159 lines
3.9 KiB
C++
159 lines
3.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// LameXP - Audio Encoder Front-End
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// Copyright (C) 2004-2013 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.
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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 "Tool_Abstract.h"
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#include "Global.h"
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#include "JobObject.h"
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#include <QProcess>
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#include <QMutex>
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#include <QMutexLocker>
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#include <QLibrary>
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#include <QProcessEnvironment>
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#include <QDir>
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/*
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* Static vars
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*/
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quint64 AbstractTool::s_lastLaunchTime = 0ui64;
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QMutex AbstractTool::s_mutex_startProcess;
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JobObject *AbstractTool::s_jobObject = NULL;
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unsigned int AbstractTool::s_jobObjRefCount = 0U;
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/*
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* Const
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*/
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static const unsigned int START_DELAY = 333; //in milliseconds
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static const quint64 START_DELAY_NANO = START_DELAY * 1000 * 10; //in 100-nanosecond intervals
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/*
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* Constructor
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*/
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AbstractTool::AbstractTool(void)
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{
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QMutexLocker lock(&s_mutex_startProcess);
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if(s_jobObjRefCount < 1U)
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{
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s_jobObject = new JobObject();
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s_jobObjRefCount = 1U;
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}
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else
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{
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s_jobObjRefCount++;
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}
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m_firstLaunch = true;
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}
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/*
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* Destructor
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*/
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AbstractTool::~AbstractTool(void)
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{
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QMutexLocker lock(&s_mutex_startProcess);
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if(s_jobObjRefCount >= 1U)
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{
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s_jobObjRefCount--;
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if(s_jobObjRefCount < 1U)
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{
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LAMEXP_DELETE(s_jobObject);
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}
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}
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}
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/*
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* Initialize and launch process object
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*/
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bool AbstractTool::startProcess(QProcess &process, const QString &program, const QStringList &args)
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{
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QMutexLocker lock(&s_mutex_startProcess);
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if(lamexp_current_file_time() <= s_lastLaunchTime)
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{
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lamexp_sleep(START_DELAY);
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}
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emit messageLogged(commandline2string(program, args) + "\n");
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QProcessEnvironment env = process.processEnvironment();
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if(env.isEmpty()) env = QProcessEnvironment::systemEnvironment();
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env.insert("TEMP", QDir::toNativeSeparators(lamexp_temp_folder2()));
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env.insert("TMP", QDir::toNativeSeparators(lamexp_temp_folder2()));
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process.setProcessEnvironment(env);
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process.setProcessChannelMode(QProcess::MergedChannels);
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process.setReadChannel(QProcess::StandardOutput);
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process.start(program, args);
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if(process.waitForStarted())
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{
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if(s_jobObject)
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{
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if(!s_jobObject->addProcessToJob(&process))
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{
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qWarning("Failed to assign process to job object!");
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}
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}
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lamexp_change_process_priority(&process, -1);
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lock.unlock();
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if(m_firstLaunch)
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{
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emit statusUpdated(0);
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m_firstLaunch = false;
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}
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s_lastLaunchTime = lamexp_current_file_time() + START_DELAY_NANO;
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return true;
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}
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emit messageLogged("Process creation has failed :-(");
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QString errorMsg= process.errorString().trimmed();
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if(!errorMsg.isEmpty()) emit messageLogged(errorMsg);
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process.kill();
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process.waitForFinished(-1);
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s_lastLaunchTime = lamexp_current_file_time() + START_DELAY_NANO;
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return false;
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}
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/*
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* Convert program arguments to single string
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*/
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QString AbstractTool::commandline2string(const QString &program, const QStringList &arguments)
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{
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QString commandline = (program.contains(' ') ? QString("\"%1\"").arg(program) : program);
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for(int i = 0; i < arguments.count(); i++)
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{
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commandline += (arguments.at(i).contains(' ') ? QString(" \"%1\"").arg(arguments.at(i)) : QString(" %1").arg(arguments.at(i)));
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}
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return commandline;
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}
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