NuPlayerRenderer.cpp revision 3a474aa67fc31505740526dd249d96204c08bf79 
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 "NuPlayerRenderer"
19#include <utils/Log.h>
20
21#include "NuPlayerRenderer.h"
22
23#include <media/stagefright/foundation/ABuffer.h>
24#include <media/stagefright/foundation/ADebug.h>
25#include <media/stagefright/foundation/AMessage.h>
26#include <media/stagefright/foundation/AUtils.h>
27#include <media/stagefright/foundation/AWakeLock.h>
28#include <media/stagefright/MediaClock.h>
29#include <media/stagefright/MediaErrors.h>
30#include <media/stagefright/MetaData.h>
31#include <media/stagefright/Utils.h>
32
33#include <VideoFrameScheduler.h>
34
35#include <inttypes.h>
36
37namespace android {
38
39// Maximum time in paused state when offloading audio decompression. When elapsed, the AudioSink
40// is closed to allow the audio DSP to power down.
41static const int64_t kOffloadPauseMaxUs = 10000000ll;
42
43// static
44const NuPlayer::Renderer::PcmInfo NuPlayer::Renderer::AUDIO_PCMINFO_INITIALIZER = {
45        AUDIO_CHANNEL_NONE,
46        AUDIO_OUTPUT_FLAG_NONE,
47        AUDIO_FORMAT_INVALID,
48        0, // mNumChannels
49        0 // mSampleRate
50};
51
52// static
53const int64_t NuPlayer::Renderer::kMinPositionUpdateDelayUs = 100000ll;
54
55NuPlayer::Renderer::Renderer(
56        const sp<MediaPlayerBase::AudioSink> &sink,
57        const sp<AMessage> &notify,
58        uint32_t flags)
59    : mAudioSink(sink),
60      mNotify(notify),
61      mFlags(flags),
62      mNumFramesWritten(0),
63      mDrainAudioQueuePending(false),
64      mDrainVideoQueuePending(false),
65      mAudioQueueGeneration(0),
66      mVideoQueueGeneration(0),
67      mAudioDrainGeneration(0),
68      mVideoDrainGeneration(0),
69      mPlaybackSettings(AUDIO_PLAYBACK_RATE_DEFAULT),
70      mAudioFirstAnchorTimeMediaUs(-1),
71      mAnchorTimeMediaUs(-1),
72      mAnchorNumFramesWritten(-1),
73      mVideoLateByUs(0ll),
74      mHasAudio(false),
75      mHasVideo(false),
76      mNotifyCompleteAudio(false),
77      mNotifyCompleteVideo(false),
78      mSyncQueues(false),
79      mPaused(false),
80      mVideoSampleReceived(false),
81      mVideoRenderingStarted(false),
82      mVideoRenderingStartGeneration(0),
83      mAudioRenderingStartGeneration(0),
84      mAudioOffloadPauseTimeoutGeneration(0),
85      mAudioOffloadTornDown(false),
86      mCurrentOffloadInfo(AUDIO_INFO_INITIALIZER),
87      mCurrentPcmInfo(AUDIO_PCMINFO_INITIALIZER),
88      mTotalBuffersQueued(0),
89      mLastAudioBufferDrained(0),
90      mWakeLock(new AWakeLock()) {
91    mMediaClock = new MediaClock;
92    mPlaybackRate = mPlaybackSettings.mSpeed;
93    mMediaClock->setPlaybackRate(mPlaybackRate);
94}
95
96NuPlayer::Renderer::~Renderer() {
97    if (offloadingAudio()) {
98        mAudioSink->stop();
99        mAudioSink->flush();
100        mAudioSink->close();
101    }
102}
103
104void NuPlayer::Renderer::queueBuffer(
105        bool audio,
106        const sp<ABuffer> &buffer,
107        const sp<AMessage> &notifyConsumed) {
108    sp<AMessage> msg = new AMessage(kWhatQueueBuffer, this);
109    msg->setInt32("queueGeneration", getQueueGeneration(audio));
110    msg->setInt32("audio", static_cast<int32_t>(audio));
111    msg->setBuffer("buffer", buffer);
112    msg->setMessage("notifyConsumed", notifyConsumed);
113    msg->post();
114}
115
116void NuPlayer::Renderer::queueEOS(bool audio, status_t finalResult) {
117    CHECK_NE(finalResult, (status_t)OK);
118
119    sp<AMessage> msg = new AMessage(kWhatQueueEOS, this);
120    msg->setInt32("queueGeneration", getQueueGeneration(audio));
121    msg->setInt32("audio", static_cast<int32_t>(audio));
122    msg->setInt32("finalResult", finalResult);
123    msg->post();
124}
125
126status_t NuPlayer::Renderer::setPlaybackSettings(const AudioPlaybackRate &rate) {
127    sp<AMessage> msg = new AMessage(kWhatConfigPlayback, this);
128    writeToAMessage(msg, rate);
129    sp<AMessage> response;
130    status_t err = msg->postAndAwaitResponse(&response);
131    if (err == OK && response != NULL) {
132        CHECK(response->findInt32("err", &err));
133    }
134    return err;
135}
136
137status_t NuPlayer::Renderer::onConfigPlayback(const AudioPlaybackRate &rate /* sanitized */) {
138    if (rate.mSpeed == 0.f) {
139        onPause();
140        // don't call audiosink's setPlaybackRate if pausing, as pitch does not
141        // have to correspond to the any non-0 speed (e.g old speed). Keep
142        // settings nonetheless, using the old speed, in case audiosink changes.
143        AudioPlaybackRate newRate = rate;
144        newRate.mSpeed = mPlaybackSettings.mSpeed;
145        mPlaybackSettings = newRate;
146        return OK;
147    }
148
149    if (mAudioSink != NULL) {
150        status_t err = mAudioSink->setPlaybackRate(rate);
151        if (err != OK) {
152            return err;
153        }
154    }
155    mPlaybackSettings = rate;
156    mPlaybackRate = rate.mSpeed;
157    mMediaClock->setPlaybackRate(mPlaybackRate);
158    return OK;
159}
160
161status_t NuPlayer::Renderer::getPlaybackSettings(AudioPlaybackRate *rate /* nonnull */) {
162    sp<AMessage> msg = new AMessage(kWhatGetPlaybackSettings, this);
163    sp<AMessage> response;
164    status_t err = msg->postAndAwaitResponse(&response);
165    if (err == OK && response != NULL) {
166        CHECK(response->findInt32("err", &err));
167        if (err == OK) {
168            readFromAMessage(response, rate);
169        }
170    }
171    return err;
172}
173
174status_t NuPlayer::Renderer::onGetPlaybackSettings(AudioPlaybackRate *rate /* nonnull */) {
175    if (mAudioSink != NULL) {
176        status_t err = mAudioSink->getPlaybackRate(rate);
177        if (err == OK) {
178            if (!isAudioPlaybackRateEqual(*rate, mPlaybackSettings)) {
179                ALOGW("correcting mismatch in internal/external playback rate");
180            }
181            // get playback settings used by audiosink, as it may be
182            // slightly off due to audiosink not taking small changes.
