MediaPlayerService.cpp revision ed849b8266824d4c5df15466e5c02e1471192461 
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        // use checkService() to avoid blocking if service is not up yet
294        sp<IBatteryStats> batteryStats =
295                interface_cast<IBatteryStats>(sm->checkService(name));
296        if (batteryStats != NULL) {
297            batteryStats->noteResetVideo();
298            batteryStats->noteResetAudio();
299        }
300    }
301
302    MediaPlayerFactory::registerBuiltinFactories();
303}
304
305MediaPlayerService::~MediaPlayerService()
306{
307    ALOGV("MediaPlayerService destroyed");
308}
309
310sp<IMediaRecorder> MediaPlayerService::createMediaRecorder()
311{
312    pid_t pid = IPCThreadState::self()->getCallingPid();
313    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
314    wp<MediaRecorderClient> w = recorder;
315    Mutex::Autolock lock(mLock);
316    mMediaRecorderClients.add(w);
317    ALOGV("Create new media recorder client from pid %d", pid);
318    return recorder;
319}
320
321void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
322{
323    Mutex::Autolock lock(mLock);
324    mMediaRecorderClients.remove(client);
325    ALOGV("Delete media recorder client");
326}
327
328sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
329{
330    pid_t pid = IPCThreadState::self()->getCallingPid();
331    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
332    ALOGV("Create new media retriever from pid %d", pid);
333    return retriever;
334}
335
336sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
337        int audioSessionId)
338{
339    pid_t pid = IPCThreadState::self()->getCallingPid();
340    int32_t connId = android_atomic_inc(&mNextConnId);
341
342    sp<Client> c = new Client(
343            this, pid, connId, client, audioSessionId,
344            IPCThreadState::self()->getCallingUid());
345
346    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
347         IPCThreadState::self()->getCallingUid());
348
349    wp<Client> w = c;
350    {
351        Mutex::Autolock lock(mLock);
352        mClients.add(w);
353    }
354    return c;
355}
356
357sp<IMediaCodecList> MediaPlayerService::getCodecList() const {
358    return MediaCodecList::getLocalInstance();
359}
360
361sp<IOMX> MediaPlayerService::getOMX() {
362    Mutex::Autolock autoLock(mLock);
363
364    if (mOMX.get() == NULL) {
365        mOMX = new OMX;
366    }
367
368    return mOMX;
369}
370
371sp<ICrypto> MediaPlayerService::makeCrypto() {
372    return new Crypto;
373}
374
375sp<IDrm> MediaPlayerService::makeDrm() {
376    return new Drm;
377}
378
379sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
380    return new HDCP(createEncryptionModule);
381}
382
383sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
384        const sp<IRemoteDisplayClient>& client, const String8& iface) {
385    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
386        return NULL;
387    }
388
389    return new RemoteDisplay(client, iface.string());
390}
391
392status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
393{
394    const size_t SIZE = 256;
395    char buffer[SIZE];
396    String8 result;
397
398    result.append(" AudioOutput\n");
399    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
400            mStreamType, mLeftVolume, mRightVolume);
401    result.append(buffer);
402    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
403            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
404    result.append(buffer);
405    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
406            mAuxEffectId, mSendLevel);
407    result.append(buffer);
408
409    ::write(fd, result.string(), result.size());
410    if (mTrack != 0) {
411        mTrack->dump(fd, args);
412    }
413    return NO_ERROR;
414}
415
416status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
417{
418    const size_t SIZE = 256;
419    char buffer[SIZE];
420    String8 result;
421    result.append(" Client\n");
422    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
423            mPid, mConnId, mStatus, mLoop?"true": "false");
424    result.append(buffer);
425    write(fd, result.string(), result.size());
426    if (mPlayer != NULL) {
427        mPlayer->dump(fd, args);
428    }
429    if (mAudioOutput != 0) {
430        mAudioOutput->dump(fd, args);
431    }
432    write(fd, "\n", 1);
433    return NO_ERROR;
434}
435
436/**
437 * The only arguments this understands right now are -c, -von and -voff,
438 * which are parsed by ALooperRoster::dump()
439 */
440status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
441{
442    const size_t SIZE = 256;
443    char buffer[SIZE];
444    String8 result;
445    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
446        snprintf(buffer, SIZE, "Permission Denial: "
447                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
448                IPCThreadState::self()->getCallingPid(),
449                IPCThreadState::self()->getCallingUid());
450        result.append(buffer);
451    } else {
452        Mutex::Autolock lock(mLock);
453        for (int i = 0, n = mClients.size(); i < n; ++i) {
454            sp<Client> c = mClients[i].promote();
455            if (c != 0) c->dump(fd, args);
456        }
457        if (mMediaRecorderClients.size() == 0) {
458                result.append(" No media recorder client\n\n");
459        } else {
460            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
461                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
462                if (c != 0) {
463                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
464                    result.append(buffer);
465                    write(fd, result.string(), result.size());
466                    result = "\n";
467                    c->dump(fd, args);
468                }
469            }
470        }
471
472        result.append(" Files opened and/or mapped:\n");
473        snprintf(buffer, SIZE, "/proc/%d/maps", getpid());
474        FILE *f = fopen(buffer, "r");
475        if (f) {
476            while (!feof(f)) {
477                fgets(buffer, SIZE, f);
478                if (strstr(buffer, " /storage/") ||
479                    strstr(buffer, " /system/sounds/") ||
480                    strstr(buffer, " /data/") ||
481                    strstr(buffer, " /system/media/")) {
482                    result.append("  ");
483                    result.append(buffer);
484                }
485            }
486            fclose(f);
487        } else {
488            result.append("couldn't open ");
489            result.append(buffer);
490            result.append("\n");
491        }
492
493        snprintf(buffer, SIZE, "/proc/%d/fd", getpid());
494        DIR *d = opendir(buffer);
495        if (d) {
496            struct dirent *ent;
497            while((ent = readdir(d)) != NULL) {
498                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
499                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", getpid(), ent->d_name);
500                    struct stat s;
501                    if (lstat(buffer, &s) == 0) {
502                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
503                            char linkto[256];
504                            int len = readlink(buffer, linkto, sizeof(linkto));
505                            if(len > 0) {
506                                if(len > 255) {
507                                    linkto[252] = '.';
508                                    linkto[253] = '.';
509                                    linkto[254] = '.';
510                                    linkto[255] = 0;
511                                } else {
512                                    linkto[len] = 0;
513                                }
514                                if (strstr(linkto, "/storage/") == linkto ||
515                                    strstr(linkto, "/system/sounds/") == linkto ||
516                                    strstr(linkto, "/data/") == linkto ||
517                                    strstr(linkto, "/system/media/") == linkto) {
518                                    result.append("  ");
519                                    result.append(buffer);
520                                    result.append(" -> ");
521                                    result.append(linkto);
522                                    result.append("\n");
523                                }
524                            }
525                        } else {
526                            result.append("  unexpected type for ");
527                            result.append(buffer);
528                            result.append("\n");
529                        }
530                    }
531                }
