AudioPolicyService.cpp revision 7f5d179babc1dbd4a9859da92fa43a89f14ce853 
1/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "AudioPolicyService"
18//#define LOG_NDEBUG 0
19
20#include "Configuration.h"
21#undef __STRICT_ANSI__
22#define __STDINT_LIMITS
23#define __STDC_LIMIT_MACROS
24#include <stdint.h>
25
26#include <sys/time.h>
27#include <binder/IServiceManager.h>
28#include <utils/Log.h>
29#include <cutils/properties.h>
30#include <binder/IPCThreadState.h>
31#include <utils/String16.h>
32#include <utils/threads.h>
33#include "AudioPolicyService.h"
34#include "ServiceUtilities.h"
35#include <hardware_legacy/power.h>
36#include <media/AudioEffect.h>
37#include <media/EffectsFactoryApi.h>
38#include <media/AudioParameter.h>
39
40#include <hardware/hardware.h>
41#include <system/audio.h>
42#include <system/audio_policy.h>
43#include <hardware/audio_policy.h>
44
45namespace android {
46
47static const char kDeadlockedString[] = "AudioPolicyService may be deadlocked\n";
48static const char kCmdDeadlockedString[] = "AudioPolicyService command thread may be deadlocked\n";
49
50static const int kDumpLockRetries = 50;
51static const int kDumpLockSleepUs = 20000;
52
53static const nsecs_t kAudioCommandTimeoutNs = seconds(3); // 3 seconds
54
55namespace {
56    extern struct audio_policy_service_ops aps_ops;
57};
58
59// ----------------------------------------------------------------------------
60
61AudioPolicyService::AudioPolicyService()
62    : BnAudioPolicyService(), mpAudioPolicyDev(NULL), mpAudioPolicy(NULL),
63      mAudioPolicyManager(NULL), mAudioPolicyClient(NULL), mPhoneState(AUDIO_MODE_INVALID)
64{
65}
66
67void AudioPolicyService::onFirstRef()
68{
69    char value[PROPERTY_VALUE_MAX];
70    const struct hw_module_t *module;
71    int forced_val;
72    int rc;
73
74    {
75        Mutex::Autolock _l(mLock);
76
77        // start tone playback thread
78        mTonePlaybackThread = new AudioCommandThread(String8("ApmTone"), this);
79        // start audio commands thread
80        mAudioCommandThread = new AudioCommandThread(String8("ApmAudio"), this);
81        // start output activity command thread
82        mOutputCommandThread = new AudioCommandThread(String8("ApmOutput"), this);
83
84#ifdef USE_LEGACY_AUDIO_POLICY
85        ALOGI("AudioPolicyService CSTOR in legacy mode");
86
87        /* instantiate the audio policy manager */
88        rc = hw_get_module(AUDIO_POLICY_HARDWARE_MODULE_ID, &module);
89        if (rc) {
90            return;
91        }
92        rc = audio_policy_dev_open(module, &mpAudioPolicyDev);
93        ALOGE_IF(rc, "couldn't open audio policy device (%s)", strerror(-rc));
94        if (rc) {
95            return;
96        }
97
98        rc = mpAudioPolicyDev->create_audio_policy(mpAudioPolicyDev, &aps_ops, this,
99                                                   &mpAudioPolicy);
100        ALOGE_IF(rc, "couldn't create audio policy (%s)", strerror(-rc));
101        if (rc) {
102            return;
103        }
104
105        rc = mpAudioPolicy->init_check(mpAudioPolicy);
106        ALOGE_IF(rc, "couldn't init_check the audio policy (%s)", strerror(-rc));
107        if (rc) {
108            return;
109        }
110        ALOGI("Loaded audio policy from %s (%s)", module->name, module->id);
111#else
112        ALOGI("AudioPolicyService CSTOR in new mode");
113
114        mAudioPolicyClient = new AudioPolicyClient(this);
115        mAudioPolicyManager = createAudioPolicyManager(mAudioPolicyClient);
116#endif
117    }
118    // load audio processing modules
119    sp<AudioPolicyEffects>audioPolicyEffects = new AudioPolicyEffects();
120    {
121        Mutex::Autolock _l(mLock);
122        mAudioPolicyEffects = audioPolicyEffects;
123    }
124}
125
126AudioPolicyService::~AudioPolicyService()
127{
128    mTonePlaybackThread->exit();
129    mAudioCommandThread->exit();
130    mOutputCommandThread->exit();
131
132#ifdef USE_LEGACY_AUDIO_POLICY
133    if (mpAudioPolicy != NULL && mpAudioPolicyDev != NULL) {
134        mpAudioPolicyDev->destroy_audio_policy(mpAudioPolicyDev, mpAudioPolicy);
135    }
136    if (mpAudioPolicyDev != NULL) {
137        audio_policy_dev_close(mpAudioPolicyDev);
138    }
139#else
140    destroyAudioPolicyManager(mAudioPolicyManager);
141    delete mAudioPolicyClient;
142#endif
143
144    mNotificationClients.clear();
145    mAudioPolicyEffects.clear();
146}
147
148// A notification client is always registered by AudioSystem when the client process
149// connects to AudioPolicyService.
