coreaudio::audio_unit::render_callback::action_flags::OFFLINE_RENDER

pub const OFFLINE_RENDER: ActionFlags = ActionFlags{bits: au::kAudioOfflineUnitRenderAction_Render,}

Once an offline unit has been successfully preflighted, it is then put into its render mode. This flag is set to indicate to the audio unit that it is now in that state and that it should perform processing on the input data.

Available in OS X v10.3 and later.