NuPlayer.cpp revision 8b71241ce7353731ab75322c46e090ee35014a33 
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                    CHECK_EQ(mAudioSink->open(
379                                sampleRate,
380                                numChannels,
381                                CHANNEL_MASK_USE_CHANNEL_ORDER,
382                                AUDIO_FORMAT_PCM_16_BIT,
383                                8 /* bufferCount */,
384                                NULL,
385                                NULL,
386                                flags),
387                             (status_t)OK);
388                    mAudioSink->start();
389
390                    mRenderer->signalAudioSinkChanged();
391                } else {
392                    // video
393
394                    int32_t width, height;
395                    CHECK(codecRequest->findInt32("width", &width));
396                    CHECK(codecRequest->findInt32("height", &height));
397
398                    int32_t cropLeft, cropTop, cropRight, cropBottom;
399                    CHECK(codecRequest->findRect(
400                                "crop",
401                                &cropLeft, &cropTop, &cropRight, &cropBottom));
402
403                    ALOGV("Video output format changed to %d x %d "
404                         "(crop: %d x %d @ (%d, %d))",
405                         width, height,
406                         (cropRight - cropLeft + 1),
407                         (cropBottom - cropTop + 1),
408                         cropLeft, cropTop);
409
410                    notifyListener(
411                            MEDIA_SET_VIDEO_SIZE,
412                            cropRight - cropLeft + 1,
413                            cropBottom - cropTop + 1);
414                }
415            } else if (what == ACodec::kWhatShutdownCompleted) {
416                ALOGV("%s shutdown completed", audio ? "audio" : "video");
417                if (audio) {
418                    mAudioDecoder.clear();
419
420                    CHECK_EQ((int)mFlushingAudio, (int)SHUTTING_DOWN_DECODER);
421                    mFlushingAudio = SHUT_DOWN;
422                } else {
423                    mVideoDecoder.clear();
424
425                    CHECK_EQ((int)mFlushingVideo, (int)SHUTTING_DOWN_DECODER);
426                    mFlushingVideo = SHUT_DOWN;
427                }
428
429                finishFlushIfPossible();
430            } else if (what == ACodec::kWhatError) {
431                ALOGE("Received error from %s decoder, aborting playback.",
432                     audio ? "audio" : "video");
433
434                mRenderer->queueEOS(audio, UNKNOWN_ERROR);
435            } else if (what == ACodec::kWhatDrainThisBuffer) {
436                renderBuffer(audio, codecRequest);
437            } else {
438                ALOGV("Unhandled codec notification %d.", what);
439            }
440
441            break;
442        }
443
444        case kWhatRendererNotify:
445        {
446            int32_t what;
447            CHECK(msg->findInt32("what", &what));
448
449            if (what == Renderer::kWhatEOS) {
450                int32_t audio;
451                CHECK(msg->findInt32("audio", &audio));
452
453                int32_t finalResult;
454                CHECK(msg->findInt32("finalResult", &finalResult));
455
456                if (audio) {
457                    mAudioEOS = true;
458                } else {
459                    mVideoEOS = true;
460                }
461
462                if (finalResult == ERROR_END_OF_STREAM) {
463                    ALOGV("reached %s EOS", audio ? "audio" : "video");
464                } else {
465                    ALOGE("%s track encountered an error (%d)",
466                         audio ? "audio" : "video", finalResult);
467
468                    notifyListener(
469                            MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, finalResult);
470                }
471
472                if ((mAudioEOS || mAudioDecoder == NULL)
473                        && (mVideoEOS || mVideoDecoder == NULL)) {
474                    notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0);
475                }
476            } else if (what == Renderer::kWhatPosition) {
477                int64_t positionUs;
478                CHECK(msg->findInt64("positionUs", &positionUs));
479
480                CHECK(msg->findInt64("videoLateByUs", &mVideoLateByUs));
481
482                if (mDriver != NULL) {
483                    sp<NuPlayerDriver> driver = mDriver.promote();
484                    if (driver != NULL) {
485                        driver->notifyPosition(positionUs);
486
487                        driver->notifyFrameStats(
488                                mNumFramesTotal, mNumFramesDropped);
489                    }
490                }
491            } else if (what == Renderer::kWhatFlushComplete) {
492                CHECK_EQ(what, (int32_t)Renderer::kWhatFlushComplete);
493
494                int32_t audio;
495                CHECK(msg->findInt32("audio", &audio));
496
497                ALOGV("renderer %s flush completed.", audio ? "audio" : "video");
498            }
499            break;
500        }
501
502        case kWhatMoreDataQueued:
503        {
504            break;
505        }
506
507        case kWhatReset:
508        {
509            ALOGV("kWhatReset");
510
511            if (mRenderer != NULL) {
512                // There's an edge case where the renderer owns all output
513                // buffers and is paused, therefore the decoder will not read
514                // more input data and will never encounter the matching
515                // discontinuity. To avoid this, we resume the renderer.
