MediaPlayerService.cpp revision 39399b6b08b4e9fd7eae50e58e93b07216ad697f 
1/*
2**
3** Copyright 2008, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18// Proxy for media player implementations
19
20//#define LOG_NDEBUG 0
21#define LOG_TAG "MediaPlayerService"
22#include <utils/Log.h>
23
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <sys/time.h>
27#include <dirent.h>
28#include <unistd.h>
29
30#include <string.h>
31
32#include <cutils/atomic.h>
33#include <cutils/properties.h> // for property_get
34
35#include <utils/misc.h>
36
37#include <binder/IPCThreadState.h>
38#include <binder/IServiceManager.h>
39#include <binder/MemoryHeapBase.h>
40#include <binder/MemoryBase.h>
41#include <gui/Surface.h>
42#include <utils/Errors.h>  // for status_t
43#include <utils/String8.h>
44#include <utils/SystemClock.h>
45#include <utils/Timers.h>
46#include <utils/Vector.h>
47
48#include <media/AudioPolicyHelper.h>
49#include <media/IMediaHTTPService.h>
50#include <media/IRemoteDisplay.h>
51#include <media/IRemoteDisplayClient.h>
52#include <media/MediaPlayerInterface.h>
53#include <media/mediarecorder.h>
54#include <media/MediaMetadataRetrieverInterface.h>
55#include <media/Metadata.h>
56#include <media/AudioTrack.h>
57#include <media/MemoryLeakTrackUtil.h>
58#include <media/stagefright/MediaCodecList.h>
59#include <media/stagefright/MediaErrors.h>
60#include <media/stagefright/Utils.h>
61#include <media/stagefright/foundation/ADebug.h>
62#include <media/stagefright/foundation/ALooperRoster.h>
63#include <media/stagefright/SurfaceUtils.h>
64#include <mediautils/BatteryNotifier.h>
65
66#include <memunreachable/memunreachable.h>
67#include <system/audio.h>
68
69#include <private/android_filesystem_config.h>
70
71#include "ActivityManager.h"
72#include "MediaRecorderClient.h"
73#include "MediaPlayerService.h"
74#include "MetadataRetrieverClient.h"
75#include "MediaPlayerFactory.h"
76
77#include "TestPlayerStub.h"
78#include "nuplayer/NuPlayerDriver.h"
79
80#include <OMX.h>
81
82#include "HDCP.h"
83#include "HTTPBase.h"
84#include "RemoteDisplay.h"
85
86namespace {
87using android::media::Metadata;
88using android::status_t;
89using android::OK;
90using android::BAD_VALUE;
91using android::NOT_ENOUGH_DATA;
92using android::Parcel;
93
94// Max number of entries in the filter.
95const int kMaxFilterSize = 64;  // I pulled that out of thin air.
96
97const float kMaxRequiredSpeed = 8.0f; // for PCM tracks allow up to 8x speedup.
98
99// FIXME: Move all the metadata related function in the Metadata.cpp
100
101
102// Unmarshall a filter from a Parcel.
103// Filter format in a parcel:
104//
105//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
106// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
107// |                       number of entries (n)                   |
108// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
109// |                       metadata type 1                         |
110// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
111// |                       metadata type 2                         |
112// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
113//  ....
114// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
115// |                       metadata type n                         |
116// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
117//
118// @param p Parcel that should start with a filter.
119// @param[out] filter On exit contains the list of metadata type to be
120//                    filtered.
121// @param[out] status On exit contains the status code to be returned.
122// @return true if the parcel starts with a valid filter.
123bool unmarshallFilter(const Parcel& p,
124                      Metadata::Filter *filter,
125                      status_t *status)
126{
127    int32_t val;
128    if (p.readInt32(&val) != OK)
129    {
130        ALOGE("Failed to read filter's length");
131        *status = NOT_ENOUGH_DATA;
132        return false;
133    }
134
135    if( val > kMaxFilterSize || val < 0)
136    {
137        ALOGE("Invalid filter len %d", val);
138        *status = BAD_VALUE;
139        return false;
140    }
141
142    const size_t num = val;
143
144    filter->clear();
145    filter->setCapacity(num);
146
147    size_t size = num * sizeof(Metadata::Type);
148
149
150    if (p.dataAvail() < size)
151    {
152        ALOGE("Filter too short expected %zu but got %zu", size, p.dataAvail());
153        *status = NOT_ENOUGH_DATA;
154        return false;
155    }
156
157    const Metadata::Type *data =
158            static_cast<const Metadata::Type*>(p.readInplace(size));
159
160    if (NULL == data)
161    {
162        ALOGE("Filter had no data");
163        *status = BAD_VALUE;
164        return false;
165    }
166
167    // TODO: The stl impl of vector would be more efficient here
168    // because it degenerates into a memcpy on pod types. Try to
169    // replace later or use stl::set.
170    for (size_t i = 0; i < num; ++i)
171    {
172        filter->add(*data);
173        ++data;
174    }
175    *status = OK;
176    return true;
177}
178
179// @param filter Of metadata type.
180// @param val To be searched.
181// @return true if a match was found.
182bool findMetadata(const Metadata::Filter& filter, const int32_t val)
183{
184    // Deal with empty and ANY right away
185    if (filter.isEmpty()) return false;
186    if (filter[0] == Metadata::kAny) return true;
187
188    return filter.indexOf(val) >= 0;
189}
190
191}  // anonymous namespace
192
193
194namespace {
195using android::Parcel;
196using android::String16;
197
198// marshalling tag indicating flattened utf16 tags
199// keep in sync with frameworks/base/media/java/android/media/AudioAttributes.java
200const int32_t kAudioAttributesMarshallTagFlattenTags = 1;
201
202// Audio attributes format in a parcel:
203//
204//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
205// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
206// |                       usage                                   |
207// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
208// |                       content_type                            |
209// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
210// |                       source                                  |
211// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
212// |                       flags                                   |
213// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
214// |                       kAudioAttributesMarshallTagFlattenTags  | // ignore tags if not found
215// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
216// |                       flattened tags in UTF16                 |
217// |                         ...                                   |
218// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
219//
220// @param p Parcel that contains audio attributes.
221// @param[out] attributes On exit points to an initialized audio_attributes_t structure
222// @param[out] status On exit contains the status code to be returned.
223void unmarshallAudioAttributes(const Parcel& parcel, audio_attributes_t *attributes)
224{
225    attributes->usage = (audio_usage_t) parcel.readInt32();
226    attributes->content_type = (audio_content_type_t) parcel.readInt32();
227    attributes->source = (audio_source_t) parcel.readInt32();
228    attributes->flags = (audio_flags_mask_t) parcel.readInt32();
229    const bool hasFlattenedTag = (parcel.readInt32() == kAudioAttributesMarshallTagFlattenTags);
230    if (hasFlattenedTag) {
231        // the tags are UTF16, convert to UTF8
232        String16 tags = parcel.readString16();
233        ssize_t realTagSize = utf16_to_utf8_length(tags.string(), tags.size());
234        if (realTagSize <= 0) {
235            strcpy(attributes->tags, "");
236        } else {
237            // copy the flattened string into the attributes as the destination for the conversion:
238            // copying array size -1, array for tags was calloc'd, no need to NULL-terminate it
239            size_t tagSize = realTagSize > AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 ?
240                    AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 : realTagSize;
241            utf16_to_utf8(tags.string(), tagSize, attributes->tags,
242                    sizeof(attributes->tags) / sizeof(attributes->tags[0]));
243        }
244    } else {
245        ALOGE("unmarshallAudioAttributes() received unflattened tags, ignoring tag values");
246        strcpy(attributes->tags, "");
247    }
248}
249} // anonymous namespace
250
251
252namespace android {
253
254extern ALooperRoster gLooperRoster;
255
256
257static bool checkPermission(const char* permissionString) {
258    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
259    bool ok = checkCallingPermission(String16(permissionString));
260    if (!ok) ALOGE("Request requires %s", permissionString);
261    return ok;
262}
263
264// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
265/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
266/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
267
268void MediaPlayerService::instantiate() {
269    defaultServiceManager()->addService(
270            String16("media.player"), new MediaPlayerService());
271}
272
273MediaPlayerService::MediaPlayerService()
274{
275    ALOGV("MediaPlayerService created");
276    mNextConnId = 1;
277
278    mBatteryAudio.refCount = 0;
279    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
280        mBatteryAudio.deviceOn[i] = 0;
281        mBatteryAudio.lastTime[i] = 0;
282        mBatteryAudio.totalTime[i] = 0;
283    }
284    // speaker is on by default
285    mBatteryAudio.deviceOn[SPEAKER] = 1;
286
287    // reset battery stats
288    // if the mediaserver has crashed, battery stats could be left
289    // in bad state, reset the state upon service start.
290    BatteryNotifier::getInstance().noteResetVideo();
291
292    MediaPlayerFactory::registerBuiltinFactories();
293}
294
295MediaPlayerService::~MediaPlayerService()
296{
297    ALOGV("MediaPlayerService destroyed");
298}
299
300sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(const String16 &opPackageName)
301{
302    pid_t pid = IPCThreadState::self()->getCallingPid();
303    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid, opPackageName);
304    wp<MediaRecorderClient> w = recorder;
305    Mutex::Autolock lock(mLock);
306    mMediaRecorderClients.add(w);
307    ALOGV("Create new media recorder client from pid %d", pid);
308    return recorder;
309}
310
311void MediaPlayerService::removeMediaRecorderClient(const wp<MediaRecorderClient>& client)
312{
313    Mutex::Autolock lock(mLock);
314    mMediaRecorderClients.remove(client);
315    ALOGV("Delete media recorder client");
316}
317
318sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
319{
320    pid_t pid = IPCThreadState::self()->getCallingPid();
321    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
322    ALOGV("Create new media retriever from pid %d", pid);
323    return retriever;
324}
325
326sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
327        audio_session_t audioSessionId)
328{
329    pid_t pid = IPCThreadState::self()->getCallingPid();
330    int32_t connId = android_atomic_inc(&mNextConnId);
331
332    sp<Client> c = new Client(
333            this, pid, connId, client, audioSessionId,
334            IPCThreadState::self()->getCallingUid());
335
336    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
337         IPCThreadState::self()->getCallingUid());
338
339    wp<Client> w = c;
340    {
341        Mutex::Autolock lock(mLock);
342        mClients.add(w);
343    }
344    return c;
345}
346
347sp<IMediaCodecList> MediaPlayerService::getCodecList() const {
348    return MediaCodecList::getLocalInstance();
349}
350
351sp<IOMX> MediaPlayerService::getOMX() {
352    ALOGI("MediaPlayerService::getOMX");
353    Mutex::Autolock autoLock(mLock);
354
355    if (mOMX.get() == NULL) {
356        mOMX = new OMX;
357    }
358
359    return mOMX;
360}
361
362sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
363    return new HDCP(createEncryptionModule);
364}
365
366sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
367        const String16 &opPackageName,
368        const sp<IRemoteDisplayClient>& client, const String8& iface) {
369    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
370        return NULL;
371    }
372
373    return new RemoteDisplay(opPackageName, client, iface.string());
374}
375
376status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
377{
378    const size_t SIZE = 256;
379    char buffer[SIZE];
380    String8 result;
381
382    result.append(" AudioOutput\n");
383    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
384            mStreamType, mLeftVolume, mRightVolume);
385    result.append(buffer);
386    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
387            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
388    result.append(buffer);
389    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
390            mAuxEffectId, mSendLevel);
391    result.append(buffer);
392
393    ::write(fd, result.string(), result.size());
394    if (mTrack != 0) {
395        mTrack->dump(fd, args);
396    }
397    return NO_ERROR;
398}
399
400status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args)
401{
402    const size_t SIZE = 256;
403    char buffer[SIZE];
404    String8 result;
405    result.append(" Client\n");
406    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
407            mPid, mConnId, mStatus, mLoop?"true": "false");
408    result.append(buffer);
409    write(fd, result.string(), result.size());
410    if (mPlayer != NULL) {
411        mPlayer->dump(fd, args);
412    }
413    if (mAudioOutput != 0) {
414        mAudioOutput->dump(fd, args);
415    }
416    write(fd, "\n", 1);
417    return NO_ERROR;
418}
419
420/**
421 * The only arguments this understands right now are -c, -von and -voff,
422 * which are parsed by ALooperRoster::dump()
423 */
424status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
425{
426    const size_t SIZE = 256;
427    char buffer[SIZE];
