GenericSource.cpp revision 474d7c778b63aa33dcf25a92e23a52c1c47f0ac1 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17//#define LOG_NDEBUG 0
18#define LOG_TAG "GenericSource"
19
20#include "GenericSource.h"
21
22#include "AnotherPacketSource.h"
23
24#include <media/IMediaHTTPService.h>
25#include <media/stagefright/foundation/ABuffer.h>
26#include <media/stagefright/foundation/ADebug.h>
27#include <media/stagefright/foundation/AMessage.h>
28#include <media/stagefright/DataSource.h>
29#include <media/stagefright/FileSource.h>
30#include <media/stagefright/MediaBuffer.h>
31#include <media/stagefright/MediaDefs.h>
32#include <media/stagefright/MediaExtractor.h>
33#include <media/stagefright/MediaSource.h>
34#include <media/stagefright/MetaData.h>
35#include <media/stagefright/Utils.h>
36#include "../../libstagefright/include/DRMExtractor.h"
37#include "../../libstagefright/include/NuCachedSource2.h"
38#include "../../libstagefright/include/WVMExtractor.h"
39#include "../../libstagefright/include/HTTPBase.h"
40
41namespace android {
42
43NuPlayer::GenericSource::GenericSource(
44        const sp<AMessage> &notify,
45        bool uidValid,
46        uid_t uid)
47    : Source(notify),
48      mAudioTimeUs(0),
49      mAudioLastDequeueTimeUs(0),
50      mVideoTimeUs(0),
51      mVideoLastDequeueTimeUs(0),
52      mFetchSubtitleDataGeneration(0),
53      mFetchTimedTextDataGeneration(0),
54      mDurationUs(0ll),
55      mAudioIsVorbis(false),
56      mIsWidevine(false),
57      mUIDValid(uidValid),
58      mUID(uid),
59      mFd(-1),
60      mDrmManagerClient(NULL),
61      mMetaDataSize(-1ll),
62      mBitrate(-1ll),
63      mPollBufferingGeneration(0),
64      mPendingReadBufferTypes(0) {
65    resetDataSource();
66    DataSource::RegisterDefaultSniffers();
67}
68
69void NuPlayer::GenericSource::resetDataSource() {
70    mHTTPService.clear();
71    mHttpSource.clear();
72    mUri.clear();
73    mUriHeaders.clear();
74    if (mFd >= 0) {
75        close(mFd);
76        mFd = -1;
77    }
78    mOffset = 0;
79    mLength = 0;
80    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
81    mDecryptHandle = NULL;
82    mDrmManagerClient = NULL;
83    mStarted = false;
84    mStopRead = true;
85}
86
87status_t NuPlayer::GenericSource::setDataSource(
88        const sp<IMediaHTTPService> &httpService,
89        const char *url,
90        const KeyedVector<String8, String8> *headers) {
91    resetDataSource();
92
93    mHTTPService = httpService;
94    mUri = url;
95
96    if (headers) {
97        mUriHeaders = *headers;
98    }
99
100    // delay data source creation to prepareAsync() to avoid blocking
101    // the calling thread in setDataSource for any significant time.
102    return OK;
103}
104
105status_t NuPlayer::GenericSource::setDataSource(
106        int fd, int64_t offset, int64_t length) {
107    resetDataSource();
108
109    mFd = dup(fd);
110    mOffset = offset;
111    mLength = length;
112
113    // delay data source creation to prepareAsync() to avoid blocking
114    // the calling thread in setDataSource for any significant time.
115    return OK;
116}
117
118sp<MetaData> NuPlayer::GenericSource::getFileFormatMeta() const {
119    return mFileMeta;
120}
121
122status_t NuPlayer::GenericSource::initFromDataSource() {
123    sp<MediaExtractor> extractor;
124
125    CHECK(mDataSource != NULL);
126
127    if (mIsWidevine) {
128        String8 mimeType;
129        float confidence;
130        sp<AMessage> dummy;
131        bool success;
132
133        success = SniffWVM(mDataSource, &mimeType, &confidence, &dummy);
134        if (!success
135                || strcasecmp(
136                    mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM)) {
137            ALOGE("unsupported widevine mime: %s", mimeType.string());
138            return UNKNOWN_ERROR;
139        }
140
141        mWVMExtractor = new WVMExtractor(mDataSource);
142        mWVMExtractor->setAdaptiveStreamingMode(true);
143        if (mUIDValid) {
144            mWVMExtractor->setUID(mUID);
145        }
146        extractor = mWVMExtractor;
147    } else {
148        extractor = MediaExtractor::Create(mDataSource,
149                mSniffedMIME.empty() ? NULL: mSniffedMIME.c_str());
150    }
151
152    if (extractor == NULL) {
153        return UNKNOWN_ERROR;
154    }
155
156    if (extractor->getDrmFlag()) {
157        checkDrmStatus(mDataSource);
158    }
159
160    mFileMeta = extractor->getMetaData();
161    if (mFileMeta != NULL) {
162        int64_t duration;
163        if (mFileMeta->findInt64(kKeyDuration, &duration)) {
164            mDurationUs = duration;
165        }
166    }
167
168    int32_t totalBitrate = 0;
169
170    size_t numtracks = extractor->countTracks();
171    if (numtracks == 0) {
172        return UNKNOWN_ERROR;
173    }
174
175    for (size_t i = 0; i < numtracks; ++i) {
176        sp<MediaSource> track = extractor->getTrack(i);
177
178        sp<MetaData> meta = extractor->getTrackMetaData(i);
179
180        const char *mime;
181        CHECK(meta->findCString(kKeyMIMEType, &mime));
182
183        // Do the string compare immediately with "mime",
184        // we can't assume "mime" would stay valid after another
185        // extractor operation, some extractors might modify meta
186        // during getTrack() and make it invalid.
