MediaPlayerService.cpp revision f09611f2f33752afc28141e1bbaa897651c05d6f 
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        ::close(fd);
752        return UNKNOWN_ERROR;
753    }
754    if (offset + length > sb.st_size) {
755        length = sb.st_size - offset;
756        ALOGV("calculated length = %lld", length);
757    }
758
759    player_type playerType = MediaPlayerFactory::getPlayerType(this,
760                                                               fd,
761                                                               offset,
762                                                               length);
763    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
764    if (p == NULL) {
765        return NO_INIT;
766    }
767
768    // now set data source
769    setDataSource_post(p, p->setDataSource(fd, offset, length));
770    return mStatus;
771}
772
773status_t MediaPlayerService::Client::setDataSource(
774        const sp<IStreamSource> &source) {
775    // create the right type of player
776    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
777    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
778    if (p == NULL) {
779        return NO_INIT;
780    }
781
782    // now set data source
783    setDataSource_post(p, p->setDataSource(source));
784    return mStatus;
785}
786
787void MediaPlayerService::Client::disconnectNativeWindow() {
788    if (mConnectedWindow != NULL) {
789        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
790                NATIVE_WINDOW_API_MEDIA);
791
792        if (err != OK) {
793            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
794                    strerror(-err), err);
795        }
796    }
797    mConnectedWindow.clear();
798}
799
800status_t MediaPlayerService::Client::setVideoSurfaceTexture(
801        const sp<IGraphicBufferProducer>& bufferProducer)
802{
803    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
804    sp<MediaPlayerBase> p = getPlayer();
805    if (p == 0) return UNKNOWN_ERROR;
806
807    sp<IBinder> binder(IInterface::asBinder(bufferProducer));
808    if (mConnectedWindowBinder == binder) {
809        return OK;
810    }
811
812    sp<ANativeWindow> anw;
813    if (bufferProducer != NULL) {
814        anw = new Surface(bufferProducer, true /* controlledByApp */);
815        status_t err = native_window_api_connect(anw.get(),
816                NATIVE_WINDOW_API_MEDIA);
817
818        if (err != OK) {
819            ALOGE("setVideoSurfaceTexture failed: %d", err);
820            // Note that we must do the reset before disconnecting from the ANW.
821            // Otherwise queue/dequeue calls could be made on the disconnected
822            // ANW, which may result in errors.
823            reset();
824
825            disconnectNativeWindow();
826
827            return err;
828        }
829    }
830
831    // Note that we must set the player's new GraphicBufferProducer before
832    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
833    // on the disconnected ANW, which may result in errors.
834    status_t err = p->setVideoSurfaceTexture(bufferProducer);
835
836    disconnectNativeWindow();
837
838    mConnectedWindow = anw;
839
840    if (err == OK) {
841        mConnectedWindowBinder = binder;
842    } else {
843        disconnectNativeWindow();
844    }
845
846    return err;
847}
848
849status_t MediaPlayerService::Client::invoke(const Parcel& request,
850                                            Parcel *reply)
851{
852    sp<MediaPlayerBase> p = getPlayer();
853    if (p == NULL) return UNKNOWN_ERROR;
854    return p->invoke(request, reply);
855}
856
857// This call doesn't need to access the native player.
858status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
859{
860    status_t status;
861    media::Metadata::Filter allow, drop;
862
863    if (unmarshallFilter(filter, &allow, &status) &&
864        unmarshallFilter(filter, &drop, &status)) {
865        Mutex::Autolock lock(mLock);
866
867        mMetadataAllow = allow;
868        mMetadataDrop = drop;
869    }
870    return status;
871}
872
873status_t MediaPlayerService::Client::getMetadata(
874        bool update_only, bool /*apply_filter*/, Parcel *reply)
875{
876    sp<MediaPlayerBase> player = getPlayer();
877    if (player == 0) return UNKNOWN_ERROR;
878
879    status_t status;
880    // Placeholder for the return code, updated by the caller.
881    reply->writeInt32(-1);
882
883    media::Metadata::Filter ids;
884
885    // We don't block notifications while we fetch the data. We clear
886    // mMetadataUpdated first so we don't lose notifications happening
887    // during the rest of this call.
888    {
889        Mutex::Autolock lock(mLock);
890        if (update_only) {
891            ids = mMetadataUpdated;
892        }
893        mMetadataUpdated.clear();
894    }
895
896    media::Metadata metadata(reply);
897
898    metadata.appendHeader();
899    status = player->getMetadata(ids, reply);
900
901    if (status != OK) {
902        metadata.resetParcel();
903        ALOGE("getMetadata failed %d", status);
904        return status;
905    }
906
907    // FIXME: Implement filtering on the result. Not critical since
908    // filtering takes place on the update notifications already. This
909    // would be when all the metadata are fetch and a filter is set.
910
911    // Everything is fine, update the metadata length.
