GenericSource.cpp revision e31eeb4cc65e6b0c98d8476cb89f746ddb79a1b0 
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      mFetchSubtitleDataGeneration(0),
49      mFetchTimedTextDataGeneration(0),
50      mDurationUs(0ll),
51      mAudioIsVorbis(false),
52      mIsWidevine(false),
53      mUIDValid(uidValid),
54      mUID(uid),
55      mDrmManagerClient(NULL),
56      mMetaDataSize(-1ll),
57      mBitrate(-1ll),
58      mPollBufferingGeneration(0),
59      mPendingReadBufferTypes(0) {
60    resetDataSource();
61    DataSource::RegisterDefaultSniffers();
62}
63
64void NuPlayer::GenericSource::resetDataSource() {
65    mAudioTimeUs = 0;
66    mVideoTimeUs = 0;
67    mHTTPService.clear();
68    mHttpSource.clear();
69    mUri.clear();
70    mUriHeaders.clear();
71    mFd = -1;
72    mOffset = 0;
73    mLength = 0;
74    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
75    mDecryptHandle = NULL;
76    mDrmManagerClient = NULL;
77    mStarted = false;
78    mStopRead = true;
79}
80
81status_t NuPlayer::GenericSource::setDataSource(
82        const sp<IMediaHTTPService> &httpService,
83        const char *url,
84        const KeyedVector<String8, String8> *headers) {
85    resetDataSource();
86
87    mHTTPService = httpService;
88    mUri = url;
89
90    if (headers) {
91        mUriHeaders = *headers;
92    }
93
94    // delay data source creation to prepareAsync() to avoid blocking
95    // the calling thread in setDataSource for any significant time.
96    return OK;
97}
98
99status_t NuPlayer::GenericSource::setDataSource(
100        int fd, int64_t offset, int64_t length) {
101    resetDataSource();
102
103    mFd = dup(fd);
104    mOffset = offset;
105    mLength = length;
106
107    // delay data source creation to prepareAsync() to avoid blocking
108    // the calling thread in setDataSource for any significant time.
109    return OK;
110}
111
112sp<MetaData> NuPlayer::GenericSource::getFileFormatMeta() const {
113    return mFileMeta;
114}
115
116status_t NuPlayer::GenericSource::initFromDataSource() {
117    sp<MediaExtractor> extractor;
118
119    CHECK(mDataSource != NULL);
120
121    if (mIsWidevine) {
122        String8 mimeType;
123        float confidence;
124        sp<AMessage> dummy;
125        bool success;
126
127        success = SniffWVM(mDataSource, &mimeType, &confidence, &dummy);
128        if (!success
129                || strcasecmp(
130                    mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM)) {
131            ALOGE("unsupported widevine mime: %s", mimeType.string());
132            return UNKNOWN_ERROR;
133        }
134
135        mWVMExtractor = new WVMExtractor(mDataSource);
136        mWVMExtractor->setAdaptiveStreamingMode(true);
137        if (mUIDValid) {
138            mWVMExtractor->setUID(mUID);
139        }
140        extractor = mWVMExtractor;
141    } else {
142        extractor = MediaExtractor::Create(mDataSource,
143                mSniffedMIME.empty() ? NULL: mSniffedMIME.c_str());
144    }
145
146    if (extractor == NULL) {
147        return UNKNOWN_ERROR;
148    }
149
150    if (extractor->getDrmFlag()) {
151        checkDrmStatus(mDataSource);
152    }
153
154    mFileMeta = extractor->getMetaData();
155    if (mFileMeta != NULL) {
156        int64_t duration;
157        if (mFileMeta->findInt64(kKeyDuration, &duration)) {
158            mDurationUs = duration;
159        }
160    }
161
162    int32_t totalBitrate = 0;
163
164    size_t numtracks = extractor->countTracks();
165    if (numtracks == 0) {
166        return UNKNOWN_ERROR;
167    }
168
169    for (size_t i = 0; i < numtracks; ++i) {
170        sp<MediaSource> track = extractor->getTrack(i);
171        if (track == NULL) {
172            continue;
173        }
174
175        sp<MetaData> meta = extractor->getTrackMetaData(i);
176
177        const char *mime;
178        CHECK(meta->findCString(kKeyMIMEType, &mime));
179
180        // Do the string compare immediately with "mime",
181        // we can't assume "mime" would stay valid after another
182        // extractor operation, some extractors might modify meta
183        // during getTrack() and make it invalid.
