MediaPlayerService.cpp revision 6d339f1f764bbd32e3381dae7bfa7c6c575bb493 
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)
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    SortedVector< sp<Client> > clients; //to serialise the mutex unlock & client destruction.
446    SortedVector< sp<MediaRecorderClient> > mediaRecorderClients;
447
448    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
449        snprintf(buffer, SIZE, "Permission Denial: "
450                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
451                IPCThreadState::self()->getCallingPid(),
452                IPCThreadState::self()->getCallingUid());
453        result.append(buffer);
454    } else {
455        Mutex::Autolock lock(mLock);
456        for (int i = 0, n = mClients.size(); i < n; ++i) {
457            sp<Client> c = mClients[i].promote();
458            if (c != 0) c->dump(fd, args);
459            clients.add(c);
460        }
461        if (mMediaRecorderClients.size() == 0) {
462                result.append(" No media recorder client\n\n");
463        } else {
464            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
465                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
466                if (c != 0) {
467                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
468                    result.append(buffer);
469                    write(fd, result.string(), result.size());
470                    result = "\n";
471                    c->dump(fd, args);
472                    mediaRecorderClients.add(c);
473                }
474            }
475        }
476
477        result.append(" Files opened and/or mapped:\n");
478        snprintf(buffer, SIZE, "/proc/%d/maps", getpid());
479        FILE *f = fopen(buffer, "r");
480        if (f) {
481            while (!feof(f)) {
482                fgets(buffer, SIZE, f);
483                if (strstr(buffer, " /storage/") ||
484                    strstr(buffer, " /system/sounds/") ||
485                    strstr(buffer, " /data/") ||
486                    strstr(buffer, " /system/media/")) {
487                    result.append("  ");
488                    result.append(buffer);
489                }
490            }
491            fclose(f);
492        } else {
493            result.append("couldn't open ");
494            result.append(buffer);
495            result.append("\n");
496        }
497
498        snprintf(buffer, SIZE, "/proc/%d/fd", getpid());
499        DIR *d = opendir(buffer);
500        if (d) {
501            struct dirent *ent;
502            while((ent = readdir(d)) != NULL) {
503                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
504                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", getpid(), ent->d_name);
505                    struct stat s;
506                    if (lstat(buffer, &s) == 0) {
507                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
508                            char linkto[256];
509                            int len = readlink(buffer, linkto, sizeof(linkto));
510                            if(len > 0) {
511                                if(len > 255) {
512                                    linkto[252] = '.';
513                                    linkto[253] = '.';
514                                    linkto[254] = '.';
515                                    linkto[255] = 0;
516                                } else {
517                                    linkto[len] = 0;
518                                }
519                                if (strstr(linkto, "/storage/") == linkto ||
520                                    strstr(linkto, "/system/sounds/") == linkto ||
521                                    strstr(linkto, "/data/") == linkto ||
522                                    strstr(linkto, "/system/media/") == linkto) {
523                                    result.append("  ");
524                                    result.append(buffer);
525                                    result.append(" -> ");
526                                    result.append(linkto);
527                                    result.append("\n");
528                                }
529                            }
530                        } else {
531                            result.append("  unexpected type for ");
532                            result.append(buffer);
533                            result.append("\n");
534                        }
535                    }
536                }
537            }
538            closedir(d);
539        } else {
540            result.append("couldn't open ");
541            result.append(buffer);
542            result.append("\n");
543        }
544
545        gLooperRoster.dump(fd, args);
546
547        bool dumpMem = false;
548        for (size_t i = 0; i < args.size(); i++) {
549            if (args[i] == String16("-m")) {
550                dumpMem = true;
551            }
552        }
553        if (dumpMem) {
554            dumpMemoryAddresses(fd);
555        }
556    }
557    write(fd, result.string(), result.size());
558    return NO_ERROR;
559}
560
561void MediaPlayerService::removeClient(wp<Client> client)
562{
563    Mutex::Autolock lock(mLock);
564    mClients.remove(client);
565}
566
567MediaPlayerService::Client::Client(
568        const sp<MediaPlayerService>& service, pid_t pid,
569        int32_t connId, const sp<IMediaPlayerClient>& client,
570        int audioSessionId, uid_t uid)
571{
572    ALOGV("Client(%d) constructor", connId);
573    mPid = pid;
574    mConnId = connId;
575    mService = service;
576    mClient = client;
577    mLoop = false;
578    mStatus = NO_INIT;
579    mAudioSessionId = audioSessionId;
580    mUID = uid;
581    mRetransmitEndpointValid = false;
582    mAudioAttributes = NULL;
583
584#if CALLBACK_ANTAGONIZER
585    ALOGD("create Antagonizer");
586    mAntagonizer = new Antagonizer(notify, this);
587#endif
588}
589
590MediaPlayerService::Client::~Client()
591{
592    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
593    mAudioOutput.clear();
594    wp<Client> client(this);
595    disconnect();
596    mService->removeClient(client);
597    if (mAudioAttributes != NULL) {
598        free(mAudioAttributes);
599    }
600}
601
602void MediaPlayerService::Client::disconnect()
603{
604    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
605    // grab local reference and clear main reference to prevent future
606    // access to object
607    sp<MediaPlayerBase> p;
608    {
609        Mutex::Autolock l(mLock);
610        p = mPlayer;
611        mClient.clear();
612    }
613
614    mPlayer.clear();
615
616    // clear the notification to prevent callbacks to dead client
617    // and reset the player. We assume the player will serialize
618    // access to itself if necessary.
