1/* 2 * Copyright 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 "NuMediaExtractor" 19#include <utils/Log.h> 20 21#include <media/stagefright/NuMediaExtractor.h> 22 23#include "include/ESDS.h" 24#include "include/NuCachedSource2.h" 25#include "include/WVMExtractor.h" 26 27#include <media/stagefright/foundation/ABuffer.h> 28#include <media/stagefright/foundation/ADebug.h> 29#include <media/stagefright/foundation/AMessage.h> 30#include <media/stagefright/DataSource.h> 31#include <media/stagefright/FileSource.h> 32#include <media/stagefright/MediaBuffer.h> 33#include <media/stagefright/MediaDefs.h> 34#include <media/stagefright/MediaErrors.h> 35#include <media/stagefright/MediaExtractor.h> 36#include <media/stagefright/MediaSource.h> 37#include <media/stagefright/MetaData.h> 38#include <media/stagefright/Utils.h> 39 40namespace android { 41 42NuMediaExtractor::NuMediaExtractor() 43 : mIsWidevineExtractor(false), 44 mTotalBitrate(-1ll), 45 mDurationUs(-1ll) { 46} 47 48NuMediaExtractor::~NuMediaExtractor() { 49 releaseTrackSamples(); 50 51 for (size_t i = 0; i < mSelectedTracks.size(); ++i) { 52 TrackInfo *info = &mSelectedTracks.editItemAt(i); 53 54 CHECK_EQ((status_t)OK, info->mSource->stop()); 55 } 56 57 mSelectedTracks.clear(); 58 if (mDataSource != NULL) { 59 mDataSource->close(); 60 } 61} 62 63status_t NuMediaExtractor::setDataSource( 64 const sp<IMediaHTTPService> &httpService, 65 const char *path, 66 const KeyedVector<String8, String8> *headers) { 67 Mutex::Autolock autoLock(mLock); 68 69 if (mImpl != NULL) { 70 return -EINVAL; 71 } 72 73 sp<DataSource> dataSource = 74 DataSource::CreateFromURI(httpService, path, headers); 75 76 if (dataSource == NULL) { 77 return -ENOENT; 78 } 79 80 mIsWidevineExtractor = false; 81 if (!strncasecmp("widevine://", path, 11)) { 82 String8 mimeType; 83 float confidence; 84 sp<AMessage> dummy; 85 bool success = SniffWVM(dataSource, &mimeType, &confidence, &dummy); 86 87 if (!success 88 || strcasecmp( 89 mimeType.string(), MEDIA_MIMETYPE_CONTAINER_WVM)) { 90 return ERROR_UNSUPPORTED; 91 } 92 93 sp<WVMExtractor> extractor = new WVMExtractor(dataSource); 94 extractor->setAdaptiveStreamingMode(true); 95 96 mImpl = extractor; 97 mIsWidevineExtractor = true; 98 } else { 99 mImpl = MediaExtractor::Create(dataSource); 100 } 101 102 if (mImpl == NULL) { 103 return ERROR_UNSUPPORTED; 104 } 105 106 sp<MetaData> fileMeta = mImpl->getMetaData(); 107 const char *containerMime; 108 if (fileMeta != NULL 109 && fileMeta->findCString(kKeyMIMEType, &containerMime) 110 && !strcasecmp(containerMime, "video/wvm")) { 111 // We always want to use "cryptoPluginMode" when using the wvm 112 // extractor. We can tell that it is this extractor by looking 113 // at the container mime type. 114 // The cryptoPluginMode ensures that the extractor will actually 115 // give us data in a call to MediaSource::read(), unlike its 116 // default mode that we used in AwesomePlayer. 117 // TODO: change default mode 118 static_cast<WVMExtractor *>(mImpl.get())->setCryptoPluginMode(true); 119 } else if (mImpl->getDrmFlag()) { 120 // For all other drm content, we don't want to expose decrypted 121 // content to Java application. 