NuPlayerDecoder.cpp revision a2e086d0de970feb3a0e727a84feac97145beac9
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("NPDecoder"); 48 mDecoderLooper->start(false, false, ANDROID_PRIORITY_AUDIO); 49 50 mCodecLooper = new ALooper; 51 mCodecLooper->setName("NPDecoder-CL"); 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::rememberCodecSpecificData(const sp<AMessage> &format) { 75 mCSDsForCurrentFormat.clear(); 76 for (int32_t i = 0; ; ++i) { 77 AString tag = "csd-"; 78 tag.append(i); 79 sp<ABuffer> buffer; 80 if (!format->findBuffer(tag.c_str(), &buffer)) { 81 break; 82 } 83 mCSDsForCurrentFormat.push(buffer); 84 } 85} 86 87void NuPlayer::Decoder::onConfigure(const sp<AMessage> &format) { 88 CHECK(mCodec == NULL); 89 90 ++mBufferGeneration; 91 92 AString mime; 93 CHECK(format->findString("mime", &mime)); 94 95 sp<Surface> surface = NULL; 96 if (mNativeWindow != NULL) { 97 surface = mNativeWindow->getSurfaceTextureClient(); 98 } 99 100 mComponentName = mime; 101 mComponentName.append(" decoder"); 102 ALOGV("[%s] onConfigure (surface=%p)", mComponentName.c_str(), surface.get()); 103 104 mCodec = MediaCodec::CreateByType(mCodecLooper, mime.c_str(), false /* encoder */); 105 int32_t secure = 0; 106 if (format->findInt32("secure", &secure) && secure != 0) { 107 if (mCodec != NULL) { 108 mCodec->getName(&mComponentName); 109 mComponentName.append(".secure"); 110 mCodec->release(); 111 ALOGI("[%s] creating", mComponentName.c_str()); 112 mCodec = MediaCodec::CreateByComponentName( 113 mCodecLooper, mComponentName.c_str()); 114 } 115 } 116 if (mCodec == NULL) { 117 ALOGE("Failed to create %s%s decoder", 118 (secure ? "secure " : ""), mime.c_str()); 119 handleError(UNKNOWN_ERROR); 120 return; 121 } 122 123 mCodec->getName(&mComponentName); 124 125 status_t err; 126 if (mNativeWindow != NULL) { 127 // disconnect from surface as MediaCodec will reconnect 128 err = native_window_api_disconnect( 129 surface.get(), NATIVE_WINDOW_API_MEDIA); 130 // We treat this as a warning, as this is a preparatory step. 131 // Codec will try to connect to the surface, which is where 132 // any error signaling will occur. 133 ALOGW_IF(err != OK, "failed to disconnect from surface: %d", err); 134 } 135 err = mCodec->configure( 136 format, surface, NULL /* crypto */, 0 /* flags */); 137 if (err != OK) { 138 ALOGE("Failed to configure %s decoder (err=%d)", mComponentName.c_str(), err); 139 handleError(err); 140 return; 141 } 142 rememberCodecSpecificData(format); 143 144 // the following should work in configured state 145 CHECK_EQ((status_t)OK, mCodec->getOutputFormat(&mOutputFormat)); 146 CHECK_EQ((status_t)OK, mCodec->getInputFormat(&mInputFormat)); 147 148 err = mCodec->start(); 149 if (err != OK) { 150 ALOGE("Failed to start %s decoder (err=%d)", mComponentName.c_str(), err); 151 handleError(err); 152 return; 153 } 154 155 // the following should work after start 156 CHECK_EQ((status_t)OK, mCodec->getInputBuffers(&mInputBuffers)); 157 releaseAndResetMediaBuffers(); 158 CHECK_EQ((status_t)OK, mCodec->getOutputBuffers(&mOutputBuffers)); 159 ALOGV("[%s] got %zu input and %zu output buffers", 160 mComponentName.c_str(), 161 mInputBuffers.size(), 162 mOutputBuffers.size()); 163 164 requestCodecNotification(); 165 mPaused = false; 166} 167 168void NuPlayer::Decoder::releaseAndResetMediaBuffers() { 169 for (size_t i = 0; i < mMediaBuffers.size(); i++) { 170 if (mMediaBuffers[i] != NULL) { 171 mMediaBuffers[i]->release(); 172 mMediaBuffers.editItemAt(i) = NULL; 173 } 174 } 175 