NuPlayerRenderer.cpp revision 97c9f4fd7bc31e2968d816402659ba1c64f10b42 
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#include <cutils/properties.h>
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#include <media/stagefright/VideoFrameScheduler.h>
33
34#include <inttypes.h>
35
36namespace android {
37
38/*
39 * Example of common configuration settings in shell script form
40
41   #Turn offload audio off (use PCM for Play Music) -- AudioPolicyManager
42   adb shell setprop audio.offload.disable 1
43
44   #Allow offload audio with video (requires offloading to be enabled) -- AudioPolicyManager
45   adb shell setprop audio.offload.video 1
46
47   #Use audio callbacks for PCM data
48   adb shell setprop media.stagefright.audio.cbk 1
49
50   #Use deep buffer for PCM data with video (it is generally enabled for audio-only)
51   adb shell setprop media.stagefright.audio.deep 1
52
53   #Set size of buffers for pcm audio sink in msec (example: 1000 msec)
54   adb shell setprop media.stagefright.audio.sink 1000
55
56 * These configurations take effect for the next track played (not the current track).
57 */
58
59static inline bool getUseAudioCallbackSetting() {
60    return property_get_bool("media.stagefright.audio.cbk", false /* default_value */);
61}
62
63static inline int32_t getAudioSinkPcmMsSetting() {
64    return property_get_int32(
65            "media.stagefright.audio.sink", 500 /* default_value */);
66}
67
68// Maximum time in paused state when offloading audio decompression. When elapsed, the AudioSink
69// is closed to allow the audio DSP to power down.
70static const int64_t kOffloadPauseMaxUs = 10000000ll;
71
72// static
73const NuPlayer::Renderer::PcmInfo NuPlayer::Renderer::AUDIO_PCMINFO_INITIALIZER = {
74        AUDIO_CHANNEL_NONE,
75        AUDIO_OUTPUT_FLAG_NONE,
76        AUDIO_FORMAT_INVALID,
77        0, // mNumChannels
78        0 // mSampleRate
79};
80
81// static
82const int64_t NuPlayer::Renderer::kMinPositionUpdateDelayUs = 100000ll;
83
84NuPlayer::Renderer::Renderer(
85        const sp<MediaPlayerBase::AudioSink> &sink,
86        const sp<AMessage> &notify,
87        uint32_t flags)
88    : mAudioSink(sink),
89      mNotify(notify),
90      mFlags(flags),
91      mNumFramesWritten(0),
92      mDrainAudioQueuePending(false),
93      mDrainVideoQueuePending(false),
94      mAudioQueueGeneration(0),
95      mVideoQueueGeneration(0),
96      mAudioDrainGeneration(0),
97      mVideoDrainGeneration(0),
98      mPlaybackSettings(AUDIO_PLAYBACK_RATE_DEFAULT),
99      mAudioFirstAnchorTimeMediaUs(-1),
100      mAnchorTimeMediaUs(-1),
101      mAnchorNumFramesWritten(-1),
102      mVideoLateByUs(0ll),
103      mHasAudio(false),
104      mHasVideo(false),
105      mNotifyCompleteAudio(false),
106      mNotifyCompleteVideo(false),
107      mSyncQueues(false),
108      mPaused(false),
109      mVideoSampleReceived(false),
110      mVideoRenderingStarted(false),
111      mVideoRenderingStartGeneration(0),
112      mAudioRenderingStartGeneration(0),
113      mAudioOffloadPauseTimeoutGeneration(0),
114      mAudioTornDown(false),
115      mCurrentOffloadInfo(AUDIO_INFO_INITIALIZER),
116      mCurrentPcmInfo(AUDIO_PCMINFO_INITIALIZER),
117      mTotalBuffersQueued(0),
118      mLastAudioBufferDrained(0),
119      mUseAudioCallback(false),
120      mWakeLock(new AWakeLock()) {
121    mMediaClock = new MediaClock;
122    mPlaybackRate = mPlaybackSettings.mSpeed;
123    mMediaClock->setPlaybackRate(mPlaybackRate);
124}
125
126NuPlayer::Renderer::~Renderer() {
127    if (offloadingAudio()) {
128        mAudioSink->stop();
129        mAudioSink->flush();
130        mAudioSink->close();
131    }
132}
133
134void NuPlayer::Renderer::queueBuffer(
135        bool audio,
136        const sp<ABuffer> &buffer,
137        const sp<AMessage> &notifyConsumed) {
138    sp<AMessage> msg = new AMessage(kWhatQueueBuffer, this);
139    msg->setInt32("queueGeneration", getQueueGeneration(audio));
140    msg->setInt32("audio", static_cast<int32_t>(audio));
141    msg->setBuffer("buffer", buffer);
142    msg->setMessage("notifyConsumed", notifyConsumed);
143    msg->post();
144}
145
146void NuPlayer::Renderer::queueEOS(bool audio, status_t finalResult) {
147    CHECK_NE(finalResult, (status_t)OK);
148
149    sp<AMessage> msg = new AMessage(kWhatQueueEOS, this);
150    msg->setInt32("queueGeneration", getQueueGeneration(audio));
151    msg->setInt32("audio", static_cast<int32_t>(audio));
152    msg->setInt32("finalResult", finalResult);
153    msg->post();
154}
155
156status_t NuPlayer::Renderer::setPlaybackSettings(const AudioPlaybackRate &rate) {
157    sp<AMessage> msg = new AMessage(kWhatConfigPlayback, this);
158    writeToAMessage(msg, rate);
159    sp<AMessage> response;
160    status_t err = msg->postAndAwaitResponse(&response);
161    if (err == OK && response != NULL) {
162        CHECK(response->findInt32("err", &err));
163    }
164    return err;
165}
166
167status_t NuPlayer::Renderer::onConfigPlayback(const AudioPlaybackRate &rate /* sanitized */) {
168    if (rate.mSpeed == 0.f) {
169        onPause();
170        // don't call audiosink's setPlaybackRate if pausing, as pitch does not
171        // have to correspond to the any non-0 speed (e.g old speed). Keep
172        // settings nonetheless, using the old speed, in case audiosink changes.
173        AudioPlaybackRate newRate = rate;
174        newRate.mSpeed = mPlaybackSettings.mSpeed;
175        mPlaybackSettings = newRate;
176        return OK;
177    }
178
179    if (mAudioSink != NULL && mAudioSink->ready()) {
180        status_t err = mAudioSink->setPlaybackRate(rate);
181        if (err != OK) {
182            return err;
183        }
184    }
185    mPlaybackSettings = rate;
186    mPlaybackRate = rate.mSpeed;
187    mMediaClock->setPlaybackRate(mPlaybackRate);
188    return OK;
189}
190
191status_t NuPlayer::Renderer::getPlaybackSettings(AudioPlaybackRate *rate /* nonnull */) {
192    sp<AMessage> msg = new AMessage(kWhatGetPlaybackSettings, this);
193    sp<AMessage> response;
194    status_t err = msg->postAndAwaitResponse(&response);
195    if (err == OK && response != NULL) {
196        CHECK(response->findInt32("err", &err));
197        if (err == OK) {
198            readFromAMessage(response, rate);
199        }
200    }
201    return err;
202}
203
204status_t NuPlayer::Renderer::onGetPlaybackSettings(AudioPlaybackRate *rate /* nonnull */) {
205    if (mAudioSink != NULL && mAudioSink->ready()) {
206        status_t err = mAudioSink->getPlaybackRate(rate);
207        if (err == OK) {
208            if (!isAudioPlaybackRateEqual(*rate, mPlaybackSettings)) {
209                ALOGW("correcting mismatch in internal/external playback rate");
210            }
211            // get playback settings used by audiosink, as it may be
212            // slightly off due to audiosink not taking small changes.
