MediaPlayerService.cpp revision 55203e2e29428c2c7bd830d731f5e6ed890d9a10 
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/IBatteryStats.h>
38#include <binder/IPCThreadState.h>
39#include <binder/IServiceManager.h>
40#include <binder/MemoryHeapBase.h>
41#include <binder/MemoryBase.h>
42#include <gui/Surface.h>
43#include <utils/Errors.h>  // for status_t
44#include <utils/String8.h>
45#include <utils/SystemClock.h>
46#include <utils/Timers.h>
47#include <utils/Vector.h>
48
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/AudioPlayer.h>
61#include <media/stagefright/foundation/ADebug.h>
62#include <media/stagefright/foundation/ALooperRoster.h>
63
64#include <system/audio.h>
65
66#include <private/android_filesystem_config.h>
67
68#include "ActivityManager.h"
69#include "MediaRecorderClient.h"
70#include "MediaPlayerService.h"
71#include "MetadataRetrieverClient.h"
72#include "MediaPlayerFactory.h"
73
74#include "TestPlayerStub.h"
75#include "StagefrightPlayer.h"
76#include "nuplayer/NuPlayerDriver.h"
77
78#include <OMX.h>
79
80#include "Crypto.h"
81#include "Drm.h"
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
97// FIXME: Move all the metadata related function in the Metadata.cpp
98
99
100// Unmarshall a filter from a Parcel.
101// Filter format in a parcel:
102//
103//  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
104// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
105// |                       number of entries (n)                   |
106// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
107// |                       metadata type 1                         |
108// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
109// |                       metadata type 2                         |
110// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
111//  ....
112// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
113// |                       metadata type n                         |
114// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
115//
116// @param p Parcel that should start with a filter.
117// @param[out] filter On exit contains the list of metadata type to be
118//                    filtered.
119// @param[out] status On exit contains the status code to be returned.
120// @return true if the parcel starts with a valid filter.
121bool unmarshallFilter(const Parcel& p,
122                      Metadata::Filter *filter,
123                      status_t *status)
124{
125    int32_t val;
126    if (p.readInt32(&val) != OK)
127    {
128        ALOGE("Failed to read filter's length");
129        *status = NOT_ENOUGH_DATA;
130        return false;
131    }
132
133    if( val > kMaxFilterSize || val < 0)
134    {
135        ALOGE("Invalid filter len %d", val);
136        *status = BAD_VALUE;
137        return false;
138    }
139
140    const size_t num = val;
141
142    filter->clear();
143    filter->setCapacity(num);
144
145    size_t size = num * sizeof(Metadata::Type);
146
147
148    if (p.dataAvail() < size)
149    {
150        ALOGE("Filter too short expected %d but got %d", size, p.dataAvail());
151        *status = NOT_ENOUGH_DATA;
152        return false;
153    }
154
155    const Metadata::Type *data =
156            static_cast<const Metadata::Type*>(p.readInplace(size));
157
158    if (NULL == data)
159    {
160        ALOGE("Filter had no data");
161        *status = BAD_VALUE;
162        return false;
163    }
164
165    // TODO: The stl impl of vector would be more efficient here
166    // because it degenerates into a memcpy on pod types. Try to
167    // replace later or use stl::set.
168    for (size_t i = 0; i < num; ++i)
169    {
170        filter->add(*data);
171        ++data;
172    }
173    *status = OK;
174    return true;
175}
176
177// @param filter Of metadata type.
178// @param val To be searched.
179// @return true if a match was found.
180bool findMetadata(const Metadata::Filter& filter, const int32_t val)
181{
182    // Deal with empty and ANY right away
183    if (filter.isEmpty()) return false;
184    if (filter[0] == Metadata::kAny) return true;
185
186    return filter.indexOf(val) >= 0;
187}
188
189}  // anonymous namespace
190
191
192namespace {
193using android::Parcel;
194using android::String16;
195
196// marshalling tag indicating flattened utf16 tags
197// keep in sync with frameworks/base/media/java/android/media/AudioAttributes.java
198const int32_t kAudioAttributesMarshallTagFlattenTags = 1;
199
200// Audio attributes format in a parcel:
201//
202//  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
203// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
204// |                       usage                                   |
205// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
206// |                       content_type                            |
207// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
208// |                       source                                  |
209// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
210// |                       flags                                   |
211// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
212// |                       kAudioAttributesMarshallTagFlattenTags  | // ignore tags if not found
213// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
214// |                       flattened tags in UTF16                 |
215// |                         ...                                   |
216// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
217//
218// @param p Parcel that contains audio attributes.
219// @param[out] attributes On exit points to an initialized audio_attributes_t structure
220// @param[out] status On exit contains the status code to be returned.
221void unmarshallAudioAttributes(const Parcel& parcel, audio_attributes_t *attributes)
222{
223    attributes->usage = (audio_usage_t) parcel.readInt32();
224    attributes->content_type = (audio_content_type_t) parcel.readInt32();
225    attributes->source = (audio_source_t) parcel.readInt32();
226    attributes->flags = (audio_flags_mask_t) parcel.readInt32();
227    const bool hasFlattenedTag = (parcel.readInt32() == kAudioAttributesMarshallTagFlattenTags);
228    if (hasFlattenedTag) {
229        // the tags are UTF16, convert to UTF8
230        String16 tags = parcel.readString16();
231        ssize_t realTagSize = utf16_to_utf8_length(tags.string(), tags.size());
232        if (realTagSize <= 0) {
233            strcpy(attributes->tags, "");
234        } else {
235            // copy the flattened string into the attributes as the destination for the conversion:
236            // copying array size -1, array for tags was calloc'd, no need to NULL-terminate it
237            size_t tagSize = realTagSize > AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 ?