mMediaBuffers.resize(mInputBuffers.size()); 176 for (size_t i = 0; i < mMediaBuffers.size(); i++) { 177 mMediaBuffers.editItemAt(i) = NULL; 178 } 179 mInputBufferIsDequeued.clear(); 180 mInputBufferIsDequeued.resize(mInputBuffers.size()); 181 for (size_t i = 0; i < mInputBufferIsDequeued.size(); i++) { 182 mInputBufferIsDequeued.editItemAt(i) = false; 183 } 184} 185 186void NuPlayer::Decoder::requestCodecNotification() { 187 if (mCodec != NULL) { 188 sp<AMessage> reply = new AMessage(kWhatCodecNotify, id()); 189 reply->setInt32("generation", mBufferGeneration); 190 mCodec->requestActivityNotification(reply); 191 } 192} 193 194bool NuPlayer::Decoder::isStaleReply(const sp<AMessage> &msg) { 195 int32_t generation; 196 CHECK(msg->findInt32("generation", &generation)); 197 return generation != mBufferGeneration; 198} 199 200void NuPlayer::Decoder::init() { 201 mDecoderLooper->registerHandler(this); 202} 203 204void NuPlayer::Decoder::configure(const sp<AMessage> &format) { 205 sp<AMessage> msg = new AMessage(kWhatConfigure, id()); 206 msg->setMessage("format", format); 207 msg->post(); 208} 209 210void NuPlayer::Decoder::signalUpdateFormat(const sp<AMessage> &format) { 211 sp<AMessage> msg = new AMessage(kWhatUpdateFormat, id()); 212 msg->setMessage("format", format); 213 msg->post(); 214} 215 216status_t NuPlayer::Decoder::getInputBuffers(Vector<sp<ABuffer> > *buffers) const { 217 sp<AMessage> msg = new AMessage(kWhatGetInputBuffers, id()); 218 msg->setPointer("buffers", buffers); 219 220 sp<AMessage> response; 221 return PostAndAwaitResponse(msg, &response); 222} 223 224void NuPlayer::Decoder::handleError(int32_t err) 225{ 226 mCodec->release(); 227 228 sp<AMessage> notify = mNotify->dup(); 229 notify->setInt32("what", kWhatError); 230 notify->setInt32("err", err); 231 notify->post(); 232} 233 234bool NuPlayer::Decoder::handleAnInputBuffer() { 235 size_t bufferIx = -1; 236 status_t res = mCodec->dequeueInputBuffer(&bufferIx); 237 ALOGV("[%s] dequeued input: %d", 238 mComponentName.c_str(), res == OK ? (int)bufferIx : res); 239 if (res != OK) { 240 if (res != -EAGAIN) { 241 handleError(res); 242 } 243 return false; 244 } 245 246 CHECK_LT(bufferIx, mInputBuffers.size()); 247 248 if (mMediaBuffers[bufferIx] != NULL) { 249 mMediaBuffers[bufferIx]->release(); 250 mMediaBuffers.editItemAt(bufferIx) = NULL; 251 } 252 mInputBufferIsDequeued.editItemAt(bufferIx) = true; 253 254 sp<AMessage> reply = new AMessage(kWhatInputBufferFilled, id()); 255 reply->setSize("buffer-ix", bufferIx); 256 reply->setInt32("generation", mBufferGeneration); 257 258 if (!mCSDsToSubmit.isEmpty()) { 259 sp<ABuffer> buffer = mCSDsToSubmit.itemAt(0); 260 ALOGI("[%s] resubmitting CSD", mComponentName.c_str()); 261 reply->setBuffer("buffer", buffer); 262 mCSDsToSubmit.removeAt(0); 263 reply->post(); 264 return true; 265 } 266 267 sp<AMessage> notify = mNotify->dup(); 268 notify->setInt32("what", kWhatFillThisBuffer); 269 notify->setBuffer("buffer", mInputBuffers[bufferIx]); 270 notify->setMessage("reply", reply); 271 notify->post(); 272 return true; 273} 274 275void android::NuPlayer::Decoder::onInputBufferFilled(const sp<AMessage> &msg) { 276 size_t bufferIx; 277 CHECK(msg->findSize("buffer-ix", &bufferIx)); 278 CHECK_LT(bufferIx, mInputBuffers.size()); 279 sp<ABuffer> codecBuffer = mInputBuffers[bufferIx]; 280 281 sp<ABuffer> buffer; 282 bool hasBuffer = msg->findBuffer("buffer", &buffer); 283 284 // handle widevine classic source - that fills an arbitrary input buffer 285 MediaBuffer *mediaBuffer = NULL; 286 if (hasBuffer) { 287 mediaBuffer = (MediaBuffer *)(buffer->getMediaBufferBase()); 288 if (mediaBuffer != NULL) { 289 // likely filled another buffer than we requested: adjust buffer index 290 size_t ix; 291 for (ix = 0; ix < mInputBuffers.size(); ix++) { 292 const sp<ABuffer> &buf = mInputBuffers[ix]; 293 if (buf->data() == mediaBuffer->data()) { 294 // all input buffers are dequeued on start, hence the check 295 CHECK(mInputBufferIsDequeued[ix]); 296 ALOGV("[%s] received MediaBuffer for #%zu instead of #%zu", 297 mComponentName.c_str(), ix, bufferIx); 298 299 // TRICKY: need buffer for the metadata, so instead, set 300 // codecBuffer to the same (though incorrect) buffer to 301 // avoid a memcpy into the codecBuffer 302 codecBuffer = buffer; 303 codecBuffer->setRange( 304 mediaBuffer->range_offset(), 305 mediaBuffer->range_length()); 306 bufferIx = ix; 307 break; 308 } 309 } 310 CHECK(ix < mInputBuffers.size()); 311 } 312 } 313 314 mInputBufferIsDequeued.editItemAt(bufferIx) = false; 315 316 if (buffer == NULL /* includes !hasBuffer */) { 317 int32_t streamErr = ERROR_END_OF_STREAM; 318 CHECK(msg->findInt32("err", &streamErr) || !hasBuffer); 319 320 if (streamErr == OK) { 321 /* buffers are returned to hold on to */ 322 return; 323 } 324 325 // attempt to queue EOS 326 status_t err = mCodec->queueInputBuffer( 327 bufferIx, 328 0, 329 0, 330 0, 331 MediaCodec::BUFFER_FLAG_EOS); 332 if (streamErr == ERROR_END_OF_STREAM && err != OK) { 333 streamErr = err; 334 // err will not be ERROR_END_OF_STREAM 335 } 336 337 if (streamErr != ERROR_END_OF_STREAM) { 338 handleError(streamErr); 339 } 340 } else { 341 int64_t timeUs = 0; 342 uint32_t flags = 0; 343 CHECK(buffer->meta()->findInt64("timeUs", &timeUs)); 344 345 int32_t eos, csd; 346 // we do not expect SYNCFRAME for decoder 347 if (buffer->meta()->findInt32("eos", &eos) && eos) { 348 flags |= MediaCodec::BUFFER_FLAG_EOS; 349 } else if (buffer->meta()->findInt32("csd", &csd) && csd) { 350 flags |= MediaCodec::BUFFER_FLAG_CODECCONFIG; 351 } 352 353 // copy into codec buffer 354 if (buffer != codecBuffer) { 355 CHECK_LE(buffer->size(), codecBuffer->capacity()); 356 codecBuffer->setRange(0, buffer->size()); 357 memcpy(codecBuffer->data(), buffer->data(), buffer->size()); 358 } 359 360 status_t err = mCodec->queueInputBuffer( 361 bufferIx, 362 codecBuffer->offset(), 363 codecBuffer->size(), 364 timeUs, 365 flags); 366 if (err != OK) { 367 ALOGE("Failed to queue input buffer for %s (err=%d)", 368 mComponentName.c_str(), err); 369 handleError(err); 370 } 371 372 if (mediaBuffer != NULL) { 373 CHECK(mMediaBuffers[bufferIx] == NULL); 374 mMediaBuffers.editItemAt(bufferIx) = mediaBuffer; 375 } 376 } 377} 378 379bool NuPlayer::Decoder::handleAnOutputBuffer() { 380 size_t bufferIx = -1; 381 size_t offset; 382 size_t size; 383 int64_t timeUs; 384 uint32_t flags; 385 status_t res = mCodec->dequeueOutputBuffer( 386 &bufferIx, &offset, &size, &timeUs, &flags); 387 388 if (res != OK) { 389 ALOGV("[%s] dequeued output: %d", mComponentName.c_str(), res); 390 } else { 391 ALOGV("[%s] dequeued output: %d (time=%lld flags=%" PRIu32 ")", 392 mComponentName.c_str(), (int)bufferIx, timeUs, flags); 393 } 394 395 if (res == INFO_OUTPUT_BUFFERS_CHANGED) { 396 res = mCodec->getOutputBuffers(&mOutputBuffers); 397 if (res != OK) { 398 ALOGE("Failed to get output buffers for %s after INFO event (err=%d)", 399 mComponentName.c_str(), res); 400 handleError(res); 401 return false; 402 } 403 // NuPlayer ignores this 404 return