183            mPlaybackSettings = *rate;
184            if (mPaused) {
185                rate->mSpeed = 0.f;
186            }
187        }
188        return err;
189    }
190    *rate = mPlaybackSettings;
191    return OK;
192}
193
194status_t NuPlayer::Renderer::setSyncSettings(const AVSyncSettings &sync, float videoFpsHint) {
195    sp<AMessage> msg = new AMessage(kWhatConfigSync, this);
196    writeToAMessage(msg, sync, videoFpsHint);
197    sp<AMessage> response;
198    status_t err = msg->postAndAwaitResponse(&response);
199    if (err == OK && response != NULL) {
200        CHECK(response->findInt32("err", &err));
201    }
202    return err;
203}
204
205status_t NuPlayer::Renderer::onConfigSync(const AVSyncSettings &sync, float videoFpsHint __unused) {
206    if (sync.mSource != AVSYNC_SOURCE_DEFAULT) {
207        return BAD_VALUE;
208    }
209    // TODO: support sync sources
210    return INVALID_OPERATION;
211}
212
213status_t NuPlayer::Renderer::getSyncSettings(AVSyncSettings *sync, float *videoFps) {
214    sp<AMessage> msg = new AMessage(kWhatGetSyncSettings, this);
215    sp<AMessage> response;
216    status_t err = msg->postAndAwaitResponse(&response);
217    if (err == OK && response != NULL) {
218        CHECK(response->findInt32("err", &err));
219        if (err == OK) {
220            readFromAMessage(response, sync, videoFps);
221        }
222    }
223    return err;
224}
225
226status_t NuPlayer::Renderer::onGetSyncSettings(
227        AVSyncSettings *sync /* nonnull */, float *videoFps /* nonnull */) {
228    *sync = mSyncSettings;
229    *videoFps = -1.f;
230    return OK;
231}
232
233void NuPlayer::Renderer::flush(bool audio, bool notifyComplete) {
234    {
235        Mutex::Autolock autoLock(mLock);
236        if (audio) {
237            mNotifyCompleteAudio |= notifyComplete;
238            ++mAudioQueueGeneration;
239            ++mAudioDrainGeneration;
240        } else {
241            mNotifyCompleteVideo |= notifyComplete;
242            ++mVideoQueueGeneration;
243            ++mVideoDrainGeneration;
244        }
245
246        clearAnchorTime_l();
247        clearAudioFirstAnchorTime_l();
248        mVideoLateByUs = 0;
249        mSyncQueues = false;
250    }
251
252    sp<AMessage> msg = new AMessage(kWhatFlush, this);
253    msg->setInt32("audio", static_cast<int32_t>(audio));
254    msg->post();
255}
256
257void NuPlayer::Renderer::signalTimeDiscontinuity() {
258}
259
260void NuPlayer::Renderer::signalDisableOffloadAudio() {
261    (new AMessage(kWhatDisableOffloadAudio, this))->post();
262}
263
264void NuPlayer::Renderer::signalEnableOffloadAudio() {
265    (new AMessage(kWhatEnableOffloadAudio, this))->post();
266}
267
268void NuPlayer::Renderer::pause() {
269    (new AMessage(kWhatPause, this))->post();
270}
271
272void NuPlayer::Renderer::resume() {
273    (new AMessage(kWhatResume, this))->post();
274}
275
276void NuPlayer::Renderer::setVideoFrameRate(float fps) {
277    sp<AMessage> msg = new AMessage(kWhatSetVideoFrameRate, this);
278    msg->setFloat("frame-rate", fps);
279    msg->post();
280}
281
282// Called on any threads.
283status_t NuPlayer::Renderer::getCurrentPosition(int64_t *mediaUs) {
284    return mMediaClock->getMediaTime(ALooper::GetNowUs(), mediaUs);
285}
286
287void NuPlayer::Renderer::clearAudioFirstAnchorTime_l() {
288    mAudioFirstAnchorTimeMediaUs = -1;
289    mMediaClock->setStartingTimeMedia(-1);
290}
291
292void NuPlayer::Renderer::setAudioFirstAnchorTimeIfNeeded_l(int64_t mediaUs) {
293    if (mAudioFirstAnchorTimeMediaUs == -1) {
294        mAudioFirstAnchorTimeMediaUs = mediaUs;
295        mMediaClock->setStartingTimeMedia(mediaUs);
296    }
297}
298
299void NuPlayer::Renderer::clearAnchorTime_l() {
300    mMediaClock->clearAnchor();
301    mAnchorTimeMediaUs = -1;
302    mAnchorNumFramesWritten = -1;
303}
304
305void NuPlayer::Renderer::setVideoLateByUs(int64_t lateUs) {
306    Mutex::Autolock autoLock(mLock);
307    mVideoLateByUs = lateUs;
308}
309
310int64_t NuPlayer::Renderer::getVideoLateByUs() {
311    Mutex::Autolock autoLock(mLock);
312    return mVideoLateByUs;
313}
314
315status_t NuPlayer::Renderer::openAudioSink(
316        const sp<AMessage> &format,
317        bool offloadOnly,
318        bool hasVideo,
319        uint32_t flags,
320        bool *isOffloaded) {
321    sp<AMessage> msg = new AMessage(kWhatOpenAudioSink, this);
322    msg->setMessage("format", format);
323    msg->setInt32("offload-only", offloadOnly);
324    msg->setInt32("has-video", hasVideo);
325    msg->setInt32("flags", flags);
326
327    sp<AMessage> response;
328    msg->postAndAwaitResponse(&response);
329
330    int32_t err;
331    if (!response->findInt32("err", &err)) {
332        err = INVALID_OPERATION;
333    } else if (err == OK && isOffloaded != NULL) {
334        int32_t offload;
335        CHECK(response->findInt32("offload", &offload));
336        *isOffloaded = (offload != 0);
337    }
338    return err;
339}
340
341void NuPlayer::Renderer::closeAudioSink() {
342    sp<AMessage> msg = new AMessage(kWhatCloseAudioSink, this);
343
344    sp<AMessage> response;
345    msg->postAndAwaitResponse(&response);
346}
347
348void NuPlayer::Renderer::onMessageReceived(const sp<AMessage> &msg) {
349    switch (msg->what()) {
350        case kWhatOpenAudioSink:
351        {
352            sp<AMessage> format;
353            CHECK(msg->findMessage("format", &format));
354
355            int32_t offloadOnly;
356            CHECK(msg->findInt32("offload-only", &offloadOnly));
357
358            int32_t hasVideo;
359            CHECK(msg->findInt32("has-video", &hasVideo));
360
361            uint32_t flags;
362            CHECK(msg->findInt32("flags", (int32_t *)&flags));
363
364            status_t err = onOpenAudioSink(format, offloadOnly, hasVideo, flags);
365
366            sp<AMessage> response = new AMessage;
367            response->setInt32("err", err);
368            response->setInt32("offload", offloadingAudio());
369
370            sp<AReplyToken> replyID;
371            CHECK(msg->senderAwaitsResponse(&replyID));
372            response->postReply(replyID);
373
374            break;
375        }
376
377        case kWhatCloseAudioSink:
378        {
379            sp<AReplyToken> replyID;
380            CHECK(msg->senderAwaitsResponse(&replyID));
381
382            onCloseAudioSink();
383
384            sp<AMessage> response = new AMessage;
385            response->postReply(replyID);
386            break;
387        }
388
389        case kWhatStopAudioSink:
390        {
391            mAudioSink->stop();
392            break;
393        }
394
395        case kWhatDrainAudioQueue:
396        {
397            int32_t generation;
398            CHECK(msg->findInt32("drainGeneration", &generation));
399            if (generation != getDrainGeneration(true /* audio */)) {
400                break;
401            }
402
403            mDrainAudioQueuePending = false;
404
405            if (onDrainAudioQueue()) {
406                uint32_t numFramesPlayed;
407                CHECK_EQ(mAudioSink->getPosition(&numFramesPlayed),
408                         (status_t)OK);
409
410                uint32_t numFramesPendingPlayout =
411                    mNumFramesWritten - numFramesPlayed;
412
413                // This is how long the audio sink will have data to
414                // play back.
415                int64_t delayUs =
416                    mAudioSink->msecsPerFrame()
417                        * numFramesPendingPlayout * 1000ll;
418                if (mPlaybackRate > 1.0f) {
419                    delayUs /= mPlaybackRate;
420                }
421
422                // Let's give it more data after about half that time
423                // has elapsed.
