GenericSource.cpp revision 5249a5583df9a17dc3899100ea642f29eb86a23e 
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/NuCachedSource2.h"
37#include "../../libstagefright/include/HTTPBase.h"
38
39namespace android {
40
41static int64_t kLowWaterMarkUs = 2000000ll;  // 2secs
42static int64_t kHighWaterMarkUs = 5000000ll;  // 5secs
43static int64_t kHighWaterMarkRebufferUs = 15000000ll;  // 15secs
44static const ssize_t kLowWaterMarkBytes = 40000;
45static const ssize_t kHighWaterMarkBytes = 200000;
46
47NuPlayer::GenericSource::GenericSource(
48        const sp<AMessage> &notify,
49        bool uidValid,
50        uid_t uid)
51    : Source(notify),
52      mAudioTimeUs(0),
53      mAudioLastDequeueTimeUs(0),
54      mVideoTimeUs(0),
55      mVideoLastDequeueTimeUs(0),
56      mFetchSubtitleDataGeneration(0),
57      mFetchTimedTextDataGeneration(0),
58      mDurationUs(-1ll),
59      mAudioIsVorbis(false),
60      mIsSecure(false),
61      mIsStreaming(false),
62      mUIDValid(uidValid),
63      mUID(uid),
64      mFd(-1),
65      mDrmManagerClient(NULL),
66      mBitrate(-1ll),
67      mPendingReadBufferTypes(0) {
68    mBufferingMonitor = new BufferingMonitor(notify);
69    resetDataSource();
70}
71
72void NuPlayer::GenericSource::resetDataSource() {
73    mHTTPService.clear();
74    mHttpSource.clear();
75    mUri.clear();
76    mUriHeaders.clear();
77    if (mFd >= 0) {
78        close(mFd);
79        mFd = -1;
80    }
81    mOffset = 0;
82    mLength = 0;
83    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
84    mDecryptHandle = NULL;
85    mDrmManagerClient = NULL;
86    mStarted = false;
87    mStopRead = true;
88
89    if (mBufferingMonitorLooper != NULL) {
90        mBufferingMonitorLooper->unregisterHandler(mBufferingMonitor->id());
91        mBufferingMonitorLooper->stop();
92        mBufferingMonitorLooper = NULL;
93    }
94    mBufferingMonitor->stop();
95}
96
97status_t NuPlayer::GenericSource::setDataSource(
98        const sp<IMediaHTTPService> &httpService,
99        const char *url,
100        const KeyedVector<String8, String8> *headers) {
101    resetDataSource();
102
103    mHTTPService = httpService;
104    mUri = url;
105
106    if (headers) {
107        mUriHeaders = *headers;
108    }
109
110    // delay data source creation to prepareAsync() to avoid blocking
111    // the calling thread in setDataSource for any significant time.
112    return OK;
113}
114
115status_t NuPlayer::GenericSource::setDataSource(
116        int fd, int64_t offset, int64_t length) {
117    resetDataSource();
118
119    mFd = dup(fd);
120    mOffset = offset;
121    mLength = length;
122
123    // delay data source creation to prepareAsync() to avoid blocking
124    // the calling thread in setDataSource for any significant time.
125    return OK;
126}
127
128status_t NuPlayer::GenericSource::setDataSource(const sp<DataSource>& source) {
129    resetDataSource();
130    mDataSource = source;
131    return OK;
132}
133
134sp<MetaData> NuPlayer::GenericSource::getFileFormatMeta() const {
135    return mFileMeta;
136}
137
138status_t NuPlayer::GenericSource::initFromDataSource() {
139    sp<IMediaExtractor> extractor;
140    CHECK(mDataSource != NULL);
141
142    extractor = MediaExtractor::Create(mDataSource, NULL);
143
144    if (extractor == NULL) {
145        return UNKNOWN_ERROR;
146    }
147
148    mFileMeta = extractor->getMetaData();
149    if (mFileMeta != NULL) {
150        int64_t duration;
151        if (mFileMeta->findInt64(kKeyDuration, &duration)) {
152            mDurationUs = duration;
153        }
154    }
155
156    int32_t totalBitrate = 0;
157
158    size_t numtracks = extractor->countTracks();
159    if (numtracks == 0) {
160        return UNKNOWN_ERROR;
161    }
162
163    for (size_t i = 0; i < numtracks; ++i) {
164        sp<IMediaSource> track = extractor->getTrack(i);
165        if (track == NULL) {
166            continue;
167        }
168
169        sp<MetaData> meta = extractor->getTrackMetaData(i);
170        if (meta == NULL) {
171            ALOGE("no metadata for track %zu", i);
172            return UNKNOWN_ERROR;
173        }
174
175        const char *mime;
176        CHECK(meta->findCString(kKeyMIMEType, &mime));
177
178        // Do the string compare immediately with "mime",
179        // we can't assume "mime" would stay valid after another
180        // extractor operation, some extractors might modify meta
181        // during getTrack() and make it invalid.
182        if (!strncasecmp(mime, "audio/", 6)) {
183            if (mAudioTrack.mSource == NULL) {
184                mAudioTrack.mIndex = i;
185                mAudioTrack.mSource = track;
186                mAudioTrack.mPackets =
187                    new AnotherPacketSource(mAudioTrack.mSource->getFormat());
188
189                if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) {
190                    mAudioIsVorbis = true;
191                } else {
192                    mAudioIsVorbis = false;
193                }
194            }
195        } else if (!strncasecmp(mime, "video/", 6)) {
196            if (mVideoTrack.mSource == NULL) {
197                mVideoTrack.mIndex = i;
198                mVideoTrack.mSource = track;
199                mVideoTrack.mPackets =
200                    new AnotherPacketSource(mVideoTrack.mSource->getFormat());
201
202                // check if the source requires secure buffers
203                int32_t secure;
204                if (meta->findInt32(kKeyRequiresSecureBuffers, &secure)
205                        && secure) {
206                    mIsSecure = true;
207                    if (mUIDValid) {
208                        extractor->setUID(mUID);
209                    }
210                }
211            }
212        }
213
214        mSources.push(track);
215        int64_t durationUs;
216        if (meta->findInt64(kKeyDuration, &durationUs)) {
217            if (durationUs > mDurationUs) {
218                mDurationUs = durationUs;
219            }
220        }
221
222        int32_t bitrate;
223        if (totalBitrate >= 0 && meta->findInt32(kKeyBitRate, &bitrate)) {
224            totalBitrate += bitrate;
225        } else {
226            totalBitrate = -1;
227        }
228    }
229
230    if (mSources.size() == 0) {
231        ALOGE("b/23705695");
232        return UNKNOWN_ERROR;
233    }
234
235    mBitrate = totalBitrate;
236
237    return OK;
238}
239
240status_t NuPlayer::GenericSource::startSources() {
241    // Start the selected A/V tracks now before we start buffering.
242    // Widevine sources might re-initialize crypto when starting, if we delay
243    // this to start(), all data buffered during prepare would be wasted.
244    // (We don't actually start reading until start().)
