NuPlayerDecoder.cpp revision 81e50d0c782cc18eab4ef40ecd6c7f36df50fea5
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 "NuPlayerDecoder" 19#include <utils/Log.h> 20#include <inttypes.h> 21 22#include "NuPlayerDecoder.h" 23 24#include <media/ICrypto.h> 25#include <media/stagefright/foundation/ABitReader.h> 26#include <media/stagefright/foundation/ABuffer.h> 27#include <media/stagefright/foundation/ADebug.h> 28#include <media/stagefright/foundation/AMessage.h> 29#include <media/stagefright/MediaBuffer.h> 30#include <media/stagefright/MediaCodec.h> 31#include <media/stagefright/MediaDefs.h> 32#include <media/stagefright/MediaErrors.h> 33 34namespace android { 35 36NuPlayer::Decoder::Decoder( 37 const sp<AMessage> ¬ify, 38 const sp<NativeWindowWrapper> &nativeWindow) 39 : mNotify(notify), 40 mNativeWindow(nativeWindow), 41 mBufferGeneration(0), 42 mPaused(true), 43 mComponentName("decoder") { 44 // Every decoder has its own looper because MediaCodec operations 45 // are blocking, but NuPlayer needs asynchronous operations. 46 mDecoderLooper = new ALooper; 47 mDecoderLooper->setName("NuPlayerDecoder"); 48 mDecoderLooper->start(false, false, ANDROID_PRIORITY_AUDIO); 49 50 mCodecLooper = new ALooper; 51 mCodecLooper->setName("NuPlayerDecoder-MC"); 52 mCodecLooper->start(false, false, ANDROID_PRIORITY_AUDIO); 53} 54 55NuPlayer::Decoder::~Decoder() { 56} 57 58static 59status_t PostAndAwaitResponse( 60 const sp<AMessage> &msg, sp<AMessage> *response) { 61 status_t err = msg->postAndAwaitResponse(response); 62 63 if (err != OK) { 64 return err; 65 } 66 67 if (!(*response)->findInt32("err", &err)) { 68 err = OK; 69 } 70 71 return err; 72} 73 74void NuPlayer::Decoder::onConfigure(const sp<AMessage> &format) { 75 CHECK(mCodec == NULL); 76 77 ++mBufferGeneration; 78 79 AString mime; 80 CHECK(format->findString("mime", &mime)); 81 82 sp<Surface> surface = NULL; 83 if (mNativeWindow != NULL) { 84 surface = mNativeWindow->getSurfaceTextureClient(); 85 } 86 87 mComponentName = mime; 88 mComponentName.append(" decoder"); 89 ALOGV("[%s] onConfigure (surface=%p)", mComponentName.c_str(), surface.get()); 90 91 mCodec = MediaCodec::CreateByType(mCodecLooper, mime.c_str(), false /* encoder */); 92 int32_t secure = 0; 93 if (format->findInt32("secure", &secure) && secure != 0) { 94 if (mCodec != NULL) { 95 mCodec->getName(&mComponentName); 96 mComponentName.append(".secure"); 97 mCodec->release(); 98 ALOGI("[%s] creating", mComponentName.c_str()); 99 mCodec = MediaCodec::CreateByComponentName( 100 mCodecLooper, mComponentName.c_str()); 101 } 102 } 103 if (mCodec == NULL) { 104 ALOGE("Failed to create %s%s decoder", 105 (secure ? "secure " : ""), mime.c_str()); 106 handleError(UNKNOWN_ERROR); 107 return; 108 } 109 110 mCodec->getName(&mComponentName); 111 112 if (mNativeWindow != NULL) { 113 // disconnect from surface as MediaCodec will reconnect 114 CHECK_EQ((int)NO_ERROR, 115 native_window_api_disconnect( 116 surface.get(), 117 NATIVE_WINDOW_API_MEDIA)); 118 } 119 status_t err = mCodec->configure( 120 format, surface, NULL /* crypto */, 0 /* flags */); 121 if (err != OK) { 122 ALOGE("Failed to configure %s decoder (err=%d)", mComponentName.c_str(), err); 123 handleError(err); 124 return; 125 } 126 // the following should work in configured state 127 CHECK_EQ((status_t)OK, mCodec->getOutputFormat(&mOutputFormat)); 128 CHECK_EQ((status_t)OK, mCodec->getInputFormat(&mInputFormat)); 129 130 err = mCodec->start(); 131 if (err != OK) { 132 ALOGE("Failed to start %s decoder (err=%d)", mComponentName.c_str(), err); 133 handleError(err); 134 return; 135 } 136 137 // the following should work after start 138 CHECK_EQ((status_t)OK, mCodec->getInputBuffers(&mInputBuffers)); 139 releaseAndResetMediaBuffers(); 140 CHECK_EQ((status_t)OK, mCodec->getOutputBuffers(&mOutputBuffers)); 141 ALOGV("[%s] got %zu input and %zu output buffers", 142 mComponentName.c_str(), 143 mInputBuffers.size(), 144 mOutputBuffers.size()); 145 146 requestCodecNotification(); 147 mPaused = false; 148} 149 150void NuPlayer::Decoder::releaseAndResetMediaBuffers() { 151 for (size_t i = 0; i < mMediaBuffers.size(); i++) { 152 if (mMediaBuffers[i] != NULL) { 153 mMediaBuffers[i]->release(); 154 mMediaBuffers.editItemAt(i) = NULL; 155 } 156 } 157 mMediaBuffers.resize(mInputBuffers.size()); 158 for (size_t i = 0; i < mMediaBuffers.size(); i++) { 159 mMediaBuffers.editItemAt(i) = NULL; 160 } 161 mInputBufferIsDequeued.clear(); 162 mInputBufferIsDequeued.resize(mInputBuffers.size()); 163 for (size_t i = 0; i < mInputBufferIsDequeued.size(); i++) { 164 mInputBufferIsDequeued.editItemAt(i) = false; 165 } 166} 167 168void NuPlayer::Decoder::requestCodecNotification() { 169 if (mCodec != NULL) { 170 sp<AMessage> reply = new AMessage(kWhatCodecNotify, id()); 171 reply->setInt32("generation", mBufferGeneration); 172 mCodec->requestActivityNotification(reply); 173 } 174} 175 176bool NuPlayer::Decoder::isStaleReply(const sp<AMessage> &msg) { 177 int32_t generation; 178 CHECK(msg->findInt32("generation", &generation)); 179 return generation != mBufferGeneration; 180} 181 182void NuPlayer::Decoder::init() { 183 mDecoderLooper->registerHandler(this); 184} 185 186void NuPlayer::Decoder::configure(const sp<AMessage> &format) { 187 sp<AMessage> msg = new AMessage(kWhatConfigure, id()); 188 msg->setMessage("format", format); 189 msg->post(); 190} 191 192status_t NuPlayer::Decoder::getInputBuffers(Vector<sp<ABuffer> > *buffers) const { 193 sp<AMessage> msg = new AMessage(kWhatGetInputBuffers, id()); 194 msg->setPointer("buffers", buffers); 195 196 sp<AMessage> response; 197 return PostAndAwaitResponse(msg, &response); 198} 199 200void NuPlayer::Decoder::handleError(int32_t err) 201{ 202 sp<AMessage> notify = mNotify->dup(); 203 notify->setInt32("what", kWhatError); 204 notify->setInt32("err", err); 205 notify->post(); 206} 207 208bool NuPlayer::Decoder::handleAnInputBuffer() { 209 size_t bufferIx = -1; 210 status_t res = mCodec->dequeueInputBuffer(&bufferIx); 211 ALOGV("[%s] dequeued input: %d", 212 mComponentName.c_str(), res == OK ? (int)bufferIx : res); 213 if (res != OK) { 214 if (res != -EAGAIN) { 215 handleError(res); 216 } 217 return false; 218 } 219 220 CHECK_LT(bufferIx, mInputBuffers.size()); 221 222 if (mMediaBuffers[bufferIx] != NULL) { 223 mMediaBuffers[bufferIx]->release(); 224 mMediaBuffers.editItemAt(bufferIx) = NULL; 225 } 226 mInputBufferIsDequeued.editItemAt(bufferIx) = true; 227 228 sp<AMessage> reply = new AMessage(kWhatInputBufferFilled, id()); 229 reply->setSize("buffer-ix", bufferIx); 230 reply->setInt32("generation", mBufferGeneration); 231 232 sp<AMessage> notify = mNotify->dup(); 233 notify->setInt32("what", kWhatFillThisBuffer); 234 notify->setBuffer("buffer", mInputBuffers[bufferIx]); 235 notify->setMessage("reply", reply); 236 notify->post(); 237 return true; 238} 239 240void android::NuPlayer::Decoder::onInputBufferFilled(const sp<AMessage> &msg) { 241 size_t bufferIx; 242 CHECK(msg->findSize("buffer-ix", &bufferIx)); 243 CHECK_LT(bufferIx, mInputBuffers.size()); 244 sp<ABuffer> codecBuffer = mInputBuffers[bufferIx]; 245 246 sp<ABuffer> buffer; 247 bool hasBuffer = msg->findBuffer("buffer", &buffer); 248 249 // handle widevine classic source - that fills an arbitrary input buffer 250 MediaBuffer *mediaBuffer = NULL; 251 if (hasBuffer && buffer->meta()->findPointer( 252 "mediaBuffer", (void **)&mediaBuffer)) { 253 if (mediaBuffer == NULL) { 254 // received no actual buffer 255 ALOGW("[%s] received null MediaBuffer %s", 256 mComponentName.c_str(), msg->debugString().c_str()); 257 buffer = NULL; 258 } else { 259 // likely filled another buffer than we requested: adjust buffer index 260 size_t ix; 261 for (ix = 0; ix < mInputBuffers.size(); ix++) { 262 const sp<ABuffer> &buf = mInputBuffers[ix]; 263 if (buf->data() == mediaBuffer->data()) { 264 // all input buffers are dequeued on start, hence the check 265 CHECK(mInputBufferIsDequeued[ix]); 266 ALOGV("[%s] received MediaBuffer for #%zu instead of #%zu", 267 mComponentName.c_str(), ix, bufferIx); 268 269 // TRICKY: need buffer for the metadata, so instead, set 270 // codecBuffer to the same (though incorrect) buffer to 271 // avoid a memcpy into the codecBuffer 272 codecBuffer = buffer; 273 codecBuffer->setRange( 274 mediaBuffer->range_offset(), 275 mediaBuffer->range_length()); 276 bufferIx = ix; 277 break; 278 } 279 } 280 CHECK(ix < mInputBuffers.size()); 281 } 282 } 283 284 mInputBufferIsDequeued.editItemAt(bufferIx) = false; 285 286 if (buffer == NULL /* includes !hasBuffer */) { 287 int32_t streamErr = ERROR_END_OF_STREAM; 288 CHECK(msg->findInt32("err", &streamErr) || !hasBuffer); 289 290 if (streamErr == OK) { 291 /* buffers are returned to hold on to */ 292 return; 293 } 294 295 // attempt to queue EOS 296 status_t err = mCodec->queueInputBuffer( 297 bufferIx, 298 0, 299 0, 300 0, 301 MediaCodec::BUFFER_FLAG_EOS); 302 if (streamErr == ERROR_END_OF_STREAM && err != OK) { 303 streamErr = err; 304 // err will not be ERROR_END_OF_STREAM 305 } 306 307 if (streamErr != ERROR_END_OF_STREAM) { 308 handleError(streamErr); 309 } 310 } else { 311 int64_t timeUs = 0; 312 uint32_t flags = 0; 313 CHECK(buffer->meta()->findInt64("timeUs", &timeUs)); 314 315 int32_t eos; 316 // we do not expect CODECCONFIG or SYNCFRAME for decoder 317 if (buffer->meta()->findInt32("eos", &eos) && eos) { 318 flags |= MediaCodec::BUFFER_FLAG_EOS; 319 } 320 321 // copy into codec buffer 322 if (buffer != codecBuffer) { 323 CHECK_LE(buffer->size(), codecBuffer->capacity()); 324 codecBuffer->setRange(0, buffer->size()); 325 memcpy(codecBuffer->data(), buffer->data(), buffer->size()); 326 } 327 328 status_t err = mCodec->queueInputBuffer( 329 