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Add AudioProperties::lengthInSeconds() and lengthInMilliseconds() functions to emulate virtual abstract functions.

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This commit is contained in:
Tsuda Kageyu 2015-08-01 02:23:18 +09:00
parent ce02910c6b
commit 03ec83ecca
2 changed files with 131 additions and 1 deletions
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115
taglib/audioproperties.cpp
View File

@ -23,6 +23,22 @@
* http://www.mozilla.org/MPL/ *
***************************************************************************/
#include <tbytevector.h>
#include "aiffproperties.h"
#include "apeproperties.h"
#include "asfproperties.h"
#include "flacproperties.h"
#include "mp4properties.h"
#include "mpcproperties.h"
#include "mpegproperties.h"
#include "opusproperties.h"
#include "speexproperties.h"
#include "trueaudioproperties.h"
#include "vorbisproperties.h"
#include "wavproperties.h"
#include "wavpackproperties.h"
#include "audioproperties.h"
using namespace TagLib;
@ -41,11 +57,108 @@ AudioProperties::~AudioProperties()
}
int TagLib::AudioProperties::lengthInSeconds() const
{
// This is an ugly workaround but we can't add a virtual function.
// Should be virtual in taglib2.
if(dynamic_cast<const APE::Properties*>(this))
return dynamic_cast<const APE::Properties*>(this)->lengthInSeconds();
else if(dynamic_cast<const ASF::Properties*>(this))
return dynamic_cast<const ASF::Properties*>(this)->lengthInSeconds();
else if(dynamic_cast<const FLAC::Properties*>(this))
return dynamic_cast<const FLAC::Properties*>(this)->lengthInSeconds();
else if(dynamic_cast<const MP4::Properties*>(this))
return dynamic_cast<const MP4::Properties*>(this)->lengthInSeconds();
else if(dynamic_cast<const MPC::Properties*>(this))
return dynamic_cast<const MPC::Properties*>(this)->lengthInSeconds();
else if(dynamic_cast<const MPEG::Properties*>(this))
return dynamic_cast<const MPEG::Properties*>(this)->lengthInSeconds();
else if(dynamic_cast<const Ogg::Opus::Properties*>(this))
return dynamic_cast<const Ogg::Opus::Properties*>(this)->lengthInSeconds();
else if(dynamic_cast<const Ogg::Speex::Properties*>(this))
return dynamic_cast<const Ogg::Speex::Properties*>(this)->lengthInSeconds();
else if(dynamic_cast<const TrueAudio::Properties*>(this))
return dynamic_cast<const TrueAudio::Properties*>(this)->lengthInSeconds();
else if (dynamic_cast<const RIFF::AIFF::Properties*>(this))
return dynamic_cast<const RIFF::AIFF::Properties*>(this)->lengthInSeconds();
else if(dynamic_cast<const RIFF::WAV::Properties*>(this))
return dynamic_cast<const RIFF::WAV::Properties*>(this)->lengthInSeconds();
else if(dynamic_cast<const Vorbis::Properties*>(this))
return dynamic_cast<const Vorbis::Properties*>(this)->lengthInSeconds();
else if(dynamic_cast<const WavPack::Properties*>(this))
return dynamic_cast<const WavPack::Properties*>(this)->lengthInSeconds();
else
return 0;
}
int TagLib::AudioProperties::lengthInMilliseconds() const
{
// This is an ugly workaround but we can't add a virtual function.
// Should be virtual in taglib2.
if(dynamic_cast<const APE::Properties*>(this))
return dynamic_cast<const APE::Properties*>(this)->lengthInMilliseconds();
else if(dynamic_cast<const ASF::Properties*>(this))
return dynamic_cast<const ASF::Properties*>(this)->lengthInMilliseconds();
else if(dynamic_cast<const FLAC::Properties*>(this))
return dynamic_cast<const FLAC::Properties*>(this)->lengthInMilliseconds();
else if(dynamic_cast<const MP4::Properties*>(this))
return dynamic_cast<const MP4::Properties*>(this)->lengthInMilliseconds();
else if(dynamic_cast<const MPC::Properties*>(this))
return dynamic_cast<const MPC::Properties*>(this)->lengthInMilliseconds();
else if(dynamic_cast<const MPEG::Properties*>(this))
return dynamic_cast<const MPEG::Properties*>(this)->lengthInMilliseconds();
else if(dynamic_cast<const Ogg::Opus::Properties*>(this))
return dynamic_cast<const Ogg::Opus::Properties*>(this)->lengthInMilliseconds();
else if(dynamic_cast<const Ogg::Speex::Properties*>(this))
return dynamic_cast<const Ogg::Speex::Properties*>(this)->lengthInMilliseconds();
else if(dynamic_cast<const TrueAudio::Properties*>(this))
return dynamic_cast<const TrueAudio::Properties*>(this)->lengthInMilliseconds();
else if(dynamic_cast<const RIFF::AIFF::Properties*>(this))
return dynamic_cast<const RIFF::AIFF::Properties*>(this)->lengthInMilliseconds();
else if(dynamic_cast<const RIFF::WAV::Properties*>(this))
return dynamic_cast<const RIFF::WAV::Properties*>(this)->lengthInMilliseconds();
else if(dynamic_cast<const Vorbis::Properties*>(this))
return dynamic_cast<const Vorbis::Properties*>(this)->lengthInMilliseconds();
else if(dynamic_cast<const WavPack::Properties*>(this))
return dynamic_cast<const WavPack::Properties*>(this)->lengthInMilliseconds();
else
return 0;
}
////////////////////////////////////////////////////////////////////////////////
// protected methods
////////////////////////////////////////////////////////////////////////////////
AudioProperties::AudioProperties(ReadStyle)
AudioProperties::AudioProperties(ReadStyle) :
d(0)
{
}

17
taglib/audioproperties.h
View File

@ -69,6 +69,23 @@ namespace TagLib {
*/
virtual int length() const = 0;
/*!
* 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 most appropriate bit rate for the file in kb/s. For constant
* bitrate formats this is simply the bitrate of the file. For variable