root / audio / audio_template.h @ 6276c767
History | View | Annotate | Download (13.3 kB)
1 |
/*
|
---|---|
2 |
* QEMU Audio subsystem header
|
3 |
*
|
4 |
* Copyright (c) 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 |
|
25 |
#ifdef DAC
|
26 |
#define NAME "playback" |
27 |
#define HWBUF hw->mix_buf
|
28 |
#define TYPE out
|
29 |
#define HW HWVoiceOut
|
30 |
#define SW SWVoiceOut
|
31 |
#else
|
32 |
#define NAME "capture" |
33 |
#define TYPE in
|
34 |
#define HW HWVoiceIn
|
35 |
#define SW SWVoiceIn
|
36 |
#define HWBUF hw->conv_buf
|
37 |
#endif
|
38 |
|
39 |
static void glue (audio_init_nb_voices_, TYPE) ( |
40 |
AudioState *s, |
41 |
struct audio_driver *drv
|
42 |
) |
43 |
{ |
44 |
int max_voices = glue (drv->max_voices_, TYPE);
|
45 |
int voice_size = glue (drv->voice_size_, TYPE);
|
46 |
|
47 |
if (glue (s->nb_hw_voices_, TYPE) > max_voices) {
|
48 |
if (!max_voices) {
|
49 |
#ifdef DAC
|
50 |
dolog ("Driver `%s' does not support " NAME "\n", drv->name); |
51 |
#endif
|
52 |
} |
53 |
else {
|
54 |
dolog ("Driver `%s' does not support %d " NAME " voices, max %d\n", |
55 |
drv->name, |
56 |
glue (s->nb_hw_voices_, TYPE), |
57 |
max_voices); |
58 |
} |
59 |
glue (s->nb_hw_voices_, TYPE) = max_voices; |
60 |
} |
61 |
|
62 |
if (audio_bug (AUDIO_FUNC, !voice_size && max_voices)) {
|
63 |
dolog ("drv=`%s' voice_size=0 max_voices=%d\n",
|
64 |
drv->name, max_voices); |
65 |
glue (s->nb_hw_voices_, TYPE) = 0;
|
66 |
} |
67 |
|
68 |
if (audio_bug (AUDIO_FUNC, voice_size && !max_voices)) {
|
69 |
dolog ("drv=`%s' voice_size=%d max_voices=0\n",
|
70 |
drv->name, voice_size); |
71 |
} |
72 |
} |
73 |
|
74 |
static void glue (audio_pcm_hw_free_resources_, TYPE) (HW *hw) |
75 |
{ |
76 |
if (HWBUF) {
|
77 |
qemu_free (HWBUF); |
78 |
} |
79 |
|
80 |
HWBUF = NULL;
|
81 |
} |
82 |
|
83 |
static int glue (audio_pcm_hw_alloc_resources_, TYPE) (HW *hw) |
84 |
{ |
85 |
HWBUF = audio_calloc (AUDIO_FUNC, hw->samples, sizeof (st_sample_t));
|
86 |
if (!HWBUF) {
|
87 |
dolog ("Could not allocate " NAME " buffer (%d samples)\n", |
88 |
hw->samples); |
89 |
return -1; |
90 |
} |
91 |
|
92 |
return 0; |
93 |
} |
94 |
|
95 |
static void glue (audio_pcm_sw_free_resources_, TYPE) (SW *sw) |
96 |
{ |
97 |
if (sw->buf) {
|
98 |
qemu_free (sw->buf); |
99 |
} |
100 |
|
101 |
if (sw->rate) {
|
102 |
st_rate_stop (sw->rate); |
103 |
} |
104 |
|
105 |
sw->buf = NULL;
|
106 |
sw->rate = NULL;
|
107 |
} |
108 |
|
109 |
static int glue (audio_pcm_sw_alloc_resources_, TYPE) (SW *sw) |
110 |
{ |
111 |
int samples;
|
112 |
|
113 |
#ifdef DAC
|
114 |
samples = sw->hw->samples; |
115 |
#else
|
116 |
samples = ((int64_t) sw->hw->samples << 32) / sw->ratio;
|
117 |
#endif
|
118 |
|
119 |
sw->buf = audio_calloc (AUDIO_FUNC, samples, sizeof (st_sample_t));
|
120 |
if (!sw->buf) {
|
121 |
dolog ("Could not allocate buffer for `%s' (%d samples)\n",
|
122 |
SW_NAME (sw), samples); |
123 |
return -1; |
124 |
} |
125 |
|
126 |
#ifdef DAC
