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

NAME
SDL_HINT_AUDIO_DISK_INPUT_FILE - Specify the input file when recording audio using the disk audio driver.
SYNOPSIS
#include <SDL3/SDL_hints.h>
#define SDL_HINT_AUDIO_DISK_INPUT_FILE "SDL_AUDIO_DISK_INPUT_FILE"
DESCRIPTION
This defaults to "sdlaudio-in.raw"
This hint should be set before an audio device is opened.
AVAILABILITY
This hint is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_HINT_AUDIO_DISK_INPUT_FILE(3)