NuPlayer.cpp revision 2adbeda4f46f88ddb17519d39cc13e183741e071 
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
53struct NuPlayer::Action : public RefBase {
54    Action() {}
55
56    virtual void execute(NuPlayer *player) = 0;
57
58private:
59    DISALLOW_EVIL_CONSTRUCTORS(Action);
60};
61
62struct NuPlayer::SeekAction : public Action {
63    SeekAction(int64_t seekTimeUs)
64        : mSeekTimeUs(seekTimeUs) {
65    }
66
67    virtual void execute(NuPlayer *player) {
68        player->performSeek(mSeekTimeUs);
69    }
70
71private:
72    int64_t mSeekTimeUs;
73
74    DISALLOW_EVIL_CONSTRUCTORS(SeekAction);
75};
76
77struct NuPlayer::SetSurfaceAction : public Action {
78    SetSurfaceAction(const sp<NativeWindowWrapper> &wrapper)
79        : mWrapper(wrapper) {
80    }
81
82    virtual void execute(NuPlayer *player) {
83        player->performSetSurface(mWrapper);
84    }
85
86private:
87    sp<NativeWindowWrapper> mWrapper;
88
89    DISALLOW_EVIL_CONSTRUCTORS(SetSurfaceAction);
90};
91
92struct NuPlayer::ShutdownDecoderAction : public Action {
93    ShutdownDecoderAction(bool audio, bool video)
94        : mAudio(audio),
95          mVideo(video) {
96    }
97
98    virtual void execute(NuPlayer *player) {
99        player->performDecoderShutdown(mAudio, mVideo);
100    }
101
102private:
103    bool mAudio;
104    bool mVideo;
105
106    DISALLOW_EVIL_CONSTRUCTORS(ShutdownDecoderAction);
107};
108
109struct NuPlayer::PostMessageAction : public Action {
110    PostMessageAction(const sp<AMessage> &msg)
111        : mMessage(msg) {
112    }
113
114    virtual void execute(NuPlayer *) {
115        mMessage->post();
116    }
117
118private:
119    sp<AMessage> mMessage;
120
121    DISALLOW_EVIL_CONSTRUCTORS(PostMessageAction);
122};
123
124// Use this if there's no state necessary to save in order to execute
125// the action.
126struct NuPlayer::SimpleAction : public Action {
127    typedef void (NuPlayer::*ActionFunc)();
128
129    SimpleAction(ActionFunc func)
130        : mFunc(func) {
131    }
132
133    virtual void execute(NuPlayer *player) {
134        (player->*mFunc)();
135    }
136
137private:
138    ActionFunc mFunc;
139
140    DISALLOW_EVIL_CONSTRUCTORS(SimpleAction);
141};
142
143////////////////////////////////////////////////////////////////////////////////
144
145NuPlayer::NuPlayer()
146    : mUIDValid(false),
147      mSourceFlags(0),
148      mCurrentPositionUs(0),
149      mVideoIsAVC(false),
150      mOffloadAudio(false),
151      mCurrentOffloadInfo(AUDIO_INFO_INITIALIZER),
152      mAudioDecoderGeneration(0),
153      mVideoDecoderGeneration(0),
154      mAudioEOS(false),
155      mVideoEOS(false),
156      mScanSourcesPending(false),
157      mScanSourcesGeneration(0),
158      mPollDurationGeneration(0),
159      mTimedTextGeneration(0),
160      mTimeDiscontinuityPending(false),
161      mFlushingAudio(NONE),
162      mFlushingVideo(NONE),
163      mSkipRenderingAudioUntilMediaTimeUs(-1ll),
164      mSkipRenderingVideoUntilMediaTimeUs(-1ll),
165      mVideoLateByUs(0ll),
166      mNumFramesTotal(0ll),
167      mNumFramesDropped(0ll),
168      mVideoScalingMode(NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW),
169      mStarted(false) {
170}
171
172NuPlayer::~NuPlayer() {
173}
174
175void NuPlayer::setUID(uid_t uid) {
176    mUIDValid = true;
177    mUID = uid;
178}
179
180void NuPlayer::setDriver(const wp<NuPlayerDriver> &driver) {
181    mDriver = driver;
182}
183
184void NuPlayer::setDataSourceAsync(const sp<IStreamSource> &source) {
185    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
186
187    sp<AMessage> notify = new AMessage(kWhatSourceNotify, id());
188
189    msg->setObject("source", new StreamingSource(notify, source));
190    msg->post();
191}
192
193static bool IsHTTPLiveURL(const char *url) {
194    if (!strncasecmp("http://", url, 7)
195            || !strncasecmp("https://", url, 8)
196            || !strncasecmp("file://", url, 7)) {
197        size_t len = strlen(url);
198        if (len >= 5 && !strcasecmp(".m3u8", &url[len - 5])) {
199            return true;
200        }
201
202        if (strstr(url,"m3u8")) {
203            return true;
204        }
205    }
206
207    return false;
208}
209
210void NuPlayer::setDataSourceAsync(
211        const sp<IMediaHTTPService> &httpService,
212        const char *url,
213        const KeyedVector<String8, String8> *headers) {
214
215    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
216    size_t len = strlen(url);
217
218    sp<AMessage> notify = new AMessage(kWhatSourceNotify, id());
219
220    sp<Source> source;
221    if (IsHTTPLiveURL(url)) {
222        source = new HTTPLiveSource(notify, httpService, url, headers);
223    } else if (!strncasecmp(url, "rtsp://", 7)) {
224        source = new RTSPSource(
225                notify, httpService, url, headers, mUIDValid, mUID);
226    } else if ((!strncasecmp(url, "http://", 7)
227                || !strncasecmp(url, "https://", 8))
228                    && ((len >= 4 && !strcasecmp(".sdp", &url[len - 4]))
229                    || strstr(url, ".sdp?"))) {
230        source = new RTSPSource(
231                notify, httpService, url, headers, mUIDValid, mUID, true);
232    } else {
233        sp<GenericSource> genericSource =
234                new GenericSource(notify, mUIDValid, mUID);
235        // Don't set FLAG_SECURE on mSourceFlags here for widevine.
236        // The correct flags will be updated in Source::kWhatFlagsChanged
237        // handler when  GenericSource is prepared.
238
239        status_t err = genericSource->setDataSource(httpService, url, headers);
240
241        if (err == OK) {
242            source = genericSource;
243        } else {
244            ALOGE("Failed to set data source!");
245        }
246    }
247    msg->setObject("source", source);
248    msg->post();
249}
250
251void NuPlayer::setDataSourceAsync(int fd, int64_t offset, int64_t length) {
252    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
253
254    sp<AMessage> notify = new AMessage(kWhatSourceNotify, id());
255
256    sp<GenericSource> source =
257            new GenericSource(notify, mUIDValid, mUID);
258
259    status_t err = source->setDataSource(fd, offset, length);
260
261    if (err != OK) {
262        ALOGE("Failed to set data source!");
263        source = NULL;
264    }
265
266    msg->setObject("source", source);
267    msg->post();
268}
269
270void NuPlayer::prepareAsync() {
271    (new AMessage(kWhatPrepare, id()))->post();
272}
273
274void NuPlayer::setVideoSurfaceTextureAsync(
275        const sp<IGraphicBufferProducer> &bufferProducer) {
276    sp<AMessage> msg = new AMessage(kWhatSetVideoNativeWindow, id());
277
278    if (bufferProducer == NULL) {
279        msg->setObject("native-window", NULL);
280    } else {
281        msg->setObject(
282                "native-window",
283                new NativeWindowWrapper(
284                    new Surface(bufferProducer, true /* controlledByApp */)));
285    }
286
287    msg->post();
288}
289
290void NuPlayer::setAudioSink(const sp<MediaPlayerBase::AudioSink> &sink) {
291    sp<AMessage> msg = new AMessage(kWhatSetAudioSink, id());
292    msg->setObject("sink", sink);
293    msg->post();
294}
295
296void NuPlayer::start() {
297    (new AMessage(kWhatStart, id()))->post();
298}
299
300void NuPlayer::pause() {
301    (new AMessage(kWhatPause, id()))->post();
302}
303
304void NuPlayer::resume() {
305    (new AMessage(kWhatResume, id()))->post();
306}
307
308void NuPlayer::resetAsync() {
309    (new AMessage(kWhatReset, id()))->post();
310}
311
312void NuPlayer::seekToAsync(int64_t seekTimeUs) {
313    sp<AMessage> msg = new AMessage(kWhatSeek, id());
314    msg->setInt64("seekTimeUs", seekTimeUs);
315    msg->post();
316}
317
318// static
319bool NuPlayer::IsFlushingState(FlushStatus state, bool *needShutdown) {
320    switch (state) {
321        case FLUSHING_DECODER:
322            if (needShutdown != NULL) {
323                *needShutdown = false;
324            }
325            return true;
326
327        case FLUSHING_DECODER_SHUTDOWN:
328            if (needShutdown != NULL) {
329                *needShutdown = true;
330            }
331            return true;
332
333        default:
334            return false;
335    }
336}
337
338void NuPlayer::writeTrackInfo(
339        Parcel* reply, const sp<AMessage> format) const {
340    int32_t trackType;
341    CHECK(format->findInt32("type", &trackType));
342
343    AString lang;
344    CHECK(format->findString("language", &lang));
345
346    reply->writeInt32(2); // write something non-zero
347    reply->writeInt32(trackType);
348    reply->writeString16(String16(lang.c_str()));
349
350    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
351        AString mime;
352        CHECK(format->findString("mime", &mime));
353
354        int32_t isAuto, isDefault, isForced;
355        CHECK(format->findInt32("auto", &isAuto));
356        CHECK(format->findInt32("default", &isDefault));
357        CHECK(format->findInt32("forced", &isForced));
358
359        reply->writeString16(String16(mime.c_str()));
360        reply->writeInt32(isAuto);
361        reply->writeInt32(isDefault);
362        reply->writeInt32(isForced);
363    }
364}
365
366void NuPlayer::onMessageReceived(const sp<AMessage> &msg) {
367    switch (msg->what()) {
368        case kWhatSetDataSource:
369        {