619    if (p != 0) {
620        p->setNotifyCallback(0, 0);
621#if CALLBACK_ANTAGONIZER
622        ALOGD("kill Antagonizer");
623        mAntagonizer->kill();
624#endif
625        p->reset();
626    }
627
628    disconnectNativeWindow();
629
630    IPCThreadState::self()->flushCommands();
631}
632
633sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
634{
635    // determine if we have the right player type
636    sp<MediaPlayerBase> p = mPlayer;
637    if ((p != NULL) && (p->playerType() != playerType)) {
638        ALOGV("delete player");
639        p.clear();
640    }
641    if (p == NULL) {
642        p = MediaPlayerFactory::createPlayer(playerType, this, notify);
643    }
644
645    if (p != NULL) {
646        p->setUID(mUID);
647    }
648
649    return p;
650}
651
652sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
653        player_type playerType)
654{
655    ALOGV("player type = %d", playerType);
656
657    // create the right type of player
658    sp<MediaPlayerBase> p = createPlayer(playerType);
659    if (p == NULL) {
660        return p;
661    }
662
663    if (!p->hardwareOutput()) {
664        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
665                mPid, mAudioAttributes);
666        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
667    }
668
669    return p;
670}
671
672void MediaPlayerService::Client::setDataSource_post(
673        const sp<MediaPlayerBase>& p,
674        status_t status)
675{
676    ALOGV(" setDataSource");
677    mStatus = status;
678    if (mStatus != OK) {
679        ALOGE("  error: %d", mStatus);
680        return;
681    }
682
683    // Set the re-transmission endpoint if one was chosen.
684    if (mRetransmitEndpointValid) {
685        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
686        if (mStatus != NO_ERROR) {
687            ALOGE("setRetransmitEndpoint error: %d", mStatus);
688        }
689    }
690
691    if (mStatus == OK) {
692        mPlayer = p;
693    }
694}
695
696status_t MediaPlayerService::Client::setDataSource(
697        const sp<IMediaHTTPService> &httpService,
698        const char *url,
699        const KeyedVector<String8, String8> *headers)
700{
701    ALOGV("setDataSource(%s)", url);
702    if (url == NULL)
703        return UNKNOWN_ERROR;
704
705    if ((strncmp(url, "http://", 7) == 0) ||
706        (strncmp(url, "https://", 8) == 0) ||
707        (strncmp(url, "rtsp://", 7) == 0)) {
708        if (!checkPermission("android.permission.INTERNET")) {
709            return PERMISSION_DENIED;
710        }
711    }
712
713    if (strncmp(url, "content://", 10) == 0) {
714        // get a filedescriptor for the content Uri and
715        // pass it to the setDataSource(fd) method
716
717        String16 url16(url);
718        int fd = android::openContentProviderFile(url16);
719        if (fd < 0)
720        {
721            ALOGE("Couldn't open fd for %s", url);
722            return UNKNOWN_ERROR;
723        }
724        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
725        close(fd);
726        return mStatus;
727    } else {
728        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
729        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
730        if (p == NULL) {
731            return NO_INIT;
732        }
733
734        setDataSource_post(p, p->setDataSource(httpService, url, headers));
735        return mStatus;
736    }
737}
738
739status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
740{
741    ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
742    struct stat sb;
743    int ret = fstat(fd, &sb);
744    if (ret != 0) {
745        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
746        return UNKNOWN_ERROR;
747    }
748
749    ALOGV("st_dev  = %llu", sb.st_dev);
750    ALOGV("st_mode = %u", sb.st_mode);
751    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
752    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
753    ALOGV("st_size = %llu", sb.st_size);
754
755    if (offset >= sb.st_size) {
756        ALOGE("offset error");
757        ::close(fd);
758        return UNKNOWN_ERROR;
759    }
760    if (offset + length > sb.st_size) {
761        length = sb.st_size - offset;
762        ALOGV("calculated length = %lld", length);
763    }
764
765    player_type playerType = MediaPlayerFactory::getPlayerType(this,
766                                                               fd,
767                                                               offset,
768                                                               length);
769    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
770    if (p == NULL) {
771        return NO_INIT;
772    }
773
774    // now set data source
775    setDataSource_post(p, p->setDataSource(fd, offset, length));
776    return mStatus;
777}
778
779status_t MediaPlayerService::Client::setDataSource(
780        const sp<IStreamSource> &source) {
781    // create the right type of player
782    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
783    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
784    if (p == NULL) {
785        return NO_INIT;
786    }
787
788    // now set data source
789    setDataSource_post(p, p->setDataSource(source));
790    return mStatus;
791}
792
793status_t MediaPlayerService::Client::setDataSource(
794        const sp<IDataSource> &source) {
795    sp<DataSource> dataSource = DataSource::CreateFromIDataSource(source);
796    player_type playerType = MediaPlayerFactory::getPlayerType(this, dataSource);
797    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
798    if (p == NULL) {
799        return NO_INIT;
800    }
801    // now set data source
802    setDataSource_post(p, p->setDataSource(dataSource));
803    return mStatus;
804}
805
806void MediaPlayerService::Client::disconnectNativeWindow() {
807    if (mConnectedWindow != NULL) {
808        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
809                NATIVE_WINDOW_API_MEDIA);
810
811        if (err != OK) {
812            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
813                    strerror(-err), err);
814        }
815    }
816    mConnectedWindow.clear();
817}
818
819status_t MediaPlayerService::Client::setVideoSurfaceTexture(
820        const sp<IGraphicBufferProducer>& bufferProducer)
821{
822    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
823    sp<MediaPlayerBase> p = getPlayer();
824    if (p == 0) return UNKNOWN_ERROR;
825
826    sp<IBinder> binder(IInterface::asBinder(bufferProducer));
827    if (mConnectedWindowBinder == binder) {
828        return OK;
829    }
830
831    sp<ANativeWindow> anw;
832    if (bufferProducer != NULL) {
833        anw = new Surface(bufferProducer, true /* controlledByApp */);
834        status_t err = native_window_api_connect(anw.get(),
835                NATIVE_WINDOW_API_MEDIA);
836
837        if (err != OK) {
838            ALOGE("setVideoSurfaceTexture failed: %d", err);
839            // Note that we must do the reset before disconnecting from the ANW.
840            // Otherwise queue/dequeue calls could be made on the disconnected
841            // ANW, which may result in errors.
842            reset();
843
844            disconnectNativeWindow();
845
846            return err;
847        }
848    }
849
850    // Note that we must set the player's new GraphicBufferProducer before
851    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
852    // on the disconnected ANW, which may result in errors.
853    status_t err = p->setVideoSurfaceTexture(bufferProducer);
854
855    disconnectNativeWindow();
856
857    mConnectedWindow = anw;
858
859    if (err == OK) {
860        mConnectedWindowBinder = binder;
861    } else {
862        disconnectNativeWindow();
863    }
864
865    return err;
866}
867
868status_t MediaPlayerService::Client::invoke(const Parcel& request,
869                                            Parcel *reply)
870{
871    sp<MediaPlayerBase> p = getPlayer();
872    if (p == NULL) return UNKNOWN_ERROR;
873    return p->invoke(request, reply);
874}
875
876// This call doesn't need to access the native player.
