GenericSource.cpp revision 705d3290102875409e334e2a80e64221714aa37c 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17//#define LOG_NDEBUG 0
18#define LOG_TAG "GenericSource"
19
20#include "GenericSource.h"
21
22#include "AnotherPacketSource.h"
23
24#include <media/IMediaHTTPService.h>
25#include <media/stagefright/foundation/ABuffer.h>
26#include <media/stagefright/foundation/ADebug.h>
27#include <media/stagefright/foundation/AMessage.h>
28#include <media/stagefright/DataSource.h>
29#include <media/stagefright/FileSource.h>
30#include <media/stagefright/MediaBuffer.h>
31#include <media/stagefright/MediaDefs.h>
32#include <media/stagefright/MediaExtractor.h>
33#include <media/stagefright/MediaSource.h>
34#include <media/stagefright/MetaData.h>
35#include <media/stagefright/Utils.h>
36#include "../../libstagefright/include/DRMExtractor.h"
37#include "../../libstagefright/include/NuCachedSource2.h"
38#include "../../libstagefright/include/WVMExtractor.h"
39
40namespace android {
41
42NuPlayer::GenericSource::GenericSource(
43        const sp<AMessage> &notify,
44        bool uidValid,
45        uid_t uid)
46    : Source(notify),
47      mFetchSubtitleDataGeneration(0),
48      mFetchTimedTextDataGeneration(0),
49      mDurationUs(0ll),
50      mAudioIsVorbis(false),
51      mIsWidevine(false),
52      mUIDValid(uidValid),
53      mUID(uid),
54      mDrmManagerClient(NULL),
55      mMetaDataSize(-1ll),
56      mBitrate(-1ll),
57      mPollBufferingGeneration(0),
58      mPendingReadBufferTypes(0) {
59    resetDataSource();
60    DataSource::RegisterDefaultSniffers();
61}
62
63void NuPlayer::GenericSource::resetDataSource() {
64    mAudioTimeUs = 0;
65    mVideoTimeUs = 0;
66    mHTTPService.clear();
67    mUri.clear();
68    mUriHeaders.clear();
69    mFd = -1;
70    mOffset = 0;
71    mLength = 0;
72    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
73    mDecryptHandle = NULL;
74    mDrmManagerClient = NULL;
75    mStarted = false;
76}
77
78status_t NuPlayer::GenericSource::setDataSource(
79        const sp<IMediaHTTPService> &httpService,
80        const char *url,
81        const KeyedVector<String8, String8> *headers) {
82    resetDataSource();
83
84    mHTTPService = httpService;
85    mUri = url;
86
87    if (headers) {
88        mUriHeaders = *headers;
89    }
90
91    // delay data source creation to prepareAsync() to avoid blocking
92    // the calling thread in setDataSource for any significant time.
93    return OK;
94}
95
96status_t NuPlayer::GenericSource::setDataSource(
97        int fd, int64_t offset, int64_t length) {
98    resetDataSource();
99
100    mFd = dup(fd);
101    mOffset = offset;
102    mLength = length;
103
104    // delay data source creation to prepareAsync() to avoid blocking
105    // the calling thread in setDataSource for any significant time.
106    return OK;
107}
108
109sp<MetaData> NuPlayer::GenericSource::getFileFormatMeta() const {
110    return mFileMeta;
111}
112
113status_t NuPlayer::GenericSource::initFromDataSource() {
114    sp<MediaExtractor> extractor;
115
116    CHECK(mDataSource != NULL);
117
118    if (mIsWidevine) {
119        String8 mimeType;
120        float confidence;
121        sp<AMessage> dummy;
122        bool success;
123
124        success = SniffWVM(mDataSource, &mimeType, &confidence, &dummy);
125        if (!success
126                || strcasecmp(
127                    mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM)) {
128            ALOGE("unsupported widevine mime: %s", mimeType.string());
129            return UNKNOWN_ERROR;
130        }
131
132        mWVMExtractor = new WVMExtractor(mDataSource);
133        mWVMExtractor->setAdaptiveStreamingMode(true);
134        if (mUIDValid) {
135            mWVMExtractor->setUID(mUID);
136        }
137        extractor = mWVMExtractor;
138    } else {
139        extractor = MediaExtractor::Create(mDataSource,
140                mSniffedMIME.empty() ? NULL: mSniffedMIME.c_str());
141    }
142
143    if (extractor == NULL) {
144        return UNKNOWN_ERROR;
145    }
146
147    if (extractor->getDrmFlag()) {
148        checkDrmStatus(mDataSource);
149    }
150
151    mFileMeta = extractor->getMetaData();
152    if (mFileMeta != NULL) {
153        int64_t duration;
154        if (mFileMeta->findInt64(kKeyDuration, &duration)) {
155            mDurationUs = duration;
156        }
157    }
158
159    int32_t totalBitrate = 0;
160
161    size_t numtracks = extractor->countTracks();
162    if (numtracks == 0) {
163        return UNKNOWN_ERROR;
164    }
165
166    for (size_t i = 0; i < numtracks; ++i) {
167        sp<MediaSource> track = extractor->getTrack(i);
168
169        sp<MetaData> meta = extractor->getTrackMetaData(i);
170
171        const char *mime;
172        CHECK(meta->findCString(kKeyMIMEType, &mime));
173
174        // Do the string compare immediately with "mime",
175        // we can't assume "mime" would stay valid after another
176        // extractor operation, some extractors might modify meta
177        // during getTrack() and make it invalid.
