GenericSource.cpp revision fef808d42a9c94b0b5ef3c3d5fb0a090edbc42da 
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        mDataSource.clear();
378        mCachedSource.clear();
379        mHttpSource.clear();
380
381        cancelPollBuffering();
382    }
383    notifyPrepared(err);
384}
385
386status_t NuPlayer::GenericSource::prefillCacheIfNecessary() {
387    CHECK(mDataSource != NULL);
388
389    if (mCachedSource == NULL) {
390        // no prefill if the data source is not cached
391        return OK;
392    }
393
394    // We're not doing this for streams that appear to be audio-only
395    // streams to ensure that even low bandwidth streams start
396    // playing back fairly instantly.
397    if (!strncasecmp(mContentType.string(), "audio/", 6)) {
398        return OK;
399    }
400
401    // We're going to prefill the cache before trying to instantiate
402    // the extractor below, as the latter is an operation that otherwise
403    // could block on the datasource for a significant amount of time.
404    // During that time we'd be unable to abort the preparation phase
405    // without this prefill.
406
407    // Initially make sure we have at least 192 KB for the sniff
408    // to complete without blocking.
409    static const size_t kMinBytesForSniffing = 192 * 1024;
410    static const size_t kDefaultMetaSize = 200000;
411
412    status_t finalStatus;
413
414    size_t cachedDataRemaining =
415            mCachedSource->approxDataRemaining(&finalStatus);
416
417    if (finalStatus != OK || (mMetaDataSize >= 0
418            && (off64_t)cachedDataRemaining >= mMetaDataSize)) {
419        ALOGV("stop caching, status %d, "
420                "metaDataSize %lld, cachedDataRemaining %zu",
421                finalStatus, mMetaDataSize, cachedDataRemaining);
422        return OK;
423    }
424
425    ALOGV("now cached %zu bytes of data", cachedDataRemaining);
426
427    if (mMetaDataSize < 0
428            && cachedDataRemaining >= kMinBytesForSniffing) {
429        String8 tmp;
430        float confidence;
431        sp<AMessage> meta;
432        if (!mCachedSource->sniff(&tmp, &confidence, &meta)) {
433            return UNKNOWN_ERROR;
434        }
435
436        // We successfully identified the file's extractor to
437        // be, remember this mime type so we don't have to
438        // sniff it again when we call MediaExtractor::Create()
439        mSniffedMIME = tmp.string();
440
441        if (meta == NULL
442                || !meta->findInt64("meta-data-size",
443                        reinterpret_cast<int64_t*>(&mMetaDataSize))) {
444            mMetaDataSize = kDefaultMetaSize;
445        }
446
447        if (mMetaDataSize < 0ll) {
448            ALOGE("invalid metaDataSize = %lld bytes", mMetaDataSize);
449            return UNKNOWN_ERROR;
450        }
451    }
452
453    return -EAGAIN;
454}
455
456void NuPlayer::GenericSource::start() {
457    ALOGI("start");
458
459    mStopRead = false;
460    if (mAudioTrack.mSource != NULL) {
461        CHECK_EQ(mAudioTrack.mSource->start(), (status_t)OK);
462
463        postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
464    }
465
466    if (mVideoTrack.mSource != NULL) {
467        CHECK_EQ(mVideoTrack.mSource->start(), (status_t)OK);
468
469        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
470    }
471
472    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
473    mStarted = true;
474}
475
476void NuPlayer::GenericSource::stop() {
477    // nothing to do, just account for DRM playback status
478    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
479    mStarted = false;
480    if (mIsWidevine) {
481        // For a widevine source we need to prevent any further reads.
