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#include "portaudiocpp/DirectionSpecificStreamParameters.hxx"
#include "portaudiocpp/Device.hxx"
namespace portaudio
{
// -----------------------------------------------------------------------------------
//////
/// Returns a `nil' DirectionSpecificStreamParameters object. This can be used to
/// specify that one direction of a Stream is not required (i.e. when creating
/// a half-duplex Stream). All fields of the null DirectionSpecificStreamParameters
/// object are invalid except for the device and the number of channel, which are set
/// to paNoDevice and 0 respectively.
//////
DirectionSpecificStreamParameters DirectionSpecificStreamParameters::null()
{
DirectionSpecificStreamParameters tmp;
tmp.paStreamParameters_.device = paNoDevice;
tmp.paStreamParameters_.channelCount = 0;
return tmp;
}
// -----------------------------------------------------------------------------------
//////
/// Default constructor -- all parameters will be uninitialized.
//////
DirectionSpecificStreamParameters::DirectionSpecificStreamParameters()
{
}
//////
/// Constructor which sets all required fields.
//////
DirectionSpecificStreamParameters::DirectionSpecificStreamParameters(const Device &device, int numChannels,
SampleDataFormat format, bool interleaved, PaTime suggestedLatency, void *hostApiSpecificStreamInfo)
{
setDevice(device);
setNumChannels(numChannels);
setSampleFormat(format, interleaved);
setSuggestedLatency(suggestedLatency);
setHostApiSpecificStreamInfo(hostApiSpecificStreamInfo);
}
// -----------------------------------------------------------------------------------
void DirectionSpecificStreamParameters::setDevice(const Device &device)
{
paStreamParameters_.device = device.index();
}
void DirectionSpecificStreamParameters::setNumChannels(int numChannels)
{
paStreamParameters_.channelCount = numChannels;
}
void DirectionSpecificStreamParameters::setSampleFormat(SampleDataFormat format, bool interleaved)
{
paStreamParameters_.sampleFormat = static_cast<PaSampleFormat>(format);
if (!interleaved)
paStreamParameters_.sampleFormat |= paNonInterleaved;
}
void DirectionSpecificStreamParameters::setHostApiSpecificSampleFormat(PaSampleFormat format, bool interleaved)
{
paStreamParameters_.sampleFormat = format;
paStreamParameters_.sampleFormat |= paCustomFormat;
if (!interleaved)
paStreamParameters_.sampleFormat |= paNonInterleaved;
}
void DirectionSpecificStreamParameters::setSuggestedLatency(PaTime latency)
{
paStreamParameters_.suggestedLatency = latency;
}
void DirectionSpecificStreamParameters::setHostApiSpecificStreamInfo(void *streamInfo)
{
paStreamParameters_.hostApiSpecificStreamInfo = streamInfo;
}
// -----------------------------------------------------------------------------------
PaStreamParameters *DirectionSpecificStreamParameters::paStreamParameters()
{
if (paStreamParameters_.channelCount > 0 && paStreamParameters_.device != paNoDevice)
return &paStreamParameters_;
else
return NULL;
}
const PaStreamParameters *DirectionSpecificStreamParameters::paStreamParameters() const
{
if (paStreamParameters_.channelCount > 0 && paStreamParameters_.device != paNoDevice)
return &paStreamParameters_;
else
return NULL;
}
Device &DirectionSpecificStreamParameters::device() const
{
return System::instance().deviceByIndex(paStreamParameters_.device);
}
int DirectionSpecificStreamParameters::numChannels() const
{
return paStreamParameters_.channelCount;
}
//////
/// Returns the (non host api-specific) sample format, without including
/// the paNonInterleaved flag. If the sample format is host api-spefific,
/// INVALID_FORMAT (0) will be returned.
//////
SampleDataFormat DirectionSpecificStreamParameters::sampleFormat() const
{
if (isSampleFormatHostApiSpecific())
return INVALID_FORMAT;
else
return static_cast<SampleDataFormat>(paStreamParameters_.sampleFormat & ~paNonInterleaved);
}
bool DirectionSpecificStreamParameters::isSampleFormatInterleaved() const
{
return ((paStreamParameters_.sampleFormat & paNonInterleaved) == 0);
}
bool DirectionSpecificStreamParameters::isSampleFormatHostApiSpecific() const
{
return ((paStreamParameters_.sampleFormat & paCustomFormat) == 0);
}
//////
/// Returns the host api-specific sample format, without including any
/// paCustomFormat or paNonInterleaved flags. Will return 0 if the sample format is
/// not host api-specific.
//////
PaSampleFormat DirectionSpecificStreamParameters::hostApiSpecificSampleFormat() const
{
if (isSampleFormatHostApiSpecific())
return paStreamParameters_.sampleFormat & ~paCustomFormat & ~paNonInterleaved;
else
return 0;
}
PaTime DirectionSpecificStreamParameters::suggestedLatency() const
{
return paStreamParameters_.suggestedLatency;
}
void *DirectionSpecificStreamParameters::hostApiSpecificStreamInfo() const
{
return paStreamParameters_.hostApiSpecificStreamInfo;
}
// -----------------------------------------------------------------------------------
} // namespace portaudio
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