bufferIx, 330 codecBuffer->offset(), 331 codecBuffer->size(), 332 timeUs, 333 flags); 334 if (err != OK) { 335 ALOGE("Failed to queue input buffer for %s (err=%d)", 336 mComponentName.c_str(), err); 337 handleError(err); 338 } 339 340 if (mediaBuffer != NULL) { 341 CHECK(mMediaBuffers[bufferIx] == NULL); 342 mMediaBuffers.editItemAt(bufferIx) = mediaBuffer; 343 } 344 } 345} 346 347bool NuPlayer::Decoder::handleAnOutputBuffer() { 348 size_t bufferIx = -1; 349 size_t offset; 350 size_t size; 351 int64_t timeUs; 352 uint32_t flags; 353 status_t res = mCodec->dequeueOutputBuffer( 354 &bufferIx, &offset, &size, &timeUs, &flags); 355 356 if (res != OK) { 357 ALOGV("[%s] dequeued output: %d", mComponentName.c_str(), res); 358 } else { 359 ALOGV("[%s] dequeued output: %d (time=%lld flags=%" PRIu32 ")", 360 mComponentName.c_str(), (int)bufferIx, timeUs, flags); 361 } 362 363 if (res == INFO_OUTPUT_BUFFERS_CHANGED) { 364 res = mCodec->getOutputBuffers(&mOutputBuffers); 365 if (res != OK) { 366 ALOGE("Failed to get output buffers for %s after INFO event (err=%d)", 367 mComponentName.c_str(), res); 368 handleError(res); 369 return false; 370 } 371 // NuPlayer ignores this 372 return true; 373 } else if (res == INFO_FORMAT_CHANGED) { 374 sp<AMessage> format = new AMessage(); 375 res = mCodec->getOutputFormat(&format); 376 if (res != OK) { 377 ALOGE("Failed to get output format for %s after INFO event (err=%d)", 378 mComponentName.c_str(), res); 379 handleError(res); 380 return false; 381 } 382 383 sp<AMessage> notify = mNotify->dup(); 384 notify->setInt32("what", kWhatOutputFormatChanged); 385 notify->setMessage("format", format); 386 notify->post(); 387 return true; 388 } else if (res == INFO_DISCONTINUITY) { 389 // nothing to do 390 return true; 391 } else if (res != OK) { 392 if (res != -EAGAIN) { 393 handleError(res); 394 } 395 return false; 396 } 397 398 CHECK_LT(bufferIx, mOutputBuffers.size()); 399 sp<ABuffer> buffer = mOutputBuffers[bufferIx]; 400 buffer->setRange(offset, size); 401 buffer->meta()->clear(); 402 buffer->meta()->setInt64("timeUs", timeUs); 403 if (flags & MediaCodec::BUFFER_FLAG_EOS) { 404 buffer->meta()->setInt32("eos", true); 405 } 406 // we do not expect CODECCONFIG or SYNCFRAME for decoder 407 408 sp<AMessage> reply = new AMessage(kWhatRenderBuffer, id()); 409 reply->setSize("buffer-ix", bufferIx); 410 reply->setInt32("generation", mBufferGeneration); 411 412 sp<AMessage> notify = mNotify->dup(); 413 notify->setInt32("what", kWhatDrainThisBuffer); 414 notify->setBuffer("buffer", buffer); 415 notify->setMessage("reply", reply); 416 notify->post(); 417 418 // FIXME: This should be handled after rendering is complete, 419 // but Renderer needs it now 420 if (flags & MediaCodec::BUFFER_FLAG_EOS) { 421 ALOGV("queueing eos [%s]", mComponentName.c_str()); 422 sp<AMessage> notify = mNotify->dup(); 423 notify->setInt32("what", kWhatEOS); 424 notify->setInt32("err", ERROR_END_OF_STREAM); 425 notify->post(); 426 } 427 return true; 428} 429 430void NuPlayer::Decoder::onRenderBuffer(const sp<AMessage> &msg) { 431 status_t err; 432 int32_t render; 433 size_t bufferIx; 434 CHECK(msg->findSize("buffer-ix", &bufferIx)); 435 if (msg->findInt32("render", &render) && render) { 436 