187        if (!strncasecmp(mime, "audio/", 6)) {
188            if (mAudioTrack.mSource == NULL) {
189                mAudioTrack.mIndex = i;
190                mAudioTrack.mSource = track;
191                mAudioTrack.mPackets =
192                    new AnotherPacketSource(mAudioTrack.mSource->getFormat());
193
194                if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) {
195                    mAudioIsVorbis = true;
196                } else {
197                    mAudioIsVorbis = false;
198                }
199            }
200        } else if (!strncasecmp(mime, "video/", 6)) {
201            if (mVideoTrack.mSource == NULL) {
202                mVideoTrack.mIndex = i;
203                mVideoTrack.mSource = track;
204                mVideoTrack.mPackets =
205                    new AnotherPacketSource(mVideoTrack.mSource->getFormat());
206
207                // check if the source requires secure buffers
208                int32_t secure;
209                if (meta->findInt32(kKeyRequiresSecureBuffers, &secure)
210                        && secure) {
211                    mIsWidevine = true;
212                    if (mUIDValid) {
213                        extractor->setUID(mUID);
214                    }
215                }
216            }
217        }
218
219        if (track != NULL) {
220            mSources.push(track);
221            int64_t durationUs;
222            if (meta->findInt64(kKeyDuration, &durationUs)) {
223                if (durationUs > mDurationUs) {
224                    mDurationUs = durationUs;
225                }
226            }
227
228            int32_t bitrate;
229            if (totalBitrate >= 0 && meta->findInt32(kKeyBitRate, &bitrate)) {
230                totalBitrate += bitrate;
231            } else {
232                totalBitrate = -1;
233            }
234        }
235    }
236
237    mBitrate = totalBitrate;
238
239    return OK;
240}
241
242void NuPlayer::GenericSource::checkDrmStatus(const sp<DataSource>& dataSource) {
243    dataSource->getDrmInfo(mDecryptHandle, &mDrmManagerClient);
244    if (mDecryptHandle != NULL) {
245        CHECK(mDrmManagerClient);
246        if (RightsStatus::RIGHTS_VALID != mDecryptHandle->status) {
247            sp<AMessage> msg = dupNotify();
248            msg->setInt32("what", kWhatDrmNoLicense);
249            msg->post();
250        }
251    }
252}
253
254int64_t NuPlayer::GenericSource::getLastReadPosition() {
255    if (mAudioTrack.mSource != NULL) {
256        return mAudioTimeUs;
257    } else if (mVideoTrack.mSource != NULL) {
258        return mVideoTimeUs;
259    } else {
260        return 0;
261    }
262}
263
264status_t NuPlayer::GenericSource::setBuffers(
265        bool audio, Vector<MediaBuffer *> &buffers) {
266    if (mIsWidevine && !audio) {
267        return mVideoTrack.mSource->setBuffers(buffers);
268    }
269    return INVALID_OPERATION;
270}
271
272NuPlayer::GenericSource::~GenericSource() {
273    if (mLooper != NULL) {
274        mLooper->unregisterHandler(id());
275        mLooper->stop();
276    }
277    resetDataSource();
278}
279
280void NuPlayer::GenericSource::prepareAsync() {
281    if (mLooper == NULL) {
282        mLooper = new ALooper;
283        mLooper->setName("generic");
284        mLooper->start();
285
286        mLooper->registerHandler(this);
287    }
288
289    sp<AMessage> msg = new AMessage(kWhatPrepareAsync, id());
290    msg->post();
291}
292
293void NuPlayer::GenericSource::onPrepareAsync() {
294    // delayed data source creation
295    if (mDataSource == NULL) {
296        if (!mUri.empty()) {
297            const char* uri = mUri.c_str();
298            mIsWidevine = !strncasecmp(uri, "widevine://", 11);
299
300            if (!strncasecmp("http://", uri, 7)
301                    || !strncasecmp("https://", uri, 8)
302                    || mIsWidevine) {
303                mHttpSource = DataSource::CreateMediaHTTP(mHTTPService);
304                if (mHttpSource == NULL) {
305                    ALOGE("Failed to create http source!");
306                    notifyPreparedAndCleanup(UNKNOWN_ERROR);
307                    return;
308                }
309            }
310
311            mDataSource = DataSource::CreateFromURI(
312                   mHTTPService, uri, &mUriHeaders, &mContentType,
313                   static_cast<HTTPBase *>(mHttpSource.get()));
314        } else {
315            // set to false first, if the extractor
316            // comes back as secure, set it to true then.
