159 lines
5.0 KiB
C++
159 lines
5.0 KiB
C++
/***************************************************************************
|
|
copyright : (C) 2004 by Allan Sandfeld Jensen
|
|
email : kde@carewolf.org
|
|
***************************************************************************/
|
|
|
|
/***************************************************************************
|
|
* 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 *
|
|
* *
|
|
* Alternatively, this file is available under the Mozilla Public *
|
|
* License Version 1.1. You may obtain a copy of the License at *
|
|
* http://www.mozilla.org/MPL/ *
|
|
***************************************************************************/
|
|
|
|
#ifndef TAGLIB_MPCPROPERTIES_H
|
|
#define TAGLIB_MPCPROPERTIES_H
|
|
|
|
#include "taglib_export.h"
|
|
#include "audioproperties.h"
|
|
|
|
namespace TagLib {
|
|
|
|
namespace MPC {
|
|
|
|
class File;
|
|
|
|
static const unsigned int HeaderSize = 8 * 7;
|
|
|
|
//! An implementation of audio property reading for MPC
|
|
|
|
/*!
|
|
* This reads the data from an MPC stream found in the AudioProperties
|
|
* API.
|
|
*/
|
|
|
|
class TAGLIB_EXPORT Properties : public AudioProperties
|
|
{
|
|
public:
|
|
/*!
|
|
* Create an instance of MPC::Properties with the data read from the
|
|
* ByteVector \a data.
|
|
*
|
|
* This constructor is deprecated. It only works for MPC version up to 7.
|
|
*/
|
|
Properties(const ByteVector &data, long streamLength, ReadStyle style = Average);
|
|
|
|
/*!
|
|
* Create an instance of MPC::Properties with the data read directly
|
|
* from a MPC::File.
|
|
*/
|
|
Properties(File *file, long streamLength, ReadStyle style = Average);
|
|
|
|
/*!
|
|
* Destroys this MPC::Properties instance.
|
|
*/
|
|
virtual ~Properties();
|
|
|
|
/*!
|
|
* Returns the length of the file in seconds. The length is rounded down to
|
|
* the nearest whole second.
|
|
*
|
|
* \note This method is just an alias of lengthInSeconds().
|
|
*
|
|
* \deprecated
|
|
*/
|
|
TAGLIB_DEPRECATED virtual int length() const;
|
|
|
|
/*!
|
|
* Returns the length of the file in seconds. The length is rounded down to
|
|
* the nearest whole second.
|
|
*
|
|
* \see lengthInMilliseconds()
|
|
*/
|
|
// BIC: make virtual
|
|
int lengthInSeconds() const;
|
|
|
|
/*!
|
|
* Returns the length of the file in milliseconds.
|
|
*
|
|
* \see lengthInSeconds()
|
|
*/
|
|
// BIC: make virtual
|
|
int lengthInMilliseconds() const;
|
|
|
|
/*!
|
|
* Returns the average bit rate of the file in kb/s.
|
|
*/
|
|
virtual int bitrate() const;
|
|
|
|
/*!
|
|
* Returns the sample rate in Hz.
|
|
*/
|
|
virtual int sampleRate() const;
|
|
|
|
/*!
|
|
* Returns the number of audio channels.
|
|
*/
|
|
virtual int channels() const;
|
|
|
|
/*!
|
|
* Returns the version of the bitstream (SV4-SV8)
|
|
*/
|
|
int mpcVersion() const;
|
|
|
|
unsigned int totalFrames() const;
|
|
unsigned int sampleFrames() const;
|
|
|
|
/*!
|
|
* Returns the track gain as an integer value,
|
|
* to convert to dB: trackGain in dB = 64.82 - (trackGain / 256)
|
|
*/
|
|
int trackGain() const;
|
|
|
|
/*!
|
|
* Returns the track peak as an integer value,
|
|
* to convert to dB: trackPeak in dB = trackPeak / 256
|
|
* to convert to floating [-1..1]: trackPeak = 10^(trackPeak / 256 / 20)/32768
|
|
*/
|
|
int trackPeak() const;
|
|
|
|
/*!
|
|
* Returns the album gain as an integer value,
|
|
* to convert to dB: albumGain in dB = 64.82 - (albumGain / 256)
|
|
*/
|
|
int albumGain() const;
|
|
|
|
/*!
|
|
* Returns the album peak as an integer value,
|
|
* to convert to dB: albumPeak in dB = albumPeak / 256
|
|
* to convert to floating [-1..1]: albumPeak = 10^(albumPeak / 256 / 20)/32768
|
|
*/
|
|
int albumPeak() const;
|
|
|
|
private:
|
|
Properties(const Properties &);
|
|
Properties &operator=(const Properties &);
|
|
|
|
void readSV7(const ByteVector &data, long streamLength);
|
|
void readSV8(File *file, long streamLength);
|
|
|
|
class PropertiesPrivate;
|
|
PropertiesPrivate *d;
|
|
};
|
|
}
|
|
}
|
|
|
|
#endif
|