1 /***
2 This file is part of PulseAudio.
3
4 Copyright 2009,2010 Daniel Mack <daniel@caiaq.de>
5
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
10
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
15
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
18 ***/
19
20 /* TODO:
21 - implement hardware volume controls
22 - handle audio device stream format changes (will require changes to the core)
23 - add an "off" mode that removes all sinks and sources
24 */
25
26 #ifdef HAVE_CONFIG_H
27 #include <config.h>
28 #endif
29
30 #include <pulse/util.h>
31 #include <pulse/xmalloc.h>
32
33 #include <pulsecore/sink.h>
34 #include <pulsecore/source.h>
35 #include <pulsecore/module.h>
36 #include <pulsecore/sample-util.h>
37 #include <pulsecore/core-util.h>
38 #include <pulsecore/modargs.h>
39 #include <pulsecore/log.h>
40 #include <pulsecore/macro.h>
41 #include <pulsecore/llist.h>
42 #include <pulsecore/card.h>
43 #include <pulsecore/strbuf.h>
44 #include <pulsecore/thread.h>
45 #include <pulsecore/thread-mq.h>
46 #include <pulsecore/i18n.h>
47
48 #include <CoreAudio/CoreAudio.h>
49 #include <CoreAudio/CoreAudioTypes.h>
50 #include <CoreAudio/AudioHardware.h>
51
52 #define DEFAULT_FRAMES_PER_IOPROC 512
53
54 PA_MODULE_AUTHOR("Daniel Mack");
55 PA_MODULE_DESCRIPTION("CoreAudio device");
56 PA_MODULE_VERSION(PACKAGE_VERSION);
57 PA_MODULE_LOAD_ONCE(false);
58 PA_MODULE_USAGE("object_id=<the CoreAudio device id> "
59 "ioproc_frames=<audio frames per IOProc call> "
60 "record=<enable source?> "
61 "playback=<enable sink?> ");
62
63 static const char* const valid_modargs[] = {
64 "object_id",
65 "ioproc_frames",
66 "record",
67 "playback",
68 NULL
69 };
70
71 enum {
72 CA_MESSAGE_RENDER = PA_SINK_MESSAGE_MAX,
73 };
74
75 typedef struct coreaudio_sink coreaudio_sink;
76 typedef struct coreaudio_source coreaudio_source;
77
78 struct userdata {
79 AudioObjectID object_id;
80 AudioDeviceIOProcID proc_id;
81
82 pa_thread_mq thread_mq;
83 pa_asyncmsgq *async_msgq;
84
85 pa_rtpoll *rtpoll;
86 pa_thread *thread;
87
88 pa_module *module;
89 pa_card *card;
90 bool running;
91
92 char *device_name, *vendor_name;
93
94 const AudioBufferList *render_input_data;
95 AudioBufferList *render_output_data;
96
97 AudioStreamBasicDescription stream_description;
98
99 PA_LLIST_HEAD(coreaudio_sink, sinks);
100 PA_LLIST_HEAD(coreaudio_source, sources);
101 };
102
103 struct coreaudio_sink {
104 pa_sink *pa_sink;
105 struct userdata *userdata;
106
107 char *name;
108 unsigned int channel_idx;
109 bool active;
110
111 pa_channel_map map;
112 pa_sample_spec ss;
113
114 PA_LLIST_FIELDS(coreaudio_sink);
115 };
116
117 struct coreaudio_source {
118 pa_source *pa_source;
119 struct userdata *userdata;
120
121 char *name;
122 unsigned int channel_idx;
123 bool active;
124
125 pa_channel_map map;
126 pa_sample_spec ss;
127
128 PA_LLIST_FIELDS(coreaudio_source);
129 };
130
card_set_profile(pa_card * c,pa_card_profile * new_profile)131 static int card_set_profile(pa_card *c, pa_card_profile *new_profile) {
132 return 0;
133 }
134
io_render_proc(AudioDeviceID device,const AudioTimeStamp * now,const AudioBufferList * inputData,const AudioTimeStamp * inputTime,AudioBufferList * outputData,const AudioTimeStamp * outputTime,void * clientData)135 static OSStatus io_render_proc (AudioDeviceID device,
136 const AudioTimeStamp *now,
137 const AudioBufferList *inputData,
138 const AudioTimeStamp *inputTime,
139 AudioBufferList *outputData,
140 const AudioTimeStamp *outputTime,
141 void *clientData) {
142 struct userdata *u = clientData;
143
144 pa_assert(u);
145 pa_assert(device == u->object_id);
146
147 u->render_input_data = inputData;
148 u->render_output_data = outputData;
149
150 if (u->sinks)
151 pa_assert_se(pa_asyncmsgq_send(u->async_msgq, PA_MSGOBJECT(u->sinks->pa_sink),
152 CA_MESSAGE_RENDER, NULL, 0, NULL) == 0);
153
154 if (u->sources)
155 pa_assert_se(pa_asyncmsgq_send(u->async_msgq, PA_MSGOBJECT(u->sources->pa_source),
156 CA_MESSAGE_RENDER, NULL, 0, NULL) == 0);
157
158 return 0;
159 }
160
ca_stream_format_changed(AudioObjectID objectID,UInt32 numberAddresses,const AudioObjectPropertyAddress addresses[],void * clientData)161 static OSStatus ca_stream_format_changed(AudioObjectID objectID,
162 UInt32 numberAddresses,
163 const AudioObjectPropertyAddress addresses[],
164 void *clientData) {
165 struct userdata *u = clientData;
166 UInt32 i;
167
168 pa_assert(u);
169
170 /* REVISIT: PA can't currently handle external format change requests.