184        if (!strncasecmp(mime, "audio/", 6)) {
185            if (mAudioTrack.mSource == NULL) {
186                mAudioTrack.mIndex = i;
187                mAudioTrack.mSource = track;
188                mAudioTrack.mPackets =
189                    new AnotherPacketSource(mAudioTrack.mSource->getFormat());
190
191                if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) {
192                    mAudioIsVorbis = true;
193                } else {
194                    mAudioIsVorbis = false;
195                }
196            }
197        } else if (!strncasecmp(mime, "video/", 6)) {
198            if (mVideoTrack.mSource == NULL) {
199                mVideoTrack.mIndex = i;
200                mVideoTrack.mSource = track;
201                mVideoTrack.mPackets =
202                    new AnotherPacketSource(mVideoTrack.mSource->getFormat());
203
204                // check if the source requires secure buffers
205                int32_t secure;
206                if (meta->findInt32(kKeyRequiresSecureBuffers, &secure)
207                        && secure) {
208                    mIsWidevine = true;
209                    if (mUIDValid) {
210                        extractor->setUID(mUID);
211                    }
212                }
213            }
214        }
215
216        mSources.push(track);
217        int64_t durationUs;
218        if (meta->findInt64(kKeyDuration, &durationUs)) {
219            if (durationUs > mDurationUs) {
220                mDurationUs = durationUs;
221            }
222        }
223
224        int32_t bitrate;
225        if (totalBitrate >= 0 && meta->findInt32(kKeyBitRate, &bitrate)) {
226            totalBitrate += bitrate;
227        } else {
228            totalBitrate = -1;
229        }
230    }
231
232    if (mSources.size() == 0) {
233        ALOGE("b/23705695");
234        return UNKNOWN_ERROR;
235    }
236
237    mBitrate = totalBitrate;
238
239    return OK;
240}
241
242void NuPlayer::GenericSource::checkDrmStatus(const sp<DataSource>& dataSource) {
243    dataSource->getDrmInfo(mDecryptHandle, &mDrmManagerClient);
244    if (mDecryptHandle != NULL) {
245        CHECK(mDrmManagerClient);
246        if (RightsStatus::RIGHTS_VALID != mDecryptHandle->status) {
247            sp<AMessage> msg = dupNotify();
248            msg->setInt32("what", kWhatDrmNoLicense);
249            msg->post();
250        }
251    }
252}
253
254int64_t NuPlayer::GenericSource::getLastReadPosition() {
255    if (mAudioTrack.mSource != NULL) {
256        return mAudioTimeUs;
257    } else if (mVideoTrack.mSource != NULL) {
258        return mVideoTimeUs;
259    } else {
260        return 0;
261    }
262}
263
264status_t NuPlayer::GenericSource::setBuffers(
265        bool audio, Vector<MediaBuffer *> &buffers) {
266    if (mIsWidevine && !audio && mVideoTrack.mSource != NULL) {
267        return mVideoTrack.mSource->setBuffers(buffers);
268    }
269    return INVALID_OPERATION;
270}
271
272NuPlayer::GenericSource::~GenericSource() {
273    if (mLooper != NULL) {
274        mLooper->unregisterHandler(id());
275        mLooper->stop();
276    }
277}
278
279void NuPlayer::GenericSource::prepareAsync() {
280    if (mLooper == NULL) {
281        mLooper = new ALooper;
282        mLooper->setName("generic");
283        mLooper->start();
284
285        mLooper->registerHandler(this);
286    }
287
288    sp<AMessage> msg = new AMessage(kWhatPrepareAsync, id());
289    msg->post();
290}
291
292void NuPlayer::GenericSource::onPrepareAsync() {
293    // delayed data source creation
294    if (mDataSource == NULL) {
295        if (!mUri.empty()) {
296            const char* uri = mUri.c_str();
297            mIsWidevine = !strncasecmp(uri, "widevine://", 11);
298
299            if (!strncasecmp("http://", uri, 7)
300                    || !strncasecmp("https://", uri, 8)
301                    || mIsWidevine) {
302                mHttpSource = DataSource::CreateMediaHTTP(mHTTPService);
303                if (mHttpSource == NULL) {
304                    ALOGE("Failed to create http source!");
305                    notifyPreparedAndCleanup(UNKNOWN_ERROR);
306                    return;
307                }
308            }
309
310            mDataSource = DataSource::CreateFromURI(
311                   mHTTPService, uri, &mUriHeaders, &mContentType,
312                   static_cast<HTTPBase *>(mHttpSource.get()));
313        } else {
314            // set to false first, if the extractor
315            // comes back as secure, set it to true then.
