GenericSource.cpp revision 144868295f75a650a0b487c60f6983a0790fe39a 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17//#define LOG_NDEBUG 0
18#define LOG_TAG "GenericSource"
19
20#include "GenericSource.h"
21
22#include "AnotherPacketSource.h"
23
24#include <media/IMediaHTTPService.h>
25#include <media/stagefright/foundation/ABuffer.h>
26#include <media/stagefright/foundation/ADebug.h>
27#include <media/stagefright/foundation/AMessage.h>
28#include <media/stagefright/DataSource.h>
29#include <media/stagefright/FileSource.h>
30#include <media/stagefright/MediaBuffer.h>
31#include <media/stagefright/MediaDefs.h>
32#include <media/stagefright/MediaExtractor.h>
33#include <media/stagefright/MediaSource.h>
34#include <media/stagefright/MetaData.h>
35#include <media/stagefright/Utils.h>
36#include "../../libstagefright/include/DRMExtractor.h"
37#include "../../libstagefright/include/NuCachedSource2.h"
38#include "../../libstagefright/include/WVMExtractor.h"
39#include "../../libstagefright/include/HTTPBase.h"
40
41namespace android {
42
43static int64_t kLowWaterMarkUs = 2000000ll;  // 2secs
44static int64_t kHighWaterMarkUs = 5000000ll;  // 5secs
45static int64_t kHighWaterMarkRebufferUs = 15000000ll;  // 15secs
46static const ssize_t kLowWaterMarkBytes = 40000;
47static const ssize_t kHighWaterMarkBytes = 200000;
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      mIsWidevine(false),
63      mIsSecure(false),
64      mIsStreaming(false),
65      mUIDValid(uidValid),
66      mUID(uid),
67      mFd(-1),
68      mDrmManagerClient(NULL),
69      mBitrate(-1ll),
70      mPendingReadBufferTypes(0) {
71    mBufferingMonitor = new BufferingMonitor(notify);
72    resetDataSource();
73    DataSource::RegisterDefaultSniffers();
74}
75
76void NuPlayer::GenericSource::resetDataSource() {
77    mHTTPService.clear();
78    mHttpSource.clear();
79    mUri.clear();
80    mUriHeaders.clear();
81    if (mFd >= 0) {
82        close(mFd);
83        mFd = -1;
84    }
85    mOffset = 0;
86    mLength = 0;
87    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
88    mDecryptHandle = NULL;
89    mDrmManagerClient = NULL;
90    mStarted = false;
91    mStopRead = true;
92
93    if (mBufferingMonitorLooper != NULL) {
94        mBufferingMonitorLooper->unregisterHandler(mBufferingMonitor->id());
95        mBufferingMonitorLooper->stop();
96        mBufferingMonitorLooper = NULL;
97    }
98    mBufferingMonitor->stop();
99}
100
101status_t NuPlayer::GenericSource::setDataSource(
102        const sp<IMediaHTTPService> &httpService,
103        const char *url,
104        const KeyedVector<String8, String8> *headers) {
105    resetDataSource();
106
107    mHTTPService = httpService;
108    mUri = url;
109
110    if (headers) {
111        mUriHeaders = *headers;
112    }
113
114    // delay data source creation to prepareAsync() to avoid blocking
115    // the calling thread in setDataSource for any significant time.
116    return OK;
117}
118
119status_t NuPlayer::GenericSource::setDataSource(
120        int fd, int64_t offset, int64_t length) {
121    resetDataSource();
122
123    mFd = dup(fd);
124    mOffset = offset;
125    mLength = length;
126
127    // delay data source creation to prepareAsync() to avoid blocking
128    // the calling thread in setDataSource for any significant time.
129    return OK;
130}
131
132status_t NuPlayer::GenericSource::setDataSource(const sp<DataSource>& source) {
133    resetDataSource();
134    mDataSource = source;
135    return OK;
136}
137
138sp<MetaData> NuPlayer::GenericSource::getFileFormatMeta() const {
139    return mFileMeta;
140}
141
142status_t NuPlayer::GenericSource::initFromDataSource() {
143    sp<IMediaExtractor> extractor;
144    String8 mimeType;
145    float confidence;
146    sp<AMessage> dummy;
147    bool isWidevineStreaming = false;
148
149    CHECK(mDataSource != NULL);
150
151    if (mIsWidevine) {
152        isWidevineStreaming = SniffWVM(
153                mDataSource, &mimeType, &confidence, &dummy);
154        if (!isWidevineStreaming ||
155                strcasecmp(
156                    mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM)) {
157            ALOGE("unsupported widevine mime: %s", mimeType.string());
158            return UNKNOWN_ERROR;
159        }
160    } else if (mIsStreaming) {
161        if (!mDataSource->sniff(&mimeType, &confidence, &dummy)) {
162            return UNKNOWN_ERROR;
163        }
164        isWidevineStreaming = !strcasecmp(
165                mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM);
166    }
167
168    if (isWidevineStreaming) {
169        // we don't want cached source for widevine streaming.
170        mCachedSource.clear();
171        mDataSource = mHttpSource;
172        mWVMExtractor = new WVMExtractor(mDataSource);
173        mWVMExtractor->setAdaptiveStreamingMode(true);
174        if (mUIDValid) {
175            mWVMExtractor->setUID(mUID);
176        }
177        extractor = mWVMExtractor;
178    } else {
179        extractor = MediaExtractor::Create(mDataSource,
180                mimeType.isEmpty() ? NULL : mimeType.string());
181    }
182
183    if (extractor == NULL) {
184        return UNKNOWN_ERROR;
185    }
186
187    if (extractor->getDrmFlag()) {
188        checkDrmStatus(mDataSource);
189    }
190
191    mFileMeta = extractor->getMetaData();
192    if (mFileMeta != NULL) {
193        int64_t duration;
194        if (mFileMeta->findInt64(kKeyDuration, &duration)) {
195            mDurationUs = duration;
196        }
197
198        if (!mIsWidevine) {
199            // Check mime to see if we actually have a widevine source.
200            // If the data source is not URL-type (eg. file source), we
201            // won't be able to tell until now.
202            const char *fileMime;
203            if (mFileMeta->findCString(kKeyMIMEType, &fileMime)
204                    && !strncasecmp(fileMime, "video/wvm", 9)) {
205                mIsWidevine = true;
206            }
207        }
208    }
209
210    int32_t totalBitrate = 0;
211
212    size_t numtracks = extractor->countTracks();
213    if (numtracks == 0) {
214        return UNKNOWN_ERROR;
215    }
216
217    for (size_t i = 0; i < numtracks; ++i) {
218        sp<IMediaSource> track = extractor->getTrack(i);
219        if (track == NULL) {
220            continue;
221        }
222
223        sp<MetaData> meta = extractor->getTrackMetaData(i);
224        if (meta == NULL) {
225            ALOGE("no metadata for track %zu", i);
226            return UNKNOWN_ERROR;
227        }
228
229        const char *mime;
230        CHECK(meta->findCString(kKeyMIMEType, &mime));
231
232        // Do the string compare immediately with "mime",
233        // we can't assume "mime" would stay valid after another
234        // extractor operation, some extractors might modify meta
235        // during getTrack() and make it invalid.
