NuPlayerRenderer.cpp revision d855a738735a3df8863b486f5d3b5e404cef15c1 
1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17//#define LOG_NDEBUG 0
18#define LOG_TAG "NuPlayerRenderer"
19#include <utils/Log.h>
20
21#include "NuPlayerRenderer.h"
22#include <cutils/properties.h>
23#include <media/stagefright/foundation/ABuffer.h>
24#include <media/stagefright/foundation/ADebug.h>
25#include <media/stagefright/foundation/AMessage.h>
26#include <media/stagefright/foundation/AUtils.h>
27#include <media/stagefright/foundation/AWakeLock.h>
28#include <media/stagefright/MediaClock.h>
29#include <media/stagefright/MediaErrors.h>
30#include <media/stagefright/MetaData.h>
31#include <media/stagefright/Utils.h>
32#include <media/stagefright/VideoFrameScheduler.h>
33
34#include <inttypes.h>
35
36namespace android {
37
38/*
39 * Example of common configuration settings in shell script form
40
41   #Turn offload audio off (use PCM for Play Music) -- AudioPolicyManager
42   adb shell setprop audio.offload.disable 1
43
44   #Allow offload audio with video (requires offloading to be enabled) -- AudioPolicyManager
45   adb shell setprop audio.offload.video 1
46
47   #Use audio callbacks for PCM data
48   adb shell setprop media.stagefright.audio.cbk 1
49
50   #Use deep buffer for PCM data with video (it is generally enabled for audio-only)
51   adb shell setprop media.stagefright.audio.deep 1
52
53   #Set size of buffers for pcm audio sink in msec (example: 1000 msec)
54   adb shell setprop media.stagefright.audio.sink 1000
55
56 * These configurations take effect for the next track played (not the current track).
57 */
58
59static inline bool getUseAudioCallbackSetting() {
60    return property_get_bool("media.stagefright.audio.cbk", false /* default_value */);
61}
62
63static inline int32_t getAudioSinkPcmMsSetting() {
64    return property_get_int32(
65            "media.stagefright.audio.sink", 500 /* default_value */);
66}
67
68// Maximum time in paused state when offloading audio decompression. When elapsed, the AudioSink
69// is closed to allow the audio DSP to power down.
70static const int64_t kOffloadPauseMaxUs = 10000000ll;
71
72// static
73const NuPlayer::Renderer::PcmInfo NuPlayer::Renderer::AUDIO_PCMINFO_INITIALIZER = {
74        AUDIO_CHANNEL_NONE,
75        AUDIO_OUTPUT_FLAG_NONE,
76        AUDIO_FORMAT_INVALID,
77        0, // mNumChannels
78        0 // mSampleRate
79};
80
81// static
82const int64_t NuPlayer::Renderer::kMinPositionUpdateDelayUs = 100000ll;
83
84NuPlayer::Renderer::Renderer(
85        const sp<MediaPlayerBase::AudioSink> &sink,
86        const sp<AMessage> &notify,
87        uint32_t flags)
88    : mAudioSink(sink),
89      mNotify(notify),
90      mFlags(flags),
91      mNumFramesWritten(0),
92      mDrainAudioQueuePending(false),
93      mDrainVideoQueuePending(false),
94      mAudioQueueGeneration(0),
95      mVideoQueueGeneration(0),
96      mAudioDrainGeneration(0),
97      mVideoDrainGeneration(0),
98      mAudioEOSGeneration(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      mPauseDrainAudioAllowedUs(0),
111      mVideoSampleReceived(false),
112      mVideoRenderingStarted(false),
113      mVideoRenderingStartGeneration(0),
114      mAudioRenderingStartGeneration(0),
115      mRenderingDataDelivered(false),
116      mLastAudioMediaTimeUs(-1),
117      mAudioOffloadPauseTimeoutGeneration(0),
118      mAudioTornDown(false),
119      mCurrentOffloadInfo(AUDIO_INFO_INITIALIZER),
120      mCurrentPcmInfo(AUDIO_PCMINFO_INITIALIZER),
121      mTotalBuffersQueued(0),
122      mLastAudioBufferDrained(0),
123      mUseAudioCallback(false),
124      mWakeLock(new AWakeLock()) {
125    mMediaClock = new MediaClock;
126    mPlaybackRate = mPlaybackSettings.mSpeed;
127    mMediaClock->setPlaybackRate(mPlaybackRate);
128}
129
130NuPlayer::Renderer::~Renderer() {
131    if (offloadingAudio()) {
132        mAudioSink->stop();
133        mAudioSink->flush();
134        mAudioSink->close();
135    }
136}
137
138void NuPlayer::Renderer::queueBuffer(
139        bool audio,
140        const sp<ABuffer> &buffer,
141        const sp<AMessage> &notifyConsumed) {
142    sp<AMessage> msg = new AMessage(kWhatQueueBuffer, this);
143    msg->setInt32("queueGeneration", getQueueGeneration(audio));
144    msg->setInt32("audio", static_cast<int32_t>(audio));
145    msg->setBuffer("buffer", buffer);
146    msg->setMessage("notifyConsumed", notifyConsumed);
147    msg->post();
148}
149
150void NuPlayer::Renderer::queueEOS(bool audio, status_t finalResult) {
151    CHECK_NE(finalResult, (status_t)OK);
152
153    sp<AMessage> msg = new AMessage(kWhatQueueEOS, this);
154    msg->setInt32("queueGeneration", getQueueGeneration(audio));
155    msg->setInt32("audio", static_cast<int32_t>(audio));
156    msg->setInt32("finalResult", finalResult);
157    msg->post();
158}
159
160status_t NuPlayer::Renderer::setPlaybackSettings(const AudioPlaybackRate &rate) {
161    sp<AMessage> msg = new AMessage(kWhatConfigPlayback, this);
162    writeToAMessage(msg, rate);
163    sp<AMessage> response;
164    status_t err = msg->postAndAwaitResponse(&response);
165    if (err == OK && response != NULL) {
166        CHECK(response->findInt32("err", &err));
167    }
168    return err;
169}
170
171status_t NuPlayer::Renderer::onConfigPlayback(const AudioPlaybackRate &rate /* sanitized */) {
172    if (rate.mSpeed == 0.f) {
173        onPause();
174        // don't call audiosink's setPlaybackRate if pausing, as pitch does not
175        // have to correspond to the any non-0 speed (e.g old speed). Keep
176        // settings nonetheless, using the old speed, in case audiosink changes.
177        AudioPlaybackRate newRate = rate;
178        newRate.mSpeed = mPlaybackSettings.mSpeed;
179        mPlaybackSettings = newRate;
180        return OK;
181    }
182
183    if (mAudioSink != NULL && mAudioSink->ready()) {
184        status_t err = mAudioSink->setPlaybackRate(rate);
185        if (err != OK) {
186            return err;
187        }
188    }
189    mPlaybackSettings = rate;
190    mPlaybackRate = rate.mSpeed;
191    mMediaClock->setPlaybackRate(mPlaybackRate);
192    return OK;
193}
194
195status_t NuPlayer::Renderer::getPlaybackSettings(AudioPlaybackRate *rate /* nonnull */) {
196    sp<AMessage> msg = new AMessage(kWhatGetPlaybackSettings, this);
197    sp<AMessage> response;
198    status_t err = msg->postAndAwaitResponse(&response);
199    if (err == OK && response != NULL) {
200        CHECK(response->findInt32("err", &err));
201        if (err == OK) {
202            readFromAMessage(response, rate);
203        }
204    }
205    return err;
206}
207
208status_t NuPlayer::Renderer::onGetPlaybackSettings(AudioPlaybackRate *rate /* nonnull */) {
209    if (mAudioSink != NULL && mAudioSink->ready()) {
210        status_t err = mAudioSink->getPlaybackRate(rate);
211        if (err == OK) {
212            if (!isAudioPlaybackRateEqual(*rate, mPlaybackSettings)) {
213                ALOGW("correcting mismatch in internal/external playback rate");
214            }
215            // get playback settings used by audiosink, as it may be
216            // slightly off due to audiosink not taking small changes.