|
127 |
sw->rate = st_rate_start (sw->info.freq, sw->hw->info.freq); |
128 |
#else
|
129 |
sw->rate = st_rate_start (sw->hw->info.freq, sw->info.freq); |
130 |
#endif
|
131 |
if (!sw->rate) {
|
132 |
qemu_free (sw->buf); |
133 |
sw->buf = NULL;
|
134 |
return -1; |
135 |
} |
136 |
return 0; |
137 |
} |
138 |
|
139 |
static int glue (audio_pcm_sw_init_, TYPE) ( |
140 |
SW *sw, |
141 |
HW *hw, |
142 |
const char *name, |
143 |
audsettings_t *as |
144 |
) |
145 |
{ |
146 |
int err;
|
147 |
|
148 |
audio_pcm_init_info (&sw->info, as); |
149 |
sw->hw = hw; |
150 |
sw->active = 0;
|
151 |
#ifdef DAC
|
152 |
sw->ratio = ((int64_t) sw->hw->info.freq << 32) / sw->info.freq;
|
153 |
sw->total_hw_samples_mixed = 0;
|
154 |
sw->empty = 1;
|
155 |
#else
|
156 |
sw->ratio = ((int64_t) sw->info.freq << 32) / sw->hw->info.freq;
|
157 |
#endif
|
158 |
|
159 |
#ifdef DAC
|
160 |
sw->conv = mixeng_conv |
161 |
#else
|
162 |
sw->clip = mixeng_clip |
163 |
#endif
|
164 |
[sw->info.nchannels == 2]
|
165 |
[sw->info.sign] |
166 |
[sw->info.swap_endianness] |
167 |
[audio_bits_to_index (sw->info.bits)]; |
168 |
|
169 |
sw->name = qemu_strdup (name); |
170 |
err = glue (audio_pcm_sw_alloc_resources_, TYPE) (sw); |
171 |
if (err) {
|
172 |
qemu_free (sw->name); |
173 |
sw->name = NULL;
|
174 |
} |
175 |
return err;
|
176 |
} |
177 |
|
178 |
static void glue (audio_pcm_sw_fini_, TYPE) (SW *sw) |
179 |
{ |
180 |
glue (audio_pcm_sw_free_resources_, TYPE) (sw); |
181 |
if (sw->name) {
|
182 |
qemu_free (sw->name); |
183 |
sw->name = NULL;
|
184 |
} |
185 |
} |
186 |
|
187 |
static void glue (audio_pcm_hw_add_sw_, TYPE) (HW *hw, SW *sw) |
188 |
{ |
189 |
LIST_INSERT_HEAD (&hw->sw_head, sw, entries); |
190 |
} |
191 |
|
192 |
static void glue (audio_pcm_hw_del_sw_, TYPE) (SW *sw) |
193 |
{ |
194 |
LIST_REMOVE (sw, entries); |
195 |
} |
196 |
|
197 |
static void glue (audio_pcm_hw_gc_, TYPE) (AudioState *s, HW **hwp) |
198 |
{ |
199 |
HW *hw = *hwp; |
200 |
|
201 |
if (!hw->sw_head.lh_first) {
|
202 |
#ifdef DAC
|
203 |
audio_detach_capture (hw); |
204 |
#endif
|
205 |
LIST_REMOVE (hw, entries); |
206 |
glue (s->nb_hw_voices_, TYPE) += 1;
|
207 |
glue (audio_pcm_hw_free_resources_ ,TYPE) (hw); |
208 |
glue (hw->pcm_ops->fini_, TYPE) (hw); |
209 |
qemu_free (hw); |
210 |
*hwp = NULL;
|
211 |
} |
212 |
} |
213 |
|
214 |
static HW *glue (audio_pcm_hw_find_any_, TYPE) (AudioState *s, HW *hw)
|
215 |
{ |
216 |
return hw ? hw->entries.le_next : s->glue (hw_head_, TYPE).lh_first;
|
217 |
} |
218 |
|
219 |
static HW *glue (audio_pcm_hw_find_any_enabled_, TYPE) (AudioState *s, HW *hw)
|
220 |
{ |
221 |
while ((hw = glue (audio_pcm_hw_find_any_, TYPE) (s, hw))) {
|
222 |
if (hw->enabled) {
|
223 |
return hw;
|
224 |
} |
225 |
} |
226 |
return NULL; |
227 |
} |
228 |
|
229 |
static HW *glue (audio_pcm_hw_find_specific_, TYPE) (
|
230 |
AudioState *s, |
231 |
HW *hw, |
232 |
audsettings_t *as |
233 |
) |
234 |
{ |
235 |
