NuPlayerRenderer.cpp revision 3b0cd26dbb0ce37d220db9ff0fa8172a7ef1c5cb 
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            clearAudioFirstAnchorTime_l();
270            ++mAudioQueueGeneration;
271            ++mAudioDrainGeneration;
272        } else {
273            mNotifyCompleteVideo |= notifyComplete;
274            ++mVideoQueueGeneration;
275            ++mVideoDrainGeneration;
276        }
277
278        clearAnchorTime_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            mDrainAudioQueuePending = false;
429
430            int32_t generation;
431            CHECK(msg->findInt32("drainGeneration", &generation));
432            if (generation != getDrainGeneration(true /* audio */)) {
433                break;
434            }
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 || mUseAudioCallback) {
627        return;
628    }
629
630    if (mAudioQueue.empty()) {
631        return;
632    }
633
634    mDrainAudioQueuePending = true;
635    sp<AMessage> msg = new AMessage(kWhatDrainAudioQueue, this);
636    msg->setInt32("drainGeneration", mAudioDrainGeneration);
637    msg->post(delayUs);
638}
639
640void NuPlayer::Renderer::prepareForMediaRenderingStart_l() {
641    mAudioRenderingStartGeneration = mAudioDrainGeneration;
642    mVideoRenderingStartGeneration = mVideoDrainGeneration;
643}
644
645void NuPlayer::Renderer::notifyIfMediaRenderingStarted_l() {
646    if (mVideoRenderingStartGeneration == mVideoDrainGeneration &&
647        mAudioRenderingStartGeneration == mAudioDrainGeneration) {
648        mVideoRenderingStartGeneration = -1;
649        mAudioRenderingStartGeneration = -1;
650
651        sp<AMessage> notify = mNotify->dup();
652        notify->setInt32("what", kWhatMediaRenderingStart);
653        notify->post();
654    }
655}
656
657// static
658size_t NuPlayer::Renderer::AudioSinkCallback(
659        MediaPlayerBase::AudioSink * /* audioSink */,
660        void *buffer,
661        size_t size,
662        void *cookie,
663        MediaPlayerBase::AudioSink::cb_event_t event) {
664    NuPlayer::Renderer *me = (NuPlayer::Renderer *)cookie;
665
666    switch (event) {
667        case MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER:
668        {
669            return me->fillAudioBuffer(buffer, size);
670            break;
671        }
672
673        case MediaPlayerBase::AudioSink::CB_EVENT_STREAM_END:
674        {
675            ALOGV("AudioSink::CB_EVENT_STREAM_END");
676            me->notifyEOS(true /* audio */, ERROR_END_OF_STREAM);
677            break;
678        }
679
680        case MediaPlayerBase::AudioSink::CB_EVENT_TEAR_DOWN:
681        {
682            ALOGV("AudioSink::CB_EVENT_TEAR_DOWN");
683            me->notifyAudioTearDown();
684            break;
685        }
686    }
687
688    return 0;
689}
690
691size_t NuPlayer::Renderer::fillAudioBuffer(void *buffer, size_t size) {
692    Mutex::Autolock autoLock(mLock);
693
694    if (!mUseAudioCallback) {
695        return 0;
696    }
697
698    bool hasEOS = false;
699
700    size_t sizeCopied = 0;
701    bool firstEntry = true;
702    QueueEntry *entry;  // will be valid after while loop if hasEOS is set.
703    while (sizeCopied < size && !mAudioQueue.empty()) {
704        entry = &*mAudioQueue.begin();
705
706        if (entry->mBuffer == NULL) { // EOS
707            hasEOS = true;
708            mAudioQueue.erase(mAudioQueue.begin());
709            break;
710        }
711
712        if (firstEntry && entry->mOffset == 0) {
713            firstEntry = false;
714            int64_t mediaTimeUs;
715            CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
716            ALOGV("fillAudioBuffer: rendering audio at media time %.2f secs", mediaTimeUs / 1E6);
717            setAudioFirstAnchorTimeIfNeeded_l(mediaTimeUs);
718        }
719
720        size_t copy = entry->mBuffer->size() - entry->mOffset;
721        size_t sizeRemaining = size - sizeCopied;
722        if (copy > sizeRemaining) {
723            copy = sizeRemaining;
724        }
725
726        memcpy((char *)buffer + sizeCopied,
727               entry->mBuffer->data() + entry->mOffset,
728               copy);
729
730        entry->mOffset += copy;
731        if (entry->mOffset == entry->mBuffer->size()) {
732            entry->mNotifyConsumed->post();
733            mAudioQueue.erase(mAudioQueue.begin());
734            entry = NULL;
735        }
736        sizeCopied += copy;
737
738        notifyIfMediaRenderingStarted_l();
739    }
740
741    if (mAudioFirstAnchorTimeMediaUs >= 0) {
742        int64_t nowUs = ALooper::GetNowUs();
743        int64_t nowMediaUs =
744            mAudioFirstAnchorTimeMediaUs + getPlayedOutAudioDurationUs(nowUs);
745        // we don't know how much data we are queueing for offloaded tracks.
746        mMediaClock->updateAnchor(nowMediaUs, nowUs, INT64_MAX);
747    }
748
749    // for non-offloaded audio, we need to compute the frames written because
750    // there is no EVENT_STREAM_END notification. The frames written gives
751    // an estimate on the pending played out duration.
752    if (!offloadingAudio()) {
753        mNumFramesWritten += sizeCopied / mAudioSink->frameSize();
754    }
755
756    if (hasEOS) {
757        (new AMessage(kWhatStopAudioSink, this))->post();
758        // As there is currently no EVENT_STREAM_END callback notification for
759        // non-offloaded audio tracks, we need to post the EOS ourselves.