238                    AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 : realTagSize;
239            utf16_to_utf8(tags.string(), tagSize, attributes->tags);
240        }
241    } else {
242        ALOGE("unmarshallAudioAttributes() received unflattened tags, ignoring tag values");
243        strcpy(attributes->tags, "");
244    }
245}
246} // anonymous namespace
247
248
249namespace android {
250
251extern ALooperRoster gLooperRoster;
252
253
254static bool checkPermission(const char* permissionString) {
255#ifndef HAVE_ANDROID_OS
256    return true;
257#endif
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    const sp<IServiceManager> sm(defaultServiceManager());
291    if (sm != NULL) {
292        const String16 name("batterystats");
293        sp<IBatteryStats> batteryStats =
294                interface_cast<IBatteryStats>(sm->getService(name));
295        if (batteryStats != NULL) {
296            batteryStats->noteResetVideo();
297            batteryStats->noteResetAudio();
298        }
299    }
300
301    MediaPlayerFactory::registerBuiltinFactories();
302}
303
304MediaPlayerService::~MediaPlayerService()
305{
306    ALOGV("MediaPlayerService destroyed");
307}
308
309sp<IMediaRecorder> MediaPlayerService::createMediaRecorder()
310{
311    pid_t pid = IPCThreadState::self()->getCallingPid();
312    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
313    wp<MediaRecorderClient> w = recorder;
314    Mutex::Autolock lock(mLock);
315    mMediaRecorderClients.add(w);
316    ALOGV("Create new media recorder client from pid %d", pid);
317    return recorder;
318}
319
320void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
321{
322    Mutex::Autolock lock(mLock);
323    mMediaRecorderClients.remove(client);
324    ALOGV("Delete media recorder client");
325}
326
327sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
328{
329    pid_t pid = IPCThreadState::self()->getCallingPid();
330    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
331    ALOGV("Create new media retriever from pid %d", pid);
332    return retriever;
333}
334
335sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
336        int audioSessionId)
337{
338    pid_t pid = IPCThreadState::self()->getCallingPid();
339    int32_t connId = android_atomic_inc(&mNextConnId);
340
341    sp<Client> c = new Client(
342            this, pid, connId, client, audioSessionId,
343            IPCThreadState::self()->getCallingUid());
344
345    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
346         IPCThreadState::self()->getCallingUid());
347
348    wp<Client> w = c;
349    {
350        Mutex::Autolock lock(mLock);
351        mClients.add(w);
352    }
353    return c;
354}
355
356sp<IMediaCodecList> MediaPlayerService::getCodecList() const {
357    return MediaCodecList::getLocalInstance();
358}
359
360sp<IOMX> MediaPlayerService::getOMX() {
361    Mutex::Autolock autoLock(mLock);
362
363    if (mOMX.get() == NULL) {
364        mOMX = new OMX;
365    }
366
367    return mOMX;
368}
369
370sp<ICrypto> MediaPlayerService::makeCrypto() {
371    return new Crypto;
372}
373
374sp<IDrm> MediaPlayerService::makeDrm() {
375    return new Drm;
376}
377
378sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
379    return new HDCP(createEncryptionModule);
380}
381
382sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
383        const sp<IRemoteDisplayClient>& client, const String8& iface) {
384    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
385        return NULL;
386    }
387
388    return new RemoteDisplay(client, iface.string());
389}
390
391status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
392{
393    const size_t SIZE = 256;
394    char buffer[SIZE];
395    String8 result;
396
397    result.append(" AudioOutput\n");
398    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
399            mStreamType, mLeftVolume, mRightVolume);
400    result.append(buffer);
401    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
402            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
403    result.append(buffer);
404    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
405            mAuxEffectId, mSendLevel);
406    result.append(buffer);
407
408    ::write(fd, result.string(), result.size());
409    if (mTrack != 0) {
410        mTrack->dump(fd, args);
411    }
412    return NO_ERROR;
413}
414
415status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
416{
417    const size_t SIZE = 256;
418    char buffer[SIZE];
419    String8 result;
420    result.append(" Client\n");
421    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
422            mPid, mConnId, mStatus, mLoop?"true": "false");
423    result.append(buffer);
424    write(fd, result.string(), result.size());
425    if (mPlayer != NULL) {
426        mPlayer->dump(fd, args);
427    }
428    if (mAudioOutput != 0) {
429        mAudioOutput->dump(fd, args);
430    }
431    write(fd, "\n", 1);
432    return NO_ERROR;
433}
434
435/**
436 * The only arguments this understands right now are -c, -von and -voff,
437 * which are parsed by ALooperRoster::dump()
438 */
439status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
440{
441    const size_t SIZE = 256;
442    char buffer[SIZE];
443    String8 result;
444    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
445        snprintf(buffer, SIZE, "Permission Denial: "
446                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
447                IPCThreadState::self()->getCallingPid(),
448                IPCThreadState::self()->getCallingUid());
449        result.append(buffer);
450    } else {
451        Mutex::Autolock lock(mLock);
452        for (int i = 0, n = mClients.size(); i < n; ++i) {
453            sp<Client> c = mClients[i].promote();
454            if (c != 0) c->dump(fd, args);
455        }
456        if (mMediaRecorderClients.size() == 0) {
457                result.append(" No media recorder client\n\n");
458        } else {
459            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
460                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
461                if (c != 0) {
462                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
463                    result.append(buffer);
464                    write(fd, result.string(), result.size());
465                    result = "\n";
466                    c->dump(fd, args);
467                }
468            }
469        }
470
471        result.append(" Files opened and/or mapped:\n");
472        snprintf(buffer, SIZE, "/proc/%d/maps", getpid());
473        FILE *f = fopen(buffer, "r");
474        if (f) {
475            while (!feof(f)) {
476                fgets(buffer, SIZE, f);
477                if (strstr(buffer, " /storage/") ||
478                    strstr(buffer, " /system/sounds/") ||
479                    strstr(buffer, " /data/") ||
480                    strstr(buffer, " /system/media/")) {
481                    result.append("  ");
482                    result.append(buffer);
483                }
484            }
485            fclose(f);
486        } else {
487            result.append("couldn't open ");
488            result.append(buffer);
489            result.append("\n");
490        }
491
492        snprintf(buffer, SIZE, "/proc/%d/fd", getpid());
493        DIR *d = opendir(buffer);
494        if (d) {
495            struct dirent *ent;
496            while((ent = readdir(d)) != NULL) {
497                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
498                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", getpid(), ent->d_name);
499                    struct stat s;
500                    if (lstat(buffer, &s) == 0) {
501                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
502                            char linkto[256];
503                            int len = readlink(buffer, linkto, sizeof(linkto));
504                            if(len > 0) {
505                                if(len > 255) {
506                                    linkto[252] = '.';
507                                    linkto[253] = '.';
508                                    linkto[254] = '.';
509                                    linkto[255] = 0;
510                                } else {
511                                    linkto[len] = 0;
512                                }
513                                if (strstr(linkto, "/storage/") == linkto ||
514                                    strstr(linkto, "/system/sounds/") == linkto ||
515                                    strstr(linkto, "/data/") == linkto ||
516                                    strstr(linkto, "/system/media/") == linkto) {
517                                    result.append("  ");
518                                    result.append(buffer);
519                                    result.append(" -> ");
520                                    result.append(linkto);
521                                    result.append("\n");
522                                }
523                            }
524                        } else {
525                            result.append("  unexpected type for ");
526                            result.append(buffer);
527                            result.append("\n");
528                        }
529                    }
530                }
531            }
532            closedir(d);
533        } else {
534            result.append("couldn't open ");
535            result.append(buffer);
536            result.append("\n");
537        }
538
539        gLooperRoster.dump(fd, args);
540
541        bool dumpMem = false;
542        for (size_t i = 0; i < args.size(); i++) {
543            if (args[i] == String16("-m")) {
544                dumpMem = true;
545            }
546        }
547        if (dumpMem) {
548            dumpMemoryAddresses(fd);
549        }
550    }
551    write(fd, result.string(), result.size());
552    return NO_ERROR;
553}
554
555void MediaPlayerService::removeClient(wp<Client> client)
556{
557    Mutex::Autolock lock(mLock);
558    mClients.remove(client);
559}
560
561MediaPlayerService::Client::Client(
562        const sp<MediaPlayerService>& service, pid_t pid,
563        int32_t connId, const sp<IMediaPlayerClient>& client,
564        int audioSessionId, uid_t uid)
565{
566    ALOGV("Client(%d) constructor", connId);
567    mPid = pid;
568    mConnId = connId;
569    mService = service;
570    mClient = client;
571    mLoop = false;
572    mStatus = NO_INIT;
573    mAudioSessionId = audioSessionId;
574    mUID = uid;
575    mRetransmitEndpointValid = false;
576    mAudioAttributes = NULL;
577
578#if CALLBACK_ANTAGONIZER
579    ALOGD("create Antagonizer");
580    mAntagonizer = new Antagonizer(notify, this);
581#endif
582}
583
584MediaPlayerService::Client::~Client()
585{
586    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
587    mAudioOutput.clear();
588    wp<Client> client(this);
589    disconnect();
590    mService->removeClient(client);
591    if (mAudioAttributes != NULL) {
592        free(mAudioAttributes);
593    }
594}
595
596void MediaPlayerService::Client::disconnect()
597{
598    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
599    // grab local reference and clear main reference to prevent future
600    // access to object
601    sp<MediaPlayerBase> p;
602    {
603        Mutex::Autolock l(mLock);
604        p = mPlayer;
605        mClient.clear();
606    }
607
608    mPlayer.clear();
609
610    // clear the notification to prevent callbacks to dead client
611    // and reset the player. We assume the player will serialize
612    // access to itself if necessary.
