Specify an application name for an audio device.
Defined in <SDL3/SDL_hints.h>
Some audio backends (such as PulseAudio) allow you to describe your audio stream. Among other things, this description might show up in a system control panel that lets the user adjust the volume on specific audio streams instead of using one giant master volume slider.
This hints lets you transmit that information to the OS. The contents of this hint are used while opening an audio device. You should use a string that describes your program ("My Game 2: The Revenge")
Setting this to "" or leaving it unset will have SDL use a reasonable default: this will be the name set with SDL_HINT_APP_NAME, if that hint is set. Otherwise, it'll probably the application's name or "SDL Application" if SDL doesn't have any better information.
This hint should be set before an audio device is opened.
This hint is available since SDL 3.0.0.