316            mIsWidevine = false;
317
318            mDataSource = new FileSource(mFd, mOffset, mLength);
319        }
320
321        if (mDataSource == NULL) {
322            ALOGE("Failed to create data source!");
323            notifyPreparedAndCleanup(UNKNOWN_ERROR);
324            return;
325        }
326
327        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
328            mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get());
329        }
330
331        if (mIsWidevine || mCachedSource != NULL) {
332            schedulePollBuffering();
333        }
334    }
335
336    // check initial caching status
337    status_t err = prefillCacheIfNecessary();
338    if (err != OK) {
339        if (err == -EAGAIN) {
340            (new AMessage(kWhatPrepareAsync, id()))->post(200000);
341        } else {
342            ALOGE("Failed to prefill data cache!");
343            notifyPreparedAndCleanup(UNKNOWN_ERROR);
344        }
345        return;
346    }
347
348    // init extrator from data source
349    err = initFromDataSource();
350
351    if (err != OK) {
352        ALOGE("Failed to init from data source!");
353        notifyPreparedAndCleanup(err);
354        return;
355    }
356
357    if (mVideoTrack.mSource != NULL) {
358        sp<MetaData> meta = doGetFormatMeta(false /* audio */);
359        sp<AMessage> msg = new AMessage;
360        err = convertMetaDataToMessage(meta, &msg);
361        if(err != OK) {
362            notifyPreparedAndCleanup(err);
363            return;
364        }
365        notifyVideoSizeChanged(msg);
366    }
367
368    notifyFlagsChanged(
369            (mIsWidevine ? FLAG_SECURE : 0)
370            | FLAG_CAN_PAUSE
371            | FLAG_CAN_SEEK_BACKWARD
372            | FLAG_CAN_SEEK_FORWARD
373            | FLAG_CAN_SEEK);
374
375    notifyPrepared();
376}
377
378void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
379    if (err != OK) {
380        mMetaDataSize = -1ll;
381        mContentType = "";
382        mSniffedMIME = "";
383        {
384            sp<DataSource> dataSource = mDataSource;
385            sp<NuCachedSource2> cachedSource = mCachedSource;
386            sp<DataSource> httpSource = mHttpSource;
387            {
388                Mutex::Autolock _l(mDisconnectLock);
389                mDataSource.clear();
390                mDecryptHandle = NULL;
391                mDrmManagerClient = NULL;
392                mCachedSource.clear();
393                mHttpSource.clear();
394            }
395        }
396
397        cancelPollBuffering();
398    }
399    notifyPrepared(err);
400}
401
402status_t NuPlayer::GenericSource::prefillCacheIfNecessary() {
403    CHECK(mDataSource != NULL);
404
405    if (mCachedSource == NULL) {
406        // no prefill if the data source is not cached
407        return OK;
408    }
409
410    // We're not doing this for streams that appear to be audio-only
411    // streams to ensure that even low bandwidth streams start
412    // playing back fairly instantly.
413    if (!strncasecmp(mContentType.string(), "audio/", 6)) {
414        return OK;
415    }
416
417    // We're going to prefill the cache before trying to instantiate
418    // the extractor below, as the latter is an operation that otherwise
419    // could block on the datasource for a significant amount of time.
420    // During that time we'd be unable to abort the preparation phase
421    // without this prefill.
422
423    // Initially make sure we have at least 192 KB for the sniff
424    // to complete without blocking.
425    static const size_t kMinBytesForSniffing = 192 * 1024;
426    static const size_t kDefaultMetaSize = 200000;
427
428    status_t finalStatus;
429
430    size_t cachedDataRemaining =
431            mCachedSource->approxDataRemaining(&finalStatus);
432
433    if (finalStatus != OK || (mMetaDataSize >= 0
434            && (off64_t)cachedDataRemaining >= mMetaDataSize)) {
435        ALOGV("stop caching, status %d, "
436                "metaDataSize %lld, cachedDataRemaining %zu",
437                finalStatus, mMetaDataSize, cachedDataRemaining);
438        return OK;
439    }
440
441    ALOGV("now cached %zu bytes of data", cachedDataRemaining);
442
443    if (mMetaDataSize < 0
444            && cachedDataRemaining >= kMinBytesForSniffing) {
445        String8 tmp;
446        float confidence;
447        sp<AMessage> meta;
448        if (!mCachedSource->sniff(&tmp, &confidence, &meta)) {
449            return UNKNOWN_ERROR;
450        }
451
452        // We successfully identified the file's extractor to
453        // be, remember this mime type so we don't have to
454        // sniff it again when we call MediaExtractor::Create()
455        mSniffedMIME = tmp.string();
456
457        if (meta == NULL
458                || !meta->findInt64("meta-data-size",
459                        reinterpret_cast<int64_t*>(&mMetaDataSize))) {
460            mMetaDataSize = kDefaultMetaSize;
461        }
462
463        if (mMetaDataSize < 0ll) {
464            ALOGE("invalid metaDataSize = %lld bytes", mMetaDataSize);
465            return UNKNOWN_ERROR;
466        }
467    }
468
469    return -EAGAIN;
470}
471
472void NuPlayer::GenericSource::start() {
473    ALOGI("start");
474
475    mStopRead = false;
476    if (mAudioTrack.mSource != NULL) {
477        CHECK_EQ(mAudioTrack.mSource->start(), (status_t)OK);
478
479        postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
480    }
481
482    if (mVideoTrack.mSource != NULL) {
483        CHECK_EQ(mVideoTrack.mSource->start(), (status_t)OK);
484
485        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
486    }
487
488    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
489    mStarted = true;
490}
491
492void NuPlayer::GenericSource::stop() {
493    // nothing to do, just account for DRM playback status
494    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
495    mStarted = false;
496    if (mIsWidevine) {
497        // For a widevine source we need to prevent any further reads.
