NuPlayerRenderer.cpp revision 288da02b1f074f9f3c191f1838f135d4633b3d34 
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
33#include <VideoFrameScheduler.h>
34
35#include <inttypes.h>
36
37namespace android {
38
39/*
40 * Example of common configuration settings in shell script form
41
42   #Turn offload audio off (use PCM for Play Music) -- AudioPolicyManager
43   adb shell setprop audio.offload.disable 1
44
45   #Allow offload audio with video (requires offloading to be enabled) -- AudioPolicyManager
46   adb shell setprop audio.offload.video 1
47
48   #Use audio callbacks for PCM data
49   adb shell setprop media.stagefright.audio.cbk 1
50
51   #Use deep buffer for PCM data with video (it is generally enabled for audio-only)
52   adb shell setprop media.stagefright.audio.deep 1
53
54   #Set size of buffers for pcm audio sink in msec (example: 1000 msec)
55   adb shell setprop media.stagefright.audio.sink 1000
56
57 * These configurations take effect for the next track played (not the current track).
58 */
59
60static inline bool getUseAudioCallbackSetting() {
61    return property_get_bool("media.stagefright.audio.cbk", false /* default_value */);
62}
63
64static inline int32_t getAudioSinkPcmMsSetting() {
65    return property_get_int32(
66            "media.stagefright.audio.sink", 500 /* default_value */);
67}
68
69// Maximum time in paused state when offloading audio decompression. When elapsed, the AudioSink
70// is closed to allow the audio DSP to power down.
71static const int64_t kOffloadPauseMaxUs = 10000000ll;
72
73// static
74const NuPlayer::Renderer::PcmInfo NuPlayer::Renderer::AUDIO_PCMINFO_INITIALIZER = {
75        AUDIO_CHANNEL_NONE,
76        AUDIO_OUTPUT_FLAG_NONE,
77        AUDIO_FORMAT_INVALID,
78        0, // mNumChannels
79        0 // mSampleRate
80};
81
82// static
83const int64_t NuPlayer::Renderer::kMinPositionUpdateDelayUs = 100000ll;
84
85NuPlayer::Renderer::Renderer(
86        const sp<MediaPlayerBase::AudioSink> &sink,
87        const sp<AMessage> &notify,
88        uint32_t flags)
89    : mAudioSink(sink),
90      mNotify(notify),
91      mFlags(flags),
92      mNumFramesWritten(0),
93      mDrainAudioQueuePending(false),
94      mDrainVideoQueuePending(false),
95      mAudioQueueGeneration(0),
96      mVideoQueueGeneration(0),
97      mAudioDrainGeneration(0),
98      mVideoDrainGeneration(0),
99      mPlaybackSettings(AUDIO_PLAYBACK_RATE_DEFAULT),
100      mAudioFirstAnchorTimeMediaUs(-1),
101      mAnchorTimeMediaUs(-1),
102      mAnchorNumFramesWritten(-1),
103      mVideoLateByUs(0ll),
104      mHasAudio(false),
105      mHasVideo(false),
106      mNotifyCompleteAudio(false),
107      mNotifyCompleteVideo(false),
108      mSyncQueues(false),
109      mPaused(false),
110      mVideoSampleReceived(false),
111      mVideoRenderingStarted(false),
112      mVideoRenderingStartGeneration(0),
113      mAudioRenderingStartGeneration(0),
114      mAudioOffloadPauseTimeoutGeneration(0),
115      mAudioTornDown(false),
116      mCurrentOffloadInfo(AUDIO_INFO_INITIALIZER),
117      mCurrentPcmInfo(AUDIO_PCMINFO_INITIALIZER),
118      mTotalBuffersQueued(0),
119      mLastAudioBufferDrained(0),
120      mUseAudioCallback(false),
121      mWakeLock(new AWakeLock()) {
122    mMediaClock = new MediaClock;
123    mPlaybackRate = mPlaybackSettings.mSpeed;
124    mMediaClock->setPlaybackRate(mPlaybackRate);
125}
126
127NuPlayer::Renderer::~Renderer() {
128    if (offloadingAudio()) {
129        mAudioSink->stop();
130        mAudioSink->flush();
131        mAudioSink->close();
132    }
133}
134
135void NuPlayer::Renderer::queueBuffer(
136        bool audio,
137        const sp<ABuffer> &buffer,
138        const sp<AMessage> &notifyConsumed) {
139    sp<AMessage> msg = new AMessage(kWhatQueueBuffer, this);
140    msg->setInt32("queueGeneration", getQueueGeneration(audio));
141    msg->setInt32("audio", static_cast<int32_t>(audio));
142    msg->setBuffer("buffer", buffer);
143    msg->setMessage("notifyConsumed", notifyConsumed);
144    msg->post();
145}
146
147void NuPlayer::Renderer::queueEOS(bool audio, status_t finalResult) {
148    CHECK_NE(finalResult, (status_t)OK);
149
150    sp<AMessage> msg = new AMessage(kWhatQueueEOS, this);
151    msg->setInt32("queueGeneration", getQueueGeneration(audio));
152    msg->setInt32("audio", static_cast<int32_t>(audio));
153    msg->setInt32("finalResult", finalResult);
154    msg->post();
155}
156
157status_t NuPlayer::Renderer::setPlaybackSettings(const AudioPlaybackRate &rate) {
158    sp<AMessage> msg = new AMessage(kWhatConfigPlayback, this);
159    writeToAMessage(msg, rate);
160    sp<AMessage> response;
161    status_t err = msg->postAndAwaitResponse(&response);
162    if (err == OK && response != NULL) {
163        CHECK(response->findInt32("err", &err));
164    }
165    return err;
166}
167
168status_t NuPlayer::Renderer::onConfigPlayback(const AudioPlaybackRate &rate /* sanitized */) {
169    if (rate.mSpeed == 0.f) {
170        onPause();
171        // don't call audiosink's setPlaybackRate if pausing, as pitch does not
172        // have to correspond to the any non-0 speed (e.g old speed). Keep
173        // settings nonetheless, using the old speed, in case audiosink changes.
174        AudioPlaybackRate newRate = rate;
175        newRate.mSpeed = mPlaybackSettings.mSpeed;
176        mPlaybackSettings = newRate;
177        return OK;
178    }
179
180    if (mAudioSink != NULL && mAudioSink->ready()) {
181        status_t err = mAudioSink->setPlaybackRate(rate);
182        if (err != OK) {
183            return err;
184        }
185    }
186    mPlaybackSettings = rate;
187    mPlaybackRate = rate.mSpeed;
188    mMediaClock->setPlaybackRate(mPlaybackRate);
189    return OK;
190}
191
192status_t NuPlayer::Renderer::getPlaybackSettings(AudioPlaybackRate *rate /* nonnull */) {
193    sp<AMessage> msg = new AMessage(kWhatGetPlaybackSettings, this);
194    sp<AMessage> response;
195    status_t err = msg->postAndAwaitResponse(&response);
196    if (err == OK && response != NULL) {
197        CHECK(response->findInt32("err", &err));
198        if (err == OK) {
199            readFromAMessage(response, rate);
200        }
201    }
202    return err;
203}
204
205status_t NuPlayer::Renderer::onGetPlaybackSettings(AudioPlaybackRate *rate /* nonnull */) {
206    if (mAudioSink != NULL && mAudioSink->ready()) {
207        status_t err = mAudioSink->getPlaybackRate(rate);
208        if (err == OK) {
209            if (!isAudioPlaybackRateEqual(*rate, mPlaybackSettings)) {
210                ALOGW("correcting mismatch in internal/external playback rate");
211            }
212            // get playback settings used by audiosink, as it may be
213            // slightly off due to audiosink not taking small changes.
