MediaPlayerService.cpp revision 36a4d2cc7a44eb42d0d9ef5fe50b6747a7a34cab 
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 <android_runtime/ActivityManager.h>
38
39#include <binder/IPCThreadState.h>
40#include <binder/IServiceManager.h>
41#include <binder/MemoryHeapBase.h>
42#include <binder/MemoryBase.h>
43#include <gui/SurfaceTextureClient.h>
44#include <utils/Errors.h>  // for status_t
45#include <utils/String8.h>
46#include <utils/SystemClock.h>
47#include <utils/Vector.h>
48#include <cutils/properties.h>
49
50#include <media/MediaPlayerInterface.h>
51#include <media/mediarecorder.h>
52#include <media/MediaMetadataRetrieverInterface.h>
53#include <media/Metadata.h>
54#include <media/AudioTrack.h>
55#include <media/MemoryLeakTrackUtil.h>
56#include <media/stagefright/MediaErrors.h>
57
58#include <system/audio.h>
59
60#include <private/android_filesystem_config.h>
61
62#include "MediaRecorderClient.h"
63#include "MediaPlayerService.h"
64#include "MetadataRetrieverClient.h"
65
66#include "MidiFile.h"
67#include "TestPlayerStub.h"
68#include "StagefrightPlayer.h"
69#include "nuplayer/NuPlayerDriver.h"
70
71#include <OMX.h>
72
73namespace android {
74sp<MediaPlayerBase> createAAH_TXPlayer();
75sp<MediaPlayerBase> createAAH_RXPlayer();
76}
77
78namespace {
79using android::media::Metadata;
80using android::status_t;
81using android::OK;
82using android::BAD_VALUE;
83using android::NOT_ENOUGH_DATA;
84using android::Parcel;
85
86// Max number of entries in the filter.
87const int kMaxFilterSize = 64;  // I pulled that out of thin air.
88
89// FIXME: Move all the metadata related function in the Metadata.cpp
90
91
92// Unmarshall a filter from a Parcel.
93// Filter format in a parcel:
94//
95//  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
96// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
97// |                       number of entries (n)                   |
98// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
99// |                       metadata type 1                         |
100// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
101// |                       metadata type 2                         |
102// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
103//  ....
104// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
105// |                       metadata type n                         |
106// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
107//
108// @param p Parcel that should start with a filter.
109// @param[out] filter On exit contains the list of metadata type to be
110//                    filtered.
111// @param[out] status On exit contains the status code to be returned.
112// @return true if the parcel starts with a valid filter.
113bool unmarshallFilter(const Parcel& p,
114                      Metadata::Filter *filter,
115                      status_t *status)
116{
117    int32_t val;
118    if (p.readInt32(&val) != OK)
119    {
120        ALOGE("Failed to read filter's length");
121        *status = NOT_ENOUGH_DATA;
122        return false;
123    }
124
125    if( val > kMaxFilterSize || val < 0)
126    {
127        ALOGE("Invalid filter len %d", val);
128        *status = BAD_VALUE;
129        return false;
130    }
131
132    const size_t num = val;
133
134    filter->clear();
135    filter->setCapacity(num);
136
137    size_t size = num * sizeof(Metadata::Type);
138
139
140    if (p.dataAvail() < size)
141    {
142        ALOGE("Filter too short expected %d but got %d", size, p.dataAvail());
143        *status = NOT_ENOUGH_DATA;
144        return false;
145    }
146
147    const Metadata::Type *data =
148            static_cast<const Metadata::Type*>(p.readInplace(size));
149
150    if (NULL == data)
151    {
152        ALOGE("Filter had no data");
153        *status = BAD_VALUE;
154        return false;
155    }
156
157    // TODO: The stl impl of vector would be more efficient here
158    // because it degenerates into a memcpy on pod types. Try to
159    // replace later or use stl::set.
160    for (size_t i = 0; i < num; ++i)
161    {
162        filter->add(*data);
163        ++data;
164    }
165    *status = OK;
166    return true;
167}
168
169// @param filter Of metadata type.
170// @param val To be searched.
171// @return true if a match was found.
172bool findMetadata(const Metadata::Filter& filter, const int32_t val)
173{
174    // Deal with empty and ANY right away
175    if (filter.isEmpty()) return false;
176    if (filter[0] == Metadata::kAny) return true;
177
178    return filter.indexOf(val) >= 0;
179}
180
181}  // anonymous namespace
182
183
184namespace android {
185
186static bool checkPermission(const char* permissionString) {
187#ifndef HAVE_ANDROID_OS
188    return true;
189#endif
190    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
191    bool ok = checkCallingPermission(String16(permissionString));
192    if (!ok) ALOGE("Request requires %s", permissionString);
193    return ok;
194}
195
196// TODO: Temp hack until we can register players
197typedef struct {
198    const char *extension;
199    const player_type playertype;
200} extmap;
201extmap FILE_EXTS [] =  {
202        {".mid", SONIVOX_PLAYER},
203        {".midi", SONIVOX_PLAYER},
204        {".smf", SONIVOX_PLAYER},
205        {".xmf", SONIVOX_PLAYER},
206        {".imy", SONIVOX_PLAYER},
207        {".rtttl", SONIVOX_PLAYER},
208        {".rtx", SONIVOX_PLAYER},
209        {".ota", SONIVOX_PLAYER},
210};
211
212// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
213/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
214/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
215
216void MediaPlayerService::instantiate() {
217    defaultServiceManager()->addService(
218            String16("media.player"), new MediaPlayerService());
219}
220
221MediaPlayerService::MediaPlayerService()
222{
223    ALOGV("MediaPlayerService created");
224    mNextConnId = 1;
225
226    mBatteryAudio.refCount = 0;
227    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
228        mBatteryAudio.deviceOn[i] = 0;
229        mBatteryAudio.lastTime[i] = 0;
230        mBatteryAudio.totalTime[i] = 0;
231    }
232    // speaker is on by default
233    mBatteryAudio.deviceOn[SPEAKER] = 1;
234}
235
236MediaPlayerService::~MediaPlayerService()
237{
238    ALOGV("MediaPlayerService destroyed");
239}
240
241sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(pid_t pid)
242{
243    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
244    wp<MediaRecorderClient> w = recorder;
245    Mutex::Autolock lock(mLock);
246    mMediaRecorderClients.add(w);
247    ALOGV("Create new media recorder client from pid %d", pid);
248    return recorder;
249}
250
251void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
252{
253    Mutex::Autolock lock(mLock);
254    mMediaRecorderClients.remove(client);
255    ALOGV("Delete media recorder client");
256}
257
258sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever(pid_t pid)
259{
260    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
261    ALOGV("Create new media retriever from pid %d", pid);
262    return retriever;
263}
264
265sp<IMediaPlayer> MediaPlayerService::create(pid_t pid, const sp<IMediaPlayerClient>& client,
266        int audioSessionId)
267{
268    int32_t connId = android_atomic_inc(&mNextConnId);
269
270    sp<Client> c = new Client(
271            this, pid, connId, client, audioSessionId,
272            IPCThreadState::self()->getCallingUid());
273
274    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
275         IPCThreadState::self()->getCallingUid());
276
277    wp<Client> w = c;
278    {
279        Mutex::Autolock lock(mLock);
280        mClients.add(w);
281    }
282    return c;
283}
284
285sp<IOMX> MediaPlayerService::getOMX() {
286    Mutex::Autolock autoLock(mLock);
287
288    if (mOMX.get() == NULL) {
289        mOMX = new OMX;
290    }
291
292    return mOMX;
293}
294
295status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
296{
297    const size_t SIZE = 256;
298    char buffer[SIZE];
299    String8 result;
300
301    result.append(" AudioCache\n");
302    if (mHeap != 0) {
303        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d), device(%s)\n",
304                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags(), mHeap->getDevice());
305        result.append(buffer);
306    }
307    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%ld)\n",
308            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
309    result.append(buffer);
310    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
311            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
312    result.append(buffer);