424                Mutex::Autolock autoLock(mLock);
425                postDrainAudioQueue_l(delayUs / 2);
426            }
427            break;
428        }
429
430        case kWhatDrainVideoQueue:
431        {
432            int32_t generation;
433            CHECK(msg->findInt32("drainGeneration", &generation));
434            if (generation != getDrainGeneration(false /* audio */)) {
435                break;
436            }
437
438            mDrainVideoQueuePending = false;
439
440            onDrainVideoQueue();
441
442            postDrainVideoQueue();
443            break;
444        }
445
446        case kWhatPostDrainVideoQueue:
447        {
448            int32_t generation;
449            CHECK(msg->findInt32("drainGeneration", &generation));
450            if (generation != getDrainGeneration(false /* audio */)) {
451                break;
452            }
453
454            mDrainVideoQueuePending = false;
455            postDrainVideoQueue();
456            break;
457        }
458
459        case kWhatQueueBuffer:
460        {
461            onQueueBuffer(msg);
462            break;
463        }
464
465        case kWhatQueueEOS:
466        {
467            onQueueEOS(msg);
468            break;
469        }
470
471        case kWhatConfigPlayback:
472        {
473            sp<AReplyToken> replyID;
474            CHECK(msg->senderAwaitsResponse(&replyID));
475            AudioPlaybackRate rate;
476            readFromAMessage(msg, &rate);
477            status_t err = onConfigPlayback(rate);
478            sp<AMessage> response = new AMessage;
479            response->setInt32("err", err);
480            response->postReply(replyID);
481            break;
482        }
483
484        case kWhatGetPlaybackSettings:
485        {
486            sp<AReplyToken> replyID;
487            CHECK(msg->senderAwaitsResponse(&replyID));
488            AudioPlaybackRate rate = AUDIO_PLAYBACK_RATE_DEFAULT;
489            status_t err = onGetPlaybackSettings(&rate);
490            sp<AMessage> response = new AMessage;
491            if (err == OK) {
492                writeToAMessage(response, rate);
493            }
494            response->setInt32("err", err);
495            response->postReply(replyID);
496            break;
497        }
498
499        case kWhatConfigSync:
500        {
501            sp<AReplyToken> replyID;
502            CHECK(msg->senderAwaitsResponse(&replyID));
503            AVSyncSettings sync;
504            float videoFpsHint;
505            readFromAMessage(msg, &sync, &videoFpsHint);
506            status_t err = onConfigSync(sync, videoFpsHint);
507            sp<AMessage> response = new AMessage;
508            response->setInt32("err", err);
509            response->postReply(replyID);
510            break;
511        }
512
513        case kWhatGetSyncSettings:
514        {
515            sp<AReplyToken> replyID;
516            CHECK(msg->senderAwaitsResponse(&replyID));
517
518            ALOGV("kWhatGetSyncSettings");
519            AVSyncSettings sync;
520            float videoFps = -1.f;
521            status_t err = onGetSyncSettings(&sync, &videoFps);
522            sp<AMessage> response = new AMessage;
523            if (err == OK) {
524                writeToAMessage(response, sync, videoFps);
525            }
526            response->setInt32("err", err);
527            response->postReply(replyID);
528            break;
529        }
530
531        case kWhatFlush:
532        {
533            onFlush(msg);
534            break;
535        }
536
537        case kWhatDisableOffloadAudio:
538        {
539            onDisableOffloadAudio();
540            break;
541        }
542
543        case kWhatEnableOffloadAudio:
544        {
545            onEnableOffloadAudio();
546            break;
547        }
548
549        case kWhatPause:
550        {
551            onPause();
552            break;
553        }
554
555        case kWhatResume:
556        {
557            onResume();
558            break;
559        }
560
561        case kWhatSetVideoFrameRate:
562        {
563            float fps;
564            CHECK(msg->findFloat("frame-rate", &fps));
565            onSetVideoFrameRate(fps);
566            break;
567        }
568
569        case kWhatAudioOffloadTearDown:
570        {
571            onAudioOffloadTearDown(kDueToError);
572            break;
573        }
574
575        case kWhatAudioOffloadPauseTimeout:
576        {
577            int32_t generation;
578            CHECK(msg->findInt32("drainGeneration", &generation));
579            if (generation != mAudioOffloadPauseTimeoutGeneration) {
580                break;
581            }
582            ALOGV("Audio Offload tear down due to pause timeout.");
583            onAudioOffloadTearDown(kDueToTimeout);
584            mWakeLock->release();
585            break;
586        }
587
588        default:
589            TRESPASS();
590            break;
591    }
592}
593
594void NuPlayer::Renderer::postDrainAudioQueue_l(int64_t delayUs) {
595    if (mDrainAudioQueuePending || mSyncQueues || mPaused
596            || offloadingAudio()) {
597        return;
598    }
599
600    if (mAudioQueue.empty()) {
601        return;
602    }
603
604    mDrainAudioQueuePending = true;
605    sp<AMessage> msg = new AMessage(kWhatDrainAudioQueue, this);
606    msg->setInt32("drainGeneration", mAudioDrainGeneration);
607    msg->post(delayUs);
608}
609
610void NuPlayer::Renderer::prepareForMediaRenderingStart_l() {
611    mAudioRenderingStartGeneration = mAudioDrainGeneration;
612    mVideoRenderingStartGeneration = mVideoDrainGeneration;
613}
614
615void NuPlayer::Renderer::notifyIfMediaRenderingStarted_l() {
616    if (mVideoRenderingStartGeneration == mVideoDrainGeneration &&
617        mAudioRenderingStartGeneration == mAudioDrainGeneration) {
618        mVideoRenderingStartGeneration = -1;
619        mAudioRenderingStartGeneration = -1;
620
621        sp<AMessage> notify = mNotify->dup();
622        notify->setInt32("what", kWhatMediaRenderingStart);
623        notify->post();
624    }
625}
626
627// static
628size_t NuPlayer::Renderer::AudioSinkCallback(
629        MediaPlayerBase::AudioSink * /* audioSink */,
630        void *buffer,
631        size_t size,
632        void *cookie,
633        MediaPlayerBase::AudioSink::cb_event_t event) {
634    NuPlayer::Renderer *me = (NuPlayer::Renderer *)cookie;
635
636    switch (event) {
637        case MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER:
638        {
639            return me->fillAudioBuffer(buffer, size);
640            break;
641        }
642
643        case MediaPlayerBase::AudioSink::CB_EVENT_STREAM_END:
644        {
645            me->notifyEOS(true /* audio */, ERROR_END_OF_STREAM);
646            break;
647        }
648
649        case MediaPlayerBase::AudioSink::CB_EVENT_TEAR_DOWN:
650        {
651            me->notifyAudioOffloadTearDown();
652            break;
653        }
654    }
655
656    return 0;
657}
658
659size_t NuPlayer::Renderer::fillAudioBuffer(void *buffer, size_t size) {
660    Mutex::Autolock autoLock(mLock);
661
662    if (!offloadingAudio() || mPaused) {
663        return 0;
664    }
665
666    bool hasEOS = false;
667
668    size_t sizeCopied = 0;
669    bool firstEntry = true;
670    while (sizeCopied < size && !mAudioQueue.empty()) {
671        QueueEntry *entry = &*mAudioQueue.begin();
672
673        if (entry->mBuffer == NULL) { // EOS
674            hasEOS = true;
675            mAudioQueue.erase(mAudioQueue.begin());
676            entry = NULL;
677            break;
678        }
679
680        if (firstEntry && entry->mOffset == 0) {
681            firstEntry = false;
682            int64_t mediaTimeUs;
683            CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
684            ALOGV("rendering audio at media time %.2f secs", mediaTimeUs / 1E6);
685            setAudioFirstAnchorTimeIfNeeded_l(mediaTimeUs);
686        }
687
688        size_t copy = entry->mBuffer->size() - entry->mOffset;
689        size_t sizeRemaining = size - sizeCopied;
690        if (copy > sizeRemaining) {
691            copy = sizeRemaining;
692        }
693
694        memcpy((char *)buffer + sizeCopied,
695               entry->mBuffer->data() + entry->mOffset,
696               copy);
697
698        entry->mOffset += copy;
699        if (entry->mOffset == entry->mBuffer->size()) {
700            entry->mNotifyConsumed->post();
701            mAudioQueue.erase(mAudioQueue.begin());
702            entry = NULL;
703        }
704        sizeCopied += copy;
705
706        notifyIfMediaRenderingStarted_l();
707    }
708
709    if (mAudioFirstAnchorTimeMediaUs >= 0) {
710        int64_t nowUs = ALooper::GetNowUs();
711        int64_t nowMediaUs =
712            mAudioFirstAnchorTimeMediaUs + getPlayedOutAudioDurationUs(nowUs);
713        // we don't know how much data we are queueing for offloaded tracks.