while ((hw = glue (audio_pcm_hw_find_any_, TYPE) (s, hw))) {
|
236 |
if (audio_pcm_info_eq (&hw->info, as)) {
|
237 |
return hw;
|
238 |
} |
239 |
} |
240 |
return NULL; |
241 |
} |
242 |
|
243 |
static HW *glue (audio_pcm_hw_add_new_, TYPE) (AudioState *s, audsettings_t *as)
|
244 |
{ |
245 |
HW *hw; |
246 |
struct audio_driver *drv = s->drv;
|
247 |
|
248 |
if (!glue (s->nb_hw_voices_, TYPE)) {
|
249 |
return NULL; |
250 |
} |
251 |
|
252 |
if (audio_bug (AUDIO_FUNC, !drv)) {
|
253 |
dolog ("No host audio driver\n");
|
254 |
return NULL; |
255 |
} |
256 |
|
257 |
if (audio_bug (AUDIO_FUNC, !drv->pcm_ops)) {
|
258 |
dolog ("Host audio driver without pcm_ops\n");
|
259 |
return NULL; |
260 |
} |
261 |
|
262 |
hw = audio_calloc (AUDIO_FUNC, 1, glue (drv->voice_size_, TYPE));
|
263 |
if (!hw) {
|
264 |
dolog ("Can not allocate voice `%s' size %d\n",
|
265 |
drv->name, glue (drv->voice_size_, TYPE)); |
266 |
return NULL; |
267 |
} |
268 |
|
269 |
hw->pcm_ops = drv->pcm_ops; |
270 |
LIST_INIT (&hw->sw_head); |
271 |
#ifdef DAC
|
272 |
LIST_INIT (&hw->cap_head); |
273 |
#endif
|
274 |
if (glue (hw->pcm_ops->init_, TYPE) (hw, as)) {
|
275 |
goto err0;
|
276 |
} |
277 |
|
278 |
if (audio_bug (AUDIO_FUNC, hw->samples <= 0)) { |
279 |
dolog ("hw->samples=%d\n", hw->samples);
|
280 |
goto err1;
|
281 |
} |
282 |
|
283 |
#ifdef DAC
|
284 |
hw->clip = mixeng_clip |
285 |
#else
|
286 |
hw->conv = mixeng_conv |
287 |
#endif
|
288 |
[hw->info.nchannels == 2]
|
289 |
[hw->info.sign] |
290 |
[hw->info.swap_endianness] |
291 |
[audio_bits_to_index (hw->info.bits)]; |
292 |
|
293 |
if (glue (audio_pcm_hw_alloc_resources_, TYPE) (hw)) {
|
294 |
goto err1;
|
295 |
} |
296 |
|
297 |
LIST_INSERT_HEAD (&s->glue (hw_head_, TYPE), hw, entries); |
298 |
glue (s->nb_hw_voices_, TYPE) -= 1;
|
299 |
#ifdef DAC
|
300 |
audio_attach_capture (s, hw); |
301 |
#endif
|
302 |
return hw;
|
303 |
|
304 |
err1:
|
305 |
glue (hw->pcm_ops->fini_, TYPE) (hw); |
306 |
err0:
|
307 |
qemu_free (hw); |
308 |
return NULL; |
309 |
} |
310 |
|
311 |
static HW *glue (audio_pcm_hw_add_, TYPE) (AudioState *s, audsettings_t *as)
|
312 |
{ |
313 |
HW *hw; |
314 |
|
315 |
if (glue (conf.fixed_, TYPE).enabled && glue (conf.fixed_, TYPE).greedy) {
|
316 |
hw = glue (audio_pcm_hw_add_new_, TYPE) (s, as); |
317 |
if (hw) {
|
318 |
return hw;
|
319 |
} |
320 |
} |
321 |
|
322 |
hw = glue (audio_pcm_hw_find_specific_, TYPE) (s, NULL, as);
|
323 |
if (hw) {
|
324 |
return hw;
|
325 |
} |
326 |
|
327 |
hw = glue (audio_pcm_hw_add_new_, TYPE) (s, as); |
328 |
if (hw) {
|
329 |
return hw;
|
330 |
} |
331 |
|
332 |
return glue (audio_pcm_hw_find_any_, TYPE) (s, NULL); |
333 |
} |
334 |
|
335 |
static SW *glue (audio_pcm_create_voice_pair_, TYPE) (
|
336 |
AudioState *s, |
337 |
const char *sw_name, |
338 |
audsettings_t *as |
339 |
) |
340 |
{ |
341 |
SW *sw; |
342 |
HW *hw; |
343 |
audsettings_t hw_as; |
344 |
|
345 |
if (glue (conf.fixed_, TYPE).enabled) {
|
346 |
