From 37c97e345d12f95dde44e1d1a4c2f2aadd4615bc Mon Sep 17 00:00:00 2001
From: sanine <sanine.not@pm.me>
Date: Thu, 25 Aug 2022 14:54:53 -0500
Subject: add initial structure

---
 .../bindings/cpp/source/portaudiocpp/System.cxx    | 308 +++++++++++++++++++++
 1 file changed, 308 insertions(+)
 create mode 100644 portaudio/bindings/cpp/source/portaudiocpp/System.cxx

(limited to 'portaudio/bindings/cpp/source/portaudiocpp/System.cxx')

diff --git a/portaudio/bindings/cpp/source/portaudiocpp/System.cxx b/portaudio/bindings/cpp/source/portaudiocpp/System.cxx
new file mode 100644
index 0000000..acb419d
--- /dev/null
+++ b/portaudio/bindings/cpp/source/portaudiocpp/System.cxx
@@ -0,0 +1,308 @@
+#include "portaudiocpp/System.hxx"
+
+#include <cstddef>
+#include <cassert>
+
+#include "portaudiocpp/HostApi.hxx"
+#include "portaudiocpp/Device.hxx"
+#include "portaudiocpp/Stream.hxx"
+#include "portaudiocpp/Exception.hxx"
+#include "portaudiocpp/SystemHostApiIterator.hxx"
+#include "portaudiocpp/SystemDeviceIterator.hxx"
+
+namespace portaudio
+{
+	// -----------------------------------------------------------------------------------
+
+	// Static members:
+	System *System::instance_ = NULL;
+	int System::initCount_ = 0;
+	HostApi **System::hostApis_ = NULL;
+	Device **System::devices_ = NULL;
+	Device *System::nullDevice_ = NULL;
+
+	// -----------------------------------------------------------------------------------
+
+	int System::version()
+	{
+		return Pa_GetVersion();
+	}
+
+	const char *System::versionText()
+	{
+		return Pa_GetVersionText();
+	}
+
+	void System::initialize()
+	{
+		++initCount_;
+
+		if (initCount_ == 1)
+		{
+			// Create singleton:
+			assert(instance_ == NULL);
+			instance_ = new System();
+
+			// Initialize the PortAudio system:
+			{
+				PaError err = Pa_Initialize();
+
+				if (err != paNoError)
+					throw PaException(err);
+			}
+
+			// Create and populate device array:
+			{
+				int numDevices = instance().deviceCount();
+
+				devices_ = new Device*[numDevices];
+
+				for (int i = 0; i < numDevices; ++i)
+					devices_[i] = new Device(i);
+			}
+
+			// Create and populate host api array:
+			{
+				int numHostApis = instance().hostApiCount();
+
+				hostApis_ = new HostApi*[numHostApis];
+
+				for (int i = 0; i < numHostApis; ++i)
+					hostApis_[i] = new HostApi(i);
+			}
+			
+			// Create null device:
+			nullDevice_ = new Device(paNoDevice);
+		}
+	}
+
+	void System::terminate()
+	{
+		PaError err = paNoError;
+
+		if (initCount_ == 1)
+		{
+			// Destroy null device:
+			delete nullDevice_;
+
+			// Destroy host api array:
+			{
+				if (hostApis_ != NULL)
+				{
+					int numHostApis = instance().hostApiCount();
+
+					for (int i = 0; i < numHostApis; ++i)
+						delete hostApis_[i];
+
+					delete[] hostApis_;
+					hostApis_ = NULL;
+				}
+			}
+
+			// Destroy device array:
+			{
+				if (devices_ != NULL)
+				{
+					int numDevices = instance().deviceCount();
+
+					for (int i = 0; i < numDevices; ++i)
+						delete devices_[i];
+
+					delete[] devices_;
+					devices_ = NULL;
+				}
+			}
+
+			// Terminate the PortAudio system:
+			assert(instance_ != NULL);
+			err = Pa_Terminate();
+
+			// Destroy singleton:
+			delete instance_;
+			instance_ = NULL;
+		}
+
+		if (initCount_ > 0)
+			--initCount_;
+
+		if (err != paNoError)
+			throw PaException(err);
+	}
+
+
+	System &System::instance()
+	{
+		assert(exists());
+
+		return *instance_;
+	}
+
+	bool System::exists()
+	{
