MediaPlayerService.cpp revision 0bfa3eee31c9f99ec65158f810e65e12bae5ebf1 
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/AudioPolicyHelper.h>
49#include <media/IMediaHTTPService.h>
50#include <media/IRemoteDisplay.h>
51#include <media/IRemoteDisplayClient.h>
52#include <media/MediaPlayerInterface.h>
53#include <media/mediarecorder.h>
54#include <media/MediaMetadataRetrieverInterface.h>
55#include <media/Metadata.h>
56#include <media/AudioTrack.h>
57#include <media/MemoryLeakTrackUtil.h>
58#include <media/stagefright/MediaCodecList.h>
59#include <media/stagefright/MediaErrors.h>
60#include <media/stagefright/Utils.h>
61#include <media/stagefright/foundation/ADebug.h>
62#include <media/stagefright/foundation/ALooperRoster.h>
63#include <mediautils/BatteryNotifier.h>
64
65#include <memunreachable/memunreachable.h>
66#include <system/audio.h>
67
68#include <private/android_filesystem_config.h>
69
70#include "ActivityManager.h"
71#include "MediaRecorderClient.h"
72#include "MediaPlayerService.h"
73#include "MetadataRetrieverClient.h"
74#include "MediaPlayerFactory.h"
75
76#include "TestPlayerStub.h"
77#include "nuplayer/NuPlayerDriver.h"
78
79#include <OMX.h>
80
81#include "HDCP.h"
82#include "HTTPBase.h"
83#include "RemoteDisplay.h"
84
85namespace {
86using android::media::Metadata;
87using android::status_t;
88using android::OK;
89using android::BAD_VALUE;
90using android::NOT_ENOUGH_DATA;
91using android::Parcel;
92
93// Max number of entries in the filter.
94const int kMaxFilterSize = 64;  // I pulled that out of thin air.
95
96const float kMaxRequiredSpeed = 8.0f; // for PCM tracks allow up to 8x speedup.
97
98// FIXME: Move all the metadata related function in the Metadata.cpp
99
100
101// Unmarshall a filter from a Parcel.
102// Filter format in a parcel:
103//
104//  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
105// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
106// |                       number of entries (n)                   |
107// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
108// |                       metadata type 1                         |
109// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
110// |                       metadata type 2                         |
111// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
112//  ....
113// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
114// |                       metadata type n                         |
115// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
116//
117// @param p Parcel that should start with a filter.
118// @param[out] filter On exit contains the list of metadata type to be
119//                    filtered.
120// @param[out] status On exit contains the status code to be returned.
121// @return true if the parcel starts with a valid filter.
122bool unmarshallFilter(const Parcel& p,
123                      Metadata::Filter *filter,
124                      status_t *status)
125{
126    int32_t val;
127    if (p.readInt32(&val) != OK)
128    {
129        ALOGE("Failed to read filter's length");
130        *status = NOT_ENOUGH_DATA;
131        return false;
132    }
133
134    if( val > kMaxFilterSize || val < 0)
135    {
136        ALOGE("Invalid filter len %d", val);
137        *status = BAD_VALUE;
138        return false;
139    }
140
141    const size_t num = val;
142
143    filter->clear();
144    filter->setCapacity(num);
145
146    size_t size = num * sizeof(Metadata::Type);
147
148
149    if (p.dataAvail() < size)
150    {
151        ALOGE("Filter too short expected %zu but got %zu", size, p.dataAvail());
152        *status = NOT_ENOUGH_DATA;
153        return false;
154    }
155
156    const Metadata::Type *data =
157            static_cast<const Metadata::Type*>(p.readInplace(size));
158
159    if (NULL == data)
160    {
161        ALOGE("Filter had no data");
162        *status = BAD_VALUE;
163        return false;
164    }
165
166    // TODO: The stl impl of vector would be more efficient here
167    // because it degenerates into a memcpy on pod types. Try to
168    // replace later or use stl::set.
169    for (size_t i = 0; i < num; ++i)
170    {
171        filter->add(*data);
172        ++data;
173    }
174    *status = OK;
175    return true;
176}
177
178// @param filter Of metadata type.
179// @param val To be searched.
180// @return true if a match was found.
181bool findMetadata(const Metadata::Filter& filter, const int32_t val)
182{
183    // Deal with empty and ANY right away
184    if (filter.isEmpty()) return false;
185    if (filter[0] == Metadata::kAny) return true;
186
187    return filter.indexOf(val) >= 0;
188}
189
190}  // anonymous namespace
191
192
193namespace {
194using android::Parcel;
195using android::String16;
196
197// marshalling tag indicating flattened utf16 tags
198// keep in sync with frameworks/base/media/java/android/media/AudioAttributes.java
199const int32_t kAudioAttributesMarshallTagFlattenTags = 1;
200
201// Audio attributes format in a parcel:
202//
203//  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
204// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
205// |                       usage                                   |
206// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
207// |                       content_type                            |
208// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
209// |                       source                                  |
210// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
211// |                       flags                                   |
212// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
213// |                       kAudioAttributesMarshallTagFlattenTags  | // ignore tags if not found
214// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
215// |                       flattened tags in UTF16                 |
216// |                         ...                                   |
217// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
218//
219// @param p Parcel that contains audio attributes.
220// @param[out] attributes On exit points to an initialized audio_attributes_t structure
221// @param[out] status On exit contains the status code to be returned.
222void unmarshallAudioAttributes(const Parcel& parcel, audio_attributes_t *attributes)
223{
224    attributes->usage = (audio_usage_t) parcel.readInt32();
225    attributes->content_type = (audio_content_type_t) parcel.readInt32();
226    attributes->source = (audio_source_t) parcel.readInt32();
227    attributes->flags = (audio_flags_mask_t) parcel.readInt32();
228    const bool hasFlattenedTag = (parcel.readInt32() == kAudioAttributesMarshallTagFlattenTags);
229    if (hasFlattenedTag) {
230        // the tags are UTF16, convert to UTF8
231        String16 tags = parcel.readString16();
232        ssize_t realTagSize = utf16_to_utf8_length(tags.string(), tags.size());
233        if (realTagSize <= 0) {
234            strcpy(attributes->tags, "");
235        } else {
236            // copy the flattened string into the attributes as the destination for the conversion:
237            // copying array size -1, array for tags was calloc'd, no need to NULL-terminate it
238            size_t tagSize = realTagSize > AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 ?
239                    AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 : realTagSize;
240            utf16_to_utf8(tags.string(), tagSize, attributes->tags);
241        }
242    } else {
243        ALOGE("unmarshallAudioAttributes() received unflattened tags, ignoring tag values");
244        strcpy(attributes->tags, "");
245    }
246}
247} // anonymous namespace
248
249
250namespace android {
251
252extern ALooperRoster gLooperRoster;
253
254
255static bool checkPermission(const char* permissionString) {
256    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
257    bool ok = checkCallingPermission(String16(permissionString));
258    if (!ok) ALOGE("Request requires %s", permissionString);
259    return ok;
260}
261
262// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
263/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
264/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
265
266void MediaPlayerService::instantiate() {
267    defaultServiceManager()->addService(
268            String16("media.player"), new MediaPlayerService());
269}
270
271MediaPlayerService::MediaPlayerService()
272{
273    ALOGV("MediaPlayerService created");
274    mNextConnId = 1;
275
276    mBatteryAudio.refCount = 0;
277    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
278        mBatteryAudio.deviceOn[i] = 0;
279        mBatteryAudio.lastTime[i] = 0;
280        mBatteryAudio.totalTime[i] = 0;
281    }
282    // speaker is on by default
283    mBatteryAudio.deviceOn[SPEAKER] = 1;
284
285    // reset battery stats
286    // if the mediaserver has crashed, battery stats could be left
287    // in bad state, reset the state upon service start.
288    BatteryNotifier::getInstance().noteResetVideo();
289
290    MediaPlayerFactory::registerBuiltinFactories();
291}
292
293MediaPlayerService::~MediaPlayerService()
294{
295    ALOGV("MediaPlayerService destroyed");
296}
297
298sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(const String16 &opPackageName)
299{
300    pid_t pid = IPCThreadState::self()->getCallingPid();
301    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid, opPackageName);
302    wp<MediaRecorderClient> w = recorder;
303    Mutex::Autolock lock(mLock);
304    mMediaRecorderClients.add(w);
305    ALOGV("Create new media recorder client from pid %d", pid);
306    return recorder;
307}
308
309void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
310{
311    Mutex::Autolock lock(mLock);
312    mMediaRecorderClients.remove(client);
313    ALOGV("Delete media recorder client");
314}
315
316sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
317{
318    pid_t pid = IPCThreadState::self()->getCallingPid();
319    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
320    ALOGV("Create new media retriever from pid %d", pid);
321    return retriever;
322}
323
324sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
325        audio_session_t audioSessionId)
326{
327    pid_t pid = IPCThreadState::self()->getCallingPid();
328    int32_t connId = android_atomic_inc(&mNextConnId);
329
330    sp<Client> c = new Client(
331            this, pid, connId, client, audioSessionId,
332            IPCThreadState::self()->getCallingUid());
333
334    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
335         IPCThreadState::self()->getCallingUid());
336
337    wp<Client> w = c;
338    {
339        Mutex::Autolock lock(mLock);
340        mClients.add(w);
341    }
342    return c;
343}
344
345sp<IMediaCodecList> MediaPlayerService::getCodecList() const {
346    return MediaCodecList::getLocalInstance();
347}
348
349sp<IOMX> MediaPlayerService::getOMX() {
350    ALOGI("MediaPlayerService::getOMX");
351    Mutex::Autolock autoLock(mLock);
352
353    if (mOMX.get() == NULL) {
354        mOMX = new OMX;
355    }
356
357    return mOMX;
358}
359
360sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
361    return new HDCP(createEncryptionModule);
362}
363
364sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
365        const String16 &opPackageName,
366        const sp<IRemoteDisplayClient>& client, const String8& iface) {
367    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
368        return NULL;
369    }
370
371    return new RemoteDisplay(opPackageName, client, iface.string());
372}
373
374status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
375{
376    const size_t SIZE = 256;
377    char buffer[SIZE];
378    String8 result;
379
380    result.append(" AudioOutput\n");
381    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
382            mStreamType, mLeftVolume, mRightVolume);
383    result.append(buffer);
384    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
385            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
386    result.append(buffer);
387    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
388            mAuxEffectId, mSendLevel);
389    result.append(buffer);
390
391    ::write(fd, result.string(), result.size());
392    if (mTrack != 0) {
393        mTrack->dump(fd, args);
394    }
395    return NO_ERROR;
396}
397
398status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args)
399{
400    const size_t SIZE = 256;
401    char buffer[SIZE];
402    String8 result;
403    result.append(" Client\n");
404    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
405            mPid, mConnId, mStatus, mLoop?"true": "false");
406    result.append(buffer);
407    write(fd, result.string(), result.size());
408    if (mPlayer != NULL) {
409        mPlayer->dump(fd, args);
410    }
411    if (mAudioOutput != 0) {
412        mAudioOutput->dump(fd, args);
413    }
414    write(fd, "\n", 1);
415    return NO_ERROR;
416}
417
418/**
419 * The only arguments this understands right now are -c, -von and -voff,
420 * which are parsed by ALooperRoster::dump()
421 */
422status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
423{
424    const size_t SIZE = 256;
425    char buffer[SIZE];