428    String8 result;
429    SortedVector< sp<Client> > clients; //to serialise the mutex unlock & client destruction.
430    SortedVector< sp<MediaRecorderClient> > mediaRecorderClients;
431
432    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
433        snprintf(buffer, SIZE, "Permission Denial: "
434                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
435                IPCThreadState::self()->getCallingPid(),
436                IPCThreadState::self()->getCallingUid());
437        result.append(buffer);
438    } else {
439        Mutex::Autolock lock(mLock);
440        for (int i = 0, n = mClients.size(); i < n; ++i) {
441            sp<Client> c = mClients[i].promote();
442            if (c != 0) c->dump(fd, args);
443            clients.add(c);
444        }
445        if (mMediaRecorderClients.size() == 0) {
446                result.append(" No media recorder client\n\n");
447        } else {
448            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
449                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
450                if (c != 0) {
451                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
452                    result.append(buffer);
453                    write(fd, result.string(), result.size());
454                    result = "\n";
455                    c->dump(fd, args);
456                    mediaRecorderClients.add(c);
457                }
458            }
459        }
460
461        result.append(" Files opened and/or mapped:\n");
462        snprintf(buffer, SIZE, "/proc/%d/maps", getpid());
463        FILE *f = fopen(buffer, "r");
464        if (f) {
465            while (!feof(f)) {
466                fgets(buffer, SIZE, f);
467                if (strstr(buffer, " /storage/") ||
468                    strstr(buffer, " /system/sounds/") ||
469                    strstr(buffer, " /data/") ||
470                    strstr(buffer, " /system/media/")) {
471                    result.append("  ");
472                    result.append(buffer);
473                }
474            }
475            fclose(f);
476        } else {
477            result.append("couldn't open ");
478            result.append(buffer);
479            result.append("\n");
480        }
481
482        snprintf(buffer, SIZE, "/proc/%d/fd", getpid());
483        DIR *d = opendir(buffer);
484        if (d) {
485            struct dirent *ent;
486            while((ent = readdir(d)) != NULL) {
487                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
488                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", getpid(), ent->d_name);
489                    struct stat s;
490                    if (lstat(buffer, &s) == 0) {
491                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
492                            char linkto[256];
493                            int len = readlink(buffer, linkto, sizeof(linkto));
494                            if(len > 0) {
495                                if(len > 255) {
496                                    linkto[252] = '.';
497                                    linkto[253] = '.';
498                                    linkto[254] = '.';
499                                    linkto[255] = 0;
500                                } else {
501                                    linkto[len] = 0;
502                                }
503                                if (strstr(linkto, "/storage/") == linkto ||
504                                    strstr(linkto, "/system/sounds/") == linkto ||
505                                    strstr(linkto, "/data/") == linkto ||
506                                    strstr(linkto, "/system/media/") == linkto) {
507                                    result.append("  ");
508                                    result.append(buffer);
509                                    result.append(" -> ");
510                                    result.append(linkto);
511                                    result.append("\n");
512                                }
513                            }
514                        } else {
515                            result.append("  unexpected type for ");
516                            result.append(buffer);
517                            result.append("\n");
518                        }
519                    }
520                }
521            }
522            closedir(d);
523        } else {
524            result.append("couldn't open ");
525            result.append(buffer);
526            result.append("\n");
527        }
528
529        gLooperRoster.dump(fd, args);
530
531        bool dumpMem = false;
532        bool unreachableMemory = false;
533        for (size_t i = 0; i < args.size(); i++) {
534            if (args[i] == String16("-m")) {
535                dumpMem = true;
536            } else if (args[i] == String16("--unreachable")) {
537                unreachableMemory = true;
538            }
539        }
540        if (dumpMem) {
541            result.append("\nDumping memory:\n");
542            std::string s = dumpMemoryAddresses(100 /* limit */);
543            result.append(s.c_str(), s.size());
544        }
545        if (unreachableMemory) {
546            result.append("\nDumping unreachable memory:\n");
547            // TODO - should limit be an argument parameter?
548            std::string s = GetUnreachableMemoryString(true /* contents */, 10000 /* limit */);
549            result.append(s.c_str(), s.size());
550        }
551    }
552    write(fd, result.string(), result.size());
553    return NO_ERROR;
554}
555
556void MediaPlayerService::removeClient(const wp<Client>& client)
557{
558    Mutex::Autolock lock(mLock);
559    mClients.remove(client);
560}
561
562bool MediaPlayerService::hasClient(wp<Client> client)
563{
564    Mutex::Autolock lock(mLock);
565    return mClients.indexOf(client) != NAME_NOT_FOUND;
566}
567
568MediaPlayerService::Client::Client(
569        const sp<MediaPlayerService>& service, pid_t pid,
570        int32_t connId, const sp<IMediaPlayerClient>& client,
571        audio_session_t audioSessionId, uid_t uid)
572{
573    ALOGV("Client(%d) constructor", connId);
574    mPid = pid;
575    mConnId = connId;
576    mService = service;
577    mClient = client;
578    mLoop = false;
579    mStatus = NO_INIT;
580    mAudioSessionId = audioSessionId;
581    mUid = uid;
582    mRetransmitEndpointValid = false;
583    mAudioAttributes = NULL;
584
585#if CALLBACK_ANTAGONIZER
586    ALOGD("create Antagonizer");
587    mAntagonizer = new Antagonizer(notify, this);
588#endif
589}
590
591MediaPlayerService::Client::~Client()
592{
593    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
594    mAudioOutput.clear();
595    wp<Client> client(this);
596    disconnect();
597    mService->removeClient(client);
598    if (mAudioAttributes != NULL) {
599        free(mAudioAttributes);
600    }
601    clearDeathNotifiers();
602}
603
604void MediaPlayerService::Client::disconnect()
605{
606    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
607    // grab local reference and clear main reference to prevent future
608    // access to object
609    sp<MediaPlayerBase> p;
610    {
611        Mutex::Autolock l(mLock);
612        p = mPlayer;
613        mClient.clear();
614    }
615
616    mPlayer.clear();
617
618    // clear the notification to prevent callbacks to dead client
619    // and reset the player. We assume the player will serialize
620    // access to itself if necessary.
621    if (p != 0) {
622        p->setNotifyCallback(0, 0);
623#if CALLBACK_ANTAGONIZER
624        ALOGD("kill Antagonizer");
625        mAntagonizer->kill();
626#endif
627        p->reset();
628    }
629
630    disconnectNativeWindow();
631
632    IPCThreadState::self()->flushCommands();
633}
634
635sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
636{
637    // determine if we have the right player type
638    sp<MediaPlayerBase> p = mPlayer;
639    if ((p != NULL) && (p->playerType() != playerType)) {
640        ALOGV("delete player");
641        p.clear();
642    }
643    if (p == NULL) {
644        p = MediaPlayerFactory::createPlayer(playerType, this, notify, mPid);
645    }
646
647    if (p != NULL) {
648        p->setUID(mUid);
649    }
650
651    return p;
652}
653
654MediaPlayerService::Client::ServiceDeathNotifier::ServiceDeathNotifier(
655        const sp<IBinder>& service,
656        const sp<MediaPlayerBase>& listener,
657        int which) {
658    mService = service;
659    mOmx = nullptr;
660    mListener = listener;
661    mWhich = which;
662}
663
664MediaPlayerService::Client::ServiceDeathNotifier::ServiceDeathNotifier(
665        const sp<IOmx>& omx,
666        const sp<MediaPlayerBase>& listener,
667        int which) {
668    mService = nullptr;
669    mOmx = omx;
670    mListener = listener;
671    mWhich = which;
672}
673
674MediaPlayerService::Client::ServiceDeathNotifier::~ServiceDeathNotifier() {
675}
676
677void MediaPlayerService::Client::ServiceDeathNotifier::binderDied(const wp<IBinder>& /*who*/) {
678    sp<MediaPlayerBase> listener = mListener.promote();
679    if (listener != NULL) {
680        listener->sendEvent(MEDIA_ERROR, MEDIA_ERROR_SERVER_DIED, mWhich);
681    } else {
682        ALOGW("listener for process %d death is gone", mWhich);
683    }
684}
685
686void MediaPlayerService::Client::ServiceDeathNotifier::serviceDied(
687        uint64_t /* cookie */,
688        const wp<::android::hidl::base::V1_0::IBase>& /* who */) {
689    sp<MediaPlayerBase> listener = mListener.promote();
690    if (listener != NULL) {
691        listener->sendEvent(MEDIA_ERROR, MEDIA_ERROR_SERVER_DIED, mWhich);
692    } else {
693        ALOGW("listener for process %d death is gone", mWhich);
694    }
695}
696
697void MediaPlayerService::Client::ServiceDeathNotifier::unlinkToDeath() {
698    if (mService != nullptr) {
699        mService->unlinkToDeath(this);
700        mService = nullptr;
701    } else if (mOmx != nullptr) {
702        mOmx->unlinkToDeath(this);
703        mOmx = nullptr;
704    }
705}
706
707void MediaPlayerService::Client::clearDeathNotifiers() {
708    if (mExtractorDeathListener != nullptr) {
709        mExtractorDeathListener->unlinkToDeath();
710        mExtractorDeathListener = nullptr;
711    }
712    if (mCodecDeathListener != nullptr) {
713        mCodecDeathListener->unlinkToDeath();
714        mCodecDeathListener = nullptr;
715    }
716}
717
718sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
719        player_type playerType)
720{
721    ALOGV("player type = %d", playerType);
722    clearDeathNotifiers();
723
724    // create the right type of player
725    sp<MediaPlayerBase> p = createPlayer(playerType);
726    if (p == NULL) {
727        return p;
728    }
729
730    sp<IServiceManager> sm = defaultServiceManager();
731    sp<IBinder> binder = sm->getService(String16("media.extractor"));
732    if (binder == NULL) {
733        ALOGE("extractor service not available");
734        return NULL;
735    }
736    mExtractorDeathListener = new ServiceDeathNotifier(binder, p, MEDIAEXTRACTOR_PROCESS_DEATH);
737    binder->linkToDeath(mExtractorDeathListener);
738
739    if (property_get_bool("persist.media.treble_omx", true)) {
740        // Treble IOmx
741        sp<IOmx> omx = IOmx::getService();
742        if (omx == nullptr) {
743            ALOGE("Treble IOmx not available");
744            return NULL;
745        }
746        mCodecDeathListener = new ServiceDeathNotifier(omx, p, MEDIACODEC_PROCESS_DEATH);
747        omx->linkToDeath(mCodecDeathListener, 0);
748    } else {
749        // Legacy IOMX
750        binder = sm->getService(String16("media.codec"));
751        if (binder == NULL) {
752            ALOGE("codec service not available");
753            return NULL;
754        }
755        mCodecDeathListener = new ServiceDeathNotifier(binder, p, MEDIACODEC_PROCESS_DEATH);
756        binder->linkToDeath(mCodecDeathListener);
757    }
758
759    if (!p->hardwareOutput()) {
760        Mutex::Autolock l(mLock);
761        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
762                mPid, mAudioAttributes);
763        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
764    }
765
766    return p;
767}
768
769void MediaPlayerService::Client::setDataSource_post(
770        const sp<MediaPlayerBase>& p,
771        status_t status)
772{
773    ALOGV(" setDataSource");
774    mStatus = status;
775    if (mStatus != OK) {
776        ALOGE("  error: %d", mStatus);
777        return;
778    }
779
780    // Set the re-transmission endpoint if one was chosen.