171 * Hence, we set the original format back in this callback to avoid horrible audio artefacts.
172 * The device settings will appear to be 'locked' for any application as long as the PA daemon is running.
173 * Once we're able to propagate such events up in the core, this needs to be changed. */
174
175 for (i = 0; i < numberAddresses; i++)
176 AudioObjectSetPropertyData(objectID, addresses + i, 0, NULL, sizeof(u->stream_description), &u->stream_description);
177
178 return 0;
179 }
180
get_latency_us(pa_object * o)181 static pa_usec_t get_latency_us(pa_object *o) {
182 struct userdata *u;
183 pa_sample_spec *ss;
184 bool is_source;
185 UInt32 v = 0, total = 0;
186 OSStatus err;
187 UInt32 size = sizeof(v);
188 AudioObjectPropertyAddress property_address;
189 AudioObjectID stream_id;
190
191 if (pa_sink_isinstance(o)) {
192 coreaudio_sink *sink = PA_SINK(o)->userdata;
193
194 u = sink->userdata;
195 ss = &sink->ss;
196 is_source = false;
197 } else if (pa_source_isinstance(o)) {
198 coreaudio_source *source = PA_SOURCE(o)->userdata;
199
200 u = source->userdata;
201 ss = &source->ss;
202 is_source = true;
203 } else
204 pa_assert_not_reached();
205
206 pa_assert(u);
207
208 property_address.mScope = is_source ? kAudioDevicePropertyScopeInput : kAudioDevicePropertyScopeOutput;
209 property_address.mElement = kAudioObjectPropertyElementMaster;
210
211 /* get the device latency */
212 property_address.mSelector = kAudioDevicePropertyLatency;
213 size = sizeof(v);
214 err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, &v);
215 if (!err)
216 total += v;
217 else
218 pa_log_warn("Failed to get device latency: %d", err);
219
220 /* the IOProc buffer size */
221 property_address.mSelector = kAudioDevicePropertyBufferFrameSize;
222 size = sizeof(v);
223 err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, &v);
224 if (!err)
225 total += v;
226 else
227 pa_log_warn("Failed to get buffer frame size: %d", err);
228
229 /* IOProc safety offset - this value is the same for both directions, hence we divide it by 2 */
230 property_address.mSelector = kAudioDevicePropertySafetyOffset;
231 size = sizeof(v);
232 err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, &v);
233 if (!err)
234 total += v / 2;
235 else
236 pa_log_warn("Failed to get safety offset: %d", err);
237
238 /* get the stream latency.
