GenericSource.cpp revision 360d6d0924f99b82ebacb5cfb6f7bca95e11b4ee 
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}
79
80status_t NuPlayer::GenericSource::setDataSource(
81        const sp<IMediaHTTPService> &httpService,
82        const char *url,
83        const KeyedVector<String8, String8> *headers) {
84    resetDataSource();
85
86    mHTTPService = httpService;
87    mUri = url;
88
89    if (headers) {
90        mUriHeaders = *headers;
91    }
92
93    // delay data source creation to prepareAsync() to avoid blocking
94    // the calling thread in setDataSource for any significant time.
95    return OK;
96}
97
98status_t NuPlayer::GenericSource::setDataSource(
99        int fd, int64_t offset, int64_t length) {
100    resetDataSource();
101
102    mFd = dup(fd);
103    mOffset = offset;
104    mLength = length;
105
106    // delay data source creation to prepareAsync() to avoid blocking
107    // the calling thread in setDataSource for any significant time.
108    return OK;
109}
110
111sp<MetaData> NuPlayer::GenericSource::getFileFormatMeta() const {
112    return mFileMeta;
113}
114
115status_t NuPlayer::GenericSource::initFromDataSource() {
116    sp<MediaExtractor> extractor;
117
118    CHECK(mDataSource != NULL);
119
120    if (mIsWidevine) {
121        String8 mimeType;
122        float confidence;
123        sp<AMessage> dummy;
124        bool success;
125
126        success = SniffWVM(mDataSource, &mimeType, &confidence, &dummy);
127        if (!success
128                || strcasecmp(
129                    mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM)) {
130            ALOGE("unsupported widevine mime: %s", mimeType.string());
131            return UNKNOWN_ERROR;
132        }
133
134        mWVMExtractor = new WVMExtractor(mDataSource);
135        mWVMExtractor->setAdaptiveStreamingMode(true);
136        if (mUIDValid) {
137            mWVMExtractor->setUID(mUID);
138        }
139        extractor = mWVMExtractor;
140    } else {
141        extractor = MediaExtractor::Create(mDataSource,
142                mSniffedMIME.empty() ? NULL: mSniffedMIME.c_str());
143    }
144
145    if (extractor == NULL) {
146        return UNKNOWN_ERROR;
147    }
148
149    if (extractor->getDrmFlag()) {
150        checkDrmStatus(mDataSource);
151    }
152
153    mFileMeta = extractor->getMetaData();
154    if (mFileMeta != NULL) {
155        int64_t duration;
156        if (mFileMeta->findInt64(kKeyDuration, &duration)) {
157            mDurationUs = duration;
158        }
159    }
160
161    int32_t totalBitrate = 0;
162
163    size_t numtracks = extractor->countTracks();
164    if (numtracks == 0) {
165        return UNKNOWN_ERROR;
166    }
167
168    for (size_t i = 0; i < numtracks; ++i) {
169        sp<MediaSource> track = extractor->getTrack(i);
170
171        sp<MetaData> meta = extractor->getTrackMetaData(i);
172
173        const char *mime;
174        CHECK(meta->findCString(kKeyMIMEType, &mime));
175
176        // Do the string compare immediately with "mime",
177        // we can't assume "mime" would stay valid after another
178        // extractor operation, some extractors might modify meta
179        // during getTrack() and make it invalid.
