mpegheader.h

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00001 /***************************************************************************
00002     copyright            : (C) 2002 - 2008 by Scott Wheeler
00003     email                : wheeler@kde.org
00004  ***************************************************************************/
00005 
00006 /***************************************************************************
00007  *   This library is free software; you can redistribute it and/or modify  *
00008  *   it under the terms of the GNU Lesser General Public License version   *
00009  *   2.1 as published by the Free Software Foundation.                     *
00010  *                                                                         *
00011  *   This library is distributed in the hope that it will be useful, but   *
00012  *   WITHOUT ANY WARRANTY; without even the implied warranty of            *
00013  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
00014  *   Lesser General Public License for more details.                       *
00015  *                                                                         *
00016  *   You should have received a copy of the GNU Lesser General Public      *
00017  *   License along with this library; if not, write to the Free Software   *
00018  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
00019  *   USA                                                                   *
00020  *                                                                         *
00021  *   Alternatively, this file is available under the Mozilla Public        *
00022  *   License Version 1.1.  You may obtain a copy of the License at         *
00023  *   http://www.mozilla.org/MPL/                                           *
00024  ***************************************************************************/
00025 
00026 #ifndef TAGLIB_MPEGHEADER_H
00027 #define TAGLIB_MPEGHEADER_H
00028 
00029 #include "taglib_export.h"
00030 
00031 namespace TagLib {
00032 
00033   class ByteVector;
00034 
00035   namespace MPEG {
00036 
00038 
00046     class TAGLIB_EXPORT Header
00047     {
00048     public:
00052       Header(const ByteVector &data);
00053 
00057       Header(const Header &h);
00058 
00062       virtual ~Header();
00063 
00068       bool isValid() const;
00069 
00073       enum Version {
00075         Version1 = 0,
00077         Version2 = 1,
00079         Version2_5 = 2
00080       };
00081 
00085       Version version() const;
00086 
00090       int layer() const;
00091 
00095       bool protectionEnabled() const;
00096 
00100       int bitrate() const;
00101 
00105       int sampleRate() const;
00106 
00110       bool isPadded() const;
00111 
00116       enum ChannelMode {
00118         Stereo        = 0,
00120         JointStereo   = 1,
00122         DualChannel   = 2,
00124         SingleChannel = 3
00125       };
00126 
00130       ChannelMode channelMode() const;
00131 
00135       bool isCopyrighted() const;
00136 
00140       bool isOriginal() const;
00141 
00145       int frameLength() const;
00146 
00150       int samplesPerFrame() const;
00151 
00155       Header &operator=(const Header &h);
00156 
00157     private:
00158       void parse(const ByteVector &data);
00159 
00160       class HeaderPrivate;
00161       HeaderPrivate *d;
00162     };
00163   }
00164 }
00165 
00166 #endif