err = mCodec->renderOutputBufferAndRelease(bufferIx); 437 } else { 438 err = mCodec->releaseOutputBuffer(bufferIx); 439 } 440 if (err != OK) { 441 ALOGE("failed to release output buffer for %s (err=%d)", 442 mComponentName.c_str(), err); 443 handleError(err); 444 } 445} 446 447void NuPlayer::Decoder::onFlush() { 448 status_t err = OK; 449 if (mCodec != NULL) { 450 err = mCodec->flush(); 451 ++mBufferGeneration; 452 } 453 454 if (err != OK) { 455 ALOGE("failed to flush %s (err=%d)", mComponentName.c_str(), err); 456 handleError(err); 457 return; 458 } 459 460 releaseAndResetMediaBuffers(); 461 462 sp<AMessage> notify = mNotify->dup(); 463 notify->setInt32("what", kWhatFlushCompleted); 464 notify->post(); 465 mPaused = true; 466} 467 468void NuPlayer::Decoder::onResume() { 469 mPaused = false; 470} 471 472void NuPlayer::Decoder::onShutdown() { 473 status_t err = OK; 474 if (mCodec != NULL) { 475 err = mCodec->release(); 476 mCodec = NULL; 477 ++mBufferGeneration; 478 479 if (mNativeWindow != NULL) { 480 // reconnect to surface as MediaCodec disconnected from it 481 CHECK_EQ((int)NO_ERROR, 482 native_window_api_connect( 483 mNativeWindow->getNativeWindow().get(), 484 NATIVE_WINDOW_API_MEDIA)); 485 } 486 mComponentName = "decoder"; 487 } 488 489 releaseAndResetMediaBuffers(); 490 491 if (err != OK) { 492 ALOGE("failed to release %s (err=%d)", mComponentName.c_str(), err); 493 handleError(err); 494 return; 495 } 496 497 sp<AMessage> notify = mNotify->dup(); 498 notify->setInt32("what", kWhatShutdownCompleted); 499 notify->post(); 500 mPaused = true; 501} 502 503void NuPlayer::Decoder::onMessageReceived(const sp<AMessage> &msg) { 504 ALOGV("[%s] onMessage: %s", mComponentName.c_str(), msg->debugString().c_str()); 505 506 switch (msg->what()) { 507 case kWhatConfigure: 508 { 509 sp<AMessage> format; 510 CHECK(msg->findMessage("format", &format)); 511 onConfigure(format); 512 break; 513 } 514 515 case kWhatGetInputBuffers: 516 { 517 uint32_t replyID; 518 CHECK(msg->senderAwaitsResponse(&replyID)); 519 520 Vector<sp<ABuffer> > *dstBuffers; 521 CHECK(msg->findPointer("buffers", (void **)&dstBuffers)); 522 523 dstBuffers->clear(); 524 for (size_t i = 0; i < mInputBuffers.size(); i++) { 525 dstBuffers->push(mInputBuffers[i]); 526 } 527 528 (new AMessage)->postReply(replyID); 529 break; 530 } 531 532 case kWhatCodecNotify: 533 { 534 if (!isStaleReply(msg)) { 535 if (!mPaused) { 536 while (handleAnInputBuffer()) { 537 } 538 } 539 540 while (handleAnOutputBuffer()) { 541 } 542 } 543 544 requestCodecNotification(); 545 break; 546 } 547 548 case kWhatInputBufferFilled: 549 { 550 if (!isStaleReply(msg)) { 551 onInputBufferFilled(msg); 552 } 553 break; 554 } 555 556 case kWhatRenderBuffer: 557 { 558 if (!isStaleReply(msg)) { 559 onRenderBuffer(msg); 560 } 561 break; 562 } 563 564 case kWhatFlush: 565 { 566 onFlush(); 567 break; 568 } 569 570 case kWhatResume: 571 { 572 onResume(); 573 break; 574 } 575 576 case kWhatShutdown: 577 { 578 onShutdown(); 579 break; 580 } 581 582 default: 583 TRESPASS(); 584 break; 585 } 586} 587 588void NuPlayer::Decoder::signalFlush() { 589 (new AMessage(kWhatFlush, id()))->post(); 590} 591 592void NuPlayer::Decoder::signalResume() { 593 (new