714        mMediaClock->updateAnchor(nowMediaUs, nowUs, INT64_MAX);
715    }
716
717    if (hasEOS) {
718        (new AMessage(kWhatStopAudioSink, this))->post();
719    }
720
721    return sizeCopied;
722}
723
724bool NuPlayer::Renderer::onDrainAudioQueue() {
725    // TODO: This call to getPosition checks if AudioTrack has been created
726    // in AudioSink before draining audio. If AudioTrack doesn't exist, then
727    // CHECKs on getPosition will fail.
728    // We still need to figure out why AudioTrack is not created when
729    // this function is called. One possible reason could be leftover
730    // audio. Another possible place is to check whether decoder
731    // has received INFO_FORMAT_CHANGED as the first buffer since
732    // AudioSink is opened there, and possible interactions with flush
733    // immediately after start. Investigate error message
734    // "vorbis_dsp_synthesis returned -135", along with RTSP.
735    uint32_t numFramesPlayed;
736    if (mAudioSink->getPosition(&numFramesPlayed) != OK) {
737        return false;
738    }
739
740#if 0
741    ssize_t numFramesAvailableToWrite =
742        mAudioSink->frameCount() - (mNumFramesWritten - numFramesPlayed);
743
744    if (numFramesAvailableToWrite == mAudioSink->frameCount()) {
745        ALOGI("audio sink underrun");
746    } else {
747        ALOGV("audio queue has %d frames left to play",
748             mAudioSink->frameCount() - numFramesAvailableToWrite);
749    }
750#endif
751
752    while (!mAudioQueue.empty()) {
753        QueueEntry *entry = &*mAudioQueue.begin();
754
755        mLastAudioBufferDrained = entry->mBufferOrdinal;
756
757        if (entry->mBuffer == NULL) {
758            // EOS
759            int64_t postEOSDelayUs = 0;
760            if (mAudioSink->needsTrailingPadding()) {
761                postEOSDelayUs = getPendingAudioPlayoutDurationUs(ALooper::GetNowUs());
762            }
763            notifyEOS(true /* audio */, entry->mFinalResult, postEOSDelayUs);
764
765            mAudioQueue.erase(mAudioQueue.begin());
766            entry = NULL;
767            if (mAudioSink->needsTrailingPadding()) {
768                // If we're not in gapless playback (i.e. through setNextPlayer), we
769                // need to stop the track here, because that will play out the last
770                // little bit at the end of the file. Otherwise short files won't play.
771                mAudioSink->stop();
772                mNumFramesWritten = 0;
773            }
774            return false;
775        }
776
777        // ignore 0-sized buffer which could be EOS marker with no data
778        if (entry->mOffset == 0 && entry->mBuffer->size() > 0) {
779            int64_t mediaTimeUs;
780            CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
781            ALOGV("rendering audio at media time %.2f secs", mediaTimeUs / 1E6);
782            onNewAudioMediaTime(mediaTimeUs);
783        }
784
785        size_t copy = entry->mBuffer->size() - entry->mOffset;
786
787        ssize_t written = mAudioSink->write(entry->mBuffer->data() + entry->mOffset,
788                                            copy, false /* blocking */);
789        if (written < 0) {
790            // An error in AudioSink write. Perhaps the AudioSink was not properly opened.
791            if (written == WOULD_BLOCK) {
792                ALOGW("AudioSink write would block when writing %zu bytes", copy);
793            } else {
794                ALOGE("AudioSink write error(%zd) when writing %zu bytes", written, copy);
795            }
796            break;
797        }
798
799        entry->mOffset += written;
800        if (entry->mOffset == entry->mBuffer->size()) {
801            entry->mNotifyConsumed->post();
802            mAudioQueue.erase(mAudioQueue.begin());
803
804            entry = NULL;
805        }
806
807        size_t copiedFrames = written / mAudioSink->frameSize();
808        mNumFramesWritten += copiedFrames;
809
810        {
811            Mutex::Autolock autoLock(mLock);
812            notifyIfMediaRenderingStarted_l();
813        }
814
815        if (written != (ssize_t)copy) {
816            // A short count was received from AudioSink::write()
817            //
818            // AudioSink write is called in non-blocking mode.
819            // It may return with a short count when:
820            //
821            // 1) Size to be copied is not a multiple of the frame size. We consider this fatal.
822            // 2) The data to be copied exceeds the available buffer in AudioSink.
823            // 3) An error occurs and data has been partially copied to the buffer in AudioSink.
824            // 4) AudioSink is an AudioCache for data retrieval, and the AudioCache is exceeded.
825
826            // (Case 1)
827            // Must be a multiple of the frame size.  If it is not a multiple of a frame size, it
828            // needs to fail, as we should not carry over fractional frames between calls.
829            CHECK_EQ(copy % mAudioSink->frameSize(), 0);
830
831            // (Case 2, 3, 4)
832            // Return early to the caller.
833            // Beware of calling immediately again as this may busy-loop if you are not careful.
834            ALOGV("AudioSink write short frame count %zd < %zu", written, copy);
835            break;
836        }
837    }
838    int64_t maxTimeMedia;
839    {
840        Mutex::Autolock autoLock(mLock);
841        maxTimeMedia =
842            mAnchorTimeMediaUs +
843                    (int64_t)(max((long long)mNumFramesWritten - mAnchorNumFramesWritten, 0LL)
844                            * 1000LL * mAudioSink->msecsPerFrame());
845    }
846    mMediaClock->updateMaxTimeMedia(maxTimeMedia);
847
848    return !mAudioQueue.empty();
849}
850
851int64_t NuPlayer::Renderer::getDurationUsIfPlayedAtSampleRate(uint32_t numFrames) {
852    int32_t sampleRate = offloadingAudio() ?
853            mCurrentOffloadInfo.sample_rate : mCurrentPcmInfo.mSampleRate;
854    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
855    return (int64_t)((int32_t)numFrames * 1000000LL / sampleRate);
856}
857
858// Calculate duration of pending samples if played at normal rate (i.e., 1.0).
859int64_t NuPlayer::Renderer::getPendingAudioPlayoutDurationUs(int64_t nowUs) {
860    int64_t writtenAudioDurationUs = getDurationUsIfPlayedAtSampleRate(mNumFramesWritten);
861    return writtenAudioDurationUs - getPlayedOutAudioDurationUs(nowUs);
862}
863
864int64_t NuPlayer::Renderer::getRealTimeUs(int64_t mediaTimeUs, int64_t nowUs) {
865    int64_t realUs;
866    if (mMediaClock->getRealTimeFor(mediaTimeUs, &realUs) != OK) {
867        // If failed to get current position, e.g. due to audio clock is
868        // not ready, then just play out video immediately without delay.