370            ALOGV("kWhatSetDataSource");
371
372            CHECK(mSource == NULL);
373
374            status_t err = OK;
375            sp<RefBase> obj;
376            CHECK(msg->findObject("source", &obj));
377            if (obj != NULL) {
378                mSource = static_cast<Source *>(obj.get());
379            } else {
380                err = UNKNOWN_ERROR;
381            }
382
383            CHECK(mDriver != NULL);
384            sp<NuPlayerDriver> driver = mDriver.promote();
385            if (driver != NULL) {
386                driver->notifySetDataSourceCompleted(err);
387            }
388            break;
389        }
390
391        case kWhatPrepare:
392        {
393            mSource->prepareAsync();
394            break;
395        }
396
397        case kWhatGetTrackInfo:
398        {
399            uint32_t replyID;
400            CHECK(msg->senderAwaitsResponse(&replyID));
401
402            Parcel* reply;
403            CHECK(msg->findPointer("reply", (void**)&reply));
404
405            size_t inbandTracks = 0;
406            if (mSource != NULL) {
407                inbandTracks = mSource->getTrackCount();
408            }
409
410            size_t ccTracks = 0;
411            if (mCCDecoder != NULL) {
412                ccTracks = mCCDecoder->getTrackCount();
413            }
414
415            // total track count
416            reply->writeInt32(inbandTracks + ccTracks);
417
418            // write inband tracks
419            for (size_t i = 0; i < inbandTracks; ++i) {
420                writeTrackInfo(reply, mSource->getTrackInfo(i));
421            }
422
423            // write CC track
424            for (size_t i = 0; i < ccTracks; ++i) {
425                writeTrackInfo(reply, mCCDecoder->getTrackInfo(i));
426            }
427
428            sp<AMessage> response = new AMessage;
429            response->postReply(replyID);
430            break;
431        }
432
433        case kWhatGetSelectedTrack:
434        {
435            status_t err = INVALID_OPERATION;
436            if (mSource != NULL) {
437                err = OK;
438
439                int32_t type32;
440                CHECK(msg->findInt32("type", (int32_t*)&type32));
441                media_track_type type = (media_track_type)type32;
442                ssize_t selectedTrack = mSource->getSelectedTrack(type);
443
444                Parcel* reply;
445                CHECK(msg->findPointer("reply", (void**)&reply));
446                reply->writeInt32(selectedTrack);
447            }
448
449            sp<AMessage> response = new AMessage;
450            response->setInt32("err", err);
451
452            uint32_t replyID;
453            CHECK(msg->senderAwaitsResponse(&replyID));
454            response->postReply(replyID);
455            break;
456        }
457
458        case kWhatSelectTrack:
459        {
460            uint32_t replyID;
461            CHECK(msg->senderAwaitsResponse(&replyID));
462
463            size_t trackIndex;
464            int32_t select;
465            CHECK(msg->findSize("trackIndex", &trackIndex));
466            CHECK(msg->findInt32("select", &select));
467
468            status_t err = INVALID_OPERATION;
469
470            size_t inbandTracks = 0;
471            if (mSource != NULL) {
472                inbandTracks = mSource->getTrackCount();
473            }
474            size_t ccTracks = 0;
475            if (mCCDecoder != NULL) {
476                ccTracks = mCCDecoder->getTrackCount();
477            }
478
479            if (trackIndex < inbandTracks) {
480                err = mSource->selectTrack(trackIndex, select);
481
482                if (!select && err == OK) {
483                    int32_t type;
484                    sp<AMessage> info = mSource->getTrackInfo(trackIndex);
485                    if (info != NULL
486                            && info->findInt32("type", &type)
487                            && type == MEDIA_TRACK_TYPE_TIMEDTEXT) {
488                        ++mTimedTextGeneration;
489                    }
490                }
491            } else {
492                trackIndex -= inbandTracks;
493
494                if (trackIndex < ccTracks) {
495                    err = mCCDecoder->selectTrack(trackIndex, select);
496                }
497            }
498
499            sp<AMessage> response = new AMessage;
500            response->setInt32("err", err);
501
502            response->postReply(replyID);
503            break;
504        }
505
506        case kWhatPollDuration:
507        {
508            int32_t generation;
509            CHECK(msg->findInt32("generation", &generation));
510
511            if (generation != mPollDurationGeneration) {
512                // stale
513                break;
514            }
515
516            int64_t durationUs;
517            if (mDriver != NULL && mSource->getDuration(&durationUs) == OK) {
518                sp<NuPlayerDriver> driver = mDriver.promote();
519                if (driver != NULL) {
520                    driver->notifyDuration(durationUs);
521                }
522            }
523
524            msg->post(1000000ll);  // poll again in a second.
525            break;
526        }
527
528        case kWhatSetVideoNativeWindow:
529        {
530            ALOGV("kWhatSetVideoNativeWindow");
531
532            mDeferredActions.push_back(
533                    new ShutdownDecoderAction(
534                        false /* audio */, true /* video */));
535
536            sp<RefBase> obj;
537            CHECK(msg->findObject("native-window", &obj));
538
539            mDeferredActions.push_back(
540                    new SetSurfaceAction(
541                        static_cast<NativeWindowWrapper *>(obj.get())));
542
543            if (obj != NULL) {
544                if (mStarted && mVideoDecoder != NULL) {
545                    // Issue a seek to refresh the video screen only if started otherwise
546                    // the extractor may not yet be started and will assert.
547                    // If the video decoder is not set (perhaps audio only in this case)
548                    // do not perform a seek as it is not needed.
549                    mDeferredActions.push_back(new SeekAction(mCurrentPositionUs));
550                }
551
552                // If there is a new surface texture, instantiate decoders
553                // again if possible.
554                mDeferredActions.push_back(
555                        new SimpleAction(&NuPlayer::performScanSources));
556            }
557
558            processDeferredActions();
559            break;
560        }
561
562        case kWhatSetAudioSink:
563        {
564            ALOGV("kWhatSetAudioSink");
565
566            sp<RefBase> obj;
567            CHECK(msg->findObject("sink", &obj));
568
569            mAudioSink = static_cast<MediaPlayerBase::AudioSink *>(obj.get());
570            break;
571        }
572
573        case kWhatStart:
574        {
575            ALOGV("kWhatStart");
576
577            mVideoIsAVC = false;
578            mOffloadAudio = false;
579            mAudioEOS = false;
580            mVideoEOS = false;
581            mSkipRenderingAudioUntilMediaTimeUs = -1;
582            mSkipRenderingVideoUntilMediaTimeUs = -1;
583            mVideoLateByUs = 0;
584            mNumFramesTotal = 0;
585            mNumFramesDropped = 0;
586            mStarted = true;
587
588            /* instantiate decoders now for secure playback */
589            if (mSourceFlags & Source::FLAG_SECURE) {
590                if (mNativeWindow != NULL) {
591                    instantiateDecoder(false, &mVideoDecoder);
592                }
593
594                if (mAudioSink != NULL) {
595                    instantiateDecoder(true, &mAudioDecoder);
596                }
597            }
598
599            mSource->start();
600
601            uint32_t flags = 0;
602
603            if (mSource->isRealTime()) {
604                flags |= Renderer::FLAG_REAL_TIME;
605            }
606
607            sp<MetaData> audioMeta = mSource->getFormatMeta(true /* audio */);
608            audio_stream_type_t streamType = AUDIO_STREAM_MUSIC;
609            if (mAudioSink != NULL) {
610                streamType = mAudioSink->getAudioStreamType();
611            }
612
613            sp<AMessage> videoFormat = mSource->getFormat(false /* audio */);
614
615            mOffloadAudio =
616                canOffloadStream(audioMeta, (videoFormat != NULL),
617                                 true /* is_streaming */, streamType);
618            if (mOffloadAudio) {
619                flags |= Renderer::FLAG_OFFLOAD_AUDIO;
620            }
621
622            mRenderer = new Renderer(
623                    mAudioSink,
624                    new AMessage(kWhatRendererNotify, id()),
625                    flags);
626
627            mRendererLooper = new ALooper;
628            mRendererLooper->setName("NuPlayerRenderer");
629            mRendererLooper->start(false, false, ANDROID_PRIORITY_AUDIO);
630            mRendererLooper->registerHandler(mRenderer);
631
632            postScanSources();
633            break;
634        }
635
636        case kWhatScanSources:
637        {
638            int32_t generation;
639            CHECK(msg->findInt32("generation", &generation));
640            if (generation != mScanSourcesGeneration) {
641                // Drop obsolete msg.