180        if (!strncasecmp(mime, "audio/", 6)) {
181            if (mAudioTrack.mSource == NULL) {
182                mAudioTrack.mIndex = i;
183                mAudioTrack.mSource = track;
184                mAudioTrack.mPackets =
185                    new AnotherPacketSource(mAudioTrack.mSource->getFormat());
186
187                if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) {
188                    mAudioIsVorbis = true;
189                } else {
190                    mAudioIsVorbis = false;
191                }
192            }
193        } else if (!strncasecmp(mime, "video/", 6)) {
194            if (mVideoTrack.mSource == NULL) {
195                mVideoTrack.mIndex = i;
196                mVideoTrack.mSource = track;
197                mVideoTrack.mPackets =
198                    new AnotherPacketSource(mVideoTrack.mSource->getFormat());
199
200                // check if the source requires secure buffers
201                int32_t secure;
202                if (meta->findInt32(kKeyRequiresSecureBuffers, &secure)
203                        && secure) {
204                    mIsWidevine = true;
205                    if (mUIDValid) {
206                        extractor->setUID(mUID);
207                    }
208                }
209            }
210        }
211
212        if (track != NULL) {
213            mSources.push(track);
214            int64_t durationUs;
215            if (meta->findInt64(kKeyDuration, &durationUs)) {
216                if (durationUs > mDurationUs) {
217                    mDurationUs = durationUs;
218                }
219            }
220
221            int32_t bitrate;
222            if (totalBitrate >= 0 && meta->findInt32(kKeyBitRate, &bitrate)) {
223                totalBitrate += bitrate;
224            } else {
225                totalBitrate = -1;
226            }
227        }
228    }
229
230    mBitrate = totalBitrate;
231
232    return OK;
233}
234
235void NuPlayer::GenericSource::checkDrmStatus(const sp<DataSource>& dataSource) {
236    dataSource->getDrmInfo(mDecryptHandle, &mDrmManagerClient);
237    if (mDecryptHandle != NULL) {
238        CHECK(mDrmManagerClient);
239        if (RightsStatus::RIGHTS_VALID != mDecryptHandle->status) {
240            sp<AMessage> msg = dupNotify();
241            msg->setInt32("what", kWhatDrmNoLicense);
242            msg->post();
243        }
244    }
245}
246
247int64_t NuPlayer::GenericSource::getLastReadPosition() {
248    if (mAudioTrack.mSource != NULL) {
249        return mAudioTimeUs;
250    } else if (mVideoTrack.mSource != NULL) {
251        return mVideoTimeUs;
252    } else {
253        return 0;
254    }
255}
256
257status_t NuPlayer::GenericSource::setBuffers(
258        bool audio, Vector<MediaBuffer *> &buffers) {
259    if (mIsWidevine && !audio) {
260        return mVideoTrack.mSource->setBuffers(buffers);
261    }
262    return INVALID_OPERATION;
263}
264
265NuPlayer::GenericSource::~GenericSource() {
266    if (mLooper != NULL) {
267        mLooper->unregisterHandler(id());
268        mLooper->stop();
269    }
270}
271
272void NuPlayer::GenericSource::prepareAsync() {
273    if (mLooper == NULL) {
274        mLooper = new ALooper;
275        mLooper->setName("generic");
276        mLooper->start();
277
278        mLooper->registerHandler(this);
279    }
280
281    sp<AMessage> msg = new AMessage(kWhatPrepareAsync, id());
282    msg->post();
283}
284
285void NuPlayer::GenericSource::onPrepareAsync() {
286    // delayed data source creation
287    if (mDataSource == NULL) {
288        if (!mUri.empty()) {
289            const char* uri = mUri.c_str();
290            mIsWidevine = !strncasecmp(uri, "widevine://", 11);
291
292            if (!strncasecmp("http://", uri, 7)
293                    || !strncasecmp("https://", uri, 8)
294                    || mIsWidevine) {
295                mHttpSource = DataSource::CreateMediaHTTP(mHTTPService);
296                if (mHttpSource == NULL) {
297                    ALOGE("Failed to create http source!");
298                    notifyPreparedAndCleanup(UNKNOWN_ERROR);
299                    return;
300                }
301            }
302
303            mDataSource = DataSource::CreateFromURI(
304                   mHTTPService, uri, &mUriHeaders, &mContentType,
305                   static_cast<HTTPBase *>(mHttpSource.get()));
306        } else {
307            // set to false first, if the extractor
308            // comes back as secure, set it to true then.
309            mIsWidevine = false;
310
311            mDataSource = new FileSource(mFd, mOffset, mLength);
312        }
313
314        if (mDataSource == NULL) {
315            ALOGE("Failed to create data source!");
316            notifyPreparedAndCleanup(UNKNOWN_ERROR);
317            return;
318        }
319
320        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
321            mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get());
322        }
323
324        if (mIsWidevine || mCachedSource != NULL) {
325            schedulePollBuffering();
326        }
327    }
328
329    // check initial caching status
330    status_t err = prefillCacheIfNecessary();
331    if (err != OK) {
332        if (err == -EAGAIN) {
333            (new AMessage(kWhatPrepareAsync, id()))->post(200000);
334        } else {
335            ALOGE("Failed to prefill data cache!");
336            notifyPreparedAndCleanup(UNKNOWN_ERROR);
337        }
338        return;
339    }
340
341    // init extrator from data source
342    err = initFromDataSource();
343
344    if (err != OK) {
345        ALOGE("Failed to init from data source!");
346        notifyPreparedAndCleanup(err);
347        return;
348    }
349
350    if (mVideoTrack.mSource != NULL) {
351        sp<MetaData> meta = doGetFormatMeta(false /* audio */);
352        sp<AMessage> msg = new AMessage;
353        err = convertMetaDataToMessage(meta, &msg);
354        if(err != OK) {
355            notifyPreparedAndCleanup(err);
356            return;
357        }
358        notifyVideoSizeChanged(msg);
359    }
360
361    notifyFlagsChanged(
362            (mIsWidevine ? FLAG_SECURE : 0)
363            | FLAG_CAN_PAUSE
364            | FLAG_CAN_SEEK_BACKWARD
365            | FLAG_CAN_SEEK_FORWARD
366            | FLAG_CAN_SEEK);
367
368    notifyPrepared();
369}
370
371void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
372    if (err != OK) {
373        mMetaDataSize = -1ll;
374        mContentType = "";
375        mSniffedMIME = "";
376        mDataSource.clear();
377        mCachedSource.clear();
378        mHttpSource.clear();
379
380        cancelPollBuffering();
381    }
382    notifyPrepared(err);
383}
384
385status_t NuPlayer::GenericSource::prefillCacheIfNecessary() {
386    CHECK(mDataSource != NULL);
387
388    if (mCachedSource == NULL) {
389        // no prefill if the data source is not cached
390        return OK;
391    }
392
393    // We're not doing this for streams that appear to be audio-only
394    // streams to ensure that even low bandwidth streams start
395    // playing back fairly instantly.