869        return nowUs;
870    }
871    return realUs;
872}
873
874void NuPlayer::Renderer::onNewAudioMediaTime(int64_t mediaTimeUs) {
875    Mutex::Autolock autoLock(mLock);
876    // TRICKY: vorbis decoder generates multiple frames with the same
877    // timestamp, so only update on the first frame with a given timestamp
878    if (mediaTimeUs == mAnchorTimeMediaUs) {
879        return;
880    }
881    setAudioFirstAnchorTimeIfNeeded_l(mediaTimeUs);
882    int64_t nowUs = ALooper::GetNowUs();
883    int64_t nowMediaUs = mediaTimeUs - getPendingAudioPlayoutDurationUs(nowUs);
884    mMediaClock->updateAnchor(nowMediaUs, nowUs, mediaTimeUs);
885    mAnchorNumFramesWritten = mNumFramesWritten;
886    mAnchorTimeMediaUs = mediaTimeUs;
887}
888
889// Called without mLock acquired.
890void NuPlayer::Renderer::postDrainVideoQueue() {
891    if (mDrainVideoQueuePending
892            || getSyncQueues()
893            || (mPaused && mVideoSampleReceived)) {
894        return;
895    }
896
897    if (mVideoQueue.empty()) {
898        return;
899    }
900
901    QueueEntry &entry = *mVideoQueue.begin();
902
903    sp<AMessage> msg = new AMessage(kWhatDrainVideoQueue, this);
904    msg->setInt32("drainGeneration", getDrainGeneration(false /* audio */));
905
906    if (entry.mBuffer == NULL) {
907        // EOS doesn't carry a timestamp.
908        msg->post();
909        mDrainVideoQueuePending = true;
910        return;
911    }
912
913    int64_t delayUs;
914    int64_t nowUs = ALooper::GetNowUs();
915    int64_t realTimeUs;
916    if (mFlags & FLAG_REAL_TIME) {
917        int64_t mediaTimeUs;
918        CHECK(entry.mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
919        realTimeUs = mediaTimeUs;
920    } else {
921        int64_t mediaTimeUs;
922        CHECK(entry.mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
923
924        {
925            Mutex::Autolock autoLock(mLock);
926            if (mAnchorTimeMediaUs < 0) {
927                mMediaClock->updateAnchor(mediaTimeUs, nowUs, mediaTimeUs);
928                mAnchorTimeMediaUs = mediaTimeUs;
929                realTimeUs = nowUs;
930            } else {
931                realTimeUs = getRealTimeUs(mediaTimeUs, nowUs);
932            }
933        }
934        if (!mHasAudio) {
935            // smooth out videos >= 10fps
936            mMediaClock->updateMaxTimeMedia(mediaTimeUs + 100000);
937        }
938
939        // Heuristics to handle situation when media time changed without a
940        // discontinuity. If we have not drained an audio buffer that was
941        // received after this buffer, repost in 10 msec. Otherwise repost
942        // in 500 msec.
943        delayUs = realTimeUs - nowUs;
944        if (delayUs > 500000) {
945            int64_t postDelayUs = 500000;
946            if (mHasAudio && (mLastAudioBufferDrained - entry.mBufferOrdinal) <= 0) {
947                postDelayUs = 10000;
948            }
949            msg->setWhat(kWhatPostDrainVideoQueue);
950            msg->post(postDelayUs);
951            mVideoScheduler->restart();
952            ALOGI("possible video time jump of %dms, retrying in %dms",
953                    (int)(delayUs / 1000), (int)(postDelayUs / 1000));
954            mDrainVideoQueuePending = true;
955            return;
956        }
957    }
958
959    realTimeUs = mVideoScheduler->schedule(realTimeUs * 1000) / 1000;
960    int64_t twoVsyncsUs = 2 * (mVideoScheduler->getVsyncPeriod() / 1000);
961
962    delayUs = realTimeUs - nowUs;
963
964    ALOGW_IF(delayUs > 500000, "unusually high delayUs: %" PRId64, delayUs);
965    // post 2 display refreshes before rendering is due
966    msg->post(delayUs > twoVsyncsUs ? delayUs - twoVsyncsUs : 0);
967
968    mDrainVideoQueuePending = true;
969}
970
971void NuPlayer::Renderer::onDrainVideoQueue() {
972    if (mVideoQueue.empty()) {
973        return;
974    }
975
976    QueueEntry *entry = &*mVideoQueue.begin();
977
978    if (entry->mBuffer == NULL) {
979        // EOS
980
981        notifyEOS(false /* audio */, entry->mFinalResult);
982
983        mVideoQueue.erase(mVideoQueue.begin());
984        entry = NULL;
985
986        setVideoLateByUs(0);
987        return;
988    }
989
990    int64_t nowUs = -1;
991    int64_t realTimeUs;
992    if (mFlags & FLAG_REAL_TIME) {
993        CHECK(entry->mBuffer->meta()->findInt64("timeUs", &realTimeUs));
994    } else {
995        int64_t mediaTimeUs;
996        CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
997
998        nowUs = ALooper::GetNowUs();
999        realTimeUs = getRealTimeUs(mediaTimeUs, nowUs);
1000    }
1001
1002    bool tooLate = false;
1003
1004    if (!mPaused) {
1005        if (nowUs == -1) {
1006            nowUs = ALooper::GetNowUs();
1007        }
1008        setVideoLateByUs(nowUs - realTimeUs);
1009        tooLate = (mVideoLateByUs > 40000);
1010
1011        if (tooLate) {
1012            ALOGV("video late by %lld us (%.2f secs)",
1013                 (long long)mVideoLateByUs, mVideoLateByUs / 1E6);
1014        } else {
1015            int64_t mediaUs = 0;
1016            mMediaClock->getMediaTime(realTimeUs, &mediaUs);
1017            ALOGV("rendering video at media time %.2f secs",
1018                    (mFlags & FLAG_REAL_TIME ? realTimeUs :
1019                    mediaUs) / 1E6);
1020        }
1021    } else {
1022        setVideoLateByUs(0);
1023        if (!mVideoSampleReceived && !mHasAudio) {
1024            // This will ensure that the first frame after a flush won't be used as anchor
1025            // when renderer is in paused state, because resume can happen any time after seek.
1026            Mutex::Autolock autoLock(mLock);
1027            clearAnchorTime_l();
1028        }
1029    }
1030
1031    entry->mNotifyConsumed->setInt64("timestampNs", realTimeUs * 1000ll);
1032    entry->mNotifyConsumed->setInt32("render", !tooLate);
1033    entry->mNotifyConsumed->post();
1034    mVideoQueue.erase(mVideoQueue.begin());
1035    entry = NULL;
1036
1037    mVideoSampleReceived = true;
1038
1039    if (!mPaused) {
1040        if (!mVideoRenderingStarted) {
1041            mVideoRenderingStarted = true;
1042            notifyVideoRenderingStart();
1043        }
1044        Mutex::Autolock autoLock(mLock);
1045        notifyIfMediaRenderingStarted_l();
1046    }
1047}
1048
1049void NuPlayer::Renderer::notifyVideoRenderingStart() {
1050    sp<AMessage> notify = mNotify->dup();
1051    notify->setInt32("what", kWhatVideoRenderingStart);
1052    notify->post();
1053}
1054
1055void NuPlayer::Renderer::notifyEOS(bool audio, status_t finalResult, int64_t delayUs) {
1056    sp<AMessage> notify = mNotify->dup();
1057    notify->setInt32("what", kWhatEOS);
1058    notify->setInt32("audio", static_cast<int32_t>(audio));
1059    notify->setInt32("finalResult", finalResult);
1060    notify->post(delayUs);
1061}
1062
1063void NuPlayer::Renderer::notifyAudioOffloadTearDown() {
1064    (new AMessage(kWhatAudioOffloadTearDown, this))->post();
1065}
1066
1067void NuPlayer::Renderer::onQueueBuffer(const sp<AMessage> &msg) {
1068    int32_t audio;
1069    CHECK(msg->findInt32("audio", &audio));
1070
1071    if (dropBufferIfStale(audio, msg)) {
1072        return;
1073    }
1074
1075    if (audio) {
1076        mHasAudio = true;
1077    } else {
1078        mHasVideo = true;
1079    }
1080
1081    if (mHasVideo) {
1082        if (mVideoScheduler == NULL) {
1083            mVideoScheduler = new VideoFrameScheduler();
1084            mVideoScheduler->init();
1085        }
1086    }
1087
1088    sp<ABuffer> buffer;
1089    CHECK(msg->findBuffer("buffer", &buffer));
1090
1091    sp<AMessage> notifyConsumed;
1092    CHECK(msg->findMessage("notifyConsumed", &notifyConsumed));
1093
1094    QueueEntry entry;
1095    entry.mBuffer = buffer;
1096    entry.mNotifyConsumed = notifyConsumed;
1097    entry.mOffset = 0;
1098    entry.mFinalResult = OK;
1099    entry.mBufferOrdinal = ++mTotalBuffersQueued;
1100
1101    if (audio) {
1102        Mutex::Autolock autoLock(mLock);
1103        mAudioQueue.push_back(entry);
1104        postDrainAudioQueue_l();
1105    } else {
1106        mVideoQueue.push_back(entry);
1107        postDrainVideoQueue();
1108    }
1109
1110    Mutex::Autolock autoLock(mLock);
1111    if (!mSyncQueues || mAudioQueue.empty() || mVideoQueue.empty()) {
1112        return;
1113    }
1114
1115    sp<ABuffer> firstAudioBuffer = (*mAudioQueue.begin()).mBuffer;
1116    sp<ABuffer> firstVideoBuffer = (*mVideoQueue.begin()).mBuffer;
1117
1118    if (firstAudioBuffer == NULL || firstVideoBuffer == NULL) {
1119        // EOS signalled on either queue.
1120        syncQueuesDone_l();
1121        return;
1122    }
1123
1124    int64_t firstAudioTimeUs;
1125    int64_t firstVideoTimeUs;
1126    CHECK(firstAudioBuffer->meta()
1127            ->findInt64("timeUs", &firstAudioTimeUs));
1128    CHECK(firstVideoBuffer->meta()
1129            ->findInt64("timeUs", &firstVideoTimeUs));
1130
1131    int64_t diff = firstVideoTimeUs - firstAudioTimeUs;
1132
1133    ALOGV("queueDiff = %.2f secs", diff / 1E6);
1134
1135    if (diff > 100000ll) {
1136        // Audio data starts More than 0.1 secs before video.
1137        // Drop some audio.
1138
1139        (*mAudioQueue.begin()).mNotifyConsumed->post();
1140        mAudioQueue.erase(mAudioQueue.begin());
1141        return;
1142    }
1143
1144    syncQueuesDone_l();
1145}
1146
1147void NuPlayer::Renderer::syncQueuesDone_l() {
1148    if (!mSyncQueues) {
1149        return;
1150    }
1151
1152    mSyncQueues = false;
1153
1154    if (!mAudioQueue.empty()) {
1155        postDrainAudioQueue_l();
1156    }
1157
1158    if (!mVideoQueue.empty()) {
1159        mLock.unlock();
1160        postDrainVideoQueue();
1161        mLock.lock();
1162    }
1163}
1164
1165void NuPlayer::Renderer::onQueueEOS(const sp<AMessage> &msg) {
1166    int32_t audio;
1167    CHECK(msg->findInt32("audio", &audio));
1168
1169    if (dropBufferIfStale(audio, msg)) {
1170        return;
1171    }
1172
1173    int32_t finalResult;
1174    CHECK(msg->findInt32("finalResult", &finalResult));
1175
1176    QueueEntry entry;
1177    entry.mOffset = 0;
1178    entry.mFinalResult = finalResult;
1179
1180    if (audio) {
1181        Mutex::Autolock autoLock(mLock);
1182        if (mAudioQueue.empty() && mSyncQueues) {
1183            syncQueuesDone_l();
1184        }
1185        mAudioQueue.push_back(entry);
1186        postDrainAudioQueue_l();
1187    } else {
1188        if (mVideoQueue.empty() && getSyncQueues()) {
1189            Mutex::Autolock autoLock(mLock);
1190            syncQueuesDone_l();
1191        }
1192        mVideoQueue.push_back(entry);
1193        postDrainVideoQueue();
1194    }
1195}
1196
1197void NuPlayer::Renderer::onFlush(const sp<AMessage> &msg) {
1198    int32_t audio, notifyComplete;
1199    CHECK(msg->findInt32("audio", &audio));
1200
1201    {
1202        Mutex::Autolock autoLock(mLock);
1203        if (audio) {
1204            notifyComplete = mNotifyCompleteAudio;
1205            mNotifyCompleteAudio = false;
1206        } else {
1207            notifyComplete = mNotifyCompleteVideo;
1208            mNotifyCompleteVideo = false;
1209        }
1210
1211        // If we're currently syncing the queues, i.e. dropping audio while
1212        // aligning the first audio/video buffer times and only one of the
1213        // two queues has data, we may starve that queue by not requesting
1214        // more buffers from the decoder. If the other source then encounters
1215        // a discontinuity that leads to flushing, we'll never find the
1216        // corresponding discontinuity on the other queue.
1217        // Therefore we'll stop syncing the queues if at least one of them
1218        // is flushed.
