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diff --git a/engines/sword25/fmv/theora_decoder.h b/engines/sword25/fmv/theora_decoder.h
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+++ b/engines/sword25/fmv/theora_decoder.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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#ifndef SWORD25_THEORADECODER_H
+#define SWORD25_THEORADECODER_H
+
+#include "graphics/video/video_decoder.h"
+
+#include <theora/theoradec.h>
+#include <vorbis/codec.h>
+
+namespace Common {
+	class SeekableReadStream;
+}
+
+namespace Sword25 {
+
+/**
+ *
+ * Decoder for Theora videos.
+ * Video decoder used in engines:
+ *  - sword25
+ */
+class TheoraDecoder : public Graphics::FixedRateVideoDecoder {
+public:
+	TheoraDecoder();
+	virtual ~TheoraDecoder();
+
+	/**
+	 * Load a video file
+	 * @param stream  the stream to load
+	 */
+	bool load(Common::SeekableReadStream &stream);
+	void close();
+
+	/**
+	 * Decode the next frame and return the frame's surface
+	 * @note the return surface should *not* be freed
+	 * @note this may return 0, in which case the last frame should be kept on screen
+	 */
+	Graphics::Surface *decodeNextFrame();
+
+	bool isVideoLoaded() const { return _fileStream != 0; }
+	uint16 getWidth() const { return _surface->w; }
+	uint16 getHeight() const { return _surface->h; }
+	uint32 getFrameCount() const { return _frameCount; }
+	Graphics::PixelFormat getPixelFormat() const { return Graphics::PixelFormat(3, 8, 8, 8, 0, 0, 0, 0, 0); }
+
+protected:
+	Common::Rational getFrameRate() const { return _frameRate; }
+
+private:
+	void queuePage(ogg_page *page);
+	int bufferData();
+
+private:
+	Common::SeekableReadStream *_fileStream;
+	Graphics::Surface *_surface;
+	Common::Rational _frameRate;
+	uint32 _frameCount;
+
+	ogg_sync_state _oggSync;
+	ogg_page _oggPage;
+	ogg_packet _oggPacket;
+	ogg_stream_state _vorbisOut;
+	ogg_stream_state _theoraOut;
+	th_info _theoraInfo;
+	th_comment _theoraComment;
+	th_dec_ctx *_theoraDecode;
+	th_setup_info *_theoraSetup;
+	vorbis_info _vorbisInfo;
+	vorbis_dsp_state _vorbisDSP;
+	vorbis_block _vorbisBlock;
+	vorbis_comment _vorbisComment;
+
+	int _theoraPacket;
+	int _vorbisPacket;
+	int _stateFlag;
+
+	int _ppLevelMax;
+	int _ppLevel;
+	int _ppInc;
+
+	// single frame video buffering
+	int _videobufReady;
+	ogg_int64_t  _videobufGranulePos;
+	double _videobufTime;
+
+	// single audio fragment audio buffering
+	int _audiobufFill;
+	int _audiobufReady;
+	ogg_int16_t *_audiobuf;
+	ogg_int64_t  _audiobufGranulePos; // time position of last sample
+};
+
+} // End of namespace Sword25
+
+#endif