Semaphore::Semaphore()
{
kern_return_t result = semaphore_create(mach_task_self(), &mSemaphore, SYNC_POLICY_FIFO, 0);
if(KERN_SUCCESS != result) {
LOGGER_CRIT("org.sbooth.AudioEngine.Semaphore", "semaphore_create failed: " << mach_error_string(result));
throw std::runtime_error("Unable to create the semaphore");
}
}
void Guard::Signal()
{
int success = pthread_cond_signal(&mCondition);
if(0 != success) {
LOGGER_CRIT("org.sbooth.AudioEngine.Guard", "pthread_cond_signal failed: " << strerror(success));
throw std::runtime_error("Unable to signal the condition variable");
}
}
Guard::Guard()
{
int success = pthread_cond_init(&mCondition, nullptr);
if(0 != success) {
LOGGER_CRIT("org.sbooth.AudioEngine.Guard", "pthread_cond_init failed: " << strerror(success));
throw std::runtime_error("Unable to initialize the condition variable");
}
}
void Guard::Wait()
{
pthread_t currentThread = pthread_self();
if(!pthread_equal(mOwner, currentThread))
throw std::runtime_error("A thread is attempting to wait on a condition variable without a locked mutex");
mOwner = 0;
int success = pthread_cond_wait(&mCondition, &mMutex);
if(0 != success) {
LOGGER_CRIT("org.sbooth.AudioEngine.Guard", "pthread_cond_wait failed: " << strerror(success));
throw std::runtime_error("Unable to wait for the condition variable");
}
mOwner = currentThread;
}
bool Guard::WaitUntil(struct timespec absoluteTime)
{
pthread_t currentThread = pthread_self();
if(!pthread_equal(mOwner, currentThread))
throw std::runtime_error("A thread is attempting to wait on a condition variable without a locked mutex");
mOwner = 0;
int success = pthread_cond_timedwait(&mCondition, &mMutex, &absoluteTime);
if(ETIMEDOUT != success && 0 != success) {
LOGGER_CRIT("org.sbooth.AudioEngine.Guard", "pthread_cond_timedwait failed: " << strerror(success));
throw std::runtime_error("Unable to wait for the condition variable");
}
mOwner = currentThread;
return (ETIMEDOUT == success);
}
bool SFB::Audio::TrueAudioDecoder::_Open(CFErrorRef *error)
{
mCallbacks = unique_callback_wrapper_ptr(new TTA_io_callback_wrapper);
mCallbacks->iocb.read = read_callback;
mCallbacks->iocb.write = nullptr;
mCallbacks->iocb.seek = seek_callback;
mCallbacks->decoder = this;
TTA_info streamInfo;
try {
mDecoder = unique_tta_ptr(new tta::tta_decoder((TTA_io_callback *)mCallbacks.get()));
mDecoder->init_get_info(&streamInfo, 0);
}
catch(tta::tta_exception e) {
LOGGER_CRIT("org.sbooth.AudioEngine.Decoder.TrueAudio", "Error creating True Audio decoder: " << e.code());
}
if(!mDecoder) {
if(error) {
SFB::CFString description = CFCopyLocalizedString(CFSTR("The file “%@” is not a valid True Audio file."), "");
SFB::CFString failureReason = CFCopyLocalizedString(CFSTR("Not a True Audio file"), "");
SFB::CFString recoverySuggestion = CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), "");
*error = CreateErrorForURL(Decoder::ErrorDomain, Decoder::InputOutputError, description, mInputSource->GetURL(), failureReason, recoverySuggestion);
}
return false;
}
mFormat.mFormatID = kAudioFormatLinearPCM;
mFormat.mFormatFlags = kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsSignedInteger;
mFormat.mSampleRate = streamInfo.sps;
mFormat.mChannelsPerFrame = streamInfo.nch;
mFormat.mBitsPerChannel = streamInfo.bps;
mFormat.mBytesPerPacket = ((streamInfo.bps + 7) / 8) * mFormat.mChannelsPerFrame;
mFormat.mFramesPerPacket = 1;
mFormat.mBytesPerFrame = mFormat.mBytesPerPacket * mFormat.mFramesPerPacket;
mFormat.mReserved = 0;
// Support 4 to 32 bits per sample (True Audio may support more or less, but the documentation didn't say)
