MediaPlayerService.cpp revision 1b86fe063badb5f28c467ade39be0f4008688947 
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/IPCThreadState.h>
38#include <binder/IServiceManager.h>
39#include <binder/MemoryHeapBase.h>
40#include <binder/MemoryBase.h>
41#include <gui/Surface.h>
42#include <utils/Errors.h>  // for status_t
43#include <utils/String8.h>
44#include <utils/SystemClock.h>
45#include <utils/Vector.h>
46
47#include <media/IMediaHTTPService.h>
48#include <media/IRemoteDisplay.h>
49#include <media/IRemoteDisplayClient.h>
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#include <media/stagefright/AudioPlayer.h>
58#include <media/stagefright/foundation/ADebug.h>
59
60#include <system/audio.h>
61
62#include <private/android_filesystem_config.h>
63
64#include "ActivityManager.h"
65#include "MediaRecorderClient.h"
66#include "MediaPlayerService.h"
67#include "MetadataRetrieverClient.h"
68#include "MediaPlayerFactory.h"
69
70#include "MidiFile.h"
71#include "TestPlayerStub.h"
72#include "StagefrightPlayer.h"
73#include "nuplayer/NuPlayerDriver.h"
74
75#include <OMX.h>
76
77#include "Crypto.h"
78#include "Drm.h"
79#include "HDCP.h"
80#include "HTTPBase.h"
81#include "RemoteDisplay.h"
82
83namespace {
84using android::media::Metadata;
85using android::status_t;
86using android::OK;
87using android::BAD_VALUE;
88using android::NOT_ENOUGH_DATA;
89using android::Parcel;
90
91// Max number of entries in the filter.
92const int kMaxFilterSize = 64;  // I pulled that out of thin air.
93
94// FIXME: Move all the metadata related function in the Metadata.cpp
95
96
97// Unmarshall a filter from a Parcel.
98// Filter format in a parcel:
99//
100//  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
101// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
102// |                       number of entries (n)                   |
103// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
104// |                       metadata type 1                         |
105// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
106// |                       metadata type 2                         |
107// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
108//  ....
109// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
110// |                       metadata type n                         |
111// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
112//
113// @param p Parcel that should start with a filter.
114// @param[out] filter On exit contains the list of metadata type to be
115//                    filtered.
116// @param[out] status On exit contains the status code to be returned.
117// @return true if the parcel starts with a valid filter.
118bool unmarshallFilter(const Parcel& p,
119                      Metadata::Filter *filter,
120                      status_t *status)
121{
122    int32_t val;
123    if (p.readInt32(&val) != OK)
124    {
125        ALOGE("Failed to read filter's length");
126        *status = NOT_ENOUGH_DATA;
127        return false;
128    }
129
130    if( val > kMaxFilterSize || val < 0)
131    {
132        ALOGE("Invalid filter len %d", val);
133        *status = BAD_VALUE;
134        return false;
135    }
136
137    const size_t num = val;
138
139    filter->clear();
140    filter->setCapacity(num);
141
142    size_t size = num * sizeof(Metadata::Type);
143
144
145    if (p.dataAvail() < size)
146    {
147        ALOGE("Filter too short expected %d but got %d", size, p.dataAvail());
148        *status = NOT_ENOUGH_DATA;
149        return false;
150    }
151
152    const Metadata::Type *data =
153            static_cast<const Metadata::Type*>(p.readInplace(size));
154
155    if (NULL == data)
156    {
157        ALOGE("Filter had no data");
158        *status = BAD_VALUE;
159        return false;
160    }
161
162    // TODO: The stl impl of vector would be more efficient here
163    // because it degenerates into a memcpy on pod types. Try to
164    // replace later or use stl::set.
165    for (size_t i = 0; i < num; ++i)
166    {
167        filter->add(*data);
168        ++data;
169    }
170    *status = OK;
171    return true;
172}
173
174// @param filter Of metadata type.
175// @param val To be searched.
176// @return true if a match was found.
177bool findMetadata(const Metadata::Filter& filter, const int32_t val)
178{
179    // Deal with empty and ANY right away
180    if (filter.isEmpty()) return false;
181    if (filter[0] == Metadata::kAny) return true;
182
183    return filter.indexOf(val) >= 0;
184}
185
186}  // anonymous namespace
187
188
189namespace android {
190
191static bool checkPermission(const char* permissionString) {
192#ifndef HAVE_ANDROID_OS
193    return true;
194#endif
195    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
196    bool ok = checkCallingPermission(String16(permissionString));
197    if (!ok) ALOGE("Request requires %s", permissionString);
198    return ok;
199}
200
201// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
202/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
203/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
204
205void MediaPlayerService::instantiate() {
206    defaultServiceManager()->addService(
207            String16("media.player"), new MediaPlayerService());
208}
209
210MediaPlayerService::MediaPlayerService()
211{
212    ALOGV("MediaPlayerService created");
213    mNextConnId = 1;
214
215    mBatteryAudio.refCount = 0;
216    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
217        mBatteryAudio.deviceOn[i] = 0;
218        mBatteryAudio.lastTime[i] = 0;
219        mBatteryAudio.totalTime[i] = 0;
220    }
221    // speaker is on by default
222    mBatteryAudio.deviceOn[SPEAKER] = 1;
223
224    MediaPlayerFactory::registerBuiltinFactories();
225}
226
227MediaPlayerService::~MediaPlayerService()
228{
229    ALOGV("MediaPlayerService destroyed");
230}
231
232sp<IMediaRecorder> MediaPlayerService::createMediaRecorder()
233{
234    pid_t pid = IPCThreadState::self()->getCallingPid();
235    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid);
236    wp<MediaRecorderClient> w = recorder;
237    Mutex::Autolock lock(mLock);
238    mMediaRecorderClients.add(w);
239    ALOGV("Create new media recorder client from pid %d", pid);
240    return recorder;
241}
242
243void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
244{
245    Mutex::Autolock lock(mLock);
246    mMediaRecorderClients.remove(client);
247    ALOGV("Delete media recorder client");
248}
249
250sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
251{
252    pid_t pid = IPCThreadState::self()->getCallingPid();
253    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
254    ALOGV("Create new media retriever from pid %d", pid);
255    return retriever;
256}
257
258sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
259        int audioSessionId)
260{
261    pid_t pid = IPCThreadState::self()->getCallingPid();
262    int32_t connId = android_atomic_inc(&mNextConnId);
263
264    sp<Client> c = new Client(
265            this, pid, connId, client, audioSessionId,
266            IPCThreadState::self()->getCallingUid());
267
268    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
269         IPCThreadState::self()->getCallingUid());
270
271    wp<Client> w = c;
272    {
273        Mutex::Autolock lock(mLock);
274        mClients.add(w);
275    }
276    return c;
277}
278
279sp<IOMX> MediaPlayerService::getOMX() {
280    Mutex::Autolock autoLock(mLock);
281
282    if (mOMX.get() == NULL) {
283        mOMX = new OMX;
284    }
285
286    return mOMX;
287}
288
289sp<ICrypto> MediaPlayerService::makeCrypto() {
290    return new Crypto;
291}
292
293sp<IDrm> MediaPlayerService::makeDrm() {
294    return new Drm;
295}
296
297sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
298    return new HDCP(createEncryptionModule);
299}
300
301sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
302        const sp<IRemoteDisplayClient>& client, const String8& iface) {
303    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
304        return NULL;
305    }
306
307    return new RemoteDisplay(client, iface.string());
308}
309
310status_t MediaPlayerService::updateProxyConfig(
311        const char *host, int32_t port, const char *exclusionList) {
312    return HTTPBase::UpdateProxyConfig(host, port, exclusionList);
313}
314
315status_t MediaPlayerService::AudioCache::dump(int fd, const Vector<String16>& args) const
316{
317    const size_t SIZE = 256;
318    char buffer[SIZE];
319    String8 result;
320
321    result.append(" AudioCache\n");
322    if (mHeap != 0) {
323        snprintf(buffer, 255, "  heap base(%p), size(%d), flags(%d)\n",
324                mHeap->getBase(), mHeap->getSize(), mHeap->getFlags());
325        result.append(buffer);
326    }
327    snprintf(buffer, 255, "  msec per frame(%f), channel count(%d), format(%d), frame count(%zd)\n",
328            mMsecsPerFrame, mChannelCount, mFormat, mFrameCount);
329    result.append(buffer);
330    snprintf(buffer, 255, "  sample rate(%d), size(%d), error(%d), command complete(%s)\n",
331            mSampleRate, mSize, mError, mCommandComplete?"true":"false");
332    result.append(buffer);
333    ::write(fd, result.string(), result.size());
334    return NO_ERROR;
335}
336
337status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
338{
339    const size_t SIZE = 256;