178        if (!strncasecmp(mime, "audio/", 6)) {
179            if (mAudioTrack.mSource == NULL) {
180                mAudioTrack.mIndex = i;
181                mAudioTrack.mSource = track;
182                mAudioTrack.mPackets =
183                    new AnotherPacketSource(mAudioTrack.mSource->getFormat());
184
185                if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) {
186                    mAudioIsVorbis = true;
187                } else {
188                    mAudioIsVorbis = false;
189                }
190            }
191        } else if (!strncasecmp(mime, "video/", 6)) {
192            if (mVideoTrack.mSource == NULL) {
193                mVideoTrack.mIndex = i;
194                mVideoTrack.mSource = track;
195                mVideoTrack.mPackets =
196                    new AnotherPacketSource(mVideoTrack.mSource->getFormat());
197
198                // check if the source requires secure buffers
199                int32_t secure;
200                if (meta->findInt32(kKeyRequiresSecureBuffers, &secure)
201                        && secure) {
202                    mIsWidevine = true;
203                    if (mUIDValid) {
204                        extractor->setUID(mUID);
205                    }
206                }
207            }
208        }
209
210        if (track != NULL) {
211            mSources.push(track);
212            int64_t durationUs;
213            if (meta->findInt64(kKeyDuration, &durationUs)) {
214                if (durationUs > mDurationUs) {
215                    mDurationUs = durationUs;
216                }
217            }
218
219            int32_t bitrate;
220            if (totalBitrate >= 0 && meta->findInt32(kKeyBitRate, &bitrate)) {
221                totalBitrate += bitrate;
222            } else {
223                totalBitrate = -1;
224            }
225        }
226    }
227
228    mBitrate = totalBitrate;
229
230    return OK;
231}
232
233void NuPlayer::GenericSource::checkDrmStatus(const sp<DataSource>& dataSource) {
234    dataSource->getDrmInfo(mDecryptHandle, &mDrmManagerClient);
235    if (mDecryptHandle != NULL) {
236        CHECK(mDrmManagerClient);
237        if (RightsStatus::RIGHTS_VALID != mDecryptHandle->status) {
238            sp<AMessage> msg = dupNotify();
239            msg->setInt32("what", kWhatDrmNoLicense);
240            msg->post();
241        }
242    }
243}
244
245int64_t NuPlayer::GenericSource::getLastReadPosition() {
246    if (mAudioTrack.mSource != NULL) {
247        return mAudioTimeUs;
248    } else if (mVideoTrack.mSource != NULL) {
249        return mVideoTimeUs;
250    } else {
251        return 0;
252    }
253}
254
255status_t NuPlayer::GenericSource::setBuffers(
256        bool audio, Vector<MediaBuffer *> &buffers) {
257    if (mIsWidevine && !audio) {
258        return mVideoTrack.mSource->setBuffers(buffers);
259    }
260    return INVALID_OPERATION;
261}
262
263NuPlayer::GenericSource::~GenericSource() {
264    if (mLooper != NULL) {
265        mLooper->unregisterHandler(id());
266        mLooper->stop();
267    }
268}
269
270void NuPlayer::GenericSource::prepareAsync() {
271    if (mLooper == NULL) {
272        mLooper = new ALooper;
273        mLooper->setName("generic");
274        mLooper->start();
275
276        mLooper->registerHandler(this);
277    }
278
279    sp<AMessage> msg = new AMessage(kWhatPrepareAsync, id());
280    msg->post();
281}
282
283void NuPlayer::GenericSource::onPrepareAsync() {
284    // delayed data source creation
285    if (mDataSource == NULL) {
286        if (!mUri.empty()) {
287            mIsWidevine = !strncasecmp(mUri.c_str(), "widevine://", 11);
288
289            mDataSource = DataSource::CreateFromURI(
290                   mHTTPService, mUri.c_str(), &mUriHeaders, &mContentType);
291        } else {
292            // set to false first, if the extractor
293            // comes back as secure, set it to true then.
