GenericSource.cpp revision 09c291c838bc74bb7c10c22f7232abb946cad8ff 
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                mDecryptHandle = NULL;
385                mDrmManagerClient = NULL;
386                mCachedSource.clear();
387                mHttpSource.clear();
388            }
389        }
390
391        cancelPollBuffering();
392    }
393    notifyPrepared(err);
394}
395
396status_t NuPlayer::GenericSource::prefillCacheIfNecessary() {
397    CHECK(mDataSource != NULL);
398
399    if (mCachedSource == NULL) {
400        // no prefill if the data source is not cached
401        return OK;
402    }
403
404    // We're not doing this for streams that appear to be audio-only
405    // streams to ensure that even low bandwidth streams start
406    // playing back fairly instantly.
407    if (!strncasecmp(mContentType.string(), "audio/", 6)) {
408        return OK;
409    }
410
411    // We're going to prefill the cache before trying to instantiate
412    // the extractor below, as the latter is an operation that otherwise
413    // could block on the datasource for a significant amount of time.
414    // During that time we'd be unable to abort the preparation phase
415    // without this prefill.
416
417    // Initially make sure we have at least 192 KB for the sniff
418    // to complete without blocking.
419    static const size_t kMinBytesForSniffing = 192 * 1024;
420    static const size_t kDefaultMetaSize = 200000;
421
422    status_t finalStatus;
423
424    size_t cachedDataRemaining =
425            mCachedSource->approxDataRemaining(&finalStatus);
426
427    if (finalStatus != OK || (mMetaDataSize >= 0
428            && (off64_t)cachedDataRemaining >= mMetaDataSize)) {
429        ALOGV("stop caching, status %d, "
430                "metaDataSize %lld, cachedDataRemaining %zu",
431                finalStatus, mMetaDataSize, cachedDataRemaining);
432        return OK;
433    }
434
435    ALOGV("now cached %zu bytes of data", cachedDataRemaining);
436
437    if (mMetaDataSize < 0
438            && cachedDataRemaining >= kMinBytesForSniffing) {
439        String8 tmp;
440        float confidence;
441        sp<AMessage> meta;
442        if (!mCachedSource->sniff(&tmp, &confidence, &meta)) {
443            return UNKNOWN_ERROR;
444        }
445
446        // We successfully identified the file's extractor to
447        // be, remember this mime type so we don't have to
448        // sniff it again when we call MediaExtractor::Create()
449        mSniffedMIME = tmp.string();
450
451        if (meta == NULL
452                || !meta->findInt64("meta-data-size",
453                        reinterpret_cast<int64_t*>(&mMetaDataSize))) {
454            mMetaDataSize = kDefaultMetaSize;
455        }
456
457        if (mMetaDataSize < 0ll) {
458            ALOGE("invalid metaDataSize = %lld bytes", mMetaDataSize);
459            return UNKNOWN_ERROR;
460        }
461    }
462
463    return -EAGAIN;
464}
465
466void NuPlayer::GenericSource::start() {
467    ALOGI("start");
468
469    mStopRead = false;
470    if (mAudioTrack.mSource != NULL) {
471        CHECK_EQ(mAudioTrack.mSource->start(), (status_t)OK);
472
473        postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
474    }
475
476    if (mVideoTrack.mSource != NULL) {
477        CHECK_EQ(mVideoTrack.mSource->start(), (status_t)OK);
478
479        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
480    }
481
482    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
483    mStarted = true;
484}
485
486void NuPlayer::GenericSource::stop() {
487    // nothing to do, just account for DRM playback status
488    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
489    mStarted = false;
490    if (mIsWidevine) {
491        // For a widevine source we need to prevent any further reads.