245    //
246    // TODO: this logic may no longer be relevant after the removal of widevine
247    // support
248    if (mAudioTrack.mSource != NULL && mAudioTrack.mSource->start() != OK) {
249        ALOGE("failed to start audio track!");
250        return UNKNOWN_ERROR;
251    }
252
253    if (mVideoTrack.mSource != NULL && mVideoTrack.mSource->start() != OK) {
254        ALOGE("failed to start video track!");
255        return UNKNOWN_ERROR;
256    }
257
258    return OK;
259}
260
261int64_t NuPlayer::GenericSource::getLastReadPosition() {
262    if (mAudioTrack.mSource != NULL) {
263        return mAudioTimeUs;
264    } else if (mVideoTrack.mSource != NULL) {
265        return mVideoTimeUs;
266    } else {
267        return 0;
268    }
269}
270
271status_t NuPlayer::GenericSource::setBuffers(
272        bool audio, Vector<MediaBuffer *> &buffers) {
273    if (mIsSecure && !audio && mVideoTrack.mSource != NULL) {
274        return mVideoTrack.mSource->setBuffers(buffers);
275    }
276    return INVALID_OPERATION;
277}
278
279bool NuPlayer::GenericSource::isStreaming() const {
280    return mIsStreaming;
281}
282
283void NuPlayer::GenericSource::setOffloadAudio(bool offload) {
284    mBufferingMonitor->setOffloadAudio(offload);
285}
286
287NuPlayer::GenericSource::~GenericSource() {
288    if (mLooper != NULL) {
289        mLooper->unregisterHandler(id());
290        mLooper->stop();
291    }
292    resetDataSource();
293}
294
295void NuPlayer::GenericSource::prepareAsync() {
296    if (mLooper == NULL) {
297        mLooper = new ALooper;
298        mLooper->setName("generic");
299        mLooper->start();
300
301        mLooper->registerHandler(this);
302    }
303
304    sp<AMessage> msg = new AMessage(kWhatPrepareAsync, this);
305    msg->post();
306}
307
308void NuPlayer::GenericSource::onPrepareAsync() {
309    // delayed data source creation
310    if (mDataSource == NULL) {
311        // set to false first, if the extractor
312        // comes back as secure, set it to true then.
313        mIsSecure = false;
314
315        if (!mUri.empty()) {
316            const char* uri = mUri.c_str();
317            String8 contentType;
318
319            if (!strncasecmp("http://", uri, 7) || !strncasecmp("https://", uri, 8)) {
320                mHttpSource = DataSource::CreateMediaHTTP(mHTTPService);
321                if (mHttpSource == NULL) {
322                    ALOGE("Failed to create http source!");
323                    notifyPreparedAndCleanup(UNKNOWN_ERROR);
324                    return;
325                }
326            }
327
328            mDataSource = DataSource::CreateFromURI(
329                   mHTTPService, uri, &mUriHeaders, &contentType,
330                   static_cast<HTTPBase *>(mHttpSource.get()));
331        } else {
332            mDataSource = new FileSource(mFd, mOffset, mLength);
333            mFd = -1;
334        }
335
336        if (mDataSource == NULL) {
337            ALOGE("Failed to create data source!");
338            notifyPreparedAndCleanup(UNKNOWN_ERROR);
339            return;
340        }
341    }
342
343    if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
344        mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get());
345    }
346
347    // For cached streaming cases, we need to wait for enough
348    // buffering before reporting prepared.
349    mIsStreaming = (mCachedSource != NULL);
350
351    // init extractor from data source
352    status_t err = initFromDataSource();
353
354    if (err != OK) {
355        ALOGE("Failed to init from data source!");
356        notifyPreparedAndCleanup(err);
357        return;
358    }
359
360    if (mVideoTrack.mSource != NULL) {
361        sp<MetaData> meta = doGetFormatMeta(false /* audio */);
362        sp<AMessage> msg = new AMessage;
363        err = convertMetaDataToMessage(meta, &msg);
364        if(err != OK) {
365            notifyPreparedAndCleanup(err);
366            return;
367        }
368        notifyVideoSizeChanged(msg);
369    }
370
371    notifyFlagsChanged(
372            (mIsSecure ? FLAG_SECURE : 0)
373            | (mDecryptHandle != NULL ? FLAG_PROTECTED : 0)
374            | FLAG_CAN_PAUSE
375            | FLAG_CAN_SEEK_BACKWARD
376            | FLAG_CAN_SEEK_FORWARD
377            | FLAG_CAN_SEEK);
378
379    if (mIsSecure) {
380        // secure decoders must be instantiated before starting widevine source
381        //
382        // TODO: mIsSecure and FLAG_SECURE may be obsolete, revisit after
383        // removing widevine
384        sp<AMessage> reply = new AMessage(kWhatSecureDecodersInstantiated, this);
385        notifyInstantiateSecureDecoders(reply);
386    } else {
387        finishPrepareAsync();
388    }
389}
390
391void NuPlayer::GenericSource::onSecureDecodersInstantiated(status_t err) {
392    if (err != OK) {
393        ALOGE("Failed to instantiate secure decoders!");
394        notifyPreparedAndCleanup(err);
395        return;
396    }
397    finishPrepareAsync();
398}
399
400void NuPlayer::GenericSource::finishPrepareAsync() {
401    status_t err = startSources();
402    if (err != OK) {
403        ALOGE("Failed to init start data source!");
404        notifyPreparedAndCleanup(err);
405        return;
406    }
407
408    if (mIsStreaming) {
409        if (mBufferingMonitorLooper == NULL) {
410            mBufferingMonitor->prepare(mCachedSource, mDurationUs, mBitrate,
411                    mIsStreaming);
412
413            mBufferingMonitorLooper = new ALooper;
414            mBufferingMonitorLooper->setName("GSBMonitor");
415            mBufferingMonitorLooper->start();
416            mBufferingMonitorLooper->registerHandler(mBufferingMonitor);
417        }
418
419        mBufferingMonitor->ensureCacheIsFetching();
420        mBufferingMonitor->restartPollBuffering();
421    } else {
422        notifyPrepared();
423    }
424}
425
426void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
427    if (err != OK) {
428        {
429            sp<DataSource> dataSource = mDataSource;
430            sp<NuCachedSource2> cachedSource = mCachedSource;
431            sp<DataSource> httpSource = mHttpSource;
432            {
433                Mutex::Autolock _l(mDisconnectLock);
434                mDataSource.clear();
435                mDecryptHandle = NULL;
436                mDrmManagerClient = NULL;
437                mCachedSource.clear();
438                mHttpSource.clear();
439            }
440        }
441        mBitrate = -1;
442
443        mBufferingMonitor->cancelPollBuffering();
444    }
445    notifyPrepared(err);
446}
447
448void NuPlayer::GenericSource::start() {
449    ALOGI("start");
450
451    mStopRead = false;
452    if (mAudioTrack.mSource != NULL) {
453        postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
454    }
455
456    if (mVideoTrack.mSource != NULL) {
457        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
458    }
459
460    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
461    mStarted = true;
462
463    (new AMessage(kWhatStart, this))->post();
464}
465
466void NuPlayer::GenericSource::stop() {
467    // nothing to do, just account for DRM playback status
468    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
469    mStarted = false;
470}
471
472void NuPlayer::GenericSource::pause() {
473    // nothing to do, just account for DRM playback status
474    setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
475    mStarted = false;
476}
477
478void NuPlayer::GenericSource::resume() {
479    // nothing to do, just account for DRM playback status