122 mImpl.clear(); 123 mImpl = NULL; 124 return ERROR_UNSUPPORTED; 125 } 126 127 status_t err = updateDurationAndBitrate(); 128 if (err == OK) { 129 mDataSource = dataSource; 130 } 131 132 return OK; 133} 134 135status_t NuMediaExtractor::setDataSource(int fd, off64_t offset, off64_t size) { 136 137 ALOGV("setDataSource fd=%d (%s), offset=%lld, length=%lld", 138 fd, nameForFd(fd).c_str(), (long long) offset, (long long) size); 139 140 Mutex::Autolock autoLock(mLock); 141 142 if (mImpl != NULL) { 143 return -EINVAL; 144 } 145 146 sp<FileSource> fileSource = new FileSource(dup(fd), offset, size); 147 148 status_t err = fileSource->initCheck(); 149 if (err != OK) { 150 return err; 151 } 152 153 mImpl = MediaExtractor::Create(fileSource); 154 155 if (mImpl == NULL) { 156 return ERROR_UNSUPPORTED; 157 } 158 159 err = updateDurationAndBitrate(); 160 if (err == OK) { 161 mDataSource = fileSource; 162 } 163 164 return OK; 165} 166 167status_t NuMediaExtractor::setDataSource(const sp<DataSource> &source) { 168 Mutex::Autolock autoLock(mLock); 169 170 if (mImpl != NULL) { 171 return -EINVAL; 172 } 173 174 status_t err = source->initCheck(); 175 if (err != OK) { 176 return err; 177 } 178 179 mImpl = MediaExtractor::Create(source); 180 181 if (mImpl == NULL) { 182 return ERROR_UNSUPPORTED; 183 } 184 185 err = updateDurationAndBitrate(); 186 if (err == OK) { 187 mDataSource = source; 188 } 189 190 return err; 191} 192 193status_t NuMediaExtractor::updateDurationAndBitrate() { 194 if (mImpl->countTracks() > kMaxTrackCount) { 195 return ERROR_UNSUPPORTED; 196 } 197 198 mTotalBitrate = 0ll; 199 mDurationUs = -1ll; 200 201 for (size_t i = 0; i < mImpl->countTracks(); ++i) { 202 sp<MetaData> meta = mImpl->getTrackMetaData(i); 203 if (meta == NULL) { 204 ALOGW("no metadata for track %zu", i); 205 continue; 206 } 207 208 int32_t bitrate; 209 if (!meta->findInt32(kKeyBitRate, &bitrate)) { 210 const char *mime; 211 CHECK(meta->findCString(kKeyMIMEType, &mime)); 212 ALOGV("track of type '%s' does not publish bitrate", mime); 213 214 mTotalBitrate = -1ll; 215 } else if (mTotalBitrate >= 0ll) { 216 mTotalBitrate += bitrate; 217 } 218 219 int64_t durationUs; 220 if (meta->findInt64(kKeyDuration, &durationUs) 221 && durationUs > mDurationUs) { 222 mDurationUs = durationUs; 223 } 224 } 225 return OK; 226} 227 228size_t NuMediaExtractor::countTracks() const { 229 Mutex::Autolock autoLock(mLock); 230 231 return mImpl == NULL ? 0 : mImpl->countTracks(); 232} 233 234status_t NuMediaExtractor::getTrackFormat( 235 size_t index, sp<AMessage> *format, uint32_t flags) const { 236 Mutex::Autolock autoLock(mLock); 237 238 *format = NULL; 239 240 if (mImpl == NULL) { 241 return -EINVAL; 242 } 243 244 if (index >= mImpl->countTracks()) { 245 return -ERANGE; 246 } 247 248 sp<MetaData> meta = mImpl->getTrackMetaData(index, flags); 249 // Extractors either support trackID-s or not, so either all tracks have trackIDs or none. 250 // Generate trackID if missing. 