NuPlayer.cpp revision 4110c101c3d0dd8dbc44c8d2d0edd3e2e7d6652f 
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 <media/stagefright/SkipCutBuffer.h>
43#include <gui/ISurfaceTexture.h>
44
45#include "avc_utils.h"
46
47namespace android {
48
49////////////////////////////////////////////////////////////////////////////////
50
51NuPlayer::NuPlayer()
52    : mUIDValid(false),
53      mVideoIsAVC(false),
54      mAudioEOS(false),
55      mVideoEOS(false),
56      mScanSourcesPending(false),
57      mScanSourcesGeneration(0),
58      mTimeDiscontinuityPending(false),
59      mFlushingAudio(NONE),
60      mFlushingVideo(NONE),
61      mResetInProgress(false),
62      mResetPostponed(false),
63      mSkipRenderingAudioUntilMediaTimeUs(-1ll),
64      mSkipRenderingVideoUntilMediaTimeUs(-1ll),
65      mVideoLateByUs(0ll),
66      mNumFramesTotal(0ll),
67      mNumFramesDropped(0ll),
68      mSkipCutBuffer(NULL) {
69}
70
71NuPlayer::~NuPlayer() {
72    delete mSkipCutBuffer;
73    mSkipCutBuffer = NULL;
74}
75
76void NuPlayer::setUID(uid_t uid) {
77    mUIDValid = true;
78    mUID = uid;
79}
80
81void NuPlayer::setDriver(const wp<NuPlayerDriver> &driver) {
82    mDriver = driver;
83}
84
85void NuPlayer::setDataSource(const sp<IStreamSource> &source) {
86    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
87
88    msg->setObject("source", new StreamingSource(source));
89    msg->post();
90}
91
92static bool IsHTTPLiveURL(const char *url) {
93    if (!strncasecmp("http://", url, 7)
94            || !strncasecmp("https://", url, 8)) {
95        size_t len = strlen(url);
96        if (len >= 5 && !strcasecmp(".m3u8", &url[len - 5])) {
97            return true;
98        }
99
100        if (strstr(url,"m3u8")) {
101            return true;
102        }
103    }
104
105    return false;
106}
107
108void NuPlayer::setDataSource(
109        const char *url, const KeyedVector<String8, String8> *headers) {
110    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
111
112    sp<Source> source;
113    if (IsHTTPLiveURL(url)) {
114        source = new HTTPLiveSource(url, headers, mUIDValid, mUID);
115    } else if (!strncasecmp(url, "rtsp://", 7)) {
116        source = new RTSPSource(url, headers, mUIDValid, mUID);
117    } else {
118        source = new GenericSource(url, headers, mUIDValid, mUID);
119    }
120
121    msg->setObject("source", source);
122    msg->post();
123}
124
125void NuPlayer::setDataSource(int fd, int64_t offset, int64_t length) {
126    sp<AMessage> msg = new AMessage(kWhatSetDataSource, id());
127
128    sp<Source> source = new GenericSource(fd, offset, length);
129    msg->setObject("source", source);
130    msg->post();
131}
132
133void NuPlayer::setVideoSurfaceTexture(const sp<ISurfaceTexture> &surfaceTexture) {
134    sp<AMessage> msg = new AMessage(kWhatSetVideoNativeWindow, id());
135    sp<SurfaceTextureClient> surfaceTextureClient(surfaceTexture != NULL ?
