Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_HINT_AUDIO_ALSA_DEFAULT_RECORDING_DEVICE - Specify the default ALSA audio recording device name.
SYNOPSIS
#include <SDL3/SDL_hints.h>
#define SDL_HINT_AUDIO_ALSA_DEFAULT_RECORDING_DEVICE "SDL_AUDIO_ALSA_DEFAULT_RECORDING_DEVICE"
DESCRIPTION
This variable is a specific audio device to open for recording, when the "default" audio device is used.
If this hint isn't set, SDL will check SDL_HINT_AUDIO_ALSA_DEFAULT_DEVICE before choosing a reasonable
default.
This hint should be set before an audio device is opened.
AVAILABILITY
This hint is available since SDL 3.2.0.
SEE ALSO
SDL_HINT_AUDIO_ALSA_DEFAULT_PLAYBACK_DEVICE(3), SDL_HINT_AUDIO_ALSA_DEFAULT_DEVICE(3)
Simple Directmedia Layer SDL 3.2.20 SDL_HINT_AUDIO_ALSA_DEFAULT_RECORDING_DEVICE(3)