GenericSource.cpp revision 317a49a4c4bf02944d1e01941c6b9f86179044bb 
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
40namespace android {
41
42NuPlayer::GenericSource::GenericSource(
43        const sp<AMessage> &notify,
44        bool uidValid,
45        uid_t uid)
46    : Source(notify),
47      mFetchSubtitleDataGeneration(0),
48      mFetchTimedTextDataGeneration(0),
49      mDurationUs(0ll),
50      mAudioIsVorbis(false),
51      mIsWidevine(false),
52      mUIDValid(uidValid),
53      mUID(uid),
54      mDrmManagerClient(NULL),
55      mMetaDataSize(-1ll),
56      mBitrate(-1ll),
57      mPollBufferingGeneration(0),
58      mPendingReadBufferTypes(0) {
59    resetDataSource();
60    DataSource::RegisterDefaultSniffers();
61}
62
63void NuPlayer::GenericSource::resetDataSource() {
64    mAudioTimeUs = 0;
65    mVideoTimeUs = 0;
66    mHTTPService.clear();
67    mUri.clear();
68    mUriHeaders.clear();
69    mFd = -1;
70    mOffset = 0;
71    mLength = 0;
72    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
73    mDecryptHandle = NULL;
74    mDrmManagerClient = NULL;
75    mStarted = false;
76}
77
78status_t NuPlayer::GenericSource::setDataSource(
79        const sp<IMediaHTTPService> &httpService,
80        const char *url,
81        const KeyedVector<String8, String8> *headers) {
82    resetDataSource();
83
84    mHTTPService = httpService;
85    mUri = url;
86
87    if (headers) {
88        mUriHeaders = *headers;
89    }
90
91    // delay data source creation to prepareAsync() to avoid blocking
92    // the calling thread in setDataSource for any significant time.
93    return OK;
94}
95
96status_t NuPlayer::GenericSource::setDataSource(
97        int fd, int64_t offset, int64_t length) {
98    resetDataSource();
99
100    mFd = dup(fd);
101    mOffset = offset;
102    mLength = length;
103
104    // delay data source creation to prepareAsync() to avoid blocking
105    // the calling thread in setDataSource for any significant time.
106    return OK;
107}
108
109status_t NuPlayer::GenericSource::initFromDataSource() {
110    sp<MediaExtractor> extractor;
111
112    CHECK(mDataSource != NULL);
113
114    if (mIsWidevine) {
115        String8 mimeType;
116        float confidence;
117        sp<AMessage> dummy;
118        bool success;
119
120        success = SniffWVM(mDataSource, &mimeType, &confidence, &dummy);
121        if (!success
122                || strcasecmp(
123                    mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM)) {
124            ALOGE("unsupported widevine mime: %s", mimeType.string());
125            return UNKNOWN_ERROR;
126        }
127
128        mWVMExtractor = new WVMExtractor(mDataSource);
129        mWVMExtractor->setAdaptiveStreamingMode(true);
130        if (mUIDValid) {
131            mWVMExtractor->setUID(mUID);
132        }
133        extractor = mWVMExtractor;
134    } else {
135        extractor = MediaExtractor::Create(mDataSource,
136                mSniffedMIME.empty() ? NULL: mSniffedMIME.c_str());
137    }
138
139    if (extractor == NULL) {
140        return UNKNOWN_ERROR;
141    }
142
143    if (extractor->getDrmFlag()) {
144        checkDrmStatus(mDataSource);
145    }
146
147    sp<MetaData> fileMeta = extractor->getMetaData();
148    if (fileMeta != NULL) {
149        int64_t duration;
150        if (fileMeta->findInt64(kKeyDuration, &duration)) {
151            mDurationUs = duration;
152        }
153    }
154
155    int32_t totalBitrate = 0;
156
157    for (size_t i = 0; i < extractor->countTracks(); ++i) {
158        sp<MediaSource> track = extractor->getTrack(i);
159
160        sp<MetaData> meta = extractor->getTrackMetaData(i);
161
162        const char *mime;
163        CHECK(meta->findCString(kKeyMIMEType, &mime));
164
165        // Do the string compare immediately with "mime",
166        // we can't assume "mime" would stay valid after another
167        // extractor operation, some extractors might modify meta
168        // during getTrack() and make it invalid.
