GenericSource.cpp revision f3eb82683a80341f5ac23057aab733a57963cab2 
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                mCachedSource.clear();
385                mHttpSource.clear();
386            }
387        }
388
389        cancelPollBuffering();
390    }
391    notifyPrepared(err);
392}
393
394status_t NuPlayer::GenericSource::prefillCacheIfNecessary() {
395    CHECK(mDataSource != NULL);
396
397    if (mCachedSource == NULL) {
398        // no prefill if the data source is not cached
399        return OK;
400    }
401
402    // We're not doing this for streams that appear to be audio-only
403    // streams to ensure that even low bandwidth streams start
404    // playing back fairly instantly.
405    if (!strncasecmp(mContentType.string(), "audio/", 6)) {
406        return OK;
407    }
408
409    // We're going to prefill the cache before trying to instantiate
410    // the extractor below, as the latter is an operation that otherwise
411    // could block on the datasource for a significant amount of time.
412    // During that time we'd be unable to abort the preparation phase
413    // without this prefill.
414
415    // Initially make sure we have at least 192 KB for the sniff
416    // to complete without blocking.
417    static const size_t kMinBytesForSniffing = 192 * 1024;
418    static const size_t kDefaultMetaSize = 200000;
419
420    status_t finalStatus;
421
422    size_t cachedDataRemaining =
423            mCachedSource->approxDataRemaining(&finalStatus);
424
425    if (finalStatus != OK || (mMetaDataSize >= 0
426            && (off64_t)cachedDataRemaining >= mMetaDataSize)) {
427        ALOGV("stop caching, status %d, "
428                "metaDataSize %lld, cachedDataRemaining %zu",
429                finalStatus, mMetaDataSize, cachedDataRemaining);
430        return OK;
431    }
432
433    ALOGV("now cached %zu bytes of data", cachedDataRemaining);
434
435    if (mMetaDataSize < 0
436            && cachedDataRemaining >= kMinBytesForSniffing) {
437        String8 tmp;
438        float confidence;
439        sp<AMessage> meta;
440        if (!mCachedSource->sniff(&tmp, &confidence, &meta)) {
441            return UNKNOWN_ERROR;
442        }
443
444        // We successfully identified the file's extractor to
445        // be, remember this mime type so we don't have to
446        // sniff it again when we call MediaExtractor::Create()
447        mSniffedMIME = tmp.string();
448
449        if (meta == NULL
450                || !meta->findInt64("meta-data-size",
451                        reinterpret_cast<int64_t*>(&mMetaDataSize))) {
452            mMetaDataSize = kDefaultMetaSize;
453        }
454
455        if (mMetaDataSize < 0ll) {
456            ALOGE("invalid metaDataSize = %lld bytes", mMetaDataSize);
457            return UNKNOWN_ERROR;
458        }
459    }
460
461    return -EAGAIN;
462}
463
464void NuPlayer::GenericSource::start() {
465    ALOGI("start");
466
467    mStopRead = false;
468    if (mAudioTrack.mSource != NULL) {
469        CHECK_EQ(mAudioTrack.mSource->start(), (status_t)OK);
470
471        postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
472    }
473
474    if (mVideoTrack.mSource != NULL) {
475        CHECK_EQ(mVideoTrack.mSource->start(), (status_t)OK);
476
477        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
478    }
479
480    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
481    mStarted = true;
482}
483
484void NuPlayer::GenericSource::stop() {
485    // nothing to do, just account for DRM playback status
486    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
487    mStarted = false;
488    if (mIsWidevine) {
489        // For a widevine source we need to prevent any further reads.
