NuPlayer.cpp revision e427abf1ea252ff305fc33aacdd2e83cf34891b5 
1/*
2 * Copyright (C) 2010 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 "NuPlayer"
19#include <utils/Log.h>
20
21#include "NuPlayer.h"
22
23#include "HTTPLiveSource.h"
24#include "NuPlayerDecoder.h"
25#include "NuPlayerDecoderPassThrough.h"
26#include "NuPlayerDriver.h"
27#include "NuPlayerRenderer.h"
28#include "NuPlayerSource.h"
29#include "RTSPSource.h"
30#include "StreamingSource.h"
31#include "GenericSource.h"
32#include "TextDescriptions.h"
33
34#include "ATSParser.h"
35
36#include <media/stagefright/foundation/hexdump.h>
37#include <media/stagefright/foundation/ABuffer.h>
38#include <media/stagefright/foundation/ADebug.h>
39#include <media/stagefright/foundation/AMessage.h>
40#include <media/stagefright/MediaBuffer.h>
41#include <media/stagefright/MediaDefs.h>
42#include <media/stagefright/MediaErrors.h>
43#include <media/stagefright/MetaData.h>
44#include <gui/IGraphicBufferProducer.h>
45
46#include "avc_utils.h"
47
48#include "ESDS.h"
49#include <media/stagefright/Utils.h>
50
51namespace android {
52
53// TODO optimize buffer size for power consumption
54// The offload read buffer size is 32 KB but 24 KB uses less power.
55const size_t NuPlayer::kAggregateBufferSizeBytes = 24 * 1024;
56
57struct NuPlayer::Action : public RefBase {
58    Action() {}
59
60    virtual void execute(NuPlayer *player) = 0;
61
62private:
63    DISALLOW_EVIL_CONSTRUCTORS(Action);
64};
65
66struct NuPlayer::SeekAction : public Action {
67    SeekAction(int64_t seekTimeUs, bool needNotify)
68        : mSeekTimeUs(seekTimeUs),
69          mNeedNotify(needNotify) {
70    }
71
72    virtual void execute(NuPlayer *player) {
73        player->performSeek(mSeekTimeUs, mNeedNotify);
74    }
75
76private:
77    int64_t mSeekTimeUs;
78    bool mNeedNotify;
79
80    DISALLOW_EVIL_CONSTRUCTORS(SeekAction);
81};
82
83struct NuPlayer::SetSurfaceAction : public Action {
84    SetSurfaceAction(const sp<NativeWindowWrapper> &wrapper)
85        : mWrapper(wrapper) {
86    }
87
88    virtual void execute(NuPlayer *player) {
89        player->performSetSurface(mWrapper);
90    }
91
92private:
93    sp<NativeWindowWrapper> mWrapper;
94
95    DISALLOW_EVIL_CONSTRUCTORS(SetSurfaceAction);
96};
97
98struct NuPlayer::ShutdownDecoderAction : public Action {
99    ShutdownDecoderAction(bool audio, bool video)
100        : mAudio(audio),
101          mVideo(video) {
102    }
103
104    virtual void execute(NuPlayer *player) {
105        player->performDecoderShutdown(mAudio, mVideo);
106    }
107
108private:
109    bool mAudio;
110    bool mVideo;
111
112    DISALLOW_EVIL_CONSTRUCTORS(ShutdownDecoderAction);
113};
114
115struct NuPlayer::PostMessageAction : public Action {
116    PostMessageAction(const sp<AMessage> &msg)
117        : mMessage(msg) {
118    }
119
120    virtual void execute(NuPlayer *) {
121        mMessage->post();
122    }
123
124private:
125    sp<AMessage> mMessage;
126
127    DISALLOW_EVIL_CONSTRUCTORS(PostMessageAction);
128};
129
130// Use this if there's no state necessary to save in order to execute
131// the action.
132struct NuPlayer::SimpleAction : public Action {
133    typedef void (NuPlayer::*ActionFunc)();
134
135    SimpleAction(ActionFunc func)
136        : mFunc(func) {
137    }
138
139    virtual void execute(NuPlayer *player) {
140        (player->*mFunc)();
141    }
142
143private:
144    ActionFunc mFunc;
145
146    DISALLOW_EVIL_CONSTRUCTORS(SimpleAction);
147};
148
149////////////////////////////////////////////////////////////////////////////////
150
151NuPlayer::NuPlayer()
152    : mUIDValid(false),
153      mSourceFlags(0),
154      mCurrentPositionUs(0),
155      mVideoIsAVC(false),
156      mOffloadAudio(false),
157      mCurrentOffloadInfo(AUDIO_INFO_INITIALIZER),
158      mAudioDecoderGeneration(0),
159      mVideoDecoderGeneration(0),
160      mAudioEOS(false),
161      mVideoEOS(false),
162      mScanSourcesPending(false),
163      mScanSourcesGeneration(0),
164      mPollDurationGeneration(0),
165      mTimedTextGeneration(0),
166      mTimeDiscontinuityPending(false),
167      mFlushingAudio(NONE),
168      mFlushingVideo(NONE),
169      mSkipRenderingAudioUntilMediaTimeUs(-1ll),
170      mSkipRenderingVideoUntilMediaTimeUs(-1ll),
171      mVideoLateByUs(0ll),
172      mNumFramesTotal(0ll),
173      mNumFramesDropped(0ll),
174      mVideoScalingMode(NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW),
175      mStarted(false) {
176}
177
178NuPlayer::~NuPlayer() {
179}
180
181void NuPlayer::setUID(uid_t uid) {
182    mUIDValid = true;
183    mUID = uid;
184}
185
186void NuPlayer::setDriver(const wp<NuPlayerDriver> &driver) {
187    mDriver = driver;
188}
189
190void NuPlayer::setDataSourceAsync(const sp<IStreamSource> &source) {
191    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
192
193    sp<AMessage> notify = new AMessage(kWhatSourceNotify, id());
194
195    msg->setObject("source", new StreamingSource(notify, source));
196    msg->post();
197}
198
199static bool IsHTTPLiveURL(const char *url) {
200    if (!strncasecmp("http://", url, 7)
201            || !strncasecmp("https://", url, 8)
202            || !strncasecmp("file://", url, 7)) {
203        size_t len = strlen(url);
204        if (len >= 5 && !strcasecmp(".m3u8", &url[len - 5])) {
205            return true;
206        }
207
208        if (strstr(url,"m3u8")) {
209            return true;
210        }
211    }
212
213    return false;
214}
215
216void NuPlayer::setDataSourceAsync(
217        const sp<IMediaHTTPService> &httpService,
218        const char *url,
219        const KeyedVector<String8, String8> *headers) {
220
221    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
222    size_t len = strlen(url);
223
224    sp<AMessage> notify = new AMessage(kWhatSourceNotify, id());
225
226    sp<Source> source;
227    if (IsHTTPLiveURL(url)) {
228        source = new HTTPLiveSource(notify, httpService, url, headers);
229    } else if (!strncasecmp(url, "rtsp://", 7)) {
230        source = new RTSPSource(
231                notify, httpService, url, headers, mUIDValid, mUID);
232    } else if ((!strncasecmp(url, "http://", 7)
233                || !strncasecmp(url, "https://", 8))
234                    && ((len >= 4 && !strcasecmp(".sdp", &url[len - 4]))
235                    || strstr(url, ".sdp?"))) {
236        source = new RTSPSource(
237                notify, httpService, url, headers, mUIDValid, mUID, true);
238    } else {
239        sp<GenericSource> genericSource =
240                new GenericSource(notify, mUIDValid, mUID);
241        // Don't set FLAG_SECURE on mSourceFlags here for widevine.
242        // The correct flags will be updated in Source::kWhatFlagsChanged
243        // handler when  GenericSource is prepared.
244
245        status_t err = genericSource->setDataSource(httpService, url, headers);
246
247        if (err == OK) {
248            source = genericSource;
249        } else {
250            ALOGE("Failed to set data source!");
251        }
252    }
253    msg->setObject("source", source);
254    msg->post();
255}
256
257void NuPlayer::setDataSourceAsync(int fd, int64_t offset, int64_t length) {
258    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
259
260    sp<AMessage> notify = new AMessage(kWhatSourceNotify, id());
261
262    sp<GenericSource> source =
263            new GenericSource(notify, mUIDValid, mUID);
264
265    status_t err = source->setDataSource(fd, offset, length);
266
267    if (err != OK) {
268        ALOGE("Failed to set data source!");
269        source = NULL;
270    }
271
272    msg->setObject("source", source);
273    msg->post();
274}
275
276void NuPlayer::prepareAsync() {
277    (new AMessage(kWhatPrepare, id()))->post();
278}
279
280void NuPlayer::setVideoSurfaceTextureAsync(
281        const sp<IGraphicBufferProducer> &bufferProducer) {
282    sp<AMessage> msg = new AMessage(kWhatSetVideoNativeWindow, id());
283
284    if (bufferProducer == NULL) {
285        msg->setObject("native-window", NULL);
286    } else {
287        msg->setObject(
288                "native-window",
289                new NativeWindowWrapper(
290                    new Surface(bufferProducer, true /* controlledByApp */)));
291    }
292
293    msg->post();
294}
295
296void NuPlayer::setAudioSink(const sp<MediaPlayerBase::AudioSink> &sink) {
297    sp<AMessage> msg = new AMessage(kWhatSetAudioSink, id());
298    msg->setObject("sink", sink);
299    msg->post();
300}
301
302void NuPlayer::start() {
303    (new AMessage(kWhatStart, id()))->post();
304}
305
306void NuPlayer::pause() {
307    (new AMessage(kWhatPause, id()))->post();
308}
309
310void NuPlayer::resume() {
311    (new AMessage(kWhatResume, id()))->post();
312}
313
314void NuPlayer::resetAsync() {
315    if (mSource != NULL) {
316        // During a reset, the data source might be unresponsive already, we need to
317        // disconnect explicitly so that reads exit promptly.
