diff data/fileio/FFTFuzzyAdapter.cpp @ 148:1a42221a1522

* Reorganising code base.  This revision will not compile.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/data/fileio/FFTFuzzyAdapter.cpp	Mon Jul 31 11:49:58 2006 +0000
@@ -0,0 +1,72 @@
+/* -*- 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.
+*/
+
+#include "FFTFuzzyAdapter.h"
+
+#include <cassert>
+
+FFTFuzzyAdapter::FFTFuzzyAdapter(const DenseTimeValueModel *model,
+				 int channel,
+				 WindowType windowType,
+				 size_t windowSize,
+				 size_t windowIncrement,
+				 size_t fftSize,
+				 bool polar,
+				 size_t fillFromColumn) :
+    m_server(0),
+    m_xshift(0),
+    m_yshift(0)
+{
+    m_server = FFTDataServer::getFuzzyInstance(model,
+                                               channel,
+                                               windowType,
+                                               windowSize,
+                                               windowIncrement,
+                                               fftSize,
+                                               polar,
+                                               fillFromColumn);
+
+    size_t xratio = windowIncrement / m_server->getWindowIncrement();
+    size_t yratio = m_server->getFFTSize() / fftSize;
+
+    while (xratio > 1) {
+        if (xratio & 0x1) {
+            std::cerr << "ERROR: FFTFuzzyAdapter: Window increment ratio "
+                      << windowIncrement << " / "
+                      << m_server->getWindowIncrement()
+                      << " must be a power of two" << std::endl;
+            assert(!(xratio & 0x1));
+        }
+        ++m_xshift;
+        xratio >>= 1;
+    }
+
+    while (yratio > 1) {
+        if (yratio & 0x1) {
+            std::cerr << "ERROR: FFTFuzzyAdapter: FFT size ratio "
+                      << m_server->getFFTSize() << " / " << fftSize
+                      << " must be a power of two" << std::endl;
+            assert(!(yratio & 0x1));
+        }
+        ++m_yshift;
+        yratio >>= 1;
+    }
+}
+
+FFTFuzzyAdapter::~FFTFuzzyAdapter()
+{
+    FFTDataServer::releaseInstance(m_server);
+}
+