AMessage(kWhatResume, id()))->post(); 594} 595 596void NuPlayer::Decoder::initiateShutdown() { 597 (new AMessage(kWhatShutdown, id()))->post(); 598} 599 600bool NuPlayer::Decoder::supportsSeamlessAudioFormatChange(const sp<AMessage> &targetFormat) const { 601 if (targetFormat == NULL) { 602 return true; 603 } 604 605 AString mime; 606 if (!targetFormat->findString("mime", &mime)) { 607 return false; 608 } 609 610 if (!strcasecmp(mime.c_str(), MEDIA_MIMETYPE_AUDIO_AAC)) { 611 // field-by-field comparison 612 const char * keys[] = { "channel-count", "sample-rate", "is-adts" }; 613 for (unsigned int i = 0; i < sizeof(keys) / sizeof(keys[0]); i++) { 614 int32_t oldVal, newVal; 615 if (!mOutputFormat->findInt32(keys[i], &oldVal) || 616 !targetFormat->findInt32(keys[i], &newVal) || 617 oldVal != newVal) { 618 return false; 619 } 620 } 621 622 sp<ABuffer> oldBuf, newBuf; 623 if (mOutputFormat->findBuffer("csd-0", &oldBuf) && 624 targetFormat->findBuffer("csd-0", &newBuf)) { 625 if (oldBuf->size() != newBuf->size()) { 626 return false; 627 } 628 return !memcmp(oldBuf->data(), newBuf->data(), oldBuf->size()); 629 } 630 } 631 return false; 632} 633 634bool NuPlayer::Decoder::supportsSeamlessFormatChange(const sp<AMessage> &targetFormat) const { 635 if (mOutputFormat == NULL) { 636 return false; 637 } 638 639 if (targetFormat == NULL) { 640 return true; 641 } 642 643 AString oldMime, newMime; 644 if (!mOutputFormat->findString("mime", &oldMime) 645 || !targetFormat->findString("mime", &newMime) 646 || !(oldMime == newMime)) { 647 return false; 648 } 649 650 bool audio = !strncasecmp(oldMime.c_str(), "audio/", strlen("audio/")); 651 bool seamless; 652 if (audio) { 653 seamless = supportsSeamlessAudioFormatChange(targetFormat); 654 } else { 655 int32_t isAdaptive; 656 seamless = (mCodec != NULL && 657 mInputFormat->findInt32("adaptive-playback", &isAdaptive) && 658 isAdaptive); 659 } 660 661 ALOGV("%s seamless support for %s", seamless ? "yes" : "no", oldMime.c_str()); 662 return seamless; 663} 664 665struct NuPlayer::CCDecoder::CCData { 666 CCData(uint8_t type, uint8_t data1, uint8_t data2) 667 : mType(type), mData1(data1), mData2(data2) { 668 } 669 670 uint8_t mType; 671 uint8_t mData1; 672 uint8_t mData2; 673}; 674 675NuPlayer::CCDecoder::CCDecoder(const sp<AMessage> ¬ify) 676 : mNotify(notify), 677 mTrackCount(0), 678 mSelectedTrack(-1) { 679} 680 681size_t NuPlayer::CCDecoder::getTrackCount() const { 682 return mTrackCount; 683} 684 685sp<AMessage> NuPlayer::CCDecoder::getTrackInfo(size_t index) const { 686 CHECK(index == 0); 687 688 sp<AMessage> format = new AMessage(); 689 690 format->setInt32("type", MEDIA_TRACK_TYPE_SUBTITLE); 691 format->setString("language", "und"); 692 format->setString("mime", MEDIA_MIMETYPE_TEXT_CEA_608); 693 format->setInt32("auto", 1); 694 format->setInt32("default", 1); 695 format->setInt32("forced", 0); 696 697 return format; 698} 699 700status_t NuPlayer::CCDecoder::selectTrack(size_t index, bool select) { 701 CHECK(index < mTrackCount); 702 703 if (select) { 704 if (mSelectedTrack == (ssize_t)index) { 705 ALOGE("track %zu already selected", index); 706 return BAD_VALUE; 707 } 708 ALOGV("selected track %zu", index); 709 mSelectedTrack = index; 710 } else { 711 if (mSelectedTrack != (ssize_t)index) { 712 ALOGE("track %zu is not selected", index); 713 return BAD_VALUE; 714 } 715 ALOGV("unselected track %zu", index); 716 mSelectedTrack = -1; 717 } 718 719 return OK; 720} 721 722bool NuPlayer::CCDecoder::isSelected() const { 723 return mSelectedTrack >= 0 && mSelectedTrack < (int32_t)mTrackCount; 724} 725 726bool NuPlayer::CCDecoder::isNullPad(CCData *cc) const { 727 return cc->mData1 < 0x10 && cc->mData2 < 0x10; 728} 729 730void NuPlayer::CCDecoder::dumpBytePair(const sp<ABuffer> &ccBuf) const { 731 size_t offset = 0; 732 AString out; 733 734 while (offset < ccBuf->size()) { 735 char tmp[128]; 736 737 CCData *cc = (CCData *) (ccBuf->data() + offset); 738 739 if (isNullPad(cc)) { 740 // 1 null pad or XDS metadata, ignore 741 offset += sizeof(CCData); 742 continue; 743 } 744 745 if (cc->mData1 >= 0x20 && cc->mData1 <= 0x7f) { 746 // 2 basic chars 747 sprintf(tmp, "[%d]Basic: %c %c", cc->mType, cc->mData1, cc->mData2); 748 } else if ((cc->mData1 == 0x11 || cc->mData1 == 0x19) 749 && cc->mData2 >= 0x30 && cc->mData2 <= 0x3f) { 750 // 1 special char 751 sprintf(tmp, "[%d]Special: %02x %02x", cc->mType, cc->mData1, cc->mData2); 752 } else if ((cc->mData1 == 0x12 || cc->mData1 == 0x1A) 753 && cc->mData2 >= 0x20 && cc->mData2 <= 0x3f){ 754 // 1 Spanish/French char 755 sprintf(tmp, "[%d]Spanish: %02x %02x", cc->mType, cc->mData1, cc->mData2); 756 } else if ((cc->mData1 == 0x13 || cc->mData1 == 0x1B) 757 && cc->mData2 >= 0x20 && cc->mData2 <= 0x3f){ 758 // 1 Portuguese/German/Danish char 759 sprintf(tmp, "[%d]German: %02x %02x", cc->mType, cc->mData1, cc->mData2); 760 } else if ((cc->mData1 == 0x11 || cc->mData1 == 0x19) 761 && cc->mData2 >= 0x20 && cc->mData2 <= 0x2f){ 762 // Mid-Row Codes (Table 69) 763 sprintf(tmp, "[%d]Mid-row: %02x %02x", cc->mType, cc->mData1, cc->mData2); 764 } else if (((cc->mData1 == 0x14 || cc->mData1 == 0x1c) 765 && cc->mData2 >= 0x20 && cc->mData2 <= 0x2f) 766 || 767 ((cc->mData1 == 0x17 || cc->mData1 == 0x1f) 768 && cc->mData2 >= 0x21 && cc->mData2 <= 0x23)){ 769 // Misc Control Codes (Table 70) 770 sprintf(tmp, "[%d]Ctrl: %02x %02x", cc->mType, cc->mData1, cc->mData2); 771 } else if ((cc->mData1 & 0x70) == 0x10 772 && (cc->mData2 & 0x40) == 0x40 773 && ((cc->mData1 & 0x07) || !(cc->mData2 & 0x20)) ) { 774 // Preamble Address Codes (Table 71) 775 sprintf(tmp, "[%d]PAC: %02x %02x", cc->mType, cc->mData1, cc->mData2); 776 } else { 777 sprintf(tmp, "[%d]Invalid: %02x %02x", cc->mType, cc->mData1, cc->mData2); 778 } 779 780 if (out.size() > 0) { 781 out.append(", "); 782 } 783 784 out.append(tmp); 785 786 offset += sizeof(CCData); 787 } 788 789 ALOGI("%s", out.c_str()); 790} 791 792bool NuPlayer::CCDecoder::extractFromSEI(const sp<ABuffer> &accessUnit) { 793 int64_t timeUs; 794 CHECK(accessUnit->meta()->findInt64("timeUs", &timeUs)); 795 796 sp<ABuffer> sei; 797 if (!accessUnit->meta()->findBuffer("sei", &sei) || sei == NULL) { 798 return false; 799 } 800 801 bool hasCC = false; 802 803 NALBitReader br(sei->data() + 1, sei->size() - 1); 804 // sei_message() 805 while (br.atLeastNumBitsLeft(16)) { // at least 16-bit for sei_message() 806 uint32_t payload_type = 0; 807 size_t payload_size = 0; 808 uint8_t last_byte; 809 810 