GenericSource.cpp revision e7a1f6c8c18306aa61fd9587811fa20f7937b3c6 
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#include "NuPlayerDrm.h"
22
23#include "AnotherPacketSource.h"
24
25#include <media/IMediaHTTPService.h>
26#include <media/stagefright/foundation/ABuffer.h>
27#include <media/stagefright/foundation/ADebug.h>
28#include <media/stagefright/foundation/AMessage.h>
29#include <media/stagefright/DataSource.h>
30#include <media/stagefright/FileSource.h>
31#include <media/stagefright/MediaBuffer.h>
32#include <media/stagefright/MediaDefs.h>
33#include <media/stagefright/MediaExtractor.h>
34#include <media/stagefright/MediaSource.h>
35#include <media/stagefright/MetaData.h>
36#include <media/stagefright/Utils.h>
37#include "../../libstagefright/include/NuCachedSource2.h"
38#include "../../libstagefright/include/HTTPBase.h"
39
40namespace android {
41
42static const int kLowWaterMarkMs          = 2000;  // 2secs
43static const int kHighWaterMarkMs         = 5000;  // 5secs
44static const int kHighWaterMarkRebufferMs = 15000;  // 15secs
45
46static const int kLowWaterMarkKB  = 40;
47static const int kHighWaterMarkKB = 200;
48
49NuPlayer::GenericSource::GenericSource(
50        const sp<AMessage> &notify,
51        bool uidValid,
52        uid_t uid)
53    : Source(notify),
54      mAudioTimeUs(0),
55      mAudioLastDequeueTimeUs(0),
56      mVideoTimeUs(0),
57      mVideoLastDequeueTimeUs(0),
58      mFetchSubtitleDataGeneration(0),
59      mFetchTimedTextDataGeneration(0),
60      mDurationUs(-1ll),
61      mAudioIsVorbis(false),
62      mIsSecure(false),
63      mIsStreaming(false),
64      mUIDValid(uidValid),
65      mUID(uid),
66      mFd(-1),
67      mBitrate(-1ll),
68      mPendingReadBufferTypes(0) {
69    ALOGV("GenericSource");
70
71    mBufferingMonitor = new BufferingMonitor(notify);
72    resetDataSource();
73}
74
75void NuPlayer::GenericSource::resetDataSource() {
76    ALOGV("resetDataSource");
77
78    mHTTPService.clear();
79    mHttpSource.clear();
80    mUri.clear();
81    mUriHeaders.clear();
82    if (mFd >= 0) {
83        close(mFd);
84        mFd = -1;
85    }
86    mOffset = 0;
87    mLength = 0;
88    mStarted = false;
89    mStopRead = true;
90
91    if (mBufferingMonitorLooper != NULL) {
92        mBufferingMonitorLooper->unregisterHandler(mBufferingMonitor->id());
93        mBufferingMonitorLooper->stop();
94        mBufferingMonitorLooper = NULL;
95    }
96    mBufferingMonitor->stop();
97
98    mIsDrmProtected = false;
99    mIsSecure = false;
100    mMimes.clear();
101}
102
103status_t NuPlayer::GenericSource::setDataSource(
104        const sp<IMediaHTTPService> &httpService,
105        const char *url,
106        const KeyedVector<String8, String8> *headers) {
107    ALOGV("setDataSource url: %s", url);
108
109    resetDataSource();
110
111    mHTTPService = httpService;
112    mUri = url;
113
114    if (headers) {
115        mUriHeaders = *headers;
116    }
117
118    // delay data source creation to prepareAsync() to avoid blocking
119    // the calling thread in setDataSource for any significant time.
120    return OK;
121}
122
123status_t NuPlayer::GenericSource::setDataSource(
124        int fd, int64_t offset, int64_t length) {
125    ALOGV("setDataSource %d/%lld/%lld", fd, (long long)offset, (long long)length);
126
127    resetDataSource();
128
129    mFd = dup(fd);
130    mOffset = offset;
131    mLength = length;
132
133    // delay data source creation to prepareAsync() to avoid blocking
134    // the calling thread in setDataSource for any significant time.
135    return OK;
136}
137
138status_t NuPlayer::GenericSource::setDataSource(const sp<DataSource>& source) {
139    ALOGV("setDataSource (source: %p)", source.get());
140
141    resetDataSource();
142    mDataSource = source;
143    return OK;
144}
145
146sp<MetaData> NuPlayer::GenericSource::getFileFormatMeta() const {
147    return mFileMeta;
148}
149
150status_t NuPlayer::GenericSource::initFromDataSource() {
151    sp<IMediaExtractor> extractor;
152    CHECK(mDataSource != NULL);
153
154    extractor = MediaExtractor::Create(mDataSource, NULL);
155
156    if (extractor == NULL) {
157        return UNKNOWN_ERROR;
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    mMimes.clear();
176
177    for (size_t i = 0; i < numtracks; ++i) {
178        sp<IMediaSource> track = extractor->getTrack(i);
179        if (track == NULL) {
180            continue;
181        }
182
183        sp<MetaData> meta = extractor->getTrackMetaData(i);
184        if (meta == NULL) {
185            ALOGE("no metadata for track %zu", i);
186            return UNKNOWN_ERROR;
187        }
188
189        const char *mime;
190        CHECK(meta->findCString(kKeyMIMEType, &mime));
191
192        ALOGV("initFromDataSource track[%zu]: %s", i, mime);
193
194        // Do the string compare immediately with "mime",
195        // we can't assume "mime" would stay valid after another
196        // extractor operation, some extractors might modify meta
197        // during getTrack() and make it invalid.
198        if (!strncasecmp(mime, "audio/", 6)) {
199            if (mAudioTrack.mSource == NULL) {
200                mAudioTrack.mIndex = i;
201                mAudioTrack.mSource = track;
202                mAudioTrack.mPackets =
203                    new AnotherPacketSource(mAudioTrack.mSource->getFormat());
204
205                if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) {
206                    mAudioIsVorbis = true;
207                } else {
208                    mAudioIsVorbis = false;
209                }
210
211                mMimes.add(String8(mime));
212            }
213        } else if (!strncasecmp(mime, "video/", 6)) {
214            if (mVideoTrack.mSource == NULL) {
215                mVideoTrack.mIndex = i;
216                mVideoTrack.mSource = track;
217                mVideoTrack.mPackets =
218                    new AnotherPacketSource(mVideoTrack.mSource->getFormat());
219
220                // video always at the beginning
221                mMimes.insertAt(String8(mime), 0);
222            }
223        }
224
225        mSources.push(track);
226        int64_t durationUs;
227        if (meta->findInt64(kKeyDuration, &durationUs)) {
228            if (durationUs > mDurationUs) {
229                mDurationUs = durationUs;
230            }
231        }
232
233        int32_t bitrate;
234        if (totalBitrate >= 0 && meta->findInt32(kKeyBitRate, &bitrate)) {
235            totalBitrate += bitrate;
236        } else {
237            totalBitrate = -1;
238        }
239    }
240
241    ALOGV("initFromDataSource mSources.size(): %zu  mIsSecure: %d  mime[0]: %s", mSources.size(),
242            mIsSecure, (mMimes.isEmpty() ? "NONE" : mMimes[0].string()));
243
244    if (mSources.size() == 0) {
245        ALOGE("b/23705695");
246        return UNKNOWN_ERROR;
247    }
248
249    // Modular DRM: The return value doesn't affect source initialization.
250    (void)checkDrmInfo();
251
252    mBitrate = totalBitrate;
253
254    return OK;
255}
256
257status_t NuPlayer::GenericSource::getDefaultBufferingSettings(
258        BufferingSettings* buffering /* nonnull */) {
259    mBufferingMonitor->getDefaultBufferingSettings(buffering);
260    return OK;
261}
262
263status_t NuPlayer::GenericSource::setBufferingSettings(const BufferingSettings& buffering) {
264    return mBufferingMonitor->setBufferingSettings(buffering);
265}
266
267status_t NuPlayer::GenericSource::startSources() {
268    // Start the selected A/V tracks now before we start buffering.
269    // Widevine sources might re-initialize crypto when starting, if we delay
270    // this to start(), all data buffered during prepare would be wasted.
271    // (We don't actually start reading until start().)
