MediaPlayerService.cpp revision 719b46bdbafa226aed3163ed8e76a2cc4dff386b 
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/Timers.h>
46#include <utils/Vector.h>
47
48#include <media/IMediaHTTPService.h>
49#include <media/IRemoteDisplay.h>
50#include <media/IRemoteDisplayClient.h>
51#include <media/MediaPlayerInterface.h>
52#include <media/mediarecorder.h>
53#include <media/MediaMetadataRetrieverInterface.h>
54#include <media/Metadata.h>
55#include <media/AudioTrack.h>
56#include <media/MemoryLeakTrackUtil.h>
57#include <media/stagefright/MediaCodecList.h>
58#include <media/stagefright/MediaErrors.h>
59#include <media/stagefright/AudioPlayer.h>
60#include <media/stagefright/foundation/ADebug.h>
61#include <media/stagefright/foundation/ALooperRoster.h>
62#include <mediautils/BatteryNotifier.h>
63
64#include <system/audio.h>
65
66#include <private/android_filesystem_config.h>
67
68#include "ActivityManager.h"
69#include "MediaRecorderClient.h"
70#include "MediaPlayerService.h"
71#include "MetadataRetrieverClient.h"
72#include "MediaPlayerFactory.h"
73
74#include "TestPlayerStub.h"
75#include "StagefrightPlayer.h"
76#include "nuplayer/NuPlayerDriver.h"
77
78#include <OMX.h>
79
80#include "Crypto.h"
81#include "Drm.h"
82#include "HDCP.h"
83#include "HTTPBase.h"
84#include "RemoteDisplay.h"
85
86namespace {
87using android::media::Metadata;
88using android::status_t;
89using android::OK;
90using android::BAD_VALUE;
91using android::NOT_ENOUGH_DATA;
92using android::Parcel;
93
94// Max number of entries in the filter.
95const int kMaxFilterSize = 64;  // I pulled that out of thin air.
96
97// FIXME: Move all the metadata related function in the Metadata.cpp
98
99
100// Unmarshall a filter from a Parcel.
101// Filter format in a parcel:
102//
103//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
104// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
105// |                       number of entries (n)                   |
106// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
107// |                       metadata type 1                         |
108// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
109// |                       metadata type 2                         |
110// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
111//  ....
112// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
113// |                       metadata type n                         |
114// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
115//
116// @param p Parcel that should start with a filter.
117// @param[out] filter On exit contains the list of metadata type to be
118//                    filtered.
119// @param[out] status On exit contains the status code to be returned.
120// @return true if the parcel starts with a valid filter.
121bool unmarshallFilter(const Parcel& p,
122                      Metadata::Filter *filter,
123                      status_t *status)
124{
125    int32_t val;
126    if (p.readInt32(&val) != OK)
127    {
128        ALOGE("Failed to read filter's length");
129        *status = NOT_ENOUGH_DATA;
130        return false;
131    }
132
133    if( val > kMaxFilterSize || val < 0)
134    {
135        ALOGE("Invalid filter len %d", val);
136        *status = BAD_VALUE;
137        return false;
138    }
139
140    const size_t num = val;
141
142    filter->clear();
143    filter->setCapacity(num);
144
145    size_t size = num * sizeof(Metadata::Type);
146
147
148    if (p.dataAvail() < size)
149    {
150        ALOGE("Filter too short expected %d but got %d", size, p.dataAvail());
151        *status = NOT_ENOUGH_DATA;
152        return false;
153    }
154
155    const Metadata::Type *data =
156            static_cast<const Metadata::Type*>(p.readInplace(size));
157
158    if (NULL == data)
159    {
160        ALOGE("Filter had no data");
161        *status = BAD_VALUE;
162        return false;
163    }
164
165    // TODO: The stl impl of vector would be more efficient here
166    // because it degenerates into a memcpy on pod types. Try to
167    // replace later or use stl::set.
168    for (size_t i = 0; i < num; ++i)
169    {
170        filter->add(*data);
171        ++data;
172    }
173    *status = OK;
174    return true;
175}
176
177// @param filter Of metadata type.
178// @param val To be searched.
179// @return true if a match was found.
180bool findMetadata(const Metadata::Filter& filter, const int32_t val)
181{
182    // Deal with empty and ANY right away
183    if (filter.isEmpty()) return false;
184    if (filter[0] == Metadata::kAny) return true;
185
186    return filter.indexOf(val) >= 0;
187}
188
189}  // anonymous namespace
190
191
192namespace {
193using android::Parcel;
194using android::String16;
195
196// marshalling tag indicating flattened utf16 tags
197// keep in sync with frameworks/base/media/java/android/media/AudioAttributes.java
198const int32_t kAudioAttributesMarshallTagFlattenTags = 1;
199
200// Audio attributes format in a parcel:
201//
202//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
203// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
204// |                       usage                                   |
205// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
206// |                       content_type                            |
207// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
208// |                       source                                  |
209// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
210// |                       flags                                   |
211// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
212// |                       kAudioAttributesMarshallTagFlattenTags  | // ignore tags if not found
213// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
214// |                       flattened tags in UTF16                 |
215// |                         ...                                   |
216// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
217//
218// @param p Parcel that contains audio attributes.
219// @param[out] attributes On exit points to an initialized audio_attributes_t structure
220// @param[out] status On exit contains the status code to be returned.
221void unmarshallAudioAttributes(const Parcel& parcel, audio_attributes_t *attributes)
222{
223    attributes->usage = (audio_usage_t) parcel.readInt32();
224    attributes->content_type = (audio_content_type_t) parcel.readInt32();
225    attributes->source = (audio_source_t) parcel.readInt32();
226    attributes->flags = (audio_flags_mask_t) parcel.readInt32();
227    const bool hasFlattenedTag = (parcel.readInt32() == kAudioAttributesMarshallTagFlattenTags);
228    if (hasFlattenedTag) {
229        // the tags are UTF16, convert to UTF8
230        String16 tags = parcel.readString16();
231        ssize_t realTagSize = utf16_to_utf8_length(tags.string(), tags.size());
232        if (realTagSize <= 0) {
233            strcpy(attributes->tags, "");
234        } else {
235            // copy the flattened string into the attributes as the destination for the conversion:
236            // copying array size -1, array for tags was calloc'd, no need to NULL-terminate it
237            size_t tagSize = realTagSize > AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 ?
238                    AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 : realTagSize;
239            utf16_to_utf8(tags.string(), tagSize, attributes->tags);
240        }
241    } else {
242        ALOGE("unmarshallAudioAttributes() received unflattened tags, ignoring tag values");
243        strcpy(attributes->tags, "");
244    }
245}
246} // anonymous namespace
247
248
249namespace android {
250
251extern ALooperRoster gLooperRoster;
252
253
254static bool checkPermission(const char* permissionString) {
255#ifndef HAVE_ANDROID_OS
256    return true;
257#endif
258    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
259    bool ok = checkCallingPermission(String16(permissionString));
260    if (!ok) ALOGE("Request requires %s", permissionString);
261    return ok;
262}
263
264// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
265/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
266/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
267
268void MediaPlayerService::instantiate() {
269    defaultServiceManager()->addService(
270            String16("media.player"), new MediaPlayerService());
271}
272
273MediaPlayerService::MediaPlayerService()
274{
275    ALOGV("MediaPlayerService created");
276    mNextConnId = 1;
277
278    mBatteryAudio.refCount = 0;
279    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
280        mBatteryAudio.deviceOn[i] = 0;
281        mBatteryAudio.lastTime[i] = 0;
282        mBatteryAudio.totalTime[i] = 0;
283    }
284    // speaker is on by default
285    mBatteryAudio.deviceOn[SPEAKER] = 1;
286
287    // reset battery stats
288    // if the mediaserver has crashed, battery stats could be left
289    // in bad state, reset the state upon service start.