136                new SurfaceTextureClient(surfaceTexture) : NULL);
137    msg->setObject("native-window", new NativeWindowWrapper(surfaceTextureClient));
138    msg->post();
139}
140
141void NuPlayer::setAudioSink(const sp<MediaPlayerBase::AudioSink> &sink) {
142    sp<AMessage> msg = new AMessage(kWhatSetAudioSink, id());
143    msg->setObject("sink", sink);
144    msg->post();
145}
146
147void NuPlayer::start() {
148    (new AMessage(kWhatStart, id()))->post();
149}
150
151void NuPlayer::pause() {
152    (new AMessage(kWhatPause, id()))->post();
153}
154
155void NuPlayer::resume() {
156    (new AMessage(kWhatResume, id()))->post();
157}
158
159void NuPlayer::resetAsync() {
160    (new AMessage(kWhatReset, id()))->post();
161}
162
163void NuPlayer::seekToAsync(int64_t seekTimeUs) {
164    sp<AMessage> msg = new AMessage(kWhatSeek, id());
165    msg->setInt64("seekTimeUs", seekTimeUs);
166    msg->post();
167}
168
169// static
170bool NuPlayer::IsFlushingState(FlushStatus state, bool *needShutdown) {
171    switch (state) {
172        case FLUSHING_DECODER:
173            if (needShutdown != NULL) {
174                *needShutdown = false;
175            }
176            return true;
177
178        case FLUSHING_DECODER_SHUTDOWN:
179            if (needShutdown != NULL) {
180                *needShutdown = true;
181            }
182            return true;
183
184        default:
185            return false;
186    }
187}
188
189void NuPlayer::onMessageReceived(const sp<AMessage> &msg) {
190    switch (msg->what()) {
191        case kWhatSetDataSource:
192        {
193            ALOGV("kWhatSetDataSource");
194
195            CHECK(mSource == NULL);
196
197            sp<RefBase> obj;
198            CHECK(msg->findObject("source", &obj));
199
200            mSource = static_cast<Source *>(obj.get());
201            break;
202        }
203
204        case kWhatSetVideoNativeWindow:
205        {
206            ALOGV("kWhatSetVideoNativeWindow");
207
208            sp<RefBase> obj;
209            CHECK(msg->findObject("native-window", &obj));
210
211            mNativeWindow = static_cast<NativeWindowWrapper *>(obj.get());
212            break;
213        }
214
215        case kWhatSetAudioSink:
216        {
217            ALOGV("kWhatSetAudioSink");
218
219            sp<RefBase> obj;
220            CHECK(msg->findObject("sink", &obj));
221
222            mAudioSink = static_cast<MediaPlayerBase::AudioSink *>(obj.get());
223            break;
224        }
225
226        case kWhatStart:
227        {
228            ALOGV("kWhatStart");
229
230            mVideoIsAVC = false;
231            mAudioEOS = false;
232            mVideoEOS = false;
233            mSkipRenderingAudioUntilMediaTimeUs = -1;
234            mSkipRenderingVideoUntilMediaTimeUs = -1;
235            mVideoLateByUs = 0;
236            mNumFramesTotal = 0;
237            mNumFramesDropped = 0;
238
239            mSource->start();
240
241            sp<MetaData> meta = mSource->getFormat(true /* audio */);
242            if (meta != NULL) {
243                int32_t delay = 0;
244                if (!meta->findInt32(kKeyEncoderDelay, &delay)) {
245                    delay = 0;
246                }
247                int32_t padding = 0;
248                if (!meta->findInt32(kKeyEncoderPadding, &padding)) {
249                    padding = 0;
250                }
251                int32_t numchannels = 0;
252                if (delay + padding) {
253                    if (meta->findInt32(kKeyChannelCount, &numchannels)) {
254                        size_t frameSize = numchannels * sizeof(int16_t);
255                        if (mSkipCutBuffer) {
256                            size_t prevbuffersize = mSkipCutBuffer->size();
257                            if (prevbuffersize != 0) {
258                                ALOGW("Replacing SkipCutBuffer holding %d bytes", prevbuffersize);
259                            }
260                            delete mSkipCutBuffer;
261                        }
262                        mSkipCutBuffer = new SkipCutBuffer(delay * frameSize, padding * frameSize);
263                    }
264                }
265            }
266
267            mRenderer = new Renderer(
268                    mAudioSink,
269                    new AMessage(kWhatRendererNotify, id()));
270
271            looper()->registerHandler(mRenderer);
272
273            postScanSources();
274            break;
275        }
276
277        case kWhatScanSources:
278        {
279            int32_t generation;
280            CHECK(msg->findInt32("generation", &generation));
281            if (generation != mScanSourcesGeneration) {
282                // Drop obsolete msg.
