SoundPool.cpp revision 34fb29696b0f3abf61b10f8d053b1f33d501de0a
1/* 2 * Copyright (C) 2007 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 "SoundPool" 19 20#include <inttypes.h> 21 22#include <utils/Log.h> 23 24#define USE_SHARED_MEM_BUFFER 25 26#include <media/AudioTrack.h> 27#include <media/IMediaHTTPService.h> 28#include <media/mediaplayer.h> 29#include <media/SoundPool.h> 30#include "SoundPoolThread.h" 31 32namespace android 33{ 34 35int kDefaultBufferCount = 4; 36uint32_t kMaxSampleRate = 48000; 37uint32_t kDefaultSampleRate = 44100; 38uint32_t kDefaultFrameCount = 1200; 39size_t kDefaultHeapSize = 1024 * 1024; // 1MB 40 41 42SoundPool::SoundPool(int maxChannels, audio_stream_type_t streamType, int srcQuality) 43{ 44 ALOGV("SoundPool constructor: maxChannels=%d, streamType=%d, srcQuality=%d", 45 maxChannels, streamType, srcQuality); 46 47 // check limits 48 mMaxChannels = maxChannels; 49 if (mMaxChannels < 1) { 50 mMaxChannels = 1; 51 } 52 else if (mMaxChannels > 32) { 53 mMaxChannels = 32; 54 } 55 ALOGW_IF(maxChannels != mMaxChannels, "App requested %d channels", maxChannels); 56 57 mQuit = false; 58 mDecodeThread = 0; 59 mStreamType = streamType; 60 mSrcQuality = srcQuality; 61 mAllocated = 0; 62 mNextSampleID = 0; 63 mNextChannelID = 0; 64 65 mCallback = 0; 66 mUserData = 0; 67 68 mChannelPool = new SoundChannel[mMaxChannels]; 69 for (int i = 0; i < mMaxChannels; ++i) { 70 mChannelPool[i].init(this); 71 mChannels.push_back(&mChannelPool[i]); 72 } 73 74 // start decode thread 75 startThreads(); 76} 77 78SoundPool::~SoundPool() 79{ 80 ALOGV("SoundPool destructor"); 81 mDecodeThread->quit(); 82 quit(); 83 84 Mutex::Autolock lock(&mLock); 85 86 mChannels.clear(); 87 if (mChannelPool) 88 delete [] mChannelPool; 89 // clean up samples 90 ALOGV("clear samples"); 91 mSamples.clear(); 92 93 if (mDecodeThread) 94 delete mDecodeThread; 95} 96 97void SoundPool::addToRestartList(SoundChannel* channel) 98{ 99 Mutex::Autolock lock(&mRestartLock); 100 if (!mQuit) { 101 mRestart.push_back(channel); 102 mCondition.signal(); 103 } 104} 105 106void SoundPool::addToStopList(SoundChannel* channel) 107{ 108 Mutex::Autolock lock(&mRestartLock); 109 if (!mQuit) { 110 mStop.push_back(channel); 111 mCondition.signal(); 112 } 113} 114 115int SoundPool::beginThread(void* arg) 116{ 117 SoundPool* p = (SoundPool*)arg; 118 return p->run(); 119} 120 121int SoundPool::run() 122{ 123 mRestartLock.lock(); 124 while (!mQuit) { 125 mCondition.wait(mRestartLock); 126 ALOGV("awake"); 127 if (mQuit) break; 128 129 while (!mStop.empty()) { 130 SoundChannel* channel; 131 ALOGV("Getting channel from stop list"); 132 List<SoundChannel* >::iterator iter = mStop.begin(); 133 channel = *iter; 134 mStop.erase(iter); 135 mRestartLock.unlock(); 136 if (channel != 0) { 137 Mutex::Autolock lock(&mLock); 138 channel->stop(); 139 } 140 mRestartLock.lock(); 141 if (mQuit) break; 142 } 143 144 while (!mRestart.empty()) { 145 SoundChannel* channel; 146 ALOGV("Getting channel from list"); 147 List<SoundChannel*>::iterator iter = mRestart.begin(); 148 channel = *iter; 149 mRestart.erase(iter); 150 mRestartLock.unlock(); 151 if (channel != 0) { 152 Mutex::Autolock lock(&mLock); 153 channel->nextEvent(); 154 } 155 mRestartLock.lock(); 156 if (mQuit) break; 157 } 158 } 159 160 mStop.clear(); 161 mRestart.clear(); 162 mCondition.signal(); 163 