290    BatteryNotifier& notifier(BatteryNotifier::getInstance());
291    notifier.noteResetVideo();
292    notifier.noteResetAudio();
293
294    MediaPlayerFactory::registerBuiltinFactories();
295}
296
297MediaPlayerService::~MediaPlayerService()
298{
299    ALOGV("MediaPlayerService destroyed");
300}
301
302sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(const String16 &opPackageName)
303{
304    pid_t pid = IPCThreadState::self()->getCallingPid();
305    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid, opPackageName);
306    wp<MediaRecorderClient> w = recorder;
307    Mutex::Autolock lock(mLock);
308    mMediaRecorderClients.add(w);
309    ALOGV("Create new media recorder client from pid %d", pid);
310    return recorder;
311}
312
313void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
314{
315    Mutex::Autolock lock(mLock);
316    mMediaRecorderClients.remove(client);
317    ALOGV("Delete media recorder client");
318}
319
320sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
321{
322    pid_t pid = IPCThreadState::self()->getCallingPid();
323    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
324    ALOGV("Create new media retriever from pid %d", pid);
325    return retriever;
326}
327
328sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
329        int audioSessionId)
330{
331    pid_t pid = IPCThreadState::self()->getCallingPid();
332    int32_t connId = android_atomic_inc(&mNextConnId);
333
334    sp<Client> c = new Client(
335            this, pid, connId, client, audioSessionId,
336            IPCThreadState::self()->getCallingUid());
337
338    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
339         IPCThreadState::self()->getCallingUid());
340
341    wp<Client> w = c;
342    {
343        Mutex::Autolock lock(mLock);
344        mClients.add(w);
345    }
346    return c;
347}
348
349sp<IMediaCodecList> MediaPlayerService::getCodecList() const {
350    return MediaCodecList::getLocalInstance();
351}
352
353sp<IOMX> MediaPlayerService::getOMX() {
354    Mutex::Autolock autoLock(mLock);
355
356    if (mOMX.get() == NULL) {
357        mOMX = new OMX;
358    }
359
360    return mOMX;
361}
362
363sp<ICrypto> MediaPlayerService::makeCrypto() {
364    return new Crypto;
365}
366
367sp<IDrm> MediaPlayerService::makeDrm() {
368    return new Drm;
369}
370
371sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
372    return new HDCP(createEncryptionModule);
373}
374
375sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
376        const String16 &opPackageName,
377        const sp<IRemoteDisplayClient>& client, const String8& iface) {
378    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
379        return NULL;
380    }
381
382    return new RemoteDisplay(opPackageName, client, iface.string());
383}
384
385status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
386{
387    const size_t SIZE = 256;
388    char buffer[SIZE];
389    String8 result;
390
391    result.append(" AudioOutput\n");
392    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
393            mStreamType, mLeftVolume, mRightVolume);
394    result.append(buffer);
395    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
396            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
397    result.append(buffer);
398    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
399            mAuxEffectId, mSendLevel);
400    result.append(buffer);
401
402    ::write(fd, result.string(), result.size());
403    if (mTrack != 0) {
404        mTrack->dump(fd, args);
405    }
406    return NO_ERROR;
407}
408
409status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args)
410{
411    const size_t SIZE = 256;
412    char buffer[SIZE];
413    String8 result;
414    result.append(" Client\n");
415    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
416            mPid, mConnId, mStatus, mLoop?"true": "false");
417    result.append(buffer);
418    write(fd, result.string(), result.size());
419    if (mPlayer != NULL) {
420        mPlayer->dump(fd, args);
421    }
422    if (mAudioOutput != 0) {
423        mAudioOutput->dump(fd, args);
424    }
425    write(fd, "\n", 1);
426    return NO_ERROR;
427}
428
429/**
430 * The only arguments this understands right now are -c, -von and -voff,
431 * which are parsed by ALooperRoster::dump()
432 */
433status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
434{
435    const size_t SIZE = 256;
436    char buffer[SIZE];
437    String8 result;
438    SortedVector< sp<Client> > clients; //to serialise the mutex unlock & client destruction.
439    SortedVector< sp<MediaRecorderClient> > mediaRecorderClients;
440
441    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
442        snprintf(buffer, SIZE, "Permission Denial: "
443                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
444                IPCThreadState::self()->getCallingPid(),
445                IPCThreadState::self()->getCallingUid());
446        result.append(buffer);
447    } else {
448        Mutex::Autolock lock(mLock);
449        for (int i = 0, n = mClients.size(); i < n; ++i) {
450            sp<Client> c = mClients[i].promote();
451            if (c != 0) c->dump(fd, args);
452            clients.add(c);
453        }
454        if (mMediaRecorderClients.size() == 0) {
455                result.append(" No media recorder client\n\n");
456        } else {
457            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
458                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
459                if (c != 0) {
460                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
461                    result.append(buffer);
462                    write(fd, result.string(), result.size());
463                    result = "\n";
464                    c->dump(fd, args);
465                    mediaRecorderClients.add(c);
466                }
467            }
468        }
469
470        result.append(" Files opened and/or mapped:\n");
471        snprintf(buffer, SIZE, "/proc/%d/maps", getpid());
472        FILE *f = fopen(buffer, "r");
473        if (f) {
474            while (!feof(f)) {
475                fgets(buffer, SIZE, f);
476                if (strstr(buffer, " /storage/") ||
477                    strstr(buffer, " /system/sounds/") ||
478                    strstr(buffer, " /data/") ||
479                    strstr(buffer, " /system/media/")) {
480                    result.append("  ");
481                    result.append(buffer);
482                }
483            }
484            fclose(f);
485        } else {
486            result.append("couldn't open ");
487            result.append(buffer);
488            result.append("\n");
489        }
490
491        snprintf(buffer, SIZE, "/proc/%d/fd", getpid());
492        DIR *d = opendir(buffer);
493        if (d) {
494            struct dirent *ent;
495            while((ent = readdir(d)) != NULL) {
496                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
497                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", getpid(), ent->d_name);
498                    struct stat s;
499                    if (lstat(buffer, &s) == 0) {
500                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
501                            char linkto[256];
502                            int len = readlink(buffer, linkto, sizeof(linkto));
503                            if(len > 0) {
504                                if(len > 255) {
505                                    linkto[252] = '.';
506                                    linkto[253] = '.';
507                                    linkto[254] = '.';
508                                    linkto[255] = 0;
509                                } else {
510                                    linkto[len] = 0;
511                                }
512                                if (strstr(linkto, "/storage/") == linkto ||
513                                    strstr(linkto, "/system/sounds/") == linkto ||
514                                    strstr(linkto, "/data/") == linkto ||
515                                    strstr(linkto, "/system/media/") == linkto) {
516                                    result.append("  ");
517                                    result.append(buffer);
518                                    result.append(" -> ");
519                                    result.append(linkto);
520                                    result.append("\n");
521                                }
522                            }
523                        } else {
524                            result.append("  unexpected type for ");
525                            result.append(buffer);
526                            result.append("\n");
527                        }
528                    }
529                }
530            }
531            closedir(d);
532        } else {
533            result.append("couldn't open ");
534            result.append(buffer);
535            result.append("\n");
536        }
537
538        gLooperRoster.dump(fd, args);
539
540        bool dumpMem = false;
541        for (size_t i = 0; i < args.size(); i++) {
542            if (args[i] == String16("-m")) {
543                dumpMem = true;
544            }
545        }
546        if (dumpMem) {
547            dumpMemoryAddresses(fd);
548        }
549    }
550    write(fd, result.string(), result.size());
551    return NO_ERROR;
552}
553
554void MediaPlayerService::removeClient(wp<Client> client)
555{
556    Mutex::Autolock lock(mLock);
557    mClients.remove(client);
558}
559
560MediaPlayerService::Client::Client(
561        const sp<MediaPlayerService>& service, pid_t pid,
562        int32_t connId, const sp<IMediaPlayerClient>& client,
563        int audioSessionId, uid_t uid)
564{
565    ALOGV("Client(%d) constructor", connId);
566    mPid = pid;
567    mConnId = connId;
568    mService = service;
569    mClient = client;
570    mLoop = false;
571    mStatus = NO_INIT;
572    mAudioSessionId = audioSessionId;
573    mUID = uid;
574    mRetransmitEndpointValid = false;
575    mAudioAttributes = NULL;
576
577#if CALLBACK_ANTAGONIZER
578    ALOGD("create Antagonizer");
579    mAntagonizer = new Antagonizer(notify, this);
580#endif
581}
582
583MediaPlayerService::Client::~Client()
584{
585    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
586    mAudioOutput.clear();
587    wp<Client> client(this);
588    disconnect();
589    mService->removeClient(client);
590    if (mAudioAttributes != NULL) {
591        free(mAudioAttributes);
592    }
593}
594
595void MediaPlayerService::Client::disconnect()
596{
597    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
598    // grab local reference and clear main reference to prevent future
599    // access to object
600    sp<MediaPlayerBase> p;
601    {
602        Mutex::Autolock l(mLock);
603        p = mPlayer;
604        mClient.clear();
605    }
606
607    mPlayer.clear();
608
609    // clear the notification to prevent callbacks to dead client
610    // and reset the player. We assume the player will serialize
611    // access to itself if necessary.
