1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
|
/*
* Copyright (C) 2006-2007 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "AudioSystem"
//#define LOG_NDEBUG 0
#include <utils/Log.h>
#include <binder/IServiceManager.h>
#include <media/AudioSystem.h>
#include <media/IAudioFlinger.h>
#include <media/IAudioPolicyService.h>
#include <math.h>
#include <system/audio.h>
// ----------------------------------------------------------------------------
namespace android {
// client singleton for AudioFlinger binder interface
Mutex AudioSystem::gLock;
sp<IAudioFlinger> AudioSystem::gAudioFlinger;
sp<AudioSystem::AudioFlingerClient> AudioSystem::gAudioFlingerClient;
audio_error_callback AudioSystem::gAudioErrorCallback = NULL;
// Cached values
DefaultKeyedVector<audio_io_handle_t, AudioSystem::OutputDescriptor *> AudioSystem::gOutputs(0);
// Cached values for recording queries, all protected by gLock
uint32_t AudioSystem::gPrevInSamplingRate = 16000;
audio_format_t AudioSystem::gPrevInFormat = AUDIO_FORMAT_PCM_16_BIT;
audio_channel_mask_t AudioSystem::gPrevInChannelMask = AUDIO_CHANNEL_IN_MONO;
size_t AudioSystem::gInBuffSize = 0;
// establish binder interface to AudioFlinger service
const sp<IAudioFlinger>& AudioSystem::get_audio_flinger()
{
Mutex::Autolock _l(gLock);
if (gAudioFlinger == 0) {
sp<IServiceManager> sm = defaultServiceManager();
sp<IBinder> binder;
do {
binder = sm->getService(String16("media.audio_flinger"));
if (binder != 0)
break;
ALOGW("AudioFlinger not published, waiting...");
usleep(500000); // 0.5 s
} while (true);
if (gAudioFlingerClient == NULL) {
gAudioFlingerClient = new AudioFlingerClient();
} else {
if (gAudioErrorCallback) {
gAudioErrorCallback(NO_ERROR);
}
}
binder->linkToDeath(gAudioFlingerClient);
gAudioFlinger = interface_cast<IAudioFlinger>(binder);
gAudioFlinger->registerClient(gAudioFlingerClient);
}
ALOGE_IF(gAudioFlinger==0, "no AudioFlinger!?");
return gAudioFlinger;
}
status_t AudioSystem::muteMicrophone(bool state) {
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
return af->setMicMute(state);
}
status_t AudioSystem::isMicrophoneMuted(bool* state) {
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
*state = af->getMicMute();
return NO_ERROR;
}
status_t AudioSystem::setMasterVolume(float value)
{
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
af->setMasterVolume(value);
return NO_ERROR;
}
status_t AudioSystem::setMasterMute(bool mute)
{
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
af->setMasterMute(mute);
return NO_ERROR;
}
status_t AudioSystem::getMasterVolume(float* volume)
{
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
*volume = af->masterVolume();
return NO_ERROR;
}
status_t AudioSystem::getMasterMute(bool* mute)
{
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
*mute = af->masterMute();
return NO_ERROR;
}
status_t AudioSystem::setStreamVolume(audio_stream_type_t stream, float value,
audio_io_handle_t output)
{
if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE;
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
af->setStreamVolume(stream, value, output);
return NO_ERROR;
}
status_t AudioSystem::setStreamMute(audio_stream_type_t stream, bool mute)
{
if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE;
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
af->setStreamMute(stream, mute);
return NO_ERROR;
}
status_t AudioSystem::getStreamVolume(audio_stream_type_t stream, float* volume,
audio_io_handle_t output)
{
if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE;
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
*volume = af->streamVolume(stream, output);
return NO_ERROR;
}
status_t AudioSystem::getStreamMute(audio_stream_type_t stream, bool* mute)
{
if (uint32_t(stream) >= AUDIO_STREAM_CNT) return BAD_VALUE;
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
*mute = af->streamMute(stream);
return NO_ERROR;
}
status_t AudioSystem::setMode(audio_mode_t mode)
{
if (uint32_t(mode) >= AUDIO_MODE_CNT) return BAD_VALUE;
