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

NAME
SDL_HINT_AUDIO_CATEGORY - A variable controlling the audio category on iOS and macOS.
SYNOPSIS
#include <SDL3/SDL_hints.h>
#define SDL_HINT_AUDIO_CATEGORY "SDL_AUDIO_CATEGORY"
DESCRIPTION
The variable can be set to the following values:
• "ambient": Use the AVAudioSessionCategoryAmbient audio category, will be muted by the phone mute switch
(default)
• "playback": Use the AVAudioSessionCategoryPlayback category.
For more information, see Apple's documentation:
https://developer.apple.com/library/content/documentation/Audio/Conceptual/AudioSessionProgrammingGuide/AudioSessionCategoriesandModes/AudioSessionCategoriesandModes.html
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_CATEGORY(3)