GenericSource.cpp revision 802768790c131f8237364906fd13981a6bb91193 
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 "../../libstagefright/include/DRMExtractor.h"
36#include "../../libstagefright/include/NuCachedSource2.h"
37#include "../../libstagefright/include/WVMExtractor.h"
38
39namespace android {
40
41NuPlayer::GenericSource::GenericSource(
42        const sp<AMessage> &notify,
43        bool uidValid,
44        uid_t uid)
45    : Source(notify),
46      mFetchSubtitleDataGeneration(0),
47      mFetchTimedTextDataGeneration(0),
48      mDurationUs(0ll),
49      mAudioIsVorbis(false),
50      mIsWidevine(false),
51      mUIDValid(uidValid),
52      mUID(uid),
53      mDrmManagerClient(NULL),
54      mMetaDataSize(-1ll),
55      mBitrate(-1ll),
56      mPollBufferingGeneration(0) {
57    resetDataSource();
58    DataSource::RegisterDefaultSniffers();
59}
60
61void NuPlayer::GenericSource::resetDataSource() {
62    mAudioTimeUs = 0;
63    mVideoTimeUs = 0;
64    mHTTPService.clear();
65    mUri.clear();
66    mUriHeaders.clear();
67    mFd = -1;
68    mOffset = 0;
69    mLength = 0;
70    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
71    mDecryptHandle = NULL;
72    mDrmManagerClient = NULL;
73    mStarted = false;
74}
75
76status_t NuPlayer::GenericSource::setDataSource(
77        const sp<IMediaHTTPService> &httpService,
78        const char *url,
79        const KeyedVector<String8, String8> *headers) {
80    resetDataSource();
81
82    mHTTPService = httpService;
83    mUri = url;
84
85    if (headers) {
86        mUriHeaders = *headers;
87    }
88
89    // delay data source creation to prepareAsync() to avoid blocking
90    // the calling thread in setDataSource for any significant time.
91    return OK;
92}
93
94status_t NuPlayer::GenericSource::setDataSource(
95        int fd, int64_t offset, int64_t length) {
96    resetDataSource();
97
98    mFd = dup(fd);
99    mOffset = offset;
100    mLength = length;
101
102    // delay data source creation to prepareAsync() to avoid blocking
103    // the calling thread in setDataSource for any significant time.
104    return OK;
105}
106
107status_t NuPlayer::GenericSource::initFromDataSource() {
108    sp<MediaExtractor> extractor;
109
110    CHECK(mDataSource != NULL);
111
112    if (mIsWidevine) {
113        String8 mimeType;
114        float confidence;
115        sp<AMessage> dummy;
116        bool success;
117
118        success = SniffWVM(mDataSource, &mimeType, &confidence, &dummy);
119        if (!success
120                || strcasecmp(
121                    mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM)) {
122            ALOGE("unsupported widevine mime: %s", mimeType.string());
123            return UNKNOWN_ERROR;
124        }
125
126        mWVMExtractor = new WVMExtractor(mDataSource);
127        mWVMExtractor->setAdaptiveStreamingMode(true);
128        if (mUIDValid) {
129            mWVMExtractor->setUID(mUID);
130        }
131        extractor = mWVMExtractor;
132    } else {
133        extractor = MediaExtractor::Create(mDataSource,
134                mSniffedMIME.empty() ? NULL: mSniffedMIME.c_str());
135    }
136
137    if (extractor == NULL) {
138        return UNKNOWN_ERROR;
139    }
140
141    if (extractor->getDrmFlag()) {
142        checkDrmStatus(mDataSource);
143    }
144
145    sp<MetaData> fileMeta = extractor->getMetaData();
146    if (fileMeta != NULL) {
147        int64_t duration;
148        if (fileMeta->findInt64(kKeyDuration, &duration)) {
149            mDurationUs = duration;
150        }
151    }
152
153    int32_t totalBitrate = 0;
154
155    for (size_t i = 0; i < extractor->countTracks(); ++i) {
156        sp<MetaData> meta = extractor->getTrackMetaData(i);
157
158        const char *mime;