532            }
533            closedir(d);
534        } else {
535            result.append("couldn't open ");
536            result.append(buffer);
537            result.append("\n");
538        }
539
540        gLooperRoster.dump(fd, args);
541
542        bool dumpMem = false;
543        for (size_t i = 0; i < args.size(); i++) {
544            if (args[i] == String16("-m")) {
545                dumpMem = true;
546            }
547        }
548        if (dumpMem) {
549            dumpMemoryAddresses(fd);
550        }
551    }
552    write(fd, result.string(), result.size());
553    return NO_ERROR;
554}
555
556void MediaPlayerService::removeClient(wp<Client> client)
557{
558    Mutex::Autolock lock(mLock);
559    mClients.remove(client);
560}
561
562MediaPlayerService::Client::Client(
563        const sp<MediaPlayerService>& service, pid_t pid,
564        int32_t connId, const sp<IMediaPlayerClient>& client,
565        int audioSessionId, uid_t uid)
566{
567    ALOGV("Client(%d) constructor", connId);
568    mPid = pid;
569    mConnId = connId;
570    mService = service;
571    mClient = client;
572    mLoop = false;
573    mStatus = NO_INIT;
574    mAudioSessionId = audioSessionId;
575    mUID = uid;
576    mRetransmitEndpointValid = false;
577    mAudioAttributes = NULL;
578
579#if CALLBACK_ANTAGONIZER
580    ALOGD("create Antagonizer");
581    mAntagonizer = new Antagonizer(notify, this);
582#endif
583}
584
585MediaPlayerService::Client::~Client()
586{
587    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
588    mAudioOutput.clear();
589    wp<Client> client(this);
590    disconnect();
591    mService->removeClient(client);
592    if (mAudioAttributes != NULL) {
593        free(mAudioAttributes);
594    }
595}
596
597void MediaPlayerService::Client::disconnect()
598{
599    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
600    // grab local reference and clear main reference to prevent future
601    // access to object
602    sp<MediaPlayerBase> p;
603    {
604        Mutex::Autolock l(mLock);
605        p = mPlayer;
606        mClient.clear();
607    }
608
609    mPlayer.clear();
610
611    // clear the notification to prevent callbacks to dead client
612    // and reset the player. We assume the player will serialize
613    // access to itself if necessary.
614    if (p != 0) {
615        p->setNotifyCallback(0, 0);
616#if CALLBACK_ANTAGONIZER
617        ALOGD("kill Antagonizer");
618        mAntagonizer->kill();
619#endif
620        p->reset();
621    }
622
623    disconnectNativeWindow();
624
625    IPCThreadState::self()->flushCommands();
626}
627
628sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
629{
630    // determine if we have the right player type
631    sp<MediaPlayerBase> p = mPlayer;
632    if ((p != NULL) && (p->playerType() != playerType)) {
633        ALOGV("delete player");
634        p.clear();
635    }
636    if (p == NULL) {
637        p = MediaPlayerFactory::createPlayer(playerType, this, notify);
638    }
639
640    if (p != NULL) {
641        p->setUID(mUID);
642    }
643
644    return p;
645}
646
647sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
648        player_type playerType)
649{
650    ALOGV("player type = %d", playerType);
651
652    // create the right type of player
653    sp<MediaPlayerBase> p = createPlayer(playerType);
654    if (p == NULL) {
655        return p;
656    }
657
658    if (!p->hardwareOutput()) {
659        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
660                mPid, mAudioAttributes);
661        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
662    }
663
664    return p;
665}
666
667void MediaPlayerService::Client::setDataSource_post(
668        const sp<MediaPlayerBase>& p,
669        status_t status)
670{
671    ALOGV(" setDataSource");
672    mStatus = status;
673    if (mStatus != OK) {
674        ALOGE("  error: %d", mStatus);
675        return;
676    }
677
678    // Set the re-transmission endpoint if one was chosen.
679    if (mRetransmitEndpointValid) {
680        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
681        if (mStatus != NO_ERROR) {
682            ALOGE("setRetransmitEndpoint error: %d", mStatus);
683        }
684    }
685
686    if (mStatus == OK) {
687        mPlayer = p;
688    }
689}
690
691status_t MediaPlayerService::Client::setDataSource(
692        const sp<IMediaHTTPService> &httpService,
693        const char *url,
694        const KeyedVector<String8, String8> *headers)
695{
696    ALOGV("setDataSource(%s)", url);
697    if (url == NULL)
698        return UNKNOWN_ERROR;
699
700    if ((strncmp(url, "http://", 7) == 0) ||
701        (strncmp(url, "https://", 8) == 0) ||
702        (strncmp(url, "rtsp://", 7) == 0)) {
703        if (!checkPermission("android.permission.INTERNET")) {
704            return PERMISSION_DENIED;
705        }
706    }
707
708    if (strncmp(url, "content://", 10) == 0) {
709        // get a filedescriptor for the content Uri and
710        // pass it to the setDataSource(fd) method
711
712        String16 url16(url);
713        int fd = android::openContentProviderFile(url16);
714        if (fd < 0)
715        {
716            ALOGE("Couldn't open fd for %s", url);
717            return UNKNOWN_ERROR;
718        }
719        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
720        close(fd);
721        return mStatus;
722    } else {
723        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
724        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
725        if (p == NULL) {
726            return NO_INIT;
727        }
728
729        setDataSource_post(p, p->setDataSource(httpService, url, headers));
730        return mStatus;
731    }
732}
733
734status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
735{
736    ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
737    struct stat sb;
738    int ret = fstat(fd, &sb);
739    if (ret != 0) {
740        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
741        return UNKNOWN_ERROR;
742    }
743
744    ALOGV("st_dev  = %llu", sb.st_dev);
745    ALOGV("st_mode = %u", sb.st_mode);
746    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
747    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
748    ALOGV("st_size = %llu", sb.st_size);
749
750    if (offset >= sb.st_size) {
751        ALOGE("offset error");
752        ::close(fd);
753        return UNKNOWN_ERROR;
754    }
755    if (offset + length > sb.st_size) {
756        length = sb.st_size - offset;
757        ALOGV("calculated length = %lld", length);
758    }
759
760    player_type playerType = MediaPlayerFactory::getPlayerType(this,
761                                                               fd,
762                                                               offset,
763                                                               length);
764    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
765    if (p == NULL) {
766        return NO_INIT;
767    }
768
769    // now set data source
770    setDataSource_post(p, p->setDataSource(fd, offset, length));
771    return mStatus;
772}
773
774status_t MediaPlayerService::Client::setDataSource(
775        const sp<IStreamSource> &source) {
776    // create the right type of player
777    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
778    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
779    if (p == NULL) {
780        return NO_INIT;
781    }
782
783    // now set data source
784    setDataSource_post(p, p->setDataSource(source));
785    return mStatus;
786}
787
788void MediaPlayerService::Client::disconnectNativeWindow() {
789    if (mConnectedWindow != NULL) {
790        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
791                NATIVE_WINDOW_API_MEDIA);
792
793        if (err != OK) {
794            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
795                    strerror(-err), err);
796        }
797    }
798    mConnectedWindow.clear();
799}
800
801status_t MediaPlayerService::Client::setVideoSurfaceTexture(
802        const sp<IGraphicBufferProducer>& bufferProducer)
803{
804    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
805    sp<MediaPlayerBase> p = getPlayer();
806    if (p == 0) return UNKNOWN_ERROR;
807
808    sp<IBinder> binder(IInterface::asBinder(bufferProducer));
809    if (mConnectedWindowBinder == binder) {
810        return OK;
811    }
812
813    sp<ANativeWindow> anw;
814    if (bufferProducer != NULL) {
815        anw = new Surface(bufferProducer, true /* controlledByApp */);
816        status_t err = native_window_api_connect(anw.get(),
817                NATIVE_WINDOW_API_MEDIA);
818
819        if (err != OK) {
820            ALOGE("setVideoSurfaceTexture failed: %d", err);
821            // Note that we must do the reset before disconnecting from the ANW.
