| // -*- C++ -*- |
| // $Id: header.h,v 1.3 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/ |
| |
| #ifndef _ID3LIB_HEADER_H_ |
| #define _ID3LIB_HEADER_H_ |
| |
| #include "id3/globals.h" //has <stdlib.h> "id3/sized_types.h" |
| #include "flags.h" |
| |
| class ID3_Reader; |
| class ID3_Writer; |
| |
| class ID3_Header |
| { |
| public: |
| struct Info |
| { |
| uchar frame_bytes_id; |
| uchar frame_bytes_size; |
| uchar frame_bytes_flags; |
| bool is_extended; |
| size_t extended_bytes; //including the extended header, so everything! |
| bool is_experimental; |
| }; |
| |
| ID3_Header() |
| : _spec (ID3V2_UNKNOWN), |
| _data_size (0), |
| _changed (false) |
| { |
| this->Clear(); |
| _changed = false; |
| } |
| virtual ~ID3_Header() { ; } |
| |
| virtual bool SetSpec(ID3_V2Spec); |
| /* */ ID3_V2Spec GetSpec() const { return _spec; } |
| |
| /* */ bool SetDataSize(size_t size) |
| { |
| bool changed = size != _data_size; |
| _changed = _changed || changed; |
| _data_size = size; |
| return changed; |
| } |
| /* */ size_t GetDataSize() const { return _data_size; } |
| |
| virtual bool Clear() |
| { |
| bool changed = this->SetDataSize(0); |
| if (this->GetSpec() == ID3V2_UNKNOWN) |
| { |
| this->SetSpec(ID3V2_LATEST); |
| changed = true; |
| } |
| changed = _flags.clear() || changed; |
| _changed = changed || _changed; |
| return changed; |
| } |
| virtual size_t Size() const = 0; |
| |
| virtual void Render(ID3_Writer&) const = 0; |
| virtual bool Parse(ID3_Reader&) = 0; |
| |
| ID3_Header &operator=( const ID3_Header &rhs) |
| { |
| if (this != &rhs) |
| { |
| this->SetSpec(rhs.GetSpec()); |
| this->SetDataSize(rhs.GetSpec()); |
| this->_flags = rhs._flags; |
| } |
| return *this; |
| } |
| |
| protected: |
| ID3_V2Spec _spec; // which version of the spec |
| size_t _data_size; // how big is the data? |
| ID3_Flags _flags; // header flags |
| Info* _info; // header info w.r.t. id3v2 spec |
| bool _changed; // has the header changed since parsing |
| } |
| ; |
| |
| #endif /* _ID3LIB_HEADER_H */ |