NuPlayerRenderer.cpp revision 3ab25457385dceb07205fc8ead86d7fb9e307588 
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            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
774bool NuPlayer::Renderer::onDrainAudioQueue() {
775    // TODO: This call to getPosition checks if AudioTrack has been created
776    // in AudioSink before draining audio. If AudioTrack doesn't exist, then
777    // CHECKs on getPosition will fail.
778    // We still need to figure out why AudioTrack is not created when
779    // this function is called. One possible reason could be leftover
780    // audio. Another possible place is to check whether decoder
781    // has received INFO_FORMAT_CHANGED as the first buffer since
782    // AudioSink is opened there, and possible interactions with flush
783    // immediately after start. Investigate error message
784    // "vorbis_dsp_synthesis returned -135", along with RTSP.
785    uint32_t numFramesPlayed;
786    if (mAudioSink->getPosition(&numFramesPlayed) != OK) {
787        return false;
788    }
789
790#if 0
791    ssize_t numFramesAvailableToWrite =
792        mAudioSink->frameCount() - (mNumFramesWritten - numFramesPlayed);
793
794    if (numFramesAvailableToWrite == mAudioSink->frameCount()) {
795        ALOGI("audio sink underrun");
796    } else {
797        ALOGV("audio queue has %d frames left to play",
798             mAudioSink->frameCount() - numFramesAvailableToWrite);
799    }
800#endif
801
802    uint32_t prevFramesWritten = mNumFramesWritten;
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                ALOGV("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    // calculate whether we need to reschedule another write.
902    bool reschedule = !mAudioQueue.empty()
903            && (!mPaused
904                || prevFramesWritten != mNumFramesWritten); // permit pause to fill buffers
905    //ALOGD("reschedule:%d  empty:%d  mPaused:%d  prevFramesWritten:%u  mNumFramesWritten:%u",
906    //        reschedule, mAudioQueue.empty(), mPaused, prevFramesWritten, mNumFramesWritten);
907    return reschedule;
908}
909
910int64_t NuPlayer::Renderer::getDurationUsIfPlayedAtSampleRate(uint32_t numFrames) {
911    int32_t sampleRate = offloadingAudio() ?
912            mCurrentOffloadInfo.sample_rate : mCurrentPcmInfo.mSampleRate;
913    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
914    return (int64_t)((int32_t)numFrames * 1000000LL / sampleRate);
915}
916
917// Calculate duration of pending samples if played at normal rate (i.e., 1.0).
918int64_t NuPlayer::Renderer::getPendingAudioPlayoutDurationUs(int64_t nowUs) {
919    int64_t writtenAudioDurationUs = getDurationUsIfPlayedAtSampleRate(mNumFramesWritten);
920    return writtenAudioDurationUs - getPlayedOutAudioDurationUs(nowUs);
921}
922
923int64_t NuPlayer::Renderer::getRealTimeUs(int64_t mediaTimeUs, int64_t nowUs) {
924    int64_t realUs;
925    if (mMediaClock->getRealTimeFor(mediaTimeUs, &realUs) != OK) {
926        // If failed to get current position, e.g. due to audio clock is
927        // not ready, then just play out video immediately without delay.
928        return nowUs;
929    }
930    return realUs;
931}
932
933void NuPlayer::Renderer::onNewAudioMediaTime(int64_t mediaTimeUs) {
934    Mutex::Autolock autoLock(mLock);
935    // TRICKY: vorbis decoder generates multiple frames with the same
936    // timestamp, so only update on the first frame with a given timestamp
937    if (mediaTimeUs == mAnchorTimeMediaUs) {
938        return;
939    }
940    setAudioFirstAnchorTimeIfNeeded_l(mediaTimeUs);
941    int64_t nowUs = ALooper::GetNowUs();
942    int64_t nowMediaUs = mediaTimeUs - getPendingAudioPlayoutDurationUs(nowUs);
943    mMediaClock->updateAnchor(nowMediaUs, nowUs, mediaTimeUs);
944    mAnchorNumFramesWritten = mNumFramesWritten;
945    mAnchorTimeMediaUs = mediaTimeUs;
946}
947
948// Called without mLock acquired.
949void NuPlayer::Renderer::postDrainVideoQueue() {
950    if (mDrainVideoQueuePending
951            || getSyncQueues()
952            || (mPaused && mVideoSampleReceived)) {
953        return;
954    }
955
956    if (mVideoQueue.empty()) {
957        return;
958    }
959
960    QueueEntry &entry = *mVideoQueue.begin();
961
962    sp<AMessage> msg = new AMessage(kWhatDrainVideoQueue, this);
963    msg->setInt32("drainGeneration", getDrainGeneration(false /* audio */));
964
965    if (entry.mBuffer == NULL) {
966        // EOS doesn't carry a timestamp.