236        if (!strncasecmp(mime, "audio/", 6)) {
237            if (mAudioTrack.mSource == NULL) {
238                mAudioTrack.mIndex = i;
239                mAudioTrack.mSource = track;
240                mAudioTrack.mPackets =
241                    new AnotherPacketSource(mAudioTrack.mSource->getFormat());
242
243                if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) {
244                    mAudioIsVorbis = true;
245                } else {
246                    mAudioIsVorbis = false;
247                }
248            }
249        } else if (!strncasecmp(mime, "video/", 6)) {
250            if (mVideoTrack.mSource == NULL) {
251                mVideoTrack.mIndex = i;
252                mVideoTrack.mSource = track;
253                mVideoTrack.mPackets =
254                    new AnotherPacketSource(mVideoTrack.mSource->getFormat());
255
256                // check if the source requires secure buffers
257                int32_t secure;
258                if (meta->findInt32(kKeyRequiresSecureBuffers, &secure)
259                        && secure) {
260                    mIsSecure = true;
261                    if (mUIDValid) {
262                        extractor->setUID(mUID);
263                    }
264                }
265            }
266        }
267
268        mSources.push(track);
269        int64_t durationUs;
270        if (meta->findInt64(kKeyDuration, &durationUs)) {
271            if (durationUs > mDurationUs) {
272                mDurationUs = durationUs;
273            }
274        }
275
276        int32_t bitrate;
277        if (totalBitrate >= 0 && meta->findInt32(kKeyBitRate, &bitrate)) {
278            totalBitrate += bitrate;
279        } else {
280            totalBitrate = -1;
281        }
282    }
283
284    if (mSources.size() == 0) {
285        ALOGE("b/23705695");
286        return UNKNOWN_ERROR;
287    }
288
289    mBitrate = totalBitrate;
290
291    return OK;
292}
293
294status_t NuPlayer::GenericSource::startSources() {
295    // Start the selected A/V tracks now before we start buffering.
296    // Widevine sources might re-initialize crypto when starting, if we delay
297    // this to start(), all data buffered during prepare would be wasted.
298    // (We don't actually start reading until start().)
299    if (mAudioTrack.mSource != NULL && mAudioTrack.mSource->start() != OK) {
300        ALOGE("failed to start audio track!");
301        return UNKNOWN_ERROR;
302    }
303
304    if (mVideoTrack.mSource != NULL && mVideoTrack.mSource->start() != OK) {
305        ALOGE("failed to start video track!");
306        return UNKNOWN_ERROR;
307    }
308
309    return OK;
310}
311
312void NuPlayer::GenericSource::checkDrmStatus(const sp<DataSource>& dataSource) {
313    dataSource->getDrmInfo(mDecryptHandle, &mDrmManagerClient);
314    if (mDecryptHandle != NULL) {
315        CHECK(mDrmManagerClient);
316        if (RightsStatus::RIGHTS_VALID != mDecryptHandle->status) {
317            sp<AMessage> msg = dupNotify();
318            msg->setInt32("what", kWhatDrmNoLicense);
319            msg->post();
320        }
321    }
322}
323
324int64_t NuPlayer::GenericSource::getLastReadPosition() {
325    if (mAudioTrack.mSource != NULL) {
326        return mAudioTimeUs;
327    } else if (mVideoTrack.mSource != NULL) {
328        return mVideoTimeUs;
329    } else {
330        return 0;
331    }
332}
333
334status_t NuPlayer::GenericSource::setBuffers(
335        bool audio, Vector<MediaBuffer *> &buffers) {
336    if (mIsSecure && !audio && mVideoTrack.mSource != NULL) {
337        return mVideoTrack.mSource->setBuffers(buffers);
338    }
339    return INVALID_OPERATION;
340}
341
342bool NuPlayer::GenericSource::isStreaming() const {
343    return mIsStreaming;
344}
345
346void NuPlayer::GenericSource::setOffloadAudio(bool offload) {
347    mBufferingMonitor->setOffloadAudio(offload);
348}
349
350NuPlayer::GenericSource::~GenericSource() {
351    if (mLooper != NULL) {
352        mLooper->unregisterHandler(id());
353        mLooper->stop();
354    }
355    resetDataSource();
356}
357
358void NuPlayer::GenericSource::prepareAsync() {
359    if (mLooper == NULL) {
360        mLooper = new ALooper;
361        mLooper->setName("generic");
362        mLooper->start();
363
364        mLooper->registerHandler(this);
365    }
366
367    sp<AMessage> msg = new AMessage(kWhatPrepareAsync, this);
368    msg->post();
369}
370
371void NuPlayer::GenericSource::onPrepareAsync() {
372    // delayed data source creation
373    if (mDataSource == NULL) {
374        // set to false first, if the extractor
375        // comes back as secure, set it to true then.
376        mIsSecure = false;
377
378        if (!mUri.empty()) {
379            const char* uri = mUri.c_str();
380            String8 contentType;
381            mIsWidevine = !strncasecmp(uri, "widevine://", 11);
382
383            if (!strncasecmp("http://", uri, 7)
384                    || !strncasecmp("https://", uri, 8)
385                    || mIsWidevine) {
386                mHttpSource = DataSource::CreateMediaHTTP(mHTTPService);
387                if (mHttpSource == NULL) {
388                    ALOGE("Failed to create http source!");
389                    notifyPreparedAndCleanup(UNKNOWN_ERROR);
390                    return;
391                }
392            }
393
394            mDataSource = DataSource::CreateFromURI(
395                   mHTTPService, uri, &mUriHeaders, &contentType,
396                   static_cast<HTTPBase *>(mHttpSource.get()));
397        } else {
398            mIsWidevine = false;
399
400            mDataSource = new FileSource(mFd, mOffset, mLength);
401            mFd = -1;
402        }
403
404        if (mDataSource == NULL) {
405            ALOGE("Failed to create data source!");
406            notifyPreparedAndCleanup(UNKNOWN_ERROR);
407            return;
408        }
409    }
410
411    if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
412        mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get());
413    }
414
415    // For widevine or other cached streaming cases, we need to wait for
416    // enough buffering before reporting prepared.
417    // Note that even when URL doesn't start with widevine://, mIsWidevine
418    // could still be set to true later, if the streaming or file source
419    // is sniffed to be widevine. We don't want to buffer for file source
420    // in that case, so must check the flag now.
