mp4properties.h

来自「Amarok是一款在LINUX或其他类UNIX操作系统中运行的音频播放器软件。 」· C头文件 代码 · 共 87 行

/***************************************************************************
copyright            : (C) 2005 by Andy Leadbetter
email                : [e-mail]
 ***************************************************************************/

/***************************************************************************
 *   This library is free software; you can redistribute it and/or modify  *
 *   it  under the terms of the GNU Lesser General Public License version  *
 *   2.1 as published by the Free Software Foundation.                     *
 *                                                                         *
 *   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     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the Free Software   *
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,            *
 *   MA  02110-1301  USA                                                   *
 ***************************************************************************/

#ifndef TAGLIB_MP4PROPERTIES_H
#define TAGLIB_MP4PROPERTIES_H

#include <audioproperties.h>
#include <tstring.h>
#include <mp4.h>
// mp4.h drags in mp4_config.h that defines these
// get rid of them so they don't conflict with our config.h
#undef VERSION
#undef PACKAGE

namespace TagLib {

    namespace MP4 {

        class File;

        /*!
         * This reads the data from a MP4 stream to support the
         * AudioProperties API.
         */

        class Properties : public AudioProperties
        {
            public:
                /*!
                 * Initialize this structure
                 */
                Properties(Properties::ReadStyle style);

                /*!
                 * Destroys this MP4 Properties instance.
                 */
                virtual ~Properties();

                // Reimplementations.

                virtual int length() const;
                virtual int bitrate() const;
                virtual int sampleRate() const;
                virtual int channels() const;

                void readMP4Properties(MP4FileHandle mp4File);


            private:
                void readAudioTrackProperties(MP4FileHandle mp4File, MP4TrackId trackId );
                friend class MP4::File;

                int m_length;
                int m_bitrate;
                int m_sampleRate;
                int m_channels;

                Properties(const Properties &);
                Properties &operator=(const Properties &);

                void read();
        };

    }

}

#endif