Specify an application icon name for an audio device.
Some audio backends (such as Pulseaudio and Pipewire) allow you to set an
XDG icon name for your application. Among other things, this icon 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.
Note that this is unrelated to the icon used by the windowing system, which
may be set with SDL_SetWindowIcon (or via desktop file on Wayland).
Specify an application icon name for an audio device.
Some audio backends (such as Pulseaudio and Pipewire) allow you to set an XDG icon name for your application. Among other things, this icon 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. Note that this is unrelated to the icon used by the windowing system, which may be set with SDL_SetWindowIcon (or via desktop file on Wayland).
Setting this to "" or leaving it unset will have SDL use a reasonable default, "applications-games", which is likely to be installed. See https://specifications.freedesktop.org/icon-theme-spec/icon-theme-spec-latest.html
and https://specifications.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html
for the relevant XDG icon specs.
This hint should be set before an audio device is opened.