NuPlayer.cpp revision 7e892180f3992c088dc0d44f0b0e54ace4dabe3c 
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      mVideoIsAVC(false),
149      mOffloadAudio(false),
150      mAudioEOS(false),
151      mVideoEOS(false),
152      mScanSourcesPending(false),
153      mScanSourcesGeneration(0),
154      mPollDurationGeneration(0),
155      mTimedTextGeneration(0),
156      mTimeDiscontinuityPending(false),
157      mFlushingAudio(NONE),
158      mFlushingVideo(NONE),
159      mSkipRenderingAudioUntilMediaTimeUs(-1ll),
160      mSkipRenderingVideoUntilMediaTimeUs(-1ll),
161      mVideoLateByUs(0ll),
162      mNumFramesTotal(0ll),
163      mNumFramesDropped(0ll),
164      mVideoScalingMode(NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW),
165      mStarted(false) {
166}
167
168NuPlayer::~NuPlayer() {
169}
170
171void NuPlayer::setUID(uid_t uid) {
172    mUIDValid = true;
173    mUID = uid;
174}
175
176void NuPlayer::setDriver(const wp<NuPlayerDriver> &driver) {
177    mDriver = driver;
178}
179
180void NuPlayer::setDataSourceAsync(const sp<IStreamSource> &source) {
181    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
182
183    sp<AMessage> notify = new AMessage(kWhatSourceNotify, id());
184
185    msg->setObject("source", new StreamingSource(notify, source));
186    msg->post();
187}
188
189static bool IsHTTPLiveURL(const char *url) {
190    if (!strncasecmp("http://", url, 7)
191            || !strncasecmp("https://", url, 8)
192            || !strncasecmp("file://", url, 7)) {
193        size_t len = strlen(url);
194        if (len >= 5 && !strcasecmp(".m3u8", &url[len - 5])) {
195            return true;
196        }
197
198        if (strstr(url,"m3u8")) {
199            return true;
200        }
201    }
202
203    return false;
204}
205
206void NuPlayer::setDataSourceAsync(
207        const sp<IMediaHTTPService> &httpService,
208        const char *url,
209        const KeyedVector<String8, String8> *headers) {
210    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
211    size_t len = strlen(url);
212
213    sp<AMessage> notify = new AMessage(kWhatSourceNotify, id());
214
215    sp<Source> source;
216    if (IsHTTPLiveURL(url)) {
217        source = new HTTPLiveSource(notify, httpService, url, headers);
218    } else if (!strncasecmp(url, "rtsp://", 7)) {
219        source = new RTSPSource(
220                notify, httpService, url, headers, mUIDValid, mUID);
221    } else if ((!strncasecmp(url, "http://", 7)
222                || !strncasecmp(url, "https://", 8))
223                    && ((len >= 4 && !strcasecmp(".sdp", &url[len - 4]))
224                    || strstr(url, ".sdp?"))) {
225        source = new RTSPSource(
226                notify, httpService, url, headers, mUIDValid, mUID, true);
227    } else if ((!strncasecmp(url, "widevine://", 11))) {
228        source = new GenericSource(notify, httpService, url, headers,
229                true /* isWidevine */, mUIDValid, mUID);
230        // Don't set FLAG_SECURE on mSourceFlags here, the correct flags
231        // will be updated in Source::kWhatFlagsChanged handler when
232        // GenericSource is prepared.
233    } else {
234        source = new GenericSource(notify, httpService, url, headers);
235    }
236
237    msg->setObject("source", source);
238    msg->post();
239}
240
241void NuPlayer::setDataSourceAsync(int fd, int64_t offset, int64_t length) {
242    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
243
244    sp<AMessage> notify = new AMessage(kWhatSourceNotify, id());
245
246    sp<Source> source = new GenericSource(notify, fd, offset, length);
247    msg->setObject("source", source);
248    msg->post();
249}
250
251void NuPlayer::prepareAsync() {
252    (new AMessage(kWhatPrepare, id()))->post();
253}
254
255void NuPlayer::setVideoSurfaceTextureAsync(
256        const sp<IGraphicBufferProducer> &bufferProducer) {
257    sp<AMessage> msg = new AMessage(kWhatSetVideoNativeWindow, id());
258
259    if (bufferProducer == NULL) {
260        msg->setObject("native-window", NULL);
261    } else {
262        msg->setObject(
263                "native-window",
264                new NativeWindowWrapper(
265                    new Surface(bufferProducer)));
266    }
267
268    msg->post();
269}
270
271void NuPlayer::setAudioSink(const sp<MediaPlayerBase::AudioSink> &sink) {
272    sp<AMessage> msg = new AMessage(kWhatSetAudioSink, id());
273    msg->setObject("sink", sink);
274    msg->post();
275}
276
277void NuPlayer::start() {
278    (new AMessage(kWhatStart, id()))->post();
279}
280
281void NuPlayer::pause() {
282    (new AMessage(kWhatPause, id()))->post();
283}
284
285void NuPlayer::resume() {
286    (new AMessage(kWhatResume, id()))->post();
287}
288
289void NuPlayer::resetAsync() {
290    (new AMessage(kWhatReset, id()))->post();
291}
292
293void NuPlayer::seekToAsync(int64_t seekTimeUs) {
294    sp<AMessage> msg = new AMessage(kWhatSeek, id());
295    msg->setInt64("seekTimeUs", seekTimeUs);
296    msg->post();
297}
298
299// static
300bool NuPlayer::IsFlushingState(FlushStatus state, bool *needShutdown) {
301    switch (state) {
302        case FLUSHING_DECODER:
303            if (needShutdown != NULL) {
304                *needShutdown = false;
305            }
306            return true;
307
308        case FLUSHING_DECODER_SHUTDOWN:
309            if (needShutdown != NULL) {
310                *needShutdown = true;
311            }
312            return true;
313
314        default:
315            return false;
316    }
317}
318
319void NuPlayer::writeTrackInfo(
320        Parcel* reply, const sp<AMessage> format) const {
321    int32_t trackType;
322    CHECK(format->findInt32("type", &trackType));
323
324    AString lang;
325    CHECK(format->findString("language", &lang));
326
327    reply->writeInt32(2); // write something non-zero
328    reply->writeInt32(trackType);
329    reply->writeString16(String16(lang.c_str()));
330
331    if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) {
332        AString mime;
333        CHECK(format->findString("mime", &mime));
334
335        int32_t isAuto, isDefault, isForced;
336        CHECK(format->findInt32("auto", &isAuto));
337        CHECK(format->findInt32("default", &isDefault));
338        CHECK(format->findInt32("forced", &isForced));
339
340        reply->writeString16(String16(mime.c_str()));
341        reply->writeInt32(isAuto);
342        reply->writeInt32(isDefault);
343        reply->writeInt32(isForced);
344    }
345}
346
347void NuPlayer::onMessageReceived(const sp<AMessage> &msg) {
348    switch (msg->what()) {
349        case kWhatSetDataSource:
350        {
351            ALOGV("kWhatSetDataSource");
352
353            CHECK(mSource == NULL);
354
355            sp<RefBase> obj;
356            CHECK(msg->findObject("source", &obj));
357
358            mSource = static_cast<Source *>(obj.get());
359
360            looper()->registerHandler(mSource);
361
362            CHECK(mDriver != NULL);
363            sp<NuPlayerDriver> driver = mDriver.promote();
364            if (driver != NULL) {
365                driver->notifySetDataSourceCompleted(OK);
366            }
367            break;
368        }
369
370        case kWhatPrepare:
371        {
372            mSource->prepareAsync();
373            break;
374        }
375
376        case kWhatGetTrackInfo:
377        {
378            uint32_t replyID;
379            CHECK(msg->senderAwaitsResponse(&replyID));
380
381            Parcel* reply;
382            CHECK(msg->findPointer("reply", (void**)&reply));
383
384            size_t inbandTracks = 0;
385            if (mSource != NULL) {
386                inbandTracks = mSource->getTrackCount();