340    char buffer[SIZE];
341    String8 result;
342
343    result.append(" AudioOutput\n");
344    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
345            mStreamType, mLeftVolume, mRightVolume);
346    result.append(buffer);
347    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
348            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
349    result.append(buffer);
350    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
351            mAuxEffectId, mSendLevel);
352    result.append(buffer);
353
354    ::write(fd, result.string(), result.size());
355    if (mTrack != 0) {
356        mTrack->dump(fd, args);
357    }
358    return NO_ERROR;
359}
360
361status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args) const
362{
363    const size_t SIZE = 256;
364    char buffer[SIZE];
365    String8 result;
366    result.append(" Client\n");
367    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
368            mPid, mConnId, mStatus, mLoop?"true": "false");
369    result.append(buffer);
370    write(fd, result.string(), result.size());
371    if (mPlayer != NULL) {
372        mPlayer->dump(fd, args);
373    }
374    if (mAudioOutput != 0) {
375        mAudioOutput->dump(fd, args);
376    }
377    write(fd, "\n", 1);
378    return NO_ERROR;
379}
380
381status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
382{
383    const size_t SIZE = 256;
384    char buffer[SIZE];
385    String8 result;
386    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
387        snprintf(buffer, SIZE, "Permission Denial: "
388                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
389                IPCThreadState::self()->getCallingPid(),
390                IPCThreadState::self()->getCallingUid());
391        result.append(buffer);
392    } else {
393        Mutex::Autolock lock(mLock);
394        for (int i = 0, n = mClients.size(); i < n; ++i) {
395            sp<Client> c = mClients[i].promote();
396            if (c != 0) c->dump(fd, args);
397        }
398        if (mMediaRecorderClients.size() == 0) {
399                result.append(" No media recorder client\n\n");
400        } else {
401            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
402                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
403                if (c != 0) {
404                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
405                    result.append(buffer);
406                    write(fd, result.string(), result.size());
407                    result = "\n";
408                    c->dump(fd, args);
409                }
410            }
411        }
412
413        result.append(" Files opened and/or mapped:\n");
414        snprintf(buffer, SIZE, "/proc/%d/maps", gettid());
415        FILE *f = fopen(buffer, "r");
416        if (f) {
417            while (!feof(f)) {
418                fgets(buffer, SIZE, f);
419                if (strstr(buffer, " /storage/") ||
420                    strstr(buffer, " /system/sounds/") ||
421                    strstr(buffer, " /data/") ||
422                    strstr(buffer, " /system/media/")) {
423                    result.append("  ");
424                    result.append(buffer);
425                }
426            }
427            fclose(f);
428        } else {
429            result.append("couldn't open ");
430            result.append(buffer);
431            result.append("\n");
432        }
433
434        snprintf(buffer, SIZE, "/proc/%d/fd", gettid());
435        DIR *d = opendir(buffer);
436        if (d) {
437            struct dirent *ent;
438            while((ent = readdir(d)) != NULL) {
439                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
440                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", gettid(), ent->d_name);
441                    struct stat s;
442                    if (lstat(buffer, &s) == 0) {
443                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
444                            char linkto[256];
445                            int len = readlink(buffer, linkto, sizeof(linkto));
446                            if(len > 0) {
447                                if(len > 255) {
448                                    linkto[252] = '.';
449                                    linkto[253] = '.';
450                                    linkto[254] = '.';
451                                    linkto[255] = 0;
452                                } else {
453                                    linkto[len] = 0;
454                                }
455                                if (strstr(linkto, "/storage/") == linkto ||
456                                    strstr(linkto, "/system/sounds/") == linkto ||
457                                    strstr(linkto, "/data/") == linkto ||
458                                    strstr(linkto, "/system/media/") == linkto) {
459                                    result.append("  ");
460                                    result.append(buffer);
461                                    result.append(" -> ");
462                                    result.append(linkto);
463                                    result.append("\n");
464                                }
465                            }
466                        } else {
467                            result.append("  unexpected type for ");
468                            result.append(buffer);
469                            result.append("\n");
470                        }
471                    }
472                }
473            }
474            closedir(d);
475        } else {
476            result.append("couldn't open ");
477            result.append(buffer);
478            result.append("\n");
479        }
480
481        bool dumpMem = false;
482        for (size_t i = 0; i < args.size(); i++) {
483            if (args[i] == String16("-m")) {
484                dumpMem = true;
485            }
486        }
487        if (dumpMem) {
488            dumpMemoryAddresses(fd);
489        }
490    }
491    write(fd, result.string(), result.size());
492    return NO_ERROR;
493}
494
495void MediaPlayerService::removeClient(wp<Client> client)
496{
497    Mutex::Autolock lock(mLock);
498    mClients.remove(client);
499}
500
501MediaPlayerService::Client::Client(
502        const sp<MediaPlayerService>& service, pid_t pid,
503        int32_t connId, const sp<IMediaPlayerClient>& client,
504        int audioSessionId, uid_t uid)
505{
506    ALOGV("Client(%d) constructor", connId);
507    mPid = pid;
508    mConnId = connId;
509    mService = service;
510    mClient = client;
511    mLoop = false;
512    mStatus = NO_INIT;
513    mAudioSessionId = audioSessionId;
514    mUID = uid;
515    mRetransmitEndpointValid = false;
516
517#if CALLBACK_ANTAGONIZER
518    ALOGD("create Antagonizer");
519    mAntagonizer = new Antagonizer(notify, this);
520#endif
521}
522
523MediaPlayerService::Client::~Client()
524{
525    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
526    mAudioOutput.clear();
527    wp<Client> client(this);
528    disconnect();
529    mService->removeClient(client);
530}
531
532void MediaPlayerService::Client::disconnect()
533{
534    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
535    // grab local reference and clear main reference to prevent future
536    // access to object
537    sp<MediaPlayerBase> p;
538    {
539        Mutex::Autolock l(mLock);
540        p = mPlayer;
541        mClient.clear();
542    }
543
544    mPlayer.clear();
545
546    // clear the notification to prevent callbacks to dead client
547    // and reset the player. We assume the player will serialize
548    // access to itself if necessary.
549    if (p != 0) {
550        p->setNotifyCallback(0, 0);
551#if CALLBACK_ANTAGONIZER
552        ALOGD("kill Antagonizer");
553        mAntagonizer->kill();
554#endif
555        p->reset();
556    }
557
558    disconnectNativeWindow();
559
560    IPCThreadState::self()->flushCommands();
561}
562
563sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
564{
565    // determine if we have the right player type
566    sp<MediaPlayerBase> p = mPlayer;
567    if ((p != NULL) && (p->playerType() != playerType)) {
568        ALOGV("delete player");
569        p.clear();
570    }
571    if (p == NULL) {
572        p = MediaPlayerFactory::createPlayer(playerType, this, notify);
573    }
574
575    if (p != NULL) {
576        p->setUID(mUID);
577    }
578
579    return p;
580}
581
582sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
583        player_type playerType)
584{
585    ALOGV("player type = %d", playerType);
586
587    // create the right type of player
588    sp<MediaPlayerBase> p = createPlayer(playerType);
589    if (p == NULL) {
590        return p;
591    }
592
593    if (!p->hardwareOutput()) {
594        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid());
595        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
596    }
597
598    return p;
599}
600
601void MediaPlayerService::Client::setDataSource_post(
602        const sp<MediaPlayerBase>& p,
603        status_t status)
604{
605    ALOGV(" setDataSource");
606    mStatus = status;
607    if (mStatus != OK) {
608        ALOGE("  error: %d", mStatus);
609        return;
610    }
611
612    // Set the re-transmission endpoint if one was chosen.