396    if (!strncasecmp(mContentType.string(), "audio/", 6)) {
397        return OK;
398    }
399
400    // We're going to prefill the cache before trying to instantiate
401    // the extractor below, as the latter is an operation that otherwise
402    // could block on the datasource for a significant amount of time.
403    // During that time we'd be unable to abort the preparation phase
404    // without this prefill.
405
406    // Initially make sure we have at least 192 KB for the sniff
407    // to complete without blocking.
408    static const size_t kMinBytesForSniffing = 192 * 1024;
409    static const size_t kDefaultMetaSize = 200000;
410
411    status_t finalStatus;
412
413    size_t cachedDataRemaining =
414            mCachedSource->approxDataRemaining(&finalStatus);
415
416    if (finalStatus != OK || (mMetaDataSize >= 0
417            && (off64_t)cachedDataRemaining >= mMetaDataSize)) {
418        ALOGV("stop caching, status %d, "
419                "metaDataSize %lld, cachedDataRemaining %zu",
420                finalStatus, mMetaDataSize, cachedDataRemaining);
421        return OK;
422    }
423
424    ALOGV("now cached %zu bytes of data", cachedDataRemaining);
425
426    if (mMetaDataSize < 0
427            && cachedDataRemaining >= kMinBytesForSniffing) {
428        String8 tmp;
429        float confidence;
430        sp<AMessage> meta;
431        if (!mCachedSource->sniff(&tmp, &confidence, &meta)) {
432            return UNKNOWN_ERROR;
433        }
434
435        // We successfully identified the file's extractor to
436        // be, remember this mime type so we don't have to
437        // sniff it again when we call MediaExtractor::Create()
438        mSniffedMIME = tmp.string();
439
440        if (meta == NULL
441                || !meta->findInt64("meta-data-size",
442                        reinterpret_cast<int64_t*>(&mMetaDataSize))) {
443            mMetaDataSize = kDefaultMetaSize;
444        }
445
446        if (mMetaDataSize < 0ll) {
447            ALOGE("invalid metaDataSize = %lld bytes", mMetaDataSize);
448            return UNKNOWN_ERROR;
449        }
450    }
451
452    return -EAGAIN;
453}
454
455void NuPlayer::GenericSource::start() {
456    ALOGI("start");
457
458    if (mAudioTrack.mSource != NULL) {
459        CHECK_EQ(mAudioTrack.mSource->start(), (status_t)OK);
460
461        postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
462    }
463
464    if (mVideoTrack.mSource != NULL) {
465        CHECK_EQ(mVideoTrack.mSource->start(), (status_t)OK);
466
467        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
468    }
469
470    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
471    mStarted = true;
472}
473
474void NuPlayer::GenericSource::stop() {
475    // nothing to do, just account for DRM playback status
476    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
477    mStarted = false;
478}
479
480void NuPlayer::GenericSource::pause() {
481    // nothing to do, just account for DRM playback status
482    setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
483    mStarted = false;
484}
485
486void NuPlayer::GenericSource::resume() {
487    // nothing to do, just account for DRM playback status
488    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
489    mStarted = true;
490}
491
492void NuPlayer::GenericSource::disconnect() {
493    if (mDataSource != NULL) {
494        // disconnect data source
495        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
496            static_cast<NuCachedSource2 *>(mDataSource.get())->disconnect();
497        }
498    } else if (mHttpSource != NULL) {
499        static_cast<HTTPBase *>(mHttpSource.get())->disconnect();
500    }
501}
502
503void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
504    if (mDecryptHandle != NULL) {
505        mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
506    }
507    mSubtitleTrack.mPackets = new AnotherPacketSource(NULL);
508    mTimedTextTrack.mPackets = new AnotherPacketSource(NULL);
509}
510
511status_t NuPlayer::GenericSource::feedMoreTSData() {
512    return OK;
513}
514
515void NuPlayer::GenericSource::schedulePollBuffering() {
516    sp<AMessage> msg = new AMessage(kWhatPollBuffering, id());
517    msg->setInt32("generation", mPollBufferingGeneration);
518    msg->post(1000000ll);
519}
520
521void NuPlayer::GenericSource::cancelPollBuffering() {
522    ++mPollBufferingGeneration;
523}
524
525void NuPlayer::GenericSource::notifyBufferingUpdate(int percentage) {
526    sp<AMessage> msg = dupNotify();
527    msg->setInt32("what", kWhatBufferingUpdate);
528    msg->setInt32("percentage", percentage);
529    msg->post();
530}
531
532void NuPlayer::GenericSource::onPollBuffering() {
533    status_t finalStatus = UNKNOWN_ERROR;
534    int64_t cachedDurationUs = 0ll;
535
536    if (mCachedSource != NULL) {
537        size_t cachedDataRemaining =
538                mCachedSource->approxDataRemaining(&finalStatus);
539
540        if (finalStatus == OK) {
541            off64_t size;
542            int64_t bitrate = 0ll;
543            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
544                bitrate = size * 8000000ll / mDurationUs;
545            } else if (mBitrate > 0) {
