MediaPlayerService.cpp revision 373580e1d51d3e89c16612998a10105fea09c3c5 
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    int32_t trebleOmx = property_get_int32("persist.media.treble_omx", -1);
740    if ((trebleOmx == 1) || ((trebleOmx == -1) &&
741            property_get_bool("omx.binderization", 0))) {
742        // Treble IOmx
743        sp<IOmx> omx = IOmx::getService();
744        if (omx == nullptr) {
745            ALOGE("Treble IOmx not available");
746            return NULL;
747        }
748        mCodecDeathListener = new ServiceDeathNotifier(omx, p, MEDIACODEC_PROCESS_DEATH);
749        omx->linkToDeath(mCodecDeathListener, 0);
750    } else {
751        // Legacy IOMX
752        binder = sm->getService(String16("media.codec"));
753        if (binder == NULL) {
754            ALOGE("codec service not available");
755            return NULL;
756        }
757        mCodecDeathListener = new ServiceDeathNotifier(binder, p, MEDIACODEC_PROCESS_DEATH);
758        binder->linkToDeath(mCodecDeathListener);
759    }
760
761    if (!p->hardwareOutput()) {
762        Mutex::Autolock l(mLock);
763        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
764                mPid, mAudioAttributes);
765        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
766    }
767
768    return p;
769}
770
771void MediaPlayerService::Client::setDataSource_post(
772        const sp<MediaPlayerBase>& p,
773        status_t status)
774{
775    ALOGV(" setDataSource");
776    mStatus = status;
777    if (mStatus != OK) {
778        ALOGE("  error: %d", mStatus);
779        return;
780    }
781
782    // Set the re-transmission endpoint if one was chosen.
783    if (mRetransmitEndpointValid) {
784        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
785        if (mStatus != NO_ERROR) {
786            ALOGE("setRetransmitEndpoint error: %d", mStatus);
787        }
788    }
789
790    if (mStatus == OK) {
791        mPlayer = p;
792    }
793}
794
795status_t MediaPlayerService::Client::setDataSource(
796        const sp<IMediaHTTPService> &httpService,
797        const char *url,
798        const KeyedVector<String8, String8> *headers)
799{
800    ALOGV("setDataSource(%s)", url);
801    if (url == NULL)
802        return UNKNOWN_ERROR;
803
804    if ((strncmp(url, "http://", 7) == 0) ||
805        (strncmp(url, "https://", 8) == 0) ||
806        (strncmp(url, "rtsp://", 7) == 0)) {
807        if (!checkPermission("android.permission.INTERNET")) {
808            return PERMISSION_DENIED;
809        }
810    }
811
812    if (strncmp(url, "content://", 10) == 0) {
813        // get a filedescriptor for the content Uri and
814        // pass it to the setDataSource(fd) method
815
816        String16 url16(url);
817        int fd = android::openContentProviderFile(url16);
818        if (fd < 0)
819        {
820            ALOGE("Couldn't open fd for %s", url);
821            return UNKNOWN_ERROR;
822        }
823        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
824        close(fd);
825        return mStatus;
826    } else {
827        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
828        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
829        if (p == NULL) {
830            return NO_INIT;
831        }
832
833        setDataSource_post(p, p->setDataSource(httpService, url, headers));
834        return mStatus;
835    }
836}
837
838status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
839{
840    ALOGV("setDataSource fd=%d (%s), offset=%lld, length=%lld",
841            fd, nameForFd(fd).c_str(), (long long) offset, (long long) length);
842    struct stat sb;
843    int ret = fstat(fd, &sb);
844    if (ret != 0) {
845        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
846        return UNKNOWN_ERROR;
847    }
848
849    ALOGV("st_dev  = %llu", static_cast<unsigned long long>(sb.st_dev));
850    ALOGV("st_mode = %u", sb.st_mode);
851    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
852    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
853    ALOGV("st_size = %llu", static_cast<unsigned long long>(sb.st_size));
854
855    if (offset >= sb.st_size) {
856        ALOGE("offset error");
857        return UNKNOWN_ERROR;
858    }
859    if (offset + length > sb.st_size) {
860        length = sb.st_size - offset;
861        ALOGV("calculated length = %lld", (long long)length);
862    }
863
864    player_type playerType = MediaPlayerFactory::getPlayerType(this,
865                                                               fd,
866                                                               offset,
867                                                               length);
868    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
869    if (p == NULL) {
870        return NO_INIT;
871    }
872
873    // now set data source
874    setDataSource_post(p, p->setDataSource(fd, offset, length));
875    return mStatus;
876}
877
878status_t MediaPlayerService::Client::setDataSource(
879        const sp<IStreamSource> &source) {
880    // create the right type of player
881    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
882    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
883    if (p == NULL) {
884        return NO_INIT;
885    }
886
887    // now set data source
888    setDataSource_post(p, p->setDataSource(source));
889    return mStatus;
890}
891
892status_t MediaPlayerService::Client::setDataSource(
893        const sp<IDataSource> &source) {
894    sp<DataSource> dataSource = DataSource::CreateFromIDataSource(source);
895    player_type playerType = MediaPlayerFactory::getPlayerType(this, dataSource);
896    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
897    if (p == NULL) {
898        return NO_INIT;
899    }
900    // now set data source
901    setDataSource_post(p, p->setDataSource(dataSource));
902    return mStatus;
903}
904
905void MediaPlayerService::Client::disconnectNativeWindow() {
906    if (mConnectedWindow != NULL) {
907        status_t err = nativeWindowDisconnect(
908                mConnectedWindow.get(), "disconnectNativeWindow");
909
910        if (err != OK) {
911            ALOGW("nativeWindowDisconnect returned an error: %s (%d)",
912                    strerror(-err), err);
913        }
914    }
915    mConnectedWindow.clear();
916}
917
918status_t MediaPlayerService::Client::setVideoSurfaceTexture(
919        const sp<IGraphicBufferProducer>& bufferProducer)
920{
921    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
922    sp<MediaPlayerBase> p = getPlayer();
923    if (p == 0) return UNKNOWN_ERROR;
924
925    sp<IBinder> binder(IInterface::asBinder(bufferProducer));
926    if (mConnectedWindowBinder == binder) {
927        return OK;
928    }
929
930    sp<ANativeWindow> anw;
931    if (bufferProducer != NULL) {
932        anw = new Surface(bufferProducer, true /* controlledByApp */);
933        status_t err = nativeWindowConnect(anw.get(), "setVideoSurfaceTexture");
934
935        if (err != OK) {
936            ALOGE("setVideoSurfaceTexture failed: %d", err);
937            // Note that we must do the reset before disconnecting from the ANW.
938            // Otherwise queue/dequeue calls could be made on the disconnected
939            // ANW, which may result in errors.
940            reset();
941
942            disconnectNativeWindow();
943
944            return err;
945        }
946    }
947
948    // Note that we must set the player's new GraphicBufferProducer before
949    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
950    // on the disconnected ANW, which may result in errors.
951    status_t err = p->setVideoSurfaceTexture(bufferProducer);
952
953    disconnectNativeWindow();
954
955    mConnectedWindow = anw;
956
957    if (err == OK) {
958        mConnectedWindowBinder = binder;
959    } else {
960        disconnectNativeWindow();
961    }
962
963    return err;
964}
965
966status_t MediaPlayerService::Client::invoke(const Parcel& request,
967                                            Parcel *reply)
968{
969    sp<MediaPlayerBase> p = getPlayer();
970    if (p == NULL) return UNKNOWN_ERROR;
971    return p->invoke(request, reply);
972}
973
974// This call doesn't need to access the native player.
975status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
976{
977    status_t status;
978    media::Metadata::Filter allow, drop;
979
980    if (unmarshallFilter(filter, &allow, &status) &&
981        unmarshallFilter(filter, &drop, &status)) {
982        Mutex::Autolock lock(mLock);
983
984        mMetadataAllow = allow;
985        mMetadataDrop = drop;
986    }
987    return status;
988}
989
990status_t MediaPlayerService::Client::getMetadata(
991        bool update_only, bool /*apply_filter*/, Parcel *reply)
992{
993    sp<MediaPlayerBase> player = getPlayer();
994    if (player == 0) return UNKNOWN_ERROR;
995
996    status_t status;
997    // Placeholder for the return code, updated by the caller.