967        msg->post();
968        mDrainVideoQueuePending = true;
969        return;
970    }
971
972    int64_t delayUs;
973    int64_t nowUs = ALooper::GetNowUs();
974    int64_t realTimeUs;
975    if (mFlags & FLAG_REAL_TIME) {
976        int64_t mediaTimeUs;
977        CHECK(entry.mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
978        realTimeUs = mediaTimeUs;
979    } else {
980        int64_t mediaTimeUs;
981        CHECK(entry.mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
982
983        {
984            Mutex::Autolock autoLock(mLock);
985            if (mAnchorTimeMediaUs < 0) {
986                mMediaClock->updateAnchor(mediaTimeUs, nowUs, mediaTimeUs);
987                mAnchorTimeMediaUs = mediaTimeUs;
988                realTimeUs = nowUs;
989            } else {
990                realTimeUs = getRealTimeUs(mediaTimeUs, nowUs);
991            }
992        }
993        if (!mHasAudio) {
994            // smooth out videos >= 10fps
995            mMediaClock->updateMaxTimeMedia(mediaTimeUs + 100000);
996        }
997
998        // Heuristics to handle situation when media time changed without a
999        // discontinuity. If we have not drained an audio buffer that was
1000        // received after this buffer, repost in 10 msec. Otherwise repost
1001        // in 500 msec.
1002        delayUs = realTimeUs - nowUs;
1003        if (delayUs > 500000) {
1004            int64_t postDelayUs = 500000;
1005            if (mHasAudio && (mLastAudioBufferDrained - entry.mBufferOrdinal) <= 0) {
1006                postDelayUs = 10000;
1007            }
1008            msg->setWhat(kWhatPostDrainVideoQueue);
1009            msg->post(postDelayUs);
1010            mVideoScheduler->restart();
1011            ALOGI("possible video time jump of %dms, retrying in %dms",
1012                    (int)(delayUs / 1000), (int)(postDelayUs / 1000));
1013            mDrainVideoQueuePending = true;
1014            return;
1015        }
1016    }
1017
1018    realTimeUs = mVideoScheduler->schedule(realTimeUs * 1000) / 1000;
1019    int64_t twoVsyncsUs = 2 * (mVideoScheduler->getVsyncPeriod() / 1000);
1020
1021    delayUs = realTimeUs - nowUs;
1022
1023    ALOGW_IF(delayUs > 500000, "unusually high delayUs: %" PRId64, delayUs);
1024    // post 2 display refreshes before rendering is due
1025    msg->post(delayUs > twoVsyncsUs ? delayUs - twoVsyncsUs : 0);
1026
1027    mDrainVideoQueuePending = true;
1028}
1029
1030void NuPlayer::Renderer::onDrainVideoQueue() {
1031    if (mVideoQueue.empty()) {
1032        return;
1033    }
1034
1035    QueueEntry *entry = &*mVideoQueue.begin();
1036
1037    if (entry->mBuffer == NULL) {
1038        // EOS
1039
1040        notifyEOS(false /* audio */, entry->mFinalResult);
1041
1042        mVideoQueue.erase(mVideoQueue.begin());
1043        entry = NULL;
1044
1045        setVideoLateByUs(0);
1046        return;
1047    }
1048
1049    int64_t nowUs = -1;
1050    int64_t realTimeUs;
1051    if (mFlags & FLAG_REAL_TIME) {
1052        CHECK(entry->mBuffer->meta()->findInt64("timeUs", &realTimeUs));
1053    } else {
1054        int64_t mediaTimeUs;
1055        CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
1056
1057        nowUs = ALooper::GetNowUs();
1058        realTimeUs = getRealTimeUs(mediaTimeUs, nowUs);
1059    }
1060
1061    bool tooLate = false;
1062
1063    if (!mPaused) {
1064        if (nowUs == -1) {
1065            nowUs = ALooper::GetNowUs();
1066        }
1067        setVideoLateByUs(nowUs - realTimeUs);
1068        tooLate = (mVideoLateByUs > 40000);
1069
1070        if (tooLate) {
1071            ALOGV("video late by %lld us (%.2f secs)",
1072                 (long long)mVideoLateByUs, mVideoLateByUs / 1E6);
1073        } else {
1074            int64_t mediaUs = 0;
1075            mMediaClock->getMediaTime(realTimeUs, &mediaUs);
1076            ALOGV("rendering video at media time %.2f secs",
1077                    (mFlags & FLAG_REAL_TIME ? realTimeUs :
1078                    mediaUs) / 1E6);
1079        }
1080    } else {
1081        setVideoLateByUs(0);
1082        if (!mVideoSampleReceived && !mHasAudio) {
1083            // This will ensure that the first frame after a flush won't be used as anchor
1084            // when renderer is in paused state, because resume can happen any time after seek.