294            mIsWidevine = false;
295
296            mDataSource = new FileSource(mFd, mOffset, mLength);
297        }
298
299        if (mDataSource == NULL) {
300            ALOGE("Failed to create data source!");
301            notifyPreparedAndCleanup(UNKNOWN_ERROR);
302            return;
303        }
304
305        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
306            mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get());
307        }
308
309        if (mIsWidevine || mCachedSource != NULL) {
310            schedulePollBuffering();
311        }
312    }
313
314    // check initial caching status
315    status_t err = prefillCacheIfNecessary();
316    if (err != OK) {
317        if (err == -EAGAIN) {
318            (new AMessage(kWhatPrepareAsync, id()))->post(200000);
319        } else {
320            ALOGE("Failed to prefill data cache!");
321            notifyPreparedAndCleanup(UNKNOWN_ERROR);
322        }
323        return;
324    }
325
326    // init extrator from data source
327    err = initFromDataSource();
328
329    if (err != OK) {
330        ALOGE("Failed to init from data source!");
331        notifyPreparedAndCleanup(err);
332        return;
333    }
334
335    if (mVideoTrack.mSource != NULL) {
336        sp<MetaData> meta = doGetFormatMeta(false /* audio */);
337        sp<AMessage> msg = new AMessage;
338        err = convertMetaDataToMessage(meta, &msg);
339        if(err != OK) {
340            notifyPreparedAndCleanup(err);
341            return;
342        }
343        notifyVideoSizeChanged(msg);
344    }
345
346    notifyFlagsChanged(
347            (mIsWidevine ? FLAG_SECURE : 0)
348            | FLAG_CAN_PAUSE
349            | FLAG_CAN_SEEK_BACKWARD
350            | FLAG_CAN_SEEK_FORWARD
351            | FLAG_CAN_SEEK);
352
353    notifyPrepared();
354}
355
356void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) {
357    if (err != OK) {
358        mMetaDataSize = -1ll;
359        mContentType = "";
360        mSniffedMIME = "";
361        mDataSource.clear();
362        mCachedSource.clear();
363
364        cancelPollBuffering();
365    }
366    notifyPrepared(err);
367}
368
369status_t NuPlayer::GenericSource::prefillCacheIfNecessary() {
370    CHECK(mDataSource != NULL);
371
372    if (mCachedSource == NULL) {
373        // no prefill if the data source is not cached
374        return OK;
375    }
376
377    // We're not doing this for streams that appear to be audio-only
378    // streams to ensure that even low bandwidth streams start
379    // playing back fairly instantly.
380    if (!strncasecmp(mContentType.string(), "audio/", 6)) {
381        return OK;
382    }
383
384    // We're going to prefill the cache before trying to instantiate
385    // the extractor below, as the latter is an operation that otherwise
386    // could block on the datasource for a significant amount of time.
387    // During that time we'd be unable to abort the preparation phase
388    // without this prefill.
389
390    // Initially make sure we have at least 192 KB for the sniff
391    // to complete without blocking.
392    static const size_t kMinBytesForSniffing = 192 * 1024;
393    static const size_t kDefaultMetaSize = 200000;
394
395    status_t finalStatus;
396
397    size_t cachedDataRemaining =
398            mCachedSource->approxDataRemaining(&finalStatus);
399
400    if (finalStatus != OK || (mMetaDataSize >= 0
401            && (off64_t)cachedDataRemaining >= mMetaDataSize)) {
402        ALOGV("stop caching, status %d, "
403                "metaDataSize %lld, cachedDataRemaining %zu",
404                finalStatus, mMetaDataSize, cachedDataRemaining);
405        return OK;
406    }
407
408    ALOGV("now cached %zu bytes of data", cachedDataRemaining);
409
410    if (mMetaDataSize < 0
411            && cachedDataRemaining >= kMinBytesForSniffing) {
412        String8 tmp;
413        float confidence;
414        sp<AMessage> meta;
415        if (!mCachedSource->sniff(&tmp, &confidence, &meta)) {
416            return UNKNOWN_ERROR;
417        }
418
419        // We successfully identified the file's extractor to
420        // be, remember this mime type so we don't have to
421        // sniff it again when we call MediaExtractor::Create()
422        mSniffedMIME = tmp.string();
423
424        if (meta == NULL
425                || !meta->findInt64("meta-data-size",
426                        reinterpret_cast<int64_t*>(&mMetaDataSize))) {
427            mMetaDataSize = kDefaultMetaSize;
428        }
429
430        if (mMetaDataSize < 0ll) {
431            ALOGE("invalid metaDataSize = %lld bytes", mMetaDataSize);
432            return UNKNOWN_ERROR;
433        }
434    }
435
436    return -EAGAIN;
437}
438
439void NuPlayer::GenericSource::start() {
440    ALOGI("start");
441
442    if (mAudioTrack.mSource != NULL) {
443        CHECK_EQ(mAudioTrack.mSource->start(), (status_t)OK);
444
445        postReadBuffer(MEDIA_TRACK_TYPE_AUDIO);
446    }
447
448    if (mVideoTrack.mSource != NULL) {
449        CHECK_EQ(mVideoTrack.mSource->start(), (status_t)OK);
450
451        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
452    }
453
454    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
455    mStarted = true;
456}
457
458void NuPlayer::GenericSource::stop() {
459    // nothing to do, just account for DRM playback status
460    setDrmPlaybackStatusIfNeeded(Playback::STOP, 0);
461    mStarted = false;
462}
463
464void NuPlayer::GenericSource::pause() {
465    // nothing to do, just account for DRM playback status
466    setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
467    mStarted = false;
468}
469
470void NuPlayer::GenericSource::resume() {
471    // nothing to do, just account for DRM playback status