912    metadata.updateLength();
913    return OK;
914}
915
916status_t MediaPlayerService::Client::prepareAsync()
917{
918    ALOGV("[%d] prepareAsync", mConnId);
919    sp<MediaPlayerBase> p = getPlayer();
920    if (p == 0) return UNKNOWN_ERROR;
921    status_t ret = p->prepareAsync();
922#if CALLBACK_ANTAGONIZER
923    ALOGD("start Antagonizer");
924    if (ret == NO_ERROR) mAntagonizer->start();
925#endif
926    return ret;
927}
928
929status_t MediaPlayerService::Client::start()
930{
931    ALOGV("[%d] start", mConnId);
932    sp<MediaPlayerBase> p = getPlayer();
933    if (p == 0) return UNKNOWN_ERROR;
934    p->setLooping(mLoop);
935    return p->start();
936}
937
938status_t MediaPlayerService::Client::stop()
939{
940    ALOGV("[%d] stop", mConnId);
941    sp<MediaPlayerBase> p = getPlayer();
942    if (p == 0) return UNKNOWN_ERROR;
943    return p->stop();
944}
945
946status_t MediaPlayerService::Client::pause()
947{
948    ALOGV("[%d] pause", mConnId);
949    sp<MediaPlayerBase> p = getPlayer();
950    if (p == 0) return UNKNOWN_ERROR;
951    return p->pause();
952}
953
954status_t MediaPlayerService::Client::isPlaying(bool* state)
955{
956    *state = false;
957    sp<MediaPlayerBase> p = getPlayer();
958    if (p == 0) return UNKNOWN_ERROR;
959    *state = p->isPlaying();
960    ALOGV("[%d] isPlaying: %d", mConnId, *state);
961    return NO_ERROR;
962}
963
964status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
965{
966    ALOGV("getCurrentPosition");
967    sp<MediaPlayerBase> p = getPlayer();
968    if (p == 0) return UNKNOWN_ERROR;
969    status_t ret = p->getCurrentPosition(msec);
970    if (ret == NO_ERROR) {
971        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
972    } else {
973        ALOGE("getCurrentPosition returned %d", ret);
974    }
975    return ret;
976}
977
978status_t MediaPlayerService::Client::getDuration(int *msec)
979{
980    ALOGV("getDuration");
981    sp<MediaPlayerBase> p = getPlayer();
982    if (p == 0) return UNKNOWN_ERROR;
983    status_t ret = p->getDuration(msec);
984    if (ret == NO_ERROR) {
985        ALOGV("[%d] getDuration = %d", mConnId, *msec);
986    } else {
987        ALOGE("getDuration returned %d", ret);
988    }
989    return ret;
990}
991
992status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
993    ALOGV("setNextPlayer");
994    Mutex::Autolock l(mLock);
995    sp<Client> c = static_cast<Client*>(player.get());
996    mNextClient = c;
997
998    if (c != NULL) {
999        if (mAudioOutput != NULL) {
1000            mAudioOutput->setNextOutput(c->mAudioOutput);
1001        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1002            ALOGE("no current audio output");
1003        }
1004
1005        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1006            mPlayer->setNextPlayer(mNextClient->getPlayer());
1007        }
1008    }
1009
1010    return OK;
1011}
1012
1013status_t MediaPlayerService::Client::seekTo(int msec)
1014{
1015    ALOGV("[%d] seekTo(%d)", mConnId, msec);
1016    sp<MediaPlayerBase> p = getPlayer();
1017    if (p == 0) return UNKNOWN_ERROR;
1018    return p->seekTo(msec);
1019}
1020
1021status_t MediaPlayerService::Client::reset()
1022{
1023    ALOGV("[%d] reset", mConnId);
1024    mRetransmitEndpointValid = false;
1025    sp<MediaPlayerBase> p = getPlayer();
1026    if (p == 0) return UNKNOWN_ERROR;
1027    return p->reset();
1028}
1029
1030status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1031{
1032    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1033    // TODO: for hardware output, call player instead
1034    Mutex::Autolock l(mLock);
1035    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1036    return NO_ERROR;
1037}
1038
1039status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1040{
1041    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1042    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1043    unmarshallAudioAttributes(parcel, mAudioAttributes);
1044
1045    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1046            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1047            mAudioAttributes->tags);
1048
1049    if (mAudioOutput != 0) {
1050        mAudioOutput->setAudioAttributes(mAudioAttributes);
1051    }
1052    return NO_ERROR;
1053}
1054
1055status_t MediaPlayerService::Client::setLooping(int loop)
1056{
1057    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1058    mLoop = loop;
1059    sp<MediaPlayerBase> p = getPlayer();
1060    if (p != 0) return p->setLooping(loop);
1061    return NO_ERROR;
1062}
1063
