GenericSource.cpp revision 661a5270303392bbf22eaa459961e6ab7b26b529 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17//#define LOG_NDEBUG 0
18#define LOG_TAG "GenericSource"
19
20#include "GenericSource.h"
21
22#include "AnotherPacketSource.h"
23
24#include <media/IMediaHTTPService.h>
25#include <media/stagefright/foundation/ABuffer.h>
26#include <media/stagefright/foundation/ADebug.h>
27#include <media/stagefright/foundation/AMessage.h>
28#include <media/stagefright/DataSource.h>
29#include <media/stagefright/FileSource.h>
30#include <media/stagefright/MediaBuffer.h>
31#include <media/stagefright/MediaDefs.h>
32#include <media/stagefright/MediaExtractor.h>
33#include <media/stagefright/MediaSource.h>
34#include <media/stagefright/MetaData.h>
35#include <media/stagefright/Utils.h>
36#include "../../libstagefright/include/DRMExtractor.h"
37#include "../../libstagefright/include/NuCachedSource2.h"
38#include "../../libstagefright/include/WVMExtractor.h"
39#include "../../libstagefright/include/HTTPBase.h"
40
41namespace android {
42
43NuPlayer::GenericSource::GenericSource(
44        const sp<AMessage> &notify,
45        bool uidValid,
46        uid_t uid)
47    : Source(notify),
48      mAudioTimeUs(0),
49      mAudioLastDequeueTimeUs(0),
50      mVideoTimeUs(0),
51      mVideoLastDequeueTimeUs(0),
52      mFetchSubtitleDataGeneration(0),
53      mFetchTimedTextDataGeneration(0),
54      mDurationUs(0ll),
55      mAudioIsVorbis(false),
56      mIsWidevine(false),
57      mIsSecure(false),
58      mUIDValid(uidValid),
59      mUID(uid),
60      mFd(-1),
61      mDrmManagerClient(NULL),
62      mMetaDataSize(-1ll),
63      mBitrate(-1ll),
64      mPollBufferingGeneration(0),
65      mPendingReadBufferTypes(0) {
66    resetDataSource();
67    DataSource::RegisterDefaultSniffers();
68}
69
70void NuPlayer::GenericSource::resetDataSource() {
71    mHTTPService.clear();
72    mHttpSource.clear();
73    mUri.clear();
74    mUriHeaders.clear();
75    if (mFd >= 0) {
76        close(mFd);
77        mFd = -1;
78    }
79    mOffset = 0;
80    mLength = 0;
81    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
82    mDecryptHandle = NULL;
83    mDrmManagerClient = NULL;
84    mStarted = false;
85    mStopRead = true;
86}
87
88status_t NuPlayer::GenericSource::setDataSource(
89        const sp<IMediaHTTPService> &httpService,
90        const char *url,
91        const KeyedVector<String8, String8> *headers) {
92    resetDataSource();
93
94    mHTTPService = httpService;
95    mUri = url;
96
97    if (headers) {
98        mUriHeaders = *headers;
99    }
100
101    // delay data source creation to prepareAsync() to avoid blocking
102    // the calling thread in setDataSource for any significant time.
103    return OK;
104}
105
106status_t NuPlayer::GenericSource::setDataSource(
107        int fd, int64_t offset, int64_t length) {
108    resetDataSource();
109
110    mFd = dup(fd);
111    mOffset = offset;
112    mLength = length;
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
119sp<MetaData> NuPlayer::GenericSource::getFileFormatMeta() const {
120    return mFileMeta;
121}
122
123status_t NuPlayer::GenericSource::initFromDataSource() {
124    sp<MediaExtractor> extractor;
125
126    CHECK(mDataSource != NULL);
127
128    if (mIsWidevine) {
129        String8 mimeType;
130        float confidence;
131        sp<AMessage> dummy;
132        bool success;
133
134        success = SniffWVM(mDataSource, &mimeType, &confidence, &dummy);
135        if (!success
136                || strcasecmp(
137                    mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM)) {
138            ALOGE("unsupported widevine mime: %s", mimeType.string());
139            return UNKNOWN_ERROR;
140        }
141
142        mWVMExtractor = new WVMExtractor(mDataSource);
143        mWVMExtractor->setAdaptiveStreamingMode(true);
144        if (mUIDValid) {
145            mWVMExtractor->setUID(mUID);
146        }
147        extractor = mWVMExtractor;
148    } else {
149        extractor = MediaExtractor::Create(mDataSource,
150                mSniffedMIME.empty() ? NULL: mSniffedMIME.c_str());
151    }
152
153    if (extractor == NULL) {
154        return UNKNOWN_ERROR;
155    }
156
157    if (extractor->getDrmFlag()) {
158        checkDrmStatus(mDataSource);
159    }
160
161    mFileMeta = extractor->getMetaData();
162    if (mFileMeta != NULL) {
163        int64_t duration;
164        if (mFileMeta->findInt64(kKeyDuration, &duration)) {
165            mDurationUs = duration;
166        }
167
168        if (!mIsWidevine) {
169            // Check mime to see if we actually have a widevine source.
170            // If the data source is not URL-type (eg. file source), we
171            // won't be able to tell until now.