switch(mFormat.mBitsPerChannel) {
case 8:
case 16:
case 24:
case 32:
mFormat.mFormatFlags |= kAudioFormatFlagIsPacked;
break;
case 4 ... 7:
case 9 ... 15:
case 17 ... 23:
case 25 ... 31:
// Align high because Apple's AudioConverter doesn't handle low alignment
mFormat.mFormatFlags |= kAudioFormatFlagIsAlignedHigh;
break;
default:
{
LOGGER_CRIT("org.sbooth.AudioEngine.Decoder.TrueAudio", "Unsupported bit depth: " << mFormat.mBitsPerChannel)
if(error) {
SFB::CFString description = CFCopyLocalizedString(CFSTR("The file “%@” is not a supported True Audio file."), "");
SFB::CFString failureReason = CFCopyLocalizedString(CFSTR("Bit depth not supported"), "");
SFB::CFString recoverySuggestion = CFCopyLocalizedString(CFSTR("The file's bit depth is not supported."), "");
*error = CreateErrorForURL(Decoder::ErrorDomain, Decoder::FileFormatNotSupportedError, description, mInputSource->GetURL(), failureReason, recoverySuggestion);
}
return false;
}
}
// Set up the source format
mSourceFormat.mFormatID = 'TTA ';
mSourceFormat.mSampleRate = streamInfo.sps;
mSourceFormat.mChannelsPerFrame = streamInfo.nch;
mSourceFormat.mBitsPerChannel = streamInfo.bps;
// Setup the channel layout
switch(streamInfo.nch) {
case 1: mChannelLayout = ChannelLayout::ChannelLayoutWithTag(kAudioChannelLayoutTag_Mono); break;
case 2: mChannelLayout = ChannelLayout::ChannelLayoutWithTag(kAudioChannelLayoutTag_Stereo); break;
case 4: mChannelLayout = ChannelLayout::ChannelLayoutWithTag(kAudioChannelLayoutTag_Quadraphonic); break;
}
mTotalFrames = streamInfo.samples;
return true;
}
bool SFB::Audio::CoreAudioDecoder::_Open(CFErrorRef *error)
{
// Open the input file
OSStatus result = AudioFileOpenWithCallbacks(this, myAudioFile_ReadProc, nullptr, myAudioFile_GetSizeProc, nullptr, 0, &mAudioFile);
if(noErr != result) {
LOGGER_CRIT("org.sbooth.AudioEngine.Decoder.CoreAudio", "AudioFileOpenWithCallbacks failed: " << result);
if(error) {
SFB::CFString description = CFCopyLocalizedString(CFSTR("The format of the file “%@” was not recognized."), "");
SFB::CFString failureReason = CFCopyLocalizedString(CFSTR("File Format Not Recognized"), "");
SFB::CFString recoverySuggestion = CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), "");
*error = CreateErrorForURL(Decoder::ErrorDomain, Decoder::InputOutputError, description, mInputSource->GetURL(), failureReason, recoverySuggestion);
}
return false;
}
result = ExtAudioFileWrapAudioFileID(mAudioFile, false, &mExtAudioFile);
if(noErr != result) {
LOGGER_CRIT("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileWrapAudioFileID failed: " << result);
if(error) {
SFB::CFString description = CFCopyLocalizedString(CFSTR("The format of the file “%@” was not recognized."), "");
SFB::CFString failureReason = CFCopyLocalizedString(CFSTR("File Format Not Recognized"), "");
SFB::CFString recoverySuggestion = CFCopyLocalizedString(CFSTR("The file's extension may not match the file's type."), "");
*error = CreateErrorForURL(Decoder::ErrorDomain, Decoder::InputOutputError, description, mInputSource->GetURL(), failureReason, recoverySuggestion);
}
result = AudioFileClose(mAudioFile);
if(noErr != result)
LOGGER_NOTICE("org.sbooth.AudioEngine.Decoder.CoreAudio", "AudioFileClose failed: " << result);
mAudioFile = nullptr;
return false;
}
// Query file format
UInt32 dataSize = sizeof(mSourceFormat);
result = ExtAudioFileGetProperty(mExtAudioFile, kExtAudioFileProperty_FileDataFormat, &dataSize, &mSourceFormat);
if(noErr != result) {
