NuPlayer.cpp revision 9806555d3930be43e11106281dee354820ac1c88 
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#include "GenericSource.h"
31
32#include "ATSParser.h"
33
34#include <media/stagefright/foundation/hexdump.h>
35#include <media/stagefright/foundation/ABuffer.h>
36#include <media/stagefright/foundation/ADebug.h>
37#include <media/stagefright/foundation/AMessage.h>
38#include <media/stagefright/ACodec.h>
39#include <media/stagefright/MediaDefs.h>
40#include <media/stagefright/MediaErrors.h>
41#include <media/stagefright/MetaData.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      mTimeDiscontinuityPending(false),
58      mFlushingAudio(NONE),
59      mFlushingVideo(NONE),
60      mResetInProgress(false),
61      mResetPostponed(false),
62      mSkipRenderingAudioUntilMediaTimeUs(-1ll),
63      mSkipRenderingVideoUntilMediaTimeUs(-1ll),
64      mVideoLateByUs(0ll),
65      mNumFramesTotal(0ll),
66      mNumFramesDropped(0ll) {
67}
68
69NuPlayer::~NuPlayer() {
70}
71
72void NuPlayer::setUID(uid_t uid) {
73    mUIDValid = true;
74    mUID = uid;
75}
76
77void NuPlayer::setDriver(const wp<NuPlayerDriver> &driver) {
78    mDriver = driver;
79}
80
81void NuPlayer::setDataSource(const sp<IStreamSource> &source) {
82    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
83
84    msg->setObject("source", new StreamingSource(source));
85    msg->post();
86}
87
88static bool IsHTTPLiveURL(const char *url) {
89    if (!strncasecmp("http://", url, 7)
90            || !strncasecmp("https://", url, 8)) {
91        size_t len = strlen(url);
92        if (len >= 5 && !strcasecmp(".m3u8", &url[len - 5])) {
93            return true;
94        }
95
96        if (strstr(url,"m3u8")) {
97            return true;
98        }
99    }
100
101    return false;
102}
103
104void NuPlayer::setDataSource(
105        const char *url, const KeyedVector<String8, String8> *headers) {
106    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
107
108    sp<Source> source;
109    if (IsHTTPLiveURL(url)) {
110        source = new HTTPLiveSource(url, headers, mUIDValid, mUID);
111    } else if (!strncasecmp(url, "rtsp://", 7)) {
112        source = new RTSPSource(url, headers, mUIDValid, mUID);
113    } else {
114        source = new GenericSource(url, headers, mUIDValid, mUID);
115    }
116
117    msg->setObject("source", source);
118    msg->post();
119}
120
121void NuPlayer::setDataSource(int fd, int64_t offset, int64_t length) {
122    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
123
124    sp<Source> source = new GenericSource(fd, offset, length);
125    msg->setObject("source", source);
126    msg->post();
127}
128
129void NuPlayer::setVideoSurfaceTexture(const sp<ISurfaceTexture> &surfaceTexture) {
130    sp<AMessage> msg = new AMessage(kWhatSetVideoNativeWindow, id());
131    sp<SurfaceTextureClient> surfaceTextureClient(surfaceTexture != NULL ?