317            mIsWidevine = false;
318
319            mDataSource = new FileSource(mFd, mOffset, mLength);
320            mFd = -1;
321        }
322
323        if (mDataSource == NULL) {
324            ALOGE("Failed to create data source!");
325            notifyPreparedAndCleanup(UNKNOWN_ERROR);
326            return;
327        }
328
329        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
330            mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get());
331        }
332
333        if (mIsWidevine || mCachedSource != NULL) {
334            schedulePollBuffering();
335        }
336    }
337
338    // check initial caching status
339    status_t err = prefillCacheIfNecessary();
340    if (err != OK) {
341        if (err == -EAGAIN) {
342            (new AMessage(kWhatPrepareAsync, id()))->post(200000);
343        } else {
344            ALOGE("Failed to prefill data cache!");
345            notifyPreparedAndCleanup(UNKNOWN_ERROR);
346        }
347        return;
348    }
349
350    // init extrator from data source
351    err = initFromDataSource();
352
353    if (err != OK) {
354        ALOGE("Failed to init from data source!");
355        notifyPreparedAndCleanup(err);
356        return;
357    }
358
359    if (mVideoTrack.mSource != NULL) {
360        sp<MetaData> meta = doGetFormatMeta(false /* audio */);
361        sp<AMessage> msg = new AMessage;
362        err = convertMetaDataToMessage(meta, &msg);
363        if(err != OK) {
364            notifyPreparedAndCleanup(err);
365            return;
366        }
367        notifyVideoSizeChanged(msg);
368    }
369
370    notifyFlagsChanged(
371            (mIsWidevine ? FLAG_SECURE : 0)
372            | FLAG_CAN_PAUSE
373            | FLAG_CAN_SEEK_BACKWARD
374            | FLAG_CAN_SEEK_FORWARD
375            | FLAG_CAN_SEEK);
376
377    notifyPrepared();
378}
379
380void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
381    if (err != OK) {
382        mMetaDataSize = -1ll;
383        mContentType = "";
384        mSniffedMIME = "";
385        mDataSource.clear();
386        mCachedSource.clear();
387        mHttpSource.clear();
388
389        cancelPollBuffering();
390    }
391    notifyPrepared(err);
392}
393
394status_t NuPlayer::GenericSource::prefillCacheIfNecessary() {
395    CHECK(mDataSource != NULL);
396
397    if (mCachedSource == NULL) {
398        // no prefill if the data source is not cached
399        return OK;
400    }
401
402    // We're not doing this for streams that appear to be audio-only
403    // streams to ensure that even low bandwidth streams start
404    // playing back fairly instantly.
405    if (!strncasecmp(mContentType.string(), "audio/", 6)) {
406        return OK;
407    }
408
409    // We're going to prefill the cache before trying to instantiate
410    // the extractor below, as the latter is an operation that otherwise
411    // could block on the datasource for a significant amount of time.
412    // During that time we'd be unable to abort the preparation phase
413    // without this prefill.
414
415    // Initially make sure we have at least 192 KB for the sniff
416    // to complete without blocking.
417    static const size_t kMinBytesForSniffing = 192 * 1024;
418    static const size_t kDefaultMetaSize = 200000;
419
420    status_t finalStatus;
421
422    size_t cachedDataRemaining =
423            mCachedSource->approxDataRemaining(&finalStatus);
424
425    if (finalStatus != OK || (mMetaDataSize >= 0
426            && (off64_t)cachedDataRemaining >= mMetaDataSize)) {
427        ALOGV("stop caching, status %d, "
428                "metaDataSize %lld, cachedDataRemaining %zu",
429                finalStatus, mMetaDataSize, cachedDataRemaining);
430        return OK;
431    }
432
433    ALOGV("now cached %zu bytes of data", cachedDataRemaining);
434
435    if (mMetaDataSize < 0
436            && cachedDataRemaining >= kMinBytesForSniffing) {
437        String8 tmp;
438        float confidence;
439        sp<AMessage> meta;
440        if (!mCachedSource->sniff(&tmp, &confidence, &meta)) {
441            return UNKNOWN_ERROR;
442        }
443
444        // We successfully identified the file's extractor to
445        // be, remember this mime type so we don't have to
446        // sniff it again when we call MediaExtractor::Create()
447        mSniffedMIME = tmp.string();
448
449        if (meta == NULL
450                || !meta->findInt64("meta-data-size",
451                        reinterpret_cast<int64_t*>(&mMetaDataSize))) {
452            mMetaDataSize = kDefaultMetaSize;
453        }
454
455        if (mMetaDataSize < 0ll) {
456            ALOGE("invalid metaDataSize = %lld bytes", mMetaDataSize);
457            return UNKNOWN_ERROR;
458        }
459    }
460
461    return -EAGAIN;
462}
463
464void NuPlayer::GenericSource::start() {
465    ALOGI("start");
466
467    mStopRead = false;
468    if (mAudioTrack.mSource != NULL) {
469        CHECK_EQ(mAudioTrack.mSource->start(), (status_t)OK);
470
471        postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
472    }
473
474    if (mVideoTrack.mSource != NULL) {
475        CHECK_EQ(mVideoTrack.mSource->start(), (status_t)OK);
476
477        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
478    }
479
480    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
481    mStarted = true;
482}
483
484void NuPlayer::GenericSource::stop() {
485    // nothing to do, just account for DRM playback status
486    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
487    mStarted = false;
488    if (mIsWidevine) {
489        // For a widevine source we need to prevent any further reads.