172            const char *fileMime;
173            if (mFileMeta->findCString(kKeyMIMEType, &fileMime)
174                    && !strncasecmp(fileMime, "video/wvm", 9)) {
175                mIsWidevine = true;
176                if (!mUri.empty()) {
177                  // streaming, but the app forgot to specify widevine:// url
178                  mWVMExtractor = static_cast<WVMExtractor *>(extractor.get());
179                  mWVMExtractor->setAdaptiveStreamingMode(true);
180                  if (mUIDValid) {
181                    mWVMExtractor->setUID(mUID);
182                  }
183                }
184            }
185        }
186    }
187
188    int32_t totalBitrate = 0;
189
190    size_t numtracks = extractor->countTracks();
191    if (numtracks == 0) {
192        return UNKNOWN_ERROR;
193    }
194
195    for (size_t i = 0; i < numtracks; ++i) {
196        sp<MediaSource> track = extractor->getTrack(i);
197
198        sp<MetaData> meta = extractor->getTrackMetaData(i);
199
200        const char *mime;
201        CHECK(meta->findCString(kKeyMIMEType, &mime));
202
203        // Do the string compare immediately with "mime",
204        // we can't assume "mime" would stay valid after another
205        // extractor operation, some extractors might modify meta
206        // during getTrack() and make it invalid.
207        if (!strncasecmp(mime, "audio/", 6)) {
208            if (mAudioTrack.mSource == NULL) {
209                mAudioTrack.mIndex = i;
210                mAudioTrack.mSource = track;
211                mAudioTrack.mPackets =
212                    new AnotherPacketSource(mAudioTrack.mSource->getFormat());
213
214                if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) {
215                    mAudioIsVorbis = true;
216                } else {
217                    mAudioIsVorbis = false;
218                }
219            }
220        } else if (!strncasecmp(mime, "video/", 6)) {
221            if (mVideoTrack.mSource == NULL) {
222                mVideoTrack.mIndex = i;
223                mVideoTrack.mSource = track;
224                mVideoTrack.mPackets =
225                    new AnotherPacketSource(mVideoTrack.mSource->getFormat());
226
227                // check if the source requires secure buffers
228                int32_t secure;
229                if (meta->findInt32(kKeyRequiresSecureBuffers, &secure)
230                        && secure) {
231                    mIsSecure = true;
232                    if (mUIDValid) {
233                        extractor->setUID(mUID);
234                    }
235                }
236            }
237        }
238
239        if (track != NULL) {
240            mSources.push(track);
241            int64_t durationUs;
242            if (meta->findInt64(kKeyDuration, &durationUs)) {
243                if (durationUs > mDurationUs) {
244                    mDurationUs = durationUs;
245                }
246            }
247
248            int32_t bitrate;
249            if (totalBitrate >= 0 && meta->findInt32(kKeyBitRate, &bitrate)) {
250                totalBitrate += bitrate;
251            } else {
252                totalBitrate = -1;
253            }
254        }
255    }
256
257    mBitrate = totalBitrate;
258
259    return OK;
260}
261
262void NuPlayer::GenericSource::checkDrmStatus(const sp<DataSource>& dataSource) {
263    dataSource->getDrmInfo(mDecryptHandle, &mDrmManagerClient);
264    if (mDecryptHandle != NULL) {
265        CHECK(mDrmManagerClient);
266        if (RightsStatus::RIGHTS_VALID != mDecryptHandle->status) {
267            sp<AMessage> msg = dupNotify();
268            msg->setInt32("what", kWhatDrmNoLicense);
269            msg->post();
270        }
271    }
272}
273
274int64_t NuPlayer::GenericSource::getLastReadPosition() {
275    if (mAudioTrack.mSource != NULL) {
276        return mAudioTimeUs;
277    } else if (mVideoTrack.mSource != NULL) {
278        return mVideoTimeUs;
279    } else {
280        return 0;
281    }
282}
283
284status_t NuPlayer::GenericSource::setBuffers(
285        bool audio, Vector<MediaBuffer *> &buffers) {
286    if (mIsSecure && !audio) {
287        return mVideoTrack.mSource->setBuffers(buffers);
288    }
289    return INVALID_OPERATION;
290}
291
292NuPlayer::GenericSource::~GenericSource() {
293    if (mLooper != NULL) {
294        mLooper->unregisterHandler(id());
295        mLooper->stop();
296    }
297    resetDataSource();
298}
299
300void NuPlayer::GenericSource::prepareAsync() {
301    if (mLooper == NULL) {
302        mLooper = new ALooper;
303        mLooper->setName("generic");
304        mLooper->start();
305
306        mLooper->registerHandler(this);
307    }
308
309    sp<AMessage> msg = new AMessage(kWhatPrepareAsync, id());
310    msg->post();
311}
312
313void NuPlayer::GenericSource::onPrepareAsync() {
314    // delayed data source creation
315    if (mDataSource == NULL) {
316        // set to false first, if the extractor
317        // comes back as secure, set it to true then.