426    String8 result;
427    SortedVector< sp<Client> > clients; //to serialise the mutex unlock & client destruction.
428    SortedVector< sp<MediaRecorderClient> > mediaRecorderClients;
429
430    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
431        snprintf(buffer, SIZE, "Permission Denial: "
432                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
433                IPCThreadState::self()->getCallingPid(),
434                IPCThreadState::self()->getCallingUid());
435        result.append(buffer);
436    } else {
437        Mutex::Autolock lock(mLock);
438        for (int i = 0, n = mClients.size(); i < n; ++i) {
439            sp<Client> c = mClients[i].promote();
440            if (c != 0) c->dump(fd, args);
441            clients.add(c);
442        }
443        if (mMediaRecorderClients.size() == 0) {
444                result.append(" No media recorder client\n\n");
445        } else {
446            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
447                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
448                if (c != 0) {
449                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
450                    result.append(buffer);
451                    write(fd, result.string(), result.size());
452                    result = "\n";
453                    c->dump(fd, args);
454                    mediaRecorderClients.add(c);
455                }
456            }
457        }
458
459        result.append(" Files opened and/or mapped:\n");
460        snprintf(buffer, SIZE, "/proc/%d/maps", getpid());
461        FILE *f = fopen(buffer, "r");
462        if (f) {
463            while (!feof(f)) {
464                fgets(buffer, SIZE, f);
465                if (strstr(buffer, " /storage/") ||
466                    strstr(buffer, " /system/sounds/") ||
467                    strstr(buffer, " /data/") ||
468                    strstr(buffer, " /system/media/")) {
469                    result.append("  ");
470                    result.append(buffer);
471                }
472            }
473            fclose(f);
474        } else {
475            result.append("couldn't open ");
476            result.append(buffer);
477            result.append("\n");
478        }
479
480        snprintf(buffer, SIZE, "/proc/%d/fd", getpid());
481        DIR *d = opendir(buffer);
482        if (d) {
483            struct dirent *ent;
484            while((ent = readdir(d)) != NULL) {
485                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
486                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", getpid(), ent->d_name);
487                    struct stat s;
488                    if (lstat(buffer, &s) == 0) {
489                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
490                            char linkto[256];
491                            int len = readlink(buffer, linkto, sizeof(linkto));
492                            if(len > 0) {
493                                if(len > 255) {
494                                    linkto[252] = '.';
495                                    linkto[253] = '.';
496                                    linkto[254] = '.';
497                                    linkto[255] = 0;
498                                } else {
499                                    linkto[len] = 0;
500                                }
501                                if (strstr(linkto, "/storage/") == linkto ||
502                                    strstr(linkto, "/system/sounds/") == linkto ||
503                                    strstr(linkto, "/data/") == linkto ||
504                                    strstr(linkto, "/system/media/") == linkto) {
505                                    result.append("  ");
506                                    result.append(buffer);
507                                    result.append(" -> ");
508                                    result.append(linkto);
509                                    result.append("\n");
510                                }
511                            }
512                        } else {
513                            result.append("  unexpected type for ");
514                            result.append(buffer);
515                            result.append("\n");
516                        }
517                    }
518                }
519            }
520            closedir(d);
521        } else {
522            result.append("couldn't open ");
523            result.append(buffer);
524            result.append("\n");
525        }
526
527        gLooperRoster.dump(fd, args);
528
529        bool dumpMem = false;
530        bool unreachableMemory = false;
531        for (size_t i = 0; i < args.size(); i++) {
532            if (args[i] == String16("-m")) {
533                dumpMem = true;
534            } else if (args[i] == String16("--unreachable")) {
535                unreachableMemory = true;
536            }
537        }
538        if (dumpMem) {
539            dumpMemoryAddresses(fd);
540        }
541        if (unreachableMemory) {
542            result.append("\nDumping unreachable memory:\n");
543            // TODO - should limit be an argument parameter?
544            std::string s = GetUnreachableMemoryString(true /* contents */, 10000 /* limit */);
545            result.append(s.c_str(), s.size());
546        }
547    }
548    write(fd, result.string(), result.size());
549    return NO_ERROR;
550}
551
552void MediaPlayerService::removeClient(wp<Client> client)
553{
554    Mutex::Autolock lock(mLock);
555    mClients.remove(client);
556}
557
558MediaPlayerService::Client::Client(
559        const sp<MediaPlayerService>& service, pid_t pid,
560        int32_t connId, const sp<IMediaPlayerClient>& client,
561        audio_session_t audioSessionId, uid_t uid)
562{
563    ALOGV("Client(%d) constructor", connId);
564    mPid = pid;
565    mConnId = connId;
566    mService = service;
567    mClient = client;
568    mLoop = false;
569    mStatus = NO_INIT;
570    mAudioSessionId = audioSessionId;
571    mUID = uid;
572    mRetransmitEndpointValid = false;
573    mAudioAttributes = NULL;
574
575#if CALLBACK_ANTAGONIZER
576    ALOGD("create Antagonizer");
577    mAntagonizer = new Antagonizer(notify, this);
578#endif
579}
580
581MediaPlayerService::Client::~Client()
582{
583    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
584    mAudioOutput.clear();
585    wp<Client> client(this);
586    disconnect();
587    mService->removeClient(client);
588    if (mAudioAttributes != NULL) {
589        free(mAudioAttributes);
590    }
591}
592
593void MediaPlayerService::Client::disconnect()
594{
595    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
596    // grab local reference and clear main reference to prevent future
597    // access to object
598    sp<MediaPlayerBase> p;
599    {
600        Mutex::Autolock l(mLock);
601        p = mPlayer;
602        mClient.clear();
603    }
604
605    mPlayer.clear();
606
607    // clear the notification to prevent callbacks to dead client
608    // and reset the player. We assume the player will serialize
609    // access to itself if necessary.
610    if (p != 0) {
611        p->setNotifyCallback(0, 0);
612#if CALLBACK_ANTAGONIZER
613        ALOGD("kill Antagonizer");
614        mAntagonizer->kill();
615#endif
616        p->reset();
617    }
618
619    disconnectNativeWindow();
620
621    IPCThreadState::self()->flushCommands();
622}
623
624sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
625{
626    // determine if we have the right player type
627    sp<MediaPlayerBase> p = mPlayer;
628    if ((p != NULL) && (p->playerType() != playerType)) {
629        ALOGV("delete player");
630        p.clear();
631    }
632    if (p == NULL) {
633        p = MediaPlayerFactory::createPlayer(playerType, this, notify, mPid);
634    }
635
636    if (p != NULL) {
637        p->setUID(mUID);
638    }
639
640    return p;
641}
642
643MediaPlayerService::Client::ServiceDeathNotifier::ServiceDeathNotifier(
644        const sp<IBinder>& service,
645        const sp<MediaPlayerBase>& listener,
646        int which) {
647    mService = service;
648    mListener = listener;
649    mWhich = which;
650}
651
652MediaPlayerService::Client::ServiceDeathNotifier::~ServiceDeathNotifier() {
653    mService->unlinkToDeath(this);
654}
655
656void MediaPlayerService::Client::ServiceDeathNotifier::binderDied(const wp<IBinder>& /*who*/) {
657    sp<MediaPlayerBase> listener = mListener.promote();
658    if (listener != NULL) {
659        listener->sendEvent(MEDIA_ERROR, MEDIA_ERROR_SERVER_DIED, mWhich);
660    } else {
661        ALOGW("listener for process %d death is gone", mWhich);
662    }
663}
664
665sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
666        player_type playerType)
667{
668    ALOGV("player type = %d", playerType);
669
670    // create the right type of player
671    sp<MediaPlayerBase> p = createPlayer(playerType);
672    if (p == NULL) {
673        return p;
674    }
675
676    sp<IServiceManager> sm = defaultServiceManager();
677    sp<IBinder> binder = sm->getService(String16("media.extractor"));
678    mExtractorDeathListener = new ServiceDeathNotifier(binder, p, MEDIAEXTRACTOR_PROCESS_DEATH);
679    binder->linkToDeath(mExtractorDeathListener);
680
681    binder = sm->getService(String16("media.codec"));
682    mCodecDeathListener = new ServiceDeathNotifier(binder, p, MEDIACODEC_PROCESS_DEATH);
683    binder->linkToDeath(mCodecDeathListener);
684
685    if (!p->hardwareOutput()) {
686        Mutex::Autolock l(mLock);
687        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
688                mPid, mAudioAttributes);
689        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
690    }
691
692    return p;
693}
694
695void MediaPlayerService::Client::setDataSource_post(
696        const sp<MediaPlayerBase>& p,
697        status_t status)
698{
699    ALOGV(" setDataSource");
700    mStatus = status;
701    if (mStatus != OK) {
702        ALOGE("  error: %d", mStatus);
703        return;
704    }
705
706    // Set the re-transmission endpoint if one was chosen.