214            mPlaybackSettings = *rate;
215            if (mPaused) {
216                rate->mSpeed = 0.f;
217            }
218        }
219        return err;
220    }
221    *rate = mPlaybackSettings;
222    return OK;
223}
224
225status_t NuPlayer::Renderer::setSyncSettings(const AVSyncSettings &sync, float videoFpsHint) {
226    sp<AMessage> msg = new AMessage(kWhatConfigSync, this);
227    writeToAMessage(msg, sync, videoFpsHint);
228    sp<AMessage> response;
229    status_t err = msg->postAndAwaitResponse(&response);
230    if (err == OK && response != NULL) {
231        CHECK(response->findInt32("err", &err));
232    }
233    return err;
234}
235
236status_t NuPlayer::Renderer::onConfigSync(const AVSyncSettings &sync, float videoFpsHint __unused) {
237    if (sync.mSource != AVSYNC_SOURCE_DEFAULT) {
238        return BAD_VALUE;
239    }
240    // TODO: support sync sources
241    return INVALID_OPERATION;
242}
243
244status_t NuPlayer::Renderer::getSyncSettings(AVSyncSettings *sync, float *videoFps) {
245    sp<AMessage> msg = new AMessage(kWhatGetSyncSettings, this);
246    sp<AMessage> response;
247    status_t err = msg->postAndAwaitResponse(&response);
248    if (err == OK && response != NULL) {
249        CHECK(response->findInt32("err", &err));
250        if (err == OK) {
251            readFromAMessage(response, sync, videoFps);
252        }
253    }
254    return err;
255}
256
257status_t NuPlayer::Renderer::onGetSyncSettings(
258        AVSyncSettings *sync /* nonnull */, float *videoFps /* nonnull */) {
259    *sync = mSyncSettings;
260    *videoFps = -1.f;
261    return OK;
262}
263
264void NuPlayer::Renderer::flush(bool audio, bool notifyComplete) {
265    {
266        Mutex::Autolock autoLock(mLock);
267        if (audio) {
268            mNotifyCompleteAudio |= notifyComplete;
269            ++mAudioQueueGeneration;
270            ++mAudioDrainGeneration;
271        } else {
272            mNotifyCompleteVideo |= notifyComplete;
273            ++mVideoQueueGeneration;
274            ++mVideoDrainGeneration;
275        }
276
277        clearAnchorTime_l();
278        clearAudioFirstAnchorTime_l();
279        mVideoLateByUs = 0;
280        mSyncQueues = false;
281    }
282
283    sp<AMessage> msg = new AMessage(kWhatFlush, this);
284    msg->setInt32("audio", static_cast<int32_t>(audio));
285    msg->post();
286}
287
288void NuPlayer::Renderer::signalTimeDiscontinuity() {
289}
290
291void NuPlayer::Renderer::signalDisableOffloadAudio() {
292    (new AMessage(kWhatDisableOffloadAudio, this))->post();
293}
294
295void NuPlayer::Renderer::signalEnableOffloadAudio() {
296    (new AMessage(kWhatEnableOffloadAudio, this))->post();
297}
298
299void NuPlayer::Renderer::pause() {
300    (new AMessage(kWhatPause, this))->post();
301}
302
303void NuPlayer::Renderer::resume() {
304    (new AMessage(kWhatResume, this))->post();
305}
306
307void NuPlayer::Renderer::setVideoFrameRate(float fps) {
308    sp<AMessage> msg = new AMessage(kWhatSetVideoFrameRate, this);
309    msg->setFloat("frame-rate", fps);
310    msg->post();
311}
312
313// Called on any threads.
314status_t NuPlayer::Renderer::getCurrentPosition(int64_t *mediaUs) {
315    return mMediaClock->getMediaTime(ALooper::GetNowUs(), mediaUs);
316}
317
318void NuPlayer::Renderer::clearAudioFirstAnchorTime_l() {
319    mAudioFirstAnchorTimeMediaUs = -1;
320    mMediaClock->setStartingTimeMedia(-1);
321}
322
323void NuPlayer::Renderer::setAudioFirstAnchorTimeIfNeeded_l(int64_t mediaUs) {
324    if (mAudioFirstAnchorTimeMediaUs == -1) {
325        mAudioFirstAnchorTimeMediaUs = mediaUs;
326        mMediaClock->setStartingTimeMedia(mediaUs);
327    }
328}
329
330void NuPlayer::Renderer::clearAnchorTime_l() {
331    mMediaClock->clearAnchor();
332    mAnchorTimeMediaUs = -1;
333    mAnchorNumFramesWritten = -1;
334}
335
336void NuPlayer::Renderer::setVideoLateByUs(int64_t lateUs) {
337    Mutex::Autolock autoLock(mLock);
338    mVideoLateByUs = lateUs;
339}
340
341int64_t NuPlayer::Renderer::getVideoLateByUs() {
342    Mutex::Autolock autoLock(mLock);
343    return mVideoLateByUs;
344}
345
346status_t NuPlayer::Renderer::openAudioSink(
347        const sp<AMessage> &format,
348        bool offloadOnly,
349        bool hasVideo,
350        uint32_t flags,
351        bool *isOffloaded) {
352    sp<AMessage> msg = new AMessage(kWhatOpenAudioSink, this);
353    msg->setMessage("format", format);
354    msg->setInt32("offload-only", offloadOnly);
355    msg->setInt32("has-video", hasVideo);
356    msg->setInt32("flags", flags);
357
358    sp<AMessage> response;
359    msg->postAndAwaitResponse(&response);
360
361    int32_t err;
362    if (!response->findInt32("err", &err)) {
363        err = INVALID_OPERATION;
364    } else if (err == OK && isOffloaded != NULL) {
365        int32_t offload;
366        CHECK(response->findInt32("offload", &offload));
367        *isOffloaded = (offload != 0);
368    }
369    return err;
370}
371
372void NuPlayer::Renderer::closeAudioSink() {
373    sp<AMessage> msg = new AMessage(kWhatCloseAudioSink, this);
374
375    sp<AMessage> response;
376    msg->postAndAwaitResponse(&response);
377}
378
379void NuPlayer::Renderer::onMessageReceived(const sp<AMessage> &msg) {
380    switch (msg->what()) {
381        case kWhatOpenAudioSink:
382        {
383            sp<AMessage> format;
384            CHECK(msg->findMessage("format", &format));
385
386            int32_t offloadOnly;
387            CHECK(msg->findInt32("offload-only", &offloadOnly));
388
389            int32_t hasVideo;
390            CHECK(msg->findInt32("has-video", &hasVideo));
391
392            uint32_t flags;
393            CHECK(msg->findInt32("flags", (int32_t *)&flags));
394
395            status_t err = onOpenAudioSink(format, offloadOnly, hasVideo, flags);
396
397            sp<AMessage> response = new AMessage;
398            response->setInt32("err", err);
399            response->setInt32("offload", offloadingAudio());
400
401            sp<AReplyToken> replyID;
402            CHECK(msg->senderAwaitsResponse(&replyID));
403            response->postReply(replyID);
404
405            break;
406        }
407
408        case kWhatCloseAudioSink:
409        {
410            sp<AReplyToken> replyID;
411            CHECK(msg->senderAwaitsResponse(&replyID));
412
413            onCloseAudioSink();
414
415            sp<AMessage> response = new AMessage;
416            response->postReply(replyID);
417            break;
418        }
419
420        case kWhatStopAudioSink:
421        {
422            mAudioSink->stop();
423            break;
424        }
425
426        case kWhatDrainAudioQueue:
427        {
428            int32_t generation;
429            CHECK(msg->findInt32("drainGeneration", &generation));
430            if (generation != getDrainGeneration(true /* audio */)) {
431                break;
432            }
433
434            mDrainAudioQueuePending = false;
435
436            if (onDrainAudioQueue()) {
437                uint32_t numFramesPlayed;
438                CHECK_EQ(mAudioSink->getPosition(&numFramesPlayed),
439                         (status_t)OK);
440
441                uint32_t numFramesPendingPlayout =
442                    mNumFramesWritten - numFramesPlayed;
443
444                // This is how long the audio sink will have data to
445                // play back.
446                int64_t delayUs =
447                    mAudioSink->msecsPerFrame()
448                        * numFramesPendingPlayout * 1000ll;
449                if (mPlaybackRate > 1.0f) {
450                    delayUs /= mPlaybackRate;
451                }
452
453                // Let's give it more data after about half that time
454                // has elapsed.