613    if (mRetransmitEndpointValid) {
614        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
615        if (mStatus != NO_ERROR) {
616            ALOGE("setRetransmitEndpoint error: %d", mStatus);
617        }
618    }
619
620    if (mStatus == OK) {
621        mPlayer = p;
622    }
623}
624
625status_t MediaPlayerService::Client::setDataSource(
626        const sp<IMediaHTTPService> &httpService,
627        const char *url,
628        const KeyedVector<String8, String8> *headers)
629{
630    ALOGV("setDataSource(%s)", url);
631    if (url == NULL)
632        return UNKNOWN_ERROR;
633
634    if ((strncmp(url, "http://", 7) == 0) ||
635        (strncmp(url, "https://", 8) == 0) ||
636        (strncmp(url, "rtsp://", 7) == 0)) {
637        if (!checkPermission("android.permission.INTERNET")) {
638            return PERMISSION_DENIED;
639        }
640    }
641
642    if (strncmp(url, "content://", 10) == 0) {
643        // get a filedescriptor for the content Uri and
644        // pass it to the setDataSource(fd) method
645
646        String16 url16(url);
647        int fd = android::openContentProviderFile(url16);
648        if (fd < 0)
649        {
650            ALOGE("Couldn't open fd for %s", url);
651            return UNKNOWN_ERROR;
652        }
653        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
654        close(fd);
655        return mStatus;
656    } else {
657        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
658        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
659        if (p == NULL) {
660            return NO_INIT;
661        }
662
663        setDataSource_post(p, p->setDataSource(httpService, url, headers));
664        return mStatus;
665    }
666}
667
668status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
669{
670    ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
671    struct stat sb;
672    int ret = fstat(fd, &sb);
673    if (ret != 0) {
674        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
675        return UNKNOWN_ERROR;
676    }
677
678    ALOGV("st_dev  = %llu", sb.st_dev);
679    ALOGV("st_mode = %u", sb.st_mode);
680    ALOGV("st_uid  = %lu", sb.st_uid);
681    ALOGV("st_gid  = %lu", sb.st_gid);
682    ALOGV("st_size = %llu", sb.st_size);
683
684    if (offset >= sb.st_size) {
685        ALOGE("offset error");
686        ::close(fd);
687        return UNKNOWN_ERROR;
688    }
689    if (offset + length > sb.st_size) {
690        length = sb.st_size - offset;
691        ALOGV("calculated length = %lld", length);
692    }
693
694    player_type playerType = MediaPlayerFactory::getPlayerType(this,
695                                                               fd,
696                                                               offset,
697                                                               length);
698    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
699    if (p == NULL) {
700        return NO_INIT;
701    }
702
703    // now set data source
704    setDataSource_post(p, p->setDataSource(fd, offset, length));
705    return mStatus;
706}
707
708status_t MediaPlayerService::Client::setDataSource(
709        const sp<IStreamSource> &source) {
710    // create the right type of player
711    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
712    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
713    if (p == NULL) {
714        return NO_INIT;
715    }
716
717    // now set data source
718    setDataSource_post(p, p->setDataSource(source));
719    return mStatus;
720}
721
722void MediaPlayerService::Client::disconnectNativeWindow() {
723    if (mConnectedWindow != NULL) {
724        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
725                NATIVE_WINDOW_API_MEDIA);
726
727        if (err != OK) {
728            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
729                    strerror(-err), err);
730        }
731    }
732    mConnectedWindow.clear();
733}
734
735status_t MediaPlayerService::Client::setVideoSurfaceTexture(
736        const sp<IGraphicBufferProducer>& bufferProducer)
737{
738    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
739    sp<MediaPlayerBase> p = getPlayer();
740    if (p == 0) return UNKNOWN_ERROR;
741
742    sp<IBinder> binder(bufferProducer == NULL ? NULL :
743            bufferProducer->asBinder());
744    if (mConnectedWindowBinder == binder) {
745        return OK;
746    }
747
748    sp<ANativeWindow> anw;
749    if (bufferProducer != NULL) {
750        anw = new Surface(bufferProducer, true /* controlledByApp */);
751        status_t err = native_window_api_connect(anw.get(),
752                NATIVE_WINDOW_API_MEDIA);
753
754        if (err != OK) {
755            ALOGE("setVideoSurfaceTexture failed: %d", err);
756            // Note that we must do the reset before disconnecting from the ANW.
757            // Otherwise queue/dequeue calls could be made on the disconnected
758            // ANW, which may result in errors.
759            reset();
760
761            disconnectNativeWindow();
762
763            return err;
764        }
765    }
766
767    // Note that we must set the player's new GraphicBufferProducer before
768    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
769    // on the disconnected ANW, which may result in errors.
770    status_t err = p->setVideoSurfaceTexture(bufferProducer);
771
772    disconnectNativeWindow();
773
774    mConnectedWindow = anw;
775
776    if (err == OK) {
777        mConnectedWindowBinder = binder;
778    } else {
779        disconnectNativeWindow();
780    }
781
782    return err;
783}
784
785status_t MediaPlayerService::Client::invoke(const Parcel& request,
786                                            Parcel *reply)
787{
788    sp<MediaPlayerBase> p = getPlayer();
789    if (p == NULL) return UNKNOWN_ERROR;
790    return p->invoke(request, reply);
791}
792
793// This call doesn't need to access the native player.
794status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
795{
796    status_t status;
797    media::Metadata::Filter allow, drop;
798
799    if (unmarshallFilter(filter, &allow, &status) &&
800        unmarshallFilter(filter, &drop, &status)) {
801        Mutex::Autolock lock(mLock);
802
803        mMetadataAllow = allow;
804        mMetadataDrop = drop;
805    }
806    return status;
807}
808
809status_t MediaPlayerService::Client::getMetadata(
810        bool update_only, bool apply_filter, Parcel *reply)
811{
812    sp<MediaPlayerBase> player = getPlayer();
813    if (player == 0) return UNKNOWN_ERROR;
814
815    status_t status;
816    // Placeholder for the return code, updated by the caller.
817    reply->writeInt32(-1);
818
819    media::Metadata::Filter ids;
820
821    // We don't block notifications while we fetch the data. We clear
822    // mMetadataUpdated first so we don't lose notifications happening
823    // during the rest of this call.
824    {
825        Mutex::Autolock lock(mLock);
826        if (update_only) {
827            ids = mMetadataUpdated;
828        }
829        mMetadataUpdated.clear();
830    }
831
832    media::Metadata metadata(reply);
833
834    metadata.appendHeader();
835    status = player->getMetadata(ids, reply);
836
837    if (status != OK) {
838        metadata.resetParcel();
839        ALOGE("getMetadata failed %d", status);
840        return status;
841    }
842
843    // FIXME: Implement filtering on the result. Not critical since
844    // filtering takes place on the update notifications already. This
845    // would be when all the metadata are fetch and a filter is set.
846
847    // Everything is fine, update the metadata length.