480    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
481    mStarted = true;
482
483    (new AMessage(kWhatResume, this))->post();
484}
485
486void NuPlayer::GenericSource::disconnect() {
487    sp<DataSource> dataSource, httpSource;
488    {
489        Mutex::Autolock _l(mDisconnectLock);
490        dataSource = mDataSource;
491        httpSource = mHttpSource;
492    }
493
494    if (dataSource != NULL) {
495        // disconnect data source
496        if (dataSource->flags() & DataSource::kIsCachingDataSource) {
497            static_cast<NuCachedSource2 *>(dataSource.get())->disconnect();
498        }
499    } else if (httpSource != NULL) {
500        static_cast<HTTPBase *>(httpSource.get())->disconnect();
501    }
502}
503
504void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
505    if (mDecryptHandle != NULL) {
506        mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
507    }
508    mSubtitleTrack.mPackets = new AnotherPacketSource(NULL);
509    mTimedTextTrack.mPackets = new AnotherPacketSource(NULL);
510}
511
512status_t NuPlayer::GenericSource::feedMoreTSData() {
513    return OK;
514}
515
516void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
517    switch (msg->what()) {
518      case kWhatPrepareAsync:
519      {
520          onPrepareAsync();
521          break;
522      }
523      case kWhatFetchSubtitleData:
524      {
525          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
526                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
527          break;
528      }
529
530      case kWhatFetchTimedTextData:
531      {
532          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
533                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
534          break;
535      }
536
537      case kWhatSendSubtitleData:
538      {
539          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
540                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
541          break;
542      }
543
544      case kWhatSendGlobalTimedTextData:
545      {
546          sendGlobalTextData(kWhatTimedTextData, mFetchTimedTextDataGeneration, msg);
547          break;
548      }
549      case kWhatSendTimedTextData:
550      {
551          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
552                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
553          break;
554      }
555
556      case kWhatChangeAVSource:
557      {
558          int32_t trackIndex;
559          CHECK(msg->findInt32("trackIndex", &trackIndex));
560          const sp<IMediaSource> source = mSources.itemAt(trackIndex);
561
562          Track* track;
563          const char *mime;
564          media_track_type trackType, counterpartType;
565          sp<MetaData> meta = source->getFormat();
566          meta->findCString(kKeyMIMEType, &mime);
567          if (!strncasecmp(mime, "audio/", 6)) {
568              track = &mAudioTrack;
569              trackType = MEDIA_TRACK_TYPE_AUDIO;
570              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
571          } else {
572              CHECK(!strncasecmp(mime, "video/", 6));
573              track = &mVideoTrack;
574              trackType = MEDIA_TRACK_TYPE_VIDEO;
575              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
576          }
577
578
579          if (track->mSource != NULL) {
580              track->mSource->stop();
581          }
582          track->mSource = source;
583          track->mSource->start();
584          track->mIndex = trackIndex;
585
586          int64_t timeUs, actualTimeUs;
587          const bool formatChange = true;
588          if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
589              timeUs = mAudioLastDequeueTimeUs;
590          } else {
591              timeUs = mVideoLastDequeueTimeUs;
592          }
593          readBuffer(trackType, timeUs, MediaPlayerSeekMode::SEEK_PREVIOUS_SYNC /* mode */,
594                  &actualTimeUs, formatChange);
595          readBuffer(counterpartType, -1, MediaPlayerSeekMode::SEEK_PREVIOUS_SYNC /* mode */,
596                  NULL, !formatChange);
597          ALOGV("timeUs %lld actualTimeUs %lld", (long long)timeUs, (long long)actualTimeUs);
598
599          break;
600      }
601
602      case kWhatStart:
603      case kWhatResume:
604      {
605          mBufferingMonitor->restartPollBuffering();
606          break;
607      }
608
609      case kWhatGetFormat:
610      {
611          onGetFormatMeta(msg);
612          break;
613      }
614
615      case kWhatGetSelectedTrack:
616      {
617          onGetSelectedTrack(msg);
618          break;
619      }
620
621      case kWhatSelectTrack:
622      {
623          onSelectTrack(msg);
624          break;
625      }
626
627      case kWhatSeek:
628      {
629          onSeek(msg);
630          break;
631      }
632
633      case kWhatReadBuffer:
634      {
635          onReadBuffer(msg);
636          break;
637      }
638
639      case kWhatSecureDecodersInstantiated:
640      {
641          int32_t err;
642          CHECK(msg->findInt32("err", &err));
643          onSecureDecodersInstantiated(err);
644          break;
645      }
646
647      default:
648          Source::onMessageReceived(msg);
649          break;
650    }
651}
652
653void NuPlayer::GenericSource::fetchTextData(
654        uint32_t sendWhat,
655        media_track_type type,
656        int32_t curGen,
657        const sp<AnotherPacketSource>& packets,
658        const sp<AMessage>& msg) {
659    int32_t msgGeneration;
660    CHECK(msg->findInt32("generation", &msgGeneration));
661    if (msgGeneration != curGen) {
662        // stale
663        return;
664    }
665
666    int32_t avail;
667    if (packets->hasBufferAvailable(&avail)) {
668        return;
669    }
670
671    int64_t timeUs;
672    CHECK(msg->findInt64("timeUs", &timeUs));
673
674    int64_t subTimeUs;
675    readBuffer(type, timeUs, MediaPlayerSeekMode::SEEK_PREVIOUS_SYNC /* mode */, &subTimeUs);
676
677    int64_t delayUs = subTimeUs - timeUs;
678    if (msg->what() == kWhatFetchSubtitleData) {
679        const int64_t oneSecUs = 1000000ll;
680        delayUs -= oneSecUs;
681    }
682    sp<AMessage> msg2 = new AMessage(sendWhat, this);
683    msg2->setInt32("generation", msgGeneration);
684    msg2->post(delayUs < 0 ? 0 : delayUs);
685}
686
687void NuPlayer::GenericSource::sendTextData(
688        uint32_t what,
689        media_track_type type,
690        int32_t curGen,
691        const sp<AnotherPacketSource>& packets,
692        const sp<AMessage>& msg) {
693    int32_t msgGeneration;
694    CHECK(msg->findInt32("generation", &msgGeneration));
695    if (msgGeneration != curGen) {
696        // stale
697        return;
698    }
699
700    int64_t subTimeUs;
701    if (packets->nextBufferTime(&subTimeUs) != OK) {
702        return;
703    }
704
705    int64_t nextSubTimeUs;
706    readBuffer(type, -1, MediaPlayerSeekMode::SEEK_PREVIOUS_SYNC /* mode */, &nextSubTimeUs);
707
708    sp<ABuffer> buffer;
709    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
710    if (dequeueStatus == OK) {
711        sp<AMessage> notify = dupNotify();
712        notify->setInt32("what", what);
713        notify->setBuffer("buffer", buffer);
714        notify->post();
715
716        const int64_t delayUs = nextSubTimeUs - subTimeUs;
717        msg->post(delayUs < 0 ? 0 : delayUs);
718    }
719}
720
721void NuPlayer::GenericSource::sendGlobalTextData(
722        uint32_t what,
723        int32_t curGen,
724        sp<AMessage> msg) {