492        sp<AMessage> msg = new AMessage(kWhatStopWidevine, id());
493        sp<AMessage> response;
494        (void) msg->postAndAwaitResponse(&response);
495    }
496}
497
498void NuPlayer::GenericSource::pause() {
499    // nothing to do, just account for DRM playback status
500    setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
501    mStarted = false;
502}
503
504void NuPlayer::GenericSource::resume() {
505    // nothing to do, just account for DRM playback status
506    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
507    mStarted = true;
508}
509
510void NuPlayer::GenericSource::disconnect() {
511    sp<DataSource> dataSource, httpSource;
512    {
513        Mutex::Autolock _l(mDisconnectLock);
514        dataSource = mDataSource;
515        httpSource = mHttpSource;
516    }
517
518    if (dataSource != NULL) {
519        // disconnect data source
520        if (dataSource->flags() & DataSource::kIsCachingDataSource) {
521            static_cast<NuCachedSource2 *>(dataSource.get())->disconnect();
522        }
523    } else if (httpSource != NULL) {
524        static_cast<HTTPBase *>(httpSource.get())->disconnect();
525    }
526}
527
528void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
529    if (mDecryptHandle != NULL) {
530        mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
531    }
532    mSubtitleTrack.mPackets = new AnotherPacketSource(NULL);
533    mTimedTextTrack.mPackets = new AnotherPacketSource(NULL);
534}
535
536status_t NuPlayer::GenericSource::feedMoreTSData() {
537    return OK;
538}
539
540void NuPlayer::GenericSource::schedulePollBuffering() {
541    sp<AMessage> msg = new AMessage(kWhatPollBuffering, id());
542    msg->setInt32("generation", mPollBufferingGeneration);
543    msg->post(1000000ll);
544}
545
546void NuPlayer::GenericSource::cancelPollBuffering() {
547    ++mPollBufferingGeneration;
548}
549
550void NuPlayer::GenericSource::notifyBufferingUpdate(int percentage) {
551    sp<AMessage> msg = dupNotify();
552    msg->setInt32("what", kWhatBufferingUpdate);
553    msg->setInt32("percentage", percentage);
554    msg->post();
555}
556
557void NuPlayer::GenericSource::onPollBuffering() {
558    status_t finalStatus = UNKNOWN_ERROR;
559    int64_t cachedDurationUs = 0ll;
560
561    if (mCachedSource != NULL) {
562        size_t cachedDataRemaining =
563                mCachedSource->approxDataRemaining(&finalStatus);
564
565        if (finalStatus == OK) {
566            off64_t size;
567            int64_t bitrate = 0ll;
568            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
569                bitrate = size * 8000000ll / mDurationUs;
570            } else if (mBitrate > 0) {
571                bitrate = mBitrate;
572            }
573            if (bitrate > 0) {
574                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
575            }
576        }
577    } else if (mWVMExtractor != NULL) {
578        cachedDurationUs
579            = mWVMExtractor->getCachedDurationUs(&finalStatus);
580    }
581
582    if (finalStatus == ERROR_END_OF_STREAM) {
583        notifyBufferingUpdate(100);
584        cancelPollBuffering();
585        return;
586    } else if (cachedDurationUs > 0ll && mDurationUs > 0ll) {
587        int percentage = 100.0 * cachedDurationUs / mDurationUs;
588        if (percentage > 100) {
589            percentage = 100;
590        }
591
592        notifyBufferingUpdate(percentage);
593    }
594
595    schedulePollBuffering();
596}
597
598
599void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
600    switch (msg->what()) {
601      case kWhatPrepareAsync:
602      {
603          onPrepareAsync();
604          break;
605      }
606      case kWhatFetchSubtitleData:
607      {
608          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
609                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
610          break;
611      }
612
613      case kWhatFetchTimedTextData:
614      {
615          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
616                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
617          break;
618      }
619
620      case kWhatSendSubtitleData:
621      {
622          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
623                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
624          break;
625      }
626
627      case kWhatSendTimedTextData:
628      {
629          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
630                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
631          break;
632      }
633
634      case kWhatChangeAVSource:
635      {
636          int32_t trackIndex;
637          CHECK(msg->findInt32("trackIndex", &trackIndex));
638          const sp<MediaSource> source = mSources.itemAt(trackIndex);
639
640          Track* track;
641          const char *mime;