387            }
388
389            size_t ccTracks = 0;
390            if (mCCDecoder != NULL) {
391                ccTracks = mCCDecoder->getTrackCount();
392            }
393
394            // total track count
395            reply->writeInt32(inbandTracks + ccTracks);
396
397            // write inband tracks
398            for (size_t i = 0; i < inbandTracks; ++i) {
399                writeTrackInfo(reply, mSource->getTrackInfo(i));
400            }
401
402            // write CC track
403            for (size_t i = 0; i < ccTracks; ++i) {
404                writeTrackInfo(reply, mCCDecoder->getTrackInfo(i));
405            }
406
407            sp<AMessage> response = new AMessage;
408            response->postReply(replyID);
409            break;
410        }
411
412        case kWhatSelectTrack:
413        {
414            uint32_t replyID;
415            CHECK(msg->senderAwaitsResponse(&replyID));
416
417            size_t trackIndex;
418            int32_t select;
419            CHECK(msg->findSize("trackIndex", &trackIndex));
420            CHECK(msg->findInt32("select", &select));
421
422            status_t err = INVALID_OPERATION;
423
424            size_t inbandTracks = 0;
425            if (mSource != NULL) {
426                inbandTracks = mSource->getTrackCount();
427            }
428            size_t ccTracks = 0;
429            if (mCCDecoder != NULL) {
430                ccTracks = mCCDecoder->getTrackCount();
431            }
432
433            if (trackIndex < inbandTracks) {
434                err = mSource->selectTrack(trackIndex, select);
435
436                if (!select && err == OK) {
437                    int32_t type;
438                    sp<AMessage> info = mSource->getTrackInfo(trackIndex);
439                    if (info != NULL
440                            && info->findInt32("type", &type)
441                            && type == MEDIA_TRACK_TYPE_TIMEDTEXT) {
442                        ++mTimedTextGeneration;
443                    }
444                }
445            } else {
446                trackIndex -= inbandTracks;
447
448                if (trackIndex < ccTracks) {
449                    err = mCCDecoder->selectTrack(trackIndex, select);
450                }
451            }
452
453            sp<AMessage> response = new AMessage;
454            response->setInt32("err", err);
455
456            response->postReply(replyID);
457            break;
458        }
459
460        case kWhatPollDuration:
461        {
462            int32_t generation;
463            CHECK(msg->findInt32("generation", &generation));
464
465            if (generation != mPollDurationGeneration) {
466                // stale
467                break;
468            }
469
470            int64_t durationUs;
471            if (mDriver != NULL && mSource->getDuration(&durationUs) == OK) {
472                sp<NuPlayerDriver> driver = mDriver.promote();
473                if (driver != NULL) {
474                    driver->notifyDuration(durationUs);
475                }
476            }
477
478            msg->post(1000000ll);  // poll again in a second.
479            break;
480        }
481
482        case kWhatSetVideoNativeWindow:
483        {
484            ALOGV("kWhatSetVideoNativeWindow");
485
486            mDeferredActions.push_back(
487                    new ShutdownDecoderAction(
488                        false /* audio */, true /* video */));
489
490            sp<RefBase> obj;
491            CHECK(msg->findObject("native-window", &obj));
492
493            mDeferredActions.push_back(
494                    new SetSurfaceAction(
495                        static_cast<NativeWindowWrapper *>(obj.get())));
496
497            if (obj != NULL) {
498                // If there is a new surface texture, instantiate decoders
499                // again if possible.
500                mDeferredActions.push_back(
501                        new SimpleAction(&NuPlayer::performScanSources));
502            }
503
504            processDeferredActions();
505            break;
506        }
507
508        case kWhatSetAudioSink:
509        {
510            ALOGV("kWhatSetAudioSink");
511
512            sp<RefBase> obj;
513            CHECK(msg->findObject("sink", &obj));
514
515            mAudioSink = static_cast<MediaPlayerBase::AudioSink *>(obj.get());
516            break;
517        }
518
519        case kWhatStart:
520        {
521            ALOGV("kWhatStart");
522
523            mVideoIsAVC = false;
524            mOffloadAudio = false;
525            mAudioEOS = false;
526            mVideoEOS = false;
527            mSkipRenderingAudioUntilMediaTimeUs = -1;
528            mSkipRenderingVideoUntilMediaTimeUs = -1;
529            mVideoLateByUs = 0;
530            mNumFramesTotal = 0;
531            mNumFramesDropped = 0;
532            mStarted = true;
533
534            /* instantiate decoders now for secure playback */
535            if (mSourceFlags & Source::FLAG_SECURE) {
536                if (mNativeWindow != NULL) {
537                    instantiateDecoder(false, &mVideoDecoder);
538                }
539
540                if (mAudioSink != NULL) {
541                    instantiateDecoder(true, &mAudioDecoder);
542                }
543            }
544
545            mSource->start();
546
547            uint32_t flags = 0;
548
549            if (mSource->isRealTime()) {
550                flags |= Renderer::FLAG_REAL_TIME;
551            }
552
553            sp<MetaData> audioMeta = mSource->getFormatMeta(true /* audio */);
554            audio_stream_type_t streamType = AUDIO_STREAM_MUSIC;
555            if (mAudioSink != NULL) {
556                streamType = mAudioSink->getAudioStreamType();
557            }
558
559            sp<AMessage> videoFormat = mSource->getFormat(false /* audio */);
560
561            mOffloadAudio =
562                canOffloadStream(audioMeta, (videoFormat != NULL),
563                                 true /* is_streaming */, streamType);
564            if (mOffloadAudio) {
565                flags |= Renderer::FLAG_OFFLOAD_AUDIO;
566            }
567
568            mRenderer = new Renderer(
569                    mAudioSink,
570                    new AMessage(kWhatRendererNotify, id()),
571                    flags);
572
573            mRendererLooper = new ALooper;
574            mRendererLooper->setName("NuPlayerRenderer");
575            mRendererLooper->start(false, false, ANDROID_PRIORITY_AUDIO);
576            mRendererLooper->registerHandler(mRenderer);
577
578            postScanSources();
579            break;
580        }
581
582        case kWhatScanSources:
583        {
584            int32_t generation;
585            CHECK(msg->findInt32("generation", &generation));
586            if (generation != mScanSourcesGeneration) {
587                // Drop obsolete msg.
588                break;
589            }
590
591            mScanSourcesPending = false;
592
593            ALOGV("scanning sources haveAudio=%d, haveVideo=%d",
594                 mAudioDecoder != NULL, mVideoDecoder != NULL);
595
596            bool mHadAnySourcesBefore =
597                (mAudioDecoder != NULL) || (mVideoDecoder != NULL);
598
599            if (mNativeWindow != NULL) {
600                instantiateDecoder(false, &mVideoDecoder);
601            }
602
603            if (mAudioSink != NULL) {
604                instantiateDecoder(true, &mAudioDecoder);
605            }
606
607            if (!mHadAnySourcesBefore
608                    && (mAudioDecoder != NULL || mVideoDecoder != NULL)) {
609                // This is the first time we've found anything playable.