642                break;
643            }
644
645            mScanSourcesPending = false;
646
647            ALOGV("scanning sources haveAudio=%d, haveVideo=%d",
648                 mAudioDecoder != NULL, mVideoDecoder != NULL);
649
650            bool mHadAnySourcesBefore =
651                (mAudioDecoder != NULL) || (mVideoDecoder != NULL);
652
653            // initialize video before audio because successful initialization of
654            // video may change deep buffer mode of audio.
655            if (mNativeWindow != NULL) {
656                instantiateDecoder(false, &mVideoDecoder);
657            }
658
659            if (mAudioSink != NULL) {
660                if (mOffloadAudio) {
661                    // open audio sink early under offload mode.
662                    sp<AMessage> format = mSource->getFormat(true /*audio*/);
663                    openAudioSink(format, true /*offloadOnly*/);
664                }
665                instantiateDecoder(true, &mAudioDecoder);
666            }
667
668            if (!mHadAnySourcesBefore
669                    && (mAudioDecoder != NULL || mVideoDecoder != NULL)) {
670                // This is the first time we've found anything playable.
671
672                if (mSourceFlags & Source::FLAG_DYNAMIC_DURATION) {
673                    schedulePollDuration();
674                }
675            }
676
677            status_t err;
678            if ((err = mSource->feedMoreTSData()) != OK) {
679                if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
680                    // We're not currently decoding anything (no audio or
681                    // video tracks found) and we just ran out of input data.
682
683                    if (err == ERROR_END_OF_STREAM) {
684                        notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
685                    } else {
686                        notifyListener(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, err);
687                    }
688                }
689                break;
690            }
691
692            if ((mAudioDecoder == NULL && mAudioSink != NULL)
693                    || (mVideoDecoder == NULL && mNativeWindow != NULL)) {
694                msg->post(100000ll);
695                mScanSourcesPending = true;
696            }
697            break;
698        }
699
700        case kWhatVideoNotify:
701        case kWhatAudioNotify:
702        {
703            bool audio = msg->what() == kWhatAudioNotify;
704
705            int32_t currentDecoderGeneration =
706                (audio? mAudioDecoderGeneration : mVideoDecoderGeneration);
707            int32_t requesterGeneration = currentDecoderGeneration - 1;
708            CHECK(msg->findInt32("generation", &requesterGeneration));
709
710            if (requesterGeneration != currentDecoderGeneration) {
711                ALOGV("got message from old %s decoder, generation(%d:%d)",
712                        audio ? "audio" : "video", requesterGeneration,
713                        currentDecoderGeneration);
714                sp<AMessage> reply;
715                if (!(msg->findMessage("reply", &reply))) {
716                    return;
717                }
718
719                reply->setInt32("err", INFO_DISCONTINUITY);
720                reply->post();
721                return;
722            }
723
724            int32_t what;
725            CHECK(msg->findInt32("what", &what));
726
727            if (what == Decoder::kWhatFillThisBuffer) {
728                status_t err = feedDecoderInputData(
729                        audio, msg);
730
731                if (err == -EWOULDBLOCK) {
732                    if (mSource->feedMoreTSData() == OK) {
733                        msg->post(10000ll);
734                    }
735                }
736            } else if (what == Decoder::kWhatEOS) {
737                int32_t err;
738                CHECK(msg->findInt32("err", &err));
739
740                if (err == ERROR_END_OF_STREAM) {
741                    ALOGV("got %s decoder EOS", audio ? "audio" : "video");
742                } else {
743                    ALOGV("got %s decoder EOS w/ error %d",
744                         audio ? "audio" : "video",
745                         err);
746                }
747
748                mRenderer->queueEOS(audio, err);
749            } else if (what == Decoder::kWhatFlushCompleted) {
750                bool needShutdown;
751
752                if (audio) {
753                    CHECK(IsFlushingState(mFlushingAudio, &needShutdown));
754                    mFlushingAudio = FLUSHED;
755                } else {
756                    CHECK(IsFlushingState(mFlushingVideo, &needShutdown));
757                    mFlushingVideo = FLUSHED;
758
759                    mVideoLateByUs = 0;
760                }
761
762                ALOGV("decoder %s flush completed", audio ? "audio" : "video");
763
764                if (needShutdown) {
765                    ALOGV("initiating %s decoder shutdown",
766                         audio ? "audio" : "video");
767
768                    getDecoder(audio)->initiateShutdown();
769
770                    if (audio) {
771                        mFlushingAudio = SHUTTING_DOWN_DECODER;
772                    } else {
773                        mFlushingVideo = SHUTTING_DOWN_DECODER;
774                    }
775                }
776
777                finishFlushIfPossible();
778            } else if (what == Decoder::kWhatOutputFormatChanged) {
779                sp<AMessage> format;
780                CHECK(msg->findMessage("format", &format));
781
782                if (audio) {
783                    openAudioSink(format, false /*offloadOnly*/);
784                } else {
785                    // video
786                    sp<AMessage> inputFormat =
787                            mSource->getFormat(false /* audio */);
788
789                    updateVideoSize(inputFormat, format);
790                }
791            } else if (what == Decoder::kWhatShutdownCompleted) {
792                ALOGV("%s shutdown completed", audio ? "audio" : "video");
793                if (audio) {
794                    mAudioDecoder.clear();
795
796                    CHECK_EQ((int)mFlushingAudio, (int)SHUTTING_DOWN_DECODER);
797                    mFlushingAudio = SHUT_DOWN;
798                } else {
799                    mVideoDecoder.clear();
800
801                    CHECK_EQ((int)mFlushingVideo, (int)SHUTTING_DOWN_DECODER);
802                    mFlushingVideo = SHUT_DOWN;
803                }
804
805                finishFlushIfPossible();
806            } else if (what == Decoder::kWhatError) {
807                ALOGE("Received error from %s decoder, aborting playback.",
808                     audio ? "audio" : "video");
809
810                status_t err;
811                if (!msg->findInt32("err", &err)) {
812                    err = UNKNOWN_ERROR;
813                }
814                mRenderer->queueEOS(audio, err);
815                if (audio && mFlushingAudio != NONE) {
816                    mAudioDecoder.clear();
817                    mFlushingAudio = SHUT_DOWN;
818                } else if (!audio && mFlushingVideo != NONE){
819                    mVideoDecoder.clear();
820                    mFlushingVideo = SHUT_DOWN;
821                }
822                finishFlushIfPossible();
823            } else if (what == Decoder::kWhatDrainThisBuffer) {
824                renderBuffer(audio, msg);
825            } else {
826                ALOGV("Unhandled decoder notification %d '%c%c%c%c'.",
827                      what,
828                      what >> 24,
829                      (what >> 16) & 0xff,
830                      (what >> 8) & 0xff,
831                      what & 0xff);
832            }
833
834            break;
835        }
836
837        case kWhatRendererNotify:
838        {
839            int32_t what;
840            CHECK(msg->findInt32("what", &what));
841
842            if (what == Renderer::kWhatEOS) {
843                int32_t audio;
844                CHECK(msg->findInt32("audio", &audio));
845
846                int32_t finalResult;
847                CHECK(msg->findInt32("finalResult", &finalResult));
848
849                if (audio) {
850                    mAudioEOS = true;
851                } else {
852                    mVideoEOS = true;
853                }
854
855                if (finalResult == ERROR_END_OF_STREAM) {
856                    ALOGV("reached %s EOS", audio ? "audio" : "video");
857                } else {
858                    ALOGE("%s track encountered an error (%d)",
859                         audio ? "audio" : "video", finalResult);
860
861                    notifyListener(
862                            MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, finalResult);
863                }
864
865                if ((mAudioEOS || mAudioDecoder == NULL)
866                        && (mVideoEOS || mVideoDecoder == NULL)) {
867                    notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
868                }
869            } else if (what == Renderer::kWhatPosition) {
870                int64_t positionUs;
871                CHECK(msg->findInt64("positionUs", &positionUs));
872                mCurrentPositionUs = positionUs;
873
874                CHECK(msg->findInt64("videoLateByUs", &mVideoLateByUs));
875
876                if (mDriver != NULL) {
877                    sp<NuPlayerDriver> driver = mDriver.promote();
