1 /* 2 * Copyright (C) 2012 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 "GenericSource" 19 20 #include "GenericSource.h" 21 22 #include "AnotherPacketSource.h" 23 24 #include <media/IMediaHTTPService.h> 25 #include <media/stagefright/foundation/ABuffer.h> 26 #include <media/stagefright/foundation/ADebug.h> 27 #include <media/stagefright/foundation/AMessage.h> 28 #include <media/stagefright/DataSource.h> 29 #include <media/stagefright/FileSource.h> 30 #include <media/stagefright/MediaBuffer.h> 31 #include <media/stagefright/MediaDefs.h> 32 #include <media/stagefright/MediaExtractor.h> 33 #include <media/stagefright/MediaSource.h> 34 #include <media/stagefright/MetaData.h> 35 #include <media/stagefright/Utils.h> 36 #include "../../libstagefright/include/DRMExtractor.h" 37 #include "../../libstagefright/include/NuCachedSource2.h" 38 #include "../../libstagefright/include/WVMExtractor.h" 39 #include "../../libstagefright/include/HTTPBase.h" 40 41 namespace android { 42 43 static int64_t kLowWaterMarkUs = 2000000ll; // 2secs 44 static int64_t kHighWaterMarkUs = 5000000ll; // 5secs 45 static const ssize_t kLowWaterMarkBytes = 40000; 46 static const ssize_t kHighWaterMarkBytes = 200000; 47 48 NuPlayer::GenericSource::GenericSource( 49 const sp<AMessage> ¬ify, 50 bool uidValid, 51 uid_t uid) 52 : Source(notify), 53 mAudioTimeUs(0), 54 mAudioLastDequeueTimeUs(0), 55 mVideoTimeUs(0), 56 mVideoLastDequeueTimeUs(0), 57 mFetchSubtitleDataGeneration(0), 58 mFetchTimedTextDataGeneration(0), 59 mDurationUs(-1ll), 60 mAudioIsVorbis(false), 61 mIsWidevine(false), 62 mIsSecure(false), 63 mIsStreaming(false), 64 mUIDValid(uidValid), 65 mUID(uid), 66 mFd(-1), 67 mDrmManagerClient(NULL), 68 mBitrate(-1ll), 69 mPollBufferingGeneration(0), 70 mPendingReadBufferTypes(0), 71 mBuffering(false), 72 mPrepareBuffering(false), 73 mPrevBufferPercentage(-1) { 74 resetDataSource(); 75 DataSource::RegisterDefaultSniffers(); 76 } 77 78 void NuPlayer::GenericSource::resetDataSource() { 79 mHTTPService.clear(); 80 mHttpSource.clear(); 81 mUri.clear(); 82 mUriHeaders.clear(); 83 if (mFd >= 0) { 84 close(mFd); 85 mFd = -1; 86 } 87 mOffset = 0; 88 mLength = 0; 89 setDrmPlaybackStatusIfNeeded(Playback::STOP, 0); 90 mDecryptHandle = NULL; 91 mDrmManagerClient = NULL; 92 mStarted = false; 93 mStopRead = true; 94 } 95 96 status_t NuPlayer::GenericSource::setDataSource( 97 const sp<IMediaHTTPService> &httpService, 98 const char *url, 99 const KeyedVector<String8, String8> *headers) { 100 resetDataSource(); 101 102 mHTTPService = httpService; 103 mUri = url; 104 105 if (headers) { 106 mUriHeaders = *headers; 107 } 108 109 // delay data source creation to prepareAsync() to avoid blocking 110 // the calling thread in setDataSource for any significant time. 111 return OK; 112 } 113 114 status_t NuPlayer::GenericSource::setDataSource( 115 int fd, int64_t offset, int64_t length) { 116 resetDataSource(); 117 118 mFd = dup(fd); 119 mOffset = offset; 120 mLength = length; 121 122 // delay data source creation to prepareAsync() to avoid blocking 123 // the calling thread in setDataSource for any significant time. 124 return OK; 125 } 126 127 status_t NuPlayer::GenericSource::setDataSource(const sp<DataSource>& source) { 128 resetDataSource(); 129 mDataSource = source; 130 return OK; 131 } 132 133 sp<MetaData> NuPlayer::GenericSource::getFileFormatMeta() const { 134 return mFileMeta; 135 } 136 137 status_t NuPlayer::GenericSource::initFromDataSource() { 138 sp<MediaExtractor> extractor; 139 String8 mimeType; 140 float confidence; 141 sp<AMessage> dummy; 142 bool isWidevineStreaming = false; 143 144 CHECK(mDataSource != NULL); 145 146 if (mIsWidevine) { 147 isWidevineStreaming = SniffWVM( 148 mDataSource, &mimeType, &confidence, &dummy); 149 if (!isWidevineStreaming || 150 strcasecmp( 151 mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM)) { 152 ALOGE("unsupported widevine mime: %s", mimeType.string()); 153 return UNKNOWN_ERROR; 154 } 155 } else if (mIsStreaming) { 156 if (!mDataSource->sniff(&mimeType, &confidence, &dummy)) { 157 return UNKNOWN_ERROR; 158 } 159 isWidevineStreaming = !strcasecmp( 160 mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM); 161 } 162 163 if (isWidevineStreaming) { 164 // we don't want cached source for widevine streaming. 165 mCachedSource.clear(); 166 mDataSource = mHttpSource; 167 mWVMExtractor = new WVMExtractor(mDataSource); 168 mWVMExtractor->setAdaptiveStreamingMode(true); 169 if (mUIDValid) { 170 mWVMExtractor->setUID(mUID); 171 } 172 extractor = mWVMExtractor; 173 } else { 174 extractor = MediaExtractor::Create(mDataSource, 175 mimeType.isEmpty() ? NULL : mimeType.string()); 176 } 177 178 if (extractor == NULL) { 179 return UNKNOWN_ERROR; 180 } 181 182 if (extractor->getDrmFlag()) { 183 checkDrmStatus(mDataSource); 184 } 185 186 mFileMeta = extractor->getMetaData(); 187 if (mFileMeta != NULL) { 188 int64_t duration; 189 if (mFileMeta->findInt64(kKeyDuration, &duration)) { 190 mDurationUs = duration; 191 } 192 193 if (!mIsWidevine) { 194 // Check mime to see if we actually have a widevine source. 195 // If the data source is not URL-type (eg. file source), we 196 // won't be able to tell until now. 197 const char *fileMime; 198 if (mFileMeta->findCString(kKeyMIMEType, &fileMime) 199 && !strncasecmp(fileMime, "video/wvm", 9)) { 200 mIsWidevine = true; 201 } 202 } 203 } 204 205 int32_t totalBitrate = 0; 206 207 size_t numtracks = extractor->countTracks(); 208 if (numtracks == 0) { 209 return UNKNOWN_ERROR; 210 } 211 212 for (size_t i = 0; i < numtracks; ++i) { 213 sp<MediaSource> track = extractor->getTrack(i); 214 215 sp<MetaData> meta = extractor->getTrackMetaData(i); 216 217 const char *mime; 218 CHECK(meta->findCString(kKeyMIMEType, &mime)); 219 220 // Do the string compare immediately with "mime", 221 // we can't assume "mime" would stay valid after another 222 // extractor operation, some extractors might modify meta 223 // during getTrack() and make it invalid. 