781    if (mRetransmitEndpointValid) {
782        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
783        if (mStatus != NO_ERROR) {
784            ALOGE("setRetransmitEndpoint error: %d", mStatus);
785        }
786    }
787
788    if (mStatus == OK) {
789        mPlayer = p;
790    }
791}
792
793status_t MediaPlayerService::Client::setDataSource(
794        const sp<IMediaHTTPService> &httpService,
795        const char *url,
796        const KeyedVector<String8, String8> *headers)
797{
798    ALOGV("setDataSource(%s)", url);
799    if (url == NULL)
800        return UNKNOWN_ERROR;
801
802    if ((strncmp(url, "http://", 7) == 0) ||
803        (strncmp(url, "https://", 8) == 0) ||
804        (strncmp(url, "rtsp://", 7) == 0)) {
805        if (!checkPermission("android.permission.INTERNET")) {
806            return PERMISSION_DENIED;
807        }
808    }
809
810    if (strncmp(url, "content://", 10) == 0) {
811        // get a filedescriptor for the content Uri and
812        // pass it to the setDataSource(fd) method
813
814        String16 url16(url);
815        int fd = android::openContentProviderFile(url16);
816        if (fd < 0)
817        {
818            ALOGE("Couldn't open fd for %s", url);
819            return UNKNOWN_ERROR;
820        }
821        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
822        close(fd);
823        return mStatus;
824    } else {
825        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
826        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
827        if (p == NULL) {
828            return NO_INIT;
829        }
830
831        setDataSource_post(p, p->setDataSource(httpService, url, headers));
832        return mStatus;
833    }
834}
835
836status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
837{
838    ALOGV("setDataSource fd=%d (%s), offset=%lld, length=%lld",
839            fd, nameForFd(fd).c_str(), (long long) offset, (long long) length);
840    struct stat sb;
841    int ret = fstat(fd, &sb);
842    if (ret != 0) {
843        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
844        return UNKNOWN_ERROR;
845    }
846
847    ALOGV("st_dev  = %llu", static_cast<unsigned long long>(sb.st_dev));
848    ALOGV("st_mode = %u", sb.st_mode);
849    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
850    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
851    ALOGV("st_size = %llu", static_cast<unsigned long long>(sb.st_size));
852
853    if (offset >= sb.st_size) {
854        ALOGE("offset error");
855        return UNKNOWN_ERROR;
856    }
857    if (offset + length > sb.st_size) {
858        length = sb.st_size - offset;
859        ALOGV("calculated length = %lld", (long long)length);
860    }
861
862    player_type playerType = MediaPlayerFactory::getPlayerType(this,
863                                                               fd,
864                                                               offset,
865                                                               length);
866    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
867    if (p == NULL) {
868        return NO_INIT;
869    }
870
871    // now set data source
872    setDataSource_post(p, p->setDataSource(fd, offset, length));
873    return mStatus;
874}
875
876status_t MediaPlayerService::Client::setDataSource(
877        const sp<IStreamSource> &source) {
878    // create the right type of player
879    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
880    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
881    if (p == NULL) {
882        return NO_INIT;
883    }
884
885    // now set data source
886    setDataSource_post(p, p->setDataSource(source));
887    return mStatus;
888}
889
890status_t MediaPlayerService::Client::setDataSource(
891        const sp<IDataSource> &source) {
892    sp<DataSource> dataSource = DataSource::CreateFromIDataSource(source);
893    player_type playerType = MediaPlayerFactory::getPlayerType(this, dataSource);
894    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
895    if (p == NULL) {
896        return NO_INIT;
897    }
898    // now set data source
899    setDataSource_post(p, p->setDataSource(dataSource));
900    return mStatus;
901}
902
903void MediaPlayerService::Client::disconnectNativeWindow() {
904    if (mConnectedWindow != NULL) {
905        status_t err = nativeWindowDisconnect(
906                mConnectedWindow.get(), "disconnectNativeWindow");
907
908        if (err != OK) {
909            ALOGW("nativeWindowDisconnect returned an error: %s (%d)",
910                    strerror(-err), err);
911        }
912    }
913    mConnectedWindow.clear();
914}
915
916status_t MediaPlayerService::Client::setVideoSurfaceTexture(
917        const sp<IGraphicBufferProducer>& bufferProducer)
918{
919    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
920    sp<MediaPlayerBase> p = getPlayer();
921    if (p == 0) return UNKNOWN_ERROR;
922
923    sp<IBinder> binder(IInterface::asBinder(bufferProducer));
924    if (mConnectedWindowBinder == binder) {
925        return OK;
926    }
927
928    sp<ANativeWindow> anw;
929    if (bufferProducer != NULL) {
930        anw = new Surface(bufferProducer, true /* controlledByApp */);
931        status_t err = nativeWindowConnect(anw.get(), "setVideoSurfaceTexture");
932
933        if (err != OK) {
934            ALOGE("setVideoSurfaceTexture failed: %d", err);
935            // Note that we must do the reset before disconnecting from the ANW.
936            // Otherwise queue/dequeue calls could be made on the disconnected
937            // ANW, which may result in errors.
938            reset();
939
940            disconnectNativeWindow();
941
942            return err;
943        }
944    }
945
946    // Note that we must set the player's new GraphicBufferProducer before
947    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
948    // on the disconnected ANW, which may result in errors.
949    status_t err = p->setVideoSurfaceTexture(bufferProducer);
950
951    disconnectNativeWindow();
952
953    mConnectedWindow = anw;
954
955    if (err == OK) {
956        mConnectedWindowBinder = binder;
957    } else {
958        disconnectNativeWindow();
959    }
960
961    return err;
962}
963
964status_t MediaPlayerService::Client::invoke(const Parcel& request,
965                                            Parcel *reply)
966{
967    sp<MediaPlayerBase> p = getPlayer();
968    if (p == NULL) return UNKNOWN_ERROR;
969    return p->invoke(request, reply);
970}
971
972// This call doesn't need to access the native player.
973status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
974{
975    status_t status;
976    media::Metadata::Filter allow, drop;
977
978    if (unmarshallFilter(filter, &allow, &status) &&
979        unmarshallFilter(filter, &drop, &status)) {
980        Mutex::Autolock lock(mLock);
981
982        mMetadataAllow = allow;
983        mMetadataDrop = drop;
984    }
985    return status;
986}
987
988status_t MediaPlayerService::Client::getMetadata(
989        bool update_only, bool /*apply_filter*/, Parcel *reply)
990{
991    sp<MediaPlayerBase> player = getPlayer();
992    if (player == 0) return UNKNOWN_ERROR;
993
994    status_t status;
995    // Placeholder for the return code, updated by the caller.
996    reply->writeInt32(-1);
997
998    media::Metadata::Filter ids;
999
1000    // We don't block notifications while we fetch the data. We clear
1001    // mMetadataUpdated first so we don't lose notifications happening
1002    // during the rest of this call.
1003    {
1004        Mutex::Autolock lock(mLock);
1005        if (update_only) {
1006            ids = mMetadataUpdated;
1007        }
1008        mMetadataUpdated.clear();
1009    }
1010
1011    media::Metadata metadata(reply);
1012
1013    metadata.appendHeader();
1014    status = player->getMetadata(ids, reply);
1015
1016    if (status != OK) {
1017        metadata.resetParcel();
1018        ALOGE("getMetadata failed %d", status);
1019        return status;
1020    }
1021
1022    // FIXME: Implement filtering on the result. Not critical since
1023    // filtering takes place on the update notifications already. This
1024    // would be when all the metadata are fetch and a filter is set.
1025
1026    // Everything is fine, update the metadata length.
1027    metadata.updateLength();
1028    return OK;
1029}
1030
1031status_t MediaPlayerService::Client::setBufferingSettings(
1032        const BufferingSettings& buffering)
1033{
1034    ALOGV("[%d] setBufferingSettings{%s}",
1035            mConnId, buffering.toString().string());
1036    sp<MediaPlayerBase> p = getPlayer();
1037    if (p == 0) return UNKNOWN_ERROR;
1038    return p->setBufferingSettings(buffering);
1039}
1040
1041status_t MediaPlayerService::Client::getDefaultBufferingSettings(
1042        BufferingSettings* buffering /* nonnull */)
1043{
1044    sp<MediaPlayerBase> p = getPlayer();
1045    // TODO: create mPlayer on demand.