707    if (mRetransmitEndpointValid) {
708        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
709        if (mStatus != NO_ERROR) {
710            ALOGE("setRetransmitEndpoint error: %d", mStatus);
711        }
712    }
713
714    if (mStatus == OK) {
715        mPlayer = p;
716    }
717}
718
719status_t MediaPlayerService::Client::setDataSource(
720        const sp<IMediaHTTPService> &httpService,
721        const char *url,
722        const KeyedVector<String8, String8> *headers)
723{
724    ALOGV("setDataSource(%s)", url);
725    if (url == NULL)
726        return UNKNOWN_ERROR;
727
728    if ((strncmp(url, "http://", 7) == 0) ||
729        (strncmp(url, "https://", 8) == 0) ||
730        (strncmp(url, "rtsp://", 7) == 0)) {
731        if (!checkPermission("android.permission.INTERNET")) {
732            return PERMISSION_DENIED;
733        }
734    }
735
736    if (strncmp(url, "content://", 10) == 0) {
737        // get a filedescriptor for the content Uri and
738        // pass it to the setDataSource(fd) method
739
740        String16 url16(url);
741        int fd = android::openContentProviderFile(url16);
742        if (fd < 0)
743        {
744            ALOGE("Couldn't open fd for %s", url);
745            return UNKNOWN_ERROR;
746        }
747        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
748        close(fd);
749        return mStatus;
750    } else {
751        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
752        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
753        if (p == NULL) {
754            return NO_INIT;
755        }
756
757        setDataSource_post(p, p->setDataSource(httpService, url, headers));
758        return mStatus;
759    }
760}
761
762status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
763{
764    ALOGV("setDataSource fd=%d (%s), offset=%lld, length=%lld",
765            fd, nameForFd(fd).c_str(), (long long) offset, (long long) length);
766    struct stat sb;
767    int ret = fstat(fd, &sb);
768    if (ret != 0) {
769        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
770        return UNKNOWN_ERROR;
771    }
772
773    ALOGV("st_dev  = %llu", static_cast<unsigned long long>(sb.st_dev));
774    ALOGV("st_mode = %u", sb.st_mode);
775    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
776    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
777    ALOGV("st_size = %llu", static_cast<unsigned long long>(sb.st_size));
778
779    if (offset >= sb.st_size) {
780        ALOGE("offset error");
781        return UNKNOWN_ERROR;
782    }
783    if (offset + length > sb.st_size) {
784        length = sb.st_size - offset;
785        ALOGV("calculated length = %lld", (long long)length);
786    }
787
788    player_type playerType = MediaPlayerFactory::getPlayerType(this,
789                                                               fd,
790                                                               offset,
791                                                               length);
792    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
793    if (p == NULL) {
794        return NO_INIT;
795    }
796
797    // now set data source
798    setDataSource_post(p, p->setDataSource(fd, offset, length));
799    return mStatus;
800}
801
802status_t MediaPlayerService::Client::setDataSource(
803        const sp<IStreamSource> &source) {
804    // create the right type of player
805    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
806    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
807    if (p == NULL) {
808        return NO_INIT;
809    }
810
811    // now set data source
812    setDataSource_post(p, p->setDataSource(source));
813    return mStatus;
814}
815
816status_t MediaPlayerService::Client::setDataSource(
817        const sp<IDataSource> &source) {
818    sp<DataSource> dataSource = DataSource::CreateFromIDataSource(source);
819    player_type playerType = MediaPlayerFactory::getPlayerType(this, dataSource);
820    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
821    if (p == NULL) {
822        return NO_INIT;
823    }
824    // now set data source
825    setDataSource_post(p, p->setDataSource(dataSource));
826    return mStatus;
827}
828
829void MediaPlayerService::Client::disconnectNativeWindow() {
830    if (mConnectedWindow != NULL) {
831        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
832                NATIVE_WINDOW_API_MEDIA);
833
834        if (err != OK) {
835            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
836                    strerror(-err), err);
837        }
838    }
839    mConnectedWindow.clear();
840}
841
842status_t MediaPlayerService::Client::setVideoSurfaceTexture(
843        const sp<IGraphicBufferProducer>& bufferProducer)
844{
845    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
846    sp<MediaPlayerBase> p = getPlayer();
847    if (p == 0) return UNKNOWN_ERROR;
848
849    sp<IBinder> binder(IInterface::asBinder(bufferProducer));
850    if (mConnectedWindowBinder == binder) {
851        return OK;
852    }
853
854    sp<ANativeWindow> anw;
855    if (bufferProducer != NULL) {
856        anw = new Surface(bufferProducer, true /* controlledByApp */);
857        status_t err = native_window_api_connect(anw.get(),
858                NATIVE_WINDOW_API_MEDIA);
859
860        if (err != OK) {
861            ALOGE("setVideoSurfaceTexture failed: %d", err);
862            // Note that we must do the reset before disconnecting from the ANW.
863            // Otherwise queue/dequeue calls could be made on the disconnected
864            // ANW, which may result in errors.
865            reset();
866
867            disconnectNativeWindow();
868
869            return err;
870        }
871    }
872
873    // Note that we must set the player's new GraphicBufferProducer before
874    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
875    // on the disconnected ANW, which may result in errors.
876    status_t err = p->setVideoSurfaceTexture(bufferProducer);
877
878    disconnectNativeWindow();
879
880    mConnectedWindow = anw;
881
882    if (err == OK) {
883        mConnectedWindowBinder = binder;
884    } else {
885        disconnectNativeWindow();
886    }
887
888    return err;
889}
890
891status_t MediaPlayerService::Client::invoke(const Parcel& request,
892                                            Parcel *reply)
893{
894    sp<MediaPlayerBase> p = getPlayer();
895    if (p == NULL) return UNKNOWN_ERROR;
896    return p->invoke(request, reply);
897}
898
899// This call doesn't need to access the native player.
900status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
901{
902    status_t status;
903    media::Metadata::Filter allow, drop;
904
905    if (unmarshallFilter(filter, &allow, &status) &&
906        unmarshallFilter(filter, &drop, &status)) {
907        Mutex::Autolock lock(mLock);
908
909        mMetadataAllow = allow;
910        mMetadataDrop = drop;
911    }
912    return status;
913}
914
915status_t MediaPlayerService::Client::getMetadata(
916        bool update_only, bool /*apply_filter*/, Parcel *reply)
917{
918    sp<MediaPlayerBase> player = getPlayer();
919    if (player == 0) return UNKNOWN_ERROR;
920
921    status_t status;
922    // Placeholder for the return code, updated by the caller.
923    reply->writeInt32(-1);
924
925    media::Metadata::Filter ids;
926
927    // We don't block notifications while we fetch the data. We clear
928    // mMetadataUpdated first so we don't lose notifications happening
929    // during the rest of this call.
930    {
931        Mutex::Autolock lock(mLock);
932        if (update_only) {
933            ids = mMetadataUpdated;
934        }
935        mMetadataUpdated.clear();
936    }
937
938    media::Metadata metadata(reply);
939
940    metadata.appendHeader();
941    status = player->getMetadata(ids, reply);
942
943    if (status != OK) {
944        metadata.resetParcel();
945        ALOGE("getMetadata failed %d", status);
946        return status;
947    }
948
949    // FIXME: Implement filtering on the result. Not critical since
950    // filtering takes place on the update notifications already. This
951    // would be when all the metadata are fetch and a filter is set.
952
953    // Everything is fine, update the metadata length.