725    int32_t msgGeneration;
726    CHECK(msg->findInt32("generation", &msgGeneration));
727    if (msgGeneration != curGen) {
728        // stale
729        return;
730    }
731
732    uint32_t textType;
733    const void *data;
734    size_t size = 0;
735    if (mTimedTextTrack.mSource->getFormat()->findData(
736                    kKeyTextFormatData, &textType, &data, &size)) {
737        mGlobalTimedText = new ABuffer(size);
738        if (mGlobalTimedText->data()) {
739            memcpy(mGlobalTimedText->data(), data, size);
740            sp<AMessage> globalMeta = mGlobalTimedText->meta();
741            globalMeta->setInt64("timeUs", 0);
742            globalMeta->setString("mime", MEDIA_MIMETYPE_TEXT_3GPP);
743            globalMeta->setInt32("global", 1);
744            sp<AMessage> notify = dupNotify();
745            notify->setInt32("what", what);
746            notify->setBuffer("buffer", mGlobalTimedText);
747            notify->post();
748        }
749    }
750}
751
752sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
753    sp<AMessage> msg = new AMessage(kWhatGetFormat, this);
754    msg->setInt32("audio", audio);
755
756    sp<AMessage> response;
757    sp<RefBase> format;
758    status_t err = msg->postAndAwaitResponse(&response);
759    if (err == OK && response != NULL) {
760        CHECK(response->findObject("format", &format));
761        return static_cast<MetaData*>(format.get());
762    } else {
763        return NULL;
764    }
765}
766
767void NuPlayer::GenericSource::onGetFormatMeta(const sp<AMessage>& msg) const {
768    int32_t audio;
769    CHECK(msg->findInt32("audio", &audio));
770
771    sp<AMessage> response = new AMessage;
772    sp<MetaData> format = doGetFormatMeta(audio);
773    response->setObject("format", format);
774
775    sp<AReplyToken> replyID;
776    CHECK(msg->senderAwaitsResponse(&replyID));
777    response->postReply(replyID);
778}
779
780sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
781    sp<IMediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
782
783    if (source == NULL) {
784        return NULL;
785    }
786
787    return source->getFormat();
788}
789
790status_t NuPlayer::GenericSource::dequeueAccessUnit(
791        bool audio, sp<ABuffer> *accessUnit) {
792    if (audio && !mStarted) {
793        return -EWOULDBLOCK;
794    }
795
796    Track *track = audio ? &mAudioTrack : &mVideoTrack;
797
798    if (track->mSource == NULL) {
799        return -EWOULDBLOCK;
800    }
801
802    status_t finalResult;
803    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
804        if (finalResult == OK) {
805            postReadBuffer(
806                    audio ? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
807            return -EWOULDBLOCK;
808        }
809        return finalResult;
810    }
811
812    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
813
814    // start pulling in more buffers if we only have one (or no) buffer left
815    // so that decoder has less chance of being starved
816    if (track->mPackets->getAvailableBufferCount(&finalResult) < 2) {
817        postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
818    }
819
820    if (result != OK) {
821        if (mSubtitleTrack.mSource != NULL) {
822            mSubtitleTrack.mPackets->clear();
823            mFetchSubtitleDataGeneration++;
824        }
825        if (mTimedTextTrack.mSource != NULL) {
826            mTimedTextTrack.mPackets->clear();
827            mFetchTimedTextDataGeneration++;
828        }
829        return result;
830    }
831
832    int64_t timeUs;
833    status_t eosResult; // ignored
834    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
835    if (audio) {
836        mAudioLastDequeueTimeUs = timeUs;
837        mBufferingMonitor->updateDequeuedBufferTime(timeUs);
838    } else {
839        mVideoLastDequeueTimeUs = timeUs;
840    }
841
842    if (mSubtitleTrack.mSource != NULL
843            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
844        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, this);
845        msg->setInt64("timeUs", timeUs);
846        msg->setInt32("generation", mFetchSubtitleDataGeneration);
847        msg->post();
848    }
849
850    if (mTimedTextTrack.mSource != NULL
851            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
852        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, this);
853        msg->setInt64("timeUs", timeUs);
854        msg->setInt32("generation", mFetchTimedTextDataGeneration);
855        msg->post();
856    }
857
858    return result;
859}
860
861status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
862    *durationUs = mDurationUs;
863    return OK;
864}
865
866size_t NuPlayer::GenericSource::getTrackCount() const {
867    return mSources.size();
868}
869
870sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
871    size_t trackCount = mSources.size();
872    if (trackIndex >= trackCount) {
873        return NULL;
874    }
875
876    sp<AMessage> format = new AMessage();
877    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
878    if (meta == NULL) {
879        ALOGE("no metadata for track %zu", trackIndex);
880        return NULL;
881    }
882
883    const char *mime;
884    CHECK(meta->findCString(kKeyMIMEType, &mime));
885    format->setString("mime", mime);
886
887    int32_t trackType;
888    if (!strncasecmp(mime, "video/", 6)) {
889        trackType = MEDIA_TRACK_TYPE_VIDEO;
890    } else if (!strncasecmp(mime, "audio/", 6)) {
891        trackType = MEDIA_TRACK_TYPE_AUDIO;
892    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
893        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
894    } else {
895        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
896    }
897    format->setInt32("type", trackType);
898
899    const char *lang;
900    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
901        lang = "und";
902    }
903    format->setString("language", lang);
904
905    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
906        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
907        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
908        meta->findInt32(kKeyTrackIsDefault, &isDefault);
909        meta->findInt32(kKeyTrackIsForced, &isForced);
910
911        format->setInt32("auto", !!isAutoselect);
912        format->setInt32("default", !!isDefault);
913        format->setInt32("forced", !!isForced);
914    }
915
916    return format;
917}
918
919ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
920    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, this);
921    msg->setInt32("type", type);
922
923    sp<AMessage> response;
924    int32_t index;
925    status_t err = msg->postAndAwaitResponse(&response);
926    if (err == OK && response != NULL) {
927        CHECK(response->findInt32("index", &index));
928        return index;
929    } else {
930        return -1;
931    }
932}
933
934void NuPlayer::GenericSource::onGetSelectedTrack(const sp<AMessage>& msg) const {
935    int32_t tmpType;
936    CHECK(msg->findInt32("type", &tmpType));
937    media_track_type type = (media_track_type)tmpType;
938
939    sp<AMessage> response = new AMessage;
940    ssize_t index = doGetSelectedTrack(type);
941    response->setInt32("index", index);
942
943    sp<AReplyToken> replyID;
944    CHECK(msg->senderAwaitsResponse(&replyID));
945    response->postReply(replyID);
946}
947
948ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
949    const Track *track = NULL;