169        if (!strncasecmp(mime, "audio/", 6)) {
170            if (mAudioTrack.mSource == NULL) {
171                mAudioTrack.mIndex = i;
172                mAudioTrack.mSource = track;
173                mAudioTrack.mPackets =
174                    new AnotherPacketSource(mAudioTrack.mSource->getFormat());
175
176                if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) {
177                    mAudioIsVorbis = true;
178                } else {
179                    mAudioIsVorbis = false;
180                }
181            }
182        } else if (!strncasecmp(mime, "video/", 6)) {
183            if (mVideoTrack.mSource == NULL) {
184                mVideoTrack.mIndex = i;
185                mVideoTrack.mSource = track;
186                mVideoTrack.mPackets =
187                    new AnotherPacketSource(mVideoTrack.mSource->getFormat());
188
189                // check if the source requires secure buffers
190                int32_t secure;
191                if (meta->findInt32(kKeyRequiresSecureBuffers, &secure)
192                        && secure) {
193                    mIsWidevine = true;
194                    if (mUIDValid) {
195                        extractor->setUID(mUID);
196                    }
197                }
198            }
199        }
200
201        if (track != NULL) {
202            mSources.push(track);
203            int64_t durationUs;
204            if (meta->findInt64(kKeyDuration, &durationUs)) {
205                if (durationUs > mDurationUs) {
206                    mDurationUs = durationUs;
207                }
208            }
209
210            int32_t bitrate;
211            if (totalBitrate >= 0 && meta->findInt32(kKeyBitRate, &bitrate)) {
212                totalBitrate += bitrate;
213            } else {
214                totalBitrate = -1;
215            }
216        }
217    }
218
219    mBitrate = totalBitrate;
220
221    return OK;
222}
223
224void NuPlayer::GenericSource::checkDrmStatus(const sp<DataSource>& dataSource) {
225    dataSource->getDrmInfo(mDecryptHandle, &mDrmManagerClient);
226    if (mDecryptHandle != NULL) {
227        CHECK(mDrmManagerClient);
228        if (RightsStatus::RIGHTS_VALID != mDecryptHandle->status) {
229            sp<AMessage> msg = dupNotify();
230            msg->setInt32("what", kWhatDrmNoLicense);
231            msg->post();
232        }
233    }
234}
235
236int64_t NuPlayer::GenericSource::getLastReadPosition() {
237    if (mAudioTrack.mSource != NULL) {
238        return mAudioTimeUs;
239    } else if (mVideoTrack.mSource != NULL) {
240        return mVideoTimeUs;
241    } else {
242        return 0;
243    }
244}
245
246status_t NuPlayer::GenericSource::setBuffers(
247        bool audio, Vector<MediaBuffer *> &buffers) {
248    if (mIsWidevine && !audio) {
249        return mVideoTrack.mSource->setBuffers(buffers);
250    }
251    return INVALID_OPERATION;
252}
253
254NuPlayer::GenericSource::~GenericSource() {
255    if (mLooper != NULL) {
256        mLooper->unregisterHandler(id());
257        mLooper->stop();
258    }
259}
260
261void NuPlayer::GenericSource::prepareAsync() {
262    if (mLooper == NULL) {
263        mLooper = new ALooper;
264        mLooper->setName("generic");
265        mLooper->start();
266
267        mLooper->registerHandler(this);
268    }
269
270    sp<AMessage> msg = new AMessage(kWhatPrepareAsync, id());
271    msg->post();
272}
273
274void NuPlayer::GenericSource::onPrepareAsync() {
275    // delayed data source creation
276    if (mDataSource == NULL) {
277        if (!mUri.empty()) {
278            mIsWidevine = !strncasecmp(mUri.c_str(), "widevine://", 11);
279
280            mDataSource = DataSource::CreateFromURI(
281                   mHTTPService, mUri.c_str(), &mUriHeaders, &mContentType);
282        } else {
283            // set to false first, if the extractor
284            // comes back as secure, set it to true then.