878                    if (driver != NULL) {
879                        driver->notifyPosition(positionUs);
880
881                        driver->notifyFrameStats(
882                                mNumFramesTotal, mNumFramesDropped);
883                    }
884                }
885            } else if (what == Renderer::kWhatFlushComplete) {
886                int32_t audio;
887                CHECK(msg->findInt32("audio", &audio));
888
889                ALOGV("renderer %s flush completed.", audio ? "audio" : "video");
890            } else if (what == Renderer::kWhatVideoRenderingStart) {
891                notifyListener(MEDIA_INFO, MEDIA_INFO_RENDERING_START, 0);
892            } else if (what == Renderer::kWhatMediaRenderingStart) {
893                ALOGV("media rendering started");
894                notifyListener(MEDIA_STARTED, 0, 0);
895            } else if (what == Renderer::kWhatAudioOffloadTearDown) {
896                ALOGV("Tear down audio offload, fall back to s/w path");
897                int64_t positionUs;
898                CHECK(msg->findInt64("positionUs", &positionUs));
899                closeAudioSink();
900                mAudioDecoder.clear();
901                mRenderer->flush(true /* audio */);
902                if (mVideoDecoder != NULL) {
903                    mRenderer->flush(false /* audio */);
904                }
905                mRenderer->signalDisableOffloadAudio();
906                mOffloadAudio = false;
907
908                performSeek(positionUs);
909                instantiateDecoder(true /* audio */, &mAudioDecoder);
910            }
911            break;
912        }
913
914        case kWhatMoreDataQueued:
915        {
916            break;
917        }
918
919        case kWhatReset:
920        {
921            ALOGV("kWhatReset");
922
923            mDeferredActions.push_back(
924                    new ShutdownDecoderAction(
925                        true /* audio */, true /* video */));
926
927            mDeferredActions.push_back(
928                    new SimpleAction(&NuPlayer::performReset));
929
930            processDeferredActions();
931            break;
932        }
933
934        case kWhatSeek:
935        {
936            int64_t seekTimeUs;
937            CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
938
939            ALOGV("kWhatSeek seekTimeUs=%lld us", seekTimeUs);
940
941            mDeferredActions.push_back(
942                    new SimpleAction(&NuPlayer::performDecoderFlush));
943
944            mDeferredActions.push_back(new SeekAction(seekTimeUs));
945
946            processDeferredActions();
947            break;
948        }
949
950        case kWhatPause:
951        {
952            CHECK(mRenderer != NULL);
953            mSource->pause();
954            mRenderer->pause();
955            break;
956        }
957
958        case kWhatResume:
959        {
960            CHECK(mRenderer != NULL);
961            mSource->resume();
962            mRenderer->resume();
963            break;
964        }
965
966        case kWhatSourceNotify:
967        {
968            onSourceNotify(msg);
969            break;
970        }
971
972        case kWhatClosedCaptionNotify:
973        {
974            onClosedCaptionNotify(msg);
975            break;
976        }
977
978        default:
979            TRESPASS();
980            break;
981    }
982}
983
984void NuPlayer::finishFlushIfPossible() {
985    if (mFlushingAudio != NONE && mFlushingAudio != FLUSHED
986            && mFlushingAudio != SHUT_DOWN) {
987        return;
988    }
989
990    if (mFlushingVideo != NONE && mFlushingVideo != FLUSHED
991            && mFlushingVideo != SHUT_DOWN) {
992        return;
993    }
994
995    ALOGV("both audio and video are flushed now.");
996
997    mPendingAudioAccessUnit.clear();
998
999    if (mTimeDiscontinuityPending) {
1000        mRenderer->signalTimeDiscontinuity();
1001        mTimeDiscontinuityPending = false;
1002    }
1003
1004    if (mAudioDecoder != NULL && mFlushingAudio == FLUSHED) {
1005        mAudioDecoder->signalResume();
1006    }
1007
1008    if (mVideoDecoder != NULL && mFlushingVideo == FLUSHED) {
1009        mVideoDecoder->signalResume();
1010    }
1011
1012    mFlushingAudio = NONE;
1013    mFlushingVideo = NONE;
1014
1015    processDeferredActions();
1016}
1017
1018void NuPlayer::postScanSources() {
1019    if (mScanSourcesPending) {
1020        return;
1021    }
1022
1023    sp<AMessage> msg = new AMessage(kWhatScanSources, id());
1024    msg->setInt32("generation", mScanSourcesGeneration);
1025    msg->post();
1026
1027    mScanSourcesPending = true;
1028}
1029
1030void NuPlayer::openAudioSink(const sp<AMessage> &format, bool offloadOnly) {
1031    ALOGV("openAudioSink: offloadOnly(%d) mOffloadAudio(%d)",
1032            offloadOnly, mOffloadAudio);
1033    bool audioSinkChanged = false;
1034
1035    int32_t numChannels;
1036    CHECK(format->findInt32("channel-count", &numChannels));
1037
1038    int32_t channelMask;
1039    if (!format->findInt32("channel-mask", &channelMask)) {
1040        // signal to the AudioSink to derive the mask from count.
1041        channelMask = CHANNEL_MASK_USE_CHANNEL_ORDER;
1042    }
1043
1044    int32_t sampleRate;
1045    CHECK(format->findInt32("sample-rate", &sampleRate));
1046
1047    uint32_t flags;
1048    int64_t durationUs;
1049    // FIXME: we should handle the case where the video decoder
1050    // is created after we receive the format change indication.
1051    // Current code will just make that we select deep buffer
1052    // with video which should not be a problem as it should
1053    // not prevent from keeping A/V sync.
1054    if (mVideoDecoder == NULL &&
1055            mSource->getDuration(&durationUs) == OK &&
1056            durationUs
1057                > AUDIO_SINK_MIN_DEEP_BUFFER_DURATION_US) {
1058        flags = AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
1059    } else {
1060        flags = AUDIO_OUTPUT_FLAG_NONE;
1061    }
1062
1063    if (mOffloadAudio) {
1064        audio_format_t audioFormat = AUDIO_FORMAT_PCM_16_BIT;
1065        AString mime;
1066        CHECK(format->findString("mime", &mime));
1067        status_t err = mapMimeToAudioFormat(audioFormat, mime.c_str());
1068
1069        if (err != OK) {
1070            ALOGE("Couldn't map mime \"%s\" to a valid "
1071                    "audio_format", mime.c_str());
1072            mOffloadAudio = false;
1073        } else {
1074            ALOGV("Mime \"%s\" mapped to audio_format 0x%x",
1075                    mime.c_str(), audioFormat);
1076
1077            int avgBitRate = -1;
1078            format->findInt32("bit-rate", &avgBitRate);
1079
1080            int32_t aacProfile = -1;
1081            if (audioFormat == AUDIO_FORMAT_AAC
1082                    && format->findInt32("aac-profile", &aacProfile)) {
1083                // Redefine AAC format as per aac profile
1084                mapAACProfileToAudioFormat(
1085                        audioFormat,
1086                        aacProfile);
1087            }
1088
1089            audio_offload_info_t offloadInfo = AUDIO_INFO_INITIALIZER;
1090            offloadInfo.duration_us = -1;
1091            format->findInt64(
1092                    "durationUs", &offloadInfo.duration_us);
1093            offloadInfo.sample_rate = sampleRate;
1094            offloadInfo.channel_mask = channelMask;
1095            offloadInfo.format = audioFormat;
1096            offloadInfo.stream_type = AUDIO_STREAM_MUSIC;
1097            offloadInfo.bit_rate = avgBitRate;
1098            offloadInfo.has_video = (mVideoDecoder != NULL);
1099            offloadInfo.is_streaming = true;
1100
1101            if (memcmp(&mCurrentOffloadInfo, &offloadInfo, sizeof(offloadInfo)) == 0) {
1102                ALOGV("openAudioSink: no change in offload mode");
1103                return;  // no change from previous configuration, everything ok.
1104            }
1105            ALOGV("openAudioSink: try to open AudioSink in offload mode");
1106            flags |= AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1107            flags &= ~AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
1108            audioSinkChanged = true;
1109            mAudioSink->close();
1110            err = mAudioSink->open(
1111                    sampleRate,
1112                    numChannels,
1113                    (audio_channel_mask_t)channelMask,
1114                    audioFormat,
1115                    8 /* bufferCount */,
1116                    &NuPlayer::Renderer::AudioSinkCallback,
1117                    mRenderer.get(),
1118                    (audio_output_flags_t)flags,
1119                    &offloadInfo);
1120
1121            if (err == OK) {
1122                // If the playback is offloaded to h/w, we pass
1123                // the HAL some metadata information.
1124                // We don't want to do this for PCM because it
1125                // will be going through the AudioFlinger mixer
1126                // before reaching the hardware.
1127                sp<MetaData> audioMeta =
1128                        mSource->getFormatMeta(true /* audio */);
1129                sendMetaDataToHal(mAudioSink, audioMeta);
1130                mCurrentOffloadInfo = offloadInfo;
1131                err = mAudioSink->start();
1132                ALOGV_IF(err == OK, "openAudioSink: offload succeeded");
1133            }
1134            if (err != OK) {
1135                // Clean up, fall back to non offload mode.
