Use this function to create an SDL_IOStream that is backed by dynamically allocated memory.
Defined in <SDL3/SDL_iostream.h>
SDL_IOStream * SDL_IOFromDynamicMem(void);(SDL_IOStream *) Returns a pointer to a new SDL_IOStream structure or NULL on failure; call SDL_GetError() for more information.
This supports the following properties to provide access to the memory and control over allocations:
SDL_PROP_IOSTREAM_DYNAMIC_MEMORY_POINTER:
a pointer to the internal memory of the stream. This can be set to NULL
to transfer ownership of the memory to the application, which should
free the memory with SDL_free(). If this is
done, the next operation on the stream must be SDL_CloseIO().SDL_PROP_IOSTREAM_DYNAMIC_CHUNKSIZE_NUMBER:
memory will be allocated in multiples of this size, defaulting to
1024.It is safe to call this function from any thread.
This function is available since SDL 3.2.0.