const TUint32 KMTPMaxDescriptionLen = 0x00000100;  // 256

const TInt KMtpMaxStringLength = 255;

const TInt KMtpMaxDateTimeStringLength = 15;

_LIT( KMtpDateTimeFormat, "%F%Y%M%DT%H%T%S" );

    EGroupCodeGeneral    = 0x00000001,

    EGroupCodeSample     = 0x00000100,

    EGroupCodeSample,

        // The first group, mandatory for all

        { EMTPObjectPropCodeStorageID,        EGroupCodeGeneral },

        { EMTPObjectPropCodeObjectFormat,     EGroupCodeGeneral },

        { EMTPObjectPropCodeObjectSize,       EGroupCodeGeneral },

        { EMTPObjectPropCodeObjectFileName,   EGroupCodeGeneral },

        { EMTPObjectPropCodeParentObject,     EGroupCodeGeneral },

                                              EGroupCodeGeneral },

        { EMTPObjectPropCodeNonConsumable,    EGroupCodeGeneral },

        // The first group, addtional for all

        { EMTPObjectPropCodeName,             EGroupCodeGeneral },  // only for winlogo

        { EMTPObjectPropCodeDateCreated,      EGroupCodeGeneral },

        { EMTPObjectPropCodeDateModified,     EGroupCodeGeneral },

        // The first group, mandatory for video

        { EMTPObjectPropCodeWidth,            EGroupCodeGeneral },  // only for winlogo

        { EMTPObjectPropCodeHeight,           EGroupCodeGeneral },  // only for winlogo

        // The second group, for non-embedded album art

        { EMTPObjectPropCodeRepresentativeSampleFormat, EGroupCodeGeneral }, // changed for winlogo

        { EMTPObjectPropCodeRepresentativeSampleSize,   EGroupCodeGeneral }, // changed for winlogo

        { EMTPObjectPropCodeRepresentativeSampleHeight, EGroupCodeGeneral }, // changed for winlogo

        { EMTPObjectPropCodeRepresentativeSampleWidth,  EGroupCodeGeneral }, // changed for winlogo

        { EMTPObjectPropCodeRepresentativeSampleData,   EGroupCodeGeneral }, // changed for winlogo

        // The third group, additional for all

        { EMTPObjectPropCodeDateAdded,        EGroupCodeMediaDB },

        // The third group, mandatory for audio

        { EMTPObjectPropCodeArtist,           EGroupCodeMediaDB },

        { EMTPObjectPropCodeTrack,            EGroupCodeMediaDB },

        { EMTPObjectPropCodeGenre,            EGroupCodeMediaDB },

        { EMTPObjectPropCodeAlbumName,        EGroupCodeMediaDB },

        { EMTPObjectPropCodeSampleRate,       EGroupCodeMediaDB },

        { EMTPObjectPropCodeAudioWAVECodec,   EGroupCodeMediaDB },

        { EMTPObjectPropCodeAudioBitRate,     EGroupCodeMediaDB },

        { EMTPObjectPropCodeDuration,         EGroupCodeMediaDB },

        { EMTPObjectPropCodeDescription,      EGroupCodeMediaDB },

        { EMTPObjectPropCodeComposer,         EGroupCodeMediaDB },

        { EMTPObjectPropCodeAlbumArtist,      EGroupCodeMediaDB },

        // The third group, mandatory for video

        { EMTPObjectPropCodeScanType,         EGroupCodeMediaDB },

        { EMTPObjectPropCodeVideoBitRate,     EGroupCodeMediaDB },

        { EMTPObjectPropCodeEncodingProfile,  EGroupCodeMediaDB },

        // The third group, additional for video

        { EMTPObjectPropCodeParentalRating,   EGroupCodeMediaDB },

        { EMTPObjectPropCodeDRMStatus,        EGroupCodeMediaDB },

        { EMTPExtObjectPropCodeOmaDrmStatus,  EGroupCodeMediaDB }