760        if (!offloadingAudio()) {
761            int64_t postEOSDelayUs = 0;
762            if (mAudioSink->needsTrailingPadding()) {
763                postEOSDelayUs = getPendingAudioPlayoutDurationUs(ALooper::GetNowUs());
764            }
765            ALOGV("fillAudioBuffer: notifyEOS "
766                    "mNumFramesWritten:%u  finalResult:%d  postEOSDelay:%lld",
767                    mNumFramesWritten, entry->mFinalResult, (long long)postEOSDelayUs);
768            notifyEOS(true /* audio */, entry->mFinalResult, postEOSDelayUs);
769        }
770    }
771    return sizeCopied;
772}
773
774void NuPlayer::Renderer::drainAudioQueueUntilLastEOS() {
775    List<QueueEntry>::iterator it = mAudioQueue.begin(), itEOS = it;
776    bool foundEOS = false;
777    while (it != mAudioQueue.end()) {
778        int32_t eos;
779        QueueEntry *entry = &*it++;
780        if (entry->mBuffer == NULL
781                || (entry->mNotifyConsumed->findInt32("eos", &eos) && eos != 0)) {
782            itEOS = it;
783            foundEOS = true;
784        }
785    }
786
787    if (foundEOS) {
788        // post all replies before EOS and drop the samples
789        for (it = mAudioQueue.begin(); it != itEOS; it++) {
790            if (it->mBuffer == NULL) {
791                // delay doesn't matter as we don't even have an AudioTrack
792                notifyEOS(true /* audio */, it->mFinalResult);
793            } else {
794                it->mNotifyConsumed->post();
795            }
796        }
797        mAudioQueue.erase(mAudioQueue.begin(), itEOS);
798    }
799}
800
801bool NuPlayer::Renderer::onDrainAudioQueue() {
802    // TODO: This call to getPosition checks if AudioTrack has been created
803    // in AudioSink before draining audio. If AudioTrack doesn't exist, then
804    // CHECKs on getPosition will fail.
805    // We still need to figure out why AudioTrack is not created when
806    // this function is called. One possible reason could be leftover
807    // audio. Another possible place is to check whether decoder
808    // has received INFO_FORMAT_CHANGED as the first buffer since
809    // AudioSink is opened there, and possible interactions with flush
810    // immediately after start. Investigate error message
811    // "vorbis_dsp_synthesis returned -135", along with RTSP.
812    uint32_t numFramesPlayed;
813    if (mAudioSink->getPosition(&numFramesPlayed) != OK) {
814        // When getPosition fails, renderer will not reschedule the draining
815        // unless new samples are queued.
816        // If we have pending EOS (or "eos" marker for discontinuities), we need
817        // to post these now as NuPlayerDecoder might be waiting for it.
818        drainAudioQueueUntilLastEOS();
819
820        ALOGW("onDrainAudioQueue(): audio sink is not ready");
821        return false;
822    }
823
824#if 0
825    ssize_t numFramesAvailableToWrite =
826        mAudioSink->frameCount() - (mNumFramesWritten - numFramesPlayed);
827
828    if (numFramesAvailableToWrite == mAudioSink->frameCount()) {
829        ALOGI("audio sink underrun");
830    } else {
831        ALOGV("audio queue has %d frames left to play",
832             mAudioSink->frameCount() - numFramesAvailableToWrite);
833    }
834#endif
835
836    uint32_t prevFramesWritten = mNumFramesWritten;
837    while (!mAudioQueue.empty()) {
838        QueueEntry *entry = &*mAudioQueue.begin();
839
840        mLastAudioBufferDrained = entry->mBufferOrdinal;
841
842        if (entry->mBuffer == NULL) {
843            // EOS
844            int64_t postEOSDelayUs = 0;
845            if (mAudioSink->needsTrailingPadding()) {
846                postEOSDelayUs = getPendingAudioPlayoutDurationUs(ALooper::GetNowUs());
847            }
848            notifyEOS(true /* audio */, entry->mFinalResult, postEOSDelayUs);
849
850            mAudioQueue.erase(mAudioQueue.begin());
851            entry = NULL;
852            if (mAudioSink->needsTrailingPadding()) {
853                // If we're not in gapless playback (i.e. through setNextPlayer), we
854                // need to stop the track here, because that will play out the last
855                // little bit at the end of the file. Otherwise short files won't play.
856                mAudioSink->stop();
857                mNumFramesWritten = 0;
858            }
859            return false;
860        }
861
862        // ignore 0-sized buffer which could be EOS marker with no data
863        if (entry->mOffset == 0 && entry->mBuffer->size() > 0) {
864            int64_t mediaTimeUs;
865            CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
866            ALOGV("onDrainAudioQueue: rendering audio at media time %.2f secs",
867                    mediaTimeUs / 1E6);
868            onNewAudioMediaTime(mediaTimeUs);
869        }
870
871        size_t copy = entry->mBuffer->size() - entry->mOffset;
872
873        ssize_t written = mAudioSink->write(entry->mBuffer->data() + entry->mOffset,
874                                            copy, false /* blocking */);
875        if (written < 0) {
876            // An error in AudioSink write. Perhaps the AudioSink was not properly opened.
877            if (written == WOULD_BLOCK) {
878                ALOGV("AudioSink write would block when writing %zu bytes", copy);
879            } else {
880                ALOGE("AudioSink write error(%zd) when writing %zu bytes", written, copy);
881                notifyAudioTearDown();
882            }
883            break;
884        }
885
886        entry->mOffset += written;
887        if (entry->mOffset == entry->mBuffer->size()) {
888            entry->mNotifyConsumed->post();
889            mAudioQueue.erase(mAudioQueue.begin());
890
891            entry = NULL;
892        }
893
894        size_t copiedFrames = written / mAudioSink->frameSize();
895        mNumFramesWritten += copiedFrames;
896
897        {
898            Mutex::Autolock autoLock(mLock);
899            notifyIfMediaRenderingStarted_l();
900        }
901
902        if (written != (ssize_t)copy) {
903            // A short count was received from AudioSink::write()
904            //
905            // AudioSink write is called in non-blocking mode.
906            // It may return with a short count when:
907            //
908            // 1) Size to be copied is not a multiple of the frame size. We consider this fatal.
909            // 2) The data to be copied exceeds the available buffer in AudioSink.