mRestartLock.unlock(); 164 ALOGV("goodbye"); 165 return 0; 166} 167 168void SoundPool::quit() 169{ 170 mRestartLock.lock(); 171 mQuit = true; 172 mCondition.signal(); 173 mCondition.wait(mRestartLock); 174 ALOGV("return from quit"); 175 mRestartLock.unlock(); 176} 177 178bool SoundPool::startThreads() 179{ 180 createThreadEtc(beginThread, this, "SoundPool"); 181 if (mDecodeThread == NULL) 182 mDecodeThread = new SoundPoolThread(this); 183 return mDecodeThread != NULL; 184} 185 186SoundChannel* SoundPool::findChannel(int channelID) 187{ 188 for (int i = 0; i < mMaxChannels; ++i) { 189 if (mChannelPool[i].channelID() == channelID) { 190 return &mChannelPool[i]; 191 } 192 } 193 return NULL; 194} 195 196SoundChannel* SoundPool::findNextChannel(int channelID) 197{ 198 for (int i = 0; i < mMaxChannels; ++i) { 199 if (mChannelPool[i].nextChannelID() == channelID) { 200 return &mChannelPool[i]; 201 } 202 } 203 return NULL; 204} 205 206int SoundPool::load(const char* path, int priority __unused) 207{ 208 ALOGV("load: path=%s, priority=%d", path, priority); 209 Mutex::Autolock lock(&mLock); 210 sp<Sample> sample = new Sample(++mNextSampleID, path); 211 mSamples.add(sample->sampleID(), sample); 212 doLoad(sample); 213 return sample->sampleID(); 214} 215 216int SoundPool::load(int fd, int64_t offset, int64_t length, int priority __unused) 217{ 218 ALOGV("load: fd=%d, offset=%" PRId64 ", length=%" PRId64 ", priority=%d", 219 fd, offset, length, priority); 220 Mutex::Autolock lock(&mLock); 221 sp<Sample> sample = new Sample(++mNextSampleID, fd, offset, length); 222 mSamples.add(sample->sampleID(), sample); 223 doLoad(sample); 224 return sample->sampleID(); 225} 226 227void SoundPool::doLoad(sp<Sample>& sample) 228{ 229 ALOGV("doLoad: loading sample sampleID=%d", sample->sampleID()); 230 sample->startLoad(); 231 mDecodeThread->loadSample(sample->sampleID()); 232} 233 234bool SoundPool::unload(int sampleID) 235{ 236 ALOGV("unload: sampleID=%d", sampleID); 237 Mutex::Autolock lock(&mLock); 238 return mSamples.removeItem(sampleID); 239} 240 241int SoundPool::play(int sampleID, float leftVolume, float rightVolume, 242 int priority, int loop, float rate) 243{ 244 ALOGV("play sampleID=%d, leftVolume=%f, rightVolume=%f, priority=%d, loop=%d, rate=%f", 245 sampleID, leftVolume, rightVolume, priority, loop, rate); 246 sp<Sample> sample; 247 SoundChannel* channel; 248 int channelID; 249 250 Mutex::Autolock lock(&mLock); 251 252 if (mQuit) { 253 return 0; 254 } 255 // is sample ready? 256 sample = findSample(sampleID); 257 if ((sample == 0) || (sample->state() != Sample::READY)) { 258 ALOGW(" sample %d not READY", sampleID); 259 return 0; 260 } 261 262 dump(); 263 264 // allocate a channel 265 channel = allocateChannel_l(priority); 266 267 // no channel allocated - return 0 268 if (!channel) { 269 ALOGV("No channel allocated"); 270 return 0; 271 } 272 273 channelID = ++mNextChannelID; 274 275 ALOGV("play channel %p state = %d", channel, channel->state()); 276 channel->play(sample, channelID, leftVolume, rightVolume, priority, loop, rate); 277 return channelID; 278} 279 280SoundChannel* SoundPool::allocateChannel_l(int priority) 281{ 282 List<SoundChannel*>::iterator iter; 283 SoundChannel* channel = NULL; 284 285 // allocate a channel 286 if (!mChannels.empty()) { 287 iter = mChannels.begin(); 288 if (priority >= (*iter)->priority()) { 289 channel = *iter; 290 mChannels.erase(iter); 291 ALOGV("Allocated active channel"); 292 } 293 } 294 295 // update priority and put it back in the list 296 if (channel) { 297 channel->setPriority(priority); 298 for (iter = mChannels.begin(); iter != mChannels.end(); ++iter) { 299 if (priority < (*iter)->priority()) { 300 break; 301 } 302 } 303 mChannels.insert(iter, channel); 304 } 305 return channel; 306} 307 308// move a channel from its current position to the front of the list 309void SoundPool::moveToFront_l(SoundChannel* channel) 310{ 311 for (List<SoundChannel*>::iterator iter = mChannels.begin(); iter != mChannels.end(); ++iter) { 312 if (*iter == channel) { 313 mChannels.erase(iter); 314 mChannels.push_front(channel); 315 break; 316 } 317 } 318} 319 320void SoundPool::pause(int channelID) 321{ 322 ALOGV("pause(%d)", channelID); 323 Mutex::Autolock lock(&mLock); 324 SoundChannel* channel = findChannel(channelID); 325 if (channel) { 326 channel->pause(); 327 } 328} 329 330void SoundPool::autoPause() 331{ 332 ALOGV("autoPause()"); 333 Mutex::Autolock lock(&mLock); 334 for (int i = 0; i < mMaxChannels; ++i) { 335 SoundChannel* channel = &mChannelPool[i]; 336 channel->autoPause(); 337 } 338} 339 340void SoundPool::resume(int channelID) 341{ 342 ALOGV("resume(%d)", channelID); 343 Mutex::Autolock lock(&mLock); 344 SoundChannel* channel = findChannel(channelID); 345 if (channel) { 346 channel->resume(); 347 } 348} 349 350void SoundPool::autoResume() 351{ 352 ALOGV("autoResume()"); 353 Mutex::Autolock lock(&mLock); 354 for (int i = 0; i < mMaxChannels; ++i) { 355 SoundChannel* channel = &mChannelPool[i]; 356 channel->autoResume(); 357 } 358} 359 360void SoundPool::stop(int channelID) 361{ 362 ALOGV("stop(%d)", channelID); 363 Mutex::Autolock lock(&mLock); 364 SoundChannel* channel = findChannel(channelID); 365 if (channel) { 366 channel->stop(); 367 } else { 368 channel = findNextChannel(channelID); 369 if (channel) 370 channel->clearNextEvent(); 371 } 372} 373 374void SoundPool::setVolume(int channelID, float leftVolume, float rightVolume) 375{ 376 Mutex::Autolock lock(&mLock); 377 SoundChannel* channel = findChannel(channelID); 378 if (channel) { 379 channel->setVolume(leftVolume, rightVolume); 380 } 381} 382 383void SoundPool::setPriority(int channelID, int priority) 384{ 385 ALOGV("setPriority(%d, %d)", channelID, priority); 386 Mutex::Autolock lock(&mLock); 387 SoundChannel* channel = findChannel(channelID); 388 if (channel) { 389 channel->setPriority(priority); 390 } 391} 392 393void SoundPool::setLoop(int channelID, int loop) 394{ 395 ALOGV("setLoop(%d, %d)", channelID, loop); 396 Mutex::Autolock lock(&mLock); 397 SoundChannel* channel = findChannel(channelID); 398 if (channel) { 399 channel->setLoop(loop); 400 } 401} 402 403void SoundPool::setRate(int channelID, float rate) 404{ 405 ALOGV("setRate(%d, %f)", channelID, rate); 406 Mutex::Autolock lock(&mLock); 407 SoundChannel* channel = findChannel(channelID); 408 if (channel) { 409 channel->setRate(rate); 410 } 411} 412 413// call with lock held 414void SoundPool::done_l(SoundChannel* channel) 415{ 416 ALOGV("done_l(%d)", channel->channelID()); 417 // if "stolen", play next event 418 if (channel->nextChannelID() != 0) { 419 ALOGV("add to restart list"); 420 addToRestartList(channel); 421 } 422 423 // return to idle