482        sp<AMessage> msg = new AMessage(kWhatStopWidevine, id());
483        sp<AMessage> response;
484        (void) msg->postAndAwaitResponse(&response);
485    }
486}
487
488void NuPlayer::GenericSource::pause() {
489    // nothing to do, just account for DRM playback status
490    setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
491    mStarted = false;
492}
493
494void NuPlayer::GenericSource::resume() {
495    // nothing to do, just account for DRM playback status
496    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
497    mStarted = true;
498}
499
500void NuPlayer::GenericSource::disconnect() {
501    if (mDataSource != NULL) {
502        // disconnect data source
503        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
504            static_cast<NuCachedSource2 *>(mDataSource.get())->disconnect();
505        }
506    } else if (mHttpSource != NULL) {
507        static_cast<HTTPBase *>(mHttpSource.get())->disconnect();
508    }
509}
510
511void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
512    if (mDecryptHandle != NULL) {
513        mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
514    }
515    mSubtitleTrack.mPackets = new AnotherPacketSource(NULL);
516    mTimedTextTrack.mPackets = new AnotherPacketSource(NULL);
517}
518
519status_t NuPlayer::GenericSource::feedMoreTSData() {
520    return OK;
521}
522
523void NuPlayer::GenericSource::schedulePollBuffering() {
524    sp<AMessage> msg = new AMessage(kWhatPollBuffering, id());
525    msg->setInt32("generation", mPollBufferingGeneration);
526    msg->post(1000000ll);
527}
528
529void NuPlayer::GenericSource::cancelPollBuffering() {
530    ++mPollBufferingGeneration;
531}
532
533void NuPlayer::GenericSource::notifyBufferingUpdate(int percentage) {
534    sp<AMessage> msg = dupNotify();
535    msg->setInt32("what", kWhatBufferingUpdate);
536    msg->setInt32("percentage", percentage);
537    msg->post();
538}
539
540void NuPlayer::GenericSource::onPollBuffering() {
541    status_t finalStatus = UNKNOWN_ERROR;
542    int64_t cachedDurationUs = 0ll;
543
544    if (mCachedSource != NULL) {
545        size_t cachedDataRemaining =
546                mCachedSource->approxDataRemaining(&finalStatus);
547
548        if (finalStatus == OK) {
549            off64_t size;
550            int64_t bitrate = 0ll;
551            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
552                bitrate = size * 8000000ll / mDurationUs;
553            } else if (mBitrate > 0) {
554                bitrate = mBitrate;
555            }
556            if (bitrate > 0) {
557                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
558            }
559        }
560    } else if (mWVMExtractor != NULL) {
561        cachedDurationUs
562            = mWVMExtractor->getCachedDurationUs(&finalStatus);
563    }
564
565    if (finalStatus == ERROR_END_OF_STREAM) {
566        notifyBufferingUpdate(100);
567        cancelPollBuffering();
568        return;
569    } else if (cachedDurationUs > 0ll && mDurationUs > 0ll) {
570        int percentage = 100.0 * cachedDurationUs / mDurationUs;
571        if (percentage > 100) {
572            percentage = 100;
573        }
574
575        notifyBufferingUpdate(percentage);
576    }
577
578    schedulePollBuffering();
579}
580
581
582void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
583    switch (msg->what()) {
584      case kWhatPrepareAsync:
585      {
586          onPrepareAsync();
587          break;
588      }
589      case kWhatFetchSubtitleData:
590      {
591          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
592                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
593          break;
594      }
595
596      case kWhatFetchTimedTextData:
597      {
598          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
599                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
600          break;
601      }
602
603      case kWhatSendSubtitleData:
604      {
605          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
606                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
607          break;
608      }
609
610      case kWhatSendTimedTextData:
611      {
612          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
613                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
614          break;
615      }
616
617      case kWhatChangeAVSource:
618      {
619          int32_t trackIndex;
620          CHECK(msg->findInt32("trackIndex", &trackIndex));
621          const sp<MediaSource> source = mSources.itemAt(trackIndex);
622
623          Track* track;
624          const char *mime;
625          media_track_type trackType, counterpartType;
626          sp<MetaData> meta = source->getFormat();
627          meta->findCString(kKeyMIMEType, &mime);