318        // We can't queue the disconnect request to the looper, as it might be
319        // queued behind a stuck read and never gets processed.
320        // Doing a disconnect outside the looper to allows the pending reads to exit
321        // (either successfully or with error).
322        mSource->disconnect();
323    }
324
325    (new AMessage(kWhatReset, id()))->post();
326}
327
328void NuPlayer::seekToAsync(int64_t seekTimeUs, bool needNotify) {
329    sp<AMessage> msg = new AMessage(kWhatSeek, id());
330    msg->setInt64("seekTimeUs", seekTimeUs);
331    msg->setInt32("needNotify", needNotify);
332    msg->post();
333}
334
335// static
336bool NuPlayer::IsFlushingState(FlushStatus state, bool *needShutdown) {
337    switch (state) {
338        case FLUSHING_DECODER:
339            if (needShutdown != NULL) {
340                *needShutdown = false;
341            }
342            return true;
343
344        case FLUSHING_DECODER_SHUTDOWN:
345            if (needShutdown != NULL) {
346                *needShutdown = true;
347            }
348            return true;
349
350        default:
351            return false;
352    }
353}
354
355void NuPlayer::writeTrackInfo(
356        Parcel* reply, const sp<AMessage> format) const {
357    int32_t trackType;
358    CHECK(format->findInt32("type", &trackType));
359
360    AString lang;
361    CHECK(format->findString("language", &lang));
362
363    reply->writeInt32(2); // write something non-zero
364    reply->writeInt32(trackType);
365    reply->writeString16(String16(lang.c_str()));
366
367    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
368        AString mime;
369        CHECK(format->findString("mime", &mime));
370
371        int32_t isAuto, isDefault, isForced;
372        CHECK(format->findInt32("auto", &isAuto));
373        CHECK(format->findInt32("default", &isDefault));
374        CHECK(format->findInt32("forced", &isForced));
375
376        reply->writeString16(String16(mime.c_str()));
377        reply->writeInt32(isAuto);
378        reply->writeInt32(isDefault);
379        reply->writeInt32(isForced);
380    }
381}
382
383void NuPlayer::onMessageReceived(const sp<AMessage> &msg) {
384    switch (msg->what()) {
385        case kWhatSetDataSource:
386        {
387            ALOGV("kWhatSetDataSource");
388
389            CHECK(mSource == NULL);
390
391            status_t err = OK;
392            sp<RefBase> obj;
393            CHECK(msg->findObject("source", &obj));
394            if (obj != NULL) {
395                mSource = static_cast<Source *>(obj.get());
396            } else {
397                err = UNKNOWN_ERROR;
398            }
399
400            CHECK(mDriver != NULL);
401            sp<NuPlayerDriver> driver = mDriver.promote();
402            if (driver != NULL) {
403                driver->notifySetDataSourceCompleted(err);
404            }
405            break;
406        }
407
408        case kWhatPrepare:
409        {
410            mSource->prepareAsync();
411            break;
412        }
413
414        case kWhatGetTrackInfo:
415        {
416            uint32_t replyID;
417            CHECK(msg->senderAwaitsResponse(&replyID));
418
419            Parcel* reply;
420            CHECK(msg->findPointer("reply", (void**)&reply));
421
422            size_t inbandTracks = 0;
423            if (mSource != NULL) {
424                inbandTracks = mSource->getTrackCount();
425            }
426
427            size_t ccTracks = 0;
428            if (mCCDecoder != NULL) {
429                ccTracks = mCCDecoder->getTrackCount();
430            }
431
432            // total track count
433            reply->writeInt32(inbandTracks + ccTracks);
434
435            // write inband tracks
436            for (size_t i = 0; i < inbandTracks; ++i) {
437                writeTrackInfo(reply, mSource->getTrackInfo(i));
438            }
439
440            // write CC track
441            for (size_t i = 0; i < ccTracks; ++i) {
442                writeTrackInfo(reply, mCCDecoder->getTrackInfo(i));
443            }
444
445            sp<AMessage> response = new AMessage;
446            response->postReply(replyID);
447            break;
448        }
449
450        case kWhatGetSelectedTrack:
451        {
452            status_t err = INVALID_OPERATION;
453            if (mSource != NULL) {
454                err = OK;
455
456                int32_t type32;
457                CHECK(msg->findInt32("type", (int32_t*)&type32));
458                media_track_type type = (media_track_type)type32;
459                ssize_t selectedTrack = mSource->getSelectedTrack(type);
460
461                Parcel* reply;
462                CHECK(msg->findPointer("reply", (void**)&reply));
463                reply->writeInt32(selectedTrack);
464            }
465
466            sp<AMessage> response = new AMessage;
467            response->setInt32("err", err);
468
469            uint32_t replyID;
470            CHECK(msg->senderAwaitsResponse(&replyID));
471            response->postReply(replyID);
472            break;
473        }
474
475        case kWhatSelectTrack:
476        {
477            uint32_t replyID;
478            CHECK(msg->senderAwaitsResponse(&replyID));
479
480            size_t trackIndex;
481            int32_t select;
482            CHECK(msg->findSize("trackIndex", &trackIndex));
483            CHECK(msg->findInt32("select", &select));
484
485            status_t err = INVALID_OPERATION;
486
487            size_t inbandTracks = 0;
488            if (mSource != NULL) {
489                inbandTracks = mSource->getTrackCount();
490            }
491            size_t ccTracks = 0;
492            if (mCCDecoder != NULL) {
493                ccTracks = mCCDecoder->getTrackCount();
494            }
495
496            if (trackIndex < inbandTracks) {
497                err = mSource->selectTrack(trackIndex, select);
498
499                if (!select && err == OK) {
500                    int32_t type;
501                    sp<AMessage> info = mSource->getTrackInfo(trackIndex);
502                    if (info != NULL
503                            && info->findInt32("type", &type)
504                            && type == MEDIA_TRACK_TYPE_TIMEDTEXT) {
505                        ++mTimedTextGeneration;
506                    }
507                }
508            } else {
509                trackIndex -= inbandTracks;
510
511                if (trackIndex < ccTracks) {
512                    err = mCCDecoder->selectTrack(trackIndex, select);
513                }
514            }
515
516            sp<AMessage> response = new AMessage;
517            response->setInt32("err", err);
518
519            response->postReply(replyID);
520            break;
521        }
522
523        case kWhatPollDuration:
524        {
525            int32_t generation;
526            CHECK(msg->findInt32("generation", &generation));
527
528            if (generation != mPollDurationGeneration) {
529                // stale
530                break;
531            }
532
533            int64_t durationUs;
534            if (mDriver != NULL && mSource->getDuration(&durationUs) == OK) {
535                sp<NuPlayerDriver> driver = mDriver.promote();
536                if (driver != NULL) {
537                    driver->notifyDuration(durationUs);
538                }
539            }
540
541            msg->post(1000000ll);  // poll again in a second.
542            break;
543        }
544
545        case kWhatSetVideoNativeWindow:
546        {
547            ALOGV("kWhatSetVideoNativeWindow");
548
549            mDeferredActions.push_back(
550                    new ShutdownDecoderAction(
551                        false /* audio */, true /* video */));
552
553            sp<RefBase> obj;
554            CHECK(msg->findObject("native-window", &obj));
555
556            mDeferredActions.push_back(
557                    new SetSurfaceAction(
558                        static_cast<NativeWindowWrapper *>(obj.get())));
559
560            if (obj != NULL) {
561                if (mStarted && mVideoDecoder != NULL) {
562                    // Issue a seek to refresh the video screen only if started otherwise
563                    // the extractor may not yet be started and will assert.
564                    // If the video decoder is not set (perhaps audio only in this case)
565                    // do not perform a seek as it is not needed.
566                    mDeferredActions.push_back(
567                            new SeekAction(mCurrentPositionUs, false /* needNotify */));
568                }
569
570                // If there is a new surface texture, instantiate decoders
571                // again if possible.
