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
|
/* //device/include/server/AudioFlinger/AudioFlinger.h
**
** Copyright 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.
*/
#ifndef ANDROID_AUDIO_FLINGER_H
#define ANDROID_AUDIO_FLINGER_H
#include <stdint.h>
#include <sys/types.h>
#include <limits.h>
#include <media/IAudioFlinger.h>
#include <media/IAudioFlingerClient.h>
#include <media/IAudioTrack.h>
#include <media/IAudioRecord.h>
#include <media/AudioSystem.h>
#include <utils/Atomic.h>
#include <utils/Errors.h>
#include <utils/threads.h>
#include <utils/SortedVector.h>
#include <utils/TypeHelpers.h>
#include <utils/Vector.h>
#include <binder/BinderService.h>
#include <binder/MemoryDealer.h>
#include <system/audio.h>
#include <hardware/audio.h>
#include "AudioBufferProvider.h"
#include <powermanager/IPowerManager.h>
namespace android {
class audio_track_cblk_t;
class effect_param_cblk_t;
class AudioMixer;
class AudioBuffer;
class AudioResampler;
// ----------------------------------------------------------------------------
static const nsecs_t kStandbyTimeInNsecs = seconds(3);
class AudioFlinger :
public BinderService<AudioFlinger>,
public BnAudioFlinger
{
friend class BinderService<AudioFlinger>;
public:
static const char* getServiceName() { return "media.audio_flinger"; }
virtual status_t dump(int fd, const Vector<String16>& args);
// IAudioFlinger interface
virtual sp<IAudioTrack> createTrack(
pid_t pid,
audio_stream_type_t streamType,
uint32_t sampleRate,
audio_format_t format,
uint32_t channelMask,
int frameCount,
uint32_t flags,
const sp<IMemory>& sharedBuffer,
audio_io_handle_t output,
int *sessionId,
status_t *status);
virtual uint32_t sampleRate(audio_io_handle_t output) const;
virtual int channelCount(audio_io_handle_t output) const;
virtual audio_format_t format(audio_io_handle_t output) const;
virtual size_t frameCount(audio_io_handle_t output) const;
virtual uint32_t latency(audio_io_handle_t output) const;
virtual status_t setMasterVolume(float value);
virtual status_t setMasterMute(bool muted);
virtual float masterVolume() const;
virtual bool masterMute() const;
virtual status_t setStreamVolume(audio_stream_type_t stream, float value,
audio_io_handle_t output);
virtual status_t setStreamMute(audio_stream_type_t stream, bool muted);
virtual float streamVolume(audio_stream_type_t stream,
audio_io_handle_t output) const;
virtual bool streamMute(audio_stream_type_t stream) const;
virtual status_t setMode(audio_mode_t mode);
virtual status_t setMicMute(bool state);
virtual bool getMicMute() const;
virtual status_t setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs);
virtual String8 getParameters(audio_io_handle_t ioHandle, const String8& keys) const;
virtual void registerClient(const sp<IAudioFlingerClient>& client);
virtual size_t getInputBufferSize(uint32_t sampleRate, audio_format_t format, int channelCount) const;
virtual unsigned int getInputFramesLost(audio_io_handle_t ioHandle) const;
virtual audio_io_handle_t openOutput(uint32_t *pDevices,
uint32_t *pSamplingRate,
audio_format_t *pFormat,
uint32_t *pChannels,
uint32_t *pLatencyMs,
uint32_t flags);
virtual audio_io_handle_t openDuplicateOutput(audio_io_handle_t output1,
audio_io_handle_t output2);
virtual status_t closeOutput(audio_io_handle_t output);
virtual status_t suspendOutput(audio_io_handle_t output);
virtual status_t restoreOutput(audio_io_handle_t output);
virtual audio_io_handle_t openInput(uint32_t *pDevices,
uint32_t *pSamplingRate,
audio_format_t *pFormat,
uint32_t *pChannels,
audio_in_acoustics_t acoustics);
virtual status_t closeInput(audio_io_handle_t input);
virtual status_t setStreamOutput(audio_stream_type_t stream, audio_io_handle_t output);
virtual status_t setVoiceVolume(float volume);
virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames,
audio_io_handle_t output) const;
virtual int newAudioSessionId();
virtual void acquireAudioSessionId(int audioSession);
virtual void releaseAudioSessionId(int audioSession);
virtual status_t queryNumberEffects(uint32_t *numEffects) const;
virtual status_t queryEffect(uint32_t index, effect_descriptor_t *descriptor) const;
virtual status_t getEffectDescriptor(const effect_uuid_t *pUuid,
effect_descriptor_t *descriptor) const;
virtual sp<IEffect> createEffect(pid_t pid,
effect_descriptor_t *pDesc,
const sp<IEffectClient>& effectClient,
int32_t priority,
audio_io_handle_t io,
int sessionId,
status_t *status,
int *id,
int *enabled);
virtual status_t moveEffects(int sessionId, audio_io_handle_t srcOutput,
audio_io_handle_t dstOutput);
enum hardware_call_state {
AUDIO_HW_IDLE = 0,
AUDIO_HW_INIT,
AUDIO_HW_OUTPUT_OPEN,
AUDIO_HW_OUTPUT_CLOSE,
AUDIO_HW_INPUT_OPEN,
AUDIO_HW_INPUT_CLOSE,
AUDIO_HW_STANDBY,
AUDIO_HW_SET_MASTER_VOLUME,
AUDIO_HW_GET_ROUTING,
AUDIO_HW_SET_ROUTING,
AUDIO_HW_GET_MODE,
AUDIO_HW_SET_MODE,
AUDIO_HW_GET_MIC_MUTE,
AUDIO_HW_SET_MIC_MUTE,
AUDIO_SET_VOICE_VOLUME,
AUDIO_SET_PARAMETER,
};
// record interface
virtual sp<IAudioRecord> openRecord(
pid_t pid,
audio_io_handle_t input,
uint32_t sampleRate,
audio_format_t format,
uint32_t channelMask,
int frameCount,
uint32_t flags,
int *sessionId,
status_t *status);
virtual status_t onTransact(
uint32_t code,
const Parcel& data,
Parcel* reply,
uint32_t flags);
audio_mode_t getMode() const { return mMode; }
bool btNrecIsOff() const { return mBtNrecIsOff; }
private:
AudioFlinger();
virtual ~AudioFlinger();
status_t initCheck() const;
virtual void onFirstRef();
audio_hw_device_t* findSuitableHwDev_l(uint32_t devices);
void purgeStaleEffects_l();
// Internal dump utilites.