1136                mAudioSink->close();
1137                mRenderer->signalDisableOffloadAudio();
1138                mOffloadAudio = false;
1139                mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1140                ALOGV("openAudioSink: offload failed");
1141            }
1142        }
1143    }
1144    if (!offloadOnly && !mOffloadAudio) {
1145        flags &= ~AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1146        ALOGV("openAudioSink: open AudioSink in NON-offload mode");
1147
1148        audioSinkChanged = true;
1149        mAudioSink->close();
1150        mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1151        CHECK_EQ(mAudioSink->open(
1152                    sampleRate,
1153                    numChannels,
1154                    (audio_channel_mask_t)channelMask,
1155                    AUDIO_FORMAT_PCM_16_BIT,
1156                    8 /* bufferCount */,
1157                    NULL,
1158                    NULL,
1159                    (audio_output_flags_t)flags),
1160                 (status_t)OK);
1161        mAudioSink->start();
1162    }
1163    if (audioSinkChanged) {
1164        mRenderer->signalAudioSinkChanged();
1165    }
1166}
1167
1168void NuPlayer::closeAudioSink() {
1169    mAudioSink->close();
1170    mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1171}
1172
1173status_t NuPlayer::instantiateDecoder(bool audio, sp<Decoder> *decoder) {
1174    if (*decoder != NULL) {
1175        return OK;
1176    }
1177
1178    sp<AMessage> format = mSource->getFormat(audio);
1179
1180    if (format == NULL) {
1181        return -EWOULDBLOCK;
1182    }
1183
1184    if (!audio) {
1185        AString mime;
1186        CHECK(format->findString("mime", &mime));
1187        mVideoIsAVC = !strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime.c_str());
1188
1189        sp<AMessage> ccNotify = new AMessage(kWhatClosedCaptionNotify, id());
1190        mCCDecoder = new CCDecoder(ccNotify);
1191
1192        if (mSourceFlags & Source::FLAG_SECURE) {
1193            format->setInt32("secure", true);
1194        }
1195    }
1196
1197    if (audio) {
1198        sp<AMessage> notify = new AMessage(kWhatAudioNotify, id());
1199        ++mAudioDecoderGeneration;
1200        notify->setInt32("generation", mAudioDecoderGeneration);
1201
1202        if (mOffloadAudio) {
1203            *decoder = new DecoderPassThrough(notify);
1204        } else {
1205            *decoder = new Decoder(notify);
1206        }
1207    } else {
1208        sp<AMessage> notify = new AMessage(kWhatVideoNotify, id());
1209        ++mVideoDecoderGeneration;
1210        notify->setInt32("generation", mVideoDecoderGeneration);
1211
1212        *decoder = new Decoder(notify, mNativeWindow);
1213    }
1214    (*decoder)->init();
1215    (*decoder)->configure(format);
1216
1217    // allocate buffers to decrypt widevine source buffers
1218    if (!audio && (mSourceFlags & Source::FLAG_SECURE)) {
1219        Vector<sp<ABuffer> > inputBufs;
1220        CHECK_EQ((*decoder)->getInputBuffers(&inputBufs), (status_t)OK);
1221
1222        Vector<MediaBuffer *> mediaBufs;
1223        for (size_t i = 0; i < inputBufs.size(); i++) {
1224            const sp<ABuffer> &buffer = inputBufs[i];
1225            MediaBuffer *mbuf = new MediaBuffer(buffer->data(), buffer->size());
1226            mediaBufs.push(mbuf);
1227        }
1228
1229        status_t err = mSource->setBuffers(audio, mediaBufs);
1230        if (err != OK) {
1231            for (size_t i = 0; i < mediaBufs.size(); ++i) {
1232                mediaBufs[i]->release();
1233            }
1234            mediaBufs.clear();
1235            ALOGE("Secure source didn't support secure mediaBufs.");
1236            return err;
1237        }
1238    }
1239    return OK;
1240}
1241
1242status_t NuPlayer::feedDecoderInputData(bool audio, const sp<AMessage> &msg) {
1243    sp<AMessage> reply;
1244    CHECK(msg->findMessage("reply", &reply));
1245
1246    if ((audio && mFlushingAudio != NONE)
1247            || (!audio && mFlushingVideo != NONE)
1248            || mSource == NULL) {
1249        reply->setInt32("err", INFO_DISCONTINUITY);
1250        reply->post();
1251        return OK;
1252    }
1253
1254    sp<ABuffer> accessUnit;
1255
1256    // Aggregate smaller buffers into a larger buffer.
1257    // The goal is to reduce power consumption.
1258    // Unfortunately this does not work with the software AAC decoder.
1259    // TODO optimize buffer size for power consumption
1260    // The offload read buffer size is 32 KB but 24 KB uses less power.
1261    const int kAudioBigBufferSizeBytes = 24 * 1024;
1262    bool doBufferAggregation = (audio && mOffloadAudio);
1263    sp<ABuffer> biggerBuffer;
1264    bool needMoreData = false;
1265    int numSmallBuffers = 0;
1266    bool gotTime = false;
1267
1268    bool dropAccessUnit;
1269    do {
1270        status_t err;
1271        // Did we save an accessUnit earlier because of a discontinuity?
1272        if (audio && (mPendingAudioAccessUnit != NULL)) {
1273            accessUnit = mPendingAudioAccessUnit;
1274            mPendingAudioAccessUnit.clear();
1275            err = mPendingAudioErr;
1276            ALOGV("feedDecoderInputData() use mPendingAudioAccessUnit");
1277        } else {
1278            err = mSource->dequeueAccessUnit(audio, &accessUnit);
1279        }
1280
1281        if (err == -EWOULDBLOCK) {
1282            ALOGD("feedDecoderInputData() got EWOULDBLOCK");
1283            if (biggerBuffer == NULL) {
1284                return err;
1285            } else {
1286                break; // Reply with data that we already have.
1287            }
1288        } else if (err != OK) {
1289            if (err == INFO_DISCONTINUITY) {
1290                if (biggerBuffer != NULL) {
1291                    // We already have some data so save this for later.
1292                    mPendingAudioErr = err;
1293                    mPendingAudioAccessUnit = accessUnit;
1294                    accessUnit.clear();
1295                    ALOGD("feedDecoderInputData() save discontinuity for later");
1296                    break;
1297                }
1298                int32_t type;
1299                CHECK(accessUnit->meta()->findInt32("discontinuity", &type));
1300
1301                bool formatChange =
1302                    (audio &&
1303                     (type & ATSParser::DISCONTINUITY_AUDIO_FORMAT))
1304                    || (!audio &&
1305                            (type & ATSParser::DISCONTINUITY_VIDEO_FORMAT));
1306
1307                bool timeChange = (type & ATSParser::DISCONTINUITY_TIME) != 0;
1308
1309                ALOGI("%s discontinuity (formatChange=%d, time=%d)",
1310                     audio ? "audio" : "video", formatChange, timeChange);
1311
1312                if (audio) {
1313                    mSkipRenderingAudioUntilMediaTimeUs = -1;
1314                } else {
1315                    mSkipRenderingVideoUntilMediaTimeUs = -1;
1316                }
1317
1318                if (timeChange) {
1319                    sp<AMessage> extra;
1320                    if (accessUnit->meta()->findMessage("extra", &extra)
1321                            && extra != NULL) {
1322                        int64_t resumeAtMediaTimeUs;
1323                        if (extra->findInt64(
1324                                    "resume-at-mediatimeUs", &resumeAtMediaTimeUs)) {
1325                            ALOGI("suppressing rendering of %s until %lld us",
1326                                    audio ? "audio" : "video", resumeAtMediaTimeUs);
1327
1328                            if (audio) {
1329                                mSkipRenderingAudioUntilMediaTimeUs =
1330                                    resumeAtMediaTimeUs;
1331                            } else {
1332                                mSkipRenderingVideoUntilMediaTimeUs =
1333                                    resumeAtMediaTimeUs;
1334                            }
1335                        }
1336                    }
1337                }
1338
1339                mTimeDiscontinuityPending =
1340                    mTimeDiscontinuityPending || timeChange;
1341
1342                bool seamlessFormatChange = false;
1343                sp<AMessage> newFormat = mSource->getFormat(audio);
1344                if (formatChange) {
1345                    seamlessFormatChange =
1346                        getDecoder(audio)->supportsSeamlessFormatChange(newFormat);
1347                    // treat seamless format change separately
1348                    formatChange = !seamlessFormatChange;
1349                }
1350                bool shutdownOrFlush = formatChange || timeChange;
1351
1352                // We want to queue up scan-sources only once per discontinuity.
1353                // We control this by doing it only if neither audio nor video are
1354                // flushing or shutting down.  (After handling 1st discontinuity, one
1355                // of the flushing states will not be NONE.)
1356                // No need to scan sources if this discontinuity does not result
1357                // in a flush or shutdown, as the flushing state will stay NONE.
1358                if (mFlushingAudio == NONE && mFlushingVideo == NONE &&
1359                        shutdownOrFlush) {
1360                    // And we'll resume scanning sources once we're done
1361                    // flushing.
1362                    mDeferredActions.push_front(
1363                            new SimpleAction(
1364                                &NuPlayer::performScanSources));
1365                }
1366
1367                if (formatChange /* not seamless */) {
1368                    // must change decoder
1369                    flushDecoder(audio, /* needShutdown = */ true);
1370                } else if (timeChange) {
1371                    // need to flush
1372                    flushDecoder(audio, /* needShutdown = */ false, newFormat);
1373                    err = OK;
1374                } else if (seamlessFormatChange) {
1375                    // reuse existing decoder and don't flush
1376                    updateDecoderFormatWithoutFlush(audio, newFormat);
1377                    err = OK;
1378                } else {
1379                    // This stream is unaffected by the discontinuity
1380                    return -EWOULDBLOCK;
1381                }
1382            }
1383
1384            reply->setInt32("err", err);
1385            reply->post();
1386            return OK;
1387        }
1388
1389        if (!audio) {
1390            ++mNumFramesTotal;
1391        }
1392
1393        dropAccessUnit = false;
1394        if (!audio
1395                && !(mSourceFlags & Source::FLAG_SECURE)
1396                && mVideoLateByUs > 100000ll
1397                && mVideoIsAVC
1398                && !IsAVCReferenceFrame(accessUnit)) {
1399            dropAccessUnit = true;
1400            ++mNumFramesDropped;
1401        }
1402
1403        size_t smallSize = accessUnit->size();
1404        needMoreData = false;
1405        if (doBufferAggregation && (biggerBuffer == NULL)
1406                // Don't bother if only room for a few small buffers.
