NuPlayer.cpp revision b58ce9f5e8d0696f9571a94ba5fc05f4500f663f 
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 "NuPlayer"
19#include <utils/Log.h>
20
21#include "NuPlayer.h"
22
23#include "HTTPLiveSource.h"
24#include "NuPlayerDecoder.h"
25#include "NuPlayerDriver.h"
26#include "NuPlayerRenderer.h"
27#include "NuPlayerSource.h"
28#include "RTSPSource.h"
29#include "StreamingSource.h"
30
31#include "ATSParser.h"
32
33#include <media/stagefright/foundation/hexdump.h>
34#include <media/stagefright/foundation/ABuffer.h>
35#include <media/stagefright/foundation/ADebug.h>
36#include <media/stagefright/foundation/AMessage.h>
37#include <media/stagefright/ACodec.h>
38#include <media/stagefright/MediaDefs.h>
39#include <media/stagefright/MediaErrors.h>
40#include <media/stagefright/MetaData.h>
41#include <surfaceflinger/Surface.h>
42#include <gui/ISurfaceTexture.h>
43
44#include "avc_utils.h"
45
46namespace android {
47
48////////////////////////////////////////////////////////////////////////////////
49
50NuPlayer::NuPlayer()
51    : mUIDValid(false),
52      mVideoIsAVC(false),
53      mAudioEOS(false),
54      mVideoEOS(false),
55      mScanSourcesPending(false),
56      mScanSourcesGeneration(0),
57      mFlushingAudio(NONE),
58      mFlushingVideo(NONE),
59      mResetInProgress(false),
60      mResetPostponed(false),
61      mSkipRenderingAudioUntilMediaTimeUs(-1ll),
62      mSkipRenderingVideoUntilMediaTimeUs(-1ll),
63      mVideoLateByUs(0ll),
64      mNumFramesTotal(0ll),
65      mNumFramesDropped(0ll) {
66}
67
68NuPlayer::~NuPlayer() {
69}
70
71void NuPlayer::setUID(uid_t uid) {
72    mUIDValid = true;
73    mUID = uid;
74}
75
76void NuPlayer::setDriver(const wp<NuPlayerDriver> &driver) {
77    mDriver = driver;
78}
79
80void NuPlayer::setDataSource(const sp<IStreamSource> &source) {
81    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
82
83    msg->setObject("source", new StreamingSource(source));
84    msg->post();
85}
86
87void NuPlayer::setDataSource(
88        const char *url, const KeyedVector<String8, String8> *headers) {
89    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
90
91    if (!strncasecmp(url, "rtsp://", 7)) {
92        msg->setObject(
93                "source", new RTSPSource(url, headers, mUIDValid, mUID));
94    } else {
95        msg->setObject(
96                "source", new HTTPLiveSource(url, headers, mUIDValid, mUID));
97    }
98
99    msg->post();
100}
101
102void NuPlayer::setVideoSurfaceTexture(const sp<ISurfaceTexture> &surfaceTexture) {
103    sp<AMessage> msg = new AMessage(kWhatSetVideoNativeWindow, id());
104    sp<SurfaceTextureClient> surfaceTextureClient(surfaceTexture != NULL ?