612    if (p != 0) {
613        p->setNotifyCallback(0, 0);
614#if CALLBACK_ANTAGONIZER
615        ALOGD("kill Antagonizer");
616        mAntagonizer->kill();
617#endif
618        p->reset();
619    }
620
621    disconnectNativeWindow();
622
623    IPCThreadState::self()->flushCommands();
624}
625
626sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
627{
628    // determine if we have the right player type
629    sp<MediaPlayerBase> p = mPlayer;
630    if ((p != NULL) && (p->playerType() != playerType)) {
631        ALOGV("delete player");
632        p.clear();
633    }
634    if (p == NULL) {
635        p = MediaPlayerFactory::createPlayer(playerType, this, notify);
636    }
637
638    if (p != NULL) {
639        p->setUID(mUID);
640    }
641
642    return p;
643}
644
645sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
646        player_type playerType)
647{
648    ALOGV("player type = %d", playerType);
649
650    // create the right type of player
651    sp<MediaPlayerBase> p = createPlayer(playerType);
652    if (p == NULL) {
653        return p;
654    }
655
656    if (!p->hardwareOutput()) {
657        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
658                mPid, mAudioAttributes);
659        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
660    }
661
662    return p;
663}
664
665void MediaPlayerService::Client::setDataSource_post(
666        const sp<MediaPlayerBase>& p,
667        status_t status)
668{
669    ALOGV(" setDataSource");
670    mStatus = status;
671    if (mStatus != OK) {
672        ALOGE("  error: %d", mStatus);
673        return;
674    }
675
676    // Set the re-transmission endpoint if one was chosen.
677    if (mRetransmitEndpointValid) {
678        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
679        if (mStatus != NO_ERROR) {
680            ALOGE("setRetransmitEndpoint error: %d", mStatus);
681        }
682    }
683
684    if (mStatus == OK) {
685        mPlayer = p;
686    }
687}
688
689status_t MediaPlayerService::Client::setDataSource(
690        const sp<IMediaHTTPService> &httpService,
691        const char *url,
692        const KeyedVector<String8, String8> *headers)
693{
694    ALOGV("setDataSource(%s)", url);
695    if (url == NULL)
696        return UNKNOWN_ERROR;
697
698    if ((strncmp(url, "http://", 7) == 0) ||
699        (strncmp(url, "https://", 8) == 0) ||
700        (strncmp(url, "rtsp://", 7) == 0)) {
701        if (!checkPermission("android.permission.INTERNET")) {
702            return PERMISSION_DENIED;
703        }
704    }
705
706    if (strncmp(url, "content://", 10) == 0) {
707        // get a filedescriptor for the content Uri and
708        // pass it to the setDataSource(fd) method
709
710        String16 url16(url);
711        int fd = android::openContentProviderFile(url16);
712        if (fd < 0)
713        {
714            ALOGE("Couldn't open fd for %s", url);
715            return UNKNOWN_ERROR;
716        }
717        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
718        close(fd);
719        return mStatus;
720    } else {
721        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
722        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
723        if (p == NULL) {
724            return NO_INIT;
725        }
726
727        setDataSource_post(p, p->setDataSource(httpService, url, headers));
728        return mStatus;
729    }
730}
731
732status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
733{
734    ALOGV("setDataSource fd=%d, offset=%lld, length=%lld", fd, offset, length);
735    struct stat sb;
736    int ret = fstat(fd, &sb);
737    if (ret != 0) {
738        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
739        return UNKNOWN_ERROR;
740    }
741
742    ALOGV("st_dev  = %llu", static_cast<uint64_t>(sb.st_dev));
743    ALOGV("st_mode = %u", sb.st_mode);
744    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
745    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
746    ALOGV("st_size = %llu", sb.st_size);
747
748    if (offset >= sb.st_size) {
749        ALOGE("offset error");
750        ::close(fd);
751        return UNKNOWN_ERROR;
752    }
753    if (offset + length > sb.st_size) {
754        length = sb.st_size - offset;
755        ALOGV("calculated length = %lld", length);
756    }
757
758    player_type playerType = MediaPlayerFactory::getPlayerType(this,
759                                                               fd,
760                                                               offset,
761                                                               length);
762    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
763    if (p == NULL) {
764        return NO_INIT;
765    }
766
767    // now set data source
768    setDataSource_post(p, p->setDataSource(fd, offset, length));
769    return mStatus;
770}
771
772status_t MediaPlayerService::Client::setDataSource(
773        const sp<IStreamSource> &source) {
774    // create the right type of player
775    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
776    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
777    if (p == NULL) {
778        return NO_INIT;
779    }
780
781    // now set data source
782    setDataSource_post(p, p->setDataSource(source));
783    return mStatus;
784}
785
786status_t MediaPlayerService::Client::setDataSource(
787        const sp<IDataSource> &source) {
788    sp<DataSource> dataSource = DataSource::CreateFromIDataSource(source);
789    player_type playerType = MediaPlayerFactory::getPlayerType(this, dataSource);
790    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
791    if (p == NULL) {
792        return NO_INIT;
793    }
794    // now set data source
795    setDataSource_post(p, p->setDataSource(dataSource));
796    return mStatus;
797}
798
799void MediaPlayerService::Client::disconnectNativeWindow() {
800    if (mConnectedWindow != NULL) {
801        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
802                NATIVE_WINDOW_API_MEDIA);
803
804        if (err != OK) {
805            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
806                    strerror(-err), err);
807        }
808    }
809    mConnectedWindow.clear();
810}
811
812status_t MediaPlayerService::Client::setVideoSurfaceTexture(
813        const sp<IGraphicBufferProducer>& bufferProducer)
814{
815    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
816    sp<MediaPlayerBase> p = getPlayer();
817    if (p == 0) return UNKNOWN_ERROR;
818
819    sp<IBinder> binder(IInterface::asBinder(bufferProducer));
820    if (mConnectedWindowBinder == binder) {
821        return OK;
822    }
823
824    sp<ANativeWindow> anw;
825    if (bufferProducer != NULL) {
826        anw = new Surface(bufferProducer, true /* controlledByApp */);
827        status_t err = native_window_api_connect(anw.get(),
828                NATIVE_WINDOW_API_MEDIA);
829
830        if (err != OK) {
831            ALOGE("setVideoSurfaceTexture failed: %d", err);
832            // Note that we must do the reset before disconnecting from the ANW.
833            // Otherwise queue/dequeue calls could be made on the disconnected
834            // ANW, which may result in errors.
835            reset();
836
837            disconnectNativeWindow();
838
839            return err;
840        }
841    }
842
843    // Note that we must set the player's new GraphicBufferProducer before
844    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
845    // on the disconnected ANW, which may result in errors.
846    status_t err = p->setVideoSurfaceTexture(bufferProducer);
847
848    disconnectNativeWindow();
849
850    mConnectedWindow = anw;
851
852    if (err == OK) {
853        mConnectedWindowBinder = binder;
854    } else {
855        disconnectNativeWindow();
856    }
857
858    return err;
859}
860
861status_t MediaPlayerService::Client::invoke(const Parcel& request,
862                                            Parcel *reply)
863{
864    sp<MediaPlayerBase> p = getPlayer();
865    if (p == NULL) return UNKNOWN_ERROR;
866    return p->invoke(request, reply);
867}
868
869// This call doesn't need to access the native player.
