Specify the default ALSA audio device name.
Defined in <SDL3/SDL_hints.h>
#define SDL_HINT_AUDIO_ALSA_DEFAULT_DEVICE "SDL_AUDIO_ALSA_DEFAULT_DEVICE"
This variable is a specific audio device to open when the "default" audio device is used. By default if 4 channel audio is requested, the "plug:surround40" device will be opened and if 6 channel audio is requested the "plug:surround51" device will be opened.
This hint should be set before an audio device is opened.
This hint is available since SDL 3.0.0.