516
517                if (mFlushingAudio == AWAITING_DISCONTINUITY
518                        || mFlushingVideo == AWAITING_DISCONTINUITY) {
519                    mRenderer->resume();
520                }
521            }
522
523            if (mFlushingAudio != NONE || mFlushingVideo != NONE) {
524                // We're currently flushing, postpone the reset until that's
525                // completed.
526
527                ALOGV("postponing reset mFlushingAudio=%d, mFlushingVideo=%d",
528                      mFlushingAudio, mFlushingVideo);
529
530                mResetPostponed = true;
531                break;
532            }
533
534            if (mAudioDecoder == NULL && mVideoDecoder == NULL) {
535                finishReset();
536                break;
537            }
538
539            mTimeDiscontinuityPending = true;
540
541            if (mAudioDecoder != NULL) {
542                flushDecoder(true /* audio */, true /* needShutdown */);
543            }
544
545            if (mVideoDecoder != NULL) {
546                flushDecoder(false /* audio */, true /* needShutdown */);
547            }
548
549            mResetInProgress = true;
550            break;
551        }
552
553        case kWhatSeek:
554        {
555            int64_t seekTimeUs;
556            CHECK(msg->findInt64("seekTimeUs", &seekTimeUs));
557
558            ALOGV("kWhatSeek seekTimeUs=%lld us (%.2f secs)",
559                 seekTimeUs, seekTimeUs / 1E6);
560
561            mSource->seekTo(seekTimeUs);
562
563            if (mDriver != NULL) {
564                sp<NuPlayerDriver> driver = mDriver.promote();
565                if (driver != NULL) {
566                    driver->notifySeekComplete();
567                }
568            }
569
570            break;
571        }
572
573        case kWhatPause:
574        {
575            CHECK(mRenderer != NULL);
576            mRenderer->pause();
577            break;
578        }
579
580        case kWhatResume:
581        {
582            CHECK(mRenderer != NULL);
583            mRenderer->resume();
584            break;
585        }
586
587        default:
588            TRESPASS();
589            break;
590    }
591}
592
593void NuPlayer::finishFlushIfPossible() {
594    if (mFlushingAudio != FLUSHED && mFlushingAudio != SHUT_DOWN) {
595        return;
596    }
597
598    if (mFlushingVideo != FLUSHED && mFlushingVideo != SHUT_DOWN) {
599        return;
600    }
601
602    ALOGV("both audio and video are flushed now.");
603
604    if (mTimeDiscontinuityPending) {
605        mRenderer->signalTimeDiscontinuity();
606        mTimeDiscontinuityPending = false;
607    }
608
609    if (mAudioDecoder != NULL) {
610        mAudioDecoder->signalResume();
611    }
612
613    if (mVideoDecoder != NULL) {
614        mVideoDecoder->signalResume();
615    }
616
617    mFlushingAudio = NONE;
618    mFlushingVideo = NONE;
619
620    if (mResetInProgress) {
621        ALOGV("reset completed");
622
623        mResetInProgress = false;
624        finishReset();
625    } else if (mResetPostponed) {
626        (new AMessage(kWhatReset, id()))->post();
627        mResetPostponed = false;
628    } else if (mAudioDecoder == NULL || mVideoDecoder == NULL) {
629        postScanSources();
630    }
631}
632
633void NuPlayer::finishReset() {
634    CHECK(mAudioDecoder == NULL);
635    CHECK(mVideoDecoder == NULL);
636
637    ++mScanSourcesGeneration;
638    mScanSourcesPending = false;
639
640    mRenderer.clear();
641
642    if (mSource != NULL) {
643        mSource->stop();
644        mSource.clear();
645    }
646
647    if (mDriver != NULL) {
648        sp<NuPlayerDriver> driver = mDriver.promote();
649        if (driver != NULL) {
650            driver->notifyResetComplete();
651        }
652    }
653}
654
655void NuPlayer::postScanSources() {
656    if (mScanSourcesPending) {
657        return;
658    }
659
660    sp<AMessage> msg = new AMessage(kWhatScanSources, id());
661    msg->setInt32("generation", mScanSourcesGeneration);
662    msg->post();
663
664    mScanSourcesPending = true;
665}
666
667status_t NuPlayer::instantiateDecoder(bool audio, sp<Decoder> *decoder) {
668    if (*decoder != NULL) {
669        return OK;