870status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
871{
872    status_t status;
873    media::Metadata::Filter allow, drop;
874
875    if (unmarshallFilter(filter, &allow, &status) &&
876        unmarshallFilter(filter, &drop, &status)) {
877        Mutex::Autolock lock(mLock);
878
879        mMetadataAllow = allow;
880        mMetadataDrop = drop;
881    }
882    return status;
883}
884
885status_t MediaPlayerService::Client::getMetadata(
886        bool update_only, bool /*apply_filter*/, Parcel *reply)
887{
888    sp<MediaPlayerBase> player = getPlayer();
889    if (player == 0) return UNKNOWN_ERROR;
890
891    status_t status;
892    // Placeholder for the return code, updated by the caller.
893    reply->writeInt32(-1);
894
895    media::Metadata::Filter ids;
896
897    // We don't block notifications while we fetch the data. We clear
898    // mMetadataUpdated first so we don't lose notifications happening
899    // during the rest of this call.
900    {
901        Mutex::Autolock lock(mLock);
902        if (update_only) {
903            ids = mMetadataUpdated;
904        }
905        mMetadataUpdated.clear();
906    }
907
908    media::Metadata metadata(reply);
909
910    metadata.appendHeader();
911    status = player->getMetadata(ids, reply);
912
913    if (status != OK) {
914        metadata.resetParcel();
915        ALOGE("getMetadata failed %d", status);
916        return status;
917    }
918
919    // FIXME: Implement filtering on the result. Not critical since
920    // filtering takes place on the update notifications already. This
921    // would be when all the metadata are fetch and a filter is set.
922
923    // Everything is fine, update the metadata length.
924    metadata.updateLength();
925    return OK;
926}
927
928status_t MediaPlayerService::Client::prepareAsync()
929{
930    ALOGV("[%d] prepareAsync", mConnId);
931    sp<MediaPlayerBase> p = getPlayer();
932    if (p == 0) return UNKNOWN_ERROR;
933    status_t ret = p->prepareAsync();
934#if CALLBACK_ANTAGONIZER
935    ALOGD("start Antagonizer");
936    if (ret == NO_ERROR) mAntagonizer->start();
937#endif
938    return ret;
939}
940
941status_t MediaPlayerService::Client::start()
942{
943    ALOGV("[%d] start", mConnId);
944    sp<MediaPlayerBase> p = getPlayer();
945    if (p == 0) return UNKNOWN_ERROR;
946    p->setLooping(mLoop);
947    return p->start();
948}
949
950status_t MediaPlayerService::Client::stop()
951{
952    ALOGV("[%d] stop", mConnId);
953    sp<MediaPlayerBase> p = getPlayer();
954    if (p == 0) return UNKNOWN_ERROR;
955    return p->stop();
956}
957
958status_t MediaPlayerService::Client::pause()
959{
960    ALOGV("[%d] pause", mConnId);
961    sp<MediaPlayerBase> p = getPlayer();
962    if (p == 0) return UNKNOWN_ERROR;
963    return p->pause();
964}
965
966status_t MediaPlayerService::Client::isPlaying(bool* state)
967{
968    *state = false;
969    sp<MediaPlayerBase> p = getPlayer();
970    if (p == 0) return UNKNOWN_ERROR;
971    *state = p->isPlaying();
972    ALOGV("[%d] isPlaying: %d", mConnId, *state);
973    return NO_ERROR;
974}
975
976status_t MediaPlayerService::Client::setPlaybackSettings(const AudioPlaybackRate& rate)
977{
978    ALOGV("[%d] setPlaybackSettings(%f, %f, %d, %d)",
979            mConnId, rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
980    sp<MediaPlayerBase> p = getPlayer();
981    if (p == 0) return UNKNOWN_ERROR;
982    return p->setPlaybackSettings(rate);
983}
984
985status_t MediaPlayerService::Client::getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */)
986{
987    sp<MediaPlayerBase> p = getPlayer();
988    if (p == 0) return UNKNOWN_ERROR;
989    status_t ret = p->getPlaybackSettings(rate);
990    if (ret == NO_ERROR) {
991        ALOGV("[%d] getPlaybackSettings(%f, %f, %d, %d)",
992                mConnId, rate->mSpeed, rate->mPitch, rate->mFallbackMode, rate->mStretchMode);
993    } else {
994        ALOGV("[%d] getPlaybackSettings returned %d", mConnId, ret);
995    }
996    return ret;
997}
998
999status_t MediaPlayerService::Client::setSyncSettings(
1000        const AVSyncSettings& sync, float videoFpsHint)
1001{
1002    ALOGV("[%d] setSyncSettings(%u, %u, %f, %f)",
1003            mConnId, sync.mSource, sync.mAudioAdjustMode, sync.mTolerance, videoFpsHint);
1004    sp<MediaPlayerBase> p = getPlayer();
1005    if (p == 0) return UNKNOWN_ERROR;
1006    return p->setSyncSettings(sync, videoFpsHint);
1007}
1008
1009status_t MediaPlayerService::Client::getSyncSettings(
1010        AVSyncSettings* sync /* nonnull */, float* videoFps /* nonnull */)
1011{
1012    sp<MediaPlayerBase> p = getPlayer();
1013    if (p == 0) return UNKNOWN_ERROR;
1014    status_t ret = p->getSyncSettings(sync, videoFps);
1015    if (ret == NO_ERROR) {
1016        ALOGV("[%d] getSyncSettings(%u, %u, %f, %f)",
1017                mConnId, sync->mSource, sync->mAudioAdjustMode, sync->mTolerance, *videoFps);
1018    } else {
1019        ALOGV("[%d] getSyncSettings returned %d", mConnId, ret);
1020    }
1021    return ret;
1022}
1023
1024status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1025{
1026    ALOGV("getCurrentPosition");
1027    sp<MediaPlayerBase> p = getPlayer();
1028    if (p == 0) return UNKNOWN_ERROR;
1029    status_t ret = p->getCurrentPosition(msec);
1030    if (ret == NO_ERROR) {
1031        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1032    } else {
1033        ALOGE("getCurrentPosition returned %d", ret);
1034    }
1035    return ret;
1036}
1037
1038status_t MediaPlayerService::Client::getDuration(int *msec)
1039{
1040    ALOGV("getDuration");
1041    sp<MediaPlayerBase> p = getPlayer();
1042    if (p == 0) return UNKNOWN_ERROR;
1043    status_t ret = p->getDuration(msec);
1044    if (ret == NO_ERROR) {
1045        ALOGV("[%d] getDuration = %d", mConnId, *msec);
1046    } else {
1047        ALOGE("getDuration returned %d", ret);
1048    }
1049    return ret;
1050}
1051
1052status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1053    ALOGV("setNextPlayer");
1054    Mutex::Autolock l(mLock);
1055    sp<Client> c = static_cast<Client*>(player.get());
1056    mNextClient = c;
1057
1058    if (c != NULL) {
1059        if (mAudioOutput != NULL) {
1060            mAudioOutput->setNextOutput(c->mAudioOutput);
1061        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1062            ALOGE("no current audio output");
1063        }
1064
1065        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1066            mPlayer->setNextPlayer(mNextClient->getPlayer());
1067        }
1068    }
1069
1070    return OK;
1071}
1072
1073status_t MediaPlayerService::Client::seekTo(int msec)
1074{
1075    ALOGV("[%d] seekTo(%d)", mConnId, msec);
1076    sp<MediaPlayerBase> p = getPlayer();
1077    if (p == 0) return UNKNOWN_ERROR;
1078    return p->seekTo(msec);
1079}
1080
1081status_t MediaPlayerService::Client::reset()
1082{
1083    ALOGV("[%d] reset", mConnId);
1084    mRetransmitEndpointValid = false;
1085    sp<MediaPlayerBase> p = getPlayer();
1086    if (p == 0) return UNKNOWN_ERROR;
1087    return p->reset();
1088}
1089
1090status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1091{
1092    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1093    // TODO: for hardware output, call player instead
1094    Mutex::Autolock l(mLock);
1095    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1096    return NO_ERROR;
1097}
1098
1099status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1100{
1101    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1102    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1103    unmarshallAudioAttributes(parcel, mAudioAttributes);
1104
1105    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1106            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1107            mAudioAttributes->tags);
1108
1109    if (mAudioOutput != 0) {
1110        mAudioOutput->setAudioAttributes(mAudioAttributes);
1111    }
1112    return NO_ERROR;
1113}
1114
1115status_t MediaPlayerService::Client::setLooping(int loop)
1116{
1117    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1118    mLoop = loop;
1119    sp<MediaPlayerBase> p = getPlayer();
1120    if (p != 0) return p->setLooping(loop);
1121    return NO_ERROR;
1122}
1123
1124status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1125{
1126    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1127
1128    // for hardware output, call player instead