224 if (!strncasecmp(mime, "audio/", 6)) { 225 if (mAudioTrack.mSource == NULL) { 226 mAudioTrack.mIndex = i; 227 mAudioTrack.mSource = track; 228 mAudioTrack.mPackets = 229 new AnotherPacketSource(mAudioTrack.mSource->getFormat()); 230 231 if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) { 232 mAudioIsVorbis = true; 233 } else { 234 mAudioIsVorbis = false; 235 } 236 } 237 } else if (!strncasecmp(mime, "video/", 6)) { 238 if (mVideoTrack.mSource == NULL) { 239 mVideoTrack.mIndex = i; 240 mVideoTrack.mSource = track; 241 mVideoTrack.mPackets = 242 new AnotherPacketSource(mVideoTrack.mSource->getFormat()); 243 244 // check if the source requires secure buffers 245 int32_t secure; 246 if (meta->findInt32(kKeyRequiresSecureBuffers, &secure) 247 && secure) { 248 mIsSecure = true; 249 if (mUIDValid) { 250 extractor->setUID(mUID); 251 } 252 } 253 } 254 } 255 256 if (track != NULL) { 257 mSources.push(track); 258 int64_t durationUs; 259 if (meta->findInt64(kKeyDuration, &durationUs)) { 260 if (durationUs > mDurationUs) { 261 mDurationUs = durationUs; 262 } 263 } 264 265 int32_t bitrate; 266 if (totalBitrate >= 0 && meta->findInt32(kKeyBitRate, &bitrate)) { 267 totalBitrate += bitrate; 268 } else { 269 totalBitrate = -1; 270 } 271 } 272 } 273 274 mBitrate = totalBitrate; 275 276 return OK; 277 } 278 279 status_t NuPlayer::GenericSource::startSources() { 280 // Start the selected A/V tracks now before we start buffering. 281 // Widevine sources might re-initialize crypto when starting, if we delay 282 // this to start(), all data buffered during prepare would be wasted. 283 // (We don't actually start reading until start().) 284 if (mAudioTrack.mSource != NULL && mAudioTrack.mSource->start() != OK) { 285 ALOGE("failed to start audio track!"); 286 return UNKNOWN_ERROR; 287 } 288 289 if (mVideoTrack.mSource != NULL && mVideoTrack.mSource->start() != OK) { 290 ALOGE("failed to start video track!"); 291 return UNKNOWN_ERROR; 292 } 293 294 return OK; 295 } 296 297 void NuPlayer::GenericSource::checkDrmStatus(const sp<DataSource>& dataSource) { 298 dataSource->getDrmInfo(mDecryptHandle, &mDrmManagerClient); 299 if (mDecryptHandle != NULL) { 300 CHECK(mDrmManagerClient); 301 if (RightsStatus::RIGHTS_VALID != mDecryptHandle->status) { 302 sp<AMessage> msg = dupNotify(); 303 msg->setInt32("what", kWhatDrmNoLicense); 304 msg->post(); 305 } 306 } 307 } 308 309 int64_t NuPlayer::GenericSource::getLastReadPosition() { 310 if (mAudioTrack.mSource != NULL) { 311 return mAudioTimeUs; 312 } else if (mVideoTrack.mSource != NULL) { 313 return mVideoTimeUs; 314 } else { 315 return 0; 316 } 317 } 318 319 status_t NuPlayer::GenericSource::setBuffers( 320 bool audio, Vector<MediaBuffer *> &buffers) { 321 if (mIsSecure && !audio) { 322 return mVideoTrack.mSource->setBuffers(buffers); 323 } 324 return INVALID_OPERATION; 325 } 326 327 bool NuPlayer::GenericSource::isStreaming() const { 328 return mIsStreaming; 329 } 330 331 NuPlayer::GenericSource::~GenericSource() { 332 if (mLooper != NULL) { 333 mLooper->unregisterHandler(id()); 334 mLooper->stop(); 335 } 336 resetDataSource(); 337 } 338 339 void NuPlayer::GenericSource::prepareAsync() { 340 if (mLooper == NULL) { 341 mLooper = new ALooper; 342 mLooper->setName("generic"); 343 mLooper->start(); 344 345 mLooper->registerHandler(this); 346 } 347 348 sp<AMessage> msg = new AMessage(kWhatPrepareAsync, this); 349 msg->post(); 350 } 351 352 void NuPlayer::GenericSource::onPrepareAsync() { 353 // delayed data source creation 354 if (mDataSource == NULL) { 355 // set to false first, if the extractor 356 // comes back as secure, set it to true then. 357 mIsSecure = false; 358 359 if (!mUri.empty()) { 360 const char* uri = mUri.c_str(); 361 String8 contentType; 362 mIsWidevine = !strncasecmp(uri, "widevine://", 11); 363 364 if (!strncasecmp("http://", uri, 7) 365 || !strncasecmp("https://", uri, 8) 366 || mIsWidevine) { 367 mHttpSource = DataSource::CreateMediaHTTP(mHTTPService); 368 if (mHttpSource == NULL) { 369 ALOGE("Failed to create http source!"); 370 notifyPreparedAndCleanup(UNKNOWN_ERROR); 371 return; 372 } 373 } 374 375 mDataSource = DataSource::CreateFromURI( 376 mHTTPService, uri, &mUriHeaders, &contentType, 377 static_cast<HTTPBase *>(mHttpSource.get())); 378 } else { 379 mIsWidevine = false; 380 381 mDataSource = new FileSource(mFd, mOffset, mLength); 382 mFd = -1; 383 } 384 385 if (mDataSource == NULL) { 386 ALOGE("Failed to create data source!"); 387 notifyPreparedAndCleanup(UNKNOWN_ERROR); 388 return; 389 } 390 } 391 392 if (mDataSource->flags() & DataSource::kIsCachingDataSource) { 393 mCachedSource = static_cast<NuCachedSource2 *>(mDataSource.get()); 394 } 395 396 // For widevine or other cached streaming cases, we need to wait for 397 // enough buffering before reporting prepared. 