642          media_track_type trackType, counterpartType;
643          sp<MetaData> meta = source->getFormat();
644          meta->findCString(kKeyMIMEType, &mime);
645          if (!strncasecmp(mime, "audio/", 6)) {
646              track = &mAudioTrack;
647              trackType = MEDIA_TRACK_TYPE_AUDIO;
648              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
649          } else {
650              CHECK(!strncasecmp(mime, "video/", 6));
651              track = &mVideoTrack;
652              trackType = MEDIA_TRACK_TYPE_VIDEO;
653              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
654          }
655
656
657          if (track->mSource != NULL) {
658              track->mSource->stop();
659          }
660          track->mSource = source;
661          track->mSource->start();
662          track->mIndex = trackIndex;
663
664          status_t avail;
665          if (!track->mPackets->hasBufferAvailable(&avail)) {
666              // sync from other source
667              TRESPASS();
668              break;
669          }
670
671          int64_t timeUs, actualTimeUs;
672          const bool formatChange = true;
673          sp<AMessage> latestMeta = track->mPackets->getLatestEnqueuedMeta();
674          CHECK(latestMeta != NULL && latestMeta->findInt64("timeUs", &timeUs));
675          readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
676          readBuffer(counterpartType, -1, NULL, formatChange);
677          ALOGV("timeUs %lld actualTimeUs %lld", timeUs, actualTimeUs);
678
679          break;
680      }
681      case kWhatPollBuffering:
682      {
683          int32_t generation;
684          CHECK(msg->findInt32("generation", &generation));
685          if (generation == mPollBufferingGeneration) {
686              onPollBuffering();
687          }
688          break;
689      }
690
691      case kWhatGetFormat:
692      {
693          onGetFormatMeta(msg);
694          break;
695      }
696
697      case kWhatGetSelectedTrack:
698      {
699          onGetSelectedTrack(msg);
700          break;
701      }
702
703      case kWhatSelectTrack:
704      {
705          onSelectTrack(msg);
706          break;
707      }
708
709      case kWhatSeek:
710      {
711          onSeek(msg);
712          break;
713      }
714
715      case kWhatReadBuffer:
716      {
717          onReadBuffer(msg);
718          break;
719      }
720
721      case kWhatStopWidevine:
722      {
723          // mStopRead is only used for Widevine to prevent the video source
724          // from being read while the associated video decoder is shutting down.
725          mStopRead = true;
726          if (mVideoTrack.mSource != NULL) {
727              mVideoTrack.mPackets->clear();
728          }
729          sp<AMessage> response = new AMessage;
730          uint32_t replyID;
731          CHECK(msg->senderAwaitsResponse(&replyID));
732          response->postReply(replyID);
733          break;
734      }
735      default:
736          Source::onMessageReceived(msg);
737          break;
738    }
739}
740
741void NuPlayer::GenericSource::fetchTextData(
742        uint32_t sendWhat,
743        media_track_type type,
744        int32_t curGen,
745        sp<AnotherPacketSource> packets,
746        sp<AMessage> msg) {
747    int32_t msgGeneration;
748    CHECK(msg->findInt32("generation", &msgGeneration));
749    if (msgGeneration != curGen) {
750        // stale
751        return;
752    }
753
754    int32_t avail;
755    if (packets->hasBufferAvailable(&avail)) {
756        return;
757    }
758
759    int64_t timeUs;
760    CHECK(msg->findInt64("timeUs", &timeUs));
761
762    int64_t subTimeUs;
763    readBuffer(type, timeUs, &subTimeUs);
764
765    int64_t delayUs = subTimeUs - timeUs;
766    if (msg->what() == kWhatFetchSubtitleData) {
767        const int64_t oneSecUs = 1000000ll;
768        delayUs -= oneSecUs;
769    }
770    sp<AMessage> msg2 = new AMessage(sendWhat, id());
771    msg2->setInt32("generation", msgGeneration);
772    msg2->post(delayUs < 0 ? 0 : delayUs);
773}
774
775void NuPlayer::GenericSource::sendTextData(
776        uint32_t what,
777        media_track_type type,
778        int32_t curGen,
779        sp<AnotherPacketSource> packets,
780        sp<AMessage> msg) {
781    int32_t msgGeneration;
782    CHECK(msg->findInt32("generation", &msgGeneration));
783    if (msgGeneration != curGen) {
784        // stale
785        return;
786    }
787
788    int64_t subTimeUs;
789    if (packets->nextBufferTime(&subTimeUs) != OK) {
790        return;
791    }
792
793    int64_t nextSubTimeUs;
794    readBuffer(type, -1, &nextSubTimeUs);
795
796    sp<ABuffer> buffer;
797    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
798    if (dequeueStatus == OK) {
799        sp<AMessage> notify = dupNotify();
800        notify->setInt32("what", what);
801        notify->setBuffer("buffer", buffer);
802        notify->post();