950    switch (type) {
951    case MEDIA_TRACK_TYPE_VIDEO:
952        track = &mVideoTrack;
953        break;
954    case MEDIA_TRACK_TYPE_AUDIO:
955        track = &mAudioTrack;
956        break;
957    case MEDIA_TRACK_TYPE_TIMEDTEXT:
958        track = &mTimedTextTrack;
959        break;
960    case MEDIA_TRACK_TYPE_SUBTITLE:
961        track = &mSubtitleTrack;
962        break;
963    default:
964        break;
965    }
966
967    if (track != NULL && track->mSource != NULL) {
968        return track->mIndex;
969    }
970
971    return -1;
972}
973
974status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select, int64_t timeUs) {
975    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
976    sp<AMessage> msg = new AMessage(kWhatSelectTrack, this);
977    msg->setInt32("trackIndex", trackIndex);
978    msg->setInt32("select", select);
979    msg->setInt64("timeUs", timeUs);
980
981    sp<AMessage> response;
982    status_t err = msg->postAndAwaitResponse(&response);
983    if (err == OK && response != NULL) {
984        CHECK(response->findInt32("err", &err));
985    }
986
987    return err;
988}
989
990void NuPlayer::GenericSource::onSelectTrack(const sp<AMessage>& msg) {
991    int32_t trackIndex, select;
992    int64_t timeUs;
993    CHECK(msg->findInt32("trackIndex", &trackIndex));
994    CHECK(msg->findInt32("select", &select));
995    CHECK(msg->findInt64("timeUs", &timeUs));
996
997    sp<AMessage> response = new AMessage;
998    status_t err = doSelectTrack(trackIndex, select, timeUs);
999    response->setInt32("err", err);
1000
1001    sp<AReplyToken> replyID;
1002    CHECK(msg->senderAwaitsResponse(&replyID));
1003    response->postReply(replyID);
1004}
1005
1006status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select, int64_t timeUs) {
1007    if (trackIndex >= mSources.size()) {
1008        return BAD_INDEX;
1009    }
1010
1011    if (!select) {
1012        Track* track = NULL;
1013        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
1014            track = &mSubtitleTrack;
1015            mFetchSubtitleDataGeneration++;
1016        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
1017            track = &mTimedTextTrack;
1018            mFetchTimedTextDataGeneration++;
1019        }
1020        if (track == NULL) {
1021            return INVALID_OPERATION;
1022        }
1023        track->mSource->stop();
1024        track->mSource = NULL;
1025        track->mPackets->clear();
1026        return OK;
1027    }
1028
1029    const sp<IMediaSource> source = mSources.itemAt(trackIndex);
1030    sp<MetaData> meta = source->getFormat();
1031    const char *mime;
1032    CHECK(meta->findCString(kKeyMIMEType, &mime));
1033    if (!strncasecmp(mime, "text/", 5)) {
1034        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
1035        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
1036        if (track->mSource != NULL && track->mIndex == trackIndex) {
1037            return OK;
1038        }
1039        track->mIndex = trackIndex;
1040        if (track->mSource != NULL) {
1041            track->mSource->stop();
1042        }
1043        track->mSource = mSources.itemAt(trackIndex);
1044        track->mSource->start();
1045        if (track->mPackets == NULL) {
1046            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
1047        } else {
1048            track->mPackets->clear();
1049            track->mPackets->setFormat(track->mSource->getFormat());
1050
1051        }
1052
1053        if (isSubtitle) {
1054            mFetchSubtitleDataGeneration++;
1055        } else {
1056            mFetchTimedTextDataGeneration++;
1057        }
1058
1059        status_t eosResult; // ignored
1060        if (mSubtitleTrack.mSource != NULL
1061                && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
1062            sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, this);
1063            msg->setInt64("timeUs", timeUs);
1064            msg->setInt32("generation", mFetchSubtitleDataGeneration);
1065            msg->post();
1066        }
1067
1068        sp<AMessage> msg2 = new AMessage(kWhatSendGlobalTimedTextData, this);
1069        msg2->setInt32("generation", mFetchTimedTextDataGeneration);
1070        msg2->post();
1071
1072        if (mTimedTextTrack.mSource != NULL
1073                && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
1074            sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, this);
1075            msg->setInt64("timeUs", timeUs);
1076            msg->setInt32("generation", mFetchTimedTextDataGeneration);
1077            msg->post();
1078        }
1079
1080        return OK;
1081    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
1082        bool audio = !strncasecmp(mime, "audio/", 6);
1083        Track *track = audio ? &mAudioTrack : &mVideoTrack;
1084        if (track->mSource != NULL && track->mIndex == trackIndex) {
1085            return OK;
1086        }
1087
1088        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, this);
1089        msg->setInt32("trackIndex", trackIndex);
1090        msg->post();
1091        return OK;
1092    }
1093
1094    return INVALID_OPERATION;
1095}
1096
1097status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs, MediaPlayerSeekMode mode) {
1098    sp<AMessage> msg = new AMessage(kWhatSeek, this);
1099    msg->setInt64("seekTimeUs", seekTimeUs);
1100    msg->setInt32("mode", mode);
1101
1102    sp<AMessage> response;
1103    status_t err = msg->postAndAwaitResponse(&response);
1104    if (err == OK && response != NULL) {
1105        CHECK(response->findInt32("err", &err));
1106    }
1107
1108    return err;
1109}
1110
1111void NuPlayer::GenericSource::onSeek(const sp<AMessage>& msg) {
1112    int64_t seekTimeUs;
1113    int32_t mode;
1114    CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1115    CHECK(msg->findInt32("mode", &mode));
1116
1117    sp<AMessage> response = new AMessage;
1118    status_t err = doSeek(seekTimeUs, (MediaPlayerSeekMode)mode);
1119    response->setInt32("err", err);
1120
1121    sp<AReplyToken> replyID;
1122    CHECK(msg->senderAwaitsResponse(&replyID));
1123    response->postReply(replyID);
1124}
1125
1126status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs, MediaPlayerSeekMode mode) {
1127    mBufferingMonitor->updateDequeuedBufferTime(-1ll);
1128
1129    // If the Widevine source is stopped, do not attempt to read any
1130    // more buffers.
1131    //
1132    // TODO: revisit after widevine is removed.  May be able to
1133    // combine mStopRead with mStarted.
1134    if (mStopRead) {
1135        return INVALID_OPERATION;
1136    }
1137    if (mVideoTrack.mSource != NULL) {
1138        int64_t actualTimeUs;
1139        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, mode, &actualTimeUs);
1140
1141        if (mode != MediaPlayerSeekMode::SEEK_CLOSEST) {
1142            seekTimeUs = actualTimeUs;
1143        }
1144        mVideoLastDequeueTimeUs = actualTimeUs;
1145    }
1146
1147    if (mAudioTrack.mSource != NULL) {
1148        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
1149        mAudioLastDequeueTimeUs = seekTimeUs;
1150    }
1151
1152    setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
1153    if (!mStarted) {
1154        setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
1155    }
1156
1157    // If currently buffering, post kWhatBufferingEnd first, so that
1158    // NuPlayer resumes. Otherwise, if cache hits high watermark
1159    // before new polling happens, no one will resume the playback.