132                new SurfaceTextureClient(surfaceTexture) : NULL);
133    msg->setObject("native-window", new NativeWindowWrapper(surfaceTextureClient));
134    msg->post();
135}
136
137void NuPlayer::setAudioSink(const sp<MediaPlayerBase::AudioSink> &sink) {
138    sp<AMessage> msg = new AMessage(kWhatSetAudioSink, id());
139    msg->setObject("sink", sink);
140    msg->post();
141}
142
143void NuPlayer::start() {
144    (new AMessage(kWhatStart, id()))->post();
145}
146
147void NuPlayer::pause() {
148    (new AMessage(kWhatPause, id()))->post();
149}
150
151void NuPlayer::resume() {
152    (new AMessage(kWhatResume, id()))->post();
153}
154
155void NuPlayer::resetAsync() {
156    (new AMessage(kWhatReset, id()))->post();
157}
158
159void NuPlayer::seekToAsync(int64_t seekTimeUs) {
160    sp<AMessage> msg = new AMessage(kWhatSeek, id());
161    msg->setInt64("seekTimeUs", seekTimeUs);
162    msg->post();
163}
164
165// static
166bool NuPlayer::IsFlushingState(FlushStatus state, bool *needShutdown) {
167    switch (state) {
168        case FLUSHING_DECODER:
169            if (needShutdown != NULL) {
170                *needShutdown = false;
171            }
172            return true;
173
174        case FLUSHING_DECODER_SHUTDOWN:
175            if (needShutdown != NULL) {
176                *needShutdown = true;
177            }
178            return true;
179
180        default:
181            return false;
182    }
183}
184
185void NuPlayer::onMessageReceived(const sp<AMessage> &msg) {
186    switch (msg->what()) {
187        case kWhatSetDataSource:
188        {
189            ALOGV("kWhatSetDataSource");
190
191            CHECK(mSource == NULL);
192
193            sp<RefBase> obj;
194            CHECK(msg->findObject("source", &obj));
195
196            mSource = static_cast<Source *>(obj.get());
197            break;
198        }
199
200        case kWhatSetVideoNativeWindow:
201        {
202            ALOGV("kWhatSetVideoNativeWindow");
203
204            sp<RefBase> obj;
205            CHECK(msg->findObject("native-window", &obj));
206
207            mNativeWindow = static_cast<NativeWindowWrapper *>(obj.get());
208            break;
209        }
210
211        case kWhatSetAudioSink:
212        {
213            ALOGV("kWhatSetAudioSink");
214
215            sp<RefBase> obj;
216            CHECK(msg->findObject("sink", &obj));
217
218            mAudioSink = static_cast<MediaPlayerBase::AudioSink *>(obj.get());
219            break;
220        }
221
222        case kWhatStart:
223        {
224            ALOGV("kWhatStart");
225
226            mVideoIsAVC = false;
227            mAudioEOS = false;
228            mVideoEOS = false;
229            mSkipRenderingAudioUntilMediaTimeUs = -1;
230            mSkipRenderingVideoUntilMediaTimeUs = -1;
231            mVideoLateByUs = 0;
232            mNumFramesTotal = 0;
233            mNumFramesDropped = 0;
234
235            mSource->start();
236
237            mRenderer = new Renderer(
238                    mAudioSink,
239                    new AMessage(kWhatRendererNotify, id()));
240
241            looper()->registerHandler(mRenderer);
242
243            postScanSources();
244            break;
245        }
246
247        case kWhatScanSources:
248        {
249            int32_t generation;
250            CHECK(msg->findInt32("generation", &generation));
251            if (generation != mScanSourcesGeneration) {
252                // Drop obsolete msg.
253                break;
254            }
255
256            mScanSourcesPending = false;
257
258            ALOGV("scanning sources haveAudio=%d, haveVideo=%d",
259                 mAudioDecoder != NULL, mVideoDecoder != NULL);
260
261            instantiateDecoder(false, &mVideoDecoder);
262
263            if (mAudioSink != NULL) {
264                instantiateDecoder(true, &mAudioDecoder);
265            }
266
267            status_t err;
268            if ((err = mSource->feedMoreTSData()) != OK) {
269                if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
270                    // We're not currently decoding anything (no audio or
271                    // video tracks found) and we just ran out of input data.