1407                && (smallSize < (kAudioBigBufferSizeBytes / 3))) {
1408            // Create a larger buffer for combining smaller buffers from the extractor.
1409            biggerBuffer = new ABuffer(kAudioBigBufferSizeBytes);
1410            biggerBuffer->setRange(0, 0); // start empty
1411        }
1412
1413        if (biggerBuffer != NULL) {
1414            int64_t timeUs;
1415            bool smallTimestampValid = accessUnit->meta()->findInt64("timeUs", &timeUs);
1416            // Will the smaller buffer fit?
1417            size_t bigSize = biggerBuffer->size();
1418            size_t roomLeft = biggerBuffer->capacity() - bigSize;
1419            // Should we save this small buffer for the next big buffer?
1420            // If the first small buffer did not have a timestamp then save
1421            // any buffer that does have a timestamp until the next big buffer.
1422            if ((smallSize > roomLeft)
1423                || (!gotTime && (numSmallBuffers > 0) && smallTimestampValid)) {
1424                mPendingAudioErr = err;
1425                mPendingAudioAccessUnit = accessUnit;
1426                accessUnit.clear();
1427            } else {
1428                // Append small buffer to the bigger buffer.
1429                memcpy(biggerBuffer->base() + bigSize, accessUnit->data(), smallSize);
1430                bigSize += smallSize;
1431                biggerBuffer->setRange(0, bigSize);
1432
1433                // Keep looping until we run out of room in the biggerBuffer.
1434                needMoreData = true;
1435
1436                // Grab time from first small buffer if available.
1437                if ((numSmallBuffers == 0) && smallTimestampValid) {
1438                    biggerBuffer->meta()->setInt64("timeUs", timeUs);
1439                    gotTime = true;
1440                }
1441
1442                ALOGV("feedDecoderInputData() #%d, smallSize = %zu, bigSize = %zu, capacity = %zu",
1443                        numSmallBuffers, smallSize, bigSize, biggerBuffer->capacity());
1444                numSmallBuffers++;
1445            }
1446        }
1447    } while (dropAccessUnit || needMoreData);
1448
1449    // ALOGV("returned a valid buffer of %s data", audio ? "audio" : "video");
1450
1451#if 0
1452    int64_t mediaTimeUs;
1453    CHECK(accessUnit->meta()->findInt64("timeUs", &mediaTimeUs));
1454    ALOGV("feeding %s input buffer at media time %.2f secs",
1455         audio ? "audio" : "video",
1456         mediaTimeUs / 1E6);
1457#endif
1458
1459    if (!audio) {
1460        mCCDecoder->decode(accessUnit);
1461    }
1462
1463    if (biggerBuffer != NULL) {
1464        ALOGV("feedDecoderInputData() reply with aggregated buffer, %d", numSmallBuffers);
1465        reply->setBuffer("buffer", biggerBuffer);
1466    } else {
1467        reply->setBuffer("buffer", accessUnit);
1468    }
1469
1470    reply->post();
1471
1472    return OK;
1473}
1474
1475void NuPlayer::renderBuffer(bool audio, const sp<AMessage> &msg) {
1476    // ALOGV("renderBuffer %s", audio ? "audio" : "video");
1477
1478    sp<AMessage> reply;
1479    CHECK(msg->findMessage("reply", &reply));
1480
1481    if ((audio && mFlushingAudio != NONE)
1482            || (!audio && mFlushingVideo != NONE)) {
1483        // We're currently attempting to flush the decoder, in order
1484        // to complete this, the decoder wants all its buffers back,
1485        // so we don't want any output buffers it sent us (from before
1486        // we initiated the flush) to be stuck in the renderer's queue.
1487
1488        ALOGV("we're still flushing the %s decoder, sending its output buffer"
1489             " right back.", audio ? "audio" : "video");
1490
1491        reply->post();
1492        return;
1493    }
1494
1495    sp<ABuffer> buffer;
1496    CHECK(msg->findBuffer("buffer", &buffer));
1497
1498    int64_t mediaTimeUs;
1499    CHECK(buffer->meta()->findInt64("timeUs", &mediaTimeUs));
1500
1501    int64_t &skipUntilMediaTimeUs =
1502        audio
1503            ? mSkipRenderingAudioUntilMediaTimeUs
1504            : mSkipRenderingVideoUntilMediaTimeUs;
1505
1506    if (skipUntilMediaTimeUs >= 0) {
1507
1508        if (mediaTimeUs < skipUntilMediaTimeUs) {
1509            ALOGV("dropping %s buffer at time %lld as requested.",
1510                 audio ? "audio" : "video",
1511                 mediaTimeUs);
1512
1513            reply->post();
1514            return;
1515        }
1516
1517        skipUntilMediaTimeUs = -1;
1518    }
1519
1520    if (!audio && mCCDecoder->isSelected()) {
1521        mCCDecoder->display(mediaTimeUs);
1522    }
1523
1524    mRenderer->queueBuffer(audio, buffer, reply);
1525}
1526
1527void NuPlayer::updateVideoSize(
1528        const sp<AMessage> &inputFormat,
1529        const sp<AMessage> &outputFormat) {
1530    if (inputFormat == NULL) {
1531        ALOGW("Unknown video size, reporting 0x0!");
1532        notifyListener(MEDIA_SET_VIDEO_SIZE, 0, 0);
1533        return;
1534    }
1535
1536    int32_t displayWidth, displayHeight;
1537    int32_t cropLeft, cropTop, cropRight, cropBottom;
1538
1539    if (outputFormat != NULL) {
1540        int32_t width, height;
1541        CHECK(outputFormat->findInt32("width", &width));
1542        CHECK(outputFormat->findInt32("height", &height));
1543
1544        int32_t cropLeft, cropTop, cropRight, cropBottom;
1545        CHECK(outputFormat->findRect(
1546                    "crop",
1547                    &cropLeft, &cropTop, &cropRight, &cropBottom));
1548
1549        displayWidth = cropRight - cropLeft + 1;
1550        displayHeight = cropBottom - cropTop + 1;
1551
1552        ALOGV("Video output format changed to %d x %d "
1553             "(crop: %d x %d @ (%d, %d))",
1554             width, height,
1555             displayWidth,
1556             displayHeight,
1557             cropLeft, cropTop);
1558    } else {
1559        CHECK(inputFormat->findInt32("width", &displayWidth));
1560        CHECK(inputFormat->findInt32("height", &displayHeight));
1561
1562        ALOGV("Video input format %d x %d", displayWidth, displayHeight);
1563    }
1564
1565    // Take into account sample aspect ratio if necessary:
1566    int32_t sarWidth, sarHeight;
1567    if (inputFormat->findInt32("sar-width", &sarWidth)
1568            && inputFormat->findInt32("sar-height", &sarHeight)) {
1569        ALOGV("Sample aspect ratio %d : %d", sarWidth, sarHeight);
1570
1571        displayWidth = (displayWidth * sarWidth) / sarHeight;
1572
1573        ALOGV("display dimensions %d x %d", displayWidth, displayHeight);
1574    }
1575
1576    int32_t rotationDegrees;
1577    if (!inputFormat->findInt32("rotation-degrees", &rotationDegrees)) {
1578        rotationDegrees = 0;
1579    }
1580
1581    if (rotationDegrees == 90 || rotationDegrees == 270) {
1582        int32_t tmp = displayWidth;
1583        displayWidth = displayHeight;
1584        displayHeight = tmp;
1585    }
1586
1587    notifyListener(
1588            MEDIA_SET_VIDEO_SIZE,
1589            displayWidth,
1590            displayHeight);
1591}
1592
1593void NuPlayer::notifyListener(int msg, int ext1, int ext2, const Parcel *in) {
1594    if (mDriver == NULL) {
1595        return;
1596    }
1597
1598    sp<NuPlayerDriver> driver = mDriver.promote();
1599
1600    if (driver == NULL) {
1601        return;
1602    }
1603
1604    driver->notifyListener(msg, ext1, ext2, in);
1605}
1606
1607void NuPlayer::flushDecoder(
1608        bool audio, bool needShutdown, const sp<AMessage> &newFormat) {
1609    ALOGV("[%s] flushDecoder needShutdown=%d",
1610          audio ? "audio" : "video", needShutdown);
1611
1612    const sp<Decoder> &decoder = getDecoder(audio);
1613    if (decoder == NULL) {
1614        ALOGI("flushDecoder %s without decoder present",
1615             audio ? "audio" : "video");
1616        return;
1617    }
1618
1619    // Make sure we don't continue to scan sources until we finish flushing.
