137 lines
4.1 KiB
C++
137 lines
4.1 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// LameXP - Audio Encoder Front-End
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// Copyright (C) 2004-2020 LoRd_MuldeR <MuldeR2@GMX.de>
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU GENERAL PUBLIC LICENSE as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version; always including the non-optional
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// LAMEXP GNU GENERAL PUBLIC LICENSE ADDENDUM. See "License.txt" file!
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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//
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// http://www.gnu.org/licenses/gpl-2.0.txt
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///////////////////////////////////////////////////////////////////////////////
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#include "Filter_Downmix.h"
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//Internal
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#include "Global.h"
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#include "Tool_WaveProperties.h"
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#include "Model_AudioFile.h"
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//MUtils
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#include <MUtils/Exception.h>
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//Qt
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#include <QDir>
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#include <QProcess>
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#include <QRegExp>
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#define IS_VALID(X) (((X) != 0U) && ((X) != UINT_MAX))
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DownmixFilter::DownmixFilter(void)
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:
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m_binary(lamexp_tools_lookup("sox.exe"))
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{
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if(m_binary.isEmpty())
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{
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MUTILS_THROW("Error initializing SoX filter. Tool 'sox.exe' is not registred!");
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}
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}
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DownmixFilter::~DownmixFilter(void)
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{
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}
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AbstractFilter::FilterResult DownmixFilter::apply(const QString &sourceFile, const QString &outputFile, AudioFileModel_TechInfo *const formatInfo, QAtomicInt &abortFlag)
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{
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unsigned int channels = formatInfo->audioChannels();
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emit messageLogged(QString().sprintf("--> Number of channels is: %d\n", channels));
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if(IS_VALID(channels) && (channels <= 2))
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{
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messageLogged("Skipping downmix!");
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qDebug("Dowmmix not required/possible for Mono or Stereo input, skipping!");
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return AbstractFilter::FILTER_SKIPPED;
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}
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QProcess process;
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QStringList args;
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args << "-V3" << "-S";
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args << "--guard" << "--temp" << ".";
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args << QDir::toNativeSeparators(sourceFile);
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args << QDir::toNativeSeparators(outputFile);
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switch(channels)
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{
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case 3: //3.0 (L/R/C)
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args << "remix" << "1v0.66,3v0.34" << "2v0.66,3v0.34";
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break;
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case 4: //3.1 (L/R/C/LFE)
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args << "remix" << "1v0.5,3v0.25,4v0.25" << "2v0.5,3v0.25,4v0.25";
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break;
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case 5: //5.0 (L/R/C/BL/BR)
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args << "remix" << "1v0.5,3v0.25,4v0.25" << "2v0.5,3v0.25,5v0.25";
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break;
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case 6: //5.1 (L/R/C/LFE/BL/BR)
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args << "remix" << "1v0.4,3v0.2,4v0.2,5v0.2" << "2v0.4,3v0.2,4v0.2,6v0.2";
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break;
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case 7: //7.0 (L/R/C/BL/BR/SL/SR)
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args << "remix" << "1v0.4,3v0.2,4v0.2,6v0.2" << "2v0.4,3v0.2,5v0.2,7v0.2";
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break;
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case 8: //7.1 (L/R/C/LFE/BL/BR/SL/SR)
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args << "remix" << "1v0.36,3v0.16,4v0.16,5v0.16,7v0.16" << "2v0.36,3v0.16,4v0.16,6v0.16,8v0.16";
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break;
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case 9: //8.1 (L/R/C/LFE/BL/BR/SL/SR/BC)
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args << "remix" << "1v0.308,3v0.154,4v0.154,5v0.154,7v0.154,9v0.076" << "2v0.308,3v0.154,4v0.154,6v0.154,8v0.154,9v0.076";
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break;
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default: //Unknown
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qWarning("Downmixer: Unknown channel configuration!");
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args << "channels" << QString::number(2);
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break;
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}
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if(!startProcess(process, m_binary, args, QFileInfo(outputFile).canonicalPath()))
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{
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return AbstractFilter::FILTER_FAILURE;
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}
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int prevProgress = -1;
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QRegExp regExp("In:(\\d+)(\\.\\d+)*%");
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const result_t result = awaitProcess(process, abortFlag, [this, &prevProgress, ®Exp](const QString &text)
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{
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if (regExp.lastIndexIn(text) >= 0)
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{
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qint32 newProgress;
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if (MUtils::regexp_parse_int32(regExp, newProgress))
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{
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if (newProgress > prevProgress)
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{
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emit statusUpdated(newProgress);
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prevProgress = NEXT_PROGRESS(newProgress);
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}
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}
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return true;
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}
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return false;
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});
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if (result != RESULT_SUCCESS)
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{
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return AbstractFilter::FILTER_FAILURE;
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}
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formatInfo->setAudioChannels(2);
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return AbstractFilter::FILTER_SUCCESS;
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}
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