490        sp<AMessage> msg = new AMessage(kWhatStopWidevine, id());
491        sp<AMessage> response;
492        (void) msg->postAndAwaitResponse(&response);
493    }
494}
495
496void NuPlayer::GenericSource::pause() {
497    // nothing to do, just account for DRM playback status
498    setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
499    mStarted = false;
500}
501
502void NuPlayer::GenericSource::resume() {
503    // nothing to do, just account for DRM playback status
504    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
505    mStarted = true;
506}
507
508void NuPlayer::GenericSource::disconnect() {
509    sp<DataSource> dataSource, httpSource;
510    {
511        Mutex::Autolock _l(mDisconnectLock);
512        dataSource = mDataSource;
513        httpSource = mHttpSource;
514    }
515
516    if (dataSource != NULL) {
517        // disconnect data source
518        if (dataSource->flags() & DataSource::kIsCachingDataSource) {
519            static_cast<NuCachedSource2 *>(dataSource.get())->disconnect();
520        }
521    } else if (httpSource != NULL) {
522        static_cast<HTTPBase *>(httpSource.get())->disconnect();
523    }
524}
525
526void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
527    if (mDecryptHandle != NULL) {
528        mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
529    }
530    mSubtitleTrack.mPackets = new AnotherPacketSource(NULL);
531    mTimedTextTrack.mPackets = new AnotherPacketSource(NULL);
532}
533
534status_t NuPlayer::GenericSource::feedMoreTSData() {
535    return OK;
536}
537
538void NuPlayer::GenericSource::schedulePollBuffering() {
539    sp<AMessage> msg = new AMessage(kWhatPollBuffering, id());
540    msg->setInt32("generation", mPollBufferingGeneration);
541    msg->post(1000000ll);
542}
543
544void NuPlayer::GenericSource::cancelPollBuffering() {
545    ++mPollBufferingGeneration;
546}
547
548void NuPlayer::GenericSource::notifyBufferingUpdate(int percentage) {
549    sp<AMessage> msg = dupNotify();
550    msg->setInt32("what", kWhatBufferingUpdate);
551    msg->setInt32("percentage", percentage);
552    msg->post();
553}
554
555void NuPlayer::GenericSource::onPollBuffering() {
556    status_t finalStatus = UNKNOWN_ERROR;
557    int64_t cachedDurationUs = 0ll;
558
559    if (mCachedSource != NULL) {
560        size_t cachedDataRemaining =
561                mCachedSource->approxDataRemaining(&finalStatus);
562
563        if (finalStatus == OK) {
564            off64_t size;
565            int64_t bitrate = 0ll;
566            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
567                bitrate = size * 8000000ll / mDurationUs;
568            } else if (mBitrate > 0) {
569                bitrate = mBitrate;
570            }
571            if (bitrate > 0) {
572                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
573            }
574        }
575    } else if (mWVMExtractor != NULL) {
576        cachedDurationUs
577            = mWVMExtractor->getCachedDurationUs(&finalStatus);
578    }
579
580    if (finalStatus == ERROR_END_OF_STREAM) {
581        notifyBufferingUpdate(100);
582        cancelPollBuffering();
583        return;
584    } else if (cachedDurationUs > 0ll && mDurationUs > 0ll) {
585        int percentage = 100.0 * cachedDurationUs / mDurationUs;
586        if (percentage > 100) {
587            percentage = 100;
588        }
589
590        notifyBufferingUpdate(percentage);
591    }
592
593    schedulePollBuffering();
594}
595
596
597void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
598    switch (msg->what()) {
599      case kWhatPrepareAsync:
600      {
601          onPrepareAsync();
602          break;
603      }
604      case kWhatFetchSubtitleData:
605      {
606          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
607                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
608          break;
609      }
610
611      case kWhatFetchTimedTextData:
612      {
613          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
614                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
615          break;
616      }
617
618      case kWhatSendSubtitleData:
619      {
620          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
621                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
622          break;
623      }
624
625      case kWhatSendTimedTextData:
626      {
627          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
628                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
629          break;
630      }
631
632      case kWhatChangeAVSource:
633      {
634          int32_t trackIndex;
635          CHECK(msg->findInt32("trackIndex", &trackIndex));
636          const sp<MediaSource> source = mSources.itemAt(trackIndex);
637
638          Track* track;
639          const char *mime;