910            // 3) An error occurs and data has been partially copied to the buffer in AudioSink.
911            // 4) AudioSink is an AudioCache for data retrieval, and the AudioCache is exceeded.
912
913            // (Case 1)
914            // Must be a multiple of the frame size.  If it is not a multiple of a frame size, it
915            // needs to fail, as we should not carry over fractional frames between calls.
916            CHECK_EQ(copy % mAudioSink->frameSize(), 0);
917
918            // (Case 2, 3, 4)
919            // Return early to the caller.
920            // Beware of calling immediately again as this may busy-loop if you are not careful.
921            ALOGV("AudioSink write short frame count %zd < %zu", written, copy);
922            break;
923        }
924    }
925    int64_t maxTimeMedia;
926    {
927        Mutex::Autolock autoLock(mLock);
928        maxTimeMedia =
929            mAnchorTimeMediaUs +
930                    (int64_t)(max((long long)mNumFramesWritten - mAnchorNumFramesWritten, 0LL)
931                            * 1000LL * mAudioSink->msecsPerFrame());
932    }
933    mMediaClock->updateMaxTimeMedia(maxTimeMedia);
934
935    // calculate whether we need to reschedule another write.
936    bool reschedule = !mAudioQueue.empty()
937            && (!mPaused
938                || prevFramesWritten != mNumFramesWritten); // permit pause to fill buffers
939    //ALOGD("reschedule:%d  empty:%d  mPaused:%d  prevFramesWritten:%u  mNumFramesWritten:%u",
940    //        reschedule, mAudioQueue.empty(), mPaused, prevFramesWritten, mNumFramesWritten);
941    return reschedule;
942}
943
944int64_t NuPlayer::Renderer::getDurationUsIfPlayedAtSampleRate(uint32_t numFrames) {
945    int32_t sampleRate = offloadingAudio() ?
946            mCurrentOffloadInfo.sample_rate : mCurrentPcmInfo.mSampleRate;
947    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
948    return (int64_t)((int32_t)numFrames * 1000000LL / sampleRate);
949}
950
951// Calculate duration of pending samples if played at normal rate (i.e., 1.0).
952int64_t NuPlayer::Renderer::getPendingAudioPlayoutDurationUs(int64_t nowUs) {
953    int64_t writtenAudioDurationUs = getDurationUsIfPlayedAtSampleRate(mNumFramesWritten);
954    return writtenAudioDurationUs - getPlayedOutAudioDurationUs(nowUs);
955}
956
957int64_t NuPlayer::Renderer::getRealTimeUs(int64_t mediaTimeUs, int64_t nowUs) {
958    int64_t realUs;
959    if (mMediaClock->getRealTimeFor(mediaTimeUs, &realUs) != OK) {
960        // If failed to get current position, e.g. due to audio clock is
961        // not ready, then just play out video immediately without delay.
962        return nowUs;
963    }
964    return realUs;
965}
966
967void NuPlayer::Renderer::onNewAudioMediaTime(int64_t mediaTimeUs) {
968    Mutex::Autolock autoLock(mLock);
969    // TRICKY: vorbis decoder generates multiple frames with the same
970    // timestamp, so only update on the first frame with a given timestamp
971    if (mediaTimeUs == mAnchorTimeMediaUs) {
972        return;
973    }
974    setAudioFirstAnchorTimeIfNeeded_l(mediaTimeUs);
975    int64_t nowUs = ALooper::GetNowUs();
976    int64_t nowMediaUs = mediaTimeUs - getPendingAudioPlayoutDurationUs(nowUs);
977    mMediaClock->updateAnchor(nowMediaUs, nowUs, mediaTimeUs);
978    mAnchorNumFramesWritten = mNumFramesWritten;
979    mAnchorTimeMediaUs = mediaTimeUs;
980}
981
982// Called without mLock acquired.
983void NuPlayer::Renderer::postDrainVideoQueue() {
984    if (mDrainVideoQueuePending
985            || getSyncQueues()
986            || (mPaused && mVideoSampleReceived)) {
987        return;
988    }
989
990    if (mVideoQueue.empty()) {
991        return;
992    }
993
994    QueueEntry &entry = *mVideoQueue.begin();
995
996    sp<AMessage> msg = new AMessage(kWhatDrainVideoQueue, this);
997    msg->setInt32("drainGeneration", getDrainGeneration(false /* audio */));
998
999    if (entry.mBuffer == NULL) {
1000        // EOS doesn't carry a timestamp.
1001        msg->post();
1002        mDrainVideoQueuePending = true;
1003        return;
1004    }
1005
1006    int64_t delayUs;
1007    int64_t nowUs = ALooper::GetNowUs();
1008    int64_t realTimeUs;
1009    if (mFlags & FLAG_REAL_TIME) {
1010        int64_t mediaTimeUs;
1011        CHECK(entry.mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
1012        realTimeUs = mediaTimeUs;
1013    } else {
1014        int64_t mediaTimeUs;
1015        CHECK(entry.mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
1016
1017        {
1018            Mutex::Autolock autoLock(mLock);
1019            if (mAnchorTimeMediaUs < 0) {
1020                mMediaClock->updateAnchor(mediaTimeUs, nowUs, mediaTimeUs);
1021                mAnchorTimeMediaUs = mediaTimeUs;
1022                realTimeUs = nowUs;
1023            } else {
1024                realTimeUs = getRealTimeUs(mediaTimeUs, nowUs);
1025            }
1026        }
1027        if (!mHasAudio) {
1028            // smooth out videos >= 10fps
1029            mMediaClock->updateMaxTimeMedia(mediaTimeUs + 100000);
1030        }
1031
1032        // Heuristics to handle situation when media time changed without a
1033        // discontinuity. If we have not drained an audio buffer that was
1034        // received after this buffer, repost in 10 msec. Otherwise repost
1035        // in 500 msec.