1064status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1065{
1066    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1067
1068    // for hardware output, call player instead
1069    sp<MediaPlayerBase> p = getPlayer();
1070    {
1071      Mutex::Autolock l(mLock);
1072      if (p != 0 && p->hardwareOutput()) {
1073          MediaPlayerHWInterface* hwp =
1074                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1075          return hwp->setVolume(leftVolume, rightVolume);
1076      } else {
1077          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1078          return NO_ERROR;
1079      }
1080    }
1081
1082    return NO_ERROR;
1083}
1084
1085status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1086{
1087    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1088    Mutex::Autolock l(mLock);
1089    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1090    return NO_ERROR;
1091}
1092
1093status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1094{
1095    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1096    Mutex::Autolock l(mLock);
1097    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1098    return NO_ERROR;
1099}
1100
1101status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1102    ALOGV("[%d] setParameter(%d)", mConnId, key);
1103    switch (key) {
1104    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1105    {
1106        Mutex::Autolock l(mLock);
1107        return setAudioAttributes_l(request);
1108    }
1109    default:
1110        sp<MediaPlayerBase> p = getPlayer();
1111        if (p == 0) { return UNKNOWN_ERROR; }
1112        return p->setParameter(key, request);
1113    }
1114}
1115
1116status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1117    ALOGV("[%d] getParameter(%d)", mConnId, key);
1118    sp<MediaPlayerBase> p = getPlayer();
1119    if (p == 0) return UNKNOWN_ERROR;
1120    return p->getParameter(key, reply);
1121}
1122
1123status_t MediaPlayerService::Client::setRetransmitEndpoint(
1124        const struct sockaddr_in* endpoint) {
1125
1126    if (NULL != endpoint) {
1127        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1128        uint16_t p = ntohs(endpoint->sin_port);
1129        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1130                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1131    } else {
1132        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1133    }
1134
1135    sp<MediaPlayerBase> p = getPlayer();
1136
1137    // Right now, the only valid time to set a retransmit endpoint is before
1138    // player selection has been made (since the presence or absence of a
1139    // retransmit endpoint is going to determine which player is selected during
1140    // setDataSource).
1141    if (p != 0) return INVALID_OPERATION;
1142
1143    if (NULL != endpoint) {
1144        mRetransmitEndpoint = *endpoint;
1145        mRetransmitEndpointValid = true;
1146    } else {
1147        mRetransmitEndpointValid = false;
1148    }
1149
1150    return NO_ERROR;
1151}
1152
1153status_t MediaPlayerService::Client::getRetransmitEndpoint(
1154        struct sockaddr_in* endpoint)
1155{
1156    if (NULL == endpoint)
1157        return BAD_VALUE;
1158
1159    sp<MediaPlayerBase> p = getPlayer();
1160
1161    if (p != NULL)
1162        return p->getRetransmitEndpoint(endpoint);
1163
1164    if (!mRetransmitEndpointValid)
1165        return NO_INIT;
1166
1167    *endpoint = mRetransmitEndpoint;
1168
1169    return NO_ERROR;
1170}
1171
1172void MediaPlayerService::Client::notify(
1173        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1174{
1175    Client* client = static_cast<Client*>(cookie);
1176    if (client == NULL) {
1177        return;
1178    }
1179
1180    sp<IMediaPlayerClient> c;
1181    {
1182        Mutex::Autolock l(client->mLock);
1183        c = client->mClient;
1184        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1185            if (client->mAudioOutput != NULL)
1186                client->mAudioOutput->switchToNextOutput();
1187            client->mNextClient->start();
1188            client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1189        }
1190    }
1191
1192    if (MEDIA_INFO == msg &&
1193        MEDIA_INFO_METADATA_UPDATE == ext1) {
1194        const media::Metadata::Type metadata_type = ext2;
1195
1196        if(client->shouldDropMetadata(metadata_type)) {
1197            return;
1198        }
1199
1200        // Update the list of metadata that have changed. getMetadata
1201        // also access mMetadataUpdated and clears it.
