size_t
SDL_WriteBE64(SDL_RWops * dst, Uint64 value)
{
value = SDL_SwapBE64(value);
return (SDL_RWwrite(dst, &value, (sizeof value), 1));
}
size_t
SDL_WriteU8(SDL_RWops * dst, Uint8 value)
{
return (SDL_RWwrite(dst, &value, (sizeof value), 1));
}
size_t
SDL_WriteLE32(SDL_RWops * dst, Uint32 value)
{
value = SDL_SwapLE32(value);
return (SDL_RWwrite(dst, &value, (sizeof value), 1));
}
static void png_write_SDL(png_structp png_ptr, png_bytep data, png_size_t length)
{
SDL_RWops *rw = (SDL_RWops*)png_get_io_ptr(png_ptr);
SDL_RWwrite(rw, data, sizeof(png_byte), length);
}