546                bitrate = mBitrate;
547            }
548            if (bitrate > 0) {
549                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
550            }
551        }
552    } else if (mWVMExtractor != NULL) {
553        cachedDurationUs
554            = mWVMExtractor->getCachedDurationUs(&finalStatus);
555    }
556
557    if (finalStatus == ERROR_END_OF_STREAM) {
558        notifyBufferingUpdate(100);
559        cancelPollBuffering();
560        return;
561    } else if (cachedDurationUs > 0ll && mDurationUs > 0ll) {
562        int percentage = 100.0 * cachedDurationUs / mDurationUs;
563        if (percentage > 100) {
564            percentage = 100;
565        }
566
567        notifyBufferingUpdate(percentage);
568    }
569
570    schedulePollBuffering();
571}
572
573
574void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
575    switch (msg->what()) {
576      case kWhatPrepareAsync:
577      {
578          onPrepareAsync();
579          break;
580      }
581      case kWhatFetchSubtitleData:
582      {
583          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
584                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
585          break;
586      }
587
588      case kWhatFetchTimedTextData:
589      {
590          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
591                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
592          break;
593      }
594
595      case kWhatSendSubtitleData:
596      {
597          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
598                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
599          break;
600      }
601
602      case kWhatSendTimedTextData:
603      {
604          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
605                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
606          break;
607      }
608
609      case kWhatChangeAVSource:
610      {
611          int32_t trackIndex;
612          CHECK(msg->findInt32("trackIndex", &trackIndex));
613          const sp<MediaSource> source = mSources.itemAt(trackIndex);
614
615          Track* track;
616          const char *mime;
617          media_track_type trackType, counterpartType;
618          sp<MetaData> meta = source->getFormat();
619          meta->findCString(kKeyMIMEType, &mime);
620          if (!strncasecmp(mime, "audio/", 6)) {
621              track = &mAudioTrack;
622              trackType = MEDIA_TRACK_TYPE_AUDIO;
623              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
624          } else {
625              CHECK(!strncasecmp(mime, "video/", 6));
626              track = &mVideoTrack;
627              trackType = MEDIA_TRACK_TYPE_VIDEO;
628              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
629          }
630
631
632          if (track->mSource != NULL) {
633              track->mSource->stop();
634          }
635          track->mSource = source;
636          track->mSource->start();
637          track->mIndex = trackIndex;
638
639          status_t avail;
640          if (!track->mPackets->hasBufferAvailable(&avail)) {
641              // sync from other source
642              TRESPASS();
643              break;
644          }
645
646          int64_t timeUs, actualTimeUs;
647          const bool formatChange = true;
648          sp<AMessage> latestMeta = track->mPackets->getLatestEnqueuedMeta();
649          CHECK(latestMeta != NULL && latestMeta->findInt64("timeUs", &timeUs));
650          readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
651          readBuffer(counterpartType, -1, NULL, formatChange);
652          ALOGV("timeUs %lld actualTimeUs %lld", timeUs, actualTimeUs);
653
654          break;
655      }
656      case kWhatPollBuffering:
657      {
658          int32_t generation;
659          CHECK(msg->findInt32("generation", &generation));
660          if (generation == mPollBufferingGeneration) {
661              onPollBuffering();
662          }
663          break;
664      }
665
666      case kWhatGetFormat:
667      {
668          onGetFormatMeta(msg);
669          break;
670      }
671
672      case kWhatGetSelectedTrack:
673      {
674          onGetSelectedTrack(msg);
675          break;
676      }
677
678      case kWhatSelectTrack:
679      {
680          onSelectTrack(msg);
681          break;
682      }
683
684      case kWhatSeek:
685      {
686          onSeek(msg);
687          break;
688      }
689
690      case kWhatReadBuffer:
691      {
692          onReadBuffer(msg);
693          break;
694      }
695
696      default:
697          Source::onMessageReceived(msg);
698          break;
699    }
700}
701
702void NuPlayer::GenericSource::fetchTextData(
703        uint32_t sendWhat,
704        media_track_type type,
705        int32_t curGen,
706        sp<AnotherPacketSource> packets,
707        sp<AMessage> msg) {
708    int32_t msgGeneration;
709    CHECK(msg->findInt32("generation", &msgGeneration));
710    if (msgGeneration != curGen) {
711        // stale
712        return;
713    }
714
715    int32_t avail;
716    if (packets->hasBufferAvailable(&avail)) {
717        return;
718    }
719
720    int64_t timeUs;
721    CHECK(msg->findInt64("timeUs", &timeUs));
722
723    int64_t subTimeUs;