1202        client->addNewMetadataUpdate(metadata_type);
1203    }
1204
1205    if (c != NULL) {
1206        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1207        c->notify(msg, ext1, ext2, obj);
1208    }
1209}
1210
1211
1212bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1213{
1214    Mutex::Autolock lock(mLock);
1215
1216    if (findMetadata(mMetadataDrop, code)) {
1217        return true;
1218    }
1219
1220    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1221        return false;
1222    } else {
1223        return true;
1224    }
1225}
1226
1227
1228void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1229    Mutex::Autolock lock(mLock);
1230    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1231        mMetadataUpdated.add(metadata_type);
1232    }
1233}
1234
1235#if CALLBACK_ANTAGONIZER
1236const int Antagonizer::interval = 10000; // 10 msecs
1237
1238Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1239    mExit(false), mActive(false), mClient(client), mCb(cb)
1240{
1241    createThread(callbackThread, this);
1242}
1243
1244void Antagonizer::kill()
1245{
1246    Mutex::Autolock _l(mLock);
1247    mActive = false;
1248    mExit = true;
1249    mCondition.wait(mLock);
1250}
1251
1252int Antagonizer::callbackThread(void* user)
1253{
1254    ALOGD("Antagonizer started");
1255    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1256    while (!p->mExit) {
1257        if (p->mActive) {
1258            ALOGV("send event");
1259            p->mCb(p->mClient, 0, 0, 0);
1260        }
1261        usleep(interval);
1262    }
1263    Mutex::Autolock _l(p->mLock);
1264    p->mCondition.signal();
1265    ALOGD("Antagonizer stopped");
1266    return 0;
1267}
1268#endif
1269
1270#undef LOG_TAG
1271#define LOG_TAG "AudioSink"
1272MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid, int pid,
1273        const audio_attributes_t* attr)
1274    : mCallback(NULL),
1275      mCallbackCookie(NULL),
1276      mCallbackData(NULL),
1277      mBytesWritten(0),
1278      mSessionId(sessionId),
1279      mUid(uid),
1280      mPid(pid),
1281      mFlags(AUDIO_OUTPUT_FLAG_NONE) {
1282    ALOGV("AudioOutput(%d)", sessionId);
1283    mStreamType = AUDIO_STREAM_MUSIC;
1284    mLeftVolume = 1.0;
1285    mRightVolume = 1.0;
1286    mPlaybackRatePermille = 1000;
1287    mSampleRateHz = 0;
1288    mMsecsPerFrame = 0;
1289    mAuxEffectId = 0;
1290    mSendLevel = 0.0;
1291    setMinBufferCount();
1292    mAttributes = attr;
1293}
1294
1295MediaPlayerService::AudioOutput::~AudioOutput()
1296{
1297    close();
1298    delete mCallbackData;
1299}
1300
1301void MediaPlayerService::AudioOutput::setMinBufferCount()
1302{
1303    char value[PROPERTY_VALUE_MAX];
1304    if (property_get("ro.kernel.qemu", value, 0)) {
1305        mIsOnEmulator = true;
1306        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1307    }
1308}
1309
1310bool MediaPlayerService::AudioOutput::isOnEmulator()
1311{
1312    setMinBufferCount();
1313    return mIsOnEmulator;
1314}
1315
1316int MediaPlayerService::AudioOutput::getMinBufferCount()
1317{
1318    setMinBufferCount();
1319    return mMinBufferCount;
1320}
1321
1322ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1323{
1324    if (mTrack == 0) return NO_INIT;
1325    return mTrack->frameCount() * frameSize();
1326}
1327
1328ssize_t MediaPlayerService::AudioOutput::frameCount() const
1329{
1330    if (mTrack == 0) return NO_INIT;
1331    return mTrack->frameCount();
1332}
1333
1334ssize_t MediaPlayerService::AudioOutput::channelCount() const
1335{
1336    if (mTrack == 0) return NO_INIT;
1337    return mTrack->channelCount();
1338}
1339
1340ssize_t MediaPlayerService::AudioOutput::frameSize() const
1341{
1342    if (mTrack == 0) return NO_INIT;
1343    return mTrack->frameSize();
1344}
1345
1346uint32_t MediaPlayerService::AudioOutput::latency () const
1347{
1348    if (mTrack == 0) return 0;
1349    return mTrack->latency();
1350}
1351
1352float MediaPlayerService::AudioOutput::msecsPerFrame() const
1353{
1354    return mMsecsPerFrame;
1355}
1356
1357status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1358{
1359    if (mTrack == 0) return NO_INIT;
1360    return mTrack->getPosition(position);
1361}
1362
1363status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1364{
1365    if (mTrack == 0) return NO_INIT;
1366    return mTrack->getTimestamp(ts);
1367}
1368
1369status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1370{
1371    if (mTrack == 0) return NO_INIT;
1372    *frameswritten = mBytesWritten / frameSize();
1373    return OK;
1374}
1375
1376status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1377{
1378    if (mTrack == 0) return NO_INIT;
1379    return mTrack->setParameters(keyValuePairs);
1380}
1381
1382String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1383{
1384    if (mTrack == 0) return String8::empty();
1385    return mTrack->getParameters(keys);
1386}
1387
1388void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1389    mAttributes = attributes;
1390}
1391
1392void MediaPlayerService::AudioOutput::deleteRecycledTrack()
1393{
1394    ALOGV("deleteRecycledTrack");
1395
1396    if (mRecycledTrack != 0) {
1397
1398        if (mCallbackData != NULL) {
1399            mCallbackData->setOutput(NULL);
1400            mCallbackData->endTrackSwitch();
1401        }
1402
1403        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1404            mRecycledTrack->flush();
1405        }
1406        // An offloaded track isn't flushed because the STREAM_END is reported
1407        // slightly prematurely to allow time for the gapless track switch
1408        // but this means that if we decide not to recycle the track there
1409        // could be a small amount of residual data still playing. We leave
1410        // AudioFlinger to drain the track.