159        CHECK(meta->findCString(kKeyMIMEType, &mime));
160
161        sp<MediaSource> track = extractor->getTrack(i);
162
163        if (!strncasecmp(mime, "audio/", 6)) {
164            if (mAudioTrack.mSource == NULL) {
165                mAudioTrack.mIndex = i;
166                mAudioTrack.mSource = track;
167
168                if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) {
169                    mAudioIsVorbis = true;
170                } else {
171                    mAudioIsVorbis = false;
172                }
173            }
174        } else if (!strncasecmp(mime, "video/", 6)) {
175            if (mVideoTrack.mSource == NULL) {
176                mVideoTrack.mIndex = i;
177                mVideoTrack.mSource = track;
178
179                // check if the source requires secure buffers
180                int32_t secure;
181                if (meta->findInt32(kKeyRequiresSecureBuffers, &secure)
182                        && secure) {
183                    mIsWidevine = true;
184                    if (mUIDValid) {
185                        extractor->setUID(mUID);
186                    }
187                }
188            }
189        }
190
191        if (track != NULL) {
192            mSources.push(track);
193            int64_t durationUs;
194            if (meta->findInt64(kKeyDuration, &durationUs)) {
195                if (durationUs > mDurationUs) {
196                    mDurationUs = durationUs;
197                }
198            }
199
200            int32_t bitrate;
201            if (totalBitrate >= 0 && meta->findInt32(kKeyBitRate, &bitrate)) {
202                totalBitrate += bitrate;
203            } else {
204                totalBitrate = -1;
205            }
206        }
207    }
208
209    mBitrate = totalBitrate;
210
211    return OK;
212}
213
214void NuPlayer::GenericSource::checkDrmStatus(const sp<DataSource>& dataSource) {
215    dataSource->getDrmInfo(mDecryptHandle, &mDrmManagerClient);
216    if (mDecryptHandle != NULL) {
217        CHECK(mDrmManagerClient);
218        if (RightsStatus::RIGHTS_VALID != mDecryptHandle->status) {
219            sp<AMessage> msg = dupNotify();
220            msg->setInt32("what", kWhatDrmNoLicense);
221            msg->post();
222        }
223    }
224}
225
226int64_t NuPlayer::GenericSource::getLastReadPosition() {
227    if (mAudioTrack.mSource != NULL) {
228        return mAudioTimeUs;
229    } else if (mVideoTrack.mSource != NULL) {
230        return mVideoTimeUs;
231    } else {
232        return 0;
233    }
234}
235
236status_t NuPlayer::GenericSource::setBuffers(
237        bool audio, Vector<MediaBuffer *> &buffers) {
238    if (mIsWidevine && !audio) {
239        return mVideoTrack.mSource->setBuffers(buffers);
240    }
241    return INVALID_OPERATION;
242}
243
244NuPlayer::GenericSource::~GenericSource() {
245    if (mLooper != NULL) {
246        mLooper->unregisterHandler(id());
247        mLooper->stop();
248    }
249}
250
251void NuPlayer::GenericSource::prepareAsync() {
252    if (mLooper == NULL) {
253        mLooper = new ALooper;
254        mLooper->setName("generic");
255        mLooper->start();
256
257        mLooper->registerHandler(this);
258    }
259
260    sp<AMessage> msg = new AMessage(kWhatPrepareAsync, id());
261    msg->post();
262}
263
264void NuPlayer::GenericSource::onPrepareAsync() {
265    // delayed data source creation
266    if (mDataSource == NULL) {
267        if (!mUri.empty()) {
268            mIsWidevine = !strncasecmp(mUri.c_str(), "widevine://", 11);
269
270            mDataSource = DataSource::CreateFromURI(
271                   mHTTPService, mUri.c_str(), &mUriHeaders, &mContentType);
272        } else {
273            // set to false first, if the extractor
274            // comes back as secure, set it to true then.
