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#include <QFile>
#include <QFileInfo>
#include <QCryptographicHash>
#include <QByteArray>
#include <QSettings>
#include <QProcess>
#include <QJsonObject>
#include <QTemporaryFile>
#include <QProcess>
#include <QFontMetrics>
#include <QPainter>
#include <QStandardPaths>
#include <QDir>
#include "helper.h"
namespace Helper {
const QString md5Sum(const QString &path){
QFileInfo info(path);
if(!info.exists() || !info.isFile()){
return QString();
}
QString retval;
QCryptographicHash h(QCryptographicHash::Md5);
QFile file(path);
file.open(QIODevice::ReadOnly);
qint64 read = 0;
if(info.size() < (5 * 1024 * 1024)){
QByteArray data(4096, '\0');
do {
read = file.read(data.data(), 4096);
if(read > 0){
h.addData(data.data(), read);
}
} while (read == 4096);
QByteArray res = h.result();
retval = res.toHex().toLower();
}else{
QByteArray data(512, '\0');
int offset = info.size() / 3;
file.seek(offset);
int numBytes = 512 * 1024;
int readBytes = 0;
do {
read = file.read(data.data(), 512);
if(read > 0){
readBytes += read;
}else{
return QString();
}
h.addData(data.data(), read);
} while(readBytes < numBytes);
QByteArray res = h.result();
retval = res.toHex().toLower();
}
return retval;
}
const QJsonDocument ffpmegData(const QString &path){
QSettings s;
QString ffProbe = s.value("ext/ffprobe").toString();
QStringList args;
args << "-v" << "quiet" << "-print_format" << "json" << "-show_format" << "-show_streams" << path;
QProcess ffproc;
ffproc.start(ffProbe, args);
if(!ffproc.waitForStarted()){
return QJsonDocument();
}
ffproc.waitForFinished();
QByteArray ffData = ffproc.readAllStandardOutput();
return QJsonDocument::fromJson(ffData);
}
const QPixmap preview(const QString &file){
QJsonDocument jDoc = ffpmegData(file);
QJsonObject jObj = jDoc.object();
QJsonValue durationV = jObj["format"].toObject()["duration"];
int seconds = durationV.toVariant().toDouble();
int interval = seconds / 4;
QImage img1 = snapshot(file, 60);
QImage img2 = snapshot(file, interval * 2);
QImage img3 = snapshot(file, interval * 3);
QImage img4 = snapshot(file, seconds - 60);
QImage retval(640 * 2 + 10, img1.height() * 2 + 10, QImage::Format_ARGB32);
//retval.fill(Qt::red);
QPainter p(&retval);
p.drawImage(0, 0, img1);
p.drawImage(650, 0, img2);
p.drawImage(0, img1.height() + 10, img3);
p.drawImage(650, img1.height() + 10, img4);
return QPixmap::fromImage(retval);
}
const QImage snapshot(const QString &file, int offset){
const int fixedWith = 640;
QSettings s;
QString ffmpeg = s.value("ext/ffmpeg").toString();
QTemporaryFile tempFile;
tempFile.open();
QStringList ffmpegArgs = QStringList() << "-y" << "-ss" << QString::number(offset) << "-i" << file << "-f" << "image2" << "-vframes" << "1" << tempFile.fileName();
QProcess ffproc;
ffproc.start(ffmpeg, ffmpegArgs);
if(!ffproc.waitForStarted()){
return QImage();
}
if(ffproc.state() == QProcess::Running){
ffproc.waitForFinished();
}
QImage retval(tempFile.fileName());
retval = retval.scaledToWidth(fixedWith);
Duration dur(offset);
QFont font("Monospace", 10);
QFontMetrics fm(font);
int width = fm.width(dur.toString());
int height = fm.height();
QPainter p(&retval);
p.setBrush(QBrush(QColor(255, 255, 255, 70)));
QRect durationRect(fixedWith / 2 - width / 2 - 4, retval.height() - height - 8, width + 4, height + 4);
p.drawRect(durationRect);
p.setPen(Qt::black);
p.drawText(durationRect, Qt::AlignCenter, dur.toString());
return retval;
}
const QString appDataDir(){
QString retval = QStandardPaths::locate(QStandardPaths::HomeLocation, ".shemovcleaner", QStandardPaths::LocateDirectory);
if(retval.isEmpty()){
QString homeDir = QStandardPaths::locate(QStandardPaths::HomeLocation, QString(), QStandardPaths::LocateDirectory);
QDir d(homeDir);
if(d.mkdir(".shemovcleaner")){
retval = QString("%1/%2").arg(homeDir).arg(".shemovcleaner");
}
}
return retval;
}
const QIcon icon(const QColor &bg, const QChar c, bool bold){
QImage img(32, 32, QImage::Format_ARGB32);
img.fill(QColor(0, 0, 0, 0));
QPainter *p = new QPainter(&img);
p->setBrush(bg);
p->setRenderHint(QPainter::Antialiasing);
p->setRenderHint(QPainter::TextAntialiasing);
p->setRenderHint(QPainter::SmoothPixmapTransform);
QFont f("courier new");
f.setPixelSize(32);
f.setBold(bold);
p->setPen(Qt::white);
p->drawEllipse(img.rect());
p->setFont(f);
p->drawText(img.rect(), Qt::AlignCenter, c);
delete p;
return QIcon(QPixmap::fromImage(img));
}
Duration::Duration() : mHours(0), mMinutes(0), mSeconds(0) {}
Duration::Duration(qint64 seconds){
int sec(0), min(0), h(0);
// get hours
h = (seconds / 60 / 60);
// remaining minutes
min = (seconds / 60) % 60;
// seconds
sec = seconds % 60;
mHours = h;
mMinutes = min;
mSeconds = sec;
}
Duration::Duration(const QString &dur) : mHours(0), mMinutes(0), mSeconds(0){
QStringList parts = dur.split(':');
if(parts.size() == 3){
mHours = parts.at(0).toInt();
mMinutes = parts.at(1).toInt();
mSeconds = parts.at(2).toInt();
}
}
Duration Duration::operator+(const Duration &dur) const{
Duration retval;
retval.mSeconds = mSeconds + dur.mSeconds;
retval.mMinutes = mMinutes + dur.mMinutes + retval.mSeconds / 60;
retval.mSeconds %= 60;
retval.mHours = mHours + dur.mHours + retval.mMinutes / 60;
retval.mMinutes %= 60;
return retval;
}
const QString Duration::toString() const {
QString retval = QString("%1:%2:%3").arg(QString::number(mHours), 2, '0').arg(QString::number(mMinutes), 2, '0').arg(QString::number(mSeconds), 2, '0');
return retval;
}
bool Duration::isNull() const {
return mHours == 0 && mMinutes == 0 && mSeconds == 0;
}
qint64 Duration::toSeconds() const {
qint64 retval;
retval = mHours * 60 * 60 + mMinutes * 60 + mSeconds;
return retval;
}
}
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