2 * QEMU Audio subsystem header
4 * Copyright (c) 2005 Vassili Karpov (malc)
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
26 #define NAME "playback"
27 #define HWBUF hw->mix_buf
32 #define NAME "capture"
36 #define HWBUF hw->conv_buf
39 static void glue (audio_init_nb_voices_, TYPE) (struct audio_driver *drv)
41 AudioState *s = &glob_audio_state;
42 int max_voices = glue (drv->max_voices_, TYPE);
43 int voice_size = glue (drv->voice_size_, TYPE);
45 if (glue (s->nb_hw_voices_, TYPE) > max_voices) {
48 dolog ("Driver `%s' does not support " NAME "\n", drv->name);
52 dolog ("Driver `%s' does not support %d " NAME " voices, max %d\n",
54 glue (s->nb_hw_voices_, TYPE),
57 glue (s->nb_hw_voices_, TYPE) = max_voices;
60 if (audio_bug (AUDIO_FUNC, !voice_size && max_voices)) {
61 dolog ("drv=`%s' voice_size=0 max_voices=%d\n",
62 drv->name, max_voices);
63 glue (s->nb_hw_voices_, TYPE) = 0;
66 if (audio_bug (AUDIO_FUNC, voice_size && !max_voices)) {
67 dolog ("drv=`%s' voice_size=%d max_voices=0\n",
68 drv->name, voice_size);
72 static void glue (audio_pcm_hw_free_resources_, TYPE) (HW *hw)
81 static int glue (audio_pcm_hw_alloc_resources_, TYPE) (HW *hw)
83 HWBUF = audio_calloc (AUDIO_FUNC, hw->samples, sizeof (struct st_sample));
85 dolog ("Could not allocate " NAME " buffer (%d samples)\n",
93 static void glue (audio_pcm_sw_free_resources_, TYPE) (SW *sw)
100 st_rate_stop (sw->rate);
107 static int glue (audio_pcm_sw_alloc_resources_, TYPE) (SW *sw)
112 samples = sw->hw->samples;
114 samples = ((int64_t) sw->hw->samples << 32) / sw->ratio;
117 sw->buf = audio_calloc (AUDIO_FUNC, samples, sizeof (struct st_sample));
119 dolog ("Could not allocate buffer for `%s' (%d samples)\n",
120 SW_NAME (sw), samples);
125 sw->rate = st_rate_start (sw->info.freq, sw->hw->info.freq);
127 sw->rate = st_rate_start (sw->hw->info.freq, sw->info.freq);
137 static int glue (audio_pcm_sw_init_, TYPE) (
141 struct audsettings *as
146 audio_pcm_init_info (&sw->info, as);
150 sw->ratio = ((int64_t) sw->hw->info.freq << 32) / sw->info.freq;
151 sw->total_hw_samples_mixed = 0;
154 sw->ratio = ((int64_t) sw->info.freq << 32) / sw->hw->info.freq;
158 sw->conv = mixeng_conv
160 sw->clip = mixeng_clip
162 [sw->info.nchannels == 2]
164 [sw->info.swap_endianness]
165 [audio_bits_to_index (sw->info.bits)];
167 sw->name = qemu_strdup (name);
168 err = glue (audio_pcm_sw_alloc_resources_, TYPE) (sw);
170 qemu_free (sw->name);
176 static void glue (audio_pcm_sw_fini_, TYPE) (SW *sw)
178 glue (audio_pcm_sw_free_resources_, TYPE) (sw);
180 qemu_free (sw->name);
185 static void glue (audio_pcm_hw_add_sw_, TYPE) (HW *hw, SW *sw)
187 QLIST_INSERT_HEAD (&hw->sw_head, sw, entries);
190 static void glue (audio_pcm_hw_del_sw_, TYPE) (SW *sw)
192 QLIST_REMOVE (sw, entries);
195 static void glue (audio_pcm_hw_gc_, TYPE) (HW **hwp)
197 AudioState *s = &glob_audio_state;