true; 405 } else if (res == INFO_FORMAT_CHANGED) { 406 sp<AMessage> format = new AMessage(); 407 res = mCodec->getOutputFormat(&format); 408 if (res != OK) { 409 ALOGE("Failed to get output format for %s after INFO event (err=%d)", 410 mComponentName.c_str(), res); 411 handleError(res); 412 return false; 413 } 414 415 sp<AMessage> notify = mNotify->dup(); 416 notify->setInt32("what", kWhatOutputFormatChanged); 417 notify->setMessage("format", format); 418 notify->post(); 419 return true; 420 } else if (res == INFO_DISCONTINUITY) { 421 // nothing to do 422 return true; 423 } else if (res != OK) { 424 if (res != -EAGAIN) { 425 handleError(res); 426 } 427 return false; 428 } 429 430 CHECK_LT(bufferIx, mOutputBuffers.size()); 431 sp<ABuffer> buffer = mOutputBuffers[bufferIx]; 432 buffer->setRange(offset, size); 433 buffer->meta()->clear(); 434 buffer->meta()->setInt64("timeUs", timeUs); 435 if (flags & MediaCodec::BUFFER_FLAG_EOS) { 436 buffer->meta()->setInt32("eos", true); 437 } 438 // we do not expect CODECCONFIG or SYNCFRAME for decoder 439 440 sp<AMessage> reply = new AMessage(kWhatRenderBuffer, id()); 441 reply->setSize("buffer-ix", bufferIx); 442 reply->setInt32("generation", mBufferGeneration); 443 444 sp<AMessage> notify = mNotify->dup(); 445 notify->setInt32("what", kWhatDrainThisBuffer); 446 notify->setBuffer("buffer", buffer); 447 notify->setMessage("reply", reply); 448 notify->post(); 449 450 // FIXME: This should be handled after rendering is complete, 451 // but Renderer needs it now 452 if (flags & MediaCodec::BUFFER_FLAG_EOS) { 453 ALOGV("queueing eos [%s]", mComponentName.c_str()); 454 sp<AMessage> notify = mNotify->dup(); 455 notify->setInt32("what", kWhatEOS); 456 notify->setInt32("err", ERROR_END_OF_STREAM); 457 notify->post(); 458 } 459 return true; 460} 461 462void NuPlayer::Decoder::onRenderBuffer(const sp<AMessage> &msg) { 463 status_t err; 464 int32_t render; 465 size_t bufferIx; 466 CHECK(msg->findSize("buffer-ix", &bufferIx)); 467 if (msg->findInt32("render", &render) && render) { 468 int64_t timestampNs; 469 CHECK(msg->findInt64("timestampNs", ×tampNs)); 470 err = mCodec->renderOutputBufferAndRelease(bufferIx, timestampNs); 471 } else { 472 err = mCodec->releaseOutputBuffer(bufferIx); 473 } 474 if (err != OK) { 475 ALOGE("failed to release output buffer for %s (err=%d)", 476 mComponentName.c_str(), err); 477 handleError(err); 478 } 479} 480 481void NuPlayer::Decoder::onFlush() { 482 status_t err = OK; 483 if (mCodec != NULL) { 484 err = mCodec->flush(); 485 mCSDsToSubmit = mCSDsForCurrentFormat; // copy operator 486 ++mBufferGeneration; 487 } 488 489 if (err != OK) { 490 ALOGE("failed to flush %s (err=%d)", mComponentName.c_str(), err); 491 handleError(err); 492 return; 493 } 494 495 releaseAndResetMediaBuffers(); 496 497 sp<AMessage> notify = mNotify->dup(); 498 notify->setInt32("what", kWhatFlushCompleted); 499 notify->post(); 500 mPaused = true; 501} 502 503void NuPlayer::Decoder::onResume() { 504 mPaused = false; 505} 506 507void NuPlayer::Decoder::onShutdown() { 508 status_t err = OK; 509 if (mCodec != NULL) { 510 err = mCodec->release(); 511 mCodec = NULL; 512 ++mBufferGeneration; 513 514 if (mNativeWindow != NULL) { 515 // reconnect to surface as MediaCodec disconnected from it 516 status_t error = 517 native_window_api_connect( 518 mNativeWindow->getNativeWindow().get(), 519 NATIVE_WINDOW_API_MEDIA); 520 ALOGW_IF(error != NO_ERROR, 521 "[%s] failed to connect to native window, error=%d", 522 mComponentName.c_str(), error); 