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/***************************************************************************
copyright : (C) 2013 by Stephen F. Booth
email : me@sbooth.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/ *
***************************************************************************/
#include <tstring.h>
#include <tdebug.h>
#include "dsfproperties.h"
using namespace TagLib;
class DSF::Properties::PropertiesPrivate
{
public:
PropertiesPrivate() :
formatVersion(0),
formatID(0),
channelType(0),
channelNum(0),
samplingFrequency(0),
bitsPerSample(0),
sampleCount(0),
blockSizePerChannel(0),
bitrate(0),
length(0)
{
}
// Nomenclature is from DSF file format specification
unsigned int formatVersion;
unsigned int formatID;
unsigned int channelType;
unsigned int channelNum;
unsigned int samplingFrequency;
unsigned int bitsPerSample;
long long sampleCount;
unsigned int blockSizePerChannel;
// Computed
unsigned int bitrate;
unsigned int length;
};
////////////////////////////////////////////////////////////////////////////////
// public members
////////////////////////////////////////////////////////////////////////////////
DSF::Properties::Properties(const ByteVector &data, ReadStyle style) : TagLib::AudioProperties(style)
{
d = new PropertiesPrivate;
read(data);
}
DSF::Properties::~Properties()
{
delete d;
}
int DSF::Properties::length() const
{
return lengthInSeconds();
}
int DSF::Properties::lengthInSeconds() const
{
return d->length / 1000;
}
int DSF::Properties::lengthInMilliseconds() const
{
return d->length;
}
int DSF::Properties::bitrate() const
{
return d->bitrate;
}
int DSF::Properties::sampleRate() const
{
return d->samplingFrequency;
}
int DSF::Properties::channels() const
{
return d->channelNum;
}
// DSF specific
int DSF::Properties::formatVersion() const
{
return d->formatVersion;
}
int DSF::Properties::formatID() const
{
return d->formatID;
}
int DSF::Properties::channelType() const
{
return d->channelType;
}
int DSF::Properties::bitsPerSample() const
{
return d->bitsPerSample;
}
long long DSF::Properties::sampleCount() const
{
return d->sampleCount;
}
int DSF::Properties::blockSizePerChannel() const
{
return d->blockSizePerChannel;
}
////////////////////////////////////////////////////////////////////////////////
// private members
////////////////////////////////////////////////////////////////////////////////
void DSF::Properties::read(const ByteVector &data)
{
d->formatVersion = data.toUInt(0U,false);
d->formatID = data.toUInt(4U,false);
d->channelType = data.toUInt(8U,false);
d->channelNum = data.toUInt(12U,false);
d->samplingFrequency = data.toUInt(16U,false);
d->bitsPerSample = data.toUInt(20U,false);
d->sampleCount = data.toLongLong(24U,false);
d->blockSizePerChannel = data.toUInt(32U,false);
d->bitrate
= static_cast<unsigned int>((d->samplingFrequency * d->bitsPerSample * d->channelNum) / 1000.0 + 0.5);
d->length
= d->samplingFrequency > 0 ? static_cast<unsigned int>(d->sampleCount * 1000.0 / d->samplingFrequency + 0.5) : 0;
}
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