640          media_track_type trackType, counterpartType;
641          sp<MetaData> meta = source->getFormat();
642          meta->findCString(kKeyMIMEType, &mime);
643          if (!strncasecmp(mime, "audio/", 6)) {
644              track = &mAudioTrack;
645              trackType = MEDIA_TRACK_TYPE_AUDIO;
646              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
647          } else {
648              CHECK(!strncasecmp(mime, "video/", 6));
649              track = &mVideoTrack;
650              trackType = MEDIA_TRACK_TYPE_VIDEO;
651              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
652          }
653
654
655          if (track->mSource != NULL) {
656              track->mSource->stop();
657          }
658          track->mSource = source;
659          track->mSource->start();
660          track->mIndex = trackIndex;
661
662          status_t avail;
663          if (!track->mPackets->hasBufferAvailable(&avail)) {
664              // sync from other source
665              TRESPASS();
666              break;
667          }
668
669          int64_t timeUs, actualTimeUs;
670          const bool formatChange = true;
671          sp<AMessage> latestMeta = track->mPackets->getLatestEnqueuedMeta();
672          CHECK(latestMeta != NULL && latestMeta->findInt64("timeUs", &timeUs));
673          readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
674          readBuffer(counterpartType, -1, NULL, formatChange);
675          ALOGV("timeUs %lld actualTimeUs %lld", timeUs, actualTimeUs);
676
677          break;
678      }
679      case kWhatPollBuffering:
680      {
681          int32_t generation;
682          CHECK(msg->findInt32("generation", &generation));
683          if (generation == mPollBufferingGeneration) {
684              onPollBuffering();
685          }
686          break;
687      }
688
689      case kWhatGetFormat:
690      {
691          onGetFormatMeta(msg);
692          break;
693      }
694
695      case kWhatGetSelectedTrack:
696      {
697          onGetSelectedTrack(msg);
698          break;
699      }
700
701      case kWhatSelectTrack:
702      {
703          onSelectTrack(msg);
704          break;
705      }
706
707      case kWhatSeek:
708      {
709          onSeek(msg);
710          break;
711      }
712
713      case kWhatReadBuffer:
714      {
715          onReadBuffer(msg);
716          break;
717      }
718
719      case kWhatStopWidevine:
720      {
721          // mStopRead is only used for Widevine to prevent the video source
722          // from being read while the associated video decoder is shutting down.
723          mStopRead = true;
724          if (mVideoTrack.mSource != NULL) {
725              mVideoTrack.mPackets->clear();
726          }
727          sp<AMessage> response = new AMessage;
728          uint32_t replyID;
729          CHECK(msg->senderAwaitsResponse(&replyID));
730          response->postReply(replyID);
731          break;
732      }
733      default:
734          Source::onMessageReceived(msg);
735          break;
736    }
737}
738
739void NuPlayer::GenericSource::fetchTextData(
740        uint32_t sendWhat,
741        media_track_type type,
742        int32_t curGen,
743        sp<AnotherPacketSource> packets,
744        sp<AMessage> msg) {
745    int32_t msgGeneration;
746    CHECK(msg->findInt32("generation", &msgGeneration));
747    if (msgGeneration != curGen) {
748        // stale
749        return;
750    }
751
752    int32_t avail;
753    if (packets->hasBufferAvailable(&avail)) {
754        return;
755    }
756
757    int64_t timeUs;
758    CHECK(msg->findInt64("timeUs", &timeUs));
759
760    int64_t subTimeUs;
761    readBuffer(type, timeUs, &subTimeUs);
762
763    int64_t delayUs = subTimeUs - timeUs;
764    if (msg->what() == kWhatFetchSubtitleData) {
765        const int64_t oneSecUs = 1000000ll;
766        delayUs -= oneSecUs;
767    }
768    sp<AMessage> msg2 = new AMessage(sendWhat, id());
769    msg2->setInt32("generation", msgGeneration);
770    msg2->post(delayUs < 0 ? 0 : delayUs);
771}
772
773void NuPlayer::GenericSource::sendTextData(
774        uint32_t what,
775        media_track_type type,
776        int32_t curGen,
777        sp<AnotherPacketSource> packets,
778        sp<AMessage> msg) {
779    int32_t msgGeneration;
780    CHECK(msg->findInt32("generation", &msgGeneration));
781    if (msgGeneration != curGen) {
782        // stale
783        return;
784    }
785
786    int64_t subTimeUs;
787    if (packets->nextBufferTime(&subTimeUs) != OK) {
788        return;
789    }
790
791    int64_t nextSubTimeUs;
792    readBuffer(type, -1, &nextSubTimeUs);
793
794    sp<ABuffer> buffer;
795    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
796    if (dequeueStatus == OK) {
797        sp<AMessage> notify = dupNotify();
798        notify->setInt32("what", what);
799        notify->setBuffer("buffer", buffer);
800        notify->post();