283                break;
284            }
285
286            mScanSourcesPending = false;
287
288            ALOGV("scanning sources haveAudio=%d, haveVideo=%d",
289                 mAudioDecoder != NULL, mVideoDecoder != NULL);
290
291            instantiateDecoder(false, &mVideoDecoder);
292
293            if (mAudioSink != NULL) {
294                instantiateDecoder(true, &mAudioDecoder);
295            }
296
297            status_t err;
298            if ((err = mSource->feedMoreTSData()) != OK) {
299                if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
300                    // We're not currently decoding anything (no audio or
301                    // video tracks found) and we just ran out of input data.
302
303                    if (err == ERROR_END_OF_STREAM) {
304                        notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
305                    } else {
306                        notifyListener(MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, err);
307                    }
308                }
309                break;
310            }
311
312            if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
313                msg->post(100000ll);
314                mScanSourcesPending = true;
315            }
316            break;
317        }
318
319        case kWhatVideoNotify:
320        case kWhatAudioNotify:
321        {
322            bool audio = msg->what() == kWhatAudioNotify;
323
324            sp<AMessage> codecRequest;
325            CHECK(msg->findMessage("codec-request", &codecRequest));
326
327            int32_t what;
328            CHECK(codecRequest->findInt32("what", &what));
329
330            if (what == ACodec::kWhatFillThisBuffer) {
331                status_t err = feedDecoderInputData(
332                        audio, codecRequest);
333
334                if (err == -EWOULDBLOCK) {
335                    if (mSource->feedMoreTSData() == OK) {
336                        msg->post(10000ll);
337                    }
338                }
339            } else if (what == ACodec::kWhatEOS) {
340                int32_t err;
341                CHECK(codecRequest->findInt32("err", &err));
342
343                if (err == ERROR_END_OF_STREAM) {
344                    ALOGV("got %s decoder EOS", audio ? "audio" : "video");
345                } else {
346                    ALOGV("got %s decoder EOS w/ error %d",
347                         audio ? "audio" : "video",
348                         err);
349                }
350
351                mRenderer->queueEOS(audio, err);
352            } else if (what == ACodec::kWhatFlushCompleted) {
353                bool needShutdown;
354
355                if (audio) {
356                    CHECK(IsFlushingState(mFlushingAudio, &needShutdown));
357                    mFlushingAudio = FLUSHED;
358                } else {
359                    CHECK(IsFlushingState(mFlushingVideo, &needShutdown));
360                    mFlushingVideo = FLUSHED;
361
362                    mVideoLateByUs = 0;
363                }
364
365                ALOGV("decoder %s flush completed", audio ? "audio" : "video");
366
367                if (needShutdown) {
368                    ALOGV("initiating %s decoder shutdown",
369                         audio ? "audio" : "video");
370
371                    (audio ? mAudioDecoder : mVideoDecoder)->initiateShutdown();
372
373                    if (audio) {
374                        mFlushingAudio = SHUTTING_DOWN_DECODER;
375                    } else {
376                        mFlushingVideo = SHUTTING_DOWN_DECODER;
377                    }
378                }
379
380                finishFlushIfPossible();
381            } else if (what == ACodec::kWhatOutputFormatChanged) {
382                if (audio) {
383                    int32_t numChannels;
384                    CHECK(codecRequest->findInt32("channel-count", &numChannels));
385
386                    int32_t sampleRate;
387                    CHECK(codecRequest->findInt32("sample-rate", &sampleRate));
388
389                    ALOGV("Audio output format changed to %d Hz, %d channels",
390                         sampleRate, numChannels);
391
392                    mAudioSink->close();
393                    CHECK_EQ(mAudioSink->open(
394                                sampleRate,
395                                numChannels,
396                                CHANNEL_MASK_USE_CHANNEL_ORDER,
397                                AUDIO_FORMAT_PCM_16_BIT,
398                                8 /* bufferCount */),
399                             (status_t)OK);
400                    mAudioSink->start();
401
402                    mRenderer->signalAudioSinkChanged();
403                } else {
404                    // video
405
406                    int32_t width, height;
407                    CHECK(codecRequest->findInt32("width", &width));
408                    CHECK(codecRequest->findInt32("height", &height));
409
410                    int32_t cropLeft, cropTop, cropRight, cropBottom;