285            mIsWidevine = false;
286
287            mDataSource = new FileSource(mFd, mOffset, mLength);
288        }
289
290        if (mDataSource == NULL) {
291            ALOGE("Failed to create data source!");
292            notifyPreparedAndCleanup(UNKNOWN_ERROR);
293            return;
294        }
295
296        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
297            mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get());
298        }
299
300        if (mIsWidevine || mCachedSource != NULL) {
301            schedulePollBuffering();
302        }
303    }
304
305    // check initial caching status
306    status_t err = prefillCacheIfNecessary();
307    if (err != OK) {
308        if (err == -EAGAIN) {
309            (new AMessage(kWhatPrepareAsync, id()))->post(200000);
310        } else {
311            ALOGE("Failed to prefill data cache!");
312            notifyPreparedAndCleanup(UNKNOWN_ERROR);
313        }
314        return;
315    }
316
317    // init extrator from data source
318    err = initFromDataSource();
319
320    if (err != OK) {
321        ALOGE("Failed to init from data source!");
322        notifyPreparedAndCleanup(err);
323        return;
324    }
325
326    if (mVideoTrack.mSource != NULL) {
327        sp<MetaData> meta = doGetFormatMeta(false /* audio */);
328        sp<AMessage> msg = new AMessage;
329        err = convertMetaDataToMessage(meta, &msg);
330        if(err != OK) {
331            notifyPreparedAndCleanup(err);
332            return;
333        }
334        notifyVideoSizeChanged(msg);
335    }
336
337    notifyFlagsChanged(
338            (mIsWidevine ? FLAG_SECURE : 0)
339            | FLAG_CAN_PAUSE
340            | FLAG_CAN_SEEK_BACKWARD
341            | FLAG_CAN_SEEK_FORWARD
342            | FLAG_CAN_SEEK);
343
344    notifyPrepared();
345}
346
347void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
348    if (err != OK) {
349        mMetaDataSize = -1ll;
350        mContentType = "";
351        mSniffedMIME = "";
352        mDataSource.clear();
353        mCachedSource.clear();
354
355        cancelPollBuffering();
356    }
357    notifyPrepared(err);
358}
359
360status_t NuPlayer::GenericSource::prefillCacheIfNecessary() {
361    CHECK(mDataSource != NULL);
362
363    if (mCachedSource == NULL) {
364        // no prefill if the data source is not cached
365        return OK;
366    }
367
368    // We're not doing this for streams that appear to be audio-only
369    // streams to ensure that even low bandwidth streams start
370    // playing back fairly instantly.
371    if (!strncasecmp(mContentType.string(), "audio/", 6)) {
372        return OK;
373    }
374
375    // We're going to prefill the cache before trying to instantiate
376    // the extractor below, as the latter is an operation that otherwise
377    // could block on the datasource for a significant amount of time.
378    // During that time we'd be unable to abort the preparation phase
379    // without this prefill.
380
381    // Initially make sure we have at least 192 KB for the sniff
382    // to complete without blocking.
383    static const size_t kMinBytesForSniffing = 192 * 1024;
384    static const size_t kDefaultMetaSize = 200000;
385
386    status_t finalStatus;
387
388    size_t cachedDataRemaining =
389            mCachedSource->approxDataRemaining(&finalStatus);
390
391    if (finalStatus != OK || (mMetaDataSize >= 0
392            && (off64_t)cachedDataRemaining >= mMetaDataSize)) {
393        ALOGV("stop caching, status %d, "
394                "metaDataSize %lld, cachedDataRemaining %zu",
395                finalStatus, mMetaDataSize, cachedDataRemaining);
396        return OK;
397    }
398
399    ALOGV("now cached %zu bytes of data", cachedDataRemaining);
400
401    if (mMetaDataSize < 0
402            && cachedDataRemaining >= kMinBytesForSniffing) {
403        String8 tmp;
404        float confidence;
405        sp<AMessage> meta;
406        if (!mCachedSource->sniff(&tmp, &confidence, &meta)) {
407            return UNKNOWN_ERROR;
408        }
409
410        // We successfully identified the file's extractor to
411        // be, remember this mime type so we don't have to
412        // sniff it again when we call MediaExtractor::Create()
413        mSniffedMIME = tmp.string();
414
415        if (meta == NULL
416                || !meta->findInt64("meta-data-size",
417                        reinterpret_cast<int64_t*>(&mMetaDataSize))) {
418            mMetaDataSize = kDefaultMetaSize;
419        }
420
421        if (mMetaDataSize < 0ll) {
422            ALOGE("invalid metaDataSize = %lld bytes", mMetaDataSize);
423            return UNKNOWN_ERROR;
424        }
425    }
426
427    return -EAGAIN;
428}
429
430void NuPlayer::GenericSource::start() {
431    ALOGI("start");
432
433    if (mAudioTrack.mSource != NULL) {
434        CHECK_EQ(mAudioTrack.mSource->start(), (status_t)OK);
435
436        postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
437    }
438
439    if (mVideoTrack.mSource != NULL) {
440        CHECK_EQ(mVideoTrack.mSource->start(), (status_t)OK);
441
442        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
443    }
444
445    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
446    mStarted = true;
447}
448
449void NuPlayer::GenericSource::stop() {
450    // nothing to do, just account for DRM playback status
451    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
452    mStarted = false;
453}
454
455void NuPlayer::GenericSource::pause() {
456    // nothing to do, just account for DRM playback status
457    setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
458    mStarted = false;
459}
460
461void NuPlayer::GenericSource::resume() {