472    setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000);
473    mStarted = true;
474}
475
476void NuPlayer::GenericSource::disconnect() {
477    if (mDataSource != NULL) {
478        // disconnect data source
479        if (mDataSource->flags() & DataSource::kIsCachingDataSource) {
480            static_cast<NuCachedSource2 *>(mDataSource.get())->disconnect();
481        }
482    }
483}
484
485void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) {
486    if (mDecryptHandle != NULL) {
487        mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position);
488    }
489    mSubtitleTrack.mPackets = new AnotherPacketSource(NULL);
490    mTimedTextTrack.mPackets = new AnotherPacketSource(NULL);
491}
492
493status_t NuPlayer::GenericSource::feedMoreTSData() {
494    return OK;
495}
496
497void NuPlayer::GenericSource::schedulePollBuffering() {
498    sp<AMessage> msg = new AMessage(kWhatPollBuffering, id());
499    msg->setInt32("generation", mPollBufferingGeneration);
500    msg->post(1000000ll);
501}
502
503void NuPlayer::GenericSource::cancelPollBuffering() {
504    ++mPollBufferingGeneration;
505}
506
507void NuPlayer::GenericSource::notifyBufferingUpdate(int percentage) {
508    sp<AMessage> msg = dupNotify();
509    msg->setInt32("what", kWhatBufferingUpdate);
510    msg->setInt32("percentage", percentage);
511    msg->post();
512}
513
514void NuPlayer::GenericSource::onPollBuffering() {
515    status_t finalStatus = UNKNOWN_ERROR;
516    int64_t cachedDurationUs = 0ll;
517
518    if (mCachedSource != NULL) {
519        size_t cachedDataRemaining =
520                mCachedSource->approxDataRemaining(&finalStatus);
521
522        if (finalStatus == OK) {
523            off64_t size;
524            int64_t bitrate = 0ll;
525            if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) {
526                bitrate = size * 8000000ll / mDurationUs;
527            } else if (mBitrate > 0) {
528                bitrate = mBitrate;
529            }
530            if (bitrate > 0) {
531                cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate;
532            }
533        }
534    } else if (mWVMExtractor != NULL) {
535        cachedDurationUs
536            = mWVMExtractor->getCachedDurationUs(&finalStatus);
537    }
538
539    if (finalStatus == ERROR_END_OF_STREAM) {
540        notifyBufferingUpdate(100);
541        cancelPollBuffering();
542        return;
543    } else if (cachedDurationUs > 0ll && mDurationUs > 0ll) {
544        int percentage = 100.0 * cachedDurationUs / mDurationUs;
545        if (percentage > 100) {
546            percentage = 100;
547        }
548
549        notifyBufferingUpdate(percentage);
550    }
551
552    schedulePollBuffering();
553}
554
555
556void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) {
557    switch (msg->what()) {
558      case kWhatPrepareAsync:
559      {
560          onPrepareAsync();
561          break;
562      }
563      case kWhatFetchSubtitleData:
564      {
565          fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
566                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
567          break;
568      }
569
570      case kWhatFetchTimedTextData:
571      {
572          fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
573                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
574          break;
575      }
576
577      case kWhatSendSubtitleData:
578      {
579          sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE,
580                  mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg);
581          break;
582      }
583
584      case kWhatSendTimedTextData:
585      {
586          sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT,
587                  mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg);
588          break;
589      }
590
591      case kWhatChangeAVSource:
592      {
593          int32_t trackIndex;
594          CHECK(msg->findInt32("trackIndex", &trackIndex));
595          const sp<MediaSource> source = mSources.itemAt(trackIndex);
596
597          Track* track;
598          const char *mime;
599          media_track_type trackType, counterpartType;
600          sp<MetaData> meta = source->getFormat();
601          meta->findCString(kKeyMIMEType, &mime);
602          if (!strncasecmp(mime, "audio/", 6)) {
603              track = &mAudioTrack;
604              trackType = MEDIA_TRACK_TYPE_AUDIO;
605              counterpartType = MEDIA_TRACK_TYPE_VIDEO;;
606          } else {
607              CHECK(!strncasecmp(mime, "video/", 6));
608              track = &mVideoTrack;
609              trackType = MEDIA_TRACK_TYPE_VIDEO;
610              counterpartType = MEDIA_TRACK_TYPE_AUDIO;;
611          }
612
613
614          if (track->mSource != NULL) {
615              track->mSource->stop();
616          }
617          track->mSource = source;
618          track->mSource->start();
619          track->mIndex = trackIndex;
620
621          status_t avail;
622          if (!track->mPackets->hasBufferAvailable(&avail)) {
623              // sync from other source
624              TRESPASS();
625              break;
626          }
627
628          int64_t timeUs, actualTimeUs;
629          const bool formatChange = true;
630          sp<AMessage> latestMeta = track->mPackets->getLatestEnqueuedMeta();
631          CHECK(latestMeta != NULL && latestMeta->findInt64("timeUs", &timeUs));
632          readBuffer(trackType, timeUs, &actualTimeUs, formatChange);
633          readBuffer(counterpartType, -1, NULL, formatChange);
634          ALOGV("timeUs %lld actualTimeUs %lld", timeUs, actualTimeUs);
635
636          break;
637      }
638      case kWhatPollBuffering:
639      {
640          int32_t generation;