954    metadata.updateLength();
955    return OK;
956}
957
958status_t MediaPlayerService::Client::prepareAsync()
959{
960    ALOGV("[%d] prepareAsync", mConnId);
961    sp<MediaPlayerBase> p = getPlayer();
962    if (p == 0) return UNKNOWN_ERROR;
963    status_t ret = p->prepareAsync();
964#if CALLBACK_ANTAGONIZER
965    ALOGD("start Antagonizer");
966    if (ret == NO_ERROR) mAntagonizer->start();
967#endif
968    return ret;
969}
970
971status_t MediaPlayerService::Client::start()
972{
973    ALOGV("[%d] start", mConnId);
974    sp<MediaPlayerBase> p = getPlayer();
975    if (p == 0) return UNKNOWN_ERROR;
976    p->setLooping(mLoop);
977    return p->start();
978}
979
980status_t MediaPlayerService::Client::stop()
981{
982    ALOGV("[%d] stop", mConnId);
983    sp<MediaPlayerBase> p = getPlayer();
984    if (p == 0) return UNKNOWN_ERROR;
985    return p->stop();
986}
987
988status_t MediaPlayerService::Client::pause()
989{
990    ALOGV("[%d] pause", mConnId);
991    sp<MediaPlayerBase> p = getPlayer();
992    if (p == 0) return UNKNOWN_ERROR;
993    return p->pause();
994}
995
996status_t MediaPlayerService::Client::isPlaying(bool* state)
997{
998    *state = false;
999    sp<MediaPlayerBase> p = getPlayer();
1000    if (p == 0) return UNKNOWN_ERROR;
1001    *state = p->isPlaying();
1002    ALOGV("[%d] isPlaying: %d", mConnId, *state);
1003    return NO_ERROR;
1004}
1005
1006status_t MediaPlayerService::Client::setPlaybackSettings(const AudioPlaybackRate& rate)
1007{
1008    ALOGV("[%d] setPlaybackSettings(%f, %f, %d, %d)",
1009            mConnId, rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
1010    sp<MediaPlayerBase> p = getPlayer();
1011    if (p == 0) return UNKNOWN_ERROR;
1012    return p->setPlaybackSettings(rate);
1013}
1014
1015status_t MediaPlayerService::Client::getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */)
1016{
1017    sp<MediaPlayerBase> p = getPlayer();
1018    if (p == 0) return UNKNOWN_ERROR;
1019    status_t ret = p->getPlaybackSettings(rate);
1020    if (ret == NO_ERROR) {
1021        ALOGV("[%d] getPlaybackSettings(%f, %f, %d, %d)",
1022                mConnId, rate->mSpeed, rate->mPitch, rate->mFallbackMode, rate->mStretchMode);
1023    } else {
1024        ALOGV("[%d] getPlaybackSettings returned %d", mConnId, ret);
1025    }
1026    return ret;
1027}
1028
1029status_t MediaPlayerService::Client::setSyncSettings(
1030        const AVSyncSettings& sync, float videoFpsHint)
1031{
1032    ALOGV("[%d] setSyncSettings(%u, %u, %f, %f)",
1033            mConnId, sync.mSource, sync.mAudioAdjustMode, sync.mTolerance, videoFpsHint);
1034    sp<MediaPlayerBase> p = getPlayer();
1035    if (p == 0) return UNKNOWN_ERROR;
1036    return p->setSyncSettings(sync, videoFpsHint);
1037}
1038
1039status_t MediaPlayerService::Client::getSyncSettings(
1040        AVSyncSettings* sync /* nonnull */, float* videoFps /* nonnull */)
1041{
1042    sp<MediaPlayerBase> p = getPlayer();
1043    if (p == 0) return UNKNOWN_ERROR;
1044    status_t ret = p->getSyncSettings(sync, videoFps);
1045    if (ret == NO_ERROR) {
1046        ALOGV("[%d] getSyncSettings(%u, %u, %f, %f)",
1047                mConnId, sync->mSource, sync->mAudioAdjustMode, sync->mTolerance, *videoFps);
1048    } else {
1049        ALOGV("[%d] getSyncSettings returned %d", mConnId, ret);
1050    }
1051    return ret;
1052}
1053
1054status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1055{
1056    ALOGV("getCurrentPosition");
1057    sp<MediaPlayerBase> p = getPlayer();
1058    if (p == 0) return UNKNOWN_ERROR;
1059    status_t ret = p->getCurrentPosition(msec);
1060    if (ret == NO_ERROR) {
1061        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1062    } else {
1063        ALOGE("getCurrentPosition returned %d", ret);
1064    }
1065    return ret;
1066}
1067
1068status_t MediaPlayerService::Client::getDuration(int *msec)
1069{
1070    ALOGV("getDuration");
1071    sp<MediaPlayerBase> p = getPlayer();
1072    if (p == 0) return UNKNOWN_ERROR;
1073    status_t ret = p->getDuration(msec);
1074    if (ret == NO_ERROR) {
1075        ALOGV("[%d] getDuration = %d", mConnId, *msec);
1076    } else {
1077        ALOGE("getDuration returned %d", ret);
1078    }
1079    return ret;
1080}
1081
1082status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1083    ALOGV("setNextPlayer");
1084    Mutex::Autolock l(mLock);
1085    sp<Client> c = static_cast<Client*>(player.get());
1086    mNextClient = c;
1087
1088    if (c != NULL) {
1089        if (mAudioOutput != NULL) {
1090            mAudioOutput->setNextOutput(c->mAudioOutput);
1091        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1092            ALOGE("no current audio output");
1093        }
1094
1095        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1096            mPlayer->setNextPlayer(mNextClient->getPlayer());
1097        }
1098    }
1099
1100    return OK;
1101}
1102
1103status_t MediaPlayerService::Client::seekTo(int msec)
1104{
1105    ALOGV("[%d] seekTo(%d)", mConnId, msec);
1106    sp<MediaPlayerBase> p = getPlayer();
1107    if (p == 0) return UNKNOWN_ERROR;
1108    return p->seekTo(msec);
1109}
1110
1111status_t MediaPlayerService::Client::reset()
1112{
1113    ALOGV("[%d] reset", mConnId);
1114    mRetransmitEndpointValid = false;
1115    sp<MediaPlayerBase> p = getPlayer();
1116    if (p == 0) return UNKNOWN_ERROR;
1117    return p->reset();
1118}
1119
1120status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1121{
1122    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1123    // TODO: for hardware output, call player instead
1124    Mutex::Autolock l(mLock);
1125    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1126    return NO_ERROR;
1127}
1128
1129status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1130{
1131    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1132    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1133    if (mAudioAttributes == NULL) {
1134        return NO_MEMORY;
1135    }
1136    unmarshallAudioAttributes(parcel, mAudioAttributes);
1137
1138    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1139            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1140            mAudioAttributes->tags);
1141
1142    if (mAudioOutput != 0) {
1143        mAudioOutput->setAudioAttributes(mAudioAttributes);
1144    }
1145    return NO_ERROR;
1146}
1147
1148status_t MediaPlayerService::Client::setLooping(int loop)
1149{
1150    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1151    mLoop = loop;
1152    sp<MediaPlayerBase> p = getPlayer();
1153    if (p != 0) return p->setLooping(loop);
1154    return NO_ERROR;
1155}
1156
1157status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1158{
1159    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1160
1161    // for hardware output, call player instead
1162    sp<MediaPlayerBase> p = getPlayer();
1163    {
1164      Mutex::Autolock l(mLock);
1165      if (p != 0 && p->hardwareOutput()) {
1166          MediaPlayerHWInterface* hwp =
1167                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1168          return hwp->setVolume(leftVolume, rightVolume);
1169      } else {
1170          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1171          return NO_ERROR;
1172      }
1173    }
1174
1175    return NO_ERROR;
1176}
1177
1178status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1179{
1180    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1181    Mutex::Autolock l(mLock);
1182    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1183    return NO_ERROR;
1184}
1185
1186status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1187{
1188    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1189    Mutex::Autolock l(mLock);
1190    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1191    return NO_ERROR;
1192}
1193
1194status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1195    ALOGV("[%d] setParameter(%d)", mConnId, key);
1196    switch (key) {
1197    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1198    {
1199        Mutex::Autolock l(mLock);
1200        return setAudioAttributes_l(request);
1201    }
1202    default:
1203        sp<MediaPlayerBase> p = getPlayer();
1204        if (p == 0) { return UNKNOWN_ERROR; }
1205        return p->setParameter(key, request);
1206    }
1207}
1208
1209status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1210    ALOGV("[%d] getParameter(%d)", mConnId, key);
1211    sp<MediaPlayerBase> p = getPlayer();
1212    if (p == 0) return UNKNOWN_ERROR;
1213    return p->getParameter(key, reply);
1214}
1215
1216status_t MediaPlayerService::Client::setRetransmitEndpoint(
1217        const struct sockaddr_in* endpoint) {
1218
1219    if (NULL != endpoint) {
1220        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1221        uint16_t p = ntohs(endpoint->sin_port);
1222        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1223                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1224    } else {
1225        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1226    }
1227
1228    sp<MediaPlayerBase> p = getPlayer();
1229
1230    // Right now, the only valid time to set a retransmit endpoint is before
1231    // player selection has been made (since the presence or absence of a
1232    // retransmit endpoint is going to determine which player is selected during
1233    // setDataSource).
1234    if (p != 0) return INVALID_OPERATION;
1235
1236    if (NULL != endpoint) {
1237        mRetransmitEndpoint = *endpoint;
1238        mRetransmitEndpointValid = true;
1239    } else {
1240        mRetransmitEndpointValid = false;
1241    }
1242
1243    return NO_ERROR;
1244}
1245
1246status_t MediaPlayerService::Client::getRetransmitEndpoint(
1247        struct sockaddr_in* endpoint)
1248{
1249    if (NULL == endpoint)
1250        return BAD_VALUE;
1251
1252    sp<MediaPlayerBase> p = getPlayer();
1253
1254    if (p != NULL)
1255        return p->getRetransmitEndpoint(endpoint);
1256
1257    if (!mRetransmitEndpointValid)
1258        return NO_INIT;
1259
1260    *endpoint = mRetransmitEndpoint;
1261
1262    return NO_ERROR;
1263}
1264
1265void MediaPlayerService::Client::notify(
1266        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1267{
1268    Client* client = static_cast<Client*>(cookie);
1269    if (client == NULL) {
1270        return;
1271    }
1272
1273    sp<IMediaPlayerClient> c;
1274    {
1275        Mutex::Autolock l(client->mLock);
1276        c = client->mClient;
1277        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1278            if (client->mAudioOutput != NULL)
1279                client->mAudioOutput->switchToNextOutput();
1280            client->mNextClient->start();
1281            if (client->mNextClient->mClient != NULL) {
1282                client->mNextClient->mClient->notify(
1283                        MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1284            }
1285        }
1286    }
1287
1288    if (MEDIA_INFO == msg &&
1289        MEDIA_INFO_METADATA_UPDATE == ext1) {
1290        const media::Metadata::Type metadata_type = ext2;
1291
1292        if(client->shouldDropMetadata(metadata_type)) {
1293            return;
1294        }
1295
1296        // Update the list of metadata that have changed. getMetadata
1297        // also access mMetadataUpdated and clears it.