455                Mutex::Autolock autoLock(mLock);
456                postDrainAudioQueue_l(delayUs / 2);
457            }
458            break;
459        }
460
461        case kWhatDrainVideoQueue:
462        {
463            int32_t generation;
464            CHECK(msg->findInt32("drainGeneration", &generation));
465            if (generation != getDrainGeneration(false /* audio */)) {
466                break;
467            }
468
469            mDrainVideoQueuePending = false;
470
471            onDrainVideoQueue();
472
473            postDrainVideoQueue();
474            break;
475        }
476
477        case kWhatPostDrainVideoQueue:
478        {
479            int32_t generation;
480            CHECK(msg->findInt32("drainGeneration", &generation));
481            if (generation != getDrainGeneration(false /* audio */)) {
482                break;
483            }
484
485            mDrainVideoQueuePending = false;
486            postDrainVideoQueue();
487            break;
488        }
489
490        case kWhatQueueBuffer:
491        {
492            onQueueBuffer(msg);
493            break;
494        }
495
496        case kWhatQueueEOS:
497        {
498            onQueueEOS(msg);
499            break;
500        }
501
502        case kWhatConfigPlayback:
503        {
504            sp<AReplyToken> replyID;
505            CHECK(msg->senderAwaitsResponse(&replyID));
506            AudioPlaybackRate rate;
507            readFromAMessage(msg, &rate);
508            status_t err = onConfigPlayback(rate);
509            sp<AMessage> response = new AMessage;
510            response->setInt32("err", err);
511            response->postReply(replyID);
512            break;
513        }
514
515        case kWhatGetPlaybackSettings:
516        {
517            sp<AReplyToken> replyID;
518            CHECK(msg->senderAwaitsResponse(&replyID));
519            AudioPlaybackRate rate = AUDIO_PLAYBACK_RATE_DEFAULT;
520            status_t err = onGetPlaybackSettings(&rate);
521            sp<AMessage> response = new AMessage;
522            if (err == OK) {
523                writeToAMessage(response, rate);
524            }
525            response->setInt32("err", err);
526            response->postReply(replyID);
527            break;
528        }
529
530        case kWhatConfigSync:
531        {
532            sp<AReplyToken> replyID;
533            CHECK(msg->senderAwaitsResponse(&replyID));
534            AVSyncSettings sync;
535            float videoFpsHint;
536            readFromAMessage(msg, &sync, &videoFpsHint);
537            status_t err = onConfigSync(sync, videoFpsHint);
538            sp<AMessage> response = new AMessage;
539            response->setInt32("err", err);
540            response->postReply(replyID);
541            break;
542        }
543
544        case kWhatGetSyncSettings:
545        {
546            sp<AReplyToken> replyID;
547            CHECK(msg->senderAwaitsResponse(&replyID));
548
549            ALOGV("kWhatGetSyncSettings");
550            AVSyncSettings sync;
551            float videoFps = -1.f;
552            status_t err = onGetSyncSettings(&sync, &videoFps);
553            sp<AMessage> response = new AMessage;
554            if (err == OK) {
555                writeToAMessage(response, sync, videoFps);
556            }
557            response->setInt32("err", err);
558            response->postReply(replyID);
559            break;
560        }
561
562        case kWhatFlush:
563        {
564            onFlush(msg);
565            break;
566        }
567
568        case kWhatDisableOffloadAudio:
569        {
570            onDisableOffloadAudio();
571            break;
572        }
573
574        case kWhatEnableOffloadAudio:
575        {
576            onEnableOffloadAudio();
577            break;
578        }
579
580        case kWhatPause:
581        {
582            onPause();
583            break;
584        }
585
586        case kWhatResume:
587        {
588            onResume();
589            break;
590        }
591
592        case kWhatSetVideoFrameRate:
593        {
594            float fps;
595            CHECK(msg->findFloat("frame-rate", &fps));
596            onSetVideoFrameRate(fps);
597            break;
598        }
599
600        case kWhatAudioTearDown:
601        {
602            onAudioTearDown(kDueToError);
603            break;
604        }
605
606        case kWhatAudioOffloadPauseTimeout:
607        {
608            int32_t generation;
609            CHECK(msg->findInt32("drainGeneration", &generation));
610            if (generation != mAudioOffloadPauseTimeoutGeneration) {
611                break;
612            }
613            ALOGV("Audio Offload tear down due to pause timeout.");
614            onAudioTearDown(kDueToTimeout);
615            mWakeLock->release();
616            break;
617        }
618
619        default:
620            TRESPASS();
621            break;
622    }
623}
624
625void NuPlayer::Renderer::postDrainAudioQueue_l(int64_t delayUs) {
626    if (mDrainAudioQueuePending || mSyncQueues || mPaused
627            || mUseAudioCallback) {
628        return;
629    }
630
631    if (mAudioQueue.empty()) {
632        return;
633    }
634
635    mDrainAudioQueuePending = true;
636    sp<AMessage> msg = new AMessage(kWhatDrainAudioQueue, this);
637    msg->setInt32("drainGeneration", mAudioDrainGeneration);
638    msg->post(delayUs);
639}
640
641void NuPlayer::Renderer::prepareForMediaRenderingStart_l() {
642    mAudioRenderingStartGeneration = mAudioDrainGeneration;
643    mVideoRenderingStartGeneration = mVideoDrainGeneration;
644}
645
646void NuPlayer::Renderer::notifyIfMediaRenderingStarted_l() {
647    if (mVideoRenderingStartGeneration == mVideoDrainGeneration &&
648        mAudioRenderingStartGeneration == mAudioDrainGeneration) {
649        mVideoRenderingStartGeneration = -1;
650        mAudioRenderingStartGeneration = -1;
651
652        sp<AMessage> notify = mNotify->dup();
653        notify->setInt32("what", kWhatMediaRenderingStart);
654        notify->post();
655    }
656}
657
658// static
659size_t NuPlayer::Renderer::AudioSinkCallback(
660        MediaPlayerBase::AudioSink * /* audioSink */,
661        void *buffer,
662        size_t size,
663        void *cookie,
664        MediaPlayerBase::AudioSink::cb_event_t event) {
665    NuPlayer::Renderer *me = (NuPlayer::Renderer *)cookie;
666
667    switch (event) {
668        case MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER:
669        {
670            return me->fillAudioBuffer(buffer, size);
671            break;
672        }
673
674        case MediaPlayerBase::AudioSink::CB_EVENT_STREAM_END:
675        {
676            ALOGV("AudioSink::CB_EVENT_STREAM_END");
677            me->notifyEOS(true /* audio */, ERROR_END_OF_STREAM);
678            break;
679        }
680
681        case MediaPlayerBase::AudioSink::CB_EVENT_TEAR_DOWN:
682        {
683            ALOGV("AudioSink::CB_EVENT_TEAR_DOWN");
684            me->notifyAudioTearDown();
685            break;
686        }
687    }
688
689    return 0;
690}
691
692size_t NuPlayer::Renderer::fillAudioBuffer(void *buffer, size_t size) {
693    Mutex::Autolock autoLock(mLock);
694
695    if (!mUseAudioCallback || mPaused) {
696        return 0;
697    }
698
699    bool hasEOS = false;
700
701    size_t sizeCopied = 0;
702    bool firstEntry = true;
703    QueueEntry *entry;  // will be valid after while loop if hasEOS is set.
704    while (sizeCopied < size && !mAudioQueue.empty()) {
705        entry = &*mAudioQueue.begin();
706
707        if (entry->mBuffer == NULL) { // EOS
708            hasEOS = true;
709            mAudioQueue.erase(mAudioQueue.begin());
710            break;
711        }
712
713        if (firstEntry && entry->mOffset == 0) {
714            firstEntry = false;
715            int64_t mediaTimeUs;
716            CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
717            ALOGV("fillAudioBuffer: rendering audio at media time %.2f secs", mediaTimeUs / 1E6);
718            setAudioFirstAnchorTimeIfNeeded_l(mediaTimeUs);
719        }
720
721        size_t copy = entry->mBuffer->size() - entry->mOffset;
722        size_t sizeRemaining = size - sizeCopied;
723        if (copy > sizeRemaining) {
724            copy = sizeRemaining;
725        }
726
727        memcpy((char *)buffer + sizeCopied,
728               entry->mBuffer->data() + entry->mOffset,
729               copy);
730
731        entry->mOffset += copy;
732        if (entry->mOffset == entry->mBuffer->size()) {
733            entry->mNotifyConsumed->post();
734            mAudioQueue.erase(mAudioQueue.begin());
735            entry = NULL;
736        }
737        sizeCopied += copy;
738
739        notifyIfMediaRenderingStarted_l();
740    }
741
742    if (mAudioFirstAnchorTimeMediaUs >= 0) {
743        int64_t nowUs = ALooper::GetNowUs();
744        int64_t nowMediaUs =
745            mAudioFirstAnchorTimeMediaUs + getPlayedOutAudioDurationUs(nowUs);
746        // we don't know how much data we are queueing for offloaded tracks.
