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+////////////////////////////////////////////////////////////////////////////////
+///
+/// Linear interpolation routine.
+///
+/// Author : Copyright (c) Olli Parviainen
+/// Author e-mail : oparviai 'at' iki.fi
+/// SoundTouch WWW: http://www.surina.net/soundtouch
+///
+////////////////////////////////////////////////////////////////////////////////
+//
+// $Id: InterpolateLinear.h 179 2014-01-06 18:41:42Z oparviai $
+//
+////////////////////////////////////////////////////////////////////////////////
+//
+// License :
+//
+// SoundTouch audio processing library
+// Copyright (c) Olli Parviainen
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library 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
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#ifndef _InterpolateLinear_H_
+#define _InterpolateLinear_H_
+
+#include "RateTransposer.h"
+#include "STTypes.h"
+
+namespace soundtouch
+{
+
+/// Linear transposer class that uses integer arithmetics
+class InterpolateLinearInteger : public TransposerBase
+{
+protected:
+ int iFract;
+ int iRate;
+
+ virtual void resetRegisters();
+
+ virtual int transposeMono(SAMPLETYPE *dest,
+ const SAMPLETYPE *src,
+ int &srcSamples);
+ virtual int transposeStereo(SAMPLETYPE *dest,
+ const SAMPLETYPE *src,
+ int &srcSamples);
+ virtual int transposeMulti(SAMPLETYPE *dest, const SAMPLETYPE *src, int &srcSamples);
+public:
+ InterpolateLinearInteger();
+
+ /// Sets new target rate. Normal rate = 1.0, smaller values represent slower
+ /// rate, larger faster rates.
+ virtual void setRate(float newRate);
+};
+
+
+/// Linear transposer class that uses floating point arithmetics
+class InterpolateLinearFloat : public TransposerBase
+{
+protected:
+ float fract;
+
+ virtual void resetRegisters();
+
+ virtual int transposeMono(SAMPLETYPE *dest,
+ const SAMPLETYPE *src,
+ int &srcSamples);
+ virtual int transposeStereo(SAMPLETYPE *dest,
+ const SAMPLETYPE *src,
+ int &srcSamples);
+ virtual int transposeMulti(SAMPLETYPE *dest, const SAMPLETYPE *src, int &srcSamples);
+
+public:
+ InterpolateLinearFloat();
+};
+
+}
+
+#endif