801
802        const int64_t delayUs = nextSubTimeUs - subTimeUs;
803        msg->post(delayUs < 0 ? 0 : delayUs);
804    }
805}
806
807sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
808    sp<AMessage> msg = new AMessage(kWhatGetFormat, id());
809    msg->setInt32("audio", audio);
810
811    sp<AMessage> response;
812    void *format;
813    status_t err = msg->postAndAwaitResponse(&response);
814    if (err == OK && response != NULL) {
815        CHECK(response->findPointer("format", &format));
816        return (MetaData *)format;
817    } else {
818        return NULL;
819    }
820}
821
822void NuPlayer::GenericSource::onGetFormatMeta(sp<AMessage> msg) const {
823    int32_t audio;
824    CHECK(msg->findInt32("audio", &audio));
825
826    sp<AMessage> response = new AMessage;
827    sp<MetaData> format = doGetFormatMeta(audio);
828    response->setPointer("format", format.get());
829
830    uint32_t replyID;
831    CHECK(msg->senderAwaitsResponse(&replyID));
832    response->postReply(replyID);
833}
834
835sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
836    sp<MediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
837
838    if (source == NULL) {
839        return NULL;
840    }
841
842    return source->getFormat();
843}
844
845status_t NuPlayer::GenericSource::dequeueAccessUnit(
846        bool audio, sp<ABuffer> *accessUnit) {
847    Track *track = audio ? &mAudioTrack : &mVideoTrack;
848
849    if (track->mSource == NULL) {
850        return -EWOULDBLOCK;
851    }
852
853    if (mIsWidevine && !audio) {
854        // try to read a buffer as we may not have been able to the last time
855        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
856    }
857
858    status_t finalResult;
859    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
860        return (finalResult == OK ? -EWOULDBLOCK : finalResult);
861    }
862
863    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
864
865    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
866        postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
867    }
868
869    if (result != OK) {
870        if (mSubtitleTrack.mSource != NULL) {
871            mSubtitleTrack.mPackets->clear();
872            mFetchSubtitleDataGeneration++;
873        }
874        if (mTimedTextTrack.mSource != NULL) {
875            mTimedTextTrack.mPackets->clear();
876            mFetchTimedTextDataGeneration++;
877        }
878        return result;
879    }
880
881    int64_t timeUs;
882    status_t eosResult; // ignored
883    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
884
885    if (mSubtitleTrack.mSource != NULL
886            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
887        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
888        msg->setInt64("timeUs", timeUs);
889        msg->setInt32("generation", mFetchSubtitleDataGeneration);
890        msg->post();
891    }
892
893    if (mTimedTextTrack.mSource != NULL
894            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
895        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
896        msg->setInt64("timeUs", timeUs);
897        msg->setInt32("generation", mFetchTimedTextDataGeneration);
898        msg->post();
899    }
900
901    return result;
902}
903
904status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
905    *durationUs = mDurationUs;
906    return OK;
907}
908
909size_t NuPlayer::GenericSource::getTrackCount() const {
910    return mSources.size();
911}
912
913sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
914    size_t trackCount = mSources.size();
915    if (trackIndex >= trackCount) {
916        return NULL;
917    }
918
919    sp<AMessage> format = new AMessage();
920    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
921
922    const char *mime;
923    CHECK(meta->findCString(kKeyMIMEType, &mime));
924
925    int32_t trackType;
926    if (!strncasecmp(mime, "video/", 6)) {
927        trackType = MEDIA_TRACK_TYPE_VIDEO;
928    } else if (!strncasecmp(mime, "audio/", 6)) {
929        trackType = MEDIA_TRACK_TYPE_AUDIO;
930    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
931        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
932    } else {
933        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
934    }
935    format->setInt32("type", trackType);
936
937    const char *lang;
938    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
939        lang = "und";
940    }
941    format->setString("language", lang);
942
943    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
944        format->setString("mime", mime);
945
946        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
947        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
948        meta->findInt32(kKeyTrackIsDefault, &isDefault);
949        meta->findInt32(kKeyTrackIsForced, &isForced);
950