724    readBuffer(type, timeUs, &subTimeUs);
725
726    int64_t delayUs = subTimeUs - timeUs;
727    if (msg->what() == kWhatFetchSubtitleData) {
728        const int64_t oneSecUs = 1000000ll;
729        delayUs -= oneSecUs;
730    }
731    sp<AMessage> msg2 = new AMessage(sendWhat, id());
732    msg2->setInt32("generation", msgGeneration);
733    msg2->post(delayUs < 0 ? 0 : delayUs);
734}
735
736void NuPlayer::GenericSource::sendTextData(
737        uint32_t what,
738        media_track_type type,
739        int32_t curGen,
740        sp<AnotherPacketSource> packets,
741        sp<AMessage> msg) {
742    int32_t msgGeneration;
743    CHECK(msg->findInt32("generation", &msgGeneration));
744    if (msgGeneration != curGen) {
745        // stale
746        return;
747    }
748
749    int64_t subTimeUs;
750    if (packets->nextBufferTime(&subTimeUs) != OK) {
751        return;
752    }
753
754    int64_t nextSubTimeUs;
755    readBuffer(type, -1, &nextSubTimeUs);
756
757    sp<ABuffer> buffer;
758    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
759    if (dequeueStatus == OK) {
760        sp<AMessage> notify = dupNotify();
761        notify->setInt32("what", what);
762        notify->setBuffer("buffer", buffer);
763        notify->post();
764
765        const int64_t delayUs = nextSubTimeUs - subTimeUs;
766        msg->post(delayUs < 0 ? 0 : delayUs);
767    }
768}
769
770sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
771    sp<AMessage> msg = new AMessage(kWhatGetFormat, id());
772    msg->setInt32("audio", audio);
773
774    sp<AMessage> response;
775    void *format;
776    status_t err = msg->postAndAwaitResponse(&response);
777    if (err == OK && response != NULL) {
778        CHECK(response->findPointer("format", &format));
779        return (MetaData *)format;
780    } else {
781        return NULL;
782    }
783}
784
785void NuPlayer::GenericSource::onGetFormatMeta(sp<AMessage> msg) const {
786    int32_t audio;
787    CHECK(msg->findInt32("audio", &audio));
788
789    sp<AMessage> response = new AMessage;
790    sp<MetaData> format = doGetFormatMeta(audio);
791    response->setPointer("format", format.get());
792
793    uint32_t replyID;
794    CHECK(msg->senderAwaitsResponse(&replyID));
795    response->postReply(replyID);
796}
797
798sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
799    sp<MediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
800
801    if (source == NULL) {
802        return NULL;
803    }
804
805    return source->getFormat();
806}
807
808status_t NuPlayer::GenericSource::dequeueAccessUnit(
809        bool audio, sp<ABuffer> *accessUnit) {
810    Track *track = audio ? &mAudioTrack : &mVideoTrack;
811
812    if (track->mSource == NULL) {
813        return -EWOULDBLOCK;
814    }
815
816    if (mIsWidevine && !audio) {
817        // try to read a buffer as we may not have been able to the last time
818        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
819    }
820
821    status_t finalResult;
822    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
823        return (finalResult == OK ? -EWOULDBLOCK : finalResult);
824    }
825
826    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
827
828    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
829        postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
830    }
831
832    if (result != OK) {
833        if (mSubtitleTrack.mSource != NULL) {
834            mSubtitleTrack.mPackets->clear();
835            mFetchSubtitleDataGeneration++;
836        }
837        if (mTimedTextTrack.mSource != NULL) {
838            mTimedTextTrack.mPackets->clear();
839            mFetchTimedTextDataGeneration++;
840        }
841        return result;
842    }
843
844    int64_t timeUs;
845    status_t eosResult; // ignored
846    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
847
848    if (mSubtitleTrack.mSource != NULL
849            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
850        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
851        msg->setInt64("timeUs", timeUs);
852        msg->setInt32("generation", mFetchSubtitleDataGeneration);
853        msg->post();
854    }
855
856    if (mTimedTextTrack.mSource != NULL
857            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
858        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
859        msg->setInt64("timeUs", timeUs);
860        msg->setInt32("generation", mFetchTimedTextDataGeneration);
861        msg->post();
862    }
863
864    return result;
865}
866
867status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
868    *durationUs = mDurationUs;
869    return OK;
870}
871
872size_t NuPlayer::GenericSource::getTrackCount() const {
873    return mSources.size();
874}
875
876sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
877    size_t trackCount = mSources.size();
878    if (trackIndex >= trackCount) {
879        return NULL;
880    }
881
882    sp<AMessage> format = new AMessage();
883    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
884
885    const char *mime;
886    CHECK(meta->findCString(kKeyMIMEType, &mime));
887
888    int32_t trackType;
889    if (!strncasecmp(mime, "video/", 6)) {
890        trackType = MEDIA_TRACK_TYPE_VIDEO;