613    if (p != 0) {
614        p->setNotifyCallback(0, 0);
615#if CALLBACK_ANTAGONIZER
616        ALOGD("kill Antagonizer");
617        mAntagonizer->kill();
618#endif
619        p->reset();
620    }
621
622    disconnectNativeWindow();
623
624    IPCThreadState::self()->flushCommands();
625}
626
627sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
628{
629    // determine if we have the right player type
630    sp<MediaPlayerBase> p = mPlayer;
631    if ((p != NULL) && (p->playerType() != playerType)) {
632        ALOGV("delete player");
633        p.clear();
634    }
635    if (p == NULL) {
636        p = MediaPlayerFactory::createPlayer(playerType, this, notify);
637    }
638
639    if (p != NULL) {
640        p->setUID(mUID);
641    }
642
643    return p;
644}
645
646sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
647        player_type playerType)
648{
649    ALOGV("player type = %d", playerType);
650
651    // create the right type of player
652    sp<MediaPlayerBase> p = createPlayer(playerType);
653    if (p == NULL) {
654        return p;
655    }
656
657    if (!p->hardwareOutput()) {
658        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
659                mPid, mAudioAttributes);
660        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
661    }
662
663    return p;
664}
665
666void MediaPlayerService::Client::setDataSource_post(
667        const sp<MediaPlayerBase>& p,
668        status_t status)
669{
670    ALOGV(" setDataSource");
671    mStatus = status;
672    if (mStatus != OK) {
673        ALOGE("  error: %d", mStatus);
674        return;
675    }
676
677    // Set the re-transmission endpoint if one was chosen.
678    if (mRetransmitEndpointValid) {
679        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
680        if (mStatus != NO_ERROR) {
681            ALOGE("setRetransmitEndpoint error: %d", mStatus);
682        }
683    }
684
685    if (mStatus == OK) {
686        mPlayer = p;
687    }
688}
689
690status_t MediaPlayerService::Client::setDataSource(
691        const sp<IMediaHTTPService> &httpService,
692        const char *url,
693        const KeyedVector<String8, String8> *headers)
694{
695    ALOGV("setDataSource(%s)", url);
696    if (url == NULL)
697        return UNKNOWN_ERROR;
698
699    if ((strncmp(url, "http://", 7) == 0) ||
700        (strncmp(url, "https://", 8) == 0) ||
701        (strncmp(url, "rtsp://", 7) == 0)) {
702        if (!checkPermission("android.permission.INTERNET")) {
703            return PERMISSION_DENIED;
704        }
705    }
706
707    if (strncmp(url, "content://", 10) == 0) {
708        // get a filedescriptor for the content Uri and
709        // pass it to the setDataSource(fd) method
710
711        String16 url16(url);
712        int fd = android::openContentProviderFile(url16);
713        if (fd < 0)
714        {
715            ALOGE("Couldn't open fd for %s", url);
716            return UNKNOWN_ERROR;
717        }
718        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
719        close(fd);
720        return mStatus;
721    } else {
722        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
723        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
724        if (p == NULL) {
725            return NO_INIT;
726        }
727
728        setDataSource_post(p, p->setDataSource(httpService, url, headers));
729        return mStatus;
730    }
731}
732
733status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
734{
735    ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
736    struct stat sb;
737    int ret = fstat(fd, &sb);
738    if (ret != 0) {
739        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
740        return UNKNOWN_ERROR;
741    }
742
743    ALOGV("st_dev  = %llu", sb.st_dev);
744    ALOGV("st_mode = %u", sb.st_mode);
745    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
746    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
747    ALOGV("st_size = %llu", sb.st_size);
748
749    if (offset >= sb.st_size) {
750        ALOGE("offset error");
751        return UNKNOWN_ERROR;
752    }
753    if (offset + length > sb.st_size) {
754        length = sb.st_size - offset;
755        ALOGV("calculated length = %lld", length);
756    }
757
758    player_type playerType = MediaPlayerFactory::getPlayerType(this,
759                                                               fd,
760                                                               offset,
761                                                               length);
762    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
763    if (p == NULL) {
764        return NO_INIT;
765    }
766
767    // now set data source
768    setDataSource_post(p, p->setDataSource(fd, offset, length));
769    return mStatus;
770}
771
772status_t MediaPlayerService::Client::setDataSource(
773        const sp<IStreamSource> &source) {
774    // create the right type of player
775    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
776    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
777    if (p == NULL) {
778        return NO_INIT;
779    }
780
781    // now set data source
782    setDataSource_post(p, p->setDataSource(source));
783    return mStatus;
784}
785
786void MediaPlayerService::Client::disconnectNativeWindow() {
787    if (mConnectedWindow != NULL) {
788        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
789                NATIVE_WINDOW_API_MEDIA);
790
791        if (err != OK) {
792            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
793                    strerror(-err), err);
794        }
795    }
796    mConnectedWindow.clear();
797}
798
799status_t MediaPlayerService::Client::setVideoSurfaceTexture(
800        const sp<IGraphicBufferProducer>& bufferProducer)
801{
802    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
803    sp<MediaPlayerBase> p = getPlayer();
804    if (p == 0) return UNKNOWN_ERROR;
805
806    sp<IBinder> binder(IInterface::asBinder(bufferProducer));
807    if (mConnectedWindowBinder == binder) {
808        return OK;
809    }
810
811    sp<ANativeWindow> anw;
812    if (bufferProducer != NULL) {
813        anw = new Surface(bufferProducer, true /* controlledByApp */);
814        status_t err = native_window_api_connect(anw.get(),
815                NATIVE_WINDOW_API_MEDIA);
816
817        if (err != OK) {
818            ALOGE("setVideoSurfaceTexture failed: %d", err);
819            // Note that we must do the reset before disconnecting from the ANW.
820            // Otherwise queue/dequeue calls could be made on the disconnected
821            // ANW, which may result in errors.
822            reset();
823
824            disconnectNativeWindow();
825
826            return err;
827        }
828    }
829
830    // Note that we must set the player's new GraphicBufferProducer before
831    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
832    // on the disconnected ANW, which may result in errors.
833    status_t err = p->setVideoSurfaceTexture(bufferProducer);
834
835    disconnectNativeWindow();
836
837    mConnectedWindow = anw;
838
839    if (err == OK) {
840        mConnectedWindowBinder = binder;
841    } else {
842        disconnectNativeWindow();
843    }
844
845    return err;
846}
847
848status_t MediaPlayerService::Client::invoke(const Parcel& request,
849                                            Parcel *reply)
850{
851    sp<MediaPlayerBase> p = getPlayer();
852    if (p == NULL) return UNKNOWN_ERROR;
853    return p->invoke(request, reply);
854}
855
856// This call doesn't need to access the native player.