1298        client->addNewMetadataUpdate(metadata_type);
1299    }
1300
1301    if (c != NULL) {
1302        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1303        c->notify(msg, ext1, ext2, obj);
1304    }
1305}
1306
1307
1308bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1309{
1310    Mutex::Autolock lock(mLock);
1311
1312    if (findMetadata(mMetadataDrop, code)) {
1313        return true;
1314    }
1315
1316    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1317        return false;
1318    } else {
1319        return true;
1320    }
1321}
1322
1323
1324void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1325    Mutex::Autolock lock(mLock);
1326    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1327        mMetadataUpdated.add(metadata_type);
1328    }
1329}
1330
1331#if CALLBACK_ANTAGONIZER
1332const int Antagonizer::interval = 10000; // 10 msecs
1333
1334Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1335    mExit(false), mActive(false), mClient(client), mCb(cb)
1336{
1337    createThread(callbackThread, this);
1338}
1339
1340void Antagonizer::kill()
1341{
1342    Mutex::Autolock _l(mLock);
1343    mActive = false;
1344    mExit = true;
1345    mCondition.wait(mLock);
1346}
1347
1348int Antagonizer::callbackThread(void* user)
1349{
1350    ALOGD("Antagonizer started");
1351    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1352    while (!p->mExit) {
1353        if (p->mActive) {
1354            ALOGV("send event");
1355            p->mCb(p->mClient, 0, 0, 0);
1356        }
1357        usleep(interval);
1358    }
1359    Mutex::Autolock _l(p->mLock);
1360    p->mCondition.signal();
1361    ALOGD("Antagonizer stopped");
1362    return 0;
1363}
1364#endif
1365
1366#undef LOG_TAG
1367#define LOG_TAG "AudioSink"
1368MediaPlayerService::AudioOutput::AudioOutput(audio_session_t sessionId, int uid, int pid,
1369        const audio_attributes_t* attr)
1370    : mCallback(NULL),
1371      mCallbackCookie(NULL),
1372      mCallbackData(NULL),
1373      mStreamType(AUDIO_STREAM_MUSIC),
1374      mLeftVolume(1.0),
1375      mRightVolume(1.0),
1376      mPlaybackRate(AUDIO_PLAYBACK_RATE_DEFAULT),
1377      mSampleRateHz(0),
1378      mMsecsPerFrame(0),
1379      mFrameSize(0),
1380      mSessionId(sessionId),
1381      mUid(uid),
1382      mPid(pid),
1383      mSendLevel(0.0),
1384      mAuxEffectId(0),
1385      mFlags(AUDIO_OUTPUT_FLAG_NONE)
1386{
1387    ALOGV("AudioOutput(%d)", sessionId);
1388    if (attr != NULL) {
1389        mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1390        if (mAttributes != NULL) {
1391            memcpy(mAttributes, attr, sizeof(audio_attributes_t));
1392            mStreamType = audio_attributes_to_stream_type(attr);
1393        }
1394    } else {
1395        mAttributes = NULL;
1396    }
1397
1398    setMinBufferCount();
1399}
1400
1401MediaPlayerService::AudioOutput::~AudioOutput()
1402{
1403    close();
1404    free(mAttributes);
1405    delete mCallbackData;
1406}
1407
1408//static
1409void MediaPlayerService::AudioOutput::setMinBufferCount()
1410{
1411    char value[PROPERTY_VALUE_MAX];
1412    if (property_get("ro.kernel.qemu", value, 0)) {
1413        mIsOnEmulator = true;
1414        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1415    }
1416}
1417
1418// static
1419bool MediaPlayerService::AudioOutput::isOnEmulator()
1420{
1421    setMinBufferCount(); // benign race wrt other threads
1422    return mIsOnEmulator;
1423}
1424
1425// static
1426int MediaPlayerService::AudioOutput::getMinBufferCount()
1427{
1428    setMinBufferCount(); // benign race wrt other threads
1429    return mMinBufferCount;
1430}
1431
1432ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1433{
1434    Mutex::Autolock lock(mLock);
1435    if (mTrack == 0) return NO_INIT;
1436    return mTrack->frameCount() * mFrameSize;
1437}
1438
1439ssize_t MediaPlayerService::AudioOutput::frameCount() const
1440{
1441    Mutex::Autolock lock(mLock);
1442    if (mTrack == 0) return NO_INIT;
1443    return mTrack->frameCount();
1444}
1445
1446ssize_t MediaPlayerService::AudioOutput::channelCount() const
1447{
1448    Mutex::Autolock lock(mLock);
1449    if (mTrack == 0) return NO_INIT;
1450    return mTrack->channelCount();
1451}
1452
1453ssize_t MediaPlayerService::AudioOutput::frameSize() const
1454{
1455    Mutex::Autolock lock(mLock);
1456    if (mTrack == 0) return NO_INIT;
1457    return mFrameSize;
1458}
1459
1460uint32_t MediaPlayerService::AudioOutput::latency () const
1461{
1462    Mutex::Autolock lock(mLock);
1463    if (mTrack == 0) return 0;
1464    return mTrack->latency();
1465}
1466
1467float MediaPlayerService::AudioOutput::msecsPerFrame() const
1468{
1469    Mutex::Autolock lock(mLock);
1470    return mMsecsPerFrame;
1471}
1472
1473status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1474{
1475    Mutex::Autolock lock(mLock);
1476    if (mTrack == 0) return NO_INIT;
1477    return mTrack->getPosition(position);
1478}
1479
1480status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1481{
1482    Mutex::Autolock lock(mLock);
1483    if (mTrack == 0) return NO_INIT;
1484    return mTrack->getTimestamp(ts);
1485}
1486
1487// TODO: Remove unnecessary calls to getPlayedOutDurationUs()
1488// as it acquires locks and may query the audio driver.
1489//
1490// Some calls could conceivably retrieve extrapolated data instead of
1491// accessing getTimestamp() or getPosition() every time a data buffer with
1492// a media time is received.
1493//
1494// Calculate duration of played samples if played at normal rate (i.e., 1.0).
1495int64_t MediaPlayerService::AudioOutput::getPlayedOutDurationUs(int64_t nowUs) const
1496{
1497    Mutex::Autolock lock(mLock);
1498    if (mTrack == 0 || mSampleRateHz == 0) {
1499        return 0;
1500    }
1501
1502    uint32_t numFramesPlayed;
1503    int64_t numFramesPlayedAt;
1504    AudioTimestamp ts;
1505    static const int64_t kStaleTimestamp100ms = 100000;
1506
1507    status_t res = mTrack->getTimestamp(ts);
1508    if (res == OK) {                 // case 1: mixing audio tracks and offloaded tracks.
1509        numFramesPlayed = ts.mPosition;
1510        numFramesPlayedAt = ts.mTime.tv_sec * 1000000LL + ts.mTime.tv_nsec / 1000;
1511        const int64_t timestampAge = nowUs - numFramesPlayedAt;
1512        if (timestampAge > kStaleTimestamp100ms) {
1513            // This is an audio FIXME.
1514            // getTimestamp returns a timestamp which may come from audio mixing threads.
1515            // After pausing, the MixerThread may go idle, thus the mTime estimate may
1516            // become stale. Assuming that the MixerThread runs 20ms, with FastMixer at 5ms,
1517            // the max latency should be about 25ms with an average around 12ms (to be verified).
1518            // For safety we use 100ms.
1519            ALOGV("getTimestamp: returned stale timestamp nowUs(%lld) numFramesPlayedAt(%lld)",
1520                    (long long)nowUs, (long long)numFramesPlayedAt);
1521            numFramesPlayedAt = nowUs - kStaleTimestamp100ms;
1522        }
1523        //ALOGD("getTimestamp: OK %d %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1524    } else if (res == WOULD_BLOCK) { // case 2: transitory state on start of a new track
1525        numFramesPlayed = 0;
1526        numFramesPlayedAt = nowUs;
1527        //ALOGD("getTimestamp: WOULD_BLOCK %d %lld",
1528        //        numFramesPlayed, (long long)numFramesPlayedAt);
1529    } else {                         // case 3: transitory at new track or audio fast tracks.
1530        res = mTrack->getPosition(&numFramesPlayed);
1531        CHECK_EQ(res, (status_t)OK);
1532        numFramesPlayedAt = nowUs;
1533        numFramesPlayedAt += 1000LL * mTrack->latency() / 2; /* XXX */
1534        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1535    }
1536
1537    // CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
1538    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
1539    int64_t durationUs = (int64_t)((int32_t)numFramesPlayed * 1000000LL / mSampleRateHz)
1540            + nowUs - numFramesPlayedAt;
1541    if (durationUs < 0) {
1542        // Occurs when numFramesPlayed position is very small and the following:
1543        // (1) In case 1, the time nowUs is computed before getTimestamp() is called and
1544        //     numFramesPlayedAt is greater than nowUs by time more than numFramesPlayed.
1545        // (2) In case 3, using getPosition and adding mAudioSink->latency() to
1546        //     numFramesPlayedAt, by a time amount greater than numFramesPlayed.
1547        //
1548        // Both of these are transitory conditions.