670    }
671
672    sp<MetaData> meta = mSource->getFormat(audio);
673
674    if (meta == NULL) {
675        return -EWOULDBLOCK;
676    }
677
678    if (!audio) {
679        const char *mime;
680        CHECK(meta->findCString(kKeyMIMEType, &mime));
681        mVideoIsAVC = !strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime);
682    }
683
684    sp<AMessage> notify =
685        new AMessage(audio ? kWhatAudioNotify : kWhatVideoNotify,
686                     id());
687
688    *decoder = audio ? new Decoder(notify) :
689                       new Decoder(notify, mNativeWindow);
690    looper()->registerHandler(*decoder);
691
692    (*decoder)->configure(meta);
693
694    int64_t durationUs;
695    if (mDriver != NULL && mSource->getDuration(&durationUs) == OK) {
696        sp<NuPlayerDriver> driver = mDriver.promote();
697        if (driver != NULL) {
698            driver->notifyDuration(durationUs);
699        }
700    }
701
702    return OK;
703}
704
705status_t NuPlayer::feedDecoderInputData(bool audio, const sp<AMessage> &msg) {
706    sp<AMessage> reply;
707    CHECK(msg->findMessage("reply", &reply));
708
709    if ((audio && IsFlushingState(mFlushingAudio))
710            || (!audio && IsFlushingState(mFlushingVideo))) {
711        reply->setInt32("err", INFO_DISCONTINUITY);
712        reply->post();
713        return OK;
714    }
715
716    sp<ABuffer> accessUnit;
717
718    bool dropAccessUnit;
719    do {
720        status_t err = mSource->dequeueAccessUnit(audio, &accessUnit);
721
722        if (err == -EWOULDBLOCK) {
723            return err;
724        } else if (err != OK) {
725            if (err == INFO_DISCONTINUITY) {
726                int32_t type;
727                CHECK(accessUnit->meta()->findInt32("discontinuity", &type));
728
729                bool formatChange =
730                    (audio &&
731                     (type & ATSParser::DISCONTINUITY_AUDIO_FORMAT))
732                    || (!audio &&
733                            (type & ATSParser::DISCONTINUITY_VIDEO_FORMAT));
734
735                bool timeChange = (type & ATSParser::DISCONTINUITY_TIME) != 0;
736
737                ALOGI("%s discontinuity (formatChange=%d, time=%d)",
738                     audio ? "audio" : "video", formatChange, timeChange);
739
740                if (audio) {
741                    mSkipRenderingAudioUntilMediaTimeUs = -1;
742                } else {
743                    mSkipRenderingVideoUntilMediaTimeUs = -1;
744                }
745
746                if (timeChange) {
747                    sp<AMessage> extra;
748                    if (accessUnit->meta()->findMessage("extra", &extra)
749                            && extra != NULL) {
750                        int64_t resumeAtMediaTimeUs;
751                        if (extra->findInt64(
752                                    "resume-at-mediatimeUs", &resumeAtMediaTimeUs)) {
753                            ALOGI("suppressing rendering of %s until %lld us",
754                                    audio ? "audio" : "video", resumeAtMediaTimeUs);
755
756                            if (audio) {
757                                mSkipRenderingAudioUntilMediaTimeUs =
758                                    resumeAtMediaTimeUs;
759                            } else {
760                                mSkipRenderingVideoUntilMediaTimeUs =
761                                    resumeAtMediaTimeUs;
762                            }
763                        }
764                    }
765                }
766
767                mTimeDiscontinuityPending =
768                    mTimeDiscontinuityPending || timeChange;
769
770                if (formatChange || timeChange) {
771                    flushDecoder(audio, formatChange);
772                } else {
773                    // This stream is unaffected by the discontinuity
774
775                    if (audio) {
776                        mFlushingAudio = FLUSHED;
777                    } else {
778                        mFlushingVideo = FLUSHED;
779                    }
780
781                    finishFlushIfPossible();
782
783                    return -EWOULDBLOCK;
784                }
785            }