848    metadata.updateLength();
849    return OK;
850}
851
852status_t MediaPlayerService::Client::prepareAsync()
853{
854    ALOGV("[%d] prepareAsync", mConnId);
855    sp<MediaPlayerBase> p = getPlayer();
856    if (p == 0) return UNKNOWN_ERROR;
857    status_t ret = p->prepareAsync();
858#if CALLBACK_ANTAGONIZER
859    ALOGD("start Antagonizer");
860    if (ret == NO_ERROR) mAntagonizer->start();
861#endif
862    return ret;
863}
864
865status_t MediaPlayerService::Client::start()
866{
867    ALOGV("[%d] start", mConnId);
868    sp<MediaPlayerBase> p = getPlayer();
869    if (p == 0) return UNKNOWN_ERROR;
870    p->setLooping(mLoop);
871    return p->start();
872}
873
874status_t MediaPlayerService::Client::stop()
875{
876    ALOGV("[%d] stop", mConnId);
877    sp<MediaPlayerBase> p = getPlayer();
878    if (p == 0) return UNKNOWN_ERROR;
879    return p->stop();
880}
881
882status_t MediaPlayerService::Client::pause()
883{
884    ALOGV("[%d] pause", mConnId);
885    sp<MediaPlayerBase> p = getPlayer();
886    if (p == 0) return UNKNOWN_ERROR;
887    return p->pause();
888}
889
890status_t MediaPlayerService::Client::isPlaying(bool* state)
891{
892    *state = false;
893    sp<MediaPlayerBase> p = getPlayer();
894    if (p == 0) return UNKNOWN_ERROR;
895    *state = p->isPlaying();
896    ALOGV("[%d] isPlaying: %d", mConnId, *state);
897    return NO_ERROR;
898}
899
900status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
901{
902    ALOGV("getCurrentPosition");
903    sp<MediaPlayerBase> p = getPlayer();
904    if (p == 0) return UNKNOWN_ERROR;
905    status_t ret = p->getCurrentPosition(msec);
906    if (ret == NO_ERROR) {
907        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
908    } else {
909        ALOGE("getCurrentPosition returned %d", ret);
910    }
911    return ret;
912}
913
914status_t MediaPlayerService::Client::getDuration(int *msec)
915{
916    ALOGV("getDuration");
917    sp<MediaPlayerBase> p = getPlayer();
918    if (p == 0) return UNKNOWN_ERROR;
919    status_t ret = p->getDuration(msec);
920    if (ret == NO_ERROR) {
921        ALOGV("[%d] getDuration = %d", mConnId, *msec);
922    } else {
923        ALOGE("getDuration returned %d", ret);
924    }
925    return ret;
926}
927
928status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
929    ALOGV("setNextPlayer");
930    Mutex::Autolock l(mLock);
931    sp<Client> c = static_cast<Client*>(player.get());
932    mNextClient = c;
933
934    if (c != NULL) {
935        if (mAudioOutput != NULL) {
936            mAudioOutput->setNextOutput(c->mAudioOutput);
937        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
938            ALOGE("no current audio output");
939        }
940
941        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
942            mPlayer->setNextPlayer(mNextClient->getPlayer());
943        }
944    }
945
946    return OK;
947}
948
949status_t MediaPlayerService::Client::seekTo(int msec)
950{
951    ALOGV("[%d] seekTo(%d)", mConnId, msec);
952    sp<MediaPlayerBase> p = getPlayer();
953    if (p == 0) return UNKNOWN_ERROR;
954    return p->seekTo(msec);
955}
956
957status_t MediaPlayerService::Client::reset()
958{
959    ALOGV("[%d] reset", mConnId);
960    mRetransmitEndpointValid = false;
961    sp<MediaPlayerBase> p = getPlayer();
962    if (p == 0) return UNKNOWN_ERROR;
963    return p->reset();
964}
965
966status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
967{
968    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
969    // TODO: for hardware output, call player instead
970    Mutex::Autolock l(mLock);
971    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
972    return NO_ERROR;
973}
974
975status_t MediaPlayerService::Client::setLooping(int loop)
976{
977    ALOGV("[%d] setLooping(%d)", mConnId, loop);
978    mLoop = loop;
979    sp<MediaPlayerBase> p = getPlayer();
980    if (p != 0) return p->setLooping(loop);
981    return NO_ERROR;
982}
983
984status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
985{
986    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
987
988    // for hardware output, call player instead
989    sp<MediaPlayerBase> p = getPlayer();
990    {
991      Mutex::Autolock l(mLock);
992      if (p != 0 && p->hardwareOutput()) {
993          MediaPlayerHWInterface* hwp =
994                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
995          return hwp->setVolume(leftVolume, rightVolume);
996      } else {
997          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
998          return NO_ERROR;
999      }
1000    }
1001
1002    return NO_ERROR;
1003}
1004
1005status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1006{
1007    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1008    Mutex::Autolock l(mLock);
1009    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1010    return NO_ERROR;
1011}
1012
1013status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1014{
1015    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1016    Mutex::Autolock l(mLock);
1017    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1018    return NO_ERROR;
1019}
1020
1021status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1022    ALOGV("[%d] setParameter(%d)", mConnId, key);
1023    sp<MediaPlayerBase> p = getPlayer();
1024    if (p == 0) return UNKNOWN_ERROR;
1025    return p->setParameter(key, request);
1026}
1027
1028status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1029    ALOGV("[%d] getParameter(%d)", mConnId, key);
1030    sp<MediaPlayerBase> p = getPlayer();
1031    if (p == 0) return UNKNOWN_ERROR;
1032    return p->getParameter(key, reply);
1033}
1034
1035status_t MediaPlayerService::Client::setRetransmitEndpoint(
1036        const struct sockaddr_in* endpoint) {
1037
1038    if (NULL != endpoint) {
1039        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1040        uint16_t p = ntohs(endpoint->sin_port);
1041        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1042                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1043    } else {
1044        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1045    }
1046
1047    sp<MediaPlayerBase> p = getPlayer();
1048
1049    // Right now, the only valid time to set a retransmit endpoint is before
1050    // player selection has been made (since the presence or absence of a
1051    // retransmit endpoint is going to determine which player is selected during
1052    // setDataSource).
1053    if (p != 0) return INVALID_OPERATION;
1054
1055    if (NULL != endpoint) {
1056        mRetransmitEndpoint = *endpoint;
1057        mRetransmitEndpointValid = true;
1058    } else {
1059        mRetransmitEndpointValid = false;
1060    }
1061
1062    return NO_ERROR;
1063}
1064
1065status_t MediaPlayerService::Client::getRetransmitEndpoint(
1066        struct sockaddr_in* endpoint)
1067{
1068    if (NULL == endpoint)
1069        return BAD_VALUE;
1070
1071    sp<MediaPlayerBase> p = getPlayer();
1072
1073    if (p != NULL)
1074        return p->getRetransmitEndpoint(endpoint);
1075
1076    if (!mRetransmitEndpointValid)
1077        return NO_INIT;
1078
1079    *endpoint = mRetransmitEndpoint;
1080
1081    return NO_ERROR;
1082}
1083
1084void MediaPlayerService::Client::notify(
1085        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1086{
1087    Client* client = static_cast<Client*>(cookie);
1088    if (client == NULL) {
1089        return;
1090    }
1091
1092    sp<IMediaPlayerClient> c;
1093    {
1094        Mutex::Autolock l(client->mLock);
1095        c = client->mClient;
1096        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1097            if (client->mAudioOutput != NULL)
1098                client->mAudioOutput->switchToNextOutput();
1099            client->mNextClient->start();
1100            client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1101        }
1102    }
1103
1104    if (MEDIA_INFO == msg &&
1105        MEDIA_INFO_METADATA_UPDATE == ext1) {
1106        const media::Metadata::Type metadata_type = ext2;
1107
1108        if(client->shouldDropMetadata(metadata_type)) {
1109            return;
1110        }
1111
1112        // Update the list of metadata that have changed. getMetadata
1113        // also access mMetadataUpdated and clears it.
1114        client->addNewMetadataUpdate(metadata_type);
1115    }
1116
1117    if (c != NULL) {
1118        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1119        c->notify(msg, ext1, ext2, obj);
1120    }
1121}
1122
1123
1124bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1125{
1126    Mutex::Autolock lock(mLock);
1127
1128    if (findMetadata(mMetadataDrop, code)) {
1129        return true;
1130    }
1131
1132    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1133        return false;
1134    } else {
1135        return true;
1136    }
1137}
1138
1139
1140void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1141    Mutex::Autolock lock(mLock);
1142    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1143        mMetadataUpdated.add(metadata_type);
1144    }
1145}
1146
1147#if CALLBACK_ANTAGONIZER
1148const int Antagonizer::interval = 10000; // 10 msecs
1149
1150Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1151    mExit(false), mActive(false), mClient(client), mCb(cb)
1152{
1153    createThread(callbackThread, this);
1154}
1155
1156void Antagonizer::kill()
1157{
1158    Mutex::Autolock _l(mLock);
1159    mActive = false;
1160    mExit = true;
1161    mCondition.wait(mLock);
1162}
1163
1164int Antagonizer::callbackThread(void* user)
1165{
1166    ALOGD("Antagonizer started");
1167    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1168    while (!p->mExit) {
1169        if (p->mActive) {
1170            ALOGV("send event");
1171            p->mCb(p->mClient, 0, 0, 0);
1172        }
1173        usleep(interval);
1174    }
1175    Mutex::Autolock _l(p->mLock);
1176    p->mCondition.signal();
1177    ALOGD("Antagonizer stopped");
1178    return 0;
1179}
1180#endif
1181
1182status_t MediaPlayerService::decode(
1183        const sp<IMediaHTTPService> &httpService,
1184        const char* url,
1185        uint32_t *pSampleRate,
1186        int* pNumChannels,
1187        audio_format_t* pFormat,
1188        const sp<IMemoryHeap>& heap,
1189        size_t *pSize)
1190{
1191    ALOGV("decode(%s)", url);
1192    sp<MediaPlayerBase> player;
1193    status_t status = BAD_VALUE;
1194
1195    // Protect our precious, precious DRMd ringtones by only allowing
1196    // decoding of http, but not filesystem paths or content Uris.