398 // Note that even when URL doesn't start with widevine://, mIsWidevine 399 // could still be set to true later, if the streaming or file source 400 // is sniffed to be widevine. We don't want to buffer for file source 401 // in that case, so must check the flag now. 402 mIsStreaming = (mIsWidevine || mCachedSource != NULL); 403 404 // init extractor from data source 405 status_t err = initFromDataSource(); 406 407 if (err != OK) { 408 ALOGE("Failed to init from data source!"); 409 notifyPreparedAndCleanup(err); 410 return; 411 } 412 413 if (mVideoTrack.mSource != NULL) { 414 sp<MetaData> meta = doGetFormatMeta(false /* audio */); 415 sp<AMessage> msg = new AMessage; 416 err = convertMetaDataToMessage(meta, &msg); 417 if(err != OK) { 418 notifyPreparedAndCleanup(err); 419 return; 420 } 421 notifyVideoSizeChanged(msg); 422 } 423 424 notifyFlagsChanged( 425 (mIsSecure ? FLAG_SECURE : 0) 426 | (mDecryptHandle != NULL ? FLAG_PROTECTED : 0) 427 | FLAG_CAN_PAUSE 428 | FLAG_CAN_SEEK_BACKWARD 429 | FLAG_CAN_SEEK_FORWARD 430 | FLAG_CAN_SEEK); 431 432 if (mIsSecure) { 433 // secure decoders must be instantiated before starting widevine source 434 sp<AMessage> reply = new AMessage(kWhatSecureDecodersInstantiated, this); 435 notifyInstantiateSecureDecoders(reply); 436 } else { 437 finishPrepareAsync(); 438 } 439 } 440 441 void NuPlayer::GenericSource::onSecureDecodersInstantiated(status_t err) { 442 if (err != OK) { 443 ALOGE("Failed to instantiate secure decoders!"); 444 notifyPreparedAndCleanup(err); 445 return; 446 } 447 finishPrepareAsync(); 448 } 449 450 void NuPlayer::GenericSource::finishPrepareAsync() { 451 status_t err = startSources(); 452 if (err != OK) { 453 ALOGE("Failed to init start data source!"); 454 notifyPreparedAndCleanup(err); 455 return; 456 } 457 458 if (mIsStreaming) { 459 mPrepareBuffering = true; 460 461 ensureCacheIsFetching(); 462 restartPollBuffering(); 463 } else { 464 notifyPrepared(); 465 } 466 } 467 468 void NuPlayer::GenericSource::notifyPreparedAndCleanup(status_t err) { 469 if (err != OK) { 470 mDataSource.clear(); 471 mCachedSource.clear(); 472 mHttpSource.clear(); 473 mBitrate = -1; 474 475 cancelPollBuffering(); 476 } 477 notifyPrepared(err); 478 } 479 480 void NuPlayer::GenericSource::start() { 481 ALOGI("start"); 482 483 mStopRead = false; 484 if (mAudioTrack.mSource != NULL) { 485 postReadBuffer(MEDIA_TRACK_TYPE_AUDIO); 486 } 487 488 if (mVideoTrack.mSource != NULL) { 489 postReadBuffer(MEDIA_TRACK_TYPE_VIDEO); 490 } 491 492 setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000); 493 mStarted = true; 494 495 (new AMessage(kWhatStart, this))->post(); 496 } 497 498 void NuPlayer::GenericSource::stop() { 499 // nothing to do, just account for DRM playback status 500 setDrmPlaybackStatusIfNeeded(Playback::STOP, 0); 501 mStarted = false; 502 if (mIsWidevine || mIsSecure) { 503 // For widevine or secure sources we need to prevent any further reads. 504 sp<AMessage> msg = new AMessage(kWhatStopWidevine, this); 505 sp<AMessage> response; 506 (void) msg->postAndAwaitResponse(&response); 507 } 508 } 509 510 void NuPlayer::GenericSource::pause() { 511 // nothing to do, just account for DRM playback status 512 setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0); 513 mStarted = false; 514 } 515 516 void NuPlayer::GenericSource::resume() { 517 // nothing to do, just account for DRM playback status 518 setDrmPlaybackStatusIfNeeded(Playback::START, getLastReadPosition() / 1000); 519 mStarted = true; 520 521 (new AMessage(kWhatResume, this))->post(); 522 } 523 524 void NuPlayer::GenericSource::disconnect() { 525 if (mDataSource != NULL) { 526 // disconnect data source 527 if (mDataSource->flags() & DataSource::kIsCachingDataSource) { 528 static_cast<NuCachedSource2 *>(mDataSource.get())->disconnect(); 529 } 530 } else if (mHttpSource != NULL) { 531 static_cast<HTTPBase *>(mHttpSource.get())->disconnect(); 532 } 533 } 534 535 void NuPlayer::GenericSource::setDrmPlaybackStatusIfNeeded(int playbackStatus, int64_t position) { 536 if (mDecryptHandle != NULL) { 537 mDrmManagerClient->setPlaybackStatus(mDecryptHandle, playbackStatus, position); 538 } 539 mSubtitleTrack.mPackets = new AnotherPacketSource(NULL); 540 mTimedTextTrack.mPackets = new AnotherPacketSource(NULL); 541 } 542 543 status_t NuPlayer::GenericSource::feedMoreTSData() { 544 return OK; 545 } 546 547 void NuPlayer::GenericSource::schedulePollBuffering() { 548 sp<AMessage> msg = new AMessage(kWhatPollBuffering, this); 549 msg->setInt32("generation", mPollBufferingGeneration); 550 msg->post(1000000ll); 551 } 552 553 void NuPlayer::GenericSource::cancelPollBuffering() { 554 mBuffering = false; 555 ++mPollBufferingGeneration; 556 mPrevBufferPercentage = -1; 557 } 558 559 void NuPlayer::GenericSource::restartPollBuffering() { 560 if (mIsStreaming) { 561 cancelPollBuffering(); 562 onPollBuffering(); 563 } 564 } 565 566 void NuPlayer::GenericSource::notifyBufferingUpdate(int32_t percentage) { 567 // Buffering percent could go backward as it's estimated from remaining 568 // data and last access time. This could cause the buffering position 569 // drawn on media control to jitter slightly. Remember previously reported 570 // percentage and don't allow it to go backward. 