status_t dumpPermissionDenial(int fd, const Vector<String16>& args);
status_t dumpClients(int fd, const Vector<String16>& args);
status_t dumpInternals(int fd, const Vector<String16>& args);
// --- Client ---
class Client : public RefBase {
public:
Client(const sp<AudioFlinger>& audioFlinger, pid_t pid);
virtual ~Client();
sp<MemoryDealer> heap() const;
pid_t pid() const { return mPid; }
sp<AudioFlinger> audioFlinger() const { return mAudioFlinger; }
private:
Client(const Client&);
Client& operator = (const Client&);
const sp<AudioFlinger> mAudioFlinger;
const sp<MemoryDealer> mMemoryDealer;
const pid_t mPid;
};
// --- Notification Client ---
class NotificationClient : public IBinder::DeathRecipient {
public:
NotificationClient(const sp<AudioFlinger>& audioFlinger,
const sp<IAudioFlingerClient>& client,
pid_t pid);
virtual ~NotificationClient();
sp<IAudioFlingerClient> audioFlingerClient() const { return mAudioFlingerClient; }
// IBinder::DeathRecipient
virtual void binderDied(const wp<IBinder>& who);
private:
NotificationClient(const NotificationClient&);
NotificationClient& operator = (const NotificationClient&);
const sp<AudioFlinger> mAudioFlinger;
const pid_t mPid;
const sp<IAudioFlingerClient> mAudioFlingerClient;
};
class TrackHandle;
class RecordHandle;
class RecordThread;
class PlaybackThread;
class MixerThread;
class DirectOutputThread;
class DuplicatingThread;
class Track;
class RecordTrack;
class EffectModule;
class EffectHandle;
class EffectChain;
struct AudioStreamOut;
struct AudioStreamIn;
class ThreadBase : public Thread {
public:
enum type_t {
MIXER, // Thread class is MixerThread
DIRECT, // Thread class is DirectOutputThread
DUPLICATING, // Thread class is DuplicatingThread
RECORD // Thread class is RecordThread
};
ThreadBase (const sp<AudioFlinger>& audioFlinger, audio_io_handle_t id, uint32_t device, type_t type);
virtual ~ThreadBase();
status_t dumpBase(int fd, const Vector<String16>& args);
status_t dumpEffectChains(int fd, const Vector<String16>& args);
void clearPowerManager();
// base for record and playback
class TrackBase : public AudioBufferProvider, public RefBase {
public:
enum track_state {
IDLE,
TERMINATED,
STOPPED,
RESUMING,
ACTIVE,
PAUSING,
PAUSED
};
enum track_flags {
STEPSERVER_FAILED = 0x01, // StepServer could not acquire cblk->lock mutex
SYSTEM_FLAGS_MASK = 0x0000ffffUL,
// The upper 16 bits are used for track-specific flags.
};
TrackBase(const wp<ThreadBase>& thread,
const sp<Client>& client,
uint32_t sampleRate,
audio_format_t format,
uint32_t channelMask,
int frameCount,
uint32_t flags,
const sp<IMemory>& sharedBuffer,
int sessionId);
virtual ~TrackBase();
virtual status_t start() = 0;
virtual void stop() = 0;
sp<IMemory> getCblk() const { return mCblkMemory; }
audio_track_cblk_t* cblk() const { return mCblk; }
int sessionId() const { return mSessionId; }
protected:
friend class ThreadBase;
friend class RecordHandle;
friend class PlaybackThread;
friend class RecordThread;
friend class MixerThread;
friend class DirectOutputThread;
TrackBase(const TrackBase&);
TrackBase& operator = (const TrackBase&);
virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer) = 0;
virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer);
audio_format_t format() const {
return mFormat;
}
int channelCount() const { return mChannelCount; }
uint32_t channelMask() const { return mChannelMask; }
int sampleRate() const; // FIXME inline after cblk sr moved
void* getBuffer(uint32_t offset, uint32_t frames) const;
bool isStopped() const {
return mState == STOPPED;
}
bool isTerminated() const {
return mState == TERMINATED;
}
bool step();
void reset();
const wp<ThreadBase> mThread;
/*const*/ sp<Client> mClient; // see explanation at ~TrackBase() why not const
sp<IMemory> mCblkMemory;
audio_track_cblk_t* mCblk;
void* mBuffer;
void* mBufferEnd;
uint32_t mFrameCount;
// we don't really need a lock for these
track_state mState;
const audio_format_t mFormat;
uint32_t mFlags;
const int mSessionId;
uint8_t mChannelCount;
uint32_t mChannelMask;
};
class ConfigEvent {
public:
ConfigEvent() : mEvent(0), mParam(0) {}
int mEvent;
int mParam;
};
class PMDeathRecipient : public IBinder::DeathRecipient {
public:
PMDeathRecipient(const wp<ThreadBase>& thread) : mThread(thread) {}
virtual ~PMDeathRecipient() {}
// IBinder::DeathRecipient
virtual void binderDied(const wp<IBinder>& who);
private:
PMDeathRecipient(const PMDeathRecipient&);
PMDeathRecipient& operator = (const PMDeathRecipient&);
wp<ThreadBase> mThread;
};
virtual status_t initCheck() const = 0;
type_t type() const { return mType; }
uint32_t sampleRate() const { return mSampleRate; }
int channelCount() const { return mChannelCount; }
audio_format_t format() const { return mFormat; }
size_t frameCount() const { return mFrameCount; }
void wakeUp() { mWaitWorkCV.broadcast(); }
// Should be "virtual status_t requestExitAndWait()" and override same
// method in Thread, but Thread::requestExitAndWait() is not yet virtual.
