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+/*
+    cw_binaural~: a binaural synthesis external for pure data
+    by David Doukhan - david.doukhan@gmail.com - http://www.limsi.fr/Individu/doukhan
+    and Anne Sedes - sedes.anne@gmail.com
+    Copyright (C) 2009-2011  David Doukhan and Anne Sedes
+
+    For more details, see CW_binaural~, a binaural synthesis external for Pure Data
+    David Doukhan and Anne Sedes, PDCON09
+
+
+    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 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+
+#ifndef DELAY_HPP_
+# define DELAY_HPP_
+
+# include <string>
+
+using namespace std;
+
+class Delay
+{
+public:
+  Delay(unsigned size);
+  virtual ~Delay();
+  virtual void process(const float* input, float* output, float new_delay, unsigned n) = 0;
+  static Delay* create(string delay_name, unsigned size);
+protected:
+  inline void push_value(float f);
+  
+  const unsigned _size;
+  unsigned _fifo_id;
+  float *  _fifo;
+  float _old_delay, _cur_delay;
+};
+
+
+// Does no fractional Delay
+class DummyDelay: public Delay
+{
+public:
+  DummyDelay(int size): Delay(size) {}
+  virtual void process(const float* input, float* output, float new_delay, unsigned n);
+};
+
+// 1st order fractional Delay
+class BasicInterpolDelay: public Delay
+{
+public:
+  BasicInterpolDelay(int size): Delay(size) {}
+  virtual void process(const float* input, float* output, float new_delay, unsigned n);
+};
+
+// SuperCollider fractional Delay
+class SCDelay: public Delay
+{
+public:
+  SCDelay(int size): Delay(size) {}
+  virtual void process(const float* input, float* output, float new_delay, unsigned n);
+};
+
+
+// 6th order fractional Delay
+class CZDelay: public Delay
+{
+public:
+  CZDelay(int size): Delay(size) {}
+  virtual void process(const float* input, float* output, float new_delay, unsigned n);
+};
+
+
+class NoDelay: public Delay
+{
+public:
+  NoDelay(int size): Delay(size) {}
+  virtual void process(const float* input, float* output, float new_delay, unsigned n);
+};
+
+#endif