822            // Otherwise queue/dequeue calls could be made on the disconnected
823            // ANW, which may result in errors.
824            reset();
825
826            disconnectNativeWindow();
827
828            return err;
829        }
830    }
831
832    // Note that we must set the player's new GraphicBufferProducer before
833    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
834    // on the disconnected ANW, which may result in errors.
835    status_t err = p->setVideoSurfaceTexture(bufferProducer);
836
837    disconnectNativeWindow();
838
839    mConnectedWindow = anw;
840
841    if (err == OK) {
842        mConnectedWindowBinder = binder;
843    } else {
844        disconnectNativeWindow();
845    }
846
847    return err;
848}
849
850status_t MediaPlayerService::Client::invoke(const Parcel& request,
851                                            Parcel *reply)
852{
853    sp<MediaPlayerBase> p = getPlayer();
854    if (p == NULL) return UNKNOWN_ERROR;
855    return p->invoke(request, reply);
856}
857
858// This call doesn't need to access the native player.
859status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
860{
861    status_t status;
862    media::Metadata::Filter allow, drop;
863
864    if (unmarshallFilter(filter, &allow, &status) &&
865        unmarshallFilter(filter, &drop, &status)) {
866        Mutex::Autolock lock(mLock);
867
868        mMetadataAllow = allow;
869        mMetadataDrop = drop;
870    }
871    return status;
872}
873
874status_t MediaPlayerService::Client::getMetadata(
875        bool update_only, bool /*apply_filter*/, Parcel *reply)
876{
877    sp<MediaPlayerBase> player = getPlayer();
878    if (player == 0) return UNKNOWN_ERROR;
879
880    status_t status;
881    // Placeholder for the return code, updated by the caller.
882    reply->writeInt32(-1);
883
884    media::Metadata::Filter ids;
885
886    // We don't block notifications while we fetch the data. We clear
887    // mMetadataUpdated first so we don't lose notifications happening
888    // during the rest of this call.
889    {
890        Mutex::Autolock lock(mLock);
891        if (update_only) {
892            ids = mMetadataUpdated;
893        }
894        mMetadataUpdated.clear();
895    }
896
897    media::Metadata metadata(reply);
898
899    metadata.appendHeader();
900    status = player->getMetadata(ids, reply);
901
902    if (status != OK) {
903        metadata.resetParcel();
904        ALOGE("getMetadata failed %d", status);
905        return status;
906    }
907
908    // FIXME: Implement filtering on the result. Not critical since
909    // filtering takes place on the update notifications already. This
910    // would be when all the metadata are fetch and a filter is set.
911
912    // Everything is fine, update the metadata length.
913    metadata.updateLength();
914    return OK;
915}
916
917status_t MediaPlayerService::Client::prepareAsync()
918{
919    ALOGV("[%d] prepareAsync", mConnId);
920    sp<MediaPlayerBase> p = getPlayer();
921    if (p == 0) return UNKNOWN_ERROR;
922    status_t ret = p->prepareAsync();
923#if CALLBACK_ANTAGONIZER
924    ALOGD("start Antagonizer");
925    if (ret == NO_ERROR) mAntagonizer->start();
926#endif
927    return ret;
928}
929
930status_t MediaPlayerService::Client::start()
931{
932    ALOGV("[%d] start", mConnId);
933    sp<MediaPlayerBase> p = getPlayer();
934    if (p == 0) return UNKNOWN_ERROR;
935    p->setLooping(mLoop);
936    return p->start();
937}
938
939status_t MediaPlayerService::Client::stop()
940{
941    ALOGV("[%d] stop", mConnId);
942    sp<MediaPlayerBase> p = getPlayer();
943    if (p == 0) return UNKNOWN_ERROR;
944    return p->stop();
945}
946
947status_t MediaPlayerService::Client::pause()
948{
949    ALOGV("[%d] pause", mConnId);
950    sp<MediaPlayerBase> p = getPlayer();
951    if (p == 0) return UNKNOWN_ERROR;
952    return p->pause();
953}
954
955status_t MediaPlayerService::Client::isPlaying(bool* state)
956{
957    *state = false;
958    sp<MediaPlayerBase> p = getPlayer();
959    if (p == 0) return UNKNOWN_ERROR;
960    *state = p->isPlaying();
961    ALOGV("[%d] isPlaying: %d", mConnId, *state);
962    return NO_ERROR;
963}
964
965status_t MediaPlayerService::Client::setPlaybackRate(float rate)
966{
967    ALOGV("[%d] setPlaybackRate(%f)", mConnId, rate);
968    sp<MediaPlayerBase> p = getPlayer();
969    if (p == 0) return UNKNOWN_ERROR;
970    return p->setPlaybackRate(rate);
971}
972
973status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
974{
975    ALOGV("getCurrentPosition");
976    sp<MediaPlayerBase> p = getPlayer();
977    if (p == 0) return UNKNOWN_ERROR;
978    status_t ret = p->getCurrentPosition(msec);
979    if (ret == NO_ERROR) {
980        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
981    } else {
982        ALOGE("getCurrentPosition returned %d", ret);
983    }
984    return ret;
985}
986
987status_t MediaPlayerService::Client::getDuration(int *msec)
988{
989    ALOGV("getDuration");
990    sp<MediaPlayerBase> p = getPlayer();
991    if (p == 0) return UNKNOWN_ERROR;
992    status_t ret = p->getDuration(msec);
993    if (ret == NO_ERROR) {
994        ALOGV("[%d] getDuration = %d", mConnId, *msec);
995    } else {
996        ALOGE("getDuration returned %d", ret);
997    }
998    return ret;
999}
1000
1001status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1002    ALOGV("setNextPlayer");
1003    Mutex::Autolock l(mLock);
1004    sp<Client> c = static_cast<Client*>(player.get());
1005    mNextClient = c;
1006
1007    if (c != NULL) {
1008        if (mAudioOutput != NULL) {
1009            mAudioOutput->setNextOutput(c->mAudioOutput);
1010        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1011            ALOGE("no current audio output");
1012        }
1013
1014        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1015            mPlayer->setNextPlayer(mNextClient->getPlayer());
1016        }
1017    }
1018
1019    return OK;
1020}
1021
1022status_t MediaPlayerService::Client::seekTo(int msec)
1023{
1024    ALOGV("[%d] seekTo(%d)", mConnId, msec);
1025    sp<MediaPlayerBase> p = getPlayer();