803
804        const int64_t delayUs = nextSubTimeUs - subTimeUs;
805        msg->post(delayUs < 0 ? 0 : delayUs);
806    }
807}
808
809sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
810    sp<AMessage> msg = new AMessage(kWhatGetFormat, id());
811    msg->setInt32("audio", audio);
812
813    sp<AMessage> response;
814    void *format;
815    status_t err = msg->postAndAwaitResponse(&response);
816    if (err == OK && response != NULL) {
817        CHECK(response->findPointer("format", &format));
818        return (MetaData *)format;
819    } else {
820        return NULL;
821    }
822}
823
824void NuPlayer::GenericSource::onGetFormatMeta(sp<AMessage> msg) const {
825    int32_t audio;
826    CHECK(msg->findInt32("audio", &audio));
827
828    sp<AMessage> response = new AMessage;
829    sp<MetaData> format = doGetFormatMeta(audio);
830    response->setPointer("format", format.get());
831
832    uint32_t replyID;
833    CHECK(msg->senderAwaitsResponse(&replyID));
834    response->postReply(replyID);
835}
836
837sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
838    sp<MediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
839
840    if (source == NULL) {
841        return NULL;
842    }
843
844    return source->getFormat();
845}
846
847status_t NuPlayer::GenericSource::dequeueAccessUnit(
848        bool audio, sp<ABuffer> *accessUnit) {
849    Track *track = audio ? &mAudioTrack : &mVideoTrack;
850
851    if (track->mSource == NULL) {
852        return -EWOULDBLOCK;
853    }
854
855    if (mIsWidevine && !audio) {
856        // try to read a buffer as we may not have been able to the last time
857        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
858    }
859
860    status_t finalResult;
861    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
862        return (finalResult == OK ? -EWOULDBLOCK : finalResult);
863    }
864
865    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
866
867    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
868        postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
869    }
870
871    if (result != OK) {
872        if (mSubtitleTrack.mSource != NULL) {
873            mSubtitleTrack.mPackets->clear();
874            mFetchSubtitleDataGeneration++;
875        }
876        if (mTimedTextTrack.mSource != NULL) {
877            mTimedTextTrack.mPackets->clear();
878            mFetchTimedTextDataGeneration++;
879        }
880        return result;
881    }
882
883    int64_t timeUs;
884    status_t eosResult; // ignored
885    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
886
887    if (mSubtitleTrack.mSource != NULL
888            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
889        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
890        msg->setInt64("timeUs", timeUs);
891        msg->setInt32("generation", mFetchSubtitleDataGeneration);
892        msg->post();
893    }
894
895    if (mTimedTextTrack.mSource != NULL
896            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
897        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
898        msg->setInt64("timeUs", timeUs);
899        msg->setInt32("generation", mFetchTimedTextDataGeneration);
900        msg->post();
901    }
902
903    return result;
904}
905
906status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
907    *durationUs = mDurationUs;
908    return OK;
909}
910
911size_t NuPlayer::GenericSource::getTrackCount() const {
912    return mSources.size();
913}
914
915sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
916    size_t trackCount = mSources.size();
917    if (trackIndex >= trackCount) {
918        return NULL;
919    }
920
921    sp<AMessage> format = new AMessage();
922    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
923
924    const char *mime;
925    CHECK(meta->findCString(kKeyMIMEType, &mime));
926
927    int32_t trackType;
928    if (!strncasecmp(mime, "video/", 6)) {
929        trackType = MEDIA_TRACK_TYPE_VIDEO;
930    } else if (!strncasecmp(mime, "audio/", 6)) {
931        trackType = MEDIA_TRACK_TYPE_AUDIO;
932    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
933        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
934    } else {
935        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
936    }
937    format->setInt32("type", trackType);
938
939    const char *lang;
940    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
941        lang = "und";
942    }
943    format->setString("language", lang);
944
945    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
946        format->setString("mime", mime);
947
948        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
949        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
950        meta->findInt32(kKeyTrackIsDefault, &isDefault);
951        meta->findInt32(kKeyTrackIsForced, &isForced);
952