275            mIsWidevine = false;
276
277            mDataSource = new FileSource(mFd, mOffset, mLength);
278        }
279
280        if (mDataSource == NULL) {
281            ALOGE("Failed to create data source!");
282            notifyPreparedAndCleanup(UNKNOWN_ERROR);
283            return;
284        }
285
286        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
287            mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get());
288        }
289
290        if (mIsWidevine || mCachedSource != NULL) {
291            schedulePollBuffering();
292        }
293    }
294
295    // check initial caching status
296    status_t err = prefillCacheIfNecessary();
297    if (err != OK) {
298        if (err == -EAGAIN) {
299            (new AMessage(kWhatPrepareAsync, id()))->post(200000);
300        } else {
301            ALOGE("Failed to prefill data cache!");
302            notifyPreparedAndCleanup(UNKNOWN_ERROR);
303        }
304        return;
305    }
306
307    // init extrator from data source
308    err = initFromDataSource();
309
310    if (err != OK) {
311        ALOGE("Failed to init from data source!");
312        notifyPreparedAndCleanup(err);
313        return;
314    }
315
316    if (mVideoTrack.mSource != NULL) {
317        notifyVideoSizeChanged(getFormat(false /* audio */));
318    }
319
320    notifyFlagsChanged(
321            (mIsWidevine ? FLAG_SECURE : 0)
322            | FLAG_CAN_PAUSE
323            | FLAG_CAN_SEEK_BACKWARD
324            | FLAG_CAN_SEEK_FORWARD
325            | FLAG_CAN_SEEK);
326
327    notifyPrepared();
328}
329
330void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
331    if (err != OK) {
332        mMetaDataSize = -1ll;
333        mContentType = "";
334        mSniffedMIME = "";
335        mDataSource.clear();
336        mCachedSource.clear();
337
338        cancelPollBuffering();
339    }
340    notifyPrepared(err);
341}
342
343status_t NuPlayer::GenericSource::prefillCacheIfNecessary() {
344    CHECK(mDataSource != NULL);
345
346    if (mCachedSource == NULL) {
347        // no prefill if the data source is not cached
348        return OK;
349    }
350
351    // We're not doing this for streams that appear to be audio-only
352    // streams to ensure that even low bandwidth streams start
353    // playing back fairly instantly.
354    if (!strncasecmp(mContentType.string(), "audio/", 6)) {
355        return OK;
356    }
357
358    // We're going to prefill the cache before trying to instantiate
359    // the extractor below, as the latter is an operation that otherwise
360    // could block on the datasource for a significant amount of time.
361    // During that time we'd be unable to abort the preparation phase
362    // without this prefill.
363
364    // Initially make sure we have at least 192 KB for the sniff
365    // to complete without blocking.
366    static const size_t kMinBytesForSniffing = 192 * 1024;
367    static const size_t kDefaultMetaSize = 200000;
368
369    status_t finalStatus;
370
371    size_t cachedDataRemaining =
372            mCachedSource->approxDataRemaining(&finalStatus);
373
374    if (finalStatus != OK || (mMetaDataSize >= 0
375            && (off64_t)cachedDataRemaining >= mMetaDataSize)) {
376        ALOGV("stop caching, status %d, "
377                "metaDataSize %lld, cachedDataRemaining %zu",
378                finalStatus, mMetaDataSize, cachedDataRemaining);
379        return OK;
380    }
381
382    ALOGV("now cached %zu bytes of data", cachedDataRemaining);
383
384    if (mMetaDataSize < 0
385            && cachedDataRemaining >= kMinBytesForSniffing) {
386        String8 tmp;
387        float confidence;
388        sp<AMessage> meta;
389        if (!mCachedSource->sniff(&tmp, &confidence, &meta)) {
390            return UNKNOWN_ERROR;
391        }
392
393        // We successfully identified the file's extractor to
394        // be, remember this mime type so we don't have to
395        // sniff it again when we call MediaExtractor::Create()
396        mSniffedMIME = tmp.string();
397
398        if (meta == NULL
399                || !meta->findInt64("meta-data-size",
400                        reinterpret_cast<int64_t*>(&mMetaDataSize))) {
401            mMetaDataSize = kDefaultMetaSize;
402        }
403
404        if (mMetaDataSize < 0ll) {
405            ALOGE("invalid metaDataSize = %lld bytes", mMetaDataSize);
406            return UNKNOWN_ERROR;
407        }
408    }
409