213            mPlaybackSettings = *rate;
214            if (mPaused) {
215                rate->mSpeed = 0.f;
216            }
217        }
218        return err;
219    }
220    *rate = mPlaybackSettings;
221    return OK;
222}
223
224status_t NuPlayer::Renderer::setSyncSettings(const AVSyncSettings &sync, float videoFpsHint) {
225    sp<AMessage> msg = new AMessage(kWhatConfigSync, this);
226    writeToAMessage(msg, sync, videoFpsHint);
227    sp<AMessage> response;
228    status_t err = msg->postAndAwaitResponse(&response);
229    if (err == OK && response != NULL) {
230        CHECK(response->findInt32("err", &err));
231    }
232    return err;
233}
234
235status_t NuPlayer::Renderer::onConfigSync(const AVSyncSettings &sync, float videoFpsHint __unused) {
236    if (sync.mSource != AVSYNC_SOURCE_DEFAULT) {
237        return BAD_VALUE;
238    }
239    // TODO: support sync sources
240    return INVALID_OPERATION;
241}
242
243status_t NuPlayer::Renderer::getSyncSettings(AVSyncSettings *sync, float *videoFps) {
244    sp<AMessage> msg = new AMessage(kWhatGetSyncSettings, this);
245    sp<AMessage> response;
246    status_t err = msg->postAndAwaitResponse(&response);
247    if (err == OK && response != NULL) {
248        CHECK(response->findInt32("err", &err));
249        if (err == OK) {
250            readFromAMessage(response, sync, videoFps);
251        }
252    }
253    return err;
254}
255
256status_t NuPlayer::Renderer::onGetSyncSettings(
257        AVSyncSettings *sync /* nonnull */, float *videoFps /* nonnull */) {
258    *sync = mSyncSettings;
259    *videoFps = -1.f;
260    return OK;
261}
262
263void NuPlayer::Renderer::flush(bool audio, bool notifyComplete) {
264    {
265        Mutex::Autolock autoLock(mLock);
266        if (audio) {
267            mNotifyCompleteAudio |= notifyComplete;
268            clearAudioFirstAnchorTime_l();
269            ++mAudioQueueGeneration;
270            ++mAudioDrainGeneration;
271        } else {
272            mNotifyCompleteVideo |= notifyComplete;
273            ++mVideoQueueGeneration;
274            ++mVideoDrainGeneration;
275        }
276
277        clearAnchorTime_l();
278        mVideoLateByUs = 0;
279        mSyncQueues = false;
280    }
281
282    sp<AMessage> msg = new AMessage(kWhatFlush, this);
283    msg->setInt32("audio", static_cast<int32_t>(audio));
284    msg->post();
285}
286
287void NuPlayer::Renderer::signalTimeDiscontinuity() {
288}
289
290void NuPlayer::Renderer::signalDisableOffloadAudio() {
291    (new AMessage(kWhatDisableOffloadAudio, this))->post();
292}
293
294void NuPlayer::Renderer::signalEnableOffloadAudio() {
295    (new AMessage(kWhatEnableOffloadAudio, this))->post();
296}
297
298void NuPlayer::Renderer::pause() {
299    (new AMessage(kWhatPause, this))->post();
300}
301
302void NuPlayer::Renderer::resume() {
303    (new AMessage(kWhatResume, this))->post();
304}
305
306void NuPlayer::Renderer::setVideoFrameRate(float fps) {
307    sp<AMessage> msg = new AMessage(kWhatSetVideoFrameRate, this);
308    msg->setFloat("frame-rate", fps);
309    msg->post();
310}
311
312// Called on any threads.
313status_t NuPlayer::Renderer::getCurrentPosition(int64_t *mediaUs) {
314    return mMediaClock->getMediaTime(ALooper::GetNowUs(), mediaUs);
315}
316
317void NuPlayer::Renderer::clearAudioFirstAnchorTime_l() {
318    mAudioFirstAnchorTimeMediaUs = -1;
319    mMediaClock->setStartingTimeMedia(-1);
320}
321
322void NuPlayer::Renderer::setAudioFirstAnchorTimeIfNeeded_l(int64_t mediaUs) {
323    if (mAudioFirstAnchorTimeMediaUs == -1) {
324        mAudioFirstAnchorTimeMediaUs = mediaUs;
325        mMediaClock->setStartingTimeMedia(mediaUs);
326    }
327}
328
329void NuPlayer::Renderer::clearAnchorTime_l() {
330    mMediaClock->clearAnchor();
331    mAnchorTimeMediaUs = -1;
332    mAnchorNumFramesWritten = -1;
333}
334
335void NuPlayer::Renderer::setVideoLateByUs(int64_t lateUs) {
336    Mutex::Autolock autoLock(mLock);
337    mVideoLateByUs = lateUs;
338}
339
340int64_t NuPlayer::Renderer::getVideoLateByUs() {
341    Mutex::Autolock autoLock(mLock);
342    return mVideoLateByUs;
343}
344
345status_t NuPlayer::Renderer::openAudioSink(
346        const sp<AMessage> &format,
347        bool offloadOnly,
348        bool hasVideo,
349        uint32_t flags,
350        bool *isOffloaded) {
351    sp<AMessage> msg = new AMessage(kWhatOpenAudioSink, this);
352    msg->setMessage("format", format);
353    msg->setInt32("offload-only", offloadOnly);
354    msg->setInt32("has-video", hasVideo);
355    msg->setInt32("flags", flags);
356
357    sp<AMessage> response;
358    msg->postAndAwaitResponse(&response);
359
360    int32_t err;
361    if (!response->findInt32("err", &err)) {
362        err = INVALID_OPERATION;
363    } else if (err == OK && isOffloaded != NULL) {
364        int32_t offload;
365        CHECK(response->findInt32("offload", &offload));
366        *isOffloaded = (offload != 0);
367    }
368    return err;
369}
370
371void NuPlayer::Renderer::closeAudioSink() {
372    sp<AMessage> msg = new AMessage(kWhatCloseAudioSink, this);
373
374    sp<AMessage> response;
375    msg->postAndAwaitResponse(&response);
376}
377
378void NuPlayer::Renderer::onMessageReceived(const sp<AMessage> &msg) {
379    switch (msg->what()) {
380        case kWhatOpenAudioSink:
381        {
382            sp<AMessage> format;
383            CHECK(msg->findMessage("format", &format));
384
385            int32_t offloadOnly;
386            CHECK(msg->findInt32("offload-only", &offloadOnly));
387
388            int32_t hasVideo;
389            CHECK(msg->findInt32("has-video", &hasVideo));
390
391            uint32_t flags;
392            CHECK(msg->findInt32("flags", (int32_t *)&flags));
393
394            status_t err = onOpenAudioSink(format, offloadOnly, hasVideo, flags);
395
396            sp<AMessage> response = new AMessage;
397            response->setInt32("err", err);
398            response->setInt32("offload", offloadingAudio());
399
400            sp<AReplyToken> replyID;
401            CHECK(msg->senderAwaitsResponse(&replyID));
402            response->postReply(replyID);
403
404            break;
405        }
406
407        case kWhatCloseAudioSink:
408        {
409            sp<AReplyToken> replyID;
410            CHECK(msg->senderAwaitsResponse(&replyID));
411
412            onCloseAudioSink();
413
414            sp<AMessage> response = new AMessage;
415            response->postReply(replyID);
416            break;
417        }
418
419        case kWhatStopAudioSink:
420        {
421            mAudioSink->stop();
422            break;
423        }
424
425        case kWhatDrainAudioQueue:
426        {
427            mDrainAudioQueuePending = false;
428
429            int32_t generation;
430            CHECK(msg->findInt32("drainGeneration", &generation));
431            if (generation != getDrainGeneration(true /* audio */)) {
432                break;
433            }
434
435            if (onDrainAudioQueue()) {
436                uint32_t numFramesPlayed;
437                CHECK_EQ(mAudioSink->getPosition(&numFramesPlayed),
438                         (status_t)OK);
439
440                uint32_t numFramesPendingPlayout =
441                    mNumFramesWritten - numFramesPlayed;
442
443                // This is how long the audio sink will have data to
444                // play back.
445                int64_t delayUs =
446                    mAudioSink->msecsPerFrame()
447                        * numFramesPendingPlayout * 1000ll;
448                if (mPlaybackRate > 1.0f) {
449                    delayUs /= mPlaybackRate;
450                }
451
452                // Let's give it more data after about half that time
453                // has elapsed.