150void AudioPolicyService::registerClient(const sp<IAudioPolicyServiceClient>& client)
151{
152    if (client == 0) {
153        ALOGW("%s got NULL client", __FUNCTION__);
154        return;
155    }
156    Mutex::Autolock _l(mNotificationClientsLock);
157
158    uid_t uid = IPCThreadState::self()->getCallingUid();
159    if (mNotificationClients.indexOfKey(uid) < 0) {
160        sp<NotificationClient> notificationClient = new NotificationClient(this,
161                                                                           client,
162                                                                           uid);
163        ALOGV("registerClient() client %p, uid %d", client.get(), uid);
164
165        mNotificationClients.add(uid, notificationClient);
166
167        sp<IBinder> binder = IInterface::asBinder(client);
168        binder->linkToDeath(notificationClient);
169    }
170}
171
172void AudioPolicyService::setAudioPortCallbacksEnabled(bool enabled)
173{
174    Mutex::Autolock _l(mNotificationClientsLock);
175
176    uid_t uid = IPCThreadState::self()->getCallingUid();
177    if (mNotificationClients.indexOfKey(uid) < 0) {
178        return;
179    }
180    mNotificationClients.valueFor(uid)->setAudioPortCallbacksEnabled(enabled);
181}
182
183// removeNotificationClient() is called when the client process dies.
184void AudioPolicyService::removeNotificationClient(uid_t uid)
185{
186    {
187        Mutex::Autolock _l(mNotificationClientsLock);
188        mNotificationClients.removeItem(uid);
189    }
190#ifndef USE_LEGACY_AUDIO_POLICY
191    {
192        Mutex::Autolock _l(mLock);
193        if (mAudioPolicyManager) {
194            mAudioPolicyManager->releaseResourcesForUid(uid);
195        }
196    }
197#endif
198}
199
200void AudioPolicyService::onAudioPortListUpdate()
201{
202    mOutputCommandThread->updateAudioPortListCommand();
203}
204
205void AudioPolicyService::doOnAudioPortListUpdate()
206{
207    Mutex::Autolock _l(mNotificationClientsLock);
208    for (size_t i = 0; i < mNotificationClients.size(); i++) {
209        mNotificationClients.valueAt(i)->onAudioPortListUpdate();
210    }
211}
212
213void AudioPolicyService::onAudioPatchListUpdate()
214{
215    mOutputCommandThread->updateAudioPatchListCommand();
216}
217
218status_t AudioPolicyService::clientCreateAudioPatch(const struct audio_patch *patch,
219                                                audio_patch_handle_t *handle,
220                                                int delayMs)
221{
222    return mAudioCommandThread->createAudioPatchCommand(patch, handle, delayMs);
223}
224
225status_t AudioPolicyService::clientReleaseAudioPatch(audio_patch_handle_t handle,
226                                                 int delayMs)
227{
228    return mAudioCommandThread->releaseAudioPatchCommand(handle, delayMs);
229}
230
231void AudioPolicyService::doOnAudioPatchListUpdate()
232{
233    Mutex::Autolock _l(mNotificationClientsLock);
234    for (size_t i = 0; i < mNotificationClients.size(); i++) {
235        mNotificationClients.valueAt(i)->onAudioPatchListUpdate();
236    }
237}
238
239void AudioPolicyService::onDynamicPolicyMixStateUpdate(String8 regId, int32_t state)
240{
241    ALOGV("AudioPolicyService::onDynamicPolicyMixStateUpdate(%s, %d)",
242            regId.string(), state);
243    mOutputCommandThread->dynamicPolicyMixStateUpdateCommand(regId, state);
244}
245
246void AudioPolicyService::doOnDynamicPolicyMixStateUpdate(String8 regId, int32_t state)
247{
248    Mutex::Autolock _l(mNotificationClientsLock);
249    for (size_t i = 0; i < mNotificationClients.size(); i++) {
250        mNotificationClients.valueAt(i)->onDynamicPolicyMixStateUpdate(regId, state);
251    }
252}
253
254status_t AudioPolicyService::clientSetAudioPortConfig(const struct audio_port_config *config,
255                                                      int delayMs)
256{
257    return mAudioCommandThread->setAudioPortConfigCommand(config, delayMs);
258}
259
260AudioPolicyService::NotificationClient::NotificationClient(const sp<AudioPolicyService>& service,
261                                                     const sp<IAudioPolicyServiceClient>& client,
262                                                     uid_t uid)
263    : mService(service), mUid(uid), mAudioPolicyServiceClient(client),
264      mAudioPortCallbacksEnabled(false)
265{
266}
267
268AudioPolicyService::NotificationClient::~NotificationClient()
269{
270}
271
272void AudioPolicyService::NotificationClient::binderDied(const wp<IBinder>& who __unused)
273{
274    sp<NotificationClient> keep(this);
275    sp<AudioPolicyService> service = mService.promote();
276    if (service != 0) {
277        service->removeNotificationClient(mUid);
278    }
279}
280
281void AudioPolicyService::NotificationClient::onAudioPortListUpdate()
282{
283    if (mAudioPolicyServiceClient != 0 && mAudioPortCallbacksEnabled) {
284        mAudioPolicyServiceClient->onAudioPortListUpdate();
285    }
286}
287
288void AudioPolicyService::NotificationClient::onAudioPatchListUpdate()
289{
290    if (mAudioPolicyServiceClient != 0 && mAudioPortCallbacksEnabled) {
291        mAudioPolicyServiceClient->onAudioPatchListUpdate();
292    }
293}
294
295void AudioPolicyService::NotificationClient::onDynamicPolicyMixStateUpdate(
296        String8 regId, int32_t state)
297{
298    if (mAudioPolicyServiceClient != 0) {
299            mAudioPolicyServiceClient->onDynamicPolicyMixStateUpdate(regId, state);
300    }
301}
302
303void AudioPolicyService::NotificationClient::setAudioPortCallbacksEnabled(bool enabled)
304{
305    mAudioPortCallbacksEnabled = enabled;
306}
307
308
309void AudioPolicyService::binderDied(const wp<IBinder>& who) {
310    ALOGW("binderDied() %p, calling pid %d", who.unsafe_get(),
311            IPCThreadState::self()->getCallingPid());
312}
313
314static bool tryLock(Mutex& mutex)
315{
316    bool locked = false;