313    ::write(fd, result.string(), result.size());
314    return NO_ERROR;
315}
316
317status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
318{
319    const size_t SIZE = 256;
320    char buffer[SIZE];
321    String8 result;
322
323    result.append(" AudioOutput\n");
324    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
325            mStreamType, mLeftVolume, mRightVolume);
326    result.append(buffer);
327    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
328            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
329    result.append(buffer);
330    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
331            mAuxEffectId, mSendLevel);
332    result.append(buffer);
333
334    ::write(fd, result.string(), result.size());
335    if (mTrack != 0) {
336        mTrack->dump(fd, args);
337    }
338    return NO_ERROR;
339}
340
341status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
342{
343    const size_t SIZE = 256;
344    char buffer[SIZE];
345    String8 result;
346    result.append(" Client\n");
347    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
348            mPid, mConnId, mStatus, mLoop?"true": "false");
349    result.append(buffer);
350    write(fd, result.string(), result.size());
351    if (mPlayer != NULL) {
352        mPlayer->dump(fd, args);
353    }
354    if (mAudioOutput != 0) {
355        mAudioOutput->dump(fd, args);
356    }
357    write(fd, "\n", 1);
358    return NO_ERROR;
359}
360
361status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
362{
363    const size_t SIZE = 256;
364    char buffer[SIZE];
365    String8 result;
366    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
367        snprintf(buffer, SIZE, "Permission Denial: "
368                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
369                IPCThreadState::self()->getCallingPid(),
370                IPCThreadState::self()->getCallingUid());
371        result.append(buffer);
372    } else {
373        Mutex::Autolock lock(mLock);
374        for (int i = 0, n = mClients.size(); i < n; ++i) {
375            sp<Client> c = mClients[i].promote();
376            if (c != 0) c->dump(fd, args);
377        }
378        if (mMediaRecorderClients.size() == 0) {
379                result.append(" No media recorder client\n\n");
380        } else {
381            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
382                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
383                if (c != 0) {
384                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
385                    result.append(buffer);
386                    write(fd, result.string(), result.size());
387                    result = "\n";
388                    c->dump(fd, args);
389                }
390            }
391        }
392
393        result.append(" Files opened and/or mapped:\n");
394        snprintf(buffer, SIZE, "/proc/%d/maps", gettid());
395        FILE *f = fopen(buffer, "r");
396        if (f) {
397            while (!feof(f)) {
398                fgets(buffer, SIZE, f);
399                if (strstr(buffer, " /mnt/sdcard/") ||
400                    strstr(buffer, " /system/sounds/") ||
401                    strstr(buffer, " /data/") ||
402                    strstr(buffer, " /system/media/")) {
403                    result.append("  ");
404                    result.append(buffer);
405                }
406            }
407            fclose(f);
408        } else {
409            result.append("couldn't open ");
410            result.append(buffer);
411            result.append("\n");
412        }
413
414        snprintf(buffer, SIZE, "/proc/%d/fd", gettid());
415        DIR *d = opendir(buffer);
416        if (d) {
417            struct dirent *ent;
418            while((ent = readdir(d)) != NULL) {
419                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
420                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", gettid(), ent->d_name);
421                    struct stat s;
422                    if (lstat(buffer, &s) == 0) {
423                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
424                            char linkto[256];
425                            int len = readlink(buffer, linkto, sizeof(linkto));
426                            if(len > 0) {
427                                if(len > 255) {
428                                    linkto[252] = '.';
429                                    linkto[253] = '.';
430                                    linkto[254] = '.';
431                                    linkto[255] = 0;
432                                } else {
433                                    linkto[len] = 0;
434                                }
435                                if (strstr(linkto, "/mnt/sdcard/") == linkto ||
436                                    strstr(linkto, "/system/sounds/") == linkto ||
437                                    strstr(linkto, "/data/") == linkto ||
438                                    strstr(linkto, "/system/media/") == linkto) {
439                                    result.append("  ");
440                                    result.append(buffer);
441                                    result.append(" -> ");
442                                    result.append(linkto);
443                                    result.append("\n");
444                                }
445                            }
446                        } else {
447                            result.append("  unexpected type for ");
448                            result.append(buffer);
449                            result.append("\n");
450                        }
451                    }
452                }
453            }
454            closedir(d);
455        } else {
456            result.append("couldn't open ");
457            result.append(buffer);
458            result.append("\n");
459        }
460
461        bool dumpMem = false;
462        for (size_t i = 0; i < args.size(); i++) {
463            if (args[i] == String16("-m")) {
464                dumpMem = true;
465            }
466        }
467        if (dumpMem) {
468            dumpMemoryAddresses(fd);
469        }
470    }
471    write(fd, result.string(), result.size());
472    return NO_ERROR;
473}
474
475void MediaPlayerService::removeClient(wp<Client> client)
476{
477    Mutex::Autolock lock(mLock);
478    mClients.remove(client);
479}
480
481MediaPlayerService::Client::Client(
482        const sp<MediaPlayerService>& service, pid_t pid,
483        int32_t connId, const sp<IMediaPlayerClient>& client,
484        int audioSessionId, uid_t uid)
485{
486    ALOGV("Client(%d) constructor", connId);
487    mPid = pid;
488    mConnId = connId;
489    mService = service;
490    mClient = client;
491    mLoop = false;
492    mStatus = NO_INIT;
493    mAudioSessionId = audioSessionId;
494    mUID = uid;
495    mRetransmitEndpointValid = false;
496
497#if CALLBACK_ANTAGONIZER
498    ALOGD("create Antagonizer");
499    mAntagonizer = new Antagonizer(notify, this);
500#endif
501}
502
503MediaPlayerService::Client::~Client()
504{
505    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
506    mAudioOutput.clear();
507    wp<Client> client(this);
508    disconnect();
509    mService->removeClient(client);
510}
511
512void MediaPlayerService::Client::disconnect()
513{
514    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
515    // grab local reference and clear main reference to prevent future
516    // access to object
517    sp<MediaPlayerBase> p;
518    {
519        Mutex::Autolock l(mLock);
520        p = mPlayer;
521    }
522    mClient.clear();
523
524    mPlayer.clear();
525
526    // clear the notification to prevent callbacks to dead client
527    // and reset the player. We assume the player will serialize
528    // access to itself if necessary.
529    if (p != 0) {
530        p->setNotifyCallback(0, 0);
531#if CALLBACK_ANTAGONIZER
532        ALOGD("kill Antagonizer");
533        mAntagonizer->kill();
534#endif
535        p->reset();
536    }
537
538    disconnectNativeWindow();
539
540    IPCThreadState::self()->flushCommands();
541}
542
543static player_type getDefaultPlayerType() {
544    return STAGEFRIGHT_PLAYER;
545}
546
547player_type getPlayerType(int fd, int64_t offset, int64_t length)
548{
549    char buf[20];
550    lseek(fd, offset, SEEK_SET);
551    read(fd, buf, sizeof(buf));
552    lseek(fd, offset, SEEK_SET);
553
554    long ident = *((long*)buf);
555
556    // Ogg vorbis?
557    if (ident == 0x5367674f) // 'OggS'
558        return STAGEFRIGHT_PLAYER;
559
560    // Some kind of MIDI?