1026    if (p == 0) return UNKNOWN_ERROR;
1027    return p->seekTo(msec);
1028}
1029
1030status_t MediaPlayerService::Client::reset()
1031{
1032    ALOGV("[%d] reset", mConnId);
1033    mRetransmitEndpointValid = false;
1034    sp<MediaPlayerBase> p = getPlayer();
1035    if (p == 0) return UNKNOWN_ERROR;
1036    return p->reset();
1037}
1038
1039status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1040{
1041    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1042    // TODO: for hardware output, call player instead
1043    Mutex::Autolock l(mLock);
1044    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1045    return NO_ERROR;
1046}
1047
1048status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1049{
1050    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1051    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1052    unmarshallAudioAttributes(parcel, mAudioAttributes);
1053
1054    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1055            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1056            mAudioAttributes->tags);
1057
1058    if (mAudioOutput != 0) {
1059        mAudioOutput->setAudioAttributes(mAudioAttributes);
1060    }
1061    return NO_ERROR;
1062}
1063
1064status_t MediaPlayerService::Client::setLooping(int loop)
1065{
1066    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1067    mLoop = loop;
1068    sp<MediaPlayerBase> p = getPlayer();
1069    if (p != 0) return p->setLooping(loop);
1070    return NO_ERROR;
1071}
1072
1073status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1074{
1075    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1076
1077    // for hardware output, call player instead
1078    sp<MediaPlayerBase> p = getPlayer();
1079    {
1080      Mutex::Autolock l(mLock);
1081      if (p != 0 && p->hardwareOutput()) {
1082          MediaPlayerHWInterface* hwp =
1083                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1084          return hwp->setVolume(leftVolume, rightVolume);
1085      } else {
1086          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1087          return NO_ERROR;
1088      }
1089    }
1090
1091    return NO_ERROR;
1092}
1093
1094status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1095{
1096    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1097    Mutex::Autolock l(mLock);
1098    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1099    return NO_ERROR;
1100}
1101
1102status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1103{
1104    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1105    Mutex::Autolock l(mLock);
1106    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1107    return NO_ERROR;
1108}
1109
1110status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1111    ALOGV("[%d] setParameter(%d)", mConnId, key);
1112    switch (key) {
1113    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1114    {
1115        Mutex::Autolock l(mLock);
1116        return setAudioAttributes_l(request);
1117    }
1118    default:
1119        sp<MediaPlayerBase> p = getPlayer();
1120        if (p == 0) { return UNKNOWN_ERROR; }
1121        return p->setParameter(key, request);
1122    }
1123}
1124
1125status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1126    ALOGV("[%d] getParameter(%d)", mConnId, key);
1127    sp<MediaPlayerBase> p = getPlayer();
1128    if (p == 0) return UNKNOWN_ERROR;
1129    return p->getParameter(key, reply);
1130}
1131
1132status_t MediaPlayerService::Client::setRetransmitEndpoint(
1133        const struct sockaddr_in* endpoint) {
1134
1135    if (NULL != endpoint) {
1136        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1137        uint16_t p = ntohs(endpoint->sin_port);
1138        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1139                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1140    } else {
1141        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1142    }
1143
1144    sp<MediaPlayerBase> p = getPlayer();
1145
1146    // Right now, the only valid time to set a retransmit endpoint is before
1147    // player selection has been made (since the presence or absence of a
1148    // retransmit endpoint is going to determine which player is selected during
1149    // setDataSource).
1150    if (p != 0) return INVALID_OPERATION;
1151
1152    if (NULL != endpoint) {
1153        mRetransmitEndpoint = *endpoint;
1154        mRetransmitEndpointValid = true;
1155    } else {
1156        mRetransmitEndpointValid = false;
1157    }
1158
1159    return NO_ERROR;
1160}
1161
1162status_t MediaPlayerService::Client::getRetransmitEndpoint(
1163        struct sockaddr_in* endpoint)
1164{
1165    if (NULL == endpoint)
1166        return BAD_VALUE;
1167
1168    sp<MediaPlayerBase> p = getPlayer();
1169
1170    if (p != NULL)
1171        return p->getRetransmitEndpoint(endpoint);
1172
1173    if (!mRetransmitEndpointValid)
1174        return NO_INIT;
1175
1176    *endpoint = mRetransmitEndpoint;
1177
1178    return NO_ERROR;
1179}
1180
1181void MediaPlayerService::Client::notify(
1182        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1183{
1184    Client* client = static_cast<Client*>(cookie);
1185    if (client == NULL) {
1186        return;
1187    }
1188
1189    sp<IMediaPlayerClient> c;
1190    {
1191        Mutex::Autolock l(client->mLock);
1192        c = client->mClient;
1193        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1194            if (client->mAudioOutput != NULL)
1195                client->mAudioOutput->switchToNextOutput();
1196            client->mNextClient->start();
1197            client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1198        }
1199    }
1200
1201    if (MEDIA_INFO == msg &&
1202        MEDIA_INFO_METADATA_UPDATE == ext1) {
1203        const media::Metadata::Type metadata_type = ext2;
1204
1205        if(client->shouldDropMetadata(metadata_type)) {
1206            return;
1207        }
1208
1209        // Update the list of metadata that have changed. getMetadata
1210        // also access mMetadataUpdated and clears it.
