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Filter_Normalize.cpp
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Filter_Normalize.cpp
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///////////////////////////////////////////////////////////////////////////////
// LameXP - Audio Encoder Front-End
// Copyright (C) 2004-2023 LoRd_MuldeR <MuldeR2@GMX.de>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU GENERAL PUBLIC LICENSE as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version; always including the non-optional
// LAMEXP GNU GENERAL PUBLIC LICENSE ADDENDUM. See "License.txt" file!
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// http://www.gnu.org/licenses/gpl-2.0.txt
///////////////////////////////////////////////////////////////////////////////
#include "Filter_Normalize.h"
//Internal
#include "Global.h"
//MUtils
#include <MUtils/Global.h>
#include <MUtils/Exception.h>
//Qt
#include <QDir>
#include <QProcess>
#include <QRegExp>
static double dbToLinear(const double &value)
{
return pow(10.0, value / 20.0);
}
NormalizeFilter::NormalizeFilter(const int &peakVolume, const bool &dnyAudNorm, const bool &channelsCoupled, const int &filterSize)
:
m_binary(lamexp_tools_lookup("sox.exe")),
m_useDynAudNorm(dnyAudNorm),
m_peakVolume(qMin(-50, qMax(-3200, peakVolume))),
m_channelsCoupled(channelsCoupled),
m_filterLength(qBound(3, filterSize + (1 - (filterSize % 2)), 301))
{
if(m_binary.isEmpty())
{
MUTILS_THROW("Error initializing SoX filter. Tool 'sox.exe' is not registred!");
}
}
NormalizeFilter::~NormalizeFilter(void)
{
}
AbstractFilter::FilterResult NormalizeFilter::apply(const QString &sourceFile, const QString &outputFile, AudioFileModel_TechInfo* /*formatInfo*/, QAtomicInt &abortFlag)
{
QProcess process;
QStringList args;
args << "-V3" << "-S";
args << "--temp" << ".";
args << QDir::toNativeSeparators(sourceFile);
args << QDir::toNativeSeparators(outputFile);
if(!m_useDynAudNorm)
{
args << "gain";
args << (m_channelsCoupled ? "-n" : "-nb");
args << QString().sprintf("%.2f", static_cast<double>(m_peakVolume) / 100.0);
}
else
{
args << "dynaudnorm";
args << "-p" << QString().sprintf("%.2f", qBound(0.1, dbToLinear(static_cast<double>(m_peakVolume) / 100.0), 1.0));
args << "-g" << QString().sprintf("%d", m_filterLength);
if(!m_channelsCoupled)
{
args << "-n";
}
}
if(!startProcess(process, m_binary, args, QFileInfo(outputFile).canonicalPath()))
{
return AbstractFilter::FILTER_FAILURE;
}
int prevProgress = -1;
QRegExp regExp("In:(\\d+)(\\.\\d+)*%");
const result_t result = awaitProcess(process, abortFlag, [this, &prevProgress, ®Exp](const QString &text)
{
if (regExp.lastIndexIn(text) >= 0)
{
qint32 newProgress;
if (MUtils::regexp_parse_int32(regExp, newProgress))
{
if (newProgress > prevProgress)
{
emit statusUpdated(newProgress);
prevProgress = NEXT_PROGRESS(newProgress);
}
}
return true;
}
return false;
});
if (result != RESULT_SUCCESS)
{
return AbstractFilter::FILTER_FAILURE;
}
return AbstractFilter::FILTER_SUCCESS;
}