void exit();
virtual bool checkForNewParameters_l() = 0;
virtual status_t setParameters(const String8& keyValuePairs);
virtual String8 getParameters(const String8& keys) = 0;
virtual void audioConfigChanged_l(int event, int param = 0) = 0;
void sendConfigEvent(int event, int param = 0);
void sendConfigEvent_l(int event, int param = 0);
void processConfigEvents();
audio_io_handle_t id() const { return mId;}
bool standby() { return mStandby; }
uint32_t device() { return mDevice; }
virtual audio_stream_t* stream() = 0;
sp<EffectHandle> createEffect_l(
const sp<AudioFlinger::Client>& client,
const sp<IEffectClient>& effectClient,
int32_t priority,
int sessionId,
effect_descriptor_t *desc,
int *enabled,
status_t *status);
void disconnectEffect(const sp< EffectModule>& effect,
const wp<EffectHandle>& handle,
bool unpiniflast);
// return values for hasAudioSession (bit field)
enum effect_state {
EFFECT_SESSION = 0x1, // the audio session corresponds to at least one
// effect
TRACK_SESSION = 0x2 // the audio session corresponds to at least one
// track
};
// get effect chain corresponding to session Id.
sp<EffectChain> getEffectChain(int sessionId);
// same as getEffectChain() but must be called with ThreadBase mutex locked
sp<EffectChain> getEffectChain_l(int sessionId);
// add an effect chain to the chain list (mEffectChains)
virtual status_t addEffectChain_l(const sp<EffectChain>& chain) = 0;
// remove an effect chain from the chain list (mEffectChains)
virtual size_t removeEffectChain_l(const sp<EffectChain>& chain) = 0;
// lock mall effect chains Mutexes. Must be called before releasing the
// ThreadBase mutex before processing the mixer and effects. This guarantees the
// integrity of the chains during the process.
void lockEffectChains_l(Vector<sp <EffectChain> >& effectChains);
// unlock effect chains after process
void unlockEffectChains(Vector<sp <EffectChain> >& effectChains);
// set audio mode to all effect chains
void setMode(audio_mode_t mode);
// get effect module with corresponding ID on specified audio session
sp<AudioFlinger::EffectModule> getEffect_l(int sessionId, int effectId);
// add and effect module. Also creates the effect chain is none exists for
// the effects audio session
status_t addEffect_l(const sp< EffectModule>& effect);
// remove and effect module. Also removes the effect chain is this was the last
// effect
void removeEffect_l(const sp< EffectModule>& effect);
// detach all tracks connected to an auxiliary effect
virtual void detachAuxEffect_l(int effectId) {}
// returns either EFFECT_SESSION if effects on this audio session exist in one
// chain, or TRACK_SESSION if tracks on this audio session exist, or both
virtual uint32_t hasAudioSession(int sessionId) = 0;
// the value returned by default implementation is not important as the
// strategy is only meaningful for PlaybackThread which implements this method
virtual uint32_t getStrategyForSession_l(int sessionId) { return 0; }
// suspend or restore effect according to the type of effect passed. a NULL
// type pointer means suspend all effects in the session
void setEffectSuspended(const effect_uuid_t *type,
bool suspend,
int sessionId = AUDIO_SESSION_OUTPUT_MIX);
// check if some effects must be suspended/restored when an effect is enabled
// or disabled
void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect,
bool enabled,
int sessionId = AUDIO_SESSION_OUTPUT_MIX);
void checkSuspendOnEffectEnabled_l(const sp<EffectModule>& effect,
bool enabled,
int sessionId = AUDIO_SESSION_OUTPUT_MIX);
mutable Mutex mLock;
protected:
// entry describing an effect being suspended in mSuspendedSessions keyed vector
class SuspendedSessionDesc : public RefBase {
public:
SuspendedSessionDesc() : mRefCount(0) {}
int mRefCount; // number of active suspend requests
effect_uuid_t mType; // effect type UUID
};
void acquireWakeLock();
void acquireWakeLock_l();
void releaseWakeLock();
void releaseWakeLock_l();
void setEffectSuspended_l(const effect_uuid_t *type,
bool suspend,
int sessionId = AUDIO_SESSION_OUTPUT_MIX);
// updated mSuspendedSessions when an effect suspended or restored
void updateSuspendedSessions_l(const effect_uuid_t *type,
bool suspend,
int sessionId);
// check if some effects must be suspended when an effect chain is added
void checkSuspendOnAddEffectChain_l(const sp<EffectChain>& chain);
friend class AudioFlinger;
friend class Track;
friend class TrackBase;
friend class PlaybackThread;
friend class MixerThread;
friend class DirectOutputThread;
friend class DuplicatingThread;
friend class RecordThread;
friend class RecordTrack;
const type_t mType;
Condition mWaitWorkCV;
const sp<AudioFlinger> mAudioFlinger;
uint32_t mSampleRate;
size_t mFrameCount;
uint32_t mChannelMask;
uint16_t mChannelCount;
size_t mFrameSize;
audio_format_t mFormat;
Condition mParamCond;
Vector<String8> mNewParameters;
status_t mParamStatus;
Vector<ConfigEvent> mConfigEvents;
bool mStandby;
const audio_io_handle_t mId;
Vector< sp<EffectChain> > mEffectChains;
uint32_t mDevice; // output device for PlaybackThread
// input + output devices for RecordThread
static const int kNameLength = 32;
char mName[kNameLength];
sp<IPowerManager> mPowerManager;
sp<IBinder> mWakeLockToken;
const sp<PMDeathRecipient> mDeathRecipient;
// list of suspended effects per session and per type. The first vector is
// keyed by session ID, the second by type UUID timeLow field
KeyedVector< int, KeyedVector< int, sp<SuspendedSessionDesc> > > mSuspendedSessions;
};
// --- PlaybackThread ---
class PlaybackThread : public ThreadBase {
public:
enum mixer_state {
MIXER_IDLE,
MIXER_TRACKS_ENABLED,
MIXER_TRACKS_READY
};
// playback track
class Track : public TrackBase {
public:
Track( const wp<ThreadBase>& thread,
const sp<Client>& client,
audio_stream_type_t streamType,
uint32_t sampleRate,
audio_format_t format,
uint32_t channelMask,
int frameCount,
const sp<IMemory>& sharedBuffer,
int sessionId);
virtual ~Track();
void dump(char* buffer, size_t size);
virtual status_t start();
virtual void stop();
void pause();
void flush();
void destroy();
void mute(bool);
int name() const {
return mName;
}
audio_stream_type_t type() const {
return mStreamType;
}
status_t attachAuxEffect(int EffectId);
void setAuxBuffer(int EffectId, int32_t *buffer);
int32_t *auxBuffer() const { return mAuxBuffer; }
void setMainBuffer(int16_t *buffer) { mMainBuffer = buffer; }
int16_t *mainBuffer() const { return mMainBuffer; }
int auxEffectId() const { return mAuxEffectId; }
protected:
friend class ThreadBase;
friend class TrackHandle;
friend class PlaybackThread;
friend class MixerThread;
friend class DirectOutputThread;
Track(const Track&);
Track& operator = (const Track&);
virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
bool isMuted() const { return mMute; }
bool isPausing() const {
return mState == PAUSING;
}
bool isPaused() const {
return mState == PAUSED;
}
bool isReady() const;
void setPaused() { mState = PAUSED; }
void reset();
bool isOutputTrack() const {
return (mStreamType == AUDIO_STREAM_CNT);
}
// we don't really need a lock for these
volatile bool mMute;
// FILLED state is used for suppressing volume ramp at begin of playing
enum {FS_FILLING, FS_FILLED, FS_ACTIVE};
mutable uint8_t mFillingUpStatus;
int8_t mRetryCount;
sp<IMemory> mSharedBuffer;
bool mResetDone;
audio_stream_type_t mStreamType;
int mName;
int16_t *mMainBuffer;
int32_t *mAuxBuffer;
int mAuxEffectId;
bool mHasVolumeController;
}; // end of Track
// playback track
class OutputTrack : public Track {
public:
class Buffer: public AudioBufferProvider::Buffer {
public:
int16_t *mBuffer;
};
OutputTrack( const wp<ThreadBase>& thread,
DuplicatingThread *sourceThread,
uint32_t sampleRate,
audio_format_t format,
uint32_t channelMask,
int frameCount);
virtual ~OutputTrack();
virtual status_t start();
virtual void stop();
bool write(int16_t* data, uint32_t frames);
bool bufferQueueEmpty() const { return (mBufferQueue.size() == 0) ? true : false; }
bool isActive() const { return mActive; }
const wp<ThreadBase>& thread() const { return mThread; }
private:
enum {
NO_MORE_BUFFERS = 0x80000001, // same in AudioTrack.h, ok to be different value
};
status_t obtainBuffer(AudioBufferProvider::Buffer* buffer, uint32_t waitTimeMs);
void clearBufferQueue();
// Maximum number of pending buffers allocated by OutputTrack::write()
static const uint8_t kMaxOverFlowBuffers = 10;
Vector < Buffer* > mBufferQueue;
AudioBufferProvider::Buffer mOutBuffer;
bool mActive;
DuplicatingThread* const mSourceThread; // for waitTimeMs() in write()
}; // end of OutputTrack
PlaybackThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output,
audio_io_handle_t id, uint32_t device, type_t type);
virtual ~PlaybackThread();
virtual status_t dump(int fd, const Vector<String16>& args);
// Thread virtuals
virtual status_t readyToRun();
virtual void onFirstRef();
virtual status_t initCheck() const { return (mOutput == NULL) ? NO_INIT : NO_ERROR; }
virtual uint32_t latency() const;
virtual status_t setMasterVolume(float value);
virtual status_t setMasterMute(bool muted);
virtual float masterVolume() const { return mMasterVolume; }
virtual bool masterMute() const { return mMasterMute; }
virtual status_t setStreamVolume(audio_stream_type_t stream, float value);
virtual status_t setStreamMute(audio_stream_type_t stream, bool muted);
virtual float streamVolume(audio_stream_type_t stream) const;
virtual bool streamMute(audio_stream_type_t stream) const;
sp<Track> createTrack_l(
const sp<AudioFlinger::Client>& client,
audio_stream_type_t streamType,
uint32_t sampleRate,
audio_format_t format,
uint32_t channelMask,
int frameCount,
const sp<IMemory>& sharedBuffer,
int sessionId,
status_t *status);
AudioStreamOut* getOutput() const;
AudioStreamOut* clearOutput();
virtual audio_stream_t* stream();
void suspend() { mSuspended++; }
void restore() { if (mSuspended) mSuspended--; }
bool isSuspended() const { return (mSuspended != 0); }
virtual String8 getParameters(const String8& keys);
virtual void audioConfigChanged_l(int event, int param = 0);
virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames);
int16_t *mixBuffer() const { return mMixBuffer; };
virtual void detachAuxEffect_l(int effectId);
status_t attachAuxEffect(const sp<AudioFlinger::PlaybackThread::Track> track,
int EffectId);
status_t attachAuxEffect_l(const sp<AudioFlinger::PlaybackThread::Track> track,
int EffectId);
virtual status_t addEffectChain_l(const sp<EffectChain>& chain);
virtual size_t removeEffectChain_l(const sp<EffectChain>& chain);
virtual uint32_t hasAudioSession(int sessionId);
virtual uint32_t getStrategyForSession_l(int sessionId);
void setStreamValid(audio_stream_type_t streamType, bool valid);
struct stream_type_t {
stream_type_t()
: volume(1.0f),
mute(false),
valid(true)
{
}
float volume;
bool mute;
bool valid;
};
protected:
int16_t* mMixBuffer;
int mSuspended;
int mBytesWritten;
private:
bool mMasterMute;
protected:
SortedVector< wp<Track> > mActiveTracks;
virtual int getTrackName_l() = 0;
virtual void deleteTrackName_l(int name) = 0;
virtual uint32_t activeSleepTimeUs();
virtual uint32_t idleSleepTimeUs() = 0;