498        sp<AMessage> msg = new AMessage(kWhatStopWidevine, id());
499        sp<AMessage> response;
500        (void) msg->postAndAwaitResponse(&response);
501    }
502}
503
504void NuPlayer::GenericSource::pause() {
505    // nothing to do, just account for DRM playback status
506    setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
507    mStarted = false;
508}
509
510void NuPlayer::GenericSource::resume() {
511    // nothing to do, just account for DRM playback status
512    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
513    mStarted = true;
514}
515
516void NuPlayer::GenericSource::disconnect() {
517    sp<DataSource> dataSource, httpSource;
518    {
519        Mutex::Autolock _l(mDisconnectLock);
520        dataSource = mDataSource;
521        httpSource = mHttpSource;
522    }
523
524    if (dataSource != NULL) {
525        // disconnect data source
526        if (dataSource->flags() & DataSource::kIsCachingDataSource) {
527            static_cast<NuCachedSource2 *>(dataSource.get())->disconnect();
528        }
529    } else if (httpSource != NULL) {
530        static_cast<HTTPBase *>(httpSource.get())->disconnect();
531    }
532}
533
534void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
535    if (mDecryptHandle != NULL) {
536        mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
537    }
538    mSubtitleTrack.mPackets = new AnotherPacketSource(NULL);
539    mTimedTextTrack.mPackets = new AnotherPacketSource(NULL);
540}
541
542status_t NuPlayer::GenericSource::feedMoreTSData() {
543    return OK;
544}
545
546void NuPlayer::GenericSource::schedulePollBuffering() {
547    sp<AMessage> msg = new AMessage(kWhatPollBuffering, id());
548    msg->setInt32("generation", mPollBufferingGeneration);
549    msg->post(1000000ll);
550}
551
552void NuPlayer::GenericSource::cancelPollBuffering() {
553    ++mPollBufferingGeneration;
554}
555
556void NuPlayer::GenericSource::notifyBufferingUpdate(int percentage) {
557    sp<AMessage> msg = dupNotify();
558    msg->setInt32("what", kWhatBufferingUpdate);
559    msg->setInt32("percentage", percentage);
560    msg->post();
561}
562
563void NuPlayer::GenericSource::onPollBuffering() {
564    status_t finalStatus = UNKNOWN_ERROR;
565    int64_t cachedDurationUs = 0ll;
566
567    if (mCachedSource != NULL) {
568        size_t cachedDataRemaining =
569                mCachedSource->approxDataRemaining(&finalStatus);
570
571        if (finalStatus == OK) {
572            off64_t size;
573            int64_t bitrate = 0ll;
574            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
575                bitrate = size * 8000000ll / mDurationUs;
576            } else if (mBitrate > 0) {
577                bitrate = mBitrate;
578            }
579            if (bitrate > 0) {
580                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
581            }
582        }
583    } else if (mWVMExtractor != NULL) {
584        cachedDurationUs
585            = mWVMExtractor->getCachedDurationUs(&finalStatus);
586    }
587
588    if (finalStatus == ERROR_END_OF_STREAM) {
589        notifyBufferingUpdate(100);
590        cancelPollBuffering();
591        return;
592    } else if (cachedDurationUs > 0ll && mDurationUs > 0ll) {
593        int percentage = 100.0 * cachedDurationUs / mDurationUs;
594        if (percentage > 100) {
595            percentage = 100;
596        }
597
598        notifyBufferingUpdate(percentage);
599    }
600
601    schedulePollBuffering();
602}
603
604
605void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
606    switch (msg->what()) {
607      case kWhatPrepareAsync:
608      {
609          onPrepareAsync();
610          break;
611      }
612      case kWhatFetchSubtitleData:
613      {
614          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
615                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
616          break;
617      }
618
619      case kWhatFetchTimedTextData:
620      {
621          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
622                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
623          break;
624      }
625
626      case kWhatSendSubtitleData:
627      {
628          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
629                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
630          break;
631      }
632
633      case kWhatSendTimedTextData:
634      {
635          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
636                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
637          break;
638      }
639
640      case kWhatChangeAVSource:
641      {
642          int32_t trackIndex;
643          CHECK(msg->findInt32("trackIndex", &trackIndex));
644          const sp<MediaSource> source = mSources.itemAt(trackIndex);
645
646          Track* track;
647          const char *mime;
648          media_track_type trackType, counterpartType;
649          sp<MetaData> meta = source->getFormat();
650          meta->findCString(kKeyMIMEType, &mime);
651          if (!strncasecmp(mime, "audio/", 6)) {
652              track = &mAudioTrack;
653              trackType = MEDIA_TRACK_TYPE_AUDIO;
654              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
655          } else {
656              CHECK(!strncasecmp(mime, "video/", 6));
657              track = &mVideoTrack;
658              trackType = MEDIA_TRACK_TYPE_VIDEO;
659              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
660          }
661
662
663          if (track->mSource != NULL) {
664              track->mSource->stop();
665          }
666          track->mSource = source;
667          track->mSource->start();
668          track->mIndex = trackIndex;
669
670          status_t avail;
671          if (!track->mPackets->hasBufferAvailable(&avail)) {
672              // sync from other source
673              TRESPASS();
674              break;
675          }
676
677          int64_t timeUs, actualTimeUs;
678          const bool formatChange = true;
679          sp<AMessage> latestMeta = track->mPackets->getLatestEnqueuedMeta();
680          CHECK(latestMeta != NULL && latestMeta->findInt64("timeUs", &timeUs));
681          readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
682          readBuffer(counterpartType, -1, NULL, formatChange);
683          ALOGV("timeUs %lld actualTimeUs %lld", timeUs, actualTimeUs);
684
685          break;
686      }
687      case kWhatPollBuffering:
688      {
689          int32_t generation;
690          CHECK(msg->findInt32("generation", &generation));
691          if (generation == mPollBufferingGeneration) {
692              onPollBuffering();
693          }
694          break;
695      }
696
697      case kWhatGetFormat:
698      {
699          onGetFormatMeta(msg);
700          break;
701      }
702
703      case kWhatGetSelectedTrack:
704      {
705          onGetSelectedTrack(msg);
706          break;
707      }
708
709      case kWhatSelectTrack:
710      {
711          onSelectTrack(msg);
712          break;
713      }
714
715      case kWhatSeek:
716      {
717          onSeek(msg);
718          break;
719      }
720
721      case kWhatReadBuffer:
722      {
723          onReadBuffer(msg);
724          break;
725      }
726
727      case kWhatStopWidevine:
728      {
729          // mStopRead is only used for Widevine to prevent the video source
730          // from being read while the associated video decoder is shutting down.
