Qt 5.9 | Qt Multimedia | QML Video Example | SceneMulti.qml Example File

Qt 5.9.4 Reference Documentation

# SceneMulti.qml Example File

multimedia/video/qmlvideo/qml/qmlvideo/SceneMulti.qml

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      import QtQuick 2.0

      Scene {
          id: root

          property real itemWidth: (width / 3) - 40
          property real itemTopMargin: 50

          QtObject {
              id: contentProxy
              function initialize() {
                  video1.initialize()
                  video2.initialize()
              }
          }

          Component {
              id: startStopComponent

              Rectangle {
                  id: root
                  color: "transparent"

                  function content() {
                      return root.parent
                  }

                  Text {
                      anchors {
                          horizontalCenter: parent.horizontalCenter
                          bottom: parent.bottom
                          margins: 20
                      }
                      text: content() ? content().started ? "Tap to stop" : "Tap to start" : ""
                      color: "#e0e0e0"
                  }

                  MouseArea {
                      anchors.fill: parent
                      onClicked: {
                          if (content().started)
                              content().stop()
                          else
                              content().start()
                      }
                  }
              }
          }

          Content {
              id: video1
              anchors {
                  left: parent.left
                  leftMargin: 10
                  top: parent.top
                  topMargin: root.itemTopMargin
              }
              autoStart: false
              contentType: "video"
              showBorder: true
              showFrameRate: started
              source: parent.source1
              width: itemWidth
              volume: parent.volume

              Loader {
                  id: video1StartStopLoader
                  onLoaded: {
                      item.parent = video1
                      item.anchors.fill = video1
                  }
              }

              onInitialized: video1StartStopLoader.sourceComponent = startStopComponent
          }

          Rectangle {
              id: cameraHolder
              anchors {
                  horizontalCenter: parent.horizontalCenter
                  top: parent.top
                  topMargin: root.itemTopMargin
              }
              border.width: 1
              border.color: "white"
              color: "transparent"
              width: itemWidth
              height: width
              property bool started: false

              Loader {
                  id: cameraLoader
                  onLoaded: {
                      item.parent = cameraHolder
                      item.centerIn = cameraHolder
                      item.contentType = "camera"
                      item.showFrameRate = true
                      item.width = itemWidth
                      item.z = 1.0
                      cameraErrorConnection.target = item
                      item.initialize()
                  }
              }

              Loader {
                  id: cameraStartStopLoader
                  sourceComponent: startStopComponent
                  onLoaded: {
                      item.parent = cameraHolder
                      item.anchors.fill = cameraHolder
                      item.z = 2.0
                  }
              }

              Connections {
                  id: cameraErrorConnection
                  onError: {
                      console.log("[qmlvideo] SceneMulti.camera.onError")
                      cameraHolder.stop()
                  }
              }

              function start() {
                  cameraLoader.source = "Content.qml"
                  cameraHolder.started = true
              }

              function stop() {
                  cameraLoader.source = ""
                  cameraHolder.started = false
              }
          }

          Content {
              id: video2
              anchors {
                  right: parent.right
                  rightMargin: 10
                  top: parent.top
                  topMargin: root.itemTopMargin
              }
              autoStart: false
              contentType: "video"
              showBorder: true
              showFrameRate: started
              source: parent.source2
              width: itemWidth
              volume: parent.volume

              Loader {
                  id: video2StartStopLoader
                  onLoaded: {
                      item.parent = video2
                      item.anchors.fill = video2
                  }
              }

              onInitialized: video2StartStopLoader.sourceComponent = startStopComponent
          }

          Component.onCompleted: root.content = contentProxy
      }