// createBlock // // Create the actual GNU Radio Block to that will perform the work method. The resulting // block object is assigned to gr_stpr // // Add property change callbacks for getter/setter methods // void multiply_cc_2i_i::createBlock() { // // gr_sptr = xxx_make_xxx( args ); // gr_sptr = gr_make_multiply_cc(vlen); // // Use setThrottle method to enable the throttling of consumption/production of data by the // service function. The affect of the throttle will try to pause the execution of the // service function for a specified duration. This duration is calculated using the getTargetDuration() method // and the actual processing time to perform the work method. // // This is turned ON by default for "output" only components // // setThrottle( bool onoff ); // // Use maintainTimeStamp to enable proper data flow of timestamp with input and output data. // if turned on (true) // The timestamp from the input source will be used and maintained based on the output rate and // the number of samples produced // if turned off // then the timestamp from the input source is passed through if available or the time of day // // maintainTimestamp( bool onoff ); setupIOMappings(); }
/*! \brief Public contructor. * \param input_device Input device specifier. * \param audio_device Audio output device specifier, * e.g. hw:0 when using ALSA or Portaudio. * * \todo Option to use UHD device instead of FCD. */ receiver::receiver(const std::string input_device, const std::string audio_device) : d_running(false), d_input_rate(96000.0), d_audio_rate(48000), d_rf_freq(144800000.0), d_filter_offset(0.0), d_recording_wav(false), d_sniffer_active(false), d_iq_rev(false), d_dc_cancel(false), d_iq_balance(false), d_demod(RX_DEMOD_OFF) { tb = gr_make_top_block("gqrx"); if (input_device.empty()) { // FIXME: other OS src = osmosdr_make_source_c("file=/dev/random,freq=428e6,rate=96000,repeat=true,throttle=true"); } else { input_devstr = input_device; src = osmosdr_make_source_c(input_device); } rx = make_nbrx(d_input_rate, d_audio_rate); lo = gr_make_sig_source_c(d_input_rate, GR_SIN_WAVE, 0.0, 1.0); mixer = gr_make_multiply_cc(); iq_swap = make_iq_swap_cc(false); dc_corr = make_dc_corr_cc(d_input_rate, 1.0); iq_fft = make_rx_fft_c(4096u, 0); audio_fft = make_rx_fft_f(3072u); audio_gain0 = gr_make_multiply_const_ff(0.1); audio_gain1 = gr_make_multiply_const_ff(0.1); #ifdef WITH_PULSEAUDIO //pafix audio_snk = make_pa_sink(audio_device, d_audio_rate, "GQRX", "Audio output"); #else audio_snk = audio_make_sink(d_audio_rate, audio_device, true); #endif output_devstr = audio_device; /* wav sink and source is created when rec/play is started */ audio_null_sink = gr_make_null_sink(sizeof(float)); sniffer = make_sniffer_f(); /* sniffer_rr is created at each activation. */ set_demod(RX_DEMOD_NFM); }