1211        client->addNewMetadataUpdate(metadata_type);
1212    }
1213
1214    if (c != NULL) {
1215        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1216        c->notify(msg, ext1, ext2, obj);
1217    }
1218}
1219
1220
1221bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1222{
1223    Mutex::Autolock lock(mLock);
1224
1225    if (findMetadata(mMetadataDrop, code)) {
1226        return true;
1227    }
1228
1229    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1230        return false;
1231    } else {
1232        return true;
1233    }
1234}
1235
1236
1237void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1238    Mutex::Autolock lock(mLock);
1239    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1240        mMetadataUpdated.add(metadata_type);
1241    }
1242}
1243
1244#if CALLBACK_ANTAGONIZER
1245const int Antagonizer::interval = 10000; // 10 msecs
1246
1247Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1248    mExit(false), mActive(false), mClient(client), mCb(cb)
1249{
1250    createThread(callbackThread, this);
1251}
1252
1253void Antagonizer::kill()
1254{
1255    Mutex::Autolock _l(mLock);
1256    mActive = false;
1257    mExit = true;
1258    mCondition.wait(mLock);
1259}
1260
1261int Antagonizer::callbackThread(void* user)
1262{
1263    ALOGD("Antagonizer started");
1264    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1265    while (!p->mExit) {
1266        if (p->mActive) {
1267            ALOGV("send event");
1268            p->mCb(p->mClient, 0, 0, 0);
1269        }
1270        usleep(interval);
1271    }
1272    Mutex::Autolock _l(p->mLock);
1273    p->mCondition.signal();
1274    ALOGD("Antagonizer stopped");
1275    return 0;
1276}
1277#endif
1278
1279#undef LOG_TAG
1280#define LOG_TAG "AudioSink"
1281MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid, int pid,
1282        const audio_attributes_t* attr)
1283    : mCallback(NULL),
1284      mCallbackCookie(NULL),
1285      mCallbackData(NULL),
1286      mBytesWritten(0),
1287      mSessionId(sessionId),
1288      mUid(uid),
1289      mPid(pid),
1290      mFlags(AUDIO_OUTPUT_FLAG_NONE) {
1291    ALOGV("AudioOutput(%d)", sessionId);
1292    mStreamType = AUDIO_STREAM_MUSIC;
1293    mLeftVolume = 1.0;
1294    mRightVolume = 1.0;
1295    mPlaybackRatePermille = 1000;
1296    mSampleRateHz = 0;
1297    mMsecsPerFrame = 0;
1298    mAuxEffectId = 0;
1299    mSendLevel = 0.0;
1300    setMinBufferCount();
1301    mAttributes = attr;
1302}
1303
1304MediaPlayerService::AudioOutput::~AudioOutput()
1305{
1306    close();
1307    delete mCallbackData;
1308}
1309
1310void MediaPlayerService::AudioOutput::setMinBufferCount()
1311{
1312    char value[PROPERTY_VALUE_MAX];
1313    if (property_get("ro.kernel.qemu", value, 0)) {
1314        mIsOnEmulator = true;
1315        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1316    }
1317}
1318
1319bool MediaPlayerService::AudioOutput::isOnEmulator()
1320{
1321    setMinBufferCount();
1322    return mIsOnEmulator;
1323}
1324
1325int MediaPlayerService::AudioOutput::getMinBufferCount()
1326{
1327    setMinBufferCount();
1328    return mMinBufferCount;
1329}
1330
1331ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1332{
1333    if (mTrack == 0) return NO_INIT;
1334    return mTrack->frameCount() * frameSize();
1335}
1336
1337ssize_t MediaPlayerService::AudioOutput::frameCount() const
1338{
1339    if (mTrack == 0) return NO_INIT;
1340    return mTrack->frameCount();
1341}
1342
1343ssize_t MediaPlayerService::AudioOutput::channelCount() const
1344{
1345    if (mTrack == 0) return NO_INIT;
1346    return mTrack->channelCount();
1347}
1348
1349ssize_t MediaPlayerService::AudioOutput::frameSize() const
1350{
1351    if (mTrack == 0) return NO_INIT;
1352    return mTrack->frameSize();
1353}
1354
1355uint32_t MediaPlayerService::AudioOutput::latency () const
1356{
1357    if (mTrack == 0) return 0;
1358    return mTrack->latency();
1359}
1360
1361float MediaPlayerService::AudioOutput::msecsPerFrame() const
1362{
1363    return mMsecsPerFrame;
1364}
1365
1366status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1367{
1368    if (mTrack == 0) return NO_INIT;
1369    return mTrack->getPosition(position);
1370}
1371
1372status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1373{
1374    if (mTrack == 0) return NO_INIT;
1375    return mTrack->getTimestamp(ts);
1376}
1377
1378status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1379{
1380    if (mTrack == 0) return NO_INIT;
1381    *frameswritten = mBytesWritten / frameSize();
1382    return OK;
1383}
1384
1385status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1386{
1387    if (mTrack == 0) return NO_INIT;
1388    return mTrack->setParameters(keyValuePairs);
1389}
1390
1391String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1392{
1393    if (mTrack == 0) return String8::empty();
1394    return mTrack->getParameters(keys);
1395}
1396
1397void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1398    mAttributes = attributes;
1399}
1400
1401void MediaPlayerService::AudioOutput::deleteRecycledTrack()
1402{
1403    ALOGV("deleteRecycledTrack");
1404
1405    if (mRecycledTrack != 0) {
1406
1407        if (mCallbackData != NULL) {
1408            mCallbackData->setOutput(NULL);
1409            mCallbackData->endTrackSwitch();
1410        }
1411
1412        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1413            mRecycledTrack->flush();
1414        }
1415        // An offloaded track isn't flushed because the STREAM_END is reported
1416        // slightly prematurely to allow time for the gapless track switch
1417        // but this means that if we decide not to recycle the track there
1418        // could be a small amount of residual data still playing. We leave
1419        // AudioFlinger to drain the track.