1046    if (p == 0) return UNKNOWN_ERROR;
1047    status_t ret = p->getDefaultBufferingSettings(buffering);
1048    if (ret == NO_ERROR) {
1049        ALOGV("[%d] getDefaultBufferingSettings{%s}",
1050                mConnId, buffering->toString().string());
1051    } else {
1052        ALOGV("[%d] getDefaultBufferingSettings returned %d", mConnId, ret);
1053    }
1054    return ret;
1055}
1056
1057status_t MediaPlayerService::Client::prepareAsync()
1058{
1059    ALOGV("[%d] prepareAsync", mConnId);
1060    sp<MediaPlayerBase> p = getPlayer();
1061    if (p == 0) return UNKNOWN_ERROR;
1062    status_t ret = p->prepareAsync();
1063#if CALLBACK_ANTAGONIZER
1064    ALOGD("start Antagonizer");
1065    if (ret == NO_ERROR) mAntagonizer->start();
1066#endif
1067    return ret;
1068}
1069
1070status_t MediaPlayerService::Client::start()
1071{
1072    ALOGV("[%d] start", mConnId);
1073    sp<MediaPlayerBase> p = getPlayer();
1074    if (p == 0) return UNKNOWN_ERROR;
1075    p->setLooping(mLoop);
1076    return p->start();
1077}
1078
1079status_t MediaPlayerService::Client::stop()
1080{
1081    ALOGV("[%d] stop", mConnId);
1082    sp<MediaPlayerBase> p = getPlayer();
1083    if (p == 0) return UNKNOWN_ERROR;
1084    return p->stop();
1085}
1086
1087status_t MediaPlayerService::Client::pause()
1088{
1089    ALOGV("[%d] pause", mConnId);
1090    sp<MediaPlayerBase> p = getPlayer();
1091    if (p == 0) return UNKNOWN_ERROR;
1092    return p->pause();
1093}
1094
1095status_t MediaPlayerService::Client::isPlaying(bool* state)
1096{
1097    *state = false;
1098    sp<MediaPlayerBase> p = getPlayer();
1099    if (p == 0) return UNKNOWN_ERROR;
1100    *state = p->isPlaying();
1101    ALOGV("[%d] isPlaying: %d", mConnId, *state);
1102    return NO_ERROR;
1103}
1104
1105status_t MediaPlayerService::Client::setPlaybackSettings(const AudioPlaybackRate& rate)
1106{
1107    ALOGV("[%d] setPlaybackSettings(%f, %f, %d, %d)",
1108            mConnId, rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
1109    sp<MediaPlayerBase> p = getPlayer();
1110    if (p == 0) return UNKNOWN_ERROR;
1111    return p->setPlaybackSettings(rate);
1112}
1113
1114status_t MediaPlayerService::Client::getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */)
1115{
1116    sp<MediaPlayerBase> p = getPlayer();
1117    if (p == 0) return UNKNOWN_ERROR;
1118    status_t ret = p->getPlaybackSettings(rate);
1119    if (ret == NO_ERROR) {
1120        ALOGV("[%d] getPlaybackSettings(%f, %f, %d, %d)",
1121                mConnId, rate->mSpeed, rate->mPitch, rate->mFallbackMode, rate->mStretchMode);
1122    } else {
1123        ALOGV("[%d] getPlaybackSettings returned %d", mConnId, ret);
1124    }
1125    return ret;
1126}
1127
1128status_t MediaPlayerService::Client::setSyncSettings(
1129        const AVSyncSettings& sync, float videoFpsHint)
1130{
1131    ALOGV("[%d] setSyncSettings(%u, %u, %f, %f)",
1132            mConnId, sync.mSource, sync.mAudioAdjustMode, sync.mTolerance, videoFpsHint);
1133    sp<MediaPlayerBase> p = getPlayer();
1134    if (p == 0) return UNKNOWN_ERROR;
1135    return p->setSyncSettings(sync, videoFpsHint);
1136}
1137
1138status_t MediaPlayerService::Client::getSyncSettings(
1139        AVSyncSettings* sync /* nonnull */, float* videoFps /* nonnull */)
1140{
1141    sp<MediaPlayerBase> p = getPlayer();
1142    if (p == 0) return UNKNOWN_ERROR;
1143    status_t ret = p->getSyncSettings(sync, videoFps);
1144    if (ret == NO_ERROR) {
1145        ALOGV("[%d] getSyncSettings(%u, %u, %f, %f)",
1146                mConnId, sync->mSource, sync->mAudioAdjustMode, sync->mTolerance, *videoFps);
1147    } else {
1148        ALOGV("[%d] getSyncSettings returned %d", mConnId, ret);
1149    }
1150    return ret;
1151}
1152
1153status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1154{
1155    ALOGV("getCurrentPosition");
1156    sp<MediaPlayerBase> p = getPlayer();
1157    if (p == 0) return UNKNOWN_ERROR;
1158    status_t ret = p->getCurrentPosition(msec);
1159    if (ret == NO_ERROR) {
1160        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1161    } else {
1162        ALOGE("getCurrentPosition returned %d", ret);
1163    }
1164    return ret;
1165}
1166
1167status_t MediaPlayerService::Client::getDuration(int *msec)
1168{
1169    ALOGV("getDuration");
1170    sp<MediaPlayerBase> p = getPlayer();
1171    if (p == 0) return UNKNOWN_ERROR;
1172    status_t ret = p->getDuration(msec);
1173    if (ret == NO_ERROR) {
1174        ALOGV("[%d] getDuration = %d", mConnId, *msec);
1175    } else {
1176        ALOGE("getDuration returned %d", ret);
1177    }
1178    return ret;
1179}
1180
1181status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1182    ALOGV("setNextPlayer");
1183    Mutex::Autolock l(mLock);
1184    sp<Client> c = static_cast<Client*>(player.get());
1185    if (c != NULL && !mService->hasClient(c)) {
1186      return BAD_VALUE;
1187    }
1188
1189    mNextClient = c;
1190
1191    if (c != NULL) {
1192        if (mAudioOutput != NULL) {
1193            mAudioOutput->setNextOutput(c->mAudioOutput);
1194        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1195            ALOGE("no current audio output");
1196        }
1197
1198        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1199            mPlayer->setNextPlayer(mNextClient->getPlayer());
1200        }
1201    }
1202
1203    return OK;
1204}
1205
1206VolumeShaper::Status MediaPlayerService::Client::applyVolumeShaper(
1207        const sp<VolumeShaper::Configuration>& configuration,
1208        const sp<VolumeShaper::Operation>& operation) {
1209    // for hardware output, call player instead
1210    ALOGV("Client::applyVolumeShaper(%p)", this);
1211    sp<MediaPlayerBase> p = getPlayer();
1212    {
1213        Mutex::Autolock l(mLock);
1214        if (p != 0 && p->hardwareOutput()) {
1215            // TODO: investigate internal implementation
1216            return VolumeShaper::Status(INVALID_OPERATION);
1217        }
1218        if (mAudioOutput.get() != nullptr) {
1219            return mAudioOutput->applyVolumeShaper(configuration, operation);
1220        }
1221    }
1222    return VolumeShaper::Status(INVALID_OPERATION);
1223}
1224
1225sp<VolumeShaper::State> MediaPlayerService::Client::getVolumeShaperState(int id) {
1226    // for hardware output, call player instead
1227    ALOGV("Client::getVolumeShaperState(%p)", this);
1228    sp<MediaPlayerBase> p = getPlayer();
1229    {
1230        Mutex::Autolock l(mLock);
1231        if (p != 0 && p->hardwareOutput()) {
1232            // TODO: investigate internal implementation.
1233            return nullptr;
1234        }
1235        if (mAudioOutput.get() != nullptr) {
1236            return mAudioOutput->getVolumeShaperState(id);
1237        }
1238    }
1239    return nullptr;
1240}
1241
1242status_t MediaPlayerService::Client::seekTo(int msec, MediaPlayerSeekMode mode)
1243{
1244    ALOGV("[%d] seekTo(%d, %d)", mConnId, msec, mode);
1245    sp<MediaPlayerBase> p = getPlayer();
1246    if (p == 0) return UNKNOWN_ERROR;
1247    return p->seekTo(msec, mode);
1248}
1249
1250status_t MediaPlayerService::Client::reset()
1251{
1252    ALOGV("[%d] reset", mConnId);
1253    mRetransmitEndpointValid = false;
1254    sp<MediaPlayerBase> p = getPlayer();
1255    if (p == 0) return UNKNOWN_ERROR;
1256    return p->reset();
1257}
1258
1259status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1260{
1261    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1262    // TODO: for hardware output, call player instead
1263    Mutex::Autolock l(mLock);
1264    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1265    return NO_ERROR;
1266}
1267
1268status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1269{
1270    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1271    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1272    if (mAudioAttributes == NULL) {
1273        return NO_MEMORY;
1274    }
1275    unmarshallAudioAttributes(parcel, mAudioAttributes);
1276
1277    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1278            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1279            mAudioAttributes->tags);
1280
1281    if (mAudioOutput != 0) {
1282        mAudioOutput->setAudioAttributes(mAudioAttributes);
1283    }
1284    return NO_ERROR;
1285}
1286
1287status_t MediaPlayerService::Client::setLooping(int loop)
1288{
1289    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1290    mLoop = loop;
1291    sp<MediaPlayerBase> p = getPlayer();
1292    if (p != 0) return p->setLooping(loop);
1293    return NO_ERROR;
1294}
1295
1296status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1297{
1298    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1299
1300    // for hardware output, call player instead
1301    sp<MediaPlayerBase> p = getPlayer();
1302    {
1303      Mutex::Autolock l(mLock);
1304      if (p != 0 && p->hardwareOutput()) {
1305          MediaPlayerHWInterface* hwp =
1306                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1307          return hwp->setVolume(leftVolume, rightVolume);
1308      } else {
1309          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1310          return NO_ERROR;
1311      }
1312    }
1313
1314    return NO_ERROR;
1315}
1316
1317status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1318{
1319    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1320    Mutex::Autolock l(mLock);
1321    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1322    return NO_ERROR;
1323}
1324
1325status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1326{
1327    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1328    Mutex::Autolock l(mLock);
1329    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1330    return NO_ERROR;
1331}
1332
1333status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1334    ALOGV("[%d] setParameter(%d)", mConnId, key);
1335    switch (key) {
1336    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1337    {
1338        Mutex::Autolock l(mLock);
1339        return setAudioAttributes_l(request);
1340    }
1341    default:
1342        sp<MediaPlayerBase> p = getPlayer();
1343        if (p == 0) { return UNKNOWN_ERROR; }
1344        return p->setParameter(key, request);
1345    }
1346}
1347
1348status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1349    ALOGV("[%d] getParameter(%d)", mConnId, key);
1350    sp<MediaPlayerBase> p = getPlayer();
1351    if (p == 0) return UNKNOWN_ERROR;
1352    return p->getParameter(key, reply);
1353}
1354
1355status_t MediaPlayerService::Client::setRetransmitEndpoint(
1356        const struct sockaddr_in* endpoint) {
1357
1358    if (NULL != endpoint) {
1359        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1360        uint16_t p = ntohs(endpoint->sin_port);
1361        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1362                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1363    } else {
1364        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1365    }
1366
1367    sp<MediaPlayerBase> p = getPlayer();
1368
1369    // Right now, the only valid time to set a retransmit endpoint is before
1370    // player selection has been made (since the presence or absence of a
1371    // retransmit endpoint is going to determine which player is selected during
1372    // setDataSource).
