void initStereoFormatsWithoutPassthrough()
{
AudioStreamBasicDescription streamFormat;
FillOutASBDForLPCM(streamFormat, 96000, 2, 16, 16, false, false, false);
stereoFormatsWithoutPassthrough.push_back(streamFormat); // 0
FillOutASBDForLPCM(streamFormat, 48000, 2, 16, 16, false, false, false);
stereoFormatsWithoutPassthrough.push_back(streamFormat); // 1
FillOutASBDForLPCM(streamFormat, 44100, 2, 16, 16, false, false, false);
stereoFormatsWithoutPassthrough.push_back(streamFormat); // 2
FillOutASBDForLPCM(streamFormat, 96000, 2, 20, 20, false, false, false);
stereoFormatsWithoutPassthrough.push_back(streamFormat); // 3
FillOutASBDForLPCM(streamFormat, 48000, 2, 20, 20, false, false, false);
stereoFormatsWithoutPassthrough.push_back(streamFormat); // 4
FillOutASBDForLPCM(streamFormat, 44100, 2, 20, 20, false, false, false);
stereoFormatsWithoutPassthrough.push_back(streamFormat); // 5
FillOutASBDForLPCM(streamFormat, 96000, 2, 24, 24, false, false, false);
stereoFormatsWithoutPassthrough.push_back(streamFormat); // 6
FillOutASBDForLPCM(streamFormat, 48000, 2, 24, 24, false, false, false);
stereoFormatsWithoutPassthrough.push_back(streamFormat); // 7
FillOutASBDForLPCM(streamFormat, 44100, 2, 24, 24, false, false, false);
stereoFormatsWithoutPassthrough.push_back(streamFormat); // 8
}
void addLPCMFormats(std::vector<AudioStreamBasicDescription> &streamFormats)
{
AudioStreamBasicDescription streamFormat;
FillOutASBDForLPCM(streamFormat, 96000, 8, 16, 16, false, false, false);
streamFormats.push_back(streamFormat); // + 0
FillOutASBDForLPCM(streamFormat, 48000, 8, 16, 16, false, false, false);
streamFormats.push_back(streamFormat); // + 1
FillOutASBDForLPCM(streamFormat, 44100, 8, 16, 16, false, false, false);
streamFormats.push_back(streamFormat); // + 2
FillOutASBDForLPCM(streamFormat, 96000, 8, 20, 20, false, false, false);
streamFormats.push_back(streamFormat); // + 3
FillOutASBDForLPCM(streamFormat, 48000, 8, 20, 20, false, false, false);
streamFormats.push_back(streamFormat); // + 4
FillOutASBDForLPCM(streamFormat, 44100, 8, 20, 20, false, false, false);
streamFormats.push_back(streamFormat); // + 5
FillOutASBDForLPCM(streamFormat, 96000, 8, 24, 24, false, false, false);
streamFormats.push_back(streamFormat); // + 6
FillOutASBDForLPCM(streamFormat, 48000, 8, 24, 24, false, false, false);
streamFormats.push_back(streamFormat); // + 7
FillOutASBDForLPCM(streamFormat, 44100, 8, 24, 24, false, false, false);
streamFormats.push_back(streamFormat); // + 8
}
void addPassthroughFormats(std::vector<AudioStreamBasicDescription> &streamFormats)
{
AudioStreamBasicDescription streamFormat;
FillOutASBDForLPCM(streamFormat, 96000, 2, 16, 16, false, false, false);
streamFormat.mFormatID = kAudioFormat60958AC3;
streamFormats.push_back(streamFormat); // stereoFormtsWithoutPassthrough.size() + 0
FillOutASBDForLPCM(streamFormat, 48000, 2, 16, 16, false, false, false);
streamFormat.mFormatID = kAudioFormat60958AC3;
streamFormats.push_back(streamFormat); // stereoFormtsWithoutPassthrough.size() + 1
FillOutASBDForLPCM(streamFormat, 44100, 2, 16, 16, false, false, false);
streamFormat.mFormatID = kAudioFormat60958AC3;
streamFormats.push_back(streamFormat); // stereoFormtsWithoutPassthrough.size() + 2
}
bool ExtAudioFileAudioSource::init(const RString& path, bool loadIntoMemory)
{
if(mLoadedInMemory && loadIntoMemory)
return true;
// FIXME: query the file to find out how many channels instead of hardcoding.