421    mIsStreaming = (mIsWidevine || mCachedSource != NULL);
422
423    // init extractor from data source
424    status_t err = initFromDataSource();
425
426    if (err != OK) {
427        ALOGE("Failed to init from data source!");
428        notifyPreparedAndCleanup(err);
429        return;
430    }
431
432    if (mVideoTrack.mSource != NULL) {
433        sp<MetaData> meta = doGetFormatMeta(false /* audio */);
434        sp<AMessage> msg = new AMessage;
435        err = convertMetaDataToMessage(meta, &msg);
436        if(err != OK) {
437            notifyPreparedAndCleanup(err);
438            return;
439        }
440        notifyVideoSizeChanged(msg);
441    }
442
443    notifyFlagsChanged(
444            (mIsSecure ? FLAG_SECURE : 0)
445            | (mDecryptHandle != NULL ? FLAG_PROTECTED : 0)
446            | FLAG_CAN_PAUSE
447            | FLAG_CAN_SEEK_BACKWARD
448            | FLAG_CAN_SEEK_FORWARD
449            | FLAG_CAN_SEEK);
450
451    if (mIsSecure) {
452        // secure decoders must be instantiated before starting widevine source
453        sp<AMessage> reply = new AMessage(kWhatSecureDecodersInstantiated, this);
454        notifyInstantiateSecureDecoders(reply);
455    } else {
456        finishPrepareAsync();
457    }
458}
459
460void NuPlayer::GenericSource::onSecureDecodersInstantiated(status_t err) {
461    if (err != OK) {
462        ALOGE("Failed to instantiate secure decoders!");
463        notifyPreparedAndCleanup(err);
464        return;
465    }
466    finishPrepareAsync();
467}
468
469void NuPlayer::GenericSource::finishPrepareAsync() {
470    status_t err = startSources();
471    if (err != OK) {
472        ALOGE("Failed to init start data source!");
473        notifyPreparedAndCleanup(err);
474        return;
475    }
476
477    if (mIsStreaming) {
478        if (mBufferingMonitorLooper == NULL) {
479            mBufferingMonitor->prepare(mCachedSource, mWVMExtractor, mDurationUs, mBitrate,
480                    mIsStreaming);
481
482            mBufferingMonitorLooper = new ALooper;
483            mBufferingMonitorLooper->setName("GSBMonitor");
484            mBufferingMonitorLooper->start();
485            mBufferingMonitorLooper->registerHandler(mBufferingMonitor);
486        }
487
488        mBufferingMonitor->ensureCacheIsFetching();
489        mBufferingMonitor->restartPollBuffering();
490    } else {
491        notifyPrepared();
492    }
493}
494
495void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
496    if (err != OK) {
497        {
498            sp<DataSource> dataSource = mDataSource;
499            sp<NuCachedSource2> cachedSource = mCachedSource;
500            sp<DataSource> httpSource = mHttpSource;
501            {
502                Mutex::Autolock _l(mDisconnectLock);
503                mDataSource.clear();
504                mDecryptHandle = NULL;
505                mDrmManagerClient = NULL;
506                mCachedSource.clear();
507                mHttpSource.clear();
508            }
509        }
510        mBitrate = -1;
511
512        mBufferingMonitor->cancelPollBuffering();
513    }
514    notifyPrepared(err);
515}
516
517void NuPlayer::GenericSource::start() {
518    ALOGI("start");
519
520    mStopRead = false;
521    if (mAudioTrack.mSource != NULL) {
522        postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
523    }
524
525    if (mVideoTrack.mSource != NULL) {
526        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
527    }
528
529    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
530    mStarted = true;
531
532    (new AMessage(kWhatStart, this))->post();
533}
534
535void NuPlayer::GenericSource::stop() {
536    // nothing to do, just account for DRM playback status
537    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
538    mStarted = false;
539    if (mIsWidevine || mIsSecure) {
540        // For widevine or secure sources we need to prevent any further reads.
541        sp<AMessage> msg = new AMessage(kWhatStopWidevine, this);
542        sp<AMessage> response;
543        (void) msg->postAndAwaitResponse(&response);
544    }
545}
546
547void NuPlayer::GenericSource::pause() {
548    // nothing to do, just account for DRM playback status
549    setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
550    mStarted = false;
551}
552
553void NuPlayer::GenericSource::resume() {
554    // nothing to do, just account for DRM playback status
555    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
556    mStarted = true;
557
558    (new AMessage(kWhatResume, this))->post();
559}
560
561void NuPlayer::GenericSource::disconnect() {
562    sp<DataSource> dataSource, httpSource;
563    {
564        Mutex::Autolock _l(mDisconnectLock);
565        dataSource = mDataSource;
566        httpSource = mHttpSource;
567    }
568
569    if (dataSource != NULL) {
570        // disconnect data source
571        if (dataSource->flags() & DataSource::kIsCachingDataSource) {
572            static_cast<NuCachedSource2 *>(dataSource.get())->disconnect();
573        }
574    } else if (httpSource != NULL) {
575        static_cast<HTTPBase *>(httpSource.get())->disconnect();
576    }
577}
578
579void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
580    if (mDecryptHandle != NULL) {
581        mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
582    }
583    mSubtitleTrack.mPackets = new AnotherPacketSource(NULL);
584    mTimedTextTrack.mPackets = new AnotherPacketSource(NULL);
585}
586
587status_t NuPlayer::GenericSource::feedMoreTSData() {
588    return OK;
589}
590
591void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
592    switch (msg->what()) {
593      case kWhatPrepareAsync:
594      {
595          onPrepareAsync();
596          break;
597      }
598      case kWhatFetchSubtitleData:
599      {
600          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
601                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
602          break;
603      }
604
605      case kWhatFetchTimedTextData:
606      {
607          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
608                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
609          break;
610      }
611
612      case kWhatSendSubtitleData:
613      {
614          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
615                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
616          break;
617      }
618
619      case kWhatSendGlobalTimedTextData:
620      {
621          sendGlobalTextData(kWhatTimedTextData, mFetchTimedTextDataGeneration, msg);
622          break;
623      }
624      case kWhatSendTimedTextData:
625      {
626          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
627                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
628          break;
629      }
630
631      case kWhatChangeAVSource:
632      {
633          int32_t trackIndex;
634          CHECK(msg->findInt32("trackIndex", &trackIndex));
635          const sp<IMediaSource> source = mSources.itemAt(trackIndex);
636
637          Track* track;
638          const char *mime;
639          media_track_type trackType, counterpartType;
640          sp<MetaData> meta = source->getFormat();
641          meta->findCString(kKeyMIMEType, &mime);
642          if (!strncasecmp(mime, "audio/", 6)) {
643              track = &mAudioTrack;
644              trackType = MEDIA_TRACK_TYPE_AUDIO;
645              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
646          } else {
647              CHECK(!strncasecmp(mime, "video/", 6));
648              track = &mVideoTrack;
649              trackType = MEDIA_TRACK_TYPE_VIDEO;
650              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
651          }
652
653
654          if (track->mSource != NULL) {
655              track->mSource->stop();
656          }
657          track->mSource = source;
658          track->mSource->start();
659          track->mIndex = trackIndex;
660
661          int64_t timeUs, actualTimeUs;
662          const bool formatChange = true;
663          if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
664              timeUs = mAudioLastDequeueTimeUs;
665          } else {
666              timeUs = mVideoLastDequeueTimeUs;
667          }
668          readBuffer(trackType, timeUs, false /* precise */, &actualTimeUs, formatChange);
669          readBuffer(counterpartType, -1, false /* precise */, NULL, !formatChange);
670          ALOGV("timeUs %lld actualTimeUs %lld", (long long)timeUs, (long long)actualTimeUs);
671
672          break;
673      }
674
675      case kWhatStart:
676      case kWhatResume:
677      {
678          mBufferingMonitor->restartPollBuffering();
679          break;
680      }
681
682      case kWhatGetFormat:
683      {
684          onGetFormatMeta(msg);
685          break;
686      }
687
688      case kWhatGetSelectedTrack:
689      {
690          onGetSelectedTrack(msg);
691          break;
692      }
693
694      case kWhatSelectTrack:
695      {
696          onSelectTrack(msg);
697          break;
698      }
699
700      case kWhatSeek:
701      {
702          onSeek(msg);
703          break;
704      }
705
706      case kWhatReadBuffer:
707      {
708          onReadBuffer(msg);
709          break;
710      }
711
712      case kWhatSecureDecodersInstantiated:
713      {
714          int32_t err;
715          CHECK(msg->findInt32("err", &err));
716          onSecureDecodersInstantiated(err);
717          break;
718      }
719
720      case kWhatStopWidevine:
721      {
722          // mStopRead is only used for Widevine to prevent the video source
723          // from being read while the associated video decoder is shutting down.