561    EAS_DATA_HANDLE easdata;
562    if (EAS_Init(&easdata) == EAS_SUCCESS) {
563        EAS_FILE locator;
564        locator.path = NULL;
565        locator.fd = fd;
566        locator.offset = offset;
567        locator.length = length;
568        EAS_HANDLE  eashandle;
569        if (EAS_OpenFile(easdata, &locator, &eashandle) == EAS_SUCCESS) {
570            EAS_CloseFile(easdata, eashandle);
571            EAS_Shutdown(easdata);
572            return SONIVOX_PLAYER;
573        }
574        EAS_Shutdown(easdata);
575    }
576
577    return getDefaultPlayerType();
578}
579
580player_type getPlayerType(const char* url)
581{
582    if (TestPlayerStub::canBeUsed(url)) {
583        return TEST_PLAYER;
584    }
585
586    if (!strncasecmp("http://", url, 7)
587            || !strncasecmp("https://", url, 8)) {
588        size_t len = strlen(url);
589        if (len >= 5 && !strcasecmp(".m3u8", &url[len - 5])) {
590            return NU_PLAYER;
591        }
592
593        if (strstr(url,"m3u8")) {
594            return NU_PLAYER;
595        }
596    }
597
598    if (!strncasecmp("rtsp://", url, 7)) {
599        return NU_PLAYER;
600    }
601
602    if (!strncasecmp("aahRX://", url, 8)) {
603        return AAH_RX_PLAYER;
604    }
605
606    // use MidiFile for MIDI extensions
607    int lenURL = strlen(url);
608    for (int i = 0; i < NELEM(FILE_EXTS); ++i) {
609        int len = strlen(FILE_EXTS[i].extension);
610        int start = lenURL - len;
611        if (start > 0) {
612            if (!strncasecmp(url + start, FILE_EXTS[i].extension, len)) {
613                return FILE_EXTS[i].playertype;
614            }
615        }
616    }
617
618    return getDefaultPlayerType();
619}
620
621player_type MediaPlayerService::Client::getPlayerType(int fd,
622                                                      int64_t offset,
623                                                      int64_t length)
624{
625    // Until re-transmit functionality is added to the existing core android
626    // players, we use the special AAH TX player whenever we were configured
627    // for retransmission.
628    if (mRetransmitEndpointValid) {
629        return AAH_TX_PLAYER;
630    }
631
632    return android::getPlayerType(fd, offset, length);
633}
634
635player_type MediaPlayerService::Client::getPlayerType(const char* url)
636{
637    // Until re-transmit functionality is added to the existing core android
638    // players, we use the special AAH TX player whenever we were configured
639    // for retransmission.
640    if (mRetransmitEndpointValid) {
641        return AAH_TX_PLAYER;
642    }
643
644    return android::getPlayerType(url);
645}
646
647player_type MediaPlayerService::Client::getPlayerType(
648        const sp<IStreamSource> &source) {
649    // Until re-transmit functionality is added to the existing core android
650    // players, we use the special AAH TX player whenever we were configured
651    // for retransmission.
652    if (mRetransmitEndpointValid) {
653        return AAH_TX_PLAYER;
654    }
655
656    return NU_PLAYER;
657}
658
659static sp<MediaPlayerBase> createPlayer(player_type playerType, void* cookie,
660        notify_callback_f notifyFunc)
661{
662    sp<MediaPlayerBase> p;
663    switch (playerType) {
664        case SONIVOX_PLAYER:
665            ALOGV(" create MidiFile");
666            p = new MidiFile();
667            break;
668        case STAGEFRIGHT_PLAYER:
669            ALOGV(" create StagefrightPlayer");
670            p = new StagefrightPlayer;
671            break;
672        case NU_PLAYER:
673            ALOGV(" create NuPlayer");
674            p = new NuPlayerDriver;
675            break;
676        case TEST_PLAYER:
677            ALOGV("Create Test Player stub");
678            p = new TestPlayerStub();
679            break;
680        case AAH_RX_PLAYER:
681            ALOGV(" create A@H RX Player");
682            p = createAAH_RXPlayer();
683            break;
684        case AAH_TX_PLAYER:
685            ALOGV(" create A@H TX Player");
686            p = createAAH_TXPlayer();
687            break;
688        default:
689            ALOGE("Unknown player type: %d", playerType);
690            return NULL;
691    }
692    if (p != NULL) {
693        if (p->initCheck() == NO_ERROR) {
694            p->setNotifyCallback(cookie, notifyFunc);
695        } else {
696            p.clear();
697        }
698    }
699    if (p == NULL) {
700        ALOGE("Failed to create player object");
701    }
702    return p;
703}
704
705sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
706{
707    // determine if we have the right player type
708    sp<MediaPlayerBase> p = mPlayer;
709    if ((p != NULL) && (p->playerType() != playerType)) {
710        ALOGV("delete player");
711        p.clear();
712    }
713    if (p == NULL) {
714        p = android::createPlayer(playerType, this, notify);
715    }
716
717    if (p != NULL) {
718        p->setUID(mUID);
719    }
720
721    return p;
722}
723
724sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
725        player_type playerType)
726{
727    ALOGV("player type = %d", playerType);
728
729    // create the right type of player
730    sp<MediaPlayerBase> p = createPlayer(playerType);
731    if (p == NULL) {
732        return p;
733    }
734
735    if (!p->hardwareOutput()) {
736        mAudioOutput = new AudioOutput(mAudioSessionId);
737        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
738    }
739
740    return p;
741}
742
743void MediaPlayerService::Client::setDataSource_post(
744        const sp<MediaPlayerBase>& p,
745        status_t status)
746{
747    ALOGV(" setDataSource");
748    mStatus = status;
749    if (mStatus != OK) {
750        ALOGE("  error: %d", mStatus);
751        return;
752    }
753
754    // Set the re-transmission endpoint if one was chosen.
755    if (mRetransmitEndpointValid) {
756        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
757        if (mStatus != NO_ERROR) {
758            ALOGE("setRetransmitEndpoint error: %d", mStatus);
759        }
760    }
761
762    if (mStatus == OK) {
763        mPlayer = p;
764    }
765}
766
767status_t MediaPlayerService::Client::setDataSource(
768        const char *url, const KeyedVector<String8, String8> *headers)
769{
770    ALOGV("setDataSource(%s)", url);
771    if (url == NULL)
772        return UNKNOWN_ERROR;
773
774    if ((strncmp(url, "http://", 7) == 0) ||
775        (strncmp(url, "https://", 8) == 0) ||
776        (strncmp(url, "rtsp://", 7) == 0)) {
777        if (!checkPermission("android.permission.INTERNET")) {
778            return PERMISSION_DENIED;
779        }
780    }
781
782    if (strncmp(url, "content://", 10) == 0) {
783        // get a filedescriptor for the content Uri and
784        // pass it to the setDataSource(fd) method
785
786        String16 url16(url);
787        int fd = android::openContentProviderFile(url16);
788        if (fd < 0)
789        {
790            ALOGE("Couldn't open fd for %s", url);
791            return UNKNOWN_ERROR;
792        }
793        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
794        close(fd);
795        return mStatus;
796    } else {
797        player_type playerType = getPlayerType(url);
798        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
799        if (p == NULL) {
800            return NO_INIT;
801        }
802
803        setDataSource_post(p, p->setDataSource(url, headers));
804        return mStatus;
805    }
806}
807
808status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
809{
810    ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
811    struct stat sb;
812    int ret = fstat(fd, &sb);
813    if (ret != 0) {
814        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
815        return UNKNOWN_ERROR;
816    }
817
818    ALOGV("st_dev  = %llu", sb.st_dev);
819    ALOGV("st_mode = %u", sb.st_mode);
820    ALOGV("st_uid  = %lu", sb.st_uid);
821    ALOGV("st_gid  = %lu", sb.st_gid);
822    ALOGV("st_size = %llu", sb.st_size);
823
824    if (offset >= sb.st_size) {
825        ALOGE("offset error");
826        ::close(fd);
827        return UNKNOWN_ERROR;
828    }
829    if (offset + length > sb.st_size) {
830        length = sb.st_size - offset;
831        ALOGV("calculated length = %lld", length);
832    }
833
834    // Until re-transmit functionality is added to the existing core android
835    // players, we use the special AAH TX player whenever we were configured for
836    // retransmission.
837    player_type playerType = getPlayerType(fd, offset, length);
838    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
839    if (p == NULL) {
840        return NO_INIT;
841    }
842
843    // now set data source
844    setDataSource_post(p, p->setDataSource(fd, offset, length));
845    return mStatus;
846}
847
848status_t MediaPlayerService::Client::setDataSource(
849        const sp<IStreamSource> &source) {
850    // create the right type of player
851    // Until re-transmit functionality is added to the existing core android
852    // players, we use the special AAH TX player whenever we were configured for
853    // retransmission.
