godot/editor/import/resource_importer_image.cpp

/*************************************************************************/
/*  resource_importer_image.cpp                                          */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
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#include "resource_importer_image.h"

#include "core/io/file_access.h"
#include "core/io/image_loader.h"
#include "core/io/resource_saver.h"
#include "scene/resources/texture.h"

String ResourceImporterImage::get_importer_name() const {
	return "image";
}

String ResourceImporterImage::get_visible_name() const {
	return "Image";
}

void ResourceImporterImage::get_recognized_extensions(List<String> *p_extensions) const {
	ImageLoader::get_recognized_extensions(p_extensions);
}

String ResourceImporterImage::get_save_extension() const {
	return "image";
}

String ResourceImporterImage::get_resource_type() const {
	return "Image";
}

bool ResourceImporterImage::get_option_visibility(const String &p_option, const Map<StringName, Variant> &p_options) const {
	return true;
}

int ResourceImporterImage::get_preset_count() const {
	return 0;
}

String ResourceImporterImage::get_preset_name(int p_idx) const {
	return String();
}

void ResourceImporterImage::get_import_options(List<ImportOption> *r_options, int p_preset) const {
}

Error ResourceImporterImage::import(const String &p_source_file, const String &p_save_path, const Map<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files, Variant *r_metadata) {
	FileAccess *f = FileAccess::open(p_source_file, FileAccess::READ);

	ERR_FAIL_COND_V_MSG(!f, ERR_CANT_OPEN, "Cannot open file from path '" + p_source_file + "'.");

	uint64_t len = f->get_length();

	Vector<uint8_t> data;
	data.resize(len);

	f->get_buffer(data.ptrw(), len);

	memdelete(f);

	f = FileAccess::open(p_save_path + ".image", FileAccess::WRITE);
	ERR_FAIL_COND_V_MSG(!f, ERR_CANT_CREATE, "Cannot create file in path '" + p_save_path + ".image'.");

	//save the header GDIM
	const uint8_t header[4] = { 'G', 'D', 'I', 'M' };
	f->store_buffer(header, 4);
	//SAVE the extension (so it can be recognized by the loader later
	f->store_pascal_string(p_source_file.get_extension().to_lower());
	//SAVE the actual image
	f->store_buffer(data.ptr(), len);

	memdelete(f);

	return OK;
}

ResourceImporterImage::ResourceImporterImage() {
}