724          mStopRead = true;
725          if (mVideoTrack.mSource != NULL) {
726              mVideoTrack.mPackets->clear();
727          }
728          sp<AMessage> response = new AMessage;
729          sp<AReplyToken> replyID;
730          CHECK(msg->senderAwaitsResponse(&replyID));
731          response->postReply(replyID);
732          break;
733      }
734      default:
735          Source::onMessageReceived(msg);
736          break;
737    }
738}
739
740void NuPlayer::GenericSource::fetchTextData(
741        uint32_t sendWhat,
742        media_track_type type,
743        int32_t curGen,
744        const sp<AnotherPacketSource>& packets,
745        const sp<AMessage>& msg) {
746    int32_t msgGeneration;
747    CHECK(msg->findInt32("generation", &msgGeneration));
748    if (msgGeneration != curGen) {
749        // stale
750        return;
751    }
752
753    int32_t avail;
754    if (packets->hasBufferAvailable(&avail)) {
755        return;
756    }
757
758    int64_t timeUs;
759    CHECK(msg->findInt64("timeUs", &timeUs));
760
761    int64_t subTimeUs;
762    readBuffer(type, timeUs, false /* precise */, &subTimeUs);
763
764    int64_t delayUs = subTimeUs - timeUs;
765    if (msg->what() == kWhatFetchSubtitleData) {
766        const int64_t oneSecUs = 1000000ll;
767        delayUs -= oneSecUs;
768    }
769    sp<AMessage> msg2 = new AMessage(sendWhat, this);
770    msg2->setInt32("generation", msgGeneration);
771    msg2->post(delayUs < 0 ? 0 : delayUs);
772}
773
774void NuPlayer::GenericSource::sendTextData(
775        uint32_t what,
776        media_track_type type,
777        int32_t curGen,
778        const sp<AnotherPacketSource>& packets,
779        const sp<AMessage>& msg) {
780    int32_t msgGeneration;
781    CHECK(msg->findInt32("generation", &msgGeneration));
782    if (msgGeneration != curGen) {
783        // stale
784        return;
785    }
786
787    int64_t subTimeUs;
788    if (packets->nextBufferTime(&subTimeUs) != OK) {
789        return;
790    }
791
792    int64_t nextSubTimeUs;
793    readBuffer(type, -1, false /* precise */, &nextSubTimeUs);
794
795    sp<ABuffer> buffer;
796    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
797    if (dequeueStatus == OK) {
798        sp<AMessage> notify = dupNotify();
799        notify->setInt32("what", what);
800        notify->setBuffer("buffer", buffer);
801        notify->post();
802
803        const int64_t delayUs = nextSubTimeUs - subTimeUs;
804        msg->post(delayUs < 0 ? 0 : delayUs);
805    }
806}
807
808void NuPlayer::GenericSource::sendGlobalTextData(
809        uint32_t what,
810        int32_t curGen,
811        sp<AMessage> msg) {
812    int32_t msgGeneration;
813    CHECK(msg->findInt32("generation", &msgGeneration));
814    if (msgGeneration != curGen) {
815        // stale
816        return;
817    }
818
819    uint32_t textType;
820    const void *data;
821    size_t size = 0;
822    if (mTimedTextTrack.mSource->getFormat()->findData(
823                    kKeyTextFormatData, &textType, &data, &size)) {
824        mGlobalTimedText = new ABuffer(size);
825        if (mGlobalTimedText->data()) {
826            memcpy(mGlobalTimedText->data(), data, size);
827            sp<AMessage> globalMeta = mGlobalTimedText->meta();
828            globalMeta->setInt64("timeUs", 0);
829            globalMeta->setString("mime", MEDIA_MIMETYPE_TEXT_3GPP);
830            globalMeta->setInt32("global", 1);
831            sp<AMessage> notify = dupNotify();
832            notify->setInt32("what", what);
833            notify->setBuffer("buffer", mGlobalTimedText);
834            notify->post();
835        }
836    }
837}
838
839sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
840    sp<AMessage> msg = new AMessage(kWhatGetFormat, this);
841    msg->setInt32("audio", audio);
842
843    sp<AMessage> response;
844    sp<RefBase> format;
845    status_t err = msg->postAndAwaitResponse(&response);
846    if (err == OK && response != NULL) {
847        CHECK(response->findObject("format", &format));
848        return static_cast<MetaData*>(format.get());
849    } else {
850        return NULL;
851    }
852}
853
854void NuPlayer::GenericSource::onGetFormatMeta(const sp<AMessage>& msg) const {
855    int32_t audio;
856    CHECK(msg->findInt32("audio", &audio));
857
858    sp<AMessage> response = new AMessage;
859    sp<MetaData> format = doGetFormatMeta(audio);
860    response->setObject("format", format);
861
862    sp<AReplyToken> replyID;
863    CHECK(msg->senderAwaitsResponse(&replyID));
864    response->postReply(replyID);
865}
866
867sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
868    sp<IMediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
869
870    if (source == NULL) {
871        return NULL;
872    }
873
874    return source->getFormat();
875}
876
877status_t NuPlayer::GenericSource::dequeueAccessUnit(
878        bool audio, sp<ABuffer> *accessUnit) {
879    if (audio && !mStarted) {
880        return -EWOULDBLOCK;
881    }
882
883    Track *track = audio ? &mAudioTrack : &mVideoTrack;
884
885    if (track->mSource == NULL) {
886        return -EWOULDBLOCK;
887    }
888
889    if (mIsWidevine && !audio) {
890        // try to read a buffer as we may not have been able to the last time
891        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
892    }
893
894    status_t finalResult;
895    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
896        if (finalResult == OK) {
897            postReadBuffer(
898                    audio ? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
899            return -EWOULDBLOCK;
900        }
901        return finalResult;
902    }
903
904    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
905
906    // start pulling in more buffers if we only have one (or no) buffer left
907    // so that decoder has less chance of being starved
908    if (track->mPackets->getAvailableBufferCount(&finalResult) < 2) {
909        postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
910    }
911
912    if (result != OK) {
913        if (mSubtitleTrack.mSource != NULL) {
914            mSubtitleTrack.mPackets->clear();
915            mFetchSubtitleDataGeneration++;
916        }
917        if (mTimedTextTrack.mSource != NULL) {
918            mTimedTextTrack.mPackets->clear();
919            mFetchTimedTextDataGeneration++;
920        }
921        return result;
922    }
923
924    int64_t timeUs;
925    status_t eosResult; // ignored
926    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
927    if (audio) {
928        mAudioLastDequeueTimeUs = timeUs;
929        mBufferingMonitor->updateDequeuedBufferTime(timeUs);
930    } else {
931        mVideoLastDequeueTimeUs = timeUs;
932    }
933
934    if (mSubtitleTrack.mSource != NULL
935            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
936        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, this);
937        msg->setInt64("timeUs", timeUs);
938        msg->setInt32("generation", mFetchSubtitleDataGeneration);
939        msg->post();
940    }
941
942    if (mTimedTextTrack.mSource != NULL
943            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
944        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, this);
945        msg->setInt64("timeUs", timeUs);
946        msg->setInt32("generation", mFetchTimedTextDataGeneration);
947        msg->post();
948    }
949
950    return result;
951}
952
953status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
954    *durationUs = mDurationUs;
955    return OK;
956}
957
958size_t NuPlayer::GenericSource::getTrackCount() const {
959    return mSources.size();
960}
961
962sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
963    size_t trackCount = mSources.size();
964    if (trackIndex >= trackCount) {
965        return NULL;
966    }
967
968    sp<AMessage> format = new AMessage();
969    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
970    if (meta == NULL) {
971        ALOGE("no metadata for track %zu", trackIndex);
972        return NULL;
973    }
974
975    const char *mime;
976    CHECK(meta->findCString(kKeyMIMEType, &mime));
977    format->setString("mime", mime);
978
979    int32_t trackType;
980    if (!strncasecmp(mime, "video/", 6)) {
981        trackType = MEDIA_TRACK_TYPE_VIDEO;
982    } else if (!strncasecmp(mime, "audio/", 6)) {
983        trackType = MEDIA_TRACK_TYPE_AUDIO;
984    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