1373    if (p != 0) return INVALID_OPERATION;
1374
1375    if (NULL != endpoint) {
1376        mRetransmitEndpoint = *endpoint;
1377        mRetransmitEndpointValid = true;
1378    } else {
1379        mRetransmitEndpointValid = false;
1380    }
1381
1382    return NO_ERROR;
1383}
1384
1385status_t MediaPlayerService::Client::getRetransmitEndpoint(
1386        struct sockaddr_in* endpoint)
1387{
1388    if (NULL == endpoint)
1389        return BAD_VALUE;
1390
1391    sp<MediaPlayerBase> p = getPlayer();
1392
1393    if (p != NULL)
1394        return p->getRetransmitEndpoint(endpoint);
1395
1396    if (!mRetransmitEndpointValid)
1397        return NO_INIT;
1398
1399    *endpoint = mRetransmitEndpoint;
1400
1401    return NO_ERROR;
1402}
1403
1404void MediaPlayerService::Client::notify(
1405        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1406{
1407    Client* client = static_cast<Client*>(cookie);
1408    if (client == NULL) {
1409        return;
1410    }
1411
1412    sp<IMediaPlayerClient> c;
1413    sp<Client> nextClient;
1414    status_t errStartNext = NO_ERROR;
1415    {
1416        Mutex::Autolock l(client->mLock);
1417        c = client->mClient;
1418        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1419            nextClient = client->mNextClient;
1420
1421            if (client->mAudioOutput != NULL)
1422                client->mAudioOutput->switchToNextOutput();
1423
1424            errStartNext = nextClient->start();
1425        }
1426    }
1427
1428    if (nextClient != NULL) {
1429        sp<IMediaPlayerClient> nc;
1430        {
1431            Mutex::Autolock l(nextClient->mLock);
1432            nc = nextClient->mClient;
1433        }
1434        if (nc != NULL) {
1435            if (errStartNext == NO_ERROR) {
1436                nc->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1437            } else {
1438                nc->notify(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN , 0, obj);
1439                ALOGE("gapless:start playback for next track failed, err(%d)", errStartNext);
1440            }
1441        }
1442    }
1443
1444    if (MEDIA_INFO == msg &&
1445        MEDIA_INFO_METADATA_UPDATE == ext1) {
1446        const media::Metadata::Type metadata_type = ext2;
1447
1448        if(client->shouldDropMetadata(metadata_type)) {
1449            return;
1450        }
1451
1452        // Update the list of metadata that have changed. getMetadata
1453        // also access mMetadataUpdated and clears it.
1454        client->addNewMetadataUpdate(metadata_type);
1455    }
1456
1457    if (c != NULL) {
1458        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1459        c->notify(msg, ext1, ext2, obj);
1460    }
1461}
1462
1463
1464bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1465{
1466    Mutex::Autolock lock(mLock);
1467
1468    if (findMetadata(mMetadataDrop, code)) {
1469        return true;
1470    }
1471
1472    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1473        return false;
1474    } else {
1475        return true;
1476    }
1477}
1478
1479
1480void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1481    Mutex::Autolock lock(mLock);
1482    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1483        mMetadataUpdated.add(metadata_type);
1484    }
1485}
1486
1487// Modular DRM
1488status_t MediaPlayerService::Client::prepareDrm(const uint8_t uuid[16],
1489        const Vector<uint8_t>& drmSessionId)
1490{
1491    ALOGV("[%d] prepareDrm", mConnId);
1492    sp<MediaPlayerBase> p = getPlayer();
1493    if (p == 0) return UNKNOWN_ERROR;
1494
1495    status_t ret = p->prepareDrm(uuid, drmSessionId);
1496    ALOGV("prepareDrm ret: %d", ret);
1497
1498    return ret;
1499}
1500
1501status_t MediaPlayerService::Client::releaseDrm()
1502{
1503    ALOGV("[%d] releaseDrm", mConnId);
1504    sp<MediaPlayerBase> p = getPlayer();
1505    if (p == 0) return UNKNOWN_ERROR;
1506
1507    status_t ret = p->releaseDrm();
1508    ALOGV("releaseDrm ret: %d", ret);
1509
1510    return ret;
1511}
1512
1513#if CALLBACK_ANTAGONIZER
1514const int Antagonizer::interval = 10000; // 10 msecs
1515
1516Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1517    mExit(false), mActive(false), mClient(client), mCb(cb)
1518{
1519    createThread(callbackThread, this);
1520}
1521
1522void Antagonizer::kill()
1523{
1524    Mutex::Autolock _l(mLock);
1525    mActive = false;
1526    mExit = true;
1527    mCondition.wait(mLock);
1528}
1529
1530int Antagonizer::callbackThread(void* user)
1531{
1532    ALOGD("Antagonizer started");
1533    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1534    while (!p->mExit) {
1535        if (p->mActive) {
1536            ALOGV("send event");
1537            p->mCb(p->mClient, 0, 0, 0);
1538        }
1539        usleep(interval);
1540    }
1541    Mutex::Autolock _l(p->mLock);
1542    p->mCondition.signal();
1543    ALOGD("Antagonizer stopped");
1544    return 0;
1545}
1546#endif
1547
1548#undef LOG_TAG
1549#define LOG_TAG "AudioSink"
1550MediaPlayerService::AudioOutput::AudioOutput(audio_session_t sessionId, uid_t uid, int pid,
1551        const audio_attributes_t* attr)
1552    : mCallback(NULL),
1553      mCallbackCookie(NULL),
1554      mCallbackData(NULL),
1555      mStreamType(AUDIO_STREAM_MUSIC),
1556      mLeftVolume(1.0),
1557      mRightVolume(1.0),
1558      mPlaybackRate(AUDIO_PLAYBACK_RATE_DEFAULT),
1559      mSampleRateHz(0),
1560      mMsecsPerFrame(0),
1561      mFrameSize(0),
1562      mSessionId(sessionId),
1563      mUid(uid),
1564      mPid(pid),
1565      mSendLevel(0.0),
1566      mAuxEffectId(0),
1567      mFlags(AUDIO_OUTPUT_FLAG_NONE),
1568      mVolumeHandler(new VolumeHandler())
1569{
1570    ALOGV("AudioOutput(%d)", sessionId);
1571    if (attr != NULL) {
1572        mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1573        if (mAttributes != NULL) {
1574            memcpy(mAttributes, attr, sizeof(audio_attributes_t));
1575            mStreamType = audio_attributes_to_stream_type(attr);
1576        }
1577    } else {
1578        mAttributes = NULL;
1579    }
1580
1581    setMinBufferCount();
1582}
1583
1584MediaPlayerService::AudioOutput::~AudioOutput()
1585{
1586    close();
1587    free(mAttributes);
1588    delete mCallbackData;
1589}
1590
1591//static
1592void MediaPlayerService::AudioOutput::setMinBufferCount()
1593{
1594    char value[PROPERTY_VALUE_MAX];
1595    if (property_get("ro.kernel.qemu", value, 0)) {
1596        mIsOnEmulator = true;
1597        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1598    }
1599}
1600
1601// static
1602bool MediaPlayerService::AudioOutput::isOnEmulator()
1603{
1604    setMinBufferCount(); // benign race wrt other threads
1605    return mIsOnEmulator;
1606}
1607
1608// static
1609int MediaPlayerService::AudioOutput::getMinBufferCount()
1610{
1611    setMinBufferCount(); // benign race wrt other threads
1612    return mMinBufferCount;
1613}
1614
1615ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1616{
1617    Mutex::Autolock lock(mLock);
1618    if (mTrack == 0) return NO_INIT;
1619    return mTrack->frameCount() * mFrameSize;
1620}
1621
1622ssize_t MediaPlayerService::AudioOutput::frameCount() const
1623{
1624    Mutex::Autolock lock(mLock);
1625    if (mTrack == 0) return NO_INIT;
1626    return mTrack->frameCount();
1627}
1628
1629ssize_t MediaPlayerService::AudioOutput::channelCount() const
1630{
1631    Mutex::Autolock lock(mLock);
1632    if (mTrack == 0) return NO_INIT;
1633    return mTrack->channelCount();
1634}
1635
1636ssize_t MediaPlayerService::AudioOutput::frameSize() const
1637{
1638    Mutex::Autolock lock(mLock);
1639    if (mTrack == 0) return NO_INIT;
1640    return mFrameSize;
1641}
1642
1643uint32_t MediaPlayerService::AudioOutput::latency () const
1644{
1645    Mutex::Autolock lock(mLock);
1646    if (mTrack == 0) return 0;
1647    return mTrack->latency();
1648}
1649
1650float MediaPlayerService::AudioOutput::msecsPerFrame() const
1651{
1652    Mutex::Autolock lock(mLock);
1653    return mMsecsPerFrame;
1654}
1655
1656status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1657{
1658    Mutex::Autolock lock(mLock);
1659    if (mTrack == 0) return NO_INIT;
1660    return mTrack->getPosition(position);
1661}
1662
1663status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1664{
1665    Mutex::Autolock lock(mLock);
1666    if (mTrack == 0) return NO_INIT;
1667    return mTrack->getTimestamp(ts);
1668}
1669
1670// TODO: Remove unnecessary calls to getPlayedOutDurationUs()
1671// as it acquires locks and may query the audio driver.
1672//
1673// Some calls could conceivably retrieve extrapolated data instead of
1674// accessing getTimestamp() or getPosition() every time a data buffer with
1675// a media time is received.
1676//
1677// Calculate duration of played samples if played at normal rate (i.e., 1.0).
1678int64_t MediaPlayerService::AudioOutput::getPlayedOutDurationUs(int64_t nowUs) const
1679{
1680    Mutex::Autolock lock(mLock);
1681    if (mTrack == 0 || mSampleRateHz == 0) {
1682        return 0;
1683    }
1684
1685    uint32_t numFramesPlayed;
1686    int64_t numFramesPlayedAtUs;
1687    AudioTimestamp ts;
1688
1689    status_t res = mTrack->getTimestamp(ts);
1690    if (res == OK) {                 // case 1: mixing audio tracks and offloaded tracks.
1691        numFramesPlayed = ts.mPosition;
1692        numFramesPlayedAtUs = ts.mTime.tv_sec * 1000000LL + ts.mTime.tv_nsec / 1000;
1693        //ALOGD("getTimestamp: OK %d %lld", numFramesPlayed, (long long)numFramesPlayedAtUs);
1694    } else if (res == WOULD_BLOCK) { // case 2: transitory state on start of a new track
1695        numFramesPlayed = 0;
1696        numFramesPlayedAtUs = nowUs;
1697        //ALOGD("getTimestamp: WOULD_BLOCK %d %lld",
1698        //        numFramesPlayed, (long long)numFramesPlayedAtUs);
1699    } else {                         // case 3: transitory at new track or audio fast tracks.
1700        res = mTrack->getPosition(&numFramesPlayed);
1701        CHECK_EQ(res, (status_t)OK);
1702        numFramesPlayedAtUs = nowUs;
1703        numFramesPlayedAtUs += 1000LL * mTrack->latency() / 2; /* XXX */
1704        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAtUs);
1705    }
1706
1707    // CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
1708    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
1709    int64_t durationUs = (int64_t)((int32_t)numFramesPlayed * 1000000LL / mSampleRateHz)
1710            + nowUs - numFramesPlayedAtUs;
1711    if (durationUs < 0) {
1712        // Occurs when numFramesPlayed position is very small and the following:
1713        // (1) In case 1, the time nowUs is computed before getTimestamp() is called and
1714        //     numFramesPlayedAtUs is greater than nowUs by time more than numFramesPlayed.