571 if (percentage < mPrevBufferPercentage) { 572 percentage = mPrevBufferPercentage; 573 } else if (percentage > 100) { 574 percentage = 100; 575 } 576 577 mPrevBufferPercentage = percentage; 578 579 ALOGV("notifyBufferingUpdate: buffering %d%%", percentage); 580 581 sp<AMessage> msg = dupNotify(); 582 msg->setInt32("what", kWhatBufferingUpdate); 583 msg->setInt32("percentage", percentage); 584 msg->post(); 585 } 586 587 void NuPlayer::GenericSource::startBufferingIfNecessary() { 588 ALOGV("startBufferingIfNecessary: mPrepareBuffering=%d, mBuffering=%d", 589 mPrepareBuffering, mBuffering); 590 591 if (mPrepareBuffering) { 592 return; 593 } 594 595 if (!mBuffering) { 596 mBuffering = true; 597 598 ensureCacheIsFetching(); 599 sendCacheStats(); 600 601 sp<AMessage> notify = dupNotify(); 602 notify->setInt32("what", kWhatPauseOnBufferingStart); 603 notify->post(); 604 } 605 } 606 607 void NuPlayer::GenericSource::stopBufferingIfNecessary() { 608 ALOGV("stopBufferingIfNecessary: mPrepareBuffering=%d, mBuffering=%d", 609 mPrepareBuffering, mBuffering); 610 611 if (mPrepareBuffering) { 612 mPrepareBuffering = false; 613 notifyPrepared(); 614 return; 615 } 616 617 if (mBuffering) { 618 mBuffering = false; 619 620 sendCacheStats(); 621 622 sp<AMessage> notify = dupNotify(); 623 notify->setInt32("what", kWhatResumeOnBufferingEnd); 624 notify->post(); 625 } 626 } 627 628 void NuPlayer::GenericSource::sendCacheStats() { 629 int32_t kbps = 0; 630 status_t err = UNKNOWN_ERROR; 631 632 if (mWVMExtractor != NULL) { 633 err = mWVMExtractor->getEstimatedBandwidthKbps(&kbps); 634 } else if (mCachedSource != NULL) { 635 err = mCachedSource->getEstimatedBandwidthKbps(&kbps); 636 } 637 638 if (err == OK) { 639 sp<AMessage> notify = dupNotify(); 640 notify->setInt32("what", kWhatCacheStats); 641 notify->setInt32("bandwidth", kbps); 642 notify->post(); 643 } 644 } 645 646 void NuPlayer::GenericSource::ensureCacheIsFetching() { 647 if (mCachedSource != NULL) { 648 mCachedSource->resumeFetchingIfNecessary(); 649 } 650 } 651 652 void NuPlayer::GenericSource::onPollBuffering() { 653 status_t finalStatus = UNKNOWN_ERROR; 654 int64_t cachedDurationUs = -1ll; 655 ssize_t cachedDataRemaining = -1; 656 657 ALOGW_IF(mWVMExtractor != NULL && mCachedSource != NULL, 658 "WVMExtractor and NuCachedSource both present"); 659 660 if (mWVMExtractor != NULL) { 661 cachedDurationUs = 662 mWVMExtractor->getCachedDurationUs(&finalStatus); 663 } else if (mCachedSource != NULL) { 664 cachedDataRemaining = 665 mCachedSource->approxDataRemaining(&finalStatus); 666 667 if (finalStatus == OK) { 668 off64_t size; 669 int64_t bitrate = 0ll; 670 if (mDurationUs > 0 && mCachedSource->getSize(&size) == OK) { 671 bitrate = size * 8000000ll / mDurationUs; 672 } else if (mBitrate > 0) { 673 bitrate = mBitrate; 674 } 675 if (bitrate > 0) { 676 cachedDurationUs = cachedDataRemaining * 8000000ll / bitrate; 677 } 678 } 679 } 680 681 if (finalStatus != OK) { 682 ALOGV("onPollBuffering: EOS (finalStatus = %d)", finalStatus); 683 684 if (finalStatus == ERROR_END_OF_STREAM) { 685 notifyBufferingUpdate(100); 686 } 687 688 stopBufferingIfNecessary(); 689 return; 690 } else if (cachedDurationUs >= 0ll) { 691 if (mDurationUs > 0ll) { 692 int64_t cachedPosUs = getLastReadPosition() + cachedDurationUs; 693 int percentage = 100.0 * cachedPosUs / mDurationUs; 694 if (percentage > 100) { 695 percentage = 100; 696 } 697 698 notifyBufferingUpdate(percentage); 699 } 700 701 ALOGV("onPollBuffering: cachedDurationUs %.1f sec", 702 cachedDurationUs / 1000000.0f); 703 704 if (cachedDurationUs < kLowWaterMarkUs) { 705 startBufferingIfNecessary(); 706 } else if (cachedDurationUs > kHighWaterMarkUs) { 707 stopBufferingIfNecessary(); 708 } 709 } else if (cachedDataRemaining >= 0) { 710 ALOGV("onPollBuffering: cachedDataRemaining %zd bytes", 711 cachedDataRemaining); 712 713 if (cachedDataRemaining < kLowWaterMarkBytes) { 714 startBufferingIfNecessary(); 715 } else if (cachedDataRemaining > kHighWaterMarkBytes) { 716 stopBufferingIfNecessary(); 717 } 718 } 719 720 schedulePollBuffering(); 721 } 722 723 void NuPlayer::GenericSource::onMessageReceived(const sp<AMessage> &msg) { 724 switch (msg->what()) { 725 case kWhatPrepareAsync: 726 { 727 onPrepareAsync(); 728 break; 729 } 730 case kWhatFetchSubtitleData: 731 { 732 fetchTextData(kWhatSendSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE, 733 mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg); 734 break; 735 } 736 737 case kWhatFetchTimedTextData: 738 { 739 fetchTextData(kWhatSendTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT, 740 mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg); 741 break; 742 } 743 744 case kWhatSendSubtitleData: 745 { 746 sendTextData(kWhatSubtitleData, MEDIA_TRACK_TYPE_SUBTITLE, 747 mFetchSubtitleDataGeneration, mSubtitleTrack.mPackets, msg); 748 break; 749 } 750 751 case kWhatSendTimedTextData: 752 { 753 sendTextData(kWhatTimedTextData, MEDIA_TRACK_TYPE_TIMEDTEXT, 754 mFetchTimedTextDataGeneration, mTimedTextTrack.mPackets, msg); 755 break; 756 } 757 758 case kWhatChangeAVSource: 759 { 760 int32_t trackIndex; 761 CHECK(msg->findInt32("trackIndex", &trackIndex)); 762 const sp<MediaSource> source = mSources.itemAt(trackIndex); 763 764 Track* track; 765 const char *mime; 766 media_track_type trackType, counterpartType; 767 sp<MetaData> meta = source->getFormat(); 768 meta->findCString(kKeyMIMEType, &mime); 769 if (!strncasecmp(mime, "audio/", 6)) { 770 track = &mAudioTrack; 771 trackType = MEDIA_TRACK_TYPE_AUDIO; 772 counterpartType = MEDIA_TRACK_TYPE_VIDEO;; 773 } else { 774 CHECK(!strncasecmp(mime, "video/", 6)); 775 track = &mVideoTrack; 776 trackType = MEDIA_TRACK_TYPE_VIDEO; 777 counterpartType = MEDIA_TRACK_TYPE_AUDIO;; 778 } 779 780 781 if (track->mSource != NULL) { 782 track->mSource->stop(); 783 } 784 track->mSource = source; 785 track->mSource->start(); 786 track->mIndex = trackIndex; 787 788 int64_t timeUs, actualTimeUs; 789 const bool formatChange = true; 790 if (trackType == MEDIA_TRACK_TYPE_AUDIO) { 791 timeUs = mAudioLastDequeueTimeUs; 792 } else { 793 timeUs = mVideoLastDequeueTimeUs; 794 } 795 readBuffer(trackType, timeUs, &actualTimeUs, formatChange); 796 