do { 811 last_byte = br.getBits(8); 812 payload_type += last_byte; 813 } while (last_byte == 0xFF); 814 815 do { 816 last_byte = br.getBits(8); 817 payload_size += last_byte; 818 } while (last_byte == 0xFF); 819 820 // sei_payload() 821 if (payload_type == 4) { 822 // user_data_registered_itu_t_t35() 823 824 // ATSC A/72: 6.4.2 825 uint8_t itu_t_t35_country_code = br.getBits(8); 826 uint16_t itu_t_t35_provider_code = br.getBits(16); 827 uint32_t user_identifier = br.getBits(32); 828 uint8_t user_data_type_code = br.getBits(8); 829 830 payload_size -= 1 + 2 + 4 + 1; 831 832 if (itu_t_t35_country_code == 0xB5 833 && itu_t_t35_provider_code == 0x0031 834 && user_identifier == 'GA94' 835 && user_data_type_code == 0x3) { 836 hasCC = true; 837 838 // MPEG_cc_data() 839 // ATSC A/53 Part 4: 6.2.3.1 840 br.skipBits(1); //process_em_data_flag 841 bool process_cc_data_flag = br.getBits(1); 842 br.skipBits(1); //additional_data_flag 843 size_t cc_count = br.getBits(5); 844 br.skipBits(8); // em_data; 845 payload_size -= 2; 846 847 if (process_cc_data_flag) { 848 AString out; 849 850 sp<ABuffer> ccBuf = new ABuffer(cc_count * sizeof(CCData)); 851 ccBuf->setRange(0, 0); 852 853 for (size_t i = 0; i < cc_count; i++) { 854 uint8_t marker = br.getBits(5); 855 CHECK_EQ(marker, 0x1f); 856 857 bool cc_valid = br.getBits(1); 858 uint8_t cc_type = br.getBits(2); 859 // remove odd parity bit 860 uint8_t cc_data_1 = br.getBits(8) & 0x7f; 861 uint8_t cc_data_2 = br.getBits(8) & 0x7f; 862 863 if (cc_valid 864 && (cc_type == 0 || cc_type == 1)) { 865 CCData cc(cc_type, cc_data_1, cc_data_2); 866 if (!isNullPad(&cc)) { 867 memcpy(ccBuf->data() + ccBuf->size(), 868 (void *)&cc, sizeof(cc)); 869 ccBuf->setRange(0, ccBuf->size() + sizeof(CCData)); 870 } 871 } 872 } 873 payload_size -= cc_count * 3; 874 875 mCCMap.add(timeUs, ccBuf); 876 break; 877 } 878 } else { 879 ALOGV("Malformed SEI payload type 4"); 880 } 881 } else { 882 ALOGV("Unsupported SEI payload type %d", payload_type); 883 } 884 885 // skipping remaining bits of this payload 886 br.skipBits(payload_size * 8); 887 } 888 889 return hasCC; 890} 891 892void NuPlayer::CCDecoder::decode(const sp<ABuffer> &accessUnit) { 893 if (extractFromSEI(accessUnit) && mTrackCount == 0) { 894 mTrackCount++; 895 896 ALOGI("Found CEA-608 track"); 897 sp<AMessage> msg = mNotify->dup(); 898 msg->setInt32("what", kWhatTrackAdded); 899 msg->post(); 900 } 901 // TODO: extract CC from other sources 902} 903 904void NuPlayer::CCDecoder::display(int64_t timeUs) { 905 ssize_t index = mCCMap.indexOfKey(timeUs); 906 if (index < 0) { 907 ALOGV("cc for timestamp %" PRId64 " not found", timeUs); 908 return; 909 } 910 911 sp<ABuffer> &ccBuf = mCCMap.editValueAt(index); 912 913 if (ccBuf->size() > 0) { 914#if 0 915 dumpBytePair(ccBuf); 916#endif 917 918 ccBuf->meta()->setInt32("trackIndex", mSelectedTrack); 919 ccBuf->meta()->setInt64("timeUs", timeUs); 920 ccBuf->meta()->setInt64("durationUs", 0ll); 921 922 sp<AMessage> msg = mNotify->dup(); 923 msg->setInt32("what", kWhatClosedCaptionData); 924 msg->setBuffer("buffer", ccBuf); 925 msg->post(); 926 } 927 928 // remove all entries before timeUs 929 mCCMap.removeItemsAt(0, index + 1); 930} 931 932} // namespace android 933 934