747        mMediaClock->updateAnchor(nowMediaUs, nowUs, INT64_MAX);
748    }
749
750    // for non-offloaded audio, we need to compute the frames written because
751    // there is no EVENT_STREAM_END notification. The frames written gives
752    // an estimate on the pending played out duration.
753    if (!offloadingAudio()) {
754        mNumFramesWritten += sizeCopied / mAudioSink->frameSize();
755    }
756
757    if (hasEOS) {
758        (new AMessage(kWhatStopAudioSink, this))->post();
759        // As there is currently no EVENT_STREAM_END callback notification for
760        // non-offloaded audio tracks, we need to post the EOS ourselves.
761        if (!offloadingAudio()) {
762            int64_t postEOSDelayUs = 0;
763            if (mAudioSink->needsTrailingPadding()) {
764                postEOSDelayUs = getPendingAudioPlayoutDurationUs(ALooper::GetNowUs());
765            }
766            ALOGV("fillAudioBuffer: notifyEOS "
767                    "mNumFramesWritten:%u  finalResult:%d  postEOSDelay:%lld",
768                    mNumFramesWritten, entry->mFinalResult, (long long)postEOSDelayUs);
769            notifyEOS(true /* audio */, entry->mFinalResult, postEOSDelayUs);
770        }
771    }
772    return sizeCopied;
773}
774
775bool NuPlayer::Renderer::onDrainAudioQueue() {
776    // TODO: This call to getPosition checks if AudioTrack has been created
777    // in AudioSink before draining audio. If AudioTrack doesn't exist, then
778    // CHECKs on getPosition will fail.
779    // We still need to figure out why AudioTrack is not created when
780    // this function is called. One possible reason could be leftover
781    // audio. Another possible place is to check whether decoder
782    // has received INFO_FORMAT_CHANGED as the first buffer since
783    // AudioSink is opened there, and possible interactions with flush
784    // immediately after start. Investigate error message
785    // "vorbis_dsp_synthesis returned -135", along with RTSP.
786    uint32_t numFramesPlayed;
787    if (mAudioSink->getPosition(&numFramesPlayed) != OK) {
788        return false;
789    }
790
791#if 0
792    ssize_t numFramesAvailableToWrite =
793        mAudioSink->frameCount() - (mNumFramesWritten - numFramesPlayed);
794
795    if (numFramesAvailableToWrite == mAudioSink->frameCount()) {
796        ALOGI("audio sink underrun");
797    } else {
798        ALOGV("audio queue has %d frames left to play",
799             mAudioSink->frameCount() - numFramesAvailableToWrite);
800    }
801#endif
802
803    while (!mAudioQueue.empty()) {
804        QueueEntry *entry = &*mAudioQueue.begin();
805
806        mLastAudioBufferDrained = entry->mBufferOrdinal;
807
808        if (entry->mBuffer == NULL) {
809            // EOS
810            int64_t postEOSDelayUs = 0;
811            if (mAudioSink->needsTrailingPadding()) {
812                postEOSDelayUs = getPendingAudioPlayoutDurationUs(ALooper::GetNowUs());
813            }
814            notifyEOS(true /* audio */, entry->mFinalResult, postEOSDelayUs);
815
816            mAudioQueue.erase(mAudioQueue.begin());
817            entry = NULL;
818            if (mAudioSink->needsTrailingPadding()) {
819                // If we're not in gapless playback (i.e. through setNextPlayer), we
820                // need to stop the track here, because that will play out the last
821                // little bit at the end of the file. Otherwise short files won't play.
822                mAudioSink->stop();
823                mNumFramesWritten = 0;
824            }
825            return false;
826        }
827
828        // ignore 0-sized buffer which could be EOS marker with no data
829        if (entry->mOffset == 0 && entry->mBuffer->size() > 0) {
830            int64_t mediaTimeUs;
831            CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
832            ALOGV("onDrainAudioQueue: rendering audio at media time %.2f secs",
833                    mediaTimeUs / 1E6);
834            onNewAudioMediaTime(mediaTimeUs);
835        }
836
837        size_t copy = entry->mBuffer->size() - entry->mOffset;
838
839        ssize_t written = mAudioSink->write(entry->mBuffer->data() + entry->mOffset,
840                                            copy, false /* blocking */);
841        if (written < 0) {
842            // An error in AudioSink write. Perhaps the AudioSink was not properly opened.
843            if (written == WOULD_BLOCK) {
844                ALOGW("AudioSink write would block when writing %zu bytes", copy);
845            } else {
846                ALOGE("AudioSink write error(%zd) when writing %zu bytes", written, copy);
847                notifyAudioTearDown();
848            }
849            break;
850        }
851
852        entry->mOffset += written;
853        if (entry->mOffset == entry->mBuffer->size()) {
854            entry->mNotifyConsumed->post();
855            mAudioQueue.erase(mAudioQueue.begin());
856
857            entry = NULL;
858        }
859
860        size_t copiedFrames = written / mAudioSink->frameSize();
861        mNumFramesWritten += copiedFrames;
862
863        {
864            Mutex::Autolock autoLock(mLock);
865            notifyIfMediaRenderingStarted_l();
866        }
867
868        if (written != (ssize_t)copy) {
869            // A short count was received from AudioSink::write()
870            //
871            // AudioSink write is called in non-blocking mode.
872            // It may return with a short count when:
873            //
874            // 1) Size to be copied is not a multiple of the frame size. We consider this fatal.
875            // 2) The data to be copied exceeds the available buffer in AudioSink.
876            // 3) An error occurs and data has been partially copied to the buffer in AudioSink.
877            // 4) AudioSink is an AudioCache for data retrieval, and the AudioCache is exceeded.
878
879            // (Case 1)
880            // Must be a multiple of the frame size.  If it is not a multiple of a frame size, it
881            // needs to fail, as we should not carry over fractional frames between calls.
882            CHECK_EQ(copy % mAudioSink->frameSize(), 0);
883
884            // (Case 2, 3, 4)
885            // Return early to the caller.
886            // Beware of calling immediately again as this may busy-loop if you are not careful.
887            ALOGV("AudioSink write short frame count %zd < %zu", written, copy);
888            break;
889        }
890    }
891    int64_t maxTimeMedia;
892    {
893        Mutex::Autolock autoLock(mLock);
894        maxTimeMedia =
895            mAnchorTimeMediaUs +
896                    (int64_t)(max((long long)mNumFramesWritten - mAnchorNumFramesWritten, 0LL)
897                            * 1000LL * mAudioSink->msecsPerFrame());
898    }
899    mMediaClock->updateMaxTimeMedia(maxTimeMedia);
900
901    return !mAudioQueue.empty();
902}
903
904int64_t NuPlayer::Renderer::getDurationUsIfPlayedAtSampleRate(uint32_t numFrames) {
905    int32_t sampleRate = offloadingAudio() ?
906            mCurrentOffloadInfo.sample_rate : mCurrentPcmInfo.mSampleRate;
907    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
908    return (int64_t)((int32_t)numFrames * 1000000LL / sampleRate);
909}
910
911// Calculate duration of pending samples if played at normal rate (i.e., 1.0).
912int64_t NuPlayer::Renderer::getPendingAudioPlayoutDurationUs(int64_t nowUs) {
913    int64_t writtenAudioDurationUs = getDurationUsIfPlayedAtSampleRate(mNumFramesWritten);
914    return writtenAudioDurationUs - getPlayedOutAudioDurationUs(nowUs);
915}
916
917int64_t NuPlayer::Renderer::getRealTimeUs(int64_t mediaTimeUs, int64_t nowUs) {
918    int64_t realUs;
919    if (mMediaClock->getRealTimeFor(mediaTimeUs, &realUs) != OK) {
920        // If failed to get current position, e.g. due to audio clock is
921        // not ready, then just play out video immediately without delay.