572                mDeferredActions.push_back(
573                        new SimpleAction(&NuPlayer::performScanSources));
574            }
575
576            processDeferredActions();
577            break;
578        }
579
580        case kWhatSetAudioSink:
581        {
582            ALOGV("kWhatSetAudioSink");
583
584            sp<RefBase> obj;
585            CHECK(msg->findObject("sink", &obj));
586
587            mAudioSink = static_cast<MediaPlayerBase::AudioSink *>(obj.get());
588            break;
589        }
590
591        case kWhatStart:
592        {
593            ALOGV("kWhatStart");
594
595            mVideoIsAVC = false;
596            mOffloadAudio = false;
597            mAudioEOS = false;
598            mVideoEOS = false;
599            mSkipRenderingAudioUntilMediaTimeUs = -1;
600            mSkipRenderingVideoUntilMediaTimeUs = -1;
601            mVideoLateByUs = 0;
602            mNumFramesTotal = 0;
603            mNumFramesDropped = 0;
604            mStarted = true;
605
606            /* instantiate decoders now for secure playback */
607            if (mSourceFlags & Source::FLAG_SECURE) {
608                if (mNativeWindow != NULL) {
609                    instantiateDecoder(false, &mVideoDecoder);
610                }
611
612                if (mAudioSink != NULL) {
613                    instantiateDecoder(true, &mAudioDecoder);
614                }
615            }
616
617            mSource->start();
618
619            uint32_t flags = 0;
620
621            if (mSource->isRealTime()) {
622                flags |= Renderer::FLAG_REAL_TIME;
623            }
624
625            sp<MetaData> audioMeta = mSource->getFormatMeta(true /* audio */);
626            audio_stream_type_t streamType = AUDIO_STREAM_MUSIC;
627            if (mAudioSink != NULL) {
628                streamType = mAudioSink->getAudioStreamType();
629            }
630
631            sp<AMessage> videoFormat = mSource->getFormat(false /* audio */);
632
633            mOffloadAudio =
634                canOffloadStream(audioMeta, (videoFormat != NULL),
635                                 true /* is_streaming */, streamType);
636            if (mOffloadAudio) {
637                flags |= Renderer::FLAG_OFFLOAD_AUDIO;
638            }
639
640            mRenderer = new Renderer(
641                    mAudioSink,
642                    new AMessage(kWhatRendererNotify, id()),
643                    flags);
644
645            mRendererLooper = new ALooper;
646            mRendererLooper->setName("NuPlayerRenderer");
647            mRendererLooper->start(false, false, ANDROID_PRIORITY_AUDIO);
648            mRendererLooper->registerHandler(mRenderer);
649
650            sp<MetaData> meta = getFileMeta();
651            int32_t rate;
652            if (meta != NULL
653                    && meta->findInt32(kKeyFrameRate, &rate) && rate > 0) {
654                mRenderer->setVideoFrameRate(rate);
655            }
656
657            postScanSources();
658            break;
659        }
660
661        case kWhatScanSources:
662        {
663            int32_t generation;
664            CHECK(msg->findInt32("generation", &generation));
665            if (generation != mScanSourcesGeneration) {
666                // Drop obsolete msg.
667                break;
668            }
669
670            mScanSourcesPending = false;
671
672            ALOGV("scanning sources haveAudio=%d, haveVideo=%d",
673                 mAudioDecoder != NULL, mVideoDecoder != NULL);
674
675            bool mHadAnySourcesBefore =
676                (mAudioDecoder != NULL) || (mVideoDecoder != NULL);
677
678            // initialize video before audio because successful initialization of
679            // video may change deep buffer mode of audio.
680            if (mNativeWindow != NULL) {
681                instantiateDecoder(false, &mVideoDecoder);
682            }
683
684            if (mAudioSink != NULL) {
685                if (mOffloadAudio) {
686                    // open audio sink early under offload mode.
687                    sp<AMessage> format = mSource->getFormat(true /*audio*/);
688                    openAudioSink(format, true /*offloadOnly*/);
689                }
690                instantiateDecoder(true, &mAudioDecoder);
691            }
692
693            if (!mHadAnySourcesBefore
694                    && (mAudioDecoder != NULL || mVideoDecoder != NULL)) {
695                // This is the first time we've found anything playable.
696
697                if (mSourceFlags & Source::FLAG_DYNAMIC_DURATION) {
698                    schedulePollDuration();
699                }
700            }
701
702            status_t err;
703            if ((err = mSource->feedMoreTSData()) != OK) {
704                if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
705                    // We're not currently decoding anything (no audio or
706                    // video tracks found) and we just ran out of input data.
707
708                    if (err == ERROR_END_OF_STREAM) {
709                        notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
710                    } else {
711                        notifyListener(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, err);
712                    }
713                }
714                break;
715            }
716
717            if ((mAudioDecoder == NULL && mAudioSink != NULL)
718                    || (mVideoDecoder == NULL && mNativeWindow != NULL)) {
719                msg->post(100000ll);
720                mScanSourcesPending = true;
721            }
722            break;
723        }
724
725        case kWhatVideoNotify:
726        case kWhatAudioNotify:
727        {
728            bool audio = msg->what() == kWhatAudioNotify;
729
730            int32_t currentDecoderGeneration =
731                (audio? mAudioDecoderGeneration : mVideoDecoderGeneration);
732            int32_t requesterGeneration = currentDecoderGeneration - 1;
733            CHECK(msg->findInt32("generation", &requesterGeneration));
734
735            if (requesterGeneration != currentDecoderGeneration) {
736                ALOGV("got message from old %s decoder, generation(%d:%d)",
737                        audio ? "audio" : "video", requesterGeneration,
738                        currentDecoderGeneration);
739                sp<AMessage> reply;
740                if (!(msg->findMessage("reply", &reply))) {
741                    return;
742                }
743
744                reply->setInt32("err", INFO_DISCONTINUITY);
745                reply->post();
746                return;
747            }
748
749            int32_t what;
750            CHECK(msg->findInt32("what", &what));
751
752            if (what == Decoder::kWhatFillThisBuffer) {
753                status_t err = feedDecoderInputData(
754                        audio, msg);
755
756                if (err == -EWOULDBLOCK) {
757                    if (mSource->feedMoreTSData() == OK) {
758                        msg->post(10 * 1000ll);
759                    }
760                }
761            } else if (what == Decoder::kWhatEOS) {
762                int32_t err;
763                CHECK(msg->findInt32("err", &err));
764
765                if (err == ERROR_END_OF_STREAM) {
766                    ALOGV("got %s decoder EOS", audio ? "audio" : "video");
767                } else {
768                    ALOGV("got %s decoder EOS w/ error %d",
769                         audio ? "audio" : "video",
770                         err);
771                }
772
773                mRenderer->queueEOS(audio, err);
774            } else if (what == Decoder::kWhatFlushCompleted) {
775                bool needShutdown;
776
777                if (audio) {
778                    CHECK(IsFlushingState(mFlushingAudio, &needShutdown));
779                    mFlushingAudio = FLUSHED;
780                } else {
781                    CHECK(IsFlushingState(mFlushingVideo, &needShutdown));
782                    mFlushingVideo = FLUSHED;
783
784                    mVideoLateByUs = 0;
785                }
786
787                ALOGV("decoder %s flush completed", audio ? "audio" : "video");
788
789                if (needShutdown) {
790                    ALOGV("initiating %s decoder shutdown",
791                         audio ? "audio" : "video");
792
793                    getDecoder(audio)->initiateShutdown();
794
795                    if (audio) {
796                        mFlushingAudio = SHUTTING_DOWN_DECODER;
797                    } else {
798                        mFlushingVideo = SHUTTING_DOWN_DECODER;
799                    }
800                }
801
802                finishFlushIfPossible();
803            } else if (what == Decoder::kWhatOutputFormatChanged) {
804                sp<AMessage> format;
805                CHECK(msg->findMessage("format", &format));
806
807                if (audio) {
808                    openAudioSink(format, false /*offloadOnly*/);
809                } else {
810                    // video
811                    sp<AMessage> inputFormat =
812                            mSource->getFormat(false /* audio */);
813
814                    updateVideoSize(inputFormat, format);
815                }
816            } else if (what == Decoder::kWhatShutdownCompleted) {
817                ALOGV("%s shutdown completed", audio ? "audio" : "video");
818                if (audio) {
819                    mAudioDecoder.clear();
820
821                    CHECK_EQ((int)mFlushingAudio, (int)SHUTTING_DOWN_DECODER);
822                    mFlushingAudio = SHUT_DOWN;
823                } else {
824                    mVideoDecoder.clear();
825
826                    CHECK_EQ((int)mFlushingVideo, (int)SHUTTING_DOWN_DECODER);
827                    mFlushingVideo = SHUT_DOWN;
828                }
829
830                finishFlushIfPossible();
831            } else if (what == Decoder::kWhatError) {
832                ALOGE("Received error from %s decoder, aborting playback.",
833                     audio ? "audio" : "video");
834
835                status_t err;
836                if (!msg->findInt32("err", &err)) {
837                    err = UNKNOWN_ERROR;
838                }
839                mRenderer->queueEOS(audio, err);
840                if (audio && mFlushingAudio != NONE) {
841                    mAudioDecoder.clear();
842                    mFlushingAudio = SHUT_DOWN;
843                } else if (!audio && mFlushingVideo != NONE){
844                    mVideoDecoder.clear();
845                    mFlushingVideo = SHUT_DOWN;
846                }
847                finishFlushIfPossible();
848            } else if (what == Decoder::kWhatDrainThisBuffer) {
849                renderBuffer(audio, msg);
850            } else {
851                ALOGV("Unhandled decoder notification %d '%c%c%c%c'.",
852                      what,
853                      what >> 24,
854                      (what >> 16) & 0xff,