1411
1412        mRecycledTrack.clear();
1413        delete mCallbackData;
1414        mCallbackData = NULL;
1415        close();
1416    }
1417}
1418
1419status_t MediaPlayerService::AudioOutput::open(
1420        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1421        audio_format_t format, int bufferCount,
1422        AudioCallback cb, void *cookie,
1423        audio_output_flags_t flags,
1424        const audio_offload_info_t *offloadInfo)
1425{
1426    mCallback = cb;
1427    mCallbackCookie = cookie;
1428
1429    // Check argument "bufferCount" against the mininum buffer count
1430    if (bufferCount < mMinBufferCount) {
1431        ALOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1432        bufferCount = mMinBufferCount;
1433
1434    }
1435    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1436                format, bufferCount, mSessionId, flags);
1437    uint32_t afSampleRate;
1438    size_t afFrameCount;
1439    size_t frameCount;
1440
1441    // offloading is only supported in callback mode for now.
1442    // offloadInfo must be present if offload flag is set
1443    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1444            ((cb == NULL) || (offloadInfo == NULL))) {
1445        return BAD_VALUE;
1446    }
1447
1448    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1449        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1450    } else {
1451        uint32_t afSampleRate;
1452        size_t afFrameCount;
1453
1454        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1455            return NO_INIT;
1456        }
1457        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1458            return NO_INIT;
1459        }
1460
1461        frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1462    }
1463
1464    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1465        channelMask = audio_channel_out_mask_from_count(channelCount);
1466        if (0 == channelMask) {
1467            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1468            return NO_INIT;
1469        }
1470    }
1471
1472    // Check whether we can recycle the track
1473    bool reuse = false;
1474    bool bothOffloaded = false;
1475
1476    if (mRecycledTrack != 0) {
1477        // check whether we are switching between two offloaded tracks
1478        bothOffloaded = (flags & mRecycledTrack->getFlags()
1479                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1480
1481        // check if the existing track can be reused as-is, or if a new track needs to be created.
1482        reuse = true;
1483
1484        if ((mCallbackData == NULL && mCallback != NULL) ||
1485                (mCallbackData != NULL && mCallback == NULL)) {
1486            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1487            ALOGV("can't chain callback and write");
1488            reuse = false;
1489        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1490                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1491            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1492                  mRecycledTrack->getSampleRate(), sampleRate,
1493                  mRecycledTrack->channelCount(), channelCount);
1494            reuse = false;
1495        } else if (flags != mFlags) {
1496            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1497            reuse = false;
1498        } else if (mRecycledTrack->format() != format) {
1499            reuse = false;
1500        }
1501    } else {
1502        ALOGV("no track available to recycle");
1503    }
1504
1505    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1506
1507    // If we can't recycle and both tracks are offloaded
1508    // we must close the previous output before opening a new one
1509    if (bothOffloaded && !reuse) {
1510        ALOGV("both offloaded and not recycling");
1511        deleteRecycledTrack();
1512    }
1513
1514    sp<AudioTrack> t;
1515    CallbackData *newcbd = NULL;
1516
1517    // We don't attempt to create a new track if we are recycling an
1518    // offloaded track. But, if we are recycling a non-offloaded or we
1519    // are switching where one is offloaded and one isn't then we create
1520    // the new track in advance so that we can read additional stream info
1521
1522    if (!(reuse && bothOffloaded)) {
1523        ALOGV("creating new AudioTrack");
1524
1525        if (mCallback != NULL) {
1526            newcbd = new CallbackData(this);
1527            t = new AudioTrack(
1528                    mStreamType,
1529                    sampleRate,
1530                    format,
1531                    channelMask,
1532                    frameCount,
1533                    flags,
1534                    CallbackWrapper,
1535                    newcbd,
1536                    0,  // notification frames
1537                    mSessionId,
1538                    AudioTrack::TRANSFER_CALLBACK,
1539                    offloadInfo,
1540                    mUid,
1541                    mPid,
1542                    mAttributes);
1543        } else {
1544            t = new AudioTrack(
1545                    mStreamType,
1546                    sampleRate,
1547                    format,
1548                    channelMask,
1549                    frameCount,
1550                    flags,
1551                    NULL, // callback
1552                    NULL, // user data
1553                    0, // notification frames
1554                    mSessionId,
1555                    AudioTrack::TRANSFER_DEFAULT,
1556                    NULL, // offload info
1557                    mUid,
1558                    mPid,
1559                    mAttributes);
1560        }
1561
1562        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1563            ALOGE("Unable to create audio track");
1564            delete newcbd;
1565            return NO_INIT;
1566        } else {
1567            // successful AudioTrack initialization implies a legacy stream type was generated
