--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmlibs/mmfw/Recogniser/src/parsers.h	Thu Oct 07 22:34:12 2010 +0100
@@ -0,0 +1,248 @@
+// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+#ifndef PARSERS_H
+#define PARSERS_H
+
+#include "readers.h"
+
+//
+// Utility class for performing bit operations.
+//
+class TFlags
+	{
+public:
+	TFlags()
+	 : iFlags(0)
+		{
+		}
+		
+	void SetExtensionFlag(){ iFlags |= KBit0; }
+	void SetBit(TUint32 aMask) { iFlags |= aMask; }
+	
+	TUint32 GetBitField(TUint32 aMask, TUint8 aRightShift = 0)
+		{
+		return ((iFlags & aMask) >> aRightShift);
+		}
+		
+private:
+	TUint32 iFlags;
+	};
+
+
+//
+// An ID3 tag parser.
+//
+class TID3Parser
+	{
+public:
+	static TBool ReadAndSkipID3L(CReader& aReader);
+	};
+	
+
+//
+// A raw-AAC audio file parser.
+//
+class TAACParser
+	{
+public:
+	static void DoRecognise(const TDesC& aFileExt, CReader& aReader, TMatch& aMatch);
+
+protected:
+	TAACParser(CReader& aReader, TFlags& aFlags);
+	void ParseL();
+	TInt CheckForFrameHeaderL(TInt& aFrameLength);
+	
+private:
+	CReader& iReader;
+	TFlags& iFlags;
+	};
+
+
+//
+// A raw-MP3 audio file parser.
+//
+class TMP3Parser
+	{
+public:
+	static void DoRecognise(const TDesC& aFileExt, CReader& aReader, TMatch& aMatch);
+
+protected:
+	TMP3Parser(CReader& aReader, TFlags& aFlags);
+	void ParseL();
+	TInt CheckForFrameHeaderL(TInt& aFrameLength);
+
+private:
+	CReader& iReader;
+	TFlags& iFlags;
+	};
+
+
+//
+// An MPEG4 container file format parser.
+//
+#define KMPEG4BoxTitleLen		4
+
+class TMPEG4Parser
+	{
+public:
+	static void DoRecognise(const TDesC& aFileExt, CReader& aReader, TMatch& aMatch);
+
+protected:
+	TMPEG4Parser(CReader& aReader, TFlags& aFlags);
+	const TText8* MatchFileType(const TDesC& aExt);
+	static TInt IsCompatibleBrand(TUint32 aBrand, TInt aStartPos = 0);
+
+	// Parsing routines.
+	void ParseL();
+	void SkipCurrentBoxL();
+	void ReadBoxHeaderL();
+	void ReadFileTypeL();
+	void ReadMovieL();
+	void ReadTrackL();
+	void ReadTrackHeaderL();
+	void ReadMediaL();
+	void ReadHandlerL();
+			
+private:
+	// Data members.
+	TUint32 iTitle;			// The title of the current box.
+	TInt iBrandIndex;
+	TBool iIsFinished;
+	TInt64 iSize; 			// The current box's size.
+	TBool iSizeIn32bit;
+	CReader& iReader;
+	TFlags& iFlags;
+	TBool iVideoAssumed;
+	};
+
+
+//
+// An MPEG2 container file format parser.
+//
+class TMPEG2Parser
+	{
+public:
+	static void DoRecognise(const TDesC& aFileExt, CReader& aReader, TMatch& aMatch);
+
+protected:
+	TMPEG2Parser(CReader& aReader, TFlags& aFlags);
+	void ParseL();
+	TBool NextStartCodeL();
+	void ReadPackHeaderL();
+	void SkipL();
+	const TText8* MatchExtension(const TDesC& aExt);
+	
+private:
+	CReader& iReader;
+	TFlags& iFlags;
+	};
+
+
+//
+// A Matroska container file format parser.
+//
+class TMatroskaParser
+	{
+public:
+	static void DoRecognise(const TDesC& aFileExt, CReader& aReader, TMatch& aMatch);
+
+protected:
+	TMatroskaParser(CReader& aReader, TFlags& aFlags);
+	void ParseL();
+	TUint64 ReadDataL(TBool aTurnOffHighestSetBit = EFalse);
+	void ReadElementL(TUint64& aElementID, TInt64& aSize);
+	TBool ReadSegmentL(TUint64& aNextID, TInt64& aNextSize);
+	TBool ReadTrackL(TInt64 aTrackSize);
+	const TText8* MatchExtension(const TDesC& aExt);
+
+private:
+	CReader& iReader;
+	TFlags& iFlags;
+	};
+
+
+//
+// A Windows Media ASF file format parser.
+//
+class TASFParser
+	{
+public:
+	static void DoRecognise(const TDesC& aFileExt, CReader& aReader, TMatch& aMatch);
+
+protected:
+	TASFParser(CReader& aReader, TFlags& aFlags);
+	void ParseL();
+	void ReadObjectL(TDes8& aGUID, TInt64& aSize);
+	void ReadGUIDL(TDes8& aGUID);
+	const TText8* MatchExtension(const TDesC& aExt, TBool aVideo);
+	
+private:
+	CReader& iReader;
+	TFlags& iFlags;
+	};
+	
+
+//
+// A RealMedia file format parser.
+//
+class TRMParser
+	{
+public:
+	static void DoRecognise(const TDesC& aFileExt, CReader& aReader, TMatch& aMatch);
+
+protected:
+	TRMParser(CReader& aReader, TFlags& aFlags);
+	void ParseL();
+	void ReadChunkHeaderL(TUint32& aObjectId, TUint32& aSize, TBool aFirstChunk = EFalse);
+	void MatchExtension(const TDesC& aFileExt);
+	TBool ReadMediaPropertiesL();
+	
+private:
+	CReader& iReader;
+	TFlags& iFlags;
+	};
+
+
+//
+// A RAM file parser.
+//
+class TRAMParser
+	{
+public:
+	static void DoRecognise(const TDesC& aFileExt, CReader& aReader, TMatch& aMatch);
+	};
+
+
+//
+// An SDP file parser.
+//
+class TSDPParser
+	{
+public:
+	static void DoRecognise(const TDesC& aFileExt, CReader& aReader, TMatch& aMatch);
+	};
+
+
+//
+// An XPS file parser.
+//
+class TXPSParser
+	{
+public:
+	static void DoRecognise(const TDesC& aFileExt, CReader& aReader, TMatch& aMatch);
+	};
+
+#endif