1420
1421        mRecycledTrack.clear();
1422        delete mCallbackData;
1423        mCallbackData = NULL;
1424        close();
1425    }
1426}
1427
1428status_t MediaPlayerService::AudioOutput::open(
1429        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1430        audio_format_t format, int bufferCount,
1431        AudioCallback cb, void *cookie,
1432        audio_output_flags_t flags,
1433        const audio_offload_info_t *offloadInfo)
1434{
1435    mCallback = cb;
1436    mCallbackCookie = cookie;
1437
1438    // Check argument "bufferCount" against the mininum buffer count
1439    if (bufferCount < mMinBufferCount) {
1440        ALOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1441        bufferCount = mMinBufferCount;
1442
1443    }
1444    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1445                format, bufferCount, mSessionId, flags);
1446    uint32_t afSampleRate;
1447    size_t afFrameCount;
1448    size_t frameCount;
1449
1450    // offloading is only supported in callback mode for now.
1451    // offloadInfo must be present if offload flag is set
1452    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1453            ((cb == NULL) || (offloadInfo == NULL))) {
1454        return BAD_VALUE;
1455    }
1456
1457    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1458        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1459    } else {
1460        uint32_t afSampleRate;
1461        size_t afFrameCount;
1462
1463        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1464            return NO_INIT;
1465        }
1466        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1467            return NO_INIT;
1468        }
1469
1470        frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1471    }
1472
1473    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1474        channelMask = audio_channel_out_mask_from_count(channelCount);
1475        if (0 == channelMask) {
1476            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1477            return NO_INIT;
1478        }
1479    }
1480
1481    // Check whether we can recycle the track
1482    bool reuse = false;
1483    bool bothOffloaded = false;
1484
1485    if (mRecycledTrack != 0) {
1486        // check whether we are switching between two offloaded tracks
1487        bothOffloaded = (flags & mRecycledTrack->getFlags()
1488                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1489
1490        // check if the existing track can be reused as-is, or if a new track needs to be created.
1491        reuse = true;
1492
1493        if ((mCallbackData == NULL && mCallback != NULL) ||
1494                (mCallbackData != NULL && mCallback == NULL)) {
1495            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1496            ALOGV("can't chain callback and write");
1497            reuse = false;
1498        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1499                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1500            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1501                  mRecycledTrack->getSampleRate(), sampleRate,
1502                  mRecycledTrack->channelCount(), channelCount);
1503            reuse = false;
1504        } else if (flags != mFlags) {
1505            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1506            reuse = false;
1507        } else if (mRecycledTrack->format() != format) {
1508            reuse = false;
1509        }
1510    } else {
1511        ALOGV("no track available to recycle");
1512    }
1513
1514    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1515
1516    // If we can't recycle and both tracks are offloaded
1517    // we must close the previous output before opening a new one
1518    if (bothOffloaded && !reuse) {
1519        ALOGV("both offloaded and not recycling");
1520        deleteRecycledTrack();
1521    }
1522
1523    sp<AudioTrack> t;
1524    CallbackData *newcbd = NULL;
1525
1526    // We don't attempt to create a new track if we are recycling an
1527    // offloaded track. But, if we are recycling a non-offloaded or we
1528    // are switching where one is offloaded and one isn't then we create
1529    // the new track in advance so that we can read additional stream info
1530
1531    if (!(reuse && bothOffloaded)) {
1532        ALOGV("creating new AudioTrack");
1533
1534        if (mCallback != NULL) {
1535            newcbd = new CallbackData(this);
1536            t = new AudioTrack(
1537                    mStreamType,
1538                    sampleRate,
1539                    format,
1540                    channelMask,
1541                    frameCount,
1542                    flags,
1543                    CallbackWrapper,
1544                    newcbd,
1545                    0,  // notification frames
1546                    mSessionId,
1547                    AudioTrack::TRANSFER_CALLBACK,
1548                    offloadInfo,
1549                    mUid,
1550                    mPid,
1551                    mAttributes);
1552        } else {
1553            t = new AudioTrack(
1554                    mStreamType,
1555                    sampleRate,
1556                    format,
1557                    channelMask,
1558                    frameCount,
1559                    flags,
1560                    NULL, // callback
1561                    NULL, // user data
1562                    0, // notification frames
1563                    mSessionId,
1564                    AudioTrack::TRANSFER_DEFAULT,
1565                    NULL, // offload info
1566                    mUid,
1567                    mPid,
1568                    mAttributes);
1569        }
1570
1571        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1572            ALOGE("Unable to create audio track");
1573            delete newcbd;
1574            return NO_INIT;
1575        } else {
1576            // successful AudioTrack initialization implies a legacy stream type was generated
1577            // from the audio attributes
1578            mStreamType = t->streamType();
1579        }
1580    }
1581
1582    if (reuse) {
1583        CHECK(mRecycledTrack != NULL);
1584
1585        if (!bothOffloaded) {
1586            if (mRecycledTrack->frameCount() != t->frameCount()) {
1587                ALOGV("framecount differs: %u/%u frames",
1588                      mRecycledTrack->frameCount(), t->frameCount());
1589                reuse = false;
1590            }
1591        }
1592
1593        if (reuse) {
1594            ALOGV("chaining to next output and recycling track");
1595            close();
1596            mTrack = mRecycledTrack;
1597            mRecycledTrack.clear();
1598            if (mCallbackData != NULL) {
1599                mCallbackData->setOutput(this);
1600            }
1601            delete newcbd;
1602            return OK;
1603        }
1604    }
1605
1606    // we're not going to reuse the track, unblock and flush it
1607    // this was done earlier if both tracks are offloaded
1608    if (!bothOffloaded) {
1609        deleteRecycledTrack();
1610    }
1611
1612    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1613
1614    mCallbackData = newcbd;
1615    ALOGV("setVolume");
1616    t->setVolume(mLeftVolume, mRightVolume);
1617
1618    mSampleRateHz = sampleRate;
1619    mFlags = flags;
1620    mMsecsPerFrame = mPlaybackRatePermille / (float) sampleRate;
1621    uint32_t pos;
1622    if (t->getPosition(&pos) == OK) {
1623        mBytesWritten = uint64_t(pos) * t->frameSize();
1624    }
1625    mTrack = t;
1626
1627    status_t res = NO_ERROR;
1628    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1629        res = t->setSampleRate(mPlaybackRatePermille * mSampleRateHz / 1000);
1630        if (res == NO_ERROR) {