1129    sp<MediaPlayerBase> p = getPlayer();
1130    {
1131      Mutex::Autolock l(mLock);
1132      if (p != 0 && p->hardwareOutput()) {
1133          MediaPlayerHWInterface* hwp =
1134                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1135          return hwp->setVolume(leftVolume, rightVolume);
1136      } else {
1137          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1138          return NO_ERROR;
1139      }
1140    }
1141
1142    return NO_ERROR;
1143}
1144
1145status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1146{
1147    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1148    Mutex::Autolock l(mLock);
1149    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1150    return NO_ERROR;
1151}
1152
1153status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1154{
1155    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1156    Mutex::Autolock l(mLock);
1157    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1158    return NO_ERROR;
1159}
1160
1161status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1162    ALOGV("[%d] setParameter(%d)", mConnId, key);
1163    switch (key) {
1164    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1165    {
1166        Mutex::Autolock l(mLock);
1167        return setAudioAttributes_l(request);
1168    }
1169    default:
1170        sp<MediaPlayerBase> p = getPlayer();
1171        if (p == 0) { return UNKNOWN_ERROR; }
1172        return p->setParameter(key, request);
1173    }
1174}
1175
1176status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1177    ALOGV("[%d] getParameter(%d)", mConnId, key);
1178    sp<MediaPlayerBase> p = getPlayer();
1179    if (p == 0) return UNKNOWN_ERROR;
1180    return p->getParameter(key, reply);
1181}
1182
1183status_t MediaPlayerService::Client::setRetransmitEndpoint(
1184        const struct sockaddr_in* endpoint) {
1185
1186    if (NULL != endpoint) {
1187        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1188        uint16_t p = ntohs(endpoint->sin_port);
1189        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1190                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1191    } else {
1192        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1193    }
1194
1195    sp<MediaPlayerBase> p = getPlayer();
1196
1197    // Right now, the only valid time to set a retransmit endpoint is before
1198    // player selection has been made (since the presence or absence of a
1199    // retransmit endpoint is going to determine which player is selected during
1200    // setDataSource).
1201    if (p != 0) return INVALID_OPERATION;
1202
1203    if (NULL != endpoint) {
1204        mRetransmitEndpoint = *endpoint;
1205        mRetransmitEndpointValid = true;
1206    } else {
1207        mRetransmitEndpointValid = false;
1208    }
1209
1210    return NO_ERROR;
1211}
1212
1213status_t MediaPlayerService::Client::getRetransmitEndpoint(
1214        struct sockaddr_in* endpoint)
1215{
1216    if (NULL == endpoint)
1217        return BAD_VALUE;
1218
1219    sp<MediaPlayerBase> p = getPlayer();
1220
1221    if (p != NULL)
1222        return p->getRetransmitEndpoint(endpoint);
1223
1224    if (!mRetransmitEndpointValid)
1225        return NO_INIT;
1226
1227    *endpoint = mRetransmitEndpoint;
1228
1229    return NO_ERROR;
1230}
1231
1232void MediaPlayerService::Client::notify(
1233        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1234{
1235    Client* client = static_cast<Client*>(cookie);
1236    if (client == NULL) {
1237        return;
1238    }
1239
1240    sp<IMediaPlayerClient> c;
1241    {
1242        Mutex::Autolock l(client->mLock);
1243        c = client->mClient;
1244        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1245            if (client->mAudioOutput != NULL)
1246                client->mAudioOutput->switchToNextOutput();
1247            client->mNextClient->start();
1248            client->mNextClient->mClient->notify(MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1249        }
1250    }
1251
1252    if (MEDIA_INFO == msg &&
1253        MEDIA_INFO_METADATA_UPDATE == ext1) {
1254        const media::Metadata::Type metadata_type = ext2;
1255
1256        if(client->shouldDropMetadata(metadata_type)) {
1257            return;
1258        }
1259
1260        // Update the list of metadata that have changed. getMetadata
1261        // also access mMetadataUpdated and clears it.
1262        client->addNewMetadataUpdate(metadata_type);
1263    }
1264
1265    if (c != NULL) {
1266        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1267        c->notify(msg, ext1, ext2, obj);
1268    }
1269}
1270
1271
1272bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1273{
1274    Mutex::Autolock lock(mLock);
1275
1276    if (findMetadata(mMetadataDrop, code)) {
1277        return true;
1278    }
1279
1280    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1281        return false;
1282    } else {
1283        return true;
1284    }
1285}
1286
1287
1288void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1289    Mutex::Autolock lock(mLock);
1290    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1291        mMetadataUpdated.add(metadata_type);
1292    }
1293}
1294
1295#if CALLBACK_ANTAGONIZER
1296const int Antagonizer::interval = 10000; // 10 msecs
1297
1298Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1299    mExit(false), mActive(false), mClient(client), mCb(cb)
1300{
1301    createThread(callbackThread, this);
1302}
1303
1304void Antagonizer::kill()
1305{
1306    Mutex::Autolock _l(mLock);
1307    mActive = false;
1308    mExit = true;
1309    mCondition.wait(mLock);
1310}
1311
1312int Antagonizer::callbackThread(void* user)
1313{
1314    ALOGD("Antagonizer started");
1315    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1316    while (!p->mExit) {
1317        if (p->mActive) {
1318            ALOGV("send event");
1319            p->mCb(p->mClient, 0, 0, 0);
1320        }
1321        usleep(interval);
1322    }
1323    Mutex::Autolock _l(p->mLock);
1324    p->mCondition.signal();
1325    ALOGD("Antagonizer stopped");
1326    return 0;
1327}
1328#endif
1329
1330#undef LOG_TAG
1331#define LOG_TAG "AudioSink"
1332MediaPlayerService::AudioOutput::AudioOutput(int sessionId, int uid, int pid,
1333        const audio_attributes_t* attr)
1334    : mCallback(NULL),
1335      mCallbackCookie(NULL),
1336      mCallbackData(NULL),
1337      mBytesWritten(0),
1338      mSessionId(sessionId),
1339      mUid(uid),
1340      mPid(pid),
1341      mFlags(AUDIO_OUTPUT_FLAG_NONE) {
1342    ALOGV("AudioOutput(%d)", sessionId);
1343    mStreamType = AUDIO_STREAM_MUSIC;
1344    mLeftVolume = 1.0;
1345    mRightVolume = 1.0;
1346    mPlaybackRate = AUDIO_PLAYBACK_RATE_DEFAULT;
1347    mSampleRateHz = 0;
1348    mMsecsPerFrame = 0;
1349    mAuxEffectId = 0;
1350    mSendLevel = 0.0;
1351    setMinBufferCount();
1352    mAttributes = attr;
1353}
1354
1355MediaPlayerService::AudioOutput::~AudioOutput()
1356{
1357    close();
1358    delete mCallbackData;
1359}
1360
1361void MediaPlayerService::AudioOutput::setMinBufferCount()
1362{
1363    char value[PROPERTY_VALUE_MAX];
1364    if (property_get("ro.kernel.qemu", value, 0)) {
1365        mIsOnEmulator = true;
1366        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1367    }
1368}
1369
1370bool MediaPlayerService::AudioOutput::isOnEmulator()
1371{
1372    setMinBufferCount();
1373    return mIsOnEmulator;
1374}
1375
1376int MediaPlayerService::AudioOutput::getMinBufferCount()
1377{
1378    setMinBufferCount();
1379    return mMinBufferCount;
1380}
1381
1382ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1383{
1384    if (mTrack == 0) return NO_INIT;
1385    return mTrack->frameCount() * frameSize();
1386}
1387
1388ssize_t MediaPlayerService::AudioOutput::frameCount() const
1389{
1390    if (mTrack == 0) return NO_INIT;
1391    return mTrack->frameCount();
1392}
1393
1394ssize_t MediaPlayerService::AudioOutput::channelCount() const
1395{
1396    if (mTrack == 0) return NO_INIT;
1397    return mTrack->channelCount();
1398}
1399
1400ssize_t MediaPlayerService::AudioOutput::frameSize() const
1401{
1402    if (mTrack == 0) return NO_INIT;
1403    return mTrack->frameSize();
1404}
1405
1406uint32_t MediaPlayerService::AudioOutput::latency () const
1407{
1408    if (mTrack == 0) return 0;
1409    return mTrack->latency();
1410}
1411
1412float MediaPlayerService::AudioOutput::msecsPerFrame() const
