1 files changed, 64 insertions, 0 deletions
diff --git a/flow/synth_multi_add_impl.cc b/flow/synth_multi_add_impl.cc
new file mode 100644
index 0000000..2bd14dc
--- /dev/null
+++ b/flow/synth_multi_add_impl.cc
@@ -0,0 +1,64 @@
+    /*
+
+    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., 59 Temple Place - Suite 330,
+    Boston, MA 02111-1307, USA.
+
+    */
+
+#include "artsflow.h"
+#include "stdsynthmodule.h"
+
+using namespace Arts;
+
+namespace Arts {
+
+class Synth_MULTI_ADD_impl :public Synth_MULTI_ADD_skel, public StdSynthModule
+{
+public:
+	void calculateBlock(unsigned long cycles);
+	AutoSuspendState autoSuspend() { return asSuspend; }
+};
+
+REGISTER_IMPLEMENTATION(Synth_MULTI_ADD_impl);
+
+}
+
+void Synth_MULTI_ADD_impl::calculateBlock(unsigned long cycles)
+{
+	float *outend = outvalue + cycles;
+	float *outp, *inp;
+
+	if(!invalue[0])
+	{
+		// no invalue? zero out the outvalue
+		for(outp = outvalue; outp != outend; outp++) *outp = 0.0;
+	}
+	else
+	{
+		// copy first signal
+		for(outp = outvalue, inp = invalue[0]; outp != outend; outp++, inp++)
+			*outp = *inp;
+
+		// add the others
+		for(int sig=1;(inp = invalue[sig]) != 0;sig++)
+		{
+			for(outp = outvalue; outp != outend;outp++,inp++)
+				*outp += *inp;
+		}
+	}
+}