1036        delayUs = realTimeUs - nowUs;
1037        if (delayUs > 500000) {
1038            int64_t postDelayUs = 500000;
1039            if (mHasAudio && (mLastAudioBufferDrained - entry.mBufferOrdinal) <= 0) {
1040                postDelayUs = 10000;
1041            }
1042            msg->setWhat(kWhatPostDrainVideoQueue);
1043            msg->post(postDelayUs);
1044            mVideoScheduler->restart();
1045            ALOGI("possible video time jump of %dms, retrying in %dms",
1046                    (int)(delayUs / 1000), (int)(postDelayUs / 1000));
1047            mDrainVideoQueuePending = true;
1048            return;
1049        }
1050    }
1051
1052    realTimeUs = mVideoScheduler->schedule(realTimeUs * 1000) / 1000;
1053    int64_t twoVsyncsUs = 2 * (mVideoScheduler->getVsyncPeriod() / 1000);
1054
1055    delayUs = realTimeUs - nowUs;
1056
1057    ALOGW_IF(delayUs > 500000, "unusually high delayUs: %" PRId64, delayUs);
1058    // post 2 display refreshes before rendering is due
1059    msg->post(delayUs > twoVsyncsUs ? delayUs - twoVsyncsUs : 0);
1060
1061    mDrainVideoQueuePending = true;
1062}
1063
1064void NuPlayer::Renderer::onDrainVideoQueue() {
1065    if (mVideoQueue.empty()) {
1066        return;
1067    }
1068
1069    QueueEntry *entry = &*mVideoQueue.begin();
1070
1071    if (entry->mBuffer == NULL) {
1072        // EOS
1073
1074        notifyEOS(false /* audio */, entry->mFinalResult);
1075
1076        mVideoQueue.erase(mVideoQueue.begin());
1077        entry = NULL;
1078
1079        setVideoLateByUs(0);
1080        return;
1081    }
1082
1083    int64_t nowUs = -1;
1084    int64_t realTimeUs;
1085    if (mFlags & FLAG_REAL_TIME) {
1086        CHECK(entry->mBuffer->meta()->findInt64("timeUs", &realTimeUs));
1087    } else {
1088        int64_t mediaTimeUs;
1089        CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
1090
1091        nowUs = ALooper::GetNowUs();
1092        realTimeUs = getRealTimeUs(mediaTimeUs, nowUs);
1093    }
1094
1095    bool tooLate = false;
1096
1097    if (!mPaused) {
1098        if (nowUs == -1) {
1099            nowUs = ALooper::GetNowUs();
1100        }
1101        setVideoLateByUs(nowUs - realTimeUs);
1102        tooLate = (mVideoLateByUs > 40000);
1103
1104        if (tooLate) {
1105            ALOGV("video late by %lld us (%.2f secs)",
1106                 (long long)mVideoLateByUs, mVideoLateByUs / 1E6);
1107        } else {
1108            int64_t mediaUs = 0;
1109            mMediaClock->getMediaTime(realTimeUs, &mediaUs);
1110            ALOGV("rendering video at media time %.2f secs",
1111                    (mFlags & FLAG_REAL_TIME ? realTimeUs :
1112                    mediaUs) / 1E6);
1113        }
1114    } else {
1115        setVideoLateByUs(0);
1116        if (!mVideoSampleReceived && !mHasAudio) {
1117            // This will ensure that the first frame after a flush won't be used as anchor
1118            // when renderer is in paused state, because resume can happen any time after seek.
1119            Mutex::Autolock autoLock(mLock);
1120            clearAnchorTime_l();
1121        }
1122    }
1123
1124    entry->mNotifyConsumed->setInt64("timestampNs", realTimeUs * 1000ll);
1125    entry->mNotifyConsumed->setInt32("render", !tooLate);
1126    entry->mNotifyConsumed->post();
1127    mVideoQueue.erase(mVideoQueue.begin());
1128    entry = NULL;
1129
1130    mVideoSampleReceived = true;
1131
1132    if (!mPaused) {
1133        if (!mVideoRenderingStarted) {
1134            mVideoRenderingStarted = true;
1135            notifyVideoRenderingStart();
1136        }
1137        Mutex::Autolock autoLock(mLock);
1138        notifyIfMediaRenderingStarted_l();
1139    }
1140}
1141
1142void NuPlayer::Renderer::notifyVideoRenderingStart() {
1143    sp<AMessage> notify = mNotify->dup();
1144    notify->setInt32("what", kWhatVideoRenderingStart);
1145    notify->post();
1146}
1147
1148void NuPlayer::Renderer::notifyEOS(bool audio, status_t finalResult, int64_t delayUs) {
1149    sp<AMessage> notify = mNotify->dup();
1150    notify->setInt32("what", kWhatEOS);
1151    notify->setInt32("audio", static_cast<int32_t>(audio));
1152    notify->setInt32("finalResult", finalResult);
1153    notify->post(delayUs);
1154}
1155
1156void NuPlayer::Renderer::notifyAudioTearDown() {
1157    (new AMessage(kWhatAudioTearDown, this))->post();
1158}
1159
1160void NuPlayer::Renderer::onQueueBuffer(const sp<AMessage> &msg) {
1161    int32_t audio;
1162    CHECK(msg->findInt32("audio", &audio));
1163
1164    if (dropBufferIfStale(audio, msg)) {
1165        return;
1166    }
1167
1168    if (audio) {
1169        mHasAudio = true;
1170    } else {
1171        mHasVideo = true;
1172    }
1173
1174    if (mHasVideo) {
1175        if (mVideoScheduler == NULL) {
1176            mVideoScheduler = new VideoFrameScheduler();
1177            mVideoScheduler->init();
1178        }
1179    }
1180
1181    sp<ABuffer> buffer;
1182    CHECK(msg->findBuffer("buffer", &buffer));
1183
1184    sp<AMessage> notifyConsumed;
1185    CHECK(msg->findMessage("notifyConsumed", &notifyConsumed));
1186
1187    QueueEntry entry;
1188    entry.mBuffer = buffer;
1189    entry.mNotifyConsumed = notifyConsumed;
1190    entry.mOffset = 0;
1191    entry.mFinalResult = OK;
1192    entry.mBufferOrdinal = ++mTotalBuffersQueued;
1193
1194    if (audio) {
1195        Mutex::Autolock autoLock(mLock);
1196        mAudioQueue.push_back(entry);
1197        postDrainAudioQueue_l();
1198    } else {
1199        mVideoQueue.push_back(entry);
1200        postDrainVideoQueue();
1201    }
1202
1203    Mutex::Autolock autoLock(mLock);
1204    if (!mSyncQueues || mAudioQueue.empty() || mVideoQueue.empty()) {
1205        return;
1206    }
1207
1208    sp<ABuffer> firstAudioBuffer = (*mAudioQueue.begin()).mBuffer;
1209    sp<ABuffer> firstVideoBuffer = (*mVideoQueue.begin()).mBuffer;
1210
1211    if (firstAudioBuffer == NULL || firstVideoBuffer == NULL) {
1212        // EOS signalled on either queue.