998    reply->writeInt32(-1);
999
1000    media::Metadata::Filter ids;
1001
1002    // We don't block notifications while we fetch the data. We clear
1003    // mMetadataUpdated first so we don't lose notifications happening
1004    // during the rest of this call.
1005    {
1006        Mutex::Autolock lock(mLock);
1007        if (update_only) {
1008            ids = mMetadataUpdated;
1009        }
1010        mMetadataUpdated.clear();
1011    }
1012
1013    media::Metadata metadata(reply);
1014
1015    metadata.appendHeader();
1016    status = player->getMetadata(ids, reply);
1017
1018    if (status != OK) {
1019        metadata.resetParcel();
1020        ALOGE("getMetadata failed %d", status);
1021        return status;
1022    }
1023
1024    // FIXME: Implement filtering on the result. Not critical since
1025    // filtering takes place on the update notifications already. This
1026    // would be when all the metadata are fetch and a filter is set.
1027
1028    // Everything is fine, update the metadata length.
1029    metadata.updateLength();
1030    return OK;
1031}
1032
1033status_t MediaPlayerService::Client::setBufferingSettings(
1034        const BufferingSettings& buffering)
1035{
1036    ALOGV("[%d] setBufferingSettings{%s}",
1037            mConnId, buffering.toString().string());
1038    sp<MediaPlayerBase> p = getPlayer();
1039    if (p == 0) return UNKNOWN_ERROR;
1040    return p->setBufferingSettings(buffering);
1041}
1042
1043status_t MediaPlayerService::Client::getDefaultBufferingSettings(
1044        BufferingSettings* buffering /* nonnull */)
1045{
1046    sp<MediaPlayerBase> p = getPlayer();
1047    // TODO: create mPlayer on demand.
1048    if (p == 0) return UNKNOWN_ERROR;
1049    status_t ret = p->getDefaultBufferingSettings(buffering);
1050    if (ret == NO_ERROR) {
1051        ALOGV("[%d] getDefaultBufferingSettings{%s}",
1052                mConnId, buffering->toString().string());
1053    } else {
1054        ALOGV("[%d] getDefaultBufferingSettings returned %d", mConnId, ret);
1055    }
1056    return ret;
1057}
1058
1059status_t MediaPlayerService::Client::prepareAsync()
1060{
1061    ALOGV("[%d] prepareAsync", mConnId);
1062    sp<MediaPlayerBase> p = getPlayer();
1063    if (p == 0) return UNKNOWN_ERROR;
1064    status_t ret = p->prepareAsync();
1065#if CALLBACK_ANTAGONIZER
1066    ALOGD("start Antagonizer");
1067    if (ret == NO_ERROR) mAntagonizer->start();
1068#endif
1069    return ret;
1070}
1071
1072status_t MediaPlayerService::Client::start()
1073{
1074    ALOGV("[%d] start", mConnId);
1075    sp<MediaPlayerBase> p = getPlayer();
1076    if (p == 0) return UNKNOWN_ERROR;
1077    p->setLooping(mLoop);
1078    return p->start();
1079}
1080
1081status_t MediaPlayerService::Client::stop()
1082{
1083    ALOGV("[%d] stop", mConnId);
1084    sp<MediaPlayerBase> p = getPlayer();
1085    if (p == 0) return UNKNOWN_ERROR;
1086    return p->stop();
1087}
1088
1089status_t MediaPlayerService::Client::pause()
1090{
1091    ALOGV("[%d] pause", mConnId);
1092    sp<MediaPlayerBase> p = getPlayer();
1093    if (p == 0) return UNKNOWN_ERROR;
1094    return p->pause();
1095}
1096
1097status_t MediaPlayerService::Client::isPlaying(bool* state)
1098{
1099    *state = false;
1100    sp<MediaPlayerBase> p = getPlayer();
1101    if (p == 0) return UNKNOWN_ERROR;
1102    *state = p->isPlaying();
1103    ALOGV("[%d] isPlaying: %d", mConnId, *state);
1104    return NO_ERROR;
1105}
1106
1107status_t MediaPlayerService::Client::setPlaybackSettings(const AudioPlaybackRate& rate)
1108{
1109    ALOGV("[%d] setPlaybackSettings(%f, %f, %d, %d)",
1110            mConnId, rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
1111    sp<MediaPlayerBase> p = getPlayer();
1112    if (p == 0) return UNKNOWN_ERROR;
1113    return p->setPlaybackSettings(rate);
1114}
1115
1116status_t MediaPlayerService::Client::getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */)
1117{
1118    sp<MediaPlayerBase> p = getPlayer();
1119    if (p == 0) return UNKNOWN_ERROR;
1120    status_t ret = p->getPlaybackSettings(rate);
1121    if (ret == NO_ERROR) {
1122        ALOGV("[%d] getPlaybackSettings(%f, %f, %d, %d)",
1123                mConnId, rate->mSpeed, rate->mPitch, rate->mFallbackMode, rate->mStretchMode);
1124    } else {
1125        ALOGV("[%d] getPlaybackSettings returned %d", mConnId, ret);
1126    }
1127    return ret;
1128}
1129
1130status_t MediaPlayerService::Client::setSyncSettings(
1131        const AVSyncSettings& sync, float videoFpsHint)
1132{
1133    ALOGV("[%d] setSyncSettings(%u, %u, %f, %f)",
1134            mConnId, sync.mSource, sync.mAudioAdjustMode, sync.mTolerance, videoFpsHint);
1135    sp<MediaPlayerBase> p = getPlayer();
1136    if (p == 0) return UNKNOWN_ERROR;
1137    return p->setSyncSettings(sync, videoFpsHint);
1138}
1139
1140status_t MediaPlayerService::Client::getSyncSettings(
1141        AVSyncSettings* sync /* nonnull */, float* videoFps /* nonnull */)
1142{
1143    sp<MediaPlayerBase> p = getPlayer();
1144    if (p == 0) return UNKNOWN_ERROR;
1145    status_t ret = p->getSyncSettings(sync, videoFps);
1146    if (ret == NO_ERROR) {
1147        ALOGV("[%d] getSyncSettings(%u, %u, %f, %f)",
1148                mConnId, sync->mSource, sync->mAudioAdjustMode, sync->mTolerance, *videoFps);
1149    } else {
1150        ALOGV("[%d] getSyncSettings returned %d", mConnId, ret);
1151    }
1152    return ret;
1153}
1154
1155status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1156{
1157    ALOGV("getCurrentPosition");
1158    sp<MediaPlayerBase> p = getPlayer();
1159    if (p == 0) return UNKNOWN_ERROR;
1160    status_t ret = p->getCurrentPosition(msec);
1161    if (ret == NO_ERROR) {
1162        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1163    } else {
1164        ALOGE("getCurrentPosition returned %d", ret);
1165    }
1166    return ret;
1167}
1168
1169status_t MediaPlayerService::Client::getDuration(int *msec)
1170{
1171    ALOGV("getDuration");
1172    sp<MediaPlayerBase> p = getPlayer();
1173    if (p == 0) return UNKNOWN_ERROR;
1174    status_t ret = p->getDuration(msec);
1175    if (ret == NO_ERROR) {
1176        ALOGV("[%d] getDuration = %d", mConnId, *msec);
1177    } else {
1178        ALOGE("getDuration returned %d", ret);
1179    }
1180    return ret;
1181}
1182
1183status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1184    ALOGV("setNextPlayer");
1185    Mutex::Autolock l(mLock);
1186    sp<Client> c = static_cast<Client*>(player.get());
1187    if (c != NULL && !mService->hasClient(c)) {
1188      return BAD_VALUE;
1189    }
1190
1191    mNextClient = c;
1192
1193    if (c != NULL) {
1194        if (mAudioOutput != NULL) {
1195            mAudioOutput->setNextOutput(c->mAudioOutput);
1196        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1197            ALOGE("no current audio output");
1198        }
1199
1200        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1201            mPlayer->setNextPlayer(mNextClient->getPlayer());
1202        }
1203    }
1204
1205    return OK;
1206}
1207
1208VolumeShaper::Status MediaPlayerService::Client::applyVolumeShaper(
1209        const sp<VolumeShaper::Configuration>& configuration,
1210        const sp<VolumeShaper::Operation>& operation) {
1211    // for hardware output, call player instead
1212    ALOGV("Client::applyVolumeShaper(%p)", this);
1213    sp<MediaPlayerBase> p = getPlayer();
1214    {
1215        Mutex::Autolock l(mLock);
1216        if (p != 0 && p->hardwareOutput()) {
1217            // TODO: investigate internal implementation
1218            return VolumeShaper::Status(INVALID_OPERATION);
1219        }
1220        if (mAudioOutput.get() != nullptr) {
1221            return mAudioOutput->applyVolumeShaper(configuration, operation);
1222        }
1223    }
1224    return VolumeShaper::Status(INVALID_OPERATION);
1225}
1226
1227sp<VolumeShaper::State> MediaPlayerService::Client::getVolumeShaperState(int id) {
1228    // for hardware output, call player instead
1229    ALOGV("Client::getVolumeShaperState(%p)", this);
1230    sp<MediaPlayerBase> p = getPlayer();
1231    {
1232        Mutex::Autolock l(mLock);
1233        if (p != 0 && p->hardwareOutput()) {
1234            // TODO: investigate internal implementation.
