1 /*

     2 * Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  SConMetadata header file

    15 *

    16 */

    17 

    18 

    19 #ifndef _SCONMETADATA_H_

    20 #define _SCONMETADATA_H_

    21 

    22 #include <MetaDataField.hrh>

    23 

    24 class CSConTask;

    25 class CExifRead;

    26 class CExifTag;

    27 //============================================================

    28 // Class CSConMetadata declaration

    29 //============================================================  

    30 NONSHARABLE_CLASS( SConMetadata )

    31     {

    32     public:

    33     

    34     /**

    35      * Start processing metadata task

    36      * @param aTask used task

    37      * @param aFs aReference to RFs connection.

    38      * @return none

    39      */

    40     static void ProcessTask( CSConTask& aTask, RFs& aFs );

    41     

    42     private:

    43     

    44     /**

    45     * Get audio metadata to task

    46     * @return none

    47     */

    48     static void GetAudioMetadataL( CSConTask& aTask );

    49     

    50     /**

    51     * Get video metadata to task

    52     * @param aFs aReference to RFs connection.

    53     * @return none

    54     */

    55     static void GetVideoMetadataL( CSConTask& aTask, RFs& aFs );

    56     

    57     /**

    58     * parse exif field

    59     * @return HBufC8* parsed data. Leaves if not found

    60     */

    61     static HBufC8* GetExifTagL( CExifRead* aReader, const TUint8 aTagID ) ;

    62     

    63     /**

    64     * Parse TUint32 value from aData

    65     * @return TUint32 value

    66     */

    67     static TUint32 ReadTUint32( const TDesC8& aData );

    68     

    69     /**

    70      * Read data from file

    71      * @param aFs aReference to RFs connection.

    72      * @return file data

    73      */

    74     static HBufC8* GetFileDataLC( const TDesC& aFilename, RFs& aFs );

    75     

    76     /**

    77     * Get exif metadata to task

    78     * @param aFs aReference to RFs connection.

    79     * @return none

    80     */

    81     static void ReadExifDataL( CSConTask& aTask, RFs& aFs );

    82     

    83     /**

    84      * Convert latidute/longitude tag to TReal64 value

    85      * @return KErrNone if successfully converted

    86      */

    87     static TInt ConvertRationalTag( const CExifTag& aTag, TDes& aPosDegrees );

    88     

    89     /**

    90      * Get latidute value from Exif

    91      * @param aExifRead ExifReader used to read

    92      * @param aLatitude readed latidute

    93      * @return KErrNone if found

    94      */

    95     static TInt GetExifGPSLatitudeL( CExifRead& aExifRead, TDes& aLatitude );

    96     

    97     /**

    98      * Get longitude value from Exif

    99      * @param aExifRead ExifReader used to read

   100      * @param aLongitude readed longitude

   101      * @return KErrNone if found

   102      */

   103     static TInt GetExifGPSLongitudeL( CExifRead& aExifRead, TDes& aLongitude );

   104     

   105     /**

   106      * Get altidute value from Exif

   107      * @param aExifRead ExifReader used to read

   108      * @param aAltidute readed altidute

   109      * @return KErrNone if found

   110      */

   111     static TInt GetExifGPSAltiduteL( CExifRead& aExifRead, TDes& aAltidute );

   112     

   113     /**

   114     * Appends data field to buffer

   115     * @return none

   116     */

   117     static void AppendUtf8DataFieldL( CBufFlat* aBuffer, const TPtrC aAppendData,

   118         const TUint8 aFieldId );

   119     

   120     /**

   121     * Appends data field to buffer

   122     * @return none

   123     */

   124     static void AppendByteDataFieldL( CBufFlat* aBuffer, const TPtrC8 aAppendData,

   125         const TUint8 aFieldId );

   126     

   127     /**

   128     * Writes TUint32 value to buffer

   129     * @return none

   130     */

   131     static void WriteTUint32( CBufFlat* aBuffer, TInt offset, TUint32 aValue );

   132     

   133     /**

   134     * Appends data field to buffer

   135     * @return none

   136     */

   137     static void AppendTUintDataFieldL( CBufFlat* aBuffer, TUint32 aValue,

   138         const TUint8 aFieldId );

   139     

   140     /**

   141     * Get AudioFieldId

   142     * @return TUint8

   143     */

   144     static TUint8 AudioFieldId( const TMetaDataFieldId fieldId );

   145     

   146     };

   147 

   148 #endif // _SCONMETADATA_H_