CFURLRef path_url = CFURLCreateFromFileSystemRepresentation (kCFAllocatorDefault,
(const UInt8*)path.data(),
path.length(),
false
);
OSStatus err = ExtAudioFileOpenURL(path_url, &mAudioFile);
if(err)
{
printCode("ExtAudioFileOpenURL: ", err);
return false;
}
UInt32 propSize = sizeof(mClientFormat);
err = ExtAudioFileGetProperty(mAudioFile, kExtAudioFileProperty_FileDataFormat, &propSize, &mClientFormat);
propSize = sizeof(mTotalFrames);
err = ExtAudioFileGetProperty(mAudioFile, kExtAudioFileProperty_FileLengthFrames, &propSize, &mTotalFrames);
// Setup output format
FillOutASBDForLPCM(mFormat, getSampleRate(), getNumChannels(), 32, 32, true, false,true);
err = ExtAudioFileSetProperty(mAudioFile, kExtAudioFileProperty_ClientDataFormat, sizeof(mFormat), &mFormat);
if(err)
{
printCode("ExtAudioFileSetProperty: ", err);
return false;
}
// Allocate our buffer list with NUM_CHANNELS buffers in it.
mpBufferList = (AudioBufferList *)malloc(sizeof(AudioBufferList) + (getNumChannels() - 1) * sizeof(AudioBuffer));
mpBufferList->mNumberBuffers = getNumChannels();
return BufferedAudioSource::init(path, loadIntoMemory);
}
bool CoreAudioSound::Start()
{
OSStatus err;
AURenderCallbackStruct callback_struct;
AudioStreamBasicDescription format;
ComponentDescription desc;
Component component;
desc.componentType = kAudioUnitType_Output;
desc.componentSubType = kAudioUnitSubType_DefaultOutput;
desc.componentFlags = 0;
desc.componentFlagsMask = 0;
desc.componentManufacturer = kAudioUnitManufacturer_Apple;
component = FindNextComponent(nullptr, &desc);
if (component == nullptr) {
ERROR_LOG(AUDIO, "error finding audio component");
return false;
}
err = OpenAComponent(component, &audioUnit);
if (err != noErr) {
ERROR_LOG(AUDIO, "error opening audio component");
return false;
}
FillOutASBDForLPCM(format, m_mixer->GetSampleRate(),
2, 16, 16, false, false, false);
err = AudioUnitSetProperty(audioUnit,
kAudioUnitProperty_StreamFormat,
kAudioUnitScope_Input, 0, &format,
sizeof(AudioStreamBasicDescription));
if (err != noErr) {
ERROR_LOG(AUDIO, "error setting audio format");
return false;
}
callback_struct.inputProc = callback;
callback_struct.inputProcRefCon = this;
err = AudioUnitSetProperty(audioUnit,
kAudioUnitProperty_SetRenderCallback,
kAudioUnitScope_Input, 0, &callback_struct,
sizeof callback_struct);
if (err != noErr) {
ERROR_LOG(AUDIO, "error setting audio callback");
return false;
}
err = AudioUnitSetParameter(audioUnit,
kHALOutputParam_Volume,
kAudioUnitParameterFlag_Output, 0,
m_volume / 100., 0);
if (err != noErr)
ERROR_LOG(AUDIO, "error setting volume");
err = AudioUnitInitialize(audioUnit);
if (err != noErr) {
ERROR_LOG(AUDIO, "error initializing audiounit");
return false;
}
err = AudioOutputUnitStart(audioUnit);
if (err != noErr) {
ERROR_LOG(AUDIO, "error starting audiounit");
return false;
}
return true;
}
/*
*Setup RemoteIO Audio Unit.