318        mIsSecure = false;
319
320        if (!mUri.empty()) {
321            const char* uri = mUri.c_str();
322            mIsWidevine = !strncasecmp(uri, "widevine://", 11);
323
324            if (!strncasecmp("http://", uri, 7)
325                    || !strncasecmp("https://", uri, 8)
326                    || mIsWidevine) {
327                mHttpSource = DataSource::CreateMediaHTTP(mHTTPService);
328                if (mHttpSource == NULL) {
329                    ALOGE("Failed to create http source!");
330                    notifyPreparedAndCleanup(UNKNOWN_ERROR);
331                    return;
332                }
333            }
334
335            mDataSource = DataSource::CreateFromURI(
336                   mHTTPService, uri, &mUriHeaders, &mContentType,
337                   static_cast<HTTPBase *>(mHttpSource.get()));
338        } else {
339            mIsWidevine = false;
340
341            mDataSource = new FileSource(mFd, mOffset, mLength);
342            mFd = -1;
343        }
344
345        if (mDataSource == NULL) {
346            ALOGE("Failed to create data source!");
347            notifyPreparedAndCleanup(UNKNOWN_ERROR);
348            return;
349        }
350
351        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
352            mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get());
353        }
354
355        if (mIsWidevine || mCachedSource != NULL) {
356            schedulePollBuffering();
357        }
358    }
359
360    // check initial caching status
361    status_t err = prefillCacheIfNecessary();
362    if (err != OK) {
363        if (err == -EAGAIN) {
364            (new AMessage(kWhatPrepareAsync, id()))->post(200000);
365        } else {
366            ALOGE("Failed to prefill data cache!");
367            notifyPreparedAndCleanup(UNKNOWN_ERROR);
368        }
369        return;
370    }
371
372    // init extrator from data source
373    err = initFromDataSource();
374
375    if (err != OK) {
376        ALOGE("Failed to init from data source!");
377        notifyPreparedAndCleanup(err);
378        return;
379    }
380
381    if (mVideoTrack.mSource != NULL) {
382        sp<MetaData> meta = doGetFormatMeta(false /* audio */);
383        sp<AMessage> msg = new AMessage;
384        err = convertMetaDataToMessage(meta, &msg);
385        if(err != OK) {
386            notifyPreparedAndCleanup(err);
387            return;
388        }
389        notifyVideoSizeChanged(msg);
390    }
391
392    notifyFlagsChanged(
393            (mIsSecure ? FLAG_SECURE : 0)
394            | FLAG_CAN_PAUSE
395            | FLAG_CAN_SEEK_BACKWARD
396            | FLAG_CAN_SEEK_FORWARD
397            | FLAG_CAN_SEEK);
398
399    notifyPrepared();
400}
401
402void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
403    if (err != OK) {
404        mMetaDataSize = -1ll;
405        mContentType = "";
406        mSniffedMIME = "";
407        mDataSource.clear();
408        mCachedSource.clear();
409        mHttpSource.clear();
410
411        cancelPollBuffering();
412    }
413    notifyPrepared(err);
414}
415
416status_t NuPlayer::GenericSource::prefillCacheIfNecessary() {
417    CHECK(mDataSource != NULL);
418
419    if (mCachedSource == NULL) {
420        // no prefill if the data source is not cached
421        return OK;
422    }
423
424    // We're not doing this for streams that appear to be audio-only
425    // streams to ensure that even low bandwidth streams start
426    // playing back fairly instantly.
427    if (!strncasecmp(mContentType.string(), "audio/", 6)) {
428        return OK;
429    }
430
431    // We're going to prefill the cache before trying to instantiate
432    // the extractor below, as the latter is an operation that otherwise
433    // could block on the datasource for a significant amount of time.
434    // During that time we'd be unable to abort the preparation phase
435    // without this prefill.
436
437    // Initially make sure we have at least 192 KB for the sniff
438    // to complete without blocking.
439    static const size_t kMinBytesForSniffing = 192 * 1024;
440    static const size_t kDefaultMetaSize = 200000;
441
442    status_t finalStatus;
443
444    size_t cachedDataRemaining =
445            mCachedSource->approxDataRemaining(&finalStatus);
446
447    if (finalStatus != OK || (mMetaDataSize >= 0
448            && (off64_t)cachedDataRemaining >= mMetaDataSize)) {
449        ALOGV("stop caching, status %d, "
450                "metaDataSize %lld, cachedDataRemaining %zu",
451                finalStatus, mMetaDataSize, cachedDataRemaining);
452        return OK;
453    }
454
455    ALOGV("now cached %zu bytes of data", cachedDataRemaining);
456
457    if (mMetaDataSize < 0
458            && cachedDataRemaining >= kMinBytesForSniffing) {
459        String8 tmp;
460        float confidence;
461        sp<AMessage> meta;
462        if (!mCachedSource->sniff(&tmp, &confidence, &meta)) {
463            return UNKNOWN_ERROR;
464        }
465
466        // We successfully identified the file's extractor to
467        // be, remember this mime type so we don't have to
468        // sniff it again when we call MediaExtractor::Create()
469        mSniffedMIME = tmp.string();
470
471        if (meta == NULL
472                || !meta->findInt64("meta-data-size",
473                        reinterpret_cast<int64_t*>(&mMetaDataSize))) {
474            mMetaDataSize = kDefaultMetaSize;
475        }
476
477        if (mMetaDataSize < 0ll) {
478            ALOGE("invalid metaDataSize = %lld bytes", mMetaDataSize);
479            return UNKNOWN_ERROR;
480        }
481    }
482
483    return -EAGAIN;
484}
485
486void NuPlayer::GenericSource::start() {
487    ALOGI("start");
488
489    mStopRead = false;
490    if (mAudioTrack.mSource != NULL) {
491        CHECK_EQ(mAudioTrack.mSource->start(), (status_t)OK);
492
493        postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
494    }
495
496    if (mVideoTrack.mSource != NULL) {
497        CHECK_EQ(mVideoTrack.mSource->start(), (status_t)OK);
498
499        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
500    }
501
502    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
503    mStarted = true;
504}
505
506void NuPlayer::GenericSource::stop() {
507    // nothing to do, just account for DRM playback status
508    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
509    mStarted = false;
510    if (mIsWidevine || mIsSecure) {
511        // For widevine or secure sources we need to prevent any further reads.