272
273                    if (err == ERROR_END_OF_STREAM) {
274                        notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
275                    } else {
276                        notifyListener(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, err);
277                    }
278                }
279                break;
280            }
281
282            if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
283                msg->post(100000ll);
284                mScanSourcesPending = true;
285            }
286            break;
287        }
288
289        case kWhatVideoNotify:
290        case kWhatAudioNotify:
291        {
292            bool audio = msg->what() == kWhatAudioNotify;
293
294            sp<AMessage> codecRequest;
295            CHECK(msg->findMessage("codec-request", &codecRequest));
296
297            int32_t what;
298            CHECK(codecRequest->findInt32("what", &what));
299
300            if (what == ACodec::kWhatFillThisBuffer) {
301                status_t err = feedDecoderInputData(
302                        audio, codecRequest);
303
304                if (err == -EWOULDBLOCK) {
305                    if (mSource->feedMoreTSData() == OK) {
306                        msg->post(10000ll);
307                    }
308                }
309            } else if (what == ACodec::kWhatEOS) {
310                int32_t err;
311                CHECK(codecRequest->findInt32("err", &err));
312
313                if (err == ERROR_END_OF_STREAM) {
314                    ALOGV("got %s decoder EOS", audio ? "audio" : "video");
315                } else {
316                    ALOGV("got %s decoder EOS w/ error %d",
317                         audio ? "audio" : "video",
318                         err);
319                }
320
321                mRenderer->queueEOS(audio, err);
322            } else if (what == ACodec::kWhatFlushCompleted) {
323                bool needShutdown;
324
325                if (audio) {
326                    CHECK(IsFlushingState(mFlushingAudio, &needShutdown));
327                    mFlushingAudio = FLUSHED;
328                } else {
329                    CHECK(IsFlushingState(mFlushingVideo, &needShutdown));
330                    mFlushingVideo = FLUSHED;
331
332                    mVideoLateByUs = 0;
333                }
334
335                ALOGV("decoder %s flush completed", audio ? "audio" : "video");
336
337                if (needShutdown) {
338                    ALOGV("initiating %s decoder shutdown",
339                         audio ? "audio" : "video");
340
341                    (audio ? mAudioDecoder : mVideoDecoder)->initiateShutdown();
342
343                    if (audio) {
344                        mFlushingAudio = SHUTTING_DOWN_DECODER;
345                    } else {
346                        mFlushingVideo = SHUTTING_DOWN_DECODER;
347                    }
348                }
349
350                finishFlushIfPossible();
351            } else if (what == ACodec::kWhatOutputFormatChanged) {
352                if (audio) {
353                    int32_t numChannels;
354                    CHECK(codecRequest->findInt32("channel-count", &numChannels));
355
356                    int32_t sampleRate;
357                    CHECK(codecRequest->findInt32("sample-rate", &sampleRate));
358
359                    ALOGV("Audio output format changed to %d Hz, %d channels",
360                         sampleRate, numChannels);
361
362                    mAudioSink->close();
363
364                    audio_output_flags_t flags;
365                    int64_t durationUs;
366                    // FIXME: we should handle the case where the video decoder is created after
367                    // we receive the format change indication. Current code will just make that
368                    // we select deep buffer with video which should not be a problem as it should
369                    // not prevent from keeping A/V sync.
370                    if (mVideoDecoder == NULL &&
371                            mSource->getDuration(&durationUs) == OK &&
372                            durationUs > AUDIO_SINK_MIN_DEEP_BUFFER_DURATION_US) {
373                        flags = AUDIO_OUTPUT_FLAG_DEEP_BUFFER;
374                    } else {
375                        flags = AUDIO_OUTPUT_FLAG_NONE;
376                    }
377
378                    int32_t channelMask;
379                    if (!codecRequest->findInt32("channel-mask", &channelMask)) {
380                        channelMask = CHANNEL_MASK_USE_CHANNEL_ORDER;
381                    }
382
383                    CHECK_EQ(mAudioSink->open(
384                                sampleRate,
385                                numChannels,
386                                (audio_channel_mask_t)channelMask,
387                                AUDIO_FORMAT_PCM_16_BIT,
388                                8 /* bufferCount */,
389                                NULL,
390                                NULL,
391                                flags),
392                             (status_t)OK);
393                    mAudioSink->start();
394
395                    mRenderer->signalAudioSinkChanged();
396                } else {
397                    // video
398
399                    int32_t width, height;