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
return af->setMode(mode);
}
status_t AudioSystem::setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs) {
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
return af->setParameters(ioHandle, keyValuePairs);
}
String8 AudioSystem::getParameters(audio_io_handle_t ioHandle, const String8& keys) {
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
String8 result = String8("");
if (af == 0) return result;
result = af->getParameters(ioHandle, keys);
return result;
}
// convert volume steps to natural log scale
// change this value to change volume scaling
static const float dBPerStep = 0.5f;
// shouldn't need to touch these
static const float dBConvert = -dBPerStep * 2.302585093f / 20.0f;
static const float dBConvertInverse = 1.0f / dBConvert;
float AudioSystem::linearToLog(int volume)
{
// float v = volume ? exp(float(100 - volume) * dBConvert) : 0;
// ALOGD("linearToLog(%d)=%f", volume, v);
// return v;
return volume ? exp(float(100 - volume) * dBConvert) : 0;
}
int AudioSystem::logToLinear(float volume)
{
// int v = volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0;
// ALOGD("logTolinear(%d)=%f", v, volume);
// return v;
return volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0;
}
status_t AudioSystem::getOutputSamplingRate(uint32_t* samplingRate, audio_stream_type_t streamType)
{
audio_io_handle_t output;
if (streamType == AUDIO_STREAM_DEFAULT) {
streamType = AUDIO_STREAM_MUSIC;
}
output = getOutput(streamType);
if (output == 0) {
return PERMISSION_DENIED;
}
return getSamplingRate(output, streamType, samplingRate);
}
status_t AudioSystem::getSamplingRate(audio_io_handle_t output,
audio_stream_type_t streamType,
uint32_t* samplingRate)
{
OutputDescriptor *outputDesc;
gLock.lock();
outputDesc = AudioSystem::gOutputs.valueFor(output);
if (outputDesc == NULL) {
ALOGV("getOutputSamplingRate() no output descriptor for output %d in gOutputs", output);
gLock.unlock();
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
*samplingRate = af->sampleRate(output);
} else {
ALOGV("getOutputSamplingRate() reading from output desc");
*samplingRate = outputDesc->samplingRate;
gLock.unlock();
}
ALOGV("getSamplingRate() streamType %d, output %d, sampling rate %u", streamType, output,
*samplingRate);
return NO_ERROR;
}
status_t AudioSystem::getOutputFrameCount(size_t* frameCount, audio_stream_type_t streamType)
{
audio_io_handle_t output;
if (streamType == AUDIO_STREAM_DEFAULT) {
streamType = AUDIO_STREAM_MUSIC;
}
output = getOutput(streamType);
if (output == 0) {
return PERMISSION_DENIED;
}
return getFrameCount(output, streamType, frameCount);
}
status_t AudioSystem::getFrameCount(audio_io_handle_t output,
audio_stream_type_t streamType,
size_t* frameCount)
{
OutputDescriptor *outputDesc;
gLock.lock();
outputDesc = AudioSystem::gOutputs.valueFor(output);
if (outputDesc == NULL) {
gLock.unlock();
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
*frameCount = af->frameCount(output);
} else {
*frameCount = outputDesc->frameCount;
gLock.unlock();
}
ALOGV("getFrameCount() streamType %d, output %d, frameCount %d", streamType, output,
*frameCount);
return NO_ERROR;
}
status_t AudioSystem::getOutputLatency(uint32_t* latency, audio_stream_type_t streamType)
{
audio_io_handle_t output;
if (streamType == AUDIO_STREAM_DEFAULT) {
streamType = AUDIO_STREAM_MUSIC;
}
output = getOutput(streamType);
if (output == 0) {
return PERMISSION_DENIED;
}
return getLatency(output, streamType, latency);
}
status_t AudioSystem::getLatency(audio_io_handle_t output,
audio_stream_type_t streamType,
uint32_t* latency)
{
OutputDescriptor *outputDesc;
gLock.lock();
outputDesc = AudioSystem::gOutputs.valueFor(output);
if (outputDesc == NULL) {
gLock.unlock();
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
*latency = af->latency(output);
} else {
*latency = outputDesc->latency;
gLock.unlock();
}
ALOGV("getLatency() streamType %d, output %d, latency %d", streamType, output, *latency);