454                Mutex::Autolock autoLock(mLock);
455                postDrainAudioQueue_l(delayUs / 2);
456            }
457            break;
458        }
459
460        case kWhatDrainVideoQueue:
461        {
462            int32_t generation;
463            CHECK(msg->findInt32("drainGeneration", &generation));
464            if (generation != getDrainGeneration(false /* audio */)) {
465                break;
466            }
467
468            mDrainVideoQueuePending = false;
469
470            onDrainVideoQueue();
471
472            postDrainVideoQueue();
473            break;
474        }
475
476        case kWhatPostDrainVideoQueue:
477        {
478            int32_t generation;
479            CHECK(msg->findInt32("drainGeneration", &generation));
480            if (generation != getDrainGeneration(false /* audio */)) {
481                break;
482            }
483
484            mDrainVideoQueuePending = false;
485            postDrainVideoQueue();
486            break;
487        }
488
489        case kWhatQueueBuffer:
490        {
491            onQueueBuffer(msg);
492            break;
493        }
494
495        case kWhatQueueEOS:
496        {
497            onQueueEOS(msg);
498            break;
499        }
500
501        case kWhatConfigPlayback:
502        {
503            sp<AReplyToken> replyID;
504            CHECK(msg->senderAwaitsResponse(&replyID));
505            AudioPlaybackRate rate;
506            readFromAMessage(msg, &rate);
507            status_t err = onConfigPlayback(rate);
508            sp<AMessage> response = new AMessage;
509            response->setInt32("err", err);
510            response->postReply(replyID);
511            break;
512        }
513
514        case kWhatGetPlaybackSettings:
515        {
516            sp<AReplyToken> replyID;
517            CHECK(msg->senderAwaitsResponse(&replyID));
518            AudioPlaybackRate rate = AUDIO_PLAYBACK_RATE_DEFAULT;
519            status_t err = onGetPlaybackSettings(&rate);
520            sp<AMessage> response = new AMessage;
521            if (err == OK) {
522                writeToAMessage(response, rate);
523            }
524            response->setInt32("err", err);
525            response->postReply(replyID);
526            break;
527        }
528
529        case kWhatConfigSync:
530        {
531            sp<AReplyToken> replyID;
532            CHECK(msg->senderAwaitsResponse(&replyID));
533            AVSyncSettings sync;
534            float videoFpsHint;
535            readFromAMessage(msg, &sync, &videoFpsHint);
536            status_t err = onConfigSync(sync, videoFpsHint);
537            sp<AMessage> response = new AMessage;
538            response->setInt32("err", err);
539            response->postReply(replyID);
540            break;
541        }
542
543        case kWhatGetSyncSettings:
544        {
545            sp<AReplyToken> replyID;
546            CHECK(msg->senderAwaitsResponse(&replyID));
547
548            ALOGV("kWhatGetSyncSettings");
549            AVSyncSettings sync;
550            float videoFps = -1.f;
551            status_t err = onGetSyncSettings(&sync, &videoFps);
552            sp<AMessage> response = new AMessage;
553            if (err == OK) {
554                writeToAMessage(response, sync, videoFps);
555            }
556            response->setInt32("err", err);
557            response->postReply(replyID);
558            break;
559        }
560
561        case kWhatFlush:
562        {
563            onFlush(msg);
564            break;
565        }
566
567        case kWhatDisableOffloadAudio:
568        {
569            onDisableOffloadAudio();
570            break;
571        }
572
573        case kWhatEnableOffloadAudio:
574        {
575            onEnableOffloadAudio();
576            break;
577        }
578
579        case kWhatPause:
580        {
581            onPause();
582            break;
583        }
584
585        case kWhatResume:
586        {
587            onResume();
588            break;
589        }
590
591        case kWhatSetVideoFrameRate:
592        {
593            float fps;
594            CHECK(msg->findFloat("frame-rate", &fps));
595            onSetVideoFrameRate(fps);
596            break;
597        }
598
599        case kWhatAudioTearDown:
600        {
601            onAudioTearDown(kDueToError);
602            break;
603        }
604
605        case kWhatAudioOffloadPauseTimeout:
606        {
607            int32_t generation;
608            CHECK(msg->findInt32("drainGeneration", &generation));
609            if (generation != mAudioOffloadPauseTimeoutGeneration) {
610                break;
611            }
612            ALOGV("Audio Offload tear down due to pause timeout.");
613            onAudioTearDown(kDueToTimeout);
614            mWakeLock->release();
615            break;
616        }
617
618        default:
619            TRESPASS();
620            break;
621    }
622}
623
624void NuPlayer::Renderer::postDrainAudioQueue_l(int64_t delayUs) {
625    if (mDrainAudioQueuePending || mSyncQueues || mUseAudioCallback) {
626        return;
627    }
628
629    if (mAudioQueue.empty()) {
630        return;
631    }
632
633    mDrainAudioQueuePending = true;
634    sp<AMessage> msg = new AMessage(kWhatDrainAudioQueue, this);
635    msg->setInt32("drainGeneration", mAudioDrainGeneration);
636    msg->post(delayUs);
637}
638
639void NuPlayer::Renderer::prepareForMediaRenderingStart_l() {
640    mAudioRenderingStartGeneration = mAudioDrainGeneration;
641    mVideoRenderingStartGeneration = mVideoDrainGeneration;
642}
643
644void NuPlayer::Renderer::notifyIfMediaRenderingStarted_l() {
645    if (mVideoRenderingStartGeneration == mVideoDrainGeneration &&
646        mAudioRenderingStartGeneration == mAudioDrainGeneration) {
647        mVideoRenderingStartGeneration = -1;
648        mAudioRenderingStartGeneration = -1;
649
650        sp<AMessage> notify = mNotify->dup();
651        notify->setInt32("what", kWhatMediaRenderingStart);
652        notify->post();
653    }
654}
655
656// static
657size_t NuPlayer::Renderer::AudioSinkCallback(
658        MediaPlayerBase::AudioSink * /* audioSink */,
659        void *buffer,
660        size_t size,
661        void *cookie,
662        MediaPlayerBase::AudioSink::cb_event_t event) {
663    NuPlayer::Renderer *me = (NuPlayer::Renderer *)cookie;
664
665    switch (event) {
666        case MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER:
667        {
668            return me->fillAudioBuffer(buffer, size);
669            break;
670        }
671
672        case MediaPlayerBase::AudioSink::CB_EVENT_STREAM_END:
673        {
674            ALOGV("AudioSink::CB_EVENT_STREAM_END");
675            me->notifyEOS(true /* audio */, ERROR_END_OF_STREAM);
676            break;
677        }
678
679        case MediaPlayerBase::AudioSink::CB_EVENT_TEAR_DOWN:
680        {
681            ALOGV("AudioSink::CB_EVENT_TEAR_DOWN");
682            me->notifyAudioTearDown();
683            break;
684        }
685    }
686
687    return 0;
688}
689
690size_t NuPlayer::Renderer::fillAudioBuffer(void *buffer, size_t size) {
691    Mutex::Autolock autoLock(mLock);
692
693    if (!mUseAudioCallback) {
694        return 0;
695    }
696
697    bool hasEOS = false;
698
699    size_t sizeCopied = 0;
700    bool firstEntry = true;
701    QueueEntry *entry;  // will be valid after while loop if hasEOS is set.
702    while (sizeCopied < size && !mAudioQueue.empty()) {
703        entry = &*mAudioQueue.begin();
704
705        if (entry->mBuffer == NULL) { // EOS
706            hasEOS = true;
707            mAudioQueue.erase(mAudioQueue.begin());
708            break;
709        }
710
711        if (firstEntry && entry->mOffset == 0) {
712            firstEntry = false;
713            int64_t mediaTimeUs;
714            CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
715            ALOGV("fillAudioBuffer: rendering audio at media time %.2f secs", mediaTimeUs / 1E6);
716            setAudioFirstAnchorTimeIfNeeded_l(mediaTimeUs);
717        }
718
719        size_t copy = entry->mBuffer->size() - entry->mOffset;
720        size_t sizeRemaining = size - sizeCopied;
721        if (copy > sizeRemaining) {
722            copy = sizeRemaining;
723        }
724
725        memcpy((char *)buffer + sizeCopied,
726               entry->mBuffer->data() + entry->mOffset,
727               copy);
728
729        entry->mOffset += copy;
730        if (entry->mOffset == entry->mBuffer->size()) {
731            entry->mNotifyConsumed->post();
732            mAudioQueue.erase(mAudioQueue.begin());
733            entry = NULL;
734        }
735        sizeCopied += copy;
736
737        notifyIfMediaRenderingStarted_l();
738    }
739
740    if (mAudioFirstAnchorTimeMediaUs >= 0) {
741        int64_t nowUs = ALooper::GetNowUs();
742        int64_t nowMediaUs =
743            mAudioFirstAnchorTimeMediaUs + getPlayedOutAudioDurationUs(nowUs);
744        // we don't know how much data we are queueing for offloaded tracks.
745        mMediaClock->updateAnchor(nowMediaUs, nowUs, INT64_MAX);
746    }
747
748    // for non-offloaded audio, we need to compute the frames written because
749    // there is no EVENT_STREAM_END notification. The frames written gives
750    // an estimate on the pending played out duration.
