GenericSource.cpp revision 224858e719d045c8554856b12c4ab73d2375cf33 
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
172        sp<MetaData> meta = extractor->getTrackMetaData(i);
173
174        const char *mime;
175        CHECK(meta->findCString(kKeyMIMEType, &mime));
176
177        // Do the string compare immediately with "mime",
178        // we can't assume "mime" would stay valid after another
179        // extractor operation, some extractors might modify meta
180        // during getTrack() and make it invalid.
181        if (!strncasecmp(mime, "audio/", 6)) {
182            if (mAudioTrack.mSource == NULL) {
183                mAudioTrack.mIndex = i;
184                mAudioTrack.mSource = track;
185                mAudioTrack.mPackets =
186                    new AnotherPacketSource(mAudioTrack.mSource->getFormat());
187
188                if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) {
189                    mAudioIsVorbis = true;
190                } else {
191                    mAudioIsVorbis = false;
192                }
193            }
194        } else if (!strncasecmp(mime, "video/", 6)) {
195            if (mVideoTrack.mSource == NULL) {
196                mVideoTrack.mIndex = i;
197                mVideoTrack.mSource = track;
198                mVideoTrack.mPackets =
199                    new AnotherPacketSource(mVideoTrack.mSource->getFormat());
200
201                // check if the source requires secure buffers
202                int32_t secure;
203                if (meta->findInt32(kKeyRequiresSecureBuffers, &secure)
204                        && secure) {
205                    mIsWidevine = true;
206                    if (mUIDValid) {
207                        extractor->setUID(mUID);
208                    }
209                }
210            }
211        }
212
213        if (track != NULL) {
214            mSources.push(track);
215            int64_t durationUs;
216            if (meta->findInt64(kKeyDuration, &durationUs)) {
217                if (durationUs > mDurationUs) {
218                    mDurationUs = durationUs;
219                }
220            }
221
222            int32_t bitrate;
223            if (totalBitrate >= 0 && meta->findInt32(kKeyBitRate, &bitrate)) {
224                totalBitrate += bitrate;
225            } else {
226                totalBitrate = -1;
227            }
228        }
229    }
230
231    mBitrate = totalBitrate;
232
233    return OK;
234}
235
236void NuPlayer::GenericSource::checkDrmStatus(const sp<DataSource>& dataSource) {
237    dataSource->getDrmInfo(mDecryptHandle, &mDrmManagerClient);
238    if (mDecryptHandle != NULL) {
239        CHECK(mDrmManagerClient);
240        if (RightsStatus::RIGHTS_VALID != mDecryptHandle->status) {
241            sp<AMessage> msg = dupNotify();
242            msg->setInt32("what", kWhatDrmNoLicense);
243            msg->post();
244        }
245    }
246}
247
248int64_t NuPlayer::GenericSource::getLastReadPosition() {
249    if (mAudioTrack.mSource != NULL) {
250        return mAudioTimeUs;
251    } else if (mVideoTrack.mSource != NULL) {
252        return mVideoTimeUs;
253    } else {
254        return 0;
255    }
256}
257
258status_t NuPlayer::GenericSource::setBuffers(
259        bool audio, Vector<MediaBuffer *> &buffers) {
260    if (mIsWidevine && !audio) {
261        return mVideoTrack.mSource->setBuffers(buffers);
262    }
263    return INVALID_OPERATION;
264}
265
266NuPlayer::GenericSource::~GenericSource() {
267    if (mLooper != NULL) {
268        mLooper->unregisterHandler(id());
269        mLooper->stop();
270    }
271}
272
273void NuPlayer::GenericSource::prepareAsync() {
274    if (mLooper == NULL) {
275        mLooper = new ALooper;
276        mLooper->setName("generic");
277        mLooper->start();
278
279        mLooper->registerHandler(this);
280    }
281
282    sp<AMessage> msg = new AMessage(kWhatPrepareAsync, id());
283    msg->post();
284}
285
286void NuPlayer::GenericSource::onPrepareAsync() {
287    // delayed data source creation
288    if (mDataSource == NULL) {
289        if (!mUri.empty()) {
290            const char* uri = mUri.c_str();
291            mIsWidevine = !strncasecmp(uri, "widevine://", 11);
292
293            if (!strncasecmp("http://", uri, 7)
294                    || !strncasecmp("https://", uri, 8)
295                    || mIsWidevine) {
296                mHttpSource = DataSource::CreateMediaHTTP(mHTTPService);
297                if (mHttpSource == NULL) {
298                    ALOGE("Failed to create http source!");
299                    notifyPreparedAndCleanup(UNKNOWN_ERROR);
300                    return;
301                }
302            }
303
304            mDataSource = DataSource::CreateFromURI(
305                   mHTTPService, uri, &mUriHeaders, &mContentType,
306                   static_cast<HTTPBase *>(mHttpSource.get()));
307        } else {
308            // set to false first, if the extractor
309            // comes back as secure, set it to true then.