317    for (int i = 0; i < kDumpLockRetries; ++i) {
318        if (mutex.tryLock() == NO_ERROR) {
319            locked = true;
320            break;
321        }
322        usleep(kDumpLockSleepUs);
323    }
324    return locked;
325}
326
327status_t AudioPolicyService::dumpInternals(int fd)
328{
329    const size_t SIZE = 256;
330    char buffer[SIZE];
331    String8 result;
332
333#ifdef USE_LEGACY_AUDIO_POLICY
334    snprintf(buffer, SIZE, "PolicyManager Interface: %p\n", mpAudioPolicy);
335#else
336    snprintf(buffer, SIZE, "AudioPolicyManager: %p\n", mAudioPolicyManager);
337#endif
338    result.append(buffer);
339    snprintf(buffer, SIZE, "Command Thread: %p\n", mAudioCommandThread.get());
340    result.append(buffer);
341    snprintf(buffer, SIZE, "Tones Thread: %p\n", mTonePlaybackThread.get());
342    result.append(buffer);
343
344    write(fd, result.string(), result.size());
345    return NO_ERROR;
346}
347
348status_t AudioPolicyService::dump(int fd, const Vector<String16>& args __unused)
349{
350    if (!dumpAllowed()) {
351        dumpPermissionDenial(fd);
352    } else {
353        bool locked = tryLock(mLock);
354        if (!locked) {
355            String8 result(kDeadlockedString);
356            write(fd, result.string(), result.size());
357        }
358
359        dumpInternals(fd);
360        if (mAudioCommandThread != 0) {
361            mAudioCommandThread->dump(fd);
362        }
363        if (mTonePlaybackThread != 0) {
364            mTonePlaybackThread->dump(fd);
365        }
366
367#ifdef USE_LEGACY_AUDIO_POLICY
368        if (mpAudioPolicy) {
369            mpAudioPolicy->dump(mpAudioPolicy, fd);
370        }
371#else
372        if (mAudioPolicyManager) {
373            mAudioPolicyManager->dump(fd);
374        }
375#endif
376
377        if (locked) mLock.unlock();
378    }
379    return NO_ERROR;
380}
381
382status_t AudioPolicyService::dumpPermissionDenial(int fd)
383{
384    const size_t SIZE = 256;
385    char buffer[SIZE];
386    String8 result;
387    snprintf(buffer, SIZE, "Permission Denial: "
388            "can't dump AudioPolicyService from pid=%d, uid=%d\n",
389            IPCThreadState::self()->getCallingPid(),
390            IPCThreadState::self()->getCallingUid());
391    result.append(buffer);
392    write(fd, result.string(), result.size());
393    return NO_ERROR;
394}
395
396status_t AudioPolicyService::onTransact(
397        uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
398{
399    return BnAudioPolicyService::onTransact(code, data, reply, flags);
400}
401
402
403// -----------  AudioPolicyService::AudioCommandThread implementation ----------
404
405AudioPolicyService::AudioCommandThread::AudioCommandThread(String8 name,
406                                                           const wp<AudioPolicyService>& service)
407    : Thread(false), mName(name), mService(service)
408{
409    mpToneGenerator = NULL;
410}
411
412
413AudioPolicyService::AudioCommandThread::~AudioCommandThread()
414{
415    if (!mAudioCommands.isEmpty()) {
416        release_wake_lock(mName.string());
417    }
418    mAudioCommands.clear();
419    delete mpToneGenerator;
420}
421
422void AudioPolicyService::AudioCommandThread::onFirstRef()
423{
424    run(mName.string(), ANDROID_PRIORITY_AUDIO);
425}
426
427bool AudioPolicyService::AudioCommandThread::threadLoop()
428{
429    nsecs_t waitTime = INT64_MAX;
430
431    mLock.lock();
432    while (!exitPending())
433    {
434        sp<AudioPolicyService> svc;
435        while (!mAudioCommands.isEmpty() && !exitPending()) {
436            nsecs_t curTime = systemTime();
437            // commands are sorted by increasing time stamp: execute them from index 0 and up
438            if (mAudioCommands[0]->mTime <= curTime) {
439                sp<AudioCommand> command = mAudioCommands[0];
440                mAudioCommands.removeAt(0);
441                mLastCommand = command;
442
443                switch (command->mCommand) {
444                case START_TONE: {
445                    mLock.unlock();
446                    ToneData *data = (ToneData *)command->mParam.get();
447                    ALOGV("AudioCommandThread() processing start tone %d on stream %d",
448                            data->mType, data->mStream);
449                    delete mpToneGenerator;
450                    mpToneGenerator = new ToneGenerator(data->mStream, 1.0);
451                    mpToneGenerator->startTone(data->mType);
452                    mLock.lock();
453                    }break;
454                case STOP_TONE: {
455                    mLock.unlock();
456                    ALOGV("AudioCommandThread() processing stop tone");
457                    if (mpToneGenerator != NULL) {
458                        mpToneGenerator->stopTone();
459                        delete mpToneGenerator;
460                        mpToneGenerator = NULL;
461                    }
462                    mLock.lock();
463                    }break;
464                case SET_VOLUME: {
465                    VolumeData *data = (VolumeData *)command->mParam.get();
466                    ALOGV("AudioCommandThread() processing set volume stream %d, \
467                            volume %f, output %d", data->mStream, data->mVolume, data->mIO);
468                    command->mStatus = AudioSystem::setStreamVolume(data->mStream,
469                                                                    data->mVolume,
470                                                                    data->mIO);
471                    }break;
472                case SET_PARAMETERS: {
473                    ParametersData *data = (ParametersData *)command->mParam.get();
474                    ALOGV("AudioCommandThread() processing set parameters string %s, io %d",
475                            data->mKeyValuePairs.string(), data->mIO);