400                    CHECK(codecRequest->findInt32("width", &width));
401                    CHECK(codecRequest->findInt32("height", &height));
402
403                    int32_t cropLeft, cropTop, cropRight, cropBottom;
404                    CHECK(codecRequest->findRect(
405                                "crop",
406                                &cropLeft, &cropTop, &cropRight, &cropBottom));
407
408                    ALOGV("Video output format changed to %d x %d "
409                         "(crop: %d x %d @ (%d, %d))",
410                         width, height,
411                         (cropRight - cropLeft + 1),
412                         (cropBottom - cropTop + 1),
413                         cropLeft, cropTop);
414
415                    notifyListener(
416                            MEDIA_SET_VIDEO_SIZE,
417                            cropRight - cropLeft + 1,
418                            cropBottom - cropTop + 1);
419                }
420            } else if (what == ACodec::kWhatShutdownCompleted) {
421                ALOGV("%s shutdown completed", audio ? "audio" : "video");
422                if (audio) {
423                    mAudioDecoder.clear();
424
425                    CHECK_EQ((int)mFlushingAudio, (int)SHUTTING_DOWN_DECODER);
426                    mFlushingAudio = SHUT_DOWN;
427                } else {
428                    mVideoDecoder.clear();
429
430                    CHECK_EQ((int)mFlushingVideo, (int)SHUTTING_DOWN_DECODER);
431                    mFlushingVideo = SHUT_DOWN;
432                }
433
434                finishFlushIfPossible();
435            } else if (what == ACodec::kWhatError) {
436                ALOGE("Received error from %s decoder, aborting playback.",
437                     audio ? "audio" : "video");
438
439                mRenderer->queueEOS(audio, UNKNOWN_ERROR);
440            } else if (what == ACodec::kWhatDrainThisBuffer) {
441                renderBuffer(audio, codecRequest);
442            } else {
443                ALOGV("Unhandled codec notification %d.", what);
444            }
445
446            break;
447        }
448
449        case kWhatRendererNotify:
450        {
451            int32_t what;
452            CHECK(msg->findInt32("what", &what));
453
454            if (what == Renderer::kWhatEOS) {
455                int32_t audio;
456                CHECK(msg->findInt32("audio", &audio));
457
458                int32_t finalResult;
459                CHECK(msg->findInt32("finalResult", &finalResult));
460
461                if (audio) {
462                    mAudioEOS = true;
463                } else {
464                    mVideoEOS = true;
465                }
466
467                if (finalResult == ERROR_END_OF_STREAM) {
468                    ALOGV("reached %s EOS", audio ? "audio" : "video");
469                } else {
470                    ALOGE("%s track encountered an error (%d)",
471                         audio ? "audio" : "video", finalResult);
472
473                    notifyListener(
474                            MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, finalResult);
475                }
476
477                if ((mAudioEOS || mAudioDecoder == NULL)
478                        && (mVideoEOS || mVideoDecoder == NULL)) {
479                    notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
480                }
481            } else if (what == Renderer::kWhatPosition) {
482                int64_t positionUs;
483                CHECK(msg->findInt64("positionUs", &positionUs));
484
485                CHECK(msg->findInt64("videoLateByUs", &mVideoLateByUs));
486
487                if (mDriver != NULL) {
488                    sp<NuPlayerDriver> driver = mDriver.promote();
489                    if (driver != NULL) {
490                        driver->notifyPosition(positionUs);
491
492                        driver->notifyFrameStats(
493                                mNumFramesTotal, mNumFramesDropped);
494                    }
495                }
496            } else if (what == Renderer::kWhatFlushComplete) {
497                CHECK_EQ(what, (int32_t)Renderer::kWhatFlushComplete);
498
499                int32_t audio;
500                CHECK(msg->findInt32("audio", &audio));
501
502                ALOGV("renderer %s flush completed.", audio ? "audio" : "video");
503            }
504            break;
505        }
506
507        case kWhatMoreDataQueued:
508        {
509            break;
510        }
511
512        case kWhatReset:
513        {
514            ALOGV("kWhatReset");
515
516            if (mRenderer != NULL) {
517                // There's an edge case where the renderer owns all output
518                // buffers and is paused, therefore the decoder will not read
519                // more input data and will never encounter the matching
520                // discontinuity. To avoid this, we resume the renderer.
521
522                if (mFlushingAudio == AWAITING_DISCONTINUITY
523                        || mFlushingVideo == AWAITING_DISCONTINUITY) {
524                    mRenderer->resume();
525                }
526            }
527
528            if (mFlushingAudio != NONE || mFlushingVideo != NONE) {
529                // We're currently flushing, postpone the reset until that's
530                // completed.