610
611                if (mSourceFlags & Source::FLAG_DYNAMIC_DURATION) {
612                    schedulePollDuration();
613                }
614            }
615
616            status_t err;
617            if ((err = mSource->feedMoreTSData()) != OK) {
618                if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
619                    // We're not currently decoding anything (no audio or
620                    // video tracks found) and we just ran out of input data.
621
622                    if (err == ERROR_END_OF_STREAM) {
623                        notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
624                    } else {
625                        notifyListener(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, err);
626                    }
627                }
628                break;
629            }
630
631            if ((mAudioDecoder == NULL && mAudioSink != NULL)
632                    || (mVideoDecoder == NULL && mNativeWindow != NULL)) {
633                msg->post(100000ll);
634                mScanSourcesPending = true;
635            }
636            break;
637        }
638
639        case kWhatVideoNotify:
640        case kWhatAudioNotify:
641        {
642            bool audio = msg->what() == kWhatAudioNotify;
643
644            int32_t what;
645            CHECK(msg->findInt32("what", &what));
646
647            if (what == Decoder::kWhatFillThisBuffer) {
648                status_t err = feedDecoderInputData(
649                        audio, msg);
650
651                if (err == -EWOULDBLOCK) {
652                    if (mSource->feedMoreTSData() == OK) {
653                        msg->post(10000ll);
654                    }
655                }
656            } else if (what == Decoder::kWhatEOS) {
657                int32_t err;
658                CHECK(msg->findInt32("err", &err));
659
660                if (err == ERROR_END_OF_STREAM) {
661                    ALOGV("got %s decoder EOS", audio ? "audio" : "video");
662                } else {
663                    ALOGV("got %s decoder EOS w/ error %d",
664                         audio ? "audio" : "video",
665                         err);
666                }
667
668                mRenderer->queueEOS(audio, err);
669            } else if (what == Decoder::kWhatFlushCompleted) {
670                bool needShutdown;
671
672                if (audio) {
673                    CHECK(IsFlushingState(mFlushingAudio, &needShutdown));
674                    mFlushingAudio = FLUSHED;
675                } else {
676                    CHECK(IsFlushingState(mFlushingVideo, &needShutdown));
677                    mFlushingVideo = FLUSHED;
678
679                    mVideoLateByUs = 0;
680                }
681
682                ALOGV("decoder %s flush completed", audio ? "audio" : "video");
683
684                if (needShutdown) {
685                    ALOGV("initiating %s decoder shutdown",
686                         audio ? "audio" : "video");
687
688                    (audio ? mAudioDecoder : mVideoDecoder)->initiateShutdown();
689
690                    if (audio) {
691                        mFlushingAudio = SHUTTING_DOWN_DECODER;
692                    } else {
693                        mFlushingVideo = SHUTTING_DOWN_DECODER;
694                    }
695                }
696
697                finishFlushIfPossible();
698            } else if (what == Decoder::kWhatOutputFormatChanged) {
699                sp<AMessage> format;
700                CHECK(msg->findMessage("format", &format));
701
702                if (audio) {
703                    int32_t numChannels;
704                    CHECK(format->findInt32(
705                                "channel-count", &numChannels));
706
707                    int32_t sampleRate;
708                    CHECK(format->findInt32("sample-rate", &sampleRate));
709
710                    ALOGV("Audio output format changed to %d Hz, %d channels",
711                         sampleRate, numChannels);
712
713                    mAudioSink->close();
714
715                    uint32_t flags;
716                    int64_t durationUs;
717                    // FIXME: we should handle the case where the video decoder
718                    // is created after we receive the format change indication.
719                    // Current code will just make that we select deep buffer
720                    // with video which should not be a problem as it should
721                    // not prevent from keeping A/V sync.
722                    if (mVideoDecoder == NULL &&
723                            mSource->getDuration(&durationUs) == OK &&
724                            durationUs
725                                > AUDIO_SINK_MIN_DEEP_BUFFER_DURATION_US) {
726                        flags = AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
727                    } else {
728                        flags = AUDIO_OUTPUT_FLAG_NONE;
729                    }
730
731                    int32_t channelMask;
732                    if (!format->findInt32("channel-mask", &channelMask)) {
733                        channelMask = CHANNEL_MASK_USE_CHANNEL_ORDER;
734                    }
735
736                    if (mOffloadAudio) {
737                        audio_format_t audioFormat = AUDIO_FORMAT_PCM_16_BIT;
738                        audio_offload_info_t offloadInfo =
739                                AUDIO_INFO_INITIALIZER;
740
741                        AString mime;
742                        CHECK(format->findString("mime", &mime));
743
744                        status_t err =
745                            mapMimeToAudioFormat(audioFormat, mime.c_str());
746                        if (err != OK) {
747                            ALOGE("Couldn't map mime \"%s\" to a valid "
748                                    "audio_format", mime.c_str());
749                            mOffloadAudio = false;
750                        } else {
751                            ALOGV("Mime \"%s\" mapped to audio_format 0x%x",
752                                    mime.c_str(), audioFormat);
753
754                            flags |= AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
755
756                            offloadInfo.duration_us = -1;
757                            format->findInt64(
758                                    "durationUs", &offloadInfo.duration_us);
759
760                            int avgBitRate = -1;
761                            format->findInt32("bit-rate", &avgBitRate);
762
763                            offloadInfo.sample_rate = sampleRate;
764                            offloadInfo.channel_mask = channelMask;
765                            offloadInfo.format = audioFormat;
766                            offloadInfo.stream_type = AUDIO_STREAM_MUSIC;
767                            offloadInfo.bit_rate = avgBitRate;
768                            offloadInfo.has_video = (mVideoDecoder != NULL);
769                            offloadInfo.is_streaming = true;
770
771                            ALOGV("try to open AudioSink in offload mode");
772                            err = mAudioSink->open(
773                                    sampleRate,
774                                    numChannels,
775                                    (audio_channel_mask_t)channelMask,
776                                    audioFormat,
777                                    8 /* bufferCount */,
778                                    &NuPlayer::Renderer::AudioSinkCallback,
779                                    mRenderer.get(),
780                                    (audio_output_flags_t)flags,
781                                    &offloadInfo);
782
783                            if (err == OK) {
784                                // If the playback is offloaded to h/w, we pass
785                                // the HAL some metadata information.
786                                // We don't want to do this for PCM because it
787                                // will be going through the AudioFlinger mixer
788                                // before reaching the hardware.
789                                sp<MetaData> audioMeta =
790                                    mSource->getFormatMeta(true /* audio */);
791                                sendMetaDataToHal(mAudioSink, audioMeta);
792
793                                err = mAudioSink->start();
794                            }
795                        }
796
797                        if (err != OK) {
798                            // Clean up, fall back to non offload mode.
