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00024 #ifndef INCLUDED_GR_COSTAS_LOOP_CC_H
00025 #define INCLUDED_GR_COSTAS_LOOP_CC_H
00026
00027 #include <gr_sync_block.h>
00028 #include <stdexcept>
00029 #include <fstream>
00030
00031 class gr_costas_loop_cc;
00032 typedef boost::shared_ptr<gr_costas_loop_cc> gr_costas_loop_cc_sptr;
00033
00057 gr_costas_loop_cc_sptr
00058 gr_make_costas_loop_cc (float alpha, float beta,
00059 float max_freq, float min_freq,
00060 int order
00061 ) throw (std::invalid_argument);
00062
00063
00074 class gr_costas_loop_cc : public gr_sync_block
00075 {
00076 friend gr_costas_loop_cc_sptr gr_make_costas_loop_cc (float alpha, float beta,
00077 float max_freq, float min_freq,
00078 int order
00079 ) throw (std::invalid_argument);
00080
00081 float d_alpha, d_beta, d_max_freq, d_min_freq, d_phase, d_freq;
00082 int d_order;
00083
00084 gr_costas_loop_cc (float alpha, float beta,
00085 float max_freq, float min_freq,
00086 int order
00087 ) throw (std::invalid_argument);
00088
00093 float phase_detector_4(gr_complex sample) const;
00094
00099 float phase_detector_2(gr_complex sample) const;
00100
00101
00102 float (gr_costas_loop_cc::*d_phase_detector)(gr_complex sample) const;
00103
00104 public:
00105
00106 int work (int noutput_items,
00107 gr_vector_const_void_star &input_items,
00108 gr_vector_void_star &output_items);
00109 };
00110
00111 #endif