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+ /*
+
+ Copyright (C) 2000 Stefan Westerfeld
+ stefan@space.twc.de
+
+ 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., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+
+ */
+
+#include <stdlib.h>
+
+#include "artsmodulessynth.h"
+#include "stdsynthmodule.h"
+
+using namespace Arts;
+
+namespace Arts {
+
+#define NOISE_SIZE 8192
+
+class Synth_NOISE_impl : virtual public Synth_NOISE_skel,
+ virtual public StdSynthModule
+{
+ static float noise[NOISE_SIZE];
+ static bool noiseInit;
+ unsigned long pos;
+public:
+ Synth_NOISE_impl()
+ {
+ if(!noiseInit)
+ {
+ for(unsigned long i=0;i<NOISE_SIZE;i++)
+ noise[i] = ((float)rand()/(float)RAND_MAX)*2.0-1.0;
+ noiseInit = true;
+ }
+ }
+ void calculateBlock(unsigned long samples)
+ {
+ unsigned long i;
+ pos = rand();
+ for(i=0;i<samples;i++) outvalue[i] = noise[pos++ & (NOISE_SIZE-1)];
+ }
+};
+
+float Synth_NOISE_impl::noise[8192];
+bool Synth_NOISE_impl::noiseInit = false;
+
+REGISTER_IMPLEMENTATION(Synth_NOISE_impl);
+
+}