Provided by: libsdl3-doc_3.2.28+ds-1_all 

NAME
SDL_IOFromMem - Use this function to prepare a read-write memory buffer for use with SDL_IOStream.
SYNOPSIS
#include <SDL3/SDL_iostream.h>
SDL_IOStream * SDL_IOFromMem(void *mem, size_t size);
DESCRIPTION
This function sets up an SDL_IOStream struct based on a memory area of a certain size, for both read and
write access.
This memory buffer is not copied by the SDL_IOStream; the pointer you provide must remain valid until you
close the stream. Closing the stream will not free the original buffer.
If you need to make sure the SDL_IOStream never writes to the memory buffer, you should use
SDL_IOFromConstMem() with a read-only buffer of memory instead.
The following properties will be set at creation time by SDL:
• SDL_PROP_IOSTREAM_MEMORY_POINTER: this will be the mem parameter that was passed to this function.
• SDL_PROP_IOSTREAM_MEMORY_SIZE_NUMBER: this will be the size parameter that was passed to this function.
FUNCTION PARAMETERS
mem a pointer to a buffer to feed an SDL_IOStream stream.
size the buffer size, in bytes.
RETURN VALUE
Returns a pointer to a new SDL_IOStream structure or NULL on failure; call SDL_GetError() for more
information.
THREAD SAFETY
It is safe to call this function from any thread.
AVAILABILITY
This function is available since SDL 3.2.0.
SEE ALSO
SDL_IOFromConstMem(3), SDL_CloseIO(3), SDL_FlushIO(3), SDL_ReadIO(3), SDL_SeekIO(3), SDL_TellIO(3),
SDL_WriteIO(3)
Simple Directmedia Layer SDL 3.2.28 SDL_IOFromMem(3)