251 int32_t trackID; 252 if (meta != NULL && !meta->findInt32(kKeyTrackID, &trackID)) { 253 meta->setInt32(kKeyTrackID, (int32_t)index + 1); 254 } 255 return convertMetaDataToMessage(meta, format); 256} 257 258status_t NuMediaExtractor::getFileFormat(sp<AMessage> *format) const { 259 Mutex::Autolock autoLock(mLock); 260 261 *format = NULL; 262 263 if (mImpl == NULL) { 264 return -EINVAL; 265 } 266 267 sp<MetaData> meta = mImpl->getMetaData(); 268 269 const char *mime; 270 CHECK(meta->findCString(kKeyMIMEType, &mime)); 271 *format = new AMessage(); 272 (*format)->setString("mime", mime); 273 274 uint32_t type; 275 const void *pssh; 276 size_t psshsize; 277 if (meta->findData(kKeyPssh, &type, &pssh, &psshsize)) { 278 sp<ABuffer> buf = new ABuffer(psshsize); 279 memcpy(buf->data(), pssh, psshsize); 280 (*format)->setBuffer("pssh", buf); 281 } 282 283 return OK; 284} 285 286status_t NuMediaExtractor::selectTrack(size_t index) { 287 Mutex::Autolock autoLock(mLock); 288 289 if (mImpl == NULL) { 290 return -EINVAL; 291 } 292 293 if (index >= mImpl->countTracks()) { 294 return -ERANGE; 295 } 296 297 for (size_t i = 0; i < mSelectedTracks.size(); ++i) { 298 TrackInfo *info = &mSelectedTracks.editItemAt(i); 299 300 if (info->mTrackIndex == index) { 301 // This track has already been selected. 302 return OK; 303 } 304 } 305 306 sp<IMediaSource> source = mImpl->getTrack(index); 307 308 CHECK_EQ((status_t)OK, source->start()); 309 310 mSelectedTracks.push(); 311 TrackInfo *info = &mSelectedTracks.editItemAt(mSelectedTracks.size() - 1); 312 313 info->mSource = source; 314 info->mTrackIndex = index; 315 info->mFinalResult = OK; 316 info->mSample = NULL; 317 info->mSampleTimeUs = -1ll; 318 info->mTrackFlags = 0; 319 320 const char *mime; 321 CHECK(source->getFormat()->findCString(kKeyMIMEType, &mime)); 322 323 if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_VORBIS)) { 324 info->mTrackFlags |= kIsVorbis; 325 } 326 327 return OK; 328} 329 330status_t NuMediaExtractor::unselectTrack(size_t index) { 331 Mutex::Autolock autoLock(mLock); 332 333 if (mImpl == NULL) { 334 return -EINVAL; 335 } 336 337 if (index >= mImpl->countTracks()) { 338 return -ERANGE; 339 } 340 341 size_t i; 342 for (i = 0; i < mSelectedTracks.size(); ++i) { 343 TrackInfo *info = &mSelectedTracks.editItemAt(i); 344 345 if (info->mTrackIndex == index) { 346 break; 347 } 348 } 349 350 if (i == mSelectedTracks.size()) { 351 // Not selected. 352 return OK; 353 } 354 355 TrackInfo *info = &mSelectedTracks.editItemAt(i); 356 357 if (info->mSample != NULL) { 358 info->mSample->release(); 359 info->mSample = NULL; 360 361 info->mSampleTimeUs = -1ll; 362 } 363 364 CHECK_EQ((status_t)OK, info->mSource->stop()); 365 366 mSelectedTracks.removeAt(i); 367 368 return OK; 369} 370 371void NuMediaExtractor::releaseTrackSamples() { 372 for (size_t i = 0; i < mSelectedTracks.size(); ++i) { 373 TrackInfo *info = &mSelectedTracks.editItemAt(i); 374 375 if (info->mSample != NULL) { 376 info->mSample->release(); 377 info->mSample = NULL; 378 379 info->mSampleTimeUs = -1ll; 380 } 381 } 382} 383 384ssize_t NuMediaExtractor::fetchTrackSamples( 385 int64_t seekTimeUs, MediaSource::ReadOptions::SeekMode mode) { 386 TrackInfo *minInfo = NULL; 387 ssize_t minIndex = -1; 388 389 for (size_t i = 0; i < mSelectedTracks.size(); ++i) { 390 TrackInfo *info = &mSelectedTracks.editItemAt(i); 391 392 if (seekTimeUs >= 0ll) { 393 info->mFinalResult = OK; 394 395 if (info->mSample != NULL) { 396 info->mSample->release(); 397 info->mSample = NULL; 398 info->mSampleTimeUs = -1ll; 399 } 400 } else if (info->mFinalResult != OK) { 401 continue; 402 } 403 404 if (info->mSample == NULL) { 405 MediaSource::ReadOptions options; 406 if (seekTimeUs >= 0ll) { 407 