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
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
|
/*
* Copyright (C) 2009 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 "AudioPolicyService"
//#define LOG_NDEBUG 0
#undef __STRICT_ANSI__
#define __STDINT_LIMITS
#define __STDC_LIMIT_MACROS
#include <stdint.h>
#include <sys/time.h>
#include <binder/IServiceManager.h>
#include <utils/Log.h>
#include <cutils/properties.h>
#include <binder/IPCThreadState.h>
#include <utils/String16.h>
#include <utils/threads.h>
#include "AudioPolicyService.h"
#include <cutils/properties.h>
#include <hardware_legacy/power.h>
#include <media/AudioEffect.h>
#include <media/EffectsFactoryApi.h>
#include <hardware/hardware.h>
#include <system/audio.h>
#include <system/audio_policy.h>
#include <hardware/audio_policy.h>
#include <audio_effects/audio_effects_conf.h>
namespace android {
static const char kDeadlockedString[] = "AudioPolicyService may be deadlocked\n";
static const char kCmdDeadlockedString[] = "AudioPolicyService command thread may be deadlocked\n";
static const int kDumpLockRetries = 50;
static const int kDumpLockSleepUs = 20000;
static bool checkPermission() {
if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
bool ok = checkCallingPermission(String16("android.permission.MODIFY_AUDIO_SETTINGS"));
if (!ok) ALOGE("Request requires android.permission.MODIFY_AUDIO_SETTINGS");
return ok;
}
namespace {
extern struct audio_policy_service_ops aps_ops;
};
// ----------------------------------------------------------------------------
AudioPolicyService::AudioPolicyService()
: BnAudioPolicyService() , mpAudioPolicyDev(NULL) , mpAudioPolicy(NULL)
{
char value[PROPERTY_VALUE_MAX];
const struct hw_module_t *module;
int forced_val;
int rc;
Mutex::Autolock _l(mLock);
// start tone playback thread
mTonePlaybackThread = new AudioCommandThread(String8(""));
// start audio commands thread
mAudioCommandThread = new AudioCommandThread(String8("ApmCommandThread"));
/* instantiate the audio policy manager */
rc = hw_get_module(AUDIO_POLICY_HARDWARE_MODULE_ID, &module);
if (rc)
return;
rc = audio_policy_dev_open(module, &mpAudioPolicyDev);
ALOGE_IF(rc, "couldn't open audio policy device (%s)", strerror(-rc));
if (rc)
return;
rc = mpAudioPolicyDev->create_audio_policy(mpAudioPolicyDev, &aps_ops, this,
&mpAudioPolicy);
ALOGE_IF(rc, "couldn't create audio policy (%s)", strerror(-rc));
if (rc)
return;
rc = mpAudioPolicy->init_check(mpAudioPolicy);
ALOGE_IF(rc, "couldn't init_check the audio policy (%s)", strerror(-rc));
if (rc)
return;
property_get("ro.camera.sound.forced", value, "0");
forced_val = strtol(value, NULL, 0);
mpAudioPolicy->set_can_mute_enforced_audible(mpAudioPolicy, !forced_val);
ALOGI("Loaded audio policy from %s (%s)", module->name, module->id);
// load audio pre processing modules
if (access(AUDIO_EFFECT_VENDOR_CONFIG_FILE, R_OK) == 0) {
loadPreProcessorConfig(AUDIO_EFFECT_VENDOR_CONFIG_FILE);
} else if (access(AUDIO_EFFECT_DEFAULT_CONFIG_FILE, R_OK) == 0) {
loadPreProcessorConfig(AUDIO_EFFECT_DEFAULT_CONFIG_FILE);
}
}
AudioPolicyService::~AudioPolicyService()
{
mTonePlaybackThread->exit();
mTonePlaybackThread.clear();
mAudioCommandThread->exit();
mAudioCommandThread.clear();
// release audio pre processing resources
for (size_t i = 0; i < mInputSources.size(); i++) {
InputSourceDesc *source = mInputSources.valueAt(i);
Vector <EffectDesc *> effects = source->mEffects;
for (size_t j = 0; j < effects.size(); j++) {
delete effects[j]->mName;
Vector <effect_param_t *> params = effects[j]->mParams;
for (size_t k = 0; k < params.size(); k++) {
delete params[k];
}
params.clear();
delete effects[j];
}
effects.clear();
delete source;
}
mInputSources.clear();
for (size_t i = 0; i < mInputs.size(); i++) {
mInputs.valueAt(i)->mEffects.clear();
delete mInputs.valueAt(i);
}
mInputs.clear();
if (mpAudioPolicy && mpAudioPolicyDev)
mpAudioPolicyDev->destroy_audio_policy(mpAudioPolicyDev, mpAudioPolicy);
if (mpAudioPolicyDev)
audio_policy_dev_close(mpAudioPolicyDev);
}
status_t AudioPolicyService::setDeviceConnectionState(audio_devices_t device,
audio_policy_dev_state_t state,
const char *device_address)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (!audio_is_output_device(device) && !audio_is_input_device(device)) {
return BAD_VALUE;
}
if (state != AUDIO_POLICY_DEVICE_STATE_AVAILABLE &&
state != AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE) {
return BAD_VALUE;
}
ALOGV("setDeviceConnectionState() tid %d", gettid());
Mutex::Autolock _l(mLock);
return mpAudioPolicy->set_device_connection_state(mpAudioPolicy, device,
state, device_address);
}
audio_policy_dev_state_t AudioPolicyService::getDeviceConnectionState(
audio_devices_t device,
const char *device_address)
{
if (mpAudioPolicy == NULL) {