1213        syncQueuesDone_l();
1214        return;
1215    }
1216
1217    int64_t firstAudioTimeUs;
1218    int64_t firstVideoTimeUs;
1219    CHECK(firstAudioBuffer->meta()
1220            ->findInt64("timeUs", &firstAudioTimeUs));
1221    CHECK(firstVideoBuffer->meta()
1222            ->findInt64("timeUs", &firstVideoTimeUs));
1223
1224    int64_t diff = firstVideoTimeUs - firstAudioTimeUs;
1225
1226    ALOGV("queueDiff = %.2f secs", diff / 1E6);
1227
1228    if (diff > 100000ll) {
1229        // Audio data starts More than 0.1 secs before video.
1230        // Drop some audio.
1231
1232        (*mAudioQueue.begin()).mNotifyConsumed->post();
1233        mAudioQueue.erase(mAudioQueue.begin());
1234        return;
1235    }
1236
1237    syncQueuesDone_l();
1238}
1239
1240void NuPlayer::Renderer::syncQueuesDone_l() {
1241    if (!mSyncQueues) {
1242        return;
1243    }
1244
1245    mSyncQueues = false;
1246
1247    if (!mAudioQueue.empty()) {
1248        postDrainAudioQueue_l();
1249    }
1250
1251    if (!mVideoQueue.empty()) {
1252        mLock.unlock();
1253        postDrainVideoQueue();
1254        mLock.lock();
1255    }
1256}
1257
1258void NuPlayer::Renderer::onQueueEOS(const sp<AMessage> &msg) {
1259    int32_t audio;
1260    CHECK(msg->findInt32("audio", &audio));
1261
1262    if (dropBufferIfStale(audio, msg)) {
1263        return;
1264    }
1265
1266    int32_t finalResult;
1267    CHECK(msg->findInt32("finalResult", &finalResult));
1268
1269    QueueEntry entry;
1270    entry.mOffset = 0;
1271    entry.mFinalResult = finalResult;
1272
1273    if (audio) {
1274        Mutex::Autolock autoLock(mLock);
1275        if (mAudioQueue.empty() && mSyncQueues) {
1276            syncQueuesDone_l();
1277        }
1278        mAudioQueue.push_back(entry);
1279        postDrainAudioQueue_l();
1280    } else {
1281        if (mVideoQueue.empty() && getSyncQueues()) {
1282            Mutex::Autolock autoLock(mLock);
1283            syncQueuesDone_l();
1284        }
1285        mVideoQueue.push_back(entry);
1286        postDrainVideoQueue();
1287    }
1288}
1289
1290void NuPlayer::Renderer::onFlush(const sp<AMessage> &msg) {
1291    int32_t audio, notifyComplete;
1292    CHECK(msg->findInt32("audio", &audio));
1293
1294    {
1295        Mutex::Autolock autoLock(mLock);
1296        if (audio) {
1297            notifyComplete = mNotifyCompleteAudio;
1298            mNotifyCompleteAudio = false;
1299        } else {
1300            notifyComplete = mNotifyCompleteVideo;
1301            mNotifyCompleteVideo = false;
1302        }
1303
1304        // If we're currently syncing the queues, i.e. dropping audio while
1305        // aligning the first audio/video buffer times and only one of the
1306        // two queues has data, we may starve that queue by not requesting
1307        // more buffers from the decoder. If the other source then encounters
1308        // a discontinuity that leads to flushing, we'll never find the
1309        // corresponding discontinuity on the other queue.
1310        // Therefore we'll stop syncing the queues if at least one of them
1311        // is flushed.
1312        syncQueuesDone_l();
1313        clearAnchorTime_l();
1314    }
1315
1316    ALOGV("flushing %s", audio ? "audio" : "video");
1317    if (audio) {
1318        {
1319            Mutex::Autolock autoLock(mLock);
1320            flushQueue(&mAudioQueue);
1321
1322            ++mAudioDrainGeneration;
1323            prepareForMediaRenderingStart_l();
1324
1325            // the frame count will be reset after flush.
1326            clearAudioFirstAnchorTime_l();
1327        }
1328
1329        mDrainAudioQueuePending = false;
1330
1331        if (offloadingAudio()) {
1332            mAudioSink->pause();
1333            mAudioSink->flush();
1334            if (!mPaused) {
1335                mAudioSink->start();
1336            }
1337        } else {
1338            mAudioSink->pause();
1339            mAudioSink->flush();
1340            // Call stop() to signal to the AudioSink to completely fill the
1341            // internal buffer before resuming playback.