854    player_type playerType = getPlayerType(source);
855    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
856    if (p == NULL) {
857        return NO_INIT;
858    }
859
860    // now set data source
861    setDataSource_post(p, p->setDataSource(source));
862    return mStatus;
863}
864
865void MediaPlayerService::Client::disconnectNativeWindow() {
866    if (mConnectedWindow != NULL) {
867        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
868                NATIVE_WINDOW_API_MEDIA);
869
870        if (err != OK) {
871            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
872                    strerror(-err), err);
873        }
874    }
875    mConnectedWindow.clear();
876}
877
878status_t MediaPlayerService::Client::setVideoSurfaceTexture(
879        const sp<ISurfaceTexture>& surfaceTexture)
880{
881    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, surfaceTexture.get());
882    sp<MediaPlayerBase> p = getPlayer();
883    if (p == 0) return UNKNOWN_ERROR;
884
885    sp<IBinder> binder(surfaceTexture == NULL ? NULL :
886            surfaceTexture->asBinder());
887    if (mConnectedWindowBinder == binder) {
888        return OK;
889    }
890
891    sp<ANativeWindow> anw;
892    if (surfaceTexture != NULL) {
893        anw = new SurfaceTextureClient(surfaceTexture);
894        status_t err = native_window_api_connect(anw.get(),
895                NATIVE_WINDOW_API_MEDIA);
896
897        if (err != OK) {
898            ALOGE("setVideoSurfaceTexture failed: %d", err);
899            // Note that we must do the reset before disconnecting from the ANW.
900            // Otherwise queue/dequeue calls could be made on the disconnected
901            // ANW, which may result in errors.
902            reset();
903
904            disconnectNativeWindow();
905
906            return err;
907        }
908    }
909
910    // Note that we must set the player's new SurfaceTexture before
911    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
912    // on the disconnected ANW, which may result in errors.
913    status_t err = p->setVideoSurfaceTexture(surfaceTexture);
914
915    disconnectNativeWindow();
916
917    mConnectedWindow = anw;
918
919    if (err == OK) {
920        mConnectedWindowBinder = binder;
921    } else {
922        disconnectNativeWindow();
923    }
924
925    return err;
926}
927
928status_t MediaPlayerService::Client::invoke(const Parcel& request,
929                                            Parcel *reply)
930{
931    sp<MediaPlayerBase> p = getPlayer();
932    if (p == NULL) return UNKNOWN_ERROR;
933    return p->invoke(request, reply);
934}
935
936// This call doesn't need to access the native player.
937status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
938{
939    status_t status;
940    media::Metadata::Filter allow, drop;
941
942    if (unmarshallFilter(filter, &allow, &status) &&
943        unmarshallFilter(filter, &drop, &status)) {
944        Mutex::Autolock lock(mLock);
945
946        mMetadataAllow = allow;
947        mMetadataDrop = drop;
948    }
949    return status;
950}
951
952status_t MediaPlayerService::Client::getMetadata(
953        bool update_only, bool apply_filter, Parcel *reply)
954{
955    sp<MediaPlayerBase> player = getPlayer();
956    if (player == 0) return UNKNOWN_ERROR;
957
958    status_t status;
959    // Placeholder for the return code, updated by the caller.
960    reply->writeInt32(-1);
961
962    media::Metadata::Filter ids;
963
964    // We don't block notifications while we fetch the data. We clear
965    // mMetadataUpdated first so we don't lose notifications happening
966    // during the rest of this call.
967    {
968        Mutex::Autolock lock(mLock);
969        if (update_only) {
970            ids = mMetadataUpdated;
971        }
972        mMetadataUpdated.clear();
973    }
974
975    media::Metadata metadata(reply);
976
977    metadata.appendHeader();
978    status = player->getMetadata(ids, reply);
979
980    if (status != OK) {
981        metadata.resetParcel();
982        ALOGE("getMetadata failed %d", status);
983        return status;
984    }
985
986    // FIXME: Implement filtering on the result. Not critical since
987    // filtering takes place on the update notifications already. This
988    // would be when all the metadata are fetch and a filter is set.
989
990    // Everything is fine, update the metadata length.
991    metadata.updateLength();
992    return OK;
993}
994
995status_t MediaPlayerService::Client::prepareAsync()
996{
997    ALOGV("[%d] prepareAsync", mConnId);
998    sp<MediaPlayerBase> p = getPlayer();
999    if (p == 0) return UNKNOWN_ERROR;
1000    status_t ret = p->prepareAsync();
1001#if CALLBACK_ANTAGONIZER
1002    ALOGD("start Antagonizer");
1003    if (ret == NO_ERROR) mAntagonizer->start();
1004#endif
1005    return ret;
1006}
1007
1008status_t MediaPlayerService::Client::start()
1009{
1010    ALOGV("[%d] start", mConnId);
1011    sp<MediaPlayerBase> p = getPlayer();
1012    if (p == 0) return UNKNOWN_ERROR;
1013    p->setLooping(mLoop);
1014    return p->start();
1015}
1016
1017status_t MediaPlayerService::Client::stop()
1018{
1019    ALOGV("[%d] stop", mConnId);
1020    sp<MediaPlayerBase> p = getPlayer();
1021    if (p == 0) return UNKNOWN_ERROR;
1022    return p->stop();
1023}
1024
1025status_t MediaPlayerService::Client::pause()
1026{
1027    ALOGV("[%d] pause", mConnId);
1028    sp<MediaPlayerBase> p = getPlayer();
1029    if (p == 0) return UNKNOWN_ERROR;
1030    return p->pause();
1031}
1032
1033status_t MediaPlayerService::Client::isPlaying(bool* state)
1034{
1035    *state = false;
1036    sp<MediaPlayerBase> p = getPlayer();
1037    if (p == 0) return UNKNOWN_ERROR;
1038    *state = p->isPlaying();
1039    ALOGV("[%d] isPlaying: %d", mConnId, *state);
1040    return NO_ERROR;
1041}
1042
1043status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1044{
1045    ALOGV("getCurrentPosition");
1046    sp<MediaPlayerBase> p = getPlayer();
1047    if (p == 0) return UNKNOWN_ERROR;
1048    status_t ret = p->getCurrentPosition(msec);
1049    if (ret == NO_ERROR) {
1050        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1051    } else {
1052        ALOGE("getCurrentPosition returned %d", ret);
1053    }
1054    return ret;
1055}
1056
1057status_t MediaPlayerService::Client::getDuration(int *msec)
1058{
1059    ALOGV("getDuration");
1060    sp<MediaPlayerBase> p = getPlayer();
1061    if (p == 0) return UNKNOWN_ERROR;
1062    status_t ret = p->getDuration(msec);
1063    if (ret == NO_ERROR) {
1064        ALOGV("[%d] getDuration = %d", mConnId, *msec);
1065    } else {
1066        ALOGE("getDuration returned %d", ret);
1067    }
1068    return ret;
1069}
1070
1071status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1072    ALOGV("setNextPlayer");
1073    Mutex::Autolock l(mLock);
1074    sp<Client> c = static_cast<Client*>(player.get());
1075    mNextClient = c;
1076    if (mAudioOutput != NULL && c != NULL) {
1077        mAudioOutput->setNextOutput(c->mAudioOutput);
1078    } else {
1079        ALOGE("no current audio output");
1080    }
1081    return OK;
1082}
1083
1084
1085status_t MediaPlayerService::Client::seekTo(int msec)
1086{
1087    ALOGV("[%d] seekTo(%d)", mConnId, msec);
1088    sp<MediaPlayerBase> p = getPlayer();
1089    if (p == 0) return UNKNOWN_ERROR;
1090    return p->seekTo(msec);
1091}
1092
1093status_t MediaPlayerService::Client::reset()
1094{
1095    ALOGV("[%d] reset", mConnId);
1096    mRetransmitEndpointValid = false;
1097    sp<MediaPlayerBase> p = getPlayer();
1098    if (p == 0) return UNKNOWN_ERROR;
1099    return p->reset();
1100}
1101
1102status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1103{
1104    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1105    // TODO: for hardware output, call player instead
1106    Mutex::Autolock l(mLock);
1107    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1108    return NO_ERROR;
1109}
1110
1111status_t MediaPlayerService::Client::setLooping(int loop)
1112{
1113    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1114    mLoop = loop;
1115    sp<MediaPlayerBase> p = getPlayer();
1116    if (p != 0) return p->setLooping(loop);
1117    return NO_ERROR;
1118}
1119
1120status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1121{
1122    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1123