readBuffer(counterpartType, -1, NULL, formatChange); 797 ALOGV("timeUs %lld actualTimeUs %lld", (long long)timeUs, (long long)actualTimeUs); 798 799 break; 800 } 801 802 case kWhatStart: 803 case kWhatResume: 804 { 805 restartPollBuffering(); 806 break; 807 } 808 809 case kWhatPollBuffering: 810 { 811 int32_t generation; 812 CHECK(msg->findInt32("generation", &generation)); 813 if (generation == mPollBufferingGeneration) { 814 onPollBuffering(); 815 } 816 break; 817 } 818 819 case kWhatGetFormat: 820 { 821 onGetFormatMeta(msg); 822 break; 823 } 824 825 case kWhatGetSelectedTrack: 826 { 827 onGetSelectedTrack(msg); 828 break; 829 } 830 831 case kWhatSelectTrack: 832 { 833 onSelectTrack(msg); 834 break; 835 } 836 837 case kWhatSeek: 838 { 839 onSeek(msg); 840 break; 841 } 842 843 case kWhatReadBuffer: 844 { 845 onReadBuffer(msg); 846 break; 847 } 848 849 case kWhatSecureDecodersInstantiated: 850 { 851 int32_t err; 852 CHECK(msg->findInt32("err", &err)); 853 onSecureDecodersInstantiated(err); 854 break; 855 } 856 857 case kWhatStopWidevine: 858 { 859 // mStopRead is only used for Widevine to prevent the video source 860 // from being read while the associated video decoder is shutting down. 861 mStopRead = true; 862 if (mVideoTrack.mSource != NULL) { 863 mVideoTrack.mPackets->clear(); 864 } 865 sp<AMessage> response = new AMessage; 866 sp<AReplyToken> replyID; 867 CHECK(msg->senderAwaitsResponse(&replyID)); 868 response->postReply(replyID); 869 break; 870 } 871 default: 872 Source::onMessageReceived(msg); 873 break; 874 } 875 } 876 877 void NuPlayer::GenericSource::fetchTextData( 878 uint32_t sendWhat, 879 media_track_type type, 880 int32_t curGen, 881 sp<AnotherPacketSource> packets, 882 sp<AMessage> msg) { 883 int32_t msgGeneration; 884 CHECK(msg->findInt32("generation", &msgGeneration)); 885 if (msgGeneration != curGen) { 886 // stale 887 return; 888 } 889 890 int32_t avail; 891 if (packets->hasBufferAvailable(&avail)) { 892 return; 893 } 894 895 int64_t timeUs; 896 CHECK(msg->findInt64("timeUs", &timeUs)); 897 898 int64_t subTimeUs; 899 readBuffer(type, timeUs, &subTimeUs); 900 901 int64_t delayUs = subTimeUs - timeUs; 902 if (msg->what() == kWhatFetchSubtitleData) { 903 const int64_t oneSecUs = 1000000ll; 904 delayUs -= oneSecUs; 905 } 906 sp<AMessage> msg2 = new AMessage(sendWhat, this); 907 msg2->setInt32("generation", msgGeneration); 908 msg2->post(delayUs < 0 ? 0 : delayUs); 909 } 910 911 void NuPlayer::GenericSource::sendTextData( 912 uint32_t what, 913 media_track_type type, 914 int32_t curGen, 915 sp<AnotherPacketSource> packets, 916 sp<AMessage> msg) { 917 int32_t msgGeneration; 918 CHECK(msg->findInt32("generation", &msgGeneration)); 919 if (msgGeneration != curGen) { 920 // stale 921 return; 922 } 923 924 int64_t subTimeUs; 925 if (packets->nextBufferTime(&subTimeUs) != OK) { 926 return; 927 } 928 929 int64_t nextSubTimeUs; 930 readBuffer(type, -1, &nextSubTimeUs); 931 932 sp<ABuffer> buffer; 933 status_t dequeueStatus = packets->dequeueAccessUnit(&buffer); 934 if (dequeueStatus == OK) { 935 sp<AMessage> notify = dupNotify(); 936 notify->setInt32("what", what); 937 notify->setBuffer("buffer", buffer); 938 notify->post(); 939 940 const int64_t delayUs = nextSubTimeUs - subTimeUs; 941 msg->post(delayUs < 0 ? 0 : delayUs); 942 } 943 } 944 945 sp<MetaData> NuPlayer::GenericSource::getFormatMeta(bool audio) { 946 sp<AMessage> msg = new AMessage(kWhatGetFormat, this); 947 msg->setInt32("audio", audio); 948 949 sp<AMessage> response; 950 void *format; 951 status_t err = msg->postAndAwaitResponse(&response); 952 if (err == OK && response != NULL) { 953 CHECK(response->findPointer("format", &format)); 954 return (MetaData *)format; 955 } else { 956 return NULL; 957 } 958 } 959 960 void NuPlayer::GenericSource::onGetFormatMeta(sp<AMessage> msg) const { 961 int32_t audio; 962 CHECK(msg->findInt32("audio", &audio)); 963 964 sp<AMessage> response = new AMessage; 965 sp<MetaData> format = doGetFormatMeta(audio); 966 response->setPointer("format", format.get()); 967 968 sp<AReplyToken> replyID; 969 CHECK(msg->senderAwaitsResponse(&replyID)); 970 response->postReply(replyID); 971 } 972 973 sp<MetaData> NuPlayer::GenericSource::doGetFormatMeta(bool audio) const { 974 sp<MediaSource> source = audio ? mAudioTrack.mSource : mVideoTrack.mSource; 975 976 if (source == NULL) { 977 return NULL; 978 } 979 980 return source->getFormat(); 981 } 982 983 status_t NuPlayer::GenericSource::dequeueAccessUnit( 984 bool audio, sp<ABuffer> *accessUnit) { 985 Track *track = audio ? &mAudioTrack : &mVideoTrack; 986 987 if (track->mSource == NULL) { 988 return -EWOULDBLOCK; 989 } 990 991 if (mIsWidevine && !audio) { 992 // try to read a buffer as we may not have been able to the last time 993 postReadBuffer(MEDIA_TRACK_TYPE_VIDEO); 994 } 995 996 status_t finalResult; 997 if (!track->mPackets->hasBufferAvailable(&finalResult)) { 998 if (finalResult == OK) { 999 postReadBuffer( 1000 audio ? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO); 1001 return -EWOULDBLOCK; 1002 } 1003 return finalResult; 1004 } 1005 1006 status_t result = track->mPackets->dequeueAccessUnit(accessUnit); 1007 1008 // start pulling in more buffers if we only have one (or no) buffer left 1009 // so that decoder has less chance of being starved 1010 if (track->mPackets->getAvailableBufferCount(&finalResult) < 2) { 1011 postReadBuffer(audio? MEDIA_TRACK_TYPE_AUDIO : MEDIA_TRACK_TYPE_VIDEO); 1012 } 1013 1014 if (result != OK) { 1015 if (mSubtitleTrack.mSource != NULL) { 1016 mSubtitleTrack.mPackets->clear(); 1017 mFetchSubtitleDataGeneration++; 1018 } 1019 if (mTimedTextTrack.mSource != NULL) { 1020 mTimedTextTrack.mPackets->clear(); 1021 mFetchTimedTextDataGeneration++; 1022 } 1023 return result; 1024 } 1025 1026 int64_t timeUs; 1027 status_t eosResult; // ignored 1028 CHECK((*accessUnit)->meta()->findInt64("timeUs", &timeUs)); 1029 if (audio) { 1030 mAudioLastDequeueTimeUs = timeUs; 1031 } else { 1032 mVideoLastDequeueTimeUs = timeUs; 1033 } 1034 1035 if (mSubtitleTrack.mSource != NULL 1036 && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) { 1037 sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, this); 1038 msg->setInt64("timeUs", timeUs); 1039 msg->setInt32("generation", mFetchSubtitleDataGeneration); 1040 msg->post(); 1041 } 1042 1043 if (mTimedTextTrack.mSource != NULL 1044 && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) { 1045 sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, this); 1046 msg->setInt64("timeUs", timeUs); 1047 msg->setInt32("generation", mFetchTimedTextDataGeneration); 1048 msg->post(); 1049 } 1050 1051 return result; 1052 } 1053 1054 status_t NuPlayer::GenericSource::getDuration(int64_t *durationUs) { 1055 *durationUs = mDurationUs; 1056 return OK; 1057 } 1058 1059 size_t NuPlayer::GenericSource::getTrackCount() const { 1060 return mSources.size(); 1061 } 1062 1063 sp<AMessage> NuPlayer::GenericSource::getTrackInfo(size_t trackIndex) const { 1064 size_t trackCount = mSources.size(); 1065 if (trackIndex >= trackCount) { 1066 return NULL; 1067 } 1068 1069 sp<AMessage> format = new AMessage(); 1070 sp<MetaData> meta = mSources.itemAt(trackIndex)->getFormat(); 1071 1072 const char *mime; 1073 CHECK(meta->findCString(kKeyMIMEType, &mime)); 1074 format->setString("mime", mime); 1075 1076 int32_t trackType; 1077 if (!strncasecmp(mime, "video/", 6)) { 1078 trackType = MEDIA_TRACK_TYPE_VIDEO; 1079 } else if (!strncasecmp(mime, "audio/", 6)) { 1080 trackType = MEDIA_TRACK_TYPE_AUDIO; 1081 } else if (!strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP)) { 1082 trackType = MEDIA_TRACK_TYPE_TIMEDTEXT; 1083 } else { 1084 trackType = MEDIA_TRACK_TYPE_UNKNOWN; 1085 } 1086 format->setInt32("type", trackType); 1087 1088 const char *lang; 1089 if (!meta->findCString(kKeyMediaLanguage, &lang)) { 1090 lang = "und"; 1091 } 1092 format->setString("language", lang); 1093 1094 if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) { 1095 int32_t isAutoselect = 1, isDefault = 0, isForced = 0; 1096 meta->findInt32(kKeyTrackIsAutoselect, &isAutoselect); 1097 meta->findInt32(kKeyTrackIsDefault, &isDefault); 1098 meta->findInt32(kKeyTrackIsForced, &isForced); 1099 1100 format->setInt32("auto", !!isAutoselect); 1101 format->setInt32("default", !!isDefault); 1102 format->setInt32("forced", !!isForced); 1103 } 1104 1105 return format; 1106 } 1107 1108 ssize_t NuPlayer::GenericSource::getSelectedTrack(media_track_type type) const { 1109 sp<AMessage> msg = new AMessage(kWhatGetSelectedTrack, this); 1110 msg->setInt32("type", type); 1111 1112 sp<AMessage> response; 1113 int32_t index; 1114 status_t err = msg->postAndAwaitResponse(&response); 1115 if (err == OK && response != NULL) { 1116 CHECK(response->findInt32("index", &index)); 1117 return index; 1118 } else { 1119 return -1; 1120 } 1121 } 1122 1123 void NuPlayer::GenericSource::onGetSelectedTrack(sp<AMessage> msg) const { 1124 int32_t tmpType; 1125 CHECK(msg->findInt32("type", &tmpType)); 1126 media_track_type type = (media_track_type)tmpType; 1127 1128 sp<AMessage> response = new AMessage; 1129 ssize_t index = doGetSelectedTrack(type); 1130 response->setInt32("index", index); 1131 1132 sp<AReplyToken> replyID; 1133 CHECK(msg->senderAwaitsResponse(&replyID)); 1134 response->postReply(replyID); 1135 } 1136 1137 ssize_t NuPlayer::GenericSource::doGetSelectedTrack(media_track_type type) const { 1138 const Track *track = NULL; 1139 switch (type) { 1140 case MEDIA_TRACK_TYPE_VIDEO: 1141 track = &mVideoTrack; 1142 break; 1143 case MEDIA_TRACK_TYPE_AUDIO: 1144 track = &mAudioTrack; 1145 break; 1146 case MEDIA_TRACK_TYPE_TIMEDTEXT: 1147 track = &mTimedTextTrack; 1148 break; 1149 case MEDIA_TRACK_TYPE_SUBTITLE: 1150 track = &mSubtitleTrack; 1151 break; 1152 default: 1153 break; 1154 } 1155 1156 if (track != NULL && track->mSource != NULL) { 1157 return track->mIndex; 1158 } 1159 1160 return -1; 1161 } 1162 1163 status_t NuPlayer::GenericSource::selectTrack(size_t trackIndex, bool select, int64_t timeUs) { 1164 ALOGV("%s track: %zu", select ? "select" : "deselect", trackIndex); 1165 sp<AMessage> msg = new AMessage(kWhatSelectTrack, this); 1166 msg->setInt32("trackIndex", trackIndex); 1167 msg->setInt32("select", select); 1168 msg->setInt64("timeUs", timeUs); 1169 1170 sp<AMessage> response; 1171 status_t err = msg->postAndAwaitResponse(&response); 1172 if (err == OK && response != NULL) { 1173 CHECK(response->findInt32("err", &err)); 1174 } 1175 1176 return err; 1177 } 1178 1179 void NuPlayer::GenericSource::onSelectTrack(sp<AMessage> msg) { 1180 int32_t trackIndex, select; 1181 int64_t timeUs; 1182 CHECK(msg->findInt32("trackIndex", &trackIndex)); 1183 CHECK(msg->findInt32("select", &select)); 1184 CHECK(msg->findInt64("timeUs", &timeUs)); 1185 1186 sp<AMessage> response = new AMessage; 1187 status_t err = doSelectTrack(trackIndex, select, timeUs); 1188 response->setInt32("err", err); 1189 1190 sp<AReplyToken> replyID; 1191 CHECK(msg->senderAwaitsResponse(&replyID)); 1192 response->postReply(replyID); 1193 } 1194 1195 status_t NuPlayer::GenericSource::doSelectTrack(size_t trackIndex, bool