1342            mAudioSink->stop();
1343            if (!mPaused) {
1344                mAudioSink->start();
1345            }
1346            mNumFramesWritten = 0;
1347        }
1348    } else {
1349        flushQueue(&mVideoQueue);
1350
1351        mDrainVideoQueuePending = false;
1352
1353        if (mVideoScheduler != NULL) {
1354            mVideoScheduler->restart();
1355        }
1356
1357        Mutex::Autolock autoLock(mLock);
1358        ++mVideoDrainGeneration;
1359        prepareForMediaRenderingStart_l();
1360    }
1361
1362    mVideoSampleReceived = false;
1363
1364    if (notifyComplete) {
1365        notifyFlushComplete(audio);
1366    }
1367}
1368
1369void NuPlayer::Renderer::flushQueue(List<QueueEntry> *queue) {
1370    while (!queue->empty()) {
1371        QueueEntry *entry = &*queue->begin();
1372
1373        if (entry->mBuffer != NULL) {
1374            entry->mNotifyConsumed->post();
1375        }
1376
1377        queue->erase(queue->begin());
1378        entry = NULL;
1379    }
1380}
1381
1382void NuPlayer::Renderer::notifyFlushComplete(bool audio) {
1383    sp<AMessage> notify = mNotify->dup();
1384    notify->setInt32("what", kWhatFlushComplete);
1385    notify->setInt32("audio", static_cast<int32_t>(audio));
1386    notify->post();
1387}
1388
1389bool NuPlayer::Renderer::dropBufferIfStale(
1390        bool audio, const sp<AMessage> &msg) {
1391    int32_t queueGeneration;
1392    CHECK(msg->findInt32("queueGeneration", &queueGeneration));
1393
1394    if (queueGeneration == getQueueGeneration(audio)) {
1395        return false;
1396    }
1397
1398    sp<AMessage> notifyConsumed;
1399    if (msg->findMessage("notifyConsumed", &notifyConsumed)) {
1400        notifyConsumed->post();
1401    }
1402
1403    return true;
1404}
1405
1406void NuPlayer::Renderer::onAudioSinkChanged() {
1407    if (offloadingAudio()) {
1408        return;
1409    }
1410    CHECK(!mDrainAudioQueuePending);
1411    mNumFramesWritten = 0;
1412    {
1413        Mutex::Autolock autoLock(mLock);
1414        mAnchorNumFramesWritten = -1;
1415    }
1416    uint32_t written;
1417    if (mAudioSink->getFramesWritten(&written) == OK) {
1418        mNumFramesWritten = written;
1419    }
1420}
1421
1422void NuPlayer::Renderer::onDisableOffloadAudio() {
1423    Mutex::Autolock autoLock(mLock);
1424    mFlags &= ~FLAG_OFFLOAD_AUDIO;
1425    ++mAudioDrainGeneration;
1426}
1427
1428void NuPlayer::Renderer::onEnableOffloadAudio() {
1429    Mutex::Autolock autoLock(mLock);
1430    mFlags |= FLAG_OFFLOAD_AUDIO;
1431    ++mAudioDrainGeneration;
1432}
1433
1434void NuPlayer::Renderer::onPause() {
1435    if (mPaused) {
1436        return;
1437    }
1438
1439    {
1440        Mutex::Autolock autoLock(mLock);
1441        // we do not increment audio drain generation so that we fill audio buffer during pause.
1442        ++mVideoDrainGeneration;
1443        prepareForMediaRenderingStart_l();
1444        mPaused = true;
1445        mMediaClock->setPlaybackRate(0.0);
1446    }
1447
1448    mDrainAudioQueuePending = false;
1449    mDrainVideoQueuePending = false;
1450
1451    if (mHasAudio) {
1452        mAudioSink->pause();
1453        startAudioOffloadPauseTimeout();
1454    }
1455
1456    ALOGV("now paused audio queue has %zu entries, video has %zu entries",
1457          mAudioQueue.size(), mVideoQueue.size());
1458}
1459
1460void NuPlayer::Renderer::onResume() {
1461    if (!mPaused) {
1462        return;
1463    }
1464
1465    if (mHasAudio) {
1466        cancelAudioOffloadPauseTimeout();
1467        mAudioSink->start();
1468    }
1469
1470    {
1471        Mutex::Autolock autoLock(mLock);
1472        mPaused = false;
1473
1474        // configure audiosink as we did not do it when pausing
1475        if (mAudioSink != NULL && mAudioSink->ready()) {
1476            mAudioSink->setPlaybackRate(mPlaybackSettings);
1477        }
1478
1479        mMediaClock->setPlaybackRate(mPlaybackRate);
1480
1481        if (!mAudioQueue.empty()) {
1482            postDrainAudioQueue_l();
1483        }
1484    }
1485
1486    if (!mVideoQueue.empty()) {
1487        postDrainVideoQueue();
1488    }
1489}
1490
1491void NuPlayer::Renderer::onSetVideoFrameRate(float fps) {
1492    if (mVideoScheduler == NULL) {
1493        mVideoScheduler = new VideoFrameScheduler();
1494    }
1495    mVideoScheduler->init(fps);
1496}
1497
1498int32_t NuPlayer::Renderer::getQueueGeneration(bool audio) {
1499    Mutex::Autolock autoLock(mLock);
1500    return (audio ? mAudioQueueGeneration : mVideoQueueGeneration);
1501}
1502
1503int32_t NuPlayer::Renderer::getDrainGeneration(bool audio) {
1504    Mutex::Autolock autoLock(mLock);
1505    return (audio ? mAudioDrainGeneration : mVideoDrainGeneration);
1506}
1507
1508bool NuPlayer::Renderer::getSyncQueues() {
1509    Mutex::Autolock autoLock(mLock);
1510    return mSyncQueues;
1511}
1512
1513// TODO: Remove unnecessary calls to getPlayedOutAudioDurationUs()
1514// as it acquires locks and may query the audio driver.
1515//
1516// Some calls could conceivably retrieve extrapolated data instead of
1517// accessing getTimestamp() or getPosition() every time a data buffer with
1518// a media time is received.
1519//
1520// Calculate duration of played samples if played at normal rate (i.e., 1.0).
1521int64_t NuPlayer::Renderer::getPlayedOutAudioDurationUs(int64_t nowUs) {
1522    uint32_t numFramesPlayed;
1523    int64_t numFramesPlayedAt;
1524    AudioTimestamp ts;
1525    static const int64_t kStaleTimestamp100ms = 100000;
1526
1527    status_t res = mAudioSink->getTimestamp(ts);
1528    if (res == OK) {                 // case 1: mixing audio tracks and offloaded tracks.