731          mStopRead = true;
732          if (mVideoTrack.mSource != NULL) {
733              mVideoTrack.mPackets->clear();
734          }
735          sp<AMessage> response = new AMessage;
736          uint32_t replyID;
737          CHECK(msg->senderAwaitsResponse(&replyID));
738          response->postReply(replyID);
739          break;
740      }
741      default:
742          Source::onMessageReceived(msg);
743          break;
744    }
745}
746
747void NuPlayer::GenericSource::fetchTextData(
748        uint32_t sendWhat,
749        media_track_type type,
750        int32_t curGen,
751        sp<AnotherPacketSource> packets,
752        sp<AMessage> msg) {
753    int32_t msgGeneration;
754    CHECK(msg->findInt32("generation", &msgGeneration));
755    if (msgGeneration != curGen) {
756        // stale
757        return;
758    }
759
760    int32_t avail;
761    if (packets->hasBufferAvailable(&avail)) {
762        return;
763    }
764
765    int64_t timeUs;
766    CHECK(msg->findInt64("timeUs", &timeUs));
767
768    int64_t subTimeUs;
769    readBuffer(type, timeUs, &subTimeUs);
770
771    int64_t delayUs = subTimeUs - timeUs;
772    if (msg->what() == kWhatFetchSubtitleData) {
773        const int64_t oneSecUs = 1000000ll;
774        delayUs -= oneSecUs;
775    }
776    sp<AMessage> msg2 = new AMessage(sendWhat, id());
777    msg2->setInt32("generation", msgGeneration);
778    msg2->post(delayUs < 0 ? 0 : delayUs);
779}
780
781void NuPlayer::GenericSource::sendTextData(
782        uint32_t what,
783        media_track_type type,
784        int32_t curGen,
785        sp<AnotherPacketSource> packets,
786        sp<AMessage> msg) {
787    int32_t msgGeneration;
788    CHECK(msg->findInt32("generation", &msgGeneration));
789    if (msgGeneration != curGen) {
790        // stale
791        return;
792    }
793
794    int64_t subTimeUs;
795    if (packets->nextBufferTime(&subTimeUs) != OK) {
796        return;
797    }
798
799    int64_t nextSubTimeUs;
800    readBuffer(type, -1, &nextSubTimeUs);
801
802    sp<ABuffer> buffer;
803    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
804    if (dequeueStatus == OK) {
805        sp<AMessage> notify = dupNotify();
806        notify->setInt32("what", what);
807        notify->setBuffer("buffer", buffer);
808        notify->post();
809
810        const int64_t delayUs = nextSubTimeUs - subTimeUs;
811        msg->post(delayUs < 0 ? 0 : delayUs);
812    }
813}
814
815sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
816    sp<AMessage> msg = new AMessage(kWhatGetFormat, id());
817    msg->setInt32("audio", audio);
818
819    sp<AMessage> response;
820    void *format;
821    status_t err = msg->postAndAwaitResponse(&response);
822    if (err == OK && response != NULL) {
823        CHECK(response->findPointer("format", &format));
824        return (MetaData *)format;
825    } else {
826        return NULL;
827    }
828}
829
830void NuPlayer::GenericSource::onGetFormatMeta(sp<AMessage> msg) const {
831    int32_t audio;
832    CHECK(msg->findInt32("audio", &audio));
833
834    sp<AMessage> response = new AMessage;
835    sp<MetaData> format = doGetFormatMeta(audio);
836    response->setPointer("format", format.get());
837
838    uint32_t replyID;
839    CHECK(msg->senderAwaitsResponse(&replyID));
840    response->postReply(replyID);
841}
842
843sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
844    sp<MediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
845
846    if (source == NULL) {
847        return NULL;
848    }
849
850    return source->getFormat();
851}
852
853status_t NuPlayer::GenericSource::dequeueAccessUnit(
854        bool audio, sp<ABuffer> *accessUnit) {
855    Track *track = audio ? &mAudioTrack : &mVideoTrack;
856
857    if (track->mSource == NULL) {
858        return -EWOULDBLOCK;
859    }
860
861    if (mIsWidevine && !audio) {
862        // try to read a buffer as we may not have been able to the last time
863        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
864    }
865
866    status_t finalResult;
867    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
868        return (finalResult == OK ? -EWOULDBLOCK : finalResult);
869    }
870
871    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
872
873    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
874        postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
875    }
876
877    if (result != OK) {
878        if (mSubtitleTrack.mSource != NULL) {
879            mSubtitleTrack.mPackets->clear();
880            mFetchSubtitleDataGeneration++;
881        }
882        if (mTimedTextTrack.mSource != NULL) {
883            mTimedTextTrack.mPackets->clear();
884            mFetchTimedTextDataGeneration++;
885        }
886        return result;
887    }
888
889    int64_t timeUs;
890    status_t eosResult; // ignored
891    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
892
893    if (mSubtitleTrack.mSource != NULL
894            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
895        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
896        msg->setInt64("timeUs", timeUs);
897        msg->setInt32("generation", mFetchSubtitleDataGeneration);
898        msg->post();
899    }
900
901    if (mTimedTextTrack.mSource != NULL
902            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
903        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
904        msg->setInt64("timeUs", timeUs);
905        msg->setInt32("generation", mFetchTimedTextDataGeneration);
906        msg->post();
907    }
908
909    return result;
910}
911
912status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