751    if (!offloadingAudio()) {
752        mNumFramesWritten += sizeCopied / mAudioSink->frameSize();
753    }
754
755    if (hasEOS) {
756        (new AMessage(kWhatStopAudioSink, this))->post();
757        // As there is currently no EVENT_STREAM_END callback notification for
758        // non-offloaded audio tracks, we need to post the EOS ourselves.
759        if (!offloadingAudio()) {
760            int64_t postEOSDelayUs = 0;
761            if (mAudioSink->needsTrailingPadding()) {
762                postEOSDelayUs = getPendingAudioPlayoutDurationUs(ALooper::GetNowUs());
763            }
764            ALOGV("fillAudioBuffer: notifyEOS "
765                    "mNumFramesWritten:%u  finalResult:%d  postEOSDelay:%lld",
766                    mNumFramesWritten, entry->mFinalResult, (long long)postEOSDelayUs);
767            notifyEOS(true /* audio */, entry->mFinalResult, postEOSDelayUs);
768        }
769    }
770    return sizeCopied;
771}
772
773void NuPlayer::Renderer::drainAudioQueueUntilLastEOS() {
774    List<QueueEntry>::iterator it = mAudioQueue.begin(), itEOS = it;
775    bool foundEOS = false;
776    while (it != mAudioQueue.end()) {
777        int32_t eos;
778        QueueEntry *entry = &*it++;
779        if (entry->mBuffer == NULL
780                || (entry->mNotifyConsumed->findInt32("eos", &eos) && eos != 0)) {
781            itEOS = it;
782            foundEOS = true;
783        }
784    }
785
786    if (foundEOS) {
787        // post all replies before EOS and drop the samples
788        for (it = mAudioQueue.begin(); it != itEOS; it++) {
789            if (it->mBuffer == NULL) {
790                // delay doesn't matter as we don't even have an AudioTrack
791                notifyEOS(true /* audio */, it->mFinalResult);
792            } else {
793                it->mNotifyConsumed->post();
794            }
795        }
796        mAudioQueue.erase(mAudioQueue.begin(), itEOS);
797    }
798}
799
800bool NuPlayer::Renderer::onDrainAudioQueue() {
801    // TODO: This call to getPosition checks if AudioTrack has been created
802    // in AudioSink before draining audio. If AudioTrack doesn't exist, then
803    // CHECKs on getPosition will fail.
804    // We still need to figure out why AudioTrack is not created when
805    // this function is called. One possible reason could be leftover
806    // audio. Another possible place is to check whether decoder
807    // has received INFO_FORMAT_CHANGED as the first buffer since
808    // AudioSink is opened there, and possible interactions with flush
809    // immediately after start. Investigate error message
810    // "vorbis_dsp_synthesis returned -135", along with RTSP.
811    uint32_t numFramesPlayed;
812    if (mAudioSink->getPosition(&numFramesPlayed) != OK) {
813        // When getPosition fails, renderer will not reschedule the draining
814        // unless new samples are queued.
815        // If we have pending EOS (or "eos" marker for discontinuities), we need
816        // to post these now as NuPlayerDecoder might be waiting for it.
817        drainAudioQueueUntilLastEOS();
818
819        ALOGW("onDrainAudioQueue(): audio sink is not ready");
820        return false;
821    }
822
823#if 0
824    ssize_t numFramesAvailableToWrite =
825        mAudioSink->frameCount() - (mNumFramesWritten - numFramesPlayed);
826
827    if (numFramesAvailableToWrite == mAudioSink->frameCount()) {
828        ALOGI("audio sink underrun");
829    } else {
830        ALOGV("audio queue has %d frames left to play",
831             mAudioSink->frameCount() - numFramesAvailableToWrite);
832    }
833#endif
834
835    uint32_t prevFramesWritten = mNumFramesWritten;
836    while (!mAudioQueue.empty()) {
837        QueueEntry *entry = &*mAudioQueue.begin();
838
839        mLastAudioBufferDrained = entry->mBufferOrdinal;
840
841        if (entry->mBuffer == NULL) {
842            // EOS
843            int64_t postEOSDelayUs = 0;
844            if (mAudioSink->needsTrailingPadding()) {
845                postEOSDelayUs = getPendingAudioPlayoutDurationUs(ALooper::GetNowUs());
846            }
847            notifyEOS(true /* audio */, entry->mFinalResult, postEOSDelayUs);
848
849            mAudioQueue.erase(mAudioQueue.begin());
850            entry = NULL;
851            if (mAudioSink->needsTrailingPadding()) {
852                // If we're not in gapless playback (i.e. through setNextPlayer), we
853                // need to stop the track here, because that will play out the last
854                // little bit at the end of the file. Otherwise short files won't play.
855                mAudioSink->stop();
856                mNumFramesWritten = 0;
857            }
858            return false;
859        }
860
861        // ignore 0-sized buffer which could be EOS marker with no data
862        if (entry->mOffset == 0 && entry->mBuffer->size() > 0) {
863            int64_t mediaTimeUs;
864            CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
865            ALOGV("onDrainAudioQueue: rendering audio at media time %.2f secs",
866                    mediaTimeUs / 1E6);
867            onNewAudioMediaTime(mediaTimeUs);
868        }
869
870        size_t copy = entry->mBuffer->size() - entry->mOffset;
871
872        ssize_t written = mAudioSink->write(entry->mBuffer->data() + entry->mOffset,
873                                            copy, false /* blocking */);
874        if (written < 0) {
875            // An error in AudioSink write. Perhaps the AudioSink was not properly opened.
876            if (written == WOULD_BLOCK) {
877                ALOGV("AudioSink write would block when writing %zu bytes", copy);
878            } else {
879                ALOGE("AudioSink write error(%zd) when writing %zu bytes", written, copy);
880                notifyAudioTearDown();
881            }
882            break;
883        }
884
885        entry->mOffset += written;
886        if (entry->mOffset == entry->mBuffer->size()) {
887            entry->mNotifyConsumed->post();
888            mAudioQueue.erase(mAudioQueue.begin());
889
890            entry = NULL;
891        }
892
893        size_t copiedFrames = written / mAudioSink->frameSize();
894        mNumFramesWritten += copiedFrames;
895
896        {
897            Mutex::Autolock autoLock(mLock);
898            notifyIfMediaRenderingStarted_l();
899        }
900
901        if (written != (ssize_t)copy) {
902            // A short count was received from AudioSink::write()
903            //
904            // AudioSink write is called in non-blocking mode.
905            // It may return with a short count when:
906            //
907            // 1) Size to be copied is not a multiple of the frame size. We consider this fatal.
908            // 2) The data to be copied exceeds the available buffer in AudioSink.
909            // 3) An error occurs and data has been partially copied to the buffer in AudioSink.
910            // 4) AudioSink is an AudioCache for data retrieval, and the AudioCache is exceeded.
911
912            // (Case 1)
913            // Must be a multiple of the frame size.  If it is not a multiple of a frame size, it
914            // needs to fail, as we should not carry over fractional frames between calls.
915            CHECK_EQ(copy % mAudioSink->frameSize(), 0);
916
917            // (Case 2, 3, 4)
918            // Return early to the caller.
919            // Beware of calling immediately again as this may busy-loop if you are not careful.
920            ALOGV("AudioSink write short frame count %zd < %zu", written, copy);
921            break;
922        }
923    }
924    int64_t maxTimeMedia;
925    {
926        Mutex::Autolock autoLock(mLock);
927        maxTimeMedia =
928            mAnchorTimeMediaUs +
929                    (int64_t)(max((long long)mNumFramesWritten - mAnchorNumFramesWritten, 0LL)
930                            * 1000LL * mAudioSink->msecsPerFrame());
931    }
932    mMediaClock->updateMaxTimeMedia(maxTimeMedia);
933
934    // calculate whether we need to reschedule another write.
935    bool reschedule = !mAudioQueue.empty()
936            && (!mPaused
937                || prevFramesWritten != mNumFramesWritten); // permit pause to fill buffers
938    //ALOGD("reschedule:%d  empty:%d  mPaused:%d  prevFramesWritten:%u  mNumFramesWritten:%u",
939    //        reschedule, mAudioQueue.empty(), mPaused, prevFramesWritten, mNumFramesWritten);
940    return reschedule;
941}
942
943int64_t NuPlayer::Renderer::getDurationUsIfPlayedAtSampleRate(uint32_t numFrames) {
944    int32_t sampleRate = offloadingAudio() ?
945            mCurrentOffloadInfo.sample_rate : mCurrentPcmInfo.mSampleRate;
946    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
947    return (int64_t)((int32_t)numFrames * 1000000LL / sampleRate);
948}
949
950// Calculate duration of pending samples if played at normal rate (i.e., 1.0).
