Jerry-Rig/processmanager.cpp at master · CountMurphy/Jerry-Rig · GitHub

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#include<iostream>
#include<QProcess>
#include<QTextCodec>
#include<QMessageBox>
#include<QDir>
#include "processmanager.h"
#include "ui_processmanager.h"

using namespace std;

ProcessManager::ProcessManager(QWidget *parent, QSettings *settings, convParams *params) :
    QDialog(parent),
    ui(new Ui::ProcessManager)
{
    ui->setupUi(this);
    setAttribute(Qt::WA_DeleteOnClose);

    bool isFFMPEG=settings->value("FFMPEG").toBool();

    //kick off worker process
    cerr<<"Converstion Starting..."<<endl<<endl;
    converter = new QProcess(parent);

    connect(converter,SIGNAL(finished(int)),parentWidget(),SLOT(disposeProcess(int)));
    connect(converter,SIGNAL(readyReadStandardError()),this,SLOT(readReady()));
    connect(ui->buttonBox,SIGNAL(clicked(QAbstractButton*)),this,SLOT(cancel()));
    connect(converter,SIGNAL(error(QProcess::ProcessError)),this,SLOT(Error(QProcess::ProcessError)));

    QString program= isFFMPEG ? "ffmpeg":"avconv";
    QStringList args;

    args<<"-i" << params->input;
    args<<"-c:v"<< "libx264";
    args<<"-c:s"<< "copy";

    switch(params->Quality)
    {
    case 0:
        args<<"-crf"<< "18";
        break;
    case 1:
        args<<"-crf"<< "22";
        break;
    case 2:
        args<<"-crf"<< "25";
        break;
    }

    switch(params->Size)
    {
    case 0:
        args<<"-preset"<< "veryslow";
        break;
    case 1:
        args<<"-preset"<< "fast";
        break;
    case 2:
        args<<"-preset"<< "ultrafast";
        break;
    }

    if(params->batchDir=="")
    {
        args<<params->input+"_converted.mkv";
    }else{
        QFileInfo currentFile(params->input);
        args<<QDir(params->batchDir).absoluteFilePath( currentFile.fileName() +"_converted.mkv");
    }

    converter->start(program, args);
}

ProcessManager::~ProcessManager()
{
    delete ui;
    cerr<<"process destoyed"<<endl;
}

void ProcessManager::readReady()
{
    QByteArray data=converter->readAllStandardError();
    QString DataAsString;
    DataAsString.append(data.data());
    ui->label->setText(DataAsString);
}

void ProcessManager::cancel()
{
    converter->terminate();
    ui->label->setText("Please wait while conversion terminates....");
}

void ProcessManager::Error(QProcess::ProcessError perror)
{

    cerr<<"QProcess Error:"<<perror<<endl;
    QSettings *settings=new QSettings();
    bool isFFMPEG=settings->value("FFMPEG").toBool();
    QString app=isFFMPEG?"FFMPEG":"LibAV";

    if(perror==0)//not installed
    {
        QMessageBox::critical(this,"Critical Failure","There was a serious problem processing your request. Please ensure "+app+" is installed.");
    }
    if(perror==1)//crashed
    {
        QMessageBox::critical(this,"Critical Failure",app+" has crashed");
    }
    this->deleteLater();
    this->close();
}