README change

1 files changed, 57 insertions, 0 deletions

diff --git a/gr-fft/include/fft/fft_vfc.h b/gr-fft/include/fft/fft_vfc.h
new file mode 100644
index 000000000..ec441d66a
--- /dev/null
+++ b/gr-fft/include/fft/fft_vfc.h
@@ -0,0 +1,57 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2010,2012 Free Software Foundation, Inc.
+ *
+ * This file is part of GNU Radio
+ *
+ * GNU Radio is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * GNU Radio is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Radio; see the file COPYING.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef INCLUDED_FFT_FFT_VFC_H
+#define INCLUDED_FFT_FFT_VFC_H
+
+#include <fft/api.h>
+#include <gr_sync_block.h>
+
+namespace gr {
+  namespace fft {
+
+    class FFT_API fft_vfc : virtual public gr_sync_block
+    {
+    public:
+
+      // gr::fft::fft_vfc::sptr
+      typedef boost::shared_ptr<fft_vfc> sptr;
+      
+      /*!
+       * \brief Compute forward or reverse FFT. float vector in / complex vector out.
+       * \ingroup dft_blk
+       */
+      static sptr make(int fft_size, bool forward,
+			       const std::vector<float> &window,
+			       int nthreads=1);
+
+      virtual void set_nthreads(int n) = 0;
+
+      virtual int nthreads() const = 0;
+
+      virtual bool set_window(const std::vector<float> &window) = 0;
+    };
+
+  } /* namespace fft */
+} /* namespace gr */
+
+#endif /* INCLUDED_FFT_FFT_VFC_H */