1568            // from the audio attributes
1569            mStreamType = t->streamType();
1570        }
1571    }
1572
1573    if (reuse) {
1574        CHECK(mRecycledTrack != NULL);
1575
1576        if (!bothOffloaded) {
1577            if (mRecycledTrack->frameCount() != t->frameCount()) {
1578                ALOGV("framecount differs: %u/%u frames",
1579                      mRecycledTrack->frameCount(), t->frameCount());
1580                reuse = false;
1581            }
1582        }
1583
1584        if (reuse) {
1585            ALOGV("chaining to next output and recycling track");
1586            close();
1587            mTrack = mRecycledTrack;
1588            mRecycledTrack.clear();
1589            if (mCallbackData != NULL) {
1590                mCallbackData->setOutput(this);
1591            }
1592            delete newcbd;
1593            return OK;
1594        }
1595    }
1596
1597    // we're not going to reuse the track, unblock and flush it
1598    // this was done earlier if both tracks are offloaded
1599    if (!bothOffloaded) {
1600        deleteRecycledTrack();
1601    }
1602
1603    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1604
1605    mCallbackData = newcbd;
1606    ALOGV("setVolume");
1607    t->setVolume(mLeftVolume, mRightVolume);
1608
1609    mSampleRateHz = sampleRate;
1610    mFlags = flags;
1611    mMsecsPerFrame = mPlaybackRatePermille / (float) sampleRate;
1612    uint32_t pos;
1613    if (t->getPosition(&pos) == OK) {
1614        mBytesWritten = uint64_t(pos) * t->frameSize();
1615    }
1616    mTrack = t;
1617
1618    status_t res = NO_ERROR;
1619    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1620        res = t->setSampleRate(mPlaybackRatePermille * mSampleRateHz / 1000);
1621        if (res == NO_ERROR) {
1622            t->setAuxEffectSendLevel(mSendLevel);
1623            res = t->attachAuxEffect(mAuxEffectId);
1624        }
1625    }
1626    ALOGV("open() DONE status %d", res);
1627    return res;
1628}
1629
1630status_t MediaPlayerService::AudioOutput::start()
1631{
1632    ALOGV("start");
1633    if (mCallbackData != NULL) {
1634        mCallbackData->endTrackSwitch();
1635    }
1636    if (mTrack != 0) {
1637        mTrack->setVolume(mLeftVolume, mRightVolume);
1638        mTrack->setAuxEffectSendLevel(mSendLevel);
1639        return mTrack->start();
1640    }
1641    return NO_INIT;
1642}
1643
1644void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1645    mNextOutput = nextOutput;
1646}
1647
1648
1649void MediaPlayerService::AudioOutput::switchToNextOutput() {
1650    ALOGV("switchToNextOutput");
1651    if (mNextOutput != NULL) {
1652        if (mCallbackData != NULL) {
1653            mCallbackData->beginTrackSwitch();
1654        }
1655        delete mNextOutput->mCallbackData;
1656        mNextOutput->mCallbackData = mCallbackData;
1657        mCallbackData = NULL;
1658        mNextOutput->mRecycledTrack = mTrack;
1659        mTrack.clear();
1660        mNextOutput->mSampleRateHz = mSampleRateHz;
1661        mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1662        mNextOutput->mBytesWritten = mBytesWritten;
1663        mNextOutput->mFlags = mFlags;
1664    }
1665}
1666
1667ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1668{
1669    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1670
1671    //ALOGV("write(%p, %u)", buffer, size);
1672    if (mTrack != 0) {
1673        ssize_t ret = mTrack->write(buffer, size);
1674        if (ret >= 0) {
1675            mBytesWritten += ret;
1676        }
1677        return ret;
1678    }
1679    return NO_INIT;
1680}
1681
1682void MediaPlayerService::AudioOutput::stop()
1683{
1684    ALOGV("stop");
1685    if (mTrack != 0) mTrack->stop();
1686}
1687
1688void MediaPlayerService::AudioOutput::flush()
1689{
1690    ALOGV("flush");
1691    if (mTrack != 0) mTrack->flush();
1692}
1693
1694void MediaPlayerService::AudioOutput::pause()
1695{
1696    ALOGV("pause");
1697    if (mTrack != 0) mTrack->pause();
1698}
1699
1700void MediaPlayerService::AudioOutput::close()
1701{
1702    ALOGV("close");
1703    mTrack.clear();
1704}
1705
1706void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1707{
1708    ALOGV("setVolume(%f, %f)", left, right);
1709    mLeftVolume = left;
1710    mRightVolume = right;
1711    if (mTrack != 0) {
1712        mTrack->setVolume(left, right);
1713    }
1714}
1715
1716status_t MediaPlayerService::AudioOutput::setPlaybackRatePermille(int32_t ratePermille)
1717{
1718    ALOGV("setPlaybackRatePermille(%d)", ratePermille);
1719    status_t res = NO_ERROR;
1720    if (mTrack != 0) {
1721        res = mTrack->setSampleRate(ratePermille * mSampleRateHz / 1000);
1722    } else {
1723        res = NO_INIT;
1724    }
1725    mPlaybackRatePermille = ratePermille;
1726    if (mSampleRateHz != 0) {
1727        mMsecsPerFrame = mPlaybackRatePermille / (float) mSampleRateHz;
1728    }
1729    return res;
1730}
1731
1732status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1733{
1734    ALOGV("setAuxEffectSendLevel(%f)", level);
1735    mSendLevel = level;
1736    if (mTrack != 0) {
1737        return mTrack->setAuxEffectSendLevel(level);
1738    }
1739    return NO_ERROR;
1740}
1741
1742status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1743{
1744    ALOGV("attachAuxEffect(%d)", effectId);
1745    mAuxEffectId = effectId;
1746    if (mTrack != 0) {
1747        return mTrack->attachAuxEffect(effectId);
1748    }
1749    return NO_ERROR;
1750}
1751
1752// static
1753void MediaPlayerService::AudioOutput::CallbackWrapper(
1754        int event, void *cookie, void *info) {
1755    //ALOGV("callbackwrapper");
1756    CallbackData *data = (CallbackData*)cookie;
1757    data->lock();
1758    AudioOutput *me = data->getOutput();
1759    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1760    if (me == NULL) {
1761        // no output set, likely because the track was scheduled to be reused
1762        // by another player, but the format turned out to be incompatible.