799                            mAudioSink->close();
800                            mAudioDecoder.clear();
801                            mRenderer->signalDisableOffloadAudio();
802                            mOffloadAudio = false;
803
804                            instantiateDecoder(
805                                    true /* audio */, &mAudioDecoder);
806                        }
807                    }
808
809                    if (!mOffloadAudio) {
810                        flags &= ~AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
811                        ALOGV("open AudioSink in NON-offload mode");
812                        CHECK_EQ(mAudioSink->open(
813                                    sampleRate,
814                                    numChannels,
815                                    (audio_channel_mask_t)channelMask,
816                                    AUDIO_FORMAT_PCM_16_BIT,
817                                    8 /* bufferCount */,
818                                    NULL,
819                                    NULL,
820                                    (audio_output_flags_t)flags),
821                                 (status_t)OK);
822                        mAudioSink->start();
823                    }
824
825                    mRenderer->signalAudioSinkChanged();
826                } else {
827                    // video
828
829                    int32_t width, height;
830                    CHECK(format->findInt32("width", &width));
831                    CHECK(format->findInt32("height", &height));
832
833                    int32_t cropLeft, cropTop, cropRight, cropBottom;
834                    CHECK(format->findRect(
835                                "crop",
836                                &cropLeft, &cropTop, &cropRight, &cropBottom));
837
838                    int32_t displayWidth = cropRight - cropLeft + 1;
839                    int32_t displayHeight = cropBottom - cropTop + 1;
840
841                    ALOGV("Video output format changed to %d x %d "
842                         "(crop: %d x %d @ (%d, %d))",
843                         width, height,
844                         displayWidth,
845                         displayHeight,
846                         cropLeft, cropTop);
847
848                    sp<AMessage> videoInputFormat =
849                        mSource->getFormat(false /* audio */);
850
851                    // Take into account sample aspect ratio if necessary:
852                    int32_t sarWidth, sarHeight;
853                    if (videoInputFormat->findInt32("sar-width", &sarWidth)
854                            && videoInputFormat->findInt32(
855                                "sar-height", &sarHeight)) {
856                        ALOGV("Sample aspect ratio %d : %d",
857                              sarWidth, sarHeight);
858
859                        displayWidth = (displayWidth * sarWidth) / sarHeight;
860
861                        ALOGV("display dimensions %d x %d",
862                              displayWidth, displayHeight);
863                    }
864
865                    int32_t rotationDegrees;
866                    if (!videoInputFormat->findInt32(
867                            "rotation-degrees", &rotationDegrees)) {
868                        rotationDegrees = 0;
869                    }
870
871                    if (rotationDegrees == 90 || rotationDegrees == 270) {
872                        notifyListener(
873                                MEDIA_SET_VIDEO_SIZE,
874                                displayHeight,
875                                displayWidth);
876                    } else {
877                        notifyListener(
878                                MEDIA_SET_VIDEO_SIZE,
879                                displayWidth,
880                                displayHeight);
881                    }
882                }
883            } else if (what == Decoder::kWhatShutdownCompleted) {
884                ALOGV("%s shutdown completed", audio ? "audio" : "video");
885                if (audio) {
886                    mAudioDecoder.clear();
887
888                    CHECK_EQ((int)mFlushingAudio, (int)SHUTTING_DOWN_DECODER);
889                    mFlushingAudio = SHUT_DOWN;
890                } else {
891                    mVideoDecoder.clear();
892
893                    CHECK_EQ((int)mFlushingVideo, (int)SHUTTING_DOWN_DECODER);
894                    mFlushingVideo = SHUT_DOWN;
895                }
896
897                finishFlushIfPossible();
898            } else if (what == Decoder::kWhatError) {
899                ALOGE("Received error from %s decoder, aborting playback.",
900                     audio ? "audio" : "video");
901
902                mRenderer->queueEOS(audio, UNKNOWN_ERROR);
903            } else if (what == Decoder::kWhatDrainThisBuffer) {
904                renderBuffer(audio, msg);
905            } else {
906                ALOGV("Unhandled decoder notification %d '%c%c%c%c'.",
907                      what,
908                      what >> 24,
909                      (what >> 16) & 0xff,
910                      (what >> 8) & 0xff,
911                      what & 0xff);
912            }
913
914            break;
915        }
916
917        case kWhatRendererNotify:
918        {
919            int32_t what;
920            CHECK(msg->findInt32("what", &what));
921
922            if (what == Renderer::kWhatEOS) {
923                int32_t audio;
924                CHECK(msg->findInt32("audio", &audio));
925
926                int32_t finalResult;
927                CHECK(msg->findInt32("finalResult", &finalResult));
928
929                if (audio) {
930                    mAudioEOS = true;
931                } else {
932                    mVideoEOS = true;
933                }
934
935                if (finalResult == ERROR_END_OF_STREAM) {
936                    ALOGV("reached %s EOS", audio ? "audio" : "video");
937                } else {
938                    ALOGE("%s track encountered an error (%d)",
939                         audio ? "audio" : "video", finalResult);
940
941                    notifyListener(
942                            MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, finalResult);
943                }
944
945                if ((mAudioEOS || mAudioDecoder == NULL)
946                        && (mVideoEOS || mVideoDecoder == NULL)) {
947                    notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
948                }
949            } else if (what == Renderer::kWhatPosition) {
950                int64_t positionUs;
951                CHECK(msg->findInt64("positionUs", &positionUs));
952
953                CHECK(msg->findInt64("videoLateByUs", &mVideoLateByUs));
954
955                if (mDriver != NULL) {
956                    sp<NuPlayerDriver> driver = mDriver.promote();
957                    if (driver != NULL) {
958                        driver->notifyPosition(positionUs);
959
960                        driver->notifyFrameStats(
961                                mNumFramesTotal, mNumFramesDropped);
962                    }
963                }
964            } else if (what == Renderer::kWhatFlushComplete) {
965                int32_t audio;
966                CHECK(msg->findInt32("audio", &audio));
967
968                ALOGV("renderer %s flush completed.", audio ? "audio" : "video");
969            } else if (what == Renderer::kWhatVideoRenderingStart) {
970                notifyListener(MEDIA_INFO, MEDIA_INFO_RENDERING_START, 0);
971            } else if (what == Renderer::kWhatMediaRenderingStart) {
972                ALOGV("media rendering started");
973                notifyListener(MEDIA_STARTED, 0, 0);
974            } else if (what == Renderer::kWhatAudioOffloadTearDown) {
975                ALOGV("Tear down audio offload, fall back to s/w path");
976                int64_t positionUs;
977                CHECK(msg->findInt64("positionUs", &positionUs));
978                mAudioSink->close();
979                mAudioDecoder.clear();
980                mRenderer->flush(true /* audio */);
981                if (mVideoDecoder != NULL) {
982                    mRenderer->flush(false /* audio */);
983                }
