ASIOドライバーの列挙・初期化・情報取得を行うUnityプラグイン。入出力は未実装。

Plugin.cpp

#include <asiosys.h>
#include <asio.h>
#include <asiodrivers.h>

#include "monoAPI.h"

#define UNITY_ASIO_MAX_DRIVERS 16

extern "C" __declspec(dllexport) MonoArray *UnityASIOEnumerateDrivers() {
	AsioDrivers *asioDrivers = new AsioDrivers();

	long numberOfDrivers;
	char driverNameBuffer[32 * UNITY_ASIO_MAX_DRIVERS];

	char *names[UNITY_ASIO_MAX_DRIVERS];
	for (int i = 0; i < UNITY_ASIO_MAX_DRIVERS; i++) {
		names[i] = driverNameBuffer + 32 * i;
	}

	numberOfDrivers = asioDrivers->getDriverNames(names, UNITY_ASIO_MAX_DRIVERS);

	MonoArray *monoArray = mono_array_new(mono_domain_get(), mono_get_string_class(), numberOfDrivers);
	for (int i = 0; i < numberOfDrivers; i++) {
		((MonoString **)monoArray->vector)[i] = mono_string_new(mono_domain_get(), &driverNameBuffer[32 * i]);
	}

	delete asioDrivers;

	return monoArray;
}

extern "C" __declspec(dllexport) void UnityASIOLoadDriver(char *driverName) {
	AsioDrivers *asioDrivers = new AsioDrivers();
	asioDrivers->loadDriver((char *)driverName);
}

extern "C" __declspec(dllexport) void UnityASIOInit() {
	ASIODriverInfo adi;
	memset(&adi, 0, sizeof(adi));
	adi.asioVersion = 0;
	adi.sysRef = GetForegroundWindow();
	
	ASIOInit(&adi);
}

extern "C" __declspec(dllexport) void UnityASIOGetChannels(long *numInputChannels, long *numOutputChannels) {
	ASIOGetChannels(numInputChannels, numOutputChannels);
}

extern "C" __declspec(dllexport) long UnityASIOCanSampleRate(double sampleRate) {
	return ASIOCanSampleRate(sampleRate)/* == ASE_OK*/;
}

extern "C" __declspec(dllexport) double UnityASIOGetSampleRate() {
	
	double sampleRate;

	ASIOError error;
	error = ASIOGetSampleRate(&sampleRate);

	return sampleRate;
}

extern "C" __declspec(dllexport) void UnityASIOControlPanel() {
	ASIOControlPanel();
}