523 } 524 mComponentName = "decoder"; 525 } 526 527 releaseAndResetMediaBuffers(); 528 529 if (err != OK) { 530 ALOGE("failed to release %s (err=%d)", mComponentName.c_str(), err); 531 handleError(err); 532 return; 533 } 534 535 sp<AMessage> notify = mNotify->dup(); 536 notify->setInt32("what", kWhatShutdownCompleted); 537 notify->post(); 538 mPaused = true; 539} 540 541void NuPlayer::Decoder::onMessageReceived(const sp<AMessage> &msg) { 542 ALOGV("[%s] onMessage: %s", mComponentName.c_str(), msg->debugString().c_str()); 543 544 switch (msg->what()) { 545 case kWhatConfigure: 546 { 547 sp<AMessage> format; 548 CHECK(msg->findMessage("format", &format)); 549 onConfigure(format); 550 break; 551 } 552 553 case kWhatUpdateFormat: 554 { 555 sp<AMessage> format; 556 CHECK(msg->findMessage("format", &format)); 557 rememberCodecSpecificData(format); 558 break; 559 } 560 561 case kWhatGetInputBuffers: 562 { 563 uint32_t replyID; 564 CHECK(msg->senderAwaitsResponse(&replyID)); 565 566 Vector<sp<ABuffer> > *dstBuffers; 567 CHECK(msg->findPointer("buffers", (void **)&dstBuffers)); 568 569 dstBuffers->clear(); 570 for (size_t i = 0; i < mInputBuffers.size(); i++) { 571 dstBuffers->push(mInputBuffers[i]); 572 } 573 574 (new AMessage)->postReply(replyID); 575 break; 576 } 577 578 case kWhatCodecNotify: 579 { 580 if (!isStaleReply(msg)) { 581 if (!mPaused) { 582 while (handleAnInputBuffer()) { 583 } 584 } 585 586 while (handleAnOutputBuffer()) { 587 } 588 } 589 590 requestCodecNotification(); 591 break; 592 } 593 594 case kWhatInputBufferFilled: 595 { 596 if (!isStaleReply(msg)) { 597 onInputBufferFilled(msg); 598 } 599 600 break; 601 } 602 603 case kWhatRenderBuffer: 604 { 605 if (!isStaleReply(msg)) { 606 onRenderBuffer(msg); 607 } 608 break; 609 } 610 611 case kWhatFlush: 612 { 613 sp<AMessage> format; 614 if (msg->findMessage("new-format", &format)) { 615 rememberCodecSpecificData(format); 616 } 617 onFlush(); 618 break; 619 } 620 621 case kWhatResume: 622 { 623 onResume(); 624 break; 625 } 626 627 case kWhatShutdown: 628 { 629 onShutdown(); 630 break; 631 } 632 633 default: 634 TRESPASS(); 635 break; 636 } 637} 638 639void NuPlayer::Decoder::signalFlush(const sp<AMessage> &format) { 640 sp<AMessage> msg = new AMessage(kWhatFlush, id()); 641 if (format != NULL) { 642 msg->setMessage("new-format", format); 643 } 644 msg->post(); 645} 646 647void NuPlayer::Decoder::signalResume() { 648 (new AMessage(kWhatResume, id()))->post(); 649} 650 651void NuPlayer::Decoder::initiateShutdown() { 652 (new AMessage(kWhatShutdown, id()))->post(); 653} 654 655bool NuPlayer::Decoder::supportsSeamlessAudioFormatChange(const sp<AMessage> &targetFormat) const { 656 if (targetFormat == NULL) { 657 return true; 658 } 659 660 AString mime; 661 if (!targetFormat->findString("mime", &mime)) { 662 return false; 663 } 664 665 if (!strcasecmp(mime.c_str(), MEDIA_MIMETYPE_AUDIO_AAC)) { 666 // field-by-field comparison 667 const char * keys[] = { "channel-count", "sample-rate", "is-adts" }; 668 for (unsigned int i = 0; i < sizeof(keys) / sizeof(keys[0]); i++) { 669 int32_t oldVal, newVal; 670 if (!mOutputFormat->findInt32(keys[i], &oldVal) || 671 !targetFormat->findInt32(keys[i], &newVal) || 672 oldVal != newVal) { 673 return false; 674 } 675 } 676 677 sp<ABuffer> oldBuf, newBuf; 678 if (mOutputFormat->findBuffer("csd-0", &oldBuf) && 679 targetFormat->findBuffer("csd-0", &newBuf)) { 680 if (oldBuf->size() != newBuf->size()) { 681 return false; 682 } 683 return !memcmp(oldBuf->data(), newBuf->data(), oldBuf->size()); 684 } 685 } 686 return false; 687} 688 689bool NuPlayer::Decoder::supportsSeamlessFormatChange(const sp<AMessage> &targetFormat) const { 690 if (mOutputFormat == NULL) { 691 return false; 692 } 693 694 if (targetFormat == NULL) { 695 return true; 696 } 697 698 AString oldMime, newMime; 699 if (!mOutputFormat->findString("mime", &oldMime) 700 || !targetFormat->findString("mime", &newMime) 701 || !