410    return -EAGAIN;
411}
412
413void NuPlayer::GenericSource::start() {
414    ALOGI("start");
415
416    if (mAudioTrack.mSource != NULL) {
417        CHECK_EQ(mAudioTrack.mSource->start(), (status_t)OK);
418        mAudioTrack.mPackets =
419            new AnotherPacketSource(mAudioTrack.mSource->getFormat());
420
421        readBuffer(MEDIA_TRACK_TYPE_AUDIO);
422    }
423
424    if (mVideoTrack.mSource != NULL) {
425        CHECK_EQ(mVideoTrack.mSource->start(), (status_t)OK);
426        mVideoTrack.mPackets =
427            new AnotherPacketSource(mVideoTrack.mSource->getFormat());
428
429        readBuffer(MEDIA_TRACK_TYPE_VIDEO);
430    }
431
432    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
433    mStarted = true;
434}
435
436void NuPlayer::GenericSource::stop() {
437    // nothing to do, just account for DRM playback status
438    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
439    mStarted = false;
440}
441
442void NuPlayer::GenericSource::pause() {
443    // nothing to do, just account for DRM playback status
444    setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
445    mStarted = false;
446}
447
448void NuPlayer::GenericSource::resume() {
449    // nothing to do, just account for DRM playback status
450    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
451    mStarted = true;
452}
453
454void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
455    if (mDecryptHandle != NULL) {
456        mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
457    }
458}
459
460status_t NuPlayer::GenericSource::feedMoreTSData() {
461    return OK;
462}
463
464void NuPlayer::GenericSource::schedulePollBuffering() {
465    sp<AMessage> msg = new AMessage(kWhatPollBuffering, id());
466    msg->setInt32("generation", mPollBufferingGeneration);
467    msg->post(1000000ll);
468}
469
470void NuPlayer::GenericSource::cancelPollBuffering() {
471    ++mPollBufferingGeneration;
472}
473
474void NuPlayer::GenericSource::notifyBufferingUpdate(int percentage) {
475    sp<AMessage> msg = dupNotify();
476    msg->setInt32("what", kWhatBufferingUpdate);
477    msg->setInt32("percentage", percentage);
478    msg->post();
479}
480
481void NuPlayer::GenericSource::onPollBuffering() {
482    status_t finalStatus = UNKNOWN_ERROR;
483    int64_t cachedDurationUs = 0ll;
484
485    if (mCachedSource != NULL) {
486        size_t cachedDataRemaining =
487                mCachedSource->approxDataRemaining(&finalStatus);
488
489        if (finalStatus == OK) {
490            off64_t size;
491            int64_t bitrate = 0ll;
492            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
493                bitrate = size * 8000000ll / mDurationUs;
494            } else if (mBitrate > 0) {
495                bitrate = mBitrate;
496            }
497            if (bitrate > 0) {
498                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
499            }
500        }
501    } else if (mWVMExtractor != NULL) {
502        cachedDurationUs
503            = mWVMExtractor->getCachedDurationUs(&finalStatus);
504    }
505
506    if (finalStatus == ERROR_END_OF_STREAM) {
507        notifyBufferingUpdate(100);
508        cancelPollBuffering();
509        return;
510    } else if (cachedDurationUs > 0ll && mDurationUs > 0ll) {
511        int percentage = 100.0 * cachedDurationUs / mDurationUs;
512        if (percentage > 100) {
513            percentage = 100;
514        }
515
516        notifyBufferingUpdate(percentage);
517    }
518
519    schedulePollBuffering();
520}
521
522
523void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
524    switch (msg->what()) {
525      case kWhatPrepareAsync:
526      {
527          onPrepareAsync();
528          break;
529      }
530      case kWhatFetchSubtitleData:
531      {
532          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
533                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
534          break;
535      }
536
537      case kWhatFetchTimedTextData:
538      {
539          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
540                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
541          break;
542      }
543
544      case kWhatSendSubtitleData:
545      {
546          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
547                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
548          break;
549      }
550
551      case kWhatSendTimedTextData:
552      {
553          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
554                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
555          break;
556      }
557
558      case kWhatChangeAVSource:
559      {
560          int32_t trackIndex;
561          CHECK(msg->findInt32("trackIndex", &trackIndex));
562          const sp<MediaSource> source = mSources.itemAt(trackIndex);
563
564          Track* track;
565          const char *mime;
566          media_track_type trackType, counterpartType;
567          sp<MetaData> meta = source->getFormat();
568          meta->findCString(kKeyMIMEType, &mime);
569          if (!strncasecmp(mime, "audio/", 6)) {
570              track = &mAudioTrack;
571              trackType = MEDIA_TRACK_TYPE_AUDIO;
572              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
573          } else {
574              CHECK(!strncasecmp(mime, "video/", 6));
575              track = &mVideoTrack;
576              trackType = MEDIA_TRACK_TYPE_VIDEO;
577              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
578          }
579
580
581          if (track->mSource != NULL) {
582              track->mSource->stop();
583          }
584          track->mSource = source;
585          track->mSource->start();
586          track->mIndex = trackIndex;
587
588          status_t avail;
589          if (!track->mPackets->hasBufferAvailable(&avail)) {
590              // sync from other source
591              TRESPASS();
592              break;
593          }
594
595          int64_t timeUs, actualTimeUs;
596          const bool formatChange = true;
597          sp<AMessage> latestMeta = track->mPackets->getLatestEnqueuedMeta();
598          CHECK(latestMeta != NULL && latestMeta->findInt64("timeUs", &timeUs));
599          readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
600          readBuffer(counterpartType, -1, NULL, formatChange);
601          ALOGV("timeUs %lld actualTimeUs %lld", timeUs, actualTimeUs);
602
603          break;
604      }
605      case kWhatPollBuffering:
606      {
607          int32_t generation;
608          CHECK(msg->findInt32("generation", &generation));
609          if (generation == mPollBufferingGeneration) {
610              onPollBuffering();
611          }
612          break;
613      }
614      default:
615          Source::onMessageReceived(msg);
616          break;
617    }
618}
619
620void NuPlayer::GenericSource::fetchTextData(
621        uint32_t sendWhat,
622        media_track_type type,
623        int32_t curGen,
624        sp<AnotherPacketSource> packets,
625        sp<AMessage> msg) {
626    int32_t msgGeneration;
627    CHECK(msg->findInt32("generation", &msgGeneration));
628    if (msgGeneration != curGen) {
629        // stale
630        return;
631    }
632
633    int32_t avail;
634    if (packets->hasBufferAvailable(&avail)) {
635        return;
636    }
637
638    int64_t timeUs;
639    CHECK(msg->findInt64("timeUs", &timeUs));
640
641    int64_t subTimeUs;
642    readBuffer(type, timeUs, &subTimeUs);
643
644    int64_t delayUs = subTimeUs - timeUs;
645    if (msg->what() == kWhatFetchSubtitleData) {
646        const int64_t oneSecUs = 1000000ll;
647        delayUs -= oneSecUs;
648    }
649    sp<AMessage> msg2 = new AMessage(sendWhat, id());
650    msg2->setInt32("generation", msgGeneration);
651    msg2->post(delayUs < 0 ? 0 : delayUs);
652}
653
654void NuPlayer::GenericSource::sendTextData(
655        uint32_t what,
656        media_track_type type,
657        int32_t curGen,
658        sp<AnotherPacketSource> packets,
659        sp<AMessage> msg) {
660    int32_t msgGeneration;
661    CHECK(msg->findInt32("generation", &msgGeneration));
662    if (msgGeneration != curGen) {
663        // stale
664        return;
665    }
666
667    int64_t subTimeUs;
668    if (packets->nextBufferTime(&subTimeUs) != OK) {
669        return;
670    }
671
672    int64_t nextSubTimeUs;
673    readBuffer(type, -1, &nextSubTimeUs);
674
675    sp<ABuffer> buffer;
676    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
677    if (dequeueStatus == OK) {
678        sp<AMessage> notify = dupNotify();
679        notify->setInt32("what", what);
680        notify->setBuffer("buffer", buffer);
681        notify->post();
682
683        const int64_t delayUs = nextSubTimeUs - subTimeUs;
684        msg->post(delayUs < 0 ? 0 : delayUs);
685    }
686}
687
688sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