531
532                ALOGV("postponing reset mFlushingAudio=%d, mFlushingVideo=%d",
533                      mFlushingAudio, mFlushingVideo);
534
535                mResetPostponed = true;
536                break;
537            }
538
539            if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
540                finishReset();
541                break;
542            }
543
544            mTimeDiscontinuityPending = true;
545
546            if (mAudioDecoder != NULL) {
547                flushDecoder(true /* audio */, true /* needShutdown */);
548            }
549
550            if (mVideoDecoder != NULL) {
551                flushDecoder(false /* audio */, true /* needShutdown */);
552            }
553
554            mResetInProgress = true;
555            break;
556        }
557
558        case kWhatSeek:
559        {
560            int64_t seekTimeUs;
561            CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
562
563            ALOGV("kWhatSeek seekTimeUs=%lld us (%.2f secs)",
564                 seekTimeUs, seekTimeUs / 1E6);
565
566            mSource->seekTo(seekTimeUs);
567
568            if (mDriver != NULL) {
569                sp<NuPlayerDriver> driver = mDriver.promote();
570                if (driver != NULL) {
571                    driver->notifySeekComplete();
572                }
573            }
574
575            break;
576        }
577
578        case kWhatPause:
579        {
580            CHECK(mRenderer != NULL);
581            mRenderer->pause();
582            break;
583        }
584
585        case kWhatResume:
586        {
587            CHECK(mRenderer != NULL);
588            mRenderer->resume();
589            break;
590        }
591
592        default:
593            TRESPASS();
594            break;
595    }
596}
597
598void NuPlayer::finishFlushIfPossible() {
599    if (mFlushingAudio != FLUSHED && mFlushingAudio != SHUT_DOWN) {
600        return;
601    }
602
603    if (mFlushingVideo != FLUSHED && mFlushingVideo != SHUT_DOWN) {
604        return;
605    }
606
607    ALOGV("both audio and video are flushed now.");
608
609    if (mTimeDiscontinuityPending) {
610        mRenderer->signalTimeDiscontinuity();
611        mTimeDiscontinuityPending = false;
612    }
613
614    if (mAudioDecoder != NULL) {
615        mAudioDecoder->signalResume();
616    }
617
618    if (mVideoDecoder != NULL) {
619        mVideoDecoder->signalResume();
620    }
621
622    mFlushingAudio = NONE;
623    mFlushingVideo = NONE;
624
625    if (mResetInProgress) {
626        ALOGV("reset completed");
627
628        mResetInProgress = false;
629        finishReset();
630    } else if (mResetPostponed) {
631        (new AMessage(kWhatReset, id()))->post();
632        mResetPostponed = false;
633    } else if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
634        postScanSources();
635    }
636}
637
638void NuPlayer::finishReset() {
639    CHECK(mAudioDecoder == NULL);
640    CHECK(mVideoDecoder == NULL);
641
642    ++mScanSourcesGeneration;
643    mScanSourcesPending = false;
644
645    mRenderer.clear();
646
647    if (mSource != NULL) {
648        mSource->stop();
649        mSource.clear();
650    }
651
652    if (mDriver != NULL) {
653        sp<NuPlayerDriver> driver = mDriver.promote();
654        if (driver != NULL) {
655            driver->notifyResetComplete();
656        }
657    }
658}
659
660void NuPlayer::postScanSources() {
661    if (mScanSourcesPending) {
662        return;
663    }
664
665    sp<AMessage> msg = new AMessage(kWhatScanSources, id());
666    msg->setInt32("generation", mScanSourcesGeneration);
667    msg->post();
668
669    mScanSourcesPending = true;
670}
671
672status_t NuPlayer::instantiateDecoder(bool audio, sp<Decoder> *decoder) {
673    if (*decoder != NULL) {
674        return OK;
675    }
676
677    sp<MetaData> meta = mSource->getFormat(audio);
678
679    if (meta == NULL) {
680        return -EWOULDBLOCK;
681    }
682
683    if (!audio) {
684        const char *mime;
685        CHECK(meta->findCString(kKeyMIMEType, &mime));
686        mVideoIsAVC = !strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime);
687    }
688
689    sp<AMessage> notify =
690        new AMessage(audio ? kWhatAudioNotify : kWhatVideoNotify,
691                     id());
692
693    *decoder = audio ? new Decoder(notify) :
694                       new Decoder(notify, mNativeWindow);
695    looper()->registerHandler(*decoder);
696
697    (*decoder)->configure(meta);
698
699    int64_t durationUs;
700    if (mDriver != NULL && mSource->getDuration(&durationUs) == OK) {
701        sp<NuPlayerDriver> driver = mDriver.promote();
702        if (driver != NULL) {
703            driver->notifyDuration(durationUs);
704        }
705    }
706
707    return OK;