hw_as = glue (conf.fixed_, TYPE).settings; |
347 |
} |
348 |
else {
|
349 |
hw_as = *as; |
350 |
} |
351 |
|
352 |
sw = audio_calloc (AUDIO_FUNC, 1, sizeof (*sw)); |
353 |
if (!sw) {
|
354 |
dolog ("Could not allocate soft voice `%s' (%zu bytes)\n",
|
355 |
sw_name ? sw_name : "unknown", sizeof (*sw)); |
356 |
goto err1;
|
357 |
} |
358 |
|
359 |
hw = glue (audio_pcm_hw_add_, TYPE) (s, &hw_as); |
360 |
if (!hw) {
|
361 |
goto err2;
|
362 |
} |
363 |
|
364 |
glue (audio_pcm_hw_add_sw_, TYPE) (hw, sw); |
365 |
|
366 |
if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, sw_name, as)) {
|
367 |
goto err3;
|
368 |
} |
369 |
|
370 |
return sw;
|
371 |
|
372 |
err3:
|
373 |
glue (audio_pcm_hw_del_sw_, TYPE) (sw); |
374 |
glue (audio_pcm_hw_gc_, TYPE) (s, &hw); |
375 |
err2:
|
376 |
qemu_free (sw); |
377 |
err1:
|
378 |
return NULL; |
379 |
} |
380 |
|
381 |
static void glue (audio_close_, TYPE) (AudioState *s, SW *sw) |
382 |
{ |
383 |
glue (audio_pcm_sw_fini_, TYPE) (sw); |
384 |
glue (audio_pcm_hw_del_sw_, TYPE) (sw); |
385 |
glue (audio_pcm_hw_gc_, TYPE) (s, &sw->hw); |
386 |
qemu_free (sw); |
387 |
} |
388 |
|
389 |
void glue (AUD_close_, TYPE) (QEMUSoundCard *card, SW *sw)
|
390 |
{ |
391 |
if (sw) {
|
392 |
if (audio_bug (AUDIO_FUNC, !card || !card->audio)) {
|
393 |
dolog ("card=%p card->audio=%p\n",
|
394 |
card, card ? card->audio : NULL);
|
395 |
return;
|
396 |
} |
397 |
|
398 |
glue (audio_close_, TYPE) (card->audio, sw); |
399 |
} |
400 |
} |
401 |
|
402 |
SW *glue (AUD_open_, TYPE) ( |
403 |
QEMUSoundCard *card, |
404 |
SW *sw, |
405 |
const char *name, |
406 |
void *callback_opaque ,
|
407 |
audio_callback_fn_t callback_fn, |
408 |
audsettings_t *as |
409 |
) |
410 |
{ |
411 |
AudioState *s; |
412 |
#ifdef DAC
|
413 |
int live = 0; |
414 |
SW *old_sw = NULL;
|
415 |
#endif
|
416 |
|
417 |
ldebug ("open %s, freq %d, nchannels %d, fmt %d\n",
|
418 |
name, as->freq, as->nchannels, as->fmt); |
419 |
|
420 |
if (audio_bug (AUDIO_FUNC,
|
421 |
!card || !card->audio || !name || !callback_fn || !as)) { |
422 |
dolog ("card=%p card->audio=%p name=%p callback_fn=%p as=%p\n",
|
423 |
card, card ? card->audio : NULL, name, callback_fn, as);
|
424 |
goto fail;
|
425 |
} |
426 |
|
427 |
s = card->audio; |
428 |
|
429 |
if (audio_bug (AUDIO_FUNC, audio_validate_settings (as))) {
|
430 |
audio_print_settings (as); |
431 |
goto fail;
|
432 |
} |
433 |
|
434 |
if (audio_bug (AUDIO_FUNC, !s->drv)) {
|
435 |
dolog ("Can not open `%s' (no host audio driver)\n", name);
|
436 |
goto fail;
|
437 |
} |
438 |
|
439 |
if (sw && audio_pcm_info_eq (&sw->info, as)) {
|
440 |
return sw;
|
441 |
} |
442 |
|
443 |
#ifdef DAC
|
444 |
if (conf.plive && sw && (!sw->active && !sw->empty)) {
|
445 |
live = sw->total_hw_samples_mixed; |
446 |
|
447 |
#ifdef DEBUG_PLIVE
|
448 |
dolog ("Replacing voice %s with %d live samples\n", SW_NAME (sw), live);
|
449 |
dolog ("Old %s freq %d, bits %d, channels %d\n",
|
450 |