985        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
986    } else {
987        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
988    }
989    format->setInt32("type", trackType);
990
991    const char *lang;
992    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
993        lang = "und";
994    }
995    format->setString("language", lang);
996
997    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
998        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
999        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
1000        meta->findInt32(kKeyTrackIsDefault, &isDefault);
1001        meta->findInt32(kKeyTrackIsForced, &isForced);
1002
1003        format->setInt32("auto", !!isAutoselect);
1004        format->setInt32("default", !!isDefault);
1005        format->setInt32("forced", !!isForced);
1006    }
1007
1008    return format;
1009}
1010
1011ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
1012    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, this);
1013    msg->setInt32("type", type);
1014
1015    sp<AMessage> response;
1016    int32_t index;
1017    status_t err = msg->postAndAwaitResponse(&response);
1018    if (err == OK && response != NULL) {
1019        CHECK(response->findInt32("index", &index));
1020        return index;
1021    } else {
1022        return -1;
1023    }
1024}
1025
1026void NuPlayer::GenericSource::onGetSelectedTrack(const sp<AMessage>& msg) const {
1027    int32_t tmpType;
1028    CHECK(msg->findInt32("type", &tmpType));
1029    media_track_type type = (media_track_type)tmpType;
1030
1031    sp<AMessage> response = new AMessage;
1032    ssize_t index = doGetSelectedTrack(type);
1033    response->setInt32("index", index);
1034
1035    sp<AReplyToken> replyID;
1036    CHECK(msg->senderAwaitsResponse(&replyID));
1037    response->postReply(replyID);
1038}
1039
1040ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
1041    const Track *track = NULL;
1042    switch (type) {
1043    case MEDIA_TRACK_TYPE_VIDEO:
1044        track = &mVideoTrack;
1045        break;
1046    case MEDIA_TRACK_TYPE_AUDIO:
1047        track = &mAudioTrack;
1048        break;
1049    case MEDIA_TRACK_TYPE_TIMEDTEXT:
1050        track = &mTimedTextTrack;
1051        break;
1052    case MEDIA_TRACK_TYPE_SUBTITLE:
1053        track = &mSubtitleTrack;
1054        break;
1055    default:
1056        break;
1057    }
1058
1059    if (track != NULL && track->mSource != NULL) {
1060        return track->mIndex;
1061    }
1062
1063    return -1;
1064}
1065
1066status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select, int64_t timeUs) {
1067    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
1068    sp<AMessage> msg = new AMessage(kWhatSelectTrack, this);
1069    msg->setInt32("trackIndex", trackIndex);
1070    msg->setInt32("select", select);
1071    msg->setInt64("timeUs", timeUs);
1072
1073    sp<AMessage> response;
1074    status_t err = msg->postAndAwaitResponse(&response);
1075    if (err == OK && response != NULL) {
1076        CHECK(response->findInt32("err", &err));
1077    }
1078
1079    return err;
1080}
1081
1082void NuPlayer::GenericSource::onSelectTrack(const sp<AMessage>& msg) {
1083    int32_t trackIndex, select;
1084    int64_t timeUs;
1085    CHECK(msg->findInt32("trackIndex", &trackIndex));
1086    CHECK(msg->findInt32("select", &select));
1087    CHECK(msg->findInt64("timeUs", &timeUs));
1088
1089    sp<AMessage> response = new AMessage;
1090    status_t err = doSelectTrack(trackIndex, select, timeUs);
1091    response->setInt32("err", err);
1092
1093    sp<AReplyToken> replyID;
1094    CHECK(msg->senderAwaitsResponse(&replyID));
1095    response->postReply(replyID);
1096}
1097
1098status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select, int64_t timeUs) {
1099    if (trackIndex >= mSources.size()) {
1100        return BAD_INDEX;
1101    }
1102
1103    if (!select) {
1104        Track* track = NULL;
1105        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
1106            track = &mSubtitleTrack;
1107            mFetchSubtitleDataGeneration++;
1108        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
1109            track = &mTimedTextTrack;
1110            mFetchTimedTextDataGeneration++;
1111        }
1112        if (track == NULL) {
1113            return INVALID_OPERATION;
1114        }
1115        track->mSource->stop();
1116        track->mSource = NULL;
1117        track->mPackets->clear();
1118        return OK;
1119    }
1120
1121    const sp<IMediaSource> source = mSources.itemAt(trackIndex);
1122    sp<MetaData> meta = source->getFormat();
1123    const char *mime;
1124    CHECK(meta->findCString(kKeyMIMEType, &mime));
1125    if (!strncasecmp(mime, "text/", 5)) {
1126        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
1127        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
1128        if (track->mSource != NULL && track->mIndex == trackIndex) {
1129            return OK;
1130        }
1131        track->mIndex = trackIndex;
1132        if (track->mSource != NULL) {
1133            track->mSource->stop();
1134        }
1135        track->mSource = mSources.itemAt(trackIndex);
1136        track->mSource->start();
1137        if (track->mPackets == NULL) {
1138            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
1139        } else {
1140            track->mPackets->clear();
1141            track->mPackets->setFormat(track->mSource->getFormat());
1142
1143        }
1144
1145        if (isSubtitle) {
1146            mFetchSubtitleDataGeneration++;
1147        } else {
1148            mFetchTimedTextDataGeneration++;
1149        }
1150
1151        status_t eosResult; // ignored
1152        if (mSubtitleTrack.mSource != NULL
1153                && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
1154            sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, this);
1155            msg->setInt64("timeUs", timeUs);
1156            msg->setInt32("generation", mFetchSubtitleDataGeneration);
1157            msg->post();
1158        }
1159
1160        sp<AMessage> msg2 = new AMessage(kWhatSendGlobalTimedTextData, this);
1161        msg2->setInt32("generation", mFetchTimedTextDataGeneration);
1162        msg2->post();
1163
1164        if (mTimedTextTrack.mSource != NULL
1165                && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
1166            sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, this);
1167            msg->setInt64("timeUs", timeUs);
1168            msg->setInt32("generation", mFetchTimedTextDataGeneration);
1169            msg->post();
1170        }
1171
1172        return OK;
1173    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
1174        bool audio = !strncasecmp(mime, "audio/", 6);
1175        Track *track = audio ? &mAudioTrack : &mVideoTrack;
1176        if (track->mSource != NULL && track->mIndex == trackIndex) {
1177            return OK;
1178        }
1179
1180        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, this);
1181        msg->setInt32("trackIndex", trackIndex);
1182        msg->post();
1183        return OK;
1184    }
1185
1186    return INVALID_OPERATION;
1187}
1188
1189status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs, bool precise) {
1190    sp<AMessage> msg = new AMessage(kWhatSeek, this);
1191    msg->setInt64("seekTimeUs", seekTimeUs);
1192    msg->setInt32("precise", precise);
1193
1194    sp<AMessage> response;
1195    status_t err = msg->postAndAwaitResponse(&response);
1196    if (err == OK && response != NULL) {
1197        CHECK(response->findInt32("err", &err));
1198    }
1199
1200    return err;
1201}
1202
1203void NuPlayer::GenericSource::onSeek(const sp<AMessage>& msg) {
1204    int64_t seekTimeUs;
1205    int32_t precise;
1206    CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1207    CHECK(msg->findInt32("precise", &precise));
1208
1209    sp<AMessage> response = new AMessage;
1210    status_t err = doSeek(seekTimeUs, precise);
1211    response->setInt32("err", err);
1212
1213    sp<AReplyToken> replyID;
1214    CHECK(msg->senderAwaitsResponse(&replyID));
1215    response->postReply(replyID);
1216}
1217
1218status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs, bool precise) {
1219    mBufferingMonitor->updateDequeuedBufferTime(-1ll);
1220
1221    // If the Widevine source is stopped, do not attempt to read any
1222    // more buffers.