877status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
878{
879    status_t status;
880    media::Metadata::Filter allow, drop;
881
882    if (unmarshallFilter(filter, &allow, &status) &&
883        unmarshallFilter(filter, &drop, &status)) {
884        Mutex::Autolock lock(mLock);
885
886        mMetadataAllow = allow;
887        mMetadataDrop = drop;
888    }
889    return status;
890}
891
892status_t MediaPlayerService::Client::getMetadata(
893        bool update_only, bool /*apply_filter*/, Parcel *reply)
894{
895    sp<MediaPlayerBase> player = getPlayer();
896    if (player == 0) return UNKNOWN_ERROR;
897
898    status_t status;
899    // Placeholder for the return code, updated by the caller.
900    reply->writeInt32(-1);
901
902    media::Metadata::Filter ids;
903
904    // We don't block notifications while we fetch the data. We clear
905    // mMetadataUpdated first so we don't lose notifications happening
906    // during the rest of this call.
907    {
908        Mutex::Autolock lock(mLock);
909        if (update_only) {
910            ids = mMetadataUpdated;
911        }
912        mMetadataUpdated.clear();
913    }
914
915    media::Metadata metadata(reply);
916
917    metadata.appendHeader();
918    status = player->getMetadata(ids, reply);
919
920    if (status != OK) {
921        metadata.resetParcel();
922        ALOGE("getMetadata failed %d", status);
923        return status;
924    }
925
926    // FIXME: Implement filtering on the result. Not critical since
927    // filtering takes place on the update notifications already. This
928    // would be when all the metadata are fetch and a filter is set.
929
930    // Everything is fine, update the metadata length.
931    metadata.updateLength();
932    return OK;
933}
934
935status_t MediaPlayerService::Client::prepareAsync()
936{
937    ALOGV("[%d] prepareAsync", mConnId);
938    sp<MediaPlayerBase> p = getPlayer();
939    if (p == 0) return UNKNOWN_ERROR;
940    status_t ret = p->prepareAsync();
941#if CALLBACK_ANTAGONIZER
942    ALOGD("start Antagonizer");
943    if (ret == NO_ERROR) mAntagonizer->start();
944#endif
945    return ret;
946}
947
948status_t MediaPlayerService::Client::start()
949{
950    ALOGV("[%d] start", mConnId);
951    sp<MediaPlayerBase> p = getPlayer();
952    if (p == 0) return UNKNOWN_ERROR;
953    p->setLooping(mLoop);
954    return p->start();
955}
956
957status_t MediaPlayerService::Client::stop()
958{
959    ALOGV("[%d] stop", mConnId);
960    sp<MediaPlayerBase> p = getPlayer();
961    if (p == 0) return UNKNOWN_ERROR;
962    return p->stop();
963}
964
965status_t MediaPlayerService::Client::pause()
966{
967    ALOGV("[%d] pause", mConnId);
968    sp<MediaPlayerBase> p = getPlayer();
969    if (p == 0) return UNKNOWN_ERROR;
970    return p->pause();
971}
972
973status_t MediaPlayerService::Client::isPlaying(bool* state)
974{
975    *state = false;
976    sp<MediaPlayerBase> p = getPlayer();
977    if (p == 0) return UNKNOWN_ERROR;
978    *state = p->isPlaying();
979    ALOGV("[%d] isPlaying: %d", mConnId, *state);
980    return NO_ERROR;
981}
982
983status_t MediaPlayerService::Client::setPlaybackRate(float rate)
984{
985    ALOGV("[%d] setPlaybackRate(%f)", mConnId, rate);
986    sp<MediaPlayerBase> p = getPlayer();
987    if (p == 0) return UNKNOWN_ERROR;
988    return p->setPlaybackRate(rate);
989}
990
991status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
992{
993    ALOGV("getCurrentPosition");
994    sp<MediaPlayerBase> p = getPlayer();
995    if (p == 0) return UNKNOWN_ERROR;
996    status_t ret = p->getCurrentPosition(msec);
997    if (ret == NO_ERROR) {
998        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
999    } else {
1000        ALOGE("getCurrentPosition returned %d", ret);
1001    }
1002    return ret;
1003}
1004
1005status_t MediaPlayerService::Client::getDuration(int *msec)
1006{
1007    ALOGV("getDuration");
1008    sp<MediaPlayerBase> p = getPlayer();
1009    if (p == 0) return UNKNOWN_ERROR;
1010    status_t ret = p->getDuration(msec);
1011    if (ret == NO_ERROR) {
1012        ALOGV("[%d] getDuration = %d", mConnId, *msec);
1013    } else {
1014        ALOGE("getDuration returned %d", ret);
1015    }
1016    return ret;
1017}
1018
1019status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1020    ALOGV("setNextPlayer");
1021    Mutex::Autolock l(mLock);
1022    sp<Client> c = static_cast<Client*>(player.get());
1023    mNextClient = c;
1024
1025    if (c != NULL) {
1026        if (mAudioOutput != NULL) {
1027            mAudioOutput->setNextOutput(c->mAudioOutput);
1028        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1029            ALOGE("no current audio output");
1030        }
1031
1032        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1033            mPlayer->setNextPlayer(mNextClient->getPlayer());
1034        }
1035    }
1036
1037    return OK;
1038}
1039
1040status_t MediaPlayerService::Client::seekTo(int msec)
1041{
1042    ALOGV("[%d] seekTo(%d)", mConnId, msec);
1043    sp<MediaPlayerBase> p = getPlayer();
1044    if (p == 0) return UNKNOWN_ERROR;
1045    return p->seekTo(msec);
1046}
1047
1048status_t MediaPlayerService::Client::reset()
1049{
1050    ALOGV("[%d] reset", mConnId);
1051    mRetransmitEndpointValid = false;
1052    sp<MediaPlayerBase> p = getPlayer();
1053    if (p == 0) return UNKNOWN_ERROR;
1054    return p->reset();
1055}
1056
1057status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1058{
1059    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1060    // TODO: for hardware output, call player instead