512        sp<AMessage> msg = new AMessage(kWhatStopWidevine, id());
513        sp<AMessage> response;
514        (void) msg->postAndAwaitResponse(&response);
515    }
516}
517
518void NuPlayer::GenericSource::pause() {
519    // nothing to do, just account for DRM playback status
520    setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
521    mStarted = false;
522}
523
524void NuPlayer::GenericSource::resume() {
525    // nothing to do, just account for DRM playback status
526    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
527    mStarted = true;
528}
529
530void NuPlayer::GenericSource::disconnect() {
531    if (mDataSource != NULL) {
532        // disconnect data source
533        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
534            static_cast<NuCachedSource2 *>(mDataSource.get())->disconnect();
535        }
536    } else if (mHttpSource != NULL) {
537        static_cast<HTTPBase *>(mHttpSource.get())->disconnect();
538    }
539}
540
541void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
542    if (mDecryptHandle != NULL) {
543        mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
544    }
545    mSubtitleTrack.mPackets = new AnotherPacketSource(NULL);
546    mTimedTextTrack.mPackets = new AnotherPacketSource(NULL);
547}
548
549status_t NuPlayer::GenericSource::feedMoreTSData() {
550    return OK;
551}
552
553void NuPlayer::GenericSource::schedulePollBuffering() {
554    sp<AMessage> msg = new AMessage(kWhatPollBuffering, id());
555    msg->setInt32("generation", mPollBufferingGeneration);
556    msg->post(1000000ll);
557}
558
559void NuPlayer::GenericSource::cancelPollBuffering() {
560    ++mPollBufferingGeneration;
561}
562
563void NuPlayer::GenericSource::notifyBufferingUpdate(int percentage) {
564    sp<AMessage> msg = dupNotify();
565    msg->setInt32("what", kWhatBufferingUpdate);
566    msg->setInt32("percentage", percentage);
567    msg->post();
568}
569
570void NuPlayer::GenericSource::onPollBuffering() {
571    status_t finalStatus = UNKNOWN_ERROR;
572    int64_t cachedDurationUs = 0ll;
573
574    if (mCachedSource != NULL) {
575        size_t cachedDataRemaining =
576                mCachedSource->approxDataRemaining(&finalStatus);
577
578        if (finalStatus == OK) {
579            off64_t size;
580            int64_t bitrate = 0ll;
581            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
582                bitrate = size * 8000000ll / mDurationUs;
583            } else if (mBitrate > 0) {
584                bitrate = mBitrate;
585            }
586            if (bitrate > 0) {
587                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
588            }
589        }
590    } else if (mWVMExtractor != NULL) {
591        cachedDurationUs
592            = mWVMExtractor->getCachedDurationUs(&finalStatus);
593    }
594
595    if (finalStatus == ERROR_END_OF_STREAM) {
596        notifyBufferingUpdate(100);
597        cancelPollBuffering();
598        return;
599    } else if (cachedDurationUs > 0ll && mDurationUs > 0ll) {
600        int percentage = 100.0 * cachedDurationUs / mDurationUs;
601        if (percentage > 100) {
602            percentage = 100;
603        }
604
605        notifyBufferingUpdate(percentage);
606    }
607
608    schedulePollBuffering();
609}
610
611
612void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
613    switch (msg->what()) {
614      case kWhatPrepareAsync:
615      {
616          onPrepareAsync();
617          break;
618      }
619      case kWhatFetchSubtitleData:
620      {
621          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
622                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
623          break;
624      }
625
626      case kWhatFetchTimedTextData:
627      {
628          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
629                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
630          break;
631      }
632
633      case kWhatSendSubtitleData:
634      {
635          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
636                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
637          break;
638      }
639
640      case kWhatSendTimedTextData:
641      {
642          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
643                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
644          break;
645      }
646
647      case kWhatChangeAVSource:
648      {
649          int32_t trackIndex;
650          CHECK(msg->findInt32("trackIndex", &trackIndex));
651          const sp<MediaSource> source = mSources.itemAt(trackIndex);
652
653          Track* track;
654          const char *mime;
655          media_track_type trackType, counterpartType;
656          sp<MetaData> meta = source->getFormat();
657          meta->findCString(kKeyMIMEType, &mime);
658          if (!strncasecmp(mime, "audio/", 6)) {
659              track = &mAudioTrack;
660              trackType = MEDIA_TRACK_TYPE_AUDIO;
661              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
662          } else {
663              CHECK(!strncasecmp(mime, "video/", 6));
664              track = &mVideoTrack;
665              trackType = MEDIA_TRACK_TYPE_VIDEO;
666              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
667          }
668
669
670          if (track->mSource != NULL) {
671              track->mSource->stop();
672          }
673          track->mSource = source;
674          track->mSource->start();
675          track->mIndex = trackIndex;
676
677          int64_t timeUs, actualTimeUs;
678          const bool formatChange = true;
679          if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
680              timeUs = mAudioLastDequeueTimeUs;
681          } else {
682              timeUs = mVideoLastDequeueTimeUs;
683          }
684          readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
685          readBuffer(counterpartType, -1, NULL, formatChange);
686          ALOGV("timeUs %lld actualTimeUs %lld", timeUs, actualTimeUs);
687
688          break;
689      }
690      case kWhatPollBuffering:
691      {
692          int32_t generation;
693          CHECK(msg->findInt32("generation", &generation));
694          if (generation == mPollBufferingGeneration) {
695              onPollBuffering();
696          }
697          break;
698      }
699
700      case kWhatGetFormat:
701      {
702          onGetFormatMeta(msg);
703          break;
704      }
705
706      case kWhatGetSelectedTrack:
707      {
708          onGetSelectedTrack(msg);
709          break;
710      }
711
712      case kWhatSelectTrack:
713      {
714          onSelectTrack(msg);
715          break;
716      }
717
718      case kWhatSeek:
719      {
720          onSeek(msg);
721          break;
722      }
723
724      case kWhatReadBuffer:
725      {
726          onReadBuffer(msg);
727          break;
728      }
729
730      case kWhatStopWidevine:
731      {
732          // mStopRead is only used for Widevine to prevent the video source
733          // from being read while the associated video decoder is shutting down.