855                      (what >> 8) & 0xff,
856                      what & 0xff);
857            }
858
859            break;
860        }
861
862        case kWhatRendererNotify:
863        {
864            int32_t what;
865            CHECK(msg->findInt32("what", &what));
866
867            if (what == Renderer::kWhatEOS) {
868                int32_t audio;
869                CHECK(msg->findInt32("audio", &audio));
870
871                int32_t finalResult;
872                CHECK(msg->findInt32("finalResult", &finalResult));
873
874                if (audio) {
875                    mAudioEOS = true;
876                } else {
877                    mVideoEOS = true;
878                }
879
880                if (finalResult == ERROR_END_OF_STREAM) {
881                    ALOGV("reached %s EOS", audio ? "audio" : "video");
882                } else {
883                    ALOGE("%s track encountered an error (%d)",
884                         audio ? "audio" : "video", finalResult);
885
886                    notifyListener(
887                            MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, finalResult);
888                }
889
890                if ((mAudioEOS || mAudioDecoder == NULL)
891                        && (mVideoEOS || mVideoDecoder == NULL)) {
892                    notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
893                }
894            } else if (what == Renderer::kWhatPosition) {
895                int64_t positionUs;
896                CHECK(msg->findInt64("positionUs", &positionUs));
897                mCurrentPositionUs = positionUs;
898
899                CHECK(msg->findInt64("videoLateByUs", &mVideoLateByUs));
900
901                if (mDriver != NULL) {
902                    sp<NuPlayerDriver> driver = mDriver.promote();
903                    if (driver != NULL) {
904                        driver->notifyPosition(positionUs);
905
906                        driver->notifyFrameStats(
907                                mNumFramesTotal, mNumFramesDropped);
908                    }
909                }
910            } else if (what == Renderer::kWhatFlushComplete) {
911                int32_t audio;
912                CHECK(msg->findInt32("audio", &audio));
913
914                ALOGV("renderer %s flush completed.", audio ? "audio" : "video");
915            } else if (what == Renderer::kWhatVideoRenderingStart) {
916                notifyListener(MEDIA_INFO, MEDIA_INFO_RENDERING_START, 0);
917            } else if (what == Renderer::kWhatMediaRenderingStart) {
918                ALOGV("media rendering started");
919                notifyListener(MEDIA_STARTED, 0, 0);
920            } else if (what == Renderer::kWhatAudioOffloadTearDown) {
921                ALOGV("Tear down audio offload, fall back to s/w path");
922                int64_t positionUs;
923                CHECK(msg->findInt64("positionUs", &positionUs));
924                closeAudioSink();
925                mAudioDecoder.clear();
926                mRenderer->flush(true /* audio */);
927                if (mVideoDecoder != NULL) {
928                    mRenderer->flush(false /* audio */);
929                }
930                mRenderer->signalDisableOffloadAudio();
931                mOffloadAudio = false;
932
933                performSeek(positionUs, false /* needNotify */);
934                instantiateDecoder(true /* audio */, &mAudioDecoder);
935            }
936            break;
937        }
938
939        case kWhatMoreDataQueued:
940        {
941            break;
942        }
943
944        case kWhatReset:
945        {
946            ALOGV("kWhatReset");
947
948            mDeferredActions.push_back(
949                    new ShutdownDecoderAction(
950                        true /* audio */, true /* video */));
951
952            mDeferredActions.push_back(
953                    new SimpleAction(&NuPlayer::performReset));
954
955            processDeferredActions();
956            break;
957        }
958
959        case kWhatSeek:
960        {
961            int64_t seekTimeUs;
962            int32_t needNotify;
963            CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
964            CHECK(msg->findInt32("needNotify", &needNotify));
965
966            ALOGV("kWhatSeek seekTimeUs=%lld us, needNotify=%d",
967                    seekTimeUs, needNotify);
968
969            mDeferredActions.push_back(
970                    new SimpleAction(&NuPlayer::performDecoderFlush));
971
972            mDeferredActions.push_back(
973                    new SeekAction(seekTimeUs, needNotify));
974
975            processDeferredActions();
976            break;
977        }
978
979        case kWhatPause:
980        {
981            CHECK(mRenderer != NULL);
982            mSource->pause();
983            mRenderer->pause();
984            break;
985        }
986
987        case kWhatResume:
988        {
989            CHECK(mRenderer != NULL);
990            mSource->resume();
991            mRenderer->resume();
992            break;
993        }
994
995        case kWhatSourceNotify:
996        {
997            onSourceNotify(msg);
998            break;
999        }
1000
1001        case kWhatClosedCaptionNotify:
1002        {
1003            onClosedCaptionNotify(msg);
1004            break;
1005        }
1006
1007        default:
1008            TRESPASS();
1009            break;
1010    }
1011}
1012
1013void NuPlayer::finishFlushIfPossible() {
1014    if (mFlushingAudio != NONE && mFlushingAudio != FLUSHED
1015            && mFlushingAudio != SHUT_DOWN) {
1016        return;
1017    }
1018
1019    if (mFlushingVideo != NONE && mFlushingVideo != FLUSHED
1020            && mFlushingVideo != SHUT_DOWN) {
1021        return;
1022    }
1023
1024    ALOGV("both audio and video are flushed now.");
1025
1026    mPendingAudioAccessUnit.clear();
1027    mAggregateBuffer.clear();
1028
1029    if (mTimeDiscontinuityPending) {
1030        mRenderer->signalTimeDiscontinuity();
1031        mTimeDiscontinuityPending = false;
1032    }
1033
1034    if (mAudioDecoder != NULL && mFlushingAudio == FLUSHED) {
1035        mAudioDecoder->signalResume();
1036    }
1037
1038    if (mVideoDecoder != NULL && mFlushingVideo == FLUSHED) {
1039        mVideoDecoder->signalResume();
1040    }
1041
1042    mFlushingAudio = NONE;
1043    mFlushingVideo = NONE;
1044
1045    processDeferredActions();
1046}
1047
1048void NuPlayer::postScanSources() {
1049    if (mScanSourcesPending) {
1050        return;
1051    }
1052
1053    sp<AMessage> msg = new AMessage(kWhatScanSources, id());
1054    msg->setInt32("generation", mScanSourcesGeneration);
1055    msg->post();
1056
1057    mScanSourcesPending = true;
1058}
1059
1060void NuPlayer::openAudioSink(const sp<AMessage> &format, bool offloadOnly) {
1061    ALOGV("openAudioSink: offloadOnly(%d) mOffloadAudio(%d)",
1062            offloadOnly, mOffloadAudio);
1063    bool audioSinkChanged = false;
1064
1065    int32_t numChannels;
1066    CHECK(format->findInt32("channel-count", &numChannels));
1067
1068    int32_t channelMask;
1069    if (!format->findInt32("channel-mask", &channelMask)) {
1070        // signal to the AudioSink to derive the mask from count.
1071        channelMask = CHANNEL_MASK_USE_CHANNEL_ORDER;
1072    }
1073
1074    int32_t sampleRate;
1075    CHECK(format->findInt32("sample-rate", &sampleRate));
1076
1077    uint32_t flags;
1078    int64_t durationUs;
1079    // FIXME: we should handle the case where the video decoder
1080    // is created after we receive the format change indication.
1081    // Current code will just make that we select deep buffer
1082    // with video which should not be a problem as it should
1083    // not prevent from keeping A/V sync.
1084    if (mVideoDecoder == NULL &&
1085            mSource->getDuration(&durationUs) == OK &&
1086            durationUs
1087                > AUDIO_SINK_MIN_DEEP_BUFFER_DURATION_US) {
1088        flags = AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
1089    } else {
1090        flags = AUDIO_OUTPUT_FLAG_NONE;
1091    }
1092
1093    if (mOffloadAudio) {
1094        audio_format_t audioFormat = AUDIO_FORMAT_PCM_16_BIT;
1095        AString mime;
1096        CHECK(format->findString("mime", &mime));
1097        status_t err = mapMimeToAudioFormat(audioFormat, mime.c_str());
1098
1099        if (err != OK) {
1100            ALOGE("Couldn't map mime \"%s\" to a valid "
1101                    "audio_format", mime.c_str());
1102            mOffloadAudio = false;
1103        } else {
1104            ALOGV("Mime \"%s\" mapped to audio_format 0x%x",
1105                    mime.c_str(), audioFormat);
1106
1107            int avgBitRate = -1;
1108            format->findInt32("bit-rate", &avgBitRate);
1109
1110            int32_t aacProfile = -1;
1111            if (audioFormat == AUDIO_FORMAT_AAC
1112                    && format->findInt32("aac-profile", &aacProfile)) {
1113                // Redefine AAC format as per aac profile
1114                mapAACProfileToAudioFormat(
1115                        audioFormat,
1116                        aacProfile);
1117            }
1118
1119            audio_offload_info_t offloadInfo = AUDIO_INFO_INITIALIZER;
1120            offloadInfo.duration_us = -1;
1121            format->findInt64(
1122                    "durationUs", &offloadInfo.duration_us);
1123            offloadInfo.sample_rate = sampleRate;
1124            offloadInfo.channel_mask = channelMask;
1125            offloadInfo.format = audioFormat;
1126            offloadInfo.stream_type = AUDIO_STREAM_MUSIC;
1127            offloadInfo.bit_rate = avgBitRate;
1128            offloadInfo.has_video = (mVideoDecoder != NULL);
1129            offloadInfo.is_streaming = true;
1130
1131            if (memcmp(&mCurrentOffloadInfo, &offloadInfo, sizeof(offloadInfo)) == 0) {
1132                ALOGV("openAudioSink: no change in offload mode");
1133                return;  // no change from previous configuration, everything ok.
1134            }
1135            ALOGV("openAudioSink: try to open AudioSink in offload mode");
1136            flags |= AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1137            flags &= ~AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
1138            audioSinkChanged = true;
1139            mAudioSink->close();
1140            err = mAudioSink->open(
1141                    sampleRate,
1142                    numChannels,
1143                    (audio_channel_mask_t)channelMask,
1144                    audioFormat,
1145                    8 /* bufferCount */,
1146                    &NuPlayer::Renderer::AudioSinkCallback,
1147                    mRenderer.get(),
1148                    (audio_output_flags_t)flags,
1149                    &offloadInfo);
1150
1151            if (err == OK) {
1152                // If the playback is offloaded to h/w, we pass
1153                // the HAL some metadata information.