1549        ALOGV("getPlayedOutDurationUs: negative duration %lld set to zero", (long long)durationUs);
1550        durationUs = 0;
1551    }
1552    ALOGV("getPlayedOutDurationUs(%lld) nowUs(%lld) frames(%u) framesAt(%lld)",
1553            (long long)durationUs, (long long)nowUs, numFramesPlayed, (long long)numFramesPlayedAt);
1554    return durationUs;
1555}
1556
1557status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1558{
1559    Mutex::Autolock lock(mLock);
1560    if (mTrack == 0) return NO_INIT;
1561    ExtendedTimestamp ets;
1562    status_t status = mTrack->getTimestamp(&ets);
1563    if (status == OK || status == WOULD_BLOCK) {
1564        *frameswritten = (uint32_t)ets.mPosition[ExtendedTimestamp::LOCATION_CLIENT];
1565    }
1566    return status;
1567}
1568
1569status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1570{
1571    Mutex::Autolock lock(mLock);
1572    if (mTrack == 0) return NO_INIT;
1573    return mTrack->setParameters(keyValuePairs);
1574}
1575
1576String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1577{
1578    Mutex::Autolock lock(mLock);
1579    if (mTrack == 0) return String8::empty();
1580    return mTrack->getParameters(keys);
1581}
1582
1583void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1584    Mutex::Autolock lock(mLock);
1585    if (attributes == NULL) {
1586        free(mAttributes);
1587        mAttributes = NULL;
1588    } else {
1589        if (mAttributes == NULL) {
1590            mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1591        }
1592        memcpy(mAttributes, attributes, sizeof(audio_attributes_t));
1593        mStreamType = audio_attributes_to_stream_type(attributes);
1594    }
1595}
1596
1597void MediaPlayerService::AudioOutput::setAudioStreamType(audio_stream_type_t streamType)
1598{
1599    Mutex::Autolock lock(mLock);
1600    // do not allow direct stream type modification if attributes have been set
1601    if (mAttributes == NULL) {
1602        mStreamType = streamType;
1603    }
1604}
1605
1606void MediaPlayerService::AudioOutput::deleteRecycledTrack_l()
1607{
1608    ALOGV("deleteRecycledTrack_l");
1609    if (mRecycledTrack != 0) {
1610
1611        if (mCallbackData != NULL) {
1612            mCallbackData->setOutput(NULL);
1613            mCallbackData->endTrackSwitch();
1614        }
1615
1616        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1617            int32_t msec = 0;
1618            if (!mRecycledTrack->stopped()) { // check if active
1619                 (void)mRecycledTrack->pendingDuration(&msec);
1620            }
1621            mRecycledTrack->stop(); // ensure full data drain
1622            ALOGD("deleting recycled track, waiting for data drain (%d msec)", msec);
1623            if (msec > 0) {
1624                static const int32_t WAIT_LIMIT_MS = 3000;
1625                if (msec > WAIT_LIMIT_MS) {
1626                    msec = WAIT_LIMIT_MS;
1627                }
1628                usleep(msec * 1000LL);
1629            }
1630        }
1631        // An offloaded track isn't flushed because the STREAM_END is reported
1632        // slightly prematurely to allow time for the gapless track switch
1633        // but this means that if we decide not to recycle the track there
1634        // could be a small amount of residual data still playing. We leave
1635        // AudioFlinger to drain the track.
1636
1637        mRecycledTrack.clear();
1638        close_l();
1639        delete mCallbackData;
1640        mCallbackData = NULL;
1641    }
1642}
1643
1644void MediaPlayerService::AudioOutput::close_l()
1645{
1646    mTrack.clear();
1647}
1648
1649status_t MediaPlayerService::AudioOutput::open(
1650        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1651        audio_format_t format, int bufferCount,
1652        AudioCallback cb, void *cookie,
1653        audio_output_flags_t flags,
1654        const audio_offload_info_t *offloadInfo,
1655        bool doNotReconnect,
1656        uint32_t suggestedFrameCount)
1657{
1658    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1659                format, bufferCount, mSessionId, flags);
1660
1661    // offloading is only supported in callback mode for now.
1662    // offloadInfo must be present if offload flag is set
1663    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1664            ((cb == NULL) || (offloadInfo == NULL))) {
1665        return BAD_VALUE;
1666    }
1667
1668    // compute frame count for the AudioTrack internal buffer
1669    size_t frameCount;
1670    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1671        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1672    } else {
1673        // try to estimate the buffer processing fetch size from AudioFlinger.
1674        // framesPerBuffer is approximate and generally correct, except when it's not :-).
1675        uint32_t afSampleRate;
1676        size_t afFrameCount;
1677        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1678            return NO_INIT;
1679        }
1680        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1681            return NO_INIT;
1682        }
1683        const size_t framesPerBuffer =
1684                (unsigned long long)sampleRate * afFrameCount / afSampleRate;
1685
1686        if (bufferCount == 0) {
1687            // use suggestedFrameCount
1688            bufferCount = (suggestedFrameCount + framesPerBuffer - 1) / framesPerBuffer;
1689        }
1690        // Check argument bufferCount against the mininum buffer count
1691        if (bufferCount != 0 && bufferCount < mMinBufferCount) {
1692            ALOGV("bufferCount (%d) increased to %d", bufferCount, mMinBufferCount);
1693            bufferCount = mMinBufferCount;
1694        }
1695        // if frameCount is 0, then AudioTrack will get frame count from AudioFlinger
1696        // which will be the minimum size permitted.
1697        frameCount = bufferCount * framesPerBuffer;
1698    }
1699
1700    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1701        channelMask = audio_channel_out_mask_from_count(channelCount);
1702        if (0 == channelMask) {
1703            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1704            return NO_INIT;
1705        }
1706    }
1707
1708    Mutex::Autolock lock(mLock);
1709    mCallback = cb;
1710    mCallbackCookie = cookie;
1711
1712    // Check whether we can recycle the track
1713    bool reuse = false;
1714    bool bothOffloaded = false;
1715
1716    if (mRecycledTrack != 0) {
1717        // check whether we are switching between two offloaded tracks
1718        bothOffloaded = (flags & mRecycledTrack->getFlags()
1719                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1720
1721        // check if the existing track can be reused as-is, or if a new track needs to be created.
1722        reuse = true;
1723
1724        if ((mCallbackData == NULL && mCallback != NULL) ||
1725                (mCallbackData != NULL && mCallback == NULL)) {
1726            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1727            ALOGV("can't chain callback and write");
1728            reuse = false;
1729        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1730                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1731            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1732                  mRecycledTrack->getSampleRate(), sampleRate,
1733                  mRecycledTrack->channelCount(), channelCount);
1734            reuse = false;
1735        } else if (flags != mFlags) {
1736            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1737            reuse = false;
1738        } else if (mRecycledTrack->format() != format) {
1739            reuse = false;
1740        }
1741    } else {
1742        ALOGV("no track available to recycle");
1743    }
1744
1745    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1746
1747    // If we can't recycle and both tracks are offloaded
1748    // we must close the previous output before opening a new one
1749    if (bothOffloaded && !reuse) {
1750        ALOGV("both offloaded and not recycling");
1751        deleteRecycledTrack_l();
1752    }
1753
1754    sp<AudioTrack> t;
1755    CallbackData *newcbd = NULL;
1756
1757    // We don't attempt to create a new track if we are recycling an
1758    // offloaded track. But, if we are recycling a non-offloaded or we
1759    // are switching where one is offloaded and one isn't then we create
1760    // the new track in advance so that we can read additional stream info
1761
1762    if (!(reuse && bothOffloaded)) {
1763        ALOGV("creating new AudioTrack");
1764
1765        if (mCallback != NULL) {
1766            newcbd = new CallbackData(this);
1767            t = new AudioTrack(
1768                    mStreamType,
1769                    sampleRate,
1770                    format,
1771                    channelMask,
1772                    frameCount,
1773                    flags,
1774                    CallbackWrapper,
1775                    newcbd,
1776                    0,  // notification frames
1777                    mSessionId,
1778                    AudioTrack::TRANSFER_CALLBACK,
1779                    offloadInfo,
1780                    mUid,
1781                    mPid,
1782                    mAttributes,
1783                    doNotReconnect);
1784        } else {
1785            // TODO: Due to buffer memory concerns, we use a max target playback speed
1786            // based on mPlaybackRate at the time of open (instead of kMaxRequiredSpeed),
1787            // also clamping the target speed to 1.0 <= targetSpeed <= kMaxRequiredSpeed.
1788            const float targetSpeed =
1789                    std::min(std::max(mPlaybackRate.mSpeed, 1.0f), kMaxRequiredSpeed);
1790            ALOGW_IF(targetSpeed != mPlaybackRate.mSpeed,
1791                    "track target speed:%f clamped from playback speed:%f",
1792                    targetSpeed, mPlaybackRate.mSpeed);
1793            t = new AudioTrack(
1794                    mStreamType,
1795                    sampleRate,
1796                    format,
1797                    channelMask,
1798                    frameCount,
1799                    flags,
1800                    NULL, // callback
1801                    NULL, // user data
1802                    0, // notification frames
1803                    mSessionId,
1804                    AudioTrack::TRANSFER_DEFAULT,
1805                    NULL, // offload info
1806                    mUid,
1807                    mPid,
1808                    mAttributes,
1809                    doNotReconnect,
1810                    targetSpeed);
1811        }
1812
1813        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1814            ALOGE("Unable to create audio track");
1815            delete newcbd;
1816            // t goes out of scope, so reference count drops to zero
1817            return NO_INIT;
1818        } else {
1819            // successful AudioTrack initialization implies a legacy stream type was generated
1820            // from the audio attributes
1821            mStreamType = t->streamType();
1822        }
1823    }
1824
1825    if (reuse) {
1826        CHECK(mRecycledTrack != NULL);
1827
1828        if (!bothOffloaded) {
1829            if (mRecycledTrack->frameCount() != t->frameCount()) {
1830                ALOGV("framecount differs: %zu/%zu frames",
1831                      mRecycledTrack->frameCount(), t->frameCount());
1832                reuse = false;
1833            }
1834        }
1835
1836        if (reuse) {
1837            ALOGV("chaining to next output and recycling track");
1838            close_l();
1839            mTrack = mRecycledTrack;
1840            mRecycledTrack.clear();
1841            if (mCallbackData != NULL) {
1842                mCallbackData->setOutput(this);
1843            }
1844            delete newcbd;
1845            return OK;
1846        }
1847    }
1848
1849    // we're not going to reuse the track, unblock and flush it
1850    // this was done earlier if both tracks are offloaded
1851    if (!bothOffloaded) {
1852        deleteRecycledTrack_l();
1853    }
1854
1855    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1856
1857    mCallbackData = newcbd;
1858    ALOGV("setVolume");
1859    t->setVolume(mLeftVolume, mRightVolume);
1860
1861    mSampleRateHz = sampleRate;
1862    mFlags = flags;
1863    mMsecsPerFrame = 1E3f / (mPlaybackRate.mSpeed * sampleRate);
1864    mFrameSize = t->frameSize();
1865    mTrack = t;
1866
1867    status_t res = NO_ERROR;
1868    // Note some output devices may give us a direct track even though we don't specify it.