857status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
858{
859    status_t status;
860    media::Metadata::Filter allow, drop;
861
862    if (unmarshallFilter(filter, &allow, &status) &&
863        unmarshallFilter(filter, &drop, &status)) {
864        Mutex::Autolock lock(mLock);
865
866        mMetadataAllow = allow;
867        mMetadataDrop = drop;
868    }
869    return status;
870}
871
872status_t MediaPlayerService::Client::getMetadata(
873        bool update_only, bool /*apply_filter*/, Parcel *reply)
874{
875    sp<MediaPlayerBase> player = getPlayer();
876    if (player == 0) return UNKNOWN_ERROR;
877
878    status_t status;
879    // Placeholder for the return code, updated by the caller.
880    reply->writeInt32(-1);
881
882    media::Metadata::Filter ids;
883
884    // We don't block notifications while we fetch the data. We clear
885    // mMetadataUpdated first so we don't lose notifications happening
886    // during the rest of this call.
887    {
888        Mutex::Autolock lock(mLock);
889        if (update_only) {
890            ids = mMetadataUpdated;
891        }
892        mMetadataUpdated.clear();
893    }
894
895    media::Metadata metadata(reply);
896
897    metadata.appendHeader();
898    status = player->getMetadata(ids, reply);
899
900    if (status != OK) {
901        metadata.resetParcel();
902        ALOGE("getMetadata failed %d", status);
903        return status;
904    }
905
906    // FIXME: Implement filtering on the result. Not critical since
907    // filtering takes place on the update notifications already. This
908    // would be when all the metadata are fetch and a filter is set.
909
910    // Everything is fine, update the metadata length.
911    metadata.updateLength();
912    return OK;
913}
914
915status_t MediaPlayerService::Client::prepareAsync()
916{
917    ALOGV("[%d] prepareAsync", mConnId);
918    sp<MediaPlayerBase> p = getPlayer();
919    if (p == 0) return UNKNOWN_ERROR;
920    status_t ret = p->prepareAsync();
921#if CALLBACK_ANTAGONIZER
922    ALOGD("start Antagonizer");
923    if (ret == NO_ERROR) mAntagonizer->start();
924#endif
925    return ret;
926}
927
928status_t MediaPlayerService::Client::start()
929{
930    ALOGV("[%d] start", mConnId);
931    sp<MediaPlayerBase> p = getPlayer();
932    if (p == 0) return UNKNOWN_ERROR;
933    p->setLooping(mLoop);
934    return p->start();
935}
936
937status_t MediaPlayerService::Client::stop()
938{
939    ALOGV("[%d] stop", mConnId);
940    sp<MediaPlayerBase> p = getPlayer();
941    if (p == 0) return UNKNOWN_ERROR;
942    return p->stop();
943}
944
945status_t MediaPlayerService::Client::pause()
946{
947    ALOGV("[%d] pause", mConnId);
948    sp<MediaPlayerBase> p = getPlayer();
949    if (p == 0) return UNKNOWN_ERROR;
950    return p->pause();
951}
952
953status_t MediaPlayerService::Client::isPlaying(bool* state)
954{
955    *state = false;
956    sp<MediaPlayerBase> p = getPlayer();
957    if (p == 0) return UNKNOWN_ERROR;
958    *state = p->isPlaying();
959    ALOGV("[%d] isPlaying: %d", mConnId, *state);
960    return NO_ERROR;
961}
962
963status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
964{
965    ALOGV("getCurrentPosition");
966    sp<MediaPlayerBase> p = getPlayer();
967    if (p == 0) return UNKNOWN_ERROR;
968    status_t ret = p->getCurrentPosition(msec);
969    if (ret == NO_ERROR) {
970        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
971    } else {
972        ALOGE("getCurrentPosition returned %d", ret);
973    }
974    return ret;
975}
976
977status_t MediaPlayerService::Client::getDuration(int *msec)
978{
979    ALOGV("getDuration");
980    sp<MediaPlayerBase> p = getPlayer();
981    if (p == 0) return UNKNOWN_ERROR;
982    status_t ret = p->getDuration(msec);
983    if (ret == NO_ERROR) {
984        ALOGV("[%d] getDuration = %d", mConnId, *msec);
985    } else {
986        ALOGE("getDuration returned %d", ret);
987    }
988    return ret;
989}
990
991status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
992    ALOGV("setNextPlayer");
993    Mutex::Autolock l(mLock);
994    sp<Client> c = static_cast<Client*>(player.get());
995    mNextClient = c;
996
997    if (c != NULL) {
998        if (mAudioOutput != NULL) {
999            mAudioOutput->setNextOutput(c->mAudioOutput);
1000        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1001            ALOGE("no current audio output");
1002        }
1003
1004        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1005            mPlayer->setNextPlayer(mNextClient->getPlayer());
1006        }
1007    }
1008
1009    return OK;
1010}
1011
1012status_t MediaPlayerService::Client::seekTo(int msec)
1013{
1014    ALOGV("[%d] seekTo(%d)", mConnId, msec);
1015    sp<MediaPlayerBase> p = getPlayer();
1016    if (p == 0) return UNKNOWN_ERROR;
1017    return p->seekTo(msec);
1018}
1019
1020status_t MediaPlayerService::Client::reset()
1021{
1022    ALOGV("[%d] reset", mConnId);
1023    mRetransmitEndpointValid = false;
1024    sp<MediaPlayerBase> p = getPlayer();
1025    if (p == 0) return UNKNOWN_ERROR;
1026    return p->reset();
1027}
1028
1029status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1030{
1031    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1032    // TODO: for hardware output, call player instead
1033    Mutex::Autolock l(mLock);
1034    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1035    return NO_ERROR;
1036}
1037
1038status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1039{
1040    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1041    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1042    unmarshallAudioAttributes(parcel, mAudioAttributes);
1043
1044    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1045            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1046            mAudioAttributes->tags);
1047
1048    if (mAudioOutput != 0) {
1049        mAudioOutput->setAudioAttributes(mAudioAttributes);
1050    }
1051    return NO_ERROR;
1052}
1053
1054status_t MediaPlayerService::Client::setLooping(int loop)
1055{
1056    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1057    mLoop = loop;
1058    sp<MediaPlayerBase> p = getPlayer();
1059    if (p != 0) return p->setLooping(loop);
1060    return NO_ERROR;
1061}
1062
1063status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1064{
1065    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1066
1067    // for hardware output, call player instead
1068    sp<MediaPlayerBase> p = getPlayer();
1069    {
1070      Mutex::Autolock l(mLock);
1071      if (p != 0 && p->hardwareOutput()) {
1072          MediaPlayerHWInterface* hwp =
1073                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1074          return hwp->setVolume(leftVolume, rightVolume);
1075      } else {
1076          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1077          return NO_ERROR;
1078      }
1079    }
1080
1081    return NO_ERROR;
1082}
1083
1084status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1085{
1086    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1087    Mutex::Autolock l(mLock);
1088    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1089    return NO_ERROR;
1090}
1091
1092status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1093{
1094    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1095    Mutex::Autolock l(mLock);
1096    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1097    return NO_ERROR;
1098}
1099
1100status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1101    ALOGV("[%d] setParameter(%d)", mConnId, key);
1102    switch (key) {
1103    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1104    {
1105        Mutex::Autolock l(mLock);
1106        return setAudioAttributes_l(request);
1107    }
1108    default:
1109        sp<MediaPlayerBase> p = getPlayer();
1110        if (p == 0) { return UNKNOWN_ERROR; }
1111        return p->setParameter(key, request);
1112    }
1113}
1114
1115status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1116    ALOGV("[%d] getParameter(%d)", mConnId, key);
1117    sp<MediaPlayerBase> p = getPlayer();
1118    if (p == 0) return UNKNOWN_ERROR;
1119    return p->getParameter(key, reply);
1120}
1121
1122status_t MediaPlayerService::Client::setRetransmitEndpoint(
1123        const struct sockaddr_in* endpoint) {
1124
1125    if (NULL != endpoint) {
1126        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1127        uint16_t p = ntohs(endpoint->sin_port);
1128        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1129                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1130    } else {
1131        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1132    }
1133
1134    sp<MediaPlayerBase> p = getPlayer();
1135
1136    // Right now, the only valid time to set a retransmit endpoint is before
1137    // player selection has been made (since the presence or absence of a
1138    // retransmit endpoint is going to determine which player is selected during
1139    // setDataSource).