1154                // We don't want to do this for PCM because it
1155                // will be going through the AudioFlinger mixer
1156                // before reaching the hardware.
1157                sp<MetaData> audioMeta =
1158                        mSource->getFormatMeta(true /* audio */);
1159                sendMetaDataToHal(mAudioSink, audioMeta);
1160                mCurrentOffloadInfo = offloadInfo;
1161                err = mAudioSink->start();
1162                ALOGV_IF(err == OK, "openAudioSink: offload succeeded");
1163            }
1164            if (err != OK) {
1165                // Clean up, fall back to non offload mode.
1166                mAudioSink->close();
1167                mRenderer->signalDisableOffloadAudio();
1168                mOffloadAudio = false;
1169                mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1170                ALOGV("openAudioSink: offload failed");
1171            }
1172        }
1173    }
1174    if (!offloadOnly && !mOffloadAudio) {
1175        flags &= ~AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1176        ALOGV("openAudioSink: open AudioSink in NON-offload mode");
1177
1178        audioSinkChanged = true;
1179        mAudioSink->close();
1180        mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1181        CHECK_EQ(mAudioSink->open(
1182                    sampleRate,
1183                    numChannels,
1184                    (audio_channel_mask_t)channelMask,
1185                    AUDIO_FORMAT_PCM_16_BIT,
1186                    8 /* bufferCount */,
1187                    NULL,
1188                    NULL,
1189                    (audio_output_flags_t)flags),
1190                 (status_t)OK);
1191        mAudioSink->start();
1192    }
1193    if (audioSinkChanged) {
1194        mRenderer->signalAudioSinkChanged();
1195    }
1196}
1197
1198void NuPlayer::closeAudioSink() {
1199    mAudioSink->close();
1200    mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1201}
1202
1203status_t NuPlayer::instantiateDecoder(bool audio, sp<Decoder> *decoder) {
1204    if (*decoder != NULL) {
1205        return OK;
1206    }
1207
1208    sp<AMessage> format = mSource->getFormat(audio);
1209
1210    if (format == NULL) {
1211        return -EWOULDBLOCK;
1212    }
1213
1214    if (!audio) {
1215        AString mime;
1216        CHECK(format->findString("mime", &mime));
1217        mVideoIsAVC = !strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime.c_str());
1218
1219        sp<AMessage> ccNotify = new AMessage(kWhatClosedCaptionNotify, id());
1220        mCCDecoder = new CCDecoder(ccNotify);
1221
1222        if (mSourceFlags & Source::FLAG_SECURE) {
1223            format->setInt32("secure", true);
1224        }
1225    }
1226
1227    if (audio) {
1228        sp<AMessage> notify = new AMessage(kWhatAudioNotify, id());
1229        ++mAudioDecoderGeneration;
1230        notify->setInt32("generation", mAudioDecoderGeneration);
1231
1232        if (mOffloadAudio) {
1233            *decoder = new DecoderPassThrough(notify);
1234        } else {
1235            *decoder = new Decoder(notify);
1236        }
1237    } else {
1238        sp<AMessage> notify = new AMessage(kWhatVideoNotify, id());
1239        ++mVideoDecoderGeneration;
1240        notify->setInt32("generation", mVideoDecoderGeneration);
1241
1242        *decoder = new Decoder(notify, mNativeWindow);
1243    }
1244    (*decoder)->init();
1245    (*decoder)->configure(format);
1246
1247    // allocate buffers to decrypt widevine source buffers
1248    if (!audio && (mSourceFlags & Source::FLAG_SECURE)) {
1249        Vector<sp<ABuffer> > inputBufs;
1250        CHECK_EQ((*decoder)->getInputBuffers(&inputBufs), (status_t)OK);
1251
1252        Vector<MediaBuffer *> mediaBufs;
1253        for (size_t i = 0; i < inputBufs.size(); i++) {
1254            const sp<ABuffer> &buffer = inputBufs[i];
1255            MediaBuffer *mbuf = new MediaBuffer(buffer->data(), buffer->size());
1256            mediaBufs.push(mbuf);
1257        }
1258
1259        status_t err = mSource->setBuffers(audio, mediaBufs);
1260        if (err != OK) {
1261            for (size_t i = 0; i < mediaBufs.size(); ++i) {
1262                mediaBufs[i]->release();
1263            }
1264            mediaBufs.clear();
1265            ALOGE("Secure source didn't support secure mediaBufs.");
1266            return err;
1267        }
1268    }
1269    return OK;
1270}
1271
1272status_t NuPlayer::feedDecoderInputData(bool audio, const sp<AMessage> &msg) {
1273    sp<AMessage> reply;
1274    CHECK(msg->findMessage("reply", &reply));
1275
1276    if ((audio && mFlushingAudio != NONE)
1277            || (!audio && mFlushingVideo != NONE)
1278            || mSource == NULL) {
1279        reply->setInt32("err", INFO_DISCONTINUITY);
1280        reply->post();
1281        return OK;
1282    }
1283
1284    sp<ABuffer> accessUnit;
1285
1286    // Aggregate smaller buffers into a larger buffer.
1287    // The goal is to reduce power consumption.
1288    // Note this will not work if the decoder requires one frame per buffer.
1289    bool doBufferAggregation = (audio && mOffloadAudio);
1290    bool needMoreData = false;
1291
1292    bool dropAccessUnit;
1293    do {
1294        status_t err;
1295        // Did we save an accessUnit earlier because of a discontinuity?
1296        if (audio && (mPendingAudioAccessUnit != NULL)) {
1297            accessUnit = mPendingAudioAccessUnit;
1298            mPendingAudioAccessUnit.clear();
1299            err = mPendingAudioErr;
1300            ALOGV("feedDecoderInputData() use mPendingAudioAccessUnit");
1301        } else {
1302            err = mSource->dequeueAccessUnit(audio, &accessUnit);
1303        }
1304
1305        if (err == -EWOULDBLOCK) {
1306            return err;
1307        } else if (err != OK) {
1308            if (err == INFO_DISCONTINUITY) {
1309                if (doBufferAggregation && (mAggregateBuffer != NULL)) {
1310                    // We already have some data so save this for later.
1311                    mPendingAudioErr = err;
1312                    mPendingAudioAccessUnit = accessUnit;
1313                    accessUnit.clear();
1314                    ALOGD("feedDecoderInputData() save discontinuity for later");
1315                    break;
1316                }
1317                int32_t type;
1318                CHECK(accessUnit->meta()->findInt32("discontinuity", &type));
1319
1320                bool formatChange =
1321                    (audio &&
1322                     (type & ATSParser::DISCONTINUITY_AUDIO_FORMAT))
1323                    || (!audio &&
1324                            (type & ATSParser::DISCONTINUITY_VIDEO_FORMAT));
1325
1326                bool timeChange = (type & ATSParser::DISCONTINUITY_TIME) != 0;
1327
1328                ALOGI("%s discontinuity (formatChange=%d, time=%d)",
1329                     audio ? "audio" : "video", formatChange, timeChange);
1330
1331                if (audio) {
1332                    mSkipRenderingAudioUntilMediaTimeUs = -1;
1333                } else {
1334                    mSkipRenderingVideoUntilMediaTimeUs = -1;
1335                }
1336
1337                if (timeChange) {
1338                    sp<AMessage> extra;
1339                    if (accessUnit->meta()->findMessage("extra", &extra)
1340                            && extra != NULL) {
1341                        int64_t resumeAtMediaTimeUs;
1342                        if (extra->findInt64(
1343                                    "resume-at-mediatimeUs", &resumeAtMediaTimeUs)) {
1344                            ALOGI("suppressing rendering of %s until %lld us",
1345                                    audio ? "audio" : "video", resumeAtMediaTimeUs);
1346
1347                            if (audio) {
1348                                mSkipRenderingAudioUntilMediaTimeUs =
1349                                    resumeAtMediaTimeUs;
1350                            } else {
1351                                mSkipRenderingVideoUntilMediaTimeUs =
1352                                    resumeAtMediaTimeUs;
1353                            }
1354                        }
1355                    }
1356                }
1357
1358                mTimeDiscontinuityPending =
1359                    mTimeDiscontinuityPending || timeChange;
1360
1361                bool seamlessFormatChange = false;
1362                sp<AMessage> newFormat = mSource->getFormat(audio);
1363                if (formatChange) {
1364                    seamlessFormatChange =
1365                        getDecoder(audio)->supportsSeamlessFormatChange(newFormat);
1366                    // treat seamless format change separately
1367                    formatChange = !seamlessFormatChange;
1368                }
1369                bool shutdownOrFlush = formatChange || timeChange;
1370
1371                // We want to queue up scan-sources only once per discontinuity.
1372                // We control this by doing it only if neither audio nor video are
1373                // flushing or shutting down.  (After handling 1st discontinuity, one
1374                // of the flushing states will not be NONE.)
1375                // No need to scan sources if this discontinuity does not result
1376                // in a flush or shutdown, as the flushing state will stay NONE.
1377                if (mFlushingAudio == NONE && mFlushingVideo == NONE &&
1378                        shutdownOrFlush) {
1379                    // And we'll resume scanning sources once we're done
1380                    // flushing.