628          if (!strncasecmp(mime, "audio/", 6)) {
629              track = &mAudioTrack;
630              trackType = MEDIA_TRACK_TYPE_AUDIO;
631              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
632          } else {
633              CHECK(!strncasecmp(mime, "video/", 6));
634              track = &mVideoTrack;
635              trackType = MEDIA_TRACK_TYPE_VIDEO;
636              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
637          }
638
639
640          if (track->mSource != NULL) {
641              track->mSource->stop();
642          }
643          track->mSource = source;
644          track->mSource->start();
645          track->mIndex = trackIndex;
646
647          status_t avail;
648          if (!track->mPackets->hasBufferAvailable(&avail)) {
649              // sync from other source
650              TRESPASS();
651              break;
652          }
653
654          int64_t timeUs, actualTimeUs;
655          const bool formatChange = true;
656          sp<AMessage> latestMeta = track->mPackets->getLatestEnqueuedMeta();
657          CHECK(latestMeta != NULL && latestMeta->findInt64("timeUs", &timeUs));
658          readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
659          readBuffer(counterpartType, -1, NULL, formatChange);
660          ALOGV("timeUs %lld actualTimeUs %lld", timeUs, actualTimeUs);
661
662          break;
663      }
664      case kWhatPollBuffering:
665      {
666          int32_t generation;
667          CHECK(msg->findInt32("generation", &generation));
668          if (generation == mPollBufferingGeneration) {
669              onPollBuffering();
670          }
671          break;
672      }
673
674      case kWhatGetFormat:
675      {
676          onGetFormatMeta(msg);
677          break;
678      }
679
680      case kWhatGetSelectedTrack:
681      {
682          onGetSelectedTrack(msg);
683          break;
684      }
685
686      case kWhatSelectTrack:
687      {
688          onSelectTrack(msg);
689          break;
690      }
691
692      case kWhatSeek:
693      {
694          onSeek(msg);
695          break;
696      }
697
698      case kWhatReadBuffer:
699      {
700          onReadBuffer(msg);
701          break;
702      }
703
704      case kWhatStopWidevine:
705      {
706          // mStopRead is only used for Widevine to prevent the video source
707          // from being read while the associated video decoder is shutting down.
708          mStopRead = true;
709          if (mVideoTrack.mSource != NULL) {
710              mVideoTrack.mPackets->clear();
711          }
712          sp<AMessage> response = new AMessage;
713          uint32_t replyID;
714          CHECK(msg->senderAwaitsResponse(&replyID));
715          response->postReply(replyID);
716          break;
717      }
718      default:
719          Source::onMessageReceived(msg);
720          break;
721    }
722}
723
724void NuPlayer::GenericSource::fetchTextData(
725        uint32_t sendWhat,
726        media_track_type type,
727        int32_t curGen,
728        sp<AnotherPacketSource> packets,
729        sp<AMessage> msg) {
730    int32_t msgGeneration;
731    CHECK(msg->findInt32("generation", &msgGeneration));
732    if (msgGeneration != curGen) {
733        // stale
734        return;
735    }
736
737    int32_t avail;
738    if (packets->hasBufferAvailable(&avail)) {
739        return;
740    }
741
742    int64_t timeUs;
743    CHECK(msg->findInt64("timeUs", &timeUs));
744
745    int64_t subTimeUs;
746    readBuffer(type, timeUs, &subTimeUs);
747
748    int64_t delayUs = subTimeUs - timeUs;
749    if (msg->what() == kWhatFetchSubtitleData) {
750        const int64_t oneSecUs = 1000000ll;
751        delayUs -= oneSecUs;
752    }
753    sp<AMessage> msg2 = new AMessage(sendWhat, id());
754    msg2->setInt32("generation", msgGeneration);
755    msg2->post(delayUs < 0 ? 0 : delayUs);
756}
757
758void NuPlayer::GenericSource::sendTextData(
759        uint32_t what,
760        media_track_type type,
761        int32_t curGen,
762        sp<AnotherPacketSource> packets,
763        sp<AMessage> msg) {
764    int32_t msgGeneration;
765    CHECK(msg->findInt32("generation", &msgGeneration));
766    if (msgGeneration != curGen) {
767        // stale
768        return;
769    }
770
771    int64_t subTimeUs;
772    if (packets->nextBufferTime(&subTimeUs) != OK) {
773        return;
774    }
775
776    int64_t nextSubTimeUs;
777    readBuffer(type, -1, &nextSubTimeUs);
778
779    sp<ABuffer> buffer;
780    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
781    if (dequeueStatus == OK) {
782        sp<AMessage> notify = dupNotify();
783        notify->setInt32("what", what);
784        notify->setBuffer("buffer", buffer);
785        notify->post();
786
787        const int64_t delayUs = nextSubTimeUs - subTimeUs;
788        msg->post(delayUs < 0 ? 0 : delayUs);