return NO_ERROR;
}
status_t AudioSystem::getInputBufferSize(uint32_t sampleRate, audio_format_t format,
audio_channel_mask_t channelMask, size_t* buffSize)
{
gLock.lock();
// Do we have a stale gInBufferSize or are we requesting the input buffer size for new values
size_t inBuffSize = gInBuffSize;
if ((inBuffSize == 0) || (sampleRate != gPrevInSamplingRate) || (format != gPrevInFormat)
|| (channelMask != gPrevInChannelMask)) {
gLock.unlock();
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) {
return PERMISSION_DENIED;
}
inBuffSize = af->getInputBufferSize(sampleRate, format, channelMask);
gLock.lock();
// save the request params
gPrevInSamplingRate = sampleRate;
gPrevInFormat = format;
gPrevInChannelMask = channelMask;
gInBuffSize = inBuffSize;
}
gLock.unlock();
*buffSize = inBuffSize;
return NO_ERROR;
}
status_t AudioSystem::setVoiceVolume(float value)
{
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
return af->setVoiceVolume(value);
}
status_t AudioSystem::getRenderPosition(audio_io_handle_t output, size_t *halFrames,
size_t *dspFrames, audio_stream_type_t stream)
{
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
if (stream == AUDIO_STREAM_DEFAULT) {
stream = AUDIO_STREAM_MUSIC;
}
if (output == 0) {
output = getOutput(stream);
}
return af->getRenderPosition(halFrames, dspFrames, output);
}
size_t AudioSystem::getInputFramesLost(audio_io_handle_t ioHandle) {
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
unsigned int result = 0;
if (af == 0) return result;
if (ioHandle == 0) return result;
result = af->getInputFramesLost(ioHandle);
return result;
}
int AudioSystem::newAudioSessionId() {
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return 0;
return af->newAudioSessionId();
}
void AudioSystem::acquireAudioSessionId(int audioSession) {
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af != 0) {
af->acquireAudioSessionId(audioSession);
}
}
void AudioSystem::releaseAudioSessionId(int audioSession) {
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af != 0) {
af->releaseAudioSessionId(audioSession);
}
}
// ---------------------------------------------------------------------------
void AudioSystem::AudioFlingerClient::binderDied(const wp<IBinder>& who) {
Mutex::Autolock _l(AudioSystem::gLock);
AudioSystem::gAudioFlinger.clear();
// clear output handles and stream to output map caches
AudioSystem::gOutputs.clear();
if (gAudioErrorCallback) {
gAudioErrorCallback(DEAD_OBJECT);
}
ALOGW("AudioFlinger server died!");
}
void AudioSystem::AudioFlingerClient::ioConfigChanged(int event, audio_io_handle_t ioHandle,
const void *param2) {
ALOGV("ioConfigChanged() event %d", event);
const OutputDescriptor *desc;
audio_stream_type_t stream;
if (ioHandle == 0) return;
Mutex::Autolock _l(AudioSystem::gLock);
switch (event) {
case STREAM_CONFIG_CHANGED:
break;
case OUTPUT_OPENED: {
if (gOutputs.indexOfKey(ioHandle) >= 0) {
ALOGV("ioConfigChanged() opening already existing output! %d", ioHandle);
break;
}
if (param2 == NULL) break;
desc = (const OutputDescriptor *)param2;
OutputDescriptor *outputDesc = new OutputDescriptor(*desc);
gOutputs.add(ioHandle, outputDesc);
ALOGV("ioConfigChanged() new output samplingRate %u, format %d channels %#x frameCount %u "
"latency %d",
outputDesc->samplingRate, outputDesc->format, outputDesc->channels,
outputDesc->frameCount, outputDesc->latency);
} break;
case OUTPUT_CLOSED: {
if (gOutputs.indexOfKey(ioHandle) < 0) {
ALOGW("ioConfigChanged() closing unknow output! %d", ioHandle);
break;
}
ALOGV("ioConfigChanged() output %d closed", ioHandle);
gOutputs.removeItem(ioHandle);
} break;
case OUTPUT_CONFIG_CHANGED: {
int index = gOutputs.indexOfKey(ioHandle);
if (index < 0) {
ALOGW("ioConfigChanged() modifying unknow output! %d", ioHandle);
break;
}
if (param2 == NULL) break;
desc = (const OutputDescriptor *)param2;
ALOGV("ioConfigChanged() new config for output %d samplingRate %u, format %d channels %#x "
"frameCount %d latency %d",