984                mRenderer->signalDisableOffloadAudio();
985                mOffloadAudio = false;
986
987                performSeek(positionUs);
988                instantiateDecoder(true /* audio */, &mAudioDecoder);
989            }
990            break;
991        }
992
993        case kWhatMoreDataQueued:
994        {
995            break;
996        }
997
998        case kWhatReset:
999        {
1000            ALOGV("kWhatReset");
1001
1002            mDeferredActions.push_back(
1003                    new ShutdownDecoderAction(
1004                        true /* audio */, true /* video */));
1005
1006            mDeferredActions.push_back(
1007                    new SimpleAction(&NuPlayer::performReset));
1008
1009            processDeferredActions();
1010            break;
1011        }
1012
1013        case kWhatSeek:
1014        {
1015            int64_t seekTimeUs;
1016            CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
1017
1018            ALOGV("kWhatSeek seekTimeUs=%lld us", seekTimeUs);
1019
1020            mDeferredActions.push_back(
1021                    new SimpleAction(&NuPlayer::performDecoderFlush));
1022
1023            mDeferredActions.push_back(new SeekAction(seekTimeUs));
1024
1025            processDeferredActions();
1026            break;
1027        }
1028
1029        case kWhatPause:
1030        {
1031            CHECK(mRenderer != NULL);
1032            mSource->pause();
1033            mRenderer->pause();
1034            break;
1035        }
1036
1037        case kWhatResume:
1038        {
1039            CHECK(mRenderer != NULL);
1040            mSource->resume();
1041            mRenderer->resume();
1042            break;
1043        }
1044
1045        case kWhatSourceNotify:
1046        {
1047            onSourceNotify(msg);
1048            break;
1049        }
1050
1051        case kWhatClosedCaptionNotify:
1052        {
1053            onClosedCaptionNotify(msg);
1054            break;
1055        }
1056
1057        default:
1058            TRESPASS();
1059            break;
1060    }
1061}
1062
1063void NuPlayer::finishFlushIfPossible() {
1064    if (mFlushingAudio != FLUSHED && mFlushingAudio != SHUT_DOWN) {
1065        return;
1066    }
1067
1068    if (mFlushingVideo != FLUSHED && mFlushingVideo != SHUT_DOWN) {
1069        return;
1070    }
1071
1072    ALOGV("both audio and video are flushed now.");
1073
1074    if (mTimeDiscontinuityPending) {
1075        mRenderer->signalTimeDiscontinuity();
1076        mTimeDiscontinuityPending = false;
1077    }
1078
1079    if (mAudioDecoder != NULL) {
1080        mAudioDecoder->signalResume();
1081    }
1082
1083    if (mVideoDecoder != NULL) {
1084        mVideoDecoder->signalResume();
1085    }
1086
1087    mFlushingAudio = NONE;
1088    mFlushingVideo = NONE;
1089
1090    processDeferredActions();
1091}
1092
1093void NuPlayer::postScanSources() {
1094    if (mScanSourcesPending) {
1095        return;
1096    }
1097
1098    sp<AMessage> msg = new AMessage(kWhatScanSources, id());
1099    msg->setInt32("generation", mScanSourcesGeneration);
1100    msg->post();
1101
1102    mScanSourcesPending = true;
1103}
1104
1105status_t NuPlayer::instantiateDecoder(bool audio, sp<Decoder> *decoder) {
1106    if (*decoder != NULL) {
1107        return OK;
1108    }
1109
1110    sp<AMessage> format = mSource->getFormat(audio);
1111
1112    if (format == NULL) {
1113        return -EWOULDBLOCK;
1114    }
1115
1116    if (!audio) {
1117        AString mime;
1118        CHECK(format->findString("mime", &mime));
1119        mVideoIsAVC = !strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime.c_str());
1120
1121        sp<AMessage> ccNotify = new AMessage(kWhatClosedCaptionNotify, id());
1122        mCCDecoder = new CCDecoder(ccNotify);
1123
1124        if (mSourceFlags & Source::FLAG_SECURE) {
1125            format->setInt32("secure", true);
1126        }
1127    }
1128
1129    sp<AMessage> notify =
1130        new AMessage(audio ? kWhatAudioNotify : kWhatVideoNotify,
1131                     id());
1132
1133    if (audio) {
1134        if (mOffloadAudio) {
1135            *decoder = new DecoderPassThrough(notify);
1136        } else {
1137            *decoder = new Decoder(notify);
1138        }
1139    } else {
1140        *decoder = new Decoder(notify, mNativeWindow);
1141    }
1142    (*decoder)->init();
1143    (*decoder)->configure(format);
1144
1145    // allocate buffers to decrypt widevine source buffers
1146    if (!audio && (mSourceFlags & Source::FLAG_SECURE)) {
1147        Vector<sp<ABuffer> > inputBufs;
1148        CHECK_EQ((*decoder)->getInputBuffers(&inputBufs), (status_t)OK);
1149
1150        Vector<MediaBuffer *> mediaBufs;
1151        for (size_t i = 0; i < inputBufs.size(); i++) {
1152            const sp<ABuffer> &buffer = inputBufs[i];
1153            MediaBuffer *mbuf = new MediaBuffer(buffer->data(), buffer->size());
1154            mediaBufs.push(mbuf);
1155        }
1156
1157        status_t err = mSource->setBuffers(audio, mediaBufs);
1158        if (err != OK) {
1159            for (size_t i = 0; i < mediaBufs.size(); ++i) {
1160                mediaBufs[i]->release();
1161            }
1162            mediaBufs.clear();
1163            ALOGE("Secure source didn't support secure mediaBufs.");
1164            return err;
1165        }
1166    }
1167    return OK;
1168}
1169
1170status_t NuPlayer::feedDecoderInputData(bool audio, const sp<AMessage> &msg) {
1171    sp<AMessage> reply;
1172    CHECK(msg->findMessage("reply", &reply));
1173
1174    if ((audio && IsFlushingState(mFlushingAudio))
1175            || (!audio && IsFlushingState(mFlushingVideo))) {
1176        reply->setInt32("err", INFO_DISCONTINUITY);
1177        reply->post();
1178        return OK;
1179    }
1180
1181    sp<ABuffer> accessUnit;
1182
1183    bool dropAccessUnit;
1184    do {
1185        status_t err = mSource->dequeueAccessUnit(audio, &accessUnit);
1186
1187        if (err == -EWOULDBLOCK) {
1188            return err;
1189        } else if (err != OK) {
1190            if (err == INFO_DISCONTINUITY) {
1191                int32_t type;
1192                CHECK(accessUnit->meta()->findInt32("discontinuity", &type));
1193
1194                bool formatChange =
1195                    (audio &&
1196                     (type & ATSParser::DISCONTINUITY_AUDIO_FORMAT))
1197                    || (!audio &&
1198                            (type & ATSParser::DISCONTINUITY_VIDEO_FORMAT));
1199
1200                bool timeChange = (type & ATSParser::DISCONTINUITY_TIME) != 0;
1201
1202                ALOGI("%s discontinuity (formatChange=%d, time=%d)",
1203                     audio ? "audio" : "video", formatChange, timeChange);
1204
1205                if (audio) {
1206                    mSkipRenderingAudioUntilMediaTimeUs = -1;
1207                } else {
1208                    mSkipRenderingVideoUntilMediaTimeUs = -1;
1209                }
1210
1211                if (timeChange) {
1212                    sp<AMessage> extra;
1213                    if (accessUnit->meta()->findMessage("extra", &extra)
1214                            && extra != NULL) {
1215                        int64_t resumeAtMediaTimeUs;
1216                        if (extra->findInt64(
1217                                    "resume-at-mediatimeUs", &resumeAtMediaTimeUs)) {
1218                            ALOGI("suppressing rendering of %s until %lld us",
1219                                    audio ? "audio" : "video", resumeAtMediaTimeUs);
1220
1221                            if (audio) {
1222                                mSkipRenderingAudioUntilMediaTimeUs =
1223                                    resumeAtMediaTimeUs;
1224                            } else {
1225                                mSkipRenderingVideoUntilMediaTimeUs =
1226                                    resumeAtMediaTimeUs;
1227                            }
1228                        }
1229                    }
1230                }
1231
1232                mTimeDiscontinuityPending =
1233                    mTimeDiscontinuityPending || timeChange;
1234
1235                if (mFlushingAudio == NONE && mFlushingVideo == NONE) {
1236                    // And we'll resume scanning sources once we're done
1237                    // flushing.
