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24 #ifndef INCLUDED_GR_PFB_SYNTHESIS_FILTERBANK_CCF_H
25 #define INCLUDED_GR_PFB_SYNTHESIS_FILTERBANK_CCF_H
27 #include <gr_sync_interpolator.h>
28 #include <gri_fir_filter_with_buffer_ccf.h>
30 class gr_pfb_synthesis_filterbank_ccf;
31 typedef boost::shared_ptr<gr_pfb_synthesis_filterbank_ccf> gr_pfb_synthesis_filterbank_ccf_sptr;
32 gr_pfb_synthesis_filterbank_ccf_sptr gr_make_pfb_synthesis_filterbank_ccf
33 (unsigned int numchans, const std::vector<float> &taps);
35 class gri_fft_complex;
39 * \class gr_pfb_synthesis_filterbank_ccf
41 * \brief Polyphase synthesis filterbank with
42 * gr_complex input, gr_complex output and float taps
47 class gr_pfb_synthesis_filterbank_ccf : public gr_sync_interpolator
51 * Build the polyphase synthesis filterbank.
52 * \param numchans (unsigned integer) Specifies the number of
54 * \param taps (vector/list of floats) The prototype filter to
55 populate the filterbank.
57 friend gr_pfb_synthesis_filterbank_ccf_sptr gr_make_pfb_synthesis_filterbank_ccf
58 (unsigned int numchans, const std::vector<float> &taps);
61 unsigned int d_numchans;
62 unsigned int d_taps_per_filter;
63 gri_fft_complex *d_fft;
64 std::vector< gri_fir_filter_with_buffer_ccf*> d_filters;
65 std::vector< std::vector<float> > d_taps;
69 * Build the polyphase synthesis filterbank.
70 * \param numchans (unsigned integer) Specifies the number of
72 * \param taps (vector/list of floats) The prototype filter
73 to populate the filterbank.
75 gr_pfb_synthesis_filterbank_ccf (unsigned int numchans,
76 const std::vector<float> &taps);
79 ~gr_pfb_synthesis_filterbank_ccf ();
82 * Resets the filterbank's filter taps with the new prototype filter
83 * \param taps (vector/list of floats) The prototype filter to
84 populate the filterbank.
86 void set_taps (const std::vector<float> &taps);
89 * Print all of the filterbank taps to screen.
93 int work (int noutput_items,
94 gr_vector_const_void_star &input_items,
95 gr_vector_void_star &output_items);