951        format->setInt32("auto", !!isAutoselect);
952        format->setInt32("default", !!isDefault);
953        format->setInt32("forced", !!isForced);
954    }
955
956    return format;
957}
958
959ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
960    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, id());
961    msg->setInt32("type", type);
962
963    sp<AMessage> response;
964    int32_t index;
965    status_t err = msg->postAndAwaitResponse(&response);
966    if (err == OK && response != NULL) {
967        CHECK(response->findInt32("index", &index));
968        return index;
969    } else {
970        return -1;
971    }
972}
973
974void NuPlayer::GenericSource::onGetSelectedTrack(sp<AMessage> msg) const {
975    int32_t tmpType;
976    CHECK(msg->findInt32("type", &tmpType));
977    media_track_type type = (media_track_type)tmpType;
978
979    sp<AMessage> response = new AMessage;
980    ssize_t index = doGetSelectedTrack(type);
981    response->setInt32("index", index);
982
983    uint32_t replyID;
984    CHECK(msg->senderAwaitsResponse(&replyID));
985    response->postReply(replyID);
986}
987
988ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
989    const Track *track = NULL;
990    switch (type) {
991    case MEDIA_TRACK_TYPE_VIDEO:
992        track = &mVideoTrack;
993        break;
994    case MEDIA_TRACK_TYPE_AUDIO:
995        track = &mAudioTrack;
996        break;
997    case MEDIA_TRACK_TYPE_TIMEDTEXT:
998        track = &mTimedTextTrack;
999        break;
1000    case MEDIA_TRACK_TYPE_SUBTITLE:
1001        track = &mSubtitleTrack;
1002        break;
1003    default:
1004        break;
1005    }
1006
1007    if (track != NULL && track->mSource != NULL) {
1008        return track->mIndex;
1009    }
1010
1011    return -1;
1012}
1013
1014status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select) {
1015    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
1016    sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
1017    msg->setInt32("trackIndex", trackIndex);
1018    msg->setInt32("select", select);
1019
1020    sp<AMessage> response;
1021    status_t err = msg->postAndAwaitResponse(&response);
1022    if (err == OK && response != NULL) {
1023        CHECK(response->findInt32("err", &err));
1024    }
1025
1026    return err;
1027}
1028
1029void NuPlayer::GenericSource::onSelectTrack(sp<AMessage> msg) {
1030    int32_t trackIndex, select;
1031    CHECK(msg->findInt32("trackIndex", &trackIndex));
1032    CHECK(msg->findInt32("select", &select));
1033
1034    sp<AMessage> response = new AMessage;
1035    status_t err = doSelectTrack(trackIndex, select);
1036    response->setInt32("err", err);
1037
1038    uint32_t replyID;
1039    CHECK(msg->senderAwaitsResponse(&replyID));
1040    response->postReply(replyID);
1041}
1042
1043status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select) {
1044    if (trackIndex >= mSources.size()) {
1045        return BAD_INDEX;
1046    }
1047
1048    if (!select) {
1049        Track* track = NULL;
1050        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
1051            track = &mSubtitleTrack;
1052            mFetchSubtitleDataGeneration++;
1053        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
1054            track = &mTimedTextTrack;
1055            mFetchTimedTextDataGeneration++;
1056        }
1057        if (track == NULL) {
1058            return INVALID_OPERATION;
1059        }
1060        track->mSource->stop();
1061        track->mSource = NULL;
1062        track->mPackets->clear();
1063        return OK;
1064    }
1065
1066    const sp<MediaSource> source = mSources.itemAt(trackIndex);
1067    sp<MetaData> meta = source->getFormat();
1068    const char *mime;
1069    CHECK(meta->findCString(kKeyMIMEType, &mime));
1070    if (!strncasecmp(mime, "text/", 5)) {
1071        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
1072        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
1073        if (track->mSource != NULL && track->mIndex == trackIndex) {
1074            return OK;
1075        }
1076        track->mIndex = trackIndex;
1077        if (track->mSource != NULL) {
1078            track->mSource->stop();
1079        }
1080        track->mSource = mSources.itemAt(trackIndex);
1081        track->mSource->start();
1082        if (track->mPackets == NULL) {
1083            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
1084        } else {
1085            track->mPackets->clear();
1086            track->mPackets->setFormat(track->mSource->getFormat());
1087
1088        }
1089
1090        if (isSubtitle) {
1091            mFetchSubtitleDataGeneration++;
1092        } else {
1093            mFetchTimedTextDataGeneration++;
1094        }
1095
1096        return OK;
1097    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
1098        bool audio = !strncasecmp(mime, "audio/", 6);