734          mStopRead = true;
735          if (mVideoTrack.mSource != NULL) {
736              mVideoTrack.mPackets->clear();
737          }
738          sp<AMessage> response = new AMessage;
739          uint32_t replyID;
740          CHECK(msg->senderAwaitsResponse(&replyID));
741          response->postReply(replyID);
742          break;
743      }
744      default:
745          Source::onMessageReceived(msg);
746          break;
747    }
748}
749
750void NuPlayer::GenericSource::fetchTextData(
751        uint32_t sendWhat,
752        media_track_type type,
753        int32_t curGen,
754        sp<AnotherPacketSource> packets,
755        sp<AMessage> msg) {
756    int32_t msgGeneration;
757    CHECK(msg->findInt32("generation", &msgGeneration));
758    if (msgGeneration != curGen) {
759        // stale
760        return;
761    }
762
763    int32_t avail;
764    if (packets->hasBufferAvailable(&avail)) {
765        return;
766    }
767
768    int64_t timeUs;
769    CHECK(msg->findInt64("timeUs", &timeUs));
770
771    int64_t subTimeUs;
772    readBuffer(type, timeUs, &subTimeUs);
773
774    int64_t delayUs = subTimeUs - timeUs;
775    if (msg->what() == kWhatFetchSubtitleData) {
776        const int64_t oneSecUs = 1000000ll;
777        delayUs -= oneSecUs;
778    }
779    sp<AMessage> msg2 = new AMessage(sendWhat, id());
780    msg2->setInt32("generation", msgGeneration);
781    msg2->post(delayUs < 0 ? 0 : delayUs);
782}
783
784void NuPlayer::GenericSource::sendTextData(
785        uint32_t what,
786        media_track_type type,
787        int32_t curGen,
788        sp<AnotherPacketSource> packets,
789        sp<AMessage> msg) {
790    int32_t msgGeneration;
791    CHECK(msg->findInt32("generation", &msgGeneration));
792    if (msgGeneration != curGen) {
793        // stale
794        return;
795    }
796
797    int64_t subTimeUs;
798    if (packets->nextBufferTime(&subTimeUs) != OK) {
799        return;
800    }
801
802    int64_t nextSubTimeUs;
803    readBuffer(type, -1, &nextSubTimeUs);
804
805    sp<ABuffer> buffer;
806    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
807    if (dequeueStatus == OK) {
808        sp<AMessage> notify = dupNotify();
809        notify->setInt32("what", what);
810        notify->setBuffer("buffer", buffer);
811        notify->post();
812
813        const int64_t delayUs = nextSubTimeUs - subTimeUs;
814        msg->post(delayUs < 0 ? 0 : delayUs);
815    }
816}
817
818sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
819    sp<AMessage> msg = new AMessage(kWhatGetFormat, id());
820    msg->setInt32("audio", audio);
821
822    sp<AMessage> response;
823    void *format;
824    status_t err = msg->postAndAwaitResponse(&response);
825    if (err == OK && response != NULL) {
826        CHECK(response->findPointer("format", &format));
827        return (MetaData *)format;
828    } else {
829        return NULL;
830    }
831}
832
833void NuPlayer::GenericSource::onGetFormatMeta(sp<AMessage> msg) const {
834    int32_t audio;
835    CHECK(msg->findInt32("audio", &audio));
836
837    sp<AMessage> response = new AMessage;
838    sp<MetaData> format = doGetFormatMeta(audio);
839    response->setPointer("format", format.get());
840
841    uint32_t replyID;
842    CHECK(msg->senderAwaitsResponse(&replyID));
843    response->postReply(replyID);
844}
845
846sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
847    sp<MediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
848
849    if (source == NULL) {
850        return NULL;
851    }
852
853    return source->getFormat();
854}
855
856status_t NuPlayer::GenericSource::dequeueAccessUnit(
857        bool audio, sp<ABuffer> *accessUnit) {
858    Track *track = audio ? &mAudioTrack : &mVideoTrack;
859
860    if (track->mSource == NULL) {
861        return -EWOULDBLOCK;
862    }
863
864    if (mIsWidevine && !audio) {
865        // try to read a buffer as we may not have been able to the last time
866        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
867    }
868
869    status_t finalResult;
870    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
871        if (finalResult == OK) {
872            postReadBuffer(
873                    audio ? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
874            return -EWOULDBLOCK;
875        }
876        return finalResult;
877    }
878
879    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
880
881    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
882        postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
883    }
884
885    if (result != OK) {
886        if (mSubtitleTrack.mSource != NULL) {
887            mSubtitleTrack.mPackets->clear();
888            mFetchSubtitleDataGeneration++;
889        }
890        if (mTimedTextTrack.mSource != NULL) {
891            mTimedTextTrack.mPackets->clear();
892            mFetchTimedTextDataGeneration++;
893        }
894        return result;
895    }
896
897    int64_t timeUs;
898    status_t eosResult; // ignored
899    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
900    if (audio) {
901        mAudioLastDequeueTimeUs = timeUs;
902    } else {
903        mVideoLastDequeueTimeUs = timeUs;
904    }
905
906    if (mSubtitleTrack.mSource != NULL
907            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
908        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
909        msg->setInt64("timeUs", timeUs);
910        msg->setInt32("generation", mFetchSubtitleDataGeneration);
911        msg->post();
912    }
913
914    if (mTimedTextTrack.mSource != NULL
915            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