105                new SurfaceTextureClient(surfaceTexture) : NULL);
106    msg->setObject("native-window", new NativeWindowWrapper(surfaceTextureClient));
107    msg->post();
108}
109
110void NuPlayer::setAudioSink(const sp<MediaPlayerBase::AudioSink> &sink) {
111    sp<AMessage> msg = new AMessage(kWhatSetAudioSink, id());
112    msg->setObject("sink", sink);
113    msg->post();
114}
115
116void NuPlayer::start() {
117    (new AMessage(kWhatStart, id()))->post();
118}
119
120void NuPlayer::pause() {
121    (new AMessage(kWhatPause, id()))->post();
122}
123
124void NuPlayer::resume() {
125    (new AMessage(kWhatResume, id()))->post();
126}
127
128void NuPlayer::resetAsync() {
129    (new AMessage(kWhatReset, id()))->post();
130}
131
132void NuPlayer::seekToAsync(int64_t seekTimeUs) {
133    sp<AMessage> msg = new AMessage(kWhatSeek, id());
134    msg->setInt64("seekTimeUs", seekTimeUs);
135    msg->post();
136}
137
138// static
139bool NuPlayer::IsFlushingState(FlushStatus state, bool *needShutdown) {
140    switch (state) {
141        case FLUSHING_DECODER:
142            if (needShutdown != NULL) {
143                *needShutdown = false;
144            }
145            return true;
146
147        case FLUSHING_DECODER_SHUTDOWN:
148            if (needShutdown != NULL) {
149                *needShutdown = true;
150            }
151            return true;
152
153        default:
154            return false;
155    }
156}
157
158void NuPlayer::onMessageReceived(const sp<AMessage> &msg) {
159    switch (msg->what()) {
160        case kWhatSetDataSource:
161        {
162            LOGV("kWhatSetDataSource");
163
164            CHECK(mSource == NULL);
165
166            sp<RefBase> obj;
167            CHECK(msg->findObject("source", &obj));
168
169            mSource = static_cast<Source *>(obj.get());
170            break;
171        }
172
173        case kWhatSetVideoNativeWindow:
174        {
175            LOGV("kWhatSetVideoNativeWindow");
176
177            sp<RefBase> obj;
178            CHECK(msg->findObject("native-window", &obj));
179
180            mNativeWindow = static_cast<NativeWindowWrapper *>(obj.get());
181            break;
182        }
183
184        case kWhatSetAudioSink:
185        {
186            LOGV("kWhatSetAudioSink");
187
188            sp<RefBase> obj;
189            CHECK(msg->findObject("sink", &obj));
190
191            mAudioSink = static_cast<MediaPlayerBase::AudioSink *>(obj.get());
192            break;
193        }
194
195        case kWhatStart:
196        {
197            LOGV("kWhatStart");
198
199            mVideoIsAVC = false;
200            mAudioEOS = false;
201            mVideoEOS = false;
202            mSkipRenderingAudioUntilMediaTimeUs = -1;
203            mSkipRenderingVideoUntilMediaTimeUs = -1;
204            mVideoLateByUs = 0;
205            mNumFramesTotal = 0;
206            mNumFramesDropped = 0;
207
208            mSource->start();
209
210            mRenderer = new Renderer(
211                    mAudioSink,
212                    new AMessage(kWhatRendererNotify, id()));
213
214            looper()->registerHandler(mRenderer);
215
216            postScanSources();
217            break;
218        }
219
220        case kWhatScanSources:
221        {
222            int32_t generation;
223            CHECK(msg->findInt32("generation", &generation));
224            if (generation != mScanSourcesGeneration) {
225                // Drop obsolete msg.
226                break;
227            }
228
229            mScanSourcesPending = false;
230
231            LOGV("scanning sources haveAudio=%d, haveVideo=%d",
232                 mAudioDecoder != NULL, mVideoDecoder != NULL);
233
234            instantiateDecoder(false, &mVideoDecoder);
235
236            if (mAudioSink != NULL) {
237                instantiateDecoder(true, &mAudioDecoder);
238            }
239
240            status_t err;
241            if ((err = mSource->feedMoreTSData()) != OK) {
242                if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
243                    // We're not currently decoding anything (no audio or
244                    // video tracks found) and we just ran out of input data.
245
246                    if (err == ERROR_END_OF_STREAM) {
247                        notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
248                    } else {
249                        notifyListener(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, err);
250                    }
251                }
252                break;
253            }
254
255            if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
256                msg->post(100000ll);
257                mScanSourcesPending = true;
258            }
259            break;
260        }
261
262        case kWhatVideoNotify:
263        case kWhatAudioNotify:
264        {