(oldMime == newMime)) { 702 return false; 703 } 704 705 bool audio = !strncasecmp(oldMime.c_str(), "audio/", strlen("audio/")); 706 bool seamless; 707 if (audio) { 708 seamless = supportsSeamlessAudioFormatChange(targetFormat); 709 } else { 710 int32_t isAdaptive; 711 seamless = (mCodec != NULL && 712 mInputFormat->findInt32("adaptive-playback", &isAdaptive) && 713 isAdaptive); 714 } 715 716 ALOGV("%s seamless support for %s", seamless ? "yes" : "no", oldMime.c_str()); 717 return seamless; 718} 719 720struct CCData { 721 CCData(uint8_t type, uint8_t data1, uint8_t data2) 722 : mType(type), mData1(data1), mData2(data2) { 723 } 724 bool getChannel(size_t *channel) const { 725 if (mData1 >= 0x10 && mData1 <= 0x1f) { 726 *channel = (mData1 >= 0x18 ? 1 : 0) + (mType ? 2 : 0); 727 return true; 728 } 729 return false; 730 } 731 732 uint8_t mType; 733 uint8_t mData1; 734 uint8_t mData2; 735}; 736 737static bool isNullPad(CCData *cc) { 738 return cc->mData1 < 0x10 && cc->mData2 < 0x10; 739} 740 741static void dumpBytePair(const sp<ABuffer> &ccBuf) { 742 size_t offset = 0; 743 AString out; 744 745 while (offset < ccBuf->size()) { 746 char tmp[128]; 747 748 CCData *cc = (CCData *) (ccBuf->data() + offset); 749 750 if (isNullPad(cc)) { 751 // 1 null pad or XDS metadata, ignore 752 offset += sizeof(CCData); 753 continue; 754 } 755 756 if (cc->mData1 >= 0x20 && cc->mData1 <= 0x7f) { 757 // 2 basic chars 758 sprintf(tmp, "[%d]Basic: %c %c", cc->mType, cc->mData1, cc->mData2); 759 } else if ((cc->mData1 == 0x11 || cc->mData1 == 0x19) 760 && cc->mData2 >= 0x30 && cc->mData2 <= 0x3f) { 761 // 1 special char 762 sprintf(tmp, "[%d]Special: %02x %02x", cc->mType, cc->mData1, cc->mData2); 763 } else if ((cc->mData1 == 0x12 || cc->mData1 == 0x1A) 764 && cc->mData2 >= 0x20 && cc->mData2 <= 0x3f){ 765 // 1 Spanish/French char 766 sprintf(tmp, "[%d]Spanish: %02x %02x", cc->mType, cc->mData1, cc->mData2); 767 } else if ((cc->mData1 == 0x13 || cc->mData1 == 0x1B) 768 && cc->mData2 >= 0x20 && cc->mData2 <= 0x3f){ 769 // 1 Portuguese/German/Danish char 770 sprintf(tmp, "[%d]German: %02x %02x", cc->mType, cc->mData1, cc->mData2); 771 } else if ((cc->mData1 == 0x11 || cc->mData1 == 0x19) 772 && cc->mData2 >= 0x20 && cc->mData2 <= 0x2f){ 773 // Mid-Row Codes (Table 69) 774 sprintf(tmp, "[%d]Mid-row: %02x %02x", cc->mType, cc->mData1, cc->mData2); 775 } else if (((cc->mData1 == 0x14 || cc->mData1 == 0x1c) 776 && cc->mData2 >= 0x20 && cc->mData2 <= 0x2f) 777 || 778 ((cc->mData1 == 0x17 || cc->mData1 == 0x1f) 779 && cc->mData2 >= 0x21 && cc->mData2 <= 0x23)){ 780 // Misc Control Codes (Table 70) 781 sprintf(tmp, "[%d]Ctrl: %02x %02x", cc->mType, cc->mData1, cc->mData2); 782 } else if ((cc->mData1 & 0x70) == 0x10 783 && (cc->mData2 & 0x40) == 0x40 784 && ((cc->mData1 & 0x07) || !