Video: View self video during video call

src/video/camerasource.cpp

@@ -286,6 +286,8 @@ bool CameraSource::openDevice()
     while (!streamFuture.isRunning())
         QThread::yieldCurrentThread();
 
+    emit deviceOpened();
+
     return true;
 }
 

src/video/camerasource.h

@@ -59,6 +59,9 @@ public:
     virtual bool subscribe() override;
     virtual void unsubscribe() override;
 
+signals:
+    void deviceOpened();
+
 private:
     CameraSource();
     ~CameraSource();

src/video/netcamview.cpp

@@ -23,6 +23,7 @@
 #include <QLabel>
 #include <QHBoxLayout>
 #include "src/widget/tool/movablewidget.h"
+#include "camerasource.h"
 
 NetCamView::NetCamView(QWidget* parent)
     : QWidget(parent)
@@ -36,15 +37,26 @@ NetCamView::NetCamView(QWidget* parent)
 
     mainLayout->addWidget(videoSurface);
 
-    selfFrame = new MovableWidget(this);
+    selfFrame = new MovableWidget(videoSurface);
     selfFrame->setStyleSheet("background-color: red;");
     selfFrame->show();
+
+    selfVideoSurface = new VideoSurface(selfFrame);
+    selfVideoSurface->setObjectName(QStringLiteral("CamVideoSurface"));
+    selfVideoSurface->setMinimumSize(QSize(160, 120));
+    selfVideoSurface->setSource(&CameraSource::getInstance());
+    QHBoxLayout* camLayout = new QHBoxLayout(selfFrame);
+    camLayout->addWidget(selfVideoSurface);
+    camLayout->setMargin(0);
+
+    connect(&CameraSource::getInstance(), &CameraSource::deviceOpened, this, &NetCamView::updateSize);
 }
 
 void NetCamView::show(VideoSource *source, const QString &title)
 {
     setSource(source);
     setTitle(title);
+    selfFrame->setBoundary(videoSurface->getRect());
 
     QWidget::show();
 }
@@ -69,9 +81,16 @@ void NetCamView::setTitle(const QString &title)
 void NetCamView::resizeEvent(QResizeEvent* event)
 {
     QWidget::resizeEvent(event);
-
-    float ratio = 1.33f;
-    int frameHeight = height() / 3.0f;
-    selfFrame->resize(frameHeight * ratio, frameHeight);
-    selfFrame->move(6, height() - selfFrame->height() - 6);
+    updateSize();
+}
+
+void NetCamView::updateSize()
+{
+    QSize frameSize = selfVideoSurface->getFrameSize();
+    float ratio = frameSize.width() / static_cast<float>(frameSize.height());
+    QRect videoRect = videoSurface->getRect();
+    int frameHeight = videoRect.height() / 3.0f;
+    selfFrame->resize(frameHeight * ratio, frameHeight);
+    selfFrame->setBoundary(videoRect);
+    selfVideoSurface->resize(selfFrame->size());
 }

src/video/netcamview.h

@@ -27,6 +27,7 @@ struct vpx_image;
 class VideoSurface;
 class VideoSource;
 class QFrame;
+class MovableWidget;
 
 class NetCamView : public QWidget
 {
@@ -44,10 +45,14 @@ public:
 protected:
     void resizeEvent(QResizeEvent* event) final override;
 
+private slots:
+    void updateSize();
+
 private:
     QHBoxLayout* mainLayout;
     VideoSurface* videoSurface;
-    QWidget* selfFrame;
+    VideoSurface* selfVideoSurface;
+    MovableWidget* selfFrame;
 };
 
 #endif // NETCAMVIEW_H

src/video/videosurface.cpp

@@ -28,7 +28,7 @@ VideoSurface::VideoSurface(QWidget* parent)
     , frameLock{false}
     , hasSubscribed{false}
 {
-
+    //setMinimumWidth(160);
 }
 
 VideoSurface::VideoSurface(VideoSource *source, QWidget* parent)
@@ -51,6 +51,49 @@ void VideoSurface::setSource(VideoSource *src)
     source = src;
     subscribe();
 }
+#include <QDebug>
+QRect VideoSurface::getRect()
+{
+    // Fast lock
+    {
+        bool expected = false;
+        while (!frameLock.compare_exchange_weak(expected, true))
+            expected = false;
+    }
+
+    std::shared_ptr<VideoFrame> last = lastFrame;
+    frameLock = false;
+
+    if (last)
+    {
+        QSize frameSize = lastFrame->getSize();
+        QRect rect = this->rect();
+        int width = frameSize.width()*rect.height()/frameSize.height();
+        rect.setLeft((rect.width()-width)/2);
+        rect.setWidth(width);
+        return rect;
+    }
+
+    return QRect();
+}
+
+QSize VideoSurface::getFrameSize()
+{
+    // Fast lock
+    {
+        bool expected = false;
+        while (!frameLock.compare_exchange_weak(expected, true))
+            expected = false;
+    }
+
+    QSize frameSize;
+
+    if (lastFrame)
+        frameSize = lastFrame->getSize();
+
+    frameLock = false;
+    return frameSize;
+}
 
 void VideoSurface::subscribe()
 {
@@ -109,13 +152,40 @@ void VideoSurface::paintEvent(QPaintEvent*)
     if (lastFrame)
     {
         QSize frameSize = lastFrame->getSize();
-        QRect rect = painter.viewport();
+        QRect rect = this->rect();
         int width = frameSize.width()*rect.height()/frameSize.height();
         rect.setLeft((rect.width()-width)/2);
         rect.setWidth(width);
 