310            mIsWidevine = false;
311
312            mDataSource = new FileSource(mFd, mOffset, mLength);
313        }
314
315        if (mDataSource == NULL) {
316            ALOGE("Failed to create data source!");
317            notifyPreparedAndCleanup(UNKNOWN_ERROR);
318            return;
319        }
320
321        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
322            mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get());
323        }
324
325        if (mIsWidevine || mCachedSource != NULL) {
326            schedulePollBuffering();
327        }
328    }
329
330    // check initial caching status
331    status_t err = prefillCacheIfNecessary();
332    if (err != OK) {
333        if (err == -EAGAIN) {
334            (new AMessage(kWhatPrepareAsync, id()))->post(200000);
335        } else {
336            ALOGE("Failed to prefill data cache!");
337            notifyPreparedAndCleanup(UNKNOWN_ERROR);
338        }
339        return;
340    }
341
342    // init extrator from data source
343    err = initFromDataSource();
344
345    if (err != OK) {
346        ALOGE("Failed to init from data source!");
347        notifyPreparedAndCleanup(err);
348        return;
349    }
350
351    if (mVideoTrack.mSource != NULL) {
352        sp<MetaData> meta = doGetFormatMeta(false /* audio */);
353        sp<AMessage> msg = new AMessage;
354        err = convertMetaDataToMessage(meta, &msg);
355        if(err != OK) {
356            notifyPreparedAndCleanup(err);
357            return;
358        }
359        notifyVideoSizeChanged(msg);
360    }
361
362    notifyFlagsChanged(
363            (mIsWidevine ? FLAG_SECURE : 0)
364            | FLAG_CAN_PAUSE
365            | FLAG_CAN_SEEK_BACKWARD
366            | FLAG_CAN_SEEK_FORWARD
367            | FLAG_CAN_SEEK);
368
369    notifyPrepared();
370}
371
372void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
373    if (err != OK) {
374        mMetaDataSize = -1ll;
375        mContentType = "";
376        mSniffedMIME = "";
377        {
378            sp<DataSource> dataSource = mDataSource;
379            sp<NuCachedSource2> cachedSource = mCachedSource;
380            sp<DataSource> httpSource = mHttpSource;
381            {
382                Mutex::Autolock _l(mDisconnectLock);
383                mDataSource.clear();
384                mDrmManagerClient = NULL;
385                mCachedSource.clear();
386                mHttpSource.clear();
387            }
388        }
389
390        cancelPollBuffering();
391    }
392    notifyPrepared(err);
393}
394
395status_t NuPlayer::GenericSource::prefillCacheIfNecessary() {
396    CHECK(mDataSource != NULL);
397
398    if (mCachedSource == NULL) {
399        // no prefill if the data source is not cached
400        return OK;
401    }
402
403    // We're not doing this for streams that appear to be audio-only
404    // streams to ensure that even low bandwidth streams start
405    // playing back fairly instantly.
406    if (!strncasecmp(mContentType.string(), "audio/", 6)) {
407        return OK;
408    }
409
410    // We're going to prefill the cache before trying to instantiate
411    // the extractor below, as the latter is an operation that otherwise
412    // could block on the datasource for a significant amount of time.
413    // During that time we'd be unable to abort the preparation phase
414    // without this prefill.
415
416    // Initially make sure we have at least 192 KB for the sniff
417    // to complete without blocking.
