1 files changed, 75 insertions, 0 deletions
diff --git a/sc4pd/headers/lang/FIFOT.h b/sc4pd/headers/lang/FIFOT.h
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+++ b/sc4pd/headers/lang/FIFOT.h
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+/*
+	SuperCollider real time audio synthesis system
+    Copyright (c) 2002 James McCartney. All rights reserved.
+	http://www.audiosynth.com
+
+    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+/*
+
+A Fifo for sending/receiving some type of object.
+
+*/
+
+#ifndef _FIFOT_
+#define _FIFOT_
+
+template <class T, int N> class FIFOT
+{
+public:
+	FIFOT()
+			: mMask(N-1), mReadHead(0), mWriteHead(0)
+		{
+		}
+	void MakeEmpty() { mReadHead = mWriteHead; }
+	bool IsEmpty() { return mReadHead == mWriteHead; }
+	int CanGet() { 
+		int diff = mWriteHead - mReadHead;
+		return diff >= 0 ? diff : N - diff; 
+	}
+	int CanPut() { return N-1-CanGet(); }
+	
+	int NextPos(int inPos) { return (inPos + 1) & mMask; }
+	
+	bool Put(const T& inItem)
+		{
+			long next = NextPos(mWriteHead); 
+			if (next == mReadHead) return false; // fifo is full
+			mItems[next] = inItem;
+			mWriteHead = next;
+			return true;
+		}
+		
+	bool Get(T& outItem) // get next and advance
+		{
+			if (IsEmpty()) return false;
+			long next = NextPos(mReadHead); 
+			outItem = mItems[next];
+			mReadHead = next;
+			return true;
+		}
+	void DebugDump() 
+		{
+			post("FIFO N %d  mMask %d  mReadHead %d  mWriteHead%d\n", 
+				N, mMask, mReadHead, mWriteHead);
+		}
+		
+private:
+	long mMask;
+	volatile long mReadHead, mWriteHead;// mReclaimHead;
+	T mItems[N];
+};
+
+#endif
+\ No newline at end of file