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122 lines
2.6 KiB
C++
122 lines
2.6 KiB
C++
#include "portaudiocpp/HostApi.hxx"
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#include "portaudiocpp/System.hxx"
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#include "portaudiocpp/Device.hxx"
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#include "portaudiocpp/SystemDeviceIterator.hxx"
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#include "portaudiocpp/Exception.hxx"
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namespace portaudio
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{
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// -----------------------------------------------------------------------------------
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HostApi::HostApi(PaHostApiIndex index) : devices_(NULL)
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{
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try
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{
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info_ = Pa_GetHostApiInfo(index);
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// Create and populate devices array:
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int numDevices = deviceCount();
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devices_ = new Device*[numDevices];
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for (int i = 0; i < numDevices; ++i)
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{
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PaDeviceIndex deviceIndex = Pa_HostApiDeviceIndexToDeviceIndex(index, i);
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if (deviceIndex < 0)
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{
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throw PaException(deviceIndex);
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}
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devices_[i] = &System::instance().deviceByIndex(deviceIndex);
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}
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}
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catch (const std::exception &e)
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{
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// Delete any (partially) constructed objects (deconstructor isn't called):
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delete[] devices_; // devices_ is either NULL or valid
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// Re-throw exception:
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throw e;
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}
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}
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HostApi::~HostApi()
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{
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// Destroy devices array:
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delete[] devices_;
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}
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// -----------------------------------------------------------------------------------
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PaHostApiTypeId HostApi::typeId() const
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{
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return info_->type;
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}
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PaHostApiIndex HostApi::index() const
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{
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PaHostApiIndex index = Pa_HostApiTypeIdToHostApiIndex(typeId());
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if (index < 0)
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throw PaException(index);
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return index;
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}
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const char *HostApi::name() const
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{
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return info_->name;
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}
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int HostApi::deviceCount() const
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{
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return info_->deviceCount;
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}
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// -----------------------------------------------------------------------------------
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HostApi::DeviceIterator HostApi::devicesBegin()
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{
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DeviceIterator tmp;
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tmp.ptr_ = &devices_[0]; // begin (first element)
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return tmp;
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}
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HostApi::DeviceIterator HostApi::devicesEnd()
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{
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DeviceIterator tmp;
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tmp.ptr_ = &devices_[deviceCount()]; // end (one past last element)
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return tmp;
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}
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// -----------------------------------------------------------------------------------
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Device &HostApi::defaultInputDevice() const
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{
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return System::instance().deviceByIndex(info_->defaultInputDevice);
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}
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Device &HostApi::defaultOutputDevice() const
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{
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return System::instance().deviceByIndex(info_->defaultOutputDevice);
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}
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// -----------------------------------------------------------------------------------
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bool HostApi::operator==(const HostApi &rhs) const
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{
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return (typeId() == rhs.typeId());
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}
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bool HostApi::operator!=(const HostApi &rhs) const
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{
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return !(*this == rhs);
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}
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// -----------------------------------------------------------------------------------
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} // namespace portaudio
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