options.setSeekTo(seekTimeUs, mode); 408 } 409 status_t err = info->mSource->read(&info->mSample, &options); 410 411 if (err != OK) { 412 CHECK(info->mSample == NULL); 413 414 info->mFinalResult = err; 415 416 if (info->mFinalResult != ERROR_END_OF_STREAM) { 417 ALOGW("read on track %zu failed with error %d", 418 info->mTrackIndex, err); 419 } 420 421 info->mSampleTimeUs = -1ll; 422 continue; 423 } else { 424 CHECK(info->mSample != NULL); 425 CHECK(info->mSample->meta_data()->findInt64( 426 kKeyTime, &info->mSampleTimeUs)); 427 } 428 } 429 430 if (minInfo == NULL || info->mSampleTimeUs < minInfo->mSampleTimeUs) { 431 minInfo = info; 432 minIndex = i; 433 } 434 } 435 436 return minIndex; 437} 438 439status_t NuMediaExtractor::seekTo( 440 int64_t timeUs, MediaSource::ReadOptions::SeekMode mode) { 441 Mutex::Autolock autoLock(mLock); 442 443 ssize_t minIndex = fetchTrackSamples(timeUs, mode); 444 445 if (minIndex < 0) { 446 return ERROR_END_OF_STREAM; 447 } 448 449 return OK; 450} 451 452status_t NuMediaExtractor::advance() { 453 Mutex::Autolock autoLock(mLock); 454 455 ssize_t minIndex = fetchTrackSamples(); 456 457 if (minIndex < 0) { 458 return ERROR_END_OF_STREAM; 459 } 460 461 TrackInfo *info = &mSelectedTracks.editItemAt(minIndex); 462 463 info->mSample->release(); 464 info->mSample = NULL; 465 info->mSampleTimeUs = -1ll; 466 467 return OK; 468} 469 470status_t NuMediaExtractor::appendVorbisNumPageSamples(TrackInfo *info, const sp<ABuffer> &buffer) { 471 int32_t numPageSamples; 472 if (!info->mSample->meta_data()->findInt32( 473 kKeyValidSamples, &numPageSamples)) { 474 numPageSamples = -1; 475 } 476 477 memcpy((uint8_t *)buffer->data() + info->mSample->range_length(), 478 &numPageSamples, 479 sizeof(numPageSamples)); 480 481 uint32_t type; 482 const void *data; 483 size_t size, size2; 484 if (info->mSample->meta_data()->findData(kKeyEncryptedSizes, &type, &data, &size)) { 485 // Signal numPageSamples (a plain int32_t) is appended at the end, 486 // i.e. sizeof(numPageSamples) plain bytes + 0 encrypted bytes 487 if (SIZE_MAX - size < sizeof(int32_t)) { 488 return -ENOMEM; 489 } 490 491 size_t newSize = size + sizeof(int32_t); 492 sp<ABuffer> abuf = new ABuffer(newSize); 493 uint8_t *adata = static_cast<uint8_t *>(abuf->data()); 494 if (adata == NULL) { 495 return -ENOMEM; 496 } 497 498 // append 0 to encrypted sizes 499 int32_t zero = 0; 500 memcpy(adata, data, size); 501 memcpy(adata + size, &zero, sizeof(zero)); 502 info->mSample->meta_data()->setData(kKeyEncryptedSizes, type, adata, newSize); 503 504 if (info->mSample->meta_data()->findData(kKeyPlainSizes, &type, &data, &size2)) { 505 if (size2 != size) { 506 return ERROR_MALFORMED; 507 } 508 memcpy(adata, data, size); 509 } else { 510 // if sample meta data does not include plain size array, assume filled with zeros, 511 // i.e. entire buffer is encrypted 512 memset(adata, 0, size); 513 } 514 // append sizeof(numPageSamples) to plain sizes. 515 int32_t int32Size = sizeof(numPageSamples); 516 memcpy(adata + size, &int32Size, sizeof(int32Size)); 517 info->mSample->meta_data()->setData(kKeyPlainSizes, type, adata, newSize); 518 } 519 520 return OK; 521} 522 523status_t NuMediaExtractor::readSampleData(const sp<ABuffer> &buffer) { 524 Mutex::Autolock autoLock(mLock); 525 526 ssize_t minIndex = fetchTrackSamples(); 527 528 if (minIndex < 0) { 529 return ERROR_END_OF_STREAM; 530 } 531 532 TrackInfo *info = &mSelectedTracks.editItemAt(minIndex); 533 534 size_t sampleSize = info->mSample->range_length(); 535 536 if (info->mTrackFlags & kIsVorbis) { 537 // Each sample's data is suffixed by the number of page samples 538 // or -1 if not available. 