Chris@39: #include "portaudiocpp/System.hxx"
Chris@39: 
Chris@39: #include <cstddef>
Chris@39: #include <cassert>
Chris@39: 
Chris@39: #include "portaudiocpp/HostApi.hxx"
Chris@39: #include "portaudiocpp/Device.hxx"
Chris@39: #include "portaudiocpp/Stream.hxx"
Chris@39: #include "portaudiocpp/Exception.hxx"
Chris@39: #include "portaudiocpp/SystemHostApiIterator.hxx"
Chris@39: #include "portaudiocpp/SystemDeviceIterator.hxx"
Chris@39: 
Chris@39: namespace portaudio
Chris@39: {
Chris@39: 	// -----------------------------------------------------------------------------------
Chris@39: 
Chris@39: 	// Static members:
Chris@39: 	System *System::instance_ = NULL;
Chris@39: 	int System::initCount_ = 0;
Chris@39: 	HostApi **System::hostApis_ = NULL;
Chris@39: 	Device **System::devices_ = NULL;
Chris@39: 	Device *System::nullDevice_ = NULL;
Chris@39: 
Chris@39: 	// -----------------------------------------------------------------------------------
Chris@39: 
Chris@39: 	int System::version()
Chris@39: 	{
Chris@39: 		return Pa_GetVersion();
Chris@39: 	}
Chris@39: 
Chris@39: 	const char *System::versionText()
Chris@39: 	{
Chris@39: 		return Pa_GetVersionText();
Chris@39: 	}
Chris@39: 
Chris@39: 	void System::initialize()
Chris@39: 	{
Chris@39: 		++initCount_;
Chris@39: 
Chris@39: 		if (initCount_ == 1)
Chris@39: 		{
Chris@39: 			// Create singleton:
Chris@39: 			assert(instance_ == NULL);
Chris@39: 			instance_ = new System();
Chris@39: 
Chris@39: 			// Initialize the PortAudio system:
Chris@39: 			{
Chris@39: 				PaError err = Pa_Initialize();
Chris@39: 
Chris@39: 				if (err != paNoError)
Chris@39: 					throw PaException(err);
Chris@39: 			}
Chris@39: 
Chris@39: 			// Create and populate device array:
Chris@39: 			{
Chris@39: 				int numDevices = instance().deviceCount();
Chris@39: 
Chris@39: 				devices_ = new Device*[numDevices];
Chris@39: 
Chris@39: 				for (int i = 0; i < numDevices; ++i)
Chris@39: 					devices_[i] = new Device(i);
Chris@39: 			}
Chris@39: 
Chris@39: 			// Create and populate host api array:
Chris@39: 			{
Chris@39: 				int numHostApis = instance().hostApiCount();
Chris@39: 
Chris@39: 				hostApis_ = new HostApi*[numHostApis];
Chris@39: 
Chris@39: 				for (int i = 0; i < numHostApis; ++i)
Chris@39: 					hostApis_[i] = new HostApi(i);
Chris@39: 			}
Chris@39: 			
Chris@39: 			// Create null device:
Chris@39: 			nullDevice_ = new Device(paNoDevice);
Chris@39: 		}
Chris@39: 	}
Chris@39: 
Chris@39: 	void System::terminate()
Chris@39: 	{
Chris@39: 		PaError err = paNoError;
Chris@39: 
Chris@39: 		if (initCount_ == 1)
Chris@39: 		{
Chris@39: 			// Destroy null device:
Chris@39: 			delete nullDevice_;
Chris@39: 
Chris@39: 			// Destroy host api array:
Chris@39: 			{
Chris@39: 				if (hostApis_ != NULL)
Chris@39: 				{
Chris@39: 					int numHostApis = instance().hostApiCount();
Chris@39: 
Chris@39: 					for (int i = 0; i < numHostApis; ++i)
Chris@39: 						delete hostApis_[i];
Chris@39: 
Chris@39: 					delete[] hostApis_;
Chris@39: 					hostApis_ = NULL;
Chris@39: 				}
Chris@39: 			}
Chris@39: 
Chris@39: 			// Destroy device array:
Chris@39: 			{
Chris@39: 				if (devices_ != NULL)
Chris@39: 				{
Chris@39: 					int numDevices = instance().deviceCount();
Chris@39: 
Chris@39: 					for (int i = 0; i < numDevices; ++i)