217            mPlaybackSettings = *rate;
218            if (mPaused) {
219                rate->mSpeed = 0.f;
220            }
221        }
222        return err;
223    }
224    *rate = mPlaybackSettings;
225    return OK;
226}
227
228status_t NuPlayer::Renderer::setSyncSettings(const AVSyncSettings &sync, float videoFpsHint) {
229    sp<AMessage> msg = new AMessage(kWhatConfigSync, this);
230    writeToAMessage(msg, sync, videoFpsHint);
231    sp<AMessage> response;
232    status_t err = msg->postAndAwaitResponse(&response);
233    if (err == OK && response != NULL) {
234        CHECK(response->findInt32("err", &err));
235    }
236    return err;
237}
238
239status_t NuPlayer::Renderer::onConfigSync(const AVSyncSettings &sync, float videoFpsHint __unused) {
240    if (sync.mSource != AVSYNC_SOURCE_DEFAULT) {
241        return BAD_VALUE;
242    }
243    // TODO: support sync sources
244    return INVALID_OPERATION;
245}
246
247status_t NuPlayer::Renderer::getSyncSettings(AVSyncSettings *sync, float *videoFps) {
248    sp<AMessage> msg = new AMessage(kWhatGetSyncSettings, this);
249    sp<AMessage> response;
250    status_t err = msg->postAndAwaitResponse(&response);
251    if (err == OK && response != NULL) {
252        CHECK(response->findInt32("err", &err));
253        if (err == OK) {
254            readFromAMessage(response, sync, videoFps);
255        }
256    }
257    return err;
258}
259
260status_t NuPlayer::Renderer::onGetSyncSettings(
261        AVSyncSettings *sync /* nonnull */, float *videoFps /* nonnull */) {
262    *sync = mSyncSettings;
263    *videoFps = -1.f;
264    return OK;
265}
266
267void NuPlayer::Renderer::flush(bool audio, bool notifyComplete) {
268    {
269        Mutex::Autolock autoLock(mLock);
270        if (audio) {
271            mNotifyCompleteAudio |= notifyComplete;
272            clearAudioFirstAnchorTime_l();
273            ++mAudioQueueGeneration;
274            ++mAudioDrainGeneration;
275        } else {
276            mNotifyCompleteVideo |= notifyComplete;
277            ++mVideoQueueGeneration;
278            ++mVideoDrainGeneration;
279        }
280
281        clearAnchorTime_l();
282        mVideoLateByUs = 0;
283        mSyncQueues = false;
284    }
285
286    sp<AMessage> msg = new AMessage(kWhatFlush, this);
287    msg->setInt32("audio", static_cast<int32_t>(audio));
288    msg->post();
289}
290
291void NuPlayer::Renderer::signalTimeDiscontinuity() {
292}
293
294void NuPlayer::Renderer::signalDisableOffloadAudio() {
295    (new AMessage(kWhatDisableOffloadAudio, this))->post();
296}
297
298void NuPlayer::Renderer::signalEnableOffloadAudio() {
299    (new AMessage(kWhatEnableOffloadAudio, this))->post();
300}
301
302void NuPlayer::Renderer::pause() {
303    (new AMessage(kWhatPause, this))->post();
304}
305
306void NuPlayer::Renderer::resume() {
307    (new AMessage(kWhatResume, this))->post();
308}
309
310void NuPlayer::Renderer::setVideoFrameRate(float fps) {
311    sp<AMessage> msg = new AMessage(kWhatSetVideoFrameRate, this);
312    msg->setFloat("frame-rate", fps);
313    msg->post();
314}
315
316// Called on any threads without mLock acquired.
317status_t NuPlayer::Renderer::getCurrentPosition(int64_t *mediaUs) {
318    status_t result = mMediaClock->getMediaTime(ALooper::GetNowUs(), mediaUs);
319    if (result == OK) {
320        return result;
321    }
322
323    // MediaClock has not started yet. Try to start it if possible.
324    {
325        Mutex::Autolock autoLock(mLock);
326        if (mAudioFirstAnchorTimeMediaUs == -1) {
327            return result;
328        }
329
330        AudioTimestamp ts;
331        status_t res = mAudioSink->getTimestamp(ts);
332        if (res != OK) {
333            return result;
334        }
335
336        // AudioSink has rendered some frames.
337        int64_t nowUs = ALooper::GetNowUs();
338        int64_t nowMediaUs = mAudioSink->getPlayedOutDurationUs(nowUs)
339                + mAudioFirstAnchorTimeMediaUs;
340        mMediaClock->updateAnchor(nowMediaUs, nowUs, -1);
341    }
342
343    return mMediaClock->getMediaTime(ALooper::GetNowUs(), mediaUs);
344}
345
346void NuPlayer::Renderer::clearAudioFirstAnchorTime_l() {
347    mAudioFirstAnchorTimeMediaUs = -1;
348    mMediaClock->setStartingTimeMedia(-1);
349}
350
351void NuPlayer::Renderer::setAudioFirstAnchorTimeIfNeeded_l(int64_t mediaUs) {
352    if (mAudioFirstAnchorTimeMediaUs == -1) {
353        mAudioFirstAnchorTimeMediaUs = mediaUs;
354        mMediaClock->setStartingTimeMedia(mediaUs);
355    }
356}
357
358void NuPlayer::Renderer::clearAnchorTime_l() {
359    mMediaClock->clearAnchor();
360    mAnchorTimeMediaUs = -1;
361    mAnchorNumFramesWritten = -1;
362}
363
364void NuPlayer::Renderer::setVideoLateByUs(int64_t lateUs) {
365    Mutex::Autolock autoLock(mLock);
366    mVideoLateByUs = lateUs;
367}
368
369int64_t NuPlayer::Renderer::getVideoLateByUs() {
370    Mutex::Autolock autoLock(mLock);
371    return mVideoLateByUs;
372}
373
374status_t NuPlayer::Renderer::openAudioSink(
375        const sp<AMessage> &format,
376        bool offloadOnly,
377        bool hasVideo,
378        uint32_t flags,
379        bool *isOffloaded) {
380    sp<AMessage> msg = new AMessage(kWhatOpenAudioSink, this);
381    msg->setMessage("format", format);
382    msg->setInt32("offload-only", offloadOnly);
383    msg->setInt32("has-video", hasVideo);
384    msg->setInt32("flags", flags);
385
386    sp<AMessage> response;
387    msg->postAndAwaitResponse(&response);
388
389    int32_t err;
390    if (!response->findInt32("err", &err)) {
391        err = INVALID_OPERATION;
392    } else if (err == OK && isOffloaded != NULL) {
393        int32_t offload;
394        CHECK(response->findInt32("offload", &offload));
395        *isOffloaded = (offload != 0);
396    }
397    return err;
398}
399
400void NuPlayer::Renderer::closeAudioSink() {
401    sp<AMessage> msg = new AMessage(kWhatCloseAudioSink, this);
402
403    sp<AMessage> response;
404    msg->postAndAwaitResponse(&response);
405}
406
407void NuPlayer::Renderer::onMessageReceived(const sp<AMessage> &msg) {
408    switch (msg->what()) {
409        case kWhatOpenAudioSink:
410        {
411            sp<AMessage> format;
412            CHECK(msg->findMessage("format", &format));
413
414            int32_t offloadOnly;
415            CHECK(msg->findInt32("offload-only", &offloadOnly));
416
417            int32_t hasVideo;
418            CHECK(msg->findInt32("has-video", &hasVideo));
419
420            uint32_t flags;
421            CHECK(msg->findInt32("flags", (int32_t *)&flags));
422
423            status_t err = onOpenAudioSink(format, offloadOnly, hasVideo, flags);
424
425            sp<AMessage> response = new AMessage;
426            response->setInt32("err", err);
427            response->setInt32("offload", offloadingAudio());
428
429            sp<AReplyToken> replyID;
430            CHECK(msg->senderAwaitsResponse(&replyID));
431            response->postReply(replyID);
432
433            break;
434        }
435
436        case kWhatCloseAudioSink:
437        {
438            sp<AReplyToken> replyID;
439            CHECK(msg->senderAwaitsResponse(&replyID));
440
441            onCloseAudioSink();
442
443            sp<AMessage> response = new AMessage;
444            response->postReply(replyID);
445            break;
446        }
447
448        case kWhatStopAudioSink:
449        {
450            mAudioSink->stop();
451            break;
452        }
453
454        case kWhatDrainAudioQueue:
455        {
456            mDrainAudioQueuePending = false;
457
458            int32_t generation;
459            CHECK(msg->findInt32("drainGeneration", &generation));
460            if (generation != getDrainGeneration(true /* audio */)) {
461                break;
462            }
463
464            if (onDrainAudioQueue()) {
465                uint32_t numFramesPlayed;
466                CHECK_EQ(mAudioSink->getPosition(&numFramesPlayed),
467                         (status_t)OK);
468
469                uint32_t numFramesPendingPlayout =
470                    mNumFramesWritten - numFramesPlayed;
471
472                // This is how long the audio sink will have data to
473                // play back.
474                int64_t delayUs =
475                    mAudioSink->msecsPerFrame()
476                        * numFramesPendingPlayout * 1000ll;
477                if (mPlaybackRate > 1.0f) {
478                    delayUs /= mPlaybackRate;
479                }
480
481                // Let's give it more data after about half that time
482                // has elapsed.
