ryujinx/Ryujinx.Core/Hid/HidControllerId.cs

namespace Ryujinx.Core.Input
{
    public enum HidControllerId
    {
        CONTROLLER_PLAYER_1 = 0,
        CONTROLLER_PLAYER_2 = 1,
        CONTROLLER_PLAYER_3 = 2,
        CONTROLLER_PLAYER_4 = 3,
        CONTROLLER_PLAYER_5 = 4,
        CONTROLLER_PLAYER_6 = 5,
        CONTROLLER_PLAYER_7 = 6,
        CONTROLLER_PLAYER_8 = 7,
        CONTROLLER_HANDHELD = 8,
        CONTROLLER_UNKNOWN  = 9
    }
}