nuclear@1: #include <stdio.h>
nuclear@1: #include "vr.h"
nuclear@1: #include "vr_impl.h"
nuclear@1: 
nuclear@1: static bool init_ovr();
nuclear@1: 
nuclear@3: VRContext vr_ctx;
nuclear@1: 
nuclear@1: extern "C" int vr_init(enum vr_init_mode mode)
nuclear@1: {
nuclear@1: 	if(!init_ovr()) {
nuclear@1: 		return -1;
nuclear@1: 	}
nuclear@1: 	return 0;
nuclear@1: }
nuclear@1: 
nuclear@1: extern "C" void vr_shutdown(void)
nuclear@1: {
nuclear@3: 	//System::Destroy();
nuclear@1: }
nuclear@1: 
nuclear@1: static bool init_ovr()
nuclear@1: {
nuclear@5: 	LogMaskConstants log_level;
nuclear@1: 	// initialize Oculus SDK
nuclear@5: 	const char *logenv = getenv("VR_LOGLEVEL");
nuclear@5: 	if(logenv) {
nuclear@5: 		switch(atoi(logenv)) {
nuclear@5: 		case 0:
nuclear@5: 			log_level = LogMask_None;
nuclear@5: 			break;
nuclear@5: 		case 1:
nuclear@5: 			log_level = LogMask_Regular;
nuclear@5: 			break;
nuclear@5: 		case 2:
nuclear@5: 		default:
nuclear@5: 			log_level = LogMask_All;
nuclear@5: 			break;
nuclear@5: 		}
nuclear@5: 	}
nuclear@5: 
nuclear@5: 	System::Init(Log::ConfigureDefaultLog(log_level));
nuclear@3: 	if(!(vr_ctx.ovr_devman = DeviceManager::Create())) {
nuclear@1: 		fprintf(stderr, "failed to create OVR device manager\n");
nuclear@1: 		return false;
nuclear@1: 	}
nuclear@1: 
nuclear@1: 	// create the display device
nuclear@4: 	HMDInfo info;
nuclear@3: 	if(!(vr_ctx.ovr_hmd_dev = vr_ctx.ovr_devman->EnumerateDevices<HMDDevice>().CreateDevice())) {
nuclear@1: 		fprintf(stderr, "no oculus rift devices found\n");
nuclear@4: 	} else {
nuclear@4: 		if(vr_ctx.ovr_hmd_dev->GetDeviceInfo(&info)) {
nuclear@4: 			printf("oculus device info:\n");
nuclear@4: 			printf("  name: %s\n", info.DisplayDeviceName);
nuclear@4: 			printf("  ipd: %f\n", info.InterpupillaryDistance);
nuclear@4: 			printf("  distortion: %f %f %f %f\n", info.DistortionK[0],
nuclear@4: 					info.DistortionK[1], info.DistortionK[2], info.DistortionK[3]);
nuclear@4: 		}
nuclear@1: 
nuclear@4: 		// calculate and store viewing parameters
nuclear@4: 		float vhalfsz = info.VScreenSize * 0.5;
nuclear@4: 		vr_ctx.info.fov = 2.0 * atan(vhalfsz / info.EyeToScreenDistance);
nuclear@4: 
nuclear@4: 		vr_ctx.info.width = info.HResolution;
nuclear@4: 		vr_ctx.info.height = info.VResolution;
nuclear@4: 		vr_ctx.info.aspect = (float)vr_ctx.info.width / (float)vr_ctx.info.height;
nuclear@4: 
nuclear@4: 		vr_ctx.info.ipd = info.InterpupillaryDistance;
nuclear@4: 		for(int i=0; i<4; i++) {
nuclear@4: 			vr_ctx.info.distort[i] = info.DistortionK[i];
nuclear@4: 		}
nuclear@1: 	}
nuclear@1: 
nuclear@1: 	// get the sensor device
nuclear@4: 	if(vr_ctx.ovr_hmd_dev) {
nuclear@4: 		if(!(vr_ctx.ovr_sensor_dev = vr_ctx.ovr_hmd_dev->GetSensor())) {
nuclear@4: 			fprintf(stderr, "failed to get oculus sensor device\n");