891    } else if (!strncasecmp(mime, "audio/", 6)) {
892        trackType = MEDIA_TRACK_TYPE_AUDIO;
893    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
894        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
895    } else {
896        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
897    }
898    format->setInt32("type", trackType);
899
900    const char *lang;
901    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
902        lang = "und";
903    }
904    format->setString("language", lang);
905
906    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
907        format->setString("mime", mime);
908
909        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
910        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
911        meta->findInt32(kKeyTrackIsDefault, &isDefault);
912        meta->findInt32(kKeyTrackIsForced, &isForced);
913
914        format->setInt32("auto", !!isAutoselect);
915        format->setInt32("default", !!isDefault);
916        format->setInt32("forced", !!isForced);
917    }
918
919    return format;
920}
921
922ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
923    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, id());
924    msg->setInt32("type", type);
925
926    sp<AMessage> response;
927    int32_t index;
928    status_t err = msg->postAndAwaitResponse(&response);
929    if (err == OK && response != NULL) {
930        CHECK(response->findInt32("index", &index));
931        return index;
932    } else {
933        return -1;
934    }
935}
936
937void NuPlayer::GenericSource::onGetSelectedTrack(sp<AMessage> msg) const {
938    int32_t tmpType;
939    CHECK(msg->findInt32("type", &tmpType));
940    media_track_type type = (media_track_type)tmpType;
941
942    sp<AMessage> response = new AMessage;
943    ssize_t index = doGetSelectedTrack(type);
944    response->setInt32("index", index);
945
946    uint32_t replyID;
947    CHECK(msg->senderAwaitsResponse(&replyID));
948    response->postReply(replyID);
949}
950
951ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
952    const Track *track = NULL;
953    switch (type) {
954    case MEDIA_TRACK_TYPE_VIDEO:
955        track = &mVideoTrack;
956        break;
957    case MEDIA_TRACK_TYPE_AUDIO:
958        track = &mAudioTrack;
959        break;
960    case MEDIA_TRACK_TYPE_TIMEDTEXT:
961        track = &mTimedTextTrack;
962        break;
963    case MEDIA_TRACK_TYPE_SUBTITLE:
964        track = &mSubtitleTrack;
965        break;
966    default:
967        break;
968    }
969
970    if (track != NULL && track->mSource != NULL) {
971        return track->mIndex;
972    }
973
974    return -1;
975}
976
977status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select) {
978    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
979    sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
980    msg->setInt32("trackIndex", trackIndex);
981    msg->setInt32("select", select);
982
983    sp<AMessage> response;
984    status_t err = msg->postAndAwaitResponse(&response);
985    if (err == OK && response != NULL) {
986        CHECK(response->findInt32("err", &err));
987    }
988
989    return err;
990}
991
992void NuPlayer::GenericSource::onSelectTrack(sp<AMessage> msg) {
993    int32_t trackIndex, select;
994    CHECK(msg->findInt32("trackIndex", &trackIndex));
995    CHECK(msg->findInt32("select", &select));
996
997    sp<AMessage> response = new AMessage;
998    status_t err = doSelectTrack(trackIndex, select);
999    response->setInt32("err", err);
1000
1001    uint32_t replyID;
1002    CHECK(msg->senderAwaitsResponse(&replyID));
1003    response->postReply(replyID);
1004}
1005
1006status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select) {
1007    if (trackIndex >= mSources.size()) {
1008        return BAD_INDEX;
1009    }
1010
1011    if (!select) {
1012        Track* track = NULL;
1013        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
1014            track = &mSubtitleTrack;
1015            mFetchSubtitleDataGeneration++;
1016        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
1017            track = &mTimedTextTrack;
1018            mFetchTimedTextDataGeneration++;
1019        }
1020        if (track == NULL) {
1021            return INVALID_OPERATION;
1022        }
1023        track->mSource->stop();
1024        track->mSource = NULL;
1025        track->mPackets->clear();
1026        return OK;
1027    }
1028
1029    const sp<MediaSource> source = mSources.itemAt(trackIndex);
1030    sp<MetaData> meta = source->getFormat();
1031    const char *mime;
1032    CHECK(meta->findCString(kKeyMIMEType, &mime));
1033    if (!strncasecmp(mime, "text/", 5)) {
1034        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
1035        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
1036        if (track->mSource != NULL && track->mIndex == trackIndex) {
1037            return OK;
1038        }
1039        track->mIndex = trackIndex;
1040        if (track->mSource != NULL) {
1041            track->mSource->stop();
1042        }
1043        track->mSource = mSources.itemAt(trackIndex);
1044        track->mSource->start();
1045        if (track->mPackets == NULL) {