1085            Mutex::Autolock autoLock(mLock);
1086            clearAnchorTime_l();
1087        }
1088    }
1089
1090    entry->mNotifyConsumed->setInt64("timestampNs", realTimeUs * 1000ll);
1091    entry->mNotifyConsumed->setInt32("render", !tooLate);
1092    entry->mNotifyConsumed->post();
1093    mVideoQueue.erase(mVideoQueue.begin());
1094    entry = NULL;
1095
1096    mVideoSampleReceived = true;
1097
1098    if (!mPaused) {
1099        if (!mVideoRenderingStarted) {
1100            mVideoRenderingStarted = true;
1101            notifyVideoRenderingStart();
1102        }
1103        Mutex::Autolock autoLock(mLock);
1104        notifyIfMediaRenderingStarted_l();
1105    }
1106}
1107
1108void NuPlayer::Renderer::notifyVideoRenderingStart() {
1109    sp<AMessage> notify = mNotify->dup();
1110    notify->setInt32("what", kWhatVideoRenderingStart);
1111    notify->post();
1112}
1113
1114void NuPlayer::Renderer::notifyEOS(bool audio, status_t finalResult, int64_t delayUs) {
1115    sp<AMessage> notify = mNotify->dup();
1116    notify->setInt32("what", kWhatEOS);
1117    notify->setInt32("audio", static_cast<int32_t>(audio));
1118    notify->setInt32("finalResult", finalResult);
1119    notify->post(delayUs);
1120}
1121
1122void NuPlayer::Renderer::notifyAudioTearDown() {
1123    (new AMessage(kWhatAudioTearDown, this))->post();
1124}
1125
1126void NuPlayer::Renderer::onQueueBuffer(const sp<AMessage> &msg) {
1127    int32_t audio;
1128    CHECK(msg->findInt32("audio", &audio));
1129
1130    if (dropBufferIfStale(audio, msg)) {
1131        return;
1132    }
1133
1134    if (audio) {
1135        mHasAudio = true;
1136    } else {
1137        mHasVideo = true;
1138    }
1139
1140    if (mHasVideo) {
1141        if (mVideoScheduler == NULL) {
1142            mVideoScheduler = new VideoFrameScheduler();
1143            mVideoScheduler->init();
1144        }
1145    }
1146
1147    sp<ABuffer> buffer;
1148    CHECK(msg->findBuffer("buffer", &buffer));
1149
1150    sp<AMessage> notifyConsumed;
1151    CHECK(msg->findMessage("notifyConsumed", &notifyConsumed));
1152
1153    QueueEntry entry;
1154    entry.mBuffer = buffer;
1155    entry.mNotifyConsumed = notifyConsumed;
1156    entry.mOffset = 0;
1157    entry.mFinalResult = OK;
1158    entry.mBufferOrdinal = ++mTotalBuffersQueued;
1159
1160    if (audio) {
1161        Mutex::Autolock autoLock(mLock);
1162        mAudioQueue.push_back(entry);
1163        postDrainAudioQueue_l();
1164    } else {
1165        mVideoQueue.push_back(entry);
1166        postDrainVideoQueue();
1167    }
1168
1169    Mutex::Autolock autoLock(mLock);
1170    if (!mSyncQueues || mAudioQueue.empty() || mVideoQueue.empty()) {
1171        return;
1172    }
1173
1174    sp<ABuffer> firstAudioBuffer = (*mAudioQueue.begin()).mBuffer;
1175    sp<ABuffer> firstVideoBuffer = (*mVideoQueue.begin()).mBuffer;
1176
1177    if (firstAudioBuffer == NULL || firstVideoBuffer == NULL) {
1178        // EOS signalled on either queue.
1179        syncQueuesDone_l();
1180        return;
1181    }
1182
1183    int64_t firstAudioTimeUs;
1184    int64_t firstVideoTimeUs;
1185    CHECK(firstAudioBuffer->meta()
1186            ->findInt64("timeUs", &firstAudioTimeUs));
1187    CHECK(firstVideoBuffer->meta()
1188            ->findInt64("timeUs", &firstVideoTimeUs));
1189
1190    int64_t diff = firstVideoTimeUs - firstAudioTimeUs;
1191
1192    ALOGV("queueDiff = %.2f secs", diff / 1E6);
1193
1194    if (diff > 100000ll) {
1195        // Audio data starts More than 0.1 secs before video.
