SInt64 SFB::Audio::CoreAudioDecoder::_GetCurrentFrame() const
{
if(mUseM4AWorkarounds)
return mCurrentFrame;
SInt64 currentFrame = -1;
OSStatus result = ExtAudioFileTell(mExtAudioFile, ¤tFrame);
if(noErr != result) {
LOGGER_ERR("org.sbooth.AudioEngine.Decoder.CoreAudio", "ExtAudioFileTell failed: " << result);
return -1;
}
return currentFrame;
}
int64_t ExtAFSource::getPosition()
{
int64_t pos;
CHECKCA(ExtAudioFileTell(m_eaf, &pos));
return pos;
}
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;
}