virtual uint32_t suspendSleepTimeUs() = 0;
private:
friend class AudioFlinger;
friend class OutputTrack;
friend class Track;
friend class TrackBase;
friend class MixerThread;
friend class DirectOutputThread;
friend class DuplicatingThread;
PlaybackThread(const Client&);
PlaybackThread& operator = (const PlaybackThread&);
status_t addTrack_l(const sp<Track>& track);
void destroyTrack_l(const sp<Track>& track);
void removeTrack_l(const sp<Track>& track);
void readOutputParameters();
virtual status_t dumpInternals(int fd, const Vector<String16>& args);
status_t dumpTracks(int fd, const Vector<String16>& args);
SortedVector< sp<Track> > mTracks;
// mStreamTypes[] uses 1 additional stream type internally for the OutputTrack used by DuplicatingThread
stream_type_t mStreamTypes[AUDIO_STREAM_CNT + 1];
AudioStreamOut *mOutput;
float mMasterVolume;
nsecs_t mLastWriteTime;
int mNumWrites;
int mNumDelayedWrites;
bool mInWrite;
};
class MixerThread : public PlaybackThread {
public:
MixerThread (const sp<AudioFlinger>& audioFlinger,
AudioStreamOut* output,
audio_io_handle_t id,
uint32_t device,
type_t type = MIXER);
virtual ~MixerThread();
// Thread virtuals
virtual bool threadLoop();
void invalidateTracks(audio_stream_type_t streamType);
virtual bool checkForNewParameters_l();
virtual status_t dumpInternals(int fd, const Vector<String16>& args);
protected:
mixer_state prepareTracks_l(const SortedVector< wp<Track> >& activeTracks,
Vector< sp<Track> > *tracksToRemove);
virtual int getTrackName_l();
virtual void deleteTrackName_l(int name);
virtual uint32_t idleSleepTimeUs();
virtual uint32_t suspendSleepTimeUs();
AudioMixer* mAudioMixer;
mixer_state mPrevMixerStatus; // previous status returned by prepareTracks_l()
};
class DirectOutputThread : public PlaybackThread {
public:
DirectOutputThread (const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output,
audio_io_handle_t id, uint32_t device);
virtual ~DirectOutputThread();
// Thread virtuals
virtual bool threadLoop();
virtual bool checkForNewParameters_l();
protected:
virtual int getTrackName_l();
virtual void deleteTrackName_l(int name);
virtual uint32_t activeSleepTimeUs();
virtual uint32_t idleSleepTimeUs();
virtual uint32_t suspendSleepTimeUs();
private:
void applyVolume(uint16_t leftVol, uint16_t rightVol, bool ramp);
float mLeftVolFloat;
float mRightVolFloat;
uint16_t mLeftVolShort;
uint16_t mRightVolShort;
};
class DuplicatingThread : public MixerThread {
public:
DuplicatingThread (const sp<AudioFlinger>& audioFlinger, MixerThread* mainThread,
audio_io_handle_t id);
virtual ~DuplicatingThread();
// Thread virtuals
virtual bool threadLoop();
void addOutputTrack(MixerThread* thread);
void removeOutputTrack(MixerThread* thread);
uint32_t waitTimeMs() { return mWaitTimeMs; }
protected:
virtual uint32_t activeSleepTimeUs();
private:
bool outputsReady(SortedVector< sp<OutputTrack> > &outputTracks);
void updateWaitTime();
SortedVector < sp<OutputTrack> > mOutputTracks;
uint32_t mWaitTimeMs;
};
PlaybackThread *checkPlaybackThread_l(audio_io_handle_t output) const;
MixerThread *checkMixerThread_l(audio_io_handle_t output) const;
RecordThread *checkRecordThread_l(audio_io_handle_t input) const;
float streamVolumeInternal(audio_stream_type_t stream) const
{ return mStreamTypes[stream].volume; }
void audioConfigChanged_l(int event, audio_io_handle_t ioHandle, void *param2);
// allocate an audio_io_handle_t, session ID, or effect ID
uint32_t nextUniqueId();
status_t moveEffectChain_l(int sessionId,
AudioFlinger::PlaybackThread *srcThread,
AudioFlinger::PlaybackThread *dstThread,
bool reRegister);
PlaybackThread *primaryPlaybackThread_l();
uint32_t primaryOutputDevice_l();
friend class AudioBuffer;
class TrackHandle : public android::BnAudioTrack {
public:
TrackHandle(const sp<PlaybackThread::Track>& track);
virtual ~TrackHandle();
virtual sp<IMemory> getCblk() const;
virtual status_t start();
virtual void stop();
virtual void flush();
virtual void mute(bool);
virtual void pause();
virtual status_t attachAuxEffect(int effectId);
virtual status_t onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
private:
const sp<PlaybackThread::Track> mTrack;
};
friend class Client;
friend class PlaybackThread::Track;
void removeClient_l(pid_t pid);
void removeNotificationClient(pid_t pid);
// record thread
class RecordThread : public ThreadBase, public AudioBufferProvider
{
public:
// record track
class RecordTrack : public TrackBase {
public:
RecordTrack(const wp<ThreadBase>& thread,
const sp<Client>& client,
uint32_t sampleRate,
audio_format_t format,
uint32_t channelMask,
int frameCount,
uint32_t flags,
int sessionId);
virtual ~RecordTrack();
virtual status_t start();
virtual void stop();
bool overflow() { bool tmp = mOverflow; mOverflow = false; return tmp; }
bool setOverflow() { bool tmp = mOverflow; mOverflow = true; return tmp; }
void dump(char* buffer, size_t size);
private:
friend class AudioFlinger;
friend class RecordThread;
RecordTrack(const RecordTrack&);
RecordTrack& operator = (const RecordTrack&);
virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
bool mOverflow;
};
RecordThread(const sp<AudioFlinger>& audioFlinger,
AudioStreamIn *input,
uint32_t sampleRate,
uint32_t channels,
audio_io_handle_t id,
uint32_t device);
virtual ~RecordThread();
virtual bool threadLoop();
virtual status_t readyToRun();
virtual void onFirstRef();
virtual status_t initCheck() const { return (mInput == NULL) ? NO_INIT : NO_ERROR; }
sp<AudioFlinger::RecordThread::RecordTrack> createRecordTrack_l(
const sp<AudioFlinger::Client>& client,