689    sp<MediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
690
691    if (source == NULL) {
692        return NULL;
693    }
694
695    return source->getFormat();
696}
697
698status_t NuPlayer::GenericSource::dequeueAccessUnit(
699        bool audio, sp<ABuffer> *accessUnit) {
700    Track *track = audio ? &mAudioTrack : &mVideoTrack;
701
702    if (track->mSource == NULL) {
703        return -EWOULDBLOCK;
704    }
705
706    if (mIsWidevine && !audio) {
707        // try to read a buffer as we may not have been able to the last time
708        readBuffer(MEDIA_TRACK_TYPE_VIDEO, -1ll);
709    }
710
711    status_t finalResult;
712    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
713        return (finalResult == OK ? -EWOULDBLOCK : finalResult);
714    }
715
716    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
717
718    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
719        readBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO, -1ll);
720    }
721
722    if (mSubtitleTrack.mSource == NULL && mTimedTextTrack.mSource == NULL) {
723        return result;
724    }
725
726    if (mSubtitleTrack.mSource != NULL) {
727        CHECK(mSubtitleTrack.mPackets != NULL);
728    }
729    if (mTimedTextTrack.mSource != NULL) {
730        CHECK(mTimedTextTrack.mPackets != NULL);
731    }
732
733    if (result != OK) {
734        if (mSubtitleTrack.mSource != NULL) {
735            mSubtitleTrack.mPackets->clear();
736            mFetchSubtitleDataGeneration++;
737        }
738        if (mTimedTextTrack.mSource != NULL) {
739            mTimedTextTrack.mPackets->clear();
740            mFetchTimedTextDataGeneration++;
741        }
742        return result;
743    }
744
745    int64_t timeUs;
746    status_t eosResult; // ignored
747    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
748
749    if (mSubtitleTrack.mSource != NULL
750            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
751        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
752        msg->setInt64("timeUs", timeUs);
753        msg->setInt32("generation", mFetchSubtitleDataGeneration);
754        msg->post();
755    }
756
757    if (mTimedTextTrack.mSource != NULL
758            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
759        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
760        msg->setInt64("timeUs", timeUs);
761        msg->setInt32("generation", mFetchTimedTextDataGeneration);
762        msg->post();
763    }
764
765    return result;
766}
767
768status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
769    *durationUs = mDurationUs;
770    return OK;
771}
772
773size_t NuPlayer::GenericSource::getTrackCount() const {
774    return mSources.size();
775}
776
777sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
778    size_t trackCount = mSources.size();
779    if (trackIndex >= trackCount) {
780        return NULL;
781    }
782
783    sp<AMessage> format = new AMessage();
784    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
785
786    const char *mime;
787    CHECK(meta->findCString(kKeyMIMEType, &mime));
788
789    int32_t trackType;
790    if (!strncasecmp(mime, "video/", 6)) {
791        trackType = MEDIA_TRACK_TYPE_VIDEO;
792    } else if (!strncasecmp(mime, "audio/", 6)) {
793        trackType = MEDIA_TRACK_TYPE_AUDIO;
794    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
795        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
796    } else {
797        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
798    }
799    format->setInt32("type", trackType);
800
801    const char *lang;
802    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
803        lang = "und";
804    }
805    format->setString("language", lang);
806
807    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
808        format->setString("mime", mime);
809
810        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
811        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
812        meta->findInt32(kKeyTrackIsDefault, &isDefault);
813        meta->findInt32(kKeyTrackIsForced, &isForced);
814
815        format->setInt32("auto", !!isAutoselect);
816        format->setInt32("default", !!isDefault);
817        format->setInt32("forced", !!isForced);
818    }
819
820    return format;
821}
822
823ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
824    const Track *track = NULL;
825    switch (type) {
