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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commite2de64d6f1beb9e492daf5b886e19933c1fa41dd (patch)
tree9047cf9e6b5c43878d5bf82660adae77ceee097a /arts/modules/synth/synth_atan_saturate_impl.cc
downloadtdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.tar.gz
tdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+ /*
+
+ Copyright (C) 2000 Jeff Tranter
+ tranter@pobox.com
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+
+ */
+
+#include <stdio.h>
+#include <math.h>
+#include "artsmodulessynth.h"
+#include "stdsynthmodule.h"
+
+using namespace Arts;
+
+// This can be used to get the input signal to the normalized range
+// between -1 and 1 that Synth_PLAY can process. The louder the input
+// signal, the more the signal is distorted by this module. For very
+// small input signals, the output signal is about the input signal
+// (no change).
+
+class Synth_ATAN_SATURATE_impl : virtual public Synth_ATAN_SATURATE_skel,
+ virtual public StdSynthModule
+{
+protected:
+ float _inscale;
+
+public:
+ float inscale() { return _inscale; }
+
+ void inscale(float newInscale) { _inscale = newInscale; }
+
+ void calculateBlock(unsigned long samples)
+ {
+ for (unsigned long i=0; i<samples; i++)
+ outvalue[i] = atan(invalue[i]*_inscale)/(M_PI/2.0);
+ }
+};
+
+REGISTER_IMPLEMENTATION(Synth_ATAN_SATURATE_impl);