462    // nothing to do, just account for DRM playback status
463    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
464    mStarted = true;
465}
466
467void NuPlayer::GenericSource::disconnect() {
468    if (mDataSource != NULL) {
469        // disconnect data source
470        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
471            static_cast<NuCachedSource2 *>(mDataSource.get())->disconnect();
472        }
473    }
474}
475
476void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
477    if (mDecryptHandle != NULL) {
478        mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
479    }
480    mSubtitleTrack.mPackets = new AnotherPacketSource(NULL);
481    mTimedTextTrack.mPackets = new AnotherPacketSource(NULL);
482}
483
484status_t NuPlayer::GenericSource::feedMoreTSData() {
485    return OK;
486}
487
488void NuPlayer::GenericSource::schedulePollBuffering() {
489    sp<AMessage> msg = new AMessage(kWhatPollBuffering, id());
490    msg->setInt32("generation", mPollBufferingGeneration);
491    msg->post(1000000ll);
492}
493
494void NuPlayer::GenericSource::cancelPollBuffering() {
495    ++mPollBufferingGeneration;
496}
497
498void NuPlayer::GenericSource::notifyBufferingUpdate(int percentage) {
499    sp<AMessage> msg = dupNotify();
500    msg->setInt32("what", kWhatBufferingUpdate);
501    msg->setInt32("percentage", percentage);
502    msg->post();
503}
504
505void NuPlayer::GenericSource::onPollBuffering() {
506    status_t finalStatus = UNKNOWN_ERROR;
507    int64_t cachedDurationUs = 0ll;
508
509    if (mCachedSource != NULL) {
510        size_t cachedDataRemaining =
511                mCachedSource->approxDataRemaining(&finalStatus);
512
513        if (finalStatus == OK) {
514            off64_t size;
515            int64_t bitrate = 0ll;
516            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
517                bitrate = size * 8000000ll / mDurationUs;
518            } else if (mBitrate > 0) {
519                bitrate = mBitrate;
520            }
521            if (bitrate > 0) {
522                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
523            }
524        }
525    } else if (mWVMExtractor != NULL) {
526        cachedDurationUs
527            = mWVMExtractor->getCachedDurationUs(&finalStatus);
528    }
529
530    if (finalStatus == ERROR_END_OF_STREAM) {
531        notifyBufferingUpdate(100);
532        cancelPollBuffering();
533        return;
534    } else if (cachedDurationUs > 0ll && mDurationUs > 0ll) {
535        int percentage = 100.0 * cachedDurationUs / mDurationUs;
536        if (percentage > 100) {
537            percentage = 100;
538        }
539
540        notifyBufferingUpdate(percentage);
541    }
542
543    schedulePollBuffering();
544}
545
546
547void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
548    switch (msg->what()) {
549      case kWhatPrepareAsync:
550      {
551          onPrepareAsync();
552          break;
553      }
554      case kWhatFetchSubtitleData:
555      {
556          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
557                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
558          break;
559      }
560
561      case kWhatFetchTimedTextData:
562      {
563          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
564                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
565          break;
566      }
567
568      case kWhatSendSubtitleData:
569      {
570          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
571                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
572          break;
573      }
574
575      case kWhatSendTimedTextData:
576      {
577          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
578                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
579          break;
580      }
581
582      case kWhatChangeAVSource:
583      {
584          int32_t trackIndex;
585          CHECK(msg->findInt32("trackIndex", &trackIndex));
586          const sp<MediaSource> source = mSources.itemAt(trackIndex);
587
588          Track* track;
589          const char *mime;
590          media_track_type trackType, counterpartType;
591          sp<MetaData> meta = source->getFormat();
592          meta->findCString(kKeyMIMEType, &mime);
593          if (!strncasecmp(mime, "audio/", 6)) {
594              track = &mAudioTrack;
595              trackType = MEDIA_TRACK_TYPE_AUDIO;
596              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
597          } else {
598              CHECK(!strncasecmp(mime, "video/", 6));
599              track = &mVideoTrack;
600              trackType = MEDIA_TRACK_TYPE_VIDEO;
601              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
602          }
603
604
605          if (track->mSource != NULL) {
606              track->mSource->stop();
607          }
608          track->mSource = source;
609          track->mSource->start();
610          track->mIndex = trackIndex;
611
612          status_t avail;
613          if (!track->mPackets->hasBufferAvailable(&avail)) {
614              // sync from other source
615              TRESPASS();
616              break;
617          }
618
619          int64_t timeUs, actualTimeUs;
620          const bool formatChange = true;
621          sp<AMessage> latestMeta = track->mPackets->getLatestEnqueuedMeta();
622          CHECK(latestMeta != NULL && latestMeta->findInt64("timeUs", &timeUs));
623          readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
624          readBuffer(counterpartType, -1, NULL, formatChange);
625          ALOGV("timeUs %lld actualTimeUs %lld", timeUs, actualTimeUs);
626
627          break;
628      }
629      case kWhatPollBuffering:
630      {