1140    if (p != 0) return INVALID_OPERATION;
1141
1142    if (NULL != endpoint) {
1143        mRetransmitEndpoint = *endpoint;
1144        mRetransmitEndpointValid = true;
1145    } else {
1146        mRetransmitEndpointValid = false;
1147    }
1148
1149    return NO_ERROR;
1150}
1151
1152status_t MediaPlayerService::Client::getRetransmitEndpoint(
1153        struct sockaddr_in* endpoint)
1154{
1155    if (NULL == endpoint)
1156        return BAD_VALUE;
1157
1158    sp<MediaPlayerBase> p = getPlayer();
1159
1160    if (p != NULL)
1161        return p->getRetransmitEndpoint(endpoint);
1162
1163    if (!mRetransmitEndpointValid)
1164        return NO_INIT;
1165
1166    *endpoint = mRetransmitEndpoint;
1167
1168    return NO_ERROR;
1169}
1170
1171void MediaPlayerService::Client::notify(
1172        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1173{
1174    Client* client = static_cast<Client*>(cookie);
1175    if (client == NULL) {
1176        return;
1177    }
1178
1179    sp<IMediaPlayerClient> c;
1180    {
1181        Mutex::Autolock l(client->mLock);
1182        c = client->mClient;
1183        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1184            if (client->mAudioOutput != NULL)
1185                client->mAudioOutput->switchToNextOutput();
1186            client->mNextClient->start();
1187            client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1188        }
1189    }
1190
1191    if (MEDIA_INFO == msg &&
1192        MEDIA_INFO_METADATA_UPDATE == ext1) {
1193        const media::Metadata::Type metadata_type = ext2;
1194
1195        if(client->shouldDropMetadata(metadata_type)) {
1196            return;
1197        }
1198
1199        // Update the list of metadata that have changed. getMetadata
1200        // also access mMetadataUpdated and clears it.
1201        client->addNewMetadataUpdate(metadata_type);
1202    }
1203
1204    if (c != NULL) {
1205        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1206        c->notify(msg, ext1, ext2, obj);
1207    }
1208}
1209
1210
1211bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1212{
1213    Mutex::Autolock lock(mLock);
1214
1215    if (findMetadata(mMetadataDrop, code)) {
1216        return true;
1217    }
1218
1219    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1220        return false;
1221    } else {
1222        return true;
1223    }
1224}
1225
1226
1227void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1228    Mutex::Autolock lock(mLock);
1229    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1230        mMetadataUpdated.add(metadata_type);
1231    }
1232}
1233
1234#if CALLBACK_ANTAGONIZER
1235const int Antagonizer::interval = 10000; // 10 msecs
1236
1237Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1238    mExit(false), mActive(false), mClient(client), mCb(cb)
1239{
1240    createThread(callbackThread, this);
1241}
1242
1243void Antagonizer::kill()
1244{
1245    Mutex::Autolock _l(mLock);
1246    mActive = false;
1247    mExit = true;
1248    mCondition.wait(mLock);
1249}
1250
1251int Antagonizer::callbackThread(void* user)
1252{
1253    ALOGD("Antagonizer started");
1254    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1255    while (!p->mExit) {
1256        if (p->mActive) {
1257            ALOGV("send event");
1258            p->mCb(p->mClient, 0, 0, 0);
1259        }
1260        usleep(interval);
1261    }
1262    Mutex::Autolock _l(p->mLock);
1263    p->mCondition.signal();
1264    ALOGD("Antagonizer stopped");
1265    return 0;
1266}
1267#endif
1268
1269#undef LOG_TAG
1270#define LOG_TAG "AudioSink"
1271MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid, int pid,
1272        const audio_attributes_t* attr)
1273    : mCallback(NULL),
1274      mCallbackCookie(NULL),
1275      mCallbackData(NULL),
1276      mBytesWritten(0),
1277      mSessionId(sessionId),
1278      mUid(uid),
1279      mPid(pid),
1280      mFlags(AUDIO_OUTPUT_FLAG_NONE) {
1281    ALOGV("AudioOutput(%d)", sessionId);
1282    mStreamType = AUDIO_STREAM_MUSIC;
1283    mLeftVolume = 1.0;
1284    mRightVolume = 1.0;
1285    mPlaybackRatePermille = 1000;
1286    mSampleRateHz = 0;
1287    mMsecsPerFrame = 0;
1288    mAuxEffectId = 0;
1289    mSendLevel = 0.0;
1290    setMinBufferCount();
1291    mAttributes = attr;
1292}
1293
1294MediaPlayerService::AudioOutput::~AudioOutput()
1295{
1296    close();
1297    delete mCallbackData;
1298}
1299
1300void MediaPlayerService::AudioOutput::setMinBufferCount()
1301{
1302    char value[PROPERTY_VALUE_MAX];
1303    if (property_get("ro.kernel.qemu", value, 0)) {
1304        mIsOnEmulator = true;
1305        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1306    }
1307}
1308
1309bool MediaPlayerService::AudioOutput::isOnEmulator()
1310{
1311    setMinBufferCount();
1312    return mIsOnEmulator;
1313}
1314
1315int MediaPlayerService::AudioOutput::getMinBufferCount()
1316{
1317    setMinBufferCount();
1318    return mMinBufferCount;
1319}
1320
1321ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1322{
1323    if (mTrack == 0) return NO_INIT;
1324    return mTrack->frameCount() * frameSize();
1325}
1326
1327ssize_t MediaPlayerService::AudioOutput::frameCount() const
1328{
1329    if (mTrack == 0) return NO_INIT;
1330    return mTrack->frameCount();
1331}
1332
1333ssize_t MediaPlayerService::AudioOutput::channelCount() const
1334{
1335    if (mTrack == 0) return NO_INIT;
1336    return mTrack->channelCount();
1337}
1338
1339ssize_t MediaPlayerService::AudioOutput::frameSize() const
1340{
1341    if (mTrack == 0) return NO_INIT;
1342    return mTrack->frameSize();
1343}
1344
1345uint32_t MediaPlayerService::AudioOutput::latency () const
1346{
1347    if (mTrack == 0) return 0;
1348    return mTrack->latency();
1349}
1350
1351float MediaPlayerService::AudioOutput::msecsPerFrame() const
1352{
1353    return mMsecsPerFrame;
1354}
1355
1356status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1357{
1358    if (mTrack == 0) return NO_INIT;
1359    return mTrack->getPosition(position);
1360}
1361
1362status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1363{
1364    if (mTrack == 0) return NO_INIT;
1365    return mTrack->getTimestamp(ts);
1366}
1367
1368status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1369{
1370    if (mTrack == 0) return NO_INIT;
1371    *frameswritten = mBytesWritten / frameSize();
1372    return OK;
1373}
1374
1375status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1376{
1377    if (mTrack == 0) return NO_INIT;
1378    return mTrack->setParameters(keyValuePairs);
1379}
1380
1381String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1382{
1383    if (mTrack == 0) return String8::empty();
1384    return mTrack->getParameters(keys);
1385}
1386
1387void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1388    mAttributes = attributes;
1389}
1390
1391void MediaPlayerService::AudioOutput::deleteRecycledTrack()
1392{
1393    ALOGV("deleteRecycledTrack");
1394
1395    if (mRecycledTrack != 0) {
1396
1397        if (mCallbackData != NULL) {
1398            mCallbackData->setOutput(NULL);
1399            mCallbackData->endTrackSwitch();
1400        }
1401
1402        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1403            mRecycledTrack->flush();
1404        }
1405        // An offloaded track isn't flushed because the STREAM_END is reported
1406        // slightly prematurely to allow time for the gapless track switch
1407        // but this means that if we decide not to recycle the track there
1408        // could be a small amount of residual data still playing. We leave
1409        // AudioFlinger to drain the track.