539 sampleSize += sizeof(int32_t); 540 } 541 542 if (buffer->capacity() < sampleSize) { 543 return -ENOMEM; 544 } 545 546 const uint8_t *src = 547 (const uint8_t *)info->mSample->data() 548 + info->mSample->range_offset(); 549 550 memcpy((uint8_t *)buffer->data(), src, info->mSample->range_length()); 551 552 status_t err = OK; 553 if (info->mTrackFlags & kIsVorbis) { 554 err = appendVorbisNumPageSamples(info, buffer); 555 } 556 557 if (err == OK) { 558 buffer->setRange(0, sampleSize); 559 } 560 561 return err; 562} 563 564status_t NuMediaExtractor::getSampleTrackIndex(size_t *trackIndex) { 565 Mutex::Autolock autoLock(mLock); 566 567 ssize_t minIndex = fetchTrackSamples(); 568 569 if (minIndex < 0) { 570 return ERROR_END_OF_STREAM; 571 } 572 573 TrackInfo *info = &mSelectedTracks.editItemAt(minIndex); 574 *trackIndex = info->mTrackIndex; 575 576 return OK; 577} 578 579status_t NuMediaExtractor::getSampleTime(int64_t *sampleTimeUs) { 580 Mutex::Autolock autoLock(mLock); 581 582 ssize_t minIndex = fetchTrackSamples(); 583 584 if (minIndex < 0) { 585 return ERROR_END_OF_STREAM; 586 } 587 588 TrackInfo *info = &mSelectedTracks.editItemAt(minIndex); 589 *sampleTimeUs = info->mSampleTimeUs; 590 591 return OK; 592} 593 594status_t NuMediaExtractor::getSampleMeta(sp<MetaData> *sampleMeta) { 595 Mutex::Autolock autoLock(mLock); 596 597 *sampleMeta = NULL; 598 599 ssize_t minIndex = fetchTrackSamples(); 600 601 if (minIndex < 0) { 602 return ERROR_END_OF_STREAM; 603 } 604 605 TrackInfo *info = &mSelectedTracks.editItemAt(minIndex); 606 *sampleMeta = info->mSample->meta_data(); 607 608 return OK; 609} 610 611bool NuMediaExtractor::getTotalBitrate(int64_t *bitrate) const { 612 if (mTotalBitrate >= 0) { 613 *bitrate = mTotalBitrate; 614 return true; 615 } 616 617 off64_t size; 618 if (mDurationUs >= 0 && mDataSource->getSize(&size) == OK) { 619 *bitrate = size * 8000000ll / mDurationUs; // in bits/sec 620 return true; 621 } 622 623 return false; 624} 625 626// Returns true iff cached duration is available/applicable. 627bool NuMediaExtractor::getCachedDuration( 628 int64_t *durationUs, bool *eos) const { 629 Mutex::Autolock autoLock(mLock); 630 631 int64_t bitrate; 632 if (mIsWidevineExtractor) { 633 sp<WVMExtractor> wvmExtractor = 634 static_cast<WVMExtractor *>(mImpl.get()); 635 636 status_t finalStatus; 637 *durationUs = wvmExtractor->getCachedDurationUs(&finalStatus); 638 *eos = (finalStatus != OK); 639 return true; 640 } else if ((mDataSource->flags() & DataSource::kIsCachingDataSource) 641 && getTotalBitrate(&bitrate)) { 642 sp<NuCachedSource2> cachedSource = 643 static_cast<NuCachedSource2 *>(mDataSource.get()); 644 645 status_t finalStatus; 646 size_t cachedDataRemaining = 647 cachedSource->approxDataRemaining(&finalStatus); 648 649 *durationUs = cachedDataRemaining * 8000000ll / bitrate; 650 *eos = (finalStatus != OK); 651 return true; 652 } 653 654 return false; 655} 656 657} // namespace android 658