Provided by: libsdl3-doc_3.2.10+ds-1_all 

NAME
SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK - A value used to request a default playback audio device.
HEADER FILE
Defined in SDL3/SDL_audio.h
SYNOPSIS
#include "SDL3/SDL.h" #define SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK ((SDL_AudioDeviceID) 0xFFFFFFFFu)
DESCRIPTION
Several functions that require an SDL_AudioDeviceID will accept this value to signify the app just wants the system to choose a default device instead of the app providing a specific one.
AVAILABILITY
This macro is available since SDL 3.2.0. Simple Directmedia Layer SDL 3.2.10 SDL_AUDIO_DEVICE_DEFAULT_PLAYBACK(3)