951int64_t NuPlayer::Renderer::getPendingAudioPlayoutDurationUs(int64_t nowUs) {
952    int64_t writtenAudioDurationUs = getDurationUsIfPlayedAtSampleRate(mNumFramesWritten);
953    return writtenAudioDurationUs - getPlayedOutAudioDurationUs(nowUs);
954}
955
956int64_t NuPlayer::Renderer::getRealTimeUs(int64_t mediaTimeUs, int64_t nowUs) {
957    int64_t realUs;
958    if (mMediaClock->getRealTimeFor(mediaTimeUs, &realUs) != OK) {
959        // If failed to get current position, e.g. due to audio clock is
960        // not ready, then just play out video immediately without delay.
961        return nowUs;
962    }
963    return realUs;
964}
965
966void NuPlayer::Renderer::onNewAudioMediaTime(int64_t mediaTimeUs) {
967    Mutex::Autolock autoLock(mLock);
968    // TRICKY: vorbis decoder generates multiple frames with the same
969    // timestamp, so only update on the first frame with a given timestamp
970    if (mediaTimeUs == mAnchorTimeMediaUs) {
971        return;
972    }
973    setAudioFirstAnchorTimeIfNeeded_l(mediaTimeUs);
974    int64_t nowUs = ALooper::GetNowUs();
975    int64_t nowMediaUs = mediaTimeUs - getPendingAudioPlayoutDurationUs(nowUs);
976    mMediaClock->updateAnchor(nowMediaUs, nowUs, mediaTimeUs);
977    mAnchorNumFramesWritten = mNumFramesWritten;
978    mAnchorTimeMediaUs = mediaTimeUs;
979}
980
981// Called without mLock acquired.
982void NuPlayer::Renderer::postDrainVideoQueue() {
983    if (mDrainVideoQueuePending
984            || getSyncQueues()
985            || (mPaused && mVideoSampleReceived)) {
986        return;
987    }
988
989    if (mVideoQueue.empty()) {
990        return;
991    }
992
993    QueueEntry &entry = *mVideoQueue.begin();
994
995    sp<AMessage> msg = new AMessage(kWhatDrainVideoQueue, this);
996    msg->setInt32("drainGeneration", getDrainGeneration(false /* audio */));
997
998    if (entry.mBuffer == NULL) {
999        // EOS doesn't carry a timestamp.
1000        msg->post();
1001        mDrainVideoQueuePending = true;
1002        return;
1003    }
1004
1005    int64_t delayUs;
1006    int64_t nowUs = ALooper::GetNowUs();
1007    int64_t realTimeUs;
1008    if (mFlags & FLAG_REAL_TIME) {
1009        int64_t mediaTimeUs;
1010        CHECK(entry.mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
1011        realTimeUs = mediaTimeUs;
1012    } else {
1013        int64_t mediaTimeUs;
1014        CHECK(entry.mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
1015
1016        {
1017            Mutex::Autolock autoLock(mLock);
1018            if (mAnchorTimeMediaUs < 0) {
1019                mMediaClock->updateAnchor(mediaTimeUs, nowUs, mediaTimeUs);
1020                mAnchorTimeMediaUs = mediaTimeUs;
1021                realTimeUs = nowUs;
1022            } else {
1023                realTimeUs = getRealTimeUs(mediaTimeUs, nowUs);
1024            }
1025        }
1026        if (!mHasAudio) {
1027            // smooth out videos >= 10fps
1028            mMediaClock->updateMaxTimeMedia(mediaTimeUs + 100000);
1029        }
1030
1031        // Heuristics to handle situation when media time changed without a
1032        // discontinuity. If we have not drained an audio buffer that was
1033        // received after this buffer, repost in 10 msec. Otherwise repost
1034        // in 500 msec.
1035        delayUs = realTimeUs - nowUs;
1036        if (delayUs > 500000) {
1037            int64_t postDelayUs = 500000;
1038            if (mHasAudio && (mLastAudioBufferDrained - entry.mBufferOrdinal) <= 0) {
1039                postDelayUs = 10000;
1040            }
1041            msg->setWhat(kWhatPostDrainVideoQueue);
1042            msg->post(postDelayUs);
1043            mVideoScheduler->restart();
1044            ALOGI("possible video time jump of %dms, retrying in %dms",
1045                    (int)(delayUs / 1000), (int)(postDelayUs / 1000));
1046            mDrainVideoQueuePending = true;
1047            return;
1048        }
1049    }
1050
1051    realTimeUs = mVideoScheduler->schedule(realTimeUs * 1000) / 1000;
1052    int64_t twoVsyncsUs = 2 * (mVideoScheduler->getVsyncPeriod() / 1000);
1053
1054    delayUs = realTimeUs - nowUs;
1055
1056    ALOGW_IF(delayUs > 500000, "unusually high delayUs: %" PRId64, delayUs);
1057    // post 2 display refreshes before rendering is due
1058    msg->post(delayUs > twoVsyncsUs ? delayUs - twoVsyncsUs : 0);
1059
1060    mDrainVideoQueuePending = true;
1061}
1062
1063void NuPlayer::Renderer::onDrainVideoQueue() {
1064    if (mVideoQueue.empty()) {
1065        return;
1066    }
1067
1068    QueueEntry *entry = &*mVideoQueue.begin();
1069
1070    if (entry->mBuffer == NULL) {
1071        // EOS
1072
1073        notifyEOS(false /* audio */, entry->mFinalResult);
1074
1075        mVideoQueue.erase(mVideoQueue.begin());
1076        entry = NULL;
1077
1078        setVideoLateByUs(0);
1079        return;
1080    }
1081
1082    int64_t nowUs = -1;
1083    int64_t realTimeUs;
1084    if (mFlags & FLAG_REAL_TIME) {
1085        CHECK(entry->mBuffer->meta()->findInt64("timeUs", &realTimeUs));
1086    } else {
1087        int64_t mediaTimeUs;
1088        CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
1089
1090        nowUs = ALooper::GetNowUs();
1091        realTimeUs = getRealTimeUs(mediaTimeUs, nowUs);
1092    }
1093
1094    bool tooLate = false;
1095
1096    if (!mPaused) {
1097        if (nowUs == -1) {
1098            nowUs = ALooper::GetNowUs();
1099        }
1100        setVideoLateByUs(nowUs - realTimeUs);
1101        tooLate = (mVideoLateByUs > 40000);
1102
1103        if (tooLate) {
1104            ALOGV("video late by %lld us (%.2f secs)",
1105                 (long long)mVideoLateByUs, mVideoLateByUs / 1E6);
1106        } else {
1107            int64_t mediaUs = 0;
1108            mMediaClock->getMediaTime(realTimeUs, &mediaUs);
1109            ALOGV("rendering video at media time %.2f secs",
1110                    (mFlags & FLAG_REAL_TIME ? realTimeUs :
1111                    mediaUs) / 1E6);
1112        }
1113    } else {
1114        setVideoLateByUs(0);
1115        if (!mVideoSampleReceived && !mHasAudio) {
1116            // This will ensure that the first frame after a flush won't be used as anchor
1117            // when renderer is in paused state, because resume can happen any time after seek.