1381                    mDeferredActions.push_front(
1382                            new SimpleAction(
1383                                &NuPlayer::performScanSources));
1384                }
1385
1386                if (formatChange /* not seamless */) {
1387                    // must change decoder
1388                    flushDecoder(audio, /* needShutdown = */ true);
1389                } else if (timeChange) {
1390                    // need to flush
1391                    flushDecoder(audio, /* needShutdown = */ false, newFormat);
1392                    err = OK;
1393                } else if (seamlessFormatChange) {
1394                    // reuse existing decoder and don't flush
1395                    updateDecoderFormatWithoutFlush(audio, newFormat);
1396                    err = OK;
1397                } else {
1398                    // This stream is unaffected by the discontinuity
1399                    return -EWOULDBLOCK;
1400                }
1401            }
1402
1403            reply->setInt32("err", err);
1404            reply->post();
1405            return OK;
1406        }
1407
1408        if (!audio) {
1409            ++mNumFramesTotal;
1410        }
1411
1412        dropAccessUnit = false;
1413        if (!audio
1414                && !(mSourceFlags & Source::FLAG_SECURE)
1415                && mVideoLateByUs > 100000ll
1416                && mVideoIsAVC
1417                && !IsAVCReferenceFrame(accessUnit)) {
1418            dropAccessUnit = true;
1419            ++mNumFramesDropped;
1420        }
1421
1422        size_t smallSize = accessUnit->size();
1423        needMoreData = false;
1424        if (doBufferAggregation && (mAggregateBuffer == NULL)
1425                // Don't bother if only room for a few small buffers.
1426                && (smallSize < (kAggregateBufferSizeBytes / 3))) {
1427            // Create a larger buffer for combining smaller buffers from the extractor.
1428            mAggregateBuffer = new ABuffer(kAggregateBufferSizeBytes);
1429            mAggregateBuffer->setRange(0, 0); // start empty
1430        }
1431
1432        if (doBufferAggregation && (mAggregateBuffer != NULL)) {
1433            int64_t timeUs;
1434            int64_t dummy;
1435            bool smallTimestampValid = accessUnit->meta()->findInt64("timeUs", &timeUs);
1436            bool bigTimestampValid = mAggregateBuffer->meta()->findInt64("timeUs", &dummy);
1437            // Will the smaller buffer fit?
1438            size_t bigSize = mAggregateBuffer->size();
1439            size_t roomLeft = mAggregateBuffer->capacity() - bigSize;
1440            // Should we save this small buffer for the next big buffer?
1441            // If the first small buffer did not have a timestamp then save
1442            // any buffer that does have a timestamp until the next big buffer.
1443            if ((smallSize > roomLeft)
1444                || (!bigTimestampValid && (bigSize > 0) && smallTimestampValid)) {
1445                mPendingAudioErr = err;
1446                mPendingAudioAccessUnit = accessUnit;
1447                accessUnit.clear();
1448            } else {
1449                // Grab time from first small buffer if available.
1450                if ((bigSize == 0) && smallTimestampValid) {
1451                    mAggregateBuffer->meta()->setInt64("timeUs", timeUs);
1452                }
1453                // Append small buffer to the bigger buffer.
1454                memcpy(mAggregateBuffer->base() + bigSize, accessUnit->data(), smallSize);
1455                bigSize += smallSize;
1456                mAggregateBuffer->setRange(0, bigSize);
1457
1458                // Keep looping until we run out of room in the mAggregateBuffer.
1459                needMoreData = true;
1460
1461                ALOGV("feedDecoderInputData() smallSize = %zu, bigSize = %zu, capacity = %zu",
1462                        smallSize, bigSize, mAggregateBuffer->capacity());
1463            }
1464        }
1465    } while (dropAccessUnit || needMoreData);
1466
1467    // ALOGV("returned a valid buffer of %s data", audio ? "audio" : "video");
1468
1469#if 0
1470    int64_t mediaTimeUs;
1471    CHECK(accessUnit->meta()->findInt64("timeUs", &mediaTimeUs));
1472    ALOGV("feeding %s input buffer at media time %.2f secs",
1473         audio ? "audio" : "video",
1474         mediaTimeUs / 1E6);
1475#endif
1476
1477    if (!audio) {
1478        mCCDecoder->decode(accessUnit);
1479    }
1480
1481    if (doBufferAggregation && (mAggregateBuffer != NULL)) {
1482        ALOGV("feedDecoderInputData() reply with aggregated buffer, %zu",
1483                mAggregateBuffer->size());
1484        reply->setBuffer("buffer", mAggregateBuffer);
1485        mAggregateBuffer.clear();
1486    } else {
1487        reply->setBuffer("buffer", accessUnit);
1488    }
1489
1490    reply->post();
1491
1492    return OK;
1493}
1494
1495void NuPlayer::renderBuffer(bool audio, const sp<AMessage> &msg) {
1496    // ALOGV("renderBuffer %s", audio ? "audio" : "video");
1497
1498    sp<AMessage> reply;
1499    CHECK(msg->findMessage("reply", &reply));
1500
1501    if ((audio && mFlushingAudio != NONE)
1502            || (!audio && mFlushingVideo != NONE)) {
1503        // We're currently attempting to flush the decoder, in order
1504        // to complete this, the decoder wants all its buffers back,
1505        // so we don't want any output buffers it sent us (from before
1506        // we initiated the flush) to be stuck in the renderer's queue.
1507
1508        ALOGV("we're still flushing the %s decoder, sending its output buffer"
1509             " right back.", audio ? "audio" : "video");
1510
1511        reply->post();
1512        return;
1513    }
1514
1515    sp<ABuffer> buffer;
1516    CHECK(msg->findBuffer("buffer", &buffer));
1517
1518    int64_t mediaTimeUs;
1519    CHECK(buffer->meta()->findInt64("timeUs", &mediaTimeUs));
1520
1521    int64_t &skipUntilMediaTimeUs =
1522        audio
1523            ? mSkipRenderingAudioUntilMediaTimeUs
1524            : mSkipRenderingVideoUntilMediaTimeUs;
1525
1526    if (skipUntilMediaTimeUs >= 0) {
1527
1528        if (mediaTimeUs < skipUntilMediaTimeUs) {
1529            ALOGV("dropping %s buffer at time %lld as requested.",
1530                 audio ? "audio" : "video",
1531                 mediaTimeUs);
1532
1533            reply->post();
1534            return;
1535        }
1536
1537        skipUntilMediaTimeUs = -1;
1538    }
1539
1540    if (!audio && mCCDecoder->isSelected()) {
1541        mCCDecoder->display(mediaTimeUs);
1542    }
1543
1544    mRenderer->queueBuffer(audio, buffer, reply);
1545}
1546
1547void NuPlayer::updateVideoSize(
1548        const sp<AMessage> &inputFormat,
1549        const sp<AMessage> &outputFormat) {
1550    if (inputFormat == NULL) {
1551        ALOGW("Unknown video size, reporting 0x0!");
1552        notifyListener(MEDIA_SET_VIDEO_SIZE, 0, 0);
1553        return;
1554    }
1555
1556    int32_t displayWidth, displayHeight;
1557    int32_t cropLeft, cropTop, cropRight, cropBottom;
1558
1559    if (outputFormat != NULL) {
1560        int32_t width, height;
1561        CHECK(outputFormat->findInt32("width", &width));
1562        CHECK(outputFormat->findInt32("height", &height));
1563
1564        int32_t cropLeft, cropTop, cropRight, cropBottom;
1565        CHECK(outputFormat->findRect(
1566                    "crop",
1567                    &cropLeft, &cropTop, &cropRight, &cropBottom));
1568
1569        displayWidth = cropRight - cropLeft + 1;
1570        displayHeight = cropBottom - cropTop + 1;
1571
1572        ALOGV("Video output format changed to %d x %d "
1573             "(crop: %d x %d @ (%d, %d))",
1574             width, height,
1575             displayWidth,
1576             displayHeight,
1577             cropLeft, cropTop);
1578    } else {
1579        CHECK(inputFormat->findInt32("width", &displayWidth));
1580        CHECK(inputFormat->findInt32("height", &displayHeight));
1581
1582        ALOGV("Video input format %d x %d", displayWidth, displayHeight);
1583    }
1584
1585    // Take into account sample aspect ratio if necessary:
1586    int32_t sarWidth, sarHeight;
1587    if (inputFormat->findInt32("sar-width", &sarWidth)
1588            && inputFormat->findInt32("sar-height", &sarHeight)) {
1589        ALOGV("Sample aspect ratio %d : %d", sarWidth, sarHeight);
1590
1591        displayWidth = (displayWidth * sarWidth) / sarHeight;
1592
1593        ALOGV("display dimensions %d x %d", displayWidth, displayHeight);
1594    }
1595
1596    int32_t rotationDegrees;
1597    if (!inputFormat->findInt32("rotation-degrees", &rotationDegrees)) {
1598        rotationDegrees = 0;
1599    }
1600
1601    if (rotationDegrees == 90 || rotationDegrees == 270) {
1602        int32_t tmp = displayWidth;
1603        displayWidth = displayHeight;
1604        displayHeight = tmp;
1605    }
1606
1607    notifyListener(
1608            MEDIA_SET_VIDEO_SIZE,
1609            displayWidth,
1610            displayHeight);
1611}
1612
1613void NuPlayer::notifyListener(int msg, int ext1, int ext2, const Parcel *in) {
1614    if (mDriver == NULL) {
1615        return;
1616    }
1617
1618    sp<NuPlayerDriver> driver = mDriver.promote();
1619
1620    if (driver == NULL) {
1621        return;
1622    }
1623
1624    driver->notifyListener(msg, ext1, ext2, in);
1625}
1626
1627void NuPlayer::flushDecoder(
1628        bool audio, bool needShutdown, const sp<AMessage> &newFormat) {
1629    ALOGV("[%s] flushDecoder needShutdown=%d",
1630          audio ? "audio" : "video", needShutdown);
1631
1632    const sp<Decoder> &decoder = getDecoder(audio);
1633    if (decoder == NULL) {
1634        ALOGI("flushDecoder %s without decoder present",
1635             audio ? "audio" : "video");
1636        return;
1637    }
1638
1639    // Make sure we don't continue to scan sources until we finish flushing.