789    }
790}
791
792sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
793    sp<AMessage> msg = new AMessage(kWhatGetFormat, id());
794    msg->setInt32("audio", audio);
795
796    sp<AMessage> response;
797    void *format;
798    status_t err = msg->postAndAwaitResponse(&response);
799    if (err == OK && response != NULL) {
800        CHECK(response->findPointer("format", &format));
801        return (MetaData *)format;
802    } else {
803        return NULL;
804    }
805}
806
807void NuPlayer::GenericSource::onGetFormatMeta(sp<AMessage> msg) const {
808    int32_t audio;
809    CHECK(msg->findInt32("audio", &audio));
810
811    sp<AMessage> response = new AMessage;
812    sp<MetaData> format = doGetFormatMeta(audio);
813    response->setPointer("format", format.get());
814
815    uint32_t replyID;
816    CHECK(msg->senderAwaitsResponse(&replyID));
817    response->postReply(replyID);
818}
819
820sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
821    sp<MediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
822
823    if (source == NULL) {
824        return NULL;
825    }
826
827    return source->getFormat();
828}
829
830status_t NuPlayer::GenericSource::dequeueAccessUnit(
831        bool audio, sp<ABuffer> *accessUnit) {
832    Track *track = audio ? &mAudioTrack : &mVideoTrack;
833
834    if (track->mSource == NULL) {
835        return -EWOULDBLOCK;
836    }
837
838    if (mIsWidevine && !audio) {
839        // try to read a buffer as we may not have been able to the last time
840        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
841    }
842
843    status_t finalResult;
844    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
845        return (finalResult == OK ? -EWOULDBLOCK : finalResult);
846    }
847
848    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
849
850    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
851        postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
852    }
853
854    if (result != OK) {
855        if (mSubtitleTrack.mSource != NULL) {
856            mSubtitleTrack.mPackets->clear();
857            mFetchSubtitleDataGeneration++;
858        }
859        if (mTimedTextTrack.mSource != NULL) {
860            mTimedTextTrack.mPackets->clear();
861            mFetchTimedTextDataGeneration++;
862        }
863        return result;
864    }
865
866    int64_t timeUs;
867    status_t eosResult; // ignored
868    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
869
870    if (mSubtitleTrack.mSource != NULL
871            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
872        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
873        msg->setInt64("timeUs", timeUs);
874        msg->setInt32("generation", mFetchSubtitleDataGeneration);
875        msg->post();
876    }
877
878    if (mTimedTextTrack.mSource != NULL
879            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
880        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
881        msg->setInt64("timeUs", timeUs);
882        msg->setInt32("generation", mFetchTimedTextDataGeneration);
883        msg->post();
884    }
885
886    return result;
887}
888
889status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
890    *durationUs = mDurationUs;
891    return OK;
892}
893
894size_t NuPlayer::GenericSource::getTrackCount() const {
895    return mSources.size();
896}
897
898sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
899    size_t trackCount = mSources.size();
900    if (trackIndex >= trackCount) {
901        return NULL;
902    }
903
904    sp<AMessage> format = new AMessage();
905    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
906
907    const char *mime;
908    CHECK(meta->findCString(kKeyMIMEType, &mime));
909
910    int32_t trackType;
911    if (!strncasecmp(mime, "video/", 6)) {
912        trackType = MEDIA_TRACK_TYPE_VIDEO;
913    } else if (!strncasecmp(mime, "audio/", 6)) {
914        trackType = MEDIA_TRACK_TYPE_AUDIO;
915    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
916        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
917    } else {
918        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
919    }
920    format->setInt32("type", trackType);
921
922    const char *lang;
923    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
924        lang = "und";
925    }
926    format->setString("language", lang);
927
928    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
929        format->setString("mime", mime);
930
931        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
932        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
933        meta->findInt32(kKeyTrackIsDefault, &isDefault);
934        meta->findInt32(kKeyTrackIsForced, &isForced);
935
936        format->setInt32("auto", !!isAutoselect);