490        sp<AMessage> msg = new AMessage(kWhatStopWidevine, id());
491        sp<AMessage> response;
492        (void) msg->postAndAwaitResponse(&response);
493    }
494}
495
496void NuPlayer::GenericSource::pause() {
497    // nothing to do, just account for DRM playback status
498    setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
499    mStarted = false;
500}
501
502void NuPlayer::GenericSource::resume() {
503    // nothing to do, just account for DRM playback status
504    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
505    mStarted = true;
506}
507
508void NuPlayer::GenericSource::disconnect() {
509    if (mDataSource != NULL) {
510        // disconnect data source
511        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
512            static_cast<NuCachedSource2 *>(mDataSource.get())->disconnect();
513        }
514    } else if (mHttpSource != NULL) {
515        static_cast<HTTPBase *>(mHttpSource.get())->disconnect();
516    }
517}
518
519void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
520    if (mDecryptHandle != NULL) {
521        mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
522    }
523    mSubtitleTrack.mPackets = new AnotherPacketSource(NULL);
524    mTimedTextTrack.mPackets = new AnotherPacketSource(NULL);
525}
526
527status_t NuPlayer::GenericSource::feedMoreTSData() {
528    return OK;
529}
530
531void NuPlayer::GenericSource::schedulePollBuffering() {
532    sp<AMessage> msg = new AMessage(kWhatPollBuffering, id());
533    msg->setInt32("generation", mPollBufferingGeneration);
534    msg->post(1000000ll);
535}
536
537void NuPlayer::GenericSource::cancelPollBuffering() {
538    ++mPollBufferingGeneration;
539}
540
541void NuPlayer::GenericSource::notifyBufferingUpdate(int percentage) {
542    sp<AMessage> msg = dupNotify();
543    msg->setInt32("what", kWhatBufferingUpdate);
544    msg->setInt32("percentage", percentage);
545    msg->post();
546}
547
548void NuPlayer::GenericSource::onPollBuffering() {
549    status_t finalStatus = UNKNOWN_ERROR;
550    int64_t cachedDurationUs = 0ll;
551
552    if (mCachedSource != NULL) {
553        size_t cachedDataRemaining =
554                mCachedSource->approxDataRemaining(&finalStatus);
555
556        if (finalStatus == OK) {
557            off64_t size;
558            int64_t bitrate = 0ll;
559            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
560                bitrate = size * 8000000ll / mDurationUs;
561            } else if (mBitrate > 0) {
562                bitrate = mBitrate;
563            }
564            if (bitrate > 0) {
565                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
566            }
567        }
568    } else if (mWVMExtractor != NULL) {
569        cachedDurationUs
570            = mWVMExtractor->getCachedDurationUs(&finalStatus);
571    }
572
573    if (finalStatus == ERROR_END_OF_STREAM) {
574        notifyBufferingUpdate(100);
575        cancelPollBuffering();
576        return;
577    } else if (cachedDurationUs > 0ll && mDurationUs > 0ll) {
578        int percentage = 100.0 * cachedDurationUs / mDurationUs;
579        if (percentage > 100) {
580            percentage = 100;
581        }
582
583        notifyBufferingUpdate(percentage);
584    }
585
586    schedulePollBuffering();
587}
588
589
590void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
591    switch (msg->what()) {
592      case kWhatPrepareAsync:
593      {
594          onPrepareAsync();
595          break;
596      }
597      case kWhatFetchSubtitleData:
598      {
599          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
600                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
601          break;
602      }
603
604      case kWhatFetchTimedTextData:
605      {
606          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
607                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
608          break;
609      }
610
611      case kWhatSendSubtitleData:
612      {
613          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
614                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
615          break;
616      }
617
618      case kWhatSendTimedTextData:
619      {
620          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
621                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
622          break;
623      }
624
625      case kWhatChangeAVSource:
626      {
627          int32_t trackIndex;
628          CHECK(msg->findInt32("trackIndex", &trackIndex));
629          const sp<MediaSource> source = mSources.itemAt(trackIndex);
630
631          Track* track;
632          const char *mime;
633          media_track_type trackType, counterpartType;
634          sp<MetaData> meta = source->getFormat();
635          meta->findCString(kKeyMIMEType, &mime);
636          if (!strncasecmp(mime, "audio/", 6)) {
637              track = &mAudioTrack;
638              trackType = MEDIA_TRACK_TYPE_AUDIO;
639              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
640          } else {
641              CHECK(!strncasecmp(mime, "video/", 6));
642              track = &mVideoTrack;
643              trackType = MEDIA_TRACK_TYPE_VIDEO;
644              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
645          }
646
647
648          if (track->mSource != NULL) {
649              track->mSource->stop();
650          }
651          track->mSource = source;
652          track->mSource->start();
653          track->mIndex = trackIndex;
654
655          int64_t timeUs, actualTimeUs;
656          const bool formatChange = true;
657          if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
658              timeUs = mAudioLastDequeueTimeUs;
659          } else {
660              timeUs = mVideoLastDequeueTimeUs;
661          }
662          readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
663          readBuffer(counterpartType, -1, NULL, formatChange);
664          ALOGV("timeUs %lld actualTimeUs %lld", timeUs, actualTimeUs);
665
666          break;
667      }
668      case kWhatPollBuffering:
669      {
670          int32_t generation;
671          CHECK(msg->findInt32("generation", &generation));
672          if (generation == mPollBufferingGeneration) {
673              onPollBuffering();
674          }
675          break;
676      }
677
678      case kWhatGetFormat:
679      {
680          onGetFormatMeta(msg);
681          break;
682      }
683
684      case kWhatGetSelectedTrack:
685      {
686          onGetSelectedTrack(msg);
687          break;
688      }
689
690      case kWhatSelectTrack:
691      {
692          onSelectTrack(msg);
693          break;
694      }
695
696      case kWhatSeek:
697      {
698          onSeek(msg);
699          break;
700      }
701
702      case kWhatReadBuffer:
703      {
704          onReadBuffer(msg);
705          break;
706      }
707
708      case kWhatStopWidevine:
709      {
710          // mStopRead is only used for Widevine to prevent the video source
711          // from being read while the associated video decoder is shutting down.