476                    command->mStatus = AudioSystem::setParameters(data->mIO, data->mKeyValuePairs);
477                    }break;
478                case SET_VOICE_VOLUME: {
479                    VoiceVolumeData *data = (VoiceVolumeData *)command->mParam.get();
480                    ALOGV("AudioCommandThread() processing set voice volume volume %f",
481                            data->mVolume);
482                    command->mStatus = AudioSystem::setVoiceVolume(data->mVolume);
483                    }break;
484                case STOP_OUTPUT: {
485                    StopOutputData *data = (StopOutputData *)command->mParam.get();
486                    ALOGV("AudioCommandThread() processing stop output %d",
487                            data->mIO);
488                    svc = mService.promote();
489                    if (svc == 0) {
490                        break;
491                    }
492                    mLock.unlock();
493                    svc->doStopOutput(data->mIO, data->mStream, data->mSession);
494                    mLock.lock();
495                    }break;
496                case RELEASE_OUTPUT: {
497                    ReleaseOutputData *data = (ReleaseOutputData *)command->mParam.get();
498                    ALOGV("AudioCommandThread() processing release output %d",
499                            data->mIO);
500                    svc = mService.promote();
501                    if (svc == 0) {
502                        break;
503                    }
504                    mLock.unlock();
505                    svc->doReleaseOutput(data->mIO, data->mStream, data->mSession);
506                    mLock.lock();
507                    }break;
508                case CREATE_AUDIO_PATCH: {
509                    CreateAudioPatchData *data = (CreateAudioPatchData *)command->mParam.get();
510                    ALOGV("AudioCommandThread() processing create audio patch");
511                    sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
512                    if (af == 0) {
513                        command->mStatus = PERMISSION_DENIED;
514                    } else {
515                        command->mStatus = af->createAudioPatch(&data->mPatch, &data->mHandle);
516                    }
517                    } break;
518                case RELEASE_AUDIO_PATCH: {
519                    ReleaseAudioPatchData *data = (ReleaseAudioPatchData *)command->mParam.get();
520                    ALOGV("AudioCommandThread() processing release audio patch");
521                    sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
522                    if (af == 0) {
523                        command->mStatus = PERMISSION_DENIED;
524                    } else {
525                        command->mStatus = af->releaseAudioPatch(data->mHandle);
526                    }
527                    } break;
528                case UPDATE_AUDIOPORT_LIST: {
529                    ALOGV("AudioCommandThread() processing update audio port list");
530                    svc = mService.promote();
531                    if (svc == 0) {
532                        break;
533                    }
534                    mLock.unlock();
535                    svc->doOnAudioPortListUpdate();
536                    mLock.lock();
537                    }break;
538                case UPDATE_AUDIOPATCH_LIST: {
539                    ALOGV("AudioCommandThread() processing update audio patch list");
540                    svc = mService.promote();
541                    if (svc == 0) {
542                        break;
543                    }
544                    mLock.unlock();
545                    svc->doOnAudioPatchListUpdate();
546                    mLock.lock();
547                    }break;
548                case SET_AUDIOPORT_CONFIG: {
549                    SetAudioPortConfigData *data = (SetAudioPortConfigData *)command->mParam.get();
550                    ALOGV("AudioCommandThread() processing set port config");
551                    sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
552                    if (af == 0) {
553                        command->mStatus = PERMISSION_DENIED;
554                    } else {
555                        command->mStatus = af->setAudioPortConfig(&data->mConfig);
556                    }
557                    } break;
558                case DYN_POLICY_MIX_STATE_UPDATE: {
559                    DynPolicyMixStateUpdateData *data =
560                            (DynPolicyMixStateUpdateData *)command->mParam.get();
561                    //###ALOGV("AudioCommandThread() processing dyn policy mix state update");
562                    ALOGV("AudioCommandThread() processing dyn policy mix state update %s %d",
563                            data->mRegId.string(), data->mState);
564                    svc = mService.promote();
565                    if (svc == 0) {
566                        break;
567                    }
568                    mLock.unlock();
569                    svc->doOnDynamicPolicyMixStateUpdate(data->mRegId, data->mState);
570                    mLock.lock();
571                    } break;
572                default:
573                    ALOGW("AudioCommandThread() unknown command %d", command->mCommand);
574                }
575                {
576                    Mutex::Autolock _l(command->mLock);
577                    if (command->mWaitStatus) {
578                        command->mWaitStatus = false;
579                        command->mCond.signal();
580                    }
581                }
582                waitTime = INT64_MAX;
583            } else {
584                waitTime = mAudioCommands[0]->mTime - curTime;
585                break;
586            }
587        }
588        // release mLock before releasing strong reference on the service as
589        // AudioPolicyService destructor calls AudioCommandThread::exit() which acquires mLock.