937        format->setInt32("default", !!isDefault);
938        format->setInt32("forced", !!isForced);
939    }
940
941    return format;
942}
943
944ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
945    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, id());
946    msg->setInt32("type", type);
947
948    sp<AMessage> response;
949    int32_t index;
950    status_t err = msg->postAndAwaitResponse(&response);
951    if (err == OK && response != NULL) {
952        CHECK(response->findInt32("index", &index));
953        return index;
954    } else {
955        return -1;
956    }
957}
958
959void NuPlayer::GenericSource::onGetSelectedTrack(sp<AMessage> msg) const {
960    int32_t tmpType;
961    CHECK(msg->findInt32("type", &tmpType));
962    media_track_type type = (media_track_type)tmpType;
963
964    sp<AMessage> response = new AMessage;
965    ssize_t index = doGetSelectedTrack(type);
966    response->setInt32("index", index);
967
968    uint32_t replyID;
969    CHECK(msg->senderAwaitsResponse(&replyID));
970    response->postReply(replyID);
971}
972
973ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
974    const Track *track = NULL;
975    switch (type) {
976    case MEDIA_TRACK_TYPE_VIDEO:
977        track = &mVideoTrack;
978        break;
979    case MEDIA_TRACK_TYPE_AUDIO:
980        track = &mAudioTrack;
981        break;
982    case MEDIA_TRACK_TYPE_TIMEDTEXT:
983        track = &mTimedTextTrack;
984        break;
985    case MEDIA_TRACK_TYPE_SUBTITLE:
986        track = &mSubtitleTrack;
987        break;
988    default:
989        break;
990    }
991
992    if (track != NULL && track->mSource != NULL) {
993        return track->mIndex;
994    }
995
996    return -1;
997}
998
999status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select) {
1000    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
1001    sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
1002    msg->setInt32("trackIndex", trackIndex);
1003    msg->setInt32("select", select);
1004
1005    sp<AMessage> response;
1006    status_t err = msg->postAndAwaitResponse(&response);
1007    if (err == OK && response != NULL) {
1008        CHECK(response->findInt32("err", &err));
1009    }
1010
1011    return err;
1012}
1013
1014void NuPlayer::GenericSource::onSelectTrack(sp<AMessage> msg) {
1015    int32_t trackIndex, select;
1016    CHECK(msg->findInt32("trackIndex", &trackIndex));
1017    CHECK(msg->findInt32("select", &select));
1018
1019    sp<AMessage> response = new AMessage;
1020    status_t err = doSelectTrack(trackIndex, select);
1021    response->setInt32("err", err);
1022
1023    uint32_t replyID;
1024    CHECK(msg->senderAwaitsResponse(&replyID));
1025    response->postReply(replyID);
1026}
1027
1028status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select) {
1029    if (trackIndex >= mSources.size()) {
1030        return BAD_INDEX;
1031    }
1032
1033    if (!select) {
1034        Track* track = NULL;
1035        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
1036            track = &mSubtitleTrack;
1037            mFetchSubtitleDataGeneration++;
1038        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
1039            track = &mTimedTextTrack;
1040            mFetchTimedTextDataGeneration++;
1041        }
1042        if (track == NULL) {
1043            return INVALID_OPERATION;
1044        }
1045        track->mSource->stop();
1046        track->mSource = NULL;
1047        track->mPackets->clear();
1048        return OK;
1049    }
1050
1051    const sp<MediaSource> source = mSources.itemAt(trackIndex);
1052    sp<MetaData> meta = source->getFormat();
1053    const char *mime;
1054    CHECK(meta->findCString(kKeyMIMEType, &mime));
1055    if (!strncasecmp(mime, "text/", 5)) {
1056        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
1057        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
1058        if (track->mSource != NULL && track->mIndex == trackIndex) {
1059            return OK;
1060        }
1061        track->mIndex = trackIndex;
1062        if (track->mSource != NULL) {
1063            track->mSource->stop();
1064        }
1065        track->mSource = mSources.itemAt(trackIndex);
1066        track->mSource->start();
1067        if (track->mPackets == NULL) {
1068            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
1069        } else {
1070            track->mPackets->clear();
1071            track->mPackets->setFormat(track->mSource->getFormat());
1072
1073        }
1074
1075        if (isSubtitle) {
1076            mFetchSubtitleDataGeneration++;
1077        } else {
1078            mFetchTimedTextDataGeneration++;
1079        }
1080
1081        return OK;
1082    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
1083        bool audio = !strncasecmp(mime, "audio/", 6);
1084        Track *track = audio ? &mAudioTrack : &mVideoTrack;