1238                    mDeferredActions.push_front(
1239                            new SimpleAction(
1240                                &NuPlayer::performScanSources));
1241                }
1242
1243                if (formatChange || timeChange) {
1244
1245                    sp<AMessage> newFormat = mSource->getFormat(audio);
1246                    sp<Decoder> &decoder = audio ? mAudioDecoder : mVideoDecoder;
1247                    if (formatChange && !decoder->supportsSeamlessFormatChange(newFormat)) {
1248                        flushDecoder(audio, /* needShutdown = */ true);
1249                    } else {
1250                        flushDecoder(audio, /* needShutdown = */ false);
1251                        err = OK;
1252                    }
1253                } else {
1254                    // This stream is unaffected by the discontinuity
1255
1256                    if (audio) {
1257                        mFlushingAudio = FLUSHED;
1258                    } else {
1259                        mFlushingVideo = FLUSHED;
1260                    }
1261
1262                    finishFlushIfPossible();
1263
1264                    return -EWOULDBLOCK;
1265                }
1266            }
1267
1268            reply->setInt32("err", err);
1269            reply->post();
1270            return OK;
1271        }
1272
1273        if (!audio) {
1274            ++mNumFramesTotal;
1275        }
1276
1277        dropAccessUnit = false;
1278        if (!audio
1279                && !(mSourceFlags & Source::FLAG_SECURE)
1280                && mVideoLateByUs > 100000ll
1281                && mVideoIsAVC
1282                && !IsAVCReferenceFrame(accessUnit)) {
1283            dropAccessUnit = true;
1284            ++mNumFramesDropped;
1285        }
1286    } while (dropAccessUnit);
1287
1288    // ALOGV("returned a valid buffer of %s data", audio ? "audio" : "video");
1289
1290#if 0
1291    int64_t mediaTimeUs;
1292    CHECK(accessUnit->meta()->findInt64("timeUs", &mediaTimeUs));
1293    ALOGV("feeding %s input buffer at media time %.2f secs",
1294         audio ? "audio" : "video",
1295         mediaTimeUs / 1E6);
1296#endif
1297
1298    if (!audio) {
1299        mCCDecoder->decode(accessUnit);
1300    }
1301
1302    reply->setBuffer("buffer", accessUnit);
1303    reply->post();
1304
1305    return OK;
1306}
1307
1308void NuPlayer::renderBuffer(bool audio, const sp<AMessage> &msg) {
1309    // ALOGV("renderBuffer %s", audio ? "audio" : "video");
1310
1311    sp<AMessage> reply;
1312    CHECK(msg->findMessage("reply", &reply));
1313
1314    if (IsFlushingState(audio ? mFlushingAudio : mFlushingVideo)) {
1315        // We're currently attempting to flush the decoder, in order
1316        // to complete this, the decoder wants all its buffers back,
1317        // so we don't want any output buffers it sent us (from before
1318        // we initiated the flush) to be stuck in the renderer's queue.
1319
1320        ALOGV("we're still flushing the %s decoder, sending its output buffer"
1321             " right back.", audio ? "audio" : "video");
1322
1323        reply->post();
1324        return;
1325    }
1326
1327    sp<ABuffer> buffer;
1328    CHECK(msg->findBuffer("buffer", &buffer));
1329
1330    int64_t mediaTimeUs;
1331    CHECK(buffer->meta()->findInt64("timeUs", &mediaTimeUs));
1332
1333    int64_t &skipUntilMediaTimeUs =
1334        audio
1335            ? mSkipRenderingAudioUntilMediaTimeUs
1336            : mSkipRenderingVideoUntilMediaTimeUs;
1337
1338    if (skipUntilMediaTimeUs >= 0) {
1339
1340        if (mediaTimeUs < skipUntilMediaTimeUs) {
1341            ALOGV("dropping %s buffer at time %lld as requested.",
1342                 audio ? "audio" : "video",
1343                 mediaTimeUs);
1344
1345            reply->post();
1346            return;
1347        }
1348
1349        skipUntilMediaTimeUs = -1;
1350    }
1351
1352    if (!audio && mCCDecoder->isSelected()) {
1353        mCCDecoder->display(mediaTimeUs);
1354    }
1355
1356    mRenderer->queueBuffer(audio, buffer, reply);
1357}
1358
1359void NuPlayer::notifyListener(int msg, int ext1, int ext2, const Parcel *in) {
1360    if (mDriver == NULL) {
1361        return;
1362    }
1363
1364    sp<NuPlayerDriver> driver = mDriver.promote();
1365
1366    if (driver == NULL) {
1367        return;
1368    }
1369
1370    driver->notifyListener(msg, ext1, ext2, in);
1371}
1372
1373void NuPlayer::flushDecoder(bool audio, bool needShutdown) {
1374    ALOGV("[%s] flushDecoder needShutdown=%d",
1375          audio ? "audio" : "video", needShutdown);
1376
1377    if ((audio && mAudioDecoder == NULL) || (!audio && mVideoDecoder == NULL)) {
1378        ALOGI("flushDecoder %s without decoder present",
1379             audio ? "audio" : "video");
1380    }
1381
1382    // Make sure we don't continue to scan sources until we finish flushing.
1383    ++mScanSourcesGeneration;
1384    mScanSourcesPending = false;
1385
1386    (audio ? mAudioDecoder : mVideoDecoder)->signalFlush();
1387    mRenderer->flush(audio);
1388
1389    FlushStatus newStatus =
1390        needShutdown ? FLUSHING_DECODER_SHUTDOWN : FLUSHING_DECODER;
1391
1392    if (audio) {
1393        CHECK(mFlushingAudio == NONE
1394                || mFlushingAudio == AWAITING_DISCONTINUITY);
1395
1396        mFlushingAudio = newStatus;
1397
1398        if (mFlushingVideo == NONE) {
1399            mFlushingVideo = (mVideoDecoder != NULL)
1400                ? AWAITING_DISCONTINUITY
1401                : FLUSHED;
1402        }
1403    } else {
1404        CHECK(mFlushingVideo == NONE
1405                || mFlushingVideo == AWAITING_DISCONTINUITY);
1406
1407        mFlushingVideo = newStatus;
1408
1409        if (mFlushingAudio == NONE) {
1410            mFlushingAudio = (mAudioDecoder != NULL)
1411                ? AWAITING_DISCONTINUITY
1412                : FLUSHED;
1413        }
1414    }
1415}
1416
1417sp<AMessage> NuPlayer::Source::getFormat(bool audio) {
1418    sp<MetaData> meta = getFormatMeta(audio);
1419
1420    if (meta == NULL) {
1421        return NULL;
1422    }
1423
1424    sp<AMessage> msg = new AMessage;
1425
1426    if(convertMetaDataToMessage(meta, &msg) == OK) {
1427        return msg;
1428    }
1429    return NULL;
1430}
1431
1432status_t NuPlayer::setVideoScalingMode(int32_t mode) {
1433    mVideoScalingMode = mode;
1434    if (mNativeWindow != NULL) {
1435        status_t ret = native_window_set_scaling_mode(
1436                mNativeWindow->getNativeWindow().get(), mVideoScalingMode);
1437        if (ret != OK) {
1438            ALOGE("Failed to set scaling mode (%d): %s",
1439                -ret, strerror(-ret));
1440            return ret;
1441        }
1442    }
1443    return OK;
1444}
1445
1446status_t NuPlayer::getTrackInfo(Parcel* reply) const {
1447    sp<AMessage> msg = new AMessage(kWhatGetTrackInfo, id());
1448    msg->setPointer("reply", reply);
1449
1450    sp<AMessage> response;
1451    status_t err = msg->postAndAwaitResponse(&response);
1452    return err;
1453}
1454
1455status_t NuPlayer::selectTrack(size_t trackIndex, bool select) {
1456    sp<AMessage> msg = new AMessage(kWhatSelectTrack, id());
1457    msg->setSize("trackIndex", trackIndex);
1458    msg->setInt32("select", select);
1459
1460    sp<AMessage> response;
1461    status_t err = msg->postAndAwaitResponse(&response);
1462
1463    if (err != OK) {
1464        return err;
1465    }
1466
1467    if (!response->findInt32("err", &err)) {
1468        err = OK;
1469    }
1470
1471    return err;
1472}
1473
1474void NuPlayer::schedulePollDuration() {
1475    sp<AMessage> msg = new AMessage(kWhatPollDuration, id());
1476    msg->setInt32("generation", mPollDurationGeneration);
1477    msg->post();
1478}
1479
1480void NuPlayer::cancelPollDuration() {
1481    ++mPollDurationGeneration;
1482}
1483
1484void NuPlayer::processDeferredActions() {
1485    while (!mDeferredActions.empty()) {
1486        // We won't execute any deferred actions until we're no longer in
1487        // an intermediate state, i.e. one more more decoders are currently
1488        // flushing or shutting down.