uint32_t sampleRate,
audio_format_t format,
int channelMask,
int frameCount,
uint32_t flags,
int sessionId,
status_t *status);
status_t start(RecordTrack* recordTrack);
void stop(RecordTrack* recordTrack);
status_t dump(int fd, const Vector<String16>& args);
AudioStreamIn* getInput() const;
AudioStreamIn* clearInput();
virtual audio_stream_t* stream();
virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer);
virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer);
virtual bool checkForNewParameters_l();
virtual String8 getParameters(const String8& keys);
virtual void audioConfigChanged_l(int event, int param = 0);
void readInputParameters();
virtual unsigned int getInputFramesLost();
virtual status_t addEffectChain_l(const sp<EffectChain>& chain);
virtual size_t removeEffectChain_l(const sp<EffectChain>& chain);
virtual uint32_t hasAudioSession(int sessionId);
RecordTrack* track();
private:
RecordThread();
AudioStreamIn *mInput;
RecordTrack* mTrack;
sp<RecordTrack> mActiveTrack;
Condition mStartStopCond;
AudioResampler *mResampler;
int32_t *mRsmpOutBuffer;
int16_t *mRsmpInBuffer;
size_t mRsmpInIndex;
size_t mInputBytes;
const int mReqChannelCount;
const uint32_t mReqSampleRate;
ssize_t mBytesRead;
};
class RecordHandle : public android::BnAudioRecord {
public:
RecordHandle(const sp<RecordThread::RecordTrack>& recordTrack);
virtual ~RecordHandle();
virtual sp<IMemory> getCblk() const;
virtual status_t start();
virtual void stop();
virtual status_t onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
private:
const sp<RecordThread::RecordTrack> mRecordTrack;
};
//--- Audio Effect Management
// EffectModule and EffectChain classes both have their own mutex to protect
// state changes or resource modifications. Always respect the following order
// if multiple mutexes must be acquired to avoid cross deadlock:
// AudioFlinger -> ThreadBase -> EffectChain -> EffectModule
// The EffectModule class is a wrapper object controlling the effect engine implementation
// in the effect library. It prevents concurrent calls to process() and command() functions
// from different client threads. It keeps a list of EffectHandle objects corresponding
// to all client applications using this effect and notifies applications of effect state,
// control or parameter changes. It manages the activation state machine to send appropriate
// reset, enable, disable commands to effect engine and provide volume
// ramping when effects are activated/deactivated.
// When controlling an auxiliary effect, the EffectModule also provides an input buffer used by
// the attached track(s) to accumulate their auxiliary channel.
class EffectModule: public RefBase {
public:
EffectModule(const wp<ThreadBase>& wThread,
const wp<AudioFlinger::EffectChain>& chain,
effect_descriptor_t *desc,
int id,
int sessionId);
virtual ~EffectModule();
enum effect_state {
IDLE,
RESTART,
STARTING,
ACTIVE,
STOPPING,
STOPPED,
DESTROYED
};
int id() const { return mId; }
void process();
void updateState();
status_t command(uint32_t cmdCode,
uint32_t cmdSize,
void *pCmdData,
uint32_t *replySize,
void *pReplyData);
void reset_l();
status_t configure();
status_t init();
effect_state state() const {
return mState;
}
uint32_t status() {
return mStatus;
}
int sessionId() const {
return mSessionId;
}
status_t setEnabled(bool enabled);
bool isEnabled() const;
bool isProcessEnabled() const;
void setInBuffer(int16_t *buffer) { mConfig.inputCfg.buffer.s16 = buffer; }
int16_t *inBuffer() { return mConfig.inputCfg.buffer.s16; }
void setOutBuffer(int16_t *buffer) { mConfig.outputCfg.buffer.s16 = buffer; }
int16_t *outBuffer() { return mConfig.outputCfg.buffer.s16; }
void setChain(const wp<EffectChain>& chain) { mChain = chain; }
void setThread(const wp<ThreadBase>& thread) { mThread = thread; }
const wp<ThreadBase>& thread() { return mThread; }
status_t addHandle(const sp<EffectHandle>& handle);
void disconnect(const wp<EffectHandle>& handle, bool unpiniflast);
size_t removeHandle (const wp<EffectHandle>& handle);
effect_descriptor_t& desc() { return mDescriptor; }
wp<EffectChain>& chain() { return mChain; }
status_t setDevice(uint32_t device);
status_t setVolume(uint32_t *left, uint32_t *right, bool controller);
status_t setMode(audio_mode_t mode);
status_t start();
status_t stop();
void setSuspended(bool suspended);
bool suspended() const;
sp<EffectHandle> controlHandle();
bool isPinned() const { return mPinned; }
void unPin() { mPinned = false; }
status_t dump(int fd, const Vector<String16>& args);
protected:
friend class EffectHandle;
friend class AudioFlinger;
bool mPinned;
// Maximum time allocated to effect engines to complete the turn off sequence
static const uint32_t MAX_DISABLE_TIME_MS = 10000;
EffectModule(const EffectModule&);
EffectModule& operator = (const EffectModule&);
status_t start_l();
status_t stop_l();
mutable Mutex mLock; // mutex for process, commands and handles list protection
wp<ThreadBase> mThread; // parent thread
wp<EffectChain> mChain; // parent effect chain
int mId; // this instance unique ID
int mSessionId; // audio session ID
effect_descriptor_t mDescriptor;// effect descriptor received from effect engine
effect_config_t mConfig; // input and output audio configuration
effect_handle_t mEffectInterface; // Effect module C API
status_t mStatus; // initialization status
effect_state mState; // current activation state
Vector< wp<EffectHandle> > mHandles; // list of client handles
uint32_t mMaxDisableWaitCnt; // maximum grace period before forcing an effect off after
// sending disable command.