1197    // If the application wants to decode those, it should open a
1198    // filedescriptor for them and use that.
1199    if (url != NULL && strncmp(url, "http://", 7) != 0) {
1200        ALOGD("Can't decode %s by path, use filedescriptor instead", url);
1201        return BAD_VALUE;
1202    }
1203
1204    player_type playerType =
1205        MediaPlayerFactory::getPlayerType(NULL /* client */, url);
1206    ALOGV("player type = %d", playerType);
1207
1208    // create the right type of player
1209    sp<AudioCache> cache = new AudioCache(heap);
1210    player = MediaPlayerFactory::createPlayer(playerType, cache.get(), cache->notify);
1211    if (player == NULL) goto Exit;
1212    if (player->hardwareOutput()) goto Exit;
1213
1214    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1215
1216    // set data source
1217    if (player->setDataSource(httpService, url) != NO_ERROR) goto Exit;
1218
1219    ALOGV("prepare");
1220    player->prepareAsync();
1221
1222    ALOGV("wait for prepare");
1223    if (cache->wait() != NO_ERROR) goto Exit;
1224
1225    ALOGV("start");
1226    player->start();
1227
1228    ALOGV("wait for playback complete");
1229    cache->wait();
1230    // in case of error, return what was successfully decoded.
1231    if (cache->size() == 0) {
1232        goto Exit;
1233    }
1234
1235    *pSize = cache->size();
1236    *pSampleRate = cache->sampleRate();
1237    *pNumChannels = cache->channelCount();
1238    *pFormat = cache->format();
1239    ALOGV("return size %d sampleRate=%u, channelCount = %d, format = %d",
1240          *pSize, *pSampleRate, *pNumChannels, *pFormat);
1241    status = NO_ERROR;
1242
1243Exit:
1244    if (player != 0) player->reset();
1245    return status;
1246}
1247
1248status_t MediaPlayerService::decode(int fd, int64_t offset, int64_t length,
1249                                       uint32_t *pSampleRate, int* pNumChannels,
1250                                       audio_format_t* pFormat,
1251                                       const sp<IMemoryHeap>& heap, size_t *pSize)
1252{
1253    ALOGV("decode(%d, %lld, %lld)", fd, offset, length);
1254    sp<MediaPlayerBase> player;
1255    status_t status = BAD_VALUE;
1256
1257    player_type playerType = MediaPlayerFactory::getPlayerType(NULL /* client */,
1258                                                               fd,
1259                                                               offset,
1260                                                               length);
1261    ALOGV("player type = %d", playerType);
1262
1263    // create the right type of player
1264    sp<AudioCache> cache = new AudioCache(heap);
1265    player = MediaPlayerFactory::createPlayer(playerType, cache.get(), cache->notify);
1266    if (player == NULL) goto Exit;
1267    if (player->hardwareOutput()) goto Exit;
1268
1269    static_cast<MediaPlayerInterface*>(player.get())->setAudioSink(cache);
1270
1271    // set data source
1272    if (player->setDataSource(fd, offset, length) != NO_ERROR) goto Exit;
1273
1274    ALOGV("prepare");
1275    player->prepareAsync();
1276
1277    ALOGV("wait for prepare");
1278    if (cache->wait() != NO_ERROR) goto Exit;
1279
1280    ALOGV("start");
1281    player->start();
1282
1283    ALOGV("wait for playback complete");
1284    cache->wait();
1285    // in case of error, return what was successfully decoded.
1286    if (cache->size() == 0) {
1287        goto Exit;
1288    }
1289
1290    *pSize = cache->size();
1291    *pSampleRate = cache->sampleRate();
1292    *pNumChannels = cache->channelCount();
1293    *pFormat = cache->format();
1294    ALOGV("return size %d, sampleRate=%u, channelCount = %d, format = %d",
1295          *pSize, *pSampleRate, *pNumChannels, *pFormat);
1296    status = NO_ERROR;
1297
1298Exit:
1299    if (player != 0) player->reset();
1300    ::close(fd);
1301    return status;
1302}
1303
1304
1305#undef LOG_TAG
1306#define LOG_TAG "AudioSink"
1307MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid)
1308    : mCallback(NULL),
1309      mCallbackCookie(NULL),
1310      mCallbackData(NULL),
1311      mBytesWritten(0),
1312      mSessionId(sessionId),
1313      mUid(uid),
1314      mFlags(AUDIO_OUTPUT_FLAG_NONE) {
1315    ALOGV("AudioOutput(%d)", sessionId);
1316    mStreamType = AUDIO_STREAM_MUSIC;
1317    mLeftVolume = 1.0;
1318    mRightVolume = 1.0;
1319    mPlaybackRatePermille = 1000;
1320    mSampleRateHz = 0;
1321    mMsecsPerFrame = 0;
1322    mAuxEffectId = 0;
1323    mSendLevel = 0.0;
1324    setMinBufferCount();
1325}
1326
1327MediaPlayerService::AudioOutput::~AudioOutput()
1328{
1329    close();
1330    delete mCallbackData;
1331}
1332
1333void MediaPlayerService::AudioOutput::setMinBufferCount()
1334{
1335    char value[PROPERTY_VALUE_MAX];
1336    if (property_get("ro.kernel.qemu", value, 0)) {
1337        mIsOnEmulator = true;
1338        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1339    }
1340}
1341
1342bool MediaPlayerService::AudioOutput::isOnEmulator()
1343{
1344    setMinBufferCount();
1345    return mIsOnEmulator;
1346}
1347
1348int MediaPlayerService::AudioOutput::getMinBufferCount()
1349{
1350    setMinBufferCount();
1351    return mMinBufferCount;
1352}
1353
1354ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1355{
1356    if (mTrack == 0) return NO_INIT;
1357    return mTrack->frameCount() * frameSize();
1358}
1359
1360ssize_t MediaPlayerService::AudioOutput::frameCount() const
1361{
1362    if (mTrack == 0) return NO_INIT;
1363    return mTrack->frameCount();
1364}
1365
1366ssize_t MediaPlayerService::AudioOutput::channelCount() const
1367{
1368    if (mTrack == 0) return NO_INIT;
1369    return mTrack->channelCount();
1370}
1371
1372ssize_t MediaPlayerService::AudioOutput::frameSize() const
1373{
1374    if (mTrack == 0) return NO_INIT;
1375    return mTrack->frameSize();
1376}
1377
1378uint32_t MediaPlayerService::AudioOutput::latency () const
1379{
1380    if (mTrack == 0) return 0;
1381    return mTrack->latency();
1382}
1383
1384float MediaPlayerService::AudioOutput::msecsPerFrame() const
1385{
1386    return mMsecsPerFrame;
1387}
1388
1389status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1390{
1391    if (mTrack == 0) return NO_INIT;
1392    return mTrack->getPosition(position);
1393}
1394
1395status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1396{
1397    if (mTrack == 0) return NO_INIT;
1398    *frameswritten = mBytesWritten / frameSize();
1399    return OK;
1400}
1401
1402status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1403{
1404    if (mTrack == 0) return NO_INIT;
1405    return mTrack->setParameters(keyValuePairs);
1406}
1407
1408String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1409{
1410    if (mTrack == 0) return String8::empty();
1411    return mTrack->getParameters(keys);
1412}
1413
1414void MediaPlayerService::AudioOutput::deleteRecycledTrack()
1415{
1416    ALOGV("deleteRecycledTrack");
1417
1418    if (mRecycledTrack != 0) {
1419
1420        if (mCallbackData != NULL) {
1421            mCallbackData->setOutput(NULL);
1422            mCallbackData->endTrackSwitch();
1423        }
1424
1425        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1426            mRecycledTrack->flush();
1427        }
1428        // An offloaded track isn't flushed because the STREAM_END is reported
1429        // slightly prematurely to allow time for the gapless track switch
1430        // but this means that if we decide not to recycle the track there
1431        // could be a small amount of residual data still playing. We leave
1432        // AudioFlinger to drain the track.