826    case MEDIA_TRACK_TYPE_VIDEO:
827        track = &mVideoTrack;
828        break;
829    case MEDIA_TRACK_TYPE_AUDIO:
830        track = &mAudioTrack;
831        break;
832    case MEDIA_TRACK_TYPE_TIMEDTEXT:
833        track = &mTimedTextTrack;
834        break;
835    case MEDIA_TRACK_TYPE_SUBTITLE:
836        track = &mSubtitleTrack;
837        break;
838    default:
839        break;
840    }
841
842    if (track != NULL && track->mSource != NULL) {
843        return track->mIndex;
844    }
845
846    return -1;
847}
848
849status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select) {
850    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
851    if (trackIndex >= mSources.size()) {
852        return BAD_INDEX;
853    }
854
855    if (!select) {
856        Track* track = NULL;
857        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
858            track = &mSubtitleTrack;
859            mFetchSubtitleDataGeneration++;
860        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
861            track = &mTimedTextTrack;
862            mFetchTimedTextDataGeneration++;
863        }
864        if (track == NULL) {
865            return INVALID_OPERATION;
866        }
867        track->mSource->stop();
868        track->mSource = NULL;
869        track->mPackets->clear();
870        return OK;
871    }
872
873    const sp<MediaSource> source = mSources.itemAt(trackIndex);
874    sp<MetaData> meta = source->getFormat();
875    const char *mime;
876    CHECK(meta->findCString(kKeyMIMEType, &mime));
877    if (!strncasecmp(mime, "text/", 5)) {
878        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
879        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
880        if (track->mSource != NULL && track->mIndex == trackIndex) {
881            return OK;
882        }
883        track->mIndex = trackIndex;
884        if (track->mSource != NULL) {
885            track->mSource->stop();
886        }
887        track->mSource = mSources.itemAt(trackIndex);
888        track->mSource->start();
889        if (track->mPackets == NULL) {
890            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
891        } else {
892            track->mPackets->clear();
893            track->mPackets->setFormat(track->mSource->getFormat());
894
895        }
896
897        if (isSubtitle) {
898            mFetchSubtitleDataGeneration++;
899        } else {
900            mFetchTimedTextDataGeneration++;
901        }
902
903        return OK;
904    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
905        bool audio = !strncasecmp(mime, "audio/", 6);
906        Track *track = audio ? &mAudioTrack : &mVideoTrack;
907        if (track->mSource != NULL && track->mIndex == trackIndex) {
908            return OK;
909        }
910
911        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, id());
912        msg->setInt32("trackIndex", trackIndex);
913        msg->post();
914        return OK;
915    }
916
917    return INVALID_OPERATION;
918}
919
920status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs) {
921    if (mVideoTrack.mSource != NULL) {
922        int64_t actualTimeUs;
923        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, &actualTimeUs);
924
925        seekTimeUs = actualTimeUs;
926    }
927
928    if (mAudioTrack.mSource != NULL) {
929        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
930    }
931
932    setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
933    if (!mStarted) {
934        setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
935    }
936    return OK;
937}
938
939sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
940        MediaBuffer* mb,
941        media_track_type trackType,
942        int64_t *actualTimeUs) {
943    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
944    size_t outLength = mb->range_length();
945
946    if (audio && mAudioIsVorbis) {
947        outLength += sizeof(int32_t);
948    }
949
950    sp<ABuffer> ab;
951    if (mIsWidevine && !audio) {
952        // data is already provided in the buffer
953        ab = new ABuffer(NULL, mb->range_length());
954        ab->meta()->setPointer("mediaBuffer", mb);
955        mb->add_ref();
956    } else {
957        ab = new ABuffer(outLength);
958        memcpy(ab->data(),
959               (const uint8_t *)mb->data() + mb->range_offset(),
960               mb->range_length());
961    }
962
963    if (audio && mAudioIsVorbis) {
