| // $Id: header.cpp,v 1.11 2002/07/31 13:20:49 t1mpy Exp $ |
| |
| // id3lib: a C++ library for creating and manipulating id3v1/v2 tags |
| // Copyright 1999, 2000 Scott Thomas Haug |
| // Copyright 2002 Thijmen Klok (thijmen@id3lib.org) |
| |
| // This library is free software; you can redistribute it and/or modify it |
| // under the terms of the GNU Library General Public License as published by |
| // the Free Software Foundation; either version 2 of the License, or (at your |
| // option) any later version. |
| // |
| // This library is distributed in the hope that it will be useful, but WITHOUT |
| // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| // FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public |
| // License for more details. |
| // |
| // You should have received a copy of the GNU Library General Public License |
| // along with this library; if not, write to the Free Software Foundation, |
| // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| |
| // The id3lib authors encourage improvements and optimisations to be sent to |
| // the id3lib coordinator. Please see the README file for details on where to |
| // send such submissions. See the AUTHORS file for a list of people who have |
| // contributed to id3lib. See the ChangeLog file for a list of changes to |
| // id3lib. These files are distributed with id3lib at |
| // http://download.sourceforge.net/id3lib/ |
| |
| #include "header.h" |
| |
| #if defined HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| |
| bool ID3_Header::SetSpec(ID3_V2Spec spec) |
| { |
| static ID3_Header::Info _spec_info[] = |
| { |
| // Warning, EXT SIZE are minimum sizes, they can be bigger |
| // SIZEOF SIZEOF SIZEOF IS EXT EXT EXPERIM |
| // FRID FRSZ FRFL HEADER SIZE BIT |
| { 3, 3, 0, false, 0, false }, // ID3V2_2_0 |
| { 3, 3, 0, true, 8, true }, // ID3V2_2_1 |
| { 4, 4, 2, false, 10, false }, // ID3V2_3_0 |
| { 4, 4, 2, false, 6, false } // ID3V2_4_0 |
| }; |
| |
| bool changed = false; |
| if (spec < ID3V2_EARLIEST || spec > ID3V2_LATEST) |
| { |
| changed = _spec != ID3V2_UNKNOWN; |
| _spec = ID3V2_UNKNOWN; |
| _info = NULL; |
| } |
| else |
| { |
| changed = _spec != spec; |
| _spec = spec; |
| _info = &_spec_info[_spec - ID3V2_EARLIEST]; |
| } |
| _changed = _changed || changed; |
| return changed; |
| } |
| |