483                Mutex::Autolock autoLock(mLock);
484                postDrainAudioQueue_l(delayUs / 2);
485            }
486            break;
487        }
488
489        case kWhatDrainVideoQueue:
490        {
491            int32_t generation;
492            CHECK(msg->findInt32("drainGeneration", &generation));
493            if (generation != getDrainGeneration(false /* audio */)) {
494                break;
495            }
496
497            mDrainVideoQueuePending = false;
498
499            onDrainVideoQueue();
500
501            postDrainVideoQueue();
502            break;
503        }
504
505        case kWhatPostDrainVideoQueue:
506        {
507            int32_t generation;
508            CHECK(msg->findInt32("drainGeneration", &generation));
509            if (generation != getDrainGeneration(false /* audio */)) {
510                break;
511            }
512
513            mDrainVideoQueuePending = false;
514            postDrainVideoQueue();
515            break;
516        }
517
518        case kWhatQueueBuffer:
519        {
520            onQueueBuffer(msg);
521            break;
522        }
523
524        case kWhatQueueEOS:
525        {
526            onQueueEOS(msg);
527            break;
528        }
529
530        case kWhatEOS:
531        {
532            int32_t generation;
533            CHECK(msg->findInt32("audioEOSGeneration", &generation));
534            if (generation != mAudioEOSGeneration) {
535                break;
536            }
537            status_t finalResult;
538            CHECK(msg->findInt32("finalResult", &finalResult));
539            notifyEOS(true /* audio */, finalResult);
540            break;
541        }
542
543        case kWhatConfigPlayback:
544        {
545            sp<AReplyToken> replyID;
546            CHECK(msg->senderAwaitsResponse(&replyID));
547            AudioPlaybackRate rate;
548            readFromAMessage(msg, &rate);
549            status_t err = onConfigPlayback(rate);
550            sp<AMessage> response = new AMessage;
551            response->setInt32("err", err);
552            response->postReply(replyID);
553            break;
554        }
555
556        case kWhatGetPlaybackSettings:
557        {
558            sp<AReplyToken> replyID;
559            CHECK(msg->senderAwaitsResponse(&replyID));
560            AudioPlaybackRate rate = AUDIO_PLAYBACK_RATE_DEFAULT;
561            status_t err = onGetPlaybackSettings(&rate);
562            sp<AMessage> response = new AMessage;
563            if (err == OK) {
564                writeToAMessage(response, rate);
565            }
566            response->setInt32("err", err);
567            response->postReply(replyID);
568            break;
569        }
570
571        case kWhatConfigSync:
572        {
573            sp<AReplyToken> replyID;
574            CHECK(msg->senderAwaitsResponse(&replyID));
575            AVSyncSettings sync;
576            float videoFpsHint;
577            readFromAMessage(msg, &sync, &videoFpsHint);
578            status_t err = onConfigSync(sync, videoFpsHint);
579            sp<AMessage> response = new AMessage;
580            response->setInt32("err", err);
581            response->postReply(replyID);
582            break;
583        }
584
585        case kWhatGetSyncSettings:
586        {
587            sp<AReplyToken> replyID;
588            CHECK(msg->senderAwaitsResponse(&replyID));
589
590            ALOGV("kWhatGetSyncSettings");
591            AVSyncSettings sync;
592            float videoFps = -1.f;
593            status_t err = onGetSyncSettings(&sync, &videoFps);
594            sp<AMessage> response = new AMessage;
595            if (err == OK) {
596                writeToAMessage(response, sync, videoFps);
597            }
598            response->setInt32("err", err);
599            response->postReply(replyID);
600            break;
601        }
602
603        case kWhatFlush:
604        {
605            onFlush(msg);
606            break;
607        }
608
609        case kWhatDisableOffloadAudio:
610        {
611            onDisableOffloadAudio();
612            break;
613        }
614
615        case kWhatEnableOffloadAudio:
616        {
617            onEnableOffloadAudio();
618            break;
619        }
620
621        case kWhatPause:
622        {
623            onPause();
624            break;
625        }
626
627        case kWhatResume:
628        {
629            onResume();
630            break;
631        }
632
633        case kWhatSetVideoFrameRate:
634        {
635            float fps;
636            CHECK(msg->findFloat("frame-rate", &fps));
637            onSetVideoFrameRate(fps);
638            break;
639        }
640
641        case kWhatAudioTearDown:
642        {
643            onAudioTearDown(kDueToError);
644            break;
645        }
646
647        case kWhatAudioOffloadPauseTimeout:
648        {
649            int32_t generation;
650            CHECK(msg->findInt32("drainGeneration", &generation));
651            if (generation != mAudioOffloadPauseTimeoutGeneration) {
652                break;
653            }
654            ALOGV("Audio Offload tear down due to pause timeout.");
655            onAudioTearDown(kDueToTimeout);
656            mWakeLock->release();
657            break;
658        }
659
660        default:
661            TRESPASS();
662            break;
663    }
664}
665
666void NuPlayer::Renderer::postDrainAudioQueue_l(int64_t delayUs) {
667    if (mDrainAudioQueuePending || mSyncQueues || mUseAudioCallback) {
668        return;
669    }
670
671    if (mAudioQueue.empty()) {
672        return;
673    }
674
675    // FIXME: if paused, wait until AudioTrack stop() is complete before delivering data.
676    if (mPaused) {
677        const int64_t diffUs = mPauseDrainAudioAllowedUs - ALooper::GetNowUs();
678        if (diffUs > delayUs) {
679            delayUs = diffUs;
680        }
681    }
682
683    mDrainAudioQueuePending = true;
684    sp<AMessage> msg = new AMessage(kWhatDrainAudioQueue, this);
685    msg->setInt32("drainGeneration", mAudioDrainGeneration);
686    msg->post(delayUs);
687}
688
689void NuPlayer::Renderer::prepareForMediaRenderingStart_l() {
690    mAudioRenderingStartGeneration = mAudioDrainGeneration;
691    mVideoRenderingStartGeneration = mVideoDrainGeneration;
692    mRenderingDataDelivered = false;
693}
694
695void NuPlayer::Renderer::notifyIfMediaRenderingStarted_l() {
696    if (mVideoRenderingStartGeneration == mVideoDrainGeneration &&
697        mAudioRenderingStartGeneration == mAudioDrainGeneration) {
698        mRenderingDataDelivered = true;
699        if (mPaused) {
700            return;
701        }
702        mVideoRenderingStartGeneration = -1;
703        mAudioRenderingStartGeneration = -1;
704
705        sp<AMessage> notify = mNotify->dup();
706        notify->setInt32("what", kWhatMediaRenderingStart);
707        notify->post();
708    }
709}
710
711// static
712size_t NuPlayer::Renderer::AudioSinkCallback(
713        MediaPlayerBase::AudioSink * /* audioSink */,
714        void *buffer,
715        size_t size,
716        void *cookie,
717        MediaPlayerBase::AudioSink::cb_event_t event) {
718    NuPlayer::Renderer *me = (NuPlayer::Renderer *)cookie;
719
720    switch (event) {
721        case MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER:
722        {
723            return me->fillAudioBuffer(buffer, size);
724            break;
725        }
726
727        case MediaPlayerBase::AudioSink::CB_EVENT_STREAM_END:
728        {
729            ALOGV("AudioSink::CB_EVENT_STREAM_END");
730            me->notifyEOS(true /* audio */, ERROR_END_OF_STREAM);
731            break;
732        }
733
734        case MediaPlayerBase::AudioSink::CB_EVENT_TEAR_DOWN:
735        {
736            ALOGV("AudioSink::CB_EVENT_TEAR_DOWN");
737            me->notifyAudioTearDown();
738            break;
739        }
740    }
741
742    return 0;
743}
744
745size_t NuPlayer::Renderer::fillAudioBuffer(void *buffer, size_t size) {
746    Mutex::Autolock autoLock(mLock);
747
748    if (!mUseAudioCallback) {
749        return 0;
750    }
751
752    bool hasEOS = false;
753
754    size_t sizeCopied = 0;
755    bool firstEntry = true;
756    QueueEntry *entry;  // will be valid after while loop if hasEOS is set.
757    while (sizeCopied < size && !mAudioQueue.empty()) {
758        entry = &*mAudioQueue.begin();
759
760        if (entry->mBuffer == NULL) { // EOS
761            hasEOS = true;
762            mAudioQueue.erase(mAudioQueue.begin());
763            break;
764        }
765
766        if (firstEntry && entry->mOffset == 0) {
767            firstEntry = false;
768            int64_t mediaTimeUs;
769            CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
770            ALOGV("fillAudioBuffer: rendering audio at media time %.2f secs", mediaTimeUs / 1E6);
771            setAudioFirstAnchorTimeIfNeeded_l(mediaTimeUs);
772        }
773
774        size_t copy = entry->mBuffer->size() - entry->mOffset;
775        size_t sizeRemaining = size - sizeCopied;
776        if (copy > sizeRemaining) {
777            copy = sizeRemaining;
778        }
779
780        memcpy((char *)buffer + sizeCopied,
781               entry->mBuffer->data() + entry->mOffset,
782               copy);
783
784        entry->mOffset += copy;
785        if (entry->mOffset == entry->mBuffer->size()) {
786            entry->mNotifyConsumed->post();
787            mAudioQueue.erase(mAudioQueue.begin());
788            entry = NULL;
789        }
790        sizeCopied += copy;
791
792        notifyIfMediaRenderingStarted_l();
793    }
794
795    if (mAudioFirstAnchorTimeMediaUs >= 0) {
796        int64_t nowUs = ALooper::GetNowUs();
797        int64_t nowMediaUs =
798            mAudioFirstAnchorTimeMediaUs + mAudioSink->getPlayedOutDurationUs(nowUs);
799        // we don't know how much data we are queueing for offloaded tracks.