return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE;
}
return mpAudioPolicy->get_device_connection_state(mpAudioPolicy, device,
device_address);
}
status_t AudioPolicyService::setPhoneState(audio_mode_t state)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (uint32_t(state) >= AUDIO_MODE_CNT) {
return BAD_VALUE;
}
ALOGV("setPhoneState() tid %d", gettid());
// TODO: check if it is more appropriate to do it in platform specific policy manager
AudioSystem::setMode(state);
Mutex::Autolock _l(mLock);
mpAudioPolicy->set_phone_state(mpAudioPolicy, state);
return NO_ERROR;
}
status_t AudioPolicyService::setForceUse(audio_policy_force_use_t usage,
audio_policy_forced_cfg_t config)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (usage < 0 || usage >= AUDIO_POLICY_FORCE_USE_CNT) {
return BAD_VALUE;
}
if (config < 0 || config >= AUDIO_POLICY_FORCE_CFG_CNT) {
return BAD_VALUE;
}
ALOGV("setForceUse() tid %d", gettid());
Mutex::Autolock _l(mLock);
mpAudioPolicy->set_force_use(mpAudioPolicy, usage, config);
return NO_ERROR;
}
audio_policy_forced_cfg_t AudioPolicyService::getForceUse(audio_policy_force_use_t usage)
{
if (mpAudioPolicy == NULL) {
return AUDIO_POLICY_FORCE_NONE;
}
if (usage < 0 || usage >= AUDIO_POLICY_FORCE_USE_CNT) {
return AUDIO_POLICY_FORCE_NONE;
}
return mpAudioPolicy->get_force_use(mpAudioPolicy, usage);
}
audio_io_handle_t AudioPolicyService::getOutput(audio_stream_type_t stream,
uint32_t samplingRate,
uint32_t format,
uint32_t channels,
audio_policy_output_flags_t flags)
{
if (mpAudioPolicy == NULL) {
return 0;
}
ALOGV("getOutput() tid %d", gettid());
Mutex::Autolock _l(mLock);
return mpAudioPolicy->get_output(mpAudioPolicy, stream, samplingRate, format, channels, flags);
}
status_t AudioPolicyService::startOutput(audio_io_handle_t output,
audio_stream_type_t stream,
int session)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
ALOGV("startOutput() tid %d", gettid());
Mutex::Autolock _l(mLock);
return mpAudioPolicy->start_output(mpAudioPolicy, output, stream, session);
}
status_t AudioPolicyService::stopOutput(audio_io_handle_t output,
audio_stream_type_t stream,
int session)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
ALOGV("stopOutput() tid %d", gettid());
Mutex::Autolock _l(mLock);
return mpAudioPolicy->stop_output(mpAudioPolicy, output, stream, session);
}
void AudioPolicyService::releaseOutput(audio_io_handle_t output)
{
if (mpAudioPolicy == NULL) {
return;
}
ALOGV("releaseOutput() tid %d", gettid());
Mutex::Autolock _l(mLock);
mpAudioPolicy->release_output(mpAudioPolicy, output);
}
audio_io_handle_t AudioPolicyService::getInput(int inputSource,
uint32_t samplingRate,
uint32_t format,
uint32_t channels,
audio_in_acoustics_t acoustics,
int audioSession)
{
if (mpAudioPolicy == NULL) {
return 0;
}
Mutex::Autolock _l(mLock);
audio_io_handle_t input = mpAudioPolicy->get_input(mpAudioPolicy, inputSource, samplingRate,
format, channels, acoustics);
if (input == 0) {
return input;
}
// create audio pre processors according to input source
ssize_t index = mInputSources.indexOfKey((audio_source_t)inputSource);
if (index < 0) {
return input;
}
ssize_t idx = mInputs.indexOfKey(input);
InputDesc *inputDesc;
if (idx < 0) {
inputDesc = new InputDesc();
inputDesc->mSessionId = audioSession;
mInputs.add(input, inputDesc);
} else {
inputDesc = mInputs.valueAt(idx);
}
Vector <EffectDesc *> effects = mInputSources.valueAt(index)->mEffects;
for (size_t i = 0; i < effects.size(); i++) {
EffectDesc *effect = effects[i];
sp<AudioEffect> fx = new AudioEffect(NULL, &effect->mUuid, -1, 0, 0, audioSession, input);
status_t status = fx->initCheck();
if (status != NO_ERROR && status != ALREADY_EXISTS) {
ALOGW("Failed to create Fx %s on input %d", effect->mName, input);
// fx goes out of scope and strong ref on AudioEffect is released
continue;
}
for (size_t j = 0; j < effect->mParams.size(); j++) {
fx->setParameter(effect->mParams[j]);
}
inputDesc->mEffects.add(fx);
}
setPreProcessorEnabled(inputDesc, true);
return input;
}
status_t AudioPolicyService::startInput(audio_io_handle_t input)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
Mutex::Autolock _l(mLock);
return mpAudioPolicy->start_input(mpAudioPolicy, input);
}
status_t AudioPolicyService::stopInput(audio_io_handle_t input)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
Mutex::Autolock _l(mLock);
return mpAudioPolicy->stop_input(mpAudioPolicy, input);
}
void AudioPolicyService::releaseInput(audio_io_handle_t input)
{
if (mpAudioPolicy == NULL) {
return;
}
Mutex::Autolock _l(mLock);
mpAudioPolicy->release_input(mpAudioPolicy, input);
ssize_t index = mInputs.indexOfKey(input);
if (index < 0) {
return;
}
InputDesc *inputDesc = mInputs.valueAt(index);
setPreProcessorEnabled(inputDesc, false);
inputDesc->mEffects.clear();