712          mStopRead = true;
713          if (mVideoTrack.mSource != NULL) {
714              mVideoTrack.mPackets->clear();
715          }
716          sp<AMessage> response = new AMessage;
717          uint32_t replyID;
718          CHECK(msg->senderAwaitsResponse(&replyID));
719          response->postReply(replyID);
720          break;
721      }
722      default:
723          Source::onMessageReceived(msg);
724          break;
725    }
726}
727
728void NuPlayer::GenericSource::fetchTextData(
729        uint32_t sendWhat,
730        media_track_type type,
731        int32_t curGen,
732        sp<AnotherPacketSource> packets,
733        sp<AMessage> msg) {
734    int32_t msgGeneration;
735    CHECK(msg->findInt32("generation", &msgGeneration));
736    if (msgGeneration != curGen) {
737        // stale
738        return;
739    }
740
741    int32_t avail;
742    if (packets->hasBufferAvailable(&avail)) {
743        return;
744    }
745
746    int64_t timeUs;
747    CHECK(msg->findInt64("timeUs", &timeUs));
748
749    int64_t subTimeUs;
750    readBuffer(type, timeUs, &subTimeUs);
751
752    int64_t delayUs = subTimeUs - timeUs;
753    if (msg->what() == kWhatFetchSubtitleData) {
754        const int64_t oneSecUs = 1000000ll;
755        delayUs -= oneSecUs;
756    }
757    sp<AMessage> msg2 = new AMessage(sendWhat, id());
758    msg2->setInt32("generation", msgGeneration);
759    msg2->post(delayUs < 0 ? 0 : delayUs);
760}
761
762void NuPlayer::GenericSource::sendTextData(
763        uint32_t what,
764        media_track_type type,
765        int32_t curGen,
766        sp<AnotherPacketSource> packets,
767        sp<AMessage> msg) {
768    int32_t msgGeneration;
769    CHECK(msg->findInt32("generation", &msgGeneration));
770    if (msgGeneration != curGen) {
771        // stale
772        return;
773    }
774
775    int64_t subTimeUs;
776    if (packets->nextBufferTime(&subTimeUs) != OK) {
777        return;
778    }
779
780    int64_t nextSubTimeUs;
781    readBuffer(type, -1, &nextSubTimeUs);
782
783    sp<ABuffer> buffer;
784    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
785    if (dequeueStatus == OK) {
786        sp<AMessage> notify = dupNotify();
787        notify->setInt32("what", what);
788        notify->setBuffer("buffer", buffer);
789        notify->post();
790
791        const int64_t delayUs = nextSubTimeUs - subTimeUs;
792        msg->post(delayUs < 0 ? 0 : delayUs);
793    }
794}
795
796sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
797    sp<AMessage> msg = new AMessage(kWhatGetFormat, id());
798    msg->setInt32("audio", audio);
799
800    sp<AMessage> response;
801    void *format;
802    status_t err = msg->postAndAwaitResponse(&response);
803    if (err == OK && response != NULL) {
804        CHECK(response->findPointer("format", &format));
805        return (MetaData *)format;
806    } else {
807        return NULL;
808    }
809}
810
811void NuPlayer::GenericSource::onGetFormatMeta(sp<AMessage> msg) const {
812    int32_t audio;
813    CHECK(msg->findInt32("audio", &audio));
814
815    sp<AMessage> response = new AMessage;
816    sp<MetaData> format = doGetFormatMeta(audio);
817    response->setPointer("format", format.get());
818
819    uint32_t replyID;
820    CHECK(msg->senderAwaitsResponse(&replyID));
821    response->postReply(replyID);
822}
823
824sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
825    sp<MediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
826
827    if (source == NULL) {
828        return NULL;
829    }
830
831    return source->getFormat();
832}
833
834status_t NuPlayer::GenericSource::dequeueAccessUnit(
835        bool audio, sp<ABuffer> *accessUnit) {
836    Track *track = audio ? &mAudioTrack : &mVideoTrack;
837
838    if (track->mSource == NULL) {
839        return -EWOULDBLOCK;
840    }
841
842    if (mIsWidevine && !audio) {
843        // try to read a buffer as we may not have been able to the last time
844        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
845    }
846
847    status_t finalResult;
848    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
849        return (finalResult == OK ? -EWOULDBLOCK : finalResult);
850    }
851
852    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
853
854    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
855        postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
856    }
857
858    if (result != OK) {
859        if (mSubtitleTrack.mSource != NULL) {
860            mSubtitleTrack.mPackets->clear();
861            mFetchSubtitleDataGeneration++;
862        }
863        if (mTimedTextTrack.mSource != NULL) {
864            mTimedTextTrack.mPackets->clear();
865            mFetchTimedTextDataGeneration++;
866        }
867        return result;
868    }
869
870    int64_t timeUs;
871    status_t eosResult; // ignored
872    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
873    if (audio) {
874        mAudioLastDequeueTimeUs = timeUs;
875    } else {
876        mVideoLastDequeueTimeUs = timeUs;
877    }
878
879    if (mSubtitleTrack.mSource != NULL
880            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
881        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
882        msg->setInt64("timeUs", timeUs);
883        msg->setInt32("generation", mFetchSubtitleDataGeneration);
884        msg->post();
885    }
886
887    if (mTimedTextTrack.mSource != NULL
888            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
889        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
890        msg->setInt64("timeUs", timeUs);