1869    // Example: Line application b/17459982.
1870    if ((t->getFlags() & (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD | AUDIO_OUTPUT_FLAG_DIRECT)) == 0) {
1871        res = t->setPlaybackRate(mPlaybackRate);
1872        if (res == NO_ERROR) {
1873            t->setAuxEffectSendLevel(mSendLevel);
1874            res = t->attachAuxEffect(mAuxEffectId);
1875        }
1876    }
1877    ALOGV("open() DONE status %d", res);
1878    return res;
1879}
1880
1881status_t MediaPlayerService::AudioOutput::start()
1882{
1883    ALOGV("start");
1884    Mutex::Autolock lock(mLock);
1885    if (mCallbackData != NULL) {
1886        mCallbackData->endTrackSwitch();
1887    }
1888    if (mTrack != 0) {
1889        mTrack->setVolume(mLeftVolume, mRightVolume);
1890        mTrack->setAuxEffectSendLevel(mSendLevel);
1891        return mTrack->start();
1892    }
1893    return NO_INIT;
1894}
1895
1896void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1897    Mutex::Autolock lock(mLock);
1898    mNextOutput = nextOutput;
1899}
1900
1901void MediaPlayerService::AudioOutput::switchToNextOutput() {
1902    ALOGV("switchToNextOutput");
1903
1904    // Try to acquire the callback lock before moving track (without incurring deadlock).
1905    const unsigned kMaxSwitchTries = 100;
1906    Mutex::Autolock lock(mLock);
1907    for (unsigned tries = 0;;) {
1908        if (mTrack == 0) {
1909            return;
1910        }
1911        if (mNextOutput != NULL && mNextOutput != this) {
1912            if (mCallbackData != NULL) {
1913                // two alternative approaches
1914#if 1
1915                CallbackData *callbackData = mCallbackData;
1916                mLock.unlock();
1917                // proper acquisition sequence
1918                callbackData->lock();
1919                mLock.lock();
1920                // Caution: it is unlikely that someone deleted our callback or changed our target
1921                if (callbackData != mCallbackData || mNextOutput == NULL || mNextOutput == this) {
1922                    // fatal if we are starved out.
1923                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
1924                            "switchToNextOutput() cannot obtain correct lock sequence");
1925                    callbackData->unlock();
1926                    continue;
1927                }
1928                callbackData->mSwitching = true; // begin track switch
1929#else
1930                // tryBeginTrackSwitch() returns false if the callback has the lock.
1931                if (!mCallbackData->tryBeginTrackSwitch()) {
1932                    // fatal if we are starved out.
1933                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
1934                            "switchToNextOutput() cannot obtain callback lock");
1935                    mLock.unlock();
1936                    usleep(5 * 1000 /* usec */); // allow callback to use AudioOutput
1937                    mLock.lock();
1938                    continue;
1939                }
1940#endif
1941            }
1942
1943            Mutex::Autolock nextLock(mNextOutput->mLock);
1944
1945            // If the next output track is not NULL, then it has been
1946            // opened already for playback.
1947            // This is possible even without the next player being started,
1948            // for example, the next player could be prepared and seeked.
1949            //
1950            // Presuming it isn't advisable to force the track over.
1951             if (mNextOutput->mTrack == NULL) {
1952                ALOGD("Recycling track for gapless playback");
1953                delete mNextOutput->mCallbackData;
1954                mNextOutput->mCallbackData = mCallbackData;
1955                mNextOutput->mRecycledTrack = mTrack;
1956                mNextOutput->mSampleRateHz = mSampleRateHz;
1957                mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1958                mNextOutput->mFlags = mFlags;
1959                mNextOutput->mFrameSize = mFrameSize;
1960                close_l();
1961                mCallbackData = NULL;  // destruction handled by mNextOutput
1962            } else {
1963                ALOGW("Ignoring gapless playback because next player has already started");
1964                // remove track in case resource needed for future players.
1965                if (mCallbackData != NULL) {
1966                    mCallbackData->endTrackSwitch();  // release lock for callbacks before close.
1967                }
1968                close_l();
1969            }
1970        }
1971        break;
1972    }
1973}
1974
1975ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size, bool blocking)
1976{
1977    Mutex::Autolock lock(mLock);
1978    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1979
1980    //ALOGV("write(%p, %u)", buffer, size);
1981    if (mTrack != 0) {
1982        return mTrack->write(buffer, size, blocking);
1983    }
1984    return NO_INIT;
1985}
1986
1987void MediaPlayerService::AudioOutput::stop()
1988{
1989    ALOGV("stop");
1990    Mutex::Autolock lock(mLock);
1991    if (mTrack != 0) mTrack->stop();
1992}
1993
1994void MediaPlayerService::AudioOutput::flush()
1995{
1996    ALOGV("flush");
1997    Mutex::Autolock lock(mLock);
1998    if (mTrack != 0) mTrack->flush();
1999}
2000
2001void MediaPlayerService::AudioOutput::pause()
2002{
2003    ALOGV("pause");
2004    Mutex::Autolock lock(mLock);
2005    if (mTrack != 0) mTrack->pause();
2006}
2007
2008void MediaPlayerService::AudioOutput::close()
2009{
2010    ALOGV("close");
2011    sp<AudioTrack> track;
2012    {
2013        Mutex::Autolock lock(mLock);
2014        track = mTrack;
2015        close_l(); // clears mTrack
2016    }
2017    // destruction of the track occurs outside of mutex.
2018}
2019
2020void MediaPlayerService::AudioOutput::setVolume(float left, float right)
2021{
2022    ALOGV("setVolume(%f, %f)", left, right);
2023    Mutex::Autolock lock(mLock);
2024    mLeftVolume = left;
2025    mRightVolume = right;
2026    if (mTrack != 0) {
2027        mTrack->setVolume(left, right);
2028    }
2029}
2030
2031status_t MediaPlayerService::AudioOutput::setPlaybackRate(const AudioPlaybackRate &rate)
2032{
2033    ALOGV("setPlaybackRate(%f %f %d %d)",
2034                rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
2035    Mutex::Autolock lock(mLock);
2036    if (mTrack == 0) {
2037        // remember rate so that we can set it when the track is opened
2038        mPlaybackRate = rate;
2039        return OK;
2040    }
2041    status_t res = mTrack->setPlaybackRate(rate);
2042    if (res != NO_ERROR) {
2043        return res;
2044    }
2045    // rate.mSpeed is always greater than 0 if setPlaybackRate succeeded
2046    CHECK_GT(rate.mSpeed, 0.f);
2047    mPlaybackRate = rate;
2048    if (mSampleRateHz != 0) {
2049        mMsecsPerFrame = 1E3f / (rate.mSpeed * mSampleRateHz);
2050    }
2051    return res;
2052}
2053
2054status_t MediaPlayerService::AudioOutput::getPlaybackRate(AudioPlaybackRate *rate)
2055{
2056    ALOGV("setPlaybackRate");
2057    Mutex::Autolock lock(mLock);
2058    if (mTrack == 0) {
2059        return NO_INIT;
2060    }
2061    *rate = mTrack->getPlaybackRate();
2062    return NO_ERROR;
2063}
2064
2065status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
2066{
2067    ALOGV("setAuxEffectSendLevel(%f)", level);
2068    Mutex::Autolock lock(mLock);
2069    mSendLevel = level;
2070    if (mTrack != 0) {
2071        return mTrack->setAuxEffectSendLevel(level);
2072    }
2073    return NO_ERROR;
2074}
2075
2076status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
2077{
2078    ALOGV("attachAuxEffect(%d)", effectId);
2079    Mutex::Autolock lock(mLock);
2080    mAuxEffectId = effectId;
2081    if (mTrack != 0) {
2082        return mTrack->attachAuxEffect(effectId);
2083    }
2084    return NO_ERROR;
2085}
2086
2087// static
2088void MediaPlayerService::AudioOutput::CallbackWrapper(
2089        int event, void *cookie, void *info) {
2090    //ALOGV("callbackwrapper");
2091    CallbackData *data = (CallbackData*)cookie;
2092    // lock to ensure we aren't caught in the middle of a track switch.
2093    data->lock();
2094    AudioOutput *me = data->getOutput();
2095    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
2096    if (me == NULL) {
2097        // no output set, likely because the track was scheduled to be reused
2098        // by another player, but the format turned out to be incompatible.
2099        data->unlock();
2100        if (buffer != NULL) {
2101            buffer->size = 0;
2102        }
2103        return;
2104    }
2105
2106    switch(event) {
2107    case AudioTrack::EVENT_MORE_DATA: {
2108        size_t actualSize = (*me->mCallback)(
2109                me, buffer->raw, buffer->size, me->mCallbackCookie,
2110                CB_EVENT_FILL_BUFFER);
2111
2112        // Log when no data is returned from the callback.
2113        // (1) We may have no data (especially with network streaming sources).
2114        // (2) We may have reached the EOS and the audio track is not stopped yet.
2115        // Note that AwesomePlayer/AudioPlayer will only return zero size when it reaches the EOS.
2116        // NuPlayerRenderer will return zero when it doesn't have data (it doesn't block to fill).
2117        //
2118        // This is a benign busy-wait, with the next data request generated 10 ms or more later;
2119        // nevertheless for power reasons, we don't want to see too many of these.
