rs_image

Bindings for Rust's image crate to C/C++. Rust's image crate, for coincidental reasons that I'm unsure of, supports way more image formats (including the one I needed for a project) then what I could find in C/C++.

Format	Decoding	Encoding
AVIF	Yes (8-bit only) *	Yes (lossy only)
BMP	Yes	Yes
DDS	Yes	---
Farbfeld	Yes	Yes
GIF	Yes	Yes
HDR	Yes	Yes
ICO	Yes	Yes
JPEG	Yes	Yes
EXR	Yes	Yes
PNG	Yes	Yes
PNM	Yes	Yes
QOI	Yes	Yes
TGA	Yes	Yes
TIFF	Yes	Yes
WebP	Yes	Yes (lossless only)

• If CMake is able to find libdav1d on your system.

Currently, the most important parts - DynamicImage, and Rust's own std::iter::Iterator, are bound.

Usage

C++

// Currently, only loading from your own data buffer is supported.
std::ifstream is("image.png");
std::istream_iterator<char> start(is), end;
std::vector<char> image(start, end);

auto img = new DynamicImage(image);
std::println(std::cout, "loaded a {}x{} image", img.width(),
                img.height());

auto pixels = img.pixels();

for (auto pixel = pixels.next(); pixel != NULL; pixel = pixels.next()) {
    auto color = pixel->color;
    std::println(std::cout, "At ({} {}): ({} {} {} {})", pixel->x, pixel->y,color.r,color.g,color.b,color.a);
}

C

// have fun!

Installation

It can be imported via cmake:

FetchContent_Declare(
    rs_systemtime
    GIT_REPOSITORY "https://github.com/IoIxD/rs_image.git"
    GIT_PROGRESS TRUE
)
FetchContent_MakeAvailable(rs_image)
include_directories(${RS_IMAGE_INCLUDE_DIRECTORY})