1235            return nullptr;
1236        }
1237        if (mAudioOutput.get() != nullptr) {
1238            return mAudioOutput->getVolumeShaperState(id);
1239        }
1240    }
1241    return nullptr;
1242}
1243
1244status_t MediaPlayerService::Client::seekTo(int msec, MediaPlayerSeekMode mode)
1245{
1246    ALOGV("[%d] seekTo(%d, %d)", mConnId, msec, mode);
1247    sp<MediaPlayerBase> p = getPlayer();
1248    if (p == 0) return UNKNOWN_ERROR;
1249    return p->seekTo(msec, mode);
1250}
1251
1252status_t MediaPlayerService::Client::reset()
1253{
1254    ALOGV("[%d] reset", mConnId);
1255    mRetransmitEndpointValid = false;
1256    sp<MediaPlayerBase> p = getPlayer();
1257    if (p == 0) return UNKNOWN_ERROR;
1258    return p->reset();
1259}
1260
1261status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1262{
1263    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1264    // TODO: for hardware output, call player instead
1265    Mutex::Autolock l(mLock);
1266    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1267    return NO_ERROR;
1268}
1269
1270status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1271{
1272    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1273    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1274    if (mAudioAttributes == NULL) {
1275        return NO_MEMORY;
1276    }
1277    unmarshallAudioAttributes(parcel, mAudioAttributes);
1278
1279    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1280            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1281            mAudioAttributes->tags);
1282
1283    if (mAudioOutput != 0) {
1284        mAudioOutput->setAudioAttributes(mAudioAttributes);
1285    }
1286    return NO_ERROR;
1287}
1288
1289status_t MediaPlayerService::Client::setLooping(int loop)
1290{
1291    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1292    mLoop = loop;
1293    sp<MediaPlayerBase> p = getPlayer();
1294    if (p != 0) return p->setLooping(loop);
1295    return NO_ERROR;
1296}
1297
1298status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1299{
1300    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1301
1302    // for hardware output, call player instead
1303    sp<MediaPlayerBase> p = getPlayer();
1304    {
1305      Mutex::Autolock l(mLock);
1306      if (p != 0 && p->hardwareOutput()) {
1307          MediaPlayerHWInterface* hwp =
1308                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1309          return hwp->setVolume(leftVolume, rightVolume);
1310      } else {
1311          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1312          return NO_ERROR;
1313      }
1314    }
1315
1316    return NO_ERROR;
1317}
1318
1319status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1320{
1321    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1322    Mutex::Autolock l(mLock);
1323    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1324    return NO_ERROR;
1325}
1326
1327status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1328{
1329    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1330    Mutex::Autolock l(mLock);
1331    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1332    return NO_ERROR;
1333}
1334
1335status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1336    ALOGV("[%d] setParameter(%d)", mConnId, key);
1337    switch (key) {
1338    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1339    {
1340        Mutex::Autolock l(mLock);
1341        return setAudioAttributes_l(request);
1342    }
1343    default:
1344        sp<MediaPlayerBase> p = getPlayer();
1345        if (p == 0) { return UNKNOWN_ERROR; }
1346        return p->setParameter(key, request);
1347    }
1348}
1349
1350status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1351    ALOGV("[%d] getParameter(%d)", mConnId, key);
1352    sp<MediaPlayerBase> p = getPlayer();
1353    if (p == 0) return UNKNOWN_ERROR;
1354    return p->getParameter(key, reply);
1355}
1356
1357status_t MediaPlayerService::Client::setRetransmitEndpoint(
1358        const struct sockaddr_in* endpoint) {
1359
1360    if (NULL != endpoint) {
1361        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1362        uint16_t p = ntohs(endpoint->sin_port);
1363        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1364                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1365    } else {
1366        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1367    }
1368
1369    sp<MediaPlayerBase> p = getPlayer();
1370
1371    // Right now, the only valid time to set a retransmit endpoint is before
1372    // player selection has been made (since the presence or absence of a
1373    // retransmit endpoint is going to determine which player is selected during
1374    // setDataSource).
1375    if (p != 0) return INVALID_OPERATION;
1376
1377    if (NULL != endpoint) {
1378        mRetransmitEndpoint = *endpoint;
1379        mRetransmitEndpointValid = true;
1380    } else {
1381        mRetransmitEndpointValid = false;
1382    }
1383
1384    return NO_ERROR;
1385}
1386
1387status_t MediaPlayerService::Client::getRetransmitEndpoint(
1388        struct sockaddr_in* endpoint)
1389{
1390    if (NULL == endpoint)
1391        return BAD_VALUE;
1392
1393    sp<MediaPlayerBase> p = getPlayer();
1394
1395    if (p != NULL)
1396        return p->getRetransmitEndpoint(endpoint);
1397
1398    if (!mRetransmitEndpointValid)
1399        return NO_INIT;
1400
1401    *endpoint = mRetransmitEndpoint;
1402
1403    return NO_ERROR;
1404}
1405
1406void MediaPlayerService::Client::notify(
1407        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1408{
1409    Client* client = static_cast<Client*>(cookie);
1410    if (client == NULL) {
1411        return;
1412    }
1413
1414    sp<IMediaPlayerClient> c;
1415    sp<Client> nextClient;
1416    status_t errStartNext = NO_ERROR;
1417    {
1418        Mutex::Autolock l(client->mLock);
1419        c = client->mClient;
1420        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1421            nextClient = client->mNextClient;
1422
1423            if (client->mAudioOutput != NULL)
1424                client->mAudioOutput->switchToNextOutput();
1425
1426            errStartNext = nextClient->start();
1427        }
1428    }
1429
1430    if (nextClient != NULL) {
1431        sp<IMediaPlayerClient> nc;
1432        {
1433            Mutex::Autolock l(nextClient->mLock);
1434            nc = nextClient->mClient;
1435        }
1436        if (nc != NULL) {
1437            if (errStartNext == NO_ERROR) {
1438                nc->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1439            } else {
1440                nc->notify(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN , 0, obj);
1441                ALOGE("gapless:start playback for next track failed, err(%d)", errStartNext);
1442            }
1443        }
1444    }
1445
1446    if (MEDIA_INFO == msg &&
1447        MEDIA_INFO_METADATA_UPDATE == ext1) {
1448        const media::Metadata::Type metadata_type = ext2;
1449
1450        if(client->shouldDropMetadata(metadata_type)) {
1451            return;
1452        }
1453
1454        // Update the list of metadata that have changed. getMetadata
1455        // also access mMetadataUpdated and clears it.