1489
1490        if (mRenderer != NULL) {
1491            // There's an edge case where the renderer owns all output
1492            // buffers and is paused, therefore the decoder will not read
1493            // more input data and will never encounter the matching
1494            // discontinuity. To avoid this, we resume the renderer.
1495
1496            if (mFlushingAudio == AWAITING_DISCONTINUITY
1497                    || mFlushingVideo == AWAITING_DISCONTINUITY) {
1498                mRenderer->resume();
1499            }
1500        }
1501
1502        if (mFlushingAudio != NONE || mFlushingVideo != NONE) {
1503            // We're currently flushing, postpone the reset until that's
1504            // completed.
1505
1506            ALOGV("postponing action mFlushingAudio=%d, mFlushingVideo=%d",
1507                  mFlushingAudio, mFlushingVideo);
1508
1509            break;
1510        }
1511
1512        sp<Action> action = *mDeferredActions.begin();
1513        mDeferredActions.erase(mDeferredActions.begin());
1514
1515        action->execute(this);
1516    }
1517}
1518
1519void NuPlayer::performSeek(int64_t seekTimeUs) {
1520    ALOGV("performSeek seekTimeUs=%lld us (%.2f secs)",
1521          seekTimeUs,
1522          seekTimeUs / 1E6);
1523
1524    mSource->seekTo(seekTimeUs);
1525    ++mTimedTextGeneration;
1526
1527    if (mDriver != NULL) {
1528        sp<NuPlayerDriver> driver = mDriver.promote();
1529        if (driver != NULL) {
1530            driver->notifyPosition(seekTimeUs);
1531            driver->notifySeekComplete();
1532        }
1533    }
1534
1535    // everything's flushed, continue playback.
1536}
1537
1538void NuPlayer::performDecoderFlush() {
1539    ALOGV("performDecoderFlush");
1540
1541    if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
1542        return;
1543    }
1544
1545    mTimeDiscontinuityPending = true;
1546
1547    if (mAudioDecoder != NULL) {
1548        flushDecoder(true /* audio */, false /* needShutdown */);
1549    }
1550
1551    if (mVideoDecoder != NULL) {
1552        flushDecoder(false /* audio */, false /* needShutdown */);
1553    }
1554}
1555
1556void NuPlayer::performDecoderShutdown(bool audio, bool video) {
1557    ALOGV("performDecoderShutdown audio=%d, video=%d", audio, video);
1558
1559    if ((!audio || mAudioDecoder == NULL)
1560            && (!video || mVideoDecoder == NULL)) {
1561        return;
1562    }
1563
1564    mTimeDiscontinuityPending = true;
1565
1566    if (mFlushingAudio == NONE && (!audio || mAudioDecoder == NULL)) {
1567        mFlushingAudio = FLUSHED;
1568    }
1569
1570    if (mFlushingVideo == NONE && (!video || mVideoDecoder == NULL)) {
1571        mFlushingVideo = FLUSHED;
1572    }
1573
1574    if (audio && mAudioDecoder != NULL) {
1575        flushDecoder(true /* audio */, true /* needShutdown */);
1576    }
1577
1578    if (video && mVideoDecoder != NULL) {
1579        flushDecoder(false /* audio */, true /* needShutdown */);
1580    }
1581}
1582
1583void NuPlayer::performReset() {
1584    ALOGV("performReset");
1585
1586    CHECK(mAudioDecoder == NULL);
1587    CHECK(mVideoDecoder == NULL);
1588
1589    cancelPollDuration();
1590
1591    ++mScanSourcesGeneration;
1592    mScanSourcesPending = false;
1593
1594    if (mRendererLooper != NULL) {
1595        if (mRenderer != NULL) {
1596            mRendererLooper->unregisterHandler(mRenderer->id());
1597        }
1598        mRendererLooper->stop();
1599        mRendererLooper.clear();
1600    }
1601    mRenderer.clear();
1602
1603    if (mSource != NULL) {
1604        mSource->stop();
1605
1606        looper()->unregisterHandler(mSource->id());
1607
1608        mSource.clear();
1609    }
1610
1611    if (mDriver != NULL) {
1612        sp<NuPlayerDriver> driver = mDriver.promote();
1613        if (driver != NULL) {
1614            driver->notifyResetComplete();
1615        }
1616    }
1617
1618    mStarted = false;
1619}
1620
1621void NuPlayer::performScanSources() {
1622    ALOGV("performScanSources");
1623
1624    if (!mStarted) {
1625        return;
1626    }
1627
1628    if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
1629        postScanSources();
1630    }
1631}
1632
1633void NuPlayer::performSetSurface(const sp<NativeWindowWrapper> &wrapper) {
1634    ALOGV("performSetSurface");
1635
1636    mNativeWindow = wrapper;
1637
1638    // XXX - ignore error from setVideoScalingMode for now
1639    setVideoScalingMode(mVideoScalingMode);
1640
1641    if (mDriver != NULL) {
1642        sp<NuPlayerDriver> driver = mDriver.promote();
1643        if (driver != NULL) {
1644            driver->notifySetSurfaceComplete();
1645        }
1646    }
1647}
1648
1649void NuPlayer::onSourceNotify(const sp<AMessage> &msg) {
1650    int32_t what;
1651    CHECK(msg->findInt32("what", &what));
1652
1653    switch (what) {
1654        case Source::kWhatPrepared:
1655        {
1656            if (mSource == NULL) {
1657                // This is a stale notification from a source that was
1658                // asynchronously preparing when the client called reset().
1659                // We handled the reset, the source is gone.
1660                break;
1661            }
1662
1663            int32_t err;
1664            CHECK(msg->findInt32("err", &err));
1665
1666            sp<NuPlayerDriver> driver = mDriver.promote();
1667            if (driver != NULL) {
1668                // notify duration first, so that it's definitely set when
1669                // the app received the "prepare complete" callback.
