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