1160    mBufferingMonitor->stopBufferingIfNecessary();
1161    mBufferingMonitor->restartPollBuffering();
1162
1163    return OK;
1164}
1165
1166sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
1167        MediaBuffer* mb,
1168        media_track_type trackType) {
1169    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
1170    size_t outLength = mb->range_length();
1171
1172    if (audio && mAudioIsVorbis) {
1173        outLength += sizeof(int32_t);
1174    }
1175
1176    sp<ABuffer> ab;
1177    if (mIsSecure && !audio) {
1178        // data is already provided in the buffer
1179        ab = new ABuffer(NULL, mb->range_length());
1180        mb->add_ref();
1181        ab->setMediaBufferBase(mb);
1182    } else {
1183        ab = new ABuffer(outLength);
1184        memcpy(ab->data(),
1185               (const uint8_t *)mb->data() + mb->range_offset(),
1186               mb->range_length());
1187    }
1188
1189    if (audio && mAudioIsVorbis) {
1190        int32_t numPageSamples;
1191        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
1192            numPageSamples = -1;
1193        }
1194
1195        uint8_t* abEnd = ab->data() + mb->range_length();
1196        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
1197    }
1198
1199    sp<AMessage> meta = ab->meta();
1200
1201    int64_t timeUs;
1202    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
1203    meta->setInt64("timeUs", timeUs);
1204
1205    if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1206        int32_t layerId;
1207        if (mb->meta_data()->findInt32(kKeyTemporalLayerId, &layerId)) {
1208            meta->setInt32("temporal-layer-id", layerId);
1209        }
1210    }
1211
1212    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
1213        const char *mime;
1214        CHECK(mTimedTextTrack.mSource != NULL
1215                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
1216        meta->setString("mime", mime);
1217    }
1218
1219    int64_t durationUs;
1220    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
1221        meta->setInt64("durationUs", durationUs);
1222    }
1223
1224    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
1225        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
1226    }
1227
1228    uint32_t dataType; // unused
1229    const void *seiData;
1230    size_t seiLength;
1231    if (mb->meta_data()->findData(kKeySEI, &dataType, &seiData, &seiLength)) {
1232        sp<ABuffer> sei = ABuffer::CreateAsCopy(seiData, seiLength);;
1233        meta->setBuffer("sei", sei);
1234    }
1235
1236    const void *mpegUserDataPointer;
1237    size_t mpegUserDataLength;
1238    if (mb->meta_data()->findData(
1239            kKeyMpegUserData, &dataType, &mpegUserDataPointer, &mpegUserDataLength)) {
1240        sp<ABuffer> mpegUserData = ABuffer::CreateAsCopy(mpegUserDataPointer, mpegUserDataLength);
1241        meta->setBuffer("mpegUserData", mpegUserData);
1242    }
1243
1244    mb->release();
1245    mb = NULL;
1246
1247    return ab;
1248}
1249
1250void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
1251    Mutex::Autolock _l(mReadBufferLock);
1252
1253    if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
1254        mPendingReadBufferTypes |= (1 << trackType);
1255        sp<AMessage> msg = new AMessage(kWhatReadBuffer, this);
1256        msg->setInt32("trackType", trackType);
1257        msg->post();
1258    }
1259}
1260
1261void NuPlayer::GenericSource::onReadBuffer(const sp<AMessage>& msg) {
1262    int32_t tmpType;
1263    CHECK(msg->findInt32("trackType", &tmpType));
1264    media_track_type trackType = (media_track_type)tmpType;
1265    readBuffer(trackType);
1266    {
1267        // only protect the variable change, as readBuffer may
1268        // take considerable time.
1269        Mutex::Autolock _l(mReadBufferLock);
1270        mPendingReadBufferTypes &= ~(1 << trackType);
1271    }
1272}
1273
1274void NuPlayer::GenericSource::readBuffer(
1275        media_track_type trackType, int64_t seekTimeUs, MediaPlayerSeekMode mode,
1276        int64_t *actualTimeUs, bool formatChange) {
1277    // Do not read data if Widevine source is stopped
1278    //
1279    // TODO: revisit after widevine is removed.  May be able to
1280    // combine mStopRead with mStarted.
1281    if (mStopRead) {
1282        return;
1283    }
1284    Track *track;
1285    size_t maxBuffers = 1;
1286    switch (trackType) {
1287        case MEDIA_TRACK_TYPE_VIDEO:
1288            track = &mVideoTrack;
1289            maxBuffers = 8;  // too large of a number may influence seeks
1290            break;
1291        case MEDIA_TRACK_TYPE_AUDIO:
1292            track = &mAudioTrack;
1293            maxBuffers = 64;
1294            break;
1295        case MEDIA_TRACK_TYPE_SUBTITLE:
1296            track = &mSubtitleTrack;
1297            break;
1298        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1299            track = &mTimedTextTrack;
1300            break;
1301        default:
1302            TRESPASS();
1303    }
1304
1305    if (track->mSource == NULL) {
1306        return;
1307    }
1308
1309    if (actualTimeUs) {
1310        *actualTimeUs = seekTimeUs;
1311    }
1312
1313    MediaSource::ReadOptions options;
1314
1315    bool seeking = false;
1316    if (seekTimeUs >= 0) {
1317        options.setSeekTo(seekTimeUs, mode);
1318        seeking = true;
1319    }
1320
1321    const bool couldReadMultiple = (track->mSource->supportReadMultiple());
1322
1323    if (couldReadMultiple) {
1324        options.setNonBlocking();
1325    }
1326
1327    for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
1328        Vector<MediaBuffer *> mediaBuffers;
1329        status_t err = NO_ERROR;
1330
1331        if (couldReadMultiple) {
1332            err = track->mSource->readMultiple(
1333                    &mediaBuffers, maxBuffers - numBuffers, &options);
1334        } else {
1335            MediaBuffer *mbuf = NULL;
1336            err = track->mSource->read(&mbuf, &options);
1337            if (err == OK && mbuf != NULL) {
1338                mediaBuffers.push_back(mbuf);
1339            }
1340        }
1341
1342        options.clearNonPersistent();
1343
1344        size_t id = 0;
1345        size_t count = mediaBuffers.size();
1346        for (; id < count; ++id) {
1347            int64_t timeUs;
1348            MediaBuffer *mbuf = mediaBuffers[id];
1349            if (!mbuf->meta_data()->findInt64(kKeyTime, &timeUs)) {
1350                mbuf->meta_data()->dumpToLog();
1351                track->mPackets->signalEOS(ERROR_MALFORMED);
1352                break;
1353            }
1354            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1355                mAudioTimeUs = timeUs;
1356                mBufferingMonitor->updateQueuedTime(true /* isAudio */, timeUs);
1357            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1358                mVideoTimeUs = timeUs;
1359                mBufferingMonitor->updateQueuedTime(false /* isAudio */, timeUs);
1360            }
1361
1362            queueDiscontinuityIfNeeded(seeking, formatChange, trackType, track);
1363
1364            sp<ABuffer> buffer = mediaBufferToABuffer(mbuf, trackType);
1365            if (numBuffers == 0 && actualTimeUs != nullptr) {
1366                *actualTimeUs = timeUs;
1367            }
1368            if (seeking && buffer != nullptr) {
1369                sp<AMessage> meta = buffer->meta();
1370                if (meta != nullptr && mode == MediaPlayerSeekMode::SEEK_CLOSEST
1371                        && seekTimeUs > timeUs) {
1372                    sp<AMessage> extra = new AMessage;
1373                    extra->setInt64("resume-at-mediaTimeUs", seekTimeUs);
1374                    meta->setMessage("extra", extra);
1375                }
1376            }
1377
1378            track->mPackets->queueAccessUnit(buffer);
1379            formatChange = false;
1380            seeking = false;
1381            ++numBuffers;
1382        }
1383        if (id < count) {
1384            // Error, some mediaBuffer doesn't have kKeyTime.