916        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
917        msg->setInt64("timeUs", timeUs);
918        msg->setInt32("generation", mFetchTimedTextDataGeneration);
919        msg->post();
920    }
921
922    return result;
923}
924
925status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
926    *durationUs = mDurationUs;
927    return OK;
928}
929
930size_t NuPlayer::GenericSource::getTrackCount() const {
931    return mSources.size();
932}
933
934sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
935    size_t trackCount = mSources.size();
936    if (trackIndex >= trackCount) {
937        return NULL;
938    }
939
940    sp<AMessage> format = new AMessage();
941    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
942
943    const char *mime;
944    CHECK(meta->findCString(kKeyMIMEType, &mime));
945
946    int32_t trackType;
947    if (!strncasecmp(mime, "video/", 6)) {
948        trackType = MEDIA_TRACK_TYPE_VIDEO;
949    } else if (!strncasecmp(mime, "audio/", 6)) {
950        trackType = MEDIA_TRACK_TYPE_AUDIO;
951    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
952        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
953    } else {
954        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
955    }
956    format->setInt32("type", trackType);
957
958    const char *lang;
959    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
960        lang = "und";
961    }
962    format->setString("language", lang);
963
964    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
965        format->setString("mime", mime);
966
967        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
968        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
969        meta->findInt32(kKeyTrackIsDefault, &isDefault);
970        meta->findInt32(kKeyTrackIsForced, &isForced);
971
972        format->setInt32("auto", !!isAutoselect);
973        format->setInt32("default", !!isDefault);
974        format->setInt32("forced", !!isForced);
975    }
976
977    return format;
978}
979
980ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
981    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, id());
982    msg->setInt32("type", type);
983
984    sp<AMessage> response;
985    int32_t index;
986    status_t err = msg->postAndAwaitResponse(&response);
987    if (err == OK && response != NULL) {
988        CHECK(response->findInt32("index", &index));
989        return index;
990    } else {
991        return -1;
992    }
993}
994
995void NuPlayer::GenericSource::onGetSelectedTrack(sp<AMessage> msg) const {
996    int32_t tmpType;
997    CHECK(msg->findInt32("type", &tmpType));
998    media_track_type type = (media_track_type)tmpType;
999
1000    sp<AMessage> response = new AMessage;
1001    ssize_t index = doGetSelectedTrack(type);
1002    response->setInt32("index", index);
1003
1004    uint32_t replyID;
1005    CHECK(msg->senderAwaitsResponse(&replyID));
1006    response->postReply(replyID);
1007}
1008
1009ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
1010    const Track *track = NULL;
1011    switch (type) {
1012    case MEDIA_TRACK_TYPE_VIDEO:
1013        track = &mVideoTrack;
1014        break;
1015    case MEDIA_TRACK_TYPE_AUDIO:
1016        track = &mAudioTrack;
1017        break;
1018    case MEDIA_TRACK_TYPE_TIMEDTEXT:
1019        track = &mTimedTextTrack;
1020        break;
1021    case MEDIA_TRACK_TYPE_SUBTITLE:
1022        track = &mSubtitleTrack;
1023        break;
1024    default:
1025        break;
1026    }
1027
1028    if (track != NULL && track->mSource != NULL) {
1029        return track->mIndex;
1030    }
1031
1032    return -1;
1033}
1034
1035status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select, int64_t timeUs) {
1036    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
1037    sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
1038    msg->setInt32("trackIndex", trackIndex);
1039    msg->setInt32("select", select);
1040    msg->setInt64("timeUs", timeUs);
1041
1042    sp<AMessage> response;
1043    status_t err = msg->postAndAwaitResponse(&response);
1044    if (err == OK && response != NULL) {
1045        CHECK(response->findInt32("err", &err));
1046    }
1047
1048    return err;
1049}
1050
1051void NuPlayer::GenericSource::onSelectTrack(sp<AMessage> msg) {
1052    int32_t trackIndex, select;
1053    int64_t timeUs;
1054    CHECK(msg->findInt32("trackIndex", &trackIndex));
1055    CHECK(msg->findInt32("select", &select));
1056    CHECK(msg->findInt64("timeUs", &timeUs));
1057
1058    sp<AMessage> response = new AMessage;
1059    status_t err = doSelectTrack(trackIndex, select, timeUs);
1060    response->setInt32("err", err);
1061
1062    uint32_t replyID;
1063    CHECK(msg->senderAwaitsResponse(&replyID));
1064    response->postReply(replyID);
1065}
1066
1067status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select, int64_t timeUs) {
1068    if (trackIndex >= mSources.size()) {
1069        return BAD_INDEX;
1070    }
1071
1072    if (!select) {
1073        Track* track = NULL;
1074        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
1075            track = &mSubtitleTrack;
1076            mFetchSubtitleDataGeneration++;
1077        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
1078            track = &mTimedTextTrack;
1079            mFetchTimedTextDataGeneration++;
1080        }
1081        if (track == NULL) {
1082            return INVALID_OPERATION;
1083        }
1084        track->mSource->stop();
1085        track->mSource = NULL;
1086        track->mPackets->clear();
1087        return OK;
1088    }
1089
1090    const sp<MediaSource> source = mSources.itemAt(trackIndex);