1099        Track *track = audio ? &mAudioTrack : &mVideoTrack;
1100        if (track->mSource != NULL && track->mIndex == trackIndex) {
1101            return OK;
1102        }
1103
1104        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, id());
1105        msg->setInt32("trackIndex", trackIndex);
1106        msg->post();
1107        return OK;
1108    }
1109
1110    return INVALID_OPERATION;
1111}
1112
1113status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs) {
1114    sp<AMessage> msg = new AMessage(kWhatSeek, id());
1115    msg->setInt64("seekTimeUs", seekTimeUs);
1116
1117    sp<AMessage> response;
1118    status_t err = msg->postAndAwaitResponse(&response);
1119    if (err == OK && response != NULL) {
1120        CHECK(response->findInt32("err", &err));
1121    }
1122
1123    return err;
1124}
1125
1126void NuPlayer::GenericSource::onSeek(sp<AMessage> msg) {
1127    int64_t seekTimeUs;
1128    CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1129
1130    sp<AMessage> response = new AMessage;
1131    status_t err = doSeek(seekTimeUs);
1132    response->setInt32("err", err);
1133
1134    uint32_t replyID;
1135    CHECK(msg->senderAwaitsResponse(&replyID));
1136    response->postReply(replyID);
1137}
1138
1139status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs) {
1140    // If the Widevine source is stopped, do not attempt to read any
1141    // more buffers.
1142    if (mStopRead) {
1143        return INVALID_OPERATION;
1144    }
1145    if (mVideoTrack.mSource != NULL) {
1146        int64_t actualTimeUs;
1147        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, &actualTimeUs);
1148
1149        seekTimeUs = actualTimeUs;
1150    }
1151
1152    if (mAudioTrack.mSource != NULL) {
1153        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
1154    }
1155
1156    setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
1157    if (!mStarted) {
1158        setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
1159    }
1160    return OK;
1161}
1162
1163sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
1164        MediaBuffer* mb,
1165        media_track_type trackType,
1166        int64_t *actualTimeUs) {
1167    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
1168    size_t outLength = mb->range_length();
1169
1170    if (audio && mAudioIsVorbis) {
1171        outLength += sizeof(int32_t);
1172    }
1173
1174    sp<ABuffer> ab;
1175    if (mIsWidevine && !audio) {
1176        // data is already provided in the buffer
1177        ab = new ABuffer(NULL, mb->range_length());
1178        mb->add_ref();
1179        ab->setMediaBufferBase(mb);
1180    } else {
1181        ab = new ABuffer(outLength);
1182        memcpy(ab->data(),
1183               (const uint8_t *)mb->data() + mb->range_offset(),
1184               mb->range_length());
1185    }
1186
1187    if (audio && mAudioIsVorbis) {
1188        int32_t numPageSamples;
1189        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
1190            numPageSamples = -1;
1191        }
1192
1193        uint8_t* abEnd = ab->data() + mb->range_length();
1194        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
1195    }
1196
1197    sp<AMessage> meta = ab->meta();
1198
1199    int64_t timeUs;
1200    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
1201    meta->setInt64("timeUs", timeUs);
1202
1203    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
1204        const char *mime;
1205        CHECK(mTimedTextTrack.mSource != NULL
1206                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
1207        meta->setString("mime", mime);
1208    }
1209
1210    int64_t durationUs;
1211    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
1212        meta->setInt64("durationUs", durationUs);
1213    }
1214
1215    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
1216        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
1217    }
1218
1219    if (actualTimeUs) {
1220        *actualTimeUs = timeUs;
1221    }
1222
1223    mb->release();
1224    mb = NULL;
1225
1226    return ab;
1227}
1228
1229void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
1230    Mutex::Autolock _l(mReadBufferLock);
1231
1232    if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
1233        mPendingReadBufferTypes |= (1 << trackType);
1234        sp<AMessage> msg = new AMessage(kWhatReadBuffer, id());
1235        msg->setInt32("trackType", trackType);
1236        msg->post();
1237    }
1238}
1239
1240void NuPlayer::GenericSource::onReadBuffer(sp<AMessage> msg) {
1241    int32_t tmpType;
1242    CHECK(msg->findInt32("trackType", &tmpType));
1243    media_track_type trackType = (media_track_type)tmpType;
1244    {
1245        // only protect the variable change, as readBuffer may
1246        // take considerable time.  This may result in one extra
1247        // read being processed, but that is benign.