1385            for (; id < count; ++id) {
1386                mediaBuffers[id]->release();
1387            }
1388            break;
1389        }
1390
1391        if (err == WOULD_BLOCK) {
1392            break;
1393        } else if (err == INFO_FORMAT_CHANGED) {
1394#if 0
1395            track->mPackets->queueDiscontinuity(
1396                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1397                    NULL,
1398                    false /* discard */);
1399#endif
1400        } else if (err != OK) {
1401            queueDiscontinuityIfNeeded(seeking, formatChange, trackType, track);
1402            track->mPackets->signalEOS(err);
1403            break;
1404        }
1405    }
1406}
1407
1408void NuPlayer::GenericSource::queueDiscontinuityIfNeeded(
1409        bool seeking, bool formatChange, media_track_type trackType, Track *track) {
1410    // formatChange && seeking: track whose source is changed during selection
1411    // formatChange && !seeking: track whose source is not changed during selection
1412    // !formatChange: normal seek
1413    if ((seeking || formatChange)
1414            && (trackType == MEDIA_TRACK_TYPE_AUDIO
1415            || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1416        ATSParser::DiscontinuityType type = (formatChange && seeking)
1417                ? ATSParser::DISCONTINUITY_FORMATCHANGE
1418                : ATSParser::DISCONTINUITY_NONE;
1419        track->mPackets->queueDiscontinuity(type, NULL /* extra */, true /* discard */);
1420    }
1421}
1422
1423NuPlayer::GenericSource::BufferingMonitor::BufferingMonitor(const sp<AMessage> &notify)
1424    : mNotify(notify),
1425      mDurationUs(-1ll),
1426      mBitrate(-1ll),
1427      mIsStreaming(false),
1428      mAudioTimeUs(0),
1429      mVideoTimeUs(0),
1430      mPollBufferingGeneration(0),
1431      mPrepareBuffering(false),
1432      mBuffering(false),
1433      mPrevBufferPercentage(-1),
1434      mOffloadAudio(false),
1435      mFirstDequeuedBufferRealUs(-1ll),
1436      mFirstDequeuedBufferMediaUs(-1ll),
1437      mlastDequeuedBufferMediaUs(-1ll) {
1438}
1439
1440NuPlayer::GenericSource::BufferingMonitor::~BufferingMonitor() {
1441}
1442
1443void NuPlayer::GenericSource::BufferingMonitor::prepare(
1444        const sp<NuCachedSource2> &cachedSource,
1445        int64_t durationUs,
1446        int64_t bitrate,
1447        bool isStreaming) {
1448    Mutex::Autolock _l(mLock);
1449    prepare_l(cachedSource, durationUs, bitrate, isStreaming);
1450}
1451
1452void NuPlayer::GenericSource::BufferingMonitor::stop() {
1453    Mutex::Autolock _l(mLock);
1454    prepare_l(NULL /* cachedSource */, -1 /* durationUs */,
1455            -1 /* bitrate */, false /* isStreaming */);
1456}
1457
1458void NuPlayer::GenericSource::BufferingMonitor::cancelPollBuffering() {
1459    Mutex::Autolock _l(mLock);
1460    cancelPollBuffering_l();
1461}
1462
1463void NuPlayer::GenericSource::BufferingMonitor::restartPollBuffering() {
1464    Mutex::Autolock _l(mLock);
1465    if (mIsStreaming) {
1466        cancelPollBuffering_l();
1467        onPollBuffering_l();
1468    }
1469}
1470
1471void NuPlayer::GenericSource::BufferingMonitor::stopBufferingIfNecessary() {
1472    Mutex::Autolock _l(mLock);
1473    stopBufferingIfNecessary_l();
1474}
1475
1476void NuPlayer::GenericSource::BufferingMonitor::ensureCacheIsFetching() {
1477    Mutex::Autolock _l(mLock);
1478    ensureCacheIsFetching_l();
1479}
1480
1481void NuPlayer::GenericSource::BufferingMonitor::updateQueuedTime(bool isAudio, int64_t timeUs) {
1482    Mutex::Autolock _l(mLock);
1483    if (isAudio) {
1484        mAudioTimeUs = timeUs;
1485    } else {
1486        mVideoTimeUs = timeUs;
1487    }
1488}
1489
1490void NuPlayer::GenericSource::BufferingMonitor::setOffloadAudio(bool offload) {
1491    Mutex::Autolock _l(mLock);
1492    mOffloadAudio = offload;
1493}
1494
1495void NuPlayer::GenericSource::BufferingMonitor::updateDequeuedBufferTime(int64_t mediaUs) {
1496    Mutex::Autolock _l(mLock);
1497    if (mediaUs < 0) {
1498        mFirstDequeuedBufferRealUs = -1ll;
1499        mFirstDequeuedBufferMediaUs = -1ll;
1500    } else if (mFirstDequeuedBufferRealUs < 0) {
1501        mFirstDequeuedBufferRealUs = ALooper::GetNowUs();
1502        mFirstDequeuedBufferMediaUs = mediaUs;
1503    }
1504    mlastDequeuedBufferMediaUs = mediaUs;
1505}
1506
1507void NuPlayer::GenericSource::BufferingMonitor::prepare_l(
1508        const sp<NuCachedSource2> &cachedSource,
1509        int64_t durationUs,
1510        int64_t bitrate,
1511        bool isStreaming) {
1512
1513    mCachedSource = cachedSource;
1514    mDurationUs = durationUs;
1515    mBitrate = bitrate;
1516    mIsStreaming = isStreaming;
1517    mAudioTimeUs = 0;
1518    mVideoTimeUs = 0;
1519    mPrepareBuffering = (cachedSource != NULL);
1520    cancelPollBuffering_l();
1521    mOffloadAudio = false;
1522    mFirstDequeuedBufferRealUs = -1ll;
1523    mFirstDequeuedBufferMediaUs = -1ll;
1524    mlastDequeuedBufferMediaUs = -1ll;
1525}
1526
1527void NuPlayer::GenericSource::BufferingMonitor::cancelPollBuffering_l() {
1528    mBuffering = false;
1529    ++mPollBufferingGeneration;
1530    mPrevBufferPercentage = -1;
1531}
1532
1533void NuPlayer::GenericSource::BufferingMonitor::notifyBufferingUpdate_l(int32_t percentage) {
1534    // Buffering percent could go backward as it's estimated from remaining
1535    // data and last access time. This could cause the buffering position
1536    // drawn on media control to jitter slightly. Remember previously reported
1537    // percentage and don't allow it to go backward.
