qcam: CamSelectDialog: Display Location and Model propety of camera

The camera selection dialog currently only displays the camera Id.
Display the camera location and camera model if available.

Signed-off-by: Utkarsh Tiwari <utkarsh02t@gmail.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

src/qcam/cam_select_dialog.cpp

@@ -7,12 +7,15 @@
 
 #include "cam_select_dialog.h"
 
+#include <memory>
+
 #include <libcamera/camera.h>
 #include <libcamera/camera_manager.h>
 
 #include <QComboBox>
 #include <QDialogButtonBox>
 #include <QFormLayout>
+#include <QLabel>
 #include <QString>
 
 CameraSelectorDialog::CameraSelectorDialog(libcamera::CameraManager *cameraManager,
@@ -27,6 +30,14 @@ CameraSelectorDialog::CameraSelectorDialog(libcamera::CameraManager *cameraManag
 	for (const auto &cam : cm_->cameras())
 		cameraIdComboBox_->addItem(QString::fromStdString(cam->id()));
 
+	/* Set camera information labels. */
+	cameraLocation_ = new QLabel;
+	cameraModel_ = new QLabel;
+
+	updateCameraInfo(cameraIdComboBox_->currentText());
+	connect(cameraIdComboBox_, &QComboBox::currentTextChanged,
+		this, &CameraSelectorDialog::updateCameraInfo);
+
 	/* Setup the QDialogButton Box */
 	QDialogButtonBox *buttonBox =
 		new QDialogButtonBox(QDialogButtonBox::Ok |
@@ -39,6 +50,8 @@ CameraSelectorDialog::CameraSelectorDialog(libcamera::CameraManager *cameraManag
 
 	/* Set the layout. */
 	layout->addRow("Camera:", cameraIdComboBox_);
+	layout->addRow("Location:", cameraLocation_);
+	layout->addRow("Model:", cameraModel_);
 	layout->addWidget(buttonBox);
 }
 
@@ -60,3 +73,39 @@ void CameraSelectorDialog::removeCamera(QString cameraId)
 	int cameraIndex = cameraIdComboBox_->findText(cameraId);
 	cameraIdComboBox_->removeItem(cameraIndex);
 }
+
+/* Camera Information */
+void CameraSelectorDialog::updateCameraInfo(QString cameraId)
+{
+	const std::shared_ptr<libcamera::Camera> &camera =
+		cm_->get(cameraId.toStdString());
+
+	if (!camera)
+		return;
+
+	const libcamera::ControlList &properties = camera->properties();
+
+	const auto &location = properties.get(libcamera::properties::Location);
+	if (location) {
+		switch (*location) {
+		case libcamera::properties::CameraLocationFront:
+			cameraLocation_->setText("Internal front camera");
+			break;
+		case libcamera::properties::CameraLocationBack:
+			cameraLocation_->setText("Internal back camera");
+			break;
+		case libcamera::properties::CameraLocationExternal:
+			cameraLocation_->setText("External camera");
+			break;
+		default:
+			cameraLocation_->setText("Unknown");
+		}
+	} else {
+		cameraLocation_->setText("Unknown");
+	}
+
+	const auto &model = properties.get(libcamera::properties::Model)
+				    .value_or("Unknown");
+
+	cameraModel_->setText(QString::fromStdString(model));
+}

src/qcam/cam_select_dialog.h

@@ -11,11 +11,14 @@
 
 #include <libcamera/camera.h>
 #include <libcamera/camera_manager.h>
+#include <libcamera/controls.h>
+#include <libcamera/property_ids.h>
 
 #include <QDialog>
 #include <QString>
 
 class QComboBox;
+class QLabel;
 
 class CameraSelectorDialog : public QDialog
 {
@@ -31,9 +34,14 @@ public:
 	void addCamera(QString cameraId);
 	void removeCamera(QString cameraId);
 
+	/* Camera Information */
+	void updateCameraInfo(QString cameraId);
+
 private:
 	libcamera::CameraManager *cm_;
 
 	/* UI elements. */
 	QComboBox *cameraIdComboBox_;
+	QLabel *cameraLocation_;
+	QLabel *cameraModel_;
 };