EditSimShotDialog.cpp
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#include <QGridLayout>
#include <QPixmap>
#include <QLabel>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include "EditSimShotDialog.h"
#include "Convert.h"
#include <QDebug>
using namespace cv;
EditSimShotDialog::EditSimShotDialog(const QString &fName, int currIdx, const QList<qint64> &shotPositions, int nVignettes, int frameWidth, QWidget *parent)
: QDialog(parent),
m_nVignettes(nVignettes),
m_refIdx(currIdx),
m_currIdx(currIdx),
m_shotPositions(shotPositions),
m_nCamera(0)
{
int fWidth;
int fHeight;
// vector containing the camera ids
m_shotCamera.resize(shotPositions.size());
// retrieving movie features
m_cap.release();
m_cap.open(fName.toStdString());
fWidth = m_cap.get(CV_CAP_PROP_FRAME_WIDTH);
fHeight = m_cap.get(CV_CAP_PROP_FRAME_HEIGHT);
m_vignetteWidth = frameWidth / m_nVignettes;
m_vignetteHeight = m_vignetteWidth * fHeight / fWidth;
// doesn't work anymore after updating Ubuntu to 14.04
// m_frameDur = 1 / m_cap.get(CV_CAP_PROP_FPS) * 1000;
m_frameDur = 1 / 25.0 * 1000;
// initializing vignette list
int i(m_refIdx);
while (i >= m_refIdx - m_nVignettes + 1) {
if (i < 0)
m_vignettePositions.push_front(-1);
else
m_vignettePositions.push_front(m_shotPositions[i] - m_frameDur);
i--;
}
m_currentVignette = new QLabel;
m_currentVignette->setPixmap(refShot());
m_vignetteWidget = new VignetteWidget(m_nVignettes, frameWidth);
m_vignetteWidget->setVideoCapture(fName);
m_vignetteWidget->updateVignette(m_vignettePositions);
QGridLayout *layout = new QGridLayout;
layout->addWidget(m_currentVignette, 0, 0, Qt::AlignRight);
layout->addWidget(m_vignetteWidget, 1, 0, Qt::AlignRight);
setLayout(layout);
setWindowTitle("Annotate similar shots - Shot " + QString::number(m_refIdx + 1));
// setting deletion operations vector
m_delOp.resize(m_shotPositions.size());
m_delOp.fill(false);
}
///////////////////////////////////
// slot called when pressing key //
///////////////////////////////////
void EditSimShotDialog::keyPressEvent(QKeyEvent *event)
{
int toAddIdx; // index of shot to add to visible ones
int idxToDel; // index of single linked shot to untie
/********************************/
/* going through previous shots */
/********************************/
if (event->key() == Qt::Key_Left && m_currIdx > m_nVignettes / 2) {
m_currIdx--;
toAddIdx = m_currIdx - m_nVignettes + 1;
if (toAddIdx < 0)
m_vignettePositions.push_front(-1);
else
m_vignettePositions.push_front(m_shotPositions[toAddIdx] - m_frameDur);
m_vignettePositions.pop_back();
}
else if (event->key() == Qt::Key_Right && m_currIdx < m_refIdx) {
m_vignettePositions.push_back(m_shotPositions[++m_currIdx] - m_frameDur);
m_vignettePositions.pop_front();
}
/*******************************************************/
/* linking current shot to previous one or ignoring it */
/*******************************************************/
else if (event->key() == Qt::Key_Return || event->key() == Qt::Key_Backspace) {
// no similar shot found: increment camera label
if (event->key() == Qt::Key_Backspace) {
m_shotCamera[m_refIdx] = m_nCamera++;
// setting corresponding deletion operation to true
m_delOp[m_refIdx] = true;
}
// similar shot found: label current shot with selected one
else if (event->key() == Qt::Key_Return) {
// linking the shots
m_shotCamera[m_refIdx] = m_shotCamera[m_currIdx - 1];
emit labelSimShot(m_shotPositions[m_currIdx - 1], m_shotCamera[m_currIdx - 1], Segment::Manual);
emit labelSimShot(m_shotPositions[m_refIdx], m_shotCamera[m_refIdx], Segment::Manual);
// setting corresponding deletion operation to false
m_delOp[m_refIdx] = false;
}
// move to next shot position
m_currIdx = ++m_refIdx;
// last shot annotated: exit dialog
if (m_refIdx == m_shotPositions.size())
accept();
else {
// re-initializing vignette list
int i(m_refIdx);
m_vignettePositions.clear();
while (i >= m_refIdx - m_nVignettes + 1) {
if (i < 0)
m_vignettePositions.push_front(-1);
else
m_vignettePositions.push_front(m_shotPositions[i] - m_frameDur);
i--;
}
// set pixmap of current shot and window title
m_currentVignette->setPixmap(refShot());
setWindowTitle("Annotate similar shots - Shot " + QString::number(m_refIdx + 1));
update();
}
}
/*****************************/
/* cancelling last operation */
/*****************************/
else if (event->key() == Qt::Key_Escape && m_refIdx > 0) {
// updating indices
m_currIdx = --m_refIdx;
// last operation consisted in ignoring new shot
if (m_delOp[m_refIdx])
m_nCamera--;
// last operation consisted in linking the shot to a previous one
else {
// retrieving camera label to cancel
const int camToDel(m_shotCamera[m_refIdx]);
// deleting last shot annotation
emit labelSimShot(m_shotPositions[m_refIdx], -1, Segment::Manual);
// if linked with only one shot, delete its associated label
if (m_shotCamera.count(camToDel) == 2) {
idxToDel = m_shotCamera.lastIndexOf(camToDel);
emit labelSimShot(m_shotPositions[idxToDel], -1, Segment::Manual);
}
}
// updating vignette position list
toAddIdx = m_currIdx - m_nVignettes + 1;
if (toAddIdx < 0)
m_vignettePositions.push_front(-1);
else
m_vignettePositions.push_front(m_shotPositions[toAddIdx] - m_frameDur);
m_vignettePositions.pop_back();
// set pixmap of current shot and window title
m_currentVignette->setPixmap(refShot());
setWindowTitle("Annotate similar shots - Shot " + QString::number(m_refIdx + 1));
update();
}
// updating corresponding images
m_vignetteWidget->updateVignette(m_vignettePositions);
m_vignetteWidget->update();
}
///////////////////////
// auxiliary methods //
///////////////////////
QPixmap EditSimShotDialog::refShot()
{
Mat frame;
// retrieving selected frame
m_cap.set(CV_CAP_PROP_POS_MSEC, m_shotPositions[m_refIdx]);
m_cap >> frame;
cv::resize(frame, frame, Size(m_vignetteWidth, m_vignetteHeight));
return QPixmap::fromImage(Convert::fromBGRMatToQImage(frame));
}