1715        // (2) In case 3, using getPosition and adding mAudioSink->latency() to
1716        //     numFramesPlayedAtUs, by a time amount greater than numFramesPlayed.
1717        //
1718        // Both of these are transitory conditions.
1719        ALOGV("getPlayedOutDurationUs: negative duration %lld set to zero", (long long)durationUs);
1720        durationUs = 0;
1721    }
1722    ALOGV("getPlayedOutDurationUs(%lld) nowUs(%lld) frames(%u) framesAt(%lld)",
1723            (long long)durationUs, (long long)nowUs,
1724            numFramesPlayed, (long long)numFramesPlayedAtUs);
1725    return durationUs;
1726}
1727
1728status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1729{
1730    Mutex::Autolock lock(mLock);
1731    if (mTrack == 0) return NO_INIT;
1732    ExtendedTimestamp ets;
1733    status_t status = mTrack->getTimestamp(&ets);
1734    if (status == OK || status == WOULD_BLOCK) {
1735        *frameswritten = (uint32_t)ets.mPosition[ExtendedTimestamp::LOCATION_CLIENT];
1736    }
1737    return status;
1738}
1739
1740status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1741{
1742    Mutex::Autolock lock(mLock);
1743    if (mTrack == 0) return NO_INIT;
1744    return mTrack->setParameters(keyValuePairs);
1745}
1746
1747String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1748{
1749    Mutex::Autolock lock(mLock);
1750    if (mTrack == 0) return String8::empty();
1751    return mTrack->getParameters(keys);
1752}
1753
1754void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1755    Mutex::Autolock lock(mLock);
1756    if (attributes == NULL) {
1757        free(mAttributes);
1758        mAttributes = NULL;
1759    } else {
1760        if (mAttributes == NULL) {
1761            mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1762        }
1763        memcpy(mAttributes, attributes, sizeof(audio_attributes_t));
1764        mStreamType = audio_attributes_to_stream_type(attributes);
1765    }
1766}
1767
1768void MediaPlayerService::AudioOutput::setAudioStreamType(audio_stream_type_t streamType)
1769{
1770    Mutex::Autolock lock(mLock);
1771    // do not allow direct stream type modification if attributes have been set
1772    if (mAttributes == NULL) {
1773        mStreamType = streamType;
1774    }
1775}
1776
1777void MediaPlayerService::AudioOutput::deleteRecycledTrack_l()
1778{
1779    ALOGV("deleteRecycledTrack_l");
1780    if (mRecycledTrack != 0) {
1781
1782        if (mCallbackData != NULL) {
1783            mCallbackData->setOutput(NULL);
1784            mCallbackData->endTrackSwitch();
1785        }
1786
1787        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1788            int32_t msec = 0;
1789            if (!mRecycledTrack->stopped()) { // check if active
1790                 (void)mRecycledTrack->pendingDuration(&msec);
1791            }
1792            mRecycledTrack->stop(); // ensure full data drain
1793            ALOGD("deleting recycled track, waiting for data drain (%d msec)", msec);
1794            if (msec > 0) {
1795                static const int32_t WAIT_LIMIT_MS = 3000;
1796                if (msec > WAIT_LIMIT_MS) {
1797                    msec = WAIT_LIMIT_MS;
1798                }
1799                usleep(msec * 1000LL);
1800            }
1801        }
1802        // An offloaded track isn't flushed because the STREAM_END is reported
1803        // slightly prematurely to allow time for the gapless track switch
1804        // but this means that if we decide not to recycle the track there
1805        // could be a small amount of residual data still playing. We leave
1806        // AudioFlinger to drain the track.
1807
1808        mRecycledTrack.clear();
1809        close_l();
1810        delete mCallbackData;
1811        mCallbackData = NULL;
1812    }
1813}
1814
1815void MediaPlayerService::AudioOutput::close_l()
1816{
1817    mTrack.clear();
1818}
1819
1820status_t MediaPlayerService::AudioOutput::open(
1821        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1822        audio_format_t format, int bufferCount,
1823        AudioCallback cb, void *cookie,
1824        audio_output_flags_t flags,
1825        const audio_offload_info_t *offloadInfo,
1826        bool doNotReconnect,
1827        uint32_t suggestedFrameCount)
1828{
1829    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1830                format, bufferCount, mSessionId, flags);
1831
1832    // offloading is only supported in callback mode for now.
1833    // offloadInfo must be present if offload flag is set
1834    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1835            ((cb == NULL) || (offloadInfo == NULL))) {
1836        return BAD_VALUE;
1837    }
1838
1839    // compute frame count for the AudioTrack internal buffer
1840    size_t frameCount;
1841    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1842        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1843    } else {
1844        // try to estimate the buffer processing fetch size from AudioFlinger.
1845        // framesPerBuffer is approximate and generally correct, except when it's not :-).
1846        uint32_t afSampleRate;
1847        size_t afFrameCount;
1848        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1849            return NO_INIT;
1850        }
1851        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1852            return NO_INIT;
1853        }
1854        const size_t framesPerBuffer =
1855                (unsigned long long)sampleRate * afFrameCount / afSampleRate;
1856
1857        if (bufferCount == 0) {
1858            // use suggestedFrameCount
1859            bufferCount = (suggestedFrameCount + framesPerBuffer - 1) / framesPerBuffer;
1860        }
1861        // Check argument bufferCount against the mininum buffer count
1862        if (bufferCount != 0 && bufferCount < mMinBufferCount) {
1863            ALOGV("bufferCount (%d) increased to %d", bufferCount, mMinBufferCount);
1864            bufferCount = mMinBufferCount;
1865        }
1866        // if frameCount is 0, then AudioTrack will get frame count from AudioFlinger
1867        // which will be the minimum size permitted.
1868        frameCount = bufferCount * framesPerBuffer;
1869    }
1870
1871    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1872        channelMask = audio_channel_out_mask_from_count(channelCount);
1873        if (0 == channelMask) {
1874            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1875            return NO_INIT;
1876        }
1877    }
1878
1879    Mutex::Autolock lock(mLock);
1880    mCallback = cb;
1881    mCallbackCookie = cookie;
1882
1883    // Check whether we can recycle the track
1884    bool reuse = false;
1885    bool bothOffloaded = false;
1886
1887    if (mRecycledTrack != 0) {
1888        // check whether we are switching between two offloaded tracks
1889        bothOffloaded = (flags & mRecycledTrack->getFlags()
1890                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1891
1892        // check if the existing track can be reused as-is, or if a new track needs to be created.
1893        reuse = true;
1894
1895        if ((mCallbackData == NULL && mCallback != NULL) ||
1896                (mCallbackData != NULL && mCallback == NULL)) {
1897            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1898            ALOGV("can't chain callback and write");
1899            reuse = false;
1900        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1901                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1902            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1903                  mRecycledTrack->getSampleRate(), sampleRate,
1904                  mRecycledTrack->channelCount(), channelCount);
1905            reuse = false;
1906        } else if (flags != mFlags) {
1907            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1908            reuse = false;
1909        } else if (mRecycledTrack->format() != format) {
1910            reuse = false;
1911        }
1912    } else {
1913        ALOGV("no track available to recycle");
1914    }
1915
1916    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1917
1918    // If we can't recycle and both tracks are offloaded
1919    // we must close the previous output before opening a new one
1920    if (bothOffloaded && !reuse) {
1921        ALOGV("both offloaded and not recycling");
1922        deleteRecycledTrack_l();
1923    }
1924
1925    sp<AudioTrack> t;
1926    CallbackData *newcbd = NULL;
1927
1928    // We don't attempt to create a new track if we are recycling an
1929    // offloaded track. But, if we are recycling a non-offloaded or we
1930    // are switching where one is offloaded and one isn't then we create
1931    // the new track in advance so that we can read additional stream info
1932
1933    if (!(reuse && bothOffloaded)) {
1934        ALOGV("creating new AudioTrack");
1935
1936        if (mCallback != NULL) {
1937            newcbd = new CallbackData(this);
1938            t = new AudioTrack(
1939                    mStreamType,
1940                    sampleRate,
1941                    format,
1942                    channelMask,
1943                    frameCount,
1944                    flags,
1945                    CallbackWrapper,
1946                    newcbd,
1947                    0,  // notification frames
1948                    mSessionId,
1949                    AudioTrack::TRANSFER_CALLBACK,
1950                    offloadInfo,
1951                    mUid,
1952                    mPid,
1953                    mAttributes,
1954                    doNotReconnect);
1955        } else {
1956            // TODO: Due to buffer memory concerns, we use a max target playback speed
1957            // based on mPlaybackRate at the time of open (instead of kMaxRequiredSpeed),
1958            // also clamping the target speed to 1.0 <= targetSpeed <= kMaxRequiredSpeed.
1959            const float targetSpeed =
1960                    std::min(std::max(mPlaybackRate.mSpeed, 1.0f), kMaxRequiredSpeed);
1961            ALOGW_IF(targetSpeed != mPlaybackRate.mSpeed,
1962                    "track target speed:%f clamped from playback speed:%f",
1963                    targetSpeed, mPlaybackRate.mSpeed);
1964            t = new AudioTrack(
1965                    mStreamType,
1966                    sampleRate,
1967                    format,
1968                    channelMask,
1969                    frameCount,
1970                    flags,
1971                    NULL, // callback
1972                    NULL, // user data
1973                    0, // notification frames
1974                    mSessionId,
1975                    AudioTrack::TRANSFER_DEFAULT,
1976                    NULL, // offload info
1977                    mUid,
1978                    mPid,
1979                    mAttributes,
1980                    doNotReconnect,
1981                    targetSpeed);
1982        }
1983
1984        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1985            ALOGE("Unable to create audio track");
1986            delete newcbd;
1987            // t goes out of scope, so reference count drops to zero
1988            return NO_INIT;
1989        } else {
1990            // successful AudioTrack initialization implies a legacy stream type was generated
1991            // from the audio attributes
1992            mStreamType = t->streamType();
1993        }
1994    }
1995
1996    if (reuse) {
1997        CHECK(mRecycledTrack != NULL);
1998
1999        if (!bothOffloaded) {
2000            if (mRecycledTrack->frameCount() != t->frameCount()) {
2001                ALOGV("framecount differs: %zu/%zu frames",
2002                      mRecycledTrack->frameCount(), t->frameCount());
2003                reuse = false;
2004            }
2005        }
2006
2007        if (reuse) {
2008            ALOGV("chaining to next output and recycling track");
2009            close_l();
2010            mTrack = mRecycledTrack;
2011            mRecycledTrack.clear();
2012            if (mCallbackData != NULL) {
2013                mCallbackData->setOutput(this);
2014            }
2015            delete newcbd;
2016            return updateTrack();
2017        }
2018    }
2019
2020    // we're not going to reuse the track, unblock and flush it
2021    // this was done earlier if both tracks are offloaded
2022    if (!bothOffloaded) {
2023        deleteRecycledTrack_l();
2024    }
2025
2026    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
2027
2028    mCallbackData = newcbd;
2029    ALOGV("setVolume");
2030    t->setVolume(mLeftVolume, mRightVolume);
2031
2032    // Restore VolumeShapers for the MediaPlayer in case the track was recreated
2033    // due to an output sink error (e.g. offload to non-offload switch).