590        mLock.unlock();
591        svc.clear();
592        mLock.lock();
593        if (!exitPending() && (mAudioCommands.isEmpty() || waitTime != INT64_MAX)) {
594            // release delayed commands wake lock
595            release_wake_lock(mName.string());
596            ALOGV("AudioCommandThread() going to sleep");
597            mWaitWorkCV.waitRelative(mLock, waitTime);
598            ALOGV("AudioCommandThread() waking up");
599        }
600    }
601    // release delayed commands wake lock before quitting
602    if (!mAudioCommands.isEmpty()) {
603        release_wake_lock(mName.string());
604    }
605    mLock.unlock();
606    return false;
607}
608
609status_t AudioPolicyService::AudioCommandThread::dump(int fd)
610{
611    const size_t SIZE = 256;
612    char buffer[SIZE];
613    String8 result;
614
615    snprintf(buffer, SIZE, "AudioCommandThread %p Dump\n", this);
616    result.append(buffer);
617    write(fd, result.string(), result.size());
618
619    bool locked = tryLock(mLock);
620    if (!locked) {
621        String8 result2(kCmdDeadlockedString);
622        write(fd, result2.string(), result2.size());
623    }
624
625    snprintf(buffer, SIZE, "- Commands:\n");
626    result = String8(buffer);
627    result.append("   Command Time        Wait pParam\n");
628    for (size_t i = 0; i < mAudioCommands.size(); i++) {
629        mAudioCommands[i]->dump(buffer, SIZE);
630        result.append(buffer);
631    }
632    result.append("  Last Command\n");
633    if (mLastCommand != 0) {
634        mLastCommand->dump(buffer, SIZE);
635        result.append(buffer);
636    } else {
637        result.append("     none\n");
638    }
639
640    write(fd, result.string(), result.size());
641
642    if (locked) mLock.unlock();
643
644    return NO_ERROR;
645}
646
647void AudioPolicyService::AudioCommandThread::startToneCommand(ToneGenerator::tone_type type,
648        audio_stream_type_t stream)
649{
650    sp<AudioCommand> command = new AudioCommand();
651    command->mCommand = START_TONE;
652    sp<ToneData> data = new ToneData();
653    data->mType = type;
654    data->mStream = stream;
655    command->mParam = data;
656    ALOGV("AudioCommandThread() adding tone start type %d, stream %d", type, stream);
657    sendCommand(command);
658}
659
660void AudioPolicyService::AudioCommandThread::stopToneCommand()
661{
662    sp<AudioCommand> command = new AudioCommand();
663    command->mCommand = STOP_TONE;
664    ALOGV("AudioCommandThread() adding tone stop");
665    sendCommand(command);
666}
667
668status_t AudioPolicyService::AudioCommandThread::volumeCommand(audio_stream_type_t stream,
669                                                               float volume,
670                                                               audio_io_handle_t output,
671                                                               int delayMs)
672{
673    sp<AudioCommand> command = new AudioCommand();
674    command->mCommand = SET_VOLUME;
675    sp<VolumeData> data = new VolumeData();
676    data->mStream = stream;
677    data->mVolume = volume;
678    data->mIO = output;
679    command->mParam = data;
680    command->mWaitStatus = true;
681    ALOGV("AudioCommandThread() adding set volume stream %d, volume %f, output %d",
682            stream, volume, output);
683    return sendCommand(command, delayMs);
684}
685
686status_t AudioPolicyService::AudioCommandThread::parametersCommand(audio_io_handle_t ioHandle,
687                                                                   const char *keyValuePairs,
688                                                                   int delayMs)
689{
690    sp<AudioCommand> command = new AudioCommand();
691    command->mCommand = SET_PARAMETERS;
692    sp<ParametersData> data = new ParametersData();
693    data->mIO = ioHandle;
694    data->mKeyValuePairs = String8(keyValuePairs);
695    command->mParam = data;
696    command->mWaitStatus = true;
697    ALOGV("AudioCommandThread() adding set parameter string %s, io %d ,delay %d",
698            keyValuePairs, ioHandle, delayMs);
699    return sendCommand(command, delayMs);
700}
701
702status_t AudioPolicyService::AudioCommandThread::voiceVolumeCommand(float volume, int delayMs)
703{
704    sp<AudioCommand> command = new AudioCommand();
705    command->mCommand = SET_VOICE_VOLUME;
706    sp<VoiceVolumeData> data = new VoiceVolumeData();
707    data->mVolume = volume;
708    command->mParam = data;
709    command->mWaitStatus = true;
710    ALOGV("AudioCommandThread() adding set voice volume volume %f", volume);
711    return sendCommand(command, delayMs);
712}
713
714void AudioPolicyService::AudioCommandThread::stopOutputCommand(audio_io_handle_t output,
715                                                               audio_stream_type_t stream,
716                                                               audio_session_t session)
717{
718    sp<AudioCommand> command = new AudioCommand();
719    command->mCommand = STOP_OUTPUT;
720    sp<StopOutputData> data = new StopOutputData();
721    data->mIO = output;
722    data->mStream = stream;
723    data->mSession = session;
724    command->mParam = data;
725    ALOGV("AudioCommandThread() adding stop output %d", output);
726    sendCommand(command);
727}
728
729void AudioPolicyService::AudioCommandThread::releaseOutputCommand(audio_io_handle_t output,
730                                                                  audio_stream_type_t stream,
731                                                                  audio_session_t session)
732{
733    sp<AudioCommand> command = new AudioCommand();
734    command->mCommand = RELEASE_OUTPUT;
735    sp<ReleaseOutputData> data = new ReleaseOutputData();
736    data->mIO = output;
737    data->mStream = stream;
738    data->mSession = session;
739    command->mParam = data;
740    ALOGV("AudioCommandThread() adding release output %d", output);
741    sendCommand(command);
742}
743
744status_t AudioPolicyService::AudioCommandThread::createAudioPatchCommand(
745                                                const struct audio_patch *patch,
746                                                audio_patch_handle_t *handle,
747                                                int delayMs)