1538    if (percentage < mPrevBufferPercentage) {
1539        percentage = mPrevBufferPercentage;
1540    } else if (percentage > 100) {
1541        percentage = 100;
1542    }
1543
1544    mPrevBufferPercentage = percentage;
1545
1546    ALOGV("notifyBufferingUpdate_l: buffering %d%%", percentage);
1547
1548    sp<AMessage> msg = mNotify->dup();
1549    msg->setInt32("what", kWhatBufferingUpdate);
1550    msg->setInt32("percentage", percentage);
1551    msg->post();
1552}
1553
1554void NuPlayer::GenericSource::BufferingMonitor::startBufferingIfNecessary_l() {
1555    if (mPrepareBuffering) {
1556        return;
1557    }
1558
1559    if (!mBuffering) {
1560        ALOGD("startBufferingIfNecessary_l");
1561
1562        mBuffering = true;
1563
1564        ensureCacheIsFetching_l();
1565        sendCacheStats_l();
1566
1567        sp<AMessage> notify = mNotify->dup();
1568        notify->setInt32("what", kWhatPauseOnBufferingStart);
1569        notify->post();
1570    }
1571}
1572
1573void NuPlayer::GenericSource::BufferingMonitor::stopBufferingIfNecessary_l() {
1574    if (mPrepareBuffering) {
1575        ALOGD("stopBufferingIfNecessary_l, mBuffering=%d", mBuffering);
1576
1577        mPrepareBuffering = false;
1578
1579        sp<AMessage> notify = mNotify->dup();
1580        notify->setInt32("what", kWhatPrepared);
1581        notify->setInt32("err", OK);
1582        notify->post();
1583
1584        return;
1585    }
1586
1587    if (mBuffering) {
1588        ALOGD("stopBufferingIfNecessary_l");
1589        mBuffering = false;
1590
1591        sendCacheStats_l();
1592
1593        sp<AMessage> notify = mNotify->dup();
1594        notify->setInt32("what", kWhatResumeOnBufferingEnd);
1595        notify->post();
1596    }
1597}
1598
1599void NuPlayer::GenericSource::BufferingMonitor::sendCacheStats_l() {
1600    int32_t kbps = 0;
1601    status_t err = UNKNOWN_ERROR;
1602
1603    if (mCachedSource != NULL) {
1604        err = mCachedSource->getEstimatedBandwidthKbps(&kbps);
1605    }
1606
1607    if (err == OK) {
1608        sp<AMessage> notify = mNotify->dup();
1609        notify->setInt32("what", kWhatCacheStats);
1610        notify->setInt32("bandwidth", kbps);
1611        notify->post();
1612    }
1613}
1614
1615void NuPlayer::GenericSource::BufferingMonitor::ensureCacheIsFetching_l() {
1616    if (mCachedSource != NULL) {
1617        mCachedSource->resumeFetchingIfNecessary();
1618    }
1619}
1620
1621void NuPlayer::GenericSource::BufferingMonitor::schedulePollBuffering_l() {
1622    sp<AMessage> msg = new AMessage(kWhatPollBuffering, this);
1623    msg->setInt32("generation", mPollBufferingGeneration);
1624    // Enquires buffering status every second.
1625    msg->post(1000000ll);
1626}
1627
1628int64_t NuPlayer::GenericSource::BufferingMonitor::getLastReadPosition_l() {
1629    if (mAudioTimeUs > 0) {
1630        return mAudioTimeUs;
1631    } else if (mVideoTimeUs > 0) {
1632        return mVideoTimeUs;
1633    } else {
1634        return 0;
1635    }
1636}
1637
1638void NuPlayer::GenericSource::BufferingMonitor::onPollBuffering_l() {
1639    status_t finalStatus = UNKNOWN_ERROR;
1640    int64_t cachedDurationUs = -1ll;
1641    ssize_t cachedDataRemaining = -1;
1642
1643    if (mCachedSource != NULL) {
1644        cachedDataRemaining =
1645                mCachedSource->approxDataRemaining(&finalStatus);
1646
1647        if (finalStatus == OK) {
1648            off64_t size;
1649            int64_t bitrate = 0ll;
1650            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
1651                // |bitrate| uses bits/second unit, while size is number of bytes.
1652                bitrate = size * 8000000ll / mDurationUs;
1653            } else if (mBitrate > 0) {
1654                bitrate = mBitrate;
1655            }
1656            if (bitrate > 0) {
1657                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
1658            }
1659        }
1660    }
1661
1662    if (finalStatus != OK) {
1663        ALOGV("onPollBuffering_l: EOS (finalStatus = %d)", finalStatus);
1664
1665        if (finalStatus == ERROR_END_OF_STREAM) {
1666            notifyBufferingUpdate_l(100);
1667        }
1668
1669        stopBufferingIfNecessary_l();
1670        return;
1671    } else if (cachedDurationUs >= 0ll) {
1672        if (mDurationUs > 0ll) {
1673            int64_t cachedPosUs = getLastReadPosition_l() + cachedDurationUs;
1674            int percentage = 100.0 * cachedPosUs / mDurationUs;
1675            if (percentage > 100) {
1676                percentage = 100;
1677            }
1678
1679            notifyBufferingUpdate_l(percentage);
1680        }
1681
1682        ALOGV("onPollBuffering_l: cachedDurationUs %.1f sec",
1683                cachedDurationUs / 1000000.0f);
1684
1685        if (cachedDurationUs < kLowWaterMarkUs) {
1686            // Take into account the data cached in downstream components to try to avoid
1687            // unnecessary pause.
1688            if (mOffloadAudio && mFirstDequeuedBufferRealUs >= 0) {
1689                int64_t downStreamCacheUs = mlastDequeuedBufferMediaUs - mFirstDequeuedBufferMediaUs
1690                        - (ALooper::GetNowUs() - mFirstDequeuedBufferRealUs);
1691                if (downStreamCacheUs > 0) {
1692                    cachedDurationUs += downStreamCacheUs;
1693                }
1694            }
1695
1696            if (cachedDurationUs < kLowWaterMarkUs) {
1697                startBufferingIfNecessary_l();
1698            }
1699        } else {
1700            int64_t highWaterMark = mPrepareBuffering ? kHighWaterMarkUs : kHighWaterMarkRebufferUs;
1701            if (cachedDurationUs > highWaterMark) {
1702                stopBufferingIfNecessary_l();
1703            }
1704        }
1705    } else if (cachedDataRemaining >= 0) {
1706        ALOGV("onPollBuffering_l: cachedDataRemaining %zd bytes",
1707                cachedDataRemaining);
1708
1709        if (cachedDataRemaining < kLowWaterMarkBytes) {
1710            startBufferingIfNecessary_l();
1711        } else if (cachedDataRemaining > kHighWaterMarkBytes) {
1712            stopBufferingIfNecessary_l();
1713        }
1714    }
1715
1716    schedulePollBuffering_l();
1717}
1718
1719void NuPlayer::GenericSource::BufferingMonitor::onMessageReceived(const sp<AMessage> &msg) {
1720    switch (msg->what()) {
1721      case kWhatPollBuffering:
1722      {
1723          int32_t generation;
1724          CHECK(msg->findInt32("generation", &generation));
1725          Mutex::Autolock _l(mLock);
1726          if (generation == mPollBufferingGeneration) {
1727              onPollBuffering_l();
1728          }
1729          break;
1730      }
1731      default:
1732          TRESPASS();
1733          break;
1734    }
1735}
1736
1737}  // namespace android
1738