Chris@39: 						delete devices_[i];
Chris@39: 
Chris@39: 					delete[] devices_;
Chris@39: 					devices_ = NULL;
Chris@39: 				}
Chris@39: 			}
Chris@39: 
Chris@39: 			// Terminate the PortAudio system:
Chris@39: 			assert(instance_ != NULL);
Chris@39: 			err = Pa_Terminate();
Chris@39: 
Chris@39: 			// Destroy singleton:
Chris@39: 			delete instance_;
Chris@39: 			instance_ = NULL;
Chris@39: 		}
Chris@39: 
Chris@39: 		if (initCount_ > 0)
Chris@39: 			--initCount_;
Chris@39: 
Chris@39: 		if (err != paNoError)
Chris@39: 			throw PaException(err);
Chris@39: 	}
Chris@39: 
Chris@39: 
Chris@39: 	System &System::instance()
Chris@39: 	{
Chris@39: 		assert(exists());
Chris@39: 
Chris@39: 		return *instance_;
Chris@39: 	}
Chris@39: 
Chris@39: 	bool System::exists()
Chris@39: 	{
Chris@39: 		return (instance_ != NULL);
Chris@39: 	}
Chris@39: 
Chris@39: 	// -----------------------------------------------------------------------------------
Chris@39: 
Chris@39: 	System::HostApiIterator System::hostApisBegin()
Chris@39: 	{
Chris@39: 		System::HostApiIterator tmp;
Chris@39: 		tmp.ptr_ = &hostApis_[0]; // begin (first element)
Chris@39: 		return tmp;
Chris@39: 	}
Chris@39: 
Chris@39: 	System::HostApiIterator System::hostApisEnd()
Chris@39: 	{
Chris@39: 		int count = hostApiCount();
Chris@39: 
Chris@39: 		System::HostApiIterator tmp;
Chris@39: 		tmp.ptr_ = &hostApis_[count]; // end (one past last element)
Chris@39: 		return tmp;
Chris@39: 	}
Chris@39: 
Chris@39: 	HostApi &System::defaultHostApi()
Chris@39: 	{
Chris@39: 		PaHostApiIndex defaultHostApi = Pa_GetDefaultHostApi();
Chris@39: 
Chris@39: 		if (defaultHostApi < 0)
Chris@39: 			throw PaException(defaultHostApi);
Chris@39: 
Chris@39: 		return *hostApis_[defaultHostApi];
Chris@39: 	}
Chris@39: 
Chris@39: 	HostApi &System::hostApiByTypeId(PaHostApiTypeId type)
Chris@39: 	{
Chris@39: 		PaHostApiIndex index = Pa_HostApiTypeIdToHostApiIndex(type);
Chris@39: 
Chris@39: 		if (index < 0)
Chris@39: 			throw PaException(index);
Chris@39: 
Chris@39: 		return *hostApis_[index];
Chris@39: 	}
Chris@39: 
Chris@39: 	HostApi &System::hostApiByIndex(PaHostApiIndex index)
Chris@39: 	{
Chris@39: 		if (index < 0 || index >= hostApiCount())
Chris@39: 			throw PaException(paInternalError);
Chris@39: 
Chris@39: 		return *hostApis_[index];
Chris@39: 	}
Chris@39: 
Chris@39: 	int System::hostApiCount()
Chris@39: 	{
Chris@39: 		PaHostApiIndex count = Pa_GetHostApiCount();
Chris@39: 
Chris@39: 		if (count < 0)
Chris@39: 			throw PaException(count);
Chris@39: 
Chris@39: 		return count;
Chris@39: 	}
Chris@39: 
Chris@39: 	// -----------------------------------------------------------------------------------
Chris@39: 
Chris@39: 	System::DeviceIterator System::devicesBegin()
Chris@39: 	{
Chris@39: 		DeviceIterator tmp;
Chris@39: 		tmp.ptr_ = &devices_[0];
Chris@39: 
Chris@39: 		return tmp;
Chris@39: 	}
Chris@39: 
Chris@39: 	System::DeviceIterator System::devicesEnd()
Chris@39: 	{
Chris@39: 		int count = deviceCount();
Chris@39: 
Chris@39: 		DeviceIterator tmp;
Chris@39: 		tmp.ptr_ = &devices_[count];
Chris@39: 
Chris@39: 		return tmp;
Chris@39: 	}
Chris@39: 
Chris@39: 	//////
Chris@39: 	/// Returns the System's default input Device, or the null Device if none 
Chris@39: 	/// was available.