state 424 else { 425 ALOGV("move to front"); 426 moveToFront_l(channel); 427 } 428} 429 430void SoundPool::setCallback(SoundPoolCallback* callback, void* user) 431{ 432 Mutex::Autolock lock(&mCallbackLock); 433 mCallback = callback; 434 mUserData = user; 435} 436 437void SoundPool::notify(SoundPoolEvent event) 438{ 439 Mutex::Autolock lock(&mCallbackLock); 440 if (mCallback != NULL) { 441 mCallback(event, this, mUserData); 442 } 443} 444 445void SoundPool::dump() 446{ 447 for (int i = 0; i < mMaxChannels; ++i) { 448 mChannelPool[i].dump(); 449 } 450} 451 452 453Sample::Sample(int sampleID, const char* url) 454{ 455 init(); 456 mSampleID = sampleID; 457 mUrl = strdup(url); 458 ALOGV("create sampleID=%d, url=%s", mSampleID, mUrl); 459} 460 461Sample::Sample(int sampleID, int fd, int64_t offset, int64_t length) 462{ 463 init(); 464 mSampleID = sampleID; 465 mFd = dup(fd); 466 mOffset = offset; 467 mLength = length; 468 ALOGV("create sampleID=%d, fd=%d, offset=%" PRId64 " length=%" PRId64, 469 mSampleID, mFd, mLength, mOffset); 470} 471 472void Sample::init() 473{ 474 mSize = 0; 475 mRefCount = 0; 476 mSampleID = 0; 477 mState = UNLOADED; 478 mFd = -1; 479 mOffset = 0; 480 mLength = 0; 481 mUrl = 0; 482} 483 484Sample::~Sample() 485{ 486 ALOGV("Sample::destructor sampleID=%d, fd=%d", mSampleID, mFd); 487 if (mFd > 0) { 488 ALOGV("close(%d)", mFd); 489 ::close(mFd); 490 } 491 free(mUrl); 492} 493 494status_t Sample::doLoad() 495{ 496 uint32_t sampleRate; 497 int numChannels; 498 audio_format_t format; 499 status_t status; 500 mHeap = new MemoryHeapBase(kDefaultHeapSize); 501 502 ALOGV("Start decode"); 503 if (mUrl) { 504 status = MediaPlayer::decode( 505 NULL /* httpService */, 506 mUrl, 507 &sampleRate, 508 &numChannels, 509 &format, 510 mHeap, 511 &mSize); 512 } else { 513 status = MediaPlayer::decode(mFd, mOffset, mLength, &sampleRate, &numChannels, &format, 514 mHeap, &mSize); 515 ALOGV("close(%d)", mFd); 516 ::close(mFd); 517 mFd = -1; 518 } 519 if (status != NO_ERROR) { 520 ALOGE("Unable to load sample: %s", mUrl); 521 goto error; 522 } 523 ALOGV("pointer = %p, size = %zu, sampleRate = %u, numChannels = %d", 524 mHeap->getBase(), mSize, sampleRate, numChannels); 525 526 if (sampleRate > kMaxSampleRate) { 527 ALOGE("Sample rate (%u) out of range", sampleRate); 528 status = BAD_VALUE; 529 goto error; 530 } 531 532 if ((numChannels < 1) || (numChannels > 2)) { 533 ALOGE("Sample channel count (%d) out of range", numChannels); 534 status = BAD_VALUE; 535 goto error; 536 } 537 538 mData = new MemoryBase(mHeap, 0, mSize); 539 mSampleRate = sampleRate; 540 mNumChannels = numChannels; 541 mFormat = format; 542 mState = READY; 543 return NO_ERROR; 544 545error: 546 mHeap.clear(); 547 return status; 548} 549 550 551void SoundChannel::init(SoundPool* soundPool) 552{ 553 mSoundPool = soundPool; 554} 555 556// call with sound pool lock held 557void SoundChannel::play(const sp<Sample>& sample, int nextChannelID, float leftVolume, 558 float rightVolume, int priority, int loop, float rate) 559{ 560 sp<AudioTrack> oldTrack; 561 sp<AudioTrack> newTrack; 562 status_t status; 563 564 { // scope for the lock 565 Mutex::Autolock lock(&mLock); 566 567 ALOGV("SoundChannel::play %p: sampleID=%d, channelID=%d, leftVolume=%f, rightVolume=%f," 568 " priority=%d, loop=%d, rate=%f", 569 this, sample->sampleID(), nextChannelID, leftVolume, rightVolume, 