1433
1434        mRecycledTrack.clear();
1435        delete mCallbackData;
1436        mCallbackData = NULL;
1437        close();
1438    }
1439}
1440
1441status_t MediaPlayerService::AudioOutput::open(
1442        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1443        audio_format_t format, int bufferCount,
1444        AudioCallback cb, void *cookie,
1445        audio_output_flags_t flags,
1446        const audio_offload_info_t *offloadInfo)
1447{
1448    mCallback = cb;
1449    mCallbackCookie = cookie;
1450
1451    // Check argument "bufferCount" against the mininum buffer count
1452    if (bufferCount < mMinBufferCount) {
1453        ALOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1454        bufferCount = mMinBufferCount;
1455
1456    }
1457    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1458                format, bufferCount, mSessionId, flags);
1459    uint32_t afSampleRate;
1460    size_t afFrameCount;
1461    uint32_t frameCount;
1462
1463    // offloading is only supported in callback mode for now.
1464    // offloadInfo must be present if offload flag is set
1465    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1466            ((cb == NULL) || (offloadInfo == NULL))) {
1467        return BAD_VALUE;
1468    }
1469
1470    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1471        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1472    } else {
1473        uint32_t afSampleRate;
1474        size_t afFrameCount;
1475
1476        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1477            return NO_INIT;
1478        }
1479        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1480            return NO_INIT;
1481        }
1482
1483        frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1484    }
1485
1486    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1487        channelMask = audio_channel_out_mask_from_count(channelCount);
1488        if (0 == channelMask) {
1489            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1490            return NO_INIT;
1491        }
1492    }
1493
1494    // Check whether we can recycle the track
1495    bool reuse = false;
1496    bool bothOffloaded = false;
1497
1498    if (mRecycledTrack != 0) {
1499        // check whether we are switching between two offloaded tracks
1500        bothOffloaded = (flags & mRecycledTrack->getFlags()
1501                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1502
1503        // check if the existing track can be reused as-is, or if a new track needs to be created.
1504        reuse = true;
1505
1506        if ((mCallbackData == NULL && mCallback != NULL) ||
1507                (mCallbackData != NULL && mCallback == NULL)) {
1508            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1509            ALOGV("can't chain callback and write");
1510            reuse = false;
1511        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1512                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1513            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1514                  mRecycledTrack->getSampleRate(), sampleRate,
1515                  mRecycledTrack->channelCount(), channelCount);
1516            reuse = false;
1517        } else if (flags != mFlags) {
1518            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1519            reuse = false;
1520        } else if (mRecycledTrack->format() != format) {
1521            reuse = false;
1522        }
1523    } else {
1524        ALOGV("no track available to recycle");
1525    }
1526
1527    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1528
1529    // If we can't recycle and both tracks are offloaded
1530    // we must close the previous output before opening a new one
1531    if (bothOffloaded && !reuse) {
1532        ALOGV("both offloaded and not recycling");
1533        deleteRecycledTrack();
1534    }
1535
1536    sp<AudioTrack> t;
1537    CallbackData *newcbd = NULL;
1538
1539    // We don't attempt to create a new track if we are recycling an
1540    // offloaded track. But, if we are recycling a non-offloaded or we
1541    // are switching where one is offloaded and one isn't then we create
1542    // the new track in advance so that we can read additional stream info
1543
1544    if (!(reuse && bothOffloaded)) {
1545        ALOGV("creating new AudioTrack");
1546
1547        if (mCallback != NULL) {
1548            newcbd = new CallbackData(this);
1549            t = new AudioTrack(
1550                    mStreamType,
1551                    sampleRate,
1552                    format,
1553                    channelMask,
1554                    frameCount,
1555                    flags,
1556                    CallbackWrapper,
1557                    newcbd,
1558                    0,  // notification frames
1559                    mSessionId,
1560                    AudioTrack::TRANSFER_CALLBACK,
1561                    offloadInfo,
1562                    mUid);
1563        } else {
1564            t = new AudioTrack(
1565                    mStreamType,
1566                    sampleRate,
1567                    format,
1568                    channelMask,
1569                    frameCount,
1570                    flags,
1571                    NULL, // callback
1572                    NULL, // user data
1573                    0, // notification frames
1574                    mSessionId,
1575                    AudioTrack::TRANSFER_DEFAULT,
1576                    NULL, // offload info
1577                    mUid);
1578        }
1579
1580        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1581            ALOGE("Unable to create audio track");
1582            delete newcbd;
1583            return NO_INIT;
1584        }
1585    }
1586
1587    if (reuse) {
1588        CHECK(mRecycledTrack != NULL);
1589
1590        if (!bothOffloaded) {
1591            if (mRecycledTrack->frameCount() != t->frameCount()) {
1592                ALOGV("framecount differs: %u/%u frames",
1593                      mRecycledTrack->frameCount(), t->frameCount());
1594                reuse = false;
1595            }
1596        }
1597
1598        if (reuse) {
1599            ALOGV("chaining to next output and recycling track");
1600            close();
1601            mTrack = mRecycledTrack;
1602            mRecycledTrack.clear();
1603            if (mCallbackData != NULL) {
1604                mCallbackData->setOutput(this);
1605            }
1606            delete newcbd;
1607            return OK;
1608        }
1609    }
1610
1611    // we're not going to reuse the track, unblock and flush it
1612    // this was done earlier if both tracks are offloaded
1613    if (!bothOffloaded) {
1614        deleteRecycledTrack();
1615    }
1616
1617    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1618
1619    mCallbackData = newcbd;
1620    ALOGV("setVolume");
1621    t->setVolume(mLeftVolume, mRightVolume);
1622
1623    mSampleRateHz = sampleRate;
1624    mFlags = flags;
1625    mMsecsPerFrame = mPlaybackRatePermille / (float) sampleRate;
1626    uint32_t pos;
1627    if (t->getPosition(&pos) == OK) {
1628        mBytesWritten = uint64_t(pos) * t->frameSize();
1629    }
1630    mTrack = t;
1631
1632    status_t res = NO_ERROR;
1633    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1634        res = t->setSampleRate(mPlaybackRatePermille * mSampleRateHz / 1000);
1635        if (res == NO_ERROR) {
1636            t->setAuxEffectSendLevel(mSendLevel);
1637            res = t->attachAuxEffect(mAuxEffectId);
1638        }
1639    }
1640    ALOGV("open() DONE status %d", res);
1641    return res;
1642}
1643
1644status_t MediaPlayerService::AudioOutput::start()
1645{
1646    ALOGV("start");
1647    if (mCallbackData != NULL) {
1648        mCallbackData->endTrackSwitch();
1649    }
1650    if (mTrack != 0) {
1651        mTrack->setVolume(mLeftVolume, mRightVolume);
1652        mTrack->setAuxEffectSendLevel(mSendLevel);
1653        return mTrack->start();
1654    }
1655    return NO_INIT;
1656}
1657
1658void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1659    mNextOutput = nextOutput;
1660}
1661
1662
1663void MediaPlayerService::AudioOutput::switchToNextOutput() {
1664    ALOGV("switchToNextOutput");
1665    if (mNextOutput != NULL) {
1666        if (mCallbackData != NULL) {
1667            mCallbackData->beginTrackSwitch();
1668        }
1669        delete mNextOutput->mCallbackData;
1670        mNextOutput->mCallbackData = mCallbackData;
1671        mCallbackData = NULL;
1672        mNextOutput->mRecycledTrack = mTrack;