1219        syncQueuesDone_l();
1220        clearAnchorTime_l();
1221    }
1222
1223    ALOGV("flushing %s", audio ? "audio" : "video");
1224    if (audio) {
1225        {
1226            Mutex::Autolock autoLock(mLock);
1227            flushQueue(&mAudioQueue);
1228
1229            ++mAudioDrainGeneration;
1230            prepareForMediaRenderingStart_l();
1231
1232            if (offloadingAudio()) {
1233                clearAudioFirstAnchorTime_l();
1234            }
1235        }
1236
1237        mDrainAudioQueuePending = false;
1238
1239        if (offloadingAudio()) {
1240            mAudioSink->pause();
1241            mAudioSink->flush();
1242            mAudioSink->start();
1243        }
1244    } else {
1245        flushQueue(&mVideoQueue);
1246
1247        mDrainVideoQueuePending = false;
1248
1249        if (mVideoScheduler != NULL) {
1250            mVideoScheduler->restart();
1251        }
1252
1253        Mutex::Autolock autoLock(mLock);
1254        ++mVideoDrainGeneration;
1255        prepareForMediaRenderingStart_l();
1256    }
1257
1258    mVideoSampleReceived = false;
1259
1260    if (notifyComplete) {
1261        notifyFlushComplete(audio);
1262    }
1263}
1264
1265void NuPlayer::Renderer::flushQueue(List<QueueEntry> *queue) {
1266    while (!queue->empty()) {
1267        QueueEntry *entry = &*queue->begin();
1268
1269        if (entry->mBuffer != NULL) {
1270            entry->mNotifyConsumed->post();
1271        }
1272
1273        queue->erase(queue->begin());
1274        entry = NULL;
1275    }
1276}
1277
1278void NuPlayer::Renderer::notifyFlushComplete(bool audio) {
1279    sp<AMessage> notify = mNotify->dup();
1280    notify->setInt32("what", kWhatFlushComplete);
1281    notify->setInt32("audio", static_cast<int32_t>(audio));
1282    notify->post();
1283}
1284
1285bool NuPlayer::Renderer::dropBufferIfStale(
1286        bool audio, const sp<AMessage> &msg) {
1287    int32_t queueGeneration;
1288    CHECK(msg->findInt32("queueGeneration", &queueGeneration));
1289
1290    if (queueGeneration == getQueueGeneration(audio)) {
1291        return false;
1292    }
1293
1294    sp<AMessage> notifyConsumed;
1295    if (msg->findMessage("notifyConsumed", &notifyConsumed)) {
1296        notifyConsumed->post();
1297    }
1298
1299    return true;
1300}
1301
1302void NuPlayer::Renderer::onAudioSinkChanged() {
1303    if (offloadingAudio()) {
1304        return;
1305    }
1306    CHECK(!mDrainAudioQueuePending);
1307    mNumFramesWritten = 0;
1308    {
1309        Mutex::Autolock autoLock(mLock);
1310        mAnchorNumFramesWritten = -1;
1311    }
1312    uint32_t written;
1313    if (mAudioSink->getFramesWritten(&written) == OK) {
1314        mNumFramesWritten = written;
1315    }
1316}
1317
1318void NuPlayer::Renderer::onDisableOffloadAudio() {
1319    Mutex::Autolock autoLock(mLock);
1320    mFlags &= ~FLAG_OFFLOAD_AUDIO;
1321    ++mAudioDrainGeneration;
1322}
1323
1324void NuPlayer::Renderer::onEnableOffloadAudio() {
1325    Mutex::Autolock autoLock(mLock);
1326    mFlags |= FLAG_OFFLOAD_AUDIO;
1327    ++mAudioDrainGeneration;
1328}
1329
1330void NuPlayer::Renderer::onPause() {
1331    if (mPaused) {
1332        return;
1333    }
1334
1335    {
1336        Mutex::Autolock autoLock(mLock);
1337        ++mAudioDrainGeneration;
1338        ++mVideoDrainGeneration;
1339        prepareForMediaRenderingStart_l();
1340        mPaused = true;
1341        mMediaClock->setPlaybackRate(0.0);
1342    }
1343
1344    mDrainAudioQueuePending = false;
1345    mDrainVideoQueuePending = false;
1346
1347    if (mHasAudio) {
1348        mAudioSink->pause();
1349        startAudioOffloadPauseTimeout();
1350    }
1351
1352    ALOGV("now paused audio queue has %zu entries, video has %zu entries",
1353          mAudioQueue.size(), mVideoQueue.size());
1354}
1355
1356void NuPlayer::Renderer::onResume() {
1357    if (!mPaused) {
1358        return;
1359    }
1360
1361    if (mHasAudio) {
1362        cancelAudioOffloadPauseTimeout();
1363        mAudioSink->start();
1364    }
1365
1366    {
1367        Mutex::Autolock autoLock(mLock);
1368        mPaused = false;
1369
1370        // configure audiosink as we did not do it when pausing
1371        if (mAudioSink != NULL) {
1372            mAudioSink->setPlaybackRate(mPlaybackSettings);
1373        }
1374
1375        mMediaClock->setPlaybackRate(mPlaybackRate);
1376
1377        if (!mAudioQueue.empty()) {
1378            postDrainAudioQueue_l();
1379        }
1380    }
1381
1382    if (!mVideoQueue.empty()) {
1383        postDrainVideoQueue();
1384    }
1385}
1386
1387void NuPlayer::Renderer::onSetVideoFrameRate(float fps) {
1388    if (mVideoScheduler == NULL) {
1389        mVideoScheduler = new VideoFrameScheduler();
1390    }
1391    mVideoScheduler->init(fps);
1392}
1393
1394int32_t NuPlayer::Renderer::getQueueGeneration(bool audio) {
1395    Mutex::Autolock autoLock(mLock);
1396    return (audio ? mAudioQueueGeneration : mVideoQueueGeneration);
1397}
1398
1399int32_t NuPlayer::Renderer::getDrainGeneration(bool audio) {
1400    Mutex::Autolock autoLock(mLock);
1401    return (audio ? mAudioDrainGeneration : mVideoDrainGeneration);
1402}
1403
1404bool NuPlayer::Renderer::getSyncQueues() {
1405    Mutex::Autolock autoLock(mLock);
1406    return mSyncQueues;
1407}
1408
1409// TODO: Remove unnecessary calls to getPlayedOutAudioDurationUs()
1410// as it acquires locks and may query the audio driver.
1411//
1412// Some calls could conceivably retrieve extrapolated data instead of
1413// accessing getTimestamp() or getPosition() every time a data buffer with
1414// a media time is received.
1415//
1416// Calculate duration of played samples if played at normal rate (i.e., 1.0).
1417int64_t NuPlayer::Renderer::getPlayedOutAudioDurationUs(int64_t nowUs) {
1418    uint32_t numFramesPlayed;
1419    int64_t numFramesPlayedAt;
1420    AudioTimestamp ts;
1421    static const int64_t kStaleTimestamp100ms = 100000;
1422
1423    status_t res = mAudioSink->getTimestamp(ts);
1424    if (res == OK) {                 // case 1: mixing audio tracks and offloaded tracks.
1425        numFramesPlayed = ts.mPosition;
1426        numFramesPlayedAt =
1427            ts.mTime.tv_sec * 1000000LL + ts.mTime.tv_nsec / 1000;
1428        const int64_t timestampAge = nowUs - numFramesPlayedAt;
1429        if (timestampAge > kStaleTimestamp100ms) {
1430            // This is an audio FIXME.
1431            // getTimestamp returns a timestamp which may come from audio mixing threads.
1432            // After pausing, the MixerThread may go idle, thus the mTime estimate may
1433            // become stale. Assuming that the MixerThread runs 20ms, with FastMixer at 5ms,
1434            // the max latency should be about 25ms with an average around 12ms (to be verified).
1435            // For safety we use 100ms.
1436            ALOGV("getTimestamp: returned stale timestamp nowUs(%lld) numFramesPlayedAt(%lld)",
1437                    (long long)nowUs, (long long)numFramesPlayedAt);
1438            numFramesPlayedAt = nowUs - kStaleTimestamp100ms;
1439        }
1440        //ALOGD("getTimestamp: OK %d %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1441    } else if (res == WOULD_BLOCK) { // case 2: transitory state on start of a new track
1442        numFramesPlayed = 0;
1443        numFramesPlayedAt = nowUs;
1444        //ALOGD("getTimestamp: WOULD_BLOCK %d %lld",
1445        //        numFramesPlayed, (long long)numFramesPlayedAt);
1446    } else {                         // case 3: transitory at new track or audio fast tracks.
1447        res = mAudioSink->getPosition(&numFramesPlayed);
1448        CHECK_EQ(res, (status_t)OK);
1449        numFramesPlayedAt = nowUs;
1450        numFramesPlayedAt += 1000LL * mAudioSink->latency() / 2; /* XXX */
1451        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1452    }
1453
1454    //CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
1455    int64_t durationUs = getDurationUsIfPlayedAtSampleRate(numFramesPlayed)
1456            + nowUs - numFramesPlayedAt;
1457    if (durationUs < 0) {
1458        // Occurs when numFramesPlayed position is very small and the following:
1459        // (1) In case 1, the time nowUs is computed before getTimestamp() is called and
1460        //     numFramesPlayedAt is greater than nowUs by time more than numFramesPlayed.
1461        // (2) In case 3, using getPosition and adding mAudioSink->latency() to
1462        //     numFramesPlayedAt, by a time amount greater than numFramesPlayed.
1463        //
1464        // Both of these are transitory conditions.