1223    if (mStopRead) {
1224        return INVALID_OPERATION;
1225    }
1226    if (mVideoTrack.mSource != NULL) {
1227        int64_t actualTimeUs;
1228        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, precise, &actualTimeUs);
1229
1230        if (!precise) {
1231            seekTimeUs = actualTimeUs;
1232        }
1233        mVideoLastDequeueTimeUs = actualTimeUs;
1234    }
1235
1236    if (mAudioTrack.mSource != NULL) {
1237        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
1238        mAudioLastDequeueTimeUs = seekTimeUs;
1239    }
1240
1241    setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
1242    if (!mStarted) {
1243        setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
1244    }
1245
1246    // If currently buffering, post kWhatBufferingEnd first, so that
1247    // NuPlayer resumes. Otherwise, if cache hits high watermark
1248    // before new polling happens, no one will resume the playback.
1249    mBufferingMonitor->stopBufferingIfNecessary();
1250    mBufferingMonitor->restartPollBuffering();
1251
1252    return OK;
1253}
1254
1255sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
1256        MediaBuffer* mb,
1257        media_track_type trackType) {
1258    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
1259    size_t outLength = mb->range_length();
1260
1261    if (audio && mAudioIsVorbis) {
1262        outLength += sizeof(int32_t);
1263    }
1264
1265    sp<ABuffer> ab;
1266    if (mIsSecure && !audio) {
1267        // data is already provided in the buffer
1268        ab = new ABuffer(NULL, mb->range_length());
1269        mb->add_ref();
1270        ab->setMediaBufferBase(mb);
1271    } else {
1272        ab = new ABuffer(outLength);
1273        memcpy(ab->data(),
1274               (const uint8_t *)mb->data() + mb->range_offset(),
1275               mb->range_length());
1276    }
1277
1278    if (audio && mAudioIsVorbis) {
1279        int32_t numPageSamples;
1280        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
1281            numPageSamples = -1;
1282        }
1283
1284        uint8_t* abEnd = ab->data() + mb->range_length();
1285        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
1286    }
1287
1288    sp<AMessage> meta = ab->meta();
1289
1290    int64_t timeUs;
1291    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
1292    meta->setInt64("timeUs", timeUs);
1293
1294    if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1295        int32_t layerId;
1296        if (mb->meta_data()->findInt32(kKeyTemporalLayerId, &layerId)) {
1297            meta->setInt32("temporal-layer-id", layerId);
1298        }
1299    }
1300
1301    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
1302        const char *mime;
1303        CHECK(mTimedTextTrack.mSource != NULL
1304                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
1305        meta->setString("mime", mime);
1306    }
1307
1308    int64_t durationUs;
1309    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
1310        meta->setInt64("durationUs", durationUs);
1311    }
1312
1313    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
1314        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
1315    }
1316
1317    uint32_t dataType; // unused
1318    const void *seiData;
1319    size_t seiLength;
1320    if (mb->meta_data()->findData(kKeySEI, &dataType, &seiData, &seiLength)) {
1321        sp<ABuffer> sei = ABuffer::CreateAsCopy(seiData, seiLength);;
1322        meta->setBuffer("sei", sei);
1323    }
1324
1325    const void *mpegUserDataPointer;
1326    size_t mpegUserDataLength;
1327    if (mb->meta_data()->findData(
1328            kKeyMpegUserData, &dataType, &mpegUserDataPointer, &mpegUserDataLength)) {
1329        sp<ABuffer> mpegUserData = ABuffer::CreateAsCopy(mpegUserDataPointer, mpegUserDataLength);
1330        meta->setBuffer("mpegUserData", mpegUserData);
1331    }
1332
1333    mb->release();
1334    mb = NULL;
1335
1336    return ab;
1337}
1338
1339void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
1340    Mutex::Autolock _l(mReadBufferLock);
1341
1342    if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
1343        mPendingReadBufferTypes |= (1 << trackType);
1344        sp<AMessage> msg = new AMessage(kWhatReadBuffer, this);
1345        msg->setInt32("trackType", trackType);
1346        msg->post();
1347    }
1348}
1349
1350void NuPlayer::GenericSource::onReadBuffer(const sp<AMessage>& msg) {
1351    int32_t tmpType;
1352    CHECK(msg->findInt32("trackType", &tmpType));
1353    media_track_type trackType = (media_track_type)tmpType;
1354    readBuffer(trackType);
1355    {
1356        // only protect the variable change, as readBuffer may
1357        // take considerable time.
1358        Mutex::Autolock _l(mReadBufferLock);
1359        mPendingReadBufferTypes &= ~(1 << trackType);
1360    }
1361}
1362
1363void NuPlayer::GenericSource::readBuffer(
1364        media_track_type trackType, int64_t seekTimeUs, bool precise,
1365        int64_t *actualTimeUs, bool formatChange) {
1366    // Do not read data if Widevine source is stopped
1367    if (mStopRead) {
1368        return;
1369    }
1370    Track *track;
1371    size_t maxBuffers = 1;
1372    switch (trackType) {
1373        case MEDIA_TRACK_TYPE_VIDEO:
1374            track = &mVideoTrack;
1375            if (mIsWidevine) {
1376                maxBuffers = 2;
1377            } else {
1378                maxBuffers = 8;  // too large of a number may influence seeks
1379            }
1380            break;
1381        case MEDIA_TRACK_TYPE_AUDIO:
1382            track = &mAudioTrack;
1383            if (mIsWidevine) {
1384                maxBuffers = 8;
1385            } else {
1386                maxBuffers = 64;
1387            }
1388            break;
1389        case MEDIA_TRACK_TYPE_SUBTITLE:
1390            track = &mSubtitleTrack;
1391            break;
1392        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1393            track = &mTimedTextTrack;
1394            break;
1395        default:
1396            TRESPASS();
1397    }
1398
1399    if (track->mSource == NULL) {
1400        return;
1401    }
1402
1403    if (actualTimeUs) {
1404        *actualTimeUs = seekTimeUs;
1405    }
1406
1407    MediaSource::ReadOptions options;
1408
1409    bool seeking = false;
1410    if (seekTimeUs >= 0) {
1411        options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
1412        seeking = true;
1413    }
1414
1415    const bool couldReadMultiple = (!mIsWidevine && track->mSource->supportReadMultiple());
1416
1417    if (mIsWidevine || couldReadMultiple) {
1418        options.setNonBlocking();
1419    }
1420
1421    for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
1422        Vector<MediaBuffer *> mediaBuffers;
1423        status_t err = NO_ERROR;
1424
1425        if (couldReadMultiple) {
1426            err = track->mSource->readMultiple(
1427                    &mediaBuffers, maxBuffers - numBuffers, &options);
1428        } else {
1429            MediaBuffer *mbuf = NULL;
1430            err = track->mSource->read(&mbuf, &options);
1431            if (err == OK && mbuf != NULL) {
1432                mediaBuffers.push_back(mbuf);
1433            }
1434        }
1435
1436        options.clearNonPersistent();
1437
1438        size_t id = 0;
1439        size_t count = mediaBuffers.size();
1440        for (; id < count; ++id) {
1441            int64_t timeUs;
1442            MediaBuffer *mbuf = mediaBuffers[id];
1443            if (!mbuf->meta_data()->findInt64(kKeyTime, &timeUs)) {
1444                mbuf->meta_data()->dumpToLog();
1445                track->mPackets->signalEOS(ERROR_MALFORMED);
1446                break;
1447            }
1448            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1449                mAudioTimeUs = timeUs;
1450                mBufferingMonitor->updateQueuedTime(true /* isAudio */, timeUs);
1451            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1452                mVideoTimeUs = timeUs;
1453                mBufferingMonitor->updateQueuedTime(false /* isAudio */, timeUs);
1454            }
1455
1456            queueDiscontinuityIfNeeded(seeking, formatChange, trackType, track);
1457
1458            sp<ABuffer> buffer = mediaBufferToABuffer(mbuf, trackType);
1459            if (numBuffers == 0 && actualTimeUs != nullptr) {
1460                *actualTimeUs = timeUs;
1461            }
1462            if (seeking && buffer != nullptr) {
1463                sp<AMessage> meta = buffer->meta();
1464                if (meta != nullptr && precise && seekTimeUs > timeUs) {
1465                    sp<AMessage> extra = new AMessage;
1466                    extra->setInt64("resume-at-mediaTimeUs", seekTimeUs);
1467                    meta->setMessage("extra", extra);
1468                }
1469            }
1470
1471            track->mPackets->queueAccessUnit(buffer);
1472            formatChange = false;
1473            seeking = false;
1474            ++numBuffers;
1475        }
1476        if (id < count) {
1477            // Error, some mediaBuffer doesn't have kKeyTime.