272    //
273    // TODO: this logic may no longer be relevant after the removal of widevine
274    // support
275    if (mAudioTrack.mSource != NULL && mAudioTrack.mSource->start() != OK) {
276        ALOGE("failed to start audio track!");
277        return UNKNOWN_ERROR;
278    }
279
280    if (mVideoTrack.mSource != NULL && mVideoTrack.mSource->start() != OK) {
281        ALOGE("failed to start video track!");
282        return UNKNOWN_ERROR;
283    }
284
285    return OK;
286}
287
288int64_t NuPlayer::GenericSource::getLastReadPosition() {
289    if (mAudioTrack.mSource != NULL) {
290        return mAudioTimeUs;
291    } else if (mVideoTrack.mSource != NULL) {
292        return mVideoTimeUs;
293    } else {
294        return 0;
295    }
296}
297
298status_t NuPlayer::GenericSource::setBuffers(
299        bool audio, Vector<MediaBuffer *> &buffers) {
300    if (mIsSecure && !audio && mVideoTrack.mSource != NULL) {
301        return mVideoTrack.mSource->setBuffers(buffers);
302    }
303    return INVALID_OPERATION;
304}
305
306bool NuPlayer::GenericSource::isStreaming() const {
307    return mIsStreaming;
308}
309
310void NuPlayer::GenericSource::setOffloadAudio(bool offload) {
311    mBufferingMonitor->setOffloadAudio(offload);
312}
313
314NuPlayer::GenericSource::~GenericSource() {
315    ALOGV("~GenericSource");
316    if (mLooper != NULL) {
317        mLooper->unregisterHandler(id());
318        mLooper->stop();
319    }
320    resetDataSource();
321}
322
323void NuPlayer::GenericSource::prepareAsync() {
324    ALOGV("prepareAsync: (looper: %d)", (mLooper != NULL));
325
326    if (mLooper == NULL) {
327        mLooper = new ALooper;
328        mLooper->setName("generic");
329        mLooper->start();
330
331        mLooper->registerHandler(this);
332    }
333
334    sp<AMessage> msg = new AMessage(kWhatPrepareAsync, this);
335    msg->post();
336}
337
338void NuPlayer::GenericSource::onPrepareAsync() {
339    ALOGV("onPrepareAsync: mDataSource: %d", (mDataSource != NULL));
340
341    // delayed data source creation
342    if (mDataSource == NULL) {
343        // set to false first, if the extractor
344        // comes back as secure, set it to true then.
345        mIsSecure = false;
346
347        if (!mUri.empty()) {
348            const char* uri = mUri.c_str();
349            String8 contentType;
350
351            if (!strncasecmp("http://", uri, 7) || !strncasecmp("https://", uri, 8)) {
352                mHttpSource = DataSource::CreateMediaHTTP(mHTTPService);
353                if (mHttpSource == NULL) {
354                    ALOGE("Failed to create http source!");
355                    notifyPreparedAndCleanup(UNKNOWN_ERROR);
356                    return;
357                }
358            }
359
360            mDataSource = DataSource::CreateFromURI(
361                   mHTTPService, uri, &mUriHeaders, &contentType,
362                   static_cast<HTTPBase *>(mHttpSource.get()));
363        } else {
364            mDataSource = new FileSource(mFd, mOffset, mLength);
365            mFd = -1;
366        }
367
368        if (mDataSource == NULL) {
369            ALOGE("Failed to create data source!");
370            notifyPreparedAndCleanup(UNKNOWN_ERROR);
371            return;
372        }
373    }
374
375    if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
376        mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get());
377    }
378
379    // For cached streaming cases, we need to wait for enough
380    // buffering before reporting prepared.
381    mIsStreaming = (mCachedSource != NULL);
382
383    // init extractor from data source
384    status_t err = initFromDataSource();
385
386    if (err != OK) {
387        ALOGE("Failed to init from data source!");
388        notifyPreparedAndCleanup(err);
389        return;
390    }
391
392    if (mVideoTrack.mSource != NULL) {
393        sp<MetaData> meta = doGetFormatMeta(false /* audio */);
394        sp<AMessage> msg = new AMessage;
395        err = convertMetaDataToMessage(meta, &msg);
396        if(err != OK) {
397            notifyPreparedAndCleanup(err);
398            return;
399        }
400        notifyVideoSizeChanged(msg);
401    }
402
403    notifyFlagsChanged(
404            // FLAG_SECURE will be known if/when prepareDrm is called by the app
405            // FLAG_PROTECTED will be known if/when prepareDrm is called by the app
406            FLAG_CAN_PAUSE |
407            FLAG_CAN_SEEK_BACKWARD |
408            FLAG_CAN_SEEK_FORWARD |
409            FLAG_CAN_SEEK);
410
411    finishPrepareAsync();
412
413    ALOGV("onPrepareAsync: Done");
414}
415
416void NuPlayer::GenericSource::finishPrepareAsync() {
417    ALOGV("finishPrepareAsync");
418
419    status_t err = startSources();
420    if (err != OK) {
421        ALOGE("Failed to init start data source!");
422        notifyPreparedAndCleanup(err);
423        return;
424    }
425
426    if (mIsStreaming) {
427        if (mBufferingMonitorLooper == NULL) {
428            mBufferingMonitor->prepare(mCachedSource, mDurationUs, mBitrate,
429                    mIsStreaming);
430
431            mBufferingMonitorLooper = new ALooper;
432            mBufferingMonitorLooper->setName("GSBMonitor");
433            mBufferingMonitorLooper->start();
434            mBufferingMonitorLooper->registerHandler(mBufferingMonitor);
435        }
436
437        mBufferingMonitor->ensureCacheIsFetching();
438        mBufferingMonitor->restartPollBuffering();
439    } else {
440        notifyPrepared();
441    }
442}
443
444void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
445    if (err != OK) {
446        {
447            sp<DataSource> dataSource = mDataSource;
448            sp<NuCachedSource2> cachedSource = mCachedSource;
449            sp<DataSource> httpSource = mHttpSource;
450            {
451                Mutex::Autolock _l(mDisconnectLock);
452                mDataSource.clear();
453                mCachedSource.clear();
454                mHttpSource.clear();
455            }
456        }
457        mBitrate = -1;
458
459        mBufferingMonitor->cancelPollBuffering();
460    }
461    notifyPrepared(err);
462}
463
464void NuPlayer::GenericSource::start() {
465    ALOGI("start");
466
467    mStopRead = false;
468    if (mAudioTrack.mSource != NULL) {
469        postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
470    }
471
472    if (mVideoTrack.mSource != NULL) {
473        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
474    }
475
476    mStarted = true;
477
478    (new AMessage(kWhatStart, this))->post();
479}
480
481void NuPlayer::GenericSource::stop() {
482    mStarted = false;
483}
484
485void NuPlayer::GenericSource::pause() {
486    mStarted = false;
487}
488
489void NuPlayer::GenericSource::resume() {
490    mStarted = true;
491
492    (new AMessage(kWhatResume, this))->post();
493}
494
495void NuPlayer::GenericSource::disconnect() {
496    sp<DataSource> dataSource, httpSource;
497    {
498        Mutex::Autolock _l(mDisconnectLock);
499        dataSource = mDataSource;
500        httpSource = mHttpSource;
501    }
502
503    if (dataSource != NULL) {
504        // disconnect data source
505        if (dataSource->flags() & DataSource::kIsCachingDataSource) {
506            static_cast<NuCachedSource2 *>(dataSource.get())->disconnect();
507        }
508    } else if (httpSource != NULL) {
509        static_cast<HTTPBase *>(httpSource.get())->disconnect();
510    }
511}
512
513status_t NuPlayer::GenericSource::feedMoreTSData() {
514    return OK;
515}
516
517void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
518    switch (msg->what()) {
519      case kWhatPrepareAsync:
520      {
521          onPrepareAsync();
522          break;
523      }
524      case kWhatFetchSubtitleData:
525      {
526          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
527                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
528          break;
529      }
530
531      case kWhatFetchTimedTextData:
532      {
533          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
534                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
535          break;
536      }
537
538      case kWhatSendSubtitleData:
539      {
540          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
541                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
542          break;
543      }
544
545      case kWhatSendGlobalTimedTextData:
546      {
547          sendGlobalTextData(kWhatTimedTextData, mFetchTimedTextDataGeneration, msg);
548          break;
549      }
550      case kWhatSendTimedTextData:
551      {
552          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
553                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
554          break;
555      }
556
557      case kWhatChangeAVSource:
558      {
559          int32_t trackIndex;
560          CHECK(msg->findInt32("trackIndex", &trackIndex));
561          const sp<IMediaSource> source = mSources.itemAt(trackIndex);
562
563          Track* track;
564          const char *mime;
565          media_track_type trackType, counterpartType;
566          sp<MetaData> meta = source->getFormat();
567          meta->findCString(kKeyMIMEType, &mime);
568          if (!strncasecmp(mime, "audio/", 6)) {
569              track = &mAudioTrack;
570              trackType = MEDIA_TRACK_TYPE_AUDIO;
571              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
572          } else {
573              CHECK(!strncasecmp(mime, "video/", 6));
574              track = &mVideoTrack;
575              trackType = MEDIA_TRACK_TYPE_VIDEO;
576              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
577          }
578
579