800        mMediaClock->updateAnchor(nowMediaUs, nowUs, INT64_MAX);
801    }
802
803    // for non-offloaded audio, we need to compute the frames written because
804    // there is no EVENT_STREAM_END notification. The frames written gives
805    // an estimate on the pending played out duration.
806    if (!offloadingAudio()) {
807        mNumFramesWritten += sizeCopied / mAudioSink->frameSize();
808    }
809
810    if (hasEOS) {
811        (new AMessage(kWhatStopAudioSink, this))->post();
812        // As there is currently no EVENT_STREAM_END callback notification for
813        // non-offloaded audio tracks, we need to post the EOS ourselves.
814        if (!offloadingAudio()) {
815            int64_t postEOSDelayUs = 0;
816            if (mAudioSink->needsTrailingPadding()) {
817                postEOSDelayUs = getPendingAudioPlayoutDurationUs(ALooper::GetNowUs());
818            }
819            ALOGV("fillAudioBuffer: notifyEOS "
820                    "mNumFramesWritten:%u  finalResult:%d  postEOSDelay:%lld",
821                    mNumFramesWritten, entry->mFinalResult, (long long)postEOSDelayUs);
822            notifyEOS(true /* audio */, entry->mFinalResult, postEOSDelayUs);
823        }
824    }
825    return sizeCopied;
826}
827
828void NuPlayer::Renderer::drainAudioQueueUntilLastEOS() {
829    List<QueueEntry>::iterator it = mAudioQueue.begin(), itEOS = it;
830    bool foundEOS = false;
831    while (it != mAudioQueue.end()) {
832        int32_t eos;
833        QueueEntry *entry = &*it++;
834        if (entry->mBuffer == NULL
835                || (entry->mNotifyConsumed->findInt32("eos", &eos) && eos != 0)) {
836            itEOS = it;
837            foundEOS = true;
838        }
839    }
840
841    if (foundEOS) {
842        // post all replies before EOS and drop the samples
843        for (it = mAudioQueue.begin(); it != itEOS; it++) {
844            if (it->mBuffer == NULL) {
845                // delay doesn't matter as we don't even have an AudioTrack
846                notifyEOS(true /* audio */, it->mFinalResult);
847            } else {
848                it->mNotifyConsumed->post();
849            }
850        }
851        mAudioQueue.erase(mAudioQueue.begin(), itEOS);
852    }
853}
854
855bool NuPlayer::Renderer::onDrainAudioQueue() {
856    // do not drain audio during teardown as queued buffers may be invalid.
857    if (mAudioTornDown) {
858        return false;
859    }
860    // TODO: This call to getPosition checks if AudioTrack has been created
861    // in AudioSink before draining audio. If AudioTrack doesn't exist, then
862    // CHECKs on getPosition will fail.
863    // We still need to figure out why AudioTrack is not created when
864    // this function is called. One possible reason could be leftover
865    // audio. Another possible place is to check whether decoder
866    // has received INFO_FORMAT_CHANGED as the first buffer since
867    // AudioSink is opened there, and possible interactions with flush
868    // immediately after start. Investigate error message
869    // "vorbis_dsp_synthesis returned -135", along with RTSP.
870    uint32_t numFramesPlayed;
871    if (mAudioSink->getPosition(&numFramesPlayed) != OK) {
872        // When getPosition fails, renderer will not reschedule the draining
873        // unless new samples are queued.
874        // If we have pending EOS (or "eos" marker for discontinuities), we need
875        // to post these now as NuPlayerDecoder might be waiting for it.
876        drainAudioQueueUntilLastEOS();
877
878        ALOGW("onDrainAudioQueue(): audio sink is not ready");
879        return false;
880    }
881
882#if 0
883    ssize_t numFramesAvailableToWrite =
884        mAudioSink->frameCount() - (mNumFramesWritten - numFramesPlayed);
885
886    if (numFramesAvailableToWrite == mAudioSink->frameCount()) {
887        ALOGI("audio sink underrun");
888    } else {
889        ALOGV("audio queue has %d frames left to play",
890             mAudioSink->frameCount() - numFramesAvailableToWrite);
891    }
892#endif
893
894    uint32_t prevFramesWritten = mNumFramesWritten;
895    while (!mAudioQueue.empty()) {
896        QueueEntry *entry = &*mAudioQueue.begin();
897
898        mLastAudioBufferDrained = entry->mBufferOrdinal;
899
900        if (entry->mBuffer == NULL) {
901            // EOS
902            int64_t postEOSDelayUs = 0;
903            if (mAudioSink->needsTrailingPadding()) {
904                postEOSDelayUs = getPendingAudioPlayoutDurationUs(ALooper::GetNowUs());
905            }
906            notifyEOS(true /* audio */, entry->mFinalResult, postEOSDelayUs);
907            mLastAudioMediaTimeUs = getDurationUsIfPlayedAtSampleRate(mNumFramesWritten);
908
909            mAudioQueue.erase(mAudioQueue.begin());
910            entry = NULL;
911            if (mAudioSink->needsTrailingPadding()) {
912                // If we're not in gapless playback (i.e. through setNextPlayer), we
913                // need to stop the track here, because that will play out the last
914                // little bit at the end of the file. Otherwise short files won't play.
915                mAudioSink->stop();
916                mNumFramesWritten = 0;
917            }
918            return false;
919        }
920
921        // ignore 0-sized buffer which could be EOS marker with no data
922        if (entry->mOffset == 0 && entry->mBuffer->size() > 0) {
923            int64_t mediaTimeUs;
924            CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
925            ALOGV("onDrainAudioQueue: rendering audio at media time %.2f secs",
926                    mediaTimeUs / 1E6);
927            onNewAudioMediaTime(mediaTimeUs);
928        }
929
930        size_t copy = entry->mBuffer->size() - entry->mOffset;
931
932        ssize_t written = mAudioSink->write(entry->mBuffer->data() + entry->mOffset,
933                                            copy, false /* blocking */);
934        if (written < 0) {
935            // An error in AudioSink write. Perhaps the AudioSink was not properly opened.
936            if (written == WOULD_BLOCK) {
937                ALOGV("AudioSink write would block when writing %zu bytes", copy);
938            } else {
939                ALOGE("AudioSink write error(%zd) when writing %zu bytes", written, copy);
940                // This can only happen when AudioSink was opened with doNotReconnect flag set to
941                // true, in which case the NuPlayer will handle the reconnect.
942                notifyAudioTearDown();
943            }
944            break;
945        }
946
947        entry->mOffset += written;
948        if (entry->mOffset == entry->mBuffer->size()) {
949            entry->mNotifyConsumed->post();
950            mAudioQueue.erase(mAudioQueue.begin());
951
952            entry = NULL;
953        }
954
955        size_t copiedFrames = written / mAudioSink->frameSize();
956        mNumFramesWritten += copiedFrames;
957
958        {
959            Mutex::Autolock autoLock(mLock);
960            int64_t maxTimeMedia;
961            maxTimeMedia =
962                mAnchorTimeMediaUs +
963                        (int64_t)(max((long long)mNumFramesWritten - mAnchorNumFramesWritten, 0LL)
964                                * 1000LL * mAudioSink->msecsPerFrame());
965            mMediaClock->updateMaxTimeMedia(maxTimeMedia);
966
967            notifyIfMediaRenderingStarted_l();
968        }
969
970        if (written != (ssize_t)copy) {
971            // A short count was received from AudioSink::write()
972            //
973            // AudioSink write is called in non-blocking mode.
