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00029 #ifndef INCLUDED_GR_FREQ_XLATING_FIR_FILTER_SCC_H
00030 #define INCLUDED_GR_FREQ_XLATING_FIR_FILTER_SCC_H
00031 
00032 #include <gr_sync_decimator.h>
00033 #include <gr_rotator.h>
00034 
00035 class gr_freq_xlating_fir_filter_scc;
00036 typedef boost::shared_ptr<gr_freq_xlating_fir_filter_scc> gr_freq_xlating_fir_filter_scc_sptr;
00037 
00043 gr_freq_xlating_fir_filter_scc_sptr 
00044 gr_make_freq_xlating_fir_filter_scc (int decimation, const std::vector<gr_complex> &taps,
00045                      double center_freq, double sampling_freq);
00046 
00047 
00048 class gr_fir_scc;
00049 
00063 class gr_freq_xlating_fir_filter_scc : public gr_sync_decimator
00064 {
00065  public:
00066   virtual ~gr_freq_xlating_fir_filter_scc ();
00067 
00068   void set_center_freq (double center_freq);
00069   void set_taps (const std::vector<gr_complex> &taps);
00070 
00071   int work (int noutput_items,
00072             gr_vector_const_void_star &input_items,
00073             gr_vector_void_star &output_items);
00074 
00075  private:
00076   friend gr_freq_xlating_fir_filter_scc_sptr 
00077   gr_make_freq_xlating_fir_filter_scc (int decimation, const std::vector<gr_complex> &taps,
00078                        double center_freq, double sampling_freq);
00079 
00080  protected:
00081   std::vector<gr_complex>       d_proto_taps;
00082   gr_fir_scc                   *d_composite_fir;
00083   gr_rotator                    d_r;
00084   double                        d_center_freq;
00085   double                        d_sampling_freq;
00086   bool                          d_updated;
00087 
00088   virtual void build_composite_fir ();
00089 
00095   gr_freq_xlating_fir_filter_scc (int decimation,
00096                           const std::vector<gr_complex> &taps,
00097                           double center_freq, double sampling_freq);
00098 };
00099 
00100 #endif