add sdl_image image_loader (untested)

external/sdl_image/CMakeLists.txt

@@ -9,6 +9,7 @@ if (NOT TARGET SDL3_image::SDL3_image)
 	set(SDL3IMAGE_BACKEND_STB OFF CACHE BOOL "" FORCE) # important for security
 	set(SDL3IMAGE_BACKEND_IMAGEIO OFF CACHE BOOL "" FORCE) # some funky apple cmake bug
 	set(SDL3IMAGE_JXL ON CACHE BOOL "" FORCE)
+	set(SDL3IMAGE_QOI OFF CACHE BOOL "" FORCE) # we have our own
 
 	FetchContent_Declare(SDL3_image
 		GIT_REPOSITORY https://github.com/libsdl-org/SDL_image

src/CMakeLists.txt

@@ -29,6 +29,8 @@ add_executable(tomato
 	./image_loader_webp.cpp
 	./image_loader_qoi.hpp
 	./image_loader_qoi.cpp
+	./image_loader_sdl_image.hpp
+	./image_loader_sdl_image.cpp
 
 	./texture_uploader.hpp
 	./sdlrenderer_texture_uploader.hpp
@@ -98,5 +100,6 @@ target_link_libraries(tomato PUBLIC
 	webpdemux
 	libwebpmux # the f why (needed for anim encode)
 	qoi
+	SDL3_image::SDL3_image
 )
 

src/image_loader_sdl_image.cpp

@@ -0,0 +1,118 @@
+#include "./image_loader_sdl_image.hpp"
+
+#include <SDL3_image/SDL_image.h>
+
+#include <optional>
+#include <iostream>
+
+static std::optional<const char*> getExt(SDL_IOStream* ios) {
+	if (IMG_isAVIF(ios)) {
+		return "avif";
+	} else if (IMG_isCUR(ios)) {
+		return "cur";
+	} else if (IMG_isICO(ios)) {
+		return "ico";
+	} else if (IMG_isBMP(ios)) {
+		return "bmp";
+	} else if (IMG_isGIF(ios)) {
+		return "gif";
+	} else if (IMG_isJPG(ios)) {
+		return "jpg";
+	} else if (IMG_isJXL(ios)) {
+		return "jxl";
+	} else if (IMG_isLBM(ios)) {
+		return "lbm";
+	} else if (IMG_isPCX(ios)) {
+		return "pcx";
+	} else if (IMG_isPNG(ios)) {
+		return "png";
+	} else if (IMG_isPNM(ios)) {
+		return "pnm";
+	} else if (IMG_isSVG(ios)) {
+		return "svg";
+	} else if (IMG_isTIF(ios)) {
+		return "tiff";
+	} else if (IMG_isXCF(ios)) {
+		return "xcf";
+	} else if (IMG_isXPM(ios)) {
+		return "xpm";
+	} else if (IMG_isXV(ios)) {
+		return "xv";
+	} else if (IMG_isWEBP(ios)) {
+		return "webp";
+	} else if (IMG_isQOI(ios)) {
+		return "qoi";
+	} else {
+		return std::nullopt;
+	}
+}
+
+ImageLoaderSDLImage::ImageInfo ImageLoaderSDLImage::loadInfoFromMemory(const uint8_t* data, uint64_t data_size) {
+	ImageInfo res;
+
+	auto* ios = SDL_IOFromConstMem(data, data_size);
+
+	// we ignore tga
+	auto ext_opt = getExt(ios);
+	if (!ext_opt.has_value()) {
+		return res;
+	}
+
+	SDL_Surface* surf = IMG_Load_IO(ios, SDL_TRUE);
+	if (surf == nullptr) {
+		return res;
+	}
+
+	res.width = surf->w;
+	res.height = surf->h;
+	res.file_ext = ext_opt.value();
+
+	SDL_DestroySurface(surf);
+
+	return res;
+}
+
+ImageLoaderSDLImage::ImageResult ImageLoaderSDLImage::loadFromMemoryRGBA(const uint8_t* data, uint64_t data_size) {
+	ImageResult res;
+
+	auto* ios = SDL_IOFromConstMem(data, data_size);
+
+	// we ignore tga
+	auto ext_opt = getExt(ios);
+	if (!ext_opt.has_value()) {
+		return res;
+	}
+
+	IMG_Animation* anim = IMG_LoadAnimation_IO(ios, SDL_TRUE);
+	if (anim == nullptr) {
+		return res;
+	}
+
+	for (int i = 0; i < anim->count; i++) {
+		SDL_Surface* conv_surf = SDL_ConvertSurfaceFormat(anim->frames[i], SDL_PIXELFORMAT_RGBA32);
+		if (conv_surf == nullptr) {
+			return res;
+		}
+
+
+		SDL_LockSurface(conv_surf);
+
+		auto& new_frame = res.frames.emplace_back();
+		new_frame.ms = anim->delays[i];
+		new_frame.data.insert(new_frame.data.cbegin(), (const uint8_t*)conv_surf->pixels, ((const uint8_t*)conv_surf->pixels) + (anim->w*anim->h*4));
+
+		SDL_UnlockSurface(conv_surf);
+		SDL_DestroySurface(conv_surf);
+	}
+
+	res.width = anim->w;
+	res.height = anim->h;
+	res.file_ext = ext_opt.value();
+
+	IMG_FreeAnimation(anim);
+
+	std::cout << "IL_SDLI: loaded img " << res.width << "x" << res.height << "\n";
+
+	return res;
+}
+

src/image_loader_sdl_image.hpp

@@ -0,0 +1,9 @@
+#pragma once
+
+#include "./image_loader.hpp"
+
+struct ImageLoaderSDLImage : public ImageLoaderI {
+	ImageInfo loadInfoFromMemory(const uint8_t* data, uint64_t data_size) override;
+	ImageResult loadFromMemoryRGBA(const uint8_t* data, uint64_t data_size) override;
+};
+