953        format->setInt32("auto", !!isAutoselect);
954        format->setInt32("default", !!isDefault);
955        format->setInt32("forced", !!isForced);
956    }
957
958    return format;
959}
960
961ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
962    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, id());
963    msg->setInt32("type", type);
964
965    sp<AMessage> response;
966    int32_t index;
967    status_t err = msg->postAndAwaitResponse(&response);
968    if (err == OK && response != NULL) {
969        CHECK(response->findInt32("index", &index));
970        return index;
971    } else {
972        return -1;
973    }
974}
975
976void NuPlayer::GenericSource::onGetSelectedTrack(sp<AMessage> msg) const {
977    int32_t tmpType;
978    CHECK(msg->findInt32("type", &tmpType));
979    media_track_type type = (media_track_type)tmpType;
980
981    sp<AMessage> response = new AMessage;
982    ssize_t index = doGetSelectedTrack(type);
983    response->setInt32("index", index);
984
985    uint32_t replyID;
986    CHECK(msg->senderAwaitsResponse(&replyID));
987    response->postReply(replyID);
988}
989
990ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
991    const Track *track = NULL;
992    switch (type) {
993    case MEDIA_TRACK_TYPE_VIDEO:
994        track = &mVideoTrack;
995        break;
996    case MEDIA_TRACK_TYPE_AUDIO:
997        track = &mAudioTrack;
998        break;
999    case MEDIA_TRACK_TYPE_TIMEDTEXT:
1000        track = &mTimedTextTrack;
1001        break;
1002    case MEDIA_TRACK_TYPE_SUBTITLE:
1003        track = &mSubtitleTrack;
1004        break;
1005    default:
1006        break;
1007    }
1008
1009    if (track != NULL && track->mSource != NULL) {
1010        return track->mIndex;
1011    }
1012
1013    return -1;
1014}
1015
1016status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select) {
1017    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
1018    sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
1019    msg->setInt32("trackIndex", trackIndex);
1020    msg->setInt32("select", select);
1021
1022    sp<AMessage> response;
1023    status_t err = msg->postAndAwaitResponse(&response);
1024    if (err == OK && response != NULL) {
1025        CHECK(response->findInt32("err", &err));
1026    }
1027
1028    return err;
1029}
1030
1031void NuPlayer::GenericSource::onSelectTrack(sp<AMessage> msg) {
1032    int32_t trackIndex, select;
1033    CHECK(msg->findInt32("trackIndex", &trackIndex));
1034    CHECK(msg->findInt32("select", &select));
1035
1036    sp<AMessage> response = new AMessage;
1037    status_t err = doSelectTrack(trackIndex, select);
1038    response->setInt32("err", err);
1039
1040    uint32_t replyID;
1041    CHECK(msg->senderAwaitsResponse(&replyID));
1042    response->postReply(replyID);
1043}
1044
1045status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select) {
1046    if (trackIndex >= mSources.size()) {
1047        return BAD_INDEX;
1048    }
1049
1050    if (!select) {
1051        Track* track = NULL;
1052        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
1053            track = &mSubtitleTrack;
1054            mFetchSubtitleDataGeneration++;
1055        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
1056            track = &mTimedTextTrack;
1057            mFetchTimedTextDataGeneration++;
1058        }
1059        if (track == NULL) {
1060            return INVALID_OPERATION;
1061        }
1062        track->mSource->stop();
1063        track->mSource = NULL;
1064        track->mPackets->clear();
1065        return OK;
1066    }
1067
1068    const sp<MediaSource> source = mSources.itemAt(trackIndex);
1069    sp<MetaData> meta = source->getFormat();
1070    const char *mime;
1071    CHECK(meta->findCString(kKeyMIMEType, &mime));
1072    if (!strncasecmp(mime, "text/", 5)) {
1073        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
1074        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
1075        if (track->mSource != NULL && track->mIndex == trackIndex) {
1076            return OK;
1077        }
1078        track->mIndex = trackIndex;
1079        if (track->mSource != NULL) {
1080            track->mSource->stop();
1081        }
1082        track->mSource = mSources.itemAt(trackIndex);
1083        track->mSource->start();
1084        if (track->mPackets == NULL) {
1085            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
1086        } else {
1087            track->mPackets->clear();
1088            track->mPackets->setFormat(track->mSource->getFormat());
1089
1090        }
1091
1092        if (isSubtitle) {
1093            mFetchSubtitleDataGeneration++;
1094        } else {
1095            mFetchTimedTextDataGeneration++;
1096        }
1097
1098        return OK;
1099    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
1100        bool audio = !strncasecmp(mime, "audio/", 6);