1478            for (; id < count; ++id) {
1479                mediaBuffers[id]->release();
1480            }
1481            break;
1482        }
1483
1484        if (err == WOULD_BLOCK) {
1485            break;
1486        } else if (err == INFO_FORMAT_CHANGED) {
1487#if 0
1488            track->mPackets->queueDiscontinuity(
1489                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1490                    NULL,
1491                    false /* discard */);
1492#endif
1493        } else if (err != OK) {
1494            queueDiscontinuityIfNeeded(seeking, formatChange, trackType, track);
1495            track->mPackets->signalEOS(err);
1496            break;
1497        }
1498    }
1499}
1500
1501void NuPlayer::GenericSource::queueDiscontinuityIfNeeded(
1502        bool seeking, bool formatChange, media_track_type trackType, Track *track) {
1503    // formatChange && seeking: track whose source is changed during selection
1504    // formatChange && !seeking: track whose source is not changed during selection
1505    // !formatChange: normal seek
1506    if ((seeking || formatChange)
1507            && (trackType == MEDIA_TRACK_TYPE_AUDIO
1508            || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1509        ATSParser::DiscontinuityType type = (formatChange && seeking)
1510                ? ATSParser::DISCONTINUITY_FORMATCHANGE
1511                : ATSParser::DISCONTINUITY_NONE;
1512        track->mPackets->queueDiscontinuity(type, NULL /* extra */, true /* discard */);
1513    }
1514}
1515
1516NuPlayer::GenericSource::BufferingMonitor::BufferingMonitor(const sp<AMessage> &notify)
1517    : mNotify(notify),
1518      mDurationUs(-1ll),
1519      mBitrate(-1ll),
1520      mIsStreaming(false),
1521      mAudioTimeUs(0),
1522      mVideoTimeUs(0),
1523      mPollBufferingGeneration(0),
1524      mPrepareBuffering(false),
1525      mBuffering(false),
1526      mPrevBufferPercentage(-1),
1527      mOffloadAudio(false),
1528      mFirstDequeuedBufferRealUs(-1ll),
1529      mFirstDequeuedBufferMediaUs(-1ll),
1530      mlastDequeuedBufferMediaUs(-1ll) {
1531}
1532
1533NuPlayer::GenericSource::BufferingMonitor::~BufferingMonitor() {
1534}
1535
1536void NuPlayer::GenericSource::BufferingMonitor::prepare(
1537        const sp<NuCachedSource2> &cachedSource,
1538        const sp<WVMExtractor> &wvmExtractor,
1539        int64_t durationUs,
1540        int64_t bitrate,
1541        bool isStreaming) {
1542    Mutex::Autolock _l(mLock);
1543    prepare_l(cachedSource, wvmExtractor, durationUs, bitrate, isStreaming);
1544}
1545
1546void NuPlayer::GenericSource::BufferingMonitor::stop() {
1547    Mutex::Autolock _l(mLock);
1548    prepare_l(NULL /* cachedSource */, NULL /* wvmExtractor */, -1 /* durationUs */,
1549            -1 /* bitrate */, false /* isStreaming */);
1550}
1551
1552void NuPlayer::GenericSource::BufferingMonitor::cancelPollBuffering() {
1553    Mutex::Autolock _l(mLock);
1554    cancelPollBuffering_l();
1555}
1556
1557void NuPlayer::GenericSource::BufferingMonitor::restartPollBuffering() {
1558    Mutex::Autolock _l(mLock);
1559    if (mIsStreaming) {
1560        cancelPollBuffering_l();
1561        onPollBuffering_l();
1562    }
1563}
1564
1565void NuPlayer::GenericSource::BufferingMonitor::stopBufferingIfNecessary() {
1566    Mutex::Autolock _l(mLock);
1567    stopBufferingIfNecessary_l();
1568}
1569
1570void NuPlayer::GenericSource::BufferingMonitor::ensureCacheIsFetching() {
1571    Mutex::Autolock _l(mLock);
1572    ensureCacheIsFetching_l();
1573}
1574
1575void NuPlayer::GenericSource::BufferingMonitor::updateQueuedTime(bool isAudio, int64_t timeUs) {
1576    Mutex::Autolock _l(mLock);
1577    if (isAudio) {
1578        mAudioTimeUs = timeUs;
1579    } else {
1580        mVideoTimeUs = timeUs;
1581    }
1582}
1583
1584void NuPlayer::GenericSource::BufferingMonitor::setOffloadAudio(bool offload) {
1585    Mutex::Autolock _l(mLock);
1586    mOffloadAudio = offload;
1587}
1588
1589void NuPlayer::GenericSource::BufferingMonitor::updateDequeuedBufferTime(int64_t mediaUs) {
1590    Mutex::Autolock _l(mLock);
1591    if (mediaUs < 0) {
1592        mFirstDequeuedBufferRealUs = -1ll;
1593        mFirstDequeuedBufferMediaUs = -1ll;
1594    } else if (mFirstDequeuedBufferRealUs < 0) {
1595        mFirstDequeuedBufferRealUs = ALooper::GetNowUs();
1596        mFirstDequeuedBufferMediaUs = mediaUs;
1597    }
1598    mlastDequeuedBufferMediaUs = mediaUs;
1599}
1600
1601void NuPlayer::GenericSource::BufferingMonitor::prepare_l(
1602        const sp<NuCachedSource2> &cachedSource,
1603        const sp<WVMExtractor> &wvmExtractor,
1604        int64_t durationUs,
1605        int64_t bitrate,
1606        bool isStreaming) {
1607    ALOGW_IF(wvmExtractor != NULL && cachedSource != NULL,
1608            "WVMExtractor and NuCachedSource are both present when "
1609            "BufferingMonitor::prepare_l is called, ignore NuCachedSource");
1610
1611    mCachedSource = cachedSource;
1612    mWVMExtractor = wvmExtractor;
1613    mDurationUs = durationUs;
1614    mBitrate = bitrate;
1615    mIsStreaming = isStreaming;
1616    mAudioTimeUs = 0;
1617    mVideoTimeUs = 0;
1618    mPrepareBuffering = (cachedSource != NULL || wvmExtractor != NULL);
1619    cancelPollBuffering_l();
1620    mOffloadAudio = false;
1621    mFirstDequeuedBufferRealUs = -1ll;
1622    mFirstDequeuedBufferMediaUs = -1ll;
1623    mlastDequeuedBufferMediaUs = -1ll;
1624}
1625
1626void NuPlayer::GenericSource::BufferingMonitor::cancelPollBuffering_l() {
1627    mBuffering = false;
1628    ++mPollBufferingGeneration;
1629    mPrevBufferPercentage = -1;
1630}
1631
1632void NuPlayer::GenericSource::BufferingMonitor::notifyBufferingUpdate_l(int32_t percentage) {
1633    // Buffering percent could go backward as it's estimated from remaining
1634    // data and last access time. This could cause the buffering position
1635    // drawn on media control to jitter slightly. Remember previously reported
1636    // percentage and don't allow it to go backward.