* (TODO) provide dynamic configuration options here.
*/
int MUEAudioIO::setupIO()
{
try {
// Open the output unit
AudioComponentDescription desc;
desc.componentType = kAudioUnitType_Output;
desc.componentSubType = kAudioUnitSubType_RemoteIO;
desc.componentManufacturer = kAudioUnitManufacturer_Apple;
desc.componentFlags = 0;
desc.componentFlagsMask = 0;
AudioComponent comp = AudioComponentFindNext(NULL, &desc);
AudioComponentInstanceNew(comp, &rioUnit);
UInt32 one = 1;
AudioUnitSetProperty(rioUnit, kAudioOutputUnitProperty_EnableIO, kAudioUnitScope_Input, 1, &one, sizeof(one));
// Setup Callbacks--------------------------------------------------
printf("setupIO: Initializing Callbacks\n");
AURenderCallbackStruct inProc;
inProc.inputProc = MUEinputCallback;
inProc.inputProcRefCon = this;
AudioUnitSetProperty(rioUnit, kAudioOutputUnitProperty_SetInputCallback,
kAudioUnitScope_Global, AUDIO_INPUT_BUS, &inProc, sizeof(inProc));
inProc.inputProc = MUEoutputCallback;
inProc.inputProcRefCon = this;
AudioUnitSetProperty(rioUnit, kAudioUnitProperty_SetRenderCallback,
kAudioUnitScope_Global, AUDIO_OUTPUT_BUS, &inProc, sizeof(inProc));
//-----------------------------------------------------------------
// Enable Input and Output------------------------------------------
// Enable Output....
UInt32 flag = 1;
OSStatus status = AudioUnitSetProperty(rioUnit, kAudioOutputUnitProperty_EnableIO,
kAudioUnitScope_Output, AUDIO_OUTPUT_BUS, &flag, sizeof(flag));
if (status != noErr)
{
printf("MUEAudioIO::setupIO: Enable Output failed: status = %d\n", status);
}
// Enable Input....
status = AudioUnitSetProperty(rioUnit, kAudioOutputUnitProperty_EnableIO,
kAudioUnitScope_Input, AUDIO_INPUT_BUS, &flag, sizeof(flag));
if (status != noErr)
{
printf("MUEAudioIO::setupIO: Enable Input failed: status = %d\n", status);
}
//-----------------------------------------------------------------
// Set up audio I/0 format, data type whatever. Describe the stream.
// AudioStreamBasicDescription streamDesc;
// This next function is built into Core Audio
FillOutASBDForLPCM(m_streamDesc, AUDIO_SAMPLE_RATE, AUDIO_NUM_CHANNELS, AUDIO_BIT_DEPTH,
AUDIO_BIT_DEPTH, false, false, AUDIO_FORMAT_IS_NONINTERLEAVED);
// XThrowIfError(AudioUnitGetProperty(rioUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, 0, &m_streamDesc, sizeof(m_streamDesc) ), "couldn't get the remote I/O unit's output client format");
// TODO: why is scope input associated with output bus? and vice versa?
AudioUnitSetProperty(rioUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Input, AUDIO_OUTPUT_BUS, &m_streamDesc, sizeof(m_streamDesc));
AudioUnitSetProperty(rioUnit, kAudioUnitProperty_StreamFormat, kAudioUnitScope_Output, AUDIO_INPUT_BUS, &m_streamDesc, sizeof(m_streamDesc));
/* // Prints audio configuration settings, why wont this print?
printf(" m_streamDesc initialized with AUDIO_SAMPLE_RATE : %f", AUDIO_SAMPLE_RATE);
printf(" AUDIO_NUM_CHANNELS : %d", AUDIO_NUM_CHANNELS);
printf(" AUDIO_BIT_DEPTH : %d", AUDIO_BIT_DEPTH);
*/
AudioUnitInitialize(rioUnit);
}
catch (...) {
printf("An unknown error occurred\n");
return 1;
}
return 0;
}