1046            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
1047        } else {
1048            track->mPackets->clear();
1049            track->mPackets->setFormat(track->mSource->getFormat());
1050
1051        }
1052
1053        if (isSubtitle) {
1054            mFetchSubtitleDataGeneration++;
1055        } else {
1056            mFetchTimedTextDataGeneration++;
1057        }
1058
1059        return OK;
1060    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
1061        bool audio = !strncasecmp(mime, "audio/", 6);
1062        Track *track = audio ? &mAudioTrack : &mVideoTrack;
1063        if (track->mSource != NULL && track->mIndex == trackIndex) {
1064            return OK;
1065        }
1066
1067        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, id());
1068        msg->setInt32("trackIndex", trackIndex);
1069        msg->post();
1070        return OK;
1071    }
1072
1073    return INVALID_OPERATION;
1074}
1075
1076status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs) {
1077    sp<AMessage> msg = new AMessage(kWhatSeek, id());
1078    msg->setInt64("seekTimeUs", seekTimeUs);
1079
1080    sp<AMessage> response;
1081    status_t err = msg->postAndAwaitResponse(&response);
1082    if (err == OK && response != NULL) {
1083        CHECK(response->findInt32("err", &err));
1084    }
1085
1086    return err;
1087}
1088
1089void NuPlayer::GenericSource::onSeek(sp<AMessage> msg) {
1090    int64_t seekTimeUs;
1091    CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1092
1093    sp<AMessage> response = new AMessage;
1094    status_t err = doSeek(seekTimeUs);
1095    response->setInt32("err", err);
1096
1097    uint32_t replyID;
1098    CHECK(msg->senderAwaitsResponse(&replyID));
1099    response->postReply(replyID);
1100}
1101
1102status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs) {
1103    if (mVideoTrack.mSource != NULL) {
1104        int64_t actualTimeUs;
1105        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, &actualTimeUs);
1106
1107        seekTimeUs = actualTimeUs;
1108    }
1109
1110    if (mAudioTrack.mSource != NULL) {
1111        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
1112    }
1113
1114    setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
1115    if (!mStarted) {
1116        setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
1117    }
1118    return OK;
1119}
1120
1121sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
1122        MediaBuffer* mb,
1123        media_track_type trackType,
1124        int64_t *actualTimeUs) {
1125    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
1126    size_t outLength = mb->range_length();
1127
1128    if (audio && mAudioIsVorbis) {
1129        outLength += sizeof(int32_t);
1130    }
1131
1132    sp<ABuffer> ab;
1133    if (mIsWidevine && !audio) {
1134        // data is already provided in the buffer
1135        ab = new ABuffer(NULL, mb->range_length());
1136        mb->add_ref();
1137        ab->setMediaBufferBase(mb);
1138    } else {
1139        ab = new ABuffer(outLength);
1140        memcpy(ab->data(),
1141               (const uint8_t *)mb->data() + mb->range_offset(),
1142               mb->range_length());
1143    }
1144
1145    if (audio && mAudioIsVorbis) {
1146        int32_t numPageSamples;
1147        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
1148            numPageSamples = -1;
1149        }
1150
1151        uint8_t* abEnd = ab->data() + mb->range_length();
1152        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
1153    }
1154
1155    sp<AMessage> meta = ab->meta();
1156
1157    int64_t timeUs;
1158    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
1159    meta->setInt64("timeUs", timeUs);
1160
1161    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
1162        const char *mime;
1163        CHECK(mTimedTextTrack.mSource != NULL
1164                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
1165        meta->setString("mime", mime);
1166    }
1167
1168    int64_t durationUs;
1169    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
1170        meta->setInt64("durationUs", durationUs);
1171    }
1172
1173    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
1174        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
1175    }
1176
1177    if (actualTimeUs) {
1178        *actualTimeUs = timeUs;
1179    }
1180
1181    mb->release();
1182    mb = NULL;
1183
1184    return ab;
1185}
1186
1187void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
1188    Mutex::Autolock _l(mReadBufferLock);
1189
1190    if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
1191        mPendingReadBufferTypes |= (1 << trackType);
1192        sp<AMessage> msg = new AMessage(kWhatReadBuffer, id());
1193        msg->setInt32("trackType", trackType);
1194        msg->post();
1195    }
1196}
1197
1198void NuPlayer::GenericSource::onReadBuffer(sp<AMessage> msg) {
1199    int32_t tmpType;
1200    CHECK(msg->findInt32("trackType", &tmpType));
1201    media_track_type trackType = (media_track_type)tmpType;
1202    {
1203        // only protect the variable change, as readBuffer may
1204        // take considerable time.  This may result in one extra
1205        // read being processed, but that is benign.
