###### (This is the documentation for SDL3, which is the current stable version. [SDL2](https://wiki.libsdl.org/SDL2/) was the previous version!) # SDL_ConvertAudioSamples Convert some audio data of one format to another format. ## Header File Defined in [](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_audio.h) ## Syntax ```c bool SDL_ConvertAudioSamples(const SDL_AudioSpec *src_spec, const Uint8 *src_data, int src_len, const SDL_AudioSpec *dst_spec, Uint8 **dst_data, int *dst_len); ``` ## Function Parameters | | | | | -------------------------------------- | ------------ | ------------------------------------------------------------------------------------------------------------------------------------ | | const [SDL_AudioSpec](SDL_AudioSpec) * | **src_spec** | the format details of the input audio. | | const Uint8 * | **src_data** | the audio data to be converted. | | int | **src_len** | the len of src_data. | | const [SDL_AudioSpec](SDL_AudioSpec) * | **dst_spec** | the format details of the output audio. | | Uint8 ** | **dst_data** | will be filled with a pointer to converted audio data, which should be freed with [SDL_free](SDL_free)(). On error, it will be NULL. | | int * | **dst_len** | will be filled with the len of dst_data. | ## Return Value (bool) Returns true on success or false on failure; call [SDL_GetError](SDL_GetError)() for more information. ## Remarks Please note that this function is for convenience, but should not be used to resample audio in blocks, as it will introduce audio artifacts on the boundaries. You should only use this function if you are converting audio data in its entirety in one call. If you want to convert audio in smaller chunks, use an [SDL_AudioStream](SDL_AudioStream), which is designed for this situation. Internally, this function creates and destroys an [SDL_AudioStream](SDL_AudioStream) on each use, so it's also less efficient than using one directly, if you need to convert multiple times. ## Thread Safety It is safe to call this function from any thread. ## Version This function is available since SDL 3.1.3. ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryAudio](CategoryAudio)