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/*************************************************************************/
/*  denoise_wrapper.cpp                                                  */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md).   */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#include "denoise_wrapper.h"
#include "thirdparty/oidn/include/OpenImageDenoise/oidn.h"
#include <stdio.h>

void *oidn_denoiser_init() {
	OIDNDeviceImpl *device = oidnNewDevice(OIDN_DEVICE_TYPE_CPU);
	oidnCommitDevice(device);
	return device;
}

bool oidn_denoise(void *deviceptr, float *p_floats, int p_width, int p_height) {
	OIDNDeviceImpl *device = (OIDNDeviceImpl *)deviceptr;
	OIDNFilter filter = oidnNewFilter(device, "RTLightmap");
	oidnSetSharedFilterImage(filter, "color", (void *)p_floats, OIDN_FORMAT_FLOAT3, p_width, p_height, 0, 0, 0);
	oidnSetSharedFilterImage(filter, "output", (void *)p_floats, OIDN_FORMAT_FLOAT3, p_width, p_height, 0, 0, 0);
	oidnSetFilter1b(filter, "hdr", true);
	//oidnSetFilter1f(filter, "hdrScale", 1.0f);
	oidnCommitFilter(filter);
	oidnExecuteFilter(filter);

	const char *msg;
	bool success = true;
	if (oidnGetDeviceError(device, &msg) != OIDN_ERROR_NONE) {
		printf("LightmapDenoiser: %s\n", msg);
		success = false;
	}

	oidnReleaseFilter(filter);
	return success;
}

void oidn_denoiser_finish(void *device) {
	oidnReleaseDevice((OIDNDeviceImpl *)device);
}