786
787            reply->setInt32("err", err);
788            reply->post();
789            return OK;
790        }
791
792        if (!audio) {
793            ++mNumFramesTotal;
794        }
795
796        dropAccessUnit = false;
797        if (!audio
798                && mVideoLateByUs > 100000ll
799                && mVideoIsAVC
800                && !IsAVCReferenceFrame(accessUnit)) {
801            dropAccessUnit = true;
802            ++mNumFramesDropped;
803        }
804    } while (dropAccessUnit);
805
806    // ALOGV("returned a valid buffer of %s data", audio ? "audio" : "video");
807
808#if 0
809    int64_t mediaTimeUs;
810    CHECK(accessUnit->meta()->findInt64("timeUs", &mediaTimeUs));
811    ALOGV("feeding %s input buffer at media time %.2f secs",
812         audio ? "audio" : "video",
813         mediaTimeUs / 1E6);
814#endif
815
816    reply->setBuffer("buffer", accessUnit);
817    reply->post();
818
819    return OK;
820}
821
822void NuPlayer::renderBuffer(bool audio, const sp<AMessage> &msg) {
823    // ALOGV("renderBuffer %s", audio ? "audio" : "video");
824
825    sp<AMessage> reply;
826    CHECK(msg->findMessage("reply", &reply));
827
828    if (IsFlushingState(audio ? mFlushingAudio : mFlushingVideo)) {
829        // We're currently attempting to flush the decoder, in order
830        // to complete this, the decoder wants all its buffers back,
831        // so we don't want any output buffers it sent us (from before
832        // we initiated the flush) to be stuck in the renderer's queue.
833
834        ALOGV("we're still flushing the %s decoder, sending its output buffer"
835             " right back.", audio ? "audio" : "video");
836
837        reply->post();
838        return;
839    }
840
841    sp<ABuffer> buffer;
842    CHECK(msg->findBuffer("buffer", &buffer));
843
844    int64_t &skipUntilMediaTimeUs =
845        audio
846            ? mSkipRenderingAudioUntilMediaTimeUs
847            : mSkipRenderingVideoUntilMediaTimeUs;
848
849    if (skipUntilMediaTimeUs >= 0) {
850        int64_t mediaTimeUs;
851        CHECK(buffer->meta()->findInt64("timeUs", &mediaTimeUs));
852
853        if (mediaTimeUs < skipUntilMediaTimeUs) {
854            ALOGV("dropping %s buffer at time %lld as requested.",
855                 audio ? "audio" : "video",
856                 mediaTimeUs);
857
858            reply->post();
859            return;
860        }
861
862        skipUntilMediaTimeUs = -1;
863    }
864
865    mRenderer->queueBuffer(audio, buffer, reply);
866}
867
868void NuPlayer::notifyListener(int msg, int ext1, int ext2) {
869    if (mDriver == NULL) {
870        return;
871    }
872
873    sp<NuPlayerDriver> driver = mDriver.promote();
874
875    if (driver == NULL) {
876        return;
877    }
878
879    driver->notifyListener(msg, ext1, ext2);
880}
881
882void NuPlayer::flushDecoder(bool audio, bool needShutdown) {
883    if ((audio && mAudioDecoder == NULL) || (!audio && mVideoDecoder == NULL)) {
884        ALOGI("flushDecoder %s without decoder present",
885             audio ? "audio" : "video");
886    }
887
888    // Make sure we don't continue to scan sources until we finish flushing.
889    ++mScanSourcesGeneration;
890    mScanSourcesPending = false;
891
892    (audio ? mAudioDecoder : mVideoDecoder)->signalFlush();
893    mRenderer->flush(audio);
894
895    FlushStatus newStatus =
896        needShutdown ? FLUSHING_DECODER_SHUTDOWN : FLUSHING_DECODER;
897
898    if (audio) {
899        CHECK(mFlushingAudio == NONE
900                || mFlushingAudio == AWAITING_DISCONTINUITY);
901
902        mFlushingAudio = newStatus;
903
904        if (mFlushingVideo == NONE) {
905            mFlushingVideo = (mVideoDecoder != NULL)
906                ? AWAITING_DISCONTINUITY
907                : FLUSHED;
908        }
909    } else {
910        CHECK(mFlushingVideo == NONE
911                || mFlushingVideo == AWAITING_DISCONTINUITY);
912
913        mFlushingVideo = newStatus;
914
915        if (mFlushingAudio == NONE) {
916            mFlushingAudio = (mAudioDecoder != NULL)
917                ? AWAITING_DISCONTINUITY
918                : FLUSHED;
919        }
920    }
921}
922
923}  // namespace android
924