239 * FIXME: this assumes the stream latency is the same for all streams */
240 property_address.mSelector = kAudioDevicePropertyStreams;
241 size = sizeof(stream_id);
242 err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, &stream_id);
243 if (!err) {
244 property_address.mSelector = kAudioStreamPropertyLatency;
245 property_address.mScope = kAudioObjectPropertyScopeGlobal;
246 size = sizeof(v);
247 err = AudioObjectGetPropertyData(stream_id, &property_address, 0, NULL, &size, &v);
248 if (!err)
249 total += v;
250 else
251 pa_log_warn("Failed to get stream latency: %d", err);
252 } else
253 pa_log_warn("Failed to get streams: %d", err);
254
255 return pa_bytes_to_usec(total * pa_frame_size(ss), ss);
256 }
257
ca_device_check_device_state(struct userdata * u)258 static void ca_device_check_device_state(struct userdata *u) {
259 coreaudio_sink *ca_sink;
260 coreaudio_source *ca_source;
261 bool active = false;
262
263 pa_assert(u);
264
265 for (ca_sink = u->sinks; ca_sink; ca_sink = ca_sink->next)
266 if (ca_sink->active)
267 active = true;
268
269 for (ca_source = u->sources; ca_source; ca_source = ca_source->next)
270 if (ca_source->active)
271 active = true;
272
273 if (active && !u->running)
274 AudioDeviceStart(u->object_id, u->proc_id);
275 else if (!active && u->running)
276 AudioDeviceStop(u->object_id, u->proc_id);
277
278 u->running = active;
279 }
280
sink_process_msg(pa_msgobject * o,int code,void * data,int64_t offset,pa_memchunk * chunk)281 static int sink_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
282 coreaudio_sink *sink = PA_SINK(o)->userdata;
283 struct userdata *u = sink->userdata;
284 unsigned int i;
285 pa_memchunk audio_chunk;
286
287 switch (code) {
288 case CA_MESSAGE_RENDER: {
289 /* audio out */
290 for (i = 0; i < u->render_output_data->mNumberBuffers; i++) {
291 AudioBuffer *buf = u->render_output_data->mBuffers + i;
292
293 pa_assert(sink);
294
295 if (PA_SINK_IS_OPENED(sink->pa_sink->thread_info.state)) {
296 audio_chunk.memblock = pa_memblock_new_fixed(u->module->core->mempool, buf->mData, buf->mDataByteSize, false);
297 audio_chunk.length = buf->mDataByteSize;
298 audio_chunk.index = 0;
299
300 pa_sink_render_into_full(sink->pa_sink, &audio_chunk);
301 pa_memblock_unref_fixed(audio_chunk.memblock);
302 }
303
304 sink = sink->next;
305 }
306
307 return 0;
308 }
309
310 case PA_SINK_MESSAGE_GET_LATENCY: {
311 *((int64_t *) data) = get_latency_us(PA_OBJECT(o));
312 return 0;
313 }
314 }
315
316 return pa_sink_process_msg(o, code, data, offset, chunk);
317 }
318
source_process_msg(pa_msgobject * o,int code,void * data,int64_t offset,pa_memchunk * chunk)319 static int source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
320 coreaudio_source *source = PA_SOURCE(o)->userdata;
321 struct userdata *u = source->userdata;
322 unsigned int i;
323 pa_memchunk audio_chunk;
324
325 switch (code) {
326 case CA_MESSAGE_RENDER: {
327 /* audio in */
328 for (i = 0; i < u->render_input_data->mNumberBuffers; i++) {
329 const AudioBuffer *buf = u->render_input_data->mBuffers + i;
330
331 pa_assert(source);
332
333 if (PA_SOURCE_IS_OPENED(source->pa_source->thread_info.state)) {
334 audio_chunk.memblock = pa_memblock_new_fixed(u->module->core->mempool, buf->mData, buf->mDataByteSize, true);
335 audio_chunk.length = buf->mDataByteSize;
336 audio_chunk.index = 0;
337
338 pa_source_post(source->pa_source, &audio_chunk);
339 pa_memblock_unref_fixed(audio_chunk.memblock);
340 }
341
342 source = source->next;
343 }
344
345 return 0;
346 }
347
348 case PA_SOURCE_MESSAGE_GET_LATENCY: {
349 *((int64_t *) data) = get_latency_us(PA_OBJECT(o));
350 return 0;
351 }
352 }
353
354 return pa_source_process_msg(o, code, data, offset, chunk);;
355 }
356
ca_sink_set_state_in_main_thread(pa_sink * s,pa_sink_state_t state,pa_suspend_cause_t suspend_cause)357 static int ca_sink_set_state_in_main_thread(pa_sink *s, pa_sink_state_t state, pa_suspend_cause_t suspend_cause) {
358 coreaudio_sink *sink = s->userdata;
359
360 switch (state) {