580          if (track->mSource != NULL) {
581              track->mSource->stop();
582          }
583          track->mSource = source;
584          track->mSource->start();
585          track->mIndex = trackIndex;
586
587          int64_t timeUs, actualTimeUs;
588          const bool formatChange = true;
589          if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
590              timeUs = mAudioLastDequeueTimeUs;
591          } else {
592              timeUs = mVideoLastDequeueTimeUs;
593          }
594          readBuffer(trackType, timeUs, MediaPlayerSeekMode::SEEK_PREVIOUS_SYNC /* mode */,
595                  &actualTimeUs, formatChange);
596          readBuffer(counterpartType, -1, MediaPlayerSeekMode::SEEK_PREVIOUS_SYNC /* mode */,
597                  NULL, !formatChange);
598          ALOGV("timeUs %lld actualTimeUs %lld", (long long)timeUs, (long long)actualTimeUs);
599
600          break;
601      }
602
603      case kWhatStart:
604      case kWhatResume:
605      {
606          mBufferingMonitor->restartPollBuffering();
607          break;
608      }
609
610      case kWhatGetFormat:
611      {
612          onGetFormatMeta(msg);
613          break;
614      }
615
616      case kWhatGetSelectedTrack:
617      {
618          onGetSelectedTrack(msg);
619          break;
620      }
621
622      case kWhatGetTrackInfo:
623      {
624          onGetTrackInfo(msg);
625          break;
626      }
627
628      case kWhatSelectTrack:
629      {
630          onSelectTrack(msg);
631          break;
632      }
633
634      case kWhatSeek:
635      {
636          onSeek(msg);
637          break;
638      }
639
640      case kWhatReadBuffer:
641      {
642          onReadBuffer(msg);
643          break;
644      }
645
646      case kWhatPrepareDrm:
647      {
648          status_t status = onPrepareDrm(msg);
649          sp<AMessage> response = new AMessage;
650          response->setInt32("status", status);
651          sp<AReplyToken> replyID;
652          CHECK(msg->senderAwaitsResponse(&replyID));
653          response->postReply(replyID);
654          break;
655      }
656
657      default:
658          Source::onMessageReceived(msg);
659          break;
660    }
661}
662
663void NuPlayer::GenericSource::fetchTextData(
664        uint32_t sendWhat,
665        media_track_type type,
666        int32_t curGen,
667        const sp<AnotherPacketSource>& packets,
668        const sp<AMessage>& msg) {
669    int32_t msgGeneration;
670    CHECK(msg->findInt32("generation", &msgGeneration));
671    if (msgGeneration != curGen) {
672        // stale
673        return;
674    }
675
676    int32_t avail;
677    if (packets->hasBufferAvailable(&avail)) {
678        return;
679    }
680
681    int64_t timeUs;
682    CHECK(msg->findInt64("timeUs", &timeUs));
683
684    int64_t subTimeUs;
685    readBuffer(type, timeUs, MediaPlayerSeekMode::SEEK_PREVIOUS_SYNC /* mode */, &subTimeUs);
686
687    int64_t delayUs = subTimeUs - timeUs;
688    if (msg->what() == kWhatFetchSubtitleData) {
689        const int64_t oneSecUs = 1000000ll;
690        delayUs -= oneSecUs;
691    }
692    sp<AMessage> msg2 = new AMessage(sendWhat, this);
693    msg2->setInt32("generation", msgGeneration);
694    msg2->post(delayUs < 0 ? 0 : delayUs);
695}
696
697void NuPlayer::GenericSource::sendTextData(
698        uint32_t what,
699        media_track_type type,
700        int32_t curGen,
701        const sp<AnotherPacketSource>& packets,
702        const sp<AMessage>& msg) {
703    int32_t msgGeneration;
704    CHECK(msg->findInt32("generation", &msgGeneration));
705    if (msgGeneration != curGen) {
706        // stale
707        return;
708    }
709
710    int64_t subTimeUs;
711    if (packets->nextBufferTime(&subTimeUs) != OK) {
712        return;
713    }
714
715    int64_t nextSubTimeUs;
716    readBuffer(type, -1, MediaPlayerSeekMode::SEEK_PREVIOUS_SYNC /* mode */, &nextSubTimeUs);
717
718    sp<ABuffer> buffer;
719    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
720    if (dequeueStatus == OK) {
721        sp<AMessage> notify = dupNotify();
722        notify->setInt32("what", what);
723        notify->setBuffer("buffer", buffer);
724        notify->post();
725
726        const int64_t delayUs = nextSubTimeUs - subTimeUs;
727        msg->post(delayUs < 0 ? 0 : delayUs);
728    }
729}
730
731void NuPlayer::GenericSource::sendGlobalTextData(
732        uint32_t what,
733        int32_t curGen,
734        sp<AMessage> msg) {
735    int32_t msgGeneration;
736    CHECK(msg->findInt32("generation", &msgGeneration));
737    if (msgGeneration != curGen) {
738        // stale
739        return;
740    }
741
742    uint32_t textType;
743    const void *data;
744    size_t size = 0;
745    if (mTimedTextTrack.mSource->getFormat()->findData(
746                    kKeyTextFormatData, &textType, &data, &size)) {
747        mGlobalTimedText = new ABuffer(size);
748        if (mGlobalTimedText->data()) {
749            memcpy(mGlobalTimedText->data(), data, size);
750            sp<AMessage> globalMeta = mGlobalTimedText->meta();
751            globalMeta->setInt64("timeUs", 0);
752            globalMeta->setString("mime", MEDIA_MIMETYPE_TEXT_3GPP);
753            globalMeta->setInt32("global", 1);
754            sp<AMessage> notify = dupNotify();
755            notify->setInt32("what", what);
756            notify->setBuffer("buffer", mGlobalTimedText);
757            notify->post();
758        }
759    }
760}
761
762sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
763    sp<AMessage> msg = new AMessage(kWhatGetFormat, this);
764    msg->setInt32("audio", audio);
765
766    sp<AMessage> response;
767    sp<RefBase> format;
768    status_t err = msg->postAndAwaitResponse(&response);
769    if (err == OK && response != NULL) {
770        CHECK(response->findObject("format", &format));
771        return static_cast<MetaData*>(format.get());
772    } else {
773        return NULL;
774    }
775}
776
777void NuPlayer::GenericSource::onGetFormatMeta(const sp<AMessage>& msg) const {
778    int32_t audio;
779    CHECK(msg->findInt32("audio", &audio));
780
781    sp<AMessage> response = new AMessage;
782    sp<MetaData> format = doGetFormatMeta(audio);
783    response->setObject("format", format);
784
785    sp<AReplyToken> replyID;
786    CHECK(msg->senderAwaitsResponse(&replyID));
787    response->postReply(replyID);
788}
789
790sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
791    sp<IMediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
792
793    if (source == NULL) {
794        return NULL;
795    }
796
797    return source->getFormat();
798}
799
800status_t NuPlayer::GenericSource::dequeueAccessUnit(
801        bool audio, sp<ABuffer> *accessUnit) {
802    if (audio && !mStarted) {
803        return -EWOULDBLOCK;
804    }
805
806    Track *track = audio ? &mAudioTrack : &mVideoTrack;
807
808    if (track->mSource == NULL) {
809        return -EWOULDBLOCK;
810    }
811
812    status_t finalResult;
813    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
814        if (finalResult == OK) {
815            postReadBuffer(
816                    audio ? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
817            return -EWOULDBLOCK;
818        }
819        return finalResult;
820    }
821
822    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
823
824    // start pulling in more buffers if we only have one (or no) buffer left
825    // so that decoder has less chance of being starved
826    if (track->mPackets->getAvailableBufferCount(&finalResult) < 2) {
827        postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
828    }
829
830    if (result != OK) {
831        if (mSubtitleTrack.mSource != NULL) {
832            mSubtitleTrack.mPackets->clear();
833            mFetchSubtitleDataGeneration++;
834        }
835        if (mTimedTextTrack.mSource != NULL) {
836            mTimedTextTrack.mPackets->clear();
837            mFetchTimedTextDataGeneration++;
838        }
839        return result;
840    }
841
842    int64_t timeUs;
843    status_t eosResult; // ignored
844    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
845    if (audio) {
846        mAudioLastDequeueTimeUs = timeUs;
847        mBufferingMonitor->updateDequeuedBufferTime(timeUs);
848    } else {
849        mVideoLastDequeueTimeUs = timeUs;
850    }
851
852    if (mSubtitleTrack.mSource != NULL
853            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
854        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, this);
855        msg->setInt64("timeUs", timeUs);
856        msg->setInt32("generation", mFetchSubtitleDataGeneration);
857        msg->post();
858    }
859
860    if (mTimedTextTrack.mSource != NULL
861            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
862        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, this);
863        msg->setInt64("timeUs", timeUs);
864        msg->setInt32("generation", mFetchTimedTextDataGeneration);
865        msg->post();
866    }
867
868    return result;
869}
870
871status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
872    *durationUs = mDurationUs;
873    return OK;
874}
875
876size_t NuPlayer::GenericSource::getTrackCount() const {
877    return mSources.size();
878}
879
880sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
881    sp<AMessage> msg = new AMessage(kWhatGetTrackInfo, this);
882    msg->setSize("trackIndex", trackIndex);
883
884    sp<AMessage> response;
885    sp<RefBase> format;
886    status_t err = msg->postAndAwaitResponse(&response);
887    if (err == OK && response != NULL) {
888        CHECK(response->findObject("format", &format));
889        return static_cast<AMessage*>(format.get());