2034    mVolumeHandler->forall([&t](const VolumeShaper &shaper) -> VolumeShaper::Status {
2035        sp<VolumeShaper::Operation> operationToEnd =
2036                new VolumeShaper::Operation(shaper.mOperation);
2037        // TODO: Ideally we would restore to the exact xOffset position
2038        // as returned by getVolumeShaperState(), but we don't have that
2039        // information when restoring at the client unless we periodically poll
2040        // the server or create shared memory state.
2041        //
2042        // For now, we simply advance to the end of the VolumeShaper effect
2043        // if it has been started.
2044        if (shaper.isStarted()) {
2045            operationToEnd->setXOffset(1.f);
2046        }
2047        return t->applyVolumeShaper(shaper.mConfiguration, operationToEnd);
2048    });
2049
2050    mSampleRateHz = sampleRate;
2051    mFlags = flags;
2052    mMsecsPerFrame = 1E3f / (mPlaybackRate.mSpeed * sampleRate);
2053    mFrameSize = t->frameSize();
2054    mTrack = t;
2055
2056    return updateTrack();
2057}
2058
2059status_t MediaPlayerService::AudioOutput::updateTrack() {
2060    if (mTrack == NULL) {
2061        return NO_ERROR;
2062    }
2063
2064    status_t res = NO_ERROR;
2065    // Note some output devices may give us a direct track even though we don't specify it.
2066    // Example: Line application b/17459982.
2067    if ((mTrack->getFlags()
2068            & (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD | AUDIO_OUTPUT_FLAG_DIRECT)) == 0) {
2069        res = mTrack->setPlaybackRate(mPlaybackRate);
2070        if (res == NO_ERROR) {
2071            mTrack->setAuxEffectSendLevel(mSendLevel);
2072            res = mTrack->attachAuxEffect(mAuxEffectId);
2073        }
2074    }
2075    ALOGV("updateTrack() DONE status %d", res);
2076    return res;
2077}
2078
2079status_t MediaPlayerService::AudioOutput::start()
2080{
2081    ALOGV("start");
2082    Mutex::Autolock lock(mLock);
2083    if (mCallbackData != NULL) {
2084        mCallbackData->endTrackSwitch();
2085    }
2086    if (mTrack != 0) {
2087        mTrack->setVolume(mLeftVolume, mRightVolume);
2088        mTrack->setAuxEffectSendLevel(mSendLevel);
2089        status_t status = mTrack->start();
2090        if (status == NO_ERROR) {
2091            mVolumeHandler->setStarted();
2092        }
2093        return status;
2094    }
2095    return NO_INIT;
2096}
2097
2098void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
2099    Mutex::Autolock lock(mLock);
2100    mNextOutput = nextOutput;
2101}
2102
2103void MediaPlayerService::AudioOutput::switchToNextOutput() {
2104    ALOGV("switchToNextOutput");
2105
2106    // Try to acquire the callback lock before moving track (without incurring deadlock).
2107    const unsigned kMaxSwitchTries = 100;
2108    Mutex::Autolock lock(mLock);
2109    for (unsigned tries = 0;;) {
2110        if (mTrack == 0) {
2111            return;
2112        }
2113        if (mNextOutput != NULL && mNextOutput != this) {
2114            if (mCallbackData != NULL) {
2115                // two alternative approaches
2116#if 1
2117                CallbackData *callbackData = mCallbackData;
2118                mLock.unlock();
2119                // proper acquisition sequence
2120                callbackData->lock();
2121                mLock.lock();
2122                // Caution: it is unlikely that someone deleted our callback or changed our target
2123                if (callbackData != mCallbackData || mNextOutput == NULL || mNextOutput == this) {
2124                    // fatal if we are starved out.
2125                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
2126                            "switchToNextOutput() cannot obtain correct lock sequence");
2127                    callbackData->unlock();
2128                    continue;
2129                }
2130                callbackData->mSwitching = true; // begin track switch
2131                callbackData->setOutput(NULL);
2132#else
2133                // tryBeginTrackSwitch() returns false if the callback has the lock.
2134                if (!mCallbackData->tryBeginTrackSwitch()) {
2135                    // fatal if we are starved out.
2136                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
2137                            "switchToNextOutput() cannot obtain callback lock");
2138                    mLock.unlock();
2139                    usleep(5 * 1000 /* usec */); // allow callback to use AudioOutput
2140                    mLock.lock();
2141                    continue;
2142                }
2143#endif
2144            }
2145
2146            Mutex::Autolock nextLock(mNextOutput->mLock);
2147
2148            // If the next output track is not NULL, then it has been
2149            // opened already for playback.
2150            // This is possible even without the next player being started,
2151            // for example, the next player could be prepared and seeked.
2152            //
2153            // Presuming it isn't advisable to force the track over.
2154             if (mNextOutput->mTrack == NULL) {
2155                ALOGD("Recycling track for gapless playback");
2156                delete mNextOutput->mCallbackData;
2157                mNextOutput->mCallbackData = mCallbackData;
2158                mNextOutput->mRecycledTrack = mTrack;
2159                mNextOutput->mSampleRateHz = mSampleRateHz;
2160                mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
2161                mNextOutput->mFlags = mFlags;
2162                mNextOutput->mFrameSize = mFrameSize;
2163                close_l();
2164                mCallbackData = NULL;  // destruction handled by mNextOutput
2165            } else {
2166                ALOGW("Ignoring gapless playback because next player has already started");
2167                // remove track in case resource needed for future players.
2168                if (mCallbackData != NULL) {
2169                    mCallbackData->endTrackSwitch();  // release lock for callbacks before close.
2170                }
2171                close_l();
2172            }
2173        }
2174        break;
2175    }
2176}
2177
2178ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size, bool blocking)
2179{
2180    Mutex::Autolock lock(mLock);
2181    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
2182
2183    //ALOGV("write(%p, %u)", buffer, size);
2184    if (mTrack != 0) {
2185        return mTrack->write(buffer, size, blocking);
2186    }
2187    return NO_INIT;
2188}
2189
2190void MediaPlayerService::AudioOutput::stop()
2191{
2192    ALOGV("stop");
2193    Mutex::Autolock lock(mLock);
2194    if (mTrack != 0) mTrack->stop();
2195}
2196
2197void MediaPlayerService::AudioOutput::flush()
2198{
2199    ALOGV("flush");
2200    Mutex::Autolock lock(mLock);
2201    if (mTrack != 0) mTrack->flush();
2202}
2203
2204void MediaPlayerService::AudioOutput::pause()
2205{
2206    ALOGV("pause");
2207    Mutex::Autolock lock(mLock);
2208    if (mTrack != 0) mTrack->pause();
2209}
2210
2211void MediaPlayerService::AudioOutput::close()
2212{
2213    ALOGV("close");
2214    sp<AudioTrack> track;
2215    {
2216        Mutex::Autolock lock(mLock);
2217        track = mTrack;
2218        close_l(); // clears mTrack
2219    }
2220    // destruction of the track occurs outside of mutex.
2221}
2222
2223void MediaPlayerService::AudioOutput::setVolume(float left, float right)
2224{
2225    ALOGV("setVolume(%f, %f)", left, right);
2226    Mutex::Autolock lock(mLock);
2227    mLeftVolume = left;
2228    mRightVolume = right;
2229    if (mTrack != 0) {
2230        mTrack->setVolume(left, right);
2231    }
2232}
2233
2234status_t MediaPlayerService::AudioOutput::setPlaybackRate(const AudioPlaybackRate &rate)
2235{
2236    ALOGV("setPlaybackRate(%f %f %d %d)",
2237                rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
2238    Mutex::Autolock lock(mLock);
2239    if (mTrack == 0) {
2240        // remember rate so that we can set it when the track is opened
2241        mPlaybackRate = rate;
2242        return OK;
2243    }
2244    status_t res = mTrack->setPlaybackRate(rate);
2245    if (res != NO_ERROR) {
2246        return res;
2247    }
2248    // rate.mSpeed is always greater than 0 if setPlaybackRate succeeded
2249    CHECK_GT(rate.mSpeed, 0.f);
2250    mPlaybackRate = rate;
2251    if (mSampleRateHz != 0) {
2252        mMsecsPerFrame = 1E3f / (rate.mSpeed * mSampleRateHz);
2253    }
2254    return res;
2255}
2256
2257status_t MediaPlayerService::AudioOutput::getPlaybackRate(AudioPlaybackRate *rate)
2258{
2259    ALOGV("setPlaybackRate");
2260    Mutex::Autolock lock(mLock);
2261    if (mTrack == 0) {
2262        return NO_INIT;
2263    }
2264    *rate = mTrack->getPlaybackRate();
2265    return NO_ERROR;
2266}
2267
2268status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
2269{
2270    ALOGV("setAuxEffectSendLevel(%f)", level);
2271    Mutex::Autolock lock(mLock);
2272    mSendLevel = level;
2273    if (mTrack != 0) {
2274        return mTrack->setAuxEffectSendLevel(level);
2275    }
2276    return NO_ERROR;
2277}
2278
2279status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
2280{
2281    ALOGV("attachAuxEffect(%d)", effectId);
2282    Mutex::Autolock lock(mLock);
2283    mAuxEffectId = effectId;
2284    if (mTrack != 0) {
2285        return mTrack->attachAuxEffect(effectId);
2286    }
2287    return NO_ERROR;
2288}
2289
2290VolumeShaper::Status MediaPlayerService::AudioOutput::applyVolumeShaper(
2291                const sp<VolumeShaper::Configuration>& configuration,
2292                const sp<VolumeShaper::Operation>& operation)
2293{
2294    Mutex::Autolock lock(mLock);
2295    ALOGV("AudioOutput::applyVolumeShaper");
2296
2297    mVolumeHandler->setIdIfNecessary(configuration);
2298
2299    VolumeShaper::Status status;
2300    if (mTrack != 0) {
2301        status = mTrack->applyVolumeShaper(configuration, operation);
2302        if (status >= 0) {
2303            (void)mVolumeHandler->applyVolumeShaper(configuration, operation);
2304            // TODO: start on exact AudioTrack state (STATE_ACTIVE || STATE_STOPPING)
2305            mVolumeHandler->setStarted();
2306        }
2307    } else {
2308        status = mVolumeHandler->applyVolumeShaper(configuration, operation);
2309    }
2310    return status;
2311}
2312
2313sp<VolumeShaper::State> MediaPlayerService::AudioOutput::getVolumeShaperState(int id)
2314{
2315    Mutex::Autolock lock(mLock);
2316    if (mTrack != 0) {
2317        return mTrack->getVolumeShaperState(id);
2318    } else {
2319        return mVolumeHandler->getVolumeShaperState(id);
2320    }
2321}
2322
2323// static
2324void MediaPlayerService::AudioOutput::CallbackWrapper(
2325        int event, void *cookie, void *info) {
2326    //ALOGV("callbackwrapper");
2327    CallbackData *data = (CallbackData*)cookie;
2328    // lock to ensure we aren't caught in the middle of a track switch.
