43 

    44 // ============================ FILE EXTENSION TO MIME MAP ==============================

    45 

    46 // ----------------------------------------------------------------------------------------------------------

    47 // Statically allocated Mime Map

    48 // ----------------------------------------------------------------------------------------------------------

    49 //

    50 

    51 _LIT( KExtensionAac,    "aac" );

    52 _LIT( KExtensionAif,    "aif"); 

    53 _LIT( KExtensionAifc,   "aifc"); 

    54 _LIT( KExtensionAiff,   "aiff");

    55 _LIT( KExtensionAmr,    "amr" );

    56 _LIT( KExtensionAu,     "au" );

    57 _LIT( KExtensionAwb,    "awb" );

    58 _LIT( KExtensionMid,    "mid" );

    59 _LIT( KExtensionMidi,   "midi" );

    60 _LIT( KExtensionMka,    "mka" );

    61 _LIT( KExtensionMp3,    "mp3" );

    62 _LIT( KExtensionOgg,    "ogg");

    63 _LIT( KExtensionRa,     "ra"); 

    64 _LIT( KExtensionRam,    "ram"); 

    65 _LIT( KExtensionRmi,    "rmi"); 

    66 _LIT( KExtensionSnd,    "snd" );

    67 _LIT( KExtensionSpMid,  "spmid" );

    68 _LIT( KExtensionWav,    "wav" );

    69 _LIT( KExtensionWma,    "wma" );

    70 

    71 _LIT8( KMimeTypeAac,      "audio/aac" );

    72 _LIT8( KMimeTypeAiff,     "audio/x-aiff");

    73 _LIT8( KMimeTypeAmr,      "audio/amr" );

    74 _LIT8( KMimeTypeAu,       "audio/au" );

    75 _LIT8( KMimeTypeAwb,      "audio/amr-wb" );

    76 _LIT8( KMimeTypeBasic,    "audio/basic");

    77 _LIT8( KMimeTypeMatroska, "audio/x-matroska");

    78 _LIT8( KMimeTypeMid,      "audio/mid");

    79 _LIT8( KMimeTypeMidi,     "audio/midi" );

    80 _LIT8( KMimeTypeMpeg,     "audio/mpeg" );

    81 _LIT8( KMimeTypeOgg,      "audio/ogg");

    82 _LIT8( KMimeTypeReal,     "audio/x-pn-realaudio");

    83 _LIT8( KMimeTypeSpMidi,   "audio/sp-midi" );

    84 _LIT8( KMimeTypeWav,      "audio/wav" ); 

    85 _LIT8( KMimeTypeWma,      "audio/x-ms-wma");

    86 

    87 struct TMimeMapItem {

    88 	const TDesC  * iExt;

    89 	const TDesC8 * iType;

    90 };

    91 

    92 // We need to explicitly cast here as LitC::operator& requires writable DLL data (even though it is just a cast)

    93 #define MIME_MAP_ITEM(ext,type) { &REINTERPRET_CAST(const TDesC&, ext), &REINTERPRET_CAST(const TDesC8&, type) }

    94 

    95 // THIS ARRAY MUST BE SORTED BY EXTENSION

    96 static const TMimeMapItem KMimeMap [] = {

    97     MIME_MAP_ITEM( KExtensionAac,   KMimeTypeAac),

    98     MIME_MAP_ITEM( KExtensionAif,   KMimeTypeAiff ),

    99     MIME_MAP_ITEM( KExtensionAifc,  KMimeTypeAiff ),

   100     MIME_MAP_ITEM( KExtensionAiff,  KMimeTypeAiff ),

   101     MIME_MAP_ITEM( KExtensionAmr,   KMimeTypeAmr ),

   102     MIME_MAP_ITEM( KExtensionAu,    KMimeTypeAu ), // KMimeTypeAudioBasic?  "audio/x-au"?

   103     MIME_MAP_ITEM( KExtensionAwb,   KMimeTypeAwb ),

   104     MIME_MAP_ITEM( KExtensionMid,   KMimeTypeMidi ),

   105     MIME_MAP_ITEM( KExtensionMidi,  KMimeTypeMidi ),

   106     MIME_MAP_ITEM( KExtensionMka,   KMimeTypeMatroska ),

   107     MIME_MAP_ITEM( KExtensionMp3,   KMimeTypeMpeg ),

   108     MIME_MAP_ITEM( KExtensionOgg,   KMimeTypeOgg ),

   109     MIME_MAP_ITEM( KExtensionRa,    KMimeTypeReal ),

   110     MIME_MAP_ITEM( KExtensionRam,   KMimeTypeReal ),

   111     MIME_MAP_ITEM( KExtensionRmi,   KMimeTypeMid ),

   112     MIME_MAP_ITEM( KExtensionSnd,   KMimeTypeBasic ),

   113     MIME_MAP_ITEM( KExtensionSpMid, KMimeTypeSpMidi ),

   114     MIME_MAP_ITEM( KExtensionWav,   KMimeTypeWav ), // "audio/x-wav"?

   115     MIME_MAP_ITEM( KExtensionWma,   KMimeTypeWma )

   116 };

   117 

   118 // ----------------------------------------------------------------------------------------------------------

   119 // Look for Mime Type from map by file extension

   120 // Returns NULL if file extension is not known

   121 // ----------------------------------------------------------------------------------------------------------

   122 //

   123 static const TDesC8 * FindMimeTypeFromMap ( const TDesC& aFilename )

   124     {

   125     // extract extension

   126    	TPtrC extension;

   127     TInt pos = aFilename.LocateReverseF( '.' );

   128     if ( pos < 0  || ++pos >= aFilename.Length() )

   129         {

   130         return NULL;

   131         }

   132     extension.Set( aFilename.Mid( pos ) );

   133 

   134     // binary search from Mime Map

   135     TUint begin = 0;

   136     TUint end = sizeof KMimeMap / sizeof (TMimeMapItem);

   137     while (begin < end)

   138         {

   139         TUint at = (begin + end) / 2;

   140         const TMimeMapItem & item = KMimeMap[at];

   141         TUint r = item.iExt->CompareF(extension);

   142         if (r == 0)

   143             {

   144             return item.iType;

   145             }

   146         else if (r > 0)

   147             {

   148             end = at;

   149             }

   150         else

   151             {

   152             begin = at + 1;

   153             }

   154         }

   155     return NULL;

   156 }