1124    // for hardware output, call player instead
1125    sp<MediaPlayerBase> p = getPlayer();
1126    {
1127      Mutex::Autolock l(mLock);
1128      if (p != 0 && p->hardwareOutput()) {
1129          MediaPlayerHWInterface* hwp =
1130                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1131          return hwp->setVolume(leftVolume, rightVolume);
1132      } else {
1133          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1134          return NO_ERROR;
1135      }
1136    }
1137
1138    return NO_ERROR;
1139}
1140
1141status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1142{
1143    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1144    Mutex::Autolock l(mLock);
1145    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1146    return NO_ERROR;
1147}
1148
1149status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1150{
1151    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1152    Mutex::Autolock l(mLock);
1153    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1154    return NO_ERROR;
1155}
1156
1157status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1158    ALOGV("[%d] setParameter(%d)", mConnId, key);
1159    sp<MediaPlayerBase> p = getPlayer();
1160    if (p == 0) return UNKNOWN_ERROR;
1161    return p->setParameter(key, request);
1162}
1163
1164status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1165    ALOGV("[%d] getParameter(%d)", mConnId, key);
1166    sp<MediaPlayerBase> p = getPlayer();
1167    if (p == 0) return UNKNOWN_ERROR;
1168    return p->getParameter(key, reply);
1169}
1170
1171status_t MediaPlayerService::Client::setRetransmitEndpoint(
1172        const struct sockaddr_in* endpoint) {
1173
1174    if (NULL != endpoint) {
1175        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1176        uint16_t p = ntohs(endpoint->sin_port);
1177        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1178                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1179    } else {
1180        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1181    }
1182
1183    sp<MediaPlayerBase> p = getPlayer();
1184
1185    // Right now, the only valid time to set a retransmit endpoint is before
1186    // player selection has been made (since the presence or absence of a
1187    // retransmit endpoint is going to determine which player is selected during
1188    // setDataSource).
1189    if (p != 0) return INVALID_OPERATION;
1190
1191    if (NULL != endpoint) {
1192        mRetransmitEndpoint = *endpoint;
1193        mRetransmitEndpointValid = true;
1194    } else {
1195        mRetransmitEndpointValid = false;
1196    }
1197
1198    return NO_ERROR;
1199}
1200
1201void MediaPlayerService::Client::notify(
1202        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1203{
1204    Client* client = static_cast<Client*>(cookie);
1205
1206    {
1207        Mutex::Autolock l(client->mLock);
1208        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1209            client->mAudioOutput->switchToNextOutput();
1210            client->mNextClient->start();
1211            client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1212        }
1213    }
1214
1215    if (MEDIA_INFO == msg &&
1216        MEDIA_INFO_METADATA_UPDATE == ext1) {
1217        const media::Metadata::Type metadata_type = ext2;
1218
1219        if(client->shouldDropMetadata(metadata_type)) {
1220            return;
1221        }
1222
1223        // Update the list of metadata that have changed. getMetadata
1224        // also access mMetadataUpdated and clears it.
1225        client->addNewMetadataUpdate(metadata_type);
1226    }
1227    ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1228    client->mClient->notify(msg, ext1, ext2, obj);
1229}
1230
1231
1232bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1233{
1234    Mutex::Autolock lock(mLock);
1235
1236    if (findMetadata(mMetadataDrop, code)) {
1237        return true;
1238    }
1239
1240    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1241        return false;
1242    } else {
1243        return true;
1244    }
1245}
1246
1247
1248void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1249    Mutex::Autolock lock(mLock);
1250    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1251        mMetadataUpdated.add(metadata_type);
1252    }
1253}
1254
1255#if CALLBACK_ANTAGONIZER
1256const int Antagonizer::interval = 10000; // 10 msecs
1257
1258Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1259    mExit(false), mActive(false), mClient(client), mCb(cb)
1260{
1261    createThread(callbackThread, this);
1262}
1263
1264void Antagonizer::kill()
1265{
1266    Mutex::Autolock _l(mLock);
1267    mActive = false;
1268    mExit = true;
1269    mCondition.wait(mLock);
1270}
1271
1272int Antagonizer::callbackThread(void* user)
1273{
1274    ALOGD("Antagonizer started");
1275    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1276    while (!p->mExit) {
1277        if (p->mActive) {
1278            ALOGV("send event");
1279            p->mCb(p->mClient, 0, 0, 0);
1280        }
1281        usleep(interval);
1282    }
1283    Mutex::Autolock _l(p->mLock);
1284    p->mCondition.signal();
1285    ALOGD("Antagonizer stopped");
1286    return 0;
1287}
1288#endif
1289
1290static size_t kDefaultHeapSize = 1024 * 1024; // 1MB
1291
1292sp<IMemory> MediaPlayerService::decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
1293{
1294    ALOGV("decode(%s)", url);
1295    sp<MemoryBase> mem;
1296    sp<MediaPlayerBase> player;
1297
1298    // Protect our precious, precious DRMd ringtones by only allowing
1299    // decoding of http, but not filesystem paths or content Uris.
1300    // If the application wants to decode those, it should open a
1301    // filedescriptor for them and use that.
1302    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1303        ALOGD("Can't decode %s by path, use filedescriptor instead", url);
1304        return mem;
1305    }
1306
1307    player_type playerType = getPlayerType(url);
1308    ALOGV("player type = %d", playerType);
1309
1310    // create the right type of player
1311    sp<AudioCache> cache = new AudioCache(url);
1312    player = android::createPlayer(playerType, cache.get(), cache->notify);
1313    if (player == NULL) goto Exit;
1314    if (player->hardwareOutput()) goto Exit;
1315
1316    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1317
1318    // set data source
1319    if (player->setDataSource(url) != NO_ERROR) goto Exit;
1320
1321    ALOGV("prepare");
1322    player->prepareAsync();
1323
1324    ALOGV("wait for prepare");
1325    if (cache->wait() != NO_ERROR) goto Exit;
1326
1327    ALOGV("start");
1328    player->start();
1329
1330    ALOGV("wait for playback complete");
1331    cache->wait();
1332    // in case of error, return what was successfully decoded.
1333    if (cache->size() == 0) {
1334        goto Exit;
1335    }
1336
1337    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1338    *pSampleRate = cache->sampleRate();
1339    *pNumChannels = cache->channelCount();
1340    *pFormat = cache->format();
1341    ALOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1342
1343Exit:
1344    if (player != 0) player->reset();
1345    return mem;
1346}
1347
1348sp<IMemory> MediaPlayerService::decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat)
1349{
1350    ALOGV("decode(%d, %lld, %lld)", fd, offset, length);
1351    sp<MemoryBase> mem;
1352    sp<MediaPlayerBase> player;
1353
1354    player_type playerType = getPlayerType(fd, offset, length);
1355    ALOGV("player type = %d", playerType);
1356
1357    // create the right type of player
1358    sp<AudioCache> cache = new AudioCache("decode_fd");
1359    player = android::createPlayer(playerType, cache.get(), cache->notify);
1360    if (player == NULL) goto Exit;
1361    if (player->hardwareOutput()) goto Exit;
1362
1363    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1364
1365    // set data source
1366    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1367
1368    ALOGV("prepare");
1369    player->prepareAsync();
1370
1371    ALOGV("wait for prepare");
1372    if (cache->wait() != NO_ERROR) goto Exit;
1373
1374    ALOGV("start");
1375    player->start();
1376
1377    ALOGV("wait for playback complete");
1378    cache->wait();
1379    // in case of error, return what was successfully decoded.
