id3lib 3.8.3
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00001 // $Id: spec.cpp,v 1.2 2002/07/31 13:20:49 t1mpy Exp $ 00002 00003 // id3lib: a C++ library for creating and manipulating id3v1/v2 tags 00004 // Copyright 1999, 2000 Scott Thomas Haug 00005 // Copyright 2002 Thijmen Klok (thijmen@id3lib.org) 00006 00007 // This library is free software; you can redistribute it and/or modify it 00008 // under the terms of the GNU Library General Public License as published by 00009 // the Free Software Foundation; either version 2 of the License, or (at your 00010 // option) any later version. 00011 // 00012 // This library is distributed in the hope that it will be useful, but WITHOUT 00013 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 00014 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public 00015 // License for more details. 00016 // 00017 // You should have received a copy of the GNU Library General Public License 00018 // along with this library; if not, write to the Free Software Foundation, 00019 // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00020 00021 // The id3lib authors encourage improvements and optimisations to be sent to 00022 // the id3lib coordinator. Please see the README file for details on where to 00023 // send such submissions. See the AUTHORS file for a list of people who have 00024 // contributed to id3lib. See the ChangeLog file for a list of changes to 00025 // id3lib. These files are distributed with id3lib at 00026 // http://download.sourceforge.net/id3lib/ 00027 00028 #if defined HAVE_CONFIG_H 00029 #include <config.h> 00030 #endif 00031 00032 #include "spec.h" 00033 00034 ID3_V2Spec ID3_VerRevToV2Spec(uchar ver, uchar rev) 00035 { 00036 ID3_V2Spec spec = ID3V2_UNKNOWN; 00037 if (2 == ver) 00038 { 00039 if (0 == rev) 00040 { 00041 spec = ID3V2_2_0; 00042 } 00043 else if (1 == rev) 00044 { 00045 spec = ID3V2_2_1; 00046 } 00047 } 00048 else if (3 == ver) 00049 { 00050 if (0 == rev) 00051 { 00052 spec = ID3V2_3_0; 00053 } 00054 } 00055 else if (4 == ver) 00056 { 00057 if (0 == rev) 00058 { 00059 spec = ID3V2_4_0; 00060 } 00061 } 00062 00063 return spec; 00064 } 00065 00066 uchar ID3_V2SpecToVer(ID3_V2Spec spec) 00067 { 00068 uchar ver = 0; 00069 switch (spec) 00070 { 00071 case ID3V2_2_0: 00072 case ID3V2_2_1: 00073 ver = 2; 00074 break; 00075 case ID3V2_3_0: 00076 ver = 3; 00077 break; 00078 case ID3V2_4_0: 00079 ver = 4; 00080 break; 00081 default: 00082 break; 00083 } 00084 return ver; 00085 } 00086 00087 uchar ID3_V2SpecToRev(ID3_V2Spec spec) 00088 { 00089 uchar rev = 0; 00090 switch (spec) 00091 { 00092 case ID3V2_4_0: 00093 rev = 0; 00094 break; 00095 case ID3V2_3_0: 00096 rev = 0; 00097 break; 00098 case ID3V2_2_1: 00099 rev = 1; 00100 break; 00101 case ID3V2_2_0: 00102 rev = 0; 00103 break; 00104 default: 00105 break; 00106 } 00107 return rev; 00108 } 00109