1640    ++mScanSourcesGeneration;
1641    mScanSourcesPending = false;
1642
1643    decoder->signalFlush(newFormat);
1644    mRenderer->flush(audio);
1645
1646    FlushStatus newStatus =
1647        needShutdown ? FLUSHING_DECODER_SHUTDOWN : FLUSHING_DECODER;
1648
1649    if (audio) {
1650        ALOGE_IF(mFlushingAudio != NONE,
1651                "audio flushDecoder() is called in state %d", mFlushingAudio);
1652        mFlushingAudio = newStatus;
1653    } else {
1654        ALOGE_IF(mFlushingVideo != NONE,
1655                "video flushDecoder() is called in state %d", mFlushingVideo);
1656        mFlushingVideo = newStatus;
1657
1658        if (mCCDecoder != NULL) {
1659            mCCDecoder->flush();
1660        }
1661    }
1662}
1663
1664void NuPlayer::updateDecoderFormatWithoutFlush(
1665        bool audio, const sp<AMessage> &format) {
1666    ALOGV("[%s] updateDecoderFormatWithoutFlush", audio ? "audio" : "video");
1667
1668    const sp<Decoder> &decoder = getDecoder(audio);
1669    if (decoder == NULL) {
1670        ALOGI("updateDecoderFormatWithoutFlush %s without decoder present",
1671             audio ? "audio" : "video");
1672        return;
1673    }
1674
1675    decoder->signalUpdateFormat(format);
1676}
1677
1678void NuPlayer::queueDecoderShutdown(
1679        bool audio, bool video, const sp<AMessage> &reply) {
1680    ALOGI("queueDecoderShutdown audio=%d, video=%d", audio, video);
1681
1682    mDeferredActions.push_back(
1683            new ShutdownDecoderAction(audio, video));
1684
1685    mDeferredActions.push_back(
1686            new SimpleAction(&NuPlayer::performScanSources));
1687
1688    mDeferredActions.push_back(new PostMessageAction(reply));
1689
1690    processDeferredActions();
1691}
1692
1693status_t NuPlayer::setVideoScalingMode(int32_t mode) {
1694    mVideoScalingMode = mode;
1695    if (mNativeWindow != NULL) {
1696        status_t ret = native_window_set_scaling_mode(
1697                mNativeWindow->getNativeWindow().get(), mVideoScalingMode);
1698        if (ret != OK) {
1699            ALOGE("Failed to set scaling mode (%d): %s",
1700                -ret, strerror(-ret));
1701            return ret;
1702        }
1703    }
1704    return OK;
1705}
1706
1707status_t NuPlayer::getTrackInfo(Parcel* reply) const {
1708    sp<AMessage> msg = new AMessage(kWhatGetTrackInfo, id());
1709    msg->setPointer("reply", reply);
1710
1711    sp<AMessage> response;
1712    status_t err = msg->postAndAwaitResponse(&response);
1713    return err;
1714}
1715
1716status_t NuPlayer::getSelectedTrack(int32_t type, Parcel* reply) const {
1717    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, id());
1718    msg->setPointer("reply", reply);
1719    msg->setInt32("type", type);
1720
1721    sp<AMessage> response;
1722    status_t err = msg->postAndAwaitResponse(&response);
1723    if (err == OK && response != NULL) {
1724        CHECK(response->findInt32("err", &err));
1725    }
1726    return err;
1727}
1728
1729status_t NuPlayer::selectTrack(size_t trackIndex, bool select) {
1730    sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
1731    msg->setSize("trackIndex", trackIndex);
1732    msg->setInt32("select", select);
1733
1734    sp<AMessage> response;
1735    status_t err = msg->postAndAwaitResponse(&response);
1736
1737    if (err != OK) {
1738        return err;
1739    }
1740
1741    if (!response->findInt32("err", &err)) {
1742        err = OK;
1743    }
1744
1745    return err;
1746}
1747
1748sp<MetaData> NuPlayer::getFileMeta() {
1749    return mSource->getFileFormatMeta();
1750}
1751
1752void NuPlayer::schedulePollDuration() {
1753    sp<AMessage> msg = new AMessage(kWhatPollDuration, id());
1754    msg->setInt32("generation", mPollDurationGeneration);
1755    msg->post();
1756}
1757
1758void NuPlayer::cancelPollDuration() {
1759    ++mPollDurationGeneration;
1760}
1761
1762void NuPlayer::processDeferredActions() {
1763    while (!mDeferredActions.empty()) {
1764        // We won't execute any deferred actions until we're no longer in
1765        // an intermediate state, i.e. one more more decoders are currently
1766        // flushing or shutting down.
1767
1768        if (mFlushingAudio != NONE || mFlushingVideo != NONE) {
1769            // We're currently flushing, postpone the reset until that's
1770            // completed.
1771
1772            ALOGV("postponing action mFlushingAudio=%d, mFlushingVideo=%d",
1773                  mFlushingAudio, mFlushingVideo);
1774
1775            break;
1776        }
1777
1778        sp<Action> action = *mDeferredActions.begin();
1779        mDeferredActions.erase(mDeferredActions.begin());
1780
1781        action->execute(this);
1782    }
1783}
1784
1785void NuPlayer::performSeek(int64_t seekTimeUs, bool needNotify) {
1786    ALOGV("performSeek seekTimeUs=%lld us (%.2f secs), needNotify(%d)",
1787          seekTimeUs,
1788          seekTimeUs / 1E6,
1789          needNotify);
1790
1791    if (mSource == NULL) {
1792        // This happens when reset occurs right before the loop mode
1793        // asynchronously seeks to the start of the stream.
1794        LOG_ALWAYS_FATAL_IF(mAudioDecoder != NULL || mVideoDecoder != NULL,
1795                "mSource is NULL and decoders not NULL audio(%p) video(%p)",
1796                mAudioDecoder.get(), mVideoDecoder.get());
1797        return;
1798    }
1799    mSource->seekTo(seekTimeUs);
1800    ++mTimedTextGeneration;
1801
1802    if (mDriver != NULL) {
1803        sp<NuPlayerDriver> driver = mDriver.promote();
1804        if (driver != NULL) {
1805            driver->notifyPosition(seekTimeUs);
1806            if (needNotify) {
1807                driver->notifySeekComplete();
1808            }
1809        }
1810    }
1811
1812    // everything's flushed, continue playback.
1813}
1814
1815void NuPlayer::performDecoderFlush() {
1816    ALOGV("performDecoderFlush");
1817
1818    if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
1819        return;
1820    }
1821
1822    mTimeDiscontinuityPending = true;
1823
1824    if (mAudioDecoder != NULL) {
1825        flushDecoder(true /* audio */, false /* needShutdown */);
1826    }
1827
1828    if (mVideoDecoder != NULL) {
1829        flushDecoder(false /* audio */, false /* needShutdown */);
1830    }
1831}
1832
1833void NuPlayer::performDecoderShutdown(bool audio, bool video) {
1834    ALOGV("performDecoderShutdown audio=%d, video=%d", audio, video);
1835
1836    if ((!audio || mAudioDecoder == NULL)
1837            && (!video || mVideoDecoder == NULL)) {
1838        return;
1839    }
1840
1841    mTimeDiscontinuityPending = true;
1842
1843    if (audio && mAudioDecoder != NULL) {
1844        flushDecoder(true /* audio */, true /* needShutdown */);
1845    }
1846
1847    if (video && mVideoDecoder != NULL) {
1848        flushDecoder(false /* audio */, true /* needShutdown */);
1849    }
1850}
1851
1852void NuPlayer::performReset() {
1853    ALOGV("performReset");
1854
1855    CHECK(mAudioDecoder == NULL);
1856    CHECK(mVideoDecoder == NULL);
1857
1858    cancelPollDuration();
1859
1860    ++mScanSourcesGeneration;
1861    mScanSourcesPending = false;
1862
1863    ++mAudioDecoderGeneration;
1864    ++mVideoDecoderGeneration;
1865
1866    if (mRendererLooper != NULL) {
1867        if (mRenderer != NULL) {
1868            mRendererLooper->unregisterHandler(mRenderer->id());
1869        }
1870        mRendererLooper->stop();
1871        mRendererLooper.clear();
1872    }
1873    mRenderer.clear();
1874
1875    if (mSource != NULL) {
1876        mSource->stop();
1877
1878        mSource.clear();
1879    }
1880
1881    if (mDriver != NULL) {
1882        sp<NuPlayerDriver> driver = mDriver.promote();
1883        if (driver != NULL) {
1884            driver->notifyResetComplete();
1885        }
1886    }
1887
1888    mStarted = false;
1889}
1890
1891void NuPlayer::performScanSources() {
1892    ALOGV("performScanSources");
1893
1894    if (!mStarted) {
1895        return;
1896    }
1897
1898    if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
1899        postScanSources();
1900    }
1901}
1902
1903void NuPlayer::performSetSurface(const sp<NativeWindowWrapper> &wrapper) {
1904    ALOGV("performSetSurface");
1905
1906    mNativeWindow = wrapper;
1907
1908    // XXX - ignore error from setVideoScalingMode for now
1909    setVideoScalingMode(mVideoScalingMode);
1910
1911    if (mDriver != NULL) {
1912        sp<NuPlayerDriver> driver = mDriver.promote();
1913        if (driver != NULL) {
1914            driver->notifySetSurfaceComplete();
1915        }
1916    }
1917}
1918
1919void NuPlayer::onSourceNotify(const sp<AMessage> &msg) {
1920    int32_t what;
1921    CHECK(msg->findInt32("what", &what));
1922
1923    switch (what) {
1924        case Source::kWhatPrepared:
1925        {
1926            if (mSource == NULL) {
1927                // This is a stale notification from a source that was
1928                // asynchronously preparing when the client called reset().