1206        Mutex::Autolock _l(mReadBufferLock);
1207        mPendingReadBufferTypes &= ~(1 << trackType);
1208    }
1209    readBuffer(trackType);
1210}
1211
1212void NuPlayer::GenericSource::readBuffer(
1213        media_track_type trackType, int64_t seekTimeUs, int64_t *actualTimeUs, bool formatChange) {
1214    Track *track;
1215    size_t maxBuffers = 1;
1216    switch (trackType) {
1217        case MEDIA_TRACK_TYPE_VIDEO:
1218            track = &mVideoTrack;
1219            if (mIsWidevine) {
1220                maxBuffers = 2;
1221            }
1222            break;
1223        case MEDIA_TRACK_TYPE_AUDIO:
1224            track = &mAudioTrack;
1225            if (mIsWidevine) {
1226                maxBuffers = 8;
1227            } else {
1228                maxBuffers = 64;
1229            }
1230            break;
1231        case MEDIA_TRACK_TYPE_SUBTITLE:
1232            track = &mSubtitleTrack;
1233            break;
1234        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1235            track = &mTimedTextTrack;
1236            break;
1237        default:
1238            TRESPASS();
1239    }
1240
1241    if (track->mSource == NULL) {
1242        return;
1243    }
1244
1245    if (actualTimeUs) {
1246        *actualTimeUs = seekTimeUs;
1247    }
1248
1249    MediaSource::ReadOptions options;
1250
1251    bool seeking = false;
1252
1253    if (seekTimeUs >= 0) {
1254        options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
1255        seeking = true;
1256    }
1257
1258    if (mIsWidevine && trackType != MEDIA_TRACK_TYPE_AUDIO) {
1259        options.setNonBlocking();
1260    }
1261
1262    for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
1263        MediaBuffer *mbuf;
1264        status_t err = track->mSource->read(&mbuf, &options);
1265
1266        options.clearSeekTo();
1267
1268        if (err == OK) {
1269            int64_t timeUs;
1270            CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs));
1271            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1272                mAudioTimeUs = timeUs;
1273            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1274                mVideoTimeUs = timeUs;
1275            }
1276
1277            // formatChange && seeking: track whose source is changed during selection
1278            // formatChange && !seeking: track whose source is not changed during selection
1279            // !formatChange: normal seek
1280            if ((seeking || formatChange)
1281                    && (trackType == MEDIA_TRACK_TYPE_AUDIO
1282                    || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1283                ATSParser::DiscontinuityType type = formatChange
1284                        ? (seeking
1285                                ? ATSParser::DISCONTINUITY_FORMATCHANGE
1286                                : ATSParser::DISCONTINUITY_NONE)
1287                        : ATSParser::DISCONTINUITY_SEEK;
1288                track->mPackets->queueDiscontinuity( type, NULL, true /* discard */);
1289            }
1290
1291            sp<ABuffer> buffer = mediaBufferToABuffer(mbuf, trackType, actualTimeUs);
1292            track->mPackets->queueAccessUnit(buffer);
1293            formatChange = false;
1294            seeking = false;
1295            ++numBuffers;
1296        } else if (err == WOULD_BLOCK) {
1297            break;
1298        } else if (err == INFO_FORMAT_CHANGED) {
1299#if 0
1300            track->mPackets->queueDiscontinuity(
1301                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1302                    NULL,
1303                    false /* discard */);
1304#endif
1305        } else {
1306            track->mPackets->signalEOS(err);
1307            break;
1308        }
1309    }
1310}
1311
1312}  // namespace android
1313