641          CHECK(msg->findInt32("generation", &generation));
642          if (generation == mPollBufferingGeneration) {
643              onPollBuffering();
644          }
645          break;
646      }
647
648      case kWhatGetFormat:
649      {
650          onGetFormatMeta(msg);
651          break;
652      }
653
654      case kWhatGetSelectedTrack:
655      {
656          onGetSelectedTrack(msg);
657          break;
658      }
659
660      case kWhatSelectTrack:
661      {
662          onSelectTrack(msg);
663          break;
664      }
665
666      case kWhatSeek:
667      {
668          onSeek(msg);
669          break;
670      }
671
672      case kWhatReadBuffer:
673      {
674          onReadBuffer(msg);
675          break;
676      }
677
678      default:
679          Source::onMessageReceived(msg);
680          break;
681    }
682}
683
684void NuPlayer::GenericSource::fetchTextData(
685        uint32_t sendWhat,
686        media_track_type type,
687        int32_t curGen,
688        sp<AnotherPacketSource> packets,
689        sp<AMessage> msg) {
690    int32_t msgGeneration;
691    CHECK(msg->findInt32("generation", &msgGeneration));
692    if (msgGeneration != curGen) {
693        // stale
694        return;
695    }
696
697    int32_t avail;
698    if (packets->hasBufferAvailable(&avail)) {
699        return;
700    }
701
702    int64_t timeUs;
703    CHECK(msg->findInt64("timeUs", &timeUs));
704
705    int64_t subTimeUs;
706    readBuffer(type, timeUs, &subTimeUs);
707
708    int64_t delayUs = subTimeUs - timeUs;
709    if (msg->what() == kWhatFetchSubtitleData) {
710        const int64_t oneSecUs = 1000000ll;
711        delayUs -= oneSecUs;
712    }
713    sp<AMessage> msg2 = new AMessage(sendWhat, id());
714    msg2->setInt32("generation", msgGeneration);
715    msg2->post(delayUs < 0 ? 0 : delayUs);
716}
717
718void NuPlayer::GenericSource::sendTextData(
719        uint32_t what,
720        media_track_type type,
721        int32_t curGen,
722        sp<AnotherPacketSource> packets,
723        sp<AMessage> msg) {
724    int32_t msgGeneration;
725    CHECK(msg->findInt32("generation", &msgGeneration));
726    if (msgGeneration != curGen) {
727        // stale
728        return;
729    }
730
731    int64_t subTimeUs;
732    if (packets->nextBufferTime(&subTimeUs) != OK) {
733        return;
734    }
735
736    int64_t nextSubTimeUs;
737    readBuffer(type, -1, &nextSubTimeUs);
738
739    sp<ABuffer> buffer;
740    status_t dequeueStatus = packets->dequeueAccessUnit(&buffer);
741    if (dequeueStatus == OK) {
742        sp<AMessage> notify = dupNotify();
743        notify->setInt32("what", what);
744        notify->setBuffer("buffer", buffer);
745        notify->post();
746
747        const int64_t delayUs = nextSubTimeUs - subTimeUs;
748        msg->post(delayUs < 0 ? 0 : delayUs);
749    }
750}
751
752sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) {
753    sp<AMessage> msg = new AMessage(kWhatGetFormat, id());
754    msg->setInt32("audio", audio);
755
756    sp<AMessage> response;
757    void *format;
758    status_t err = msg->postAndAwaitResponse(&response);
759    if (err == OK && response != NULL) {
760        CHECK(response->findPointer("format", &format));
761        return (MetaData *)format;
762    } else {
763        return NULL;
764    }
765}
766
767void NuPlayer::GenericSource::onGetFormatMeta(sp<AMessage> msg) const {
768    int32_t audio;
769    CHECK(msg->findInt32("audio", &audio));
770
771    sp<AMessage> response = new AMessage;
772    sp<MetaData> format = doGetFormatMeta(audio);
773    response->setPointer("format", format.get());
774
775    uint32_t replyID;
776    CHECK(msg->senderAwaitsResponse(&replyID));
777    response->postReply(replyID);
778}
779
780sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const {
781    sp<MediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource;
782
783    if (source == NULL) {
784        return NULL;
785    }
786
787    return source->getFormat();
788}
789
790status_t NuPlayer::GenericSource::dequeueAccessUnit(
791        bool audio, sp<ABuffer> *accessUnit) {
792    Track *track = audio ? &mAudioTrack : &mVideoTrack;
793
794    if (track->mSource == NULL) {
795        return -EWOULDBLOCK;
796    }
797
798    if (mIsWidevine && !audio) {
799        // try to read a buffer as we may not have been able to the last time
800        postReadBuffer(MEDIA_TRACK_TYPE_VIDEO);
801    }
802
803    status_t finalResult;
804    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
805        return (finalResult == OK ? -EWOULDBLOCK : finalResult);
806    }
807
808    status_t result = track->mPackets->dequeueAccessUnit(accessUnit);
809
810    if (!track->mPackets->hasBufferAvailable(&finalResult)) {
811        postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO);
812    }
813
814    if (result != OK) {
815        if (mSubtitleTrack.mSource != NULL) {
816            mSubtitleTrack.mPackets->clear();
817            mFetchSubtitleDataGeneration++;
818        }
819        if (mTimedTextTrack.mSource != NULL) {
820            mTimedTextTrack.mPackets->clear();
821            mFetchTimedTextDataGeneration++;
822        }
823        return result;
824    }
825
826    int64_t timeUs;
827    status_t eosResult; // ignored
828    CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs));
829
830    if (mSubtitleTrack.mSource != NULL
831            && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) {
832        sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, id());
833        msg->setInt64("timeUs", timeUs);
834        msg->setInt32("generation", mFetchSubtitleDataGeneration);
835        msg->post();
836    }
837
838    if (mTimedTextTrack.mSource != NULL
839            && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) {