200 if (!hw->sw_head.lh_first) {
202 audio_detach_capture (hw);
204 QLIST_REMOVE (hw, entries);
205 glue (s->nb_hw_voices_, TYPE) += 1;
206 glue (audio_pcm_hw_free_resources_ ,TYPE) (hw);
207 glue (hw->pcm_ops->fini_, TYPE) (hw);
213 static HW *glue (audio_pcm_hw_find_any_, TYPE) (HW *hw)
215 AudioState *s = &glob_audio_state;
216 return hw ? hw->entries.le_next : glue (s->hw_head_, TYPE).lh_first;
219 static HW *glue (audio_pcm_hw_find_any_enabled_, TYPE) (HW *hw)
221 while ((hw = glue (audio_pcm_hw_find_any_, TYPE) (hw))) {
229 static HW *glue (audio_pcm_hw_find_specific_, TYPE) (
231 struct audsettings *as
234 while ((hw = glue (audio_pcm_hw_find_any_, TYPE) (hw))) {
235 if (audio_pcm_info_eq (&hw->info, as)) {
242 static HW *glue (audio_pcm_hw_add_new_, TYPE) (struct audsettings *as)
245 AudioState *s = &glob_audio_state;
246 struct audio_driver *drv = s->drv;
248 if (!glue (s->nb_hw_voices_, TYPE)) {
252 if (audio_bug (AUDIO_FUNC, !drv)) {
253 dolog ("No host audio driver\n");
257 if (audio_bug (AUDIO_FUNC, !drv->pcm_ops)) {
258 dolog ("Host audio driver without pcm_ops\n");
262 hw = audio_calloc (AUDIO_FUNC, 1, glue (drv->voice_size_, TYPE));
264 dolog ("Can not allocate voice `%s' size %d\n",
265 drv->name, glue (drv->voice_size_, TYPE));
269 hw->pcm_ops = drv->pcm_ops;
270 QLIST_INIT (&hw->sw_head);
272 QLIST_INIT (&hw->cap_head);
274 if (glue (hw->pcm_ops->init_, TYPE) (hw, as)) {
278 if (audio_bug (AUDIO_FUNC, hw->samples <= 0)) {
279 dolog ("hw->samples=%d\n", hw->samples);
284 hw->clip = mixeng_clip
286 hw->conv = mixeng_conv
288 [hw->info.nchannels == 2]
290 [hw->info.swap_endianness]
291 [audio_bits_to_index (hw->info.bits)];
293 if (glue (audio_pcm_hw_alloc_resources_, TYPE) (hw)) {
297 QLIST_INSERT_HEAD (&s->glue (hw_head_, TYPE), hw, entries);
298 glue (s->nb_hw_voices_, TYPE) -= 1;
300 audio_attach_capture (hw);
305 glue (hw->pcm_ops->fini_, TYPE) (hw);
311 static HW *glue (audio_pcm_hw_add_, TYPE) (struct audsettings *as)
315 if (glue (conf.fixed_, TYPE).enabled && glue (conf.fixed_, TYPE).greedy) {
316 hw = glue (audio_pcm_hw_add_new_, TYPE) (as);
322 hw = glue (audio_pcm_hw_find_specific_, TYPE) (NULL, as);
327 hw = glue (audio_pcm_hw_add_new_, TYPE) (as);
332 return glue (audio_pcm_hw_find_any_, TYPE) (NULL);
335 static SW *glue (audio_pcm_create_voice_pair_, TYPE) (
337 struct audsettings *as
342 struct audsettings hw_as;
344 if (glue (conf.fixed_, TYPE).enabled) {
345 hw_as = glue (conf.fixed_, TYPE).settings;
351 sw = audio_calloc (AUDIO_FUNC, 1, sizeof (*sw));
353 dolog ("Could not allocate soft voice `%s' (%zu bytes)\n",
354 sw_name ? sw_name : "unknown", sizeof (*sw));
358 hw = glue (audio_pcm_hw_add_, TYPE) (&hw_as);
363 glue (audio_pcm_hw_add_sw_, TYPE) (hw, sw);
365 if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, sw_name, as)) {
372 glue (audio_pcm_hw_del_sw_, TYPE) (sw);
373 glue (audio_pcm_hw_gc_, TYPE) (&hw);