411                    CHECK(codecRequest->findRect(
412                                "crop",
413                                &cropLeft, &cropTop, &cropRight, &cropBottom));
414
415                    ALOGV("Video output format changed to %d x %d "
416                         "(crop: %d x %d @ (%d, %d))",
417                         width, height,
418                         (cropRight - cropLeft + 1),
419                         (cropBottom - cropTop + 1),
420                         cropLeft, cropTop);
421
422                    notifyListener(
423                            MEDIA_SET_VIDEO_SIZE,
424                            cropRight - cropLeft + 1,
425                            cropBottom - cropTop + 1);
426                }
427            } else if (what == ACodec::kWhatShutdownCompleted) {
428                ALOGV("%s shutdown completed", audio ? "audio" : "video");
429                if (audio) {
430                    mAudioDecoder.clear();
431
432                    CHECK_EQ((int)mFlushingAudio, (int)SHUTTING_DOWN_DECODER);
433                    mFlushingAudio = SHUT_DOWN;
434                } else {
435                    mVideoDecoder.clear();
436
437                    CHECK_EQ((int)mFlushingVideo, (int)SHUTTING_DOWN_DECODER);
438                    mFlushingVideo = SHUT_DOWN;
439                }
440
441                finishFlushIfPossible();
442            } else if (what == ACodec::kWhatError) {
443                ALOGE("Received error from %s decoder, aborting playback.",
444                     audio ? "audio" : "video");
445
446                mRenderer->queueEOS(audio, UNKNOWN_ERROR);
447            } else if (what == ACodec::kWhatDrainThisBuffer) {
448                renderBuffer(audio, codecRequest);
449            } else {
450                ALOGV("Unhandled codec notification %d.", what);
451            }
452
453            break;
454        }
455
456        case kWhatRendererNotify:
457        {
458            int32_t what;
459            CHECK(msg->findInt32("what", &what));
460
461            if (what == Renderer::kWhatEOS) {
462                int32_t audio;
463                CHECK(msg->findInt32("audio", &audio));
464
465                int32_t finalResult;
466                CHECK(msg->findInt32("finalResult", &finalResult));
467
468                if (audio) {
469                    mAudioEOS = true;
470                } else {
471                    mVideoEOS = true;
472                }
473
474                if (finalResult == ERROR_END_OF_STREAM) {
475                    ALOGV("reached %s EOS", audio ? "audio" : "video");
476                } else {
477                    ALOGE("%s track encountered an error (%d)",
478                         audio ? "audio" : "video", finalResult);
479
480                    notifyListener(
481                            MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, finalResult);
482                }
483
484                if ((mAudioEOS || mAudioDecoder == NULL)
485                        && (mVideoEOS || mVideoDecoder == NULL)) {
486                    notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
487                }
488            } else if (what == Renderer::kWhatPosition) {
489                int64_t positionUs;
490                CHECK(msg->findInt64("positionUs", &positionUs));
491
492                CHECK(msg->findInt64("videoLateByUs", &mVideoLateByUs));
493
494                if (mDriver != NULL) {
495                    sp<NuPlayerDriver> driver = mDriver.promote();
496                    if (driver != NULL) {
497                        driver->notifyPosition(positionUs);
498
499                        driver->notifyFrameStats(
500                                mNumFramesTotal, mNumFramesDropped);
501                    }
502                }
503            } else if (what == Renderer::kWhatFlushComplete) {
504                CHECK_EQ(what, (int32_t)Renderer::kWhatFlushComplete);
505
506                int32_t audio;
507                CHECK(msg->findInt32("audio", &audio));
508
509                ALOGV("renderer %s flush completed.", audio ? "audio" : "video");
510            }
511            break;
512        }
513
514        case kWhatMoreDataQueued:
515        {
516            break;
517        }
518
519        case kWhatReset:
520        {
521            ALOGV("kWhatReset");
522
523            if (mRenderer != NULL) {
524                // There's an edge case where the renderer owns all output
525                // buffers and is paused, therefore the decoder will not read
526                // more input data and will never encounter the matching
527                // discontinuity. To avoid this, we resume the renderer.
528
529                if (mFlushingAudio == AWAITING_DISCONTINUITY
530                        || mFlushingVideo == AWAITING_DISCONTINUITY) {
531                    mRenderer->resume();
532                }
533            }
534
535            if (mFlushingAudio != NONE || mFlushingVideo != NONE) {
536                // We're currently flushing, postpone the reset until that's
537                // completed.
