firewire_channel = defaults->getf(firewire_channel, "%sAFIREWIRE_OUT_CHANNEL", prefix);
firewire_port = defaults->getf(firewire_port, "%sAFIREWIRE_OUT_PORT", prefix);
defaults->getf(firewire_path, "%sAFIREWIRE_OUT_PATH", prefix);
firewire_channel = defaults->getf(firewire_channel, "%sAFIREWIRE_OUT_CHANNEL", prefix);
firewire_port = defaults->getf(firewire_port, "%sAFIREWIRE_OUT_PORT", prefix);
defaults->getf(firewire_path, "%sAFIREWIRE_OUT_PATH", prefix);