godot/modules/bmp/image_loader_bmp.h
Andrii Doroshenko (Xrayez) 422a8ffe02 Fix BMP loader to distinguish between compression types
Some of the values in compression enumeration represent uncompressed formats:

https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-wmf/4e588f70-bd92-4a6f-b77f-35d0feaf7a57

This allows the loader to proceed with uncompressed formats.
Note that loading compressed BMP's is still not supported.
2019-07-17 20:28:35 +03:00

93 lines
3.7 KiB
C++

/*************************************************************************/
/* image_loader_bmp.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
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/*************************************************************************/
#ifndef IMAGE_LOADER_BMP_H
#define IMAGE_LOADER_BMP_H
#include "core/io/image_loader.h"
class ImageLoaderBMP : public ImageFormatLoader {
protected:
static const unsigned BITMAP_SIGNATURE = 0x4d42;
static const unsigned BITMAP_FILE_HEADER_SIZE = 14; // bmp_file_header_s
static const unsigned BITMAP_INFO_HEADER_MIN_SIZE = 40; // bmp_info_header_s
enum bmp_compression_s {
BI_RGB = 0x00,
BI_RLE8 = 0x01, // compressed
BI_RLE4 = 0x02, // compressed
BI_BITFIELDS = 0x03,
BI_JPEG = 0x04,
BI_PNG = 0x05,
BI_ALPHABITFIELDS = 0x06,
BI_CMYK = 0x0b,
BI_CMYKRLE8 = 0x0c, // compressed
BI_CMYKRLE4 = 0x0d // compressed
};
struct bmp_header_s {
struct bmp_file_header_s {
uint16_t bmp_signature;
uint32_t bmp_file_size;
uint32_t bmp_file_padding;
uint32_t bmp_file_offset;
} bmp_file_header;
struct bmp_info_header_s {
uint32_t bmp_header_size;
uint32_t bmp_width;
uint32_t bmp_height;
uint16_t bmp_planes;
uint16_t bmp_bit_count;
uint32_t bmp_compression;
uint32_t bmp_size_image;
uint32_t bmp_pixels_per_meter_x;
uint32_t bmp_pixels_per_meter_y;
uint32_t bmp_colors_used;
uint32_t bmp_important_colors;
} bmp_info_header;
};
static Error convert_to_image(Ref<Image> p_image,
const uint8_t *p_buffer,
const uint8_t *p_color_buffer,
const uint32_t color_table_size,
const bmp_header_s &p_header);
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;
ImageLoaderBMP();
};
#endif // IMAGE_LOADER_BMP_H