265            bool audio = msg->what() == kWhatAudioNotify;
266
267            sp<AMessage> codecRequest;
268            CHECK(msg->findMessage("codec-request", &codecRequest));
269
270            int32_t what;
271            CHECK(codecRequest->findInt32("what", &what));
272
273            if (what == ACodec::kWhatFillThisBuffer) {
274                status_t err = feedDecoderInputData(
275                        audio, codecRequest);
276
277                if (err == -EWOULDBLOCK) {
278                    if (mSource->feedMoreTSData() == OK) {
279                        msg->post(10000ll);
280                    }
281                }
282            } else if (what == ACodec::kWhatEOS) {
283                int32_t err;
284                CHECK(codecRequest->findInt32("err", &err));
285
286                if (err == ERROR_END_OF_STREAM) {
287                    LOGV("got %s decoder EOS", audio ? "audio" : "video");
288                } else {
289                    LOGV("got %s decoder EOS w/ error %d",
290                         audio ? "audio" : "video",
291                         err);
292                }
293
294                mRenderer->queueEOS(audio, err);
295            } else if (what == ACodec::kWhatFlushCompleted) {
296                bool needShutdown;
297
298                if (audio) {
299                    CHECK(IsFlushingState(mFlushingAudio, &needShutdown));
300                    mFlushingAudio = FLUSHED;
301                } else {
302                    CHECK(IsFlushingState(mFlushingVideo, &needShutdown));
303                    mFlushingVideo = FLUSHED;
304
305                    mVideoLateByUs = 0;
306                }
307
308                LOGV("decoder %s flush completed", audio ? "audio" : "video");
309
310                if (needShutdown) {
311                    LOGV("initiating %s decoder shutdown",
312                         audio ? "audio" : "video");
313
314                    (audio ? mAudioDecoder : mVideoDecoder)->initiateShutdown();
315
316                    if (audio) {
317                        mFlushingAudio = SHUTTING_DOWN_DECODER;
318                    } else {
319                        mFlushingVideo = SHUTTING_DOWN_DECODER;
320                    }
321                }
322
323                finishFlushIfPossible();
324            } else if (what == ACodec::kWhatOutputFormatChanged) {
325                if (audio) {
326                    int32_t numChannels;
327                    CHECK(codecRequest->findInt32("channel-count", &numChannels));
328
329                    int32_t sampleRate;
330                    CHECK(codecRequest->findInt32("sample-rate", &sampleRate));
331
332                    LOGV("Audio output format changed to %d Hz, %d channels",
333                         sampleRate, numChannels);
334
335                    mAudioSink->close();
336                    CHECK_EQ(mAudioSink->open(
337                                sampleRate,
338                                numChannels,
339                                AUDIO_FORMAT_PCM_16_BIT,
340                                8 /* bufferCount */),
341                             (status_t)OK);
342                    mAudioSink->start();
343
344                    mRenderer->signalAudioSinkChanged();
345                } else {
346                    // video
347
348                    int32_t width, height;
349                    CHECK(codecRequest->findInt32("width", &width));
350                    CHECK(codecRequest->findInt32("height", &height));
351
352                    int32_t cropLeft, cropTop, cropRight, cropBottom;
353                    CHECK(codecRequest->findRect(
354                                "crop",
355                                &cropLeft, &cropTop, &cropRight, &cropBottom));
356
357                    LOGV("Video output format changed to %d x %d "
358                         "(crop: %d x %d @ (%d, %d))",
359                         width, height,
360                         (cropRight - cropLeft + 1),
361                         (cropBottom - cropTop + 1),
362                         cropLeft, cropTop);
363
364                    notifyListener(
365                            MEDIA_SET_VIDEO_SIZE,
366                            cropRight - cropLeft + 1,
367                            cropBottom - cropTop + 1);
368                }
369            } else if (what == ACodec::kWhatShutdownCompleted) {
370                LOGV("%s shutdown completed", audio ? "audio" : "video");
371                if (audio) {
372                    mAudioDecoder.clear();
373
374                    CHECK_EQ((int)mFlushingAudio, (int)SHUTTING_DOWN_DECODER);
375                    mFlushingAudio = SHUT_DOWN;
376                } else {
377                    mVideoDecoder.clear();
378
379                    CHECK_EQ((int)mFlushingVideo, (int)SHUTTING_DOWN_DECODER);
380                    mFlushingVideo = SHUT_DOWN;
