NuPlayer.cpp revision dc9bacd838442a524585887e6ea6696836be2eda
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 "StreamingSource.h" 29 30#include "ATSParser.h" 31 32#include <media/stagefright/foundation/hexdump.h> 33#include <media/stagefright/foundation/ABuffer.h> 34#include <media/stagefright/foundation/ADebug.h> 35#include <media/stagefright/foundation/AMessage.h> 36#include <media/stagefright/ACodec.h> 37#include <media/stagefright/MediaDefs.h> 38#include <media/stagefright/MediaErrors.h> 39#include <media/stagefright/MetaData.h> 40#include <surfaceflinger/Surface.h> 41#include <gui/ISurfaceTexture.h> 42 43#include "avc_utils.h" 44 45namespace android { 46 47//////////////////////////////////////////////////////////////////////////////// 48 49NuPlayer::NuPlayer() 50 : mUIDValid(false), 51 mVideoIsAVC(false), 52 mAudioEOS(false), 53 mVideoEOS(false), 54 mScanSourcesPending(false), 55 mScanSourcesGeneration(0), 56 mFlushingAudio(NONE), 57 mFlushingVideo(NONE), 58 mResetInProgress(false), 59 mResetPostponed(false), 60 mSkipRenderingAudioUntilMediaTimeUs(-1ll), 61 mSkipRenderingVideoUntilMediaTimeUs(-1ll), 62 mVideoLateByUs(0ll), 63 mNumFramesTotal(0ll), 64 mNumFramesDropped(0ll) { 65} 66 67NuPlayer::~NuPlayer() { 68} 69 70void NuPlayer::setUID(uid_t uid) { 71 mUIDValid = true; 72 mUID = uid; 73} 74 75void NuPlayer::setDriver(const wp<NuPlayerDriver> &driver) { 76 mDriver = driver; 77} 78 79void NuPlayer::setDataSource(const sp<IStreamSource> &source) { 80 sp<AMessage> msg = new AMessage(kWhatSetDataSource, id()); 81 82 msg->setObject("source", new StreamingSource(source)); 83 msg->post(); 84} 85 86void NuPlayer::setDataSource( 87 const char *url, const KeyedVector<String8, String8> *headers) { 88 sp<AMessage> msg = new AMessage(kWhatSetDataSource, id()); 89 90 msg->setObject("source", new HTTPLiveSource(url, headers, mUIDValid, mUID)); 91 msg->post(); 92} 93 94void NuPlayer::setVideoSurface(const sp<Surface> &surface) { 95 sp<AMessage> msg = new AMessage(kWhatSetVideoNativeWindow, id()); 96 msg->setObject("native-window", new NativeWindowWrapper(surface)); 97 msg->post(); 98} 99 100void NuPlayer::setVideoSurfaceTexture(const sp<ISurfaceTexture> &surfaceTexture) { 101 sp<AMessage> msg = new AMessage(kWhatSetVideoNativeWindow, id()); 102 sp<SurfaceTextureClient> surfaceTextureClient(surfaceTexture != NULL ? 103 new SurfaceTextureClient(surfaceTexture) : NULL); 104 msg->setObject("native-window", new NativeWindowWrapper(surfaceTextureClient)); 105 msg->post(); 106} 107 108void NuPlayer::setAudioSink(const sp<MediaPlayerBase::AudioSink> &sink) { 109 sp<AMessage> msg = new AMessage(kWhatSetAudioSink, id()); 110 msg->setObject("sink", sink); 111 msg->post(); 112} 113 114void NuPlayer::start() { 115 (new AMessage(kWhatStart, id()))->post(); 116} 117 118void NuPlayer::pause() { 119 (new AMessage(kWhatPause, id()))->post(); 120} 121 122void NuPlayer::resume() { 123 (new AMessage(kWhatResume, id()))->post(); 124} 125 126void NuPlayer::resetAsync() { 127 (new AMessage(kWhatReset, id()))->post(); 128} 129 130void NuPlayer::seekToAsync(int64_t seekTimeUs) { 131 sp<AMessage> msg = new AMessage(kWhatSeek, id()); 132 msg->setInt64("seekTimeUs", seekTimeUs); 133 msg->post(); 134} 135 136// static 137bool NuPlayer::IsFlushingState(FlushStatus