913    *durationUs = mDurationUs;
914    return OK;
915}
916
917size_t NuPlayer::GenericSource::getTrackCount() const {
918    return mSources.size();
919}
920
921sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
922    size_t trackCount = mSources.size();
923    if (trackIndex >= trackCount) {
924        return NULL;
925    }
926
927    sp<AMessage> format = new AMessage();
928    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
929
930    const char *mime;
931    CHECK(meta->findCString(kKeyMIMEType, &mime));
932
933    int32_t trackType;
934    if (!strncasecmp(mime, "video/", 6)) {
935        trackType = MEDIA_TRACK_TYPE_VIDEO;
936    } else if (!strncasecmp(mime, "audio/", 6)) {
937        trackType = MEDIA_TRACK_TYPE_AUDIO;
938    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
939        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
940    } else {
941        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
942    }
943    format->setInt32("type", trackType);
944
945    const char *lang;
946    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
947        lang = "und";
948    }
949    format->setString("language", lang);
950
951    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
952        format->setString("mime", mime);
953
954        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
955        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
956        meta->findInt32(kKeyTrackIsDefault, &isDefault);
957        meta->findInt32(kKeyTrackIsForced, &isForced);
958
959        format->setInt32("auto", !!isAutoselect);
960        format->setInt32("default", !!isDefault);
961        format->setInt32("forced", !!isForced);
962    }
963
964    return format;
965}
966
967ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
968    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, id());
969    msg->setInt32("type", type);
970
971    sp<AMessage> response;
972    int32_t index;
973    status_t err = msg->postAndAwaitResponse(&response);
974    if (err == OK && response != NULL) {
975        CHECK(response->findInt32("index", &index));
976        return index;
977    } else {
978        return -1;
979    }
980}
981
982void NuPlayer::GenericSource::onGetSelectedTrack(sp<AMessage> msg) const {
983    int32_t tmpType;
984    CHECK(msg->findInt32("type", &tmpType));
985    media_track_type type = (media_track_type)tmpType;
986
987    sp<AMessage> response = new AMessage;
988    ssize_t index = doGetSelectedTrack(type);
989    response->setInt32("index", index);
990
991    uint32_t replyID;
992    CHECK(msg->senderAwaitsResponse(&replyID));
993    response->postReply(replyID);
994}
995
996ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
997    const Track *track = NULL;
998    switch (type) {
999    case MEDIA_TRACK_TYPE_VIDEO:
1000        track = &mVideoTrack;
1001        break;
1002    case MEDIA_TRACK_TYPE_AUDIO:
1003        track = &mAudioTrack;
1004        break;
1005    case MEDIA_TRACK_TYPE_TIMEDTEXT:
1006        track = &mTimedTextTrack;
1007        break;
1008    case MEDIA_TRACK_TYPE_SUBTITLE:
1009        track = &mSubtitleTrack;
1010        break;
1011    default:
1012        break;
1013    }
1014
1015    if (track != NULL && track->mSource != NULL) {
1016        return track->mIndex;
1017    }
1018
1019    return -1;
1020}
1021
1022status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select) {
1023    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
1024    sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
1025    msg->setInt32("trackIndex", trackIndex);
1026    msg->setInt32("select", select);
1027
1028    sp<AMessage> response;
1029    status_t err = msg->postAndAwaitResponse(&response);
1030    if (err == OK && response != NULL) {
1031        CHECK(response->findInt32("err", &err));
1032    }
1033
1034    return err;
1035}
1036
1037void NuPlayer::GenericSource::onSelectTrack(sp<AMessage> msg) {
1038    int32_t trackIndex, select;
1039    CHECK(msg->findInt32("trackIndex", &trackIndex));
1040    CHECK(msg->findInt32("select", &select));
1041
1042    sp<AMessage> response = new AMessage;
1043    status_t err = doSelectTrack(trackIndex, select);
1044    response->setInt32("err", err);
1045
1046    uint32_t replyID;
1047    CHECK(msg->senderAwaitsResponse(&replyID));
1048    response->postReply(replyID);
1049}
1050
1051status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select) {
1052    if (trackIndex >= mSources.size()) {
1053        return BAD_INDEX;
1054    }
1055
1056    if (!select) {
1057        Track* track = NULL;
1058        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
1059            track = &mSubtitleTrack;
1060            mFetchSubtitleDataGeneration++;
1061        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
1062            track = &mTimedTextTrack;
1063            mFetchTimedTextDataGeneration++;
1064        }
1065        if (track == NULL) {
1066            return INVALID_OPERATION;
1067        }
1068        track->mSource->stop();
1069        track->mSource = NULL;
1070        track->mPackets->clear();
1071        return OK;
1072    }
1073
1074    const sp<MediaSource> source = mSources.itemAt(trackIndex);
1075    sp<MetaData> meta = source->getFormat();
1076    const char *mime;
1077    CHECK(meta->findCString(kKeyMIMEType, &mime));
1078    if (!strncasecmp(mime, "text/", 5)) {
1079        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
1080        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
1081        if (track->mSource != NULL && track->mIndex == trackIndex) {
1082            return OK;
1083        }
1084        track->mIndex = trackIndex;