         QImage frame = lastFrame->toQImage(rect.size());
         painter.drawImage(rect, frame, frame.rect(), Qt::NoFormatConversion);
+        //qDebug() << "VIDEO 2" << rect;
     }
     frameLock = false;
 }
+#include <QResizeEvent>
+void VideoSurface::resizeEvent(QResizeEvent* event)
+{
+    QSize frameSize;
+
+    // Fast lock
+    {
+        bool expected = false;
+        while (!frameLock.compare_exchange_weak(expected, true))
+            expected = false;
+    }
+
+    if (lastFrame)
+    {
+        frameSize = lastFrame->getSize();
+    }
+
+    frameLock = false;
+
+    if (frameSize.isValid())
+    {
+        float ratio = frameSize.height() / static_cast<float>(frameSize.width());
+        int width = ratio*event->size().width();
+        setMaximumHeight(width);
+    }
+}

src/video/videosurface.h

@@ -35,12 +35,15 @@ public:
     ~VideoSurface();
 
     void setSource(VideoSource* src); //NULL is a valid option
+    QRect getRect();
+    QSize getFrameSize();
 
 protected:
     void subscribe();
     void unsubscribe();
 
     virtual void paintEvent(QPaintEvent * event) final override;
+    virtual void resizeEvent(QResizeEvent* event) final override;
 
 private slots:
     void onNewFrameAvailable(std::shared_ptr<VideoFrame> newFrame);

src/widget/tool/movablewidget.cpp

@@ -26,6 +26,15 @@ MovableWidget::MovableWidget(QWidget *parent)
 
 }
 
+void MovableWidget::setBoundary(const QRect& boundary)
+{
+    boundaryRect = boundary;
+
+    QPoint moveTo = pos();
+    checkBoundary(moveTo);
+    move(moveTo);
+}
+
 void MovableWidget::mousePressEvent(QMouseEvent* event)
 {
     if (event->buttons() & Qt::LeftButton)
@@ -40,18 +49,7 @@ void MovableWidget::mouseMoveEvent(QMouseEvent* event)
     if (moving)
     {
         QPoint moveTo = pos() - (lastPoint - event->globalPos());
-
-        if (moveTo.x() < 0)
-            moveTo.setX(0);
-
-        if (moveTo.y() < 0)
-            moveTo.setY(0);
-
-        if (moveTo.x() + width() > parentWidget()->width())
-            moveTo.setX(parentWidget()->width() - width());
-
-        if (moveTo.y() + height() > parentWidget()->height())
-            moveTo.setY(parentWidget()->height() - height());
+        checkBoundary(moveTo);
 
         move(moveTo);
         lastPoint = event->globalPos();
@@ -63,3 +61,52 @@ void MovableWidget::mouseReleaseEvent(QMouseEvent* event)
     if (!(event->buttons() & Qt::LeftButton))
         moving = false;
 }
+#include <QGraphicsOpacityEffect>
+void MovableWidget::mouseDoubleClickEvent(QMouseEvent* event)
+{
+    if (!(event->buttons() & Qt::LeftButton))
+        return;
+
+    if (!graphicsEffect())
+    {
+        QGraphicsOpacityEffect* opacityEffect = new QGraphicsOpacityEffect(this);
+        opacityEffect->setOpacity(0.5);
+        setGraphicsEffect(opacityEffect);
+    }
+    else
+    {
+        setGraphicsEffect(nullptr);
+    }
+}
+
+void MovableWidget::checkBoundary(QPoint& point) const
+{
+    int x1, y1, x2, y2;
+    boundaryRect.getCoords(&x1, &y1, &x2, &y2);
+
+    // Video boundary.
+    if (point.x() + width() < x1)
+        point.setX(x1 - width());
+
+    if (point.y() + height() <y1)
+        point.setY(y1 - height());
+
+    if (point.x() > x2)
+        point.setX(x2);
+
+    if (point.y() > y2)
+        point.setY(y2);
+
+    // Parent boundary.
+    if (point.x() < 0)
+        point.setX(0);
+
+    if (point.y() < 0)
+        point.setY(0);
+
+    if (point.x() + width() > parentWidget()->width())
+        point.setX(parentWidget()->width() - width());
+
+    if (point.y() + height() > parentWidget()->height())
+        point.setY(parentWidget()->height() - height());
+}

src/widget/tool/movablewidget.h

@@ -25,16 +25,21 @@
 class MovableWidget : public QWidget
 {
 public:
-    MovableWidget(QWidget* parent = 0);
+    MovableWidget(QWidget* parent);
+    void setBoundary(const QRect& boundary);
 
 protected:
     void mousePressEvent(QMouseEvent* event);
     void mouseMoveEvent(QMouseEvent* event);
     void mouseReleaseEvent(QMouseEvent* event);
+    void mouseDoubleClickEvent(QMouseEvent* event);
 
 private:
+    void checkBoundary(QPoint& point) const;
+
     bool moving = false;
     QPoint lastPoint;
+    QRect boundaryRect;
 };
 
 #endif // MOVABLEWIDGET_H