uint32_t mDisableWaitCnt; // current process() calls count during disable period.
bool mSuspended; // effect is suspended: temporarily disabled by framework
};
// The EffectHandle class implements the IEffect interface. It provides resources
// to receive parameter updates, keeps track of effect control
// ownership and state and has a pointer to the EffectModule object it is controlling.
// There is one EffectHandle object for each application controlling (or using)
// an effect module.
// The EffectHandle is obtained by calling AudioFlinger::createEffect().
class EffectHandle: public android::BnEffect {
public:
EffectHandle(const sp<EffectModule>& effect,
const sp<AudioFlinger::Client>& client,
const sp<IEffectClient>& effectClient,
int32_t priority);
virtual ~EffectHandle();
// IEffect
virtual status_t enable();
virtual status_t disable();
virtual status_t command(uint32_t cmdCode,
uint32_t cmdSize,
void *pCmdData,
uint32_t *replySize,
void *pReplyData);
virtual void disconnect();
virtual void disconnect(bool unpiniflast);
virtual sp<IMemory> getCblk() const { return mCblkMemory; }
virtual status_t onTransact(uint32_t code, const Parcel& data,
Parcel* reply, uint32_t flags);
// Give or take control of effect module
// - hasControl: true if control is given, false if removed
// - signal: true client app should be signaled of change, false otherwise
// - enabled: state of the effect when control is passed
void setControl(bool hasControl, bool signal, bool enabled);
void commandExecuted(uint32_t cmdCode,
uint32_t cmdSize,
void *pCmdData,
uint32_t replySize,
void *pReplyData);
void setEnabled(bool enabled);
bool enabled() const { return mEnabled; }
// Getters
int id() const { return mEffect->id(); }
int priority() const { return mPriority; }
bool hasControl() const { return mHasControl; }
sp<EffectModule> effect() const { return mEffect; }
void dump(char* buffer, size_t size);
protected:
friend class AudioFlinger;
friend class EffectModule;
EffectHandle(const EffectHandle&);
EffectHandle& operator =(const EffectHandle&);
sp<EffectModule> mEffect; // pointer to controlled EffectModule
sp<IEffectClient> mEffectClient; // callback interface for client notifications
/*const*/ sp<Client> mClient; // client for shared memory allocation, see disconnect()
sp<IMemory> mCblkMemory; // shared memory for control block
effect_param_cblk_t* mCblk; // control block for deferred parameter setting via shared memory
uint8_t* mBuffer; // pointer to parameter area in shared memory
int mPriority; // client application priority to control the effect
bool mHasControl; // true if this handle is controlling the effect
bool mEnabled; // cached enable state: needed when the effect is
// restored after being suspended
};
// the EffectChain class represents a group of effects associated to one audio session.
// There can be any number of EffectChain objects per output mixer thread (PlaybackThread).
// The EffecChain with session ID 0 contains global effects applied to the output mix.
// Effects in this chain can be insert or auxiliary. Effects in other chains (attached to tracks)
// are insert only. The EffectChain maintains an ordered list of effect module, the order corresponding
// in the effect process order. When attached to a track (session ID != 0), it also provide it's own
// input buffer used by the track as accumulation buffer.
class EffectChain: public RefBase {
public:
EffectChain(const wp<ThreadBase>& wThread, int sessionId);
virtual ~EffectChain();
// special key used for an entry in mSuspendedEffects keyed vector
// corresponding to a suspend all request.