890    } else {
891        return NULL;
892    }
893}
894
895void NuPlayer::GenericSource::onGetTrackInfo(const sp<AMessage>& msg) const {
896    size_t trackIndex;
897    CHECK(msg->findSize("trackIndex", &trackIndex));
898
899    sp<AMessage> response = new AMessage;
900    sp<AMessage> format = doGetTrackInfo(trackIndex);
901    response->setObject("format", format);
902
903    sp<AReplyToken> replyID;
904    CHECK(msg->senderAwaitsResponse(&replyID));
905    response->postReply(replyID);
906}
907
908sp<AMessage> NuPlayer::GenericSource::doGetTrackInfo(size_t trackIndex) const {
909    size_t trackCount = mSources.size();
910    if (trackIndex >= trackCount) {
911        return NULL;
912    }
913
914    sp<AMessage> format = new AMessage();
915    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
916    if (meta == NULL) {
917        ALOGE("no metadata for track %zu", trackIndex);
918        return NULL;
919    }
920
921    const char *mime;
922    CHECK(meta->findCString(kKeyMIMEType, &mime));
923    format->setString("mime", mime);
924
925    int32_t trackType;
926    if (!strncasecmp(mime, "video/", 6)) {
927        trackType = MEDIA_TRACK_TYPE_VIDEO;
928    } else if (!strncasecmp(mime, "audio/", 6)) {
929        trackType = MEDIA_TRACK_TYPE_AUDIO;
930    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
931        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
932    } else {
933        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
934    }
935    format->setInt32("type", trackType);
936
937    const char *lang;
938    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
939        lang = "und";
940    }
941    format->setString("language", lang);
942
943    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
944        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
945        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
946        meta->findInt32(kKeyTrackIsDefault, &isDefault);
947        meta->findInt32(kKeyTrackIsForced, &isForced);
948
949        format->setInt32("auto", !!isAutoselect);
950        format->setInt32("default", !!isDefault);
951        format->setInt32("forced", !!isForced);
952    }
953
954    return format;
955}
956
957ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
958    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, this);
959    msg->setInt32("type", type);
960
961    sp<AMessage> response;
962    int32_t index;
963    status_t err = msg->postAndAwaitResponse(&response);
964    if (err == OK && response != NULL) {
965        CHECK(response->findInt32("index", &index));
966        return index;
967    } else {
968        return -1;
969    }
970}
971
972void NuPlayer::GenericSource::onGetSelectedTrack(const sp<AMessage>& msg) const {
973    int32_t tmpType;
974    CHECK(msg->findInt32("type", &tmpType));
975    media_track_type type = (media_track_type)tmpType;
976
977    sp<AMessage> response = new AMessage;
978    ssize_t index = doGetSelectedTrack(type);
979    response->setInt32("index", index);
980
981    sp<AReplyToken> replyID;
982    CHECK(msg->senderAwaitsResponse(&replyID));
983    response->postReply(replyID);
984}
985
986ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
987    const Track *track = NULL;
988    switch (type) {
989    case MEDIA_TRACK_TYPE_VIDEO:
990        track = &mVideoTrack;
991        break;
992    case MEDIA_TRACK_TYPE_AUDIO:
993        track = &mAudioTrack;
994        break;
995    case MEDIA_TRACK_TYPE_TIMEDTEXT:
996        track = &mTimedTextTrack;
997        break;
998    case MEDIA_TRACK_TYPE_SUBTITLE:
999        track = &mSubtitleTrack;
1000        break;
1001    default:
1002        break;
1003    }
1004
1005    if (track != NULL && track->mSource != NULL) {
1006        return track->mIndex;
1007    }
1008
1009    return -1;
1010}
1011
1012status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select, int64_t timeUs) {
1013    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
1014    sp<AMessage> msg = new AMessage(kWhatSelectTrack, this);
1015    msg->setInt32("trackIndex", trackIndex);
1016    msg->setInt32("select", select);
1017    msg->setInt64("timeUs", timeUs);
1018
1019    sp<AMessage> response;
1020    status_t err = msg->postAndAwaitResponse(&response);
1021    if (err == OK && response != NULL) {
1022        CHECK(response->findInt32("err", &err));
1023    }
1024
1025    return err;
1026}
1027
1028void NuPlayer::GenericSource::onSelectTrack(const sp<AMessage>& msg) {
1029    int32_t trackIndex, select;
1030    int64_t timeUs;
1031    CHECK(msg->findInt32("trackIndex", &trackIndex));
1032    CHECK(msg->findInt32("select", &select));
1033    CHECK(msg->findInt64("timeUs", &timeUs));
1034
1035    sp<AMessage> response = new AMessage;
1036    status_t err = doSelectTrack(trackIndex, select, timeUs);
1037    response->setInt32("err", err);
1038
1039    sp<AReplyToken> replyID;
1040    CHECK(msg->senderAwaitsResponse(&replyID));
1041    response->postReply(replyID);
1042}
1043
1044status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select, int64_t timeUs) {
1045    if (trackIndex >= mSources.size()) {
1046        return BAD_INDEX;
1047    }
1048
1049    if (!select) {
1050        Track* track = NULL;
1051        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
1052            track = &mSubtitleTrack;
1053            mFetchSubtitleDataGeneration++;
1054        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
1055            track = &mTimedTextTrack;
1056            mFetchTimedTextDataGeneration++;
1057        }
1058        if (track == NULL) {
1059            return INVALID_OPERATION;
1060        }
1061        track->mSource->stop();
1062        track->mSource = NULL;
1063        track->mPackets->clear();
1064        return OK;
1065    }
1066
1067    const sp<IMediaSource> source = mSources.itemAt(trackIndex);
1068    sp<MetaData> meta = source->getFormat();
1069    const char *mime;
1070    CHECK(meta->findCString(kKeyMIMEType, &mime));
1071    if (!strncasecmp(mime, "text/", 5)) {
1072        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
1073        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
1074        if (track->mSource != NULL && track->mIndex == trackIndex) {
1075            return OK;
1076        }
1077        track->mIndex = trackIndex;
1078        if (track->mSource != NULL) {
1079            track->mSource->stop();
1080        }
1081        track->mSource = mSources.itemAt(trackIndex);
1082        track->mSource->start();
1083        if (track->mPackets == NULL) {
1084            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
1085        } else {
1086            track->mPackets->clear();
1087            track->mPackets->setFormat(track->mSource->getFormat());
1088
1089        }
1090
1091        if (isSubtitle) {
1092            mFetchSubtitleDataGeneration++;
1093        } else {
1094            mFetchTimedTextDataGeneration++;
1095        }
1096
1097        status_t eosResult; // ignored
1098        if (mSubtitleTrack.mSource != NULL
1099                && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
1100            sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, this);
1101            msg->setInt64("timeUs", timeUs);
1102            msg->setInt32("generation", mFetchSubtitleDataGeneration);
1103            msg->post();
1104        }
1105
1106        sp<AMessage> msg2 = new AMessage(kWhatSendGlobalTimedTextData, this);
1107        msg2->setInt32("generation", mFetchTimedTextDataGeneration);
1108        msg2->post();
1109
1110        if (mTimedTextTrack.mSource != NULL
1111                && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
1112            sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, this);
1113            msg->setInt64("timeUs", timeUs);
1114            msg->setInt32("generation", mFetchTimedTextDataGeneration);
1115            msg->post();
1116        }
1117
1118        return OK;
1119    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
1120        bool audio = !strncasecmp(mime, "audio/", 6);
1121        Track *track = audio ? &mAudioTrack : &mVideoTrack;
1122        if (track->mSource != NULL && track->mIndex == trackIndex) {
1123            return OK;
1124        }
1125
1126        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, this);
1127        msg->setInt32("trackIndex", trackIndex);
1128        msg->post();
1129        return OK;
1130    }
1131
1132    return INVALID_OPERATION;
1133}
1134
1135status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs, MediaPlayerSeekMode mode) {
1136    sp<AMessage> msg = new AMessage(kWhatSeek, this);
1137    msg->setInt64("seekTimeUs", seekTimeUs);
1138    msg->setInt32("mode", mode);
1139
1140    sp<AMessage> response;
1141    status_t err = msg->postAndAwaitResponse(&response);
1142    if (err == OK && response != NULL) {
1143        CHECK(response->findInt32("err", &err));
1144    }
1145
1146    return err;
1147}
1148
1149void NuPlayer::GenericSource::onSeek(const sp<AMessage>& msg) {
1150    int64_t seekTimeUs;
1151    int32_t mode;
1152    CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1153    CHECK(msg->findInt32("mode", &mode));
1154
1155    sp<AMessage> response = new AMessage;
1156    status_t err = doSeek(seekTimeUs, (MediaPlayerSeekMode)mode);
1157    response->setInt32("err", err);
1158
1159    sp<AReplyToken> replyID;
1160    CHECK(msg->senderAwaitsResponse(&replyID));
1161    response->postReply(replyID);
1162}
1163
1164status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs, MediaPlayerSeekMode mode) {
1165    mBufferingMonitor->updateDequeuedBufferTime(-1ll);
1166
1167    // If the Widevine source is stopped, do not attempt to read any
1168    // more buffers.