(cc->mData2 & 0x20)) ) { 785 // Preamble Address Codes (Table 71) 786 sprintf(tmp, "[%d]PAC: %02x %02x", cc->mType, cc->mData1, cc->mData2); 787 } else { 788 sprintf(tmp, "[%d]Invalid: %02x %02x", cc->mType, cc->mData1, cc->mData2); 789 } 790 791 if (out.size() > 0) { 792 out.append(", "); 793 } 794 795 out.append(tmp); 796 797 offset += sizeof(CCData); 798 } 799 800 ALOGI("%s", out.c_str()); 801} 802 803NuPlayer::CCDecoder::CCDecoder(const sp<AMessage> ¬ify) 804 : mNotify(notify), 805 mCurrentChannel(0), 806 mSelectedTrack(-1) { 807 for (size_t i = 0; i < sizeof(mTrackIndices)/sizeof(mTrackIndices[0]); ++i) { 808 mTrackIndices[i] = -1; 809 } 810} 811 812size_t NuPlayer::CCDecoder::getTrackCount() const { 813 return mFoundChannels.size(); 814} 815 816sp<AMessage> NuPlayer::CCDecoder::getTrackInfo(size_t index) const { 817 if (!isTrackValid(index)) { 818 return NULL; 819 } 820 821 sp<AMessage> format = new AMessage(); 822 823 format->setInt32("type", MEDIA_TRACK_TYPE_SUBTITLE); 824 format->setString("language", "und"); 825 format->setString("mime", MEDIA_MIMETYPE_TEXT_CEA_608); 826 //CC1, field 0 channel 0 827 bool isDefaultAuto = (mFoundChannels[index] == 0); 828 format->setInt32("auto", isDefaultAuto); 829 format->setInt32("default", isDefaultAuto); 830 format->setInt32("forced", 0); 831 832 return format; 833} 834 835status_t NuPlayer::CCDecoder::selectTrack(size_t index, bool select) { 836 if (!isTrackValid(index)) { 837 return BAD_VALUE; 838 } 839 840 if (select) { 841 if (mSelectedTrack == (ssize_t)index) { 842 ALOGE("track %zu already selected", index); 843 return BAD_VALUE; 844 } 845 ALOGV("selected track %zu", index); 846 mSelectedTrack = index; 847 } else { 848 if (mSelectedTrack != (ssize_t)index) { 849 ALOGE("track %zu is not selected", index); 850 return BAD_VALUE; 851 } 852 ALOGV("unselected track %zu", index); 853 mSelectedTrack = -1; 854 } 855 856 return OK; 857} 858 859bool NuPlayer::CCDecoder::isSelected() const { 860 return mSelectedTrack >= 0 && mSelectedTrack < (int32_t) getTrackCount(); 861} 862 863bool NuPlayer::CCDecoder::isTrackValid(size_t index) const { 864 return index < getTrackCount(); 865} 866 867int32_t NuPlayer::CCDecoder::getTrackIndex(size_t channel) const { 868 if (channel < sizeof(mTrackIndices)/sizeof(mTrackIndices[0])) { 869 return mTrackIndices[channel]; 870 } 871 return -1; 872} 873 874// returns true if a new CC track is found 875bool NuPlayer::CCDecoder::extractFromSEI(const sp<ABuffer> &accessUnit) { 876 int64_t timeUs; 877 CHECK(accessUnit->meta()->findInt64("timeUs", &timeUs)); 878 879 sp<ABuffer> sei; 880 if (!accessUnit->meta()->findBuffer("sei", &sei) || sei == NULL) { 881 return false; 882 } 883 884 bool trackAdded = false; 885 886 NALBitReader br(sei->data() + 1, sei->size() - 1); 887 // sei_message() 888 while (br.atLeastNumBitsLeft(16)) { // at least 16-bit for sei_message() 889 uint32_t payload_type = 0; 890 size_t payload_size = 0; 891 uint8_t last_byte; 892 893 do { 894 last_byte = br.getBits(8); 895 payload_type += last_byte; 896 } while (last_byte == 0xFF); 897 898 do { 899 last_byte = br.getBits(8); 900 payload_size += last_byte; 901 } while (last_byte == 0xFF); 902 903 // sei_payload() 904 if (payload_type == 4) { 905 // user_data_registered_itu_t_t35() 906 907 // ATSC A/72: 6.4.2 908 uint8_t itu_t_t35_country_code = br.getBits(8); 909 uint16_t itu_t_t35_provider_code = br.getBits(16); 910 uint32_t user_identifier = br.getBits(32); 911 uint8_t user_data_type_code = br.getBits(8); 912 913 payload_size -= 1 + 2 + 4 + 1; 914 915 if (itu_t_t35_country_code == 0xB5 916 && itu_t_t35_provider_code == 0x0031 917 && user_identifier == 'GA94' 918 && user_data_type_code == 0x3) { 919 // MPEG_cc_data() 920 // ATSC A/53 Part 4: 6.2.3.1 921 br.skipBits(1); //process_em_data_flag 922 bool process_cc_data_flag = br.getBits(1); 923 br.skipBits(1); //additional_data_flag 924 size_t cc_count = br.getBits(5); 925 br.skipBits(8); // em_data; 926 payload_size -= 2; 927 928 if (process_cc_data_flag) { 929 AString out; 930 931 sp<ABuffer> ccBuf = new ABuffer(cc_count * sizeof(CCData)); 932 ccBuf->setRange(0, 0); 933 934 for (size_t i = 0; i < cc_count; i++) { 935 uint8_t marker = br.getBits(5); 936 CHECK_EQ(marker, 0x1f); 937 938 bool cc_valid = br.getBits(1); 939 uint8_t cc_type = br.getBits(2); 940 // remove odd parity bit 941 uint8_t cc_data_1 = br.getBits(8) & 0x7f; 942 uint8_t cc_data_2 = br.getBits(8) & 0x7f; 943 944 if (cc_valid 945 && (cc_type == 0 || cc_type == 1)) { 946 CCData cc(cc_type, cc_data_1, cc_data_2); 947 if (!isNullPad(&cc)) { 948 size_t channel; 949 if (cc.getChannel(&channel) && getTrackIndex(channel) < 0) { 950 mTrackIndices[channel] = mFoundChannels.size(); 951 mFoundChannels.push_back(channel); 952 trackAdded = true; 953 } 954 memcpy(ccBuf->data() + ccBuf->size(), 955 (void *)&cc, sizeof(cc)); 956 ccBuf->setRange(0, ccBuf->size() + sizeof(CCData)); 957 } 958 } 959 } 960 payload_size -= cc_count * 3; 961 962 mCCMap.add(timeUs, ccBuf); 963 break; 964 } 965 } else { 966 ALOGV("Malformed SEI payload type 4"); 967 } 968 } else { 969 ALOGV("Unsupported SEI payload type %d", payload_type); 970 } 971 972 // skipping remaining bits of this payload 973 br.skipBits(payload_size * 8); 974 } 975 976 return trackAdded; 977} 978 979sp<ABuffer> NuPlayer::CCDecoder::filterCCBuf( 980 const sp<ABuffer> &ccBuf, size_t index) { 981 sp<ABuffer> filteredCCBuf = new ABuffer(ccBuf->size()); 982 filteredCCBuf->setRange(0, 0); 983 984 size_t cc_count = ccBuf->size() / sizeof(CCData); 985 const CCData* cc_data = (const CCData*)ccBuf->data(); 986 for (size_t i = 0; i < cc_count; ++i) { 987 size_t channel; 988 if (cc_data[i].getChannel(&channel)) { 989 mCurrentChannel = channel; 990 } 991 if (mCurrentChannel == mFoundChannels[index]) { 992 memcpy(filteredCCBuf->data() + filteredCCBuf->size(), 993 (void *)&cc_data[i], sizeof(CCData)); 994 filteredCCBuf->setRange(0, filteredCCBuf->size() + sizeof(CCData)); 995 } 996 } 997 998 return filteredCCBuf; 999} 1000 1001void NuPlayer::CCDecoder::decode(const sp<ABuffer> &accessUnit) { 1002 if (extractFromSEI(accessUnit)) { 1003 ALOGI("Found CEA-608 track"); 1004 sp<AMessage> msg = mNotify->dup(); 1005 msg->setInt32("what", kWhatTrackAdded); 1006 msg->post(); 1007 } 1008 // TODO: extract CC from other sources 1009} 1010 1011void NuPlayer::CCDecoder::display(int64_t timeUs) { 1012 if (!isTrackValid(mSelectedTrack)) { 1013 ALOGE("Could not find current track(index=%d)", mSelectedTrack); 1014 return; 1015 } 1016 1017 ssize_t index = mCCMap.indexOfKey(timeUs); 1018 if (index < 0) { 1019 ALOGV("cc for timestamp %" PRId64 " not found", timeUs); 1020 return; 1021 } 1022 1023 sp<ABuffer> ccBuf = filterCCBuf(mCCMap.valueAt(index), mSelectedTrack); 1024 1025 if (ccBuf->size() > 0) { 1026#if 0 1027 dumpBytePair(ccBuf); 1028#endif 1029 1030 ccBuf->meta()->setInt32("trackIndex", mSelectedTrack); 1031 ccBuf->meta()->setInt64("timeUs", timeUs); 1032 ccBuf->meta()->setInt64("durationUs", 0ll); 1033 1034 sp<AMessage> msg = mNotify->dup(); 1035 msg->setInt32("what", kWhatClosedCaptionData); 1036 msg->setBuffer("buffer", ccBuf); 1037 msg->post(); 1038 } 1039 1040 // remove all entries before timeUs 1041 mCCMap.removeItemsAt(0, index + 1); 1042} 1043 1044void NuPlayer::CCDecoder::flush() { 1045 mCCMap.clear(); 1046} 1047 1048} // namespace android 1049 1050