state, bool *needShutdown) { 138 switch (state) { 139 case FLUSHING_DECODER: 140 if (needShutdown != NULL) { 141 *needShutdown = false; 142 } 143 return true; 144 145 case FLUSHING_DECODER_SHUTDOWN: 146 if (needShutdown != NULL) { 147 *needShutdown = true; 148 } 149 return true; 150 151 default: 152 return false; 153 } 154} 155 156void NuPlayer::onMessageReceived(const sp<AMessage> &msg) { 157 switch (msg->what()) { 158 case kWhatSetDataSource: 159 { 160 LOGV("kWhatSetDataSource"); 161 162 CHECK(mSource == NULL); 163 164 sp<RefBase> obj; 165 CHECK(msg->findObject("source", &obj)); 166 167 mSource = static_cast<Source *>(obj.get()); 168 break; 169 } 170 171 case kWhatSetVideoNativeWindow: 172 { 173 LOGV("kWhatSetVideoNativeWindow"); 174 175 sp<RefBase> obj; 176 CHECK(msg->findObject("native-window", &obj)); 177 178 mNativeWindow = static_cast<NativeWindowWrapper *>(obj.get()); 179 break; 180 } 181 182 case kWhatSetAudioSink: 183 { 184 LOGV("kWhatSetAudioSink"); 185 186 sp<RefBase> obj; 187 CHECK(msg->findObject("sink", &obj)); 188 189 mAudioSink = static_cast<MediaPlayerBase::AudioSink *>(obj.get()); 190 break; 191 } 192 193 case kWhatStart: 194 { 195 LOGV("kWhatStart"); 196 197 mVideoIsAVC = false; 198 mAudioEOS = false; 199 mVideoEOS = false; 200 mSkipRenderingAudioUntilMediaTimeUs = -1; 201 mSkipRenderingVideoUntilMediaTimeUs = -1; 202 mVideoLateByUs = 0; 203 mNumFramesTotal = 0; 204 mNumFramesDropped = 0; 205 206 mSource->start(); 207 208 mRenderer = new Renderer( 209 mAudioSink, 210 new AMessage(kWhatRendererNotify, id())); 211 212 looper()->registerHandler(mRenderer); 213 214 postScanSources(); 215 break; 216 } 217 218 case kWhatScanSources: 219 { 220 int32_t generation; 221 CHECK(msg->findInt32("generation", &generation)); 222 if (generation != mScanSourcesGeneration) { 223 // Drop obsolete msg. 224 break; 225 } 226 227 mScanSourcesPending = false; 228 229 LOGV("scanning sources haveAudio=%d, haveVideo=%d", 230 mAudioDecoder != NULL, mVideoDecoder != NULL); 231 232 instantiateDecoder(false, &mVideoDecoder); 233 234 if (mAudioSink != NULL) { 235 instantiateDecoder(true, &mAudioDecoder); 236 } 237 238 if (!mSource->feedMoreTSData()) { 239 if (mAudioDecoder == NULL && mVideoDecoder == NULL) { 240 // We're not currently decoding anything (no audio or 241 // video tracks found) and we just ran out of input data. 242 notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0); 243 } 244 break; 245 } 246 247 if (mAudioDecoder == NULL || mVideoDecoder == NULL) { 248 msg->post(100000ll); 249 mScanSourcesPending = true; 250 } 251 break; 252 } 253 254 case kWhatVideoNotify: 255 case kWhatAudioNotify: 256 { 257 bool audio = msg->what() == kWhatAudioNotify; 258 259 sp<AMessage> codecRequest; 260 CHECK(msg->findMessage("codec-request", &codecRequest)); 261 262 int32_t what; 263 CHECK(codecRequest->findInt32("what", &what)); 264 265 if (what == ACodec::kWhatFillThisBuffer) { 266 status_t err = feedDecoderInputData( 267 audio, codecRequest); 268 269 if (err == -EWOULDBLOCK) { 270 if (mSource->feedMoreTSData()) { 271 msg->post(); 272 } 273 } 274 } else if (what == ACodec::kWhatEOS) { 275 int32_t err; 276 CHECK(codecRequest->findInt32("err", &err)); 277 278 if (err == ERROR_END_OF_STREAM) { 279 LOGV("got %s decoder EOS", audio ? "audio" : "video"); 280 } else { 281 LOGV("got %s decoder EOS w/ error %d", 282 audio ? "audio" : "video", 283 err); 284 } 285 286 mRenderer->queueEOS(audio, err); 287 } else if (what == ACodec::kWhatFlushCompleted) { 288 bool needShutdown; 289 290 if (audio) { 291 CHECK(IsFlushingState(mFlushingAudio, &needShutdown)); 292 mFlushingAudio = FLUSHED; 293 } else { 294 CHECK(IsFlushingState(mFlushingVideo, &needShutdown)); 295 mFlushingVideo = FLUSHED; 296 297 mVideoLateByUs = 0; 298 } 299 300 LOGV("decoder %s flush completed", audio ? "audio" : "video"); 301 302 if (needShutdown) { 303 LOGV("initiating %s decoder shutdown", 304 audio ? "audio" : "video"); 305 306 (audio ? mAudioDecoder : mVideoDecoder)->initiateShutdown(); 307 308 if (audio) { 309 mFlushingAudio = SHUTTING_DOWN_DECODER; 310 } else { 311 mFlushingVideo = SHUTTING_DOWN_DECODER; 312 } 313 } 314 315 finishFlushIfPossible(); 316 } else if (what == ACodec::kWhatOutputFormatChanged) { 317 if (audio) { 318 int32_t numChannels; 319 CHECK(codecRequest->findInt32("channel-count", &numChannels)); 320 321 int32_t sampleRate; 322 CHECK(codecRequest->findInt32("sample-rate", &sampleRate)); 323 324 LOGV("Audio output format changed to %d Hz, %d channels", 325 sampleRate, numChannels); 326 327 mAudioSink->close(); 328 CHECK_EQ(mAudioSink->open( 329 sampleRate, 330 numChannels, 331 AUDIO_FORMAT_PCM_16_BIT, 332 8 /* bufferCount */), 333 (status_t)OK); 334 mAudioSink->start(); 335 336 mRenderer->signalAudioSinkChanged(); 337 } else { 338 // video 339 340 int32_t width, height; 341 CHECK(codecRequest->findInt32("width", &width)); 342 CHECK(codecRequest->findInt32("height", &height)); 343 344 int32_t cropLeft, cropTop, cropRight, cropBottom; 345 CHECK(codecRequest->findRect( 346 "crop", 347 &cropLeft, &cropTop, &cropRight, &cropBottom)); 348 349 LOGV("Video output format changed to %d x %d " 350 "(crop: %d x %d @ (%d, %d))", 351 width, height, 352 (cropRight - cropLeft + 1), 353 (cropBottom - cropTop + 1), 354 cropLeft, cropTop); 355 356 notifyListener( 357 MEDIA_SET_VIDEO_SIZE, 358 cropRight - cropLeft + 1, 359 cropBottom - cropTop + 1); 360 } 361 } else if (what == ACodec::kWhatShutdownCompleted) { 362 LOGV("%s shutdown completed", audio ? "audio" : "video"); 363 if (audio) { 364 mAudioDecoder.clear(); 365 366 CHECK_EQ((int)mFlushingAudio, (int)SHUTTING_DOWN_DECODER); 367 mFlushingAudio = SHUT_DOWN; 368 } else { 369 mVideoDecoder.clear(); 370 371 CHECK_EQ((int)mFlushingVideo, (int)SHUTTING_DOWN_DECODER); 372 mFlushingVideo = SHUT_DOWN; 373 } 374 375 finishFlushIfPossible(); 376 } else if (what == ACodec::kWhatError) { 377 LOGE("Received error from %s decoder, aborting playback.", 378 audio ? "audio" : "video"); 379 380 mRenderer->queueEOS(audio, UNKNOWN_ERROR); 381 } else { 382 CHECK_EQ((int)what, (int)ACodec::kWhatDrainThisBuffer); 383 384 renderBuffer(audio, codecRequest); 385 } 386 387 break; 388 } 389 390 case kWhatRendererNotify: 391 { 392 int32_t what; 393 CHECK(msg->findInt32("what", &what)); 394 395 if (what == Renderer::kWhatEOS) { 396 int32_t audio; 397 CHECK(msg->findInt32("audio", &audio)); 398 399 int32_t finalResult; 400 CHECK(msg->findInt32("finalResult", &finalResult)); 401 402 if (audio) { 403 mAudioEOS = true; 404 } else { 405 mVideoEOS = true; 406 } 407 408 if (finalResult == ERROR_END_OF_STREAM) { 409 LOGV("reached %s EOS", audio ? "audio" : "video"); 410 } else { 411 LOGE("%s track encountered an error (%d)", 412 audio ? "audio" : "video", finalResult); 413 414 notifyListener( 415 MEDIA_ERROR, MEDIA_ERROR_UNKNOWN, finalResult); 416 } 417 418 if ((mAudioEOS || mAudioDecoder == NULL) 419 && (mVideoEOS || mVideoDecoder == NULL)) { 420 notifyListener(MEDIA_PLAYBACK_COMPLETE, 0, 0); 421 } 422 } else if (what == Renderer::kWhatPosition) { 423 int64_t positionUs; 424 CHECK(msg->findInt64("positionUs", &positionUs)); 425 426 CHECK(msg->findInt64("videoLateByUs", &mVideoLateByUs)); 427 428 if (mDriver != NULL) { 429 sp<NuPlayerDriver> driver = mDriver.promote(); 430 if (driver != NULL) { 431 driver->notifyPosition(positionUs); 432 433 driver->notifyFrameStats( 434 mNumFramesTotal, mNumFramesDropped); 435 } 436 } 437 } else if (what == Renderer::kWhatFlushComplete) { 438 CHECK_EQ(what, (int32_t)Renderer::kWhatFlushComplete); 439 440 int32_t audio; 441 CHECK(msg->findInt32("audio", &audio)); 442 443 LOGV("renderer %s flush completed.", audio ? "audio" : "video"); 444 } 445 break; 446 } 447 448 case kWhatMoreDataQueued: 449 { 450 break; 451 } 452 453 case kWhatReset: 454 { 455 LOGV("kWhatReset"); 456 457 if (mFlushingAudio != NONE || mFlushingVideo != NONE) { 458 // We're currently flushing, postpone the reset until that's 459 // completed. 460 461 LOGV("postponing reset"); 462 463 mResetPostponed = true; 464 break; 465 } 466 467 if (mAudioDecoder == NULL && mVideoDecoder == NULL) { 468 finishReset(); 469 break; 470 } 471 472 if (mAudioDecoder != NULL) { 473 flushDecoder(true /* audio */, true /* needShutdown */); 474 } 475 476 if (mVideoDecoder != NULL) { 477 flushDecoder(false /* audio */, true /* needShutdown */); 478 } 479 480 mResetInProgress = true; 481 break; 482 } 483 484 case kWhatSeek: 485 { 486 int64_t seekTimeUs; 487 CHECK(msg->findInt64("seekTimeUs", &seekTimeUs)); 488 489 LOGV("kWhatSeek seekTimeUs=%lld us (%.2f secs)", 490 seekTimeUs, seekTimeUs / 1E6); 491 492 mSource->seekTo(seekTimeUs); 493 494 if (mDriver != NULL) { 495 sp<NuPlayerDriver> driver = mDriver.promote(); 496 if (driver != NULL) { 497 driver->notifySeekComplete(); 498 } 499 } 500 501 break; 502 } 503 504 case kWhatPause: 505 { 506 CHECK(mRenderer != NULL); 507 mRenderer->pause(); 508 break; 509 } 510 511 case kWhatResume: 512 { 513 CHECK(mRenderer != NULL); 514 mRenderer->resume(); 515 break; 516 } 517 518 default: 519 TRESPASS(); 520 break; 521 } 522} 523 524void NuPlayer::finishFlushIfPossible() { 525 if (mFlushingAudio != FLUSHED && mFlushingAudio != SHUT_DOWN) { 526 return; 527 } 528 529 if (mFlushingVideo != FLUSHED && mFlushingVideo != SHUT_DOWN) { 530 return; 531 } 532 533 LOGV("both audio and video are flushed now."); 534 535 mRenderer->signalTimeDiscontinuity(); 536 537 if (mAudioDecoder != NULL) { 538 mAudioDecoder->signalResume(); 539 } 540 541 if (mVideoDecoder != NULL) { 542 mVideoDecoder->signalResume(); 543 } 544 545 mFlushingAudio = NONE; 546 mFlushingVideo = NONE; 547 548 if (mResetInProgress) { 549 LOGV("reset completed"); 550 551 mResetInProgress = false; 552 finishReset(); 553 } else if (mResetPostponed) { 554 (new AMessage(kWhatReset, id()))->post(); 555 mResetPostponed = false; 556 } else if (mAudioDecoder == NULL || mVideoDecoder == NULL) { 557 postScanSources(); 558 } 559} 560 561void NuPlayer::finishReset() { 562 CHECK(mAudioDecoder == NULL); 563 CHECK(mVideoDecoder == NULL); 564 565 mRenderer.clear(); 566 mSource.clear(); 567 568 if (mDriver != NULL) { 569 sp<NuPlayerDriver> driver = mDriver.promote(); 570 if (driver != NULL) { 571 driver->notifyResetComplete(); 572 } 573 } 574} 575 576void NuPlayer::postScanSources() { 577 if (mScanSourcesPending) { 578 return; 579 } 580 581 sp<AMessage> msg = new AMessage(kWhatScanSources, id()); 582 msg->setInt32("generation", mScanSourcesGeneration); 583 msg->post(); 584 585 mScanSourcesPending = true; 586} 587 588status_t NuPlayer::instantiateDecoder(bool audio, sp<Decoder> *decoder) { 589 if (*decoder != NULL) { 590 return OK; 591 } 592 593 sp<MetaData> meta = mSource->getFormat(audio); 594 595 if (meta == NULL) { 596 return -EWOULDBLOCK; 597 } 598 599 if (!audio) { 600 const char *mime; 601 CHECK(meta->findCString(kKeyMIMEType, &mime)); 602 mVideoIsAVC = !strcasecmp(MEDIA_MIMETYPE_VIDEO_AVC, mime); 603 } 604 605 sp<AMessage> notify = 606 new AMessage(audio ? kWhatAudioNotify : kWhatVideoNotify, 607 id()); 608 609 *decoder = audio ? new Decoder(notify) : 610 new Decoder(notify, mNativeWindow); 611 looper()->registerHandler(*decoder); 612 613 (*decoder)->configure(meta); 614 615 int64_t durationUs; 616 if (mDriver != NULL && mSource->getDuration(&durationUs) == OK) { 617 sp<NuPlayerDriver> driver = mDriver.promote(); 618 if (driver != NULL) { 619 driver->notifyDuration(durationUs); 620 } 621 } 622 623 return OK; 624} 625 626status_t NuPlayer::feedDecoderInputData(bool audio, const sp<AMessage> &msg) { 627 sp<AMessage> reply; 628 CHECK(msg->findMessage("reply", &reply)); 629 630 if ((audio && IsFlushingState(mFlushingAudio)) 631 || (!audio && IsFlushingState(mFlushingVideo))) { 632 reply->setInt32("err", INFO_DISCONTINUITY); 633 reply->post(); 634 return OK; 635 } 636 637 sp<ABuffer> accessUnit; 638 639 bool dropAccessUnit; 640 do { 641 status_t err = mSource->dequeueAccessUnit(audio, &accessUnit); 642 643 if (err == -EWOULDBLOCK) { 644 return err; 645 } else if (err != OK) { 646 if (err == INFO_DISCONTINUITY) { 647 int32_t type; 648 CHECK(accessUnit->meta()->findInt32("discontinuity", &type)); 649 650 bool formatChange = 651 type == ATSParser::DISCONTINUITY_FORMATCHANGE; 652 653 LOGV("%s discontinuity (formatChange=%d)", 654 audio ? "audio" : "video", formatChange); 655 656 if (audio) { 657 mSkipRenderingAudioUntilMediaTimeUs = -1; 658 } else { 659 mSkipRenderingVideoUntilMediaTimeUs = -1; 660 } 661 662 sp<AMessage> extra; 663 if (accessUnit->meta()->findMessage("extra", &extra) 664 && extra != NULL) { 665 int64_t resumeAtMediaTimeUs; 666 if (extra->findInt64( 667 "resume-at-mediatimeUs", &resumeAtMediaTimeUs)) { 668 LOGI("suppressing rendering of %s until %lld us", 669 audio ? "audio" : "video", resumeAtMediaTimeUs); 670 671 if (audio) { 672 mSkipRenderingAudioUntilMediaTimeUs = 673 resumeAtMediaTimeUs; 674 } else { 675 mSkipRenderingVideoUntilMediaTimeUs = 676 resumeAtMediaTimeUs; 677 } 678 } 679 } 680 681 flushDecoder(audio, formatChange); 682 } 683 684 reply->setInt32("err", err); 685 reply->post(); 686 return OK; 687 } 688 689 if (!audio) { 690 ++mNumFramesTotal; 691 } 692 693 dropAccessUnit = false; 694 if (!audio 695 && mVideoLateByUs > 100000ll 696 && mVideoIsAVC 697 && !IsAVCReferenceFrame(accessUnit)) { 698 dropAccessUnit = true; 699 ++mNumFramesDropped; 700 } 701 } while (dropAccessUnit); 702 703 // LOGV("returned a valid buffer of %s data", audio ? "audio" : "video"); 704 705#if 0 706 int64_t mediaTimeUs; 707 CHECK(accessUnit->meta()->findInt64("timeUs", &mediaTimeUs)); 708 LOGV("feeding %s input buffer at media time %.2f secs", 709 audio ? "audio" : "video", 710 mediaTimeUs / 1E6); 711#endif 712 713 reply->setObject("buffer", accessUnit); 714 reply->post(); 715 716 return OK; 717} 718 719void NuPlayer::renderBuffer(bool audio, const sp<AMessage> &msg) { 720 // LOGV("renderBuffer %s", audio ? "audio" : "video"); 721 722 sp<AMessage> reply; 723 CHECK(msg->findMessage("reply", &reply)); 724 725 if (IsFlushingState(audio ? mFlushingAudio : mFlushingVideo)) { 726 // We're currently attempting to flush the decoder, in order 727 // to complete this, the decoder wants all its buffers back, 728 // so we don't want any output buffers it sent us (from before 729 // we initiated the flush) to be stuck in the renderer's queue. 730 731 LOGV("we're still flushing the %s decoder, sending its output buffer" 732 " right back.", audio ? "audio" : "video"); 733 734 reply->post(); 735 return; 736 } 737 738 sp<RefBase> obj; 739 CHECK(msg->findObject("buffer", &obj)); 740 741 sp<ABuffer> buffer = static_cast<ABuffer *>(obj.get()); 742 743 int64_t &skipUntilMediaTimeUs = 744 audio 745 ? mSkipRenderingAudioUntilMediaTimeUs 746 : mSkipRenderingVideoUntilMediaTimeUs; 747 748 if (skipUntilMediaTimeUs >= 0) { 749 int64_t mediaTimeUs; 750 CHECK(buffer->meta()->findInt64("timeUs", &mediaTimeUs)); 751 752 if (mediaTimeUs < skipUntilMediaTimeUs) { 753 LOGV("dropping %s buffer at time %lld as requested.", 754 audio ? "audio" : "video", 755 mediaTimeUs); 756 757 reply->post(); 758 return; 759 } 760 761 skipUntilMediaTimeUs = -1; 762 } 763 764 mRenderer->queueBuffer(audio, buffer, reply); 765} 766 767void NuPlayer::notifyListener(int msg, int ext1, int ext2) { 768 if (mDriver == NULL) { 769 return; 770 } 771 772 sp<NuPlayerDriver> driver = mDriver.promote(); 773 774 if (driver == NULL) { 775 return; 776 } 777 778 driver->sendEvent(msg, ext1, ext2); 779} 780 781void NuPlayer::flushDecoder(bool audio, bool needShutdown) { 782 // Make sure we don't continue to scan sources until we finish flushing. 783 ++mScanSourcesGeneration; 784 mScanSourcesPending = false; 785 786 (audio ? mAudioDecoder : mVideoDecoder)->signalFlush(); 787 mRenderer->flush(audio); 788 789 FlushStatus newStatus = 790 needShutdown ? FLUSHING_DECODER_SHUTDOWN : FLUSHING_DECODER; 791 792 if (audio) { 793 CHECK(mFlushingAudio == NONE 794 || mFlushingAudio == AWAITING_DISCONTINUITY); 795 796 mFlushingAudio = newStatus; 797 798 if (mFlushingVideo == NONE) { 799 mFlushingVideo = (mVideoDecoder != NULL) 800 ? AWAITING_DISCONTINUITY 801 : FLUSHED; 802 } 803 } else { 804 CHECK(mFlushingVideo == NONE 805 || mFlushingVideo == AWAITING_DISCONTINUITY); 806 807 mFlushingVideo = newStatus; 808 809 if (mFlushingAudio == NONE) { 810 mFlushingAudio = (mAudioDecoder != NULL) 811 ? AWAITING_DISCONTINUITY 812 : FLUSHED; 813 } 814 } 815} 816 817} // namespace android 818