1085        if (track->mSource != NULL && track->mIndex == trackIndex) {
1086            return OK;
1087        }
1088
1089        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, id());
1090        msg->setInt32("trackIndex", trackIndex);
1091        msg->post();
1092        return OK;
1093    }
1094
1095    return INVALID_OPERATION;
1096}
1097
1098status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs) {
1099    sp<AMessage> msg = new AMessage(kWhatSeek, id());
1100    msg->setInt64("seekTimeUs", seekTimeUs);
1101
1102    sp<AMessage> response;
1103    status_t err = msg->postAndAwaitResponse(&response);
1104    if (err == OK && response != NULL) {
1105        CHECK(response->findInt32("err", &err));
1106    }
1107
1108    return err;
1109}
1110
1111void NuPlayer::GenericSource::onSeek(sp<AMessage> msg) {
1112    int64_t seekTimeUs;
1113    CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1114
1115    sp<AMessage> response = new AMessage;
1116    status_t err = doSeek(seekTimeUs);
1117    response->setInt32("err", err);
1118
1119    uint32_t replyID;
1120    CHECK(msg->senderAwaitsResponse(&replyID));
1121    response->postReply(replyID);
1122}
1123
1124status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs) {
1125    // If the Widevine source is stopped, do not attempt to read any
1126    // more buffers.
1127    if (mStopRead) {
1128        return INVALID_OPERATION;
1129    }
1130    if (mVideoTrack.mSource != NULL) {
1131        int64_t actualTimeUs;
1132        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, &actualTimeUs);
1133
1134        seekTimeUs = actualTimeUs;
1135    }
1136
1137    if (mAudioTrack.mSource != NULL) {
1138        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
1139    }
1140
1141    setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
1142    if (!mStarted) {
1143        setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
1144    }
1145    return OK;
1146}
1147
1148sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
1149        MediaBuffer* mb,
1150        media_track_type trackType,
1151        int64_t *actualTimeUs) {
1152    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
1153    size_t outLength = mb->range_length();
1154
1155    if (audio && mAudioIsVorbis) {
1156        outLength += sizeof(int32_t);
1157    }
1158
1159    sp<ABuffer> ab;
1160    if (mIsWidevine && !audio) {
1161        // data is already provided in the buffer
1162        ab = new ABuffer(NULL, mb->range_length());
1163        mb->add_ref();
1164        ab->setMediaBufferBase(mb);
1165    } else {
1166        ab = new ABuffer(outLength);
1167        memcpy(ab->data(),
1168               (const uint8_t *)mb->data() + mb->range_offset(),
1169               mb->range_length());
1170    }
1171
1172    if (audio && mAudioIsVorbis) {
1173        int32_t numPageSamples;
1174        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
1175            numPageSamples = -1;
1176        }
1177
1178        uint8_t* abEnd = ab->data() + mb->range_length();
1179        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
1180    }
1181
1182    sp<AMessage> meta = ab->meta();
1183
1184    int64_t timeUs;
1185    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
1186    meta->setInt64("timeUs", timeUs);
1187
1188    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
1189        const char *mime;
1190        CHECK(mTimedTextTrack.mSource != NULL
1191                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
1192        meta->setString("mime", mime);
1193    }
1194
1195    int64_t durationUs;
1196    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
1197        meta->setInt64("durationUs", durationUs);
1198    }
1199
1200    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
1201        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
1202    }
1203
1204    if (actualTimeUs) {
1205        *actualTimeUs = timeUs;
1206    }
1207
1208    mb->release();
1209    mb = NULL;
1210
1211    return ab;
1212}
1213
1214void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
1215    Mutex::Autolock _l(mReadBufferLock);
1216
1217    if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
1218        mPendingReadBufferTypes |= (1 << trackType);
1219        sp<AMessage> msg = new AMessage(kWhatReadBuffer, id());
1220        msg->setInt32("trackType", trackType);
1221        msg->post();
1222    }
1223}
1224
1225void NuPlayer::GenericSource::onReadBuffer(sp<AMessage> msg) {
1226    int32_t tmpType;
1227    CHECK(msg->findInt32("trackType", &tmpType));
1228    media_track_type trackType = (media_track_type)tmpType;
1229    {
1230        // only protect the variable change, as readBuffer may
1231        // take considerable time.  This may result in one extra
1232        // read being processed, but that is benign.