891        msg->setInt32("generation", mFetchTimedTextDataGeneration);
892        msg->post();
893    }
894
895    return result;
896}
897
898status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
899    *durationUs = mDurationUs;
900    return OK;
901}
902
903size_t NuPlayer::GenericSource::getTrackCount() const {
904    return mSources.size();
905}
906
907sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
908    size_t trackCount = mSources.size();
909    if (trackIndex >= trackCount) {
910        return NULL;
911    }
912
913    sp<AMessage> format = new AMessage();
914    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
915
916    const char *mime;
917    CHECK(meta->findCString(kKeyMIMEType, &mime));
918
919    int32_t trackType;
920    if (!strncasecmp(mime, "video/", 6)) {
921        trackType = MEDIA_TRACK_TYPE_VIDEO;
922    } else if (!strncasecmp(mime, "audio/", 6)) {
923        trackType = MEDIA_TRACK_TYPE_AUDIO;
924    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
925        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
926    } else {
927        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
928    }
929    format->setInt32("type", trackType);
930
931    const char *lang;
932    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
933        lang = "und";
934    }
935    format->setString("language", lang);
936
937    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
938        format->setString("mime", mime);
939
940        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
941        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
942        meta->findInt32(kKeyTrackIsDefault, &isDefault);
943        meta->findInt32(kKeyTrackIsForced, &isForced);
944
945        format->setInt32("auto", !!isAutoselect);
946        format->setInt32("default", !!isDefault);
947        format->setInt32("forced", !!isForced);
948    }
949
950    return format;
951}
952
953ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
954    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, id());
955    msg->setInt32("type", type);
956
957    sp<AMessage> response;
958    int32_t index;
959    status_t err = msg->postAndAwaitResponse(&response);
960    if (err == OK && response != NULL) {
961        CHECK(response->findInt32("index", &index));
962        return index;
963    } else {
964        return -1;
965    }
966}
967
968void NuPlayer::GenericSource::onGetSelectedTrack(sp<AMessage> msg) const {
969    int32_t tmpType;
970    CHECK(msg->findInt32("type", &tmpType));
971    media_track_type type = (media_track_type)tmpType;
972
973    sp<AMessage> response = new AMessage;
974    ssize_t index = doGetSelectedTrack(type);
975    response->setInt32("index", index);
976
977    uint32_t replyID;
978    CHECK(msg->senderAwaitsResponse(&replyID));
979    response->postReply(replyID);
980}
981
982ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
983    const Track *track = NULL;
984    switch (type) {
985    case MEDIA_TRACK_TYPE_VIDEO:
986        track = &mVideoTrack;
987        break;
988    case MEDIA_TRACK_TYPE_AUDIO:
989        track = &mAudioTrack;
990        break;
991    case MEDIA_TRACK_TYPE_TIMEDTEXT:
992        track = &mTimedTextTrack;
993        break;
994    case MEDIA_TRACK_TYPE_SUBTITLE:
995        track = &mSubtitleTrack;
996        break;
997    default:
998        break;
999    }
1000
1001    if (track != NULL && track->mSource != NULL) {
1002        return track->mIndex;
1003    }
1004
1005    return -1;
1006}
1007
1008status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select, int64_t timeUs) {
1009    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
1010    sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
1011    msg->setInt32("trackIndex", trackIndex);
1012    msg->setInt32("select", select);
1013    msg->setInt64("timeUs", timeUs);
1014
1015    sp<AMessage> response;
1016    status_t err = msg->postAndAwaitResponse(&response);
1017    if (err == OK && response != NULL) {
1018        CHECK(response->findInt32("err", &err));
1019    }
1020
1021    return err;
1022}
1023
1024void NuPlayer::GenericSource::onSelectTrack(sp<AMessage> msg) {
1025    int32_t trackIndex, select;
1026    int64_t timeUs;
1027    CHECK(msg->findInt32("trackIndex", &trackIndex));
1028    CHECK(msg->findInt32("select", &select));
1029    CHECK(msg->findInt64("timeUs", &timeUs));
1030
1031    sp<AMessage> response = new AMessage;
1032    status_t err = doSelectTrack(trackIndex, select, timeUs);
1033    response->setInt32("err", err);
1034
1035    uint32_t replyID;
1036    CHECK(msg->senderAwaitsResponse(&replyID));
1037    response->postReply(replyID);
1038}
1039
1040status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select, int64_t timeUs) {
1041    if (trackIndex >= mSources.size()) {
1042        return BAD_INDEX;
1043    }
1044
1045    if (!select) {
1046        Track* track = NULL;
1047        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
1048            track = &mSubtitleTrack;
1049            mFetchSubtitleDataGeneration++;
1050        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
1051            track = &mTimedTextTrack;
1052            mFetchTimedTextDataGeneration++;
1053        }
1054        if (track == NULL) {
1055            return INVALID_OPERATION;
1056        }
1057        track->mSource->stop();
1058        track->mSource = NULL;
1059        track->mPackets->clear();
1060        return OK;
1061    }
1062
1063    const sp<MediaSource> source = mSources.itemAt(trackIndex);
1064    sp<MetaData> meta = source->getFormat();
