---
name: "SDL_GetAudioDeviceGain"
section: "3"
platform: "linux"
package: "libsdl3-doc"
version: "3.2.10+ds-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/SDL_GetAudioDeviceGain"
---

# SDL\_GetAudioDeviceGain(3)

Get the gain of an audio device.

## NAME

SDL\_GetAudioDeviceGain - Get the gain of an audio device.

## HEADER FILE

Defined in SDL3/SDL\_audio.h

## SYNOPSIS

```
#include "SDL3/SDL.h"
```

**float SDL\_GetAudioDeviceGain(SDL\_AudioDeviceID devid);**

## DESCRIPTION

The gain of a device is its volume; a larger gain means a louder output, with a gain of zero being silence.

Audio devices default to a gain of 1.0f (no change in output).

Physical devices may not have their gain changed, only logical devices, and this function will always return -1.0f when used on physical devices.

## FUNCTION PARAMETERS

- *devid*

  the audio device to query.

## RETURN VALUE

Returns the gain of the device or -1.0f 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

**•**(3), [**SDL\_SetAudioDeviceGain**(3)](/SDL_SetAudioDeviceGain/3.md)