974            // It may return with a short count when:
975            //
976            // 1) Size to be copied is not a multiple of the frame size. We consider this fatal.
977            // 2) The data to be copied exceeds the available buffer in AudioSink.
978            // 3) An error occurs and data has been partially copied to the buffer in AudioSink.
979            // 4) AudioSink is an AudioCache for data retrieval, and the AudioCache is exceeded.
980
981            // (Case 1)
982            // Must be a multiple of the frame size.  If it is not a multiple of a frame size, it
983            // needs to fail, as we should not carry over fractional frames between calls.
984            CHECK_EQ(copy % mAudioSink->frameSize(), 0);
985
986            // (Case 2, 3, 4)
987            // Return early to the caller.
988            // Beware of calling immediately again as this may busy-loop if you are not careful.
989            ALOGV("AudioSink write short frame count %zd < %zu", written, copy);
990            break;
991        }
992    }
993
994    // calculate whether we need to reschedule another write.
995    bool reschedule = !mAudioQueue.empty()
996            && (!mPaused
997                || prevFramesWritten != mNumFramesWritten); // permit pause to fill buffers
998    //ALOGD("reschedule:%d  empty:%d  mPaused:%d  prevFramesWritten:%u  mNumFramesWritten:%u",
999    //        reschedule, mAudioQueue.empty(), mPaused, prevFramesWritten, mNumFramesWritten);
1000    return reschedule;
1001}
1002
1003int64_t NuPlayer::Renderer::getDurationUsIfPlayedAtSampleRate(uint32_t numFrames) {
1004    int32_t sampleRate = offloadingAudio() ?
1005            mCurrentOffloadInfo.sample_rate : mCurrentPcmInfo.mSampleRate;
1006    if (sampleRate == 0) {
1007        ALOGE("sampleRate is 0 in %s mode", offloadingAudio() ? "offload" : "non-offload");
1008        return 0;
1009    }
1010    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
1011    return (int64_t)((int32_t)numFrames * 1000000LL / sampleRate);
1012}
1013
1014// Calculate duration of pending samples if played at normal rate (i.e., 1.0).
1015int64_t NuPlayer::Renderer::getPendingAudioPlayoutDurationUs(int64_t nowUs) {
1016    int64_t writtenAudioDurationUs = getDurationUsIfPlayedAtSampleRate(mNumFramesWritten);
1017    return writtenAudioDurationUs - mAudioSink->getPlayedOutDurationUs(nowUs);
1018}
1019
1020int64_t NuPlayer::Renderer::getRealTimeUs(int64_t mediaTimeUs, int64_t nowUs) {
1021    int64_t realUs;
1022    if (mMediaClock->getRealTimeFor(mediaTimeUs, &realUs) != OK) {
1023        // If failed to get current position, e.g. due to audio clock is
1024        // not ready, then just play out video immediately without delay.
1025        return nowUs;
1026    }
1027    return realUs;
1028}
1029
1030void NuPlayer::Renderer::onNewAudioMediaTime(int64_t mediaTimeUs) {
1031    Mutex::Autolock autoLock(mLock);
1032    // TRICKY: vorbis decoder generates multiple frames with the same
1033    // timestamp, so only update on the first frame with a given timestamp
1034    if (mediaTimeUs == mAnchorTimeMediaUs) {
1035        return;
1036    }
1037    setAudioFirstAnchorTimeIfNeeded_l(mediaTimeUs);
1038
1039    AudioTimestamp ts;
1040    status_t res = mAudioSink->getTimestamp(ts);
1041    if (res == OK) {
1042        int64_t nowUs = ALooper::GetNowUs();
1043        int64_t nowMediaUs = mediaTimeUs - getPendingAudioPlayoutDurationUs(nowUs);
1044        mMediaClock->updateAnchor(nowMediaUs, nowUs, mediaTimeUs);
1045    }
1046    mAnchorNumFramesWritten = mNumFramesWritten;
1047    mAnchorTimeMediaUs = mediaTimeUs;
1048}
1049
1050// Called without mLock acquired.
1051void NuPlayer::Renderer::postDrainVideoQueue() {
1052    if (mDrainVideoQueuePending
1053            || getSyncQueues()
1054            || (mPaused && mVideoSampleReceived)) {
1055        return;
1056    }
1057
1058    if (mVideoQueue.empty()) {
1059        return;
1060    }
1061
1062    QueueEntry &entry = *mVideoQueue.begin();
1063
1064    sp<AMessage> msg = new AMessage(kWhatDrainVideoQueue, this);
1065    msg->setInt32("drainGeneration", getDrainGeneration(false /* audio */));
1066
1067    if (entry.mBuffer == NULL) {
1068        // EOS doesn't carry a timestamp.
1069        msg->post();
1070        mDrainVideoQueuePending = true;
1071        return;
1072    }
1073
1074    int64_t delayUs;
1075    int64_t nowUs = ALooper::GetNowUs();
1076    int64_t realTimeUs;
1077    if (mFlags & FLAG_REAL_TIME) {
1078        int64_t mediaTimeUs;
1079        CHECK(entry.mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
1080        realTimeUs = mediaTimeUs;
1081    } else {
1082        int64_t mediaTimeUs;
1083        CHECK(entry.mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
1084
1085        {
1086            Mutex::Autolock autoLock(mLock);
1087            if (mAnchorTimeMediaUs < 0) {
1088                mMediaClock->updateAnchor(mediaTimeUs, nowUs, mediaTimeUs);
1089                mAnchorTimeMediaUs = mediaTimeUs;
1090                realTimeUs = nowUs;
1091            } else {
1092                realTimeUs = getRealTimeUs(mediaTimeUs, nowUs);
1093            }
1094        }
1095        if (!mHasAudio) {
1096            // smooth out videos >= 10fps
1097            mMediaClock->updateMaxTimeMedia(mediaTimeUs + 100000);
1098        }
1099
1100        // Heuristics to handle situation when media time changed without a
1101        // discontinuity. If we have not drained an audio buffer that was
1102        // received after this buffer, repost in 10 msec. Otherwise repost
1103        // in 500 msec.
1104        delayUs = realTimeUs - nowUs;
1105        if (delayUs > 500000) {
1106            int64_t postDelayUs = 500000;
1107            if (mHasAudio && (mLastAudioBufferDrained - entry.mBufferOrdinal) <= 0) {
1108                postDelayUs = 10000;
1109            }
1110            msg->setWhat(kWhatPostDrainVideoQueue);
1111            msg->post(postDelayUs);
1112            mVideoScheduler->restart();
1113            ALOGI("possible video time jump of %dms, retrying in %dms",
1114                    (int)(delayUs / 1000), (int)(postDelayUs / 1000));
1115            mDrainVideoQueuePending = true;
1116            return;
1117        }
1118    }
1119
1120    realTimeUs = mVideoScheduler->schedule(realTimeUs * 1000) / 1000;
1121    int64_t twoVsyncsUs = 2 * (mVideoScheduler->getVsyncPeriod() / 1000);
1122
1123    delayUs = realTimeUs - nowUs;
1124
1125    ALOGW_IF(delayUs > 500000, "unusually high delayUs: %" PRId64, delayUs);
1126    // post 2 display refreshes before rendering is due
1127    msg->post(delayUs > twoVsyncsUs ? delayUs - twoVsyncsUs : 0);
1128
1129    mDrainVideoQueuePending = true;
1130}
1131
1132void NuPlayer::Renderer::onDrainVideoQueue() {
1133    if (mVideoQueue.empty()) {
1134        return;
1135    }
1136
1137    QueueEntry *entry = &*mVideoQueue.begin();
1138
1139    if (entry->mBuffer == NULL) {
1140        // EOS
1141
1142        notifyEOS(false /* audio */, entry->mFinalResult);
1143
1144        mVideoQueue.erase(mVideoQueue.begin());
1145        entry = NULL;
1146
1147        setVideoLateByUs(0);
1148        return;
1149    }
1150
1151    int64_t nowUs = -1;
1152    int64_t realTimeUs;
1153    int64_t mediaTimeUs = -1;
1154    if (mFlags & FLAG_REAL_TIME) {
1155        CHECK(entry->mBuffer->meta()->findInt64("timeUs", &realTimeUs));
1156    } else {
1157        CHECK(entry->mBuffer->meta()->findInt64("timeUs", &mediaTimeUs));
1158
1159        nowUs = ALooper::GetNowUs();
1160        realTimeUs = getRealTimeUs(mediaTimeUs, nowUs);
1161    }
1162
1163    bool tooLate = false;
1164
1165    if (!mPaused) {
1166        if (nowUs == -1) {
1167            nowUs = ALooper::GetNowUs();
1168        }
1169        setVideoLateByUs(nowUs - realTimeUs);
1170        tooLate = (mVideoLateByUs > 40000);
1171
1172        if (tooLate) {
1173            ALOGV("video late by %lld us (%.2f secs)",
1174                 (long long)mVideoLateByUs, mVideoLateByUs / 1E6);
1175        } else {
1176            int64_t mediaUs = 0;
1177            mMediaClock->getMediaTime(realTimeUs, &mediaUs);
1178            ALOGV("rendering video at media time %.2f secs",
1179                    (mFlags & FLAG_REAL_TIME ? realTimeUs :
1180                    mediaUs) / 1E6);
1181
1182            if (!(mFlags & FLAG_REAL_TIME)
1183                    && mLastAudioMediaTimeUs != -1
1184                    && mediaTimeUs > mLastAudioMediaTimeUs) {
1185                // If audio ends before video, video continues to drive media clock.
