tentative commit of new panners subtree

git-svn-id: svn://localhost/ardour2/branches/3.0@8521 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 70 insertions, 0 deletions

diff --git a/libs/panners/1in2out/panner_1in2out.h b/libs/panners/1in2out/panner_1in2out.h
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+++ b/libs/panners/1in2out/panner_1in2out.h
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+/*
+    Copyright (C) 2004-2011 Paul Davis
+
+    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.
+
+    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, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __ardour_panner_1in2out_h__
+#define __ardour_panner_1in2out_h__
+
+#include <cmath>
+#include <cassert>
+#include <vector>
+#include <string>
+#include <iostream>
+
+#include "pbd/stateful.h"
+#include "pbd/controllable.h"
+#include "pbd/cartesian.h"
+
+#include "ardour/types.h"
+#include "ardour/automation_control.h"
+#include "ardour/automatable.h"
+
+namespace ARDOUR {
+
+class PannerStereoBase : public class Panner
+{
+  public:
+	PannerStereoBase (Panner&);
+	~PannerStereoBase ();
+
+        void set_position (double);
+
+        ChanCount in() const { return ChanCount (DataType::AUDIO, 1); }
+        ChanCount out() const { return ChanCount (DataType::AUDIO, 2); }
+
+	/* this class just leaves the pan law itself to be defined
+	   by the update(), do_distribute_automated()
+	   methods. derived classes also need a factory method
+	   and a type name. See EqualPowerStereoPanner as an example.
+	*/
+
+	void do_distribute (AudioBuffer& src, BufferSet& obufs, gain_t gain_coeff, pframes_t nframes);
+
+  protected:
+        boost::shared_ptr<AutomationControl> _position;
+	float left;
+	float right;
+	float desired_left;
+	float desired_right;
+	float left_interp;
+	float right_interp;
+};
+
+}
+
+#endif /* __ardour_panner_1in2out_h__ */