1101        Track *track = audio ? &mAudioTrack : &mVideoTrack;
1102        if (track->mSource != NULL && track->mIndex == trackIndex) {
1103            return OK;
1104        }
1105
1106        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, id());
1107        msg->setInt32("trackIndex", trackIndex);
1108        msg->post();
1109        return OK;
1110    }
1111
1112    return INVALID_OPERATION;
1113}
1114
1115status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs) {
1116    sp<AMessage> msg = new AMessage(kWhatSeek, id());
1117    msg->setInt64("seekTimeUs", seekTimeUs);
1118
1119    sp<AMessage> response;
1120    status_t err = msg->postAndAwaitResponse(&response);
1121    if (err == OK && response != NULL) {
1122        CHECK(response->findInt32("err", &err));
1123    }
1124
1125    return err;
1126}
1127
1128void NuPlayer::GenericSource::onSeek(sp<AMessage> msg) {
1129    int64_t seekTimeUs;
1130    CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1131
1132    sp<AMessage> response = new AMessage;
1133    status_t err = doSeek(seekTimeUs);
1134    response->setInt32("err", err);
1135
1136    uint32_t replyID;
1137    CHECK(msg->senderAwaitsResponse(&replyID));
1138    response->postReply(replyID);
1139}
1140
1141status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs) {
1142    // If the Widevine source is stopped, do not attempt to read any
1143    // more buffers.
1144    if (mStopRead) {
1145        return INVALID_OPERATION;
1146    }
1147    if (mVideoTrack.mSource != NULL) {
1148        int64_t actualTimeUs;
1149        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, &actualTimeUs);
1150
1151        seekTimeUs = actualTimeUs;
1152    }
1153
1154    if (mAudioTrack.mSource != NULL) {
1155        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
1156    }
1157
1158    setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
1159    if (!mStarted) {
1160        setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
1161    }
1162    return OK;
1163}
1164
1165sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
1166        MediaBuffer* mb,
1167        media_track_type trackType,
1168        int64_t *actualTimeUs) {
1169    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
1170    size_t outLength = mb->range_length();
1171
1172    if (audio && mAudioIsVorbis) {
1173        outLength += sizeof(int32_t);
1174    }
1175
1176    sp<ABuffer> ab;
1177    if (mIsWidevine && !audio) {
1178        // data is already provided in the buffer
1179        ab = new ABuffer(NULL, mb->range_length());
1180        mb->add_ref();
1181        ab->setMediaBufferBase(mb);
1182    } else {
1183        ab = new ABuffer(outLength);
1184        memcpy(ab->data(),
1185               (const uint8_t *)mb->data() + mb->range_offset(),
1186               mb->range_length());
1187    }
1188
1189    if (audio && mAudioIsVorbis) {
1190        int32_t numPageSamples;
1191        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
1192            numPageSamples = -1;
1193        }
1194
1195        uint8_t* abEnd = ab->data() + mb->range_length();
1196        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
1197    }
1198
1199    sp<AMessage> meta = ab->meta();
1200
1201    int64_t timeUs;
1202    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
1203    meta->setInt64("timeUs", timeUs);
1204
1205    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
1206        const char *mime;
1207        CHECK(mTimedTextTrack.mSource != NULL
1208                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
1209        meta->setString("mime", mime);
1210    }
1211
1212    int64_t durationUs;
1213    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
1214        meta->setInt64("durationUs", durationUs);
1215    }
1216
1217    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
1218        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
1219    }
1220
1221    if (actualTimeUs) {
1222        *actualTimeUs = timeUs;
1223    }
1224
1225    mb->release();
1226    mb = NULL;
1227
1228    return ab;
1229}
1230
1231void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
1232    Mutex::Autolock _l(mReadBufferLock);
1233
1234    if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
1235        mPendingReadBufferTypes |= (1 << trackType);
1236        sp<AMessage> msg = new AMessage(kWhatReadBuffer, id());
1237        msg->setInt32("trackType", trackType);
1238        msg->post();
1239    }
1240}
1241
1242void NuPlayer::GenericSource::onReadBuffer(sp<AMessage> msg) {
1243    int32_t tmpType;
1244    CHECK(msg->findInt32("trackType", &tmpType));
1245    media_track_type trackType = (media_track_type)tmpType;
1246    {
1247        // only protect the variable change, as readBuffer may
1248        // take considerable time.  This may result in one extra
1249        // read being processed, but that is benign.