418    static const size_t kMinBytesForSniffing = 192 * 1024;
419    static const size_t kDefaultMetaSize = 200000;
420
421    status_t finalStatus;
422
423    size_t cachedDataRemaining =
424            mCachedSource->approxDataRemaining(&finalStatus);
425
426    if (finalStatus != OK || (mMetaDataSize >= 0
427            && (off64_t)cachedDataRemaining >= mMetaDataSize)) {
428        ALOGV("stop caching, status %d, "
429                "metaDataSize %lld, cachedDataRemaining %zu",
430                finalStatus, mMetaDataSize, cachedDataRemaining);
431        return OK;
432    }
433
434    ALOGV("now cached %zu bytes of data", cachedDataRemaining);
435
436    if (mMetaDataSize < 0
437            && cachedDataRemaining >= kMinBytesForSniffing) {
438        String8 tmp;
439        float confidence;
440        sp<AMessage> meta;
441        if (!mCachedSource->sniff(&tmp, &confidence, &meta)) {
442            return UNKNOWN_ERROR;
443        }
444
445        // We successfully identified the file's extractor to
446        // be, remember this mime type so we don't have to
447        // sniff it again when we call MediaExtractor::Create()
448        mSniffedMIME = tmp.string();
449
450        if (meta == NULL
451                || !meta->findInt64("meta-data-size",
452                        reinterpret_cast<int64_t*>(&mMetaDataSize))) {
453            mMetaDataSize = kDefaultMetaSize;
454        }
455
456        if (mMetaDataSize < 0ll) {
457            ALOGE("invalid metaDataSize = %lld bytes", mMetaDataSize);
458            return UNKNOWN_ERROR;
459        }
460    }
461
462    return -EAGAIN;
463}
464
465void NuPlayer::GenericSource::start() {
466    ALOGI("start");
467
468    mStopRead = false;
469    if (mAudioTrack.mSource != NULL) {
470        CHECK_EQ(mAudioTrack.mSource->start(), (status_t)OK);
471
472        postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
473    }
474
475    if (mVideoTrack.mSource != NULL) {
476        CHECK_EQ(mVideoTrack.mSource->start(), (status_t)OK);
477
478        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
479    }
480
481    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
482    mStarted = true;
483}
484
485void NuPlayer::GenericSource::stop() {
486    // nothing to do, just account for DRM playback status
487    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
488    mStarted = false;
489    if (mIsWidevine) {
490        // For a widevine source we need to prevent any further reads.
491        sp<AMessage> msg = new AMessage(kWhatStopWidevine, id());
492        sp<AMessage> response;
493        (void) msg->postAndAwaitResponse(&response);
494    }
495}
496
497void NuPlayer::GenericSource::pause() {
498    // nothing to do, just account for DRM playback status
499    setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
500    mStarted = false;
501}
502
503void NuPlayer::GenericSource::resume() {
504    // nothing to do, just account for DRM playback status
505    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
506    mStarted = true;
507}
508
509void NuPlayer::GenericSource::disconnect() {
510    sp<DataSource> dataSource, httpSource;
511    {
512        Mutex::Autolock _l(mDisconnectLock);
513        dataSource = mDataSource;
514        httpSource = mHttpSource;
515    }
516
517    if (dataSource != NULL) {
518        // disconnect data source
519        if (dataSource->flags() & DataSource::kIsCachingDataSource) {
520            static_cast<NuCachedSource2 *>(dataSource.get())->disconnect();
521        }
522    } else if (httpSource != NULL) {
523        static_cast<HTTPBase *>(httpSource.get())->disconnect();
524    }
525}
526
527void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
528    if (mDecryptHandle != NULL) {
529        mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
530    }
531    mSubtitleTrack.mPackets = new AnotherPacketSource(NULL);
532    mTimedTextTrack.mPackets = new AnotherPacketSource(NULL);
533}
534
535status_t NuPlayer::GenericSource::feedMoreTSData() {
536    return OK;
537}
538
539void NuPlayer::GenericSource::schedulePollBuffering() {
540    sp<AMessage> msg = new AMessage(kWhatPollBuffering, id());
541    msg->setInt32("generation", mPollBufferingGeneration);
542    msg->post(1000000ll);
543}
544
545void NuPlayer::GenericSource::cancelPollBuffering() {
546    ++mPollBufferingGeneration;
547}
548
549void NuPlayer::GenericSource::notifyBufferingUpdate(int percentage) {
550    sp<AMessage> msg = dupNotify();
551    msg->setInt32("what", kWhatBufferingUpdate);
552    msg->setInt32("percentage", percentage);
553    msg->post();
554}
555
556void NuPlayer::GenericSource::onPollBuffering() {
557    status_t finalStatus = UNKNOWN_ERROR;
558    int64_t cachedDurationUs = 0ll;
559
560    if (mCachedSource != NULL) {
561        size_t cachedDataRemaining =
562                mCachedSource->approxDataRemaining(&finalStatus);
563
564        if (finalStatus == OK) {
565            off64_t size;