SW_NAME (sw), sw->info.freq, sw->info.bits, sw->info.nchannels); |
451 |
dolog ("New %s freq %d, bits %d, channels %d\n",
|
452 |
name, |
453 |
freq, |
454 |
(fmt == AUD_FMT_S16 || fmt == AUD_FMT_U16) ? 16 : 8, |
455 |
nchannels); |
456 |
#endif
|
457 |
|
458 |
if (live) {
|
459 |
old_sw = sw; |
460 |
old_sw->callback.fn = NULL;
|
461 |
sw = NULL;
|
462 |
} |
463 |
} |
464 |
#endif
|
465 |
|
466 |
if (!glue (conf.fixed_, TYPE).enabled && sw) {
|
467 |
glue (AUD_close_, TYPE) (card, sw); |
468 |
sw = NULL;
|
469 |
} |
470 |
|
471 |
if (sw) {
|
472 |
HW *hw = sw->hw; |
473 |
|
474 |
if (!hw) {
|
475 |
dolog ("Internal logic error voice `%s' has no hardware store\n",
|
476 |
SW_NAME (sw)); |
477 |
goto fail;
|
478 |
} |
479 |
|
480 |
glue (audio_pcm_sw_fini_, TYPE) (sw); |
481 |
if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, name, as)) {
|
482 |
goto fail;
|
483 |
} |
484 |
} |
485 |
else {
|
486 |
sw = glue (audio_pcm_create_voice_pair_, TYPE) (s, name, as); |
487 |
if (!sw) {
|
488 |
dolog ("Failed to create voice `%s'\n", name);
|
489 |
return NULL; |
490 |
} |
491 |
} |
492 |
|
493 |
if (sw) {
|
494 |
sw->vol = nominal_volume; |
495 |
sw->callback.fn = callback_fn; |
496 |
sw->callback.opaque = callback_opaque; |
497 |
|
498 |
#ifdef DAC
|
499 |
if (live) {
|
500 |
int mixed =
|
501 |
(live << old_sw->info.shift) |
502 |
* old_sw->info.bytes_per_second |
503 |
/ sw->info.bytes_per_second; |
504 |
|
505 |
#ifdef DEBUG_PLIVE
|
506 |
dolog ("Silence will be mixed %d\n", mixed);
|
507 |
#endif
|
508 |
sw->total_hw_samples_mixed += mixed; |
509 |
} |
510 |
#endif
|
511 |
|
512 |
#ifdef DEBUG_AUDIO
|
513 |
dolog ("%s\n", name);
|
514 |
audio_pcm_print_info ("hw", &sw->hw->info);
|
515 |
audio_pcm_print_info ("sw", &sw->info);
|
516 |
#endif
|
517 |
} |
518 |
|
519 |
return sw;
|
520 |
|
521 |
fail:
|
522 |
glue (AUD_close_, TYPE) (card, sw); |
523 |
return NULL; |
524 |
} |
525 |
|
526 |
int glue (AUD_is_active_, TYPE) (SW *sw)
|
527 |
{ |
528 |
return sw ? sw->active : 0; |
529 |
} |
530 |
|
531 |
void glue (AUD_init_time_stamp_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts)
|
532 |
{ |
533 |
if (!sw) {
|
534 |
return;
|
535 |
} |
536 |
|
537 |
ts->old_ts = sw->hw->ts_helper; |
538 |
} |
539 |
|
540 |
uint64_t glue (AUD_get_elapsed_usec_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts) |
541 |
{ |
542 |
uint64_t delta, cur_ts, old_ts; |
543 |
|
544 |
if (!sw) {
|
545 |
return 0; |
546 |
} |
547 |
|
548 |
cur_ts = sw->hw->ts_helper; |
549 |
old_ts = ts->old_ts; |
550 |
/* dolog ("cur %lld old %lld\n", cur_ts, old_ts); */
|
551 |
|
552 |
if (cur_ts >= old_ts) {
|
553 |
delta = cur_ts - old_ts; |
554 |
} |
555 |
else {
|
556 |
delta = UINT64_MAX - old_ts + cur_ts; |
557 |
} |
558 |
|
559 |
if (!delta) {
|
560 |
return 0; |
561 |
} |
562 |
|
563 |
return (delta * sw->hw->info.freq) / 1000000; |
564 |
} |
565 |
|
566 |
#undef TYPE
|
567 |
#undef HW
|
568 |
#undef SW
|
569 |
#undef HWBUF
|
570 |
#undef NAME
|