+		return (instance_ != NULL);
+	}
+
+	// -----------------------------------------------------------------------------------
+
+	System::HostApiIterator System::hostApisBegin()
+	{
+		System::HostApiIterator tmp;
+		tmp.ptr_ = &hostApis_[0]; // begin (first element)
+		return tmp;
+	}
+
+	System::HostApiIterator System::hostApisEnd()
+	{
+		int count = hostApiCount();
+
+		System::HostApiIterator tmp;
+		tmp.ptr_ = &hostApis_[count]; // end (one past last element)
+		return tmp;
+	}
+
+	HostApi &System::defaultHostApi()
+	{
+		PaHostApiIndex defaultHostApi = Pa_GetDefaultHostApi();
+
+		if (defaultHostApi < 0)
+			throw PaException(defaultHostApi);
+
+		return *hostApis_[defaultHostApi];
+	}
+
+	HostApi &System::hostApiByTypeId(PaHostApiTypeId type)
+	{
+		PaHostApiIndex index = Pa_HostApiTypeIdToHostApiIndex(type);
+
+		if (index < 0)
+			throw PaException(index);
+
+		return *hostApis_[index];
+	}
+
+	HostApi &System::hostApiByIndex(PaHostApiIndex index)
+	{
+		if (index < 0 || index >= hostApiCount())
+			throw PaException(paInternalError);
+
+		return *hostApis_[index];
+	}
+
+	int System::hostApiCount()
+	{
+		PaHostApiIndex count = Pa_GetHostApiCount();
+
+		if (count < 0)
+			throw PaException(count);
+
+		return count;
+	}
+
+	// -----------------------------------------------------------------------------------
+
+	System::DeviceIterator System::devicesBegin()
+	{
+		DeviceIterator tmp;
+		tmp.ptr_ = &devices_[0];
+
+		return tmp;
+	}
+
+	System::DeviceIterator System::devicesEnd()
+	{
+		int count = deviceCount();
+
+		DeviceIterator tmp;
+		tmp.ptr_ = &devices_[count];
+
+		return tmp;
+	}
+
+	//////
+	/// Returns the System's default input Device, or the null Device if none 
+	/// was available.
+	//////
+	Device &System::defaultInputDevice()
+	{
+		PaDeviceIndex index = Pa_GetDefaultInputDevice();
+		return deviceByIndex(index);
+	}
+
+	//////
+	/// Returns the System's default output Device, or the null Device if none 
+	/// was available.
+	//////
+	Device &System::defaultOutputDevice()
+	{
+		PaDeviceIndex index = Pa_GetDefaultOutputDevice();
+		return deviceByIndex(index);
+	}
+
+	//////
+	/// Returns the Device for the given index.
+	/// Will throw a paInternalError equivalent PaException if the given index 
+	/// is out of range.
+	//////
+	Device &System::deviceByIndex(PaDeviceIndex index)
+	{
+		if (index < -1 || index >= deviceCount())
+		{
+			throw PaException(paInternalError);
+		}
+
+		if (index == -1)
+			return System::instance().nullDevice();
+
+		return *devices_[index];
+	}
+
+	int System::deviceCount()
+	{
+		PaDeviceIndex count = Pa_GetDeviceCount();
+
+		if (count < 0)
+			throw PaException(count);
+
+		return count;
+	}
+
+	Device &System::nullDevice()
+	{
+		return *nullDevice_;
+	}
+
+	// -----------------------------------------------------------------------------------
+
+	void System::sleep(long msec)
+	{
+		Pa_Sleep(msec);
+	}
+
+	int System::sizeOfSample(PaSampleFormat format)
+	{
+		PaError err = Pa_GetSampleSize(format);
+		if (err < 0)
+		{
+			throw PaException(err);
+			return 0;
+		}
+
+		return err;
+	}
+
+	// -----------------------------------------------------------------------------------
+
+	System::System()
+	{
+		// (left blank intentionally)
+	}
+
+	System::~System()
+	{
+		// (left blank intentionally)
+	}
+
+	// -----------------------------------------------------------------------------------
+
+} // namespace portaudio
+
-- 
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