1061    Mutex::Autolock l(mLock);
1062    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1063    return NO_ERROR;
1064}
1065
1066status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1067{
1068    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1069    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1070    unmarshallAudioAttributes(parcel, mAudioAttributes);
1071
1072    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1073            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1074            mAudioAttributes->tags);
1075
1076    if (mAudioOutput != 0) {
1077        mAudioOutput->setAudioAttributes(mAudioAttributes);
1078    }
1079    return NO_ERROR;
1080}
1081
1082status_t MediaPlayerService::Client::setLooping(int loop)
1083{
1084    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1085    mLoop = loop;
1086    sp<MediaPlayerBase> p = getPlayer();
1087    if (p != 0) return p->setLooping(loop);
1088    return NO_ERROR;
1089}
1090
1091status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1092{
1093    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1094
1095    // for hardware output, call player instead
1096    sp<MediaPlayerBase> p = getPlayer();
1097    {
1098      Mutex::Autolock l(mLock);
1099      if (p != 0 && p->hardwareOutput()) {
1100          MediaPlayerHWInterface* hwp =
1101                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1102          return hwp->setVolume(leftVolume, rightVolume);
1103      } else {
1104          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1105          return NO_ERROR;
1106      }
1107    }
1108
1109    return NO_ERROR;
1110}
1111
1112status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1113{
1114    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1115    Mutex::Autolock l(mLock);
1116    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1117    return NO_ERROR;
1118}
1119
1120status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1121{
1122    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1123    Mutex::Autolock l(mLock);
1124    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1125    return NO_ERROR;
1126}
1127
1128status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1129    ALOGV("[%d] setParameter(%d)", mConnId, key);
1130    switch (key) {
1131    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1132    {
1133        Mutex::Autolock l(mLock);
1134        return setAudioAttributes_l(request);
1135    }
1136    default:
1137        sp<MediaPlayerBase> p = getPlayer();
1138        if (p == 0) { return UNKNOWN_ERROR; }
1139        return p->setParameter(key, request);
1140    }
1141}
1142
1143status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1144    ALOGV("[%d] getParameter(%d)", mConnId, key);
1145    sp<MediaPlayerBase> p = getPlayer();
1146    if (p == 0) return UNKNOWN_ERROR;
1147    return p->getParameter(key, reply);
1148}
1149
1150status_t MediaPlayerService::Client::setRetransmitEndpoint(
1151        const struct sockaddr_in* endpoint) {
1152
1153    if (NULL != endpoint) {
1154        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1155        uint16_t p = ntohs(endpoint->sin_port);
1156        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1157                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1158    } else {
1159        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1160    }
1161
1162    sp<MediaPlayerBase> p = getPlayer();
1163
1164    // Right now, the only valid time to set a retransmit endpoint is before
1165    // player selection has been made (since the presence or absence of a
1166    // retransmit endpoint is going to determine which player is selected during
1167    // setDataSource).
1168    if (p != 0) return INVALID_OPERATION;
1169
1170    if (NULL != endpoint) {
1171        mRetransmitEndpoint = *endpoint;
1172        mRetransmitEndpointValid = true;
1173    } else {
1174        mRetransmitEndpointValid = false;
1175    }
1176
1177    return NO_ERROR;
1178}
1179
1180status_t MediaPlayerService::Client::getRetransmitEndpoint(
1181        struct sockaddr_in* endpoint)
1182{
1183    if (NULL == endpoint)
1184        return BAD_VALUE;
1185
1186    sp<MediaPlayerBase> p = getPlayer();
1187
1188    if (p != NULL)
1189        return p->getRetransmitEndpoint(endpoint);
1190
1191    if (!mRetransmitEndpointValid)
1192        return NO_INIT;
1193
1194    *endpoint = mRetransmitEndpoint;
1195
1196    return NO_ERROR;
1197}
1198
1199void MediaPlayerService::Client::notify(
1200        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1201{
1202    Client* client = static_cast<Client*>(cookie);
1203    if (client == NULL) {
1204        return;
1205    }
1206
1207    sp<IMediaPlayerClient> c;
1208    {
1209        Mutex::Autolock l(client->mLock);
1210        c = client->mClient;
1211        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1212            if (client->mAudioOutput != NULL)
1213                client->mAudioOutput->switchToNextOutput();
1214            client->mNextClient->start();
1215            client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1216        }
1217    }
1218
1219    if (MEDIA_INFO == msg &&
1220        MEDIA_INFO_METADATA_UPDATE == ext1) {
1221        const media::Metadata::Type metadata_type = ext2;
1222
1223        if(client->shouldDropMetadata(metadata_type)) {
1224            return;
1225        }
1226
1227        // Update the list of metadata that have changed. getMetadata
1228        // also access mMetadataUpdated and clears it.
1229        client->addNewMetadataUpdate(metadata_type);
1230    }
1231
1232    if (c != NULL) {
1233        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1234        c->notify(msg, ext1, ext2, obj);
1235    }
1236}
1237
1238
1239bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1240{
1241    Mutex::Autolock lock(mLock);
1242
1243    if (findMetadata(mMetadataDrop, code)) {
1244        return true;
1245    }
1246
1247    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1248        return false;
1249    } else {
1250        return true;
1251    }
1252}
1253
1254
1255void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1256    Mutex::Autolock lock(mLock);
1257    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1258        mMetadataUpdated.add(metadata_type);
1259    }
1260}
1261
1262#if CALLBACK_ANTAGONIZER
1263const int Antagonizer::interval = 10000; // 10 msecs
1264
1265Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1266    mExit(false), mActive(false), mClient(client), mCb(cb)
1267{
1268    createThread(callbackThread, this);
1269}
1270
1271void Antagonizer::kill()
1272{
1273    Mutex::Autolock _l(mLock);
1274    mActive = false;
1275    mExit = true;
1276    mCondition.wait(mLock);
1277}
1278
1279int Antagonizer::callbackThread(void* user)
1280{
1281    ALOGD("Antagonizer started");
1282    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1283    while (!p->mExit) {
1284        if (p->mActive) {
1285            ALOGV("send event");
1286            p->mCb(p->mClient, 0, 0, 0);
1287        }
1288        usleep(interval);
1289    }
1290    Mutex::Autolock _l(p->mLock);
1291    p->mCondition.signal();
1292    ALOGD("Antagonizer stopped");
1293    return 0;
1294}
1295#endif
1296
1297#undef LOG_TAG
1298#define LOG_TAG "AudioSink"
1299MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid, int pid,
1300        const audio_attributes_t* attr)
1301    : mCallback(NULL),
1302      mCallbackCookie(NULL),
1303      mCallbackData(NULL),
1304      mBytesWritten(0),
1305      mSessionId(sessionId),
1306      mUid(uid),
1307      mPid(pid),
1308      mFlags(AUDIO_OUTPUT_FLAG_NONE) {
1309    ALOGV("AudioOutput(%d)", sessionId);
1310    mStreamType = AUDIO_STREAM_MUSIC;
1311    mLeftVolume = 1.0;
1312    mRightVolume = 1.0;
1313    mPlaybackRatePermille = 1000;
1314    mSampleRateHz = 0;
1315    mMsecsPerFrame = 0;
1316    mAuxEffectId = 0;
1317    mSendLevel = 0.0;
1318    setMinBufferCount();
1319    mAttributes = attr;
1320}
1321
1322MediaPlayerService::AudioOutput::~AudioOutput()
1323{
1324    close();
1325    delete mCallbackData;
1326}
1327
1328void MediaPlayerService::AudioOutput::setMinBufferCount()
1329{
1330    char value[PROPERTY_VALUE_MAX];
1331    if (property_get("ro.kernel.qemu", value, 0)) {
1332        mIsOnEmulator = true;
1333        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1334    }
1335}
1336
1337bool MediaPlayerService::AudioOutput::isOnEmulator()
1338{
1339    setMinBufferCount();
1340    return mIsOnEmulator;
1341}
1342
1343int MediaPlayerService::AudioOutput::getMinBufferCount()
1344{
1345    setMinBufferCount();
1346    return mMinBufferCount;
1347}
1348
1349ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1350{
1351    if (mTrack == 0) return NO_INIT;
1352    return mTrack->frameCount() * frameSize();
1353}
1354
1355ssize_t MediaPlayerService::AudioOutput::frameCount() const
1356{
1357    if (mTrack == 0) return NO_INIT;
1358    return mTrack->frameCount();
1359}
1360
1361ssize_t MediaPlayerService::AudioOutput::channelCount() const
1362{
1363    if (mTrack == 0) return NO_INIT;
1364    return mTrack->channelCount();
1365}
1366
1367ssize_t MediaPlayerService::AudioOutput::frameSize() const
1368{
1369    if (mTrack == 0) return NO_INIT;
1370    return mTrack->frameSize();
1371}
1372
1373uint32_t MediaPlayerService::AudioOutput::latency () const
1374{
1375    if (mTrack == 0) return 0;
1376    return mTrack->latency();
1377}
1378
1379float MediaPlayerService::AudioOutput::msecsPerFrame() const
1380{
1381    return mMsecsPerFrame;
1382}
1383
1384status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1385{
1386    if (mTrack == 0) return NO_INIT;
1387    return mTrack->getPosition(position);
1388}
1389
1390status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1391{
1392    if (mTrack == 0) return NO_INIT;
1393    return mTrack->getTimestamp(ts);
1394}
1395
1396status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1397{
1398    if (mTrack == 0) return NO_INIT;
1399    *frameswritten = mBytesWritten / frameSize();
1400    return OK;
1401}
1402
1403status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1404{
1405    if (mTrack == 0) return NO_INIT;
1406    return mTrack->setParameters(keyValuePairs);
1407}
1408
1409String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1410{
1411    if (mTrack == 0) return String8::empty();
1412    return mTrack->getParameters(keys);
1413}
1414
1415void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1416    mAttributes = attributes;
1417}
1418
1419void MediaPlayerService::AudioOutput::deleteRecycledTrack()
1420{
1421    ALOGV("deleteRecycledTrack");
1422
1423    if (mRecycledTrack != 0) {
1424
1425        if (mCallbackData != NULL) {
1426            mCallbackData->setOutput(NULL);
1427            mCallbackData->endTrackSwitch();
1428        }
1429
1430        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1431            mRecycledTrack->flush();
1432        }
1433        // An offloaded track isn't flushed because the STREAM_END is reported
1434        // slightly prematurely to allow time for the gapless track switch
1435        // but this means that if we decide not to recycle the track there
1436        // could be a small amount of residual data still playing. We leave
1437        // AudioFlinger to drain the track.
1438
1439        mRecycledTrack.clear();
1440        delete mCallbackData;
1441        mCallbackData = NULL;
1442        close();
1443    }
1444}
1445
1446status_t MediaPlayerService::AudioOutput::open(
1447        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1448        audio_format_t format, int bufferCount,
1449        AudioCallback cb, void *cookie,
1450        audio_output_flags_t flags,
1451        const audio_offload_info_t *offloadInfo)
1452{
1453    mCallback = cb;
1454    mCallbackCookie = cookie;
1455
1456    // Check argument "bufferCount" against the mininum buffer count
1457    if (bufferCount < mMinBufferCount) {
1458        ALOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1459        bufferCount = mMinBufferCount;
1460
1461    }
1462    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1463                format, bufferCount, mSessionId, flags);
1464    size_t frameCount;
1465
1466    // offloading is only supported in callback mode for now.
1467    // offloadInfo must be present if offload flag is set
1468    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1469            ((cb == NULL) || (offloadInfo == NULL))) {
1470        return BAD_VALUE;
1471    }
1472
1473    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1474        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1475    } else {
1476        uint32_t afSampleRate;
1477        size_t afFrameCount;
1478
1479        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1480            return NO_INIT;
1481        }
1482        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1483            return NO_INIT;
1484        }
1485
1486        frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1487    }
1488
1489    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1490        channelMask = audio_channel_out_mask_from_count(channelCount);
1491        if (0 == channelMask) {
1492            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1493            return NO_INIT;
1494        }
1495    }
1496
1497    // Check whether we can recycle the track
1498    bool reuse = false;
1499    bool bothOffloaded = false;
1500
1501    if (mRecycledTrack != 0) {
1502        // check whether we are switching between two offloaded tracks
1503        bothOffloaded = (flags & mRecycledTrack->getFlags()
1504                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1505
1506        // check if the existing track can be reused as-is, or if a new track needs to be created.
1507        reuse = true;
1508
1509        if ((mCallbackData == NULL && mCallback != NULL) ||
1510                (mCallbackData != NULL && mCallback == NULL)) {
1511            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1512            ALOGV("can't chain callback and write");
1513            reuse = false;
1514        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1515                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1516            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1517                  mRecycledTrack->getSampleRate(), sampleRate,
1518                  mRecycledTrack->channelCount(), channelCount);
1519            reuse = false;
1520        } else if (flags != mFlags) {
1521            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1522            reuse = false;
1523        } else if (mRecycledTrack->format() != format) {
1524            reuse = false;
1525        }
1526    } else {
1527        ALOGV("no track available to recycle");
1528    }
1529
1530    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1531
1532    // If we can't recycle and both tracks are offloaded
1533    // we must close the previous output before opening a new one
1534    if (bothOffloaded && !reuse) {
1535        ALOGV("both offloaded and not recycling");
1536        deleteRecycledTrack();
1537    }
1538
1539    sp<AudioTrack> t;
1540    CallbackData *newcbd = NULL;
1541
1542    // We don't attempt to create a new track if we are recycling an
1543    // offloaded track. But, if we are recycling a non-offloaded or we
1544    // are switching where one is offloaded and one isn't then we create
1545    // the new track in advance so that we can read additional stream info
1546
1547    if (!(reuse && bothOffloaded)) {
1548        ALOGV("creating new AudioTrack");
1549
1550        if (mCallback != NULL) {
1551            newcbd = new CallbackData(this);
1552            t = new AudioTrack(
1553                    mStreamType,
1554                    sampleRate,
1555                    format,
1556                    channelMask,
1557                    frameCount,
1558                    flags,
1559                    CallbackWrapper,
1560                    newcbd,
1561                    0,  // notification frames
1562                    mSessionId,
1563                    AudioTrack::TRANSFER_CALLBACK,
1564                    offloadInfo,
1565                    mUid,
1566                    mPid,
1567                    mAttributes);
1568        } else {
1569            t = new AudioTrack(
1570                    mStreamType,
1571                    sampleRate,
1572                    format,
1573                    channelMask,
1574                    frameCount,
1575                    flags,
1576                    NULL, // callback
1577                    NULL, // user data
1578                    0, // notification frames
1579                    mSessionId,
1580                    AudioTrack::TRANSFER_DEFAULT,
1581                    NULL, // offload info
1582                    mUid,
1583                    mPid,
1584                    mAttributes);
1585        }
1586
1587        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1588            ALOGE("Unable to create audio track");
1589            delete newcbd;
1590            return NO_INIT;
1591        } else {
1592            // successful AudioTrack initialization implies a legacy stream type was generated
1593            // from the audio attributes
1594            mStreamType = t->streamType();
1595        }
1596    }
1597
1598    if (reuse) {
1599        CHECK(mRecycledTrack != NULL);
1600
1601        if (!bothOffloaded) {
1602            if (mRecycledTrack->frameCount() != t->frameCount()) {
1603                ALOGV("framecount differs: %u/%u frames",
1604                      mRecycledTrack->frameCount(), t->frameCount());
1605                reuse = false;
1606            }
1607        }
1608
1609        if (reuse) {
1610            ALOGV("chaining to next output and recycling track");
1611            close();
1612            mTrack = mRecycledTrack;
1613            mRecycledTrack.clear();
1614            if (mCallbackData != NULL) {
1615                mCallbackData->setOutput(this);
1616            }
1617            delete newcbd;
1618            return OK;
1619        }
1620    }
1621
1622    // we're not going to reuse the track, unblock and flush it
1623    // this was done earlier if both tracks are offloaded
1624    if (!bothOffloaded) {
1625        deleteRecycledTrack();
1626    }
1627
1628    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1629
1630    mCallbackData = newcbd;
1631    ALOGV("setVolume");
1632    t->setVolume(mLeftVolume, mRightVolume);
1633
1634    mSampleRateHz = sampleRate;
1635    mFlags = flags;
1636    mMsecsPerFrame = mPlaybackRatePermille / (float) sampleRate;
1637    uint32_t pos;
1638    if (t->getPosition(&pos) == OK) {
1639        mBytesWritten = uint64_t(pos) * t->frameSize();
1640    }
1641    mTrack = t;
1642
1643    status_t res = NO_ERROR;
1644    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1645        res = t->setSampleRate(mPlaybackRatePermille * mSampleRateHz / 1000);
1646        if (res == NO_ERROR) {
1647            t->setAuxEffectSendLevel(mSendLevel);
1648            res = t->attachAuxEffect(mAuxEffectId);
1649        }
1650    }
1651    ALOGV("open() DONE status %d", res);
1652    return res;
1653}
1654
1655status_t MediaPlayerService::AudioOutput::start()
1656{
1657    ALOGV("start");
1658    if (mCallbackData != NULL) {
1659        mCallbackData->endTrackSwitch();
1660    }
1661    if (mTrack != 0) {
1662        mTrack->setVolume(mLeftVolume, mRightVolume);
1663        mTrack->setAuxEffectSendLevel(mSendLevel);
1664        return mTrack->start();
1665    }
1666    return NO_INIT;
1667}
1668
1669void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1670    mNextOutput = nextOutput;
1671}
1672
1673
1674void MediaPlayerService::AudioOutput::switchToNextOutput() {
1675    ALOGV("switchToNextOutput");
1676    if (mNextOutput != NULL) {
1677        if (mCallbackData != NULL) {
1678            mCallbackData->beginTrackSwitch();
1679        }
1680        delete mNextOutput->mCallbackData;
1681        mNextOutput->mCallbackData = mCallbackData;
1682        mCallbackData = NULL;
1683        mNextOutput->mRecycledTrack = mTrack;
1684        mTrack.clear();
1685        mNextOutput->mSampleRateHz = mSampleRateHz;
1686        mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1687        mNextOutput->mBytesWritten = mBytesWritten;
1688        mNextOutput->mFlags = mFlags;
1689    }
1690}
1691
1692ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size, bool blocking)
1693{
1694    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1695
1696    //ALOGV("write(%p, %u)", buffer, size);
1697    if (mTrack != 0) {
1698        ssize_t ret = mTrack->write(buffer, size, blocking);
1699        if (ret >= 0) {
1700            mBytesWritten += ret;
1701        }
1702        return ret;
1703    }
1704    return NO_INIT;
1705}
1706
1707void MediaPlayerService::AudioOutput::stop()
1708{
1709    ALOGV("stop");
1710    if (mTrack != 0) mTrack->stop();
1711}
1712
1713void MediaPlayerService::AudioOutput::flush()
1714{
1715    ALOGV("flush");
1716    if (mTrack != 0) mTrack->flush();
1717}
1718
1719void MediaPlayerService::AudioOutput::pause()
1720{
1721    ALOGV("pause");
1722    if (mTrack != 0) mTrack->pause();
1723}
1724
1725void MediaPlayerService::AudioOutput::close()
1726{
1727    ALOGV("close");
1728    mTrack.clear();
1729}
1730
1731void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1732{
1733    ALOGV("setVolume(%f, %f)", left, right);
1734    mLeftVolume = left;
1735    mRightVolume = right;
1736    if (mTrack != 0) {
1737        mTrack->setVolume(left, right);
1738    }
1739}
1740
1741status_t MediaPlayerService::AudioOutput::setPlaybackRatePermille(int32_t ratePermille)
1742{
1743    ALOGV("setPlaybackRatePermille(%d)", ratePermille);
1744    status_t res = NO_ERROR;
1745    if (mTrack != 0) {
1746        res = mTrack->setSampleRate(ratePermille * mSampleRateHz / 1000);
1747    } else {
1748        res = NO_INIT;
1749    }
1750    mPlaybackRatePermille = ratePermille;
1751    if (mSampleRateHz != 0) {
1752        mMsecsPerFrame = mPlaybackRatePermille / (float) mSampleRateHz;
1753    }
1754    return res;
1755}
1756
1757status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1758{
1759    ALOGV("setAuxEffectSendLevel(%f)", level);
1760    mSendLevel = level;
1761    if (mTrack != 0) {
1762        return mTrack->setAuxEffectSendLevel(level);
1763    }
1764    return NO_ERROR;
1765}
1766
1767status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1768{
1769    ALOGV("attachAuxEffect(%d)", effectId);
1770    mAuxEffectId = effectId;
1771    if (mTrack != 0) {
1772        return mTrack->attachAuxEffect(effectId);
1773    }
1774    return NO_ERROR;
1775}
1776
1777// static
1778void MediaPlayerService::AudioOutput::CallbackWrapper(
1779        int event, void *cookie, void *info) {
1780    //ALOGV("callbackwrapper");
1781    CallbackData *data = (CallbackData*)cookie;
1782    data->lock();
1783    AudioOutput *me = data->getOutput();
1784    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1785    if (me == NULL) {
1786        // no output set, likely because the track was scheduled to be reused
1787        // by another player, but the format turned out to be incompatible.
1788        data->unlock();
1789        if (buffer != NULL) {
1790            buffer->size = 0;
1791        }
1792        return;
1793    }
1794
1795    switch(event) {
1796    case AudioTrack::EVENT_MORE_DATA: {
1797        size_t actualSize = (*me->mCallback)(
1798                me, buffer->raw, buffer->size, me->mCallbackCookie,
1799                CB_EVENT_FILL_BUFFER);
1800
1801        if ((me->mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0 &&
1802            actualSize == 0 && buffer->size > 0 && me->mNextOutput == NULL) {
1803            // We've reached EOS but the audio track is not stopped yet,
1804            // keep playing silence.
1805
1806            memset(buffer->raw, 0, buffer->size);
1807            actualSize = buffer->size;
1808        }
1809
1810        buffer->size = actualSize;
1811        } break;
1812
1813
1814    case AudioTrack::EVENT_STREAM_END:
1815        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
1816        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
1817                me->mCallbackCookie, CB_EVENT_STREAM_END);
1818        break;
1819
1820    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
1821        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
1822        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
1823                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
1824        break;
1825
1826    default:
1827        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
1828    }
1829
1830    data->unlock();
1831}
1832
1833int MediaPlayerService::AudioOutput::getSessionId() const
1834{
1835    return mSessionId;
1836}
1837
1838uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
1839{
1840    if (mTrack == 0) return 0;
1841    return mTrack->getSampleRate();
1842}
1843
1844////////////////////////////////////////////////////////////////////////////////
1845
1846struct CallbackThread : public Thread {
1847    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1848                   MediaPlayerBase::AudioSink::AudioCallback cb,
1849                   void *cookie);
1850
1851protected:
1852    virtual ~CallbackThread();
1853
1854    virtual bool threadLoop();
1855
1856private:
1857    wp<MediaPlayerBase::AudioSink> mSink;
1858    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1859    void *mCookie;
1860    void *mBuffer;
1861    size_t mBufferSize;
1862
1863    CallbackThread(const CallbackThread &);
1864    CallbackThread &operator=(const CallbackThread &);
1865};
1866
1867CallbackThread::CallbackThread(
1868        const wp<MediaPlayerBase::AudioSink> &sink,
1869        MediaPlayerBase::AudioSink::AudioCallback cb,
1870        void *cookie)
1871    : mSink(sink),
1872      mCallback(cb),
1873      mCookie(cookie),
1874      mBuffer(NULL),
1875      mBufferSize(0) {
1876}
1877
1878CallbackThread::~CallbackThread() {
1879    if (mBuffer) {
1880        free(mBuffer);
1881        mBuffer = NULL;
1882    }
1883}
1884
1885bool CallbackThread::threadLoop() {
1886    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1887    if (sink == NULL) {
1888        return false;
1889    }
1890
1891    if (mBuffer == NULL) {
1892        mBufferSize = sink->bufferSize();
1893        mBuffer = malloc(mBufferSize);
1894    }
1895
1896    size_t actualSize =
1897        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
1898                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
1899
1900    if (actualSize > 0) {
1901        sink->write(mBuffer, actualSize);
1902        // Could return false on sink->write() error or short count.