538
539                ALOGV("postponing reset mFlushingAudio=%d, mFlushingVideo=%d",
540                      mFlushingAudio, mFlushingVideo);
541
542                mResetPostponed = true;
543                break;
544            }
545
546            if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
547                finishReset();
548                break;
549            }
550
551            mTimeDiscontinuityPending = true;
552
553            if (mAudioDecoder != NULL) {
554                flushDecoder(true /* audio */, true /* needShutdown */);
555            }
556
557            if (mVideoDecoder != NULL) {
558                flushDecoder(false /* audio */, true /* needShutdown */);
559            }
560
561            mResetInProgress = true;
562            break;
563        }
564
565        case kWhatSeek:
566        {
567            int64_t seekTimeUs;
568            CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
569
570            ALOGV("kWhatSeek seekTimeUs=%lld us (%.2f secs)",
571                 seekTimeUs, seekTimeUs / 1E6);
572
573            mSource->seekTo(seekTimeUs);
574
575            if (mDriver != NULL) {
576                sp<NuPlayerDriver> driver = mDriver.promote();
577                if (driver != NULL) {
578                    driver->notifySeekComplete();
579                }
580            }
581
582            break;
583        }
584
585        case kWhatPause:
586        {
587            CHECK(mRenderer != NULL);
588            mRenderer->pause();
589            break;
590        }
591
592        case kWhatResume:
593        {
594            CHECK(mRenderer != NULL);
595            mRenderer->resume();
596            break;
597        }
598
599        default:
600            TRESPASS();
601            break;
602    }
603}
604
605void NuPlayer::finishFlushIfPossible() {
606    if (mFlushingAudio != FLUSHED && mFlushingAudio != SHUT_DOWN) {
607        return;
608    }
609
610    if (mFlushingVideo != FLUSHED && mFlushingVideo != SHUT_DOWN) {
611        return;
612    }
613
614    ALOGV("both audio and video are flushed now.");
615
616    if (mTimeDiscontinuityPending) {
617        mRenderer->signalTimeDiscontinuity();
618        mTimeDiscontinuityPending = false;
619    }
620
621    if (mAudioDecoder != NULL) {
622        mAudioDecoder->signalResume();
623    }
624
625    if (mVideoDecoder != NULL) {
626        mVideoDecoder->signalResume();
627    }
628
629    mFlushingAudio = NONE;
630    mFlushingVideo = NONE;
631
632    if (mResetInProgress) {
633        ALOGV("reset completed");
634
635        mResetInProgress = false;
636        finishReset();
637    } else if (mResetPostponed) {
638        (new AMessage(kWhatReset, id()))->post();
639        mResetPostponed = false;
640    } else if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
641        postScanSources();
642    }
643}
644
645void NuPlayer::finishReset() {
646    CHECK(mAudioDecoder == NULL);
647    CHECK(mVideoDecoder == NULL);
648
649    ++mScanSourcesGeneration;
650    mScanSourcesPending = false;
651
652    mRenderer.clear();
653
654    if (mSource != NULL) {
655        mSource->stop();
656        mSource.clear();
657    }
658
659    if (mDriver != NULL) {
660        sp<NuPlayerDriver> driver = mDriver.promote();
661        if (driver != NULL) {
662            driver->notifyResetComplete();
663        }
664    }
665}
666
667void NuPlayer::postScanSources() {
668    if (mScanSourcesPending) {
669        return;
670    }
671
672    sp<AMessage> msg = new AMessage(kWhatScanSources, id());
673    msg->setInt32("generation", mScanSourcesGeneration);
674    msg->post();
675
676    mScanSourcesPending = true;
677}
678
679status_t NuPlayer::instantiateDecoder(bool audio, sp<Decoder> *decoder) {
680    if (*decoder != NULL) {
681        return OK;
682    }
683
684    sp<MetaData> meta = mSource->getFormat(audio);
685
686    if (meta == NULL) {
687        return -EWOULDBLOCK;
688    }
689
690    if (!audio) {
691        const char *mime;
692        CHECK(meta->findCString(kKeyMIMEType, &mime));
693        mVideoIsAVC = !strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime);
694    }
695
696    sp<AMessage> notify =
697        new AMessage(audio ? kWhatAudioNotify : kWhatVideoNotify,
698                     id());
699
700    *decoder = audio ? new Decoder(notify) :
701                       new Decoder(notify, mNativeWindow);
702    looper()->registerHandler(*decoder);
703
704    (*decoder)->configure(meta);
705
706    int64_t durationUs;
707    if (mDriver != NULL && mSource->getDuration(&durationUs) == OK) {
708        sp<NuPlayerDriver> driver = mDriver.promote();
709        if (driver != NULL) {
710            driver->notifyDuration(durationUs);
711        }
712    }
713
714    return OK;