1413{
1414    return mMsecsPerFrame;
1415}
1416
1417status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1418{
1419    if (mTrack == 0) return NO_INIT;
1420    return mTrack->getPosition(position);
1421}
1422
1423status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1424{
1425    if (mTrack == 0) return NO_INIT;
1426    return mTrack->getTimestamp(ts);
1427}
1428
1429status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1430{
1431    if (mTrack == 0) return NO_INIT;
1432    *frameswritten = mBytesWritten / frameSize();
1433    return OK;
1434}
1435
1436status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1437{
1438    if (mTrack == 0) return NO_INIT;
1439    return mTrack->setParameters(keyValuePairs);
1440}
1441
1442String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1443{
1444    if (mTrack == 0) return String8::empty();
1445    return mTrack->getParameters(keys);
1446}
1447
1448void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1449    mAttributes = attributes;
1450}
1451
1452void MediaPlayerService::AudioOutput::deleteRecycledTrack()
1453{
1454    ALOGV("deleteRecycledTrack");
1455
1456    if (mRecycledTrack != 0) {
1457
1458        if (mCallbackData != NULL) {
1459            mCallbackData->setOutput(NULL);
1460            mCallbackData->endTrackSwitch();
1461        }
1462
1463        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1464            mRecycledTrack->flush();
1465        }
1466        // An offloaded track isn't flushed because the STREAM_END is reported
1467        // slightly prematurely to allow time for the gapless track switch
1468        // but this means that if we decide not to recycle the track there
1469        // could be a small amount of residual data still playing. We leave
1470        // AudioFlinger to drain the track.
1471
1472        mRecycledTrack.clear();
1473        delete mCallbackData;
1474        mCallbackData = NULL;
1475        close();
1476    }
1477}
1478
1479status_t MediaPlayerService::AudioOutput::open(
1480        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1481        audio_format_t format, int bufferCount,
1482        AudioCallback cb, void *cookie,
1483        audio_output_flags_t flags,
1484        const audio_offload_info_t *offloadInfo,
1485        bool doNotReconnect)
1486{
1487    mCallback = cb;
1488    mCallbackCookie = cookie;
1489
1490    // Check argument "bufferCount" against the mininum buffer count
1491    if (bufferCount < mMinBufferCount) {
1492        ALOGD("bufferCount (%d) is too small and increased to %d", bufferCount, mMinBufferCount);
1493        bufferCount = mMinBufferCount;
1494
1495    }
1496    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1497                format, bufferCount, mSessionId, flags);
1498    size_t frameCount;
1499
1500    // offloading is only supported in callback mode for now.
1501    // offloadInfo must be present if offload flag is set
1502    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1503            ((cb == NULL) || (offloadInfo == NULL))) {
1504        return BAD_VALUE;
1505    }
1506
1507    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1508        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1509    } else {
1510        uint32_t afSampleRate;
1511        size_t afFrameCount;
1512
1513        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1514            return NO_INIT;
1515        }
1516        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1517            return NO_INIT;
1518        }
1519
1520        frameCount = (sampleRate*afFrameCount*bufferCount)/afSampleRate;
1521    }
1522
1523    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1524        channelMask = audio_channel_out_mask_from_count(channelCount);
1525        if (0 == channelMask) {
1526            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1527            return NO_INIT;
1528        }
1529    }
1530
1531    // Check whether we can recycle the track
1532    bool reuse = false;
1533    bool bothOffloaded = false;
1534
1535    if (mRecycledTrack != 0) {
1536        // check whether we are switching between two offloaded tracks
1537        bothOffloaded = (flags & mRecycledTrack->getFlags()
1538                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1539
1540        // check if the existing track can be reused as-is, or if a new track needs to be created.
1541        reuse = true;
1542
1543        if ((mCallbackData == NULL && mCallback != NULL) ||
1544                (mCallbackData != NULL && mCallback == NULL)) {
1545            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1546            ALOGV("can't chain callback and write");
1547            reuse = false;
1548        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1549                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1550            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1551                  mRecycledTrack->getSampleRate(), sampleRate,
1552                  mRecycledTrack->channelCount(), channelCount);
1553            reuse = false;
1554        } else if (flags != mFlags) {
1555            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1556            reuse = false;
1557        } else if (mRecycledTrack->format() != format) {
1558            reuse = false;
1559        }
1560    } else {
1561        ALOGV("no track available to recycle");
1562    }
1563
1564    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1565
1566    // If we can't recycle and both tracks are offloaded
1567    // we must close the previous output before opening a new one
1568    if (bothOffloaded && !reuse) {
1569        ALOGV("both offloaded and not recycling");
1570        deleteRecycledTrack();
1571    }
1572
1573    sp<AudioTrack> t;
1574    CallbackData *newcbd = NULL;
1575
1576    // We don't attempt to create a new track if we are recycling an
1577    // offloaded track. But, if we are recycling a non-offloaded or we
1578    // are switching where one is offloaded and one isn't then we create
1579    // the new track in advance so that we can read additional stream info
1580
1581    if (!(reuse && bothOffloaded)) {
1582        ALOGV("creating new AudioTrack");
1583
1584        if (mCallback != NULL) {
1585            newcbd = new CallbackData(this);
1586            t = new AudioTrack(
1587                    mStreamType,
1588                    sampleRate,
1589                    format,
1590                    channelMask,
1591                    frameCount,
1592                    flags,
1593                    CallbackWrapper,
1594                    newcbd,
1595                    0,  // notification frames
1596                    mSessionId,
1597                    AudioTrack::TRANSFER_CALLBACK,
1598                    offloadInfo,
1599                    mUid,
1600                    mPid,
1601                    mAttributes,
1602                    doNotReconnect);
1603        } else {
1604            t = new AudioTrack(
1605                    mStreamType,
1606                    sampleRate,
1607                    format,
1608                    channelMask,
1609                    frameCount,
1610                    flags,
1611                    NULL, // callback
1612                    NULL, // user data
1613                    0, // notification frames
1614                    mSessionId,
1615                    AudioTrack::TRANSFER_DEFAULT,
1616                    NULL, // offload info
1617                    mUid,
1618                    mPid,
1619                    mAttributes,
1620                    doNotReconnect);
1621        }
1622
1623        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1624            ALOGE("Unable to create audio track");
1625            delete newcbd;
1626            // t goes out of scope, so reference count drops to zero
1627            return NO_INIT;
1628        } else {
1629            // successful AudioTrack initialization implies a legacy stream type was generated
1630            // from the audio attributes
1631            mStreamType = t->streamType();
1632        }
1633    }
1634
1635    if (reuse) {
1636        CHECK(mRecycledTrack != NULL);
1637
1638        if (!bothOffloaded) {
1639            if (mRecycledTrack->frameCount() != t->frameCount()) {
1640                ALOGV("framecount differs: %u/%u frames",
1641                      mRecycledTrack->frameCount(), t->frameCount());