1169    //
1170    // TODO: revisit after widevine is removed.  May be able to
1171    // combine mStopRead with mStarted.
1172    if (mStopRead) {
1173        return INVALID_OPERATION;
1174    }
1175    if (mVideoTrack.mSource != NULL) {
1176        int64_t actualTimeUs;
1177        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, mode, &actualTimeUs);
1178
1179        if (mode != MediaPlayerSeekMode::SEEK_CLOSEST) {
1180            seekTimeUs = actualTimeUs;
1181        }
1182        mVideoLastDequeueTimeUs = actualTimeUs;
1183    }
1184
1185    if (mAudioTrack.mSource != NULL) {
1186        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
1187        mAudioLastDequeueTimeUs = seekTimeUs;
1188    }
1189
1190    // If currently buffering, post kWhatBufferingEnd first, so that
1191    // NuPlayer resumes. Otherwise, if cache hits high watermark
1192    // before new polling happens, no one will resume the playback.
1193    mBufferingMonitor->stopBufferingIfNecessary();
1194    mBufferingMonitor->restartPollBuffering();
1195
1196    return OK;
1197}
1198
1199sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
1200        MediaBuffer* mb,
1201        media_track_type trackType) {
1202    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
1203    size_t outLength = mb->range_length();
1204
1205    if (audio && mAudioIsVorbis) {
1206        outLength += sizeof(int32_t);
1207    }
1208
1209    sp<ABuffer> ab;
1210
1211    if (mIsDrmProtected)   {
1212        // Modular DRM
1213        // Enabled for both video/audio so 1) media buffer is reused without extra copying
1214        // 2) meta data can be retrieved in onInputBufferFetched for calling queueSecureInputBuffer.
1215
1216        // data is already provided in the buffer
1217        ab = new ABuffer(NULL, mb->range_length());
1218        mb->add_ref();
1219        ab->setMediaBufferBase(mb);
1220
1221        // Modular DRM: Required b/c of the above add_ref.
1222        // If ref>0, there must be an observer, or it'll crash at release().
1223        // TODO: MediaBuffer might need to be revised to ease such need.
1224        mb->setObserver(this);
1225        // setMediaBufferBase() interestingly doesn't increment the ref count on its own.
1226        // Extra increment (since we want to keep mb alive and attached to ab beyond this function
1227        // call. This is to counter the effect of mb->release() towards the end.
1228        mb->add_ref();
1229
1230    } else {
1231        ab = new ABuffer(outLength);
1232        memcpy(ab->data(),
1233               (const uint8_t *)mb->data() + mb->range_offset(),
1234               mb->range_length());
1235    }
1236
1237    if (audio && mAudioIsVorbis) {
1238        int32_t numPageSamples;
1239        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
1240            numPageSamples = -1;
1241        }
1242
1243        uint8_t* abEnd = ab->data() + mb->range_length();
1244        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
1245    }
1246
1247    sp<AMessage> meta = ab->meta();
1248
1249    int64_t timeUs;
1250    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
1251    meta->setInt64("timeUs", timeUs);
1252
1253    if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1254        int32_t layerId;
1255        if (mb->meta_data()->findInt32(kKeyTemporalLayerId, &layerId)) {
1256            meta->setInt32("temporal-layer-id", layerId);
1257        }
1258    }
1259
1260    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
1261        const char *mime;
1262        CHECK(mTimedTextTrack.mSource != NULL
1263                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
1264        meta->setString("mime", mime);
1265    }
1266
1267    int64_t durationUs;
1268    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
1269        meta->setInt64("durationUs", durationUs);
1270    }
1271
1272    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
1273        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
1274    }
1275
1276    uint32_t dataType; // unused
1277    const void *seiData;
1278    size_t seiLength;
1279    if (mb->meta_data()->findData(kKeySEI, &dataType, &seiData, &seiLength)) {
1280        sp<ABuffer> sei = ABuffer::CreateAsCopy(seiData, seiLength);;
1281        meta->setBuffer("sei", sei);
1282    }
1283
1284    const void *mpegUserDataPointer;
1285    size_t mpegUserDataLength;
1286    if (mb->meta_data()->findData(
1287            kKeyMpegUserData, &dataType, &mpegUserDataPointer, &mpegUserDataLength)) {
1288        sp<ABuffer> mpegUserData = ABuffer::CreateAsCopy(mpegUserDataPointer, mpegUserDataLength);
1289        meta->setBuffer("mpegUserData", mpegUserData);
1290    }
1291
1292    mb->release();
1293    mb = NULL;
1294
1295    return ab;
1296}
1297
1298void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
1299    Mutex::Autolock _l(mReadBufferLock);
1300
1301    if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
1302        mPendingReadBufferTypes |= (1 << trackType);
1303        sp<AMessage> msg = new AMessage(kWhatReadBuffer, this);
1304        msg->setInt32("trackType", trackType);
1305        msg->post();
1306    }
1307}
1308
1309void NuPlayer::GenericSource::onReadBuffer(const sp<AMessage>& msg) {
1310    int32_t tmpType;
1311    CHECK(msg->findInt32("trackType", &tmpType));
1312    media_track_type trackType = (media_track_type)tmpType;
1313    readBuffer(trackType);
1314    {
1315        // only protect the variable change, as readBuffer may
1316        // take considerable time.
1317        Mutex::Autolock _l(mReadBufferLock);
1318        mPendingReadBufferTypes &= ~(1 << trackType);
1319    }
1320}
1321
1322void NuPlayer::GenericSource::readBuffer(
1323        media_track_type trackType, int64_t seekTimeUs, MediaPlayerSeekMode mode,
1324        int64_t *actualTimeUs, bool formatChange) {
1325    // Do not read data if Widevine source is stopped
1326    //
1327    // TODO: revisit after widevine is removed.  May be able to
1328    // combine mStopRead with mStarted.