361 case PA_SINK_SUSPENDED:
362 case PA_SINK_IDLE:
363 sink->active = false;
364 break;
365
366 case PA_SINK_RUNNING:
367 sink->active = true;
368 break;
369
370 case PA_SINK_UNLINKED:
371 case PA_SINK_INIT:
372 case PA_SINK_INVALID_STATE:
373 ;
374 }
375
376 ca_device_check_device_state(sink->userdata);
377
378 return 0;
379 }
380
381 /* Caveat: The caller is responsible to get rid of the CFString(Ref). */
CFString_to_cstr(CFStringRef cfstr)382 static char * CFString_to_cstr(CFStringRef cfstr) {
383 char *ret = NULL;
384
385 if (cfstr != NULL) {
386 const char *tmp = CFStringGetCStringPtr(cfstr, kCFStringEncodingUTF8);
387 CFIndex n = CFStringGetLength(cfstr) + 1 /* for the terminating NULL */;
388
389 ret = pa_xmalloc(n);
390
391 if (tmp == NULL) {
392 if (!CFStringGetCString(cfstr, ret, n, kCFStringEncodingUTF8)) {
393 pa_xfree(ret);
394 ret = NULL;
395 }
396 } else {
397 strncpy(ret, tmp, n - 1);
398 ret[n - 1] = '\0';
399 }
400 }
401
402 return ret;
403 }
404
ca_device_create_sink(pa_module * m,AudioBuffer * buf,int channel_idx)405 static int ca_device_create_sink(pa_module *m, AudioBuffer *buf, int channel_idx) {
406 OSStatus err;
407 UInt32 size;
408 struct userdata *u = m->userdata;
409 pa_sink_new_data new_data;
410 pa_sink_flags_t flags = PA_SINK_LATENCY | PA_SINK_HARDWARE;
411 coreaudio_sink *ca_sink;
412 pa_sink *sink;
413 unsigned int i;
414 char *tmp = NULL;
415 pa_strbuf *strbuf;
416 AudioObjectPropertyAddress property_address;
417 CFStringRef tmp_cfstr = NULL;
418
419 if (buf->mNumberChannels > PA_CHANNELS_MAX) {
420 pa_log("Skipping device with more channels than we support (%u)", (unsigned int) buf->mNumberChannels);
421 return -1;
422 }
423
424 ca_sink = pa_xnew0(coreaudio_sink, 1);
425 ca_sink->map.channels = buf->mNumberChannels;
426 ca_sink->ss.channels = buf->mNumberChannels;
427 ca_sink->channel_idx = channel_idx;
428
429 /* build a name for this stream */
430 strbuf = pa_strbuf_new();
431
432 for (i = 0; i < buf->mNumberChannels; i++) {
433 property_address.mSelector = kAudioObjectPropertyElementName;
434 property_address.mScope = kAudioDevicePropertyScopeOutput;
435 property_address.mElement = channel_idx + i + 1;
436 size = sizeof(tmp_cfstr);
437 err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, &tmp_cfstr);
438 if (err == 0) {
439 tmp = CFString_to_cstr(tmp_cfstr);
440
441 if (tmp_cfstr)
442 CFRelease(tmp_cfstr);
443 }
444
445 if (i > 0)
446 pa_strbuf_puts(strbuf, ", ");
447
448 if (err || !tmp || !strlen(tmp))
449 pa_strbuf_printf(strbuf, "Channel %d", (int) property_address.mElement);
450 else
451 pa_strbuf_puts(strbuf, tmp);
452
453 pa_xfree(tmp);
454 tmp = NULL;
455 }
456
457 ca_sink->name = pa_strbuf_to_string_free(strbuf);
458
459 pa_log_debug("Stream name is >%s<", ca_sink->name);
460
461 /* default to mono streams */
462 for (i = 0; i < ca_sink->map.channels; i++)
463 ca_sink->map.map[i] = PA_CHANNEL_POSITION_MONO;
464
465 if (buf->mNumberChannels == 2) {
466 ca_sink->map.map[0] = PA_CHANNEL_POSITION_LEFT;
467 ca_sink->map.map[1] = PA_CHANNEL_POSITION_RIGHT;
468 }
469
470 ca_sink->ss.rate = u->stream_description.mSampleRate;
471 ca_sink->ss.format = PA_SAMPLE_FLOAT32LE;
472
473 pa_sink_new_data_init(&new_data);
474 new_data.card = u->card;
475 new_data.driver = __FILE__;
476 new_data.module = u->module;
477 new_data.namereg_fail = false;
478 pa_sink_new_data_set_name(&new_data, ca_sink->name);
479 pa_sink_new_data_set_channel_map(&new_data, &ca_sink->map);
480 pa_sink_new_data_set_sample_spec(&new_data, &ca_sink->ss);
481 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_STRING, u->device_name);
482 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_PRODUCT_NAME, u->device_name);
483 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, u->device_name);
484 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, "mmap");
485 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_CLASS, "sound");
486 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_API, "CoreAudio");
