142 lines
4.1 KiB
C++
142 lines
4.1 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// LameXP - Audio Encoder Front-End
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// Copyright (C) 2004-2022 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_Resample.h"
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//Internal
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#include "Global.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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static __inline int multipleOf(int value, int base)
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{
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return qRound(static_cast<double>(value) / static_cast<double>(base)) * base;
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}
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ResampleFilter::ResampleFilter(int samplingRate, int bitDepth)
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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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m_samplingRate = (samplingRate > 0) ? qBound(8000, samplingRate, 192000) : 0;
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m_bitDepth = (bitDepth > 0) ? qBound(8, multipleOf(bitDepth, 8), 32) : 0;
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if((m_samplingRate == 0) && (m_bitDepth == 0))
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{
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qWarning("ResampleFilter: Nothing to do, filter will be NOP!");
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}
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}
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ResampleFilter::~ResampleFilter(void)
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{
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}
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AbstractFilter::FilterResult ResampleFilter::apply(const QString &sourceFile, const QString &outputFile, AudioFileModel_TechInfo *const formatInfo, QAtomicInt &abortFlag)
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{
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QProcess process;
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QStringList args;
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if((m_samplingRate == static_cast<int>(formatInfo->audioSamplerate())) && (m_bitDepth == static_cast<int>(formatInfo->audioBitdepth())))
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{
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messageLogged("Skipping resample filter!");
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qDebug("Resampling filter target samplerate/bitdepth is equals to the format of the input file, skipping!");
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return AbstractFilter::FILTER_SKIPPED;
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}
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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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if(m_bitDepth)
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{
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args << "-b" << QString::number(m_bitDepth);
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}
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args << QDir::toNativeSeparators(outputFile);
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if(m_samplingRate)
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{
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args << "rate";
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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)
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args << ((m_samplingRate > 40000) ? "-L" : "-I"); //if resampling to < 40k, use intermediate phase (-I), otherwise use linear phase (-L)
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args << QString::number(m_samplingRate);
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}
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if((m_bitDepth || m_samplingRate) && (m_bitDepth <= 16))
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{
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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
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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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if (m_samplingRate)
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{
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formatInfo->setAudioSamplerate(m_samplingRate);
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}
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if (m_bitDepth)
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{
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formatInfo->setAudioBitdepth(m_bitDepth);
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}
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return AbstractFilter::FILTER_SUCCESS;
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}
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