GNU Radio 3.5.1 C++ API
gr_fft_vfc.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2004,2010 Free Software Foundation, Inc.
00004  * 
00005  * This file is part of GNU Radio
00006  * 
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 3, or (at your option)
00010  * any later version.
00011  * 
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 
00023 #ifndef INCLUDED_GR_FFT_VFC_H
00024 #define INCLUDED_GR_FFT_VFC_H
00025 
00026 #include <gr_core_api.h>
00027 #include <gr_sync_block.h>
00028 
00029 class gri_fft_complex;
00030 
00031 class gr_fft_vfc;
00032 typedef boost::shared_ptr<gr_fft_vfc> gr_fft_vfc_sptr;
00033 
00034 GR_CORE_API gr_fft_vfc_sptr
00035 gr_make_fft_vfc (int fft_size, bool forward, const std::vector<float> &window);
00036 
00037 /*!
00038  * \brief Compute forward FFT.  float vector in / complex vector out.
00039  * \ingroup dft_blk
00040  */
00041 
00042 class GR_CORE_API gr_fft_vfc : public gr_sync_block
00043 {
00044   friend GR_CORE_API gr_fft_vfc_sptr
00045   gr_make_fft_vfc (int fft_size, bool forward, const std::vector<float>  &window);
00046 
00047   unsigned int  d_fft_size;
00048   std::vector<float> d_window;
00049   gri_fft_complex *d_fft;
00050 
00051   gr_fft_vfc (int fft_size, bool forward, const std::vector<float>  &window);
00052 
00053  public:
00054   ~gr_fft_vfc ();
00055 
00056   int work (int noutput_items,
00057             gr_vector_const_void_star &input_items,
00058             gr_vector_void_star &output_items);
00059   bool set_window(const std::vector<float> &window);
00060 };
00061 
00062 
00063 #endif /* INCLUDED_GR_FFT_VFC_H */