487 pa_proplist_setf(new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) buf->mDataByteSize);
488
489 if (u->vendor_name)
490 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_VENDOR_NAME, u->vendor_name);
491
492 sink = pa_sink_new(m->core, &new_data, flags);
493 pa_sink_new_data_done(&new_data);
494
495 if (!sink) {
496 pa_log("unable to create sink.");
497 return -1;
498 }
499
500 sink->parent.process_msg = sink_process_msg;
501 sink->userdata = ca_sink;
502 sink->set_state_in_main_thread = ca_sink_set_state_in_main_thread;
503
504 pa_sink_set_asyncmsgq(sink, u->thread_mq.inq);
505 pa_sink_set_rtpoll(sink, u->rtpoll);
506
507 ca_sink->pa_sink = sink;
508 ca_sink->userdata = u;
509
510 PA_LLIST_PREPEND(coreaudio_sink, u->sinks, ca_sink);
511
512 return 0;
513 }
514
ca_source_set_state_in_main_thread(pa_source * s,pa_source_state_t state,pa_suspend_cause_t suspend_cause)515 static int ca_source_set_state_in_main_thread(pa_source *s, pa_source_state_t state, pa_suspend_cause_t suspend_cause) {
516 coreaudio_source *source = s->userdata;
517
518 switch (state) {
519 case PA_SOURCE_SUSPENDED:
520 case PA_SOURCE_IDLE:
521 source->active = false;
522 break;
523
524 case PA_SOURCE_RUNNING:
525 source->active = true;
526 break;
527
528 case PA_SOURCE_UNLINKED:
529 case PA_SOURCE_INIT:
530 case PA_SOURCE_INVALID_STATE:
531 ;
532 }
533
534 ca_device_check_device_state(source->userdata);
535
536 return 0;
537 }
538
ca_device_create_source(pa_module * m,AudioBuffer * buf,int channel_idx)539 static int ca_device_create_source(pa_module *m, AudioBuffer *buf, int channel_idx) {
540 OSStatus err;
541 UInt32 size;
542 struct userdata *u = m->userdata;
543 pa_source_new_data new_data;
544 pa_source_flags_t flags = PA_SOURCE_LATENCY | PA_SOURCE_HARDWARE;
545 coreaudio_source *ca_source;
546 pa_source *source;
547 unsigned int i;
548 char *tmp = NULL;
549 pa_strbuf *strbuf;
550 AudioObjectPropertyAddress property_address;
551 CFStringRef tmp_cfstr = NULL;
552
553 if (buf->mNumberChannels > PA_CHANNELS_MAX) {
554 pa_log("Skipping device with more channels than we support (%u)", (unsigned int) buf->mNumberChannels);
555 return -1;
556 }
557
558 ca_source = pa_xnew0(coreaudio_source, 1);
559 ca_source->map.channels = buf->mNumberChannels;
560 ca_source->ss.channels = buf->mNumberChannels;
561 ca_source->channel_idx = channel_idx;
562
563 /* build a name for this stream */
564 strbuf = pa_strbuf_new();
565
566 for (i = 0; i < buf->mNumberChannels; i++) {
567 property_address.mSelector = kAudioObjectPropertyElementName;
568 property_address.mScope = kAudioDevicePropertyScopeInput;
569 property_address.mElement = channel_idx + i + 1;
570 size = sizeof(tmp_cfstr);
571 err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, &tmp_cfstr);
572 if (err == 0) {
573 tmp = CFString_to_cstr(tmp_cfstr);
574
575 if (tmp_cfstr)
576 CFRelease(tmp_cfstr);
577 }
578
579 if (i > 0)
580 pa_strbuf_puts(strbuf, ", ");
581
582 if (err || !tmp || !strlen(tmp))
583 pa_strbuf_printf(strbuf, "Channel %d", (int) property_address.mElement);
584 else
585 pa_strbuf_puts(strbuf, tmp);
586
587 pa_xfree(tmp);
588 tmp = NULL;
589 }
590
591 ca_source->name = pa_strbuf_to_string_free(strbuf);
592
593 pa_log_debug("Stream name is >%s<", ca_source->name);
594
595 /* default to mono streams */
596 for (i = 0; i < ca_source->map.channels; i++)
597 ca_source->map.map[i] = PA_CHANNEL_POSITION_MONO;
598
599 if (buf->mNumberChannels == 2) {
600 ca_source->map.map[0] = PA_CHANNEL_POSITION_LEFT;
601 ca_source->map.map[1] = PA_CHANNEL_POSITION_RIGHT;
602 }
603
604 ca_source->ss.rate = u->stream_description.mSampleRate;
605 ca_source->ss.format = PA_SAMPLE_FLOAT32LE;
606
607 pa_source_new_data_init(&new_data);
608 new_data.card = u->card;
609 new_data.driver = __FILE__;
610 new_data.module = u->module;
611 new_data.namereg_fail = false;
612 pa_source_new_data_set_name(&new_data, ca_source->name);
613 pa_source_new_data_set_channel_map(&new_data, &ca_source->map);
614 pa_source_new_data_set_sample_spec(&new_data, &ca_source->ss);
