###### (This function is part of SDL_mixer, a separate library from SDL.)
# MIX_CreateMixer

Create a mixer that generates audio to a memory buffer.

## Header File

Defined in [<SDL3_mixer/SDL_mixer.h>](https://github.com/libsdl-org/SDL_mixer/blob/main/include/SDL3_mixer/SDL_mixer.h)

## Syntax

```c
MIX_Mixer * MIX_CreateMixer(const SDL_AudioSpec *spec);
```

## Function Parameters

|                       |          |                                            |
| --------------------- | -------- | ------------------------------------------ |
| const SDL_AudioSpec * | **spec** | the audio format that mixer will generate. |

## Return Value

([MIX_Mixer](MIX_Mixer) *) Returns a mixer that can be used to generate
audio, or NULL on failure; call SDL_GetError() for more information.

## Remarks

Usually you want [MIX_CreateMixerDevice](MIX_CreateMixerDevice)() instead
of this function. The mixer created here can be used with
[MIX_Generate](MIX_Generate)() to produce more data on demand, as fast as
desired.

An audio format must be specified. This is the format it will output in.
This cannot be NULL.

Once a mixer is created, next steps are usually to load audio (through
[MIX_LoadAudio](MIX_LoadAudio)() and friends), create a track
([MIX_CreateTrack](MIX_CreateTrack)()), and play that audio through that
track.

When done with the mixer, it can be destroyed with
[MIX_DestroyMixer](MIX_DestroyMixer)().

## Thread Safety

It is safe to call this function from any thread.

## Version

This function is available since SDL_mixer 3.0.0.

## See Also

- [MIX_CreateMixerDevice](MIX_CreateMixerDevice)
- [MIX_DestroyMixer](MIX_DestroyMixer)

----
[CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategorySDLMixer](CategorySDLMixer)