godot/modules/tga/image_loader_tga.h
bruvzg d86ccf8309 Fix loading RLE compressed TGA files.
Fix memory reads outside of input buffer when loading invalid TGA files.
2021-06-14 18:51:09 +03:00

85 lines
3.6 KiB
C++

/*************************************************************************/
/* image_loader_tga.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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, */
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/*************************************************************************/
#ifndef IMAGE_LOADER_TGA_H
#define IMAGE_LOADER_TGA_H
#include "core/io/image_loader.h"
/**
@author SaracenOne
*/
class ImageLoaderTGA : public ImageFormatLoader {
enum tga_type_e {
TGA_TYPE_NO_DATA = 0,
TGA_TYPE_INDEXED = 1,
TGA_TYPE_RGB = 2,
TGA_TYPE_MONOCHROME = 3,
TGA_TYPE_RLE_INDEXED = 9,
TGA_TYPE_RLE_RGB = 10,
TGA_TYPE_RLE_MONOCHROME = 11
};
enum tga_origin_e {
TGA_ORIGIN_BOTTOM_LEFT = 0x00,
TGA_ORIGIN_BOTTOM_RIGHT = 0x01,
TGA_ORIGIN_TOP_LEFT = 0x02,
TGA_ORIGIN_TOP_RIGHT = 0x03,
TGA_ORIGIN_SHIFT = 0x04,
TGA_ORIGIN_MASK = 0x30
};
struct tga_header_s {
uint8_t id_length;
uint8_t color_map_type;
tga_type_e image_type;
uint16_t first_color_entry;
uint16_t color_map_length;
uint8_t color_map_depth;
uint16_t x_origin;
uint16_t y_origin;
uint16_t image_width;
uint16_t image_height;
uint8_t pixel_depth;
uint8_t image_descriptor;
};
static Error decode_tga_rle(const uint8_t *p_compressed_buffer, size_t p_pixel_size, uint8_t *p_uncompressed_buffer, size_t p_output_size, size_t p_input_size);
static Error convert_to_image(Ref<Image> p_image, const uint8_t *p_buffer, const tga_header_s &p_header, const uint8_t *p_palette, const bool p_is_monochrome, size_t p_input_size);
public:
virtual Error load_image(Ref<Image> p_image, FileAccess *f, bool p_force_linear, float p_scale);
virtual void get_recognized_extensions(List<String> *p_extensions) const;
ImageLoaderTGA();
};
#endif