delete inputDesc;
mInputs.removeItemsAt(index);
}
status_t AudioPolicyService::initStreamVolume(audio_stream_type_t stream,
int indexMin,
int indexMax)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (uint32_t(stream) >= AUDIO_STREAM_CNT) {
return BAD_VALUE;
}
mpAudioPolicy->init_stream_volume(mpAudioPolicy, stream, indexMin, indexMax);
return NO_ERROR;
}
status_t AudioPolicyService::setStreamVolumeIndex(audio_stream_type_t stream,
int index,
audio_devices_t device)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (uint32_t(stream) >= AUDIO_STREAM_CNT) {
return BAD_VALUE;
}
if (mpAudioPolicy->set_stream_volume_index_for_device) {
return mpAudioPolicy->set_stream_volume_index_for_device(mpAudioPolicy,
stream,
index,
device);
} else {
return mpAudioPolicy->set_stream_volume_index(mpAudioPolicy, stream, index);
}
}
status_t AudioPolicyService::getStreamVolumeIndex(audio_stream_type_t stream,
int *index,
audio_devices_t device)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
if (uint32_t(stream) >= AUDIO_STREAM_CNT) {
return BAD_VALUE;
}
if (mpAudioPolicy->get_stream_volume_index_for_device) {
return mpAudioPolicy->get_stream_volume_index_for_device(mpAudioPolicy,
stream,
index,
device);
} else {
return mpAudioPolicy->get_stream_volume_index(mpAudioPolicy, stream, index);
}
}
uint32_t AudioPolicyService::getStrategyForStream(audio_stream_type_t stream)
{
if (mpAudioPolicy == NULL) {
return 0;
}
return mpAudioPolicy->get_strategy_for_stream(mpAudioPolicy, stream);
}
uint32_t AudioPolicyService::getDevicesForStream(audio_stream_type_t stream)
{
if (mpAudioPolicy == NULL) {
return 0;
}
return mpAudioPolicy->get_devices_for_stream(mpAudioPolicy, stream);
}
audio_io_handle_t AudioPolicyService::getOutputForEffect(effect_descriptor_t *desc)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
Mutex::Autolock _l(mLock);
return mpAudioPolicy->get_output_for_effect(mpAudioPolicy, desc);
}
status_t AudioPolicyService::registerEffect(effect_descriptor_t *desc,
audio_io_handle_t io,
uint32_t strategy,
int session,
int id)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
return mpAudioPolicy->register_effect(mpAudioPolicy, desc, io, strategy, session, id);
}
status_t AudioPolicyService::unregisterEffect(int id)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
return mpAudioPolicy->unregister_effect(mpAudioPolicy, id);
}
status_t AudioPolicyService::setEffectEnabled(int id, bool enabled)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
return mpAudioPolicy->set_effect_enabled(mpAudioPolicy, id, enabled);
}
bool AudioPolicyService::isStreamActive(audio_stream_type_t stream, uint32_t inPastMs) const
{
if (mpAudioPolicy == NULL) {
return 0;
}
Mutex::Autolock _l(mLock);
return mpAudioPolicy->is_stream_active(mpAudioPolicy, stream, inPastMs);
}
status_t AudioPolicyService::queryDefaultPreProcessing(int audioSession,
effect_descriptor_t *descriptors,
uint32_t *count)
{
if (mpAudioPolicy == NULL) {
*count = 0;
return NO_INIT;
}
Mutex::Autolock _l(mLock);
status_t status = NO_ERROR;
size_t index;
for (index = 0; index < mInputs.size(); index++) {
if (mInputs.valueAt(index)->mSessionId == audioSession) {
break;
}
}
if (index == mInputs.size()) {
*count = 0;
return BAD_VALUE;
}
Vector< sp<AudioEffect> > effects = mInputs.valueAt(index)->mEffects;
for (size_t i = 0; i < effects.size(); i++) {
effect_descriptor_t desc = effects[i]->descriptor();
if (i < *count) {
memcpy(descriptors + i, &desc, sizeof(effect_descriptor_t));
}
}
if (effects.size() > *count) {
status = NO_MEMORY;
}
*count = effects.size();
return status;
}
void AudioPolicyService::binderDied(const wp<IBinder>& who) {
ALOGW("binderDied() %p, tid %d, calling tid %d", who.unsafe_get(), gettid(),
IPCThreadState::self()->getCallingPid());
}
static bool tryLock(Mutex& mutex)
{
bool locked = false;
for (int i = 0; i < kDumpLockRetries; ++i) {
if (mutex.tryLock() == NO_ERROR) {
locked = true;
break;
}
usleep(kDumpLockSleepUs);
}
return locked;
}
status_t AudioPolicyService::dumpInternals(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, "PolicyManager Interface: %p\n", mpAudioPolicy);
result.append(buffer);
snprintf(buffer, SIZE, "Command Thread: %p\n", mAudioCommandThread.get());
result.append(buffer);
snprintf(buffer, SIZE, "Tones Thread: %p\n", mTonePlaybackThread.get());
result.append(buffer);
write(fd, result.string(), result.size());
return NO_ERROR;
}
status_t AudioPolicyService::dump(int fd, const Vector<String16>& args)
{
if (!checkCallingPermission(String16("android.permission.DUMP"))) {
dumpPermissionDenial(fd);
} else {
bool locked = tryLock(mLock);
if (!locked) {
String8 result(kDeadlockedString);
write(fd, result.string(), result.size());
}
dumpInternals(fd);
if (mAudioCommandThread != NULL) {
mAudioCommandThread->dump(fd);
