get_channel_from_mode
channel = get_channel_from_mode(channel->light,
channel_torch = get_channel_from_mode(light, GB_CHANNEL_MODE_TORCH);
channel_ind = get_channel_from_mode(light, GB_CHANNEL_MODE_INDICATOR);
channel_flash = get_channel_from_mode(light, GB_CHANNEL_MODE_FLASH);
channel_torch = get_channel_from_mode(channel->light,