1329    if (mStopRead) {
1330        return;
1331    }
1332    Track *track;
1333    size_t maxBuffers = 1;
1334    switch (trackType) {
1335        case MEDIA_TRACK_TYPE_VIDEO:
1336            track = &mVideoTrack;
1337            maxBuffers = 8;  // too large of a number may influence seeks
1338            break;
1339        case MEDIA_TRACK_TYPE_AUDIO:
1340            track = &mAudioTrack;
1341            maxBuffers = 64;
1342            break;
1343        case MEDIA_TRACK_TYPE_SUBTITLE:
1344            track = &mSubtitleTrack;
1345            break;
1346        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1347            track = &mTimedTextTrack;
1348            break;
1349        default:
1350            TRESPASS();
1351    }
1352
1353    if (track->mSource == NULL) {
1354        return;
1355    }
1356
1357    if (actualTimeUs) {
1358        *actualTimeUs = seekTimeUs;
1359    }
1360
1361    MediaSource::ReadOptions options;
1362
1363    bool seeking = false;
1364    if (seekTimeUs >= 0) {
1365        options.setSeekTo(seekTimeUs, mode);
1366        seeking = true;
1367    }
1368
1369    const bool couldReadMultiple = (track->mSource->supportReadMultiple());
1370
1371    if (couldReadMultiple) {
1372        options.setNonBlocking();
1373    }
1374
1375    for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
1376        Vector<MediaBuffer *> mediaBuffers;
1377        status_t err = NO_ERROR;
1378
1379        if (couldReadMultiple) {
1380            err = track->mSource->readMultiple(
1381                    &mediaBuffers, maxBuffers - numBuffers, &options);
1382        } else {
1383            MediaBuffer *mbuf = NULL;
1384            err = track->mSource->read(&mbuf, &options);
1385            if (err == OK && mbuf != NULL) {
1386                mediaBuffers.push_back(mbuf);
1387            }
1388        }
1389
1390        options.clearNonPersistent();
1391
1392        size_t id = 0;
1393        size_t count = mediaBuffers.size();
1394        for (; id < count; ++id) {
1395            int64_t timeUs;
1396            MediaBuffer *mbuf = mediaBuffers[id];
1397            if (!mbuf->meta_data()->findInt64(kKeyTime, &timeUs)) {
1398                mbuf->meta_data()->dumpToLog();
1399                track->mPackets->signalEOS(ERROR_MALFORMED);
1400                break;
1401            }
1402            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1403                mAudioTimeUs = timeUs;
1404                mBufferingMonitor->updateQueuedTime(true /* isAudio */, timeUs);
1405            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1406                mVideoTimeUs = timeUs;
1407                mBufferingMonitor->updateQueuedTime(false /* isAudio */, timeUs);
1408            }
1409
1410            queueDiscontinuityIfNeeded(seeking, formatChange, trackType, track);
1411
1412            sp<ABuffer> buffer = mediaBufferToABuffer(mbuf, trackType);
1413            if (numBuffers == 0 && actualTimeUs != nullptr) {
1414                *actualTimeUs = timeUs;
1415            }
1416            if (seeking && buffer != nullptr) {
1417                sp<AMessage> meta = buffer->meta();
1418                if (meta != nullptr && mode == MediaPlayerSeekMode::SEEK_CLOSEST
1419                        && seekTimeUs > timeUs) {
1420                    sp<AMessage> extra = new AMessage;
1421                    extra->setInt64("resume-at-mediaTimeUs", seekTimeUs);
1422                    meta->setMessage("extra", extra);
1423                }
1424            }
1425
1426            track->mPackets->queueAccessUnit(buffer);
1427            formatChange = false;
1428            seeking = false;
1429            ++numBuffers;
1430        }
1431        if (id < count) {
1432            // Error, some mediaBuffer doesn't have kKeyTime.
1433            for (; id < count; ++id) {
1434                mediaBuffers[id]->release();
1435            }
1436            break;
1437        }
1438
1439        if (err == WOULD_BLOCK) {
1440            break;
1441        } else if (err == INFO_FORMAT_CHANGED) {
1442#if 0
1443            track->mPackets->queueDiscontinuity(
1444                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1445                    NULL,
1446                    false /* discard */);
1447#endif
1448        } else if (err != OK) {
1449            queueDiscontinuityIfNeeded(seeking, formatChange, trackType, track);
1450            track->mPackets->signalEOS(err);
1451            break;
1452        }
1453    }
1454}
1455
1456void NuPlayer::GenericSource::queueDiscontinuityIfNeeded(
1457        bool seeking, bool formatChange, media_track_type trackType, Track *track) {
1458    // formatChange && seeking: track whose source is changed during selection
1459    // formatChange && !seeking: track whose source is not changed during selection
1460    // !formatChange: normal seek
1461    if ((seeking || formatChange)
1462            && (trackType == MEDIA_TRACK_TYPE_AUDIO
1463            || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1464        ATSParser::DiscontinuityType type = (formatChange && seeking)
1465                ? ATSParser::DISCONTINUITY_FORMATCHANGE
1466                : ATSParser::DISCONTINUITY_NONE;
1467        track->mPackets->queueDiscontinuity(type, NULL /* extra */, true /* discard */);
1468    }
1469}
1470
1471NuPlayer::GenericSource::BufferingMonitor::BufferingMonitor(const sp<AMessage> &notify)
1472    : mNotify(notify),
1473      mDurationUs(-1ll),
1474      mBitrate(-1ll),
1475      mIsStreaming(false),
1476      mAudioTimeUs(0),
1477      mVideoTimeUs(0),
1478      mPollBufferingGeneration(0),
1479      mPrepareBuffering(false),
1480      mBuffering(false),
1481      mPrevBufferPercentage(-1),
1482      mOffloadAudio(false),
1483      mFirstDequeuedBufferRealUs(-1ll),
1484      mFirstDequeuedBufferMediaUs(-1ll),
1485      mlastDequeuedBufferMediaUs(-1ll) {
1486      getDefaultBufferingSettings(&mSettings);
1487}
1488
1489NuPlayer::GenericSource::BufferingMonitor::~BufferingMonitor() {
1490}
1491
1492void NuPlayer::GenericSource::BufferingMonitor::getDefaultBufferingSettings(
1493        BufferingSettings *buffering /* nonnull */) {
1494    buffering->mInitialBufferingMode = BUFFERING_MODE_TIME_ONLY;
1495    buffering->mRebufferingMode = BUFFERING_MODE_TIME_THEN_SIZE;
1496    buffering->mInitialWatermarkMs = kHighWaterMarkMs;
1497    buffering->mRebufferingWatermarkLowMs = kLowWaterMarkMs;
1498    buffering->mRebufferingWatermarkHighMs = kHighWaterMarkRebufferMs;
1499    buffering->mRebufferingWatermarkLowKB = kLowWaterMarkKB;
1500    buffering->mRebufferingWatermarkHighKB = kHighWaterMarkKB;
1501
1502    ALOGV("BufferingMonitor::getDefaultBufferingSettings{%s}",
1503            buffering->toString().string());
1504}
1505
1506status_t NuPlayer::GenericSource::BufferingMonitor::setBufferingSettings(
1507        const BufferingSettings &buffering) {
1508    ALOGV("BufferingMonitor::setBufferingSettings{%s}",
1509            buffering.toString().string());
1510
1511    Mutex::Autolock _l(mLock);
1512    if (buffering.IsSizeBasedBufferingMode(buffering.mInitialBufferingMode)
1513            || (buffering.IsTimeBasedBufferingMode(buffering.mRebufferingMode)
1514                && buffering.mRebufferingWatermarkLowMs > buffering.mRebufferingWatermarkHighMs)
1515            || (buffering.IsSizeBasedBufferingMode(buffering.mRebufferingMode)
1516                && buffering.mRebufferingWatermarkLowKB > buffering.mRebufferingWatermarkHighKB)) {
1517        return BAD_VALUE;
1518    }
1519    mSettings = buffering;
1520    if (mSettings.mInitialBufferingMode == BUFFERING_MODE_NONE) {
1521        mSettings.mInitialWatermarkMs = BufferingSettings::kNoWatermark;
1522    }
1523    if (!mSettings.IsTimeBasedBufferingMode(mSettings.mRebufferingMode)) {
1524        mSettings.mRebufferingWatermarkLowMs = BufferingSettings::kNoWatermark;
1525        mSettings.mRebufferingWatermarkHighMs = INT32_MAX;
1526    }
1527    if (!mSettings.IsSizeBasedBufferingMode(mSettings.mRebufferingMode)) {
1528        mSettings.mRebufferingWatermarkLowKB = BufferingSettings::kNoWatermark;
1529        mSettings.mRebufferingWatermarkHighKB = INT32_MAX;
1530    }
1531    return OK;
1532}
1533
1534void NuPlayer::GenericSource::BufferingMonitor::prepare(
1535        const sp<NuCachedSource2> &cachedSource,
1536        int64_t durationUs,
1537        int64_t bitrate,
1538        bool isStreaming) {