}
if (mTonePlaybackThread != NULL) {
mTonePlaybackThread->dump(fd);
}
if (mpAudioPolicy) {
mpAudioPolicy->dump(mpAudioPolicy, fd);
}
if (locked) mLock.unlock();
}
return NO_ERROR;
}
status_t AudioPolicyService::dumpPermissionDenial(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, "Permission Denial: "
"can't dump AudioPolicyService from pid=%d, uid=%d\n",
IPCThreadState::self()->getCallingPid(),
IPCThreadState::self()->getCallingUid());
result.append(buffer);
write(fd, result.string(), result.size());
return NO_ERROR;
}
void AudioPolicyService::setPreProcessorEnabled(InputDesc *inputDesc, bool enabled)
{
Vector<sp<AudioEffect> > fxVector = inputDesc->mEffects;
for (size_t i = 0; i < fxVector.size(); i++) {
sp<AudioEffect> fx = fxVector.itemAt(i);
fx->setEnabled(enabled);
}
}
status_t AudioPolicyService::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
return BnAudioPolicyService::onTransact(code, data, reply, flags);
}
// ----------- AudioPolicyService::AudioCommandThread implementation ----------
AudioPolicyService::AudioCommandThread::AudioCommandThread(String8 name)
: Thread(false), mName(name)
{
mpToneGenerator = NULL;
}
AudioPolicyService::AudioCommandThread::~AudioCommandThread()
{
if (mName != "" && !mAudioCommands.isEmpty()) {
release_wake_lock(mName.string());
}
mAudioCommands.clear();
if (mpToneGenerator != NULL) delete mpToneGenerator;
}
void AudioPolicyService::AudioCommandThread::onFirstRef()
{
if (mName != "") {
run(mName.string(), ANDROID_PRIORITY_AUDIO);
} else {
run("AudioCommandThread", ANDROID_PRIORITY_AUDIO);
}
}
bool AudioPolicyService::AudioCommandThread::threadLoop()
{
nsecs_t waitTime = INT64_MAX;
mLock.lock();
while (!exitPending())
{
while(!mAudioCommands.isEmpty()) {
nsecs_t curTime = systemTime();
// commands are sorted by increasing time stamp: execute them from index 0 and up
if (mAudioCommands[0]->mTime <= curTime) {
AudioCommand *command = mAudioCommands[0];
mAudioCommands.removeAt(0);
mLastCommand = *command;
switch (command->mCommand) {
case START_TONE: {
mLock.unlock();
ToneData *data = (ToneData *)command->mParam;
ALOGV("AudioCommandThread() processing start tone %d on stream %d",
data->mType, data->mStream);
if (mpToneGenerator != NULL)
delete mpToneGenerator;
mpToneGenerator = new ToneGenerator(data->mStream, 1.0);
mpToneGenerator->startTone(data->mType);
delete data;
mLock.lock();
}break;
case STOP_TONE: {
mLock.unlock();
ALOGV("AudioCommandThread() processing stop tone");
if (mpToneGenerator != NULL) {
mpToneGenerator->stopTone();
delete mpToneGenerator;
mpToneGenerator = NULL;
}
mLock.lock();
}break;
case SET_VOLUME: {
VolumeData *data = (VolumeData *)command->mParam;
ALOGV("AudioCommandThread() processing set volume stream %d, \
volume %f, output %d", data->mStream, data->mVolume, data->mIO);
command->mStatus = AudioSystem::setStreamVolume(data->mStream,
data->mVolume,
data->mIO);
if (command->mWaitStatus) {
command->mCond.signal();
mWaitWorkCV.wait(mLock);
}
delete data;
}break;
case SET_PARAMETERS: {
ParametersData *data = (ParametersData *)command->mParam;
ALOGV("AudioCommandThread() processing set parameters string %s, io %d",
data->mKeyValuePairs.string(), data->mIO);
command->mStatus = AudioSystem::setParameters(data->mIO, data->mKeyValuePairs);
if (command->mWaitStatus) {
command->mCond.signal();
mWaitWorkCV.wait(mLock);
}
delete data;
}break;
case SET_VOICE_VOLUME: {
VoiceVolumeData *data = (VoiceVolumeData *)command->mParam;
ALOGV("AudioCommandThread() processing set voice volume volume %f",
data->mVolume);
command->mStatus = AudioSystem::setVoiceVolume(data->mVolume);
if (command->mWaitStatus) {
command->mCond.signal();
mWaitWorkCV.wait(mLock);
}
delete data;
}break;
default:
ALOGW("AudioCommandThread() unknown command %d", command->mCommand);
}
delete command;
waitTime = INT64_MAX;
} else {
waitTime = mAudioCommands[0]->mTime - curTime;
break;
}
}
// release delayed commands wake lock
if (mName != "" && mAudioCommands.isEmpty()) {
release_wake_lock(mName.string());
}
ALOGV("AudioCommandThread() going to sleep");
mWaitWorkCV.waitRelative(mLock, waitTime);
ALOGV("AudioCommandThread() waking up");
}
mLock.unlock();
return false;
}
status_t AudioPolicyService::AudioCommandThread::dump(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, "AudioCommandThread %p Dump\n", this);
result.append(buffer);
write(fd, result.string(), result.size());
bool locked = tryLock(mLock);
if (!locked) {
String8 result2(kCmdDeadlockedString);
write(fd, result2.string(), result2.size());
}
snprintf(buffer, SIZE, "- Commands:\n");
result = String8(buffer);
result.append(" Command Time Wait pParam\n");
for (int i = 0; i < (int)mAudioCommands.size(); i++) {
mAudioCommands[i]->dump(buffer, SIZE);
result.append(buffer);
}
result.append(" Last Command\n");