2329    data->lock();
2330    AudioOutput *me = data->getOutput();
2331    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
2332    if (me == NULL) {
2333        // no output set, likely because the track was scheduled to be reused
2334        // by another player, but the format turned out to be incompatible.
2335        data->unlock();
2336        if (buffer != NULL) {
2337            buffer->size = 0;
2338        }
2339        return;
2340    }
2341
2342    switch(event) {
2343    case AudioTrack::EVENT_MORE_DATA: {
2344        size_t actualSize = (*me->mCallback)(
2345                me, buffer->raw, buffer->size, me->mCallbackCookie,
2346                CB_EVENT_FILL_BUFFER);
2347
2348        // Log when no data is returned from the callback.
2349        // (1) We may have no data (especially with network streaming sources).
2350        // (2) We may have reached the EOS and the audio track is not stopped yet.
2351        // Note that AwesomePlayer/AudioPlayer will only return zero size when it reaches the EOS.
2352        // NuPlayerRenderer will return zero when it doesn't have data (it doesn't block to fill).
2353        //
2354        // This is a benign busy-wait, with the next data request generated 10 ms or more later;
2355        // nevertheless for power reasons, we don't want to see too many of these.
2356
2357        ALOGV_IF(actualSize == 0 && buffer->size > 0, "callbackwrapper: empty buffer returned");
2358
2359        buffer->size = actualSize;
2360        } break;
2361
2362    case AudioTrack::EVENT_STREAM_END:
2363        // currently only occurs for offloaded callbacks
2364        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
2365        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
2366                me->mCallbackCookie, CB_EVENT_STREAM_END);
2367        break;
2368
2369    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
2370        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
2371        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
2372                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
2373        break;
2374
2375    case AudioTrack::EVENT_UNDERRUN:
2376        // This occurs when there is no data available, typically
2377        // when there is a failure to supply data to the AudioTrack.  It can also
2378        // occur in non-offloaded mode when the audio device comes out of standby.
2379        //
2380        // If an AudioTrack underruns it outputs silence. Since this happens suddenly
2381        // it may sound like an audible pop or glitch.
2382        //
2383        // The underrun event is sent once per track underrun; the condition is reset
2384        // when more data is sent to the AudioTrack.
2385        ALOGD("callbackwrapper: EVENT_UNDERRUN (discarded)");
2386        break;
2387
2388    default:
2389        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
2390    }
2391
2392    data->unlock();
2393}
2394
2395audio_session_t MediaPlayerService::AudioOutput::getSessionId() const
2396{
2397    Mutex::Autolock lock(mLock);
2398    return mSessionId;
2399}
2400
2401uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
2402{
2403    Mutex::Autolock lock(mLock);
2404    if (mTrack == 0) return 0;
2405    return mTrack->getSampleRate();
2406}
2407
2408int64_t MediaPlayerService::AudioOutput::getBufferDurationInUs() const
2409{
2410    Mutex::Autolock lock(mLock);
2411    if (mTrack == 0) {
2412        return 0;
2413    }
2414    int64_t duration;
2415    if (mTrack->getBufferDurationInUs(&duration) != OK) {
2416        return 0;
2417    }
2418    return duration;
2419}
2420
2421////////////////////////////////////////////////////////////////////////////////
2422
2423struct CallbackThread : public Thread {
2424    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
2425                   MediaPlayerBase::AudioSink::AudioCallback cb,
2426                   void *cookie);
2427
2428protected:
2429    virtual ~CallbackThread();
2430
2431    virtual bool threadLoop();
2432
2433private:
2434    wp<MediaPlayerBase::AudioSink> mSink;
2435    MediaPlayerBase::AudioSink::AudioCallback mCallback;
2436    void *mCookie;
2437    void *mBuffer;
2438    size_t mBufferSize;
2439
2440    CallbackThread(const CallbackThread &);
2441    CallbackThread &operator=(const CallbackThread &);
2442};
2443
2444CallbackThread::CallbackThread(
2445        const wp<MediaPlayerBase::AudioSink> &sink,
2446        MediaPlayerBase::AudioSink::AudioCallback cb,
2447        void *cookie)
2448    : mSink(sink),
2449      mCallback(cb),
2450      mCookie(cookie),
2451      mBuffer(NULL),
2452      mBufferSize(0) {
2453}
2454
2455CallbackThread::~CallbackThread() {
2456    if (mBuffer) {
2457        free(mBuffer);
2458        mBuffer = NULL;
2459    }
2460}
2461
2462bool CallbackThread::threadLoop() {
2463    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
2464    if (sink == NULL) {
2465        return false;
2466    }
2467
2468    if (mBuffer == NULL) {
2469        mBufferSize = sink->bufferSize();
2470        mBuffer = malloc(mBufferSize);
2471    }
2472
2473    size_t actualSize =
2474        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
2475                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
2476
2477    if (actualSize > 0) {
2478        sink->write(mBuffer, actualSize);
2479        // Could return false on sink->write() error or short count.
2480        // Not necessarily appropriate but would work for AudioCache behavior.
2481    }
2482
2483    return true;
2484}
2485
2486////////////////////////////////////////////////////////////////////////////////
2487
2488void MediaPlayerService::addBatteryData(uint32_t params)
2489{
2490    Mutex::Autolock lock(mLock);
2491
2492    int32_t time = systemTime() / 1000000L;
2493
2494    // change audio output devices. This notification comes from AudioFlinger
2495    if ((params & kBatteryDataSpeakerOn)
2496            || (params & kBatteryDataOtherAudioDeviceOn)) {
2497
2498        int deviceOn[NUM_AUDIO_DEVICES];
2499        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2500            deviceOn[i] = 0;
2501        }
2502
2503        if ((params & kBatteryDataSpeakerOn)
2504                && (params & kBatteryDataOtherAudioDeviceOn)) {
2505            deviceOn[SPEAKER_AND_OTHER] = 1;
2506        } else if (params & kBatteryDataSpeakerOn) {
2507            deviceOn[SPEAKER] = 1;
2508        } else {
2509            deviceOn[OTHER_AUDIO_DEVICE] = 1;
2510        }
2511
2512        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2513            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
2514
2515                if (mBatteryAudio.refCount > 0) { // if playing audio
2516                    if (!deviceOn[i]) {
2517                        mBatteryAudio.lastTime[i] += time;
2518                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2519                        mBatteryAudio.lastTime[i] = 0;
2520                    } else {
2521                        mBatteryAudio.lastTime[i] = 0 - time;
2522                    }
2523                }
2524
2525                mBatteryAudio.deviceOn[i] = deviceOn[i];
2526            }
2527        }
2528        return;
2529    }
2530
2531    // an audio stream is started
2532    if (params & kBatteryDataAudioFlingerStart) {
2533        // record the start time only if currently no other audio
2534        // is being played
2535        if (mBatteryAudio.refCount == 0) {
2536            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2537                if (mBatteryAudio.deviceOn[i]) {
2538                    mBatteryAudio.lastTime[i] -= time;
2539                }
2540            }
2541        }
2542
2543        mBatteryAudio.refCount ++;
2544        return;
2545
2546    } else if (params & kBatteryDataAudioFlingerStop) {
2547        if (mBatteryAudio.refCount <= 0) {
2548            ALOGW("Battery track warning: refCount is <= 0");
2549            return;
2550        }
2551
2552        // record the stop time only if currently this is the only
2553        // audio being played
2554        if (mBatteryAudio.refCount == 1) {
2555            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2556                if (mBatteryAudio.deviceOn[i]) {
2557                    mBatteryAudio.lastTime[i] += time;
2558                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2559                    mBatteryAudio.lastTime[i] = 0;
2560                }
2561            }
2562        }
2563
2564        mBatteryAudio.refCount --;
2565        return;
2566    }
2567
2568    uid_t uid = IPCThreadState::self()->getCallingUid();
2569    if (uid == AID_MEDIA) {
2570        return;
2571    }
2572    int index = mBatteryData.indexOfKey(uid);
2573
2574    if (index < 0) { // create a new entry for this UID
2575        BatteryUsageInfo info;
2576        info.audioTotalTime = 0;
2577        info.videoTotalTime = 0;
2578        info.audioLastTime = 0;
2579        info.videoLastTime = 0;
2580        info.refCount = 0;
2581
2582        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2583            ALOGE("Battery track error: no memory for new app");
2584            return;
2585        }
2586    }
2587
2588    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2589
2590    if (params & kBatteryDataCodecStarted) {
2591        if (params & kBatteryDataTrackAudio) {
2592            info.audioLastTime -= time;
2593            info.refCount ++;
2594        }
2595        if (params & kBatteryDataTrackVideo) {
2596            info.videoLastTime -= time;
2597            info.refCount ++;
2598        }
2599    } else {
2600        if (info.refCount == 0) {
2601            ALOGW("Battery track warning: refCount is already 0");
2602            return;
2603        } else if (info.refCount < 0) {
2604            ALOGE("Battery track error: refCount < 0");
2605            mBatteryData.removeItem(uid);
2606            return;
2607        }
2608
2609        if (params & kBatteryDataTrackAudio) {
2610            info.audioLastTime += time;
2611            info.refCount --;
2612        }
2613        if (params & kBatteryDataTrackVideo) {
2614            info.videoLastTime += time;
2615            info.refCount --;
2616        }
2617
2618        // no stream is being played by this UID
2619        if (info.refCount == 0) {
2620            info.audioTotalTime += info.audioLastTime;
2621            info.audioLastTime = 0;
2622            info.videoTotalTime += info.videoLastTime;
2623            info.videoLastTime = 0;
2624        }
2625    }
2626}
2627
2628status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2629    Mutex::Autolock lock(mLock);
2630
2631    // audio output devices usage
2632    int32_t time = systemTime() / 1000000L; //in ms
2633    int32_t totalTime;
2634
2635    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2636        totalTime = mBatteryAudio.totalTime[i];
2637
2638        if (mBatteryAudio.deviceOn[i]
2639            && (mBatteryAudio.lastTime[i] != 0)) {
2640                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2641                totalTime += tmpTime;
2642        }
2643
2644        reply->writeInt32(totalTime);
2645        // reset the total time
2646        mBatteryAudio.totalTime[i] = 0;
2647   }
2648
2649    // codec usage
2650    BatteryUsageInfo info;
2651    int size = mBatteryData.size();
2652
2653    reply->writeInt32(size);
2654    int i = 0;
2655
2656    while (i < size) {
2657        info = mBatteryData.valueAt(i);
2658
2659        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2660        reply->writeInt32(info.audioTotalTime);
2661        reply->writeInt32(info.videoTotalTime);
2662
2663        info.audioTotalTime = 0;
2664        info.videoTotalTime = 0;
2665
2666        // remove the UID entry where no stream is being played
2667        if (info.refCount <= 0) {
2668            mBatteryData.removeItemsAt(i);
2669            size --;
2670            i --;
2671        }
2672        i++;
2673    }
2674    return NO_ERROR;
2675}
2676} // namespace android
2677