631          int32_t generation;
632          CHECK(msg->findInt32("generation", &generation));
633          if (generation == mPollBufferingGeneration) {
634              onPollBuffering();
635          }
636          break;
637      }
638
639      case kWhatGetFormat:
640      {
641          onGetFormatMeta(msg);
642          break;
643      }
644
645      case kWhatGetSelectedTrack:
646      {
647          onGetSelectedTrack(msg);
648          break;
649      }
650
651      case kWhatSelectTrack:
652      {
653          onSelectTrack(msg);
654          break;
655      }
656
657      case kWhatSeek:
658      {
659          onSeek(msg);
660          break;
661      }
662
663      case kWhatReadBuffer:
664      {
665          onReadBuffer(msg);
666          break;
667      }
668
669      default:
670          Source::onMessageReceived(msg);
671          break;
672    }
673}
674
675void NuPlayer::GenericSource::fetchTextData(
676        uint32_t sendWhat,
677        media_track_type type,
678        int32_t curGen,
679        sp<AnotherPacketSource> packets,
680        sp<AMessage> msg) {
681    int32_t msgGeneration;
682    CHECK(msg->findInt32("generation", &msgGeneration));
683    if (msgGeneration != curGen) {
684        // stale
685        return;
686    }
687
688    int32_t avail;
689    if (packets->hasBufferAvailable(&avail)) {
690        return;
691    }
692
693    int64_t timeUs;
694    CHECK(msg->findInt64("timeUs", &timeUs));
695
696    int64_t subTimeUs;
697    readBuffer(type, timeUs, &subTimeUs);
698
699    int64_t delayUs = subTimeUs - timeUs;
700    if (msg->what() == kWhatFetchSubtitleData) {
701        const int64_t oneSecUs = 1000000ll;
702        delayUs -= oneSecUs;
703    }
704    sp<AMessage> msg2 = new AMessage(sendWhat, id());
705    msg2->setInt32("generation", msgGeneration);
706    msg2->post(delayUs < 0 ? 0 : delayUs);
707}
708
709void NuPlayer::GenericSource::sendTextData(
710        uint32_t what,
711        media_track_type type,
712        int32_t curGen,
713        sp<AnotherPacketSource> packets,
714        sp<AMessage> msg) {
715    int32_t msgGeneration;
716    CHECK(msg->findInt32("generation", &msgGeneration));
717    if (msgGeneration != curGen) {
718        // stale
719        return;
720    }
721
722    int64_t subTimeUs;
723    if (packets->nextBufferTime(&subTimeUs) != OK) {
724        return;
725    }
726
727    int64_t nextSubTimeUs;
728    readBuffer(type, -1, &nextSubTimeUs);
729
730    sp<ABuffer> buffer;
731    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
732    if (dequeueStatus == OK) {
733        sp<AMessage> notify = dupNotify();
734        notify->setInt32("what", what);
735        notify->setBuffer("buffer", buffer);
736        notify->post();
737
738        const int64_t delayUs = nextSubTimeUs - subTimeUs;
739        msg->post(delayUs < 0 ? 0 : delayUs);
740    }
741}
742
743sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
744    sp<AMessage> msg = new AMessage(kWhatGetFormat, id());
745    msg->setInt32("audio", audio);
746
747    sp<AMessage> response;
748    void *format;
749    status_t err = msg->postAndAwaitResponse(&response);
750    if (err == OK && response != NULL) {
751        CHECK(response->findPointer("format", &format));
752        return (MetaData *)format;
753    } else {
754        return NULL;
755    }
756}
757
758void NuPlayer::GenericSource::onGetFormatMeta(sp<AMessage> msg) const {
759    int32_t audio;
760    CHECK(msg->findInt32("audio", &audio));
761
762    sp<AMessage> response = new AMessage;
763    sp<MetaData> format = doGetFormatMeta(audio);
764    response->setPointer("format", format.get());
765
766    uint32_t replyID;
767    CHECK(msg->senderAwaitsResponse(&replyID));
768    response->postReply(replyID);
769}
770
771sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
772    sp<MediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
773
774    if (source == NULL) {
775        return NULL;
776    }
777
778    return source->getFormat();
779}
780
781status_t NuPlayer::GenericSource::dequeueAccessUnit(
782        bool audio, sp<ABuffer> *accessUnit) {
783    Track *track = audio ? &mAudioTrack : &mVideoTrack;
784
785    if (track->mSource == NULL) {
786        return -EWOULDBLOCK;
787    }
788
789    if (mIsWidevine && !audio) {
790        // try to read a buffer as we may not have been able to the last time
791        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
792    }
793
794    status_t finalResult;
795    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
796        return (finalResult == OK ? -EWOULDBLOCK : finalResult);
797    }
798
799    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
800
801    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
802        postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
803    }
804
805    if (result != OK) {
806        if (mSubtitleTrack.mSource != NULL) {
807            mSubtitleTrack.mPackets->clear();
808            mFetchSubtitleDataGeneration++;
809        }
810        if (mTimedTextTrack.mSource != NULL) {
811            mTimedTextTrack.mPackets->clear();
812            mFetchTimedTextDataGeneration++;
813        }
814        return result;
815    }
816
817    int64_t timeUs;
818    status_t eosResult; // ignored
819    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
820
821    if (mSubtitleTrack.mSource != NULL
822            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
823        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
824        msg->setInt64("timeUs", timeUs);
825        msg->setInt32("generation", mFetchSubtitleDataGeneration);
826        msg->post();
827    }
828
829    if (mTimedTextTrack.mSource != NULL