566            int64_t bitrate = 0ll;
567            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
568                bitrate = size * 8000000ll / mDurationUs;
569            } else if (mBitrate > 0) {
570                bitrate = mBitrate;
571            }
572            if (bitrate > 0) {
573                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
574            }
575        }
576    } else if (mWVMExtractor != NULL) {
577        cachedDurationUs
578            = mWVMExtractor->getCachedDurationUs(&finalStatus);
579    }
580
581    if (finalStatus == ERROR_END_OF_STREAM) {
582        notifyBufferingUpdate(100);
583        cancelPollBuffering();
584        return;
585    } else if (cachedDurationUs > 0ll && mDurationUs > 0ll) {
586        int percentage = 100.0 * cachedDurationUs / mDurationUs;
587        if (percentage > 100) {
588            percentage = 100;
589        }
590
591        notifyBufferingUpdate(percentage);
592    }
593
594    schedulePollBuffering();
595}
596
597
598void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
599    switch (msg->what()) {
600      case kWhatPrepareAsync:
601      {
602          onPrepareAsync();
603          break;
604      }
605      case kWhatFetchSubtitleData:
606      {
607          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
608                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
609          break;
610      }
611
612      case kWhatFetchTimedTextData:
613      {
614          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
615                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
616          break;
617      }
618
619      case kWhatSendSubtitleData:
620      {
621          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
622                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
623          break;
624      }
625
626      case kWhatSendTimedTextData:
627      {
628          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
629                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
630          break;
631      }
632
633      case kWhatChangeAVSource:
634      {
635          int32_t trackIndex;
636          CHECK(msg->findInt32("trackIndex", &trackIndex));
637          const sp<MediaSource> source = mSources.itemAt(trackIndex);
638
639          Track* track;
640          const char *mime;
641          media_track_type trackType, counterpartType;
642          sp<MetaData> meta = source->getFormat();
643          meta->findCString(kKeyMIMEType, &mime);
644          if (!strncasecmp(mime, "audio/", 6)) {
645              track = &mAudioTrack;
646              trackType = MEDIA_TRACK_TYPE_AUDIO;
647              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
648          } else {
649              CHECK(!strncasecmp(mime, "video/", 6));
650              track = &mVideoTrack;
651              trackType = MEDIA_TRACK_TYPE_VIDEO;
652              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
653          }
654
655
656          if (track->mSource != NULL) {
657              track->mSource->stop();
658          }
659          track->mSource = source;
660          track->mSource->start();
661          track->mIndex = trackIndex;
662
663          status_t avail;
664          if (!track->mPackets->hasBufferAvailable(&avail)) {
665              // sync from other source
666              TRESPASS();
667              break;
668          }
669
670          int64_t timeUs, actualTimeUs;
671          const bool formatChange = true;
672          sp<AMessage> latestMeta = track->mPackets->getLatestEnqueuedMeta();
673          CHECK(latestMeta != NULL && latestMeta->findInt64("timeUs", &timeUs));
674          readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
675          readBuffer(counterpartType, -1, NULL, formatChange);
676          ALOGV("timeUs %lld actualTimeUs %lld", timeUs, actualTimeUs);
677
678          break;
679      }
680      case kWhatPollBuffering:
681      {
682          int32_t generation;
683          CHECK(msg->findInt32("generation", &generation));
684          if (generation == mPollBufferingGeneration) {
685              onPollBuffering();
686          }
687          break;
688      }
689
690      case kWhatGetFormat:
691      {
692          onGetFormatMeta(msg);
693          break;
694      }
695
696      case kWhatGetSelectedTrack:
697      {
698          onGetSelectedTrack(msg);
699          break;
700      }
701
702      case kWhatSelectTrack:
703      {
704          onSelectTrack(msg);
705          break;
706      }
707
708      case kWhatSeek:
709      {
710          onSeek(msg);
711          break;
712      }
713
714      case kWhatReadBuffer:
715      {
716          onReadBuffer(msg);
717          break;
718      }
719
720      case kWhatStopWidevine:
721      {
722          // mStopRead is only used for Widevine to prevent the video source
723          // from being read while the associated video decoder is shutting down.
724          mStopRead = true;
725          if (mVideoTrack.mSource != NULL) {
726              mVideoTrack.mPackets->clear();
727          }
728          sp<AMessage> response = new AMessage;
729          uint32_t replyID;
730          CHECK(msg->senderAwaitsResponse(&replyID));
731          response->postReply(replyID);
732          break;
733      }
734      default:
735          Source::onMessageReceived(msg);
736          break;
737    }
738}
739
740void NuPlayer::GenericSource::fetchTextData(
741        uint32_t sendWhat,
742        media_track_type type,
743        int32_t curGen,
744        sp<AnotherPacketSource> packets,
745        sp<AMessage> msg) {
746    int32_t msgGeneration;
747    CHECK(msg->findInt32("generation", &msgGeneration));
748    if (msgGeneration != curGen) {
749        // stale
750        return;
751    }
752
753    int32_t avail;
754    if (packets->hasBufferAvailable(&avail)) {
755        return;
756    }
757
758    int64_t timeUs;
759    CHECK(msg->findInt64("timeUs", &timeUs));
760
761    int64_t subTimeUs;
762    readBuffer(type, timeUs, &subTimeUs);
763
764    int64_t delayUs = subTimeUs - timeUs;
765    if (msg->what() == kWhatFetchSubtitleData) {
766        const int64_t oneSecUs = 1000000ll;
767        delayUs -= oneSecUs;
768    }
769    sp<AMessage> msg2 = new AMessage(sendWhat, id());
770    msg2->setInt32("generation", msgGeneration);
771    msg2->post(delayUs < 0 ? 0 : delayUs);
772}
773
774void NuPlayer::GenericSource::sendTextData(
775        uint32_t what,
776        media_track_type type,
777        int32_t curGen,
778        sp<AnotherPacketSource> packets,
779        sp<AMessage> msg) {
780    int32_t msgGeneration;
781    CHECK(msg->findInt32("generation", &msgGeneration));
782    if (msgGeneration != curGen) {
783        // stale
784        return;
785    }
786
787    int64_t subTimeUs;
788    if (packets->nextBufferTime(&subTimeUs) != OK) {
789        return;
790    }
791
792    int64_t nextSubTimeUs;
793    readBuffer(type, -1, &nextSubTimeUs);
794
795    sp<ABuffer> buffer;
796    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
797    if (dequeueStatus == OK) {
798        sp<AMessage> notify = dupNotify();
799        notify->setInt32("what", what);
800        notify->setBuffer("buffer", buffer);
801        notify->post();
802
803        const int64_t delayUs = nextSubTimeUs - subTimeUs;
804        msg->post(delayUs < 0 ? 0 : delayUs);
805    }
806}
807
808sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
809    sp<AMessage> msg = new AMessage(kWhatGetFormat, id());
810    msg->setInt32("audio", audio);
811
812    sp<AMessage> response;
813    void *format;
814    status_t err = msg->postAndAwaitResponse(&response);
815    if (err == OK && response != NULL) {
816        CHECK(response->findPointer("format", &format));
817        return (MetaData *)format;
818    } else {
819        return NULL;
820    }
821}
822
823void NuPlayer::GenericSource::onGetFormatMeta(sp<AMessage> msg) const {
824    int32_t audio;
825    CHECK(msg->findInt32("audio", &audio));
826
827    sp<AMessage> response = new AMessage;
828    sp<MetaData> format = doGetFormatMeta(audio);
829    response->setPointer("format", format.get());
830
831    uint32_t replyID;
832    CHECK(msg->senderAwaitsResponse(&replyID));
833    response->postReply(replyID);
834}
835
836sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
837    sp<MediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
838
839    if (source == NULL) {
840        return NULL;
841    }
842
843    return source->getFormat();
844}
845
846status_t NuPlayer::GenericSource::dequeueAccessUnit(
847        bool audio, sp<ABuffer> *accessUnit) {
848    Track *track = audio ? &mAudioTrack : &mVideoTrack;
849
850    if (track->mSource == NULL) {
851        return -EWOULDBLOCK;
852    }
853
854    if (mIsWidevine && !audio) {
855        // try to read a buffer as we may not have been able to the last time
856        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
857    }
858
859    status_t finalResult;
860    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
861        return (finalResult == OK ? -EWOULDBLOCK : finalResult);
862    }
863
864    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
865
866    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
867        postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
868    }
869
870    if (result != OK) {
871        if (mSubtitleTrack.mSource != NULL) {
872            mSubtitleTrack.mPackets->clear();
873            mFetchSubtitleDataGeneration++;
874        }
875        if (mTimedTextTrack.mSource != NULL) {
876            mTimedTextTrack.mPackets->clear();
877            mFetchTimedTextDataGeneration++;
878        }
879        return result;
880    }
881
882    int64_t timeUs;
883    status_t eosResult; // ignored
884    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
885
886    if (mSubtitleTrack.mSource != NULL
887            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
888        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
889        msg->setInt64("timeUs", timeUs);
890        msg->setInt32("generation", mFetchSubtitleDataGeneration);
891        msg->post();
892    }
893
894    if (mTimedTextTrack.mSource != NULL
895            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
896        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
897        msg->setInt64("timeUs", timeUs);
898        msg->setInt32("generation", mFetchTimedTextDataGeneration);
899        msg->post();
900    }
901
902    return result;
903}
904
905status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
