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-rw-r--r--src/qcam/main_window.cpp23
-rw-r--r--src/qcam/main_window.h14
-rw-r--r--src/qcam/meson.build11
3 files changed, 46 insertions, 2 deletions
diff --git a/src/qcam/main_window.cpp b/src/qcam/main_window.cpp
index d6136910..b2f3a1f3 100644
--- a/src/qcam/main_window.cpp
+++ b/src/qcam/main_window.cpp
@@ -28,6 +28,7 @@ MainWindow::MainWindow(const OptionsParser::Options &options)
title_ = "QCam " + QString::fromStdString(libcamera::version);
setWindowTitle(title_);
+ connect(&titleTimer_, SIGNAL(timeout()), this, SLOT(updateTitle()));
viewfinder_ = new ViewFinder(this);
setCentralWidget(viewfinder_);
@@ -54,6 +55,19 @@ MainWindow::~MainWindow()
CameraManager::instance()->stop();
}
+void MainWindow::updateTitle()
+{
+ unsigned int duration = frameRateInterval_.elapsed();
+ unsigned int frames = framesCaptured_ - previousFrames_;
+ double fps = frames * 1000.0 / duration;
+
+ /* Restart counters. */
+ frameRateInterval_.start();
+ previousFrames_ = framesCaptured_;
+
+ setWindowTitle(title_ + " : " + QString::number(fps, 'f', 2) + " fps");
+}
+
int MainWindow::openCamera()
{
CameraManager *cm = CameraManager::instance();
@@ -148,6 +162,10 @@ int MainWindow::startCapture()
requests.push_back(request);
}
+ titleTimer_.start(2000);
+ frameRateInterval_.start();
+ previousFrames_ = 0;
+ framesCaptured_ = 0;
lastBufferTime_ = 0;
ret = camera_->start();
@@ -188,6 +206,9 @@ void MainWindow::stopCapture()
isCapturing_ = false;
config_.reset();
+
+ titleTimer_.stop();
+ setWindowTitle(title_);
}
void MainWindow::requestComplete(Request *request,
@@ -196,6 +217,8 @@ void MainWindow::requestComplete(Request *request,
if (request->status() == Request::RequestCancelled)
return;
+ framesCaptured_++;
+
Buffer *buffer = buffers.begin()->second;
double fps = buffer->timestamp() - lastBufferTime_;
diff --git a/src/qcam/main_window.h b/src/qcam/main_window.h
index 46a494a9..f58cb6a6 100644
--- a/src/qcam/main_window.h
+++ b/src/qcam/main_window.h
@@ -10,7 +10,10 @@
#include <map>
#include <memory>
+#include <QElapsedTimer>
#include <QMainWindow>
+#include <QObject>
+#include <QTimer>
#include <libcamera/camera.h>
#include <libcamera/stream.h>
@@ -28,10 +31,15 @@ enum {
class MainWindow : public QMainWindow
{
+ Q_OBJECT
+
public:
MainWindow(const OptionsParser::Options &options);
~MainWindow();
+private Q_SLOTS:
+ void updateTitle();
+
private:
int openCamera();
@@ -43,6 +51,8 @@ private:
int display(Buffer *buffer);
QString title_;
+ QTimer titleTimer_;
+
const OptionsParser::Options &options_;
std::shared_ptr<Camera> camera_;
@@ -51,6 +61,10 @@ private:
uint64_t lastBufferTime_;
+ QElapsedTimer frameRateInterval_;
+ uint32_t previousFrames_;
+ uint32_t framesCaptured_;
+
ViewFinder *viewfinder_;
};
diff --git a/src/qcam/meson.build b/src/qcam/meson.build
index 9f1fa75f..21f91f25 100644
--- a/src/qcam/meson.build
+++ b/src/qcam/meson.build
@@ -7,14 +7,21 @@ qcam_sources = files([
'viewfinder.cpp',
])
-import('qt5')
+qcam_moc_headers = files([
+ 'main_window.h',
+])
+
+qt5 = import('qt5')
qt5_dep = dependency('qt5',
method : 'pkg-config',
modules : ['Core', 'Gui', 'Widgets'],
required : false)
if qt5_dep.found()
- qcam = executable('qcam', qcam_sources,
+ moc_files = qt5.preprocess(moc_headers: qcam_moc_headers,
+ dependencies: qt5_dep)
+
+ qcam = executable('qcam', qcam_sources, moc_files,
install : true,
dependencies : [libcamera_dep, qt5_dep],
cpp_args : '-DQT_NO_KEYWORDS')