830            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
831        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
832        msg->setInt64("timeUs", timeUs);
833        msg->setInt32("generation", mFetchTimedTextDataGeneration);
834        msg->post();
835    }
836
837    return result;
838}
839
840status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
841    *durationUs = mDurationUs;
842    return OK;
843}
844
845size_t NuPlayer::GenericSource::getTrackCount() const {
846    return mSources.size();
847}
848
849sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
850    size_t trackCount = mSources.size();
851    if (trackIndex >= trackCount) {
852        return NULL;
853    }
854
855    sp<AMessage> format = new AMessage();
856    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
857
858    const char *mime;
859    CHECK(meta->findCString(kKeyMIMEType, &mime));
860
861    int32_t trackType;
862    if (!strncasecmp(mime, "video/", 6)) {
863        trackType = MEDIA_TRACK_TYPE_VIDEO;
864    } else if (!strncasecmp(mime, "audio/", 6)) {
865        trackType = MEDIA_TRACK_TYPE_AUDIO;
866    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
867        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
868    } else {
869        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
870    }
871    format->setInt32("type", trackType);
872
873    const char *lang;
874    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
875        lang = "und";
876    }
877    format->setString("language", lang);
878
879    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
880        format->setString("mime", mime);
881
882        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
883        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
884        meta->findInt32(kKeyTrackIsDefault, &isDefault);
885        meta->findInt32(kKeyTrackIsForced, &isForced);
886
887        format->setInt32("auto", !!isAutoselect);
888        format->setInt32("default", !!isDefault);
889        format->setInt32("forced", !!isForced);
890    }
891
892    return format;
893}
894
895ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
896    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, id());
897    msg->setInt32("type", type);
898
899    sp<AMessage> response;
900    int32_t index;
901    status_t err = msg->postAndAwaitResponse(&response);
902    if (err == OK && response != NULL) {
903        CHECK(response->findInt32("index", &index));
904        return index;
905    } else {
906        return -1;
907    }
908}
909
910void NuPlayer::GenericSource::onGetSelectedTrack(sp<AMessage> msg) const {
911    int32_t tmpType;
912    CHECK(msg->findInt32("type", &tmpType));
913    media_track_type type = (media_track_type)tmpType;
914
915    sp<AMessage> response = new AMessage;
916    ssize_t index = doGetSelectedTrack(type);
917    response->setInt32("index", index);
918
919    uint32_t replyID;
920    CHECK(msg->senderAwaitsResponse(&replyID));
921    response->postReply(replyID);
922}
923
924ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
925    const Track *track = NULL;
926    switch (type) {
927    case MEDIA_TRACK_TYPE_VIDEO:
928        track = &mVideoTrack;
929        break;
930    case MEDIA_TRACK_TYPE_AUDIO:
931        track = &mAudioTrack;
932        break;
933    case MEDIA_TRACK_TYPE_TIMEDTEXT:
934        track = &mTimedTextTrack;
935        break;
936    case MEDIA_TRACK_TYPE_SUBTITLE:
937        track = &mSubtitleTrack;
938        break;
939    default:
940        break;
941    }
942
943    if (track != NULL && track->mSource != NULL) {
944        return track->mIndex;
945    }
946
947    return -1;
948}
949
950status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select) {
951    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
952    sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
953    msg->setInt32("trackIndex", trackIndex);
954    msg->setInt32("select", select);
955
956    sp<AMessage> response;
957    status_t err = msg->postAndAwaitResponse(&response);
958    if (err == OK && response != NULL) {
959        CHECK(response->findInt32("err", &err));
960    }
961
962    return err;
963}
964
965void NuPlayer::GenericSource::onSelectTrack(sp<AMessage> msg) {
966    int32_t trackIndex, select;
967    CHECK(msg->findInt32("trackIndex", &trackIndex));
968    CHECK(msg->findInt32("select", &select));
969
970    sp<AMessage> response = new AMessage;
971    status_t err = doSelectTrack(trackIndex, select);
972    response->setInt32("err", err);
973
974    uint32_t replyID;
975    CHECK(msg->senderAwaitsResponse(&replyID));
976    response->postReply(replyID);
977}
978
979status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select) {
980    if (trackIndex >= mSources.size()) {
981        return BAD_INDEX;
982    }
983
984    if (!select) {
985        Track* track = NULL;
986        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
987            track = &mSubtitleTrack;
988            mFetchSubtitleDataGeneration++;
989        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
990            track = &mTimedTextTrack;
991            mFetchTimedTextDataGeneration++;
992        }
993        if (track == NULL) {
994            return INVALID_OPERATION;
995        }
996        track->mSource->stop();
997        track->mSource = NULL;
998        track->mPackets->clear();
999        return OK;
1000    }
1001
1002    const sp<MediaSource> source = mSources.itemAt(trackIndex);
1003    sp<MetaData> meta = source->getFormat();
1004    const char *mime;
1005    CHECK(meta->findCString(kKeyMIMEType, &mime));
1006    if (!strncasecmp(mime, "text/", 5)) {
1007        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