1763        data->unlock();
1764        if (buffer != NULL) {
1765            buffer->size = 0;
1766        }
1767        return;
1768    }
1769
1770    switch(event) {
1771    case AudioTrack::EVENT_MORE_DATA: {
1772        size_t actualSize = (*me->mCallback)(
1773                me, buffer->raw, buffer->size, me->mCallbackCookie,
1774                CB_EVENT_FILL_BUFFER);
1775
1776        if ((me->mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0 &&
1777            actualSize == 0 && buffer->size > 0 && me->mNextOutput == NULL) {
1778            // We've reached EOS but the audio track is not stopped yet,
1779            // keep playing silence.
1780
1781            memset(buffer->raw, 0, buffer->size);
1782            actualSize = buffer->size;
1783        }
1784
1785        buffer->size = actualSize;
1786        } break;
1787
1788
1789    case AudioTrack::EVENT_STREAM_END:
1790        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
1791        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
1792                me->mCallbackCookie, CB_EVENT_STREAM_END);
1793        break;
1794
1795    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
1796        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
1797        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
1798                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
1799        break;
1800
1801    default:
1802        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
1803    }
1804
1805    data->unlock();
1806}
1807
1808int MediaPlayerService::AudioOutput::getSessionId() const
1809{
1810    return mSessionId;
1811}
1812
1813uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
1814{
1815    if (mTrack == 0) return 0;
1816    return mTrack->getSampleRate();
1817}
1818
1819////////////////////////////////////////////////////////////////////////////////
1820
1821struct CallbackThread : public Thread {
1822    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1823                   MediaPlayerBase::AudioSink::AudioCallback cb,
1824                   void *cookie);
1825
1826protected:
1827    virtual ~CallbackThread();
1828
1829    virtual bool threadLoop();
1830
1831private:
1832    wp<MediaPlayerBase::AudioSink> mSink;
1833    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1834    void *mCookie;
1835    void *mBuffer;
1836    size_t mBufferSize;
1837
1838    CallbackThread(const CallbackThread &);
1839    CallbackThread &operator=(const CallbackThread &);
1840};
1841
1842CallbackThread::CallbackThread(
1843        const wp<MediaPlayerBase::AudioSink> &sink,
1844        MediaPlayerBase::AudioSink::AudioCallback cb,
1845        void *cookie)
1846    : mSink(sink),
1847      mCallback(cb),
1848      mCookie(cookie),
1849      mBuffer(NULL),
1850      mBufferSize(0) {
1851}
1852
1853CallbackThread::~CallbackThread() {
1854    if (mBuffer) {
1855        free(mBuffer);
1856        mBuffer = NULL;
1857    }
1858}
1859
1860bool CallbackThread::threadLoop() {
1861    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1862    if (sink == NULL) {
1863        return false;
1864    }
1865
1866    if (mBuffer == NULL) {
1867        mBufferSize = sink->bufferSize();
1868        mBuffer = malloc(mBufferSize);
1869    }
1870
1871    size_t actualSize =
1872        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
1873                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
1874
1875    if (actualSize > 0) {
1876        sink->write(mBuffer, actualSize);
1877        // Could return false on sink->write() error or short count.
1878        // Not necessarily appropriate but would work for AudioCache behavior.