mLastCommand.dump(buffer, SIZE);
result.append(buffer);
write(fd, result.string(), result.size());
if (locked) mLock.unlock();
return NO_ERROR;
}
void AudioPolicyService::AudioCommandThread::startToneCommand(int type, audio_stream_type_t stream)
{
AudioCommand *command = new AudioCommand();
command->mCommand = START_TONE;
ToneData *data = new ToneData();
data->mType = type;
data->mStream = stream;
command->mParam = (void *)data;
command->mWaitStatus = false;
Mutex::Autolock _l(mLock);
insertCommand_l(command);
ALOGV("AudioCommandThread() adding tone start type %d, stream %d", type, stream);
mWaitWorkCV.signal();
}
void AudioPolicyService::AudioCommandThread::stopToneCommand()
{
AudioCommand *command = new AudioCommand();
command->mCommand = STOP_TONE;
command->mParam = NULL;
command->mWaitStatus = false;
Mutex::Autolock _l(mLock);
insertCommand_l(command);
ALOGV("AudioCommandThread() adding tone stop");
mWaitWorkCV.signal();
}
status_t AudioPolicyService::AudioCommandThread::volumeCommand(audio_stream_type_t stream,
float volume,
int output,
int delayMs)
{
status_t status = NO_ERROR;
AudioCommand *command = new AudioCommand();
command->mCommand = SET_VOLUME;
VolumeData *data = new VolumeData();
data->mStream = stream;
data->mVolume = volume;
data->mIO = output;
command->mParam = data;
if (delayMs == 0) {
command->mWaitStatus = true;
} else {
command->mWaitStatus = false;
}
Mutex::Autolock _l(mLock);
insertCommand_l(command, delayMs);
ALOGV("AudioCommandThread() adding set volume stream %d, volume %f, output %d",
stream, volume, output);
mWaitWorkCV.signal();
if (command->mWaitStatus) {
command->mCond.wait(mLock);
status = command->mStatus;
mWaitWorkCV.signal();
}
return status;
}
status_t AudioPolicyService::AudioCommandThread::parametersCommand(int ioHandle,
const char *keyValuePairs,
int delayMs)
{
status_t status = NO_ERROR;
AudioCommand *command = new AudioCommand();
command->mCommand = SET_PARAMETERS;
ParametersData *data = new ParametersData();
data->mIO = ioHandle;
data->mKeyValuePairs = String8(keyValuePairs);
command->mParam = data;
if (delayMs == 0) {
command->mWaitStatus = true;
} else {
command->mWaitStatus = false;
}
Mutex::Autolock _l(mLock);
insertCommand_l(command, delayMs);
ALOGV("AudioCommandThread() adding set parameter string %s, io %d ,delay %d",
keyValuePairs, ioHandle, delayMs);
mWaitWorkCV.signal();
if (command->mWaitStatus) {
command->mCond.wait(mLock);
status = command->mStatus;
mWaitWorkCV.signal();
}
return status;
}
status_t AudioPolicyService::AudioCommandThread::voiceVolumeCommand(float volume, int delayMs)
{
status_t status = NO_ERROR;
AudioCommand *command = new AudioCommand();
command->mCommand = SET_VOICE_VOLUME;
VoiceVolumeData *data = new VoiceVolumeData();
data->mVolume = volume;
command->mParam = data;
if (delayMs == 0) {
command->mWaitStatus = true;
} else {
command->mWaitStatus = false;
}
Mutex::Autolock _l(mLock);
insertCommand_l(command, delayMs);
ALOGV("AudioCommandThread() adding set voice volume volume %f", volume);
mWaitWorkCV.signal();
if (command->mWaitStatus) {
command->mCond.wait(mLock);
status = command->mStatus;
mWaitWorkCV.signal();
}
return status;
}
// insertCommand_l() must be called with mLock held
void AudioPolicyService::AudioCommandThread::insertCommand_l(AudioCommand *command, int delayMs)
{
ssize_t i;
Vector <AudioCommand *> removedCommands;
command->mTime = systemTime() + milliseconds(delayMs);
// acquire wake lock to make sure delayed commands are processed
if (mName != "" && mAudioCommands.isEmpty()) {
acquire_wake_lock(PARTIAL_WAKE_LOCK, mName.string());
}
// check same pending commands with later time stamps and eliminate them
for (i = mAudioCommands.size()-1; i >= 0; i--) {
AudioCommand *command2 = mAudioCommands[i];
// commands are sorted by increasing time stamp: no need to scan the rest of mAudioCommands
if (command2->mTime <= command->mTime) break;
if (command2->mCommand != command->mCommand) continue;
switch (command->mCommand) {
case SET_PARAMETERS: {
ParametersData *data = (ParametersData *)command->mParam;
ParametersData *data2 = (ParametersData *)command2->mParam;
if (data->mIO != data2->mIO) break;
ALOGV("Comparing parameter command %s to new command %s",
data2->mKeyValuePairs.string(), data->mKeyValuePairs.string());
AudioParameter param = AudioParameter(data->mKeyValuePairs);
AudioParameter param2 = AudioParameter(data2->mKeyValuePairs);
for (size_t j = 0; j < param.size(); j++) {
String8 key;
String8 value;
param.getAt(j, key, value);
for (size_t k = 0; k < param2.size(); k++) {
String8 key2;
String8 value2;
param2.getAt(k, key2, value2);
if (key2 == key) {
param2.remove(key2);
ALOGV("Filtering out parameter %s", key2.string());
break;
}
}
}
// if all keys have been filtered out, remove the command.