2120
2121        ALOGV_IF(actualSize == 0 && buffer->size > 0, "callbackwrapper: empty buffer returned");
2122
2123        buffer->size = actualSize;
2124        } break;
2125
2126    case AudioTrack::EVENT_STREAM_END:
2127        // currently only occurs for offloaded callbacks
2128        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
2129        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
2130                me->mCallbackCookie, CB_EVENT_STREAM_END);
2131        break;
2132
2133    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
2134        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
2135        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
2136                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
2137        break;
2138
2139    case AudioTrack::EVENT_UNDERRUN:
2140        // This occurs when there is no data available, typically
2141        // when there is a failure to supply data to the AudioTrack.  It can also
2142        // occur in non-offloaded mode when the audio device comes out of standby.
2143        //
2144        // If an AudioTrack underruns it outputs silence. Since this happens suddenly
2145        // it may sound like an audible pop or glitch.
2146        //
2147        // The underrun event is sent once per track underrun; the condition is reset
2148        // when more data is sent to the AudioTrack.
2149        ALOGD("callbackwrapper: EVENT_UNDERRUN (discarded)");
2150        break;
2151
2152    default:
2153        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
2154    }
2155
2156    data->unlock();
2157}
2158
2159audio_session_t MediaPlayerService::AudioOutput::getSessionId() const
2160{
2161    Mutex::Autolock lock(mLock);
2162    return mSessionId;
2163}
2164
2165uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
2166{
2167    Mutex::Autolock lock(mLock);
2168    if (mTrack == 0) return 0;
2169    return mTrack->getSampleRate();
2170}
2171
2172int64_t MediaPlayerService::AudioOutput::getBufferDurationInUs() const
2173{
2174    Mutex::Autolock lock(mLock);
2175    if (mTrack == 0) {
2176        return 0;
2177    }
2178    int64_t duration;
2179    if (mTrack->getBufferDurationInUs(&duration) != OK) {
2180        return 0;
2181    }
2182    return duration;
2183}
2184
2185////////////////////////////////////////////////////////////////////////////////
2186
2187struct CallbackThread : public Thread {
2188    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
2189                   MediaPlayerBase::AudioSink::AudioCallback cb,
2190                   void *cookie);
2191
2192protected:
2193    virtual ~CallbackThread();
2194
2195    virtual bool threadLoop();
2196
2197private:
2198    wp<MediaPlayerBase::AudioSink> mSink;
2199    MediaPlayerBase::AudioSink::AudioCallback mCallback;
2200    void *mCookie;
2201    void *mBuffer;
2202    size_t mBufferSize;
2203
2204    CallbackThread(const CallbackThread &);
2205    CallbackThread &operator=(const CallbackThread &);
2206};
2207
2208CallbackThread::CallbackThread(
2209        const wp<MediaPlayerBase::AudioSink> &sink,
2210        MediaPlayerBase::AudioSink::AudioCallback cb,
2211        void *cookie)
2212    : mSink(sink),
2213      mCallback(cb),
2214      mCookie(cookie),
2215      mBuffer(NULL),
2216      mBufferSize(0) {
2217}
2218
2219CallbackThread::~CallbackThread() {
2220    if (mBuffer) {
2221        free(mBuffer);
2222        mBuffer = NULL;
2223    }
2224}
2225
2226bool CallbackThread::threadLoop() {
2227    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
2228    if (sink == NULL) {
2229        return false;
2230    }
2231
2232    if (mBuffer == NULL) {
2233        mBufferSize = sink->bufferSize();
2234        mBuffer = malloc(mBufferSize);
2235    }
2236
2237    size_t actualSize =
2238        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
2239                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
2240
2241    if (actualSize > 0) {
2242        sink->write(mBuffer, actualSize);
2243        // Could return false on sink->write() error or short count.
2244        // Not necessarily appropriate but would work for AudioCache behavior.
2245    }
2246
2247    return true;
2248}
2249
2250////////////////////////////////////////////////////////////////////////////////
2251
2252void MediaPlayerService::addBatteryData(uint32_t params)
2253{
2254    Mutex::Autolock lock(mLock);
2255
2256    int32_t time = systemTime() / 1000000L;
2257
2258    // change audio output devices. This notification comes from AudioFlinger
2259    if ((params & kBatteryDataSpeakerOn)
2260            || (params & kBatteryDataOtherAudioDeviceOn)) {
2261
2262        int deviceOn[NUM_AUDIO_DEVICES];
2263        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2264            deviceOn[i] = 0;
2265        }
2266
2267        if ((params & kBatteryDataSpeakerOn)
2268                && (params & kBatteryDataOtherAudioDeviceOn)) {
2269            deviceOn[SPEAKER_AND_OTHER] = 1;
2270        } else if (params & kBatteryDataSpeakerOn) {
2271            deviceOn[SPEAKER] = 1;
2272        } else {
2273            deviceOn[OTHER_AUDIO_DEVICE] = 1;
2274        }
2275
2276        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2277            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
2278
2279                if (mBatteryAudio.refCount > 0) { // if playing audio
2280                    if (!deviceOn[i]) {
2281                        mBatteryAudio.lastTime[i] += time;
2282                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2283                        mBatteryAudio.lastTime[i] = 0;
2284                    } else {
2285                        mBatteryAudio.lastTime[i] = 0 - time;
2286                    }
2287                }
2288
2289                mBatteryAudio.deviceOn[i] = deviceOn[i];
2290            }
2291        }
2292        return;
2293    }
2294
2295    // an audio stream is started
2296    if (params & kBatteryDataAudioFlingerStart) {
2297        // record the start time only if currently no other audio
2298        // is being played
2299        if (mBatteryAudio.refCount == 0) {
2300            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2301                if (mBatteryAudio.deviceOn[i]) {
2302                    mBatteryAudio.lastTime[i] -= time;
2303                }
2304            }
2305        }
2306
2307        mBatteryAudio.refCount ++;
2308        return;
2309
2310    } else if (params & kBatteryDataAudioFlingerStop) {
2311        if (mBatteryAudio.refCount <= 0) {
2312            ALOGW("Battery track warning: refCount is <= 0");
2313            return;
2314        }
2315
2316        // record the stop time only if currently this is the only
2317        // audio being played
2318        if (mBatteryAudio.refCount == 1) {
2319            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2320                if (mBatteryAudio.deviceOn[i]) {
2321                    mBatteryAudio.lastTime[i] += time;
2322                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2323                    mBatteryAudio.lastTime[i] = 0;
2324                }
2325            }
2326        }
2327
2328        mBatteryAudio.refCount --;
2329        return;
2330    }
2331
2332    int uid = IPCThreadState::self()->getCallingUid();
2333    if (uid == AID_MEDIA) {
2334        return;
2335    }
2336    int index = mBatteryData.indexOfKey(uid);
2337
2338    if (index < 0) { // create a new entry for this UID
2339        BatteryUsageInfo info;
2340        info.audioTotalTime = 0;
2341        info.videoTotalTime = 0;
2342        info.audioLastTime = 0;
2343        info.videoLastTime = 0;
2344        info.refCount = 0;
2345
2346        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2347            ALOGE("Battery track error: no memory for new app");
2348            return;
2349        }
2350    }
2351
2352    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2353
2354    if (params & kBatteryDataCodecStarted) {
2355        if (params & kBatteryDataTrackAudio) {
2356            info.audioLastTime -= time;
2357            info.refCount ++;
2358        }
2359        if (params & kBatteryDataTrackVideo) {
2360            info.videoLastTime -= time;
2361            info.refCount ++;
2362        }
2363    } else {
2364        if (info.refCount == 0) {
2365            ALOGW("Battery track warning: refCount is already 0");
2366            return;
2367        } else if (info.refCount < 0) {
2368            ALOGE("Battery track error: refCount < 0");
2369            mBatteryData.removeItem(uid);
2370            return;
2371        }
2372
2373        if (params & kBatteryDataTrackAudio) {
2374            info.audioLastTime += time;
2375            info.refCount --;
2376        }
2377        if (params & kBatteryDataTrackVideo) {
2378            info.videoLastTime += time;
2379            info.refCount --;
2380        }
2381
2382        // no stream is being played by this UID
2383        if (info.refCount == 0) {
2384            info.audioTotalTime += info.audioLastTime;
2385            info.audioLastTime = 0;
2386            info.videoTotalTime += info.videoLastTime;
2387            info.videoLastTime = 0;
2388        }
2389    }
2390}
2391
2392status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2393    Mutex::Autolock lock(mLock);
2394
2395    // audio output devices usage
2396    int32_t time = systemTime() / 1000000L; //in ms
2397    int32_t totalTime;
2398
2399    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2400        totalTime = mBatteryAudio.totalTime[i];
2401
2402        if (mBatteryAudio.deviceOn[i]
2403            && (mBatteryAudio.lastTime[i] != 0)) {
2404                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2405                totalTime += tmpTime;
2406        }
2407
2408        reply->writeInt32(totalTime);
2409        // reset the total time
2410        mBatteryAudio.totalTime[i] = 0;
2411   }
2412
2413    // codec usage
2414    BatteryUsageInfo info;
2415    int size = mBatteryData.size();
2416
2417    reply->writeInt32(size);
2418    int i = 0;
2419
2420    while (i < size) {
2421        info = mBatteryData.valueAt(i);
2422
2423        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2424        reply->writeInt32(info.audioTotalTime);
2425        reply->writeInt32(info.videoTotalTime);
2426
2427        info.audioTotalTime = 0;
2428        info.videoTotalTime = 0;
2429
2430        // remove the UID entry where no stream is being played
2431        if (info.refCount <= 0) {
2432            mBatteryData.removeItemsAt(i);
2433            size --;
2434            i --;
2435        }
2436        i++;
2437    }
2438    return NO_ERROR;
2439}
2440} // namespace android
2441