #endif | |
98f9f48c | 868 | { |
869 | .name = "DEBUG", | |
870 | .tag = AUD_OPT_BOOL, | |
871 | .valp = &conf.debug, | |
872 | .descr = "Turn on some debugging messages" | |
873 | }, | |
2700efa3 | 874 | { /* End of list */ } |
1d14ffa9 FB |
875 | }; |
876 | ||
35f4b58c | 877 | static struct audio_pcm_ops oss_pcm_ops = { |
1dd3e4d1 JQ |
878 | .init_out = oss_init_out, |
879 | .fini_out = oss_fini_out, | |
880 | .run_out = oss_run_out, | |
881 | .write = oss_write, | |
882 | .ctl_out = oss_ctl_out, | |
883 | ||
884 | .init_in = oss_init_in, | |
885 | .fini_in = oss_fini_in, | |
886 | .run_in = oss_run_in, | |
887 | .read = oss_read, | |
888 | .ctl_in = oss_ctl_in | |
85571bc7 FB |
889 | }; |
890 | ||
1d14ffa9 | 891 | struct audio_driver oss_audio_driver = { |
bee37f32 JQ |
892 | .name = "oss", |
893 | .descr = "OSS http://www.opensound.com", | |
894 | .options = oss_options, | |
895 | .init = oss_audio_init, | |
896 | .fini = oss_audio_fini, | |
897 | .pcm_ops = &oss_pcm_ops, | |
898 | .can_be_default = 1, | |
899 | .max_voices_out = INT_MAX, | |
900 | .max_voices_in = INT_MAX, | |
901 | .voice_size_out = sizeof (OSSVoiceOut), | |
902 | .voice_size_in = sizeof (OSSVoiceIn) | |
85571bc7 | 903 | }; |