964        int32_t numPageSamples;
965        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
966            numPageSamples = -1;
967        }
968
969        uint8_t* abEnd = ab->data() + mb->range_length();
970        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
971    }
972
973    sp<AMessage> meta = ab->meta();
974
975    int64_t timeUs;
976    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
977    meta->setInt64("timeUs", timeUs);
978
979    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
980        const char *mime;
981        CHECK(mTimedTextTrack.mSource != NULL
982                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
983        meta->setString("mime", mime);
984    }
985
986    int64_t durationUs;
987    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
988        meta->setInt64("durationUs", durationUs);
989    }
990
991    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
992        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
993    }
994
995    if (actualTimeUs) {
996        *actualTimeUs = timeUs;
997    }
998
999    mb->release();
1000    mb = NULL;
1001
1002    return ab;
1003}
1004
1005void NuPlayer::GenericSource::readBuffer(
1006        media_track_type trackType, int64_t seekTimeUs, int64_t *actualTimeUs, bool formatChange) {
1007    Track *track;
1008    switch (trackType) {
1009        case MEDIA_TRACK_TYPE_VIDEO:
1010            track = &mVideoTrack;
1011            break;
1012        case MEDIA_TRACK_TYPE_AUDIO:
1013            track = &mAudioTrack;
1014            break;
1015        case MEDIA_TRACK_TYPE_SUBTITLE:
1016            track = &mSubtitleTrack;
1017            break;
1018        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1019            track = &mTimedTextTrack;
1020            break;
1021        default:
1022            TRESPASS();
1023    }
1024
1025    if (track->mSource == NULL) {
1026        return;
1027    }
1028
1029    if (actualTimeUs) {
1030        *actualTimeUs = seekTimeUs;
1031    }
1032
1033    MediaSource::ReadOptions options;
1034
1035    bool seeking = false;
1036
1037    if (seekTimeUs >= 0) {
1038        options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
1039        seeking = true;
1040    }
1041
1042    if (mIsWidevine && trackType != MEDIA_TRACK_TYPE_AUDIO) {
1043        options.setNonBlocking();
1044    }
1045
1046    for (;;) {
1047        MediaBuffer *mbuf;
1048        status_t err = track->mSource->read(&mbuf, &options);
1049
1050        options.clearSeekTo();
1051
1052        if (err == OK) {
1053            int64_t timeUs;
1054            CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs));
1055            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1056                mAudioTimeUs = timeUs;
1057            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1058                mVideoTimeUs = timeUs;
1059            }
1060
1061            // formatChange && seeking: track whose source is changed during selection
1062            // formatChange && !seeking: track whose source is not changed during selection
1063            // !formatChange: normal seek
1064            if ((seeking || formatChange)
1065                    && (trackType == MEDIA_TRACK_TYPE_AUDIO
1066                    || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1067                ATSParser::DiscontinuityType type = formatChange
1068                        ? (seeking
1069                                ? ATSParser::DISCONTINUITY_FORMATCHANGE
1070                                : ATSParser::DISCONTINUITY_NONE)
1071                        : ATSParser::DISCONTINUITY_SEEK;
1072                track->mPackets->queueDiscontinuity( type, NULL, true /* discard */);
1073            }
1074
1075            sp<ABuffer> buffer = mediaBufferToABuffer(mbuf, trackType, actualTimeUs);
1076            track->mPackets->queueAccessUnit(buffer);
1077            break;
1078        } else if (err == WOULD_BLOCK) {
1079            break;
1080        } else if (err == INFO_FORMAT_CHANGED) {
1081#if 0
1082            track->mPackets->queueDiscontinuity(
1083                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1084                    NULL,
1085                    false /* discard */);
1086#endif
1087        } else {
1088            track->mPackets->signalEOS(err);
1089            break;
1090        }
1091    }
1092}
1093
1094}  // namespace android
1095