708}
709
710status_t NuPlayer::feedDecoderInputData(bool audio, const sp<AMessage> &msg) {
711    sp<AMessage> reply;
712    CHECK(msg->findMessage("reply", &reply));
713
714    if ((audio && IsFlushingState(mFlushingAudio))
715            || (!audio && IsFlushingState(mFlushingVideo))) {
716        reply->setInt32("err", INFO_DISCONTINUITY);
717        reply->post();
718        return OK;
719    }
720
721    sp<ABuffer> accessUnit;
722
723    bool dropAccessUnit;
724    do {
725        status_t err = mSource->dequeueAccessUnit(audio, &accessUnit);
726
727        if (err == -EWOULDBLOCK) {
728            return err;
729        } else if (err != OK) {
730            if (err == INFO_DISCONTINUITY) {
731                int32_t type;
732                CHECK(accessUnit->meta()->findInt32("discontinuity", &type));
733
734                bool formatChange =
735                    (audio &&
736                     (type & ATSParser::DISCONTINUITY_AUDIO_FORMAT))
737                    || (!audio &&
738                            (type & ATSParser::DISCONTINUITY_VIDEO_FORMAT));
739
740                bool timeChange = (type & ATSParser::DISCONTINUITY_TIME) != 0;
741
742                ALOGI("%s discontinuity (formatChange=%d, time=%d)",
743                     audio ? "audio" : "video", formatChange, timeChange);
744
745                if (audio) {
746                    mSkipRenderingAudioUntilMediaTimeUs = -1;
747                } else {
748                    mSkipRenderingVideoUntilMediaTimeUs = -1;
749                }
750
751                if (timeChange) {
752                    sp<AMessage> extra;
753                    if (accessUnit->meta()->findMessage("extra", &extra)
754                            && extra != NULL) {
755                        int64_t resumeAtMediaTimeUs;
756                        if (extra->findInt64(
757                                    "resume-at-mediatimeUs", &resumeAtMediaTimeUs)) {
758                            ALOGI("suppressing rendering of %s until %lld us",
759                                    audio ? "audio" : "video", resumeAtMediaTimeUs);
760
761                            if (audio) {
762                                mSkipRenderingAudioUntilMediaTimeUs =
763                                    resumeAtMediaTimeUs;
764                            } else {
765                                mSkipRenderingVideoUntilMediaTimeUs =
766                                    resumeAtMediaTimeUs;
767                            }
768                        }
769                    }
770                }
771
772                mTimeDiscontinuityPending =
773                    mTimeDiscontinuityPending || timeChange;
774
775                if (formatChange || timeChange) {
776                    flushDecoder(audio, formatChange);
777                } else {
778                    // This stream is unaffected by the discontinuity
779
780                    if (audio) {
781                        mFlushingAudio = FLUSHED;
782                    } else {
783                        mFlushingVideo = FLUSHED;
784                    }
785
786                    finishFlushIfPossible();
787
788                    return -EWOULDBLOCK;
789                }
790            }
791
792            reply->setInt32("err", err);
793            reply->post();
794            return OK;
795        }
796
797        if (!audio) {
798            ++mNumFramesTotal;
799        }
800
801        dropAccessUnit = false;
802        if (!audio
803                && mVideoLateByUs > 100000ll
804                && mVideoIsAVC
805                && !IsAVCReferenceFrame(accessUnit)) {
806            dropAccessUnit = true;
807            ++mNumFramesDropped;
808        }
809    } while (dropAccessUnit);
810
811    // ALOGV("returned a valid buffer of %s data", audio ? "audio" : "video");
812
813#if 0
814    int64_t mediaTimeUs;
815    CHECK(accessUnit->meta()->findInt64("timeUs", &mediaTimeUs));
816    ALOGV("feeding %s input buffer at media time %.2f secs",
817         audio ? "audio" : "video",
818         mediaTimeUs / 1E6);
819#endif
820
821    reply->setBuffer("buffer", accessUnit);
822    reply->post();
823
824    return OK;
825}
826
827void NuPlayer::renderBuffer(bool audio, const sp<AMessage> &msg) {
828    // ALOGV("renderBuffer %s", audio ? "audio" : "video");
829
830    sp<AMessage> reply;
831    CHECK(msg->findMessage("reply", &reply));
832
833    if (IsFlushingState(audio ? mFlushingAudio : mFlushingVideo)) {
834        // We're currently attempting to flush the decoder, in order
835        // to complete this, the decoder wants all its buffers back,
836        // so we don't want any output buffers it sent us (from before
837        // we initiated the flush) to be stuck in the renderer's queue.