715}
716
717status_t NuPlayer::feedDecoderInputData(bool audio, const sp<AMessage> &msg) {
718    sp<AMessage> reply;
719    CHECK(msg->findMessage("reply", &reply));
720
721    if ((audio && IsFlushingState(mFlushingAudio))
722            || (!audio && IsFlushingState(mFlushingVideo))) {
723        reply->setInt32("err", INFO_DISCONTINUITY);
724        reply->post();
725        return OK;
726    }
727
728    sp<ABuffer> accessUnit;
729
730    bool dropAccessUnit;
731    do {
732        status_t err = mSource->dequeueAccessUnit(audio, &accessUnit);
733
734        if (err == -EWOULDBLOCK) {
735            return err;
736        } else if (err != OK) {
737            if (err == INFO_DISCONTINUITY) {
738                int32_t type;
739                CHECK(accessUnit->meta()->findInt32("discontinuity", &type));
740
741                bool formatChange =
742                    (audio &&
743                     (type & ATSParser::DISCONTINUITY_AUDIO_FORMAT))
744                    || (!audio &&
745                            (type & ATSParser::DISCONTINUITY_VIDEO_FORMAT));
746
747                bool timeChange = (type & ATSParser::DISCONTINUITY_TIME) != 0;
748
749                ALOGI("%s discontinuity (formatChange=%d, time=%d)",
750                     audio ? "audio" : "video", formatChange, timeChange);
751
752                if (audio) {
753                    mSkipRenderingAudioUntilMediaTimeUs = -1;
754                } else {
755                    mSkipRenderingVideoUntilMediaTimeUs = -1;
756                }
757
758                if (timeChange) {
759                    sp<AMessage> extra;
760                    if (accessUnit->meta()->findMessage("extra", &extra)
761                            && extra != NULL) {
762                        int64_t resumeAtMediaTimeUs;
763                        if (extra->findInt64(
764                                    "resume-at-mediatimeUs", &resumeAtMediaTimeUs)) {
765                            ALOGI("suppressing rendering of %s until %lld us",
766                                    audio ? "audio" : "video", resumeAtMediaTimeUs);
767
768                            if (audio) {
769                                mSkipRenderingAudioUntilMediaTimeUs =
770                                    resumeAtMediaTimeUs;
771                            } else {
772                                mSkipRenderingVideoUntilMediaTimeUs =
773                                    resumeAtMediaTimeUs;
774                            }
775                        }
776                    }
777                }
778
779                mTimeDiscontinuityPending =
780                    mTimeDiscontinuityPending || timeChange;
781
782                if (formatChange || timeChange) {
783                    flushDecoder(audio, formatChange);
784                } else {
785                    // This stream is unaffected by the discontinuity
786
787                    if (audio) {
788                        mFlushingAudio = FLUSHED;
789                    } else {
790                        mFlushingVideo = FLUSHED;
791                    }
792
793                    finishFlushIfPossible();
794
795                    return -EWOULDBLOCK;
796                }
797            }
798
799            reply->setInt32("err", err);
800            reply->post();
801            return OK;
802        }
803
804        if (!audio) {
805            ++mNumFramesTotal;
806        }
807
808        dropAccessUnit = false;
809        if (!audio
810                && mVideoLateByUs > 100000ll
811                && mVideoIsAVC
812                && !IsAVCReferenceFrame(accessUnit)) {
813            dropAccessUnit = true;
814            ++mNumFramesDropped;
815        }
816    } while (dropAccessUnit);
817
818    // ALOGV("returned a valid buffer of %s data", audio ? "audio" : "video");
819
820#if 0
821    int64_t mediaTimeUs;
822    CHECK(accessUnit->meta()->findInt64("timeUs", &mediaTimeUs));
823    ALOGV("feeding %s input buffer at media time %.2f secs",
824         audio ? "audio" : "video",
825         mediaTimeUs / 1E6);
826#endif
827
828    reply->setBuffer("buffer", accessUnit);
829    reply->post();
830
831    return OK;
832}
833
834void NuPlayer::renderBuffer(bool audio, const sp<AMessage> &msg) {
835    // ALOGV("renderBuffer %s", audio ? "audio" : "video");
836
837    sp<AMessage> reply;
838    CHECK(msg->findMessage("reply", &reply));
839
840    if (IsFlushingState(audio ? mFlushingAudio : mFlushingVideo)) {
841        // We're currently attempting to flush the decoder, in order
842        // to complete this, the decoder wants all its buffers back,
843        // so we don't want any output buffers it sent us (from before
844        // we initiated the flush) to be stuck in the renderer's queue.