1091    sp<MetaData> meta = source->getFormat();
1092    const char *mime;
1093    CHECK(meta->findCString(kKeyMIMEType, &mime));
1094    if (!strncasecmp(mime, "text/", 5)) {
1095        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
1096        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
1097        if (track->mSource != NULL && track->mIndex == trackIndex) {
1098            return OK;
1099        }
1100        track->mIndex = trackIndex;
1101        if (track->mSource != NULL) {
1102            track->mSource->stop();
1103        }
1104        track->mSource = mSources.itemAt(trackIndex);
1105        track->mSource->start();
1106        if (track->mPackets == NULL) {
1107            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
1108        } else {
1109            track->mPackets->clear();
1110            track->mPackets->setFormat(track->mSource->getFormat());
1111
1112        }
1113
1114        if (isSubtitle) {
1115            mFetchSubtitleDataGeneration++;
1116        } else {
1117            mFetchTimedTextDataGeneration++;
1118        }
1119
1120        status_t eosResult; // ignored
1121        if (mSubtitleTrack.mSource != NULL
1122                && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
1123            sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
1124            msg->setInt64("timeUs", timeUs);
1125            msg->setInt32("generation", mFetchSubtitleDataGeneration);
1126            msg->post();
1127        }
1128
1129        if (mTimedTextTrack.mSource != NULL
1130                && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
1131            sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
1132            msg->setInt64("timeUs", timeUs);
1133            msg->setInt32("generation", mFetchTimedTextDataGeneration);
1134            msg->post();
1135        }
1136
1137        return OK;
1138    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
1139        bool audio = !strncasecmp(mime, "audio/", 6);
1140        Track *track = audio ? &mAudioTrack : &mVideoTrack;
1141        if (track->mSource != NULL && track->mIndex == trackIndex) {
1142            return OK;
1143        }
1144
1145        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, id());
1146        msg->setInt32("trackIndex", trackIndex);
1147        msg->post();
1148        return OK;
1149    }
1150
1151    return INVALID_OPERATION;
1152}
1153
1154status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs) {
1155    sp<AMessage> msg = new AMessage(kWhatSeek, id());
1156    msg->setInt64("seekTimeUs", seekTimeUs);
1157
1158    sp<AMessage> response;
1159    status_t err = msg->postAndAwaitResponse(&response);
1160    if (err == OK && response != NULL) {
1161        CHECK(response->findInt32("err", &err));
1162    }
1163
1164    return err;
1165}
1166
1167void NuPlayer::GenericSource::onSeek(sp<AMessage> msg) {
1168    int64_t seekTimeUs;
1169    CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1170
1171    sp<AMessage> response = new AMessage;
1172    status_t err = doSeek(seekTimeUs);
1173    response->setInt32("err", err);
1174
1175    uint32_t replyID;
1176    CHECK(msg->senderAwaitsResponse(&replyID));
1177    response->postReply(replyID);
1178}
1179
1180status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs) {
1181    // If the Widevine source is stopped, do not attempt to read any
1182    // more buffers.
1183    if (mStopRead) {
1184        return INVALID_OPERATION;
1185    }
1186    if (mVideoTrack.mSource != NULL) {
1187        int64_t actualTimeUs;
1188        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, &actualTimeUs);
1189
1190        seekTimeUs = actualTimeUs;
1191        mVideoLastDequeueTimeUs = seekTimeUs;
1192    }
1193
1194    if (mAudioTrack.mSource != NULL) {
1195        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
1196        mAudioLastDequeueTimeUs = seekTimeUs;
1197    }
1198
1199    setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
1200    if (!mStarted) {
1201        setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
1202    }
1203    return OK;
1204}
1205
1206sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
1207        MediaBuffer* mb,
1208        media_track_type trackType,
1209        int64_t /* seekTimeUs */,
1210        int64_t *actualTimeUs) {
1211    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
1212    size_t outLength = mb->range_length();
1213
1214    if (audio && mAudioIsVorbis) {
1215        outLength += sizeof(int32_t);
1216    }
1217
1218    sp<ABuffer> ab;
1219    if (mIsSecure && !audio) {
1220        // data is already provided in the buffer
1221        ab = new ABuffer(NULL, mb->range_length());
1222        mb->add_ref();
1223        ab->setMediaBufferBase(mb);
1224    } else {
1225        ab = new ABuffer(outLength);
1226        memcpy(ab->data(),
1227               (const uint8_t *)mb->data() + mb->range_offset(),
1228               mb->range_length());
1229    }
1230
1231    if (audio && mAudioIsVorbis) {
1232        int32_t numPageSamples;
1233        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
1234            numPageSamples = -1;
1235        }
1236
1237        uint8_t* abEnd = ab->data() + mb->range_length();
1238        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
1239    }
1240
1241    sp<AMessage> meta = ab->meta();
1242
1243    int64_t timeUs;
1244    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
1245    meta->setInt64("timeUs", timeUs);
1246
1247#if 0
1248    // Temporarily disable pre-roll till we have a full solution to handle
1249    // both single seek and continous seek gracefully.