838
839        ALOGV("we're still flushing the %s decoder, sending its output buffer"
840             " right back.", audio ? "audio" : "video");
841
842        reply->post();
843        return;
844    }
845
846    sp<ABuffer> buffer;
847    CHECK(msg->findBuffer("buffer", &buffer));
848
849    int64_t &skipUntilMediaTimeUs =
850        audio
851            ? mSkipRenderingAudioUntilMediaTimeUs
852            : mSkipRenderingVideoUntilMediaTimeUs;
853
854    if (skipUntilMediaTimeUs >= 0) {
855        int64_t mediaTimeUs;
856        CHECK(buffer->meta()->findInt64("timeUs", &mediaTimeUs));
857
858        if (mediaTimeUs < skipUntilMediaTimeUs) {
859            ALOGV("dropping %s buffer at time %lld as requested.",
860                 audio ? "audio" : "video",
861                 mediaTimeUs);
862
863            reply->post();
864            return;
865        }
866
867        skipUntilMediaTimeUs = -1;
868    }
869
870    mRenderer->queueBuffer(audio, buffer, reply);
871}
872
873void NuPlayer::notifyListener(int msg, int ext1, int ext2) {
874    if (mDriver == NULL) {
875        return;
876    }
877
878    sp<NuPlayerDriver> driver = mDriver.promote();
879
880    if (driver == NULL) {
881        return;
882    }
883
884    driver->notifyListener(msg, ext1, ext2);
885}
886
887void NuPlayer::flushDecoder(bool audio, bool needShutdown) {
888    if ((audio && mAudioDecoder == NULL) || (!audio && mVideoDecoder == NULL)) {
889        ALOGI("flushDecoder %s without decoder present",
890             audio ? "audio" : "video");
891    }
892
893    // Make sure we don't continue to scan sources until we finish flushing.
894    ++mScanSourcesGeneration;
895    mScanSourcesPending = false;
896
897    (audio ? mAudioDecoder : mVideoDecoder)->signalFlush();
898    mRenderer->flush(audio);
899
900    FlushStatus newStatus =
901        needShutdown ? FLUSHING_DECODER_SHUTDOWN : FLUSHING_DECODER;
902
903    if (audio) {
904        CHECK(mFlushingAudio == NONE
905                || mFlushingAudio == AWAITING_DISCONTINUITY);
906
907        mFlushingAudio = newStatus;
908
909        if (mFlushingVideo == NONE) {
910            mFlushingVideo = (mVideoDecoder != NULL)
911                ? AWAITING_DISCONTINUITY
912                : FLUSHED;
913        }
914    } else {
915        CHECK(mFlushingVideo == NONE
916                || mFlushingVideo == AWAITING_DISCONTINUITY);
917
918        mFlushingVideo = newStatus;
919
920        if (mFlushingAudio == NONE) {
921            mFlushingAudio = (mAudioDecoder != NULL)
922                ? AWAITING_DISCONTINUITY
923                : FLUSHED;
924        }
925    }
926}
927
928}  // namespace android
929