// otherwise, update the key value pairs
if (param2.size() == 0) {
removedCommands.add(command2);
} else {
data2->mKeyValuePairs = param2.toString();
}
} break;
case SET_VOLUME: {
VolumeData *data = (VolumeData *)command->mParam;
VolumeData *data2 = (VolumeData *)command2->mParam;
if (data->mIO != data2->mIO) break;
if (data->mStream != data2->mStream) break;
ALOGV("Filtering out volume command on output %d for stream %d",
data->mIO, data->mStream);
removedCommands.add(command2);
} break;
case START_TONE:
case STOP_TONE:
default:
break;
}
}
// remove filtered commands
for (size_t j = 0; j < removedCommands.size(); j++) {
// removed commands always have time stamps greater than current command
for (size_t k = i + 1; k < mAudioCommands.size(); k++) {
if (mAudioCommands[k] == removedCommands[j]) {
ALOGV("suppressing command: %d", mAudioCommands[k]->mCommand);
mAudioCommands.removeAt(k);
break;
}
}
}
removedCommands.clear();
// insert command at the right place according to its time stamp
ALOGV("inserting command: %d at index %d, num commands %d",
command->mCommand, (int)i+1, mAudioCommands.size());
mAudioCommands.insertAt(command, i + 1);
}
void AudioPolicyService::AudioCommandThread::exit()
{
ALOGV("AudioCommandThread::exit");
{
AutoMutex _l(mLock);
requestExit();
mWaitWorkCV.signal();
}
requestExitAndWait();
}
void AudioPolicyService::AudioCommandThread::AudioCommand::dump(char* buffer, size_t size)
{
snprintf(buffer, size, " %02d %06d.%03d %01u %p\n",
mCommand,
(int)ns2s(mTime),
(int)ns2ms(mTime)%1000,
mWaitStatus,
mParam);
}
/******* helpers for the service_ops callbacks defined below *********/
void AudioPolicyService::setParameters(audio_io_handle_t ioHandle,
const char *keyValuePairs,
int delayMs)
{
mAudioCommandThread->parametersCommand((int)ioHandle, keyValuePairs,
delayMs);
}
int AudioPolicyService::setStreamVolume(audio_stream_type_t stream,
float volume,
audio_io_handle_t output,
int delayMs)
{
return (int)mAudioCommandThread->volumeCommand(stream, volume,
(int)output, delayMs);
}
int AudioPolicyService::startTone(audio_policy_tone_t tone,
audio_stream_type_t stream)
{
if (tone != AUDIO_POLICY_TONE_IN_CALL_NOTIFICATION)
ALOGE("startTone: illegal tone requested (%d)", tone);
if (stream != AUDIO_STREAM_VOICE_CALL)
ALOGE("startTone: illegal stream (%d) requested for tone %d", stream,
tone);
mTonePlaybackThread->startToneCommand(ToneGenerator::TONE_SUP_CALL_WAITING,
AUDIO_STREAM_VOICE_CALL);
return 0;
}
int AudioPolicyService::stopTone()
{
mTonePlaybackThread->stopToneCommand();
return 0;
}
int AudioPolicyService::setVoiceVolume(float volume, int delayMs)
{
return (int)mAudioCommandThread->voiceVolumeCommand(volume, delayMs);
}
// ----------------------------------------------------------------------------
// Audio pre-processing configuration
// ----------------------------------------------------------------------------
/*static*/ const char * const AudioPolicyService::kInputSourceNames[AUDIO_SOURCE_CNT -1] = {
MIC_SRC_TAG,
VOICE_UL_SRC_TAG,
VOICE_DL_SRC_TAG,
VOICE_CALL_SRC_TAG,
CAMCORDER_SRC_TAG,
VOICE_REC_SRC_TAG,
VOICE_COMM_SRC_TAG
};
// returns the audio_source_t enum corresponding to the input source name or
// AUDIO_SOURCE_CNT is no match found
audio_source_t AudioPolicyService::inputSourceNameToEnum(const char *name)
{
int i;
for (i = AUDIO_SOURCE_MIC; i < AUDIO_SOURCE_CNT; i++) {
if (strcmp(name, kInputSourceNames[i - AUDIO_SOURCE_MIC]) == 0) {
ALOGV("inputSourceNameToEnum found source %s %d", name, i);
break;
}
}
return (audio_source_t)i;
}
size_t AudioPolicyService::growParamSize(char *param,
size_t size,
size_t *curSize,
size_t *totSize)
{
// *curSize is at least sizeof(effect_param_t) + 2 * sizeof(int)
size_t pos = ((*curSize - 1 ) / size + 1) * size;
if (pos + size > *totSize) {
while (pos + size > *totSize) {
*totSize += ((*totSize + 7) / 8) * 4;
}
param = (char *)realloc(param, *totSize);
}
*curSize = pos + size;
return pos;
}
size_t AudioPolicyService::readParamValue(cnode *node,
char *param,
size_t *curSize,
size_t *totSize)
{
if (strncmp(node->name, SHORT_TAG, sizeof(SHORT_TAG) + 1) == 0) {
size_t pos = growParamSize(param, sizeof(short), curSize, totSize);
*(short *)((char *)param + pos) = (short)atoi(node->value);
ALOGV("readParamValue() reading short %d", *(short *)((char *)param + pos));
return sizeof(short);
} else if (strncmp(node->name, INT_TAG, sizeof(INT_TAG) + 1) == 0) {
size_t pos = growParamSize(param, sizeof(int), curSize, totSize);
*(int *)((char *)param + pos) = atoi(node->value);
ALOGV("readParamValue() reading int %d", *(int *)((char *)param + pos));
return sizeof(int);
} else if (strncmp(node->name, FLOAT_TAG, sizeof(FLOAT_TAG) + 1) == 0) {
size_t pos = growParamSize(param, sizeof(float), curSize, totSize);
*(float *)((char *)param + pos) = (float)atof(node->value);
ALOGV("readParamValue() reading float %f",*(float *)((char *)param + pos));
return sizeof(float);
} else if (strncmp(node->name, BOOL_TAG, sizeof(BOOL_TAG) + 1) == 0) {
size_t pos = growParamSize(param, sizeof(bool), curSize, totSize);
