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/*************************************************************************/
/* image_loader.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2022 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 "image_loader.h"
#include "core/string/print_string.h"
bool ImageFormatLoader::recognize(const String &p_extension) const {
List<String> extensions;
get_recognized_extensions(&extensions);
for (const String &E : extensions) {
if (E.nocasecmp_to(p_extension) == 0) {
return true;
}
}
return false;
}
Error ImageLoader::load_image(String p_file, Ref<Image> p_image, Ref<FileAccess> p_custom, bool p_force_linear, float p_scale) {
ERR_FAIL_COND_V_MSG(p_image.is_null(), ERR_INVALID_PARAMETER, "It's not a reference to a valid Image object.");
Ref<FileAccess> f = p_custom;
if (f.is_null()) {
Error err;
f = FileAccess::open(p_file, FileAccess::READ, &err);
ERR_FAIL_COND_V_MSG(f.is_null(), err, "Error opening file '" + p_file + "'.");
}
String extension = p_file.get_extension();
for (int i = 0; i < loader.size(); i++) {
if (!loader[i]->recognize(extension)) {
continue;
}
Error err = loader[i]->load_image(p_image, f, p_force_linear, p_scale);
if (err != OK) {
ERR_PRINT("Error loading image: " + p_file);
}
if (err != ERR_FILE_UNRECOGNIZED) {
return err;
}
}
return ERR_FILE_UNRECOGNIZED;
}
void ImageLoader::get_recognized_extensions(List<String> *p_extensions) {
for (int i = 0; i < loader.size(); i++) {
loader[i]->get_recognized_extensions(p_extensions);
}
}
ImageFormatLoader *ImageLoader::recognize(const String &p_extension) {
for (int i = 0; i < loader.size(); i++) {
if (loader[i]->recognize(p_extension)) {
return loader[i];
}
}
return nullptr;
}
Vector<ImageFormatLoader *> ImageLoader::loader;
void ImageLoader::add_image_format_loader(ImageFormatLoader *p_loader) {
loader.push_back(p_loader);
}
void ImageLoader::remove_image_format_loader(ImageFormatLoader *p_loader) {
loader.erase(p_loader);
}
const Vector<ImageFormatLoader *> &ImageLoader::get_image_format_loaders() {
return loader;
}
void ImageLoader::cleanup() {
while (loader.size()) {
remove_image_format_loader(loader[0]);
}
}
/////////////////
RES ResourceFormatLoaderImage::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) {
Ref<FileAccess> f = FileAccess::open(p_path, FileAccess::READ);
if (f.is_null()) {
if (r_error) {
*r_error = ERR_CANT_OPEN;
}
return RES();
}
uint8_t header[4] = { 0, 0, 0, 0 };
f->get_buffer(header, 4);
bool unrecognized = header[0] != 'G' || header[1] != 'D' || header[2] != 'I' || header[3] != 'M';
if (unrecognized) {
if (r_error) {
*r_error = ERR_FILE_UNRECOGNIZED;
}
ERR_FAIL_V(RES());
}
String extension = f->get_pascal_string();
int idx = -1;
for (int i = 0; i < ImageLoader::loader.size(); i++) {
if (ImageLoader::loader[i]->recognize(extension)) {
idx = i;
break;
}
}
if (idx == -1) {
if (r_error) {
*r_error = ERR_FILE_UNRECOGNIZED;
}
ERR_FAIL_V(RES());
}
Ref<Image> image;
image.instantiate();
Error err = ImageLoader::loader[idx]->load_image(image, f, false, 1.0);
if (err != OK) {
if (r_error) {
*r_error = err;
}
return RES();
}
if (r_error) {
*r_error = OK;
}
return image;
}
void ResourceFormatLoaderImage::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("image");
}
bool ResourceFormatLoaderImage::handles_type(const String &p_type) const {
return p_type == "Image";
}
String ResourceFormatLoaderImage::get_resource_type(const String &p_path) const {
return p_path.get_extension().to_lower() == "image" ? "Image" : String();
}
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