1008        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
1009        if (track->mSource != NULL && track->mIndex == trackIndex) {
1010            return OK;
1011        }
1012        track->mIndex = trackIndex;
1013        if (track->mSource != NULL) {
1014            track->mSource->stop();
1015        }
1016        track->mSource = mSources.itemAt(trackIndex);
1017        track->mSource->start();
1018        if (track->mPackets == NULL) {
1019            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
1020        } else {
1021            track->mPackets->clear();
1022            track->mPackets->setFormat(track->mSource->getFormat());
1023
1024        }
1025
1026        if (isSubtitle) {
1027            mFetchSubtitleDataGeneration++;
1028        } else {
1029            mFetchTimedTextDataGeneration++;
1030        }
1031
1032        return OK;
1033    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
1034        bool audio = !strncasecmp(mime, "audio/", 6);
1035        Track *track = audio ? &mAudioTrack : &mVideoTrack;
1036        if (track->mSource != NULL && track->mIndex == trackIndex) {
1037            return OK;
1038        }
1039
1040        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, id());
1041        msg->setInt32("trackIndex", trackIndex);
1042        msg->post();
1043        return OK;
1044    }
1045
1046    return INVALID_OPERATION;
1047}
1048
1049status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs) {
1050    sp<AMessage> msg = new AMessage(kWhatSeek, id());
1051    msg->setInt64("seekTimeUs", seekTimeUs);
1052
1053    sp<AMessage> response;
1054    status_t err = msg->postAndAwaitResponse(&response);
1055    if (err == OK && response != NULL) {
1056        CHECK(response->findInt32("err", &err));
1057    }
1058
1059    return err;
1060}
1061
1062void NuPlayer::GenericSource::onSeek(sp<AMessage> msg) {
1063    int64_t seekTimeUs;
1064    CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1065
1066    sp<AMessage> response = new AMessage;
1067    status_t err = doSeek(seekTimeUs);
1068    response->setInt32("err", err);
1069
1070    uint32_t replyID;
1071    CHECK(msg->senderAwaitsResponse(&replyID));
1072    response->postReply(replyID);
1073}
1074
1075status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs) {
1076    if (mVideoTrack.mSource != NULL) {
1077        int64_t actualTimeUs;
1078        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, &actualTimeUs);
1079
1080        seekTimeUs = actualTimeUs;
1081    }
1082
1083    if (mAudioTrack.mSource != NULL) {
1084        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
1085    }
1086
1087    setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
1088    if (!mStarted) {
1089        setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
1090    }
1091    return OK;
1092}
1093
1094sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
1095        MediaBuffer* mb,
1096        media_track_type trackType,
1097        int64_t *actualTimeUs) {
1098    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
1099    size_t outLength = mb->range_length();
1100
1101    if (audio && mAudioIsVorbis) {
1102        outLength += sizeof(int32_t);
1103    }
1104
1105    sp<ABuffer> ab;
1106    if (mIsWidevine && !audio) {
1107        // data is already provided in the buffer
1108        ab = new ABuffer(NULL, mb->range_length());
1109        ab->meta()->setPointer("mediaBuffer", mb);
1110        mb->add_ref();
1111    } else {
1112        ab = new ABuffer(outLength);
1113        memcpy(ab->data(),
1114               (const uint8_t *)mb->data() + mb->range_offset(),
1115               mb->range_length());
1116    }
1117
1118    if (audio && mAudioIsVorbis) {
1119        int32_t numPageSamples;
1120        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
1121            numPageSamples = -1;
1122        }
1123
1124        uint8_t* abEnd = ab->data() + mb->range_length();
1125        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
1126    }
1127
1128    sp<AMessage> meta = ab->meta();
1129
1130    int64_t timeUs;
1131    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
1132    meta->setInt64("timeUs", timeUs);
1133
1134    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
1135        const char *mime;
1136        CHECK(mTimedTextTrack.mSource != NULL
1137                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
1138        meta->setString("mime", mime);
1139    }
1140
1141    int64_t durationUs;
1142    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
1143        meta->setInt64("durationUs", durationUs);
1144    }
1145
1146    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
1147        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
1148    }
1149
1150    if (actualTimeUs) {
1151        *actualTimeUs = timeUs;
1152    }
1153
1154    mb->release();
1155    mb = NULL;
1156
1157    return ab;
1158}
1159
1160void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
1161    Mutex::Autolock _l(mReadBufferLock);
1162
1163    if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
1164        mPendingReadBufferTypes |= (1 << trackType);
1165        sp<AMessage> msg = new AMessage(kWhatReadBuffer, id());
1166        msg->setInt32("trackType", trackType);
1167        msg->post();
1168    }
1169}
1170
1171void NuPlayer::GenericSource::onReadBuffer(sp<AMessage> msg) {
1172    int32_t tmpType;
1173    CHECK(msg->findInt32("trackType", &tmpType));
1174    media_track_type trackType = (media_track_type)tmpType;
1175    {
1176        // only protect the variable change, as readBuffer may
1177        // take considerable time.  This may result in one extra
1178        // read being processed, but that is benign.