380 static void glue (audio_close_, TYPE) (SW *sw)
382 glue (audio_pcm_sw_fini_, TYPE) (sw);
383 glue (audio_pcm_hw_del_sw_, TYPE) (sw);
384 glue (audio_pcm_hw_gc_, TYPE) (&sw->hw);
388 void glue (AUD_close_, TYPE) (QEMUSoundCard *card, SW *sw)
391 if (audio_bug (AUDIO_FUNC, !card)) {
392 dolog ("card=%p\n", card);
396 glue (audio_close_, TYPE) (sw);
400 SW *glue (AUD_open_, TYPE) (
404 void *callback_opaque ,
405 audio_callback_fn callback_fn,
406 struct audsettings *as
409 AudioState *s = &glob_audio_state;
415 ldebug ("open %s, freq %d, nchannels %d, fmt %d\n",
416 name, as->freq, as->nchannels, as->fmt);
418 if (audio_bug (AUDIO_FUNC, !card || !name || !callback_fn || !as)) {
419 dolog ("card=%p name=%p callback_fn=%p as=%p\n",
420 card, name, callback_fn, as);
424 if (audio_bug (AUDIO_FUNC, audio_validate_settings (as))) {
425 audio_print_settings (as);
429 if (audio_bug (AUDIO_FUNC, !s->drv)) {
430 dolog ("Can not open `%s' (no host audio driver)\n", name);
434 if (sw && audio_pcm_info_eq (&sw->info, as)) {
439 if (conf.plive && sw && (!sw->active && !sw->empty)) {
440 live = sw->total_hw_samples_mixed;
443 dolog ("Replacing voice %s with %d live samples\n", SW_NAME (sw), live);
444 dolog ("Old %s freq %d, bits %d, channels %d\n",
445 SW_NAME (sw), sw->info.freq, sw->info.bits, sw->info.nchannels);
446 dolog ("New %s freq %d, bits %d, channels %d\n",
449 (as->fmt == AUD_FMT_S16 || as->fmt == AUD_FMT_U16) ? 16 : 8,
455 old_sw->callback.fn = NULL;
461 if (!glue (conf.fixed_, TYPE).enabled && sw) {
462 glue (AUD_close_, TYPE) (card, sw);
470 dolog ("Internal logic error voice `%s' has no hardware store\n",
475 glue (audio_pcm_sw_fini_, TYPE) (sw);
476 if (glue (audio_pcm_sw_init_, TYPE) (sw, hw, name, as)) {
481 sw = glue (audio_pcm_create_voice_pair_, TYPE) (name, as);
483 dolog ("Failed to create voice `%s'\n", name);
489 sw->vol = nominal_volume;
490 sw->callback.fn = callback_fn;
491 sw->callback.opaque = callback_opaque;
496 (live << old_sw->info.shift)
497 * old_sw->info.bytes_per_second
498 / sw->info.bytes_per_second;
501 dolog ("Silence will be mixed %d\n", mixed);
503 sw->total_hw_samples_mixed += mixed;
508 dolog ("%s\n", name);
509 audio_pcm_print_info ("hw", &sw->hw->info);
510 audio_pcm_print_info ("sw", &sw->info);
516 glue (AUD_close_, TYPE) (card, sw);
520 int glue (AUD_is_active_, TYPE) (SW *sw)
522 return sw ? sw->active : 0;
525 void glue (AUD_init_time_stamp_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts)
531 ts->old_ts = sw->hw->ts_helper;
534 uint64_t glue (AUD_get_elapsed_usec_, TYPE) (SW *sw, QEMUAudioTimeStamp *ts)
536 uint64_t delta, cur_ts, old_ts;
542 cur_ts = sw->hw->ts_helper;
544 /* dolog ("cur %lld old %lld\n", cur_ts, old_ts); */
546 if (cur_ts >= old_ts) {
547 delta = cur_ts - old_ts;
550 delta = UINT64_MAX - old_ts + cur_ts;
557 return muldiv64 (delta, sw->hw->info.freq, 1000000);