1903        // Not necessarily appropriate but would work for AudioCache behavior.
1904    }
1905
1906    return true;
1907}
1908
1909////////////////////////////////////////////////////////////////////////////////
1910
1911void MediaPlayerService::addBatteryData(uint32_t params)
1912{
1913    Mutex::Autolock lock(mLock);
1914
1915    int32_t time = systemTime() / 1000000L;
1916
1917    // change audio output devices. This notification comes from AudioFlinger
1918    if ((params & kBatteryDataSpeakerOn)
1919            || (params & kBatteryDataOtherAudioDeviceOn)) {
1920
1921        int deviceOn[NUM_AUDIO_DEVICES];
1922        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1923            deviceOn[i] = 0;
1924        }
1925
1926        if ((params & kBatteryDataSpeakerOn)
1927                && (params & kBatteryDataOtherAudioDeviceOn)) {
1928            deviceOn[SPEAKER_AND_OTHER] = 1;
1929        } else if (params & kBatteryDataSpeakerOn) {
1930            deviceOn[SPEAKER] = 1;
1931        } else {
1932            deviceOn[OTHER_AUDIO_DEVICE] = 1;
1933        }
1934
1935        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1936            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
1937
1938                if (mBatteryAudio.refCount > 0) { // if playing audio
1939                    if (!deviceOn[i]) {
1940                        mBatteryAudio.lastTime[i] += time;
1941                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1942                        mBatteryAudio.lastTime[i] = 0;
1943                    } else {
1944                        mBatteryAudio.lastTime[i] = 0 - time;
1945                    }
1946                }
1947
1948                mBatteryAudio.deviceOn[i] = deviceOn[i];
1949            }
1950        }
1951        return;
1952    }
1953
1954    // an audio stream is started
1955    if (params & kBatteryDataAudioFlingerStart) {
1956        // record the start time only if currently no other audio
1957        // is being played
1958        if (mBatteryAudio.refCount == 0) {
1959            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1960                if (mBatteryAudio.deviceOn[i]) {
1961                    mBatteryAudio.lastTime[i] -= time;
1962                }
1963            }
1964        }
1965
1966        mBatteryAudio.refCount ++;
1967        return;
1968
1969    } else if (params & kBatteryDataAudioFlingerStop) {
1970        if (mBatteryAudio.refCount <= 0) {
1971            ALOGW("Battery track warning: refCount is <= 0");
1972            return;
1973        }
1974
1975        // record the stop time only if currently this is the only
1976        // audio being played
1977        if (mBatteryAudio.refCount == 1) {
1978            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1979                if (mBatteryAudio.deviceOn[i]) {
1980                    mBatteryAudio.lastTime[i] += time;
1981                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1982                    mBatteryAudio.lastTime[i] = 0;
1983                }
1984            }
1985        }
1986
1987        mBatteryAudio.refCount --;
1988        return;
1989    }
1990
1991    int uid = IPCThreadState::self()->getCallingUid();
1992    if (uid == AID_MEDIA) {
1993        return;
1994    }
1995    int index = mBatteryData.indexOfKey(uid);
1996
1997    if (index < 0) { // create a new entry for this UID
1998        BatteryUsageInfo info;
1999        info.audioTotalTime = 0;
2000        info.videoTotalTime = 0;
2001        info.audioLastTime = 0;
2002        info.videoLastTime = 0;
2003        info.refCount = 0;
2004
2005        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2006            ALOGE("Battery track error: no memory for new app");
2007            return;
2008        }
2009    }
2010
2011    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2012
2013    if (params & kBatteryDataCodecStarted) {
2014        if (params & kBatteryDataTrackAudio) {
2015            info.audioLastTime -= time;
2016            info.refCount ++;
2017        }
2018        if (params & kBatteryDataTrackVideo) {
2019            info.videoLastTime -= time;
2020            info.refCount ++;
2021        }
2022    } else {
2023        if (info.refCount == 0) {
2024            ALOGW("Battery track warning: refCount is already 0");
2025            return;
2026        } else if (info.refCount < 0) {
2027            ALOGE("Battery track error: refCount < 0");
2028            mBatteryData.removeItem(uid);
2029            return;
2030        }
2031
2032        if (params & kBatteryDataTrackAudio) {
2033            info.audioLastTime += time;
2034            info.refCount --;
2035        }
2036        if (params & kBatteryDataTrackVideo) {
2037            info.videoLastTime += time;
2038            info.refCount --;
2039        }
2040
2041        // no stream is being played by this UID
2042        if (info.refCount == 0) {
2043            info.audioTotalTime += info.audioLastTime;
2044            info.audioLastTime = 0;
2045            info.videoTotalTime += info.videoLastTime;
2046            info.videoLastTime = 0;
2047        }
2048    }
2049}
2050
2051status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2052    Mutex::Autolock lock(mLock);
2053
2054    // audio output devices usage
2055    int32_t time = systemTime() / 1000000L; //in ms
2056    int32_t totalTime;
2057
2058    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2059        totalTime = mBatteryAudio.totalTime[i];
2060
2061        if (mBatteryAudio.deviceOn[i]
2062            && (mBatteryAudio.lastTime[i] != 0)) {
2063                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2064                totalTime += tmpTime;
2065        }
2066
2067        reply->writeInt32(totalTime);
2068        // reset the total time
2069        mBatteryAudio.totalTime[i] = 0;
2070   }
2071
2072    // codec usage
2073    BatteryUsageInfo info;
2074    int size = mBatteryData.size();
2075
2076    reply->writeInt32(size);
2077    int i = 0;
2078
2079    while (i < size) {
2080        info = mBatteryData.valueAt(i);
2081
2082        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2083        reply->writeInt32(info.audioTotalTime);
2084        reply->writeInt32(info.videoTotalTime);
2085
2086        info.audioTotalTime = 0;
2087        info.videoTotalTime = 0;
2088
2089        // remove the UID entry where no stream is being played
2090        if (info.refCount <= 0) {
2091            mBatteryData.removeItemsAt(i);
2092            size --;
2093            i --;
2094        }
2095        i++;
2096    }
2097    return NO_ERROR;
2098}
2099} // namespace android
2100