1250        Mutex::Autolock _l(mReadBufferLock);
1251        mPendingReadBufferTypes &= ~(1 << trackType);
1252    }
1253    readBuffer(trackType);
1254}
1255
1256void NuPlayer::GenericSource::readBuffer(
1257        media_track_type trackType, int64_t seekTimeUs, int64_t *actualTimeUs, bool formatChange) {
1258    // Do not read data if Widevine source is stopped
1259    if (mStopRead) {
1260        return;
1261    }
1262    Track *track;
1263    size_t maxBuffers = 1;
1264    switch (trackType) {
1265        case MEDIA_TRACK_TYPE_VIDEO:
1266            track = &mVideoTrack;
1267            if (mIsWidevine) {
1268                maxBuffers = 2;
1269            }
1270            break;
1271        case MEDIA_TRACK_TYPE_AUDIO:
1272            track = &mAudioTrack;
1273            if (mIsWidevine) {
1274                maxBuffers = 8;
1275            } else {
1276                maxBuffers = 64;
1277            }
1278            break;
1279        case MEDIA_TRACK_TYPE_SUBTITLE:
1280            track = &mSubtitleTrack;
1281            break;
1282        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1283            track = &mTimedTextTrack;
1284            break;
1285        default:
1286            TRESPASS();
1287    }
1288
1289    if (track->mSource == NULL) {
1290        return;
1291    }
1292
1293    if (actualTimeUs) {
1294        *actualTimeUs = seekTimeUs;
1295    }
1296
1297    MediaSource::ReadOptions options;
1298
1299    bool seeking = false;
1300
1301    if (seekTimeUs >= 0) {
1302        options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
1303        seeking = true;
1304    }
1305
1306    if (mIsWidevine && trackType != MEDIA_TRACK_TYPE_AUDIO) {
1307        options.setNonBlocking();
1308    }
1309
1310    for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
1311        MediaBuffer *mbuf;
1312        status_t err = track->mSource->read(&mbuf, &options);
1313
1314        options.clearSeekTo();
1315
1316        if (err == OK) {
1317            int64_t timeUs;
1318            CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs));
1319            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1320                mAudioTimeUs = timeUs;
1321            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1322                mVideoTimeUs = timeUs;
1323            }
1324
1325            // formatChange && seeking: track whose source is changed during selection
1326            // formatChange && !seeking: track whose source is not changed during selection
1327            // !formatChange: normal seek
1328            if ((seeking || formatChange)
1329                    && (trackType == MEDIA_TRACK_TYPE_AUDIO
1330                    || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1331                ATSParser::DiscontinuityType type = formatChange
1332                        ? (seeking
1333                                ? ATSParser::DISCONTINUITY_FORMATCHANGE
1334                                : ATSParser::DISCONTINUITY_NONE)
1335                        : ATSParser::DISCONTINUITY_SEEK;
1336                track->mPackets->queueDiscontinuity( type, NULL, true /* discard */);
1337            }
1338
1339            sp<ABuffer> buffer = mediaBufferToABuffer(mbuf, trackType, actualTimeUs);
1340            track->mPackets->queueAccessUnit(buffer);
1341            formatChange = false;
1342            seeking = false;
1343            ++numBuffers;
1344        } else if (err == WOULD_BLOCK) {
1345            break;
1346        } else if (err == INFO_FORMAT_CHANGED) {
1347#if 0
1348            track->mPackets->queueDiscontinuity(
1349                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1350                    NULL,
1351                    false /* discard */);
1352#endif
1353        } else {
1354            track->mPackets->signalEOS(err);
1355            break;
1356        }
1357    }
1358}
1359
1360}  // namespace android
1361