1465        ALOGV("getPlayedOutAudioDurationUs: negative duration %lld set to zero", (long long)durationUs);
1466        durationUs = 0;
1467    }
1468    ALOGV("getPlayedOutAudioDurationUs(%lld) nowUs(%lld) frames(%u) framesAt(%lld)",
1469            (long long)durationUs, (long long)nowUs, numFramesPlayed, (long long)numFramesPlayedAt);
1470    return durationUs;
1471}
1472
1473void NuPlayer::Renderer::onAudioOffloadTearDown(AudioOffloadTearDownReason reason) {
1474    if (mAudioOffloadTornDown) {
1475        return;
1476    }
1477    mAudioOffloadTornDown = true;
1478
1479    int64_t currentPositionUs;
1480    if (getCurrentPosition(&currentPositionUs) != OK) {
1481        currentPositionUs = 0;
1482    }
1483
1484    mAudioSink->stop();
1485    mAudioSink->flush();
1486
1487    sp<AMessage> notify = mNotify->dup();
1488    notify->setInt32("what", kWhatAudioOffloadTearDown);
1489    notify->setInt64("positionUs", currentPositionUs);
1490    notify->setInt32("reason", reason);
1491    notify->post();
1492}
1493
1494void NuPlayer::Renderer::startAudioOffloadPauseTimeout() {
1495    if (offloadingAudio()) {
1496        mWakeLock->acquire();
1497        sp<AMessage> msg = new AMessage(kWhatAudioOffloadPauseTimeout, this);
1498        msg->setInt32("drainGeneration", mAudioOffloadPauseTimeoutGeneration);
1499        msg->post(kOffloadPauseMaxUs);
1500    }
1501}
1502
1503void NuPlayer::Renderer::cancelAudioOffloadPauseTimeout() {
1504    if (offloadingAudio()) {
1505        mWakeLock->release(true);
1506        ++mAudioOffloadPauseTimeoutGeneration;
1507    }
1508}
1509
1510status_t NuPlayer::Renderer::onOpenAudioSink(
1511        const sp<AMessage> &format,
1512        bool offloadOnly,
1513        bool hasVideo,
1514        uint32_t flags) {
1515    ALOGV("openAudioSink: offloadOnly(%d) offloadingAudio(%d)",
1516            offloadOnly, offloadingAudio());
1517    bool audioSinkChanged = false;
1518
1519    int32_t numChannels;
1520    CHECK(format->findInt32("channel-count", &numChannels));
1521
1522    int32_t channelMask;
1523    if (!format->findInt32("channel-mask", &channelMask)) {
1524        // signal to the AudioSink to derive the mask from count.
1525        channelMask = CHANNEL_MASK_USE_CHANNEL_ORDER;
1526    }
1527
1528    int32_t sampleRate;
1529    CHECK(format->findInt32("sample-rate", &sampleRate));
1530
1531    if (offloadingAudio()) {
1532        audio_format_t audioFormat = AUDIO_FORMAT_PCM_16_BIT;
1533        AString mime;
1534        CHECK(format->findString("mime", &mime));
1535        status_t err = mapMimeToAudioFormat(audioFormat, mime.c_str());
1536
1537        if (err != OK) {
1538            ALOGE("Couldn't map mime \"%s\" to a valid "
1539                    "audio_format", mime.c_str());
1540            onDisableOffloadAudio();
1541        } else {
1542            ALOGV("Mime \"%s\" mapped to audio_format 0x%x",
1543                    mime.c_str(), audioFormat);
1544
1545            int avgBitRate = -1;
1546            format->findInt32("bit-rate", &avgBitRate);
1547
1548            int32_t aacProfile = -1;
1549            if (audioFormat == AUDIO_FORMAT_AAC
1550                    && format->findInt32("aac-profile", &aacProfile)) {
1551                // Redefine AAC format as per aac profile
1552                mapAACProfileToAudioFormat(
1553                        audioFormat,
1554                        aacProfile);
1555            }
1556
1557            audio_offload_info_t offloadInfo = AUDIO_INFO_INITIALIZER;
1558            offloadInfo.duration_us = -1;
1559            format->findInt64(
1560                    "durationUs", &offloadInfo.duration_us);
1561            offloadInfo.sample_rate = sampleRate;
1562            offloadInfo.channel_mask = channelMask;
1563            offloadInfo.format = audioFormat;
1564            offloadInfo.stream_type = AUDIO_STREAM_MUSIC;
1565            offloadInfo.bit_rate = avgBitRate;
1566            offloadInfo.has_video = hasVideo;
1567            offloadInfo.is_streaming = true;
1568
1569            if (memcmp(&mCurrentOffloadInfo, &offloadInfo, sizeof(offloadInfo)) == 0) {
1570                ALOGV("openAudioSink: no change in offload mode");
1571                // no change from previous configuration, everything ok.
1572                return OK;
1573            }
1574            mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1575
1576            ALOGV("openAudioSink: try to open AudioSink in offload mode");
1577            uint32_t offloadFlags = flags;
1578            offloadFlags |= AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1579            offloadFlags &= ~AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
1580            audioSinkChanged = true;
1581            mAudioSink->close();
1582            err = mAudioSink->open(
1583                    sampleRate,
1584                    numChannels,
1585                    (audio_channel_mask_t)channelMask,
1586                    audioFormat,
1587                    8 /* bufferCount */,
1588                    &NuPlayer::Renderer::AudioSinkCallback,
1589                    this,
1590                    (audio_output_flags_t)offloadFlags,
1591                    &offloadInfo);
1592
1593            if (err == OK) {
1594                err = mAudioSink->setPlaybackRate(mPlaybackSettings);
1595            }
1596
1597            if (err == OK) {
1598                // If the playback is offloaded to h/w, we pass
1599                // the HAL some metadata information.
1600                // We don't want to do this for PCM because it
1601                // will be going through the AudioFlinger mixer
1602                // before reaching the hardware.
1603                // TODO
1604                mCurrentOffloadInfo = offloadInfo;
1605                err = mAudioSink->start();
1606                ALOGV_IF(err == OK, "openAudioSink: offload succeeded");
1607            }
1608            if (err != OK) {
1609                // Clean up, fall back to non offload mode.
1610                mAudioSink->close();
1611                onDisableOffloadAudio();
1612                mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1613                ALOGV("openAudioSink: offload failed");
1614            }
1615        }
1616    }
1617    if (!offloadOnly && !offloadingAudio()) {
1618        ALOGV("openAudioSink: open AudioSink in NON-offload mode");
1619        uint32_t pcmFlags = flags;
1620        pcmFlags &= ~AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1621
1622        const PcmInfo info = {
1623                (audio_channel_mask_t)channelMask,
1624                (audio_output_flags_t)pcmFlags,
1625                AUDIO_FORMAT_PCM_16_BIT, // TODO: change to audioFormat
1626                numChannels,
1627                sampleRate
1628        };
1629        if (memcmp(&mCurrentPcmInfo, &info, sizeof(info)) == 0) {
1630            ALOGV("openAudioSink: no change in pcm mode");
1631            // no change from previous configuration, everything ok.
1632            return OK;
1633        }
1634
1635        audioSinkChanged = true;
1636        mAudioSink->close();
1637        mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1638        status_t err = mAudioSink->open(
1639                    sampleRate,
1640                    numChannels,
1641                    (audio_channel_mask_t)channelMask,
1642                    AUDIO_FORMAT_PCM_16_BIT,
1643                    8 /* bufferCount */,
1644                    NULL,
1645                    NULL,
1646                    (audio_output_flags_t)pcmFlags);
1647        if (err == OK) {
1648            err = mAudioSink->setPlaybackRate(mPlaybackSettings);
1649        }
1650        if (err != OK) {
1651            ALOGW("openAudioSink: non offloaded open failed status: %d", err);
1652            mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1653            return err;
1654        }
1655        mCurrentPcmInfo = info;
1656        mAudioSink->start();
1657    }
1658    if (audioSinkChanged) {
1659        onAudioSinkChanged();
1660    }
1661    if (offloadingAudio()) {
1662        mAudioOffloadTornDown = false;
1663    }
1664    return OK;
1665}
1666
1667void NuPlayer::Renderer::onCloseAudioSink() {
1668    mAudioSink->close();
1669    mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1670    mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1671}
1672
1673}  // namespace android
1674
1675