Chris@39: 	//////
Chris@39: 	Device &System::defaultInputDevice()
Chris@39: 	{
Chris@39: 		PaDeviceIndex index = Pa_GetDefaultInputDevice();
Chris@39: 		return deviceByIndex(index);
Chris@39: 	}
Chris@39: 
Chris@39: 	//////
Chris@39: 	/// Returns the System's default output Device, or the null Device if none 
Chris@39: 	/// was available.
Chris@39: 	//////
Chris@39: 	Device &System::defaultOutputDevice()
Chris@39: 	{
Chris@39: 		PaDeviceIndex index = Pa_GetDefaultOutputDevice();
Chris@39: 		return deviceByIndex(index);
Chris@39: 	}
Chris@39: 
Chris@39: 	//////
Chris@39: 	/// Returns the Device for the given index.
Chris@39: 	/// Will throw a paInternalError equivalent PaException if the given index 
Chris@39: 	/// is out of range.
Chris@39: 	//////
Chris@39: 	Device &System::deviceByIndex(PaDeviceIndex index)
Chris@39: 	{
Chris@39: 		if (index < -1 || index >= deviceCount())
Chris@39: 		{
Chris@39: 			throw PaException(paInternalError);
Chris@39: 		}
Chris@39: 
Chris@39: 		if (index == -1)
Chris@39: 			return System::instance().nullDevice();
Chris@39: 
Chris@39: 		return *devices_[index];
Chris@39: 	}
Chris@39: 
Chris@39: 	int System::deviceCount()
Chris@39: 	{
Chris@39: 		PaDeviceIndex count = Pa_GetDeviceCount();
Chris@39: 
Chris@39: 		if (count < 0)
Chris@39: 			throw PaException(count);
Chris@39: 
Chris@39: 		return count;
Chris@39: 	}
Chris@39: 
Chris@39: 	Device &System::nullDevice()
Chris@39: 	{
Chris@39: 		return *nullDevice_;
Chris@39: 	}
Chris@39: 
Chris@39: 	// -----------------------------------------------------------------------------------
Chris@39: 
Chris@39: 	void System::sleep(long msec)
Chris@39: 	{
Chris@39: 		Pa_Sleep(msec);
Chris@39: 	}
Chris@39: 
Chris@39: 	int System::sizeOfSample(PaSampleFormat format)
Chris@39: 	{
Chris@39: 		PaError err = Pa_GetSampleSize(format);
Chris@39: 		if (err < 0)
Chris@39: 		{
Chris@39: 			throw PaException(err);
Chris@39: 			return 0;
Chris@39: 		}
Chris@39: 
Chris@39: 		return err;
Chris@39: 	}
Chris@39: 
Chris@39: 	// -----------------------------------------------------------------------------------
Chris@39: 
Chris@39: 	System::System()
Chris@39: 	{
Chris@39: 		// (left blank intentionally)
Chris@39: 	}
Chris@39: 
Chris@39: 	System::~System()
Chris@39: 	{
Chris@39: 		// (left blank intentionally)
Chris@39: 	}
Chris@39: 
Chris@39: 	// -----------------------------------------------------------------------------------
Chris@39: 
Chris@39: } // namespace portaudio
Chris@39: