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// The authors have released ID3Lib as Public Domain (PD) and claim no copyright,
// patent or other intellectual property protection in this work. This means that
// it may be modified, redistributed and used in commercial and non-commercial
// software and hardware without restrictions. ID3Lib is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
//
// The ID3Lib authors encourage improvements and optimisations to be sent to the
// ID3Lib coordinator, currently Dirk Mahoney (dirk@id3.org). Approved
// submissions may be altered, and will be included and released under these terms.
//
// Mon Nov 23 18:34:01 1998
#include <string.h>
#include "id3_field.h"
static ID3_FieldDef ID3FD_URL[] =
{
// FIELD FIELD FIXED RENDER IF OR
// NAME TYPE LEN VER REV WHAT? FLAGS LINKED FIELD
{ ID3FN_URL, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_NOFIELD }
};
static ID3_FieldDef ID3FD_UserURL[] =
{
// FIELD FIELD FIXED RENDER IF OR
// NAME TYPE LEN VER REV WHAT? FLAGS LINKED FIELD
{ ID3FN_TEXTENC, ID3FTY_INTEGER, 1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_DESCRIPTION, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, ID3FF_NULL | ID3FF_ADJUSTENC, ID3FN_NOFIELD },
{ ID3FN_URL, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_NOFIELD }
};
static ID3_FieldDef ID3FD_Text[] =
{
// FIELD FIELD FIXED RENDER IF OR
// NAME TYPE LEN VER REV WHAT? FLAGS LINKED FIELD
{ ID3FN_TEXTENC, ID3FTY_INTEGER, 1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_TEXT, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, ID3FF_ADJUSTENC, ID3FN_NOFIELD },
{ ID3FN_NOFIELD }
};
static ID3_FieldDef ID3FD_UserText[] =
{
// FIELD FIELD FIXED RENDER IF OR
// NAME TYPE LEN VER REV WHAT? FLAGS LINKED FIELD
{ ID3FN_TEXTENC, ID3FTY_INTEGER, 1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_DESCRIPTION, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, ID3FF_NULL | ID3FF_ADJUSTENC, ID3FN_NOFIELD },
{ ID3FN_TEXT, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, ID3FF_ADJUSTENC, ID3FN_NOFIELD },
{ ID3FN_NOFIELD }
};
static ID3_FieldDef ID3FD_GeneralText[] =
{
// FIELD FIELD FIXED RENDER IF OR
// NAME TYPE LEN VER REV WHAT? FLAGS LINKED FIELD
{ ID3FN_TEXTENC, ID3FTY_INTEGER, 1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_LANGUAGE, ID3FTY_ASCIISTRING, 3, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_DESCRIPTION, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, ID3FF_NULL | ID3FF_ADJUSTENC, ID3FN_NOFIELD },
{ ID3FN_TEXT, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, ID3FF_ADJUSTENC, ID3FN_NOFIELD },
{ ID3FN_NOFIELD }
};
static ID3_FieldDef ID3FD_Picture[] =
{
// FIELD FIELD FIXED RENDER IF OR
// NAME TYPE LEN VER REV WHAT? FLAGS LINKED FIELD
{ ID3FN_TEXTENC, ID3FTY_INTEGER, 1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_IMAGEFORMAT, ID3FTY_ASCIISTRING, 3, 2, 0, ID3VC_LOWER, NULL, ID3FN_NOFIELD },
{ ID3FN_MIMETYPE, ID3FTY_ASCIISTRING, -1, 3, 0, ID3VC_HIGHER, ID3FF_NULL, ID3FN_NOFIELD },
{ ID3FN_PICTURETYPE, ID3FTY_INTEGER, 1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_DESCRIPTION, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, ID3FF_NULL | ID3FF_ADJUSTENC, ID3FN_NOFIELD },
{ ID3FN_DATA, ID3FTY_BINARY, -1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_NOFIELD }
};
static ID3_FieldDef ID3FD_GEO[] =
{
// FIELD FIELD FIXED RENDER IF OR
// NAME TYPE LEN VER REV WHAT? FLAGS LINKED FIELD
{ ID3FN_TEXTENC, ID3FTY_INTEGER, 1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_MIMETYPE, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, ID3FF_NULL, ID3FN_NOFIELD },
{ ID3FN_FILENAME, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, ID3FF_NULL | ID3FF_ADJUSTENC, ID3FN_NOFIELD },
{ ID3FN_DESCRIPTION, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, ID3FF_NULL | ID3FF_ADJUSTENC, ID3FN_NOFIELD },
{ ID3FN_DATA, ID3FTY_BINARY, -1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_NOFIELD }
};
static ID3_FieldDef ID3FD_UFI[] =
{
// FIELD FIELD FIXED RENDER IF OR
// NAME TYPE LEN VER REV WHAT? FLAGS LINKED FIELD
{ ID3FN_OWNER, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, ID3FF_NULL, ID3FN_NOFIELD },
{ ID3FN_DATA, ID3FTY_BINARY, -1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_NOFIELD }
};
static ID3_FieldDef ID3FD_PlayCounter[] =
{
// FIELD FIELD FIXED RENDER IF OR
// NAME TYPE LEN VER REV WHAT? FLAGS LINKED FIELD
{ ID3FN_COUNTER, ID3FTY_INTEGER, 4, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_NOFIELD }
};
static ID3_FieldDef ID3FD_Popularimeter[] =
{
// FIELD FIELD FIXED RENDER IF OR
// NAME TYPE LEN VER REV WHAT? FLAGS LINKED FIELD
{ ID3FN_EMAIL, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, ID3FF_NULL, ID3FN_NOFIELD },
{ ID3FN_RATING, ID3FTY_INTEGER, 1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_COUNTER, ID3FTY_INTEGER, 4, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_NOFIELD }
};
static ID3_FieldDef ID3FD_Registration[] =
{
// FIELD FIELD FIXED RENDER IF OR
// NAME TYPE LEN VER REV WHAT? FLAGS LINKED FIELD
{ ID3FN_OWNER, ID3FTY_ASCIISTRING, -1, 3, 0, ID3VC_HIGHER, ID3FF_NULL, ID3FN_NOFIELD },
{ ID3FN_SYMBOL, ID3FTY_INTEGER, 1, 3, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_DATA, ID3FTY_BINARY, -1, 3, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_NOFIELD }
};
static ID3_FieldDef ID3FD_InvolvedPeople[] =
{
// FIELD FIELD FIXED RENDER IF OR
// NAME TYPE LEN VER REV WHAT? FLAGS LINKED FIELD
{ ID3FN_TEXTENC, ID3FTY_INTEGER, 1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_TEXT, ID3FTY_ASCIISTRING, -1, 2, 0, ID3VC_HIGHER, ID3FF_NULL | ID3FF_NULLDIVIDE | ID3FF_ADJUSTENC, ID3FN_NOFIELD },
{ ID3FN_NOFIELD }
};
static ID3_FieldDef ID3FD_Volume[] =
{
// FIELD FIELD FIXED RENDER IF OR
// NAME TYPE LEN VER REV WHAT? FLAGS LINKED FIELD
{ ID3FN_VOLUMEADJ, ID3FTY_INTEGER, 1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_NUMBITS, ID3FTY_INTEGER, 1, 2, 0, ID3VC_HIGHER, NULL, ID3FN_NOFIELD },
{ ID3FN_VOLCHGRIGHT, ID3FTY_BITFIELD, -1, 2, 0, ID3VC_HIGHER, ID3FF_ADJUSTEDBY, ID3FN_NUMBITS },
{ ID3FN_VOLCHGLEFT, ID3FTY_BITFIELD, -1, 2, 0, ID3VC_HIGHER, ID3FF_ADJUSTEDBY, ID3FN_NUMBITS },
{ ID3FN_PEAKVOLRIGHT, ID3FTY_BITFIELD, -1, 2, 0, ID3VC_HIGHER, ID3FF_ADJUSTEDBY, ID3FN_NUMBITS },
{ ID3FN_PEAKVOLLEFT, ID3FTY_BITFIELD, -1, 2, 0, ID3VC_HIGHER, ID3FF_ADJUSTEDBY, ID3FN_NUMBITS },
{ ID3FN_NOFIELD }
};
static ID3_FrameDef ID3_FrameDefs[] =
{
// FRAME ID SHORTID LONGID PRI TAGDISCARD FILEDISCARD HANDLER FIELDDEFS
{ ID3FID_ENCODEDBY, "TEN", "TENC", 0, false, true, NULL, ID3FD_Text },
{ ID3FID_ORIGALBUM, "TOT", "TOAL", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_PUBLISHER, "TPB", "TPUB", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_ENCODERSETTINGS, "TSS", "TSSE", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_ORIGFILENAME, "TOF", "TOFN", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_LANGUAGE, "TLA", "TLAN", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_PARTINSET, "TPA", "TPOS", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_DATE, "TDA", "TDAT", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_TIME, "TIM", "TIME", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_RECORDINGDATES, "TRD", "TRDA", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_MEDIATYPE, "TMT", "TMED", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_FILETYPE, "TFT", "TFLT", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_NETRADIOSTATION, "TRN", "TRSN", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_NETRADIOOWNER, "TRO", "TRDO", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_LYRICIST, "TXT", "TEXT", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_ORIGARTIST, "TOA", "TOPE", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_ORIGLYRICIST, "TOL", "TOLY", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_CONTENTGROUP, "TT1", "TIT1", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_TITLE, "TT2", "TIT2", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_SUBTITLE, "TT3", "TIT3", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_LEADARTIST, "TP1", "TPE1", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_BAND, "TP2", "TPE2", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_CONDUCTOR, "TP3", "TPE3", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_MIXARTIST, "TP4", "TPE4", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_ALBUM, "TAL", "TALB", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_YEAR, "TYE", "TYER", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_COMPOSER, "TCM", "TCOM", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_COPYRIGHT, "TCR", "TCOP", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_CONTENTTYPE, "TCO", "TCON", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_TRACKNUM, "TRK", "TRCK", 0, false, false, NULL, ID3FD_Text },
{ ID3FID_USERTEXT, "TXX", "TXXX", 0, false, false, NULL, ID3FD_UserText },
{ ID3FID_COMMENT, "COM", "COMM", 0, false, false, NULL, ID3FD_GeneralText },
{ ID3FID_UNSYNCEDLYRICS, "ULT", "USLT", 0, false, false, NULL, ID3FD_GeneralText },
// URL Frames
{ ID3FID_WWWAUDIOFILE, "WAF", "WOAF", 0, false, false, NULL, ID3FD_URL },
{ ID3FID_WWWARTIST, "WAR", "WOAR", 0, false, false, NULL, ID3FD_URL },
{ ID3FID_WWWAUDIOSOURCE, "WAS", "WOAS", 0, false, false, NULL, ID3FD_URL },
{ ID3FID_WWWCOMMERCIALINFO, "WCM", "WCOM", 0, false, false, NULL, ID3FD_URL },
{ ID3FID_WWWCOPYRIGHT, "WCP", "WCOP", 0, false, false, NULL, ID3FD_URL },
{ ID3FID_WWWPUBLISHER, "WPB", "WPUB", 0, false, false, NULL, ID3FD_URL },
{ ID3FID_WWWPAYMENT, "WPY", "WPAY", 0, false, false, NULL, ID3FD_URL },
{ ID3FID_WWWRADIOPAGE, "WRA", "WORS", 0, false, false, NULL, ID3FD_URL },
{ ID3FID_WWWUSER, "WXX", "WXXX", 0, false, false, NULL, ID3FD_UserURL },
// misc frames
{ ID3FID_INVOLVEDPEOPLE, "IPL", "IPLS", 0, false, false, NULL, ID3FD_InvolvedPeople },
{ ID3FID_PICTURE, "PIC", "APIC", 0, false, false, NULL, ID3FD_Picture },
{ ID3FID_GENERALOBJECT, "GEO", "GEOB", 0, false, false, NULL, ID3FD_GEO },
{ ID3FID_UNIQUEFILEID, "UFI", "UFID", 0, false, false, NULL, ID3FD_UFI },
{ ID3FID_PLAYCOUNTER, "CNT", "PCNT", 0, false, false, NULL, ID3FD_PlayCounter },
{ ID3FID_POPULARIMETER, "POP", "POPM", 0, false, false, NULL, ID3FD_Popularimeter },
{ ID3FID_CRYPTOREG, " ", "ENCR", 0, false, false, NULL, ID3FD_Registration },
{ ID3FID_GROUPINGREG, " ", "GRID", 0, false, false, NULL, ID3FD_Registration },
{ ID3FID_NOFRAME }
};
ID3_Field::ID3_Field ( void )
{
name = ID3FN_NOFIELD;
type = ID3FTY_INTEGER;
data = 0;
size = 0;
flags = 0;
Clear();
}
ID3_Field::~ID3_Field ( void )
{
Clear();
}
void ID3_Field::Clear ( void )
{
if ( data && size && type != ID3FTY_INTEGER )
delete[] data;
type = ID3FTY_INTEGER;
data = 0;
size = sizeof ( luint );
hasChanged = true;
return;
}
void ID3_Field::SetVersion ( uchar ver, uchar rev )
{
if ( version != ver || rev != rev )
hasChanged = true;
version = ver;
revision = rev;
return;
}
bool ID3_Field::HasChanged ( void )
{
return hasChanged;
}
luint ID3_Field::Size ( void )