906    *durationUs = mDurationUs;
907    return OK;
908}
909
910size_t NuPlayer::GenericSource::getTrackCount() const {
911    return mSources.size();
912}
913
914sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
915    size_t trackCount = mSources.size();
916    if (trackIndex >= trackCount) {
917        return NULL;
918    }
919
920    sp<AMessage> format = new AMessage();
921    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
922
923    const char *mime;
924    CHECK(meta->findCString(kKeyMIMEType, &mime));
925
926    int32_t trackType;
927    if (!strncasecmp(mime, "video/", 6)) {
928        trackType = MEDIA_TRACK_TYPE_VIDEO;
929    } else if (!strncasecmp(mime, "audio/", 6)) {
930        trackType = MEDIA_TRACK_TYPE_AUDIO;
931    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
932        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
933    } else {
934        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
935    }
936    format->setInt32("type", trackType);
937
938    const char *lang;
939    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
940        lang = "und";
941    }
942    format->setString("language", lang);
943
944    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
945        format->setString("mime", mime);
946
947        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
948        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
949        meta->findInt32(kKeyTrackIsDefault, &isDefault);
950        meta->findInt32(kKeyTrackIsForced, &isForced);
951
952        format->setInt32("auto", !!isAutoselect);
953        format->setInt32("default", !!isDefault);
954        format->setInt32("forced", !!isForced);
955    }
956
957    return format;
958}
959
960ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
961    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, id());
962    msg->setInt32("type", type);
963
964    sp<AMessage> response;
965    int32_t index;
966    status_t err = msg->postAndAwaitResponse(&response);
967    if (err == OK && response != NULL) {
968        CHECK(response->findInt32("index", &index));
969        return index;
970    } else {
971        return -1;
972    }
973}
974
975void NuPlayer::GenericSource::onGetSelectedTrack(sp<AMessage> msg) const {
976    int32_t tmpType;
977    CHECK(msg->findInt32("type", &tmpType));
978    media_track_type type = (media_track_type)tmpType;
979
980    sp<AMessage> response = new AMessage;
981    ssize_t index = doGetSelectedTrack(type);
982    response->setInt32("index", index);
983
984    uint32_t replyID;
985    CHECK(msg->senderAwaitsResponse(&replyID));
986    response->postReply(replyID);
987}
988
989ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
990    const Track *track = NULL;
991    switch (type) {
992    case MEDIA_TRACK_TYPE_VIDEO:
993        track = &mVideoTrack;
994        break;
995    case MEDIA_TRACK_TYPE_AUDIO:
996        track = &mAudioTrack;
997        break;
998    case MEDIA_TRACK_TYPE_TIMEDTEXT:
999        track = &mTimedTextTrack;
1000        break;
1001    case MEDIA_TRACK_TYPE_SUBTITLE:
1002        track = &mSubtitleTrack;
1003        break;
1004    default:
1005        break;
1006    }
1007
1008    if (track != NULL && track->mSource != NULL) {
1009        return track->mIndex;
1010    }
1011
1012    return -1;
1013}
1014
1015status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select) {
1016    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
1017    sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
1018    msg->setInt32("trackIndex", trackIndex);
1019    msg->setInt32("select", select);
1020
1021    sp<AMessage> response;
1022    status_t err = msg->postAndAwaitResponse(&response);
1023    if (err == OK && response != NULL) {
1024        CHECK(response->findInt32("err", &err));
1025    }
1026
1027    return err;
1028}
1029
1030void NuPlayer::GenericSource::onSelectTrack(sp<AMessage> msg) {
1031    int32_t trackIndex, select;
1032    CHECK(msg->findInt32("trackIndex", &trackIndex));
1033    CHECK(msg->findInt32("select", &select));
1034
1035    sp<AMessage> response = new AMessage;
1036    status_t err = doSelectTrack(trackIndex, select);
1037    response->setInt32("err", err);
1038
1039    uint32_t replyID;
1040    CHECK(msg->senderAwaitsResponse(&replyID));
1041    response->postReply(replyID);
1042}
1043
1044status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select) {
1045    if (trackIndex >= mSources.size()) {
1046        return BAD_INDEX;
1047    }
1048
1049    if (!select) {
1050        Track* track = NULL;
1051        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
1052            track = &mSubtitleTrack;
1053            mFetchSubtitleDataGeneration++;
1054        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
1055            track = &mTimedTextTrack;
1056            mFetchTimedTextDataGeneration++;
1057        }
1058        if (track == NULL) {
1059            return INVALID_OPERATION;
1060        }
1061        track->mSource->stop();
1062        track->mSource = NULL;
1063        track->mPackets->clear();
1064        return OK;
1065    }
1066
1067    const sp<MediaSource> source = mSources.itemAt(trackIndex);
1068    sp<MetaData> meta = source->getFormat();
1069    const char *mime;
1070    CHECK(meta->findCString(kKeyMIMEType, &mime));
1071    if (!strncasecmp(mime, "text/", 5)) {
1072        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
1073        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
1074        if (track->mSource != NULL && track->mIndex == trackIndex) {
1075            return OK;
1076        }
1077        track->mIndex = trackIndex;
