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diff --git a/engines/lab/anim.h b/engines/lab/anim.h
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+++ b/engines/lab/anim.h
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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+/*
+ * This code is based on Labyrinth of Time code with assistance of
+ *
+ * Copyright (c) 1993 Terra Nova Development
+ * Copyright (c) 2004 The Wyrmkeep Entertainment Co.
+ *
+ */
+
+#ifndef LAB_ANIM_H
+#define LAB_ANIM_H
+
+namespace Lab {
+
+class LabEngine;
+#define CONTINUOUS      0xFFFF
+
+struct DIFFHeader {
+	uint16 _width;
+	uint16 _height;
+	char _fps;
+	uint32 _flags;
+};
+
+class Anim {
+private:
+	LabEngine *_vm;
+
+	uint32 _lastBlockHeader;
+	uint16 _numChunks;
+	uint32 _delayMicros;
+	bool _continuous;
+	bool _isPlaying;
+	bool _isAnim;
+	bool _isPal;
+	bool _donePal;
+	uint16 _frameNum;
+	bool _playOnce;
+	Common::File *_diffFile;
+	uint32 _diffFileStart;
+	uint32 _size;
+	bool _stopPlayingEnd;
+	uint16 _sampleSpeed;
+	uint32 _diffWidth;
+	uint32 _diffHeight;
+
+	byte *_outputBuffer;
+	DIFFHeader _headerdata;
+
+public:
+	Anim(LabEngine *vm);
+	~Anim();
+
+	char _diffPalette[256 * 3];
+	bool _waitForEffect; // Wait for each sound effect to finish before continuing.
+	bool _doBlack;       // Black the screen before new picture
+	bool _noPalChange;   // Don't change the palette.
+	byte *_scrollScreenBuffer;
+
+	/**
+	 * Reads in a DIFF file.
+	 */
+	void setOutputBuffer(byte *memoryBuffer); // nullptr for output to screen
+	void readDiff(Common::File *diffFile, bool playOnce, bool onlyDiffData);
+	void diffNextFrame(bool onlyDiffData = false);
+
+	/**
+	 * Stops an animation from running.
+	 */
+	void stopDiff();
+
+	/**
+	 * Stops an animation from running.
+	 */
+	void stopDiffEnd();
+
+	uint16 getDIFFHeight();
+
+	bool isPlaying() const { return _isPlaying;  }
+};
+
+} // End of namespace Lab
+
+#endif // LAB_ANIM_H