1642                reuse = false;
1643            }
1644        }
1645
1646        if (reuse) {
1647            ALOGV("chaining to next output and recycling track");
1648            close();
1649            mTrack = mRecycledTrack;
1650            mRecycledTrack.clear();
1651            if (mCallbackData != NULL) {
1652                mCallbackData->setOutput(this);
1653            }
1654            delete newcbd;
1655            return OK;
1656        }
1657    }
1658
1659    // we're not going to reuse the track, unblock and flush it
1660    // this was done earlier if both tracks are offloaded
1661    if (!bothOffloaded) {
1662        deleteRecycledTrack();
1663    }
1664
1665    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1666
1667    mCallbackData = newcbd;
1668    ALOGV("setVolume");
1669    t->setVolume(mLeftVolume, mRightVolume);
1670
1671    mSampleRateHz = sampleRate;
1672    mFlags = flags;
1673    mMsecsPerFrame = 1E3f / (mPlaybackRate.mSpeed * sampleRate);
1674    uint32_t pos;
1675    if (t->getPosition(&pos) == OK) {
1676        mBytesWritten = uint64_t(pos) * t->frameSize();
1677    }
1678    mTrack = t;
1679
1680    status_t res = NO_ERROR;
1681    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1682        res = t->setPlaybackRate(mPlaybackRate);
1683        if (res == NO_ERROR) {
1684            t->setAuxEffectSendLevel(mSendLevel);
1685            res = t->attachAuxEffect(mAuxEffectId);
1686        }
1687    }
1688    ALOGV("open() DONE status %d", res);
1689    return res;
1690}
1691
1692status_t MediaPlayerService::AudioOutput::start()
1693{
1694    ALOGV("start");
1695    if (mCallbackData != NULL) {
1696        mCallbackData->endTrackSwitch();
1697    }
1698    if (mTrack != 0) {
1699        mTrack->setVolume(mLeftVolume, mRightVolume);
1700        mTrack->setAuxEffectSendLevel(mSendLevel);
1701        return mTrack->start();
1702    }
1703    return NO_INIT;
1704}
1705
1706void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1707    mNextOutput = nextOutput;
1708}
1709
1710
1711void MediaPlayerService::AudioOutput::switchToNextOutput() {
1712    ALOGV("switchToNextOutput");
1713    if (mNextOutput != NULL) {
1714        if (mCallbackData != NULL) {
1715            mCallbackData->beginTrackSwitch();
1716        }
1717        delete mNextOutput->mCallbackData;
1718        mNextOutput->mCallbackData = mCallbackData;
1719        mCallbackData = NULL;
1720        mNextOutput->mRecycledTrack = mTrack;
1721        mTrack.clear();
1722        mNextOutput->mSampleRateHz = mSampleRateHz;
1723        mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1724        mNextOutput->mBytesWritten = mBytesWritten;
1725        mNextOutput->mFlags = mFlags;
1726    }
1727}
1728
1729ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size, bool blocking)
1730{
1731    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1732
1733    //ALOGV("write(%p, %u)", buffer, size);
1734    if (mTrack != 0) {
1735        ssize_t ret = mTrack->write(buffer, size, blocking);
1736        if (ret >= 0) {
1737            mBytesWritten += ret;
1738        }
1739        return ret;
1740    }
1741    return NO_INIT;
1742}
1743
1744void MediaPlayerService::AudioOutput::stop()
1745{
1746    ALOGV("stop");
1747    if (mTrack != 0) mTrack->stop();
1748}
1749
1750void MediaPlayerService::AudioOutput::flush()
1751{
1752    ALOGV("flush");
1753    if (mTrack != 0) mTrack->flush();
1754}
1755
1756void MediaPlayerService::AudioOutput::pause()
1757{
1758    ALOGV("pause");
1759    if (mTrack != 0) mTrack->pause();
1760}
1761
1762void MediaPlayerService::AudioOutput::close()
1763{
1764    ALOGV("close");
1765    mTrack.clear();
1766}
1767
1768void MediaPlayerService::AudioOutput::setVolume(float left, float right)
1769{
1770    ALOGV("setVolume(%f, %f)", left, right);
1771    mLeftVolume = left;
1772    mRightVolume = right;
1773    if (mTrack != 0) {
1774        mTrack->setVolume(left, right);
1775    }
1776}
1777
1778status_t MediaPlayerService::AudioOutput::setPlaybackRate(const AudioPlaybackRate &rate)
1779{
1780    ALOGV("setPlaybackRate(%f %f %d %d)",
1781                rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
1782    if (mTrack == 0) {
1783        // remember rate so that we can set it when the track is opened
1784        mPlaybackRate = rate;
1785        return OK;
1786    }
1787    status_t res = mTrack->setPlaybackRate(rate);
1788    if (res != NO_ERROR) {
1789        return res;
1790    }
1791    // rate.mSpeed is always greater than 0 if setPlaybackRate succeeded
1792    CHECK_GT(rate.mSpeed, 0.f);
1793    mPlaybackRate = rate;
1794    if (mSampleRateHz != 0) {
1795        mMsecsPerFrame = 1E3f / (rate.mSpeed * mSampleRateHz);
1796    }
1797    return res;
1798}
1799
1800status_t MediaPlayerService::AudioOutput::getPlaybackRate(AudioPlaybackRate *rate)
1801{
1802    ALOGV("setPlaybackRate");
1803    if (mTrack == 0) {
1804        return NO_INIT;
1805    }
1806    *rate = mTrack->getPlaybackRate();
1807    return NO_ERROR;
1808}
1809
1810status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
1811{
1812    ALOGV("setAuxEffectSendLevel(%f)", level);
1813    mSendLevel = level;
1814    if (mTrack != 0) {
1815        return mTrack->setAuxEffectSendLevel(level);
1816    }
1817    return NO_ERROR;
1818}
1819
1820status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
1821{
1822    ALOGV("attachAuxEffect(%d)", effectId);
1823    mAuxEffectId = effectId;
1824    if (mTrack != 0) {
1825        return mTrack->attachAuxEffect(effectId);
1826    }
1827    return NO_ERROR;
1828}
1829
1830// static
1831void MediaPlayerService::AudioOutput::CallbackWrapper(
1832        int event, void *cookie, void *info) {
1833    //ALOGV("callbackwrapper");
1834    CallbackData *data = (CallbackData*)cookie;
1835    data->lock();
1836    AudioOutput *me = data->getOutput();
1837    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
1838    if (me == NULL) {
1839        // no output set, likely because the track was scheduled to be reused
1840        // by another player, but the format turned out to be incompatible.
1841        data->unlock();
1842        if (buffer != NULL) {
1843            buffer->size = 0;
1844        }
1845        return;
1846    }
1847
1848    switch(event) {
1849    case AudioTrack::EVENT_MORE_DATA: {
1850        size_t actualSize = (*me->mCallback)(
1851                me, buffer->raw, buffer->size, me->mCallbackCookie,
1852                CB_EVENT_FILL_BUFFER);
1853
1854        // Log when no data is returned from the callback.
1855        // (1) We may have no data (especially with network streaming sources).
1856        // (2) We may have reached the EOS and the audio track is not stopped yet.
1857        // Note that AwesomePlayer/AudioPlayer will only return zero size when it reaches the EOS.
1858        // NuPlayerRenderer will return zero when it doesn't have data (it doesn't block to fill).
1859        //
1860        // This is a benign busy-wait, with the next data request generated 10 ms or more later;
1861        // nevertheless for power reasons, we don't want to see too many of these.
1862
1863        ALOGV_IF(actualSize == 0 && buffer->size > 0, "callbackwrapper: empty buffer returned");
1864
1865        me->mBytesWritten += actualSize;  // benign race with reader.
1866        buffer->size = actualSize;
1867        } break;
1868
1869    case AudioTrack::EVENT_STREAM_END:
1870        // currently only occurs for offloaded callbacks
1871        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
1872        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
1873                me->mCallbackCookie, CB_EVENT_STREAM_END);
1874        break;
1875
1876    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
1877        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
1878        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
1879                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
1880        break;
1881
1882    case AudioTrack::EVENT_UNDERRUN:
1883        // This occurs when there is no data available, typically
1884        // when there is a failure to supply data to the AudioTrack.  It can also
1885        // occur in non-offloaded mode when the audio device comes out of standby.
1886        //
1887        // If an AudioTrack underruns it outputs silence. Since this happens suddenly
1888        // it may sound like an audible pop or glitch.