1539    Mutex::Autolock _l(mLock);
1540    prepare_l(cachedSource, durationUs, bitrate, isStreaming);
1541}
1542
1543void NuPlayer::GenericSource::BufferingMonitor::stop() {
1544    Mutex::Autolock _l(mLock);
1545    prepare_l(NULL /* cachedSource */, -1 /* durationUs */,
1546            -1 /* bitrate */, false /* isStreaming */);
1547}
1548
1549void NuPlayer::GenericSource::BufferingMonitor::cancelPollBuffering() {
1550    Mutex::Autolock _l(mLock);
1551    cancelPollBuffering_l();
1552}
1553
1554void NuPlayer::GenericSource::BufferingMonitor::restartPollBuffering() {
1555    Mutex::Autolock _l(mLock);
1556    if (mIsStreaming) {
1557        cancelPollBuffering_l();
1558        onPollBuffering_l();
1559    }
1560}
1561
1562void NuPlayer::GenericSource::BufferingMonitor::stopBufferingIfNecessary() {
1563    Mutex::Autolock _l(mLock);
1564    stopBufferingIfNecessary_l();
1565}
1566
1567void NuPlayer::GenericSource::BufferingMonitor::ensureCacheIsFetching() {
1568    Mutex::Autolock _l(mLock);
1569    ensureCacheIsFetching_l();
1570}
1571
1572void NuPlayer::GenericSource::BufferingMonitor::updateQueuedTime(bool isAudio, int64_t timeUs) {
1573    Mutex::Autolock _l(mLock);
1574    if (isAudio) {
1575        mAudioTimeUs = timeUs;
1576    } else {
1577        mVideoTimeUs = timeUs;
1578    }
1579}
1580
1581void NuPlayer::GenericSource::BufferingMonitor::setOffloadAudio(bool offload) {
1582    Mutex::Autolock _l(mLock);
1583    mOffloadAudio = offload;
1584}
1585
1586void NuPlayer::GenericSource::BufferingMonitor::updateDequeuedBufferTime(int64_t mediaUs) {
1587    Mutex::Autolock _l(mLock);
1588    if (mediaUs < 0) {
1589        mFirstDequeuedBufferRealUs = -1ll;
1590        mFirstDequeuedBufferMediaUs = -1ll;
1591    } else if (mFirstDequeuedBufferRealUs < 0) {
1592        mFirstDequeuedBufferRealUs = ALooper::GetNowUs();
1593        mFirstDequeuedBufferMediaUs = mediaUs;
1594    }
1595    mlastDequeuedBufferMediaUs = mediaUs;
1596}
1597
1598void NuPlayer::GenericSource::BufferingMonitor::prepare_l(
1599        const sp<NuCachedSource2> &cachedSource,
1600        int64_t durationUs,
1601        int64_t bitrate,
1602        bool isStreaming) {
1603
1604    mCachedSource = cachedSource;
1605    mDurationUs = durationUs;
1606    mBitrate = bitrate;
1607    mIsStreaming = isStreaming;
1608    mAudioTimeUs = 0;
1609    mVideoTimeUs = 0;
1610    mPrepareBuffering = (cachedSource != NULL);
1611    cancelPollBuffering_l();
1612    mOffloadAudio = false;
1613    mFirstDequeuedBufferRealUs = -1ll;
1614    mFirstDequeuedBufferMediaUs = -1ll;
1615    mlastDequeuedBufferMediaUs = -1ll;
1616}
1617
1618void NuPlayer::GenericSource::BufferingMonitor::cancelPollBuffering_l() {
1619    mBuffering = false;
1620    ++mPollBufferingGeneration;
1621    mPrevBufferPercentage = -1;
1622}
1623
1624void NuPlayer::GenericSource::BufferingMonitor::notifyBufferingUpdate_l(int32_t percentage) {
1625    // Buffering percent could go backward as it's estimated from remaining
1626    // data and last access time. This could cause the buffering position
1627    // drawn on media control to jitter slightly. Remember previously reported
1628    // percentage and don't allow it to go backward.
1629    if (percentage < mPrevBufferPercentage) {
1630        percentage = mPrevBufferPercentage;
1631    } else if (percentage > 100) {
1632        percentage = 100;
1633    }
1634
1635    mPrevBufferPercentage = percentage;
1636
1637    ALOGV("notifyBufferingUpdate_l: buffering %d%%", percentage);
1638
1639    sp<AMessage> msg = mNotify->dup();
1640    msg->setInt32("what", kWhatBufferingUpdate);
1641    msg->setInt32("percentage", percentage);
1642    msg->post();
1643}
1644
1645void NuPlayer::GenericSource::BufferingMonitor::startBufferingIfNecessary_l() {
1646    if (mPrepareBuffering) {
1647        return;
1648    }
1649
1650    if (!mBuffering) {
1651        ALOGD("startBufferingIfNecessary_l");
1652
1653        mBuffering = true;
1654
1655        ensureCacheIsFetching_l();
1656        sendCacheStats_l();
1657
1658        sp<AMessage> notify = mNotify->dup();
1659        notify->setInt32("what", kWhatPauseOnBufferingStart);
1660        notify->post();
1661    }
1662}
1663
1664void NuPlayer::GenericSource::BufferingMonitor::stopBufferingIfNecessary_l() {
1665    if (mPrepareBuffering) {
1666        ALOGD("stopBufferingIfNecessary_l, mBuffering=%d", mBuffering);
1667
1668        mPrepareBuffering = false;
1669
1670        sp<AMessage> notify = mNotify->dup();
1671        notify->setInt32("what", kWhatPrepared);
1672        notify->setInt32("err", OK);
1673        notify->post();
1674
1675        return;
1676    }
1677
1678    if (mBuffering) {
1679        ALOGD("stopBufferingIfNecessary_l");
1680        mBuffering = false;
1681
1682        sendCacheStats_l();
1683
1684        sp<AMessage> notify = mNotify->dup();
1685        notify->setInt32("what", kWhatResumeOnBufferingEnd);
1686        notify->post();
1687    }
1688}
1689
1690void NuPlayer::GenericSource::BufferingMonitor::sendCacheStats_l() {
1691    int32_t kbps = 0;
1692    status_t err = UNKNOWN_ERROR;
1693
1694    if (mCachedSource != NULL) {
1695        err = mCachedSource->getEstimatedBandwidthKbps(&kbps);
1696    }
1697
1698    if (err == OK) {
1699        sp<AMessage> notify = mNotify->dup();
1700        notify->setInt32("what", kWhatCacheStats);
1701        notify->setInt32("bandwidth", kbps);
1702        notify->post();
1703    }
1704}
1705
1706void NuPlayer::GenericSource::BufferingMonitor::ensureCacheIsFetching_l() {
1707    if (mCachedSource != NULL) {
1708        mCachedSource->resumeFetchingIfNecessary();
1709    }
1710}
1711
1712void NuPlayer::GenericSource::BufferingMonitor::schedulePollBuffering_l() {
1713    sp<AMessage> msg = new AMessage(kWhatPollBuffering, this);
1714    msg->setInt32("generation", mPollBufferingGeneration);
1715    // Enquires buffering status every second.
1716    msg->post(1000000ll);
1717}
1718
1719int64_t NuPlayer::GenericSource::BufferingMonitor::getLastReadPosition_l() {
1720    if (mAudioTimeUs > 0) {
1721        return mAudioTimeUs;
1722    } else if (mVideoTimeUs > 0) {
1723        return mVideoTimeUs;
1724    } else {
1725        return 0;
1726    }
1727}
1728
1729void NuPlayer::GenericSource::BufferingMonitor::onPollBuffering_l() {
1730    status_t finalStatus = UNKNOWN_ERROR;
1731    int64_t cachedDurationUs = -1ll;
1732    ssize_t cachedDataRemaining = -1;
1733
1734    if (mCachedSource != NULL) {
1735        cachedDataRemaining =
1736                mCachedSource->approxDataRemaining(&finalStatus);
1737
1738        if (finalStatus == OK) {
1739            off64_t size;
1740            int64_t bitrate = 0ll;
1741            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
1742                // |bitrate| uses bits/second unit, while size is number of bytes.
1743                bitrate = size * 8000000ll / mDurationUs;
1744            } else if (mBitrate > 0) {
1745                bitrate = mBitrate;
1746            }
1747            if (bitrate > 0) {
1748                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
1749            }
1750        }
1751    }
1752
1753    if (finalStatus != OK) {
1754        ALOGV("onPollBuffering_l: EOS (finalStatus = %d)", finalStatus);
1755
1756        if (finalStatus == ERROR_END_OF_STREAM) {
1757            notifyBufferingUpdate_l(100);
1758        }
1759
1760        stopBufferingIfNecessary_l();
1761        return;
1762    }
1763
1764    if (cachedDurationUs >= 0ll) {
1765        if (mDurationUs > 0ll) {
1766            int64_t cachedPosUs = getLastReadPosition_l() + cachedDurationUs;
1767            int percentage = 100.0 * cachedPosUs / mDurationUs;
1768            if (percentage > 100) {
1769                percentage = 100;
1770            }
1771
1772            notifyBufferingUpdate_l(percentage);
1773        }
1774
1775        ALOGV("onPollBuffering_l: cachedDurationUs %.1f sec", cachedDurationUs / 1000000.0f);
1776
1777        if (mPrepareBuffering) {
1778            if (cachedDurationUs > mSettings.mInitialWatermarkMs * 1000) {
1779                stopBufferingIfNecessary_l();
1780            }
1781        } else if (mSettings.IsTimeBasedBufferingMode(mSettings.mRebufferingMode)) {
1782            if (cachedDurationUs < mSettings.mRebufferingWatermarkLowMs * 1000) {
1783                // Take into account the data cached in downstream components to try to avoid
1784                // unnecessary pause.