1118            Mutex::Autolock autoLock(mLock);
1119            clearAnchorTime_l();
1120        }
1121    }
1122
1123    entry->mNotifyConsumed->setInt64("timestampNs", realTimeUs * 1000ll);
1124    entry->mNotifyConsumed->setInt32("render", !tooLate);
1125    entry->mNotifyConsumed->post();
1126    mVideoQueue.erase(mVideoQueue.begin());
1127    entry = NULL;
1128
1129    mVideoSampleReceived = true;
1130
1131    if (!mPaused) {
1132        if (!mVideoRenderingStarted) {
1133            mVideoRenderingStarted = true;
1134            notifyVideoRenderingStart();
1135        }
1136        Mutex::Autolock autoLock(mLock);
1137        notifyIfMediaRenderingStarted_l();
1138    }
1139}
1140
1141void NuPlayer::Renderer::notifyVideoRenderingStart() {
1142    sp<AMessage> notify = mNotify->dup();
1143    notify->setInt32("what", kWhatVideoRenderingStart);
1144    notify->post();
1145}
1146
1147void NuPlayer::Renderer::notifyEOS(bool audio, status_t finalResult, int64_t delayUs) {
1148    sp<AMessage> notify = mNotify->dup();
1149    notify->setInt32("what", kWhatEOS);
1150    notify->setInt32("audio", static_cast<int32_t>(audio));
1151    notify->setInt32("finalResult", finalResult);
1152    notify->post(delayUs);
1153}
1154
1155void NuPlayer::Renderer::notifyAudioTearDown() {
1156    (new AMessage(kWhatAudioTearDown, this))->post();
1157}
1158
1159void NuPlayer::Renderer::onQueueBuffer(const sp<AMessage> &msg) {
1160    int32_t audio;
1161    CHECK(msg->findInt32("audio", &audio));
1162
1163    if (dropBufferIfStale(audio, msg)) {
1164        return;
1165    }
1166
1167    if (audio) {
1168        mHasAudio = true;
1169    } else {
1170        mHasVideo = true;
1171    }
1172
1173    if (mHasVideo) {
1174        if (mVideoScheduler == NULL) {
1175            mVideoScheduler = new VideoFrameScheduler();
1176            mVideoScheduler->init();
1177        }
1178    }
1179
1180    sp<ABuffer> buffer;
1181    CHECK(msg->findBuffer("buffer", &buffer));
1182
1183    sp<AMessage> notifyConsumed;
1184    CHECK(msg->findMessage("notifyConsumed", &notifyConsumed));
1185
1186    QueueEntry entry;
1187    entry.mBuffer = buffer;
1188    entry.mNotifyConsumed = notifyConsumed;
1189    entry.mOffset = 0;
1190    entry.mFinalResult = OK;
1191    entry.mBufferOrdinal = ++mTotalBuffersQueued;
1192
1193    if (audio) {
1194        Mutex::Autolock autoLock(mLock);
1195        mAudioQueue.push_back(entry);
1196        postDrainAudioQueue_l();
1197    } else {
1198        mVideoQueue.push_back(entry);
1199        postDrainVideoQueue();
1200    }
1201
1202    Mutex::Autolock autoLock(mLock);
1203    if (!mSyncQueues || mAudioQueue.empty() || mVideoQueue.empty()) {
1204        return;
1205    }
1206
1207    sp<ABuffer> firstAudioBuffer = (*mAudioQueue.begin()).mBuffer;
1208    sp<ABuffer> firstVideoBuffer = (*mVideoQueue.begin()).mBuffer;
1209
1210    if (firstAudioBuffer == NULL || firstVideoBuffer == NULL) {
1211        // EOS signalled on either queue.
1212        syncQueuesDone_l();
1213        return;
1214    }
1215
1216    int64_t firstAudioTimeUs;
1217    int64_t firstVideoTimeUs;
1218    CHECK(firstAudioBuffer->meta()
1219            ->findInt64("timeUs", &firstAudioTimeUs));
1220    CHECK(firstVideoBuffer->meta()
1221            ->findInt64("timeUs", &firstVideoTimeUs));
1222
1223    int64_t diff = firstVideoTimeUs - firstAudioTimeUs;
1224
1225    ALOGV("queueDiff = %.2f secs", diff / 1E6);
1226
1227    if (diff > 100000ll) {
1228        // Audio data starts More than 0.1 secs before video.
1229        // Drop some audio.
1230
1231        (*mAudioQueue.begin()).mNotifyConsumed->post();
1232        mAudioQueue.erase(mAudioQueue.begin());
1233        return;
1234    }
1235
1236    syncQueuesDone_l();
1237}
1238
1239void NuPlayer::Renderer::syncQueuesDone_l() {
1240    if (!mSyncQueues) {
1241        return;
1242    }
1243
1244    mSyncQueues = false;
1245
1246    if (!mAudioQueue.empty()) {
1247        postDrainAudioQueue_l();
1248    }
1249
1250    if (!mVideoQueue.empty()) {
1251        mLock.unlock();
1252        postDrainVideoQueue();
1253        mLock.lock();
1254    }
1255}
1256
1257void NuPlayer::Renderer::onQueueEOS(const sp<AMessage> &msg) {
1258    int32_t audio;
1259    CHECK(msg->findInt32("audio", &audio));
1260
1261    if (dropBufferIfStale(audio, msg)) {
1262        return;
1263    }
1264
1265    int32_t finalResult;
1266    CHECK(msg->findInt32("finalResult", &finalResult));
1267
1268    QueueEntry entry;
1269    entry.mOffset = 0;
1270    entry.mFinalResult = finalResult;
1271
1272    if (audio) {
1273        Mutex::Autolock autoLock(mLock);
1274        if (mAudioQueue.empty() && mSyncQueues) {
1275            syncQueuesDone_l();
1276        }
1277        mAudioQueue.push_back(entry);
1278        postDrainAudioQueue_l();
1279    } else {
1280        if (mVideoQueue.empty() && getSyncQueues()) {
1281            Mutex::Autolock autoLock(mLock);
1282            syncQueuesDone_l();
1283        }
1284        mVideoQueue.push_back(entry);
1285        postDrainVideoQueue();
1286    }
1287}
1288
1289void NuPlayer::Renderer::onFlush(const sp<AMessage> &msg) {
1290    int32_t audio, notifyComplete;
1291    CHECK(msg->findInt32("audio", &audio));
1292
1293    {
1294        Mutex::Autolock autoLock(mLock);
1295        if (audio) {
1296            notifyComplete = mNotifyCompleteAudio;
1297            mNotifyCompleteAudio = false;
1298        } else {
1299            notifyComplete = mNotifyCompleteVideo;
1300            mNotifyCompleteVideo = false;
1301        }
1302
1303        // If we're currently syncing the queues, i.e. dropping audio while
1304        // aligning the first audio/video buffer times and only one of the
1305        // two queues has data, we may starve that queue by not requesting
1306        // more buffers from the decoder. If the other source then encounters
1307        // a discontinuity that leads to flushing, we'll never find the
1308        // corresponding discontinuity on the other queue.
1309        // Therefore we'll stop syncing the queues if at least one of them
1310        // is flushed.
1311        syncQueuesDone_l();
1312        clearAnchorTime_l();
1313    }
1314
1315    ALOGV("flushing %s", audio ? "audio" : "video");
1316    if (audio) {
1317        {
1318            Mutex::Autolock autoLock(mLock);
1319            flushQueue(&mAudioQueue);
1320
1321            ++mAudioDrainGeneration;
1322            prepareForMediaRenderingStart_l();
1323
1324            // the frame count will be reset after flush.
1325            clearAudioFirstAnchorTime_l();
1326        }
1327
1328        mDrainAudioQueuePending = false;
1329
1330        if (offloadingAudio()) {
1331            mAudioSink->pause();
1332            mAudioSink->flush();
1333            if (!mPaused) {
1334                mAudioSink->start();
1335            }
1336        } else {
1337            mAudioSink->pause();
1338            mAudioSink->flush();
1339            // Call stop() to signal to the AudioSink to completely fill the
1340            // internal buffer before resuming playback.