LOGGER_CRIT("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileGetProperty (kExtAudioFileProperty_FileDataFormat) failed: " << result);
result = ExtAudioFileDispose(mExtAudioFile);
if(noErr != result)
LOGGER_NOTICE("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileDispose failed: " << result);
result = AudioFileClose(mAudioFile);
if(noErr != result)
LOGGER_NOTICE("org.sbooth.AudioEngine.Decoder.CoreAudio", "AudioFileClose failed: " << result);
mAudioFile = nullptr;
mExtAudioFile = nullptr;
return false;
}
// Tell the ExtAudioFile the format in which we'd like our data
// For Linear PCM formats, leave the data untouched
if(kAudioFormatLinearPCM == mSourceFormat.mFormatID)
mFormat = mSourceFormat;
// For Apple Lossless, convert to high-aligned signed ints in 32 bits
else if(kAudioFormatAppleLossless == mSourceFormat.mFormatID) {
mFormat.mFormatID = kAudioFormatLinearPCM;
mFormat.mFormatFlags = kAudioFormatFlagsNativeEndian | kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsAlignedHigh;
mFormat.mSampleRate = mSourceFormat.mSampleRate;
mFormat.mChannelsPerFrame = mSourceFormat.mChannelsPerFrame;
if(kAppleLosslessFormatFlag_16BitSourceData == mSourceFormat.mFormatFlags)
mFormat.mBitsPerChannel = 16;
else if(kAppleLosslessFormatFlag_20BitSourceData == mSourceFormat.mFormatFlags)
mFormat.mBitsPerChannel = 20;
else if(kAppleLosslessFormatFlag_24BitSourceData == mSourceFormat.mFormatFlags)
mFormat.mBitsPerChannel = 24;
else if(kAppleLosslessFormatFlag_32BitSourceData == mSourceFormat.mFormatFlags)
mFormat.mBitsPerChannel = 32;
mFormat.mBytesPerPacket = 4 * mFormat.mChannelsPerFrame;
mFormat.mFramesPerPacket = 1;
mFormat.mBytesPerFrame = mFormat.mBytesPerPacket * mFormat.mFramesPerPacket;
mFormat.mReserved = 0;
}
// For all other formats convert to the canonical Core Audio format
else {
mFormat.mFormatID = kAudioFormatLinearPCM;
mFormat.mFormatFlags = kAudioFormatFlagsNativeFloatPacked | kAudioFormatFlagIsNonInterleaved;
mFormat.mSampleRate = mSourceFormat.mSampleRate;
mFormat.mChannelsPerFrame = mSourceFormat.mChannelsPerFrame;
mFormat.mBitsPerChannel = 32;
mFormat.mBytesPerPacket = (mFormat.mBitsPerChannel / 8);
mFormat.mFramesPerPacket = 1;
mFormat.mBytesPerFrame = mFormat.mBytesPerPacket * mFormat.mFramesPerPacket;
mFormat.mReserved = 0;
}
result = ExtAudioFileSetProperty(mExtAudioFile, kExtAudioFileProperty_ClientDataFormat, sizeof(mFormat), &mFormat);
if(noErr != result) {
LOGGER_CRIT("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileSetProperty (kExtAudioFileProperty_ClientDataFormat) failed: " << result);
result = ExtAudioFileDispose(mExtAudioFile);
if(noErr != result)
LOGGER_NOTICE("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileDispose failed: " << result);
result = AudioFileClose(mAudioFile);
if(noErr != result)
LOGGER_NOTICE("org.sbooth.AudioEngine.Decoder.CoreAudio", "AudioFileClose failed: " << result);
mAudioFile = nullptr;
mExtAudioFile = nullptr;
return false;
}
// Setup the channel layout
// There is a bug in EAF where if the underlying AF doesn't return a channel layout it returns an empty struct
// result = ExtAudioFileGetPropertyInfo(mExtAudioFile, kExtAudioFileProperty_FileChannelLayout, &dataSize, nullptr);
result = AudioFileGetPropertyInfo(mAudioFile, kAudioFilePropertyChannelLayout, &dataSize, nullptr);
if(noErr == result) {
auto channelLayout = (AudioChannelLayout *)malloc(dataSize);
// result = ExtAudioFileGetProperty(mExtAudioFile, kExtAudioFileProperty_FileChannelLayout, &dataSize, mChannelLayout);
result = AudioFileGetProperty(mAudioFile, kAudioFilePropertyChannelLayout, &dataSize, channelLayout);
