Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

167 lines (140 sloc) 4.84 kb
///////////////////////////////////////////////////////////////////////////////
// LameXP - Audio Encoder Front-End
// Copyright (C) 2004-2015 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, but always including the *additional*
// restrictions defined in the "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_Resample.h"
//Internal
#include "Global.h"
#include "Model_AudioFile.h"
//MUtils
#include <MUtils/Exception.h>
//Qt
#include <QDir>
#include <QProcess>
#include <QRegExp>
static __inline int multipleOf(int value, int base)
{
return qRound(static_cast<double>(value) / static_cast<double>(base)) * base;
}
ResampleFilter::ResampleFilter(int samplingRate, int bitDepth)
:
m_binary(lamexp_tools_lookup("sox.exe"))
{
if(m_binary.isEmpty())
{
MUTILS_THROW("Error initializing SoX filter. Tool 'sox.exe' is not registred!");
}
m_samplingRate = (samplingRate > 0) ? qBound(8000, samplingRate, 192000) : 0;
m_bitDepth = (bitDepth > 0) ? qBound(8, multipleOf(bitDepth, 8), 32) : 0;
if((m_samplingRate == 0) && (m_bitDepth == 0))
{
qWarning("ResampleFilter: Nothing to do, filter will be NOP!");
}
}
ResampleFilter::~ResampleFilter(void)
{
}
bool ResampleFilter::apply(const QString &sourceFile, const QString &outputFile, AudioFileModel_TechInfo *formatInfo, volatile bool *abortFlag)
{
QProcess process;
QStringList args;
if((m_samplingRate == formatInfo->audioSamplerate()) && (m_bitDepth == formatInfo->audioBitdepth()))
{
messageLogged("Skipping resample filter!");
qDebug("Resampling filter target samplerate/bitdepth is equals to the format of the input file, skipping!");
return true;
}
process.setWorkingDirectory(QFileInfo(outputFile).canonicalPath());
args << "-V3" << "-S";
args << "--guard" << "--temp" << ".";
args << QDir::toNativeSeparators(sourceFile);
if(m_bitDepth)
{
args << "-b" << QString::number(m_bitDepth);
}
args << QDir::toNativeSeparators(outputFile);
if(m_samplingRate)
{
args << "rate";
args << ((m_bitDepth > 16) ? "-v" : "-h"); //if resampling at/to > 16 bit depth (i.e. most commonly 24-bit), use VHQ (-v), otherwise, use HQ (-h)
args << ((m_samplingRate > 40000) ? "-L" : "-I"); //if resampling to < 40k, use intermediate phase (-I), otherwise use linear phase (-L)
args << QString::number(m_samplingRate);
}
if((m_bitDepth || m_samplingRate) && (m_bitDepth <= 16))
{
args << "dither" << "-s"; //if you're mastering to 16-bit, you also need to add 'dither' (and in most cases noise-shaping) after the rate
}
if(!startProcess(process, m_binary, args))
{
return false;
}
bool bTimeout = false;
bool bAborted = false;
QRegExp regExp("In:(\\d+)(\\.\\d+)*%");
while(process.state() != QProcess::NotRunning)
{
if(*abortFlag)
{
process.kill();
bAborted = true;
emit messageLogged("\nABORTED BY USER !!!");
break;
}
process.waitForReadyRead(m_processTimeoutInterval);
if(!process.bytesAvailable() && process.state() == QProcess::Running)
{
process.kill();
qWarning("SoX process timed out <-- killing!");
emit messageLogged("\nPROCESS TIMEOUT !!!");
bTimeout = true;
break;
}
while(process.bytesAvailable() > 0)
{
QByteArray line = process.readLine();
QString text = QString::fromUtf8(line.constData()).simplified();
if(regExp.lastIndexIn(text) >= 0)
{
bool ok = false;
int progress = regExp.cap(1).toInt(&ok);
if(ok) emit statusUpdated(progress);
}
else if(!text.isEmpty())
{
emit messageLogged(text);
}
}
}
process.waitForFinished();
if(process.state() != QProcess::NotRunning)
{
process.kill();
process.waitForFinished(-1);
}
emit statusUpdated(100);
emit messageLogged(QString().sprintf("\nExited with code: 0x%04X", process.exitCode()));
if(bTimeout || bAborted || process.exitCode() != EXIT_SUCCESS || QFileInfo(outputFile).size() == 0)
{
return false;
}
if(m_samplingRate) formatInfo->setAudioSamplerate(m_samplingRate);
if(m_bitDepth) formatInfo->setAudioBitdepth(m_bitDepth);
return true;
}
Jump to Line
Something went wrong with that request. Please try again.