1631            t->setAuxEffectSendLevel(mSendLevel);
1632            res = t->attachAuxEffect(mAuxEffectId);
1633        }
1634    }
1635    ALOGV("open() DONE status %d", res);
1636    return res;
1637}
1638
1639status_t MediaPlayerService::AudioOutput::start()
1640{
1641    ALOGV("start");
1642    if (mCallbackData != NULL) {
1643        mCallbackData->endTrackSwitch();
1644    }
1645    if (mTrack != 0) {
1646        mTrack->setVolume(mLeftVolume, mRightVolume);
1647        mTrack->setAuxEffectSendLevel(mSendLevel);
1648        return mTrack->start();
1649    }
1650    return NO_INIT;
1651}
1652
1653void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1654    mNextOutput = nextOutput;
1655}
1656
1657
1658void MediaPlayerService::AudioOutput::switchToNextOutput() {
1659    ALOGV("switchToNextOutput");
1660    if (mNextOutput != NULL) {
1661        if (mCallbackData != NULL) {
1662            mCallbackData->beginTrackSwitch();
1663        }
1664        delete mNextOutput->mCallbackData;
1665        mNextOutput->mCallbackData = mCallbackData;
1666        mCallbackData = NULL;
1667        mNextOutput->mRecycledTrack = mTrack;
1668        mTrack.clear();
1669        mNextOutput->mSampleRateHz = mSampleRateHz;
1670        mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1671        mNextOutput->mBytesWritten = mBytesWritten;
1672        mNextOutput->mFlags = mFlags;
1673    }
1674}
1675
1676ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1677{
1678    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1679
1680    //ALOGV("write(%p, %u)", buffer, size);
1681    if (mTrack != 0) {
1682        ssize_t ret = mTrack->write(buffer, size);
1683        if (ret >= 0) {
1684            mBytesWritten += ret;
1685        }
1686        return ret;
1687    }
1688    return NO_INIT;
1689}
1690
1691void MediaPlayerService::AudioOutput::stop()
1692{
1693    ALOGV("stop");
1694    if (mTrack != 0) mTrack->stop();
1695}
1696
1697void MediaPlayerService::AudioOutput::flush()
1698{
1699    ALOGV("flush");
1700    if (mTrack != 0) mTrack->flush();
1701}
1702
1703void MediaPlayerService::AudioOutput::pause()
1704{
1705    ALOGV("pause");
1706    if (mTrack != 0) mTrack->pause();
1707}
1708
1709void MediaPlayerService::AudioOutput::close()
1710{
1711    ALOGV("close");
1712    mTrack.clear();
1713}
1714
1715void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1716{
1717    ALOGV("setVolume(%f, %f)", left, right);
1718    mLeftVolume = left;
1719    mRightVolume = right;
1720    if (mTrack != 0) {
1721        mTrack->setVolume(left, right);
1722    }
1723}
1724
1725status_t MediaPlayerService::AudioOutput::setPlaybackRatePermille(int32_t ratePermille)
1726{
1727    ALOGV("setPlaybackRatePermille(%d)", ratePermille);
1728    status_t res = NO_ERROR;
1729    if (mTrack != 0) {
1730        res = mTrack->setSampleRate(ratePermille * mSampleRateHz / 1000);
1731    } else {
1732        res = NO_INIT;
1733    }
1734    mPlaybackRatePermille = ratePermille;
1735    if (mSampleRateHz != 0) {
1736        mMsecsPerFrame = mPlaybackRatePermille / (float) mSampleRateHz;
1737    }
1738    return res;
1739}
1740
1741status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1742{
1743    ALOGV("setAuxEffectSendLevel(%f)", level);
1744    mSendLevel = level;
1745    if (mTrack != 0) {
1746        return mTrack->setAuxEffectSendLevel(level);
1747    }
1748    return NO_ERROR;
1749}
1750
1751status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1752{
1753    ALOGV("attachAuxEffect(%d)", effectId);
1754    mAuxEffectId = effectId;
1755    if (mTrack != 0) {
1756        return mTrack->attachAuxEffect(effectId);
1757    }
1758    return NO_ERROR;
1759}
1760
1761// static
1762void MediaPlayerService::AudioOutput::CallbackWrapper(
1763        int event, void *cookie, void *info) {
1764    //ALOGV("callbackwrapper");
1765    CallbackData *data = (CallbackData*)cookie;
1766    data->lock();
1767    AudioOutput *me = data->getOutput();
1768    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1769    if (me == NULL) {
1770        // no output set, likely because the track was scheduled to be reused
1771        // by another player, but the format turned out to be incompatible.
1772        data->unlock();
1773        if (buffer != NULL) {
1774            buffer->size = 0;
1775        }
1776        return;
1777    }
1778
1779    switch(event) {
1780    case AudioTrack::EVENT_MORE_DATA: {
1781        size_t actualSize = (*me->mCallback)(
1782                me, buffer->raw, buffer->size, me->mCallbackCookie,
1783                CB_EVENT_FILL_BUFFER);
1784
1785        if ((me->mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0 &&
1786            actualSize == 0 && buffer->size > 0 && me->mNextOutput == NULL) {
1787            // We've reached EOS but the audio track is not stopped yet,
1788            // keep playing silence.
1789
1790            memset(buffer->raw, 0, buffer->size);
1791            actualSize = buffer->size;
1792        }
1793
1794        buffer->size = actualSize;
1795        } break;
1796
1797
1798    case AudioTrack::EVENT_STREAM_END:
1799        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
1800        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
1801                me->mCallbackCookie, CB_EVENT_STREAM_END);
1802        break;
1803
1804    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
1805        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
1806        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
1807                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
1808        break;
1809
1810    default:
1811        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
1812    }
1813
1814    data->unlock();
1815}
1816
1817int MediaPlayerService::AudioOutput::getSessionId() const
1818{
1819    return mSessionId;
1820}
1821
1822uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
1823{
1824    if (mTrack == 0) return 0;
1825    return mTrack->getSampleRate();
1826}
1827
1828////////////////////////////////////////////////////////////////////////////////
1829
1830struct CallbackThread : public Thread {
1831    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1832                   MediaPlayerBase::AudioSink::AudioCallback cb,
1833                   void *cookie);
1834
1835protected:
1836    virtual ~CallbackThread();
1837
1838    virtual bool threadLoop();
1839
1840private:
1841    wp<MediaPlayerBase::AudioSink> mSink;
1842    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1843    void *mCookie;
1844    void *mBuffer;
1845    size_t mBufferSize;
1846
1847    CallbackThread(const CallbackThread &);
1848    CallbackThread &operator=(const CallbackThread &);
1849};
1850
1851CallbackThread::CallbackThread(
1852        const wp<MediaPlayerBase::AudioSink> &sink,
1853        MediaPlayerBase::AudioSink::AudioCallback cb,
1854        void *cookie)
1855    : mSink(sink),
1856      mCallback(cb),
1857      mCookie(cookie),
1858      mBuffer(NULL),
1859      mBufferSize(0) {
1860}
1861
1862CallbackThread::~CallbackThread() {
1863    if (mBuffer) {
1864        free(mBuffer);
1865        mBuffer = NULL;
1866    }
1867}
1868
1869bool CallbackThread::threadLoop() {
1870    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1871    if (sink == NULL) {
1872        return false;
1873    }
1874
1875    if (mBuffer == NULL) {
1876        mBufferSize = sink->bufferSize();
1877        mBuffer = malloc(mBufferSize);
1878    }
1879
1880    size_t actualSize =
1881        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
1882                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
1883
1884    if (actualSize > 0) {
1885        sink->write(mBuffer, actualSize);
1886        // Could return false on sink->write() error or short count.
