diff data/fft/FFTCache.h @ 0:fc9323a41f5a

start base : Sonic Visualiser sv1-1.0rc1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/data/fft/FFTCache.h	Fri May 11 09:08:14 2007 +0000
@@ -0,0 +1,58 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2006 Chris Cannam.
+    
+    This program 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 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef _FFT_CACHE_H_
+#define _FFT_CACHE_H_
+
+#include <cstdlib>
+#include <cmath>
+
+//#include <stdint.h>
+#include "system/System.h"
+
+class FFTCache
+{
+public:
+    virtual ~FFTCache() { }
+
+    virtual size_t getWidth() const = 0;
+    virtual size_t getHeight() const = 0;
+	
+    virtual void resize(size_t width, size_t height) = 0;
+    virtual void reset() = 0; // zero-fill or 1-fill as appropriate without changing size
+	
+    virtual float getMagnitudeAt(size_t x, size_t y) const = 0;
+    virtual float getNormalizedMagnitudeAt(size_t x, size_t y) const = 0;
+    virtual float getMaximumMagnitudeAt(size_t x) const = 0;
+    virtual float getPhaseAt(size_t x, size_t y) const = 0;
+
+    virtual void getValuesAt(size_t x, size_t y, float &real, float &imaginary) const = 0;
+
+    virtual bool haveSetColumnAt(size_t x) const = 0;
+
+    // may modify argument arrays
+    virtual void setColumnAt(size_t x, float *mags, float *phases, float factor) = 0;
+
+    // may modify argument arrays
+    virtual void setColumnAt(size_t x, float *reals, float *imags) = 0;
+
+    virtual void suspend() { }
+
+protected:
+    FFTCache() { }
+};
+
+
+#endif