1889        //
1890        // The underrun event is sent once per track underrun; the condition is reset
1891        // when more data is sent to the AudioTrack.
1892        ALOGI("callbackwrapper: EVENT_UNDERRUN (discarded)");
1893        break;
1894
1895    default:
1896        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
1897    }
1898
1899    data->unlock();
1900}
1901
1902int MediaPlayerService::AudioOutput::getSessionId() const
1903{
1904    return mSessionId;
1905}
1906
1907uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
1908{
1909    if (mTrack == 0) return 0;
1910    return mTrack->getSampleRate();
1911}
1912
1913////////////////////////////////////////////////////////////////////////////////
1914
1915struct CallbackThread : public Thread {
1916    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
1917                   MediaPlayerBase::AudioSink::AudioCallback cb,
1918                   void *cookie);
1919
1920protected:
1921    virtual ~CallbackThread();
1922
1923    virtual bool threadLoop();
1924
1925private:
1926    wp<MediaPlayerBase::AudioSink> mSink;
1927    MediaPlayerBase::AudioSink::AudioCallback mCallback;
1928    void *mCookie;
1929    void *mBuffer;
1930    size_t mBufferSize;
1931
1932    CallbackThread(const CallbackThread &);
1933    CallbackThread &operator=(const CallbackThread &);
1934};
1935
1936CallbackThread::CallbackThread(
1937        const wp<MediaPlayerBase::AudioSink> &sink,
1938        MediaPlayerBase::AudioSink::AudioCallback cb,
1939        void *cookie)
1940    : mSink(sink),
1941      mCallback(cb),
1942      mCookie(cookie),
1943      mBuffer(NULL),
1944      mBufferSize(0) {
1945}
1946
1947CallbackThread::~CallbackThread() {
1948    if (mBuffer) {
1949        free(mBuffer);
1950        mBuffer = NULL;
1951    }
1952}
1953
1954bool CallbackThread::threadLoop() {
1955    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
1956    if (sink == NULL) {
1957        return false;
1958    }
1959
1960    if (mBuffer == NULL) {
1961        mBufferSize = sink->bufferSize();
1962        mBuffer = malloc(mBufferSize);
1963    }
1964
1965    size_t actualSize =
1966        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
1967                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
1968
1969    if (actualSize > 0) {
1970        sink->write(mBuffer, actualSize);
1971        // Could return false on sink->write() error or short count.
1972        // Not necessarily appropriate but would work for AudioCache behavior.
1973    }
1974
1975    return true;
1976}
1977
1978////////////////////////////////////////////////////////////////////////////////
1979
1980void MediaPlayerService::addBatteryData(uint32_t params)
1981{
1982    Mutex::Autolock lock(mLock);
1983
1984    int32_t time = systemTime() / 1000000L;
1985
1986    // change audio output devices. This notification comes from AudioFlinger
1987    if ((params & kBatteryDataSpeakerOn)
1988            || (params & kBatteryDataOtherAudioDeviceOn)) {
1989
1990        int deviceOn[NUM_AUDIO_DEVICES];
1991        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
1992            deviceOn[i] = 0;
1993        }
1994
1995        if ((params & kBatteryDataSpeakerOn)
1996                && (params & kBatteryDataOtherAudioDeviceOn)) {
1997            deviceOn[SPEAKER_AND_OTHER] = 1;
1998        } else if (params & kBatteryDataSpeakerOn) {
1999            deviceOn[SPEAKER] = 1;
2000        } else {
2001            deviceOn[OTHER_AUDIO_DEVICE] = 1;
2002        }
2003
2004        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2005            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
2006
2007                if (mBatteryAudio.refCount > 0) { // if playing audio
2008                    if (!deviceOn[i]) {
2009                        mBatteryAudio.lastTime[i] += time;
2010                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2011                        mBatteryAudio.lastTime[i] = 0;
2012                    } else {
2013                        mBatteryAudio.lastTime[i] = 0 - time;
2014                    }
2015                }
2016
2017                mBatteryAudio.deviceOn[i] = deviceOn[i];
2018            }
2019        }
2020        return;
2021    }
2022
2023    // an audio stream is started
2024    if (params & kBatteryDataAudioFlingerStart) {
2025        // record the start time only if currently no other audio
2026        // is being played
2027        if (mBatteryAudio.refCount == 0) {
2028            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2029                if (mBatteryAudio.deviceOn[i]) {
2030                    mBatteryAudio.lastTime[i] -= time;
2031                }
2032            }
2033        }
2034
2035        mBatteryAudio.refCount ++;
2036        return;
2037
2038    } else if (params & kBatteryDataAudioFlingerStop) {
2039        if (mBatteryAudio.refCount <= 0) {
2040            ALOGW("Battery track warning: refCount is <= 0");
2041            return;
2042        }
2043
2044        // record the stop time only if currently this is the only
2045        // audio being played
2046        if (mBatteryAudio.refCount == 1) {
2047            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2048                if (mBatteryAudio.deviceOn[i]) {
2049                    mBatteryAudio.lastTime[i] += time;
2050                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2051                    mBatteryAudio.lastTime[i] = 0;
2052                }
2053            }
2054        }
2055
2056        mBatteryAudio.refCount --;
2057        return;
2058    }
2059
2060    int uid = IPCThreadState::self()->getCallingUid();
2061    if (uid == AID_MEDIA) {
2062        return;
2063    }
2064    int index = mBatteryData.indexOfKey(uid);
2065
2066    if (index < 0) { // create a new entry for this UID
2067        BatteryUsageInfo info;
2068        info.audioTotalTime = 0;
2069        info.videoTotalTime = 0;
2070        info.audioLastTime = 0;
2071        info.videoLastTime = 0;
2072        info.refCount = 0;
2073
2074        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2075            ALOGE("Battery track error: no memory for new app");
2076            return;
2077        }
2078    }
2079
2080    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2081
2082    if (params & kBatteryDataCodecStarted) {
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    } else {
2092        if (info.refCount == 0) {
2093            ALOGW("Battery track warning: refCount is already 0");
2094            return;
2095        } else if (info.refCount < 0) {
2096            ALOGE("Battery track error: refCount < 0");
2097            mBatteryData.removeItem(uid);
2098            return;
2099        }
2100
2101        if (params & kBatteryDataTrackAudio) {
2102            info.audioLastTime += time;
2103            info.refCount --;
2104        }
2105        if (params & kBatteryDataTrackVideo) {
2106            info.videoLastTime += time;
2107            info.refCount --;
2108        }
2109
2110        // no stream is being played by this UID
2111        if (info.refCount == 0) {
2112            info.audioTotalTime += info.audioLastTime;
2113            info.audioLastTime = 0;
2114            info.videoTotalTime += info.videoLastTime;
2115            info.videoLastTime = 0;
2116        }
2117    }
2118}
2119
2120status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2121    Mutex::Autolock lock(mLock);
2122
2123    // audio output devices usage
2124    int32_t time = systemTime() / 1000000L; //in ms
2125    int32_t totalTime;
2126
2127    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2128        totalTime = mBatteryAudio.totalTime[i];
2129
2130        if (mBatteryAudio.deviceOn[i]
2131            && (mBatteryAudio.lastTime[i] != 0)) {
2132                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2133                totalTime += tmpTime;
2134        }
2135
2136        reply->writeInt32(totalTime);
2137        // reset the total time
2138        mBatteryAudio.totalTime[i] = 0;
2139   }
2140
2141    // codec usage
2142    BatteryUsageInfo info;
2143    int size = mBatteryData.size();
2144
2145    reply->writeInt32(size);
2146    int i = 0;
2147
2148    while (i < size) {
2149        info = mBatteryData.valueAt(i);
2150
2151        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2152        reply->writeInt32(info.audioTotalTime);
2153        reply->writeInt32(info.videoTotalTime);
2154
2155        info.audioTotalTime = 0;
2156        info.videoTotalTime = 0;
2157
2158        // remove the UID entry where no stream is being played
2159        if (info.refCount <= 0) {
2160            mBatteryData.removeItemsAt(i);
2161            size --;
2162            i --;
2163        }
2164        i++;
2165    }
2166    return NO_ERROR;
2167}
2168} // namespace android
2169