1341            mAudioSink->stop();
1342            if (!mPaused) {
1343                mAudioSink->start();
1344            }
1345            mNumFramesWritten = 0;
1346        }
1347    } else {
1348        flushQueue(&mVideoQueue);
1349
1350        mDrainVideoQueuePending = false;
1351
1352        if (mVideoScheduler != NULL) {
1353            mVideoScheduler->restart();
1354        }
1355
1356        Mutex::Autolock autoLock(mLock);
1357        ++mVideoDrainGeneration;
1358        prepareForMediaRenderingStart_l();
1359    }
1360
1361    mVideoSampleReceived = false;
1362
1363    if (notifyComplete) {
1364        notifyFlushComplete(audio);
1365    }
1366}
1367
1368void NuPlayer::Renderer::flushQueue(List<QueueEntry> *queue) {
1369    while (!queue->empty()) {
1370        QueueEntry *entry = &*queue->begin();
1371
1372        if (entry->mBuffer != NULL) {
1373            entry->mNotifyConsumed->post();
1374        }
1375
1376        queue->erase(queue->begin());
1377        entry = NULL;
1378    }
1379}
1380
1381void NuPlayer::Renderer::notifyFlushComplete(bool audio) {
1382    sp<AMessage> notify = mNotify->dup();
1383    notify->setInt32("what", kWhatFlushComplete);
1384    notify->setInt32("audio", static_cast<int32_t>(audio));
1385    notify->post();
1386}
1387
1388bool NuPlayer::Renderer::dropBufferIfStale(
1389        bool audio, const sp<AMessage> &msg) {
1390    int32_t queueGeneration;
1391    CHECK(msg->findInt32("queueGeneration", &queueGeneration));
1392
1393    if (queueGeneration == getQueueGeneration(audio)) {
1394        return false;
1395    }
1396
1397    sp<AMessage> notifyConsumed;
1398    if (msg->findMessage("notifyConsumed", &notifyConsumed)) {
1399        notifyConsumed->post();
1400    }
1401
1402    return true;
1403}
1404
1405void NuPlayer::Renderer::onAudioSinkChanged() {
1406    if (offloadingAudio()) {
1407        return;
1408    }
1409    CHECK(!mDrainAudioQueuePending);
1410    mNumFramesWritten = 0;
1411    {
1412        Mutex::Autolock autoLock(mLock);
1413        mAnchorNumFramesWritten = -1;
1414    }
1415    uint32_t written;
1416    if (mAudioSink->getFramesWritten(&written) == OK) {
1417        mNumFramesWritten = written;
1418    }
1419}
1420
1421void NuPlayer::Renderer::onDisableOffloadAudio() {
1422    Mutex::Autolock autoLock(mLock);
1423    mFlags &= ~FLAG_OFFLOAD_AUDIO;
1424    ++mAudioDrainGeneration;
1425    if (mAudioRenderingStartGeneration != -1) {
1426        prepareForMediaRenderingStart_l();
1427    }
1428}
1429
1430void NuPlayer::Renderer::onEnableOffloadAudio() {
1431    Mutex::Autolock autoLock(mLock);
1432    mFlags |= FLAG_OFFLOAD_AUDIO;
1433    ++mAudioDrainGeneration;
1434    if (mAudioRenderingStartGeneration != -1) {
1435        prepareForMediaRenderingStart_l();
1436    }
1437}
1438
1439void NuPlayer::Renderer::onPause() {
1440    if (mPaused) {
1441        return;
1442    }
1443
1444    {
1445        Mutex::Autolock autoLock(mLock);
1446        // we do not increment audio drain generation so that we fill audio buffer during pause.
1447        ++mVideoDrainGeneration;
1448        prepareForMediaRenderingStart_l();
1449        mPaused = true;
1450        mMediaClock->setPlaybackRate(0.0);
1451    }
1452
1453    mDrainAudioQueuePending = false;
1454    mDrainVideoQueuePending = false;
1455
1456    if (mHasAudio) {
1457        mAudioSink->pause();
1458        startAudioOffloadPauseTimeout();
1459    }
1460
1461    ALOGV("now paused audio queue has %zu entries, video has %zu entries",
1462          mAudioQueue.size(), mVideoQueue.size());
1463}
1464
1465void NuPlayer::Renderer::onResume() {
1466    if (!mPaused) {
1467        return;
1468    }
1469
1470    if (mHasAudio) {
1471        cancelAudioOffloadPauseTimeout();
1472        status_t err = mAudioSink->start();
1473        if (err != OK) {
1474            notifyAudioTearDown();
1475        }
1476    }
1477
1478    {
1479        Mutex::Autolock autoLock(mLock);
1480        mPaused = false;
1481
1482        // configure audiosink as we did not do it when pausing
1483        if (mAudioSink != NULL && mAudioSink->ready()) {
1484            mAudioSink->setPlaybackRate(mPlaybackSettings);
1485        }
1486
1487        mMediaClock->setPlaybackRate(mPlaybackRate);
1488
1489        if (!mAudioQueue.empty()) {
1490            postDrainAudioQueue_l();
1491        }
1492    }
1493
1494    if (!mVideoQueue.empty()) {
1495        postDrainVideoQueue();
1496    }
1497}
1498
1499void NuPlayer::Renderer::onSetVideoFrameRate(float fps) {
1500    if (mVideoScheduler == NULL) {
1501        mVideoScheduler = new VideoFrameScheduler();
1502    }
1503    mVideoScheduler->init(fps);
1504}
1505
1506int32_t NuPlayer::Renderer::getQueueGeneration(bool audio) {
1507    Mutex::Autolock autoLock(mLock);
1508    return (audio ? mAudioQueueGeneration : mVideoQueueGeneration);
1509}
1510
1511int32_t NuPlayer::Renderer::getDrainGeneration(bool audio) {
1512    Mutex::Autolock autoLock(mLock);
1513    return (audio ? mAudioDrainGeneration : mVideoDrainGeneration);
1514}
1515
1516bool NuPlayer::Renderer::getSyncQueues() {
1517    Mutex::Autolock autoLock(mLock);
1518    return mSyncQueues;
1519}
1520
1521// TODO: Remove unnecessary calls to getPlayedOutAudioDurationUs()
1522// as it acquires locks and may query the audio driver.
1523//
1524// Some calls could conceivably retrieve extrapolated data instead of
1525// accessing getTimestamp() or getPosition() every time a data buffer with
1526// a media time is received.
1527//
1528// Calculate duration of played samples if played at normal rate (i.e., 1.0).
1529int64_t NuPlayer::Renderer::getPlayedOutAudioDurationUs(int64_t nowUs) {
1530    uint32_t numFramesPlayed;
1531    int64_t numFramesPlayedAt;
1532    AudioTimestamp ts;
1533    static const int64_t kStaleTimestamp100ms = 100000;
1534
1535    status_t res = mAudioSink->getTimestamp(ts);
1536    if (res == OK) {                 // case 1: mixing audio tracks and offloaded tracks.
1537        numFramesPlayed = ts.mPosition;
1538        numFramesPlayedAt =
1539            ts.mTime.tv_sec * 1000000LL + ts.mTime.tv_nsec / 1000;
1540        const int64_t timestampAge = nowUs - numFramesPlayedAt;
1541        if (timestampAge > kStaleTimestamp100ms) {
1542            // This is an audio FIXME.
1543            // getTimestamp returns a timestamp which may come from audio mixing threads.
1544            // After pausing, the MixerThread may go idle, thus the mTime estimate may
1545            // become stale. Assuming that the MixerThread runs 20ms, with FastMixer at 5ms,
1546            // the max latency should be about 25ms with an average around 12ms (to be verified).
1547            // For safety we use 100ms.
1548            ALOGV("getTimestamp: returned stale timestamp nowUs(%lld) numFramesPlayedAt(%lld)",
1549                    (long long)nowUs, (long long)numFramesPlayedAt);
1550            numFramesPlayedAt = nowUs - kStaleTimestamp100ms;
1551        }
1552        //ALOGD("getTimestamp: OK %d %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1553    } else if (res == WOULD_BLOCK) { // case 2: transitory state on start of a new track
1554        numFramesPlayed = 0;
1555        numFramesPlayedAt = nowUs;
1556        //ALOGD("getTimestamp: WOULD_BLOCK %d %lld",
1557        //        numFramesPlayed, (long long)numFramesPlayedAt);
1558    } else {                         // case 3: transitory at new track or audio fast tracks.
1559        res = mAudioSink->getPosition(&numFramesPlayed);
1560        CHECK_EQ(res, (status_t)OK);
1561        numFramesPlayedAt = nowUs;
1562        numFramesPlayedAt += 1000LL * mAudioSink->latency() / 2; /* XXX */
1563        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1564    }
1565
1566    //CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
1567    int64_t durationUs = getDurationUsIfPlayedAtSampleRate(numFramesPlayed)
1568            + nowUs - numFramesPlayedAt;
1569    if (durationUs < 0) {
1570        // Occurs when numFramesPlayed position is very small and the following:
1571        // (1) In case 1, the time nowUs is computed before getTimestamp() is called and
1572        //     numFramesPlayedAt is greater than nowUs by time more than numFramesPlayed.
1573        // (2) In case 3, using getPosition and adding mAudioSink->latency() to
1574        //     numFramesPlayedAt, by a time amount greater than numFramesPlayed.
1575        //
1576        // Both of these are transitory conditions.