1250    if (seekTimeUs > timeUs) {
1251        sp<AMessage> extra = new AMessage;
1252        extra->setInt64("resume-at-mediaTimeUs", seekTimeUs);
1253        meta->setMessage("extra", extra);
1254    }
1255#endif
1256
1257    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
1258        const char *mime;
1259        CHECK(mTimedTextTrack.mSource != NULL
1260                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
1261        meta->setString("mime", mime);
1262    }
1263
1264    int64_t durationUs;
1265    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
1266        meta->setInt64("durationUs", durationUs);
1267    }
1268
1269    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
1270        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
1271    }
1272
1273    if (actualTimeUs) {
1274        *actualTimeUs = timeUs;
1275    }
1276
1277    mb->release();
1278    mb = NULL;
1279
1280    return ab;
1281}
1282
1283void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
1284    Mutex::Autolock _l(mReadBufferLock);
1285
1286    if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
1287        mPendingReadBufferTypes |= (1 << trackType);
1288        sp<AMessage> msg = new AMessage(kWhatReadBuffer, id());
1289        msg->setInt32("trackType", trackType);
1290        msg->post();
1291    }
1292}
1293
1294void NuPlayer::GenericSource::onReadBuffer(sp<AMessage> msg) {
1295    int32_t tmpType;
1296    CHECK(msg->findInt32("trackType", &tmpType));
1297    media_track_type trackType = (media_track_type)tmpType;
1298    readBuffer(trackType);
1299    {
1300        // only protect the variable change, as readBuffer may
1301        // take considerable time.
1302        Mutex::Autolock _l(mReadBufferLock);
1303        mPendingReadBufferTypes &= ~(1 << trackType);
1304    }
1305}
1306
1307void NuPlayer::GenericSource::readBuffer(
1308        media_track_type trackType, int64_t seekTimeUs, int64_t *actualTimeUs, bool formatChange) {
1309    // Do not read data if Widevine source is stopped
1310    if (mStopRead) {
1311        return;
1312    }
1313    Track *track;
1314    size_t maxBuffers = 1;
1315    switch (trackType) {
1316        case MEDIA_TRACK_TYPE_VIDEO:
1317            track = &mVideoTrack;
1318            if (mIsWidevine) {
1319                maxBuffers = 2;
1320            }
1321            break;
1322        case MEDIA_TRACK_TYPE_AUDIO:
1323            track = &mAudioTrack;
1324            if (mIsWidevine) {
1325                maxBuffers = 8;
1326            } else {
1327                maxBuffers = 64;
1328            }
1329            break;
1330        case MEDIA_TRACK_TYPE_SUBTITLE:
1331            track = &mSubtitleTrack;
1332            break;
1333        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1334            track = &mTimedTextTrack;
1335            break;
1336        default:
1337            TRESPASS();
1338    }
1339
1340    if (track->mSource == NULL) {
1341        return;
1342    }
1343
1344    if (actualTimeUs) {
1345        *actualTimeUs = seekTimeUs;
1346    }
1347
1348    MediaSource::ReadOptions options;
1349
1350    bool seeking = false;
1351
1352    if (seekTimeUs >= 0) {
1353        options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
1354        seeking = true;
1355    }
1356
1357    if (mIsWidevine) {
1358        options.setNonBlocking();
1359    }
1360
1361    for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
1362        MediaBuffer *mbuf;
1363        status_t err = track->mSource->read(&mbuf, &options);
1364
1365        options.clearSeekTo();
1366
1367        if (err == OK) {
1368            int64_t timeUs;
1369            CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs));
1370            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1371                mAudioTimeUs = timeUs;
1372            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1373                mVideoTimeUs = timeUs;
1374            }
1375
1376            // formatChange && seeking: track whose source is changed during selection
1377            // formatChange && !seeking: track whose source is not changed during selection
1378            // !formatChange: normal seek
1379            if ((seeking || formatChange)
1380                    && (trackType == MEDIA_TRACK_TYPE_AUDIO
1381                    || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1382                ATSParser::DiscontinuityType type = (formatChange && seeking)
1383                        ? ATSParser::DISCONTINUITY_FORMATCHANGE
1384                        : ATSParser::DISCONTINUITY_NONE;
1385                track->mPackets->queueDiscontinuity( type, NULL, true /* discard */);
1386            }
1387
1388            sp<ABuffer> buffer = mediaBufferToABuffer(
1389                    mbuf, trackType, seekTimeUs, actualTimeUs);
1390            track->mPackets->queueAccessUnit(buffer);
1391            formatChange = false;
1392            seeking = false;
1393            ++numBuffers;
1394        } else if (err == WOULD_BLOCK) {
1395            break;
1396        } else if (err == INFO_FORMAT_CHANGED) {
1397#if 0
1398            track->mPackets->queueDiscontinuity(
1399                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1400                    NULL,
1401                    false /* discard */);
1402#endif
1403        } else {
1404            track->mPackets->signalEOS(err);
1405            break;
1406        }
1407    }
1408}
1409
1410}  // namespace android
1411