1670                int64_t durationUs;
1671                if (mSource->getDuration(&durationUs) == OK) {
1672                    driver->notifyDuration(durationUs);
1673                }
1674                driver->notifyPrepareCompleted(err);
1675            }
1676
1677            break;
1678        }
1679
1680        case Source::kWhatFlagsChanged:
1681        {
1682            uint32_t flags;
1683            CHECK(msg->findInt32("flags", (int32_t *)&flags));
1684
1685            sp<NuPlayerDriver> driver = mDriver.promote();
1686            if (driver != NULL) {
1687                driver->notifyFlagsChanged(flags);
1688            }
1689
1690            if ((mSourceFlags & Source::FLAG_DYNAMIC_DURATION)
1691                    && (!(flags & Source::FLAG_DYNAMIC_DURATION))) {
1692                cancelPollDuration();
1693            } else if (!(mSourceFlags & Source::FLAG_DYNAMIC_DURATION)
1694                    && (flags & Source::FLAG_DYNAMIC_DURATION)
1695                    && (mAudioDecoder != NULL || mVideoDecoder != NULL)) {
1696                schedulePollDuration();
1697            }
1698
1699            mSourceFlags = flags;
1700            break;
1701        }
1702
1703        case Source::kWhatVideoSizeChanged:
1704        {
1705            int32_t width, height;
1706            CHECK(msg->findInt32("width", &width));
1707            CHECK(msg->findInt32("height", &height));
1708
1709            notifyListener(MEDIA_SET_VIDEO_SIZE, width, height);
1710            break;
1711        }
1712
1713        case Source::kWhatBufferingStart:
1714        {
1715            notifyListener(MEDIA_INFO, MEDIA_INFO_BUFFERING_START, 0);
1716            break;
1717        }
1718
1719        case Source::kWhatBufferingEnd:
1720        {
1721            notifyListener(MEDIA_INFO, MEDIA_INFO_BUFFERING_END, 0);
1722            break;
1723        }
1724
1725        case Source::kWhatSubtitleData:
1726        {
1727            sp<ABuffer> buffer;
1728            CHECK(msg->findBuffer("buffer", &buffer));
1729
1730            sendSubtitleData(buffer, 0 /* baseIndex */);
1731            break;
1732        }
1733
1734        case Source::kWhatTimedTextData:
1735        {
1736            int32_t generation;
1737            if (msg->findInt32("generation", &generation)
1738                    && generation != mTimedTextGeneration) {
1739                break;
1740            }
1741
1742            sp<ABuffer> buffer;
1743            CHECK(msg->findBuffer("buffer", &buffer));
1744
1745            sp<NuPlayerDriver> driver = mDriver.promote();
1746            if (driver == NULL) {
1747                break;
1748            }
1749
1750            int posMs;
1751            int64_t timeUs, posUs;
1752            driver->getCurrentPosition(&posMs);
1753            posUs = posMs * 1000;
1754            CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
1755
1756            if (posUs < timeUs) {
1757                if (!msg->findInt32("generation", &generation)) {
1758                    msg->setInt32("generation", mTimedTextGeneration);
1759                }
1760                msg->post(timeUs - posUs);
1761            } else {
1762                sendTimedTextData(buffer);
1763            }
1764            break;
1765        }
1766
1767        case Source::kWhatQueueDecoderShutdown:
1768        {
1769            int32_t audio, video;
1770            CHECK(msg->findInt32("audio", &audio));
1771            CHECK(msg->findInt32("video", &video));
1772
1773            sp<AMessage> reply;
1774            CHECK(msg->findMessage("reply", &reply));
1775
1776            queueDecoderShutdown(audio, video, reply);
1777            break;
1778        }
1779
1780        default:
1781            TRESPASS();
1782    }
1783}
1784
1785void NuPlayer::onClosedCaptionNotify(const sp<AMessage> &msg) {
1786    int32_t what;
1787    CHECK(msg->findInt32("what", &what));
1788
1789    switch (what) {
1790        case NuPlayer::CCDecoder::kWhatClosedCaptionData:
1791        {
1792            sp<ABuffer> buffer;
1793            CHECK(msg->findBuffer("buffer", &buffer));
1794
1795            size_t inbandTracks = 0;
1796            if (mSource != NULL) {
1797                inbandTracks = mSource->getTrackCount();
1798            }
1799
1800            sendSubtitleData(buffer, inbandTracks);
1801            break;
1802        }
1803
1804        case NuPlayer::CCDecoder::kWhatTrackAdded:
1805        {
1806            notifyListener(MEDIA_INFO, MEDIA_INFO_METADATA_UPDATE, 0);
1807
1808            break;
1809        }
1810
1811        default:
1812            TRESPASS();
1813    }
1814
1815
1816}
1817
1818void NuPlayer::sendSubtitleData(const sp<ABuffer> &buffer, int32_t baseIndex) {
1819    int32_t trackIndex;
1820    int64_t timeUs, durationUs;
1821    CHECK(buffer->meta()->findInt32("trackIndex", &trackIndex));
1822    CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
1823    CHECK(buffer->meta()->findInt64("durationUs", &durationUs));
1824
1825    Parcel in;
1826    in.writeInt32(trackIndex + baseIndex);
1827    in.writeInt64(timeUs);
1828    in.writeInt64(durationUs);
1829    in.writeInt32(buffer->size());
1830    in.writeInt32(buffer->size());
1831    in.write(buffer->data(), buffer->size());
1832
1833    notifyListener(MEDIA_SUBTITLE_DATA, 0, 0, &in);
1834}
1835
1836void NuPlayer::sendTimedTextData(const sp<ABuffer> &buffer) {
1837    const void *data;
1838    size_t size = 0;
1839    int64_t timeUs;
1840    int32_t flag = TextDescriptions::LOCAL_DESCRIPTIONS;
1841
1842    AString mime;
1843    CHECK(buffer->meta()->findString("mime", &mime));
1844    CHECK(strcasecmp(mime.c_str(), MEDIA_MIMETYPE_TEXT_3GPP) == 0);
1845
1846    data = buffer->data();
1847    size = buffer->size();
1848
1849    Parcel parcel;
1850    if (size > 0) {
1851        CHECK(buffer->meta()->findInt64("timeUs", &timeUs));
1852        flag |= TextDescriptions::IN_BAND_TEXT_3GPP;
1853        TextDescriptions::getParcelOfDescriptions(
1854                (const uint8_t *)data, size, flag, timeUs / 1000, &parcel);
1855    }
1856
1857    if ((parcel.dataSize() > 0)) {
1858        notifyListener(MEDIA_TIMED_TEXT, 0, 0, &parcel);
1859    } else {  // send an empty timed text
1860        notifyListener(MEDIA_TIMED_TEXT, 0, 0);
1861    }
1862}
1863////////////////////////////////////////////////////////////////////////////////
1864
1865void NuPlayer::Source::notifyFlagsChanged(uint32_t flags) {
1866    sp<AMessage> notify = dupNotify();
1867    notify->setInt32("what", kWhatFlagsChanged);
1868    notify->setInt32("flags", flags);
1869    notify->post();
1870}
1871
1872void NuPlayer::Source::notifyVideoSizeChanged(int32_t width, int32_t height) {
1873    sp<AMessage> notify = dupNotify();
1874    notify->setInt32("what", kWhatVideoSizeChanged);
1875    notify->setInt32("width", width);
1876    notify->setInt32("height", height);
1877    notify->post();
1878}
1879
1880void NuPlayer::Source::notifyPrepared(status_t err) {
1881    sp<AMessage> notify = dupNotify();
1882    notify->setInt32("what", kWhatPrepared);
1883    notify->setInt32("err", err);
1884    notify->post();
1885}
1886
1887void NuPlayer::Source::onMessageReceived(const sp<AMessage> & /* msg */) {
1888    TRESPASS();
1889}
1890
1891void NuPlayer::queueDecoderShutdown(
1892        bool audio, bool video, const sp<AMessage> &reply) {
1893    ALOGI("queueDecoderShutdown audio=%d, video=%d", audio, video);
1894
1895    mDeferredActions.push_back(
1896            new ShutdownDecoderAction(audio, video));
1897
1898    mDeferredActions.push_back(
1899            new SimpleAction(&NuPlayer::performScanSources));
1900
1901    mDeferredActions.push_back(new PostMessageAction(reply));
1902
1903    processDeferredActions();
1904}
1905
1906}  // namespace android
1907