1065    const char *mime;
1066    CHECK(meta->findCString(kKeyMIMEType, &mime));
1067    if (!strncasecmp(mime, "text/", 5)) {
1068        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
1069        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
1070        if (track->mSource != NULL && track->mIndex == trackIndex) {
1071            return OK;
1072        }
1073        track->mIndex = trackIndex;
1074        if (track->mSource != NULL) {
1075            track->mSource->stop();
1076        }
1077        track->mSource = mSources.itemAt(trackIndex);
1078        track->mSource->start();
1079        if (track->mPackets == NULL) {
1080            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
1081        } else {
1082            track->mPackets->clear();
1083            track->mPackets->setFormat(track->mSource->getFormat());
1084
1085        }
1086
1087        if (isSubtitle) {
1088            mFetchSubtitleDataGeneration++;
1089        } else {
1090            mFetchTimedTextDataGeneration++;
1091        }
1092
1093        status_t eosResult; // ignored
1094        if (mSubtitleTrack.mSource != NULL
1095                && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
1096            sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
1097            msg->setInt64("timeUs", timeUs);
1098            msg->setInt32("generation", mFetchSubtitleDataGeneration);
1099            msg->post();
1100        }
1101
1102        if (mTimedTextTrack.mSource != NULL
1103                && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
1104            sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
1105            msg->setInt64("timeUs", timeUs);
1106            msg->setInt32("generation", mFetchTimedTextDataGeneration);
1107            msg->post();
1108        }
1109
1110        return OK;
1111    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
1112        bool audio = !strncasecmp(mime, "audio/", 6);
1113        Track *track = audio ? &mAudioTrack : &mVideoTrack;
1114        if (track->mSource != NULL && track->mIndex == trackIndex) {
1115            return OK;
1116        }
1117
1118        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, id());
1119        msg->setInt32("trackIndex", trackIndex);
1120        msg->post();
1121        return OK;
1122    }
1123
1124    return INVALID_OPERATION;
1125}
1126
1127status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs) {
1128    sp<AMessage> msg = new AMessage(kWhatSeek, id());
1129    msg->setInt64("seekTimeUs", seekTimeUs);
1130
1131    sp<AMessage> response;
1132    status_t err = msg->postAndAwaitResponse(&response);
1133    if (err == OK && response != NULL) {
1134        CHECK(response->findInt32("err", &err));
1135    }
1136
1137    return err;
1138}
1139
1140void NuPlayer::GenericSource::onSeek(sp<AMessage> msg) {
1141    int64_t seekTimeUs;
1142    CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1143
1144    sp<AMessage> response = new AMessage;
1145    status_t err = doSeek(seekTimeUs);
1146    response->setInt32("err", err);
1147
1148    uint32_t replyID;
1149    CHECK(msg->senderAwaitsResponse(&replyID));
1150    response->postReply(replyID);
1151}
1152
1153status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs) {
1154    // If the Widevine source is stopped, do not attempt to read any
1155    // more buffers.
1156    if (mStopRead) {
1157        return INVALID_OPERATION;
1158    }
1159    if (mVideoTrack.mSource != NULL) {
1160        int64_t actualTimeUs;
1161        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, &actualTimeUs);
1162
1163        seekTimeUs = actualTimeUs;
1164        mVideoLastDequeueTimeUs = seekTimeUs;
1165    }
1166
1167    if (mAudioTrack.mSource != NULL) {
1168        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
1169        mAudioLastDequeueTimeUs = seekTimeUs;
1170    }
1171
1172    setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
1173    if (!mStarted) {
1174        setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
1175    }
1176    return OK;
1177}
1178
1179sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
1180        MediaBuffer* mb,
1181        media_track_type trackType,
1182        int64_t /* seekTimeUs */,
1183        int64_t *actualTimeUs) {
1184    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
1185    size_t outLength = mb->range_length();
1186
1187    if (audio && mAudioIsVorbis) {
1188        outLength += sizeof(int32_t);
1189    }
1190
1191    sp<ABuffer> ab;
1192    if (mIsWidevine && !audio) {
1193        // data is already provided in the buffer
1194        ab = new ABuffer(NULL, mb->range_length());
1195        mb->add_ref();
1196        ab->setMediaBufferBase(mb);
1197    } else {
1198        ab = new ABuffer(outLength);
1199        memcpy(ab->data(),
1200               (const uint8_t *)mb->data() + mb->range_offset(),
1201               mb->range_length());
1202    }
1203
1204    if (audio && mAudioIsVorbis) {
1205        int32_t numPageSamples;
1206        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
1207            numPageSamples = -1;
1208        }
1209
1210        uint8_t* abEnd = ab->data() + mb->range_length();
1211        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
1212    }
1213
1214    sp<AMessage> meta = ab->meta();
1215
1216    int64_t timeUs;
1217    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
1218    meta->setInt64("timeUs", timeUs);
1219
1220#if 0
1221    // Temporarily disable pre-roll till we have a full solution to handle
1222    // both single seek and continous seek gracefully.