1410
1411        mRecycledTrack.clear();
1412        delete mCallbackData;
1413        mCallbackData = NULL;
1414        close();
1415    }
1416}
1417
1418status_t MediaPlayerService::AudioOutput::open(
1419        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1420        audio_format_t format, int bufferCount,
1421        AudioCallback cb, void *cookie,
1422        audio_output_flags_t flags,
1423        const audio_offload_info_t *offloadInfo)
1424{
1425    mCallback = cb;
1426    mCallbackCookie = cookie;
1427
1428    // Check argument "bufferCount" against the mininum buffer count
1429    if (bufferCount < mMinBufferCount) {
1430        ALOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1431        bufferCount = mMinBufferCount;
1432
1433    }
1434    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1435                format, bufferCount, mSessionId, flags);
1436    uint32_t afSampleRate;
1437    size_t afFrameCount;
1438    size_t frameCount;
1439
1440    // offloading is only supported in callback mode for now.
1441    // offloadInfo must be present if offload flag is set
1442    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1443            ((cb == NULL) || (offloadInfo == NULL))) {
1444        return BAD_VALUE;
1445    }
1446
1447    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1448        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1449    } else {
1450        uint32_t afSampleRate;
1451        size_t afFrameCount;
1452
1453        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1454            return NO_INIT;
1455        }
1456        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1457            return NO_INIT;
1458        }
1459
1460        frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1461    }
1462
1463    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1464        channelMask = audio_channel_out_mask_from_count(channelCount);
1465        if (0 == channelMask) {
1466            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1467            return NO_INIT;
1468        }
1469    }
1470
1471    // Check whether we can recycle the track
1472    bool reuse = false;
1473    bool bothOffloaded = false;
1474
1475    if (mRecycledTrack != 0) {
1476        // check whether we are switching between two offloaded tracks
1477        bothOffloaded = (flags & mRecycledTrack->getFlags()
1478                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1479
1480        // check if the existing track can be reused as-is, or if a new track needs to be created.
1481        reuse = true;
1482
1483        if ((mCallbackData == NULL && mCallback != NULL) ||
1484                (mCallbackData != NULL && mCallback == NULL)) {
1485            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1486            ALOGV("can't chain callback and write");
1487            reuse = false;
1488        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1489                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1490            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1491                  mRecycledTrack->getSampleRate(), sampleRate,
1492                  mRecycledTrack->channelCount(), channelCount);
1493            reuse = false;
1494        } else if (flags != mFlags) {
1495            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1496            reuse = false;
1497        } else if (mRecycledTrack->format() != format) {
1498            reuse = false;
1499        }
1500    } else {
1501        ALOGV("no track available to recycle");
1502    }
1503
1504    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1505
1506    // If we can't recycle and both tracks are offloaded
1507    // we must close the previous output before opening a new one
1508    if (bothOffloaded && !reuse) {
1509        ALOGV("both offloaded and not recycling");
1510        deleteRecycledTrack();
1511    }
1512
1513    sp<AudioTrack> t;
1514    CallbackData *newcbd = NULL;
1515
1516    // We don't attempt to create a new track if we are recycling an
1517    // offloaded track. But, if we are recycling a non-offloaded or we
1518    // are switching where one is offloaded and one isn't then we create
1519    // the new track in advance so that we can read additional stream info
1520
1521    if (!(reuse && bothOffloaded)) {
1522        ALOGV("creating new AudioTrack");
1523
1524        if (mCallback != NULL) {
1525            newcbd = new CallbackData(this);
1526            t = new AudioTrack(
1527                    mStreamType,
1528                    sampleRate,
1529                    format,
1530                    channelMask,
1531                    frameCount,
1532                    flags,
1533                    CallbackWrapper,
1534                    newcbd,
1535                    0,  // notification frames
1536                    mSessionId,
1537                    AudioTrack::TRANSFER_CALLBACK,
1538                    offloadInfo,
1539                    mUid,
1540                    mPid,
1541                    mAttributes);
1542        } else {
1543            t = new AudioTrack(
1544                    mStreamType,
1545                    sampleRate,
1546                    format,
1547                    channelMask,
1548                    frameCount,
1549                    flags,
1550                    NULL, // callback
1551                    NULL, // user data
1552                    0, // notification frames
1553                    mSessionId,
1554                    AudioTrack::TRANSFER_DEFAULT,
1555                    NULL, // offload info
1556                    mUid,
1557                    mPid,
1558                    mAttributes);
1559        }
1560
1561        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1562            ALOGE("Unable to create audio track");
1563            delete newcbd;
1564            return NO_INIT;
1565        } else {
1566            // successful AudioTrack initialization implies a legacy stream type was generated
1567            // from the audio attributes
1568            mStreamType = t->streamType();
1569        }
1570    }
1571
1572    if (reuse) {
1573        CHECK(mRecycledTrack != NULL);
1574
1575        if (!bothOffloaded) {
1576            if (mRecycledTrack->frameCount() != t->frameCount()) {
1577                ALOGV("framecount differs: %u/%u frames",
1578                      mRecycledTrack->frameCount(), t->frameCount());
1579                reuse = false;
1580            }
1581        }
1582
1583        if (reuse) {
1584            ALOGV("chaining to next output and recycling track");
1585            close();
1586            mTrack = mRecycledTrack;
1587            mRecycledTrack.clear();
1588            if (mCallbackData != NULL) {
1589                mCallbackData->setOutput(this);
1590            }
1591            delete newcbd;
1592            return OK;
1593        }
1594    }
1595
1596    // we're not going to reuse the track, unblock and flush it
1597    // this was done earlier if both tracks are offloaded
1598    if (!bothOffloaded) {
1599        deleteRecycledTrack();
1600    }
1601
1602    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1603
1604    mCallbackData = newcbd;
1605    ALOGV("setVolume");
1606    t->setVolume(mLeftVolume, mRightVolume);
1607
1608    mSampleRateHz = sampleRate;
1609    mFlags = flags;
1610    mMsecsPerFrame = mPlaybackRatePermille / (float) sampleRate;
1611    uint32_t pos;
1612    if (t->getPosition(&pos) == OK) {
1613        mBytesWritten = uint64_t(pos) * t->frameSize();
1614    }
1615    mTrack = t;
1616
1617    status_t res = NO_ERROR;
1618    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1619        res = t->setSampleRate(mPlaybackRatePermille * mSampleRateHz / 1000);
1620        if (res == NO_ERROR) {