1879    }
1880
1881    return true;
1882}
1883
1884////////////////////////////////////////////////////////////////////////////////
1885
1886void MediaPlayerService::addBatteryData(uint32_t params)
1887{
1888    Mutex::Autolock lock(mLock);
1889
1890    int32_t time = systemTime() / 1000000L;
1891
1892    // change audio output devices. This notification comes from AudioFlinger
1893    if ((params & kBatteryDataSpeakerOn)
1894            || (params & kBatteryDataOtherAudioDeviceOn)) {
1895
1896        int deviceOn[NUM_AUDIO_DEVICES];
1897        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1898            deviceOn[i] = 0;
1899        }
1900
1901        if ((params & kBatteryDataSpeakerOn)
1902                && (params & kBatteryDataOtherAudioDeviceOn)) {
1903            deviceOn[SPEAKER_AND_OTHER] = 1;
1904        } else if (params & kBatteryDataSpeakerOn) {
1905            deviceOn[SPEAKER] = 1;
1906        } else {
1907            deviceOn[OTHER_AUDIO_DEVICE] = 1;
1908        }
1909
1910        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1911            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
1912
1913                if (mBatteryAudio.refCount > 0) { // if playing audio
1914                    if (!deviceOn[i]) {
1915                        mBatteryAudio.lastTime[i] += time;
1916                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1917                        mBatteryAudio.lastTime[i] = 0;
1918                    } else {
1919                        mBatteryAudio.lastTime[i] = 0 - time;
1920                    }
1921                }
1922
1923                mBatteryAudio.deviceOn[i] = deviceOn[i];
1924            }
1925        }
1926        return;
1927    }
1928
1929    // an audio stream is started
1930    if (params & kBatteryDataAudioFlingerStart) {
1931        // record the start time only if currently no other audio
1932        // is being played
1933        if (mBatteryAudio.refCount == 0) {
1934            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1935                if (mBatteryAudio.deviceOn[i]) {
1936                    mBatteryAudio.lastTime[i] -= time;
1937                }
1938            }
1939        }
1940
1941        mBatteryAudio.refCount ++;
1942        return;
1943
1944    } else if (params & kBatteryDataAudioFlingerStop) {
1945        if (mBatteryAudio.refCount <= 0) {
1946            ALOGW("Battery track warning: refCount is <= 0");
1947            return;
1948        }
1949
1950        // record the stop time only if currently this is the only
1951        // audio being played
1952        if (mBatteryAudio.refCount == 1) {
1953            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1954                if (mBatteryAudio.deviceOn[i]) {
1955                    mBatteryAudio.lastTime[i] += time;
1956                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1957                    mBatteryAudio.lastTime[i] = 0;
1958                }
1959            }
1960        }
1961
1962        mBatteryAudio.refCount --;
1963        return;
1964    }
1965
1966    int uid = IPCThreadState::self()->getCallingUid();
1967    if (uid == AID_MEDIA) {
1968        return;
1969    }
1970    int index = mBatteryData.indexOfKey(uid);
1971
1972    if (index < 0) { // create a new entry for this UID
1973        BatteryUsageInfo info;
1974        info.audioTotalTime = 0;
1975        info.videoTotalTime = 0;
1976        info.audioLastTime = 0;
1977        info.videoLastTime = 0;
1978        info.refCount = 0;
1979
1980        if (mBatteryData.add(uid, info) == NO_MEMORY) {
1981            ALOGE("Battery track error: no memory for new app");
1982            return;
1983        }
1984    }
1985
1986    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
1987
1988    if (params & kBatteryDataCodecStarted) {
1989        if (params & kBatteryDataTrackAudio) {
1990            info.audioLastTime -= time;
1991            info.refCount ++;
1992        }
1993        if (params & kBatteryDataTrackVideo) {
1994            info.videoLastTime -= time;
1995            info.refCount ++;
1996        }
1997    } else {
1998        if (info.refCount == 0) {
1999            ALOGW("Battery track warning: refCount is already 0");
2000            return;
2001        } else if (info.refCount < 0) {
2002            ALOGE("Battery track error: refCount < 0");
2003            mBatteryData.removeItem(uid);
2004            return;
2005        }
2006
2007        if (params & kBatteryDataTrackAudio) {
2008            info.audioLastTime += time;
2009            info.refCount --;
2010        }
2011        if (params & kBatteryDataTrackVideo) {
2012            info.videoLastTime += time;
2013            info.refCount --;
2014        }
2015
2016        // no stream is being played by this UID
2017        if (info.refCount == 0) {
2018            info.audioTotalTime += info.audioLastTime;
2019            info.audioLastTime = 0;
2020            info.videoTotalTime += info.videoLastTime;
2021            info.videoLastTime = 0;
2022        }
2023    }
2024}
2025
2026status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2027    Mutex::Autolock lock(mLock);
2028
2029    // audio output devices usage
2030    int32_t time = systemTime() / 1000000L; //in ms
2031    int32_t totalTime;
2032
2033    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2034        totalTime = mBatteryAudio.totalTime[i];
2035
2036        if (mBatteryAudio.deviceOn[i]
2037            && (mBatteryAudio.lastTime[i] != 0)) {
2038                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2039                totalTime += tmpTime;
2040        }
2041
2042        reply->writeInt32(totalTime);
2043        // reset the total time
2044        mBatteryAudio.totalTime[i] = 0;
2045   }
2046
2047    // codec usage
2048    BatteryUsageInfo info;
2049    int size = mBatteryData.size();
2050
2051    reply->writeInt32(size);
2052    int i = 0;
2053
2054    while (i < size) {
2055        info = mBatteryData.valueAt(i);
2056
2057        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2058        reply->writeInt32(info.audioTotalTime);
2059        reply->writeInt32(info.videoTotalTime);
2060
2061        info.audioTotalTime = 0;
2062        info.videoTotalTime = 0;
2063
2064        // remove the UID entry where no stream is being played
2065        if (info.refCount <= 0) {
2066            mBatteryData.removeItemsAt(i);
2067            size --;
2068            i --;
2069        }
2070        i++;
2071    }
2072    return NO_ERROR;
2073}
2074} // namespace android
2075