1078        if (track->mSource != NULL) {
1079            track->mSource->stop();
1080        }
1081        track->mSource = mSources.itemAt(trackIndex);
1082        track->mSource->start();
1083        if (track->mPackets == NULL) {
1084            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
1085        } else {
1086            track->mPackets->clear();
1087            track->mPackets->setFormat(track->mSource->getFormat());
1088
1089        }
1090
1091        if (isSubtitle) {
1092            mFetchSubtitleDataGeneration++;
1093        } else {
1094            mFetchTimedTextDataGeneration++;
1095        }
1096
1097        return OK;
1098    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
1099        bool audio = !strncasecmp(mime, "audio/", 6);
1100        Track *track = audio ? &mAudioTrack : &mVideoTrack;
1101        if (track->mSource != NULL && track->mIndex == trackIndex) {
1102            return OK;
1103        }
1104
1105        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, id());
1106        msg->setInt32("trackIndex", trackIndex);
1107        msg->post();
1108        return OK;
1109    }
1110
1111    return INVALID_OPERATION;
1112}
1113
1114status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs) {
1115    sp<AMessage> msg = new AMessage(kWhatSeek, id());
1116    msg->setInt64("seekTimeUs", seekTimeUs);
1117
1118    sp<AMessage> response;
1119    status_t err = msg->postAndAwaitResponse(&response);
1120    if (err == OK && response != NULL) {
1121        CHECK(response->findInt32("err", &err));
1122    }
1123
1124    return err;
1125}
1126
1127void NuPlayer::GenericSource::onSeek(sp<AMessage> msg) {
1128    int64_t seekTimeUs;
1129    CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1130
1131    sp<AMessage> response = new AMessage;
1132    status_t err = doSeek(seekTimeUs);
1133    response->setInt32("err", err);
1134
1135    uint32_t replyID;
1136    CHECK(msg->senderAwaitsResponse(&replyID));
1137    response->postReply(replyID);
1138}
1139
1140status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs) {
1141    // If the Widevine source is stopped, do not attempt to read any
1142    // more buffers.
1143    if (mStopRead) {
1144        return INVALID_OPERATION;
1145    }
1146    if (mVideoTrack.mSource != NULL) {
1147        int64_t actualTimeUs;
1148        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, &actualTimeUs);
1149
1150        seekTimeUs = actualTimeUs;
1151    }
1152
1153    if (mAudioTrack.mSource != NULL) {
1154        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
1155    }
1156
1157    setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
1158    if (!mStarted) {
1159        setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
1160    }
1161    return OK;
1162}
1163
1164sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
1165        MediaBuffer* mb,
1166        media_track_type trackType,
1167        int64_t *actualTimeUs) {
1168    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
1169    size_t outLength = mb->range_length();
1170
1171    if (audio && mAudioIsVorbis) {
1172        outLength += sizeof(int32_t);
1173    }
1174
1175    sp<ABuffer> ab;
1176    if (mIsWidevine && !audio) {
1177        // data is already provided in the buffer
1178        ab = new ABuffer(NULL, mb->range_length());
1179        mb->add_ref();
1180        ab->setMediaBufferBase(mb);
1181    } else {
1182        ab = new ABuffer(outLength);
1183        memcpy(ab->data(),
1184               (const uint8_t *)mb->data() + mb->range_offset(),
1185               mb->range_length());
1186    }
1187
1188    if (audio && mAudioIsVorbis) {
1189        int32_t numPageSamples;
1190        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
1191            numPageSamples = -1;
1192        }
1193
1194        uint8_t* abEnd = ab->data() + mb->range_length();
1195        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
1196    }
1197
1198    sp<AMessage> meta = ab->meta();
1199
1200    int64_t timeUs;
1201    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
1202    meta->setInt64("timeUs", timeUs);
1203
1204    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
1205        const char *mime;
1206        CHECK(mTimedTextTrack.mSource != NULL
1207                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
1208        meta->setString("mime", mime);
1209    }
1210
1211    int64_t durationUs;
1212    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
1213        meta->setInt64("durationUs", durationUs);
1214    }
1215
1216    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
1217        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
1218    }
1219
1220    if (actualTimeUs) {
1221        *actualTimeUs = timeUs;
1222    }
1223
1224    mb->release();
1225    mb = NULL;
1226
1227    return ab;
1228}
1229
1230void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
1231    Mutex::Autolock _l(mReadBufferLock);
1232
1233    if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
1234        mPendingReadBufferTypes |= (1 << trackType);
1235        sp<AMessage> msg = new AMessage(kWhatReadBuffer, id());
1236        msg->setInt32("trackType", trackType);
1237        msg->post();
1238    }
1239}
1240
1241void NuPlayer::GenericSource::onReadBuffer(sp<AMessage> msg) {
1242    int32_t tmpType;
1243    CHECK(msg->findInt32("trackType", &tmpType));
1244    media_track_type trackType = (media_track_type)tmpType;
1245    {
1246        // only protect the variable change, as readBuffer may
1247        // take considerable time.  This may result in one extra
1248        // read being processed, but that is benign.