1456        client->addNewMetadataUpdate(metadata_type);
1457    }
1458
1459    if (c != NULL) {
1460        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1461        c->notify(msg, ext1, ext2, obj);
1462    }
1463}
1464
1465
1466bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1467{
1468    Mutex::Autolock lock(mLock);
1469
1470    if (findMetadata(mMetadataDrop, code)) {
1471        return true;
1472    }
1473
1474    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1475        return false;
1476    } else {
1477        return true;
1478    }
1479}
1480
1481
1482void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1483    Mutex::Autolock lock(mLock);
1484    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1485        mMetadataUpdated.add(metadata_type);
1486    }
1487}
1488
1489// Modular DRM
1490status_t MediaPlayerService::Client::prepareDrm(const uint8_t uuid[16],
1491        const Vector<uint8_t>& drmSessionId)
1492{
1493    ALOGV("[%d] prepareDrm", mConnId);
1494    sp<MediaPlayerBase> p = getPlayer();
1495    if (p == 0) return UNKNOWN_ERROR;
1496
1497    status_t ret = p->prepareDrm(uuid, drmSessionId);
1498    ALOGV("prepareDrm ret: %d", ret);
1499
1500    return ret;
1501}
1502
1503status_t MediaPlayerService::Client::releaseDrm()
1504{
1505    ALOGV("[%d] releaseDrm", mConnId);
1506    sp<MediaPlayerBase> p = getPlayer();
1507    if (p == 0) return UNKNOWN_ERROR;
1508
1509    status_t ret = p->releaseDrm();
1510    ALOGV("releaseDrm ret: %d", ret);
1511
1512    return ret;
1513}
1514
1515#if CALLBACK_ANTAGONIZER
1516const int Antagonizer::interval = 10000; // 10 msecs
1517
1518Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1519    mExit(false), mActive(false), mClient(client), mCb(cb)
1520{
1521    createThread(callbackThread, this);
1522}
1523
1524void Antagonizer::kill()
1525{
1526    Mutex::Autolock _l(mLock);
1527    mActive = false;
1528    mExit = true;
1529    mCondition.wait(mLock);
1530}
1531
1532int Antagonizer::callbackThread(void* user)
1533{
1534    ALOGD("Antagonizer started");
1535    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1536    while (!p->mExit) {
1537        if (p->mActive) {
1538            ALOGV("send event");
1539            p->mCb(p->mClient, 0, 0, 0);
1540        }
1541        usleep(interval);
1542    }
1543    Mutex::Autolock _l(p->mLock);
1544    p->mCondition.signal();
1545    ALOGD("Antagonizer stopped");
1546    return 0;
1547}
1548#endif
1549
1550#undef LOG_TAG
1551#define LOG_TAG "AudioSink"
1552MediaPlayerService::AudioOutput::AudioOutput(audio_session_t sessionId, uid_t uid, int pid,
1553        const audio_attributes_t* attr)
1554    : mCallback(NULL),
1555      mCallbackCookie(NULL),
1556      mCallbackData(NULL),
1557      mStreamType(AUDIO_STREAM_MUSIC),
1558      mLeftVolume(1.0),
1559      mRightVolume(1.0),
1560      mPlaybackRate(AUDIO_PLAYBACK_RATE_DEFAULT),
1561      mSampleRateHz(0),
1562      mMsecsPerFrame(0),
1563      mFrameSize(0),
1564      mSessionId(sessionId),
1565      mUid(uid),
1566      mPid(pid),
1567      mSendLevel(0.0),
1568      mAuxEffectId(0),
1569      mFlags(AUDIO_OUTPUT_FLAG_NONE)
1570{
1571    ALOGV("AudioOutput(%d)", sessionId);
1572    if (attr != NULL) {
1573        mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1574        if (mAttributes != NULL) {
1575            memcpy(mAttributes, attr, sizeof(audio_attributes_t));
1576            mStreamType = audio_attributes_to_stream_type(attr);
1577        }
1578    } else {
1579        mAttributes = NULL;
1580    }
1581
1582    setMinBufferCount();
1583}
1584
1585MediaPlayerService::AudioOutput::~AudioOutput()
1586{
1587    close();
1588    free(mAttributes);
1589    delete mCallbackData;
1590}
1591
1592//static
1593void MediaPlayerService::AudioOutput::setMinBufferCount()
1594{
1595    char value[PROPERTY_VALUE_MAX];
1596    if (property_get("ro.kernel.qemu", value, 0)) {
1597        mIsOnEmulator = true;
1598        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1599    }
1600}
1601
1602// static
1603bool MediaPlayerService::AudioOutput::isOnEmulator()
1604{
1605    setMinBufferCount(); // benign race wrt other threads
1606    return mIsOnEmulator;
1607}
1608
1609// static
1610int MediaPlayerService::AudioOutput::getMinBufferCount()
1611{
1612    setMinBufferCount(); // benign race wrt other threads
1613    return mMinBufferCount;
1614}
1615
1616ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1617{
1618    Mutex::Autolock lock(mLock);
1619    if (mTrack == 0) return NO_INIT;
1620    return mTrack->frameCount() * mFrameSize;
1621}
1622
1623ssize_t MediaPlayerService::AudioOutput::frameCount() const
1624{
1625    Mutex::Autolock lock(mLock);
1626    if (mTrack == 0) return NO_INIT;
1627    return mTrack->frameCount();
1628}
1629
1630ssize_t MediaPlayerService::AudioOutput::channelCount() const
1631{
1632    Mutex::Autolock lock(mLock);
1633    if (mTrack == 0) return NO_INIT;
1634    return mTrack->channelCount();
1635}
1636
1637ssize_t MediaPlayerService::AudioOutput::frameSize() const
1638{
1639    Mutex::Autolock lock(mLock);
1640    if (mTrack == 0) return NO_INIT;
1641    return mFrameSize;
1642}
1643
1644uint32_t MediaPlayerService::AudioOutput::latency () const
1645{
1646    Mutex::Autolock lock(mLock);
1647    if (mTrack == 0) return 0;
1648    return mTrack->latency();
1649}
1650
1651float MediaPlayerService::AudioOutput::msecsPerFrame() const
1652{
1653    Mutex::Autolock lock(mLock);
1654    return mMsecsPerFrame;
1655}
1656
1657status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1658{
1659    Mutex::Autolock lock(mLock);
1660    if (mTrack == 0) return NO_INIT;
1661    return mTrack->getPosition(position);
1662}
1663
1664status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1665{
1666    Mutex::Autolock lock(mLock);
1667    if (mTrack == 0) return NO_INIT;
1668    return mTrack->getTimestamp(ts);
1669}
1670
1671// TODO: Remove unnecessary calls to getPlayedOutDurationUs()
1672// as it acquires locks and may query the audio driver.
1673//
1674// Some calls could conceivably retrieve extrapolated data instead of
1675// accessing getTimestamp() or getPosition() every time a data buffer with
1676// a media time is received.
1677//
1678// Calculate duration of played samples if played at normal rate (i.e., 1.0).
1679int64_t MediaPlayerService::AudioOutput::getPlayedOutDurationUs(int64_t nowUs) const
1680{
1681    Mutex::Autolock lock(mLock);
1682    if (mTrack == 0 || mSampleRateHz == 0) {
1683        return 0;
1684    }
1685
1686    uint32_t numFramesPlayed;
1687    int64_t numFramesPlayedAtUs;
1688    AudioTimestamp ts;
1689
1690    status_t res = mTrack->getTimestamp(ts);
1691    if (res == OK) {                 // case 1: mixing audio tracks and offloaded tracks.
1692        numFramesPlayed = ts.mPosition;
1693        numFramesPlayedAtUs = ts.mTime.tv_sec * 1000000LL + ts.mTime.tv_nsec / 1000;
1694        //ALOGD("getTimestamp: OK %d %lld", numFramesPlayed, (long long)numFramesPlayedAtUs);
1695    } else if (res == WOULD_BLOCK) { // case 2: transitory state on start of a new track
1696        numFramesPlayed = 0;
1697        numFramesPlayedAtUs = nowUs;
1698        //ALOGD("getTimestamp: WOULD_BLOCK %d %lld",
1699        //        numFramesPlayed, (long long)numFramesPlayedAtUs);
1700    } else {                         // case 3: transitory at new track or audio fast tracks.