615 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_STRING, u->device_name);
616 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_PRODUCT_NAME, u->device_name);
617 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_DESCRIPTION, u->device_name);
618 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_ACCESS_MODE, "mmap");
619 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_CLASS, "sound");
620 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_API, "CoreAudio");
621 pa_proplist_setf(new_data.proplist, PA_PROP_DEVICE_BUFFERING_BUFFER_SIZE, "%lu", (unsigned long) buf->mDataByteSize);
622
623 if (u->vendor_name)
624 pa_proplist_sets(new_data.proplist, PA_PROP_DEVICE_VENDOR_NAME, u->vendor_name);
625
626 source = pa_source_new(m->core, &new_data, flags);
627 pa_source_new_data_done(&new_data);
628
629 if (!source) {
630 pa_log("unable to create source.");
631 return -1;
632 }
633
634 source->parent.process_msg = source_process_msg;
635 source->userdata = ca_source;
636 source->set_state_in_main_thread = ca_source_set_state_in_main_thread;
637
638 pa_source_set_asyncmsgq(source, u->thread_mq.inq);
639 pa_source_set_rtpoll(source, u->rtpoll);
640
641 ca_source->pa_source = source;
642 ca_source->userdata = u;
643
644 PA_LLIST_PREPEND(coreaudio_source, u->sources, ca_source);
645
646 return 0;
647 }
648
ca_device_create_streams(pa_module * m,bool direction_in)649 static int ca_device_create_streams(pa_module *m, bool direction_in) {
650 OSStatus err;
651 UInt32 size, i, channel_idx;
652 struct userdata *u = m->userdata;
653 AudioBufferList *buffer_list;
654 AudioObjectPropertyAddress property_address;
655
656 property_address.mScope = direction_in ? kAudioDevicePropertyScopeInput : kAudioDevicePropertyScopeOutput;
657 property_address.mElement = kAudioObjectPropertyElementMaster;
658
659 /* get current stream format */
660 size = sizeof(AudioStreamBasicDescription);
661 property_address.mSelector = kAudioDevicePropertyStreamFormat;
662 err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, &u->stream_description);
663 if (err) {
664 /* no appropriate streams found - silently bail. */
665 return -1;
666 }
667
668 if (u->stream_description.mFormatID != kAudioFormatLinearPCM) {
669 pa_log("Unsupported audio format '%c%c%c%c'",
670 (char) (u->stream_description.mFormatID >> 24),
671 (char) (u->stream_description.mFormatID >> 16) & 0xff,
672 (char) (u->stream_description.mFormatID >> 8) & 0xff,
673 (char) (u->stream_description.mFormatID & 0xff));
674 return -1;
675 }
676
677 /* get stream configuration */
678 size = 0;
679 property_address.mSelector = kAudioDevicePropertyStreamConfiguration;
680 err = AudioObjectGetPropertyDataSize(u->object_id, &property_address, 0, NULL, &size);
681 if (err) {
682 pa_log("Failed to get kAudioDevicePropertyStreamConfiguration (%s).", direction_in ? "input" : "output");
683 return -1;
684 }
685
686 if (!size)
687 return 0;
688
689 buffer_list = (AudioBufferList *) pa_xmalloc(size);
690 err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, buffer_list);
691
692 if (!err) {
693 pa_log_debug("Sample rate: %f", u->stream_description.mSampleRate);
694 pa_log_debug("%d bytes per packet", (unsigned int) u->stream_description.mBytesPerPacket);
695 pa_log_debug("%d frames per packet", (unsigned int) u->stream_description.mFramesPerPacket);
696 pa_log_debug("%d bytes per frame", (unsigned int) u->stream_description.mBytesPerFrame);
697 pa_log_debug("%d channels per frame", (unsigned int) u->stream_description.mChannelsPerFrame);
698 pa_log_debug("%d bits per channel", (unsigned int) u->stream_description.mBitsPerChannel);
699
700 for (channel_idx = 0, i = 0; i < buffer_list->mNumberBuffers; i++) {
701 AudioBuffer *buf = buffer_list->mBuffers + i;
702
703 if (direction_in)
704 ca_device_create_source(m, buf, channel_idx);
705 else
706 ca_device_create_sink(m, buf, channel_idx);
707
708 channel_idx += buf->mNumberChannels;
709 }
710 }
711
712 pa_xfree(buffer_list);
713 return 0;
714 }
715