1186                // Also smooth out videos >= 10fps.
1187                mMediaClock->updateMaxTimeMedia(mediaTimeUs + 100000);
1188            }
1189        }
1190    } else {
1191        setVideoLateByUs(0);
1192        if (!mVideoSampleReceived && !mHasAudio) {
1193            // This will ensure that the first frame after a flush won't be used as anchor
1194            // when renderer is in paused state, because resume can happen any time after seek.
1195            Mutex::Autolock autoLock(mLock);
1196            clearAnchorTime_l();
1197        }
1198    }
1199
1200    entry->mNotifyConsumed->setInt64("timestampNs", realTimeUs * 1000ll);
1201    entry->mNotifyConsumed->setInt32("render", !tooLate);
1202    entry->mNotifyConsumed->post();
1203    mVideoQueue.erase(mVideoQueue.begin());
1204    entry = NULL;
1205
1206    mVideoSampleReceived = true;
1207
1208    if (!mPaused) {
1209        if (!mVideoRenderingStarted) {
1210            mVideoRenderingStarted = true;
1211            notifyVideoRenderingStart();
1212        }
1213        Mutex::Autolock autoLock(mLock);
1214        notifyIfMediaRenderingStarted_l();
1215    }
1216}
1217
1218void NuPlayer::Renderer::notifyVideoRenderingStart() {
1219    sp<AMessage> notify = mNotify->dup();
1220    notify->setInt32("what", kWhatVideoRenderingStart);
1221    notify->post();
1222}
1223
1224void NuPlayer::Renderer::notifyEOS(bool audio, status_t finalResult, int64_t delayUs) {
1225    if (audio && delayUs > 0) {
1226        sp<AMessage> msg = new AMessage(kWhatEOS, this);
1227        msg->setInt32("audioEOSGeneration", mAudioEOSGeneration);
1228        msg->setInt32("finalResult", finalResult);
1229        msg->post(delayUs);
1230        return;
1231    }
1232    sp<AMessage> notify = mNotify->dup();
1233    notify->setInt32("what", kWhatEOS);
1234    notify->setInt32("audio", static_cast<int32_t>(audio));
1235    notify->setInt32("finalResult", finalResult);
1236    notify->post(delayUs);
1237}
1238
1239void NuPlayer::Renderer::notifyAudioTearDown() {
1240    (new AMessage(kWhatAudioTearDown, this))->post();
1241}
1242
1243void NuPlayer::Renderer::onQueueBuffer(const sp<AMessage> &msg) {
1244    int32_t audio;
1245    CHECK(msg->findInt32("audio", &audio));
1246
1247    if (dropBufferIfStale(audio, msg)) {
1248        return;
1249    }
1250
1251    if (audio) {
1252        mHasAudio = true;
1253    } else {
1254        mHasVideo = true;
1255    }
1256
1257    if (mHasVideo) {
1258        if (mVideoScheduler == NULL) {
1259            mVideoScheduler = new VideoFrameScheduler();
1260            mVideoScheduler->init();
1261        }
1262    }
1263
1264    sp<ABuffer> buffer;
1265    CHECK(msg->findBuffer("buffer", &buffer));
1266
1267    sp<AMessage> notifyConsumed;
1268    CHECK(msg->findMessage("notifyConsumed", &notifyConsumed));
1269
1270    QueueEntry entry;
1271    entry.mBuffer = buffer;
1272    entry.mNotifyConsumed = notifyConsumed;
1273    entry.mOffset = 0;
1274    entry.mFinalResult = OK;
1275    entry.mBufferOrdinal = ++mTotalBuffersQueued;
1276
1277    if (audio) {
1278        Mutex::Autolock autoLock(mLock);
1279        mAudioQueue.push_back(entry);
1280        postDrainAudioQueue_l();
1281    } else {
1282        mVideoQueue.push_back(entry);
1283        postDrainVideoQueue();
1284    }
1285
1286    Mutex::Autolock autoLock(mLock);
1287    if (!mSyncQueues || mAudioQueue.empty() || mVideoQueue.empty()) {
1288        return;
1289    }
1290
1291    sp<ABuffer> firstAudioBuffer = (*mAudioQueue.begin()).mBuffer;
1292    sp<ABuffer> firstVideoBuffer = (*mVideoQueue.begin()).mBuffer;
1293
1294    if (firstAudioBuffer == NULL || firstVideoBuffer == NULL) {
1295        // EOS signalled on either queue.
1296        syncQueuesDone_l();
1297        return;
1298    }
1299
1300    int64_t firstAudioTimeUs;
1301    int64_t firstVideoTimeUs;
1302    CHECK(firstAudioBuffer->meta()
1303            ->findInt64("timeUs", &firstAudioTimeUs));
1304    CHECK(firstVideoBuffer->meta()
1305            ->findInt64("timeUs", &firstVideoTimeUs));
1306
1307    int64_t diff = firstVideoTimeUs - firstAudioTimeUs;
1308
1309    ALOGV("queueDiff = %.2f secs", diff / 1E6);
1310
1311    if (diff > 100000ll) {
1312        // Audio data starts More than 0.1 secs before video.
1313        // Drop some audio.
1314
1315        (*mAudioQueue.begin()).mNotifyConsumed->post();
1316        mAudioQueue.erase(mAudioQueue.begin());
1317        return;
1318    }
1319
1320    syncQueuesDone_l();
1321}
1322
1323void NuPlayer::Renderer::syncQueuesDone_l() {
1324    if (!mSyncQueues) {
1325        return;
1326    }
1327
1328    mSyncQueues = false;
1329
1330    if (!mAudioQueue.empty()) {
1331        postDrainAudioQueue_l();
1332    }
1333
1334    if (!mVideoQueue.empty()) {
1335        mLock.unlock();
1336        postDrainVideoQueue();
1337        mLock.lock();
1338    }
1339}
1340
1341void NuPlayer::Renderer::onQueueEOS(const sp<AMessage> &msg) {
1342    int32_t audio;
1343    CHECK(msg->findInt32("audio", &audio));
1344
1345    if (dropBufferIfStale(audio, msg)) {
1346        return;
1347    }
1348
1349    int32_t finalResult;
1350    CHECK(msg->findInt32("finalResult", &finalResult));
1351
1352    QueueEntry entry;
1353    entry.mOffset = 0;
1354    entry.mFinalResult = finalResult;
1355
1356    if (audio) {
1357        Mutex::Autolock autoLock(mLock);
1358        if (mAudioQueue.empty() && mSyncQueues) {
1359            syncQueuesDone_l();
1360        }
1361        mAudioQueue.push_back(entry);
1362        postDrainAudioQueue_l();
1363    } else {
1364        if (mVideoQueue.empty() && getSyncQueues()) {
1365            Mutex::Autolock autoLock(mLock);
1366            syncQueuesDone_l();
1367        }
1368        mVideoQueue.push_back(entry);
1369        postDrainVideoQueue();
1370    }
1371}
1372
1373void NuPlayer::Renderer::onFlush(const sp<AMessage> &msg) {
1374    int32_t audio, notifyComplete;
1375    CHECK(msg->findInt32("audio", &audio));
1376
1377    {
1378        Mutex::Autolock autoLock(mLock);
1379        if (audio) {
1380            notifyComplete = mNotifyCompleteAudio;
1381            mNotifyCompleteAudio = false;
1382            mLastAudioMediaTimeUs = -1;
1383        } else {
1384            notifyComplete = mNotifyCompleteVideo;
1385            mNotifyCompleteVideo = false;
1386        }
1387
1388        // If we're currently syncing the queues, i.e. dropping audio while
1389        // aligning the first audio/video buffer times and only one of the
1390        // two queues has data, we may starve that queue by not requesting
1391        // more buffers from the decoder. If the other source then encounters
1392        // a discontinuity that leads to flushing, we'll never find the
1393        // corresponding discontinuity on the other queue.