1673        mTrack.clear();
1674        mNextOutput->mSampleRateHz = mSampleRateHz;
1675        mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1676        mNextOutput->mBytesWritten = mBytesWritten;
1677        mNextOutput->mFlags = mFlags;
1678    }
1679}
1680
1681ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size)
1682{
1683    LOG_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1684
1685    //ALOGV("write(%p, %u)", buffer, size);
1686    if (mTrack != 0) {
1687        ssize_t ret = mTrack->write(buffer, size);
1688        mBytesWritten += ret;
1689        return ret;
1690    }
1691    return NO_INIT;
1692}
1693
1694void MediaPlayerService::AudioOutput::stop()
1695{
1696    ALOGV("stop");
1697    if (mTrack != 0) mTrack->stop();
1698}
1699
1700void MediaPlayerService::AudioOutput::flush()
1701{
1702    ALOGV("flush");
1703    if (mTrack != 0) mTrack->flush();
1704}
1705
1706void MediaPlayerService::AudioOutput::pause()
1707{
1708    ALOGV("pause");
1709    if (mTrack != 0) mTrack->pause();
1710}
1711
1712void MediaPlayerService::AudioOutput::close()
1713{
1714    ALOGV("close");
1715    mTrack.clear();
1716}
1717
1718void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1719{
1720    ALOGV("setVolume(%f, %f)", left, right);
1721    mLeftVolume = left;
1722    mRightVolume = right;
1723    if (mTrack != 0) {
1724        mTrack->setVolume(left, right);
1725    }
1726}
1727
1728status_t MediaPlayerService::AudioOutput::setPlaybackRatePermille(int32_t ratePermille)
1729{
1730    ALOGV("setPlaybackRatePermille(%d)", ratePermille);
1731    status_t res = NO_ERROR;
1732    if (mTrack != 0) {
1733        res = mTrack->setSampleRate(ratePermille * mSampleRateHz / 1000);
1734    } else {
1735        res = NO_INIT;
1736    }
1737    mPlaybackRatePermille = ratePermille;
1738    if (mSampleRateHz != 0) {
1739        mMsecsPerFrame = mPlaybackRatePermille / (float) mSampleRateHz;
1740    }
1741    return res;
1742}
1743
1744status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1745{
1746    ALOGV("setAuxEffectSendLevel(%f)", level);
1747    mSendLevel = level;
1748    if (mTrack != 0) {
1749        return mTrack->setAuxEffectSendLevel(level);
1750    }
1751    return NO_ERROR;
1752}
1753
1754status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1755{
1756    ALOGV("attachAuxEffect(%d)", effectId);
1757    mAuxEffectId = effectId;
1758    if (mTrack != 0) {
1759        return mTrack->attachAuxEffect(effectId);
1760    }
1761    return NO_ERROR;
1762}
1763
1764// static
1765void MediaPlayerService::AudioOutput::CallbackWrapper(
1766        int event, void *cookie, void *info) {
1767    //ALOGV("callbackwrapper");
1768    CallbackData *data = (CallbackData*)cookie;
1769    data->lock();
1770    AudioOutput *me = data->getOutput();
1771    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1772    if (me == NULL) {
1773        // no output set, likely because the track was scheduled to be reused
1774        // by another player, but the format turned out to be incompatible.
1775        data->unlock();
1776        if (buffer != NULL) {
1777            buffer->size = 0;
1778        }
1779        return;
1780    }
1781
1782    switch(event) {
1783    case AudioTrack::EVENT_MORE_DATA: {
1784        size_t actualSize = (*me->mCallback)(
1785                me, buffer->raw, buffer->size, me->mCallbackCookie,
1786                CB_EVENT_FILL_BUFFER);
1787
1788        if (actualSize == 0 && buffer->size > 0 && me->mNextOutput == NULL) {
1789            // We've reached EOS but the audio track is not stopped yet,
1790            // keep playing silence.
1791
1792            memset(buffer->raw, 0, buffer->size);
1793            actualSize = buffer->size;
1794        }
1795
1796        buffer->size = actualSize;
1797        } break;
1798
1799
1800    case AudioTrack::EVENT_STREAM_END:
1801        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
1802        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
1803                me->mCallbackCookie, CB_EVENT_STREAM_END);
1804        break;
1805
1806    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
1807        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
1808        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
1809                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
1810        break;
1811
1812    default:
1813        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
1814    }
1815
1816    data->unlock();
1817}
1818
1819int MediaPlayerService::AudioOutput::getSessionId() const
1820{
1821    return mSessionId;
1822}
1823
1824uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
1825{
1826    if (mTrack == 0) return 0;
1827    return mTrack->getSampleRate();
1828}
1829
1830#undef LOG_TAG
1831#define LOG_TAG "AudioCache"
1832MediaPlayerService::AudioCache::AudioCache(const sp<IMemoryHeap>& heap) :
1833    mHeap(heap), mChannelCount(0), mFrameCount(1024), mSampleRate(0), mSize(0),
1834    mError(NO_ERROR),  mCommandComplete(false)
1835{
1836}
1837
1838uint32_t MediaPlayerService::AudioCache::latency () const
1839{
1840    return 0;
1841}
1842
1843float MediaPlayerService::AudioCache::msecsPerFrame() const
1844{
1845    return mMsecsPerFrame;
1846}
1847
1848status_t MediaPlayerService::AudioCache::getPosition(uint32_t *position) const
1849{
1850    if (position == 0) return BAD_VALUE;
1851    *position = mSize;
1852    return NO_ERROR;
1853}
1854
1855status_t MediaPlayerService::AudioCache::getFramesWritten(uint32_t *written) const
1856{
1857    if (written == 0) return BAD_VALUE;
1858    *written = mSize;
1859    return NO_ERROR;
1860}
1861
1862////////////////////////////////////////////////////////////////////////////////
1863
1864struct CallbackThread : public Thread {
1865    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1866                   MediaPlayerBase::AudioSink::AudioCallback cb,
1867                   void *cookie);
1868
1869protected:
1870    virtual ~CallbackThread();
1871
1872    virtual bool threadLoop();
1873
1874private:
1875    wp<MediaPlayerBase::AudioSink> mSink;
1876    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1877    void *mCookie;
1878    void *mBuffer;
1879    size_t mBufferSize;
1880
1881    CallbackThread(const CallbackThread &);
1882    CallbackThread &operator=(const CallbackThread &);
1883};
1884
1885CallbackThread::CallbackThread(
1886        const wp<MediaPlayerBase::AudioSink> &sink,
1887        MediaPlayerBase::AudioSink::AudioCallback cb,
1888        void *cookie)
1889    : mSink(sink),
1890      mCallback(cb),
1891      mCookie(cookie),
1892      mBuffer(NULL),
1893      mBufferSize(0) {
1894}
1895
1896CallbackThread::~CallbackThread() {
1897    if (mBuffer) {
1898        free(mBuffer);
1899        mBuffer = NULL;
1900    }
1901}
1902
1903bool CallbackThread::threadLoop() {
1904    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1905    if (sink == NULL) {
1906        return false;
1907    }
1908
1909    if (mBuffer == NULL) {
1910        mBufferSize = sink->bufferSize();
1911        mBuffer = malloc(mBufferSize);
1912    }
1913
1914    size_t actualSize =
1915        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
1916                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
1917
1918    if (actualSize > 0) {
1919        sink->write(mBuffer, actualSize);
1920    }
1921
1922    return true;
1923}
1924
1925////////////////////////////////////////////////////////////////////////////////
1926
1927status_t MediaPlayerService::AudioCache::open(
1928        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1929        audio_format_t format, int bufferCount,
1930        AudioCallback cb, void *cookie, audio_output_flags_t flags,
1931        const audio_offload_info_t *offloadInfo)
1932{
1933    ALOGV("open(%u, %d, 0x%x, %d, %d)", sampleRate, channelCount, channelMask, format, bufferCount);
1934    if (mHeap->getHeapID() < 0) {
1935        return NO_INIT;
1936    }
1937
1938    mSampleRate = sampleRate;
1939    mChannelCount = (uint16_t)channelCount;
1940    mFormat = format;
1941    mMsecsPerFrame = 1.e3 / (float) sampleRate;
1942
1943    if (cb != NULL) {
1944        mCallbackThread = new CallbackThread(this, cb, cookie);
1945    }
1946    return NO_ERROR;
1947}
1948
1949status_t MediaPlayerService::AudioCache::start() {
1950    if (mCallbackThread != NULL) {
1951        mCallbackThread->run("AudioCache callback");
1952    }
1953    return NO_ERROR;
1954}
1955
1956void MediaPlayerService::AudioCache::stop() {
1957    if (mCallbackThread != NULL) {
1958        mCallbackThread->requestExitAndWait();
1959    }
1960}
1961
