fn get_custom_group_id()

in src/backend/mod.rs [1748:1786]

• 37 lines of code
• 1 McCabe index (conditional complexity)

fn get_custom_group_id(id: AudioDeviceID, devtype: DeviceType) -> Option<CString> {
    debug_assert_running_serially();

    const IMIC: u32 = 0x696D_6963; // "imic" (internal microphone)
    const ISPK: u32 = 0x6973_706B; // "ispk" (internal speaker)
    const EMIC: u32 = 0x656D_6963; // "emic" (external microphone)
    const HDPN: u32 = 0x6864_706E; // "hdpn" (headphone)

    match get_device_source(id, devtype) {
        s @ Ok(IMIC) | s @ Ok(ISPK) => {
            const GROUP_ID: &str = "builtin-internal-mic|spk";
            cubeb_log!(
                "Using hardcode group id: {} when source is: {:?}.",
                GROUP_ID,
                convert_uint32_into_string(s.unwrap())
            );
            return Some(CString::new(GROUP_ID).unwrap());
        }
        s @ Ok(EMIC) | s @ Ok(HDPN) => {
            const GROUP_ID: &str = "builtin-external-mic|hdpn";
            cubeb_log!(
                "Using hardcode group id: {} when source is: {:?}.",
                GROUP_ID,
                convert_uint32_into_string(s.unwrap())
            );
            return Some(CString::new(GROUP_ID).unwrap());
        }
        Ok(s) => {
            cubeb_log!(
                "No custom group id when source is: {:?}.",
                convert_uint32_into_string(s)
            );
        }
        Err(e) => {
            cubeb_log!("Error: {} when getting device source. ", e);
        }
    }
    None
}