1394        // Therefore we'll stop syncing the queues if at least one of them
1395        // is flushed.
1396        syncQueuesDone_l();
1397        clearAnchorTime_l();
1398    }
1399
1400    ALOGV("flushing %s", audio ? "audio" : "video");
1401    if (audio) {
1402        {
1403            Mutex::Autolock autoLock(mLock);
1404            flushQueue(&mAudioQueue);
1405
1406            ++mAudioDrainGeneration;
1407            ++mAudioEOSGeneration;
1408            prepareForMediaRenderingStart_l();
1409
1410            // the frame count will be reset after flush.
1411            clearAudioFirstAnchorTime_l();
1412        }
1413
1414        mDrainAudioQueuePending = false;
1415
1416        if (offloadingAudio()) {
1417            mAudioSink->pause();
1418            mAudioSink->flush();
1419            if (!mPaused) {
1420                mAudioSink->start();
1421            }
1422        } else {
1423            mAudioSink->pause();
1424            mAudioSink->flush();
1425            // Call stop() to signal to the AudioSink to completely fill the
1426            // internal buffer before resuming playback.
1427            // FIXME: this is ignored after flush().
1428            mAudioSink->stop();
1429            if (mPaused) {
1430                // Race condition: if renderer is paused and audio sink is stopped,
1431                // we need to make sure that the audio track buffer fully drains
1432                // before delivering data.
1433                // FIXME: remove this if we can detect if stop() is complete.
1434                const int delayUs = 2 * 50 * 1000; // (2 full mixer thread cycles at 50ms)
1435                mPauseDrainAudioAllowedUs = ALooper::GetNowUs() + delayUs;
1436            } else {
1437                mAudioSink->start();
1438            }
1439            mNumFramesWritten = 0;
1440        }
1441    } else {
1442        flushQueue(&mVideoQueue);
1443
1444        mDrainVideoQueuePending = false;
1445
1446        if (mVideoScheduler != NULL) {
1447            mVideoScheduler->restart();
1448        }
1449
1450        Mutex::Autolock autoLock(mLock);
1451        ++mVideoDrainGeneration;
1452        prepareForMediaRenderingStart_l();
1453    }
1454
1455    mVideoSampleReceived = false;
1456
1457    if (notifyComplete) {
1458        notifyFlushComplete(audio);
1459    }
1460}
1461
1462void NuPlayer::Renderer::flushQueue(List<QueueEntry> *queue) {
1463    while (!queue->empty()) {
1464        QueueEntry *entry = &*queue->begin();
1465
1466        if (entry->mBuffer != NULL) {
1467            entry->mNotifyConsumed->post();
1468        }
1469
1470        queue->erase(queue->begin());
1471        entry = NULL;
1472    }
1473}
1474
1475void NuPlayer::Renderer::notifyFlushComplete(bool audio) {
1476    sp<AMessage> notify = mNotify->dup();
1477    notify->setInt32("what", kWhatFlushComplete);
1478    notify->setInt32("audio", static_cast<int32_t>(audio));
1479    notify->post();
1480}
1481
1482bool NuPlayer::Renderer::dropBufferIfStale(
1483        bool audio, const sp<AMessage> &msg) {
1484    int32_t queueGeneration;
1485    CHECK(msg->findInt32("queueGeneration", &queueGeneration));
1486
1487    if (queueGeneration == getQueueGeneration(audio)) {
1488        return false;
1489    }
1490
1491    sp<AMessage> notifyConsumed;
1492    if (msg->findMessage("notifyConsumed", &notifyConsumed)) {
1493        notifyConsumed->post();
1494    }
1495
1496    return true;
1497}
1498
1499void NuPlayer::Renderer::onAudioSinkChanged() {
1500    if (offloadingAudio()) {
1501        return;
1502    }
1503    CHECK(!mDrainAudioQueuePending);
1504    mNumFramesWritten = 0;
1505    {
1506        Mutex::Autolock autoLock(mLock);
1507        mAnchorNumFramesWritten = -1;
1508    }
1509    uint32_t written;
1510    if (mAudioSink->getFramesWritten(&written) == OK) {
1511        mNumFramesWritten = written;
1512    }
1513}
1514
1515void NuPlayer::Renderer::onDisableOffloadAudio() {
1516    Mutex::Autolock autoLock(mLock);
1517    mFlags &= ~FLAG_OFFLOAD_AUDIO;
1518    ++mAudioDrainGeneration;
1519    if (mAudioRenderingStartGeneration != -1) {
1520        prepareForMediaRenderingStart_l();
1521    }
1522}
1523
1524void NuPlayer::Renderer::onEnableOffloadAudio() {
1525    Mutex::Autolock autoLock(mLock);
1526    mFlags |= FLAG_OFFLOAD_AUDIO;
1527    ++mAudioDrainGeneration;
1528    if (mAudioRenderingStartGeneration != -1) {
1529        prepareForMediaRenderingStart_l();
1530    }
1531}
1532
1533void NuPlayer::Renderer::onPause() {
1534    if (mPaused) {
1535        return;
1536    }
1537
1538    {
1539        Mutex::Autolock autoLock(mLock);
1540        // we do not increment audio drain generation so that we fill audio buffer during pause.
1541        ++mVideoDrainGeneration;
1542        prepareForMediaRenderingStart_l();
1543        mPaused = true;
1544        mMediaClock->setPlaybackRate(0.0);
1545    }
1546
1547    mDrainAudioQueuePending = false;
1548    mDrainVideoQueuePending = false;
1549
1550    if (mHasAudio) {
1551        mAudioSink->pause();
1552        startAudioOffloadPauseTimeout();
1553    }
1554
1555    ALOGV("now paused audio queue has %zu entries, video has %zu entries",
1556          mAudioQueue.size(), mVideoQueue.size());
1557}
1558
1559void NuPlayer::Renderer::onResume() {
1560    if (!mPaused) {
1561        return;
1562    }
1563
1564    if (mHasAudio) {
1565        cancelAudioOffloadPauseTimeout();
1566        status_t err = mAudioSink->start();
1567        if (err != OK) {
1568            ALOGE("cannot start AudioSink err %d", err);
1569            notifyAudioTearDown();
1570        }
1571    }
1572
1573    {
1574        Mutex::Autolock autoLock(mLock);
1575        mPaused = false;
1576        // rendering started message may have been delayed if we were paused.
1577        if (mRenderingDataDelivered) {
1578            notifyIfMediaRenderingStarted_l();
1579        }
1580        // configure audiosink as we did not do it when pausing
1581        if (mAudioSink != NULL && mAudioSink->ready()) {
1582            mAudioSink->setPlaybackRate(mPlaybackSettings);
1583        }
1584
1585        mMediaClock->setPlaybackRate(mPlaybackRate);
1586
1587        if (!mAudioQueue.empty()) {
1588            postDrainAudioQueue_l();
1589        }
1590    }
1591
1592    if (!mVideoQueue.empty()) {
1593        postDrainVideoQueue();
1594    }
1595}
1596
1597void NuPlayer::Renderer::onSetVideoFrameRate(float fps) {
1598    if (mVideoScheduler == NULL) {
1599        mVideoScheduler = new VideoFrameScheduler();
1600    }
1601    mVideoScheduler->init(fps);
1602}
1603
1604int32_t NuPlayer::Renderer::getQueueGeneration(bool audio) {
1605    Mutex::Autolock autoLock(mLock);
1606    return (audio ? mAudioQueueGeneration : mVideoQueueGeneration);
1607}
1608
1609int32_t NuPlayer::Renderer::getDrainGeneration(bool audio) {
1610    Mutex::Autolock autoLock(mLock);
1611    return (audio ? mAudioDrainGeneration : mVideoDrainGeneration);
1612}
1613
1614bool NuPlayer::Renderer::getSyncQueues() {
1615    Mutex::Autolock autoLock(mLock);
1616    return mSyncQueues;
1617}
1618
1619void NuPlayer::Renderer::onAudioTearDown(AudioTearDownReason reason) {
1620    if (mAudioTornDown) {
1621        return;
1622    }
1623    mAudioTornDown = true;
1624
1625    int64_t currentPositionUs;
1626    sp<AMessage> notify = mNotify->dup();
1627    if (getCurrentPosition(&currentPositionUs) == OK) {
1628        notify->setInt64("positionUs", currentPositionUs);
1629    }
1630
1631    mAudioSink->stop();
1632    mAudioSink->flush();
1633
1634    notify->setInt32("what", kWhatAudioTearDown);
1635    notify->setInt32("reason", reason);
1636    notify->post();
1637}
1638
1639void NuPlayer::Renderer::startAudioOffloadPauseTimeout() {
1640    if (offloadingAudio()) {
1641        mWakeLock->acquire();
1642        sp<AMessage> msg = new AMessage(kWhatAudioOffloadPauseTimeout, this);
1643        msg->setInt32("drainGeneration", mAudioOffloadPauseTimeoutGeneration);
1644        msg->post(kOffloadPauseMaxUs);
1645    }
1646}
1647
1648void NuPlayer::Renderer::cancelAudioOffloadPauseTimeout() {
1649    if (offloadingAudio()) {
1650        mWakeLock->release(true);
1651        ++mAudioOffloadPauseTimeoutGeneration;
1652    }
1653}
1654
1655status_t NuPlayer::Renderer::onOpenAudioSink(
1656        const sp<AMessage> &format,
1657        bool offloadOnly,
1658        bool hasVideo,
1659        uint32_t flags) {
1660    ALOGV("openAudioSink: offloadOnly(%d) offloadingAudio(%d)",
1661            offloadOnly, offloadingAudio());
1662    bool audioSinkChanged = false;
1663
1664    int32_t numChannels;
1665    CHECK(format->findInt32("channel-count", &numChannels));
1666
1667    int32_t channelMask;
1668    if (!format->findInt32("channel-mask", &channelMask)) {
1669        // signal to the AudioSink to derive the mask from count.