1380    if (cache->size() == 0) {
1381        goto Exit;
1382    }
1383
1384    mem = new MemoryBase(cache->getHeap(), 0, cache->size());
1385    *pSampleRate = cache->sampleRate();
1386    *pNumChannels = cache->channelCount();
1387    *pFormat = cache->format();
1388    ALOGV("return memory @ %p, sampleRate=%u, channelCount = %d, format = %d", mem->pointer(), *pSampleRate, *pNumChannels, *pFormat);
1389
1390Exit:
1391    if (player != 0) player->reset();
1392    ::close(fd);
1393    return mem;
1394}
1395
1396
1397#undef LOG_TAG
1398#define LOG_TAG "AudioSink"
1399MediaPlayerService::AudioOutput::AudioOutput(int sessionId)
1400    : mCallback(NULL),
1401      mCallbackCookie(NULL),
1402      mCallbackData(NULL),
1403      mSessionId(sessionId) {
1404    ALOGV("AudioOutput(%d)", sessionId);
1405    mTrack = 0;
1406    mRecycledTrack = 0;
1407    mStreamType = AUDIO_STREAM_MUSIC;
1408    mLeftVolume = 1.0;
1409    mRightVolume = 1.0;
1410    mPlaybackRatePermille = 1000;
1411    mSampleRateHz = 0;
1412    mMsecsPerFrame = 0;
1413    mAuxEffectId = 0;
1414    mSendLevel = 0.0;
1415    setMinBufferCount();
1416}
1417
1418MediaPlayerService::AudioOutput::~AudioOutput()
1419{
1420    close();
1421    delete mRecycledTrack;
1422    delete mCallbackData;
1423}
1424
1425void MediaPlayerService::AudioOutput::setMinBufferCount()
1426{
1427    char value[PROPERTY_VALUE_MAX];
1428    if (property_get("ro.kernel.qemu", value, 0)) {
1429        mIsOnEmulator = true;
1430        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1431    }
1432}
1433
1434bool MediaPlayerService::AudioOutput::isOnEmulator()
1435{
1436    setMinBufferCount();
1437    return mIsOnEmulator;
1438}
1439
1440int MediaPlayerService::AudioOutput::getMinBufferCount()
1441{
1442    setMinBufferCount();
1443    return mMinBufferCount;
1444}
1445
1446ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1447{
1448    if (mTrack == 0) return NO_INIT;
1449    return mTrack->frameCount() * frameSize();
1450}
1451
1452ssize_t MediaPlayerService::AudioOutput::frameCount() const
1453{
1454    if (mTrack == 0) return NO_INIT;
1455    return mTrack->frameCount();
1456}
1457
1458ssize_t MediaPlayerService::AudioOutput::channelCount() const
1459{
1460    if (mTrack == 0) return NO_INIT;
1461    return mTrack->channelCount();
1462}
1463
1464ssize_t MediaPlayerService::AudioOutput::frameSize() const
1465{
1466    if (mTrack == 0) return NO_INIT;
1467    return mTrack->frameSize();
1468}
1469
1470uint32_t MediaPlayerService::AudioOutput::latency () const
1471{
1472    if (mTrack == 0) return 0;
1473    return mTrack->latency();
1474}
1475
1476float MediaPlayerService::AudioOutput::msecsPerFrame() const
1477{
1478    return mMsecsPerFrame;
1479}
1480
1481status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position)
1482{
1483    if (mTrack == 0) return NO_INIT;
1484    return mTrack->getPosition(position);
1485}
1486
1487status_t MediaPlayerService::AudioOutput::open(
1488        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1489        audio_format_t format, int bufferCount,
1490        AudioCallback cb, void *cookie)
1491{
1492    mCallback = cb;
1493    mCallbackCookie = cookie;
1494
1495    // Check argument "bufferCount" against the mininum buffer count
1496    if (bufferCount < mMinBufferCount) {
1497        ALOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1498        bufferCount = mMinBufferCount;
1499
1500    }
1501    ALOGV("open(%u, %d, 0x%x, %d, %d, %d)", sampleRate, channelCount, channelMask,
1502            format, bufferCount, mSessionId);
1503    int afSampleRate;
1504    int afFrameCount;
1505    int frameCount;
1506
1507    if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1508        return NO_INIT;
1509    }
1510    if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1511        return NO_INIT;
1512    }
1513
1514    frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1515
1516    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1517        channelMask = audio_channel_mask_from_count(channelCount);
1518        if (0 == channelMask) {
1519            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1520            return NO_INIT;
1521        }
1522    }
1523    if (mRecycledTrack) {
1524        // check if the existing track can be reused as-is, or if a new track needs to be created.
1525
1526        bool reuse = true;
1527        if ((mCallbackData == NULL && mCallback != NULL) ||
1528                (mCallbackData != NULL && mCallback == NULL)) {
1529            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1530            ALOGV("can't chain callback and write");
1531            reuse = false;
1532        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1533                (mRecycledTrack->channelCount() != channelCount) ||
1534                (mRecycledTrack->frameCount() != frameCount)) {
1535            ALOGV("samplerate, channelcount or framecount differ");
1536            reuse = false;
1537        }
1538        if (reuse) {
1539            ALOGV("chaining to next output");
1540            close();
1541            mTrack = mRecycledTrack;
1542            mRecycledTrack = NULL;
1543            if (mCallbackData != NULL) {
1544                mCallbackData->setOutput(this);
1545            }
1546            return OK;
1547        }
1548
1549        // if we're not going to reuse the track, unblock and flush it
1550        if (mCallbackData != NULL) {
1551            mCallbackData->setOutput(NULL);
1552            mCallbackData->endTrackSwitch();
1553        }
1554        mRecycledTrack->flush();
1555        delete mRecycledTrack;
1556        mRecycledTrack = NULL;
1557        delete mCallbackData;
1558        mCallbackData = NULL;
1559        close();
1560    }
1561
1562    AudioTrack *t;
1563    if (mCallback != NULL) {
1564        mCallbackData = new CallbackData(this);
1565        t = new AudioTrack(
1566                mStreamType,
1567                sampleRate,
1568                format,
1569                channelMask,
1570                frameCount,
1571                AUDIO_POLICY_OUTPUT_FLAG_NONE,
1572                CallbackWrapper,
1573                mCallbackData,
1574                0,
1575                mSessionId);
1576    } else {
1577        t = new AudioTrack(
1578                mStreamType,
1579                sampleRate,
1580                format,
1581                channelMask,
1582                frameCount,
1583                AUDIO_POLICY_OUTPUT_FLAG_NONE,
1584                NULL,
1585                NULL,
1586                0,
1587                mSessionId);
1588    }
1589
1590    if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1591        ALOGE("Unable to create audio track");
1592        delete t;
1593        return NO_INIT;
1594    }
1595
1596    ALOGV("setVolume");
1597    t->setVolume(mLeftVolume, mRightVolume);
1598
1599    mSampleRateHz = sampleRate;
1600    mMsecsPerFrame = mPlaybackRatePermille / (float) sampleRate;
1601    mTrack = t;
1602
1603    status_t res = t->setSampleRate(mPlaybackRatePermille * mSampleRateHz / 1000);
1604    if (res != NO_ERROR) {
1605        return res;
1606    }
1607    t->setAuxEffectSendLevel(mSendLevel);
1608    return t->attachAuxEffect(mAuxEffectId);;
1609}
1610
1611void MediaPlayerService::AudioOutput::start()
1612{
1613    ALOGV("start");
1614    if (mCallbackData != NULL) {
1615        mCallbackData->endTrackSwitch();
1616    }
1617    if (mTrack) {
1618        mTrack->setVolume(mLeftVolume, mRightVolume);
1619        mTrack->setAuxEffectSendLevel(mSendLevel);
1620        mTrack->start();
1621    }
1622}
1623
1624void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1625    mNextOutput = nextOutput;
1626}
1627
1628
1629void MediaPlayerService::AudioOutput::switchToNextOutput() {
1630    ALOGV("switchToNextOutput");
1631    if (mNextOutput != NULL) {
1632        if (mCallbackData != NULL) {