static const int kKeyForSuspendAll = 0;
// minimum duration during which we force calling effect process when last track on
// a session is stopped or removed to allow effect tail to be rendered
static const int kProcessTailDurationMs = 1000;
void process_l();
void lock() {
mLock.lock();
}
void unlock() {
mLock.unlock();
}
status_t addEffect_l(const sp<EffectModule>& handle);
size_t removeEffect_l(const sp<EffectModule>& handle);
int sessionId() const { return mSessionId; }
void setSessionId(int sessionId) { mSessionId = sessionId; }
sp<EffectModule> getEffectFromDesc_l(effect_descriptor_t *descriptor);
sp<EffectModule> getEffectFromId_l(int id);
sp<EffectModule> getEffectFromType_l(const effect_uuid_t *type);
bool setVolume_l(uint32_t *left, uint32_t *right);
void setDevice_l(uint32_t device);
void setMode_l(audio_mode_t mode);
void setInBuffer(int16_t *buffer, bool ownsBuffer = false) {
mInBuffer = buffer;
mOwnInBuffer = ownsBuffer;
}
int16_t *inBuffer() const {
return mInBuffer;
}
void setOutBuffer(int16_t *buffer) {
mOutBuffer = buffer;
}
int16_t *outBuffer() const {
return mOutBuffer;
}
void incTrackCnt() { android_atomic_inc(&mTrackCnt); }
void decTrackCnt() { android_atomic_dec(&mTrackCnt); }
int32_t trackCnt() const { return mTrackCnt;}
void incActiveTrackCnt() { android_atomic_inc(&mActiveTrackCnt);
mTailBufferCount = mMaxTailBuffers; }
void decActiveTrackCnt() { android_atomic_dec(&mActiveTrackCnt); }
int32_t activeTrackCnt() const { return mActiveTrackCnt;}
uint32_t strategy() const { return mStrategy; }
void setStrategy(uint32_t strategy)
{ mStrategy = strategy; }
// suspend effect of the given type
void setEffectSuspended_l(const effect_uuid_t *type,
bool suspend);
// suspend all eligible effects
void setEffectSuspendedAll_l(bool suspend);
// check if effects should be suspend or restored when a given effect is enable or disabled
void checkSuspendOnEffectEnabled(const sp<EffectModule>& effect,
bool enabled);
status_t dump(int fd, const Vector<String16>& args);
protected:
friend class AudioFlinger;
EffectChain(const EffectChain&);
EffectChain& operator =(const EffectChain&);
class SuspendedEffectDesc : public RefBase {
public:
SuspendedEffectDesc() : mRefCount(0) {}
int mRefCount;
effect_uuid_t mType;
wp<EffectModule> mEffect;
};
// get a list of effect modules to suspend when an effect of the type
// passed is enabled.
void getSuspendEligibleEffects(Vector< sp<EffectModule> > &effects);
// get an effect module if it is currently enable
sp<EffectModule> getEffectIfEnabled(const effect_uuid_t *type);
// true if the effect whose descriptor is passed can be suspended
// OEMs can modify the rules implemented in this method to exclude specific effect
// types or implementations from the suspend/restore mechanism.
bool isEffectEligibleForSuspend(const effect_descriptor_t& desc);
wp<ThreadBase> mThread; // parent mixer thread
Mutex mLock; // mutex protecting effect list
Vector<sp<EffectModule> > mEffects; // list of effect modules
int mSessionId; // audio session ID
int16_t *mInBuffer; // chain input buffer
int16_t *mOutBuffer; // chain output buffer
volatile int32_t mActiveTrackCnt; // number of active tracks connected
volatile int32_t mTrackCnt; // number of tracks connected
int32_t mTailBufferCount; // current effect tail buffer count
int32_t mMaxTailBuffers; // maximum effect tail buffers
bool mOwnInBuffer; // true if the chain owns its input buffer
int mVolumeCtrlIdx; // index of insert effect having control over volume
uint32_t mLeftVolume; // previous volume on left channel
uint32_t mRightVolume; // previous volume on right channel
uint32_t mNewLeftVolume; // new volume on left channel
uint32_t mNewRightVolume; // new volume on right channel
uint32_t mStrategy; // strategy for this effect chain
// mSuspendedEffects lists all effect currently suspended in the chain
// use effect type UUID timelow field as key. There is no real risk of identical
// timeLow fields among effect type UUIDs.
KeyedVector< int, sp<SuspendedEffectDesc> > mSuspendedEffects;
};
// AudioStreamOut and AudioStreamIn are immutable, so their fields are const.
// For emphasis, we could also make all pointers to them be "const *",
// but that would clutter the code unnecessarily.
struct AudioStreamOut {
audio_hw_device_t* const hwDev;
audio_stream_out_t* const stream;
AudioStreamOut(audio_hw_device_t *dev, audio_stream_out_t *out) :
hwDev(dev), stream(out) {}
};
struct AudioStreamIn {
audio_hw_device_t* const hwDev;
audio_stream_in_t* const stream;
AudioStreamIn(audio_hw_device_t *dev, audio_stream_in_t *in) :
hwDev(dev), stream(in) {}
};
struct AudioSessionRef {
// FIXME rename parameter names when fields get "m" prefix
AudioSessionRef(int sessionid_, pid_t pid_) :
sessionid(sessionid_), pid(pid_), cnt(1) {}
const int sessionid;
const pid_t pid;
int cnt;
};
friend class RecordThread;
friend class PlaybackThread;
mutable Mutex mLock;
DefaultKeyedVector< pid_t, wp<Client> > mClients; // see ~Client()
mutable Mutex mHardwareLock;
audio_hw_device_t* mPrimaryHardwareDev;
Vector<audio_hw_device_t*> mAudioHwDevs;
mutable hardware_call_state mHardwareStatus; // for dump only
DefaultKeyedVector< audio_io_handle_t, sp<PlaybackThread> > mPlaybackThreads;
PlaybackThread::stream_type_t mStreamTypes[AUDIO_STREAM_CNT];
// both are protected by mLock
float mMasterVolume;
bool mMasterMute;
DefaultKeyedVector< audio_io_handle_t, sp<RecordThread> > mRecordThreads;
DefaultKeyedVector< pid_t, sp<NotificationClient> > mNotificationClients;
volatile int32_t mNextUniqueId;
audio_mode_t mMode;
bool mBtNrecIsOff;
Vector<AudioSessionRef*> mAudioSessionRefs;
float masterVolume_l() const { return mMasterVolume; }
bool masterMute_l() const { return mMasterMute; }
private:
sp<Client> registerPid_l(pid_t pid); // always returns non-0
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_AUDIO_FLINGER_H
|