1887        // Not necessarily appropriate but would work for AudioCache behavior.
1888    }
1889
1890    return true;
1891}
1892
1893////////////////////////////////////////////////////////////////////////////////
1894
1895void MediaPlayerService::addBatteryData(uint32_t params)
1896{
1897    Mutex::Autolock lock(mLock);
1898
1899    int32_t time = systemTime() / 1000000L;
1900
1901    // change audio output devices. This notification comes from AudioFlinger
1902    if ((params & kBatteryDataSpeakerOn)
1903            || (params & kBatteryDataOtherAudioDeviceOn)) {
1904
1905        int deviceOn[NUM_AUDIO_DEVICES];
1906        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1907            deviceOn[i] = 0;
1908        }
1909
1910        if ((params & kBatteryDataSpeakerOn)
1911                && (params & kBatteryDataOtherAudioDeviceOn)) {
1912            deviceOn[SPEAKER_AND_OTHER] = 1;
1913        } else if (params & kBatteryDataSpeakerOn) {
1914            deviceOn[SPEAKER] = 1;
1915        } else {
1916            deviceOn[OTHER_AUDIO_DEVICE] = 1;
1917        }
1918
1919        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1920            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
1921
1922                if (mBatteryAudio.refCount > 0) { // if playing audio
1923                    if (!deviceOn[i]) {
1924                        mBatteryAudio.lastTime[i] += time;
1925                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1926                        mBatteryAudio.lastTime[i] = 0;
1927                    } else {
1928                        mBatteryAudio.lastTime[i] = 0 - time;
1929                    }
1930                }
1931
1932                mBatteryAudio.deviceOn[i] = deviceOn[i];
1933            }
1934        }
1935        return;
1936    }
1937
1938    // an audio stream is started
1939    if (params & kBatteryDataAudioFlingerStart) {
1940        // record the start time only if currently no other audio
1941        // is being played
1942        if (mBatteryAudio.refCount == 0) {
1943            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1944                if (mBatteryAudio.deviceOn[i]) {
1945                    mBatteryAudio.lastTime[i] -= time;
1946                }
1947            }
1948        }
1949
1950        mBatteryAudio.refCount ++;
1951        return;
1952
1953    } else if (params & kBatteryDataAudioFlingerStop) {
1954        if (mBatteryAudio.refCount <= 0) {
1955            ALOGW("Battery track warning: refCount is <= 0");
1956            return;
1957        }
1958
1959        // record the stop time only if currently this is the only
1960        // audio being played
1961        if (mBatteryAudio.refCount == 1) {
1962            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1963                if (mBatteryAudio.deviceOn[i]) {
1964                    mBatteryAudio.lastTime[i] += time;
1965                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1966                    mBatteryAudio.lastTime[i] = 0;
1967                }
1968            }
1969        }
1970
1971        mBatteryAudio.refCount --;
1972        return;
1973    }
1974
1975    int uid = IPCThreadState::self()->getCallingUid();
1976    if (uid == AID_MEDIA) {
1977        return;
1978    }
1979    int index = mBatteryData.indexOfKey(uid);
1980
1981    if (index < 0) { // create a new entry for this UID
1982        BatteryUsageInfo info;
1983        info.audioTotalTime = 0;
1984        info.videoTotalTime = 0;
1985        info.audioLastTime = 0;
1986        info.videoLastTime = 0;
1987        info.refCount = 0;
1988
1989        if (mBatteryData.add(uid, info) == NO_MEMORY) {
1990            ALOGE("Battery track error: no memory for new app");
1991            return;
1992        }
1993    }
1994
1995    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
1996
1997    if (params & kBatteryDataCodecStarted) {
1998        if (params & kBatteryDataTrackAudio) {
1999            info.audioLastTime -= time;
2000            info.refCount ++;
2001        }
2002        if (params & kBatteryDataTrackVideo) {
2003            info.videoLastTime -= time;
2004            info.refCount ++;
2005        }
2006    } else {
2007        if (info.refCount == 0) {
2008            ALOGW("Battery track warning: refCount is already 0");
2009            return;
2010        } else if (info.refCount < 0) {
2011            ALOGE("Battery track error: refCount < 0");
2012            mBatteryData.removeItem(uid);
2013            return;
2014        }
2015
2016        if (params & kBatteryDataTrackAudio) {
2017            info.audioLastTime += time;
2018            info.refCount --;
2019        }
2020        if (params & kBatteryDataTrackVideo) {
2021            info.videoLastTime += time;
2022            info.refCount --;
2023        }
2024
2025        // no stream is being played by this UID
2026        if (info.refCount == 0) {
2027            info.audioTotalTime += info.audioLastTime;
2028            info.audioLastTime = 0;
2029            info.videoTotalTime += info.videoLastTime;
2030            info.videoLastTime = 0;
2031        }
2032    }
2033}
2034
2035status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2036    Mutex::Autolock lock(mLock);
2037
2038    // audio output devices usage
2039    int32_t time = systemTime() / 1000000L; //in ms
2040    int32_t totalTime;
2041
2042    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2043        totalTime = mBatteryAudio.totalTime[i];
2044
2045        if (mBatteryAudio.deviceOn[i]
2046            && (mBatteryAudio.lastTime[i] != 0)) {
2047                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2048                totalTime += tmpTime;
2049        }
2050
2051        reply->writeInt32(totalTime);
2052        // reset the total time
2053        mBatteryAudio.totalTime[i] = 0;
2054   }
2055
2056    // codec usage
2057    BatteryUsageInfo info;
2058    int size = mBatteryData.size();
2059
2060    reply->writeInt32(size);
2061    int i = 0;
2062
2063    while (i < size) {
2064        info = mBatteryData.valueAt(i);
2065
2066        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2067        reply->writeInt32(info.audioTotalTime);
2068        reply->writeInt32(info.videoTotalTime);
2069
2070        info.audioTotalTime = 0;
2071        info.videoTotalTime = 0;
2072
2073        // remove the UID entry where no stream is being played
2074        if (info.refCount <= 0) {
2075            mBatteryData.removeItemsAt(i);
2076            size --;
2077            i --;
2078        }
2079        i++;
2080    }
2081    return NO_ERROR;
2082}
2083} // namespace android
2084