#define STB_IMAGE_IMPLEMENTATION
#define STBI_MALLOC(sz)		SDL_malloc(sz)
#define STBI_REALLOC(p,newsz)	SDL_realloc(p,newsz)
#define STBI_FREE(p)		SDL_free(p)
#include <SDL3/SDL.h>
#include "stb_image.h"

#include "dat.h"
#include "fns.h"

void
free_image(Image *i)
{
	if (i->tex) {
		babble("destroying texture for image %s...", i->name);
		SDL_DestroyTexture(i->tex);
	}
	if (i->sur) {
		babble("destroying surface for image %s...", i->name);
		SDL_DestroySurface(i->sur);
	}
	if (i->data) {
		babble("destroying data for image %s...", i->name);
		stbi_image_free(i->data);
	}
}

int
load_image(Image *i, SDL_Renderer *ren)
{
	babble("opening image %s...", i->name);
	i->data = stbi_load(i->name, &i->w, &i->h, &i->bpp, 4);
	if (!i->data) {
		shit("stbi_load: %s", stbi_failure_reason());
		goto err;
	}

	babble("creating surface for image %s...", i->name);
	i->sur = SDL_CreateSurfaceFrom(i->w, i->h, SDL_PIXELFORMAT_RGBA32,
			i->data, i->w * 4);
	if (!i->sur) {
		shit("SDL_CreateSurfaceFrom: %s", SDL_GetError());
		goto err;
	}

	babble("creating texture for image %s...", i->name);
	i->tex = SDL_CreateTextureFromSurface(ren, i->sur);
	if (!i->tex) {
		shit("SDL_CreateTextureFromSurface: %s", SDL_GetError());
		goto err;
	}

	babble("created image %s!", i->name);
	return 0;

err:
	free_image(i);
	return -1;
}