748{
749    status_t status = NO_ERROR;
750
751    sp<AudioCommand> command = new AudioCommand();
752    command->mCommand = CREATE_AUDIO_PATCH;
753    CreateAudioPatchData *data = new CreateAudioPatchData();
754    data->mPatch = *patch;
755    data->mHandle = *handle;
756    command->mParam = data;
757    command->mWaitStatus = true;
758    ALOGV("AudioCommandThread() adding create patch delay %d", delayMs);
759    status = sendCommand(command, delayMs);
760    if (status == NO_ERROR) {
761        *handle = data->mHandle;
762    }
763    return status;
764}
765
766status_t AudioPolicyService::AudioCommandThread::releaseAudioPatchCommand(audio_patch_handle_t handle,
767                                                 int delayMs)
768{
769    sp<AudioCommand> command = new AudioCommand();
770    command->mCommand = RELEASE_AUDIO_PATCH;
771    ReleaseAudioPatchData *data = new ReleaseAudioPatchData();
772    data->mHandle = handle;
773    command->mParam = data;
774    command->mWaitStatus = true;
775    ALOGV("AudioCommandThread() adding release patch delay %d", delayMs);
776    return sendCommand(command, delayMs);
777}
778
779void AudioPolicyService::AudioCommandThread::updateAudioPortListCommand()
780{
781    sp<AudioCommand> command = new AudioCommand();
782    command->mCommand = UPDATE_AUDIOPORT_LIST;
783    ALOGV("AudioCommandThread() adding update audio port list");
784    sendCommand(command);
785}
786
787void AudioPolicyService::AudioCommandThread::updateAudioPatchListCommand()
788{
789    sp<AudioCommand>command = new AudioCommand();
790    command->mCommand = UPDATE_AUDIOPATCH_LIST;
791    ALOGV("AudioCommandThread() adding update audio patch list");
792    sendCommand(command);
793}
794
795status_t AudioPolicyService::AudioCommandThread::setAudioPortConfigCommand(
796                                            const struct audio_port_config *config, int delayMs)
797{
798    sp<AudioCommand> command = new AudioCommand();
799    command->mCommand = SET_AUDIOPORT_CONFIG;
800    SetAudioPortConfigData *data = new SetAudioPortConfigData();
801    data->mConfig = *config;
802    command->mParam = data;
803    command->mWaitStatus = true;
804    ALOGV("AudioCommandThread() adding set port config delay %d", delayMs);
805    return sendCommand(command, delayMs);
806}
807
808void AudioPolicyService::AudioCommandThread::dynamicPolicyMixStateUpdateCommand(
809        String8 regId, int32_t state)
810{
811    sp<AudioCommand> command = new AudioCommand();
812    command->mCommand = DYN_POLICY_MIX_STATE_UPDATE;
813    DynPolicyMixStateUpdateData *data = new DynPolicyMixStateUpdateData();
814    data->mRegId = regId;
815    data->mState = state;
816    command->mParam = data;
817    ALOGV("AudioCommandThread() sending dynamic policy mix (id=%s) state update to %d",
818            regId.string(), state);
819    sendCommand(command);
820}
821
822status_t AudioPolicyService::AudioCommandThread::sendCommand(sp<AudioCommand>& command, int delayMs)
823{
824    {
825        Mutex::Autolock _l(mLock);
826        insertCommand_l(command, delayMs);
827        mWaitWorkCV.signal();
828    }
829    Mutex::Autolock _l(command->mLock);
830    while (command->mWaitStatus) {
831        nsecs_t timeOutNs = kAudioCommandTimeoutNs + milliseconds(delayMs);
832        if (command->mCond.waitRelative(command->mLock, timeOutNs) != NO_ERROR) {
833            command->mStatus = TIMED_OUT;
834            command->mWaitStatus = false;
835        }
836    }
837    return command->mStatus;
838}
839
840// insertCommand_l() must be called with mLock held
841void AudioPolicyService::AudioCommandThread::insertCommand_l(sp<AudioCommand>& command, int delayMs)
842{
843    ssize_t i;  // not size_t because i will count down to -1
844    Vector < sp<AudioCommand> > removedCommands;
845    command->mTime = systemTime() + milliseconds(delayMs);
846
847    // acquire wake lock to make sure delayed commands are processed
848    if (mAudioCommands.isEmpty()) {
849        acquire_wake_lock(PARTIAL_WAKE_LOCK, mName.string());
850    }
851
852    // check same pending commands with later time stamps and eliminate them
853    for (i = mAudioCommands.size()-1; i >= 0; i--) {
854        sp<AudioCommand> command2 = mAudioCommands[i];
855        // commands are sorted by increasing time stamp: no need to scan the rest of mAudioCommands
856        if (command2->mTime <= command->mTime) break;
857
858        // create audio patch or release audio patch commands are equivalent
859        // with regard to filtering
860        if ((command->mCommand == CREATE_AUDIO_PATCH) ||
861                (command->mCommand == RELEASE_AUDIO_PATCH)) {
862            if ((command2->mCommand != CREATE_AUDIO_PATCH) &&
863                    (command2->mCommand != RELEASE_AUDIO_PATCH)) {
864                continue;
865            }
866        } else if (command2->mCommand != command->mCommand) continue;
867
868        switch (command->mCommand) {
869        case SET_PARAMETERS: {
870            ParametersData *data = (ParametersData *)command->mParam.get();
871            ParametersData *data2 = (ParametersData *)command2->mParam.get();
872            if (data->mIO != data2->mIO) break;
873            ALOGV("Comparing parameter command %s to new command %s",
874                    data2->mKeyValuePairs.string(), data->mKeyValuePairs.string());
875            AudioParameter param = AudioParameter(data->mKeyValuePairs);
876            AudioParameter param2 = AudioParameter(data2->mKeyValuePairs);
877            for (size_t j = 0; j < param.size(); j++) {
878                String8 key;
879                String8 value;
880                param.getAt(j, key, value);
881                for (size_t k = 0; k < param2.size(); k++) {
882                    String8 key2;
883                    String8 value2;
884                    param2.getAt(k, key2, value2);
885                    if (key2 == key) {
886                        param2.remove(key2);
887                        ALOGV("Filtering out parameter %s", key2.string());
888                        break;
889                    }
890                }
891            }
892            // if all keys have been filtered out, remove the command.
893            // otherwise, update the key value pairs
894            if (param2.size() == 0) {
895                removedCommands.add(command2);
896            } else {
897                data2->mKeyValuePairs = param2.toString();
898            }
899            command->mTime = command2->mTime;
900            // force delayMs to non 0 so that code below does not request to wait for
901            // command status as the command is now delayed
902            delayMs = 1;
903        } break;
904
905        case SET_VOLUME: {
906            VolumeData *data = (VolumeData *)command->mParam.get();
907            VolumeData *data2 = (VolumeData *)command2->mParam.get();
908            if (data->mIO != data2->mIO) break;
909            if (data->mStream != data2->mStream) break;
910            ALOGV("Filtering out volume command on output %d for stream %d",
911                    data->mIO, data->mStream);
912            removedCommands.add(command2);
913            command->mTime = command2->mTime;
914            // force delayMs to non 0 so that code below does not request to wait for
915            // command status as the command is now delayed
916            delayMs = 1;
917        } break;
918
919        case CREATE_AUDIO_PATCH:
920        case RELEASE_AUDIO_PATCH: {
921            audio_patch_handle_t handle;
922            struct audio_patch patch;
923            if (command->mCommand == CREATE_AUDIO_PATCH) {
924                handle = ((CreateAudioPatchData *)command->mParam.get())->mHandle;
925                patch = ((CreateAudioPatchData *)command->mParam.get())->mPatch;
926            } else {
927                handle = ((ReleaseAudioPatchData *)command->mParam.get())->mHandle;
928            }
929            audio_patch_handle_t handle2;
930            struct audio_patch patch2;
931            if (command2->mCommand == CREATE_AUDIO_PATCH) {
932                handle2 = ((CreateAudioPatchData *)command2->mParam.get())->mHandle;
933                patch2 = ((CreateAudioPatchData *)command2->mParam.get())->mPatch;
934            } else {
935                handle2 = ((ReleaseAudioPatchData *)command2->mParam.get())->mHandle;
936                memset(&patch2, 0, sizeof(patch2));
937            }
938            if (handle != handle2) break;
939            /* Filter CREATE_AUDIO_PATCH commands only when they are issued for
940               same output. */
941            if( (command->mCommand == CREATE_AUDIO_PATCH) &&
942                (command2->mCommand == CREATE_AUDIO_PATCH) ) {
943                bool isOutputDiff = false;
944                if (patch.num_sources == patch2.num_sources) {
945                    for (unsigned count = 0; count < patch.num_sources; count++) {
946                        if (patch.sources[count].id != patch2.sources[count].id) {
947                            isOutputDiff = true;
948                            break;
949                        }
950                    }
951                    if (isOutputDiff)
952                       break;
953                }
954            }
955            ALOGV("Filtering out %s audio patch command for handle %d",
956                  (command->mCommand == CREATE_AUDIO_PATCH) ? "create" : "release", handle);
957            removedCommands.add(command2);
958            command->mTime = command2->mTime;
959            // force delayMs to non 0 so that code below does not request to wait for
960            // command status as the command is now delayed
961            delayMs = 1;
962        } break;
963
964        case DYN_POLICY_MIX_STATE_UPDATE: {
965
966        } break;
967
968        case START_TONE:
969        case STOP_TONE:
970        default:
971            break;
972        }
973    }
974
975    // remove filtered commands
976    for (size_t j = 0; j < removedCommands.size(); j++) {
977        // removed commands always have time stamps greater than current command
978        for (size_t k = i + 1; k < mAudioCommands.size(); k++) {
979            if (mAudioCommands[k].get() == removedCommands[j].get()) {
980                ALOGV("suppressing command: %d", mAudioCommands[k]->mCommand);
981                mAudioCommands.removeAt(k);
982                break;
983            }
984        }
985    }
986    removedCommands.clear();
987
988    // Disable wait for status if delay is not 0.
989    // Except for create audio patch command because the returned patch handle
990    // is needed by audio policy manager
991    if (delayMs != 0 && command->mCommand != CREATE_AUDIO_PATCH) {
992        command->mWaitStatus = false;
993    }
994
995    // insert command at the right place according to its time stamp
996    ALOGV("inserting command: %d at index %zd, num commands %zu",
997            command->mCommand, i+1, mAudioCommands.size());
998    mAudioCommands.insertAt(command, i + 1);
999}
1000
1001void AudioPolicyService::AudioCommandThread::exit()
1002{
1003    ALOGV("AudioCommandThread::exit");
1004    {
1005        AutoMutex _l(mLock);
1006        requestExit();
1007        mWaitWorkCV.signal();
1008    }
1009    requestExitAndWait();
1010}
1011
1012void AudioPolicyService::AudioCommandThread::AudioCommand::dump(char* buffer, size_t size)
1013{
1014    snprintf(buffer, size, "   %02d      %06d.%03d  %01u    %p\n",
1015            mCommand,
1016            (int)ns2s(mTime),
1017            (int)ns2ms(mTime)%1000,
1018            mWaitStatus,
1019            mParam.get());
1020}
1021
1022/******* helpers for the service_ops callbacks defined below *********/
1023void AudioPolicyService::setParameters(audio_io_handle_t ioHandle,
1024                                       const char *keyValuePairs,
1025                                       int delayMs)
1026{
1027    mAudioCommandThread->parametersCommand(ioHandle, keyValuePairs,
1028                                           delayMs);
1029}
1030
1031int AudioPolicyService::setStreamVolume(audio_stream_type_t stream,
1032                                        float volume,
1033                                        audio_io_handle_t output,
1034                                        int delayMs)
1035{
1036    return (int)mAudioCommandThread->volumeCommand(stream, volume,
1037                                                   output, delayMs);
1038}
1039
1040int AudioPolicyService::startTone(audio_policy_tone_t tone,
1041                                  audio_stream_type_t stream)
1042{
1043    if (tone != AUDIO_POLICY_TONE_IN_CALL_NOTIFICATION) {
1044        ALOGE("startTone: illegal tone requested (%d)", tone);
1045    }
1046    if (stream != AUDIO_STREAM_VOICE_CALL) {
1047        ALOGE("startTone: illegal stream (%d) requested for tone %d", stream,
1048            tone);
1049    }
1050    mTonePlaybackThread->startToneCommand(ToneGenerator::TONE_SUP_CALL_WAITING,
1051                                          AUDIO_STREAM_VOICE_CALL);
1052    return 0;
1053}
1054
1055int AudioPolicyService::stopTone()
1056{
1057    mTonePlaybackThread->stopToneCommand();
1058    return 0;
1059}
1060
1061int AudioPolicyService::setVoiceVolume(float volume, int delayMs)
1062{
1063    return (int)mAudioCommandThread->voiceVolumeCommand(volume, delayMs);
1064}
1065
1066extern "C" {
1067audio_module_handle_t aps_load_hw_module(void *service __unused,
1068                                             const char *name);
1069audio_io_handle_t aps_open_output(void *service __unused,
1070                                         audio_devices_t *pDevices,
1071                                         uint32_t *pSamplingRate,
1072                                         audio_format_t *pFormat,
1073                                         audio_channel_mask_t *pChannelMask,
1074                                         uint32_t *pLatencyMs,
1075                                         audio_output_flags_t flags);
1076
1077audio_io_handle_t aps_open_output_on_module(void *service __unused,
1078                                                   audio_module_handle_t module,
1079                                                   audio_devices_t *pDevices,
1080                                                   uint32_t *pSamplingRate,
1081                                                   audio_format_t *pFormat,
1082                                                   audio_channel_mask_t *pChannelMask,
1083                                                   uint32_t *pLatencyMs,
1084                                                   audio_output_flags_t flags,
1085                                                   const audio_offload_info_t *offloadInfo);
1086audio_io_handle_t aps_open_dup_output(void *service __unused,
1087                                                 audio_io_handle_t output1,
1088                                                 audio_io_handle_t output2);
1089int aps_close_output(void *service __unused, audio_io_handle_t output);
1090int aps_suspend_output(void *service __unused, audio_io_handle_t output);
1091int aps_restore_output(void *service __unused, audio_io_handle_t output);
1092audio_io_handle_t aps_open_input(void *service __unused,
1093                                        audio_devices_t *pDevices,
1094                                        uint32_t *pSamplingRate,
1095                                        audio_format_t *pFormat,
1096                                        audio_channel_mask_t *pChannelMask,
1097                                        audio_in_acoustics_t acoustics __unused);
1098audio_io_handle_t aps_open_input_on_module(void *service __unused,
1099                                                  audio_module_handle_t module,
1100                                                  audio_devices_t *pDevices,
1101                                                  uint32_t *pSamplingRate,
1102                                                  audio_format_t *pFormat,
1103                                                  audio_channel_mask_t *pChannelMask);
1104int aps_close_input(void *service __unused, audio_io_handle_t input);
1105int aps_invalidate_stream(void *service __unused, audio_stream_type_t stream);
1106int aps_move_effects(void *service __unused, int session,
1107                                audio_io_handle_t src_output,
1108                                audio_io_handle_t dst_output);
1109char * aps_get_parameters(void *service __unused, audio_io_handle_t io_handle,
1110                                     const char *keys);
1111void aps_set_parameters(void *service, audio_io_handle_t io_handle,
1112                                   const char *kv_pairs, int delay_ms);
1113int aps_set_stream_volume(void *service, audio_stream_type_t stream,
1114                                     float volume, audio_io_handle_t output,
1115                                     int delay_ms);
1116int aps_start_tone(void *service, audio_policy_tone_t tone,
1117                              audio_stream_type_t stream);
1118int aps_stop_tone(void *service);
1119int aps_set_voice_volume(void *service, float volume, int delay_ms);
1120};
1121
1122namespace {
1123    struct audio_policy_service_ops aps_ops = {
1124        .open_output           = aps_open_output,
1125        .open_duplicate_output = aps_open_dup_output,
1126        .close_output          = aps_close_output,
1127        .suspend_output        = aps_suspend_output,
1128        .restore_output        = aps_restore_output,
1129        .open_input            = aps_open_input,
1130        .close_input           = aps_close_input,
1131        .set_stream_volume     = aps_set_stream_volume,
1132        .invalidate_stream     = aps_invalidate_stream,
1133        .set_parameters        = aps_set_parameters,
1134        .get_parameters        = aps_get_parameters,
1135        .start_tone            = aps_start_tone,
1136        .stop_tone             = aps_stop_tone,
1137        .set_voice_volume      = aps_set_voice_volume,
1138        .move_effects          = aps_move_effects,
1139        .load_hw_module        = aps_load_hw_module,
1140        .open_output_on_module = aps_open_output_on_module,
1141        .open_input_on_module  = aps_open_input_on_module,
1142    };
1143}; // namespace <unnamed>
1144
1145}; // namespace android
1146