1577        ALOGV("getPlayedOutAudioDurationUs: negative duration %lld set to zero", (long long)durationUs);
1578        durationUs = 0;
1579    }
1580    ALOGV("getPlayedOutAudioDurationUs(%lld) nowUs(%lld) frames(%u) framesAt(%lld)",
1581            (long long)durationUs, (long long)nowUs, numFramesPlayed, (long long)numFramesPlayedAt);
1582    return durationUs;
1583}
1584
1585void NuPlayer::Renderer::onAudioTearDown(AudioTearDownReason reason) {
1586    if (mAudioTornDown) {
1587        return;
1588    }
1589    mAudioTornDown = true;
1590
1591    int64_t currentPositionUs;
1592    sp<AMessage> notify = mNotify->dup();
1593    if (getCurrentPosition(&currentPositionUs) == OK) {
1594        notify->setInt64("positionUs", currentPositionUs);
1595    }
1596
1597    mAudioSink->stop();
1598    mAudioSink->flush();
1599
1600    notify->setInt32("what", kWhatAudioTearDown);
1601    notify->setInt32("reason", reason);
1602    notify->post();
1603}
1604
1605void NuPlayer::Renderer::startAudioOffloadPauseTimeout() {
1606    if (offloadingAudio()) {
1607        mWakeLock->acquire();
1608        sp<AMessage> msg = new AMessage(kWhatAudioOffloadPauseTimeout, this);
1609        msg->setInt32("drainGeneration", mAudioOffloadPauseTimeoutGeneration);
1610        msg->post(kOffloadPauseMaxUs);
1611    }
1612}
1613
1614void NuPlayer::Renderer::cancelAudioOffloadPauseTimeout() {
1615    if (offloadingAudio()) {
1616        mWakeLock->release(true);
1617        ++mAudioOffloadPauseTimeoutGeneration;
1618    }
1619}
1620
1621status_t NuPlayer::Renderer::onOpenAudioSink(
1622        const sp<AMessage> &format,
1623        bool offloadOnly,
1624        bool hasVideo,
1625        uint32_t flags) {
1626    ALOGV("openAudioSink: offloadOnly(%d) offloadingAudio(%d)",
1627            offloadOnly, offloadingAudio());
1628    bool audioSinkChanged = false;
1629
1630    int32_t numChannels;
1631    CHECK(format->findInt32("channel-count", &numChannels));
1632
1633    int32_t channelMask;
1634    if (!format->findInt32("channel-mask", &channelMask)) {
1635        // signal to the AudioSink to derive the mask from count.
1636        channelMask = CHANNEL_MASK_USE_CHANNEL_ORDER;
1637    }
1638
1639    int32_t sampleRate;
1640    CHECK(format->findInt32("sample-rate", &sampleRate));
1641
1642    if (offloadingAudio()) {
1643        audio_format_t audioFormat = AUDIO_FORMAT_PCM_16_BIT;
1644        AString mime;
1645        CHECK(format->findString("mime", &mime));
1646        status_t err = mapMimeToAudioFormat(audioFormat, mime.c_str());
1647
1648        if (err != OK) {
1649            ALOGE("Couldn't map mime \"%s\" to a valid "
1650                    "audio_format", mime.c_str());
1651            onDisableOffloadAudio();
1652        } else {
1653            ALOGV("Mime \"%s\" mapped to audio_format 0x%x",
1654                    mime.c_str(), audioFormat);
1655
1656            int avgBitRate = -1;
1657            format->findInt32("bit-rate", &avgBitRate);
1658
1659            int32_t aacProfile = -1;
1660            if (audioFormat == AUDIO_FORMAT_AAC
1661                    && format->findInt32("aac-profile", &aacProfile)) {
1662                // Redefine AAC format as per aac profile
1663                mapAACProfileToAudioFormat(
1664                        audioFormat,
1665                        aacProfile);
1666            }
1667
1668            audio_offload_info_t offloadInfo = AUDIO_INFO_INITIALIZER;
1669            offloadInfo.duration_us = -1;
1670            format->findInt64(
1671                    "durationUs", &offloadInfo.duration_us);
1672            offloadInfo.sample_rate = sampleRate;
1673            offloadInfo.channel_mask = channelMask;
1674            offloadInfo.format = audioFormat;
1675            offloadInfo.stream_type = AUDIO_STREAM_MUSIC;
1676            offloadInfo.bit_rate = avgBitRate;
1677            offloadInfo.has_video = hasVideo;
1678            offloadInfo.is_streaming = true;
1679
1680            if (memcmp(&mCurrentOffloadInfo, &offloadInfo, sizeof(offloadInfo)) == 0) {
1681                ALOGV("openAudioSink: no change in offload mode");
1682                // no change from previous configuration, everything ok.
1683                return OK;
1684            }
1685            mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1686
1687            ALOGV("openAudioSink: try to open AudioSink in offload mode");
1688            uint32_t offloadFlags = flags;
1689            offloadFlags |= AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1690            offloadFlags &= ~AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
1691            audioSinkChanged = true;
1692            mAudioSink->close();
1693
1694            err = mAudioSink->open(
1695                    sampleRate,
1696                    numChannels,
1697                    (audio_channel_mask_t)channelMask,
1698                    audioFormat,
1699                    0 /* bufferCount - unused */,
1700                    &NuPlayer::Renderer::AudioSinkCallback,
1701                    this,
1702                    (audio_output_flags_t)offloadFlags,
1703                    &offloadInfo);
1704
1705            if (err == OK) {
1706                err = mAudioSink->setPlaybackRate(mPlaybackSettings);
1707            }
1708
1709            if (err == OK) {
1710                // If the playback is offloaded to h/w, we pass
1711                // the HAL some metadata information.
1712                // We don't want to do this for PCM because it
1713                // will be going through the AudioFlinger mixer
1714                // before reaching the hardware.
1715                // TODO
1716                mCurrentOffloadInfo = offloadInfo;
1717                if (!mPaused) { // for preview mode, don't start if paused
1718                    err = mAudioSink->start();
1719                }
1720                ALOGV_IF(err == OK, "openAudioSink: offload succeeded");
1721            }
1722            if (err != OK) {
1723                // Clean up, fall back to non offload mode.
1724                mAudioSink->close();
1725                onDisableOffloadAudio();
1726                mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1727                ALOGV("openAudioSink: offload failed");
1728            } else {
1729                mUseAudioCallback = true;  // offload mode transfers data through callback
1730                ++mAudioDrainGeneration;  // discard pending kWhatDrainAudioQueue message.
1731            }
1732        }
1733    }
1734    if (!offloadOnly && !offloadingAudio()) {
1735        ALOGV("openAudioSink: open AudioSink in NON-offload mode");
1736        uint32_t pcmFlags = flags;
1737        pcmFlags &= ~AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1738
1739        const PcmInfo info = {
1740                (audio_channel_mask_t)channelMask,
1741                (audio_output_flags_t)pcmFlags,
1742                AUDIO_FORMAT_PCM_16_BIT, // TODO: change to audioFormat
1743                numChannels,
1744                sampleRate
1745        };
1746        if (memcmp(&mCurrentPcmInfo, &info, sizeof(info)) == 0) {
1747            ALOGV("openAudioSink: no change in pcm mode");
1748            // no change from previous configuration, everything ok.
1749            return OK;
1750        }
1751
1752        audioSinkChanged = true;
1753        mAudioSink->close();
1754        mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1755        // Note: It is possible to set up the callback, but not use it to send audio data.
1756        // This requires a fix in AudioSink to explicitly specify the transfer mode.
1757        mUseAudioCallback = getUseAudioCallbackSetting();
1758        if (mUseAudioCallback) {
1759            ++mAudioDrainGeneration;  // discard pending kWhatDrainAudioQueue message.
1760        }
1761
1762        // Compute the desired buffer size.
1763        // For callback mode, the amount of time before wakeup is about half the buffer size.
1764        const uint32_t frameCount =
1765                (unsigned long long)sampleRate * getAudioSinkPcmMsSetting() / 1000;
1766
1767        status_t err = mAudioSink->open(
1768                    sampleRate,
1769                    numChannels,
1770                    (audio_channel_mask_t)channelMask,
1771                    AUDIO_FORMAT_PCM_16_BIT,
1772                    0 /* bufferCount - unused */,
1773                    mUseAudioCallback ? &NuPlayer::Renderer::AudioSinkCallback : NULL,
1774                    mUseAudioCallback ? this : NULL,
1775                    (audio_output_flags_t)pcmFlags,
1776                    NULL,
1777                    true /* doNotReconnect */,
1778                    frameCount);
1779        if (err == OK) {
1780            err = mAudioSink->setPlaybackRate(mPlaybackSettings);
1781        }
1782        if (err != OK) {
1783            ALOGW("openAudioSink: non offloaded open failed status: %d", err);
1784            mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1785            return err;
1786        }
1787        mCurrentPcmInfo = info;
1788        if (!mPaused) { // for preview mode, don't start if paused
1789            mAudioSink->start();
1790        }
1791    }
1792    if (audioSinkChanged) {
1793        onAudioSinkChanged();
1794    }
1795    mAudioTornDown = false;
1796    return OK;
1797}
1798
1799void NuPlayer::Renderer::onCloseAudioSink() {
1800    mAudioSink->close();
1801    mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1802    mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1803}
1804
1805}  // namespace android
1806
1807