845
846        ALOGV("we're still flushing the %s decoder, sending its output buffer"
847             " right back.", audio ? "audio" : "video");
848
849        reply->post();
850        return;
851    }
852
853    sp<ABuffer> buffer;
854    CHECK(msg->findBuffer("buffer", &buffer));
855
856    int64_t &skipUntilMediaTimeUs =
857        audio
858            ? mSkipRenderingAudioUntilMediaTimeUs
859            : mSkipRenderingVideoUntilMediaTimeUs;
860
861    if (skipUntilMediaTimeUs >= 0) {
862        int64_t mediaTimeUs;
863        CHECK(buffer->meta()->findInt64("timeUs", &mediaTimeUs));
864
865        if (mediaTimeUs < skipUntilMediaTimeUs) {
866            ALOGV("dropping %s buffer at time %lld as requested.",
867                 audio ? "audio" : "video",
868                 mediaTimeUs);
869
870            reply->post();
871            return;
872        }
873
874        skipUntilMediaTimeUs = -1;
875    }
876
877    if (audio && mSkipCutBuffer) {
878        mSkipCutBuffer->submit(buffer);
879    }
880
881    mRenderer->queueBuffer(audio, buffer, reply);
882}
883
884void NuPlayer::notifyListener(int msg, int ext1, int ext2) {
885    if (mDriver == NULL) {
886        return;
887    }
888
889    sp<NuPlayerDriver> driver = mDriver.promote();
890
891    if (driver == NULL) {
892        return;
893    }
894
895    driver->notifyListener(msg, ext1, ext2);
896}
897
898void NuPlayer::flushDecoder(bool audio, bool needShutdown) {
899    if ((audio && mAudioDecoder == NULL) || (!audio && mVideoDecoder == NULL)) {
900        ALOGI("flushDecoder %s without decoder present",
901             audio ? "audio" : "video");
902    }
903
904    // Make sure we don't continue to scan sources until we finish flushing.
905    ++mScanSourcesGeneration;
906    mScanSourcesPending = false;
907
908    (audio ? mAudioDecoder : mVideoDecoder)->signalFlush();
909    mRenderer->flush(audio);
910
911    FlushStatus newStatus =
912        needShutdown ? FLUSHING_DECODER_SHUTDOWN : FLUSHING_DECODER;
913
914    if (audio) {
915        CHECK(mFlushingAudio == NONE
916                || mFlushingAudio == AWAITING_DISCONTINUITY);
917
918        mFlushingAudio = newStatus;
919
920        if (mFlushingVideo == NONE) {
921            mFlushingVideo = (mVideoDecoder != NULL)
922                ? AWAITING_DISCONTINUITY
923                : FLUSHED;
924        }
925    } else {
926        CHECK(mFlushingVideo == NONE
927                || mFlushingVideo == AWAITING_DISCONTINUITY);
928
929        mFlushingVideo = newStatus;
930
931        if (mFlushingAudio == NONE) {
932            mFlushingAudio = (mAudioDecoder != NULL)
933                ? AWAITING_DISCONTINUITY
934                : FLUSHED;
935        }
936    }
937}
938
939}  // namespace android
940