1529        numFramesPlayed = ts.mPosition;
1530        numFramesPlayedAt =
1531            ts.mTime.tv_sec * 1000000LL + ts.mTime.tv_nsec / 1000;
1532        const int64_t timestampAge = nowUs - numFramesPlayedAt;
1533        if (timestampAge > kStaleTimestamp100ms) {
1534            // This is an audio FIXME.
1535            // getTimestamp returns a timestamp which may come from audio mixing threads.
1536            // After pausing, the MixerThread may go idle, thus the mTime estimate may
1537            // become stale. Assuming that the MixerThread runs 20ms, with FastMixer at 5ms,
1538            // the max latency should be about 25ms with an average around 12ms (to be verified).
1539            // For safety we use 100ms.
1540            ALOGV("getTimestamp: returned stale timestamp nowUs(%lld) numFramesPlayedAt(%lld)",
1541                    (long long)nowUs, (long long)numFramesPlayedAt);
1542            numFramesPlayedAt = nowUs - kStaleTimestamp100ms;
1543        }
1544        //ALOGD("getTimestamp: OK %d %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1545    } else if (res == WOULD_BLOCK) { // case 2: transitory state on start of a new track
1546        numFramesPlayed = 0;
1547        numFramesPlayedAt = nowUs;
1548        //ALOGD("getTimestamp: WOULD_BLOCK %d %lld",
1549        //        numFramesPlayed, (long long)numFramesPlayedAt);
1550    } else {                         // case 3: transitory at new track or audio fast tracks.
1551        res = mAudioSink->getPosition(&numFramesPlayed);
1552        CHECK_EQ(res, (status_t)OK);
1553        numFramesPlayedAt = nowUs;
1554        numFramesPlayedAt += 1000LL * mAudioSink->latency() / 2; /* XXX */
1555        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1556    }
1557
1558    //CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
1559    int64_t durationUs = getDurationUsIfPlayedAtSampleRate(numFramesPlayed)
1560            + nowUs - numFramesPlayedAt;
1561    if (durationUs < 0) {
1562        // Occurs when numFramesPlayed position is very small and the following:
1563        // (1) In case 1, the time nowUs is computed before getTimestamp() is called and
1564        //     numFramesPlayedAt is greater than nowUs by time more than numFramesPlayed.
1565        // (2) In case 3, using getPosition and adding mAudioSink->latency() to
1566        //     numFramesPlayedAt, by a time amount greater than numFramesPlayed.
1567        //
1568        // Both of these are transitory conditions.
1569        ALOGV("getPlayedOutAudioDurationUs: negative duration %lld set to zero", (long long)durationUs);
1570        durationUs = 0;
1571    }
1572    ALOGV("getPlayedOutAudioDurationUs(%lld) nowUs(%lld) frames(%u) framesAt(%lld)",
1573            (long long)durationUs, (long long)nowUs, numFramesPlayed, (long long)numFramesPlayedAt);
1574    return durationUs;
1575}
1576
1577void NuPlayer::Renderer::onAudioTearDown(AudioTearDownReason reason) {
1578    if (mAudioTornDown) {
1579        return;
1580    }
1581    mAudioTornDown = true;
1582
1583    int64_t currentPositionUs;
1584    if (getCurrentPosition(&currentPositionUs) != OK) {
1585        currentPositionUs = 0;
1586    }
1587
1588    mAudioSink->stop();
1589    mAudioSink->flush();
1590
1591    sp<AMessage> notify = mNotify->dup();
1592    notify->setInt32("what", kWhatAudioTearDown);
1593    notify->setInt64("positionUs", currentPositionUs);
1594    notify->setInt32("reason", reason);
1595    notify->post();
1596}
1597
1598void NuPlayer::Renderer::startAudioOffloadPauseTimeout() {
1599    if (offloadingAudio()) {
1600        mWakeLock->acquire();
1601        sp<AMessage> msg = new AMessage(kWhatAudioOffloadPauseTimeout, this);
1602        msg->setInt32("drainGeneration", mAudioOffloadPauseTimeoutGeneration);
1603        msg->post(kOffloadPauseMaxUs);
1604    }
1605}
1606
1607void NuPlayer::Renderer::cancelAudioOffloadPauseTimeout() {
1608    if (offloadingAudio()) {
1609        mWakeLock->release(true);
1610        ++mAudioOffloadPauseTimeoutGeneration;
1611    }
1612}
1613
1614status_t NuPlayer::Renderer::onOpenAudioSink(
1615        const sp<AMessage> &format,
1616        bool offloadOnly,
1617        bool hasVideo,
1618        uint32_t flags) {
1619    ALOGV("openAudioSink: offloadOnly(%d) offloadingAudio(%d)",
1620            offloadOnly, offloadingAudio());
1621    bool audioSinkChanged = false;
1622
1623    int32_t numChannels;
1624    CHECK(format->findInt32("channel-count", &numChannels));
1625
1626    int32_t channelMask;
1627    if (!format->findInt32("channel-mask", &channelMask)) {
1628        // signal to the AudioSink to derive the mask from count.