381                }
382
383                finishFlushIfPossible();
384            } else if (what == ACodec::kWhatError) {
385                LOGE("Received error from %s decoder, aborting playback.",
386                     audio ? "audio" : "video");
387
388                mRenderer->queueEOS(audio, UNKNOWN_ERROR);
389            } else {
390                CHECK_EQ((int)what, (int)ACodec::kWhatDrainThisBuffer);
391
392                renderBuffer(audio, codecRequest);
393            }
394
395            break;
396        }
397
398        case kWhatRendererNotify:
399        {
400            int32_t what;
401            CHECK(msg->findInt32("what", &what));
402
403            if (what == Renderer::kWhatEOS) {
404                int32_t audio;
405                CHECK(msg->findInt32("audio", &audio));
406
407                int32_t finalResult;
408                CHECK(msg->findInt32("finalResult", &finalResult));
409
410                if (audio) {
411                    mAudioEOS = true;
412                } else {
413                    mVideoEOS = true;
414                }
415
416                if (finalResult == ERROR_END_OF_STREAM) {
417                    LOGV("reached %s EOS", audio ? "audio" : "video");
418                } else {
419                    LOGE("%s track encountered an error (%d)",
420                         audio ? "audio" : "video", finalResult);
421
422                    notifyListener(
423                            MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, finalResult);
424                }
425
426                if ((mAudioEOS || mAudioDecoder == NULL)
427                        && (mVideoEOS || mVideoDecoder == NULL)) {
428                    notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
429                }
430            } else if (what == Renderer::kWhatPosition) {
431                int64_t positionUs;
432                CHECK(msg->findInt64("positionUs", &positionUs));
433
434                CHECK(msg->findInt64("videoLateByUs", &mVideoLateByUs));
435
436                if (mDriver != NULL) {
437                    sp<NuPlayerDriver> driver = mDriver.promote();
438                    if (driver != NULL) {
439                        driver->notifyPosition(positionUs);
440
441                        driver->notifyFrameStats(
442                                mNumFramesTotal, mNumFramesDropped);
443                    }
444                }
445            } else if (what == Renderer::kWhatFlushComplete) {
446                CHECK_EQ(what, (int32_t)Renderer::kWhatFlushComplete);
447
448                int32_t audio;
449                CHECK(msg->findInt32("audio", &audio));
450
451                LOGV("renderer %s flush completed.", audio ? "audio" : "video");
452            }
453            break;
454        }
455
456        case kWhatMoreDataQueued:
457        {
458            break;
459        }
460
461        case kWhatReset:
462        {
463            LOGV("kWhatReset");
464
465            if (mRenderer != NULL) {
466                // There's an edge case where the renderer owns all output
467                // buffers and is paused, therefore the decoder will not read
468                // more input data and will never encounter the matching
469                // discontinuity. To avoid this, we resume the renderer.
470
471                if (mFlushingAudio == AWAITING_DISCONTINUITY
472                        || mFlushingVideo == AWAITING_DISCONTINUITY) {
473                    mRenderer->resume();
474                }
475            }
476
477            if (mFlushingAudio != NONE || mFlushingVideo != NONE) {
478                // We're currently flushing, postpone the reset until that's
479                // completed.
480
481                LOGV("postponing reset mFlushingAudio=%d, mFlushingVideo=%d",
482                        mFlushingAudio, mFlushingVideo);
483
484                mResetPostponed = true;
485                break;
486            }
487
488            if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
489                finishReset();
490                break;
491            }
492
493            if (mAudioDecoder != NULL) {
494                flushDecoder(true /* audio */, true /* needShutdown */);
495            }
496
497            if (mVideoDecoder != NULL) {
498                flushDecoder(false /* audio */, true /* needShutdown */);
499            }
500
501            mResetInProgress = true;
502            break;
503        }
504
505        case kWhatSeek:
506        {
507            int64_t seekTimeUs;
508            CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
509
510            LOGV("kWhatSeek seekTimeUs=%lld us (%.2f secs)",
511                 seekTimeUs, seekTimeUs / 1E6);
512
513            mSource->seekTo(seekTimeUs);
514
515            if (mDriver != NULL) {
516                sp<NuPlayerDriver> driver = mDriver.promote();
