extern SR_PRIV struct sr_output_module output_analog;
extern SR_PRIV struct sr_output_module output_srzip;
extern SR_PRIV struct sr_output_module output_wav;
extern SR_PRIV struct sr_output_module output_analog;
extern SR_PRIV struct sr_output_module output_srzip;
extern SR_PRIV struct sr_output_module output_wav;