840        sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, id());
841        msg->setInt64("timeUs", timeUs);
842        msg->setInt32("generation", mFetchTimedTextDataGeneration);
843        msg->post();
844    }
845
846    return result;
847}
848
849status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) {
850    *durationUs = mDurationUs;
851    return OK;
852}
853
854size_t NuPlayer::GenericSource::getTrackCount() const {
855    return mSources.size();
856}
857
858sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const {
859    size_t trackCount = mSources.size();
860    if (trackIndex >= trackCount) {
861        return NULL;
862    }
863
864    sp<AMessage> format = new AMessage();
865    sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat();
866
867    const char *mime;
868    CHECK(meta->findCString(kKeyMIMEType, &mime));
869
870    int32_t trackType;
871    if (!strncasecmp(mime, "video/", 6)) {
872        trackType = MEDIA_TRACK_TYPE_VIDEO;
873    } else if (!strncasecmp(mime, "audio/", 6)) {
874        trackType = MEDIA_TRACK_TYPE_AUDIO;
875    } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) {
876        trackType = MEDIA_TRACK_TYPE_TIMEDTEXT;
877    } else {
878        trackType = MEDIA_TRACK_TYPE_UNKNOWN;
879    }
880    format->setInt32("type", trackType);
881
882    const char *lang;
883    if (!meta->findCString(kKeyMediaLanguage, &lang)) {
884        lang = "und";
885    }
886    format->setString("language", lang);
887
888    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
889        format->setString("mime", mime);
890
891        int32_t isAutoselect = 1, isDefault = 0, isForced = 0;
892        meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect);
893        meta->findInt32(kKeyTrackIsDefault, &isDefault);
894        meta->findInt32(kKeyTrackIsForced, &isForced);
895
896        format->setInt32("auto", !!isAutoselect);
897        format->setInt32("default", !!isDefault);
898        format->setInt32("forced", !!isForced);
899    }
900
901    return format;
902}
903
904ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const {
905    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, id());
906    msg->setInt32("type", type);
907
908    sp<AMessage> response;
909    int32_t index;
910    status_t err = msg->postAndAwaitResponse(&response);
911    if (err == OK && response != NULL) {
912        CHECK(response->findInt32("index", &index));
913        return index;
914    } else {
915        return -1;
916    }
917}
918
919void NuPlayer::GenericSource::onGetSelectedTrack(sp<AMessage> msg) const {
920    int32_t tmpType;
921    CHECK(msg->findInt32("type", &tmpType));
922    media_track_type type = (media_track_type)tmpType;
923
924    sp<AMessage> response = new AMessage;
925    ssize_t index = doGetSelectedTrack(type);
926    response->setInt32("index", index);
927
928    uint32_t replyID;
929    CHECK(msg->senderAwaitsResponse(&replyID));
930    response->postReply(replyID);
931}
932
933ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const {
934    const Track *track = NULL;
935    switch (type) {
936    case MEDIA_TRACK_TYPE_VIDEO:
937        track = &mVideoTrack;
938        break;
939    case MEDIA_TRACK_TYPE_AUDIO:
940        track = &mAudioTrack;
941        break;
942    case MEDIA_TRACK_TYPE_TIMEDTEXT:
943        track = &mTimedTextTrack;
944        break;
945    case MEDIA_TRACK_TYPE_SUBTITLE:
946        track = &mSubtitleTrack;
947        break;
948    default:
949        break;
950    }
951
952    if (track != NULL && track->mSource != NULL) {
953        return track->mIndex;
954    }
955
956    return -1;
957}
958
959status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select) {
960    ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex);
961    sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
962    msg->setInt32("trackIndex", trackIndex);
963    msg->setInt32("select", select);
964
965    sp<AMessage> response;
966    status_t err = msg->postAndAwaitResponse(&response);
967    if (err == OK && response != NULL) {
968        CHECK(response->findInt32("err", &err));
969    }
970
971    return err;
972}
973
974void NuPlayer::GenericSource::onSelectTrack(sp<AMessage> msg) {
975    int32_t trackIndex, select;
976    CHECK(msg->findInt32("trackIndex", &trackIndex));
977    CHECK(msg->findInt32("select", &select));
978
979    sp<AMessage> response = new AMessage;
980    status_t err = doSelectTrack(trackIndex, select);
981    response->setInt32("err", err);
982
983    uint32_t replyID;
984    CHECK(msg->senderAwaitsResponse(&replyID));
985    response->postReply(replyID);
986}
987
988status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select) {
989    if (trackIndex >= mSources.size()) {
990        return BAD_INDEX;
991    }
992
993    if (!select) {
994        Track* track = NULL;
995        if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) {
996            track = &mSubtitleTrack;
997            mFetchSubtitleDataGeneration++;
998        } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) {
999            track = &mTimedTextTrack;
1000            mFetchTimedTextDataGeneration++;
1001        }
1002        if (track == NULL) {
1003            return INVALID_OPERATION;
1004        }
1005        track->mSource->stop();
1006        track->mSource = NULL;
1007        track->mPackets->clear();
1008        return OK;
1009    }
1010
1011    const sp<MediaSource> source = mSources.itemAt(trackIndex);
1012    sp<MetaData> meta = source->getFormat();
1013    const char *mime;
1014    CHECK(meta->findCString(kKeyMIMEType, &mime));
1015    if (!strncasecmp(mime, "text/", 5)) {
1016        bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP);
1017        Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack;