1620    ++mScanSourcesGeneration;
1621    mScanSourcesPending = false;
1622
1623    decoder->signalFlush(newFormat);
1624    mRenderer->flush(audio);
1625
1626    FlushStatus newStatus =
1627        needShutdown ? FLUSHING_DECODER_SHUTDOWN : FLUSHING_DECODER;
1628
1629    if (audio) {
1630        ALOGE_IF(mFlushingAudio != NONE,
1631                "audio flushDecoder() is called in state %d", mFlushingAudio);
1632        mFlushingAudio = newStatus;
1633    } else {
1634        ALOGE_IF(mFlushingVideo != NONE,
1635                "video flushDecoder() is called in state %d", mFlushingVideo);
1636        mFlushingVideo = newStatus;
1637
1638        if (mCCDecoder != NULL) {
1639            mCCDecoder->flush();
1640        }
1641    }
1642}
1643
1644void NuPlayer::updateDecoderFormatWithoutFlush(
1645        bool audio, const sp<AMessage> &format) {
1646    ALOGV("[%s] updateDecoderFormatWithoutFlush", audio ? "audio" : "video");
1647
1648    const sp<Decoder> &decoder = getDecoder(audio);
1649    if (decoder == NULL) {
1650        ALOGI("updateDecoderFormatWithoutFlush %s without decoder present",
1651             audio ? "audio" : "video");
1652        return;
1653    }
1654
1655    decoder->signalUpdateFormat(format);
1656}
1657
1658void NuPlayer::queueDecoderShutdown(
1659        bool audio, bool video, const sp<AMessage> &reply) {
1660    ALOGI("queueDecoderShutdown audio=%d, video=%d", audio, video);
1661
1662    mDeferredActions.push_back(
1663            new ShutdownDecoderAction(audio, video));
1664
1665    mDeferredActions.push_back(
1666            new SimpleAction(&NuPlayer::performScanSources));
1667
1668    mDeferredActions.push_back(new PostMessageAction(reply));
1669
1670    processDeferredActions();
1671}
1672
1673status_t NuPlayer::setVideoScalingMode(int32_t mode) {
1674    mVideoScalingMode = mode;
1675    if (mNativeWindow != NULL) {
1676        status_t ret = native_window_set_scaling_mode(
1677                mNativeWindow->getNativeWindow().get(), mVideoScalingMode);
1678        if (ret != OK) {
1679            ALOGE("Failed to set scaling mode (%d): %s",
1680                -ret, strerror(-ret));
1681            return ret;
1682        }
1683    }
1684    return OK;
1685}
1686
1687status_t NuPlayer::getTrackInfo(Parcel* reply) const {
1688    sp<AMessage> msg = new AMessage(kWhatGetTrackInfo, id());
1689    msg->setPointer("reply", reply);
1690
1691    sp<AMessage> response;
1692    status_t err = msg->postAndAwaitResponse(&response);
1693    return err;
1694}
1695
1696status_t NuPlayer::getSelectedTrack(int32_t type, Parcel* reply) const {
1697    sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, id());
1698    msg->setPointer("reply", reply);
1699    msg->setInt32("type", type);
1700
1701    sp<AMessage> response;
1702    status_t err = msg->postAndAwaitResponse(&response);
1703    if (err == OK && response != NULL) {
1704        CHECK(response->findInt32("err", &err));
1705    }
1706    return err;
1707}
1708
1709status_t NuPlayer::selectTrack(size_t trackIndex, bool select) {
1710    sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
1711    msg->setSize("trackIndex", trackIndex);
1712    msg->setInt32("select", select);
1713
1714    sp<AMessage> response;
1715    status_t err = msg->postAndAwaitResponse(&response);
1716
1717    if (err != OK) {
1718        return err;
1719    }
1720
1721    if (!response->findInt32("err", &err)) {
1722        err = OK;
1723    }
1724
1725    return err;
1726}
1727
1728void NuPlayer::schedulePollDuration() {
1729    sp<AMessage> msg = new AMessage(kWhatPollDuration, id());
1730    msg->setInt32("generation", mPollDurationGeneration);
1731    msg->post();
1732}
1733
1734void NuPlayer::cancelPollDuration() {
1735    ++mPollDurationGeneration;
1736}
1737
1738void NuPlayer::processDeferredActions() {
1739    while (!mDeferredActions.empty()) {
1740        // We won't execute any deferred actions until we're no longer in
1741        // an intermediate state, i.e. one more more decoders are currently
1742        // flushing or shutting down.
1743
1744        if (mFlushingAudio != NONE || mFlushingVideo != NONE) {
1745            // We're currently flushing, postpone the reset until that's
1746            // completed.
1747
1748            ALOGV("postponing action mFlushingAudio=%d, mFlushingVideo=%d",
1749                  mFlushingAudio, mFlushingVideo);
1750
1751            break;
1752        }
1753
1754        sp<Action> action = *mDeferredActions.begin();
1755        mDeferredActions.erase(mDeferredActions.begin());
1756
1757        action->execute(this);
1758    }
1759}
1760
1761void NuPlayer::performSeek(int64_t seekTimeUs) {
1762    ALOGV("performSeek seekTimeUs=%lld us (%.2f secs)",
1763          seekTimeUs,
1764          seekTimeUs / 1E6);
1765
1766    if (mSource == NULL) {
1767        // This happens when reset occurs right before the loop mode
1768        // asynchronously seeks to the start of the stream.
1769        LOG_ALWAYS_FATAL_IF(mAudioDecoder != NULL || mVideoDecoder != NULL,
1770                "mSource is NULL and decoders not NULL audio(%p) video(%p)",
1771                mAudioDecoder.get(), mVideoDecoder.get());
1772        return;
1773    }
1774    mSource->seekTo(seekTimeUs);
1775    ++mTimedTextGeneration;
1776
1777    if (mDriver != NULL) {
1778        sp<NuPlayerDriver> driver = mDriver.promote();
1779        if (driver != NULL) {
1780            driver->notifyPosition(seekTimeUs);
1781            driver->notifySeekComplete();
1782        }
1783    }
1784
1785    // everything's flushed, continue playback.
1786}
1787
1788void NuPlayer::performDecoderFlush() {
1789    ALOGV("performDecoderFlush");
1790
1791    if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
1792        return;
1793    }
1794
1795    mTimeDiscontinuityPending = true;
1796
1797    if (mAudioDecoder != NULL) {
1798        flushDecoder(true /* audio */, false /* needShutdown */);
1799    }
1800
1801    if (mVideoDecoder != NULL) {
1802        flushDecoder(false /* audio */, false /* needShutdown */);
1803    }
1804}
1805
1806void NuPlayer::performDecoderShutdown(bool audio, bool video) {
1807    ALOGV("performDecoderShutdown audio=%d, video=%d", audio, video);
1808
1809    if ((!audio || mAudioDecoder == NULL)
1810            && (!video || mVideoDecoder == NULL)) {
1811        return;
1812    }
1813
1814    mTimeDiscontinuityPending = true;
1815
1816    if (audio && mAudioDecoder != NULL) {
1817        flushDecoder(true /* audio */, true /* needShutdown */);
1818    }
1819
1820    if (video && mVideoDecoder != NULL) {
1821        flushDecoder(false /* audio */, true /* needShutdown */);
1822    }
1823}
1824
1825void NuPlayer::performReset() {
1826    ALOGV("performReset");
1827
1828    CHECK(mAudioDecoder == NULL);
1829    CHECK(mVideoDecoder == NULL);
1830
1831    cancelPollDuration();
1832
1833    ++mScanSourcesGeneration;
1834    mScanSourcesPending = false;
1835
1836    if (mRendererLooper != NULL) {
1837        if (mRenderer != NULL) {
1838            mRendererLooper->unregisterHandler(mRenderer->id());
1839        }
1840        mRendererLooper->stop();
1841        mRendererLooper.clear();
1842    }
1843    mRenderer.clear();
1844
1845    if (mSource != NULL) {
1846        mSource->stop();
1847
1848        mSource.clear();
1849    }
1850
1851    if (mDriver != NULL) {
1852        sp<NuPlayerDriver> driver = mDriver.promote();
1853        if (driver != NULL) {
1854            driver->notifyResetComplete();
1855        }
1856    }
1857
1858    mStarted = false;
1859}
1860
1861void NuPlayer::performScanSources() {
1862    ALOGV("performScanSources");
1863
1864    if (!mStarted) {
1865        return;
1866    }
1867
1868    if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
1869        postScanSources();
1870    }
1871}
1872
1873void NuPlayer::performSetSurface(const sp<NativeWindowWrapper> &wrapper) {
1874    ALOGV("performSetSurface");
1875
1876    mNativeWindow = wrapper;
1877
1878    // XXX - ignore error from setVideoScalingMode for now
1879    setVideoScalingMode(mVideoScalingMode);
1880
1881    if (mDriver != NULL) {
1882        sp<NuPlayerDriver> driver = mDriver.promote();
1883        if (driver != NULL) {
1884            driver->notifySetSurfaceComplete();
1885        }
1886    }
1887}
1888
1889void NuPlayer::onSourceNotify(const sp<AMessage> &msg) {
1890    int32_t what;
1891    CHECK(msg->findInt32("what", &what));
1892
1893    switch (what) {
1894        case Source::kWhatPrepared:
1895        {
1896            if (mSource == NULL) {
1897                // This is a stale notification from a source that was
1898                // asynchronously preparing when the client called reset().
