1 files changed, 47 insertions, 0 deletions
diff --git a/FIFO.h b/FIFO.h
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+++ b/FIFO.h
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+/*
+    Copyright 2016-2017 StapleButter
+
+    This file is part of melonDS.
+
+    melonDS 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 3 of the License, or (at your option)
+    any later version.
+
+    melonDS 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 melonDS. If not, see http://www.gnu.org/licenses/.
+*/
+
+#ifndef FIFO_H
+#define FIFO_H
+
+#include "types.h"
+
+class FIFO
+{
+public:
+    FIFO(u32 num);
+    ~FIFO();
+
+    void Clear();
+
+    void Write(u32 val);
+    u32 Read();
+    u32 Peek();
+
+    u32 Level() { return NumOccupied; }
+    bool IsEmpty() { return NumOccupied == 0; }
+    bool IsFull() { return NumOccupied >= NumEntries; }
+
+private:
+    u32 NumEntries;
+    u32* Entries;
+    u32 NumOccupied;
+    u32 ReadPos, WritePos;
+};
+
+#endif