thread_func(void * userdata)716 static void thread_func(void *userdata) {
717 struct userdata *u = userdata;
718
719 pa_assert(u);
720 pa_assert(u->module);
721 pa_assert(u->module->core);
722
723 pa_log_debug("Thread starting up");
724
725 if (u->module->core->realtime_scheduling)
726 pa_thread_make_realtime(u->module->core->realtime_priority);
727
728 pa_thread_mq_install(&u->thread_mq);
729
730 for (;;) {
731 coreaudio_sink *ca_sink;
732 int ret;
733
734 PA_LLIST_FOREACH(ca_sink, u->sinks) {
735 if (PA_UNLIKELY(ca_sink->pa_sink->thread_info.rewind_requested))
736 pa_sink_process_rewind(ca_sink->pa_sink, 0);
737 }
738
739 ret = pa_rtpoll_run(u->rtpoll);
740
741 if (ret < 0)
742 goto fail;
743
744 if (ret == 0)
745 goto finish;
746 }
747
748 fail:
749 /* If this was no regular exit from the loop we have to continue
750 * processing messages until we received PA_MESSAGE_SHUTDOWN */
751 pa_asyncmsgq_post(u->thread_mq.outq, PA_MSGOBJECT(u->module->core), PA_CORE_MESSAGE_UNLOAD_MODULE, u->module, 0, NULL, NULL);
752 pa_asyncmsgq_wait_for(u->thread_mq.inq, PA_MESSAGE_SHUTDOWN);
753
754 finish:
755 pa_log_debug("Thread shutting down");
756 }
757
pa__init(pa_module * m)758 int pa__init(pa_module *m) {
759 OSStatus err;
760 UInt32 size, frames;
761 struct userdata *u = NULL;
762 pa_modargs *ma = NULL;
763 bool record = true, playback = true;
764 char tmp[64];
765 pa_card_new_data card_new_data;
766 pa_card_profile *p;
767 coreaudio_sink *ca_sink;
768 coreaudio_source *ca_source;
769 AudioObjectPropertyAddress property_address;
770
771 pa_assert(m);
772
773 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
774 pa_log("Failed to parse module arguments.");
775 goto fail;
776 }
777
778 if (pa_modargs_get_value_boolean(ma, "record", &record) < 0 || pa_modargs_get_value_boolean(ma, "playback", &playback) < 0) {
779 pa_log("record= and playback= expect boolean argument.");
780 goto fail;
781 }
782
783 if (!playback && !record) {
784 pa_log("neither playback nor record enabled for device.");
785 goto fail;
786 }
787
788 u = pa_xnew0(struct userdata, 1);
789 u->module = m;
790 m->userdata = u;
791
792 if (pa_modargs_get_value_u32(ma, "object_id", (unsigned int *) &u->object_id) != 0) {
793 pa_log("Failed to parse object_id argument.");
794 goto fail;
795 }
796
797 property_address.mScope = kAudioObjectPropertyScopeGlobal;
798 property_address.mElement = kAudioObjectPropertyElementMaster;
799
800 /* get device product name */
801 property_address.mSelector = kAudioDevicePropertyDeviceName;
802 size = sizeof(tmp);
803 err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, tmp);
804 if (err) {
805 pa_log("Failed to get kAudioDevicePropertyDeviceName (err = %08x).", (int) err);
806 goto fail;
807 }
808
809 u->device_name = pa_xstrdup(tmp);
810
811 pa_card_new_data_init(&card_new_data);
812 pa_proplist_sets(card_new_data.proplist, PA_PROP_DEVICE_STRING, tmp);
813 card_new_data.driver = __FILE__;
814 pa_card_new_data_set_name(&card_new_data, tmp);
815 pa_log_info("Initializing module for CoreAudio device '%s' (id %d)", tmp, (unsigned int) u->object_id);
816
817 /* get device vendor name (may fail) */
818 property_address.mSelector = kAudioDevicePropertyDeviceManufacturer;
819 size = sizeof(tmp);
820 err = AudioObjectGetPropertyData(u->object_id, &property_address, 0, NULL, &size, tmp);
821 if (!err)
822 u->vendor_name = pa_xstrdup(tmp);
823
824 /* add on profile */
825 p = pa_card_profile_new("on", _("On"), 0);
826 pa_hashmap_put(card_new_data.profiles, p->name, p);
827
828 /* create the card object */
829 u->card = pa_card_new(m->core, &card_new_data);
830 if (!u->card) {
831 pa_log("Unable to create card.\n");
832 goto fail;
833 }
834
835 pa_card_new_data_done(&card_new_data);
836 u->card->userdata = u;
837 u->card->set_profile = card_set_profile;
838 pa_card_choose_initial_profile(u->card);
839 pa_card_put(u->card);
840
841 u->rtpoll = pa_rtpoll_new();
842
843 if (pa_thread_mq_init(&u->thread_mq, m->core->mainloop, u->rtpoll) < 0) {
844 pa_log("pa_thread_mq_init() failed.");
