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

#include "core/io/file_access.h"
#include "scene/resources/image_texture.h"

Ref<Resource> ResourceFormatDDS::load(const String &p_path, const String &p_original_path, Error *r_error, bool p_use_sub_threads, float *r_progress, CacheMode p_cache_mode) {
	if (r_error) {
		*r_error = ERR_CANT_OPEN;
	}

	Error err;
	Ref<FileAccess> f = FileAccess::open(p_path, FileAccess::READ, &err);
	if (f.is_null()) {
		return Ref<Resource>();
	}

	Ref<FileAccess> fref(f);
	if (r_error) {
		*r_error = ERR_FILE_CORRUPT;
	}

	ERR_FAIL_COND_V_MSG(err != OK, Ref<Resource>(), "Unable to open DDS texture file '" + p_path + "'.");

	Ref<Image> img = memnew(Image);
	Error i_error = ImageLoaderDDS().load_image(img, f, false, 1.0);
	if (r_error) {
		*r_error = i_error;
	}

	Ref<ImageTexture> texture = ImageTexture::create_from_image(img);

	if (r_error) {
		*r_error = OK;
	}

	return texture;
}

void ResourceFormatDDS::get_recognized_extensions(List<String> *p_extensions) const {
	p_extensions->push_back("dds");
}

bool ResourceFormatDDS::handles_type(const String &p_type) const {
	return ClassDB::is_parent_class(p_type, "Texture2D");
}

String ResourceFormatDDS::get_resource_type(const String &p_path) const {
	if (p_path.get_extension().to_lower() == "dds") {
		return "ImageTexture";
	}
	return "";
}