1929                // We handled the reset, the source is gone.
1930                break;
1931            }
1932
1933            int32_t err;
1934            CHECK(msg->findInt32("err", &err));
1935
1936            sp<NuPlayerDriver> driver = mDriver.promote();
1937            if (driver != NULL) {
1938                // notify duration first, so that it's definitely set when
1939                // the app received the "prepare complete" callback.
1940                int64_t durationUs;
1941                if (mSource->getDuration(&durationUs) == OK) {
1942                    driver->notifyDuration(durationUs);
1943                }
1944                driver->notifyPrepareCompleted(err);
1945            }
1946
1947            break;
1948        }
1949
1950        case Source::kWhatFlagsChanged:
1951        {
1952            uint32_t flags;
1953            CHECK(msg->findInt32("flags", (int32_t *)&flags));
1954
1955            sp<NuPlayerDriver> driver = mDriver.promote();
1956            if (driver != NULL) {
1957                driver->notifyFlagsChanged(flags);
1958            }
1959
1960            if ((mSourceFlags & Source::FLAG_DYNAMIC_DURATION)
1961                    && (!(flags & Source::FLAG_DYNAMIC_DURATION))) {
1962                cancelPollDuration();
1963            } else if (!(mSourceFlags & Source::FLAG_DYNAMIC_DURATION)
1964                    && (flags & Source::FLAG_DYNAMIC_DURATION)
1965                    && (mAudioDecoder != NULL || mVideoDecoder != NULL)) {
1966                schedulePollDuration();
1967            }
1968
1969            mSourceFlags = flags;
1970            break;
1971        }
1972
1973        case Source::kWhatVideoSizeChanged:
1974        {
1975            sp<AMessage> format;
1976            CHECK(msg->findMessage("format", &format));
1977
1978            updateVideoSize(format);
1979            break;
1980        }
1981
1982        case Source::kWhatBufferingUpdate:
1983        {
1984            int32_t percentage;
1985            CHECK(msg->findInt32("percentage", &percentage));
1986
1987            notifyListener(MEDIA_BUFFERING_UPDATE, percentage, 0);
1988            break;
1989        }
1990
1991        case Source::kWhatBufferingStart:
1992        {
1993            notifyListener(MEDIA_INFO, MEDIA_INFO_BUFFERING_START, 0);
1994            break;
1995        }
1996
1997        case Source::kWhatBufferingEnd:
1998        {
1999            notifyListener(MEDIA_INFO, MEDIA_INFO_BUFFERING_END, 0);
2000            break;
2001        }
2002
2003        case Source::kWhatSubtitleData:
2004        {
2005            sp<ABuffer> buffer;
2006            CHECK(msg->findBuffer("buffer", &buffer));
2007
2008            sendSubtitleData(buffer, 0 /* baseIndex */);
2009            break;
2010        }
2011
2012        case Source::kWhatTimedTextData:
2013        {
2014            int32_t generation;
2015            if (msg->findInt32("generation", &generation)
2016                    && generation != mTimedTextGeneration) {
2017                break;
2018            }
2019
2020            sp<ABuffer> buffer;
2021            CHECK(msg->findBuffer("buffer", &buffer));
2022
2023            sp<NuPlayerDriver> driver = mDriver.promote();
2024            if (driver == NULL) {
2025                break;
2026            }
2027
2028            int posMs;
2029            int64_t timeUs, posUs;
2030            driver->getCurrentPosition(&posMs);
2031            posUs = posMs * 1000;
2032            CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
2033
2034            if (posUs < timeUs) {
2035                if (!msg->findInt32("generation", &generation)) {
2036                    msg->setInt32("generation", mTimedTextGeneration);
2037                }
2038                msg->post(timeUs - posUs);
2039            } else {
2040                sendTimedTextData(buffer);
2041            }
2042            break;
2043        }
2044
2045        case Source::kWhatQueueDecoderShutdown:
2046        {
2047            int32_t audio, video;
2048            CHECK(msg->findInt32("audio", &audio));
2049            CHECK(msg->findInt32("video", &video));
2050
2051            sp<AMessage> reply;
2052            CHECK(msg->findMessage("reply", &reply));
2053
2054            queueDecoderShutdown(audio, video, reply);
2055            break;
2056        }
2057
2058        case Source::kWhatDrmNoLicense:
2059        {
2060            notifyListener(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, ERROR_DRM_NO_LICENSE);
2061            break;
2062        }
2063
2064        default:
2065            TRESPASS();
2066    }
2067}
2068
2069void NuPlayer::onClosedCaptionNotify(const sp<AMessage> &msg) {
2070    int32_t what;
2071    CHECK(msg->findInt32("what", &what));
2072
2073    switch (what) {
2074        case NuPlayer::CCDecoder::kWhatClosedCaptionData:
2075        {
2076            sp<ABuffer> buffer;
2077            CHECK(msg->findBuffer("buffer", &buffer));
2078
2079            size_t inbandTracks = 0;
2080            if (mSource != NULL) {
2081                inbandTracks = mSource->getTrackCount();
2082            }
2083
2084            sendSubtitleData(buffer, inbandTracks);
2085            break;
2086        }
2087
2088        case NuPlayer::CCDecoder::kWhatTrackAdded:
2089        {
2090            notifyListener(MEDIA_INFO, MEDIA_INFO_METADATA_UPDATE, 0);
2091
2092            break;
2093        }
2094
2095        default:
2096            TRESPASS();
2097    }
2098
2099
2100}
2101
2102void NuPlayer::sendSubtitleData(const sp<ABuffer> &buffer, int32_t baseIndex) {
2103    int32_t trackIndex;
2104    int64_t timeUs, durationUs;
2105    CHECK(buffer->meta()->findInt32("trackIndex", &trackIndex));
2106    CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
2107    CHECK(buffer->meta()->findInt64("durationUs", &durationUs));
2108
2109    Parcel in;
2110    in.writeInt32(trackIndex + baseIndex);
2111    in.writeInt64(timeUs);
2112    in.writeInt64(durationUs);
2113    in.writeInt32(buffer->size());
2114    in.writeInt32(buffer->size());
2115    in.write(buffer->data(), buffer->size());
2116
2117    notifyListener(MEDIA_SUBTITLE_DATA, 0, 0, &in);
2118}
2119
2120void NuPlayer::sendTimedTextData(const sp<ABuffer> &buffer) {
2121    const void *data;
2122    size_t size = 0;
2123    int64_t timeUs;
2124    int32_t flag = TextDescriptions::LOCAL_DESCRIPTIONS;
2125
2126    AString mime;
2127    CHECK(buffer->meta()->findString("mime", &mime));
2128    CHECK(strcasecmp(mime.c_str(), MEDIA_MIMETYPE_TEXT_3GPP) == 0);
2129
2130    data = buffer->data();
2131    size = buffer->size();
2132
2133    Parcel parcel;
2134    if (size > 0) {
2135        CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
2136        flag |= TextDescriptions::IN_BAND_TEXT_3GPP;
2137        TextDescriptions::getParcelOfDescriptions(
2138                (const uint8_t *)data, size, flag, timeUs / 1000, &parcel);
2139    }
2140
2141    if ((parcel.dataSize() > 0)) {
2142        notifyListener(MEDIA_TIMED_TEXT, 0, 0, &parcel);
2143    } else {  // send an empty timed text
2144        notifyListener(MEDIA_TIMED_TEXT, 0, 0);
2145    }
2146}
2147////////////////////////////////////////////////////////////////////////////////
2148
2149sp<AMessage> NuPlayer::Source::getFormat(bool audio) {
2150    sp<MetaData> meta = getFormatMeta(audio);
2151
2152    if (meta == NULL) {
2153        return NULL;
2154    }
2155
2156    sp<AMessage> msg = new AMessage;
2157
2158    if(convertMetaDataToMessage(meta, &msg) == OK) {
2159        return msg;
2160    }
2161    return NULL;
2162}
2163
2164void NuPlayer::Source::notifyFlagsChanged(uint32_t flags) {
2165    sp<AMessage> notify = dupNotify();
2166    notify->setInt32("what", kWhatFlagsChanged);
2167    notify->setInt32("flags", flags);
2168    notify->post();
2169}
2170
2171void NuPlayer::Source::notifyVideoSizeChanged(const sp<AMessage> &format) {
2172    sp<AMessage> notify = dupNotify();
2173    notify->setInt32("what", kWhatVideoSizeChanged);
2174    notify->setMessage("format", format);
2175    notify->post();
2176}
2177
2178void NuPlayer::Source::notifyPrepared(status_t err) {
2179    sp<AMessage> notify = dupNotify();
2180    notify->setInt32("what", kWhatPrepared);
2181    notify->setInt32("err", err);
2182    notify->post();
2183}
2184
2185void NuPlayer::Source::onMessageReceived(const sp<AMessage> & /* msg */) {
2186    TRESPASS();
2187}
2188
2189}  // namespace android
2190