1633            mCallbackData->beginTrackSwitch();
1634        }
1635        delete mNextOutput->mCallbackData;
1636        mNextOutput->mCallbackData = mCallbackData;
1637        mCallbackData = NULL;
1638        mNextOutput->mRecycledTrack = mTrack;
1639        mTrack = NULL;
1640        mNextOutput->mSampleRateHz = mSampleRateHz;
1641        mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1642    }
1643}
1644
1645ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1646{
1647    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1648
1649    //ALOGV("write(%p, %u)", buffer, size);
1650    if (mTrack) {
1651        ssize_t ret = mTrack->write(buffer, size);
1652        return ret;
1653    }
1654    return NO_INIT;
1655}
1656
1657void MediaPlayerService::AudioOutput::stop()
1658{
1659    ALOGV("stop");
1660    if (mTrack) mTrack->stop();
1661}
1662
1663void MediaPlayerService::AudioOutput::flush()
1664{
1665    ALOGV("flush");
1666    if (mTrack) mTrack->flush();
1667}
1668
1669void MediaPlayerService::AudioOutput::pause()
1670{
1671    ALOGV("pause");
1672    if (mTrack) mTrack->pause();
1673}
1674
1675void MediaPlayerService::AudioOutput::close()
1676{
1677    ALOGV("close");
1678    delete mTrack;
1679    mTrack = 0;
1680}
1681
1682void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1683{
1684    ALOGV("setVolume(%f, %f)", left, right);
1685    mLeftVolume = left;
1686    mRightVolume = right;
1687    if (mTrack) {
1688        mTrack->setVolume(left, right);
1689    }
1690}
1691
1692status_t MediaPlayerService::AudioOutput::setPlaybackRatePermille(int32_t ratePermille)
1693{
1694    ALOGV("setPlaybackRatePermille(%d)", ratePermille);
1695    status_t res = NO_ERROR;
1696    if (mTrack) {
1697        res = mTrack->setSampleRate(ratePermille * mSampleRateHz / 1000);
1698    } else {
1699        res = NO_INIT;
1700    }
1701    mPlaybackRatePermille = ratePermille;
1702    if (mSampleRateHz != 0) {
1703        mMsecsPerFrame = mPlaybackRatePermille / (float) mSampleRateHz;
1704    }
1705    return res;
1706}
1707
1708status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1709{
1710    ALOGV("setAuxEffectSendLevel(%f)", level);
1711    mSendLevel = level;
1712    if (mTrack) {
1713        return mTrack->setAuxEffectSendLevel(level);
1714    }
1715    return NO_ERROR;
1716}
1717
1718status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1719{
1720    ALOGV("attachAuxEffect(%d)", effectId);
1721    mAuxEffectId = effectId;
1722    if (mTrack) {
1723        return mTrack->attachAuxEffect(effectId);
1724    }
1725    return NO_ERROR;
1726}
1727
1728// static
1729void MediaPlayerService::AudioOutput::CallbackWrapper(
1730        int event, void *cookie, void *info) {
1731    //ALOGV("callbackwrapper");
1732    if (event != AudioTrack::EVENT_MORE_DATA) {
1733        return;
1734    }
1735
1736    CallbackData *data = (CallbackData*)cookie;
1737    data->lock();
1738    AudioOutput *me = data->getOutput();
1739    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1740    if (me == NULL) {
1741        // no output set, likely because the track was scheduled to be reused
1742        // by another player, but the format turned out to be incompatible.
1743        data->unlock();
1744        buffer->size = 0;
1745        return;
1746    }
1747
1748    size_t actualSize = (*me->mCallback)(
1749            me, buffer->raw, buffer->size, me->mCallbackCookie);
1750
1751    if (actualSize == 0 && buffer->size > 0 && me->mNextOutput == NULL) {
1752        // We've reached EOS but the audio track is not stopped yet,
1753        // keep playing silence.
1754
1755        memset(buffer->raw, 0, buffer->size);
1756        actualSize = buffer->size;
1757    }
1758
1759    buffer->size = actualSize;
1760    data->unlock();
1761}
1762
1763int MediaPlayerService::AudioOutput::getSessionId()
1764{
1765    return mSessionId;
1766}
1767
1768#undef LOG_TAG
1769#define LOG_TAG "AudioCache"
1770MediaPlayerService::AudioCache::AudioCache(const char* name) :
1771    mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1772    mError(NO_ERROR), mCommandComplete(false)
1773{
1774    // create ashmem heap
1775    mHeap = new MemoryHeapBase(kDefaultHeapSize, 0, name);
1776}
1777
1778uint32_t MediaPlayerService::AudioCache::latency () const
1779{
1780    return 0;
1781}
1782
1783float MediaPlayerService::AudioCache::msecsPerFrame() const
1784{
1785    return mMsecsPerFrame;
1786}
1787
1788status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position)
1789{
1790    if (position == 0) return BAD_VALUE;
1791    *position = mSize;
1792    return NO_ERROR;
1793}
1794
1795////////////////////////////////////////////////////////////////////////////////
1796
1797struct CallbackThread : public Thread {
1798    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1799                   MediaPlayerBase::AudioSink::AudioCallback cb,
1800                   void *cookie);
1801
1802protected:
1803    virtual ~CallbackThread();
1804
1805    virtual bool threadLoop();
1806
1807private:
1808    wp<MediaPlayerBase::AudioSink> mSink;
1809    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1810    void *mCookie;
1811    void *mBuffer;
1812    size_t mBufferSize;
1813
1814    CallbackThread(const CallbackThread &);
1815    CallbackThread &operator=(const CallbackThread &);
1816};
1817
1818CallbackThread::CallbackThread(
1819        const wp<MediaPlayerBase::AudioSink> &sink,
1820        MediaPlayerBase::AudioSink::AudioCallback cb,
1821        void *cookie)
1822    : mSink(sink),
1823      mCallback(cb),
1824      mCookie(cookie),
1825      mBuffer(NULL),
1826      mBufferSize(0) {
1827}
1828
1829CallbackThread::~CallbackThread() {
1830    if (mBuffer) {
1831        free(mBuffer);
1832        mBuffer = NULL;
1833    }
1834}
1835
1836bool CallbackThread::threadLoop() {
1837    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1838    if (sink == NULL) {
1839        return false;
1840    }
1841
1842    if (mBuffer == NULL) {
1843        mBufferSize = sink->bufferSize();
1844        mBuffer = malloc(mBufferSize);
1845    }
1846
1847    size_t actualSize =
1848        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie);
1849
1850    if (actualSize > 0) {
1851        sink->write(mBuffer, actualSize);
1852    }
1853
1854    return true;
1855}
1856
1857////////////////////////////////////////////////////////////////////////////////
1858
1859status_t MediaPlayerService::AudioCache::open(
1860        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1861        audio_format_t format, int bufferCount,
1862        AudioCallback cb, void *cookie)
1863{
1864    ALOGV("open(%u, %d, 0x%x, %d, %d)", sampleRate, channelCount, channelMask, format, bufferCount);
1865    if (mHeap->getHeapID() < 0) {
1866        return NO_INIT;
1867    }
1868
1869    mSampleRate = sampleRate;
1870    mChannelCount = (uint16_t)channelCount;
1871    mFormat = format;
1872    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1873
1874    if (cb != NULL) {
1875        mCallbackThread = new CallbackThread(this, cb, cookie);
1876    }
1877    return NO_ERROR;
1878}
1879
1880void MediaPlayerService::AudioCache::start() {
1881    if (mCallbackThread != NULL) {
1882        mCallbackThread->run("AudioCache callback");
1883    }
1884}
1885
1886void MediaPlayerService::AudioCache::stop() {
1887    if (mCallbackThread != NULL) {
1888        mCallbackThread->requestExitAndWait();
1889    }
1890}
1891
1892ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1893{
1894    ALOGV("write(%p, %u)", buffer, size);
1895    if ((buffer == 0) || (size == 0)) return size;
1896
1897    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1898    if (p == NULL) return NO_INIT;
1899    p += mSize;
1900    ALOGV("memcpy(%p, %p, %u)", p, buffer, size);
1901    if (mSize + size > mHeap->getSize()) {
1902        ALOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1903        size = mHeap->getSize() - mSize;