1248        Mutex::Autolock _l(mReadBufferLock);
1249        mPendingReadBufferTypes &= ~(1 << trackType);
1250    }
1251    readBuffer(trackType);
1252}
1253
1254void NuPlayer::GenericSource::readBuffer(
1255        media_track_type trackType, int64_t seekTimeUs, int64_t *actualTimeUs, bool formatChange) {
1256    // Do not read data if Widevine source is stopped
1257    if (mStopRead) {
1258        return;
1259    }
1260    Track *track;
1261    size_t maxBuffers = 1;
1262    switch (trackType) {
1263        case MEDIA_TRACK_TYPE_VIDEO:
1264            track = &mVideoTrack;
1265            if (mIsWidevine) {
1266                maxBuffers = 2;
1267            }
1268            break;
1269        case MEDIA_TRACK_TYPE_AUDIO:
1270            track = &mAudioTrack;
1271            if (mIsWidevine) {
1272                maxBuffers = 8;
1273            } else {
1274                maxBuffers = 64;
1275            }
1276            break;
1277        case MEDIA_TRACK_TYPE_SUBTITLE:
1278            track = &mSubtitleTrack;
1279            break;
1280        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1281            track = &mTimedTextTrack;
1282            break;
1283        default:
1284            TRESPASS();
1285    }
1286
1287    if (track->mSource == NULL) {
1288        return;
1289    }
1290
1291    if (actualTimeUs) {
1292        *actualTimeUs = seekTimeUs;
1293    }
1294
1295    MediaSource::ReadOptions options;
1296
1297    bool seeking = false;
1298
1299    if (seekTimeUs >= 0) {
1300        options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
1301        seeking = true;
1302    }
1303
1304    if (mIsWidevine && trackType != MEDIA_TRACK_TYPE_AUDIO) {
1305        options.setNonBlocking();
1306    }
1307
1308    for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
1309        MediaBuffer *mbuf;
1310        status_t err = track->mSource->read(&mbuf, &options);
1311
1312        options.clearSeekTo();
1313
1314        if (err == OK) {
1315            int64_t timeUs;
1316            CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs));
1317            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1318                mAudioTimeUs = timeUs;
1319            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1320                mVideoTimeUs = timeUs;
1321            }
1322
1323            // formatChange && seeking: track whose source is changed during selection
1324            // formatChange && !seeking: track whose source is not changed during selection
1325            // !formatChange: normal seek
1326            if ((seeking || formatChange)
1327                    && (trackType == MEDIA_TRACK_TYPE_AUDIO
1328                    || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1329                ATSParser::DiscontinuityType type = formatChange
1330                        ? (seeking
1331                                ? ATSParser::DISCONTINUITY_FORMATCHANGE
1332                                : ATSParser::DISCONTINUITY_NONE)
1333                        : ATSParser::DISCONTINUITY_SEEK;
1334                track->mPackets->queueDiscontinuity( type, NULL, true /* discard */);
1335            }
1336
1337            sp<ABuffer> buffer = mediaBufferToABuffer(mbuf, trackType, actualTimeUs);
1338            track->mPackets->queueAccessUnit(buffer);
1339            formatChange = false;
1340            seeking = false;
1341            ++numBuffers;
1342        } else if (err == WOULD_BLOCK) {
1343            break;
1344        } else if (err == INFO_FORMAT_CHANGED) {
1345#if 0
1346            track->mPackets->queueDiscontinuity(
1347                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1348                    NULL,
1349                    false /* discard */);
1350#endif
1351        } else {
1352            track->mPackets->signalEOS(err);
1353            break;
1354        }
1355    }
1356}
1357
1358}  // namespace android
1359