nuclear@4: 		}
nuclear@4: 	} else {
nuclear@4: 		if(!(vr_ctx.ovr_sensor_dev = vr_ctx.ovr_devman->EnumerateDevices<SensorDevice>().CreateDevice())) {
nuclear@4: 			fprintf(stderr, "failed to get oculus sensor device\n");
nuclear@4: 		}
nuclear@1: 	}
nuclear@1: 
nuclear@4: 	if(vr_ctx.ovr_sensor_dev) {
nuclear@4: 		SensorInfo sinfo;
nuclear@4: 		if(vr_ctx.ovr_sensor_dev->GetDeviceInfo(&sinfo)) {
nuclear@4: 			printf("oculus sensor device info:\n");
nuclear@4: 			printf("  name: %s\n", sinfo.ProductName);
nuclear@4: 		}
nuclear@4: 
nuclear@4: 		vr_ctx.ovr_sfusion.AttachToSensor(vr_ctx.ovr_sensor_dev);
nuclear@1: 	}
nuclear@1: 	return true;
nuclear@1: }
nuclear@3: 
nuclear@3: extern "C" int vr_get_width(void)
nuclear@3: {
nuclear@3: 	return vr_ctx.info.width;
nuclear@3: }
nuclear@3: 
nuclear@3: extern "C" int vr_get_height(void)
nuclear@3: {
nuclear@3: 	return vr_ctx.info.height;
nuclear@3: }
nuclear@3: 
nuclear@3: extern "C" float vr_get_fov(void)
nuclear@3: {
nuclear@3: 	return vr_ctx.info.fov;
nuclear@3: }
nuclear@3: 
nuclear@3: extern "C" float vr_get_aspect(void)
nuclear@3: {
nuclear@3: 	return vr_ctx.info.aspect;
nuclear@3: }
nuclear@3: 
nuclear@3: extern "C" void vr_set_eyedist(float ipd)
nuclear@3: {
nuclear@3: 	vr_ctx.info.ipd = ipd;
nuclear@3: }
nuclear@3: 
nuclear@3: extern "C" float vr_get_eyedist(void)
nuclear@3: {
nuclear@3: 	return vr_ctx.info.ipd;
nuclear@3: }
nuclear@3: 
nuclear@3: extern "C" void vr_set_distort(const float *coef)
nuclear@3: {
nuclear@3: 	memcpy(vr_ctx.info.distort, coef, sizeof vr_ctx.info.distort);
nuclear@3: }
nuclear@3: 
nuclear@3: extern "C" void vr_get_distort(float *coef)
nuclear@3: {
nuclear@3: 	memcpy(coef, vr_ctx.info.distort, sizeof vr_ctx.info.distort);
nuclear@3: }
nuclear@3: 
nuclear@3: extern "C" void vr_set_prediction_sec(float dt)
nuclear@3: {
nuclear@3: 	vr_ctx.ovr_sfusion.SetPrediction(dt);
nuclear@3: }
nuclear@3: 
nuclear@3: extern "C" float vr_get_prediction_sec(void)
nuclear@3: {
nuclear@3: 	return vr_ctx.ovr_sfusion.GetPredictionDelta();
nuclear@3: }
nuclear@3: 
nuclear@3: extern "C" void vr_get_translation(float *offs)
nuclear@3: {
nuclear@3: 	// current oculus devkit doesn't do translation
nuclear@3: 	offs[0] = offs[1] = offs[2] = 0.0f;
nuclear@3: }
nuclear@3: 
nuclear@3: extern "C" void vr_get_rotation(float *quat)
nuclear@3: {
nuclear@3: 	Quatf oq = vr_ctx.ovr_sfusion.GetPredictedOrientation();
nuclear@3: 	quat[0] = oq.x;
nuclear@3: 	quat[1] = oq.y;
nuclear@3: 	quat[2] = oq.z;
nuclear@3: 	quat[3] = oq.w;
nuclear@3: }
nuclear@3: 
nuclear@3: extern "C" void vr_get_rotation_euler(float *euler)
nuclear@3: {
nuclear@3: 	Quatf oq = vr_ctx.ovr_sfusion.GetPredictedOrientation();
nuclear@3: 	oq.GetEulerAngles<Axis_Y, Axis_X, Axis_Z>(euler + 1, euler, euler + 2);
nuclear@3: }