1670        channelMask = CHANNEL_MASK_USE_CHANNEL_ORDER;
1671    }
1672
1673    int32_t sampleRate;
1674    CHECK(format->findInt32("sample-rate", &sampleRate));
1675
1676    if (offloadingAudio()) {
1677        audio_format_t audioFormat = AUDIO_FORMAT_PCM_16_BIT;
1678        AString mime;
1679        CHECK(format->findString("mime", &mime));
1680        status_t err = mapMimeToAudioFormat(audioFormat, mime.c_str());
1681
1682        if (err != OK) {
1683            ALOGE("Couldn't map mime \"%s\" to a valid "
1684                    "audio_format", mime.c_str());
1685            onDisableOffloadAudio();
1686        } else {
1687            ALOGV("Mime \"%s\" mapped to audio_format 0x%x",
1688                    mime.c_str(), audioFormat);
1689
1690            int avgBitRate = -1;
1691            format->findInt32("bit-rate", &avgBitRate);
1692
1693            int32_t aacProfile = -1;
1694            if (audioFormat == AUDIO_FORMAT_AAC
1695                    && format->findInt32("aac-profile", &aacProfile)) {
1696                // Redefine AAC format as per aac profile
1697                mapAACProfileToAudioFormat(
1698                        audioFormat,
1699                        aacProfile);
1700            }
1701
1702            audio_offload_info_t offloadInfo = AUDIO_INFO_INITIALIZER;
1703            offloadInfo.duration_us = -1;
1704            format->findInt64(
1705                    "durationUs", &offloadInfo.duration_us);
1706            offloadInfo.sample_rate = sampleRate;
1707            offloadInfo.channel_mask = channelMask;
1708            offloadInfo.format = audioFormat;
1709            offloadInfo.stream_type = AUDIO_STREAM_MUSIC;
1710            offloadInfo.bit_rate = avgBitRate;
1711            offloadInfo.has_video = hasVideo;
1712            offloadInfo.is_streaming = true;
1713
1714            if (memcmp(&mCurrentOffloadInfo, &offloadInfo, sizeof(offloadInfo)) == 0) {
1715                ALOGV("openAudioSink: no change in offload mode");
1716                // no change from previous configuration, everything ok.
1717                return OK;
1718            }
1719            mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1720
1721            ALOGV("openAudioSink: try to open AudioSink in offload mode");
1722            uint32_t offloadFlags = flags;
1723            offloadFlags |= AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1724            offloadFlags &= ~AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
1725            audioSinkChanged = true;
1726            mAudioSink->close();
1727
1728            err = mAudioSink->open(
1729                    sampleRate,
1730                    numChannels,
1731                    (audio_channel_mask_t)channelMask,
1732                    audioFormat,
1733                    0 /* bufferCount - unused */,
1734                    &NuPlayer::Renderer::AudioSinkCallback,
1735                    this,
1736                    (audio_output_flags_t)offloadFlags,
1737                    &offloadInfo);
1738
1739            if (err == OK) {
1740                err = mAudioSink->setPlaybackRate(mPlaybackSettings);
1741            }
1742
1743            if (err == OK) {
1744                // If the playback is offloaded to h/w, we pass
1745                // the HAL some metadata information.
1746                // We don't want to do this for PCM because it
1747                // will be going through the AudioFlinger mixer
1748                // before reaching the hardware.
1749                // TODO
1750                mCurrentOffloadInfo = offloadInfo;
1751                if (!mPaused) { // for preview mode, don't start if paused
1752                    err = mAudioSink->start();
1753                }
1754                ALOGV_IF(err == OK, "openAudioSink: offload succeeded");
1755            }
1756            if (err != OK) {
1757                // Clean up, fall back to non offload mode.
1758                mAudioSink->close();
1759                onDisableOffloadAudio();
1760                mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1761                ALOGV("openAudioSink: offload failed");
1762            } else {
1763                mUseAudioCallback = true;  // offload mode transfers data through callback
1764                ++mAudioDrainGeneration;  // discard pending kWhatDrainAudioQueue message.
1765            }
1766        }
1767    }
1768    if (!offloadOnly && !offloadingAudio()) {
1769        ALOGV("openAudioSink: open AudioSink in NON-offload mode");
1770        uint32_t pcmFlags = flags;
1771        pcmFlags &= ~AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
1772
1773        const PcmInfo info = {
1774                (audio_channel_mask_t)channelMask,
1775                (audio_output_flags_t)pcmFlags,
1776                AUDIO_FORMAT_PCM_16_BIT, // TODO: change to audioFormat
1777                numChannels,
1778                sampleRate
1779        };
1780        if (memcmp(&mCurrentPcmInfo, &info, sizeof(info)) == 0) {
1781            ALOGV("openAudioSink: no change in pcm mode");
1782            // no change from previous configuration, everything ok.
1783            return OK;
1784        }
1785
1786        audioSinkChanged = true;
1787        mAudioSink->close();
1788        mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1789        // Note: It is possible to set up the callback, but not use it to send audio data.
1790        // This requires a fix in AudioSink to explicitly specify the transfer mode.
1791        mUseAudioCallback = getUseAudioCallbackSetting();
1792        if (mUseAudioCallback) {
1793            ++mAudioDrainGeneration;  // discard pending kWhatDrainAudioQueue message.
1794        }
1795
1796        // Compute the desired buffer size.
1797        // For callback mode, the amount of time before wakeup is about half the buffer size.
1798        const uint32_t frameCount =
1799                (unsigned long long)sampleRate * getAudioSinkPcmMsSetting() / 1000;
1800
1801        // The doNotReconnect means AudioSink will signal back and let NuPlayer to re-construct
1802        // AudioSink. We don't want this when there's video because it will cause a video seek to
1803        // the previous I frame. But we do want this when there's only audio because it will give
1804        // NuPlayer a chance to switch from non-offload mode to offload mode.
1805        // So we only set doNotReconnect when there's no video.
1806        const bool doNotReconnect = !hasVideo;
1807        status_t err = mAudioSink->open(
1808                    sampleRate,
1809                    numChannels,
1810                    (audio_channel_mask_t)channelMask,
1811                    AUDIO_FORMAT_PCM_16_BIT,
1812                    0 /* bufferCount - unused */,
1813                    mUseAudioCallback ? &NuPlayer::Renderer::AudioSinkCallback : NULL,
1814                    mUseAudioCallback ? this : NULL,
1815                    (audio_output_flags_t)pcmFlags,
1816                    NULL,
1817                    doNotReconnect,
1818                    frameCount);
1819        if (err == OK) {
1820            err = mAudioSink->setPlaybackRate(mPlaybackSettings);
1821        }
1822        if (err != OK) {
1823            ALOGW("openAudioSink: non offloaded open failed status: %d", err);
1824            mAudioSink->close();
1825            mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1826            return err;
1827        }
1828        mCurrentPcmInfo = info;
1829        if (!mPaused) { // for preview mode, don't start if paused
1830            mAudioSink->start();
1831        }
1832    }
1833    if (audioSinkChanged) {
1834        onAudioSinkChanged();
1835    }
1836    mAudioTornDown = false;
1837    return OK;
1838}
1839
1840void NuPlayer::Renderer::onCloseAudioSink() {
1841    mAudioSink->close();
1842    mCurrentOffloadInfo = AUDIO_INFO_INITIALIZER;
1843    mCurrentPcmInfo = AUDIO_PCMINFO_INITIALIZER;
1844}
1845
1846}  // namespace android
1847
1848