void MainWindow::connectToCamera()
{
// Get next tab index
int nextTabIndex = (deviceNumberMap.size()+fileNumberMap.size()==0) ? 0 : ui->tabWidget->count();
// Show dialog
CameraConnectDialog *cameraConnectDialog = new CameraConnectDialog(this);
if(cameraConnectDialog->exec()==QDialog::Accepted)
{
if(cameraConnectDialog->isCamera()) {
// Save user-defined device number
int deviceNumber = cameraConnectDialog->getDeviceNumber();
// Check if this camera is already connected
if(!deviceNumberMap.contains(deviceNumber))
{
// Create ImageBuffer with user-defined size
Buffer<Mat> *imageBuffer = new Buffer<Mat>(cameraConnectDialog->getImageBufferSize());
// Add created ImageBuffer to SharedImageBuffer object
sharedImageBuffer->add(deviceNumber, imageBuffer);
// Create CameraView
cameraViewMap[deviceNumber] = new CameraView(ui->tabWidget, deviceNumber, sharedImageBuffer);
// Attempt to connect to camera
if(cameraViewMap[deviceNumber]->connectToCamera(cameraConnectDialog->getDropFrameCheckBoxState(),
cameraConnectDialog->getCaptureThreadPrio(),
cameraConnectDialog->getProcessingThreadPrio(),
cameraConnectDialog->getResolutionWidth(),
cameraConnectDialog->getResolutionHeight(),
cameraConnectDialog->getFpsNumber()))
{
// Add to map
deviceNumberMap[deviceNumber] = nextTabIndex;
// Save tab label
QString tabLabel = cameraConnectDialog->getTabLabel();
// Allow tabs to be closed
ui->tabWidget->setTabsClosable(true);
// If start tab, remove
if(nextTabIndex==0)
ui->tabWidget->removeTab(0);
// Add tab
ui->tabWidget->addTab(cameraViewMap[deviceNumber], tabLabel + " [" + QString::number(deviceNumber) + "]");
ui->tabWidget->setCurrentWidget(cameraViewMap[deviceNumber]);
// Set tooltips
setTabCloseToolTips(ui->tabWidget, tr("Disconnect Camera"));
//Set Codec
cameraViewMap[deviceNumber]->setCodec(saveCodec);
}
// Could not connect to camera
else
{
// Display error message
QMessageBox::warning(this,tr("ERROR:"),tr("Could not connect to camera. Please check device number."));
// Explicitly delete widget
delete cameraViewMap[deviceNumber];
cameraViewMap.remove(deviceNumber);
// Remove from shared buffer
sharedImageBuffer->removeByDeviceNumber(deviceNumber);
// Explicitly delete ImageBuffer object
delete imageBuffer;
}
}
// Display error message
else
QMessageBox::warning(this,tr("ERROR:"),tr("Could not connect to camera. Already connected."));
}
// Attempt to load a file
else if(cameraConnectDialog->isFile()) {
// Get the filepath from connectDialog
QString filepath = cameraConnectDialog->getFilepath();
// String can't be empty
if(filepath.isEmpty()) {
QMessageBox::warning(this,tr("ERROR:"),tr("Please enter path to video file."));
connectToCamera();
return;
}
// Load the File
QFileInfo file(filepath);
QString filename = file.fileName();
if(file.exists()){
// Create new Videofile entry in QMap
videoViewMap[filename] = new VideoView(ui->tabWidget,filepath);
// Attemp to load the video
if(videoViewMap[filename]->loadVideo(cameraConnectDialog->getPlayerThreadPrio(),
cameraConnectDialog->getResolutionWidth(),
cameraConnectDialog->getResolutionHeight(),
cameraConnectDialog->getFpsNumber()))
{
// Add to map
fileNumberMap[filename] = nextTabIndex;
// Save tab label
QString tabLabel = cameraConnectDialog->getTabLabel();
// Allow tabs to be closed
ui->tabWidget->setTabsClosable(true);
// If start tab remove
if(nextTabIndex==0)
ui->tabWidget->removeTab(0);
// Add tab
ui->tabWidget->addTab(videoViewMap[filename], tabLabel+"["+filename+"]");
ui->tabWidget->setCurrentWidget(videoViewMap[filename]);
// Set tooltips
setTabCloseToolTips(ui->tabWidget, tr("Remove Video"));
// Set Codec
videoViewMap[filename]->setCodec(saveCodec);
videoViewMap[filename]->set_useVideoCodec(useVideoCodec);
}
// Could not load video
else {
// Display error message
QMessageBox::warning(this,tr("ERROR:"),tr("Could not convert Video. Please check file format."));