1018        if (track->mSource != NULL && track->mIndex == trackIndex) {
1019            return OK;
1020        }
1021        track->mIndex = trackIndex;
1022        if (track->mSource != NULL) {
1023            track->mSource->stop();
1024        }
1025        track->mSource = mSources.itemAt(trackIndex);
1026        track->mSource->start();
1027        if (track->mPackets == NULL) {
1028            track->mPackets = new AnotherPacketSource(track->mSource->getFormat());
1029        } else {
1030            track->mPackets->clear();
1031            track->mPackets->setFormat(track->mSource->getFormat());
1032
1033        }
1034
1035        if (isSubtitle) {
1036            mFetchSubtitleDataGeneration++;
1037        } else {
1038            mFetchTimedTextDataGeneration++;
1039        }
1040
1041        return OK;
1042    } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) {
1043        bool audio = !strncasecmp(mime, "audio/", 6);
1044        Track *track = audio ? &mAudioTrack : &mVideoTrack;
1045        if (track->mSource != NULL && track->mIndex == trackIndex) {
1046            return OK;
1047        }
1048
1049        sp<AMessage> msg = new AMessage(kWhatChangeAVSource, id());
1050        msg->setInt32("trackIndex", trackIndex);
1051        msg->post();
1052        return OK;
1053    }
1054
1055    return INVALID_OPERATION;
1056}
1057
1058status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs) {
1059    sp<AMessage> msg = new AMessage(kWhatSeek, id());
1060    msg->setInt64("seekTimeUs", seekTimeUs);
1061
1062    sp<AMessage> response;
1063    status_t err = msg->postAndAwaitResponse(&response);
1064    if (err == OK && response != NULL) {
1065        CHECK(response->findInt32("err", &err));
1066    }
1067
1068    return err;
1069}
1070
1071void NuPlayer::GenericSource::onSeek(sp<AMessage> msg) {
1072    int64_t seekTimeUs;
1073    CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1074
1075    sp<AMessage> response = new AMessage;
1076    status_t err = doSeek(seekTimeUs);
1077    response->setInt32("err", err);
1078
1079    uint32_t replyID;
1080    CHECK(msg->senderAwaitsResponse(&replyID));
1081    response->postReply(replyID);
1082}
1083
1084status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs) {
1085    if (mVideoTrack.mSource != NULL) {
1086        int64_t actualTimeUs;
1087        readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, &actualTimeUs);
1088
1089        seekTimeUs = actualTimeUs;
1090    }
1091
1092    if (mAudioTrack.mSource != NULL) {
1093        readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs);
1094    }
1095
1096    setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000);
1097    if (!mStarted) {
1098        setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0);
1099    }
1100    return OK;
1101}
1102
1103sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer(
1104        MediaBuffer* mb,
1105        media_track_type trackType,
1106        int64_t *actualTimeUs) {
1107    bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO;
1108    size_t outLength = mb->range_length();
1109
1110    if (audio && mAudioIsVorbis) {
1111        outLength += sizeof(int32_t);
1112    }
1113
1114    sp<ABuffer> ab;
1115    if (mIsWidevine && !audio) {
1116        // data is already provided in the buffer
1117        ab = new ABuffer(NULL, mb->range_length());
1118        ab->meta()->setPointer("mediaBuffer", mb);
1119        mb->add_ref();
1120    } else {
1121        ab = new ABuffer(outLength);
1122        memcpy(ab->data(),
1123               (const uint8_t *)mb->data() + mb->range_offset(),
1124               mb->range_length());
1125    }
1126
1127    if (audio && mAudioIsVorbis) {
1128        int32_t numPageSamples;
1129        if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) {
1130            numPageSamples = -1;
1131        }
1132
1133        uint8_t* abEnd = ab->data() + mb->range_length();
1134        memcpy(abEnd, &numPageSamples, sizeof(numPageSamples));
1135    }
1136
1137    sp<AMessage> meta = ab->meta();
1138
1139    int64_t timeUs;
1140    CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs));
1141    meta->setInt64("timeUs", timeUs);
1142
1143    if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) {
1144        const char *mime;
1145        CHECK(mTimedTextTrack.mSource != NULL
1146                && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime));
1147        meta->setString("mime", mime);
1148    }
1149
1150    int64_t durationUs;
1151    if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) {
1152        meta->setInt64("durationUs", durationUs);
1153    }
1154
1155    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
1156        meta->setInt32("trackIndex", mSubtitleTrack.mIndex);
1157    }
1158
1159    if (actualTimeUs) {
1160        *actualTimeUs = timeUs;
1161    }
1162
1163    mb->release();
1164    mb = NULL;
1165
1166    return ab;
1167}
1168
1169void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) {
1170    Mutex::Autolock _l(mReadBufferLock);
1171
1172    if ((mPendingReadBufferTypes & (1 << trackType)) == 0) {
1173        mPendingReadBufferTypes |= (1 << trackType);
1174        sp<AMessage> msg = new AMessage(kWhatReadBuffer, id());
1175        msg->setInt32("trackType", trackType);
1176        msg->post();
1177    }
1178}
1179
1180void NuPlayer::GenericSource::onReadBuffer(sp<AMessage> msg) {
1181    int32_t tmpType;
1182    CHECK(msg->findInt32("trackType", &tmpType));
1183    media_track_type trackType = (media_track_type)tmpType;
1184    {
1185        // only protect the variable change, as readBuffer may
1186        // take considerable time.  This may result in one extra
1187        // read being processed, but that is benign.
1188        Mutex::Autolock _l(mReadBufferLock);
1189        mPendingReadBufferTypes &= ~(1 << trackType);
1190    }
1191    readBuffer(trackType);
1192}
1193
1194void NuPlayer::GenericSource::readBuffer(
1195        media_track_type trackType, int64_t seekTimeUs, int64_t *actualTimeUs, bool formatChange) {
1196    Track *track;
1197    size_t maxBuffers = 1;
1198    switch (trackType) {
1199        case MEDIA_TRACK_TYPE_VIDEO:
1200            track = &mVideoTrack;
1201            break;
1202        case MEDIA_TRACK_TYPE_AUDIO:
1203            track = &mAudioTrack;
1204            maxBuffers = 64;
1205            break;
1206        case MEDIA_TRACK_TYPE_SUBTITLE:
1207            track = &mSubtitleTrack;
1208            break;
1209        case MEDIA_TRACK_TYPE_TIMEDTEXT:
1210            track = &mTimedTextTrack;
1211            break;
1212        default:
1213            TRESPASS();
1214    }
1215
1216    if (track->mSource == NULL) {
1217        return;
1218    }
1219
1220    if (actualTimeUs) {
1221        *actualTimeUs = seekTimeUs;
1222    }
1223
1224    MediaSource::ReadOptions options;
1225
1226    bool seeking = false;
1227
1228    if (seekTimeUs >= 0) {
1229        options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC);
1230        seeking = true;
1231    }
1232
1233    if (mIsWidevine && trackType != MEDIA_TRACK_TYPE_AUDIO) {
1234        options.setNonBlocking();
1235    }
1236
1237    for (size_t numBuffers = 0; numBuffers < maxBuffers; ) {
1238        MediaBuffer *mbuf;
1239        status_t err = track->mSource->read(&mbuf, &options);
1240
1241        options.clearSeekTo();
1242
1243        if (err == OK) {
1244            int64_t timeUs;
1245            CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs));
1246            if (trackType == MEDIA_TRACK_TYPE_AUDIO) {
1247                mAudioTimeUs = timeUs;
1248            } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) {
1249                mVideoTimeUs = timeUs;
1250            }
1251
1252            // formatChange && seeking: track whose source is changed during selection
1253            // formatChange && !seeking: track whose source is not changed during selection
1254            // !formatChange: normal seek
1255            if ((seeking || formatChange)
1256                    && (trackType == MEDIA_TRACK_TYPE_AUDIO
1257                    || trackType == MEDIA_TRACK_TYPE_VIDEO)) {
1258                ATSParser::DiscontinuityType type = formatChange
1259                        ? (seeking
1260                                ? ATSParser::DISCONTINUITY_FORMATCHANGE
1261                                : ATSParser::DISCONTINUITY_NONE)
1262                        : ATSParser::DISCONTINUITY_SEEK;
1263                track->mPackets->queueDiscontinuity( type, NULL, true /* discard */);
1264            }
1265
1266            sp<ABuffer> buffer = mediaBufferToABuffer(mbuf, trackType, actualTimeUs);
1267            track->mPackets->queueAccessUnit(buffer);
1268            formatChange = false;
1269            seeking = false;
1270            ++numBuffers;
1271        } else if (err == WOULD_BLOCK) {
1272            break;
1273        } else if (err == INFO_FORMAT_CHANGED) {
1274#if 0
1275            track->mPackets->queueDiscontinuity(
1276                    ATSParser::DISCONTINUITY_FORMATCHANGE,
1277                    NULL,
1278                    false /* discard */);
1279#endif
1280        } else {
1281            track->mPackets->signalEOS(err);
1282            break;
1283        }
1284    }
1285}
1286
1287}  // namespace android
1288