1196        // Drop some audio.
1197
1198        (*mAudioQueue.begin()).mNotifyConsumed->post();
1199        mAudioQueue.erase(mAudioQueue.begin());
1200        return;
1201    }
1202
1203    syncQueuesDone_l();
1204}
1205
1206void NuPlayer::Renderer::syncQueuesDone_l() {
1207    if (!mSyncQueues) {
1208        return;
1209    }
1210
1211    mSyncQueues = false;
1212
1213    if (!mAudioQueue.empty()) {
1214        postDrainAudioQueue_l();
1215    }
1216
1217    if (!mVideoQueue.empty()) {
1218        mLock.unlock();
1219        postDrainVideoQueue();
1220        mLock.lock();
1221    }
1222}
1223
1224void NuPlayer::Renderer::onQueueEOS(const sp<AMessage> &msg) {
1225    int32_t audio;
1226    CHECK(msg->findInt32("audio", &audio));
1227
1228    if (dropBufferIfStale(audio, msg)) {
1229        return;
1230    }
1231
1232    int32_t finalResult;
1233    CHECK(msg->findInt32("finalResult", &finalResult));
1234
1235    QueueEntry entry;
1236    entry.mOffset = 0;
1237    entry.mFinalResult = finalResult;
1238
1239    if (audio) {
1240        Mutex::Autolock autoLock(mLock);
1241        if (mAudioQueue.empty() && mSyncQueues) {
1242            syncQueuesDone_l();
1243        }
1244        mAudioQueue.push_back(entry);
1245        postDrainAudioQueue_l();
1246    } else {
1247        if (mVideoQueue.empty() && getSyncQueues()) {
1248            Mutex::Autolock autoLock(mLock);
1249            syncQueuesDone_l();
1250        }
1251        mVideoQueue.push_back(entry);
1252        postDrainVideoQueue();
1253    }
1254}
1255
1256void NuPlayer::Renderer::onFlush(const sp<AMessage> &msg) {
1257    int32_t audio, notifyComplete;
1258    CHECK(msg->findInt32("audio", &audio));
1259
1260    {
1261        Mutex::Autolock autoLock(mLock);
1262        if (audio) {
1263            notifyComplete = mNotifyCompleteAudio;
1264            mNotifyCompleteAudio = false;
1265        } else {
1266            notifyComplete = mNotifyCompleteVideo;
1267            mNotifyCompleteVideo = false;
1268        }
1269
1270        // If we're currently syncing the queues, i.e. dropping audio while
1271        // aligning the first audio/video buffer times and only one of the
1272        // two queues has data, we may starve that queue by not requesting
1273        // more buffers from the decoder. If the other source then encounters
1274        // a discontinuity that leads to flushing, we'll never find the
1275        // corresponding discontinuity on the other queue.
1276        // Therefore we'll stop syncing the queues if at least one of them
1277        // is flushed.
1278        syncQueuesDone_l();
1279        clearAnchorTime_l();
1280    }
1281
1282    ALOGV("flushing %s", audio ? "audio" : "video");
1283    if (audio) {
1284        {
1285            Mutex::Autolock autoLock(mLock);
1286            flushQueue(&mAudioQueue);
1287
1288            ++mAudioDrainGeneration;
1289            prepareForMediaRenderingStart_l();
1290
1291            // the frame count will be reset after flush.
1292            clearAudioFirstAnchorTime_l();
1293        }
1294
1295        mDrainAudioQueuePending = false;
1296
1297        if (offloadingAudio()) {
1298            mAudioSink->pause();
1299            mAudioSink->flush();
1300            if (!mPaused) {
1301                mAudioSink->start();
1302            }
1303        } else {
1304            mAudioSink->pause();
1305            mAudioSink->flush();
1306            // Call stop() to signal to the AudioSink to completely fill the
1307            // internal buffer before resuming playback.
1308            mAudioSink->stop();
1309            if (!mPaused) {
1310                mAudioSink->start();
1311            }
1312            mNumFramesWritten = 0;
1313        }
1314    } else {
1315        flushQueue(&mVideoQueue);
1316
1317        mDrainVideoQueuePending = false;
1318
1319        if (mVideoScheduler != NULL) {
1320            mVideoScheduler->restart();
1321        }
1322
1323        Mutex::Autolock autoLock(mLock);
1324        ++mVideoDrainGeneration;
1325        prepareForMediaRenderingStart_l();
1326    }
1327
1328    mVideoSampleReceived = false;
1329
1330    if (notifyComplete) {
1331        notifyFlushComplete(audio);
1332    }
1333}
1334
1335void NuPlayer::Renderer::flushQueue(List<QueueEntry> *queue) {
1336    while (!queue->empty()) {
1337        QueueEntry *entry = &*queue->begin();
1338
1339        if (entry->mBuffer != NULL) {
1340            entry->mNotifyConsumed->post();
1341        }
1342
1343        queue->erase(queue->begin());
1344        entry = NULL;
1345    }
1346}
1347
1348void NuPlayer::Renderer::notifyFlushComplete(bool audio) {
1349    sp<AMessage> notify = mNotify->dup();
1350    notify->setInt32("what", kWhatFlushComplete);
1351    notify->setInt32("audio", static_cast<int32_t>(audio));
1352    notify->post();
1353}
1354
1355bool NuPlayer::Renderer::dropBufferIfStale(
1356        bool audio, const sp<AMessage> &msg) {
1357    int32_t queueGeneration;
1358    CHECK(msg->findInt32("queueGeneration", &queueGeneration));
1359
1360    if (queueGeneration == getQueueGeneration(audio)) {
1361        return false;
1362    }
1363
1364    sp<AMessage> notifyConsumed;
1365    if (msg->findMessage("notifyConsumed", &notifyConsumed)) {
1366        notifyConsumed->post();
1367    }
1368
1369    return true;
1370}
1371
1372void NuPlayer::Renderer::onAudioSinkChanged() {
1373    if (offloadingAudio()) {
1374        return;
1375    }
1376    CHECK(!mDrainAudioQueuePending);
1377    mNumFramesWritten = 0;
1378    {
1379        Mutex::Autolock autoLock(mLock);
1380        mAnchorNumFramesWritten = -1;
1381    }
1382    uint32_t written;
1383    if (mAudioSink->getFramesWritten(&written) == OK) {
1384        mNumFramesWritten = written;
1385    }
1386}
1387
1388void NuPlayer::Renderer::onDisableOffloadAudio() {
1389    Mutex::Autolock autoLock(mLock);
1390    mFlags &= ~FLAG_OFFLOAD_AUDIO;
1391    ++mAudioDrainGeneration;
1392}
1393
1394void NuPlayer::Renderer::onEnableOffloadAudio() {
1395    Mutex::Autolock autoLock(mLock);
1396    mFlags |= FLAG_OFFLOAD_AUDIO;
1397    ++mAudioDrainGeneration;
1398}
1399
1400void NuPlayer::Renderer::onPause() {
1401    if (mPaused) {
1402        return;
1403    }
1404
1405    {
1406        Mutex::Autolock autoLock(mLock);
1407        // we do not increment audio drain generation so that we fill audio buffer during pause.
1408        ++mVideoDrainGeneration;
1409        prepareForMediaRenderingStart_l();
1410        mPaused = true;
1411        mMediaClock->setPlaybackRate(0.0);
1412    }
1413
1414    mDrainAudioQueuePending = false;
1415    mDrainVideoQueuePending = false;
1416
1417    if (mHasAudio) {
1418        mAudioSink->pause();
1419        startAudioOffloadPauseTimeout();
1420    }
1421
1422    ALOGV("now paused audio queue has %zu entries, video has %zu entries",
1423          mAudioQueue.size(), mVideoQueue.size());
1424}
1425
1426void NuPlayer::Renderer::onResume() {
1427    if (!mPaused) {
1428        return;
1429    }
1430
1431    if (mHasAudio) {
1432        cancelAudioOffloadPauseTimeout();
1433        mAudioSink->start();
1434    }
1435
1436    {
1437        Mutex::Autolock autoLock(mLock);
1438        mPaused = false;
1439
1440        // configure audiosink as we did not do it when pausing
1441        if (mAudioSink != NULL && mAudioSink->ready()) {
1442            mAudioSink->setPlaybackRate(mPlaybackSettings);
1443        }
1444
1445        mMediaClock->setPlaybackRate(mPlaybackRate);
1446
1447        if (!mAudioQueue.empty()) {
1448            postDrainAudioQueue_l();
1449        }
1450    }
1451
1452    if (!mVideoQueue.empty()) {
1453        postDrainVideoQueue();
1454    }
1455}
1456
1457void NuPlayer::Renderer::onSetVideoFrameRate(float fps) {
1458    if (mVideoScheduler == NULL) {
1459        mVideoScheduler = new VideoFrameScheduler();
1460    }
1461    mVideoScheduler->init(fps);
1462}
1463
1464int32_t NuPlayer::Renderer::getQueueGeneration(bool audio) {
1465    Mutex::Autolock autoLock(mLock);
1466    return (audio ? mAudioQueueGeneration : mVideoQueueGeneration);
1467}
1468
1469int32_t NuPlayer::Renderer::getDrainGeneration(bool audio) {
1470    Mutex::Autolock autoLock(mLock);
1471    return (audio ? mAudioDrainGeneration : mVideoDrainGeneration);
1472}
1473
1474bool NuPlayer::Renderer::getSyncQueues() {
1475    Mutex::Autolock autoLock(mLock);
1476    return mSyncQueues;
1477}
1478
1479// TODO: Remove unnecessary calls to getPlayedOutAudioDurationUs()
1480// as it acquires locks and may query the audio driver.
1481//
1482// Some calls could conceivably retrieve extrapolated data instead of
1483// accessing getTimestamp() or getPosition() every time a data buffer with
1484// a media time is received.
1485//
1486// Calculate duration of played samples if played at normal rate (i.e., 1.0).
1487int64_t NuPlayer::Renderer::getPlayedOutAudioDurationUs(int64_t nowUs) {
1488    uint32_t numFramesPlayed;
1489    int64_t numFramesPlayedAt;
1490    AudioTimestamp ts;
1491    static const int64_t kStaleTimestamp100ms = 100000;
1492
1493    status_t res = mAudioSink->getTimestamp(ts);
1494    if (res == OK) {                 // case 1: mixing audio tracks and offloaded tracks.
1495        numFramesPlayed = ts.mPosition;
1496        numFramesPlayedAt =
1497            ts.mTime.tv_sec * 1000000LL + ts.mTime.tv_nsec / 1000;
1498        const int64_t timestampAge = nowUs - numFramesPlayedAt;
1499        if (timestampAge > kStaleTimestamp100ms) {
1500            // This is an audio FIXME.
1501            // getTimestamp returns a timestamp which may come from audio mixing threads.
1502            // After pausing, the MixerThread may go idle, thus the mTime estimate may
1503            // become stale. Assuming that the MixerThread runs 20ms, with FastMixer at 5ms,
1504            // the max latency should be about 25ms with an average around 12ms (to be verified).
1505            // For safety we use 100ms.
1506            ALOGV("getTimestamp: returned stale timestamp nowUs(%lld) numFramesPlayedAt(%lld)",
1507                    (long long)nowUs, (long long)numFramesPlayedAt);
1508            numFramesPlayedAt = nowUs - kStaleTimestamp100ms;
1509        }
1510        //ALOGD("getTimestamp: OK %d %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1511    } else if (res == WOULD_BLOCK) { // case 2: transitory state on start of a new track
1512        numFramesPlayed = 0;
1513        numFramesPlayedAt = nowUs;
1514        //ALOGD("getTimestamp: WOULD_BLOCK %d %lld",
1515        //        numFramesPlayed, (long long)numFramesPlayedAt);
1516    } else {                         // case 3: transitory at new track or audio fast tracks.
1517        res = mAudioSink->getPosition(&numFramesPlayed);
1518        CHECK_EQ(res, (status_t)OK);
1519        numFramesPlayedAt = nowUs;
1520        numFramesPlayedAt += 1000LL * mAudioSink->latency() / 2; /* XXX */
1521        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1522    }
1523
1524    //CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
1525    int64_t durationUs = getDurationUsIfPlayedAtSampleRate(numFramesPlayed)
1526            + nowUs - numFramesPlayedAt;
1527    if (durationUs < 0) {
1528        // Occurs when numFramesPlayed position is very small and the following:
1529        // (1) In case 1, the time nowUs is computed before getTimestamp() is called and
1530        //     numFramesPlayedAt is greater than nowUs by time more than numFramesPlayed.
1531        // (2) In case 3, using getPosition and adding mAudioSink->latency() to
1532        //     numFramesPlayedAt, by a time amount greater than numFramesPlayed.
1533        //
1534        // Both of these are transitory conditions.
1535        ALOGV("getPlayedOutAudioDurationUs: negative duration %lld set to zero", (long long)durationUs);
1536        durationUs = 0;
1537    }
1538    ALOGV("getPlayedOutAudioDurationUs(%lld) nowUs(%lld) frames(%u) framesAt(%lld)",
1539            (long long)durationUs, (long long)nowUs, numFramesPlayed, (long long)numFramesPlayedAt);
1540    return durationUs;
1541}
1542
1543void NuPlayer::Renderer::onAudioTearDown(AudioTearDownReason reason) {
1544    if (mAudioTornDown) {
1545        return;
1546    }
1547    mAudioTornDown = true;
1548
1549    int64_t currentPositionUs;
1550    if (getCurrentPosition(&currentPositionUs) != OK) {
1551        currentPositionUs = 0;
1552    }
1553
1554    mAudioSink->stop();
1555    mAudioSink->flush();
1556
1557    sp<AMessage> notify = mNotify->dup();
1558    notify->setInt32("what", kWhatAudioTearDown);
1559    notify->setInt64("positionUs", currentPositionUs);
1560    notify->setInt32("reason", reason);
1561    notify->post();
1562}
1563
1564void NuPlayer::Renderer::startAudioOffloadPauseTimeout() {
1565    if (offloadingAudio()) {
1566        mWakeLock->acquire();
1567        sp<AMessage> msg = new AMessage(kWhatAudioOffloadPauseTimeout, this);
1568        msg->setInt32("drainGeneration", mAudioOffloadPauseTimeoutGeneration);
1569        msg->post(kOffloadPauseMaxUs);
1570    }
1571}
1572
1573void NuPlayer::Renderer::cancelAudioOffloadPauseTimeout() {
1574    if (offloadingAudio()) {
1575        mWakeLock->release(true);
1576        ++mAudioOffloadPauseTimeoutGeneration;
1577    }
1578}
1579
1580status_t NuPlayer::Renderer::onOpenAudioSink(
1581        const sp<AMessage> &format,
1582        bool offloadOnly,
1583        bool hasVideo,
1584        uint32_t flags) {
1585    ALOGV("openAudioSink: offloadOnly(%d) offloadingAudio(%d)",
1586            offloadOnly, offloadingAudio());
1587    bool audioSinkChanged = false;
1588
1589    int32_t numChannels;
1590    CHECK(format->findInt32("channel-count", &numChannels));
1591
1592    int32_t channelMask;
1593    if (!format->findInt32("channel-mask", &channelMask)) {
1594        // signal to the AudioSink to derive the mask from count.
1595        channelMask = CHANNEL_MASK_USE_CHANNEL_ORDER;
1596    }
1597
1598    int32_t sampleRate;
1599    CHECK(format->findInt32("sample-rate", &sampleRate));
1600
1601    if (offloadingAudio()) {
1602        audio_format_t audioFormat = AUDIO_FORMAT_PCM_16_BIT;
1603        AString mime;
1604        CHECK(format->findString("mime", &mime));
1605        status_t err = mapMimeToAudioFormat(audioFormat, mime.c_str());
1606
1607        if (err != OK) {
1608            ALOGE("Couldn't map mime \"%s\" to a valid "
1609                    "audio_format", mime.c_str());
1610            onDisableOffloadAudio();
1611        } else {
1612            ALOGV("Mime \"%s\" mapped to audio_format 0x%x",
1613                    mime.c_str(), audioFormat);
1614
1615            int avgBitRate = -1;
1616            format->findInt32("bit-rate", &avgBitRate);
1617
1618            int32_t aacProfile = -1;
1619            if (audioFormat == AUDIO_FORMAT_AAC
1620                    && format->findInt32("aac-profile", &aacProfile)) {
1621                // Redefine AAC format as per aac profile
1622                mapAACProfileToAudioFormat(
1623                        audioFormat,
1624                        aacProfile);
1625            }
1626
1627            audio_offload_info_t offloadInfo = AUDIO_INFO_INITIALIZER;
1628            offloadInfo.duration_us = -1;
1629            format->findInt64(
1630                    "durationUs", &offloadInfo.duration_us);
1631            offloadInfo.sample_rate = sampleRate;
1632            offloadInfo.channel_mask = channelMask;
1633            offloadInfo.format = audioFormat;
1634            offloadInfo.stream_type = AUDIO_STREAM_MUSIC;
1635            offloadInfo.bit_rate = avgBitRate;
1636            offloadInfo.has_video = hasVideo;
1637            offloadInfo.is_streaming = true;
1638
1639            if (memcmp(&mCurrentOffloadInfo, &offloadInfo, sizeof(offloadInfo)) == 0) {
1640                ALOGV("openAudioSink: no change in offload mode");
1641                // no change from previous configuration, everything ok.