1899                // We handled the reset, the source is gone.
1900                break;
1901            }
1902
1903            int32_t err;
1904            CHECK(msg->findInt32("err", &err));
1905
1906            sp<NuPlayerDriver> driver = mDriver.promote();
1907            if (driver != NULL) {
1908                // notify duration first, so that it's definitely set when
1909                // the app received the "prepare complete" callback.
1910                int64_t durationUs;
1911                if (mSource->getDuration(&durationUs) == OK) {
1912                    driver->notifyDuration(durationUs);
1913                }
1914                driver->notifyPrepareCompleted(err);
1915            }
1916
1917            break;
1918        }
1919
1920        case Source::kWhatFlagsChanged:
1921        {
1922            uint32_t flags;
1923            CHECK(msg->findInt32("flags", (int32_t *)&flags));
1924
1925            sp<NuPlayerDriver> driver = mDriver.promote();
1926            if (driver != NULL) {
1927                driver->notifyFlagsChanged(flags);
1928            }
1929
1930            if ((mSourceFlags & Source::FLAG_DYNAMIC_DURATION)
1931                    && (!(flags & Source::FLAG_DYNAMIC_DURATION))) {
1932                cancelPollDuration();
1933            } else if (!(mSourceFlags & Source::FLAG_DYNAMIC_DURATION)
1934                    && (flags & Source::FLAG_DYNAMIC_DURATION)
1935                    && (mAudioDecoder != NULL || mVideoDecoder != NULL)) {
1936                schedulePollDuration();
1937            }
1938
1939            mSourceFlags = flags;
1940            break;
1941        }
1942
1943        case Source::kWhatVideoSizeChanged:
1944        {
1945            sp<AMessage> format;
1946            CHECK(msg->findMessage("format", &format));
1947
1948            updateVideoSize(format);
1949            break;
1950        }
1951
1952        case Source::kWhatBufferingUpdate:
1953        {
1954            int32_t percentage;
1955            CHECK(msg->findInt32("percentage", &percentage));
1956
1957            notifyListener(MEDIA_BUFFERING_UPDATE, percentage, 0);
1958            break;
1959        }
1960
1961        case Source::kWhatBufferingStart:
1962        {
1963            notifyListener(MEDIA_INFO, MEDIA_INFO_BUFFERING_START, 0);
1964            break;
1965        }
1966
1967        case Source::kWhatBufferingEnd:
1968        {
1969            notifyListener(MEDIA_INFO, MEDIA_INFO_BUFFERING_END, 0);
1970            break;
1971        }
1972
1973        case Source::kWhatSubtitleData:
1974        {
1975            sp<ABuffer> buffer;
1976            CHECK(msg->findBuffer("buffer", &buffer));
1977
1978            sendSubtitleData(buffer, 0 /* baseIndex */);
1979            break;
1980        }
1981
1982        case Source::kWhatTimedTextData:
1983        {
1984            int32_t generation;
1985            if (msg->findInt32("generation", &generation)
1986                    && generation != mTimedTextGeneration) {
1987                break;
1988            }
1989
1990            sp<ABuffer> buffer;
1991            CHECK(msg->findBuffer("buffer", &buffer));
1992
1993            sp<NuPlayerDriver> driver = mDriver.promote();
1994            if (driver == NULL) {
1995                break;
1996            }
1997
1998            int posMs;
1999            int64_t timeUs, posUs;
2000            driver->getCurrentPosition(&posMs);
2001            posUs = posMs * 1000;
2002            CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
2003
2004            if (posUs < timeUs) {
2005                if (!msg->findInt32("generation", &generation)) {
2006                    msg->setInt32("generation", mTimedTextGeneration);
2007                }
2008                msg->post(timeUs - posUs);
2009            } else {
2010                sendTimedTextData(buffer);
2011            }
2012            break;
2013        }
2014
2015        case Source::kWhatQueueDecoderShutdown:
2016        {
2017            int32_t audio, video;
2018            CHECK(msg->findInt32("audio", &audio));
2019            CHECK(msg->findInt32("video", &video));
2020
2021            sp<AMessage> reply;
2022            CHECK(msg->findMessage("reply", &reply));
2023
2024            queueDecoderShutdown(audio, video, reply);
2025            break;
2026        }
2027
2028        case Source::kWhatDrmNoLicense:
2029        {
2030            notifyListener(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, ERROR_DRM_NO_LICENSE);
2031            break;
2032        }
2033
2034        default:
2035            TRESPASS();
2036    }
2037}
2038
2039void NuPlayer::onClosedCaptionNotify(const sp<AMessage> &msg) {
2040    int32_t what;
2041    CHECK(msg->findInt32("what", &what));
2042
2043    switch (what) {
2044        case NuPlayer::CCDecoder::kWhatClosedCaptionData:
2045        {
2046            sp<ABuffer> buffer;
2047            CHECK(msg->findBuffer("buffer", &buffer));
2048
2049            size_t inbandTracks = 0;
2050            if (mSource != NULL) {
2051                inbandTracks = mSource->getTrackCount();
2052            }
2053
2054            sendSubtitleData(buffer, inbandTracks);
2055            break;
2056        }
2057
2058        case NuPlayer::CCDecoder::kWhatTrackAdded:
2059        {
2060            notifyListener(MEDIA_INFO, MEDIA_INFO_METADATA_UPDATE, 0);
2061
2062            break;
2063        }
2064
2065        default:
2066            TRESPASS();
2067    }
2068
2069
2070}
2071
2072void NuPlayer::sendSubtitleData(const sp<ABuffer> &buffer, int32_t baseIndex) {
2073    int32_t trackIndex;
2074    int64_t timeUs, durationUs;
2075    CHECK(buffer->meta()->findInt32("trackIndex", &trackIndex));
2076    CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
2077    CHECK(buffer->meta()->findInt64("durationUs", &durationUs));
2078
2079    Parcel in;
2080    in.writeInt32(trackIndex + baseIndex);
2081    in.writeInt64(timeUs);
2082    in.writeInt64(durationUs);
2083    in.writeInt32(buffer->size());
2084    in.writeInt32(buffer->size());
2085    in.write(buffer->data(), buffer->size());
2086
2087    notifyListener(MEDIA_SUBTITLE_DATA, 0, 0, &in);
2088}
2089
2090void NuPlayer::sendTimedTextData(const sp<ABuffer> &buffer) {
2091    const void *data;
2092    size_t size = 0;
2093    int64_t timeUs;
2094    int32_t flag = TextDescriptions::LOCAL_DESCRIPTIONS;
2095
2096    AString mime;
2097    CHECK(buffer->meta()->findString("mime", &mime));
2098    CHECK(strcasecmp(mime.c_str(), MEDIA_MIMETYPE_TEXT_3GPP) == 0);
2099
2100    data = buffer->data();
2101    size = buffer->size();
2102
2103    Parcel parcel;
2104    if (size > 0) {
2105        CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
2106        flag |= TextDescriptions::IN_BAND_TEXT_3GPP;
2107        TextDescriptions::getParcelOfDescriptions(
2108                (const uint8_t *)data, size, flag, timeUs / 1000, &parcel);
2109    }
2110
2111    if ((parcel.dataSize() > 0)) {
2112        notifyListener(MEDIA_TIMED_TEXT, 0, 0, &parcel);
2113    } else {  // send an empty timed text
2114        notifyListener(MEDIA_TIMED_TEXT, 0, 0);
2115    }
2116}
2117////////////////////////////////////////////////////////////////////////////////
2118
2119sp<AMessage> NuPlayer::Source::getFormat(bool audio) {
2120    sp<MetaData> meta = getFormatMeta(audio);
2121
2122    if (meta == NULL) {
2123        return NULL;
2124    }
2125
2126    sp<AMessage> msg = new AMessage;
2127
2128    if(convertMetaDataToMessage(meta, &msg) == OK) {
2129        return msg;
2130    }
2131    return NULL;
2132}
2133
2134void NuPlayer::Source::notifyFlagsChanged(uint32_t flags) {
2135    sp<AMessage> notify = dupNotify();
2136    notify->setInt32("what", kWhatFlagsChanged);
2137    notify->setInt32("flags", flags);
2138    notify->post();
2139}
2140
2141void NuPlayer::Source::notifyVideoSizeChanged(const sp<AMessage> &format) {
2142    sp<AMessage> notify = dupNotify();
2143    notify->setInt32("what", kWhatVideoSizeChanged);
2144    notify->setMessage("format", format);
2145    notify->post();
2146}
2147
2148void NuPlayer::Source::notifyPrepared(status_t err) {
2149    sp<AMessage> notify = dupNotify();
2150    notify->setInt32("what", kWhatPrepared);
2151    notify->setInt32("err", err);
2152    notify->post();
2153}
2154
2155void NuPlayer::Source::onMessageReceived(const sp<AMessage> & /* msg */) {
2156    TRESPASS();
2157}
2158
2159}  // namespace android
2160