select, int64_t timeUs) { 1196 if (trackIndex >= mSources.size()) { 1197 return BAD_INDEX; 1198 } 1199 1200 if (!select) { 1201 Track* track = NULL; 1202 if (mSubtitleTrack.mSource != NULL && trackIndex == mSubtitleTrack.mIndex) { 1203 track = &mSubtitleTrack; 1204 mFetchSubtitleDataGeneration++; 1205 } else if (mTimedTextTrack.mSource != NULL && trackIndex == mTimedTextTrack.mIndex) { 1206 track = &mTimedTextTrack; 1207 mFetchTimedTextDataGeneration++; 1208 } 1209 if (track == NULL) { 1210 return INVALID_OPERATION; 1211 } 1212 track->mSource->stop(); 1213 track->mSource = NULL; 1214 track->mPackets->clear(); 1215 return OK; 1216 } 1217 1218 const sp<MediaSource> source = mSources.itemAt(trackIndex); 1219 sp<MetaData> meta = source->getFormat(); 1220 const char *mime; 1221 CHECK(meta->findCString(kKeyMIMEType, &mime)); 1222 if (!strncasecmp(mime, "text/", 5)) { 1223 bool isSubtitle = strcasecmp(mime, MEDIA_MIMETYPE_TEXT_3GPP); 1224 Track *track = isSubtitle ? &mSubtitleTrack : &mTimedTextTrack; 1225 if (track->mSource != NULL && track->mIndex == trackIndex) { 1226 return OK; 1227 } 1228 track->mIndex = trackIndex; 1229 if (track->mSource != NULL) { 1230 track->mSource->stop(); 1231 } 1232 track->mSource = mSources.itemAt(trackIndex); 1233 track->mSource->start(); 1234 if (track->mPackets == NULL) { 1235 track->mPackets = new AnotherPacketSource(track->mSource->getFormat()); 1236 } else { 1237 track->mPackets->clear(); 1238 track->mPackets->setFormat(track->mSource->getFormat()); 1239 1240 } 1241 1242 if (isSubtitle) { 1243 mFetchSubtitleDataGeneration++; 1244 } else { 1245 mFetchTimedTextDataGeneration++; 1246 } 1247 1248 status_t eosResult; // ignored 1249 if (mSubtitleTrack.mSource != NULL 1250 && !mSubtitleTrack.mPackets->hasBufferAvailable(&eosResult)) { 1251 sp<AMessage> msg = new AMessage(kWhatFetchSubtitleData, this); 1252 msg->setInt64("timeUs", timeUs); 1253 msg->setInt32("generation", mFetchSubtitleDataGeneration); 1254 msg->post(); 1255 } 1256 1257 if (mTimedTextTrack.mSource != NULL 1258 && !mTimedTextTrack.mPackets->hasBufferAvailable(&eosResult)) { 1259 sp<AMessage> msg = new AMessage(kWhatFetchTimedTextData, this); 1260 msg->setInt64("timeUs", timeUs); 1261 msg->setInt32("generation", mFetchTimedTextDataGeneration); 1262 msg->post(); 1263 } 1264 1265 return OK; 1266 } else if (!strncasecmp(mime, "audio/", 6) || !strncasecmp(mime, "video/", 6)) { 1267 bool audio = !strncasecmp(mime, "audio/", 6); 1268 Track *track = audio ? &mAudioTrack : &mVideoTrack; 1269 if (track->mSource != NULL && track->mIndex == trackIndex) { 1270 return OK; 1271 } 1272 1273 sp<AMessage> msg = new AMessage(kWhatChangeAVSource, this); 1274 msg->setInt32("trackIndex", trackIndex); 1275 msg->post(); 1276 return OK; 1277 } 1278 1279 return INVALID_OPERATION; 1280 } 1281 1282 status_t NuPlayer::GenericSource::seekTo(int64_t seekTimeUs) { 1283 sp<AMessage> msg = new AMessage(kWhatSeek, this); 1284 msg->setInt64("seekTimeUs", seekTimeUs); 1285 1286 sp<AMessage> response; 1287 status_t err = msg->postAndAwaitResponse(&response); 1288 if (err == OK && response != NULL) { 1289 CHECK(response->findInt32("err", &err)); 1290 } 1291 1292 return err; 1293 } 1294 1295 void NuPlayer::GenericSource::onSeek(sp<AMessage> msg) { 1296 int64_t seekTimeUs; 1297 CHECK(msg->findInt64("seekTimeUs", &seekTimeUs)); 1298 1299 sp<AMessage> response = new AMessage; 1300 status_t err = doSeek(seekTimeUs); 1301 response->setInt32("err", err); 1302 1303 sp<AReplyToken> replyID; 1304 CHECK(msg->senderAwaitsResponse(&replyID)); 1305 response->postReply(replyID); 1306 } 1307 1308 status_t NuPlayer::GenericSource::doSeek(int64_t seekTimeUs) { 1309 // If the Widevine source is stopped, do not attempt to read any 1310 // more buffers. 1311 if (mStopRead) { 1312 return INVALID_OPERATION; 1313 } 1314 if (mVideoTrack.mSource != NULL) { 1315 int64_t actualTimeUs; 1316 readBuffer(MEDIA_TRACK_TYPE_VIDEO, seekTimeUs, &actualTimeUs); 1317 1318 seekTimeUs = actualTimeUs; 1319 mVideoLastDequeueTimeUs = seekTimeUs; 1320 } 1321 1322 if (mAudioTrack.mSource != NULL) { 1323 readBuffer(MEDIA_TRACK_TYPE_AUDIO, seekTimeUs); 1324 mAudioLastDequeueTimeUs = seekTimeUs; 1325 } 1326 1327 setDrmPlaybackStatusIfNeeded(Playback::START, seekTimeUs / 1000); 1328 if (!mStarted) { 1329 setDrmPlaybackStatusIfNeeded(Playback::PAUSE, 0); 1330 } 1331 1332 // If currently buffering, post kWhatBufferingEnd first, so that 1333 // NuPlayer resumes. Otherwise, if cache hits high watermark 1334 // before new polling happens, no one will resume the playback. 1335 stopBufferingIfNecessary(); 1336 restartPollBuffering(); 1337 1338 return OK; 1339 } 1340 1341 sp<ABuffer> NuPlayer::GenericSource::mediaBufferToABuffer( 1342 MediaBuffer* mb, 1343 media_track_type trackType, 1344 int64_t /* seekTimeUs */, 1345 int64_t *actualTimeUs) { 1346 bool audio = trackType == MEDIA_TRACK_TYPE_AUDIO; 1347 size_t outLength = mb->range_length(); 1348 1349 if (audio && mAudioIsVorbis) { 1350 outLength += sizeof(int32_t); 1351 } 1352 1353 sp<ABuffer> ab; 1354 if (mIsSecure && !audio) { 1355 // data is already provided in the buffer 1356 ab = new ABuffer(NULL, mb->range_length()); 1357 mb->add_ref(); 1358 ab->setMediaBufferBase(mb); 1359 } else { 1360 ab = new ABuffer(outLength); 1361 memcpy(ab->data(), 1362 (const uint8_t *)mb->data() + mb->range_offset(), 1363 mb->range_length()); 1364 } 1365 1366 if (audio && mAudioIsVorbis) { 1367 int32_t numPageSamples; 1368 if (!mb->meta_data()->findInt32(kKeyValidSamples, &numPageSamples)) { 1369 numPageSamples = -1; 1370 } 1371 1372 uint8_t* abEnd = ab->data() + mb->range_length(); 1373 memcpy(abEnd, &numPageSamples, sizeof(numPageSamples)); 1374 } 1375 1376 sp<AMessage> meta = ab->meta(); 1377 1378 int64_t timeUs; 1379 CHECK(mb->meta_data()->findInt64(kKeyTime, &timeUs)); 1380 meta->setInt64("timeUs", timeUs); 1381 1382 #if 0 1383 // Temporarily disable pre-roll till we have a full solution to handle 1384 // both single seek and continous seek gracefully. 