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