1785                if (mOffloadAudio && mFirstDequeuedBufferRealUs >= 0) {
1786                    int64_t downStreamCacheUs =
1787                        mlastDequeuedBufferMediaUs - mFirstDequeuedBufferMediaUs
1788                            - (ALooper::GetNowUs() - mFirstDequeuedBufferRealUs);
1789                    if (downStreamCacheUs > 0) {
1790                        cachedDurationUs += downStreamCacheUs;
1791                    }
1792                }
1793
1794                if (cachedDurationUs < mSettings.mRebufferingWatermarkLowMs * 1000) {
1795                    startBufferingIfNecessary_l();
1796                }
1797            } else if (cachedDurationUs > mSettings.mRebufferingWatermarkHighMs * 1000) {
1798                stopBufferingIfNecessary_l();
1799            }
1800        }
1801    } else if (cachedDataRemaining >= 0
1802            && mSettings.IsSizeBasedBufferingMode(mSettings.mRebufferingMode)) {
1803        ALOGV("onPollBuffering_l: cachedDataRemaining %zd bytes",
1804                cachedDataRemaining);
1805
1806        if (cachedDataRemaining < (mSettings.mRebufferingWatermarkLowKB << 10)) {
1807            startBufferingIfNecessary_l();
1808        } else if (cachedDataRemaining > (mSettings.mRebufferingWatermarkHighKB << 10)) {
1809            stopBufferingIfNecessary_l();
1810        }
1811    }
1812
1813    schedulePollBuffering_l();
1814}
1815
1816void NuPlayer::GenericSource::BufferingMonitor::onMessageReceived(const sp<AMessage> &msg) {
1817    switch (msg->what()) {
1818      case kWhatPollBuffering:
1819      {
1820          int32_t generation;
1821          CHECK(msg->findInt32("generation", &generation));
1822          Mutex::Autolock _l(mLock);
1823          if (generation == mPollBufferingGeneration) {
1824              onPollBuffering_l();
1825          }
1826          break;
1827      }
1828      default:
1829          TRESPASS();
1830          break;
1831    }
1832}
1833
1834// Modular DRM
1835status_t NuPlayer::GenericSource::prepareDrm(
1836        const uint8_t uuid[16], const Vector<uint8_t> &drmSessionId, sp<ICrypto> *crypto)
1837{
1838    ALOGV("prepareDrm");
1839
1840    sp<AMessage> msg = new AMessage(kWhatPrepareDrm, this);
1841    // synchronous call so just passing the address but with local copies of "const" args
1842    uint8_t UUID[16];
1843    memcpy(UUID, uuid, sizeof(UUID));
1844    Vector<uint8_t> sessionId = drmSessionId;
1845    msg->setPointer("uuid", (void*)UUID);
1846    msg->setPointer("drmSessionId", (void*)&sessionId);
1847    msg->setPointer("crypto", (void*)crypto);
1848
1849    sp<AMessage> response;
1850    status_t status = msg->postAndAwaitResponse(&response);
1851
1852    if (status == OK && response != NULL) {
1853        CHECK(response->findInt32("status", &status));
1854        ALOGV_IF(status == OK, "prepareDrm: mCrypto: %p (%d)", crypto->get(),
1855                (*crypto != NULL ? (*crypto)->getStrongCount() : 0));
1856        ALOGD("prepareDrm ret: %d ", status);
1857    } else {
1858        ALOGE("prepareDrm err: %d", status);
1859    }
1860
1861    return status;
1862}
1863
1864status_t NuPlayer::GenericSource::onPrepareDrm(const sp<AMessage> &msg)
1865{
1866    ALOGV("onPrepareDrm ");
1867
1868    mIsDrmProtected = false;
1869    mIsSecure = false;
1870
1871    uint8_t *uuid;
1872    Vector<uint8_t> *drmSessionId;
1873    sp<ICrypto> *outCrypto;
1874    CHECK(msg->findPointer("uuid", (void**)&uuid));
1875    CHECK(msg->findPointer("drmSessionId", (void**)&drmSessionId));
1876    CHECK(msg->findPointer("crypto", (void**)&outCrypto));
1877
1878    status_t status = OK;
1879    sp<ICrypto> crypto = NuPlayerDrm::createCryptoAndPlugin(uuid, *drmSessionId, status);
1880    if (crypto == NULL) {
1881        ALOGE("onPrepareDrm: createCrypto failed. status: %d", status);
1882        return status;
1883    }
1884    ALOGV("onPrepareDrm: createCryptoAndPlugin succeeded for uuid: %s",
1885            DrmUUID::toHexString(uuid).string());
1886
1887    *outCrypto = crypto;
1888    // as long a there is an active crypto
1889    mIsDrmProtected = true;
1890
1891    if (mMimes.size() == 0) {
1892        status = UNKNOWN_ERROR;
1893        ALOGE("onPrepareDrm: Unexpected. Must have at least one track. status: %d", status);
1894        return status;
1895    }
1896
1897    // first mime in this list is either the video track, or the first audio track
1898    const char *mime = mMimes[0].string();
1899    mIsSecure = crypto->requiresSecureDecoderComponent(mime);
1900    ALOGV("onPrepareDrm: requiresSecureDecoderComponent mime: %s  isSecure: %d",
1901            mime, mIsSecure);
1902
1903    // Checking the member flags while in the looper to send out the notification.
1904    // The legacy mDecryptHandle!=NULL check (for FLAG_PROTECTED) is equivalent to mIsDrmProtected.
1905    notifyFlagsChanged(
1906            (mIsSecure ? FLAG_SECURE : 0) |
1907            (mIsDrmProtected ? FLAG_PROTECTED : 0) |
1908            FLAG_CAN_PAUSE |
1909            FLAG_CAN_SEEK_BACKWARD |
1910            FLAG_CAN_SEEK_FORWARD |
1911            FLAG_CAN_SEEK);
1912
1913    return status;
1914}
1915
1916status_t NuPlayer::GenericSource::checkDrmInfo()
1917{
1918    if (mFileMeta == NULL) {
1919        ALOGI("checkDrmInfo: No metadata");
1920        return OK; // letting the caller responds accordingly
1921    }
1922
1923    uint32_t type;
1924    const void *pssh;
1925    size_t psshsize;
1926
1927    if (!mFileMeta->findData(kKeyPssh, &type, &pssh, &psshsize)) {
1928        ALOGE("checkDrmInfo: No PSSH");
1929        return OK; // source without DRM info
1930    }
1931
1932    Parcel parcel;
1933    NuPlayerDrm::retrieveDrmInfo(pssh, psshsize, mMimes, &parcel);
1934    ALOGV("checkDrmInfo: MEDIA_DRM_INFO PSSH size: %d  Parcel size: %d  objects#: %d",
1935          (int)psshsize, (int)parcel.dataSize(), (int)parcel.objectsCount());
1936
1937    if (parcel.dataSize() == 0) {
1938        ALOGE("checkDrmInfo: Unexpected parcel size: 0");
1939        return UNKNOWN_ERROR;
1940    }
1941
1942    // Can't pass parcel as a message to the player. Converting Parcel->ABuffer to pass it
1943    // to the Player's onSourceNotify then back to Parcel for calling driver's notifyListener.
1944    sp<ABuffer> drmInfoBuffer = ABuffer::CreateAsCopy(parcel.data(), parcel.dataSize());
1945    notifyDrmInfo(drmInfoBuffer);
1946
1947    return OK;
1948}
1949
1950void NuPlayer::GenericSource::signalBufferReturned(MediaBuffer *buffer)
1951{
1952    //ALOGV("signalBufferReturned %p  refCount: %d", buffer, buffer->localRefcount());
1953
1954    buffer->setObserver(NULL);
1955    buffer->release(); // this leads to delete since that there is no observor
1956}
1957
1958}  // namespace android
1959