{
return BinSize ( false );
}
luint ID3_Field::BinSize ( bool withExtras )
{
luint bytes = 0;
bool doIt = false;
if ( control == ID3VC_HIGHER )
{
if ( version >= ioVersion )
if ( revision >= ioRevision )
doIt = true;
}
else
{
if ( version <= ioVersion )
if ( revision <= ioRevision )
doIt = true;
}
if ( doIt )
{
bytes = size;
if ( withExtras )
{
if ( ! data && size )
{
if ( flags & ID3FF_NULL )
bytes = 2;
else
bytes = 0;
}
// if we are a Unicode string, add 2 bytes for the BOM (but
// only if there is a string to render - regardless of NULL)
if ( type == ID3FTY_UNICODESTRING && data && size )
bytes += 2;
// if we are an ASCII string, divide by sizeof ( wchar_t )
// because internally we store the string as Unicode, so
// the ASCII version will only be half as long
if ( type == ID3FTY_ASCIISTRING )
bytes /= sizeof ( wchar_t );
}
else
{
// because it seems that the application called us via ID3_Field::Size()
// we are going to return the number of characters, not bytes, so if
// the string is Unicode, we will half the 'bytes' variable because
// Unicode strings have twice as many bytes as they do characters
if ( type == ID3FTY_UNICODESTRING )
bytes /= sizeof ( wchar_t );
}
// check to see if we are within the legal limit for this field
// -1 means arbitrary length field
if ( fixedLength != -1 )
bytes = fixedLength;
}
return bytes;
}
luint ID3_Field::Parse ( uchar *buffer, luint posn, luint buffSize )
{
luint bytesUsed = 0;
bool doIt = false;
if ( control == ID3VC_HIGHER )
{
if ( version >= ioVersion )
if ( revision >= ioRevision )
doIt = true;
}
else
{
if ( version <= ioVersion )
if ( revision <= ioRevision )
doIt = true;
}
if ( doIt )
{
switch ( type )
{
case ID3FTY_INTEGER:
bytesUsed = ParseInteger ( buffer, posn, buffSize );
break;
case ID3FTY_BINARY:
bytesUsed = ParseBinary ( buffer, posn, buffSize );
break;
case ID3FTY_ASCIISTRING:
bytesUsed = ParseASCIIString ( buffer, posn, buffSize );
break;
case ID3FTY_UNICODESTRING:
bytesUsed = ParseUnicodeString ( buffer, posn, buffSize );
break;
default:
ID3_THROW ( ID3E_UnknownFieldType );
break;
}
}
return bytesUsed;
}
ID3_FrameDef *ID3_FindFrameDef ( ID3_FrameID id )
{
ID3_FrameDef *info = NULL;
luint cur = 0;
bool done = false;
bool found = false;
while ( ! found && ! done )
{
if ( ID3_FrameDefs[ cur ].id == id )
found = true;
else if ( ID3_FrameDefs[ cur ].id == ID3FID_NOFRAME )
done = true;
else
cur++;
}
if ( found )
info = &ID3_FrameDefs[ cur ];
return info;
}
ID3_FrameID ID3_FindFrameID ( char *id )
{
ID3_FrameID fid = ID3FID_NOFRAME;
luint cur = 0;
bool done = false;
bool found = false;
while ( ! found && ! done )
{
if ( ( ( strcmp ( ID3_FrameDefs[ cur ].shortTextID, id ) == 0 ) && strlen ( id ) == 3 ) ||
( ( strcmp ( ID3_FrameDefs[ cur ].longTextID, id ) == 0 ) && strlen ( id ) == 4 ) )
found = true;
else if ( ID3_FrameDefs[ cur ].id == ID3FID_NOFRAME )
done = true;
else
cur++;
}
if ( found )
fid = ID3_FrameDefs[ cur ].id;
return fid;
}
luint ID3_Field::Render ( uchar *buffer )
{
luint bytesUsed = 0;
bool doIt = false;
if ( control == ID3VC_HIGHER )
{
if ( version >= ioVersion )
if ( revision >= ioRevision )
doIt = true;
}
else
{
if ( version <= ioVersion )
if ( revision <= ioRevision )
doIt = true;
}
if ( doIt )
switch ( type )
{
case ID3FTY_INTEGER:
bytesUsed = RenderInteger ( buffer );
break;
case ID3FTY_BINARY:
bytesUsed = RenderBinary ( buffer );
break;
case ID3FTY_ASCIISTRING:
bytesUsed = RenderASCIIString ( buffer );
break;
case ID3FTY_UNICODESTRING:
bytesUsed = RenderUnicodeString ( buffer );
break;
default:
ID3_THROW ( ID3E_UnknownFieldType );
break;
}
return bytesUsed;
}
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