1085        if (track->mSource != NULL) {
1086            track->mSource->stop();
1087        }
1088        track->mSource = mSources.itemAt(trackIndex);
1089        track->mSource->start();
1090        if (track->mPackets == NULL) {
1091            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
1092        } else {
1093            track->mPackets->clear();
1094            track->mPackets->setFormat(track->mSource->getFormat());
1095
1096        }
1097
1098        if (isSubtitle) {
1099            mFetchSubtitleDataGeneration++;
1100        } else {
1101            mFetchTimedTextDataGeneration++;
1102        }
1103
1104        return OK;
1105    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
1106        bool audio = !strncasecmp(mime, "audio/", 6);
1107        Track *track = audio ? &mAudioTrack : &mVideoTrack;
1108        if (track->mSource != NULL && track->mIndex == trackIndex) {
1109            return OK;
1110        }
1111
1112        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, id());
1113        msg->setInt32("trackIndex", trackIndex);
1114        msg->post();
1115        return OK;
1116    }
1117
1118    return INVALID_OPERATION;
1119}
1120
1121status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs) {
1122    sp<AMessage> msg = new AMessage(kWhatSeek, id());
1123    msg->setInt64("seekTimeUs", seekTimeUs);
1124
1125    sp<AMessage> response;
1126    status_t err = msg->postAndAwaitResponse(&response);
1127    if (err == OK && response != NULL) {
1128        CHECK(response->findInt32("err", &err));
1129    }
1130
1131    return err;
1132}
1133
1134void NuPlayer::GenericSource::onSeek(sp<AMessage> msg) {
1135    int64_t seekTimeUs;
1136    CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1137
1138    sp<AMessage> response = new AMessage;
1139    status_t err = doSeek(seekTimeUs);
1140    response->setInt32("err", err);
1141
1142    uint32_t replyID;
1143    CHECK(msg->senderAwaitsResponse(&replyID));
1144    response->postReply(replyID);
1145}
1146
1147status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs) {
1148    // If the Widevine source is stopped, do not attempt to read any
1149    // more buffers.
1150    if (mStopRead) {
1151        return INVALID_OPERATION;
1152    }
1153    if (mVideoTrack.mSource != NULL) {
1154        int64_t actualTimeUs;
1155        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, &actualTimeUs);
1156
1157        seekTimeUs = actualTimeUs;
1158    }
1159
1160    if (mAudioTrack.mSource != NULL) {
1161        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
1162    }
1163
1164    setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
1165    if (!mStarted) {
1166        setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
1167    }
1168    return OK;
1169}
1170
1171sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
1172        MediaBuffer* mb,
1173        media_track_type trackType,
1174        int64_t *actualTimeUs) {
1175    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
1176    size_t outLength = mb->range_length();
1177
1178    if (audio && mAudioIsVorbis) {
1179        outLength += sizeof(int32_t);
1180    }
1181
1182    sp<ABuffer> ab;
1183    if (mIsWidevine && !audio) {
1184        // data is already provided in the buffer
1185        ab = new ABuffer(NULL, mb->range_length());
1186        mb->add_ref();
1187        ab->setMediaBufferBase(mb);
1188    } else {
1189        ab = new ABuffer(outLength);
1190        memcpy(ab->data(),
1191               (const uint8_t *)mb->data() + mb->range_offset(),
1192               mb->range_length());
1193    }
1194
1195    if (audio && mAudioIsVorbis) {
1196        int32_t numPageSamples;
1197        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
1198            numPageSamples = -1;
1199        }
1200
1201        uint8_t* abEnd = ab->data() + mb->range_length();
1202        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
1203    }
1204
1205    sp<AMessage> meta = ab->meta();
1206
1207    int64_t timeUs;
1208    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
1209    meta->setInt64("timeUs", timeUs);
1210
1211    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
1212        const char *mime;
1213        CHECK(mTimedTextTrack.mSource != NULL
1214                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
1215        meta->setString("mime", mime);
1216    }
1217
1218    int64_t durationUs;
1219    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
1220        meta->setInt64("durationUs", durationUs);
1221    }
1222
1223    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
1224        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
1225    }
1226
1227    if (actualTimeUs) {
1228        *actualTimeUs = timeUs;
1229    }
1230
1231    mb->release();
1232    mb = NULL;
1233
1234    return ab;
1235}
1236
1237void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
1238    Mutex::Autolock _l(mReadBufferLock);
1239
1240    if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
1241        mPendingReadBufferTypes |= (1 << trackType);
1242        sp<AMessage> msg = new AMessage(kWhatReadBuffer, id());
1243        msg->setInt32("trackType", trackType);
1244        msg->post();
1245    }
1246}
1247
1248void NuPlayer::GenericSource::onReadBuffer(sp<AMessage> msg) {
1249    int32_t tmpType;
1250    CHECK(msg->findInt32("trackType", &tmpType));
1251    media_track_type trackType = (media_track_type)tmpType;
1252    {
1253        // only protect the variable change, as readBuffer may
1254        // take considerable time.  This may result in one extra
1255        // read being processed, but that is benign.