if(noErr != result) {
// LOGGER_ERR("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileGetProperty (kExtAudioFileProperty_FileChannelLayout) failed: " << result);
LOGGER_ERR("org.sbooth.AudioEngine.Decoder.CoreAudio", "AudioFileGetProperty (kAudioFilePropertyChannelLayout) failed: " << result);
free(channelLayout);
result = ExtAudioFileDispose(mExtAudioFile);
if(noErr != result)
LOGGER_NOTICE("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileDispose failed: " << result);
result = AudioFileClose(mAudioFile);
if(noErr != result)
LOGGER_NOTICE("org.sbooth.AudioEngine.Decoder.CoreAudio", "AudioFileClose failed: " << result);
mAudioFile = nullptr;
mExtAudioFile = nullptr;
return false;
}
mChannelLayout = channelLayout;
free(channelLayout);
}
else
// LOGGER_ERR("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileGetPropertyInfo (kExtAudioFileProperty_FileChannelLayout) failed: " << result);
LOGGER_ERR("org.sbooth.AudioEngine.Decoder.CoreAudio", "AudioFileGetPropertyInfo (kAudioFilePropertyChannelLayout) failed: " << result);
// Work around bugs in ExtAudioFile: http://lists.apple.com/archives/coreaudio-api/2009/Nov/msg00119.html
// Synopsis: ExtAudioFileTell() and ExtAudioFileSeek() are broken for m4a files
AudioFileID audioFile;
dataSize = sizeof(audioFile);
result = ExtAudioFileGetProperty(mExtAudioFile, kExtAudioFileProperty_AudioFile, &dataSize, &audioFile);
if(noErr != result) {
LOGGER_ERR("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileGetProperty (kExtAudioFileProperty_AudioFile) failed: " << result);
result = ExtAudioFileDispose(mExtAudioFile);
if(noErr != result)
LOGGER_NOTICE("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileDispose failed: " << result);
result = AudioFileClose(mAudioFile);
if(noErr != result)
LOGGER_NOTICE("org.sbooth.AudioEngine.Decoder.CoreAudio", "AudioFileClose failed: " << result);
mAudioFile = nullptr;
mExtAudioFile = nullptr;
return false;
}
AudioFileTypeID fileFormat;
dataSize = sizeof(fileFormat);
result = AudioFileGetProperty(audioFile, kAudioFilePropertyFileFormat, &dataSize, &fileFormat);
if(noErr != result) {
LOGGER_ERR("org.sbooth.AudioEngine.Decoder.CoreAudio", "AudioFileGetProperty (kAudioFilePropertyFileFormat) failed: " << result);
result = ExtAudioFileDispose(mExtAudioFile);
if(noErr != result)
LOGGER_NOTICE("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileDispose failed: " << result);
result = AudioFileClose(mAudioFile);
if(noErr != result)
LOGGER_NOTICE("org.sbooth.AudioEngine.Decoder.CoreAudio", "AudioFileClose failed: " << result);
mAudioFile = nullptr;
mExtAudioFile = nullptr;
return false;
}
if(kAudioFileM4AType == fileFormat || kAudioFileMPEG4Type == fileFormat || kAudioFileAAC_ADTSType == fileFormat)
mUseM4AWorkarounds = true;
#if 0
// This was supposed to determine if ExtAudioFile had been fixed, but even though
// it passes on 10.6.2 things are not behaving properly
SInt64 currentFrame = -1;
result = ExtAudioFileTell(mExtAudioFile, ¤tFrame);
if(noErr != result) {
LOGGER_ERR("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileTell failed: " << result);
result = ExtAudioFileDispose(mExtAudioFile);
if(noErr != result)
LOGGER_NOTICE("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileDispose failed: " << result);
result = AudioFileClose(mAudioFile);
if(noErr != result)
LOGGER_NOTICE("org.sbooth.AudioEngine.Decoder.CoreAudio", "AudioFileClose failed: " << result);
mAudioFile = nullptr;
mExtAudioFile = nullptr;
return false;
}
if(0 > currentFrame)
mUseM4AWorkarounds = true;
#endif
return true;
}