1962ssize_t MediaPlayerService::AudioCache::write(const void* buffer, size_t size)
1963{
1964    ALOGV("write(%p, %u)", buffer, size);
1965    if ((buffer == 0) || (size == 0)) return size;
1966
1967    uint8_t* p = static_cast<uint8_t*>(mHeap->getBase());
1968    if (p == NULL) return NO_INIT;
1969    p += mSize;
1970    ALOGV("memcpy(%p, %p, %u)", p, buffer, size);
1971    if (mSize + size > mHeap->getSize()) {
1972        ALOGE("Heap size overflow! req size: %d, max size: %d", (mSize + size), mHeap->getSize());
1973        size = mHeap->getSize() - mSize;
1974    }
1975    memcpy(p, buffer, size);
1976    mSize += size;
1977    return size;
1978}
1979
1980// call with lock held
1981status_t MediaPlayerService::AudioCache::wait()
1982{
1983    Mutex::Autolock lock(mLock);
1984    while (!mCommandComplete) {
1985        mSignal.wait(mLock);
1986    }
1987    mCommandComplete = false;
1988
1989    if (mError == NO_ERROR) {
1990        ALOGV("wait - success");
1991    } else {
1992        ALOGV("wait - error");
1993    }
1994    return mError;
1995}
1996
1997void MediaPlayerService::AudioCache::notify(
1998        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1999{
2000    ALOGV("notify(%p, %d, %d, %d)", cookie, msg, ext1, ext2);
2001    AudioCache* p = static_cast<AudioCache*>(cookie);
2002
2003    // ignore buffering messages
2004    switch (msg)
2005    {
2006    case MEDIA_ERROR:
2007        ALOGE("Error %d, %d occurred", ext1, ext2);
2008        p->mError = ext1;
2009        break;
2010    case MEDIA_PREPARED:
2011        ALOGV("prepared");
2012        break;
2013    case MEDIA_PLAYBACK_COMPLETE:
2014        ALOGV("playback complete");
2015        break;
2016    default:
2017        ALOGV("ignored");
2018        return;
2019    }
2020
2021    // wake up thread
2022    Mutex::Autolock lock(p->mLock);
2023    p->mCommandComplete = true;
2024    p->mSignal.signal();
2025}
2026
2027int MediaPlayerService::AudioCache::getSessionId() const
2028{
2029    return 0;
2030}
2031
2032uint32_t MediaPlayerService::AudioCache::getSampleRate() const
2033{
2034    if (mMsecsPerFrame == 0) {
2035        return 0;
2036    }
2037    return (uint32_t)(1.e3 / mMsecsPerFrame);
2038}
2039
2040void MediaPlayerService::addBatteryData(uint32_t params)
2041{
2042    Mutex::Autolock lock(mLock);
2043
2044    int32_t time = systemTime() / 1000000L;
2045
2046    // change audio output devices. This notification comes from AudioFlinger
2047    if ((params & kBatteryDataSpeakerOn)
2048            || (params & kBatteryDataOtherAudioDeviceOn)) {
2049
2050        int deviceOn[NUM_AUDIO_DEVICES];
2051        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2052            deviceOn[i] = 0;
2053        }
2054
2055        if ((params & kBatteryDataSpeakerOn)
2056                && (params & kBatteryDataOtherAudioDeviceOn)) {
2057            deviceOn[SPEAKER_AND_OTHER] = 1;
2058        } else if (params & kBatteryDataSpeakerOn) {
2059            deviceOn[SPEAKER] = 1;
2060        } else {
2061            deviceOn[OTHER_AUDIO_DEVICE] = 1;
2062        }
2063
2064        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2065            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
2066
2067                if (mBatteryAudio.refCount > 0) { // if playing audio
2068                    if (!deviceOn[i]) {
2069                        mBatteryAudio.lastTime[i] += time;
2070                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2071                        mBatteryAudio.lastTime[i] = 0;
2072                    } else {
2073                        mBatteryAudio.lastTime[i] = 0 - time;
2074                    }
2075                }
2076
2077                mBatteryAudio.deviceOn[i] = deviceOn[i];
2078            }
2079        }
2080        return;
2081    }
2082
2083    // an sudio stream is started
2084    if (params & kBatteryDataAudioFlingerStart) {
2085        // record the start time only if currently no other audio
2086        // is being played
2087        if (mBatteryAudio.refCount == 0) {
2088            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2089                if (mBatteryAudio.deviceOn[i]) {
2090                    mBatteryAudio.lastTime[i] -= time;
2091                }
2092            }
2093        }
2094
2095        mBatteryAudio.refCount ++;
2096        return;
2097
2098    } else if (params & kBatteryDataAudioFlingerStop) {
2099        if (mBatteryAudio.refCount <= 0) {
2100            ALOGW("Battery track warning: refCount is <= 0");
2101            return;
2102        }
2103
2104        // record the stop time only if currently this is the only
2105        // audio being played
2106        if (mBatteryAudio.refCount == 1) {
2107            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2108                if (mBatteryAudio.deviceOn[i]) {
2109                    mBatteryAudio.lastTime[i] += time;
2110                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2111                    mBatteryAudio.lastTime[i] = 0;
2112                }
2113            }
2114        }
2115
2116        mBatteryAudio.refCount --;
2117        return;
2118    }
2119
2120    int uid = IPCThreadState::self()->getCallingUid();
2121    if (uid == AID_MEDIA) {
2122        return;
2123    }
2124    int index = mBatteryData.indexOfKey(uid);
2125
2126    if (index < 0) { // create a new entry for this UID
2127        BatteryUsageInfo info;
2128        info.audioTotalTime = 0;
2129        info.videoTotalTime = 0;
2130        info.audioLastTime = 0;
2131        info.videoLastTime = 0;
2132        info.refCount = 0;
2133
2134        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2135            ALOGE("Battery track error: no memory for new app");
2136            return;
2137        }
2138    }
2139
2140    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2141
2142    if (params & kBatteryDataCodecStarted) {
2143        if (params & kBatteryDataTrackAudio) {
2144            info.audioLastTime -= time;
2145            info.refCount ++;
2146        }
2147        if (params & kBatteryDataTrackVideo) {
2148            info.videoLastTime -= time;
2149            info.refCount ++;
2150        }
2151    } else {
2152        if (info.refCount == 0) {
2153            ALOGW("Battery track warning: refCount is already 0");
2154            return;
2155        } else if (info.refCount < 0) {
2156            ALOGE("Battery track error: refCount < 0");
2157            mBatteryData.removeItem(uid);
2158            return;
2159        }
2160
2161        if (params & kBatteryDataTrackAudio) {
2162            info.audioLastTime += time;
2163            info.refCount --;
2164        }
2165        if (params & kBatteryDataTrackVideo) {
2166            info.videoLastTime += time;
2167            info.refCount --;
2168        }
2169
2170        // no stream is being played by this UID
2171        if (info.refCount == 0) {
2172            info.audioTotalTime += info.audioLastTime;
2173            info.audioLastTime = 0;
2174            info.videoTotalTime += info.videoLastTime;
2175            info.videoLastTime = 0;
2176        }
2177    }
2178}
2179
2180status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2181    Mutex::Autolock lock(mLock);
2182
2183    // audio output devices usage
2184    int32_t time = systemTime() / 1000000L; //in ms
2185    int32_t totalTime;
2186
2187    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2188        totalTime = mBatteryAudio.totalTime[i];
2189
2190        if (mBatteryAudio.deviceOn[i]
2191            && (mBatteryAudio.lastTime[i] != 0)) {
2192                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2193                totalTime += tmpTime;
2194        }
2195
2196        reply->writeInt32(totalTime);
2197        // reset the total time
2198        mBatteryAudio.totalTime[i] = 0;
2199   }
2200
2201    // codec usage
2202    BatteryUsageInfo info;
2203    int size = mBatteryData.size();
2204
2205    reply->writeInt32(size);
2206    int i = 0;
2207
2208    while (i < size) {
2209        info = mBatteryData.valueAt(i);
2210
2211        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2212        reply->writeInt32(info.audioTotalTime);
2213        reply->writeInt32(info.videoTotalTime);
2214
2215        info.audioTotalTime = 0;
2216        info.videoTotalTime = 0;
2217
2218        // remove the UID entry where no stream is being played
2219        if (info.refCount <= 0) {
2220            mBatteryData.removeItemsAt(i);
2221            size --;
2222            i --;
2223        }
2224        i++;
2225    }
2226    return NO_ERROR;
2227}
2228} // namespace android
2229