1256        Mutex::Autolock _l(mReadBufferLock);
1257        mPendingReadBufferTypes &= ~(1 << trackType);
1258    }
1259    readBuffer(trackType);
1260}
1261
1262void NuPlayer::GenericSource::readBuffer(
1263        media_track_type trackType, int64_t seekTimeUs, int64_t *actualTimeUs, bool formatChange) {
1264    // Do not read data if Widevine source is stopped
1265    if (mStopRead) {
1266        return;
1267    }
1268    Track *track;
1269    size_t maxBuffers = 1;
1270    switch (trackType) {
1271        case MEDIA_TRACK_TYPE_VIDEO:
1272            track = &mVideoTrack;
1273            if (mIsWidevine) {
1274                maxBuffers = 2;
1275            }
1276            break;
1277        case MEDIA_TRACK_TYPE_AUDIO:
1278            track = &mAudioTrack;
1279            if (mIsWidevine) {
1280                maxBuffers = 8;
1281            } else {
1282                maxBuffers = 64;
1283            }
1284            break;
1285        case MEDIA_TRACK_TYPE_SUBTITLE:
1286            track = &mSubtitleTrack;
1287            break;
1288        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1289            track = &mTimedTextTrack;
1290            break;
1291        default:
1292            TRESPASS();
1293    }
1294
1295    if (track->mSource == NULL) {
1296        return;
1297    }
1298
1299    if (actualTimeUs) {
1300        *actualTimeUs = seekTimeUs;
1301    }
1302
1303    MediaSource::ReadOptions options;
1304
1305    bool seeking = false;
1306
1307    if (seekTimeUs >= 0) {
1308        options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
1309        seeking = true;
1310    }
1311
1312    if (mIsWidevine && trackType != MEDIA_TRACK_TYPE_AUDIO) {
1313        options.setNonBlocking();
1314    }
1315
1316    for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
1317        MediaBuffer *mbuf;
1318        status_t err = track->mSource->read(&mbuf, &options);
1319
1320        options.clearSeekTo();
1321
1322        if (err == OK) {
1323            int64_t timeUs;
1324            CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs));
1325            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1326                mAudioTimeUs = timeUs;
1327            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1328                mVideoTimeUs = timeUs;
1329            }
1330
1331            // formatChange && seeking: track whose source is changed during selection
1332            // formatChange && !seeking: track whose source is not changed during selection
1333            // !formatChange: normal seek
1334            if ((seeking || formatChange)
1335                    && (trackType == MEDIA_TRACK_TYPE_AUDIO
1336                    || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1337                ATSParser::DiscontinuityType type = formatChange
1338                        ? (seeking
1339                                ? ATSParser::DISCONTINUITY_FORMATCHANGE
1340                                : ATSParser::DISCONTINUITY_NONE)
1341                        : ATSParser::DISCONTINUITY_SEEK;
1342                track->mPackets->queueDiscontinuity( type, NULL, true /* discard */);
1343            }
1344
1345            sp<ABuffer> buffer = mediaBufferToABuffer(mbuf, trackType, actualTimeUs);
1346            track->mPackets->queueAccessUnit(buffer);
1347            formatChange = false;
1348            seeking = false;
1349            ++numBuffers;
1350        } else if (err == WOULD_BLOCK) {
1351            break;
1352        } else if (err == INFO_FORMAT_CHANGED) {
1353#if 0
1354            track->mPackets->queueDiscontinuity(
1355                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1356                    NULL,
1357                    false /* discard */);
1358#endif
1359        } else {
1360            track->mPackets->signalEOS(err);
1361            break;
1362        }
1363    }
1364}
1365
1366}  // namespace android
1367