1621            t->setAuxEffectSendLevel(mSendLevel);
1622            res = t->attachAuxEffect(mAuxEffectId);
1623        }
1624    }
1625    ALOGV("open() DONE status %d", res);
1626    return res;
1627}
1628
1629status_t MediaPlayerService::AudioOutput::start()
1630{
1631    ALOGV("start");
1632    if (mCallbackData != NULL) {
1633        mCallbackData->endTrackSwitch();
1634    }
1635    if (mTrack != 0) {
1636        mTrack->setVolume(mLeftVolume, mRightVolume);
1637        mTrack->setAuxEffectSendLevel(mSendLevel);
1638        return mTrack->start();
1639    }
1640    return NO_INIT;
1641}
1642
1643void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1644    mNextOutput = nextOutput;
1645}
1646
1647
1648void MediaPlayerService::AudioOutput::switchToNextOutput() {
1649    ALOGV("switchToNextOutput");
1650    if (mNextOutput != NULL) {
1651        if (mCallbackData != NULL) {
1652            mCallbackData->beginTrackSwitch();
1653        }
1654        delete mNextOutput->mCallbackData;
1655        mNextOutput->mCallbackData = mCallbackData;
1656        mCallbackData = NULL;
1657        mNextOutput->mRecycledTrack = mTrack;
1658        mTrack.clear();
1659        mNextOutput->mSampleRateHz = mSampleRateHz;
1660        mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1661        mNextOutput->mBytesWritten = mBytesWritten;
1662        mNextOutput->mFlags = mFlags;
1663    }
1664}
1665
1666ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1667{
1668    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1669
1670    //ALOGV("write(%p, %u)", buffer, size);
1671    if (mTrack != 0) {
1672        ssize_t ret = mTrack->write(buffer, size);
1673        if (ret >= 0) {
1674            mBytesWritten += ret;
1675        }
1676        return ret;
1677    }
1678    return NO_INIT;
1679}
1680
1681void MediaPlayerService::AudioOutput::stop()
1682{
1683    ALOGV("stop");
1684    if (mTrack != 0) mTrack->stop();
1685}
1686
1687void MediaPlayerService::AudioOutput::flush()
1688{
1689    ALOGV("flush");
1690    if (mTrack != 0) mTrack->flush();
1691}
1692
1693void MediaPlayerService::AudioOutput::pause()
1694{
1695    ALOGV("pause");
1696    if (mTrack != 0) mTrack->pause();
1697}
1698
1699void MediaPlayerService::AudioOutput::close()
1700{
1701    ALOGV("close");
1702    mTrack.clear();
1703}
1704
1705void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1706{
1707    ALOGV("setVolume(%f, %f)", left, right);
1708    mLeftVolume = left;
1709    mRightVolume = right;
1710    if (mTrack != 0) {
1711        mTrack->setVolume(left, right);
1712    }
1713}
1714
1715status_t MediaPlayerService::AudioOutput::setPlaybackRatePermille(int32_t ratePermille)
1716{
1717    ALOGV("setPlaybackRatePermille(%d)", ratePermille);
1718    status_t res = NO_ERROR;
1719    if (mTrack != 0) {
1720        res = mTrack->setSampleRate(ratePermille * mSampleRateHz / 1000);
1721    } else {
1722        res = NO_INIT;
1723    }
1724    mPlaybackRatePermille = ratePermille;
1725    if (mSampleRateHz != 0) {
1726        mMsecsPerFrame = mPlaybackRatePermille / (float) mSampleRateHz;
1727    }
1728    return res;
1729}
1730
1731status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1732{
1733    ALOGV("setAuxEffectSendLevel(%f)", level);
1734    mSendLevel = level;
1735    if (mTrack != 0) {
1736        return mTrack->setAuxEffectSendLevel(level);
1737    }
1738    return NO_ERROR;
1739}
1740
1741status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1742{
1743    ALOGV("attachAuxEffect(%d)", effectId);
1744    mAuxEffectId = effectId;
1745    if (mTrack != 0) {
1746        return mTrack->attachAuxEffect(effectId);
1747    }
1748    return NO_ERROR;
1749}
1750
1751// static
1752void MediaPlayerService::AudioOutput::CallbackWrapper(
1753        int event, void *cookie, void *info) {
1754    //ALOGV("callbackwrapper");
1755    CallbackData *data = (CallbackData*)cookie;
1756    data->lock();
1757    AudioOutput *me = data->getOutput();
1758    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1759    if (me == NULL) {
1760        // no output set, likely because the track was scheduled to be reused
1761        // by another player, but the format turned out to be incompatible.
1762        data->unlock();
1763        if (buffer != NULL) {
1764            buffer->size = 0;
1765        }
1766        return;
1767    }
1768
1769    switch(event) {
1770    case AudioTrack::EVENT_MORE_DATA: {
1771        size_t actualSize = (*me->mCallback)(
1772                me, buffer->raw, buffer->size, me->mCallbackCookie,
1773                CB_EVENT_FILL_BUFFER);
1774
1775        if ((me->mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0 &&
1776            actualSize == 0 && buffer->size > 0 && me->mNextOutput == NULL) {
1777            // We've reached EOS but the audio track is not stopped yet,
1778            // keep playing silence.
1779
1780            memset(buffer->raw, 0, buffer->size);
1781            actualSize = buffer->size;
1782        }
1783
1784        buffer->size = actualSize;
1785        } break;
1786
1787
1788    case AudioTrack::EVENT_STREAM_END:
1789        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
1790        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
1791                me->mCallbackCookie, CB_EVENT_STREAM_END);
1792        break;
1793
1794    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
1795        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
1796        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
1797                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
1798        break;
1799
1800    default:
1801        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
1802    }
1803
1804    data->unlock();
1805}
1806
1807int MediaPlayerService::AudioOutput::getSessionId() const
1808{
1809    return mSessionId;
1810}
1811
1812uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
1813{
1814    if (mTrack == 0) return 0;
1815    return mTrack->getSampleRate();
1816}
1817
1818////////////////////////////////////////////////////////////////////////////////
1819
1820struct CallbackThread : public Thread {
1821    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1822                   MediaPlayerBase::AudioSink::AudioCallback cb,
1823                   void *cookie);
1824
1825protected:
1826    virtual ~CallbackThread();
1827
1828    virtual bool threadLoop();
1829
1830private:
1831    wp<MediaPlayerBase::AudioSink> mSink;
1832    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1833    void *mCookie;
1834    void *mBuffer;
1835    size_t mBufferSize;
1836
1837    CallbackThread(const CallbackThread &);
1838    CallbackThread &operator=(const CallbackThread &);
1839};
1840
1841CallbackThread::CallbackThread(
1842        const wp<MediaPlayerBase::AudioSink> &sink,
1843        MediaPlayerBase::AudioSink::AudioCallback cb,
1844        void *cookie)
1845    : mSink(sink),
1846      mCallback(cb),
1847      mCookie(cookie),
1848      mBuffer(NULL),
1849      mBufferSize(0) {
1850}
1851
1852CallbackThread::~CallbackThread() {
1853    if (mBuffer) {
1854        free(mBuffer);
1855        mBuffer = NULL;
1856    }
1857}
1858
1859bool CallbackThread::threadLoop() {
1860    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1861    if (sink == NULL) {
1862        return false;
1863    }
1864
1865    if (mBuffer == NULL) {
1866        mBufferSize = sink->bufferSize();
1867        mBuffer = malloc(mBufferSize);
1868    }
1869
1870    size_t actualSize =
1871        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
1872                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
1873
1874    if (actualSize > 0) {
1875        sink->write(mBuffer, actualSize);
1876        // Could return false on sink->write() error or short count.