1904    }
1905    memcpy(p, buffer, size);
1906    mSize += size;
1907    return size;
1908}
1909
1910// call with lock held
1911status_t MediaPlayerService::AudioCache::wait()
1912{
1913    Mutex::Autolock lock(mLock);
1914    while (!mCommandComplete) {
1915        mSignal.wait(mLock);
1916    }
1917    mCommandComplete = false;
1918
1919    if (mError == NO_ERROR) {
1920        ALOGV("wait - success");
1921    } else {
1922        ALOGV("wait - error");
1923    }
1924    return mError;
1925}
1926
1927void MediaPlayerService::AudioCache::notify(
1928        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1929{
1930    ALOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
1931    AudioCache* p = static_cast<AudioCache*>(cookie);
1932
1933    // ignore buffering messages
1934    switch (msg)
1935    {
1936    case MEDIA_ERROR:
1937        ALOGE("Error %d, %d occurred", ext1, ext2);
1938        p->mError = ext1;
1939        break;
1940    case MEDIA_PREPARED:
1941        ALOGV("prepared");
1942        break;
1943    case MEDIA_PLAYBACK_COMPLETE:
1944        ALOGV("playback complete");
1945        break;
1946    default:
1947        ALOGV("ignored");
1948        return;
1949    }
1950
1951    // wake up thread
1952    Mutex::Autolock lock(p->mLock);
1953    p->mCommandComplete = true;
1954    p->mSignal.signal();
1955}
1956
1957int MediaPlayerService::AudioCache::getSessionId()
1958{
1959    return 0;
1960}
1961
1962void MediaPlayerService::addBatteryData(uint32_t params)
1963{
1964    Mutex::Autolock lock(mLock);
1965
1966    int32_t time = systemTime() / 1000000L;
1967
1968    // change audio output devices. This notification comes from AudioFlinger
1969    if ((params & kBatteryDataSpeakerOn)
1970            || (params & kBatteryDataOtherAudioDeviceOn)) {
1971
1972        int deviceOn[NUM_AUDIO_DEVICES];
1973        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1974            deviceOn[i] = 0;
1975        }
1976
1977        if ((params & kBatteryDataSpeakerOn)
1978                && (params & kBatteryDataOtherAudioDeviceOn)) {
1979            deviceOn[SPEAKER_AND_OTHER] = 1;
1980        } else if (params & kBatteryDataSpeakerOn) {
1981            deviceOn[SPEAKER] = 1;
1982        } else {
1983            deviceOn[OTHER_AUDIO_DEVICE] = 1;
1984        }
1985
1986        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1987            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
1988
1989                if (mBatteryAudio.refCount > 0) { // if playing audio
1990                    if (!deviceOn[i]) {
1991                        mBatteryAudio.lastTime[i] += time;
1992                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
1993                        mBatteryAudio.lastTime[i] = 0;
1994                    } else {
1995                        mBatteryAudio.lastTime[i] = 0 - time;
1996                    }
1997                }
1998
1999                mBatteryAudio.deviceOn[i] = deviceOn[i];
2000            }
2001        }
2002        return;
2003    }
2004
2005    // an sudio stream is started
2006    if (params & kBatteryDataAudioFlingerStart) {
2007        // record the start time only if currently no other audio
2008        // is being played
2009        if (mBatteryAudio.refCount == 0) {
2010            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2011                if (mBatteryAudio.deviceOn[i]) {
2012                    mBatteryAudio.lastTime[i] -= time;
2013                }
2014            }
2015        }
2016
2017        mBatteryAudio.refCount ++;
2018        return;
2019
2020    } else if (params & kBatteryDataAudioFlingerStop) {
2021        if (mBatteryAudio.refCount <= 0) {
2022            ALOGW("Battery track warning: refCount is <= 0");
2023            return;
2024        }
2025
2026        // record the stop time only if currently this is the only
2027        // audio being played
2028        if (mBatteryAudio.refCount == 1) {
2029            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2030                if (mBatteryAudio.deviceOn[i]) {
2031                    mBatteryAudio.lastTime[i] += time;
2032                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2033                    mBatteryAudio.lastTime[i] = 0;
2034                }
2035            }
2036        }
2037
2038        mBatteryAudio.refCount --;
2039        return;
2040    }
2041
2042    int uid = IPCThreadState::self()->getCallingUid();
2043    if (uid == AID_MEDIA) {
2044        return;
2045    }
2046    int index = mBatteryData.indexOfKey(uid);
2047
2048    if (index < 0) { // create a new entry for this UID
2049        BatteryUsageInfo info;
2050        info.audioTotalTime = 0;
2051        info.videoTotalTime = 0;
2052        info.audioLastTime = 0;
2053        info.videoLastTime = 0;
2054        info.refCount = 0;
2055
2056        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2057            ALOGE("Battery track error: no memory for new app");
2058            return;
2059        }
2060    }
2061
2062    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2063
2064    if (params & kBatteryDataCodecStarted) {
2065        if (params & kBatteryDataTrackAudio) {
2066            info.audioLastTime -= time;
2067            info.refCount ++;
2068        }
2069        if (params & kBatteryDataTrackVideo) {
2070            info.videoLastTime -= time;
2071            info.refCount ++;
2072        }
2073    } else {
2074        if (info.refCount == 0) {
2075            ALOGW("Battery track warning: refCount is already 0");
2076            return;
2077        } else if (info.refCount < 0) {
2078            ALOGE("Battery track error: refCount < 0");
2079            mBatteryData.removeItem(uid);
2080            return;
2081        }
2082
2083        if (params & kBatteryDataTrackAudio) {
2084            info.audioLastTime += time;
2085            info.refCount --;
2086        }
2087        if (params & kBatteryDataTrackVideo) {
2088            info.videoLastTime += time;
2089            info.refCount --;
2090        }
2091
2092        // no stream is being played by this UID
2093        if (info.refCount == 0) {
2094            info.audioTotalTime += info.audioLastTime;
2095            info.audioLastTime = 0;
2096            info.videoTotalTime += info.videoLastTime;
2097            info.videoLastTime = 0;
2098        }
2099    }
2100}
2101
2102status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2103    Mutex::Autolock lock(mLock);
2104
2105    // audio output devices usage
2106    int32_t time = systemTime() / 1000000L; //in ms
2107    int32_t totalTime;
2108
2109    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2110        totalTime = mBatteryAudio.totalTime[i];
2111
2112        if (mBatteryAudio.deviceOn[i]
2113            && (mBatteryAudio.lastTime[i] != 0)) {
2114                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2115                totalTime += tmpTime;
2116        }
2117
2118        reply->writeInt32(totalTime);
2119        // reset the total time
2120        mBatteryAudio.totalTime[i] = 0;
2121   }
2122
2123    // codec usage
2124    BatteryUsageInfo info;
2125    int size = mBatteryData.size();
2126
2127    reply->writeInt32(size);
2128    int i = 0;
2129
2130    while (i < size) {
2131        info = mBatteryData.valueAt(i);
2132
2133        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2134        reply->writeInt32(info.audioTotalTime);
2135        reply->writeInt32(info.videoTotalTime);
2136
2137        info.audioTotalTime = 0;
2138        info.videoTotalTime = 0;
2139
2140        // remove the UID entry where no stream is being played
2141        if (info.refCount <= 0) {
2142            mBatteryData.removeItemsAt(i);
2143            size --;
2144            i --;
2145        }
2146        i++;
2147    }
2148    return NO_ERROR;
2149}
2150} // namespace android
2151