(This is the documentation for SDL3, which is the current stable version. SDL2 was the previous version!)

SDL_IOFromDynamicMem

Use this function to create an SDL_IOStream that is backed by dynamically allocated memory.

Header File

Defined in <SDL3/SDL_iostream.h>

Syntax

SDL_IOStream * SDL_IOFromDynamicMem(void);

Return Value

(SDL_IOStream *) Returns a pointer to a new SDL_IOStream structure or NULL on failure; call SDL_GetError() for more information.

Remarks

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.

Version

This function is available since SDL 3.1.3.

See Also

• SDL_CloseIO
• SDL_ReadIO
• SDL_SeekIO
• SDL_TellIO
• SDL_WriteIO

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CategoryAPI, CategoryAPIFunction, CategoryIOStream

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