/**************************************************************************/
/*  lightmap_denoiser.cpp                                                 */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
/*                                                                        */
/* 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 "lightmap_denoiser.h"
#include "denoise_wrapper.h"

#include "core/io/image.h"

LightmapDenoiser *LightmapDenoiserOIDN::create_oidn_denoiser() {
	return memnew(LightmapDenoiserOIDN);
}

void LightmapDenoiserOIDN::make_default_denoiser() {
	create_function = create_oidn_denoiser;
}

Ref<Image> LightmapDenoiserOIDN::denoise_image(const Ref<Image> &p_image) {
	Ref<Image> img = p_image->duplicate();

	img->convert(Image::FORMAT_RGBF);

	Vector<uint8_t> data = img->get_data();
	if (!oidn_denoise(device, (float *)data.ptrw(), img->get_width(), img->get_height())) {
		return p_image;
	}

	img->set_data(img->get_width(), img->get_height(), false, img->get_format(), data);
	return img;
}

LightmapDenoiserOIDN::LightmapDenoiserOIDN() {
	device = oidn_denoiser_init();
}

LightmapDenoiserOIDN::~LightmapDenoiserOIDN() {
	oidn_denoiser_finish(device);
}