1701        res = mTrack->getPosition(&numFramesPlayed);
1702        CHECK_EQ(res, (status_t)OK);
1703        numFramesPlayedAtUs = nowUs;
1704        numFramesPlayedAtUs += 1000LL * mTrack->latency() / 2; /* XXX */
1705        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAtUs);
1706    }
1707
1708    // CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
1709    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
1710    int64_t durationUs = (int64_t)((int32_t)numFramesPlayed * 1000000LL / mSampleRateHz)
1711            + nowUs - numFramesPlayedAtUs;
1712    if (durationUs < 0) {
1713        // Occurs when numFramesPlayed position is very small and the following:
1714        // (1) In case 1, the time nowUs is computed before getTimestamp() is called and
1715        //     numFramesPlayedAtUs is greater than nowUs by time more than numFramesPlayed.
1716        // (2) In case 3, using getPosition and adding mAudioSink->latency() to
1717        //     numFramesPlayedAtUs, by a time amount greater than numFramesPlayed.
1718        //
1719        // Both of these are transitory conditions.
1720        ALOGV("getPlayedOutDurationUs: negative duration %lld set to zero", (long long)durationUs);
1721        durationUs = 0;
1722    }
1723    ALOGV("getPlayedOutDurationUs(%lld) nowUs(%lld) frames(%u) framesAt(%lld)",
1724            (long long)durationUs, (long long)nowUs,
1725            numFramesPlayed, (long long)numFramesPlayedAtUs);
1726    return durationUs;
1727}
1728
1729status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1730{
1731    Mutex::Autolock lock(mLock);
1732    if (mTrack == 0) return NO_INIT;
1733    ExtendedTimestamp ets;
1734    status_t status = mTrack->getTimestamp(&ets);
1735    if (status == OK || status == WOULD_BLOCK) {
1736        *frameswritten = (uint32_t)ets.mPosition[ExtendedTimestamp::LOCATION_CLIENT];
1737    }
1738    return status;
1739}
1740
1741status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1742{
1743    Mutex::Autolock lock(mLock);
1744    if (mTrack == 0) return NO_INIT;
1745    return mTrack->setParameters(keyValuePairs);
1746}
1747
1748String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1749{
1750    Mutex::Autolock lock(mLock);
1751    if (mTrack == 0) return String8::empty();
1752    return mTrack->getParameters(keys);
1753}
1754
1755void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1756    Mutex::Autolock lock(mLock);
1757    if (attributes == NULL) {
1758        free(mAttributes);
1759        mAttributes = NULL;
1760    } else {
1761        if (mAttributes == NULL) {
1762            mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1763        }
1764        memcpy(mAttributes, attributes, sizeof(audio_attributes_t));
1765        mStreamType = audio_attributes_to_stream_type(attributes);
1766    }
1767}
1768
1769void MediaPlayerService::AudioOutput::setAudioStreamType(audio_stream_type_t streamType)
1770{
1771    Mutex::Autolock lock(mLock);
1772    // do not allow direct stream type modification if attributes have been set
1773    if (mAttributes == NULL) {
1774        mStreamType = streamType;
1775    }
1776}
1777
1778void MediaPlayerService::AudioOutput::deleteRecycledTrack_l()
1779{
1780    ALOGV("deleteRecycledTrack_l");
1781    if (mRecycledTrack != 0) {
1782
1783        if (mCallbackData != NULL) {
1784            mCallbackData->setOutput(NULL);
1785            mCallbackData->endTrackSwitch();
1786        }
1787
1788        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1789            int32_t msec = 0;
1790            if (!mRecycledTrack->stopped()) { // check if active
1791                 (void)mRecycledTrack->pendingDuration(&msec);
1792            }
1793            mRecycledTrack->stop(); // ensure full data drain
1794            ALOGD("deleting recycled track, waiting for data drain (%d msec)", msec);
1795            if (msec > 0) {
1796                static const int32_t WAIT_LIMIT_MS = 3000;
1797                if (msec > WAIT_LIMIT_MS) {
1798                    msec = WAIT_LIMIT_MS;
1799                }
1800                usleep(msec * 1000LL);
1801            }
1802        }
1803        // An offloaded track isn't flushed because the STREAM_END is reported
1804        // slightly prematurely to allow time for the gapless track switch
1805        // but this means that if we decide not to recycle the track there
1806        // could be a small amount of residual data still playing. We leave
1807        // AudioFlinger to drain the track.
1808
1809        mRecycledTrack.clear();
1810        close_l();
1811        delete mCallbackData;
1812        mCallbackData = NULL;
1813    }
1814}
1815
1816void MediaPlayerService::AudioOutput::close_l()
1817{
1818    mTrack.clear();
1819}
1820
1821status_t MediaPlayerService::AudioOutput::open(
1822        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1823        audio_format_t format, int bufferCount,
1824        AudioCallback cb, void *cookie,
1825        audio_output_flags_t flags,
1826        const audio_offload_info_t *offloadInfo,
1827        bool doNotReconnect,
1828        uint32_t suggestedFrameCount)
1829{
1830    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1831                format, bufferCount, mSessionId, flags);
1832
1833    // offloading is only supported in callback mode for now.
1834    // offloadInfo must be present if offload flag is set
1835    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1836            ((cb == NULL) || (offloadInfo == NULL))) {
1837        return BAD_VALUE;
1838    }
1839
1840    // compute frame count for the AudioTrack internal buffer
1841    size_t frameCount;
1842    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1843        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1844    } else {
1845        // try to estimate the buffer processing fetch size from AudioFlinger.
1846        // framesPerBuffer is approximate and generally correct, except when it's not :-).
1847        uint32_t afSampleRate;
1848        size_t afFrameCount;
1849        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1850            return NO_INIT;
1851        }
1852        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1853            return NO_INIT;
1854        }
1855        const size_t framesPerBuffer =
1856                (unsigned long long)sampleRate * afFrameCount / afSampleRate;
1857
1858        if (bufferCount == 0) {
1859            // use suggestedFrameCount
1860            bufferCount = (suggestedFrameCount + framesPerBuffer - 1) / framesPerBuffer;
1861        }
1862        // Check argument bufferCount against the mininum buffer count
1863        if (bufferCount != 0 && bufferCount < mMinBufferCount) {
1864            ALOGV("bufferCount (%d) increased to %d", bufferCount, mMinBufferCount);
1865            bufferCount = mMinBufferCount;
1866        }
1867        // if frameCount is 0, then AudioTrack will get frame count from AudioFlinger
1868        // which will be the minimum size permitted.
1869        frameCount = bufferCount * framesPerBuffer;
1870    }
1871
1872    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1873        channelMask = audio_channel_out_mask_from_count(channelCount);
1874        if (0 == channelMask) {
1875            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1876            return NO_INIT;
1877        }
1878    }
1879
1880    Mutex::Autolock lock(mLock);
1881    mCallback = cb;
1882    mCallbackCookie = cookie;
1883
1884    // Check whether we can recycle the track
1885    bool reuse = false;
1886    bool bothOffloaded = false;
1887
1888    if (mRecycledTrack != 0) {
1889        // check whether we are switching between two offloaded tracks
1890        bothOffloaded = (flags & mRecycledTrack->getFlags()
1891                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1892
1893        // check if the existing track can be reused as-is, or if a new track needs to be created.
1894        reuse = true;
1895
1896        if ((mCallbackData == NULL && mCallback != NULL) ||
1897                (mCallbackData != NULL && mCallback == NULL)) {
1898            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1899            ALOGV("can't chain callback and write");
1900            reuse = false;
1901        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1902                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1903            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1904                  mRecycledTrack->getSampleRate(), sampleRate,
1905                  mRecycledTrack->channelCount(), channelCount);
1906            reuse = false;
1907        } else if (flags != mFlags) {
1908            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1909            reuse = false;
1910        } else if (mRecycledTrack->format() != format) {
1911            reuse = false;
1912        }
1913    } else {
1914        ALOGV("no track available to recycle");
1915    }
1916
1917    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1918
1919    // If we can't recycle and both tracks are offloaded
1920    // we must close the previous output before opening a new one
1921    if (bothOffloaded && !reuse) {
1922        ALOGV("both offloaded and not recycling");
1923        deleteRecycledTrack_l();
1924    }
1925
1926    sp<AudioTrack> t;
1927    CallbackData *newcbd = NULL;
1928
1929    // We don't attempt to create a new track if we are recycling an
1930    // offloaded track. But, if we are recycling a non-offloaded or we
1931    // are switching where one is offloaded and one isn't then we create
1932    // the new track in advance so that we can read additional stream info
1933
1934    if (!(reuse && bothOffloaded)) {
1935        ALOGV("creating new AudioTrack");
1936
1937        if (mCallback != NULL) {
1938            newcbd = new CallbackData(this);
1939            t = new AudioTrack(
1940                    mStreamType,
1941                    sampleRate,
1942                    format,
1943                    channelMask,
1944                    frameCount,
1945                    flags,
1946                    CallbackWrapper,
1947                    newcbd,
1948                    0,  // notification frames
1949                    mSessionId,
1950                    AudioTrack::TRANSFER_CALLBACK,
1951                    offloadInfo,
1952                    mUid,
1953                    mPid,
1954                    mAttributes,
1955                    doNotReconnect);
1956        } else {
1957            // TODO: Due to buffer memory concerns, we use a max target playback speed
1958            // based on mPlaybackRate at the time of open (instead of kMaxRequiredSpeed),
1959            // also clamping the target speed to 1.0 <= targetSpeed <= kMaxRequiredSpeed.
1960            const float targetSpeed =
1961                    std::min(std::max(mPlaybackRate.mSpeed, 1.0f), kMaxRequiredSpeed);
1962            ALOGW_IF(targetSpeed != mPlaybackRate.mSpeed,
1963                    "track target speed:%f clamped from playback speed:%f",
1964                    targetSpeed, mPlaybackRate.mSpeed);
1965            t = new AudioTrack(
1966                    mStreamType,
1967                    sampleRate,
1968                    format,
1969                    channelMask,
1970                    frameCount,
1971                    flags,
1972                    NULL, // callback
1973                    NULL, // user data
1974                    0, // notification frames
1975                    mSessionId,
1976                    AudioTrack::TRANSFER_DEFAULT,
1977                    NULL, // offload info
1978                    mUid,
1979                    mPid,
1980                    mAttributes,
1981                    doNotReconnect,
1982                    targetSpeed);
1983        }
1984
1985        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1986            ALOGE("Unable to create audio track");
1987            delete newcbd;
1988            // t goes out of scope, so reference count drops to zero
1989            return NO_INIT;
1990        } else {
1991            // successful AudioTrack initialization implies a legacy stream type was generated
1992            // from the audio attributes
1993            mStreamType = t->streamType();
1994        }
1995    }
1996
1997    if (reuse) {
1998        CHECK(mRecycledTrack != NULL);
1999
2000        if (!bothOffloaded) {
2001            if (mRecycledTrack->frameCount() != t->frameCount()) {
2002                ALOGV("framecount differs: %zu/%zu frames",
2003                      mRecycledTrack->frameCount(), t->frameCount());
2004                reuse = false;
2005            }
2006        }
2007
2008        if (reuse) {
2009            ALOGV("chaining to next output and recycling track");
2010            close_l();
2011            mTrack = mRecycledTrack;
2012            mRecycledTrack.clear();
2013            if (mCallbackData != NULL) {
2014                mCallbackData->setOutput(this);
2015            }
2016            delete newcbd;
2017            return updateTrack();
2018        }
2019    }
2020
2021    // we're not going to reuse the track, unblock and flush it
2022    // this was done earlier if both tracks are offloaded
2023    if (!bothOffloaded) {
2024        deleteRecycledTrack_l();
2025    }
2026
2027    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
2028
2029    mCallbackData = newcbd;
2030    ALOGV("setVolume");
2031    t->setVolume(mLeftVolume, mRightVolume);
2032
2033    mSampleRateHz = sampleRate;
2034    mFlags = flags;
2035    mMsecsPerFrame = 1E3f / (mPlaybackRate.mSpeed * sampleRate);
2036    mFrameSize = t->frameSize();
2037    mTrack = t;
2038
2039    return updateTrack();
2040}
2041
2042status_t MediaPlayerService::AudioOutput::updateTrack() {
2043    if (mTrack == NULL) {
2044        return NO_ERROR;
2045    }
2046
2047    status_t res = NO_ERROR;
2048    // Note some output devices may give us a direct track even though we don't specify it.
2049    // Example: Line application b/17459982.
2050    if ((mTrack->getFlags()
2051            & (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD | AUDIO_OUTPUT_FLAG_DIRECT)) == 0) {
2052        res = mTrack->setPlaybackRate(mPlaybackRate);
2053        if (res == NO_ERROR) {
2054            mTrack->setAuxEffectSendLevel(mSendLevel);
2055            res = mTrack->attachAuxEffect(mAuxEffectId);
2056        }
2057    }
2058    ALOGV("updateTrack() DONE status %d", res);
2059    return res;
2060}
2061
2062status_t MediaPlayerService::AudioOutput::start()
2063{
2064    ALOGV("start");
2065    Mutex::Autolock lock(mLock);
2066    if (mCallbackData != NULL) {
2067        mCallbackData->endTrackSwitch();
2068    }
2069    if (mTrack != 0) {
2070        mTrack->setVolume(mLeftVolume, mRightVolume);
2071        mTrack->setAuxEffectSendLevel(mSendLevel);
2072        return mTrack->start();
2073    }
2074    return NO_INIT;
2075}
2076
2077void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
2078    Mutex::Autolock lock(mLock);
2079    mNextOutput = nextOutput;
2080}
2081
2082void MediaPlayerService::AudioOutput::switchToNextOutput() {
2083    ALOGV("switchToNextOutput");
2084
2085    // Try to acquire the callback lock before moving track (without incurring deadlock).
2086    const unsigned kMaxSwitchTries = 100;
2087    Mutex::Autolock lock(mLock);
2088    for (unsigned tries = 0;;) {
2089        if (mTrack == 0) {
2090            return;
2091        }
2092        if (mNextOutput != NULL && mNextOutput != this) {
2093            if (mCallbackData != NULL) {
2094                // two alternative approaches
2095#if 1
2096                CallbackData *callbackData = mCallbackData;
2097                mLock.unlock();
2098                // proper acquisition sequence
2099                callbackData->lock();
2100                mLock.lock();
2101                // Caution: it is unlikely that someone deleted our callback or changed our target
2102                if (callbackData != mCallbackData || mNextOutput == NULL || mNextOutput == this) {
2103                    // fatal if we are starved out.
2104                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
2105                            "switchToNextOutput() cannot obtain correct lock sequence");
2106                    callbackData->unlock();
2107                    continue;
2108                }
2109                callbackData->mSwitching = true; // begin track switch
2110                callbackData->setOutput(NULL);
2111#else
2112                // tryBeginTrackSwitch() returns false if the callback has the lock.
2113                if (!mCallbackData->tryBeginTrackSwitch()) {
2114                    // fatal if we are starved out.
2115                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
2116                            "switchToNextOutput() cannot obtain callback lock");
2117                    mLock.unlock();
2118                    usleep(5 * 1000 /* usec */); // allow callback to use AudioOutput
2119                    mLock.lock();
2120                    continue;
2121                }
2122#endif
2123            }
2124
2125            Mutex::Autolock nextLock(mNextOutput->mLock);
2126
2127            // If the next output track is not NULL, then it has been
2128            // opened already for playback.
2129            // This is possible even without the next player being started,
2130            // for example, the next player could be prepared and seeked.
2131            //
2132            // Presuming it isn't advisable to force the track over.
2133             if (mNextOutput->mTrack == NULL) {
2134                ALOGD("Recycling track for gapless playback");
2135                delete mNextOutput->mCallbackData;
2136                mNextOutput->mCallbackData = mCallbackData;
2137                mNextOutput->mRecycledTrack = mTrack;
2138                mNextOutput->mSampleRateHz = mSampleRateHz;
2139                mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
2140                mNextOutput->mFlags = mFlags;
2141                mNextOutput->mFrameSize = mFrameSize;
2142                close_l();
2143                mCallbackData = NULL;  // destruction handled by mNextOutput
2144            } else {
2145                ALOGW("Ignoring gapless playback because next player has already started");
2146                // remove track in case resource needed for future players.
2147                if (mCallbackData != NULL) {
2148                    mCallbackData->endTrackSwitch();  // release lock for callbacks before close.
2149                }
2150                close_l();
2151            }
2152        }
2153        break;
2154    }
2155}
2156
2157ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size, bool blocking)
2158{
2159    Mutex::Autolock lock(mLock);
2160    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
2161
2162    //ALOGV("write(%p, %u)", buffer, size);
2163    if (mTrack != 0) {
2164        return mTrack->write(buffer, size, blocking);
2165    }
2166    return NO_INIT;
2167}
2168
2169void MediaPlayerService::AudioOutput::stop()
2170{
2171    ALOGV("stop");
2172    Mutex::Autolock lock(mLock);
2173    if (mTrack != 0) mTrack->stop();
2174}
2175
2176void MediaPlayerService::AudioOutput::flush()
2177{
2178    ALOGV("flush");
2179    Mutex::Autolock lock(mLock);
2180    if (mTrack != 0) mTrack->flush();
2181}
2182
2183void MediaPlayerService::AudioOutput::pause()
2184{
2185    ALOGV("pause");
2186    Mutex::Autolock lock(mLock);
2187    if (mTrack != 0) mTrack->pause();
2188}
2189
2190void MediaPlayerService::AudioOutput::close()
2191{
2192    ALOGV("close");
2193    sp<AudioTrack> track;
2194    {
2195        Mutex::Autolock lock(mLock);
2196        track = mTrack;
2197        close_l(); // clears mTrack
2198    }
2199    // destruction of the track occurs outside of mutex.
2200}
2201
2202void MediaPlayerService::AudioOutput::setVolume(float left, float right)
2203{
2204    ALOGV("setVolume(%f, %f)", left, right);
2205    Mutex::Autolock lock(mLock);
2206    mLeftVolume = left;
2207    mRightVolume = right;
2208    if (mTrack != 0) {
2209        mTrack->setVolume(left, right);
2210    }
2211}
2212
2213status_t MediaPlayerService::AudioOutput::setPlaybackRate(const AudioPlaybackRate &rate)
2214{
2215    ALOGV("setPlaybackRate(%f %f %d %d)",
2216                rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
2217    Mutex::Autolock lock(mLock);
2218    if (mTrack == 0) {
2219        // remember rate so that we can set it when the track is opened
2220        mPlaybackRate = rate;
2221        return OK;
2222    }
2223    status_t res = mTrack->setPlaybackRate(rate);
2224    if (res != NO_ERROR) {
2225        return res;
2226    }
2227    // rate.mSpeed is always greater than 0 if setPlaybackRate succeeded
2228    CHECK_GT(rate.mSpeed, 0.f);
2229    mPlaybackRate = rate;
2230    if (mSampleRateHz != 0) {
2231        mMsecsPerFrame = 1E3f / (rate.mSpeed * mSampleRateHz);
2232    }
2233    return res;
2234}
2235
2236status_t MediaPlayerService::AudioOutput::getPlaybackRate(AudioPlaybackRate *rate)
2237{
2238    ALOGV("setPlaybackRate");
2239    Mutex::Autolock lock(mLock);
2240    if (mTrack == 0) {
2241        return NO_INIT;
2242    }
2243    *rate = mTrack->getPlaybackRate();
2244    return NO_ERROR;
2245}
2246
2247status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
2248{
2249    ALOGV("setAuxEffectSendLevel(%f)", level);
2250    Mutex::Autolock lock(mLock);
2251    mSendLevel = level;
2252    if (mTrack != 0) {
2253        return mTrack->setAuxEffectSendLevel(level);
2254    }
2255    return NO_ERROR;
2256}
2257
2258status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
2259{
2260    ALOGV("attachAuxEffect(%d)", effectId);
2261    Mutex::Autolock lock(mLock);
2262    mAuxEffectId = effectId;
2263    if (mTrack != 0) {
2264        return mTrack->attachAuxEffect(effectId);
2265    }
2266    return NO_ERROR;
2267}
2268
2269VolumeShaper::Status MediaPlayerService::AudioOutput::applyVolumeShaper(
2270                const sp<VolumeShaper::Configuration>& configuration,
2271                const sp<VolumeShaper::Operation>& operation)
2272{
2273    Mutex::Autolock lock(mLock);
2274    ALOGV("AudioOutput::applyVolumeShaper");
2275    if (mTrack != 0) {
2276        return mTrack->applyVolumeShaper(configuration, operation);
2277    }
2278    return VolumeShaper::Status(INVALID_OPERATION);
2279}
2280
2281sp<VolumeShaper::State> MediaPlayerService::AudioOutput::getVolumeShaperState(int id)
2282{
2283    Mutex::Autolock lock(mLock);
2284    if (mTrack != 0) {
2285        return mTrack->getVolumeShaperState(id);
2286    }
2287    return nullptr;
2288}
2289
2290// static
2291void MediaPlayerService::AudioOutput::CallbackWrapper(
2292        int event, void *cookie, void *info) {
2293    //ALOGV("callbackwrapper");
2294    CallbackData *data = (CallbackData*)cookie;
2295    // lock to ensure we aren't caught in the middle of a track switch.
2296    data->lock();
2297    AudioOutput *me = data->getOutput();
2298    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
2299    if (me == NULL) {
2300        // no output set, likely because the track was scheduled to be reused
2301        // by another player, but the format turned out to be incompatible.
2302        data->unlock();
2303        if (buffer != NULL) {
2304            buffer->size = 0;
2305        }
2306        return;
2307    }
2308
2309    switch(event) {
2310    case AudioTrack::EVENT_MORE_DATA: {
2311        size_t actualSize = (*me->mCallback)(
2312                me, buffer->raw, buffer->size, me->mCallbackCookie,
2313                CB_EVENT_FILL_BUFFER);
2314
2315        // Log when no data is returned from the callback.
2316        // (1) We may have no data (especially with network streaming sources).
2317        // (2) We may have reached the EOS and the audio track is not stopped yet.
2318        // Note that AwesomePlayer/AudioPlayer will only return zero size when it reaches the EOS.
2319        // NuPlayerRenderer will return zero when it doesn't have data (it doesn't block to fill).
2320        //
2321        // This is a benign busy-wait, with the next data request generated 10 ms or more later;
2322        // nevertheless for power reasons, we don't want to see too many of these.
2323
2324        ALOGV_IF(actualSize == 0 && buffer->size > 0, "callbackwrapper: empty buffer returned");
2325
2326        buffer->size = actualSize;
2327        } break;
2328
2329    case AudioTrack::EVENT_STREAM_END:
2330        // currently only occurs for offloaded callbacks
2331        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
2332        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
2333                me->mCallbackCookie, CB_EVENT_STREAM_END);
2334        break;
2335
2336    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
2337        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
2338        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
2339                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
2340        break;
2341
2342    case AudioTrack::EVENT_UNDERRUN:
2343        // This occurs when there is no data available, typically
2344        // when there is a failure to supply data to the AudioTrack.  It can also
2345        // occur in non-offloaded mode when the audio device comes out of standby.
2346        //
2347        // If an AudioTrack underruns it outputs silence. Since this happens suddenly
2348        // it may sound like an audible pop or glitch.
2349        //
2350        // The underrun event is sent once per track underrun; the condition is reset
2351        // when more data is sent to the AudioTrack.
2352        ALOGD("callbackwrapper: EVENT_UNDERRUN (discarded)");
2353        break;
2354
2355    default:
2356        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
2357    }
2358
2359    data->unlock();
2360}
2361
2362audio_session_t MediaPlayerService::AudioOutput::getSessionId() const
2363{
2364    Mutex::Autolock lock(mLock);
2365    return mSessionId;
2366}
2367
2368uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
2369{
2370    Mutex::Autolock lock(mLock);
2371    if (mTrack == 0) return 0;
2372    return mTrack->getSampleRate();
2373}
2374
2375int64_t MediaPlayerService::AudioOutput::getBufferDurationInUs() const
2376{
2377    Mutex::Autolock lock(mLock);
2378    if (mTrack == 0) {
2379        return 0;
2380    }
2381    int64_t duration;
2382    if (mTrack->getBufferDurationInUs(&duration) != OK) {
2383        return 0;
2384    }
2385    return duration;
2386}
2387
2388////////////////////////////////////////////////////////////////////////////////
2389
2390struct CallbackThread : public Thread {
2391    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
2392                   MediaPlayerBase::AudioSink::AudioCallback cb,
2393                   void *cookie);
2394
2395protected:
2396    virtual ~CallbackThread();
2397
2398    virtual bool threadLoop();
2399
2400private:
2401    wp<MediaPlayerBase::AudioSink> mSink;
2402    MediaPlayerBase::AudioSink::AudioCallback mCallback;
2403    void *mCookie;
2404    void *mBuffer;
2405    size_t mBufferSize;
2406
2407    CallbackThread(const CallbackThread &);
2408    CallbackThread &operator=(const CallbackThread &);
2409};
2410
2411CallbackThread::CallbackThread(
2412        const wp<MediaPlayerBase::AudioSink> &sink,
2413        MediaPlayerBase::AudioSink::AudioCallback cb,
2414        void *cookie)
2415    : mSink(sink),
2416      mCallback(cb),
2417      mCookie(cookie),
2418      mBuffer(NULL),
2419      mBufferSize(0) {
2420}
2421
2422CallbackThread::~CallbackThread() {
2423    if (mBuffer) {
2424        free(mBuffer);
2425        mBuffer = NULL;
2426    }
2427}
2428
2429bool CallbackThread::threadLoop() {
2430    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
2431    if (sink == NULL) {
2432        return false;
2433    }
2434
2435    if (mBuffer == NULL) {
2436        mBufferSize = sink->bufferSize();
2437        mBuffer = malloc(mBufferSize);
2438    }
2439
2440    size_t actualSize =
2441        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
2442                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
2443
2444    if (actualSize > 0) {
2445        sink->write(mBuffer, actualSize);
2446        // Could return false on sink->write() error or short count.
2447        // Not necessarily appropriate but would work for AudioCache behavior.
2448    }
2449
2450    return true;
2451}
2452
2453////////////////////////////////////////////////////////////////////////////////
2454
2455void MediaPlayerService::addBatteryData(uint32_t params)
2456{
2457    Mutex::Autolock lock(mLock);
2458
2459    int32_t time = systemTime() / 1000000L;
2460
2461    // change audio output devices. This notification comes from AudioFlinger
2462    if ((params & kBatteryDataSpeakerOn)
2463            || (params & kBatteryDataOtherAudioDeviceOn)) {
2464
2465        int deviceOn[NUM_AUDIO_DEVICES];
2466        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2467            deviceOn[i] = 0;
2468        }
2469
2470        if ((params & kBatteryDataSpeakerOn)
2471                && (params & kBatteryDataOtherAudioDeviceOn)) {
2472            deviceOn[SPEAKER_AND_OTHER] = 1;
2473        } else if (params & kBatteryDataSpeakerOn) {
2474            deviceOn[SPEAKER] = 1;
2475        } else {
2476            deviceOn[OTHER_AUDIO_DEVICE] = 1;
2477        }
2478
2479        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2480            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
2481
2482                if (mBatteryAudio.refCount > 0) { // if playing audio
2483                    if (!deviceOn[i]) {
2484                        mBatteryAudio.lastTime[i] += time;
2485                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2486                        mBatteryAudio.lastTime[i] = 0;
2487                    } else {
2488                        mBatteryAudio.lastTime[i] = 0 - time;
2489                    }
2490                }
2491
2492                mBatteryAudio.deviceOn[i] = deviceOn[i];
2493            }
2494        }
2495        return;
2496    }
2497
2498    // an audio stream is started
2499    if (params & kBatteryDataAudioFlingerStart) {
2500        // record the start time only if currently no other audio
2501        // is being played
2502        if (mBatteryAudio.refCount == 0) {
2503            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2504                if (mBatteryAudio.deviceOn[i]) {
2505                    mBatteryAudio.lastTime[i] -= time;
2506                }
2507            }
2508        }
2509
2510        mBatteryAudio.refCount ++;
2511        return;
2512
2513    } else if (params & kBatteryDataAudioFlingerStop) {
2514        if (mBatteryAudio.refCount <= 0) {
2515            ALOGW("Battery track warning: refCount is <= 0");
2516            return;
2517        }
2518
2519        // record the stop time only if currently this is the only
2520        // audio being played
2521        if (mBatteryAudio.refCount == 1) {
2522            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2523                if (mBatteryAudio.deviceOn[i]) {
2524                    mBatteryAudio.lastTime[i] += time;
2525                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2526                    mBatteryAudio.lastTime[i] = 0;
2527                }
2528            }
2529        }
2530
2531        mBatteryAudio.refCount --;
2532        return;
2533    }
2534
2535    uid_t uid = IPCThreadState::self()->getCallingUid();
2536    if (uid == AID_MEDIA) {
2537        return;
2538    }
2539    int index = mBatteryData.indexOfKey(uid);
2540
2541    if (index < 0) { // create a new entry for this UID
2542        BatteryUsageInfo info;
2543        info.audioTotalTime = 0;
2544        info.videoTotalTime = 0;
2545        info.audioLastTime = 0;
2546        info.videoLastTime = 0;
2547        info.refCount = 0;
2548
2549        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2550            ALOGE("Battery track error: no memory for new app");
2551            return;
2552        }
2553    }
2554
2555    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2556
2557    if (params & kBatteryDataCodecStarted) {
2558        if (params & kBatteryDataTrackAudio) {
2559            info.audioLastTime -= time;
2560            info.refCount ++;
2561        }
2562        if (params & kBatteryDataTrackVideo) {
2563            info.videoLastTime -= time;
2564            info.refCount ++;
2565        }
2566    } else {
2567        if (info.refCount == 0) {
2568            ALOGW("Battery track warning: refCount is already 0");
2569            return;
2570        } else if (info.refCount < 0) {
2571            ALOGE("Battery track error: refCount < 0");
2572            mBatteryData.removeItem(uid);
2573            return;
2574        }
2575
2576        if (params & kBatteryDataTrackAudio) {
2577            info.audioLastTime += time;
2578            info.refCount --;
2579        }
2580        if (params & kBatteryDataTrackVideo) {
2581            info.videoLastTime += time;
2582            info.refCount --;
2583        }
2584
2585        // no stream is being played by this UID
2586        if (info.refCount == 0) {
2587            info.audioTotalTime += info.audioLastTime;
2588            info.audioLastTime = 0;
2589            info.videoTotalTime += info.videoLastTime;
2590            info.videoLastTime = 0;
2591        }
2592    }
2593}
2594
2595status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2596    Mutex::Autolock lock(mLock);
2597
2598    // audio output devices usage
2599    int32_t time = systemTime() / 1000000L; //in ms
2600    int32_t totalTime;
2601
2602    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2603        totalTime = mBatteryAudio.totalTime[i];
2604
2605        if (mBatteryAudio.deviceOn[i]
2606            && (mBatteryAudio.lastTime[i] != 0)) {
2607                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2608                totalTime += tmpTime;
2609        }
2610
2611        reply->writeInt32(totalTime);
2612        // reset the total time
2613        mBatteryAudio.totalTime[i] = 0;
2614   }
2615
2616    // codec usage
2617    BatteryUsageInfo info;
2618    int size = mBatteryData.size();
2619
2620    reply->writeInt32(size);
2621    int i = 0;
2622
2623    while (i < size) {
2624        info = mBatteryData.valueAt(i);
2625
2626        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2627        reply->writeInt32(info.audioTotalTime);
2628        reply->writeInt32(info.videoTotalTime);
2629
2630        info.audioTotalTime = 0;
2631        info.videoTotalTime = 0;
2632
2633        // remove the UID entry where no stream is being played
2634        if (info.refCount <= 0) {
2635            mBatteryData.removeItemsAt(i);
2636            size --;
2637            i --;
2638        }
2639        i++;
2640    }
2641    return NO_ERROR;
2642}
2643} // namespace android
2644