1629        channelMask = CHANNEL_MASK_USE_CHANNEL_ORDER;
1630    }
1631
1632    int32_t sampleRate;
1633    CHECK(format->findInt32("sample-rate", &sampleRate));
1634
1635    if (offloadingAudio()) {
1636        audio_format_t audioFormat = AUDIO_FORMAT_PCM_16_BIT;
1637        AString mime;
1638        CHECK(format->findString("mime", &mime));
1639        status_t err = mapMimeToAudioFormat(audioFormat, mime.c_str());
1640
1641        if (err != OK) {
1642            ALOGE("Couldn't map mime \"%s\" to a valid "
1643                    "audio_format", mime.c_str());
1644            onDisableOffloadAudio();
1645        } else {
1646            ALOGV("Mime \"%s\" mapped to audio_format 0x%x",
1647                    mime.c_str(), audioFormat);
1648
1649            int avgBitRate = -1;
1650            format->findInt32("bit-rate", &avgBitRate);
1651
1652            int32_t aacProfile = -1;
1653            if (audioFormat == AUDIO_FORMAT_AAC
1654                    && format->findInt32("aac-profile", &aacProfile)) {
1655                // Redefine AAC format as per aac profile
1656                mapAACProfileToAudioFormat(
1657                        audioFormat,
1658                        aacProfile);
1659            }
1660
1661            audio_offload_info_t offloadInfo = AUDIO_INFO_INITIALIZER;
1662            offloadInfo.duration_us = -1;
1663            format->findInt64(
1664                    "durationUs", &offloadInfo.duration_us);
1665            offloadInfo.sample_rate = sampleRate;
1666            offloadInfo.channel_mask = channelMask;
1667            offloadInfo.format = audioFormat;
1668            offloadInfo.stream_type = AUDIO_STREAM_MUSIC;
1669            offloadInfo.bit_rate = avgBitRate;
1670            offloadInfo.has_video = hasVideo;
1671            offloadInfo.is_streaming = true;
1672
1673            if (memcmp(&mCurrentOffloadInfo, &offloadInfo, sizeof(offloadInfo)) == 0) {
1674                ALOGV("openAudioSink: no change in offload mode");
1675                // no change from previous configuration, everything ok.
1676                return OK;
1677            }
1678            mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1679
1680            ALOGV("openAudioSink: try to open AudioSink in offload mode");
1681            uint32_t offloadFlags = flags;
1682            offloadFlags |= AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1683            offloadFlags &= ~AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
1684            audioSinkChanged = true;
1685            mAudioSink->close();
1686
1687            err = mAudioSink->open(
1688                    sampleRate,
1689                    numChannels,
1690                    (audio_channel_mask_t)channelMask,
1691                    audioFormat,
1692                    0 /* bufferCount - unused */,
1693                    &NuPlayer::Renderer::AudioSinkCallback,
1694                    this,
1695                    (audio_output_flags_t)offloadFlags,
1696                    &offloadInfo);
1697
1698            if (err == OK) {
1699                err = mAudioSink->setPlaybackRate(mPlaybackSettings);
1700            }
1701
1702            if (err == OK) {
1703                // If the playback is offloaded to h/w, we pass
1704                // the HAL some metadata information.
1705                // We don't want to do this for PCM because it
1706                // will be going through the AudioFlinger mixer
1707                // before reaching the hardware.
1708                // TODO
1709                mCurrentOffloadInfo = offloadInfo;
1710                if (!mPaused) { // for preview mode, don't start if paused
1711                    err = mAudioSink->start();
1712                }
1713                ALOGV_IF(err == OK, "openAudioSink: offload succeeded");
1714            }
1715            if (err != OK) {
1716                // Clean up, fall back to non offload mode.
1717                mAudioSink->close();
1718                onDisableOffloadAudio();
1719                mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1720                ALOGV("openAudioSink: offload failed");
1721            } else {
1722                mUseAudioCallback = true;  // offload mode transfers data through callback
1723                ++mAudioDrainGeneration;  // discard pending kWhatDrainAudioQueue message.
1724            }
1725        }
1726    }
1727    if (!offloadOnly && !offloadingAudio()) {
1728        ALOGV("openAudioSink: open AudioSink in NON-offload mode");
1729        uint32_t pcmFlags = flags;
1730        pcmFlags &= ~AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1731
1732        const PcmInfo info = {
1733                (audio_channel_mask_t)channelMask,
1734                (audio_output_flags_t)pcmFlags,
1735                AUDIO_FORMAT_PCM_16_BIT, // TODO: change to audioFormat
1736                numChannels,
1737                sampleRate
1738        };
1739        if (memcmp(&mCurrentPcmInfo, &info, sizeof(info)) == 0) {
1740            ALOGV("openAudioSink: no change in pcm mode");
1741            // no change from previous configuration, everything ok.
1742            return OK;
1743        }
1744
1745        audioSinkChanged = true;
1746        mAudioSink->close();
1747        mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1748        // Note: It is possible to set up the callback, but not use it to send audio data.
1749        // This requires a fix in AudioSink to explicitly specify the transfer mode.
1750        mUseAudioCallback = getUseAudioCallbackSetting();
1751        if (mUseAudioCallback) {
1752            ++mAudioDrainGeneration;  // discard pending kWhatDrainAudioQueue message.
1753        }
1754
1755        // Compute the desired buffer size.
1756        // For callback mode, the amount of time before wakeup is about half the buffer size.
1757        const uint32_t frameCount =
1758                (unsigned long long)sampleRate * getAudioSinkPcmMsSetting() / 1000;
1759
1760        status_t err = mAudioSink->open(
1761                    sampleRate,
1762                    numChannels,
1763                    (audio_channel_mask_t)channelMask,
1764                    AUDIO_FORMAT_PCM_16_BIT,
1765                    0 /* bufferCount - unused */,
1766                    mUseAudioCallback ? &NuPlayer::Renderer::AudioSinkCallback : NULL,
1767                    mUseAudioCallback ? this : NULL,
1768                    (audio_output_flags_t)pcmFlags,
1769                    NULL,
1770                    true /* doNotReconnect */,
1771                    frameCount);
1772        if (err == OK) {
1773            err = mAudioSink->setPlaybackRate(mPlaybackSettings);
1774        }
1775        if (err != OK) {
1776            ALOGW("openAudioSink: non offloaded open failed status: %d", err);
1777            mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1778            return err;
1779        }
1780        mCurrentPcmInfo = info;
1781        if (!mPaused) { // for preview mode, don't start if paused
1782            mAudioSink->start();
1783        }
1784    }
1785    if (audioSinkChanged) {
1786        onAudioSinkChanged();
1787    }
1788    mAudioTornDown = false;
1789    return OK;
1790}
1791
1792void NuPlayer::Renderer::onCloseAudioSink() {
1793    mAudioSink->close();
1794    mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1795    mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1796}
1797
1798}  // namespace android
1799
1800