1385 if (seekTimeUs > timeUs) { 1386 sp<AMessage> extra = new AMessage; 1387 extra->setInt64("resume-at-mediaTimeUs", seekTimeUs); 1388 meta->setMessage("extra", extra); 1389 } 1390 #endif 1391 1392 if (trackType == MEDIA_TRACK_TYPE_TIMEDTEXT) { 1393 const char *mime; 1394 CHECK(mTimedTextTrack.mSource != NULL 1395 && mTimedTextTrack.mSource->getFormat()->findCString(kKeyMIMEType, &mime)); 1396 meta->setString("mime", mime); 1397 } 1398 1399 int64_t durationUs; 1400 if (mb->meta_data()->findInt64(kKeyDuration, &durationUs)) { 1401 meta->setInt64("durationUs", durationUs); 1402 } 1403 1404 if (trackType == MEDIA_TRACK_TYPE_SUBTITLE) { 1405 meta->setInt32("trackIndex", mSubtitleTrack.mIndex); 1406 } 1407 1408 uint32_t dataType; // unused 1409 const void *seiData; 1410 size_t seiLength; 1411 if (mb->meta_data()->findData(kKeySEI, &dataType, &seiData, &seiLength)) { 1412 sp<ABuffer> sei = ABuffer::CreateAsCopy(seiData, seiLength);; 1413 meta->setBuffer("sei", sei); 1414 } 1415 1416 if (actualTimeUs) { 1417 *actualTimeUs = timeUs; 1418 } 1419 1420 mb->release(); 1421 mb = NULL; 1422 1423 return ab; 1424 } 1425 1426 void NuPlayer::GenericSource::postReadBuffer(media_track_type trackType) { 1427 Mutex::Autolock _l(mReadBufferLock); 1428 1429 if ((mPendingReadBufferTypes & (1 << trackType)) == 0) { 1430 mPendingReadBufferTypes |= (1 << trackType); 1431 sp<AMessage> msg = new AMessage(kWhatReadBuffer, this); 1432 msg->setInt32("trackType", trackType); 1433 msg->post(); 1434 } 1435 } 1436 1437 void NuPlayer::GenericSource::onReadBuffer(sp<AMessage> msg) { 1438 int32_t tmpType; 1439 CHECK(msg->findInt32("trackType", &tmpType)); 1440 media_track_type trackType = (media_track_type)tmpType; 1441 readBuffer(trackType); 1442 { 1443 // only protect the variable change, as readBuffer may 1444 // take considerable time. 1445 Mutex::Autolock _l(mReadBufferLock); 1446 mPendingReadBufferTypes &= ~(1 << trackType); 1447 } 1448 } 1449 1450 void NuPlayer::GenericSource::readBuffer( 1451 media_track_type trackType, int64_t seekTimeUs, int64_t *actualTimeUs, bool formatChange) { 1452 // Do not read data if Widevine source is stopped 1453 if (mStopRead) { 1454 return; 1455 } 1456 Track *track; 1457 size_t maxBuffers = 1; 1458 switch (trackType) { 1459 case MEDIA_TRACK_TYPE_VIDEO: 1460 track = &mVideoTrack; 1461 if (mIsWidevine) { 1462 maxBuffers = 2; 1463 } else { 1464 maxBuffers = 4; 1465 } 1466 break; 1467 case MEDIA_TRACK_TYPE_AUDIO: 1468 track = &mAudioTrack; 1469 if (mIsWidevine) { 1470 maxBuffers = 8; 1471 } else { 1472 maxBuffers = 64; 1473 } 1474 break; 1475 case MEDIA_TRACK_TYPE_SUBTITLE: 1476 track = &mSubtitleTrack; 1477 break; 1478 case MEDIA_TRACK_TYPE_TIMEDTEXT: 1479 track = &mTimedTextTrack; 1480 break; 1481 default: 1482 TRESPASS(); 1483 } 1484 1485 if (track->mSource == NULL) { 1486 return; 1487 } 1488 1489 if (actualTimeUs) { 1490 *actualTimeUs = seekTimeUs; 1491 } 1492 1493 MediaSource::ReadOptions options; 1494 1495 bool seeking = false; 1496 1497 if (seekTimeUs >= 0) { 1498 options.setSeekTo(seekTimeUs, MediaSource::ReadOptions::SEEK_PREVIOUS_SYNC); 1499 seeking = true; 1500 } 1501 1502 if (mIsWidevine) { 1503 options.setNonBlocking(); 1504 } 1505 1506 for (size_t numBuffers = 0; numBuffers < maxBuffers; ) { 1507 MediaBuffer *mbuf; 1508 status_t err = track->mSource->read(&mbuf, &options); 1509 1510 options.clearSeekTo(); 1511 1512 if (err == OK) { 1513 int64_t timeUs; 1514 CHECK(mbuf->meta_data()->findInt64(kKeyTime, &timeUs)); 1515 if (trackType == MEDIA_TRACK_TYPE_AUDIO) { 1516 mAudioTimeUs = timeUs; 1517 } else if (trackType == MEDIA_TRACK_TYPE_VIDEO) { 1518 mVideoTimeUs = timeUs; 1519 } 1520 1521 queueDiscontinuityIfNeeded(seeking, formatChange, trackType, track); 1522 1523 sp<ABuffer> buffer = mediaBufferToABuffer( 1524 mbuf, trackType, seekTimeUs, actualTimeUs); 1525 track->mPackets->queueAccessUnit(buffer); 1526 formatChange = false; 1527 seeking = false; 1528 ++numBuffers; 1529 } else if (err == WOULD_BLOCK) { 1530 break; 1531 } else if (err == INFO_FORMAT_CHANGED) { 1532 #if 0 1533 track->mPackets->queueDiscontinuity( 1534 ATSParser::DISCONTINUITY_FORMATCHANGE, 1535 NULL, 1536 false /* discard */); 1537 #endif 1538 } else { 1539 queueDiscontinuityIfNeeded(seeking, formatChange, trackType, track); 1540 track->mPackets->signalEOS(err); 1541 break; 1542 } 1543 } 1544 } 1545 1546 void NuPlayer::GenericSource::queueDiscontinuityIfNeeded( 1547 bool seeking, bool formatChange, media_track_type trackType, Track *track) { 1548 // formatChange && seeking: track whose source is changed during selection 1549 // formatChange && !seeking: track whose source is not changed during selection 1550 // !formatChange: normal seek 1551 if ((seeking || formatChange) 1552 && (trackType == MEDIA_TRACK_TYPE_AUDIO 1553 || trackType == MEDIA_TRACK_TYPE_VIDEO)) { 1554 ATSParser::DiscontinuityType type = (formatChange && seeking) 1555 ? ATSParser::DISCONTINUITY_FORMATCHANGE 1556 : ATSParser::DISCONTINUITY_NONE; 1557 track->mPackets->queueDiscontinuity(type, NULL /* extra */, true /* discard */); 1558 } 1559 } 1560 1561 } // namespace android 1562