/*
* Copyright (c) 2003, 2004 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: Exif tag wrapper
*
*/
#ifndef EXIFTAG_H
#define EXIFTAG_H
// INCLUDES
#include <e32base.h>
// CONSTANTS
// MACROS
// DATA TYPES
// FUNCTION PROTOTYPES
// FORWARD DECLARATIONS
class TExifTagInfo;
// CLASS DECLARATION
/**
* Interface class for handling Exif Tags.
* This class is used to get tag data from an Exif image.
* @lib ExifLib
* @since 2.6
*/
NONSHARABLE_CLASS( CExifTag ): public CBase
{
public: // Enumerations
/**
* Tag Data type enumeration.
*/
enum TExifTagDataType
{
ETagByte = 1,
ETagAscii = 2,
ETagShort = 3,
ETagLong = 4,
ETagRational = 5,
ETagUndefined = 7,
ETagSlong = 9,
ETagSrational = 10
};
public:
/**
* Destructor.
*/
virtual ~CExifTag();
public: // New functions
/**
* Duplicate constructor. Creates an exact copy instance of the tag.
* @since 2.6
* @param
* @return An instance of this class including the same contents of
* this instance.
*/
virtual CExifTag* DuplicateL() const = 0;
/**
* Returns the informative fields of a tag.
* @since 2.6
* @param
* @return TExifTagInfo structure including informative fields of a tag
*/
virtual TExifTagInfo TagInfo() const = 0;
/**
* Returns data contents of a tag
* @since 2.6
* @param
* @return Unmodifiable pointer to tag data.
*/
virtual TPtrC8 Data() const = 0;
};
class TExifTagInfo
{
public: // Constructors and destructor
IMPORT_C TExifTagInfo(
TUint16 aTagId,
CExifTag::TExifTagDataType aDataType,
TUint32 aDataCount );
public: // Data
// Tag ID
TUint16 iId;
// Tag data type
CExifTag::TExifTagDataType iDataType;
// Number of tag data elements (having tag data type).
TUint32 iDataCount;
};
#endif // EXIFTAG_H
// End of File