1249        Mutex::Autolock _l(mReadBufferLock);
1250        mPendingReadBufferTypes &= ~(1 << trackType);
1251    }
1252    readBuffer(trackType);
1253}
1254
1255void NuPlayer::GenericSource::readBuffer(
1256        media_track_type trackType, int64_t seekTimeUs, int64_t *actualTimeUs, bool formatChange) {
1257    // Do not read data if Widevine source is stopped
1258    if (mStopRead) {
1259        return;
1260    }
1261    Track *track;
1262    size_t maxBuffers = 1;
1263    switch (trackType) {
1264        case MEDIA_TRACK_TYPE_VIDEO:
1265            track = &mVideoTrack;
1266            if (mIsWidevine) {
1267                maxBuffers = 2;
1268            }
1269            break;
1270        case MEDIA_TRACK_TYPE_AUDIO:
1271            track = &mAudioTrack;
1272            if (mIsWidevine) {
1273                maxBuffers = 8;
1274            } else {
1275                maxBuffers = 64;
1276            }
1277            break;
1278        case MEDIA_TRACK_TYPE_SUBTITLE:
1279            track = &mSubtitleTrack;
1280            break;
1281        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1282            track = &mTimedTextTrack;
1283            break;
1284        default:
1285            TRESPASS();
1286    }
1287
1288    if (track->mSource == NULL) {
1289        return;
1290    }
1291
1292    if (actualTimeUs) {
1293        *actualTimeUs = seekTimeUs;
1294    }
1295
1296    MediaSource::ReadOptions options;
1297
1298    bool seeking = false;
1299
1300    if (seekTimeUs >= 0) {
1301        options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
1302        seeking = true;
1303    }
1304
1305    if (mIsWidevine && trackType != MEDIA_TRACK_TYPE_AUDIO) {
1306        options.setNonBlocking();
1307    }
1308
1309    for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
1310        MediaBuffer *mbuf;
1311        status_t err = track->mSource->read(&mbuf, &options);
1312
1313        options.clearSeekTo();
1314
1315        if (err == OK) {
1316            int64_t timeUs;
1317            CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs));
1318            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1319                mAudioTimeUs = timeUs;
1320            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1321                mVideoTimeUs = timeUs;
1322            }
1323
1324            // formatChange && seeking: track whose source is changed during selection
1325            // formatChange && !seeking: track whose source is not changed during selection
1326            // !formatChange: normal seek
1327            if ((seeking || formatChange)
1328                    && (trackType == MEDIA_TRACK_TYPE_AUDIO
1329                    || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1330                ATSParser::DiscontinuityType type = formatChange
1331                        ? (seeking
1332                                ? ATSParser::DISCONTINUITY_FORMATCHANGE
1333                                : ATSParser::DISCONTINUITY_NONE)
1334                        : ATSParser::DISCONTINUITY_SEEK;
1335                track->mPackets->queueDiscontinuity( type, NULL, true /* discard */);
1336            }
1337
1338            sp<ABuffer> buffer = mediaBufferToABuffer(mbuf, trackType, actualTimeUs);
1339            track->mPackets->queueAccessUnit(buffer);
1340            formatChange = false;
1341            seeking = false;
1342            ++numBuffers;
1343        } else if (err == WOULD_BLOCK) {
1344            break;
1345        } else if (err == INFO_FORMAT_CHANGED) {
1346#if 0
1347            track->mPackets->queueDiscontinuity(
1348                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1349                    NULL,
1350                    false /* discard */);
1351#endif
1352        } else {
1353            track->mPackets->signalEOS(err);
1354            break;
1355        }
1356    }
1357}
1358
1359}  // namespace android
1360