ioHandle, desc->samplingRate, desc->format,
desc->channels, desc->frameCount, desc->latency);
OutputDescriptor *outputDesc = gOutputs.valueAt(index);
delete outputDesc;
outputDesc = new OutputDescriptor(*desc);
gOutputs.replaceValueFor(ioHandle, outputDesc);
} break;
case INPUT_OPENED:
case INPUT_CLOSED:
case INPUT_CONFIG_CHANGED:
break;
}
}
void AudioSystem::setErrorCallback(audio_error_callback cb) {
Mutex::Autolock _l(gLock);
gAudioErrorCallback = cb;
}
bool AudioSystem::routedToA2dpOutput(audio_stream_type_t streamType) {
switch (streamType) {
case AUDIO_STREAM_MUSIC:
case AUDIO_STREAM_VOICE_CALL:
case AUDIO_STREAM_BLUETOOTH_SCO:
case AUDIO_STREAM_SYSTEM:
return true;
default:
return false;
}
}
// client singleton for AudioPolicyService binder interface
sp<IAudioPolicyService> AudioSystem::gAudioPolicyService;
sp<AudioSystem::AudioPolicyServiceClient> AudioSystem::gAudioPolicyServiceClient;
// establish binder interface to AudioPolicy service
const sp<IAudioPolicyService>& AudioSystem::get_audio_policy_service()
{
gLock.lock();
if (gAudioPolicyService == 0) {
sp<IServiceManager> sm = defaultServiceManager();
sp<IBinder> binder;
do {
binder = sm->getService(String16("media.audio_policy"));
if (binder != 0)
break;
ALOGW("AudioPolicyService not published, waiting...");
usleep(500000); // 0.5 s
} while (true);
if (gAudioPolicyServiceClient == NULL) {
gAudioPolicyServiceClient = new AudioPolicyServiceClient();
}
binder->linkToDeath(gAudioPolicyServiceClient);
gAudioPolicyService = interface_cast<IAudioPolicyService>(binder);
gLock.unlock();
} else {
gLock.unlock();
}
return gAudioPolicyService;
}
// ---------------------------------------------------------------------------
status_t AudioSystem::setDeviceConnectionState(audio_devices_t device,
audio_policy_dev_state_t state,
const char *device_address)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
const char *address = "";
if (aps == 0) return PERMISSION_DENIED;
if (device_address != NULL) {
address = device_address;
}
return aps->setDeviceConnectionState(device, state, address);
}
audio_policy_dev_state_t AudioSystem::getDeviceConnectionState(audio_devices_t device,
const char *device_address)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE;
return aps->getDeviceConnectionState(device, device_address);
}
status_t AudioSystem::setPhoneState(audio_mode_t state)
{
if (uint32_t(state) >= AUDIO_MODE_CNT) return BAD_VALUE;
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
return aps->setPhoneState(state);
}
status_t AudioSystem::setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
return aps->setForceUse(usage, config);
}
audio_policy_forced_cfg_t AudioSystem::getForceUse(audio_policy_force_use_t usage)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return AUDIO_POLICY_FORCE_NONE;
return aps->getForceUse(usage);
}
audio_io_handle_t AudioSystem::getOutput(audio_stream_type_t stream,
uint32_t samplingRate,
audio_format_t format,
audio_channel_mask_t channelMask,
audio_output_flags_t flags,
const audio_offload_info_t *offloadInfo)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return 0;
return aps->getOutput(stream, samplingRate, format, channelMask, flags, offloadInfo);
}
status_t AudioSystem::startOutput(audio_io_handle_t output,
audio_stream_type_t stream,
int session)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
return aps->startOutput(output, stream, session);
}
status_t AudioSystem::stopOutput(audio_io_handle_t output,
audio_stream_type_t stream,
int session)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
return aps->stopOutput(output, stream, session);
}
void AudioSystem::releaseOutput(audio_io_handle_t output)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return;
aps->releaseOutput(output);
}
audio_io_handle_t AudioSystem::getInput(audio_source_t inputSource,
uint32_t samplingRate,
audio_format_t format,
audio_channel_mask_t channelMask,
int sessionId)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return 0;
