Use this function to get the size of the data stream in an SDL_IOStream.
Sint64 SDL_SizeIO(SDL_IOStream *context);
context | the SDL_IOStream to get the size of the data stream from |
Returns the size of the data stream in the SDL_IOStream on success or a negative error code on failure; call SDL_GetError() for more information.
This function is available since SDL 3.0.0.