1642                return OK;
1643            }
1644            mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1645
1646            ALOGV("openAudioSink: try to open AudioSink in offload mode");
1647            uint32_t offloadFlags = flags;
1648            offloadFlags |= AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1649            offloadFlags &= ~AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
1650            audioSinkChanged = true;
1651            mAudioSink->close();
1652
1653            err = mAudioSink->open(
1654                    sampleRate,
1655                    numChannels,
1656                    (audio_channel_mask_t)channelMask,
1657                    audioFormat,
1658                    0 /* bufferCount - unused */,
1659                    &NuPlayer::Renderer::AudioSinkCallback,
1660                    this,
1661                    (audio_output_flags_t)offloadFlags,
1662                    &offloadInfo);
1663
1664            if (err == OK) {
1665                err = mAudioSink->setPlaybackRate(mPlaybackSettings);
1666            }
1667
1668            if (err == OK) {
1669                // If the playback is offloaded to h/w, we pass
1670                // the HAL some metadata information.
1671                // We don't want to do this for PCM because it
1672                // will be going through the AudioFlinger mixer
1673                // before reaching the hardware.
1674                // TODO
1675                mCurrentOffloadInfo = offloadInfo;
1676                if (!mPaused) { // for preview mode, don't start if paused
1677                    err = mAudioSink->start();
1678                }
1679                ALOGV_IF(err == OK, "openAudioSink: offload succeeded");
1680            }
1681            if (err != OK) {
1682                // Clean up, fall back to non offload mode.
1683                mAudioSink->close();
1684                onDisableOffloadAudio();
1685                mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1686                ALOGV("openAudioSink: offload failed");
1687            } else {
1688                mUseAudioCallback = true;  // offload mode transfers data through callback
1689                ++mAudioDrainGeneration;  // discard pending kWhatDrainAudioQueue message.
1690            }
1691        }
1692    }
1693    if (!offloadOnly && !offloadingAudio()) {
1694        ALOGV("openAudioSink: open AudioSink in NON-offload mode");
1695        uint32_t pcmFlags = flags;
1696        pcmFlags &= ~AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1697
1698        const PcmInfo info = {
1699                (audio_channel_mask_t)channelMask,
1700                (audio_output_flags_t)pcmFlags,
1701                AUDIO_FORMAT_PCM_16_BIT, // TODO: change to audioFormat
1702                numChannels,
1703                sampleRate
1704        };
1705        if (memcmp(&mCurrentPcmInfo, &info, sizeof(info)) == 0) {
1706            ALOGV("openAudioSink: no change in pcm mode");
1707            // no change from previous configuration, everything ok.
1708            return OK;
1709        }
1710
1711        audioSinkChanged = true;
1712        mAudioSink->close();
1713        mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1714        // Note: It is possible to set up the callback, but not use it to send audio data.
1715        // This requires a fix in AudioSink to explicitly specify the transfer mode.
1716        mUseAudioCallback = getUseAudioCallbackSetting();
1717        if (mUseAudioCallback) {
1718            ++mAudioDrainGeneration;  // discard pending kWhatDrainAudioQueue message.
1719        }
1720
1721        // Compute the desired buffer size.
1722        // For callback mode, the amount of time before wakeup is about half the buffer size.
1723        const uint32_t frameCount =
1724                (unsigned long long)sampleRate * getAudioSinkPcmMsSetting() / 1000;
1725
1726        status_t err = mAudioSink->open(
1727                    sampleRate,
1728                    numChannels,
1729                    (audio_channel_mask_t)channelMask,
1730                    AUDIO_FORMAT_PCM_16_BIT,
1731                    0 /* bufferCount - unused */,
1732                    mUseAudioCallback ? &NuPlayer::Renderer::AudioSinkCallback : NULL,
1733                    mUseAudioCallback ? this : NULL,
1734                    (audio_output_flags_t)pcmFlags,
1735                    NULL,
1736                    true /* doNotReconnect */,
1737                    frameCount);
1738        if (err == OK) {
1739            err = mAudioSink->setPlaybackRate(mPlaybackSettings);
1740        }
1741        if (err != OK) {
1742            ALOGW("openAudioSink: non offloaded open failed status: %d", err);
1743            mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1744            return err;
1745        }
1746        mCurrentPcmInfo = info;
1747        if (!mPaused) { // for preview mode, don't start if paused
1748            mAudioSink->start();
1749        }
1750    }
1751    if (audioSinkChanged) {
1752        onAudioSinkChanged();
1753    }
1754    mAudioTornDown = false;
1755    return OK;
1756}
1757
1758void NuPlayer::Renderer::onCloseAudioSink() {
1759    mAudioSink->close();
1760    mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1761    mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1762}
1763
1764}  // namespace android
1765
1766