845 goto fail;
846 }
847
848 u->async_msgq = pa_asyncmsgq_new(0);
849 if (!u->async_msgq) {
850 pa_log("pa_asyncmsgq_new() failed.");
851 goto fail;
852 }
853
854 pa_rtpoll_item_new_asyncmsgq_read(u->rtpoll, PA_RTPOLL_EARLY-1, u->async_msgq);
855
856 PA_LLIST_HEAD_INIT(coreaudio_sink, u->sinks);
857
858 /* create sinks */
859 if (playback)
860 ca_device_create_streams(m, false);
861
862 /* create sources */
863 if (record)
864 ca_device_create_streams(m, true);
865
866 /* create the message thread */
867 if (!(u->thread = pa_thread_new(u->device_name, thread_func, u))) {
868 pa_log("Failed to create thread.");
869 goto fail;
870 }
871
872 /* register notification callback for stream format changes */
873 property_address.mSelector = kAudioDevicePropertyStreamFormat;
874 property_address.mScope = kAudioObjectPropertyScopeGlobal;
875 property_address.mElement = kAudioObjectPropertyElementMaster;
876
877 AudioObjectAddPropertyListener(u->object_id, &property_address, ca_stream_format_changed, u);
878
879 /* set number of frames in IOProc */
880 frames = DEFAULT_FRAMES_PER_IOPROC;
881 pa_modargs_get_value_u32(ma, "ioproc_frames", (unsigned int *) &frames);
882
883 property_address.mSelector = kAudioDevicePropertyBufferFrameSize;
884 AudioObjectSetPropertyData(u->object_id, &property_address, 0, NULL, sizeof(frames), &frames);
885 pa_log_debug("%u frames per IOProc\n", (unsigned int) frames);
886
887 /* create one ioproc for both directions */
888 err = AudioDeviceCreateIOProcID(u->object_id, io_render_proc, u, &u->proc_id);
889 if (err) {
890 pa_log("AudioDeviceCreateIOProcID() failed (err = %08x\n).", (int) err);
891 goto fail;
892 }
893
894 for (ca_sink = u->sinks; ca_sink; ca_sink = ca_sink->next)
895 pa_sink_put(ca_sink->pa_sink);
896
897 for (ca_source = u->sources; ca_source; ca_source = ca_source->next)
898 pa_source_put(ca_source->pa_source);
899
900 pa_modargs_free(ma);
901
902 return 0;
903
904 fail:
905 if (u)
906 pa__done(m);
907
908 if (ma)
909 pa_modargs_free(ma);
910
911 return -1;
912 }
913
pa__done(pa_module * m)914 void pa__done(pa_module *m) {
915 struct userdata *u;
916 coreaudio_sink *ca_sink;
917 coreaudio_source *ca_source;
918 AudioObjectPropertyAddress property_address;
919
920 pa_assert(m);
921
922 u = m->userdata;
923 pa_assert(u);
924
925 /* unlink sinks */
926 for (ca_sink = u->sinks; ca_sink; ca_sink = ca_sink->next)
927 if (ca_sink->pa_sink)
928 pa_sink_unlink(ca_sink->pa_sink);
929
930 /* unlink sources */
931 for (ca_source = u->sources; ca_source; ca_source = ca_source->next)
932 if (ca_source->pa_source)
933 pa_source_unlink(ca_source->pa_source);
934
935 if (u->thread) {
936 pa_asyncmsgq_send(u->thread_mq.inq, NULL, PA_MESSAGE_SHUTDOWN, NULL, 0, NULL);
937 pa_thread_free(u->thread);
938 pa_thread_mq_done(&u->thread_mq);
939 }
940
941 if (u->async_msgq)
942 pa_asyncmsgq_unref(u->async_msgq);
943
944 /* free sinks */
945 for (ca_sink = u->sinks; ca_sink;) {
946 coreaudio_sink *next = ca_sink->next;
947
948 if (ca_sink->pa_sink)
949 pa_sink_unref(ca_sink->pa_sink);
950
951 pa_xfree(ca_sink->name);
952 pa_xfree(ca_sink);
953 ca_sink = next;
954 }
955
956 /* free sources */
957 for (ca_source = u->sources; ca_source;) {
958 coreaudio_source *next = ca_source->next;
959
960 if (ca_source->pa_source)
961 pa_source_unref(ca_source->pa_source);
962
963 pa_xfree(ca_source->name);
964 pa_xfree(ca_source);
965 ca_source = next;
966 }
967
968 if (u->proc_id) {
969 AudioDeviceStop(u->object_id, u->proc_id);
970 AudioDeviceDestroyIOProcID(u->object_id, u->proc_id);
971 }
972
973 property_address.mSelector = kAudioDevicePropertyStreamFormat;
974 property_address.mScope = kAudioObjectPropertyScopeGlobal;
975 property_address.mElement = kAudioObjectPropertyElementMaster;
976
977 AudioObjectRemovePropertyListener(kAudioObjectSystemObject, &property_address, ca_stream_format_changed, u);
978
979 pa_xfree(u->device_name);
980 pa_xfree(u->vendor_name);
981 pa_rtpoll_free(u->rtpoll);
982 pa_card_free(u->card);
983
984 pa_xfree(u);
985 }
986