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/***************************************************************************
copyright : (C) 2006 by Lukáš Lalinský
email : lalinsky@gmail.com
copyright : (C) 2004 by Allan Sandfeld Jensen
email : kde@carewolf.org
(original MPC implementation)
***************************************************************************/
/***************************************************************************
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
* 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 <bitset>
#include "trueaudioproperties.h"
#include "trueaudiofile.h"
using namespace TagLib;
class TrueAudio::Properties::PropertiesPrivate
{
public:
PropertiesPrivate(const ByteVector &d, long length, ReadStyle s) :
data(d),
streamLength(length),
style(s),
version(0),
length(0),
bitrate(0),
sampleRate(0),
channels(0),
bitsPerSample(0) {}
ByteVector data;
long streamLength;
ReadStyle style;
int version;
int length;
int bitrate;
int sampleRate;
int channels;
int bitsPerSample;
};
////////////////////////////////////////////////////////////////////////////////
// public members
////////////////////////////////////////////////////////////////////////////////
TrueAudio::Properties::Properties(const ByteVector &data, long streamLength, ReadStyle style) : AudioProperties(style)
{
d = new PropertiesPrivate(data, streamLength, style);
read();
}
TrueAudio::Properties::~Properties()
{
delete d;
}
int TrueAudio::Properties::length() const
{
return d->length;
}
int TrueAudio::Properties::bitrate() const
{
return d->bitrate;
}
int TrueAudio::Properties::sampleRate() const
{
return d->sampleRate;
}
int TrueAudio::Properties::bitsPerSample() const
{
return d->bitsPerSample;
}
int TrueAudio::Properties::channels() const
{
return d->channels;
}
int TrueAudio::Properties::ttaVersion() const
{
return d->version;
}
////////////////////////////////////////////////////////////////////////////////
// private members
////////////////////////////////////////////////////////////////////////////////
void TrueAudio::Properties::read()
{
if(!d->data.startsWith("TTA"))
return;
int pos = 3;
d->version = d->data[pos] - '0';
pos += 1 + 2;
d->channels = d->data.mid(pos, 2).toShort(false);
pos += 2;
d->bitsPerSample = d->data.mid(pos, 2).toShort(false);
pos += 2;
d->sampleRate = d->data.mid(pos, 4).toUInt(false);
pos += 4;
unsigned long samples = d->data.mid(pos, 4).toUInt(false);
d->length = samples / d->sampleRate;
d->bitrate = d->length > 0 ? ((d->streamLength * 8L) / d->length) / 1000 : 0;
}
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