1233        Mutex::Autolock _l(mReadBufferLock);
1234        mPendingReadBufferTypes &= ~(1 << trackType);
1235    }
1236    readBuffer(trackType);
1237}
1238
1239void NuPlayer::GenericSource::readBuffer(
1240        media_track_type trackType, int64_t seekTimeUs, int64_t *actualTimeUs, bool formatChange) {
1241    // Do not read data if Widevine source is stopped
1242    if (mStopRead) {
1243        return;
1244    }
1245    Track *track;
1246    size_t maxBuffers = 1;
1247    switch (trackType) {
1248        case MEDIA_TRACK_TYPE_VIDEO:
1249            track = &mVideoTrack;
1250            if (mIsWidevine) {
1251                maxBuffers = 2;
1252            }
1253            break;
1254        case MEDIA_TRACK_TYPE_AUDIO:
1255            track = &mAudioTrack;
1256            if (mIsWidevine) {
1257                maxBuffers = 8;
1258            } else {
1259                maxBuffers = 64;
1260            }
1261            break;
1262        case MEDIA_TRACK_TYPE_SUBTITLE:
1263            track = &mSubtitleTrack;
1264            break;
1265        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1266            track = &mTimedTextTrack;
1267            break;
1268        default:
1269            TRESPASS();
1270    }
1271
1272    if (track->mSource == NULL) {
1273        return;
1274    }
1275
1276    if (actualTimeUs) {
1277        *actualTimeUs = seekTimeUs;
1278    }
1279
1280    MediaSource::ReadOptions options;
1281
1282    bool seeking = false;
1283
1284    if (seekTimeUs >= 0) {
1285        options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
1286        seeking = true;
1287    }
1288
1289    if (mIsWidevine && trackType != MEDIA_TRACK_TYPE_AUDIO) {
1290        options.setNonBlocking();
1291    }
1292
1293    for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
1294        MediaBuffer *mbuf;
1295        status_t err = track->mSource->read(&mbuf, &options);
1296
1297        options.clearSeekTo();
1298
1299        if (err == OK) {
1300            int64_t timeUs;
1301            CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs));
1302            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1303                mAudioTimeUs = timeUs;
1304            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1305                mVideoTimeUs = timeUs;
1306            }
1307
1308            // formatChange && seeking: track whose source is changed during selection
1309            // formatChange && !seeking: track whose source is not changed during selection
1310            // !formatChange: normal seek
1311            if ((seeking || formatChange)
1312                    && (trackType == MEDIA_TRACK_TYPE_AUDIO
1313                    || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1314                ATSParser::DiscontinuityType type = (formatChange && seeking)
1315                        ? ATSParser::DISCONTINUITY_FORMATCHANGE
1316                        : ATSParser::DISCONTINUITY_NONE;
1317                track->mPackets->queueDiscontinuity( type, NULL, true /* discard */);
1318            }
1319
1320            sp<ABuffer> buffer = mediaBufferToABuffer(mbuf, trackType, actualTimeUs);
1321            track->mPackets->queueAccessUnit(buffer);
1322            formatChange = false;
1323            seeking = false;
1324            ++numBuffers;
1325        } else if (err == WOULD_BLOCK) {
1326            break;
1327        } else if (err == INFO_FORMAT_CHANGED) {
1328#if 0
1329            track->mPackets->queueDiscontinuity(
1330                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1331                    NULL,
1332                    false /* discard */);
1333#endif
1334        } else {
1335            track->mPackets->signalEOS(err);
1336            break;
1337        }
1338    }
1339}
1340
1341}  // namespace android
1342