517                if (driver != NULL) {
518                    driver->notifySeekComplete();
519                }
520            }
521
522            break;
523        }
524
525        case kWhatPause:
526        {
527            CHECK(mRenderer != NULL);
528            mRenderer->pause();
529            break;
530        }
531
532        case kWhatResume:
533        {
534            CHECK(mRenderer != NULL);
535            mRenderer->resume();
536            break;
537        }
538
539        default:
540            TRESPASS();
541            break;
542    }
543}
544
545void NuPlayer::finishFlushIfPossible() {
546    if (mFlushingAudio != FLUSHED && mFlushingAudio != SHUT_DOWN) {
547        return;
548    }
549
550    if (mFlushingVideo != FLUSHED && mFlushingVideo != SHUT_DOWN) {
551        return;
552    }
553
554    LOGV("both audio and video are flushed now.");
555
556    mRenderer->signalTimeDiscontinuity();
557
558    if (mAudioDecoder != NULL) {
559        mAudioDecoder->signalResume();
560    }
561
562    if (mVideoDecoder != NULL) {
563        mVideoDecoder->signalResume();
564    }
565
566    mFlushingAudio = NONE;
567    mFlushingVideo = NONE;
568
569    if (mResetInProgress) {
570        LOGV("reset completed");
571
572        mResetInProgress = false;
573        finishReset();
574    } else if (mResetPostponed) {
575        (new AMessage(kWhatReset, id()))->post();
576        mResetPostponed = false;
577    } else if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
578        postScanSources();
579    }
580}
581
582void NuPlayer::finishReset() {
583    CHECK(mAudioDecoder == NULL);
584    CHECK(mVideoDecoder == NULL);
585
586    ++mScanSourcesGeneration;
587    mScanSourcesPending = false;
588
589    mRenderer.clear();
590
591    if (mSource != NULL) {
592        mSource->stop();
593        mSource.clear();
594    }
595
596    if (mDriver != NULL) {
597        sp<NuPlayerDriver> driver = mDriver.promote();
598        if (driver != NULL) {
599            driver->notifyResetComplete();
600        }
601    }
602}
603
604void NuPlayer::postScanSources() {
605    if (mScanSourcesPending) {
606        return;
607    }
608
609    sp<AMessage> msg = new AMessage(kWhatScanSources, id());
610    msg->setInt32("generation", mScanSourcesGeneration);
611    msg->post();
612
613    mScanSourcesPending = true;
614}
615
616status_t NuPlayer::instantiateDecoder(bool audio, sp<Decoder> *decoder) {
617    if (*decoder != NULL) {
618        return OK;
619    }
620
621    sp<MetaData> meta = mSource->getFormat(audio);
622
623    if (meta == NULL) {
624        return -EWOULDBLOCK;
625    }
626
627    if (!audio) {
628        const char *mime;
629        CHECK(meta->findCString(kKeyMIMEType, &mime));
630        mVideoIsAVC = !strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime);
631    }
632
633    sp<AMessage> notify =
634        new AMessage(audio ? kWhatAudioNotify : kWhatVideoNotify,
635                     id());
636
637    *decoder = audio ? new Decoder(notify) :
638                       new Decoder(notify, mNativeWindow);
639    looper()->registerHandler(*decoder);
640
641    (*decoder)->configure(meta);
642
643    int64_t durationUs;
644    if (mDriver != NULL && mSource->getDuration(&durationUs) == OK) {
645        sp<NuPlayerDriver> driver = mDriver.promote();
646        if (driver != NULL) {
647            driver->notifyDuration(durationUs);
648        }
649    }
650
651    return OK;
652}
653
654status_t NuPlayer::feedDecoderInputData(bool audio, const sp<AMessage> &msg) {
655    sp<AMessage> reply;
656    CHECK(msg->findMessage("reply", &reply));
657
658    if ((audio && IsFlushingState(mFlushingAudio))
659            || (!audio && IsFlushingState(mFlushingVideo))) {
660        reply->setInt32("err", INFO_DISCONTINUITY);
661        reply->post();
662        return OK;
663    }
664
665    sp<ABuffer> accessUnit;
666
667    bool dropAccessUnit;
668    do {
669        status_t err = mSource->dequeueAccessUnit(audio, &accessUnit);
670
671        if (err == -EWOULDBLOCK) {
672            return err;
673        } else if (err != OK) {
674            if (err == INFO_DISCONTINUITY) {
675                int32_t type;
676                CHECK(accessUnit->meta()->findInt32("discontinuity", &type));
677
678                bool formatChange =
679                    type == ATSParser::DISCONTINUITY_FORMATCHANGE;
680
681                LOGV("%s discontinuity (formatChange=%d)",
682                     audio ? "audio" : "video", formatChange);
683
684                if (audio) {
685                    mSkipRenderingAudioUntilMediaTimeUs = -1;
686                } else {
687                    mSkipRenderingVideoUntilMediaTimeUs = -1;
688                }
689
690                sp<AMessage> extra;
691                if (accessUnit->meta()->findMessage("extra", &extra)
692                        && extra != NULL) {