570 priority, loop, rate); 571 572 // if not idle, this voice is being stolen 573 if (mState != IDLE) { 574 ALOGV("channel %d stolen - event queued for channel %d", channelID(), nextChannelID); 575 mNextEvent.set(sample, nextChannelID, leftVolume, rightVolume, priority, loop, rate); 576 stop_l(); 577 return; 578 } 579 580 // initialize track 581 size_t afFrameCount; 582 uint32_t afSampleRate; 583 audio_stream_type_t streamType = mSoundPool->streamType(); 584 if (AudioSystem::getOutputFrameCount(&afFrameCount, streamType) != NO_ERROR) { 585 afFrameCount = kDefaultFrameCount; 586 } 587 if (AudioSystem::getOutputSamplingRate(&afSampleRate, streamType) != NO_ERROR) { 588 afSampleRate = kDefaultSampleRate; 589 } 590 int numChannels = sample->numChannels(); 591 uint32_t sampleRate = uint32_t(float(sample->sampleRate()) * rate + 0.5); 592 uint32_t totalFrames = (kDefaultBufferCount * afFrameCount * sampleRate) / afSampleRate; 593 uint32_t bufferFrames = (totalFrames + (kDefaultBufferCount - 1)) / kDefaultBufferCount; 594 size_t frameCount = 0; 595 596 if (loop) { 597 frameCount = sample->size()/numChannels/ 598 ((sample->format() == AUDIO_FORMAT_PCM_16_BIT) ? sizeof(int16_t) : sizeof(uint8_t)); 599 } 600 601#ifndef USE_SHARED_MEM_BUFFER 602 // Ensure minimum audio buffer size in case of short looped sample 603 if(frameCount < totalFrames) { 604 frameCount = totalFrames; 605 } 606#endif 607 608 // mToggle toggles each time a track is started on a given channel. 609 // The toggle is concatenated with the SoundChannel address and passed to AudioTrack 610 // as callback user data. This enables the detection of callbacks received from the old 611 // audio track while the new one is being started and avoids processing them with 612 // wrong audio audio buffer size (mAudioBufferSize) 613 unsigned long toggle = mToggle ^ 1; 614 void *userData = (void *)((unsigned long)this | toggle); 615 audio_channel_mask_t channelMask = audio_channel_out_mask_from_count(numChannels); 616 617 // do not create a new audio track if current track is compatible with sample parameters 618#ifdef USE_SHARED_MEM_BUFFER 619 newTrack = new AudioTrack(streamType, sampleRate, sample->format(), 620 channelMask, sample->getIMemory(), AUDIO_OUTPUT_FLAG_FAST, callback, userData); 621#else 622 newTrack = new AudioTrack(streamType, sampleRate, sample->format(), 623 channelMask, frameCount, AUDIO_OUTPUT_FLAG_FAST, callback, userData, 624 bufferFrames); 625#endif 626 oldTrack = mAudioTrack; 627 status = newTrack->initCheck(); 628 if (status != NO_ERROR) { 629 ALOGE("Error creating AudioTrack"); 630 goto exit; 631 } 632 ALOGV("setVolume %p", newTrack.get()); 633 newTrack->setVolume(leftVolume, rightVolume); 634 newTrack->setLoop(0, frameCount, loop); 635 636 // From now on, AudioTrack callbacks received with previous toggle value will be ignored. 637 mToggle = toggle; 638 mAudioTrack = newTrack; 639 mPos = 0; 640 mSample = sample; 641 mChannelID = nextChannelID; 642 mPriority = priority; 643 mLoop = loop; 644 mLeftVolume = leftVolume; 645 mRightVolume = rightVolume; 646 mNumChannels = numChannels; 647 mRate = rate; 648 clearNextEvent(); 649 mState = PLAYING; 650 mAudioTrack->start(); 651 mAudioBufferSize = newTrack->frameCount()*newTrack->frameSize(); 652 } 653 654exit: 655 ALOGV("delete oldTrack %p", oldTrack.get()); 656 if (status != NO_ERROR) { 657 mAudioTrack.clear(); 658 } 659} 660 661void SoundChannel::nextEvent() 662{ 663 sp<Sample> sample; 664 int nextChannelID; 665 float leftVolume; 666 float rightVolume; 667 int priority; 668 int loop; 669 float rate; 670 671 // check for valid event 672 { 673 Mutex::Autolock lock(&mLock); 674 nextChannelID = mNextEvent.channelID(); 675 if (nextChannelID == 0) { 676 ALOGV("stolen channel has no event"); 677 return; 678 } 679 680 sample = mNextEvent.sample(); 681 leftVolume = mNextEvent.leftVolume(); 682 rightVolume = mNextEvent.rightVolume(); 683 priority = mNextEvent.priority(); 684 loop = mNextEvent.loop(); 685 rate = mNextEvent.rate(); 686 } 687 688 ALOGV("Starting stolen channel %d -> %d", channelID(), nextChannelID); 689 play(sample, nextChannelID, leftVolume, rightVolume, priority, loop, rate); 690} 691 692void SoundChannel::callback(int event, void* user, void *info) 693{ 694 SoundChannel* channel = static_cast<SoundChannel*>((void *)((unsigned long)user & ~1)); 695 696 channel->process(event, info, (unsigned long)user & 1); 697} 698 699void SoundChannel::process(int event, void *info, unsigned long toggle) 700{ 701 //ALOGV("process(%d)", mChannelID); 702 703 Mutex::Autolock lock(&mLock); 704 705 AudioTrack::Buffer* b = NULL; 706 if (event == AudioTrack::EVENT_MORE_DATA) { 707 b = static_cast<AudioTrack::Buffer *>(info); 708 } 709 710 if (mToggle != toggle) { 711 ALOGV("process wrong toggle %p channel %d", this, mChannelID); 712 if (b != NULL) { 713 b->size = 0; 714 } 715 return; 716 } 717 718 sp<Sample> sample = mSample; 719 720// ALOGV("SoundChannel::process event %d", event); 721 722 if (event == AudioTrack::EVENT_MORE_DATA) { 723 724 // check for stop state 725 if (b->size == 0) return; 726 727 if (mState == IDLE) { 728 b->size = 0; 729 return; 730 } 731 732 if (sample != 0) { 733 // fill buffer 734 uint8_t* q = (uint8_t*) b->i8; 735 size_t count = 0; 736 737 if (mPos < (int)sample->size()) { 738 uint8_t* p = sample->data() + mPos; 739 count = sample->size() - mPos; 740 if (count > b->size) { 741 count = b->size; 742 } 743 memcpy(q, p, count); 744// ALOGV("fill: q=%p, p=%p, mPos=%u, b->size=%u, count=%d", q, p, mPos, b->size, 745// count); 746 } else if (mPos < mAudioBufferSize) { 747 count = mAudioBufferSize - mPos; 748 if (count > b->size) { 749 count = b->size; 750 } 751 memset(q, 0, count); 752// ALOGV("fill extra: q=%p, mPos=%u, b->size=%u, count=%d", q, mPos, b->size, count); 753 } 754 755 mPos += count; 756 b->size = count; 757 //ALOGV("buffer=%p, [0]=%d", b->i16, b->i16[0]); 758 } 759 } else if (event == AudioTrack::EVENT_UNDERRUN || event == AudioTrack::EVENT_BUFFER_END || 760 event == AudioTrack::EVENT_NEW_IAUDIOTRACK) { 761 ALOGV("process %p channel %d event %s", 762 this, mChannelID, (event == AudioTrack::EVENT_UNDERRUN) ? "UNDERRUN" : 763 (event == AudioTrack::EVENT_BUFFER_END) ? "BUFFER_END" : "NEW_IAUDIOTRACK"); 764 mSoundPool->addToStopList(this); 765 } else if (event == AudioTrack::EVENT_LOOP_END) { 766 ALOGV("End loop %p channel %d", this, mChannelID); 767 } else { 768 ALOGW("SoundChannel::process unexpected event %d", event); 769 } 770} 771 772 773// call with lock held 774bool SoundChannel::doStop_l() 775{ 776 if (mState != IDLE) { 777 setVolume_l(0, 0); 778 ALOGV("stop"); 779 mAudioTrack->stop(); 780 mSample.clear(); 781 mState = IDLE; 782 mPriority = IDLE_PRIORITY; 783 return true; 784 } 785 return false; 786} 787 788// call with lock held and sound pool lock held 789void SoundChannel::stop_l() 790{ 791 if (doStop_l()) { 792 mSoundPool->done_l(this); 793 } 794} 795 796// call with sound pool lock held 797void SoundChannel::stop() 798{ 799 bool stopped; 800 { 801 Mutex::Autolock lock(&mLock); 802 stopped = doStop_l(); 803 } 804 805 if (stopped) { 806 mSoundPool->done_l(this); 807 } 808} 809 810//FIXME: Pause is a little broken right now 811void SoundChannel::pause() 812{ 813 Mutex::Autolock lock(&mLock); 814 if (mState == PLAYING) { 815 ALOGV("pause track"); 816 mState = PAUSED; 817 mAudioTrack->pause(); 818 } 819} 820 821void SoundChannel::autoPause() 822{ 823 Mutex::Autolock lock(&mLock); 824 if (mState == PLAYING) { 825 ALOGV("pause track"); 826 mState = PAUSED; 827 mAutoPaused = true; 828 mAudioTrack->pause(); 829 } 830} 831 832void SoundChannel::resume() 833{ 834 Mutex::Autolock lock(&mLock); 835 if (mState == PAUSED) { 836 ALOGV("resume track"); 837 mState = PLAYING; 838 mAutoPaused = false; 839 mAudioTrack->start(); 840 } 841} 842 843void SoundChannel::autoResume() 844{ 845 Mutex::Autolock lock(&mLock); 846 if (mAutoPaused && (mState == PAUSED)) { 847 ALOGV("resume track"); 848 mState = PLAYING; 849 mAutoPaused = false; 850 mAudioTrack->start(); 851 } 852} 853 854void SoundChannel::setRate(float rate) 855{ 856 Mutex::Autolock lock(&mLock); 857 if (mAudioTrack != NULL && mSample != 0) { 858 uint32_t sampleRate = uint32_t(float(mSample->sampleRate()) * rate + 0.5); 859 mAudioTrack->setSampleRate(sampleRate); 860 mRate = rate; 861 } 862} 863 864// call with lock held 865void SoundChannel::setVolume_l(float leftVolume, float rightVolume) 866{ 867 mLeftVolume = leftVolume; 868 mRightVolume = rightVolume; 869 if (mAudioTrack != NULL) 870 mAudioTrack->setVolume(leftVolume, rightVolume); 871} 872 873void SoundChannel::setVolume(float leftVolume, float rightVolume) 874{ 875 Mutex::Autolock lock(&mLock); 876 setVolume_l(leftVolume, rightVolume); 877} 878 879void SoundChannel::setLoop(int loop) 880{ 881 Mutex::Autolock lock(&mLock); 882 if (mAudioTrack != NULL && mSample != 0) { 883 uint32_t loopEnd = mSample->size()/mNumChannels/ 884 ((mSample->format() == AUDIO_FORMAT_PCM_16_BIT) ? sizeof(int16_t) : sizeof(uint8_t)); 885 mAudioTrack->setLoop(0, loopEnd, loop); 886 mLoop = loop; 887 } 888} 889 890SoundChannel::~SoundChannel() 891{ 892 ALOGV("SoundChannel destructor %p", this); 893 { 894 Mutex::Autolock lock(&mLock); 895 clearNextEvent(); 896 doStop_l(); 897 } 898 // do not call AudioTrack destructor with mLock held as it will wait for the AudioTrack 899 // callback thread to exit which may need to execute process() and acquire the mLock. 900 mAudioTrack.clear(); 901} 902 903void SoundChannel::dump() 904{ 905 ALOGV("mState = %d mChannelID=%d, mNumChannels=%d, mPos = %d, mPriority=%d, mLoop=%d", 906 mState, mChannelID, mNumChannels, mPos, mPriority, mLoop); 907} 908 909void SoundEvent::set(const sp<Sample>& sample, int channelID, float leftVolume, 910 float rightVolume, int priority, int loop, float rate) 911{ 912 mSample = sample; 913 mChannelID = channelID; 914 mLeftVolume = leftVolume; 915 mRightVolume = rightVolume; 916 mPriority = priority; 917 mLoop = loop; 918 mRate =rate; 919} 920 921} // end namespace android 922