1223    if (seekTimeUs > timeUs) {
1224        sp<AMessage> extra = new AMessage;
1225        extra->setInt64("resume-at-mediaTimeUs", seekTimeUs);
1226        meta->setMessage("extra", extra);
1227    }
1228#endif
1229
1230    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
1231        const char *mime;
1232        CHECK(mTimedTextTrack.mSource != NULL
1233                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
1234        meta->setString("mime", mime);
1235    }
1236
1237    int64_t durationUs;
1238    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
1239        meta->setInt64("durationUs", durationUs);
1240    }
1241
1242    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
1243        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
1244    }
1245
1246    if (actualTimeUs) {
1247        *actualTimeUs = timeUs;
1248    }
1249
1250    mb->release();
1251    mb = NULL;
1252
1253    return ab;
1254}
1255
1256void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
1257    Mutex::Autolock _l(mReadBufferLock);
1258
1259    if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
1260        mPendingReadBufferTypes |= (1 << trackType);
1261        sp<AMessage> msg = new AMessage(kWhatReadBuffer, id());
1262        msg->setInt32("trackType", trackType);
1263        msg->post();
1264    }
1265}
1266
1267void NuPlayer::GenericSource::onReadBuffer(sp<AMessage> msg) {
1268    int32_t tmpType;
1269    CHECK(msg->findInt32("trackType", &tmpType));
1270    media_track_type trackType = (media_track_type)tmpType;
1271    {
1272        // only protect the variable change, as readBuffer may
1273        // take considerable time.  This may result in one extra
1274        // read being processed, but that is benign.
1275        Mutex::Autolock _l(mReadBufferLock);
1276        mPendingReadBufferTypes &= ~(1 << trackType);
1277    }
1278    readBuffer(trackType);
1279}
1280
1281void NuPlayer::GenericSource::readBuffer(
1282        media_track_type trackType, int64_t seekTimeUs, int64_t *actualTimeUs, bool formatChange) {
1283    // Do not read data if Widevine source is stopped
1284    if (mStopRead) {
1285        return;
1286    }
1287    Track *track;
1288    size_t maxBuffers = 1;
1289    switch (trackType) {
1290        case MEDIA_TRACK_TYPE_VIDEO:
1291            track = &mVideoTrack;
1292            if (mIsWidevine) {
1293                maxBuffers = 2;
1294            }
1295            break;
1296        case MEDIA_TRACK_TYPE_AUDIO:
1297            track = &mAudioTrack;
1298            if (mIsWidevine) {
1299                maxBuffers = 8;
1300            } else {
1301                maxBuffers = 64;
1302            }
1303            break;
1304        case MEDIA_TRACK_TYPE_SUBTITLE:
1305            track = &mSubtitleTrack;
1306            break;
1307        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1308            track = &mTimedTextTrack;
1309            break;
1310        default:
1311            TRESPASS();
1312    }
1313
1314    if (track->mSource == NULL) {
1315        return;
1316    }
1317
1318    if (actualTimeUs) {
1319        *actualTimeUs = seekTimeUs;
1320    }
1321
1322    MediaSource::ReadOptions options;
1323
1324    bool seeking = false;
1325
1326    if (seekTimeUs >= 0) {
1327        options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
1328        seeking = true;
1329    }
1330
1331    if (mIsWidevine && trackType != MEDIA_TRACK_TYPE_AUDIO) {
1332        options.setNonBlocking();
1333    }
1334
1335    for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
1336        MediaBuffer *mbuf;
1337        status_t err = track->mSource->read(&mbuf, &options);
1338
1339        options.clearSeekTo();
1340
1341        if (err == OK) {
1342            int64_t timeUs;
1343            CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs));
1344            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1345                mAudioTimeUs = timeUs;
1346            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1347                mVideoTimeUs = timeUs;
1348            }
1349
1350            // formatChange && seeking: track whose source is changed during selection
1351            // formatChange && !seeking: track whose source is not changed during selection
1352            // !formatChange: normal seek
1353            if ((seeking || formatChange)
1354                    && (trackType == MEDIA_TRACK_TYPE_AUDIO
1355                    || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1356                ATSParser::DiscontinuityType type = (formatChange && seeking)
1357                        ? ATSParser::DISCONTINUITY_FORMATCHANGE
1358                        : ATSParser::DISCONTINUITY_NONE;
1359                track->mPackets->queueDiscontinuity( type, NULL, true /* discard */);
1360            }
1361
1362            sp<ABuffer> buffer = mediaBufferToABuffer(
1363                    mbuf, trackType, seekTimeUs, actualTimeUs);
1364            track->mPackets->queueAccessUnit(buffer);
1365            formatChange = false;
1366            seeking = false;
1367            ++numBuffers;
1368        } else if (err == WOULD_BLOCK) {
1369            break;
1370        } else if (err == INFO_FORMAT_CHANGED) {
1371#if 0
1372            track->mPackets->queueDiscontinuity(
1373                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1374                    NULL,
1375                    false /* discard */);
1376#endif
1377        } else {
1378            track->mPackets->signalEOS(err);
1379            break;
1380        }
1381    }
1382}
1383
1384}  // namespace android
1385