1 /***************************************************************************
2 copyright : (C) 2002 - 2008 by Scott Wheeler
3 email : wheeler@kde.org
4 ***************************************************************************/
6 /***************************************************************************
7 * This library is free software; you can redistribute it and/or modify *
8 * it under the terms of the GNU Lesser General Public License version *
9 * 2.1 as published by the Free Software Foundation. *
11 * This library is distributed in the hope that it will be useful, but *
12 * WITHOUT ANY WARRANTY; without even the implied warranty of *
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
14 * Lesser General Public License for more details. *
16 * You should have received a copy of the GNU Lesser General Public *
17 * License along with this library; if not, write to the Free Software *
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
21 * Alternatively, this file is available under the Mozilla Public *
22 * License Version 1.1. You may obtain a copy of the License at *
23 * http://www.mozilla.org/MPL/ *
24 ***************************************************************************/
26 #ifndef TAGLIB_MPEGPROPERTIES_H
27 #define TAGLIB_MPEGPROPERTIES_H
29 #include "taglib_export.h"
30 #include "audioproperties.h"
32 #include "mpegheader.h"
41 //! An implementation of audio property reading for MP3
44 * This reads the data from an MPEG Layer III stream found in the
45 * AudioProperties API.
48 class TAGLIB_EXPORT Properties : public AudioProperties
52 * Create an instance of MPEG::Properties with the data read from the
55 Properties(File *file, ReadStyle style = Average);
58 * Destroys this MPEG Properties instance.
60 virtual ~Properties();
64 virtual int length() const;
65 virtual int bitrate() const;
66 virtual int sampleRate() const;
67 virtual int channels() const;
70 * Returns a pointer to the XingHeader if one exists or null if no
71 * XingHeader was found.
74 const XingHeader *xingHeader() const;
77 * Returns the MPEG Version of the file.
79 Header::Version version() const;
82 * Returns the layer version. This will be between the values 1-3.
87 * Returns true if the MPEG protection bit is enabled.
89 bool protectionEnabled() const;
92 * Returns the channel mode for this frame.
94 Header::ChannelMode channelMode() const;
97 * Returns true if the copyrighted bit is set.
99 bool isCopyrighted() const;
102 * Returns true if the "original" bit is set.
104 bool isOriginal() const;
107 Properties(const Properties &);
108 Properties &operator=(const Properties &);
112 class PropertiesPrivate;
113 PropertiesPrivate *d;