693                    int64_t resumeAtMediaTimeUs;
694                    if (extra->findInt64(
695                                "resume-at-mediatimeUs", &resumeAtMediaTimeUs)) {
696                        LOGI("suppressing rendering of %s until %lld us",
697                                audio ? "audio" : "video", resumeAtMediaTimeUs);
698
699                        if (audio) {
700                            mSkipRenderingAudioUntilMediaTimeUs =
701                                resumeAtMediaTimeUs;
702                        } else {
703                            mSkipRenderingVideoUntilMediaTimeUs =
704                                resumeAtMediaTimeUs;
705                        }
706                    }
707                }
708
709                flushDecoder(audio, formatChange);
710            }
711
712            reply->setInt32("err", err);
713            reply->post();
714            return OK;
715        }
716
717        if (!audio) {
718            ++mNumFramesTotal;
719        }
720
721        dropAccessUnit = false;
722        if (!audio
723                && mVideoLateByUs > 100000ll
724                && mVideoIsAVC
725                && !IsAVCReferenceFrame(accessUnit)) {
726            dropAccessUnit = true;
727            ++mNumFramesDropped;
728        }
729    } while (dropAccessUnit);
730
731    // LOGV("returned a valid buffer of %s data", audio ? "audio" : "video");
732
733#if 0
734    int64_t mediaTimeUs;
735    CHECK(accessUnit->meta()->findInt64("timeUs", &mediaTimeUs));
736    LOGV("feeding %s input buffer at media time %.2f secs",
737         audio ? "audio" : "video",
738         mediaTimeUs / 1E6);
739#endif
740
741    reply->setObject("buffer", accessUnit);
742    reply->post();
743
744    return OK;
745}
746
747void NuPlayer::renderBuffer(bool audio, const sp<AMessage> &msg) {
748    // LOGV("renderBuffer %s", audio ? "audio" : "video");
749
750    sp<AMessage> reply;
751    CHECK(msg->findMessage("reply", &reply));
752
753    if (IsFlushingState(audio ? mFlushingAudio : mFlushingVideo)) {
754        // We're currently attempting to flush the decoder, in order
755        // to complete this, the decoder wants all its buffers back,
756        // so we don't want any output buffers it sent us (from before
757        // we initiated the flush) to be stuck in the renderer's queue.
758
759        LOGV("we're still flushing the %s decoder, sending its output buffer"
760             " right back.", audio ? "audio" : "video");
761
762        reply->post();
763        return;
764    }
765
766    sp<RefBase> obj;
767    CHECK(msg->findObject("buffer", &obj));
768
769    sp<ABuffer> buffer = static_cast<ABuffer *>(obj.get());
770
771    int64_t &skipUntilMediaTimeUs =
772        audio
773            ? mSkipRenderingAudioUntilMediaTimeUs
774            : mSkipRenderingVideoUntilMediaTimeUs;
775
776    if (skipUntilMediaTimeUs >= 0) {
777        int64_t mediaTimeUs;
778        CHECK(buffer->meta()->findInt64("timeUs", &mediaTimeUs));
779
780        if (mediaTimeUs < skipUntilMediaTimeUs) {
781            LOGV("dropping %s buffer at time %lld as requested.",
782                 audio ? "audio" : "video",
783                 mediaTimeUs);
784
785            reply->post();
786            return;
787        }
788
789        skipUntilMediaTimeUs = -1;
790    }
791
792    mRenderer->queueBuffer(audio, buffer, reply);
793}
794
795void NuPlayer::notifyListener(int msg, int ext1, int ext2) {
796    if (mDriver == NULL) {
797        return;
798    }
799
800    sp<NuPlayerDriver> driver = mDriver.promote();
801
802    if (driver == NULL) {
803        return;
804    }
805
806    driver->notifyListener(msg, ext1, ext2);
807}
808
809void NuPlayer::flushDecoder(bool audio, bool needShutdown) {
810    // Make sure we don't continue to scan sources until we finish flushing.
811    ++mScanSourcesGeneration;
812    mScanSourcesPending = false;
813
814    (audio ? mAudioDecoder : mVideoDecoder)->signalFlush();
815    mRenderer->flush(audio);
816
817    FlushStatus newStatus =
818        needShutdown ? FLUSHING_DECODER_SHUTDOWN : FLUSHING_DECODER;
819
820    if (audio) {
821        CHECK(mFlushingAudio == NONE
822                || mFlushingAudio == AWAITING_DISCONTINUITY);
823
824        mFlushingAudio = newStatus;
825
826        if (mFlushingVideo == NONE) {
827            mFlushingVideo = (mVideoDecoder != NULL)
828                ? AWAITING_DISCONTINUITY
829                : FLUSHED;
830        }
831    } else {
832        CHECK(mFlushingVideo == NONE
833                || mFlushingVideo == AWAITING_DISCONTINUITY);
834
835        mFlushingVideo = newStatus;
836
837        if (mFlushingAudio == NONE) {
838            mFlushingAudio = (mAudioDecoder != NULL)
839                ? AWAITING_DISCONTINUITY
840                : FLUSHED;
841        }
842    }
843}
844
845}  // namespace android
846