add queen mary DSP library

[ardour.git] / libs / qm-dsp / dsp / signalconditioning / Filter.h

diff --git a/libs/qm-dsp/dsp/signalconditioning/Filter.h b/libs/qm-dsp/dsp/signalconditioning/Filter.h
new file mode 100644 (file)
index 0000000..b0ff3dc
--- /dev/null
+++ b/libs/qm-dsp/dsp/signalconditioning/Filter.h
@@ -0,0 +1,53 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    QM DSP Library
+
+    Centre for Digital Music, Queen Mary, University of London.
+    This file 2005-2006 Christian Landone.
+
+    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 FILTER_H
+#define FILTER_H
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+struct FilterConfig{
+    unsigned int ord;
+    double* ACoeffs;
+    double* BCoeffs;
+};
+
+class Filter  
+{
+public:
+    Filter( FilterConfig Config );
+    virtual ~Filter();
+
+    void reset();
+
+    void process( double *src, double *dst, unsigned int length );
+       
+
+private:
+    void initialise( FilterConfig Config );
+    void deInitialise();
+
+    unsigned int m_ord;
+
+    double* m_inBuffer;
+    double* m_outBuffer;
+
+    double* m_ACoeffs;
+    double* m_BCoeffs;
+};
+
+#endif