1637    if (percentage < mPrevBufferPercentage) {
1638        percentage = mPrevBufferPercentage;
1639    } else if (percentage > 100) {
1640        percentage = 100;
1641    }
1642
1643    mPrevBufferPercentage = percentage;
1644
1645    ALOGV("notifyBufferingUpdate_l: buffering %d%%", percentage);
1646
1647    sp<AMessage> msg = mNotify->dup();
1648    msg->setInt32("what", kWhatBufferingUpdate);
1649    msg->setInt32("percentage", percentage);
1650    msg->post();
1651}
1652
1653void NuPlayer::GenericSource::BufferingMonitor::startBufferingIfNecessary_l() {
1654    if (mPrepareBuffering) {
1655        return;
1656    }
1657
1658    if (!mBuffering) {
1659        ALOGD("startBufferingIfNecessary_l");
1660
1661        mBuffering = true;
1662
1663        ensureCacheIsFetching_l();
1664        sendCacheStats_l();
1665
1666        sp<AMessage> notify = mNotify->dup();
1667        notify->setInt32("what", kWhatPauseOnBufferingStart);
1668        notify->post();
1669    }
1670}
1671
1672void NuPlayer::GenericSource::BufferingMonitor::stopBufferingIfNecessary_l() {
1673    if (mPrepareBuffering) {
1674        ALOGD("stopBufferingIfNecessary_l, mBuffering=%d", mBuffering);
1675
1676        mPrepareBuffering = false;
1677
1678        sp<AMessage> notify = mNotify->dup();
1679        notify->setInt32("what", kWhatPrepared);
1680        notify->setInt32("err", OK);
1681        notify->post();
1682
1683        return;
1684    }
1685
1686    if (mBuffering) {
1687        ALOGD("stopBufferingIfNecessary_l");
1688        mBuffering = false;
1689
1690        sendCacheStats_l();
1691
1692        sp<AMessage> notify = mNotify->dup();
1693        notify->setInt32("what", kWhatResumeOnBufferingEnd);
1694        notify->post();
1695    }
1696}
1697
1698void NuPlayer::GenericSource::BufferingMonitor::sendCacheStats_l() {
1699    int32_t kbps = 0;
1700    status_t err = UNKNOWN_ERROR;
1701
1702    if (mWVMExtractor != NULL) {
1703        err = mWVMExtractor->getEstimatedBandwidthKbps(&kbps);
1704    } else if (mCachedSource != NULL) {
1705        err = mCachedSource->getEstimatedBandwidthKbps(&kbps);
1706    }
1707
1708    if (err == OK) {
1709        sp<AMessage> notify = mNotify->dup();
1710        notify->setInt32("what", kWhatCacheStats);
1711        notify->setInt32("bandwidth", kbps);
1712        notify->post();
1713    }
1714}
1715
1716void NuPlayer::GenericSource::BufferingMonitor::ensureCacheIsFetching_l() {
1717    if (mCachedSource != NULL) {
1718        mCachedSource->resumeFetchingIfNecessary();
1719    }
1720}
1721
1722void NuPlayer::GenericSource::BufferingMonitor::schedulePollBuffering_l() {
1723    sp<AMessage> msg = new AMessage(kWhatPollBuffering, this);
1724    msg->setInt32("generation", mPollBufferingGeneration);
1725    // Enquires buffering status every second.
1726    msg->post(1000000ll);
1727}
1728
1729int64_t NuPlayer::GenericSource::BufferingMonitor::getLastReadPosition_l() {
1730    if (mAudioTimeUs > 0) {
1731        return mAudioTimeUs;
1732    } else if (mVideoTimeUs > 0) {
1733        return mVideoTimeUs;
1734    } else {
1735        return 0;
1736    }
1737}
1738
1739void NuPlayer::GenericSource::BufferingMonitor::onPollBuffering_l() {
1740    status_t finalStatus = UNKNOWN_ERROR;
1741    int64_t cachedDurationUs = -1ll;
1742    ssize_t cachedDataRemaining = -1;
1743
1744    if (mWVMExtractor != NULL) {
1745        cachedDurationUs =
1746                mWVMExtractor->getCachedDurationUs(&finalStatus);
1747    } else if (mCachedSource != NULL) {
1748        cachedDataRemaining =
1749                mCachedSource->approxDataRemaining(&finalStatus);
1750
1751        if (finalStatus == OK) {
1752            off64_t size;
1753            int64_t bitrate = 0ll;
1754            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
1755                // |bitrate| uses bits/second unit, while size is number of bytes.
1756                bitrate = size * 8000000ll / mDurationUs;
1757            } else if (mBitrate > 0) {
1758                bitrate = mBitrate;
1759            }
1760            if (bitrate > 0) {
1761                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
1762            }
1763        }
1764    }
1765
1766    if (finalStatus != OK) {
1767        ALOGV("onPollBuffering_l: EOS (finalStatus = %d)", finalStatus);
1768
1769        if (finalStatus == ERROR_END_OF_STREAM) {
1770            notifyBufferingUpdate_l(100);
1771        }
1772
1773        stopBufferingIfNecessary_l();
1774        return;
1775    } else if (cachedDurationUs >= 0ll) {
1776        if (mDurationUs > 0ll) {
1777            int64_t cachedPosUs = getLastReadPosition_l() + cachedDurationUs;
1778            int percentage = 100.0 * cachedPosUs / mDurationUs;
1779            if (percentage > 100) {
1780                percentage = 100;
1781            }
1782
1783            notifyBufferingUpdate_l(percentage);
1784        }
1785
1786        ALOGV("onPollBuffering_l: cachedDurationUs %.1f sec",
1787                cachedDurationUs / 1000000.0f);
1788
1789        if (cachedDurationUs < kLowWaterMarkUs) {
1790            // Take into account the data cached in downstream components to try to avoid
1791            // unnecessary pause.
1792            if (mOffloadAudio && mFirstDequeuedBufferRealUs >= 0) {
1793                int64_t downStreamCacheUs = mlastDequeuedBufferMediaUs - mFirstDequeuedBufferMediaUs
1794                        - (ALooper::GetNowUs() - mFirstDequeuedBufferRealUs);
1795                if (downStreamCacheUs > 0) {
1796                    cachedDurationUs += downStreamCacheUs;
1797                }
1798            }
1799
1800            if (cachedDurationUs < kLowWaterMarkUs) {
1801                startBufferingIfNecessary_l();
1802            }
1803        } else {
1804            int64_t highWaterMark = mPrepareBuffering ? kHighWaterMarkUs : kHighWaterMarkRebufferUs;
1805            if (cachedDurationUs > highWaterMark) {
1806                stopBufferingIfNecessary_l();
1807            }
1808        }
1809    } else if (cachedDataRemaining >= 0) {
1810        ALOGV("onPollBuffering_l: cachedDataRemaining %zd bytes",
1811                cachedDataRemaining);
1812
1813        if (cachedDataRemaining < kLowWaterMarkBytes) {
1814            startBufferingIfNecessary_l();
1815        } else if (cachedDataRemaining > kHighWaterMarkBytes) {
1816            stopBufferingIfNecessary_l();
1817        }
1818    }
1819
1820    schedulePollBuffering_l();
1821}
1822
1823void NuPlayer::GenericSource::BufferingMonitor::onMessageReceived(const sp<AMessage> &msg) {
1824    switch (msg->what()) {
1825      case kWhatPollBuffering:
1826      {
1827          int32_t generation;
1828          CHECK(msg->findInt32("generation", &generation));
1829          Mutex::Autolock _l(mLock);
1830          if (generation == mPollBufferingGeneration) {
1831              onPollBuffering_l();
1832          }
1833          break;
1834      }
1835      default:
1836          TRESPASS();
1837          break;
1838    }
1839}
1840
1841}  // namespace android
1842