return aps->getInput(inputSource, samplingRate, format, channelMask, sessionId);
}
status_t AudioSystem::startInput(audio_io_handle_t input)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
return aps->startInput(input);
}
status_t AudioSystem::stopInput(audio_io_handle_t input)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
return aps->stopInput(input);
}
void AudioSystem::releaseInput(audio_io_handle_t input)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return;
aps->releaseInput(input);
}
status_t AudioSystem::initStreamVolume(audio_stream_type_t stream,
int indexMin,
int indexMax)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
return aps->initStreamVolume(stream, indexMin, indexMax);
}
status_t AudioSystem::setStreamVolumeIndex(audio_stream_type_t stream,
int index,
audio_devices_t device)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
return aps->setStreamVolumeIndex(stream, index, device);
}
status_t AudioSystem::getStreamVolumeIndex(audio_stream_type_t stream,
int *index,
audio_devices_t device)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
return aps->getStreamVolumeIndex(stream, index, device);
}
uint32_t AudioSystem::getStrategyForStream(audio_stream_type_t stream)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return 0;
return aps->getStrategyForStream(stream);
}
audio_devices_t AudioSystem::getDevicesForStream(audio_stream_type_t stream)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return (audio_devices_t)0;
return aps->getDevicesForStream(stream);
}
audio_io_handle_t AudioSystem::getOutputForEffect(const effect_descriptor_t *desc)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
return aps->getOutputForEffect(desc);
}
status_t AudioSystem::registerEffect(const effect_descriptor_t *desc,
audio_io_handle_t io,
uint32_t strategy,
int session,
int id)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
return aps->registerEffect(desc, io, strategy, session, id);
}
status_t AudioSystem::unregisterEffect(int id)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
return aps->unregisterEffect(id);
}
status_t AudioSystem::setEffectEnabled(int id, bool enabled)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
return aps->setEffectEnabled(id, enabled);
}
status_t AudioSystem::isStreamActive(audio_stream_type_t stream, bool* state, uint32_t inPastMs)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
if (state == NULL) return BAD_VALUE;
*state = aps->isStreamActive(stream, inPastMs);
return NO_ERROR;
}
status_t AudioSystem::isStreamActiveRemotely(audio_stream_type_t stream, bool* state,
uint32_t inPastMs)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
if (state == NULL) return BAD_VALUE;
*state = aps->isStreamActiveRemotely(stream, inPastMs);
return NO_ERROR;
}
status_t AudioSystem::isSourceActive(audio_source_t stream, bool* state)
{
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return PERMISSION_DENIED;
if (state == NULL) return BAD_VALUE;
*state = aps->isSourceActive(stream);
return NO_ERROR;
}
uint32_t AudioSystem::getPrimaryOutputSamplingRate()
{
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return 0;
return af->getPrimaryOutputSamplingRate();
}
size_t AudioSystem::getPrimaryOutputFrameCount()
{
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return 0;
return af->getPrimaryOutputFrameCount();
}
void AudioSystem::clearAudioConfigCache()
{
Mutex::Autolock _l(gLock);
ALOGV("clearAudioConfigCache()");
gOutputs.clear();
}
bool AudioSystem::isOffloadSupported(const audio_offload_info_t& info)
{
ALOGV("isOffloadSupported()");
const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
if (aps == 0) return false;
return aps->isOffloadSupported(info);
}
// ---------------------------------------------------------------------------
void AudioSystem::AudioPolicyServiceClient::binderDied(const wp<IBinder>& who) {
Mutex::Autolock _l(AudioSystem::gLock);
AudioSystem::gAudioPolicyService.clear();
ALOGW("AudioPolicyService server died!");
}
}; // namespace android
|