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