if (strncmp(node->value, "false", strlen("false") + 1) == 0) {
*(bool *)((char *)param + pos) = false;
} else {
*(bool *)((char *)param + pos) = true;
}
ALOGV("readParamValue() reading bool %s",*(bool *)((char *)param + pos) ? "true" : "false");
return sizeof(bool);
} else if (strncmp(node->name, STRING_TAG, sizeof(STRING_TAG) + 1) == 0) {
size_t len = strnlen(node->value, EFFECT_STRING_LEN_MAX);
if (*curSize + len + 1 > *totSize) {
*totSize = *curSize + len + 1;
param = (char *)realloc(param, *totSize);
}
strncpy(param + *curSize, node->value, len);
*curSize += len;
param[*curSize] = '\0';
ALOGV("readParamValue() reading string %s", param + *curSize - len);
return len;
}
ALOGW("readParamValue() unknown param type %s", node->name);
return 0;
}
effect_param_t *AudioPolicyService::loadEffectParameter(cnode *root)
{
cnode *param;
cnode *value;
size_t curSize = sizeof(effect_param_t);
size_t totSize = sizeof(effect_param_t) + 2 * sizeof(int);
effect_param_t *fx_param = (effect_param_t *)malloc(totSize);
param = config_find(root, PARAM_TAG);
value = config_find(root, VALUE_TAG);
if (param == NULL && value == NULL) {
// try to parse simple parameter form {int int}
param = root->first_child;
if (param) {
// Note: that a pair of random strings is read as 0 0
int *ptr = (int *)fx_param->data;
int *ptr2 = (int *)((char *)param + sizeof(effect_param_t));
ALOGW("loadEffectParameter() ptr %p ptr2 %p", ptr, ptr2);
*ptr++ = atoi(param->name);
*ptr = atoi(param->value);
fx_param->psize = sizeof(int);
fx_param->vsize = sizeof(int);
return fx_param;
}
}
if (param == NULL || value == NULL) {
ALOGW("loadEffectParameter() invalid parameter description %s", root->name);
goto error;
}
fx_param->psize = 0;
param = param->first_child;
while (param) {
ALOGV("loadEffectParameter() reading param of type %s", param->name);
size_t size = readParamValue(param, (char *)fx_param, &curSize, &totSize);
if (size == 0) {
goto error;
}
fx_param->psize += size;
param = param->next;
}
// align start of value field on 32 bit boundary
curSize = ((curSize - 1 ) / sizeof(int) + 1) * sizeof(int);
fx_param->vsize = 0;
value = value->first_child;
while (value) {
ALOGV("loadEffectParameter() reading value of type %s", value->name);
size_t size = readParamValue(value, (char *)fx_param, &curSize, &totSize);
if (size == 0) {
goto error;
}
fx_param->vsize += size;
value = value->next;
}
return fx_param;
error:
delete fx_param;
return NULL;
}
void AudioPolicyService::loadEffectParameters(cnode *root, Vector <effect_param_t *>& params)
{
cnode *node = root->first_child;
while (node) {
ALOGV("loadEffectParameters() loading param %s", node->name);
effect_param_t *param = loadEffectParameter(node);
if (param == NULL) {
node = node->next;
continue;
}
params.add(param);
node = node->next;
}
}
AudioPolicyService::InputSourceDesc *AudioPolicyService::loadInputSource(
cnode *root,
const Vector <EffectDesc *>& effects)
{
cnode *node = root->first_child;
if (node == NULL) {
ALOGW("loadInputSource() empty element %s", root->name);
return NULL;
}
InputSourceDesc *source = new InputSourceDesc();
while (node) {
size_t i;
for (i = 0; i < effects.size(); i++) {
if (strncmp(effects[i]->mName, node->name, EFFECT_STRING_LEN_MAX) == 0) {
ALOGV("loadInputSource() found effect %s in list", node->name);
break;
}
}
if (i == effects.size()) {
ALOGV("loadInputSource() effect %s not in list", node->name);
node = node->next;
continue;
}
EffectDesc *effect = new EffectDesc(*effects[i]);
loadEffectParameters(node, effect->mParams);
ALOGV("loadInputSource() adding effect %s uuid %08x", effect->mName, effect->mUuid.timeLow);
source->mEffects.add(effect);
node = node->next;
}
if (source->mEffects.size() == 0) {
ALOGW("loadInputSource() no valid effects found in source %s", root->name);
delete source;
return NULL;
}
return source;
}
status_t AudioPolicyService::loadInputSources(cnode *root, const Vector <EffectDesc *>& effects)
{
cnode *node = config_find(root, PREPROCESSING_TAG);
if (node == NULL) {
return -ENOENT;
}
node = node->first_child;
while (node) {
audio_source_t source = inputSourceNameToEnum(node->name);
if (source == AUDIO_SOURCE_CNT) {
ALOGW("loadInputSources() invalid input source %s", node->name);
node = node->next;
continue;
}
ALOGV("loadInputSources() loading input source %s", node->name);
InputSourceDesc *desc = loadInputSource(node, effects);
if (desc == NULL) {
node = node->next;
continue;
}
mInputSources.add(source, desc);
node = node->next;
}
return NO_ERROR;
}
AudioPolicyService::EffectDesc *AudioPolicyService::loadEffect(cnode *root)
{
cnode *node = config_find(root, UUID_TAG);
if (node == NULL) {
return NULL;
}
effect_uuid_t uuid;
if (AudioEffect::stringToGuid(node->value, &uuid) != NO_ERROR) {
ALOGW("loadEffect() invalid uuid %s", node->value);
return NULL;
}
EffectDesc *effect = new EffectDesc();
effect->mName = strdup(root->name);
memcpy(&effect->mUuid, &uuid, sizeof(effect_uuid_t));
return effect;
}
status_t AudioPolicyService::loadEffects(cnode *root, Vector <EffectDesc *>& effects)
{
cnode *node = config_find(root, EFFECTS_TAG);