1877        // Not necessarily appropriate but would work for AudioCache behavior.
1878    }
1879
1880    return true;
1881}
1882
1883////////////////////////////////////////////////////////////////////////////////
1884
1885void MediaPlayerService::addBatteryData(uint32_t params)
1886{
1887    Mutex::Autolock lock(mLock);
1888
1889    int32_t time = systemTime() / 1000000L;
1890
1891    // change audio output devices. This notification comes from AudioFlinger
1892    if ((params & kBatteryDataSpeakerOn)
1893            || (params & kBatteryDataOtherAudioDeviceOn)) {
1894
1895        int deviceOn[NUM_AUDIO_DEVICES];
1896        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1897            deviceOn[i] = 0;
1898        }
1899
1900        if ((params & kBatteryDataSpeakerOn)
1901                && (params & kBatteryDataOtherAudioDeviceOn)) {
1902            deviceOn[SPEAKER_AND_OTHER] = 1;
1903        } else if (params & kBatteryDataSpeakerOn) {
1904            deviceOn[SPEAKER] = 1;
1905        } else {
1906            deviceOn[OTHER_AUDIO_DEVICE] = 1;
1907        }
1908
1909        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1910            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
1911
1912                if (mBatteryAudio.refCount > 0) { // if playing audio
1913                    if (!deviceOn[i]) {
1914                        mBatteryAudio.lastTime[i] += time;
1915                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1916                        mBatteryAudio.lastTime[i] = 0;
1917                    } else {
1918                        mBatteryAudio.lastTime[i] = 0 - time;
1919                    }
1920                }
1921
1922                mBatteryAudio.deviceOn[i] = deviceOn[i];
1923            }
1924        }
1925        return;
1926    }
1927
1928    // an audio stream is started
1929    if (params & kBatteryDataAudioFlingerStart) {
1930        // record the start time only if currently no other audio
1931        // is being played
1932        if (mBatteryAudio.refCount == 0) {
1933            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1934                if (mBatteryAudio.deviceOn[i]) {
1935                    mBatteryAudio.lastTime[i] -= time;
1936                }
1937            }
1938        }
1939
1940        mBatteryAudio.refCount ++;
1941        return;
1942
1943    } else if (params & kBatteryDataAudioFlingerStop) {
1944        if (mBatteryAudio.refCount <= 0) {
1945            ALOGW("Battery track warning: refCount is <= 0");
1946            return;
1947        }
1948
1949        // record the stop time only if currently this is the only
1950        // audio being played
1951        if (mBatteryAudio.refCount == 1) {
1952            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1953                if (mBatteryAudio.deviceOn[i]) {
1954                    mBatteryAudio.lastTime[i] += time;
1955                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1956                    mBatteryAudio.lastTime[i] = 0;
1957                }
1958            }
1959        }
1960
1961        mBatteryAudio.refCount --;
1962        return;
1963    }
1964
1965    int uid = IPCThreadState::self()->getCallingUid();
1966    if (uid == AID_MEDIA) {
1967        return;
1968    }
1969    int index = mBatteryData.indexOfKey(uid);
1970
1971    if (index < 0) { // create a new entry for this UID
1972        BatteryUsageInfo info;
1973        info.audioTotalTime = 0;
1974        info.videoTotalTime = 0;
1975        info.audioLastTime = 0;
1976        info.videoLastTime = 0;
1977        info.refCount = 0;
1978
1979        if (mBatteryData.add(uid, info) == NO_MEMORY) {
1980            ALOGE("Battery track error: no memory for new app");
1981            return;
1982        }
1983    }
1984
1985    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
1986
1987    if (params & kBatteryDataCodecStarted) {
1988        if (params & kBatteryDataTrackAudio) {
1989            info.audioLastTime -= time;
1990            info.refCount ++;
1991        }
1992        if (params & kBatteryDataTrackVideo) {
1993            info.videoLastTime -= time;
1994            info.refCount ++;
1995        }
1996    } else {
1997        if (info.refCount == 0) {
1998            ALOGW("Battery track warning: refCount is already 0");
1999            return;
2000        } else if (info.refCount < 0) {
2001            ALOGE("Battery track error: refCount < 0");
2002            mBatteryData.removeItem(uid);
2003            return;
2004        }
2005
2006        if (params & kBatteryDataTrackAudio) {
2007            info.audioLastTime += time;
2008            info.refCount --;
2009        }
2010        if (params & kBatteryDataTrackVideo) {
2011            info.videoLastTime += time;
2012            info.refCount --;
2013        }
2014
2015        // no stream is being played by this UID
2016        if (info.refCount == 0) {
2017            info.audioTotalTime += info.audioLastTime;
2018            info.audioLastTime = 0;
2019            info.videoTotalTime += info.videoLastTime;
2020            info.videoLastTime = 0;
2021        }
2022    }
2023}
2024
2025status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2026    Mutex::Autolock lock(mLock);
2027
2028    // audio output devices usage
2029    int32_t time = systemTime() / 1000000L; //in ms
2030    int32_t totalTime;
2031
2032    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2033        totalTime = mBatteryAudio.totalTime[i];
2034
2035        if (mBatteryAudio.deviceOn[i]
2036            && (mBatteryAudio.lastTime[i] != 0)) {
2037                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2038                totalTime += tmpTime;
2039        }
2040
2041        reply->writeInt32(totalTime);
2042        // reset the total time
2043        mBatteryAudio.totalTime[i] = 0;
2044   }
2045
2046    // codec usage
2047    BatteryUsageInfo info;
2048    int size = mBatteryData.size();
2049
2050    reply->writeInt32(size);
2051    int i = 0;
2052
2053    while (i < size) {
2054        info = mBatteryData.valueAt(i);
2055
2056        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2057        reply->writeInt32(info.audioTotalTime);
2058        reply->writeInt32(info.videoTotalTime);
2059
2060        info.audioTotalTime = 0;
2061        info.videoTotalTime = 0;
2062
2063        // remove the UID entry where no stream is being played
2064        if (info.refCount <= 0) {
2065            mBatteryData.removeItemsAt(i);
2066            size --;
2067            i --;
2068        }
2069        i++;
2070    }
2071    return NO_ERROR;
2072}
2073} // namespace android
2074