1 files changed, 53 insertions, 0 deletions
diff --git a/arts/modules/synth/synth_pscale_impl.cpp b/arts/modules/synth/synth_pscale_impl.cpp
new file mode 100644
index 00000000..72298397
--- /dev/null
+++ b/arts/modules/synth/synth_pscale_impl.cpp
@@ -0,0 +1,53 @@
+/*
+
+    Copyright (C) 2000 Jeff Tranter
+                       tranter@pobox.com
+
+              (C) 1999 Stefan Westerfeld
+                       stefan@space.twc.de
+
+    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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+    */
+
+#include "artsmodulessynth.h"
+#include "stdsynthmodule.h"
+
+using namespace Arts;
+
+class Synth_PSCALE_impl : virtual public Synth_PSCALE_skel,
+						  virtual public StdSynthModule
+{
+protected:
+	float _top;
+
+public:
+	float top() { return _top; }
+	void top(float newTop) { _top = newTop; }
+
+	void calculateBlock(unsigned long samples)
+	{
+		for	(unsigned int i=0; i < samples; i++)
+		{
+			if (pos[i] >= _top)
+				outvalue[i] = invalue[i] * (1 - pos[i])/(1 - _top);
+			else
+				outvalue[i] = invalue[i] * pos[i] / _top;
+		}
+	}
+
+};
+
+REGISTER_IMPLEMENTATION(Synth_PSCALE_impl);