if (node == NULL) {
return -ENOENT;
}
node = node->first_child;
while (node) {
ALOGV("loadEffects() loading effect %s", node->name);
EffectDesc *effect = loadEffect(node);
if (effect == NULL) {
node = node->next;
continue;
}
effects.add(effect);
node = node->next;
}
return NO_ERROR;
}
status_t AudioPolicyService::loadPreProcessorConfig(const char *path)
{
cnode *root;
char *data;
data = (char *)load_file(path, NULL);
if (data == NULL) {
return -ENODEV;
}
root = config_node("", "");
config_load(root, data);
Vector <EffectDesc *> effects;
loadEffects(root, effects);
loadInputSources(root, effects);
config_free(root);
free(root);
free(data);
return NO_ERROR;
}
/* implementation of the interface to the policy manager */
extern "C" {
static audio_io_handle_t aps_open_output(void *service,
uint32_t *pDevices,
uint32_t *pSamplingRate,
uint32_t *pFormat,
uint32_t *pChannels,
uint32_t *pLatencyMs,
audio_policy_output_flags_t flags)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL) {
ALOGW("%s: could not get AudioFlinger", __func__);
return 0;
}
return af->openOutput(pDevices, pSamplingRate, pFormat, pChannels,
pLatencyMs, flags);
}
static audio_io_handle_t aps_open_dup_output(void *service,
audio_io_handle_t output1,
audio_io_handle_t output2)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL) {
ALOGW("%s: could not get AudioFlinger", __func__);
return 0;
}
return af->openDuplicateOutput(output1, output2);
}
static int aps_close_output(void *service, audio_io_handle_t output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL)
return PERMISSION_DENIED;
return af->closeOutput(output);
}
static int aps_suspend_output(void *service, audio_io_handle_t output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL) {
ALOGW("%s: could not get AudioFlinger", __func__);
return PERMISSION_DENIED;
}
return af->suspendOutput(output);
}
static int aps_restore_output(void *service, audio_io_handle_t output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL) {
ALOGW("%s: could not get AudioFlinger", __func__);
return PERMISSION_DENIED;
}
return af->restoreOutput(output);
}
static audio_io_handle_t aps_open_input(void *service,
uint32_t *pDevices,
uint32_t *pSamplingRate,
uint32_t *pFormat,
uint32_t *pChannels,
uint32_t acoustics)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL) {
ALOGW("%s: could not get AudioFlinger", __func__);
return 0;
}
return af->openInput(pDevices, pSamplingRate, pFormat, pChannels,
acoustics);
}
static int aps_close_input(void *service, audio_io_handle_t input)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL)
return PERMISSION_DENIED;
return af->closeInput(input);
}
static int aps_set_stream_output(void *service, audio_stream_type_t stream,
audio_io_handle_t output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL)
return PERMISSION_DENIED;
return af->setStreamOutput(stream, output);
}
static int aps_move_effects(void *service, int session,
audio_io_handle_t src_output,
audio_io_handle_t dst_output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL)
return PERMISSION_DENIED;
return af->moveEffects(session, (int)src_output, (int)dst_output);
}
static char * aps_get_parameters(void *service, audio_io_handle_t io_handle,
const char *keys)
{
String8 result = AudioSystem::getParameters(io_handle, String8(keys));
return strdup(result.string());
}
static void aps_set_parameters(void *service, audio_io_handle_t io_handle,
const char *kv_pairs, int delay_ms)
{
AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
audioPolicyService->setParameters(io_handle, kv_pairs, delay_ms);
}
static int aps_set_stream_volume(void *service, audio_stream_type_t stream,
float volume, audio_io_handle_t output,
int delay_ms)
{
AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
return audioPolicyService->setStreamVolume(stream, volume, output,
delay_ms);
}
static int aps_start_tone(void *service, audio_policy_tone_t tone,
audio_stream_type_t stream)
{
AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
return audioPolicyService->startTone(tone, stream);
}
static int aps_stop_tone(void *service)
{
AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
return audioPolicyService->stopTone();
}
static int aps_set_voice_volume(void *service, float volume, int delay_ms)
{
AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
return audioPolicyService->setVoiceVolume(volume, delay_ms);
}
}; // extern "C"
namespace {
struct audio_policy_service_ops aps_ops = {
open_output : aps_open_output,
open_duplicate_output : aps_open_dup_output,
close_output : aps_close_output,
suspend_output : aps_suspend_output,
restore_output : aps_restore_output,
open_input : aps_open_input,
close_input : aps_close_input,
set_stream_volume : aps_set_stream_volume,
set_stream_output : aps_set_stream_output,
set_parameters : aps_set_parameters,
get_parameters : aps_get_parameters,
start_tone : aps_start_tone,
stop_tone : aps_stop_tone,
set_voice_volume : aps_set_voice_volume,
move_effects : aps_move_effects,
};
}; // namespace <unnamed>
}; // namespace android
|