1179        Mutex::Autolock _l(mReadBufferLock);
1180        mPendingReadBufferTypes &= ~(1 << trackType);
1181    }
1182    readBuffer(trackType);
1183}
1184
1185void NuPlayer::GenericSource::readBuffer(
1186        media_track_type trackType, int64_t seekTimeUs, int64_t *actualTimeUs, bool formatChange) {
1187    Track *track;
1188    size_t maxBuffers = 1;
1189    switch (trackType) {
1190        case MEDIA_TRACK_TYPE_VIDEO:
1191            track = &mVideoTrack;
1192            break;
1193        case MEDIA_TRACK_TYPE_AUDIO:
1194            track = &mAudioTrack;
1195            maxBuffers = 64;
1196            break;
1197        case MEDIA_TRACK_TYPE_SUBTITLE:
1198            track = &mSubtitleTrack;
1199            break;
1200        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1201            track = &mTimedTextTrack;
1202            break;
1203        default:
1204            TRESPASS();
1205    }
1206
1207    if (track->mSource == NULL) {
1208        return;
1209    }
1210
1211    if (actualTimeUs) {
1212        *actualTimeUs = seekTimeUs;
1213    }
1214
1215    MediaSource::ReadOptions options;
1216
1217    bool seeking = false;
1218
1219    if (seekTimeUs >= 0) {
1220        options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
1221        seeking = true;
1222    }
1223
1224    if (mIsWidevine && trackType != MEDIA_TRACK_TYPE_AUDIO) {
1225        options.setNonBlocking();
1226    }
1227
1228    for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
1229        MediaBuffer *mbuf;
1230        status_t err = track->mSource->read(&mbuf, &options);
1231
1232        options.clearSeekTo();
1233
1234        if (err == OK) {
1235            int64_t timeUs;
1236            CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs));
1237            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1238                mAudioTimeUs = timeUs;
1239            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1240                mVideoTimeUs = timeUs;
1241            }
1242
1243            // formatChange && seeking: track whose source is changed during selection
1244            // formatChange && !seeking: track whose source is not changed during selection
1245            // !formatChange: normal seek
1246            if ((seeking || formatChange)
1247                    && (trackType == MEDIA_TRACK_TYPE_AUDIO
1248                    || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1249                ATSParser::DiscontinuityType type = formatChange
1250                        ? (seeking
1251                                ? ATSParser::DISCONTINUITY_FORMATCHANGE
1252                                : ATSParser::DISCONTINUITY_NONE)
1253                        : ATSParser::DISCONTINUITY_SEEK;
1254                track->mPackets->queueDiscontinuity( type, NULL, true /* discard */);
1255            }
1256
1257            sp<ABuffer> buffer = mediaBufferToABuffer(mbuf, trackType, actualTimeUs);
1258            track->mPackets->queueAccessUnit(buffer);
1259            formatChange = false;
1260            seeking = false;
1261            ++numBuffers;
1262        } else if (err == WOULD_BLOCK) {
1263            break;
1264        } else if (err == INFO_FORMAT_CHANGED) {
1265#if 0
1266            track->mPackets->queueDiscontinuity(
1267                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1268                    NULL,
1269                    false /* discard */);
1270#endif
1271        } else {
1272            track->mPackets->signalEOS(err);
1273            break;
1274        }
1275    }
1276}
1277
1278}  // namespace android
1279