add fftshift functions,header and interface

1 files changed, 68 insertions, 0 deletions

diff --git a/src/signalProcessing/includes/fftshift.h b/src/signalProcessing/includes/fftshift.h
new file mode 100644
index 00000000..3f3f6aa9
--- /dev/null
+++ b/src/signalProcessing/includes/fftshift.h
@@ -0,0 +1,68 @@
+/*
+ *  Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
+ *  Copyright (C) 2008-2008 - INRIA - Allan SIMON
+ *
+ *  This file must be used under the terms of the CeCILL.
+ *  This source file is licensed as described in the file COPYING, which
+ *  you should have received as part of this distribution.  The terms
+ *  are also available at
+ *  http://www.cecill.info/licences/Licence_CeCILL_V2-en.txt
+ *
+ */
+
+#ifndef __FFTSHIFT_H__
+#define __FFTSHIFT_H__
+
+
+/* 
+   fftshift rearrange the result of fft(x) 
+   it's call like that : fftshift(y), y=ff(x)
+*/
+#include "floatComplex.h"
+#include "doubleComplex.h"
+
+
+#define sfftshifts(in)					in
+#define dfftshifts(in)					in
+#define cfftshifts(in)					in
+#define zfftshifts(in)					in
+
+void sfftshifta(float* in,int rows,int columns,float* out);		
+
+void dfftshifta(double* in,int rows,int columns,double* out);
+
+void cfftshifta ( floatComplex* in , int rows, int cols, floatComplex* out);
+
+void zfftshifta ( doubleComplex* in , int rows, int cols, doubleComplex* out);
+
+
+#define srowfftshifts(in)					in
+#define drowfftshifts(in)					in
+#define crowfftshifts(in)					in
+#define zrowfftshifts(in)					in
+
+void srowfftshifta(float* in,int rows,int columns,float* out);		
+
+void drowfftshifta(double* in,int rows,int columns,double* out);
+
+void crowfftshifta ( floatComplex* in , int rows, int cols, floatComplex* out);
+
+void zrowfftshifta ( doubleComplex* in , int rows, int cols, doubleComplex* out);
+
+#define scolumnfftshifts(in)					in
+#define dcolumnfftshifts(in)					in
+#define ccolumnfftshifts(in)					in
+#define zcolumnfftshifts(in)					in
+
+void scolumnfftshifta(float* in,int rows,int columns,float* out);		
+
+void dcolumnfftshifta(double* in,int rows,int columns,double* out);
+
+void ccolumnfftshifta ( floatComplex* in , int rows, int cols, floatComplex* out);
+
+void zcolumnfftshifta ( doubleComplex* in , int rows, int cols, doubleComplex* out);
+
+
+
+#endif /* !__FFTSHIFT_H__ */
+