922        return nowUs;
923    }
924    return realUs;
925}
926
927void NuPlayer::Renderer::onNewAudioMediaTime(int64_t mediaTimeUs) {
928    Mutex::Autolock autoLock(mLock);
929    // TRICKY: vorbis decoder generates multiple frames with the same
930    // timestamp, so only update on the first frame with a given timestamp
931    if (mediaTimeUs == mAnchorTimeMediaUs) {
932        return;
933    }
934    setAudioFirstAnchorTimeIfNeeded_l(mediaTimeUs);
935    int64_t nowUs = ALooper::GetNowUs();
936    int64_t nowMediaUs = mediaTimeUs - getPendingAudioPlayoutDurationUs(nowUs);
937    mMediaClock->updateAnchor(nowMediaUs, nowUs, mediaTimeUs);
938    mAnchorNumFramesWritten = mNumFramesWritten;
939    mAnchorTimeMediaUs = mediaTimeUs;
940}
941
942// Called without mLock acquired.
943void NuPlayer::Renderer::postDrainVideoQueue() {
944    if (mDrainVideoQueuePending
945            || getSyncQueues()
946            || (mPaused && mVideoSampleReceived)) {
947        return;
948    }
949
950    if (mVideoQueue.empty()) {
951        return;
952    }
953
954    QueueEntry &entry = *mVideoQueue.begin();
955
956    sp<AMessage> msg = new AMessage(kWhatDrainVideoQueue, this);
957    msg->setInt32("drainGeneration", getDrainGeneration(false /* audio */));
958
959    if (entry.mBuffer == NULL) {
960        // EOS doesn't carry a timestamp.
961        msg->post();
962        mDrainVideoQueuePending = true;
963        return;
964    }
965
966    int64_t delayUs;
967    int64_t nowUs = ALooper::GetNowUs();
968    int64_t realTimeUs;
969    if (mFlags & FLAG_REAL_TIME) {
970        int64_t mediaTimeUs;
971        CHECK(entry.mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
972        realTimeUs = mediaTimeUs;
973    } else {
974        int64_t mediaTimeUs;
975        CHECK(entry.mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
976
977        {
978            Mutex::Autolock autoLock(mLock);
979            if (mAnchorTimeMediaUs < 0) {
980                mMediaClock->updateAnchor(mediaTimeUs, nowUs, mediaTimeUs);
981                mAnchorTimeMediaUs = mediaTimeUs;
982                realTimeUs = nowUs;
983            } else {
984                realTimeUs = getRealTimeUs(mediaTimeUs, nowUs);
985            }
986        }
987        if (!mHasAudio) {
988            // smooth out videos >= 10fps
989            mMediaClock->updateMaxTimeMedia(mediaTimeUs + 100000);
990        }
991
992        // Heuristics to handle situation when media time changed without a
993        // discontinuity. If we have not drained an audio buffer that was
994        // received after this buffer, repost in 10 msec. Otherwise repost
995        // in 500 msec.
996        delayUs = realTimeUs - nowUs;
997        if (delayUs > 500000) {
998            int64_t postDelayUs = 500000;
999            if (mHasAudio && (mLastAudioBufferDrained - entry.mBufferOrdinal) <= 0) {
1000                postDelayUs = 10000;
1001            }
1002            msg->setWhat(kWhatPostDrainVideoQueue);
1003            msg->post(postDelayUs);
1004            mVideoScheduler->restart();
1005            ALOGI("possible video time jump of %dms, retrying in %dms",
1006                    (int)(delayUs / 1000), (int)(postDelayUs / 1000));
1007            mDrainVideoQueuePending = true;
1008            return;
1009        }
1010    }
1011
1012    realTimeUs = mVideoScheduler->schedule(realTimeUs * 1000) / 1000;
1013    int64_t twoVsyncsUs = 2 * (mVideoScheduler->getVsyncPeriod() / 1000);
1014
1015    delayUs = realTimeUs - nowUs;
1016
1017    ALOGW_IF(delayUs > 500000, "unusually high delayUs: %" PRId64, delayUs);
1018    // post 2 display refreshes before rendering is due
1019    msg->post(delayUs > twoVsyncsUs ? delayUs - twoVsyncsUs : 0);
1020
1021    mDrainVideoQueuePending = true;
1022}
1023
1024void NuPlayer::Renderer::onDrainVideoQueue() {
1025    if (mVideoQueue.empty()) {
1026        return;
1027    }
1028
1029    QueueEntry *entry = &*mVideoQueue.begin();
1030
1031    if (entry->mBuffer == NULL) {
1032        // EOS
1033
1034        notifyEOS(false /* audio */, entry->mFinalResult);
1035
1036        mVideoQueue.erase(mVideoQueue.begin());
1037        entry = NULL;
1038
1039        setVideoLateByUs(0);
1040        return;
1041    }
1042
1043    int64_t nowUs = -1;
1044    int64_t realTimeUs;
1045    if (mFlags & FLAG_REAL_TIME) {
1046        CHECK(entry->mBuffer->meta()->findInt64("timeUs", &realTimeUs));
1047    } else {
1048        int64_t mediaTimeUs;
1049        CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
1050
1051        nowUs = ALooper::GetNowUs();
1052        realTimeUs = getRealTimeUs(mediaTimeUs, nowUs);
1053    }
1054
1055    bool tooLate = false;
1056
1057    if (!mPaused) {
1058        if (nowUs == -1) {
1059            nowUs = ALooper::GetNowUs();
1060        }
1061        setVideoLateByUs(nowUs - realTimeUs);
1062        tooLate = (mVideoLateByUs > 40000);
1063
1064        if (tooLate) {
1065            ALOGV("video late by %lld us (%.2f secs)",
1066                 (long long)mVideoLateByUs, mVideoLateByUs / 1E6);
1067        } else {
1068            int64_t mediaUs = 0;
1069            mMediaClock->getMediaTime(realTimeUs, &mediaUs);
1070            ALOGV("rendering video at media time %.2f secs",
1071                    (mFlags & FLAG_REAL_TIME ? realTimeUs :
1072                    mediaUs) / 1E6);
1073        }
1074    } else {
1075        setVideoLateByUs(0);
1076        if (!mVideoSampleReceived && !mHasAudio) {
1077            // This will ensure that the first frame after a flush won't be used as anchor
1078            // when renderer is in paused state, because resume can happen any time after seek.
1079            Mutex::Autolock autoLock(mLock);
1080            clearAnchorTime_l();
1081        }
1082    }
1083
1084    entry->mNotifyConsumed->setInt64("timestampNs", realTimeUs * 1000ll);
1085    entry->mNotifyConsumed->setInt32("render", !tooLate);
1086    entry->mNotifyConsumed->post();
1087    mVideoQueue.erase(mVideoQueue.begin());
1088    entry = NULL;
1089
1090    mVideoSampleReceived = true;
1091
1092    if (!mPaused) {
1093        if (!mVideoRenderingStarted) {
1094            mVideoRenderingStarted = true;
1095            notifyVideoRenderingStart();
1096        }
1097        Mutex::Autolock autoLock(mLock);
1098        notifyIfMediaRenderingStarted_l();
1099    }
1100}
1101
1102void NuPlayer::Renderer::notifyVideoRenderingStart() {
1103    sp<AMessage> notify = mNotify->dup();
1104    notify->setInt32("what", kWhatVideoRenderingStart);
1105    notify->post();
1106}
1107
1108void NuPlayer::Renderer::notifyEOS(bool audio, status_t finalResult, int64_t delayUs) {
1109    sp<AMessage> notify = mNotify->dup();
1110    notify->setInt32("what", kWhatEOS);
1111    notify->setInt32("audio", static_cast<int32_t>(audio));
1112    notify->setInt32("finalResult", finalResult);
1113    notify->post(delayUs);
1114}
1115
1116void NuPlayer::Renderer::notifyAudioTearDown() {
1117    (new AMessage(kWhatAudioTearDown, this))->post();
1118}
1119
1120void NuPlayer::Renderer::onQueueBuffer(const sp<AMessage> &msg) {
1121    int32_t audio;
1122    CHECK(msg->findInt32("audio", &audio));
1123
1124    if (dropBufferIfStale(audio, msg)) {
1125        return;
1126    }
1127
1128    if (audio) {
1129        mHasAudio = true;
1130    } else {
1131        mHasVideo = true;
1132    }
1133
1134    if (mHasVideo) {
1135        if (mVideoScheduler == NULL) {
1136            mVideoScheduler = new VideoFrameScheduler();
1137            mVideoScheduler->init();
1138        }
1139    }
1140
1141    sp<ABuffer> buffer;
1142    CHECK(msg->findBuffer("buffer", &buffer));
1143
1144    sp<AMessage> notifyConsumed;
1145    CHECK(msg->findMessage("notifyConsumed", &notifyConsumed));
1146
1147    QueueEntry entry;
1148    entry.mBuffer = buffer;
1149    entry.mNotifyConsumed = notifyConsumed;
1150    entry.mOffset = 0;
1151    entry.mFinalResult = OK;
1152    entry.mBufferOrdinal = ++mTotalBuffersQueued;
1153
1154    if (audio) {
1155        Mutex::Autolock autoLock(mLock);
1156        mAudioQueue.push_back(entry);
1157        postDrainAudioQueue_l();
1158    } else {
1159        mVideoQueue.push_back(entry);
1160        postDrainVideoQueue();
1161    }
1162
1163    Mutex::Autolock autoLock(mLock);
1164    if (!mSyncQueues || mAudioQueue.empty() || mVideoQueue.empty()) {
1165        return;
1166    }
1167
1168    sp<ABuffer> firstAudioBuffer = (*mAudioQueue.begin()).mBuffer;
1169    sp<ABuffer> firstVideoBuffer = (*mVideoQueue.begin()).mBuffer;
1170
1171    if (firstAudioBuffer == NULL || firstVideoBuffer == NULL) {
1172        // EOS signalled on either queue.
1173        syncQueuesDone_l();
1174        return;
1175    }
1176
1177    int64_t firstAudioTimeUs;
1178    int64_t firstVideoTimeUs;
1179    CHECK(firstAudioBuffer->meta()
1180            ->findInt64("timeUs", &firstAudioTimeUs));
1181    CHECK(firstVideoBuffer->meta()
1182            ->findInt64("timeUs", &firstVideoTimeUs));
1183
1184    int64_t diff = firstVideoTimeUs - firstAudioTimeUs;
1185
1186    ALOGV("queueDiff = %.2f secs", diff / 1E6);
1187
1188    if (diff > 100000ll) {
1189        // Audio data starts More than 0.1 secs before video.
1190        // Drop some audio.
1191
1192        (*mAudioQueue.begin()).mNotifyConsumed->post();
1193        mAudioQueue.erase(mAudioQueue.begin());
1194        return;
1195    }
1196
1197    syncQueuesDone_l();
1198}
1199
1200void NuPlayer::Renderer::syncQueuesDone_l() {
1201    if (!mSyncQueues) {
1202        return;
1203    }
1204
1205    mSyncQueues = false;
1206
1207    if (!mAudioQueue.empty()) {
1208        postDrainAudioQueue_l();
1209    }
1210
1211    if (!mVideoQueue.empty()) {
1212        mLock.unlock();
1213        postDrainVideoQueue();
1214        mLock.lock();
1215    }
1216}
1217
1218void NuPlayer::Renderer::onQueueEOS(const sp<AMessage> &msg) {
1219    int32_t audio;
1220    CHECK(msg->findInt32("audio", &audio));
1221
1222    if (dropBufferIfStale(audio, msg)) {
1223        return;
1224    }
1225
1226    int32_t finalResult;
1227    CHECK(msg->findInt32("finalResult", &finalResult));
1228
1229    QueueEntry entry;
1230    entry.mOffset = 0;
1231    entry.mFinalResult = finalResult;
1232
1233    if (audio) {
1234        Mutex::Autolock autoLock(mLock);
1235        if (mAudioQueue.empty() && mSyncQueues) {
1236            syncQueuesDone_l();
1237        }
1238        mAudioQueue.push_back(entry);
1239        postDrainAudioQueue_l();
1240    } else {
1241        if (mVideoQueue.empty() && getSyncQueues()) {
1242            Mutex::Autolock autoLock(mLock);
1243            syncQueuesDone_l();
1244        }
1245        mVideoQueue.push_back(entry);
1246        postDrainVideoQueue();
1247    }
1248}
1249
1250void NuPlayer::Renderer::onFlush(const sp<AMessage> &msg) {
1251    int32_t audio, notifyComplete;
1252    CHECK(msg->findInt32("audio", &audio));
1253
1254    {
1255        Mutex::Autolock autoLock(mLock);
1256        if (audio) {
1257            notifyComplete = mNotifyCompleteAudio;
1258            mNotifyCompleteAudio = false;
1259        } else {
1260            notifyComplete = mNotifyCompleteVideo;
1261            mNotifyCompleteVideo = false;
1262        }
1263
1264        // If we're currently syncing the queues, i.e. dropping audio while
1265        // aligning the first audio/video buffer times and only one of the
1266        // two queues has data, we may starve that queue by not requesting
1267        // more buffers from the decoder. If the other source then encounters
1268        // a discontinuity that leads to flushing, we'll never find the
1269        // corresponding discontinuity on the other queue.
1270        // Therefore we'll stop syncing the queues if at least one of them
1271        // is flushed.
1272        syncQueuesDone_l();
1273        clearAnchorTime_l();
1274    }
1275
1276    ALOGV("flushing %s", audio ? "audio" : "video");
1277    if (audio) {
1278        {
1279            Mutex::Autolock autoLock(mLock);
1280            flushQueue(&mAudioQueue);
1281
1282            ++mAudioDrainGeneration;
1283            prepareForMediaRenderingStart_l();
1284
1285            // the frame count will be reset after flush.
1286            clearAudioFirstAnchorTime_l();
1287        }
1288
1289        mDrainAudioQueuePending = false;
1290
1291        if (offloadingAudio()) {
1292            mAudioSink->pause();
1293            mAudioSink->flush();
1294            mAudioSink->start();
1295        } else {
1296            mAudioSink->pause();
1297            mAudioSink->flush();
1298            // Call stop() to signal to the AudioSink to completely fill the
1299            // internal buffer before resuming playback.
1300            mAudioSink->stop();
1301            if (!mPaused) {
1302                mAudioSink->start();
1303            }
1304            mNumFramesWritten = 0;
1305        }
1306    } else {
1307        flushQueue(&mVideoQueue);
1308
1309        mDrainVideoQueuePending = false;
1310
1311        if (mVideoScheduler != NULL) {
1312            mVideoScheduler->restart();
1313        }
1314
1315        Mutex::Autolock autoLock(mLock);
1316        ++mVideoDrainGeneration;
1317        prepareForMediaRenderingStart_l();
1318    }
1319
1320    mVideoSampleReceived = false;
1321
1322    if (notifyComplete) {
1323        notifyFlushComplete(audio);
1324    }
1325}
1326
1327void NuPlayer::Renderer::flushQueue(List<QueueEntry> *queue) {
1328    while (!queue->empty()) {
1329        QueueEntry *entry = &*queue->begin();
1330
1331        if (entry->mBuffer != NULL) {
1332            entry->mNotifyConsumed->post();
1333        }
1334
1335        queue->erase(queue->begin());
1336        entry = NULL;
1337    }
1338}
1339
1340void NuPlayer::Renderer::notifyFlushComplete(bool audio) {
1341    sp<AMessage> notify = mNotify->dup();
1342    notify->setInt32("what", kWhatFlushComplete);
1343    notify->setInt32("audio", static_cast<int32_t>(audio));
1344    notify->post();
1345}
1346
1347bool NuPlayer::Renderer::dropBufferIfStale(
1348        bool audio, const sp<AMessage> &msg) {
1349    int32_t queueGeneration;
1350    CHECK(msg->findInt32("queueGeneration", &queueGeneration));
1351
1352    if (queueGeneration == getQueueGeneration(audio)) {
1353        return false;
1354    }
1355
1356    sp<AMessage> notifyConsumed;
1357    if (msg->findMessage("notifyConsumed", &notifyConsumed)) {
1358        notifyConsumed->post();
1359    }
1360
1361    return true;
1362}
1363
1364void NuPlayer::Renderer::onAudioSinkChanged() {
1365    if (offloadingAudio()) {
1366        return;
1367    }
1368    CHECK(!mDrainAudioQueuePending);
1369    mNumFramesWritten = 0;
1370    {
1371        Mutex::Autolock autoLock(mLock);
1372        mAnchorNumFramesWritten = -1;
1373    }
1374    uint32_t written;
1375    if (mAudioSink->getFramesWritten(&written) == OK) {
1376        mNumFramesWritten = written;
1377    }
1378}
1379
1380void NuPlayer::Renderer::onDisableOffloadAudio() {
1381    Mutex::Autolock autoLock(mLock);
1382    mFlags &= ~FLAG_OFFLOAD_AUDIO;
1383    ++mAudioDrainGeneration;
1384}
1385
1386void NuPlayer::Renderer::onEnableOffloadAudio() {
1387    Mutex::Autolock autoLock(mLock);
1388    mFlags |= FLAG_OFFLOAD_AUDIO;
1389    ++mAudioDrainGeneration;
1390}
1391
1392void NuPlayer::Renderer::onPause() {
1393    if (mPaused) {
1394        return;
1395    }
1396
1397    {
1398        Mutex::Autolock autoLock(mLock);
1399        ++mAudioDrainGeneration;
1400        ++mVideoDrainGeneration;
1401        prepareForMediaRenderingStart_l();
1402        mPaused = true;
1403        mMediaClock->setPlaybackRate(0.0);
1404    }
1405
1406    mDrainAudioQueuePending = false;
1407    mDrainVideoQueuePending = false;
1408
1409    if (mHasAudio) {
1410        mAudioSink->pause();
1411        startAudioOffloadPauseTimeout();
1412    }
1413
1414    ALOGV("now paused audio queue has %zu entries, video has %zu entries",
1415          mAudioQueue.size(), mVideoQueue.size());
1416}
1417
1418void NuPlayer::Renderer::onResume() {
1419    if (!mPaused) {
1420        return;
1421    }
1422
1423    if (mHasAudio) {
1424        cancelAudioOffloadPauseTimeout();
1425        mAudioSink->start();
1426    }
1427
1428    {
1429        Mutex::Autolock autoLock(mLock);
1430        mPaused = false;
1431
1432        // configure audiosink as we did not do it when pausing
1433        if (mAudioSink != NULL && mAudioSink->ready()) {
1434            mAudioSink->setPlaybackRate(mPlaybackSettings);
1435        }
1436
1437        mMediaClock->setPlaybackRate(mPlaybackRate);
1438
1439        if (!mAudioQueue.empty()) {
1440            postDrainAudioQueue_l();
1441        }
1442    }
1443
1444    if (!mVideoQueue.empty()) {
1445        postDrainVideoQueue();
1446    }
1447}
1448
1449void NuPlayer::Renderer::onSetVideoFrameRate(float fps) {
1450    if (mVideoScheduler == NULL) {
1451        mVideoScheduler = new VideoFrameScheduler();
1452    }
1453    mVideoScheduler->init(fps);
1454}
1455
1456int32_t NuPlayer::Renderer::getQueueGeneration(bool audio) {
1457    Mutex::Autolock autoLock(mLock);
1458    return (audio ? mAudioQueueGeneration : mVideoQueueGeneration);
1459}
1460
1461int32_t NuPlayer::Renderer::getDrainGeneration(bool audio) {
1462    Mutex::Autolock autoLock(mLock);
1463    return (audio ? mAudioDrainGeneration : mVideoDrainGeneration);
1464}
1465
1466bool NuPlayer::Renderer::getSyncQueues() {
1467    Mutex::Autolock autoLock(mLock);
1468    return mSyncQueues;
1469}
1470
1471// TODO: Remove unnecessary calls to getPlayedOutAudioDurationUs()
1472// as it acquires locks and may query the audio driver.
1473//
1474// Some calls could conceivably retrieve extrapolated data instead of
1475// accessing getTimestamp() or getPosition() every time a data buffer with
1476// a media time is received.
1477//
1478// Calculate duration of played samples if played at normal rate (i.e., 1.0).
1479int64_t NuPlayer::Renderer::getPlayedOutAudioDurationUs(int64_t nowUs) {
1480    uint32_t numFramesPlayed;
1481    int64_t numFramesPlayedAt;
1482    AudioTimestamp ts;
1483    static const int64_t kStaleTimestamp100ms = 100000;
1484
1485    status_t res = mAudioSink->getTimestamp(ts);
1486    if (res == OK) {                 // case 1: mixing audio tracks and offloaded tracks.
1487        numFramesPlayed = ts.mPosition;
1488        numFramesPlayedAt =
1489            ts.mTime.tv_sec * 1000000LL + ts.mTime.tv_nsec / 1000;
1490        const int64_t timestampAge = nowUs - numFramesPlayedAt;
1491        if (timestampAge > kStaleTimestamp100ms) {
1492            // This is an audio FIXME.
1493            // getTimestamp returns a timestamp which may come from audio mixing threads.
1494            // After pausing, the MixerThread may go idle, thus the mTime estimate may
1495            // become stale. Assuming that the MixerThread runs 20ms, with FastMixer at 5ms,
1496            // the max latency should be about 25ms with an average around 12ms (to be verified).
1497            // For safety we use 100ms.
1498            ALOGV("getTimestamp: returned stale timestamp nowUs(%lld) numFramesPlayedAt(%lld)",
1499                    (long long)nowUs, (long long)numFramesPlayedAt);
1500            numFramesPlayedAt = nowUs - kStaleTimestamp100ms;
1501        }
1502        //ALOGD("getTimestamp: OK %d %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1503    } else if (res == WOULD_BLOCK) { // case 2: transitory state on start of a new track
1504        numFramesPlayed = 0;
1505        numFramesPlayedAt = nowUs;
1506        //ALOGD("getTimestamp: WOULD_BLOCK %d %lld",
1507        //        numFramesPlayed, (long long)numFramesPlayedAt);
1508    } else {                         // case 3: transitory at new track or audio fast tracks.
1509        res = mAudioSink->getPosition(&numFramesPlayed);
1510        CHECK_EQ(res, (status_t)OK);
1511        numFramesPlayedAt = nowUs;
1512        numFramesPlayedAt += 1000LL * mAudioSink->latency() / 2; /* XXX */
1513        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1514    }
1515
1516    //CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
1517    int64_t durationUs = getDurationUsIfPlayedAtSampleRate(numFramesPlayed)
1518            + nowUs - numFramesPlayedAt;
1519    if (durationUs < 0) {
1520        // Occurs when numFramesPlayed position is very small and the following:
1521        // (1) In case 1, the time nowUs is computed before getTimestamp() is called and
1522        //     numFramesPlayedAt is greater than nowUs by time more than numFramesPlayed.
1523        // (2) In case 3, using getPosition and adding mAudioSink->latency() to
1524        //     numFramesPlayedAt, by a time amount greater than numFramesPlayed.
1525        //
1526        // Both of these are transitory conditions.
1527        ALOGV("getPlayedOutAudioDurationUs: negative duration %lld set to zero", (long long)durationUs);
1528        durationUs = 0;
1529    }
1530    ALOGV("getPlayedOutAudioDurationUs(%lld) nowUs(%lld) frames(%u) framesAt(%lld)",
1531            (long long)durationUs, (long long)nowUs, numFramesPlayed, (long long)numFramesPlayedAt);
1532    return durationUs;
1533}
1534
1535void NuPlayer::Renderer::onAudioTearDown(AudioTearDownReason reason) {
1536    if (mAudioTornDown) {
1537        return;
1538    }
1539    mAudioTornDown = true;
1540
1541    int64_t currentPositionUs;
1542    if (getCurrentPosition(&currentPositionUs) != OK) {
1543        currentPositionUs = 0;
1544    }
1545
1546    mAudioSink->stop();
1547    mAudioSink->flush();
1548
1549    sp<AMessage> notify = mNotify->dup();
1550    notify->setInt32("what", kWhatAudioTearDown);
1551    notify->setInt64("positionUs", currentPositionUs);
1552    notify->setInt32("reason", reason);
1553    notify->post();
1554}
1555
1556void NuPlayer::Renderer::startAudioOffloadPauseTimeout() {
1557    if (offloadingAudio()) {
1558        mWakeLock->acquire();
1559        sp<AMessage> msg = new AMessage(kWhatAudioOffloadPauseTimeout, this);
1560        msg->setInt32("drainGeneration", mAudioOffloadPauseTimeoutGeneration);
1561        msg->post(kOffloadPauseMaxUs);
1562    }
1563}
1564
1565void NuPlayer::Renderer::cancelAudioOffloadPauseTimeout() {
1566    if (offloadingAudio()) {
1567        mWakeLock->release(true);
1568        ++mAudioOffloadPauseTimeoutGeneration;
1569    }
1570}
1571
1572status_t NuPlayer::Renderer::onOpenAudioSink(
1573        const sp<AMessage> &format,
1574        bool offloadOnly,
1575        bool hasVideo,
1576        uint32_t flags) {
1577    ALOGV("openAudioSink: offloadOnly(%d) offloadingAudio(%d)",
1578            offloadOnly, offloadingAudio());
1579    bool audioSinkChanged = false;
1580
1581    int32_t numChannels;
1582    CHECK(format->findInt32("channel-count", &numChannels));
1583
1584    int32_t channelMask;
1585    if (!format->findInt32("channel-mask", &channelMask)) {
1586        // signal to the AudioSink to derive the mask from count.
1587        channelMask = CHANNEL_MASK_USE_CHANNEL_ORDER;
1588    }
1589
1590    int32_t sampleRate;
1591    CHECK(format->findInt32("sample-rate", &sampleRate));
1592
1593    if (offloadingAudio()) {
1594        audio_format_t audioFormat = AUDIO_FORMAT_PCM_16_BIT;
1595        AString mime;
1596        CHECK(format->findString("mime", &mime));
1597        status_t err = mapMimeToAudioFormat(audioFormat, mime.c_str());
1598
1599        if (err != OK) {
1600            ALOGE("Couldn't map mime \"%s\" to a valid "
1601                    "audio_format", mime.c_str());
1602            onDisableOffloadAudio();
1603        } else {
1604            ALOGV("Mime \"%s\" mapped to audio_format 0x%x",
1605                    mime.c_str(), audioFormat);
1606
1607            int avgBitRate = -1;
1608            format->findInt32("bit-rate", &avgBitRate);
1609
1610            int32_t aacProfile = -1;
1611            if (audioFormat == AUDIO_FORMAT_AAC
1612                    && format->findInt32("aac-profile", &aacProfile)) {
1613                // Redefine AAC format as per aac profile
1614                mapAACProfileToAudioFormat(
1615                        audioFormat,
1616                        aacProfile);
1617            }
1618
1619            audio_offload_info_t offloadInfo = AUDIO_INFO_INITIALIZER;
1620            offloadInfo.duration_us = -1;
1621            format->findInt64(
1622                    "durationUs", &offloadInfo.duration_us);
1623            offloadInfo.sample_rate = sampleRate;
1624            offloadInfo.channel_mask = channelMask;
1625            offloadInfo.format = audioFormat;
1626            offloadInfo.stream_type = AUDIO_STREAM_MUSIC;
1627            offloadInfo.bit_rate = avgBitRate;
1628            offloadInfo.has_video = hasVideo;
1629            offloadInfo.is_streaming = true;
1630
1631            if (memcmp(&mCurrentOffloadInfo, &offloadInfo, sizeof(offloadInfo)) == 0) {
1632                ALOGV("openAudioSink: no change in offload mode");
1633                // no change from previous configuration, everything ok.
1634                return OK;
1635            }
1636            mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1637
1638            ALOGV("openAudioSink: try to open AudioSink in offload mode");
1639            uint32_t offloadFlags = flags;
1640            offloadFlags |= AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1641            offloadFlags &= ~AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
1642            audioSinkChanged = true;
1643            mAudioSink->close();
1644
1645            err = mAudioSink->open(
1646                    sampleRate,
1647                    numChannels,
1648                    (audio_channel_mask_t)channelMask,
1649                    audioFormat,
1650                    0 /* bufferCount - unused */,
1651                    &NuPlayer::Renderer::AudioSinkCallback,
1652                    this,
1653                    (audio_output_flags_t)offloadFlags,
1654                    &offloadInfo);
1655
1656            if (err == OK) {
1657                err = mAudioSink->setPlaybackRate(mPlaybackSettings);
1658            }
1659
1660            if (err == OK) {
1661                // If the playback is offloaded to h/w, we pass
1662                // the HAL some metadata information.
1663                // We don't want to do this for PCM because it
1664                // will be going through the AudioFlinger mixer
1665                // before reaching the hardware.
1666                // TODO
1667                mCurrentOffloadInfo = offloadInfo;
1668                err = mAudioSink->start();
1669                ALOGV_IF(err == OK, "openAudioSink: offload succeeded");
1670            }
1671            if (err != OK) {
1672                // Clean up, fall back to non offload mode.
1673                mAudioSink->close();
1674                onDisableOffloadAudio();
1675                mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1676                ALOGV("openAudioSink: offload failed");
1677            }
1678            mUseAudioCallback = true;  // offload mode transfers data through callback
1679        }
1680    }
1681    if (!offloadOnly && !offloadingAudio()) {
1682        ALOGV("openAudioSink: open AudioSink in NON-offload mode");
1683        uint32_t pcmFlags = flags;
1684        pcmFlags &= ~AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1685
1686        const PcmInfo info = {
1687                (audio_channel_mask_t)channelMask,
1688                (audio_output_flags_t)pcmFlags,
1689                AUDIO_FORMAT_PCM_16_BIT, // TODO: change to audioFormat
1690                numChannels,
1691                sampleRate
1692        };
1693        if (memcmp(&mCurrentPcmInfo, &info, sizeof(info)) == 0) {
1694            ALOGV("openAudioSink: no change in pcm mode");
1695            // no change from previous configuration, everything ok.
1696            return OK;
1697        }
1698
1699        audioSinkChanged = true;
1700        mAudioSink->close();
1701        mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1702        // Note: It is possible to set up the callback, but not use it to send audio data.
1703        // This requires a fix in AudioSink to explicitly specify the transfer mode.
1704        mUseAudioCallback = getUseAudioCallbackSetting();
1705
1706        // Compute the desired buffer size.
1707        // For callback mode, the amount of time before wakeup is about half the buffer size.
1708        const uint32_t frameCount =
1709                (unsigned long long)sampleRate * getAudioSinkPcmMsSetting() / 1000;
1710
1711        status_t err = mAudioSink->open(
1712                    sampleRate,
1713                    numChannels,
1714                    (audio_channel_mask_t)channelMask,
1715                    AUDIO_FORMAT_PCM_16_BIT,
1716                    0 /* bufferCount - unused */,
1717                    mUseAudioCallback ? &NuPlayer::Renderer::AudioSinkCallback : NULL,
1718                    mUseAudioCallback ? this : NULL,
1719                    (audio_output_flags_t)pcmFlags,
1720                    NULL,
1721                    true /* doNotReconnect */,
1722                    frameCount);
1723        if (err == OK) {
1724            err = mAudioSink->setPlaybackRate(mPlaybackSettings);
1725        }
1726        if (err != OK) {
1727            ALOGW("openAudioSink: non offloaded open failed status: %d", err);
1728            mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1729            return err;
1730        }
1731        mCurrentPcmInfo = info;
1732        mAudioSink->start();
1733    }
1734    if (audioSinkChanged) {
1735        onAudioSinkChanged();
1736    }
1737    mAudioTornDown = false;
1738    return OK;
1739}
1740
1741void NuPlayer::Renderer::onCloseAudioSink() {
1742    mAudioSink->close();
1743    mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1744    mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1745}
1746
1747}  // namespace android
1748
1749