// Explicitly delete widget
delete videoViewMap[filename];
videoViewMap.remove(filename);
}
}
// Error if file does not exist
else {
QMessageBox::warning(this,tr("ERROR:"),tr("File does not exist."));
connectToCamera();
return;
}
}
}
// Delete dialog
delete cameraConnectDialog;
}
void MainWindow::connectToCamera()
{
// We cannot connect to a camera if devices are already connected and stream synchronization is in progress
if(ui->actionSynchronizeStreams->isChecked() && deviceNumberMap.size()>0 && sharedImageBuffer->getSyncEnabled())
{
// Prompt user
QMessageBox::warning(this, tr("qt-opencv-multithreaded"),
tr("Stream synchronization is in progress.\n\n"
"Please close all currently open streams before attempting to open a new stream."),
QMessageBox::Ok);
}
// Attempt to connect to camera
else
{
// Get next tab index
int nextTabIndex = (deviceNumberMap.size()==0) ? 0 : ui->tabWidget->count();
// Show dialog
CameraConnectDialog *cameraConnectDialog = new CameraConnectDialog(this, ui->actionSynchronizeStreams->isChecked());
if(cameraConnectDialog->exec()==QDialog::Accepted)
{
// Save user-defined device number
int deviceNumber = cameraConnectDialog->getDeviceNumber();
// Check if this camera is already connected
if(!deviceNumberMap.contains(deviceNumber))
{
// Create ImageBuffer with user-defined size
Buffer<Mat> *imageBuffer = new Buffer<Mat>(cameraConnectDialog->getImageBufferSize());
// Add created ImageBuffer to SharedImageBuffer object
sharedImageBuffer->add(deviceNumber, imageBuffer, ui->actionSynchronizeStreams->isChecked());
// Create CameraView
cameraViewMap[deviceNumber] = new CameraView(ui->tabWidget, deviceNumber, sharedImageBuffer);
// Check if stream synchronization is enabled
if(ui->actionSynchronizeStreams->isChecked())
{
// Prompt user
int ret = QMessageBox::question(this, tr("qt-opencv-multithreaded"),
tr("Stream synchronization is enabled.\n\n"
"Do you want to start processing?\n\n"
"Choose 'No' if you would like to open additional streams."),
QMessageBox::Yes | QMessageBox::No,
QMessageBox::Yes);
// Start processing
if(ret==QMessageBox::Yes)
{
sharedImageBuffer->setSyncEnabled(true);
}
// Defer processing
else
{
sharedImageBuffer->setSyncEnabled(false);
}
}
// Attempt to connect to camera
if(cameraViewMap[deviceNumber]->connectToCamera(cameraConnectDialog->getDropFrameCheckBoxState(),
cameraConnectDialog->getCaptureThreadPrio(),
cameraConnectDialog->getProcessingThreadPrio(),
cameraConnectDialog->getEnableFrameProcessingCheckBoxState(),
cameraConnectDialog->getResolutionWidth(),
cameraConnectDialog->getResolutionHeight()))
{
// Add to map
deviceNumberMap[deviceNumber] = nextTabIndex;
// Save tab label
QString tabLabel = cameraConnectDialog->getTabLabel();
// Allow tabs to be closed
ui->tabWidget->setTabsClosable(true);
// If start tab, remove
if(nextTabIndex==0)
{
ui->tabWidget->removeTab(0);
}
// Add tab
ui->tabWidget->addTab(cameraViewMap[deviceNumber], tabLabel + " [" + QString::number(deviceNumber) + "]");
ui->tabWidget->setCurrentWidget(cameraViewMap[deviceNumber]);
// Set tooltips
setTabCloseToolTips(ui->tabWidget, "Disconnect Camera");
// Prevent user from enabling/disabling stream synchronization after a camera has been connected
ui->actionSynchronizeStreams->setEnabled(false);
}
// Could not connect to camera
else
{
// Display error message
QMessageBox::warning(this,"ERROR:","Could not connect to camera. Please check device number.");
// Explicitly delete widget
delete cameraViewMap[deviceNumber];
cameraViewMap.remove(deviceNumber);
// Remove from shared buffer
sharedImageBuffer->removeByDeviceNumber(deviceNumber);
// Explicitly delete ImageBuffer object
delete imageBuffer;
}
}
// Display error message
else
{
QMessageBox::warning(this,"ERROR:","Could not connect to camera. Already connected.");
}
}
// Delete dialog
delete cameraConnectDialog;
}
}
