DirectShow: Refactor camera backend.

Almost entire rewrite of the camera backend. It doesn't provide new
features but is more stable and behave as it should.

- Correctly report camera state and status
- Correctly report if the camera is ready to capture
- Emit imageExposed() signal
- Save captured images in an appropriate directory
- Images can be captured even without a viewport
- Better error handling

Removed the custom QVideoWidgetControl as it doesn't provide anything more
than the QVideoWidget's renderer control fallback.

Task-number: QTBUG-33782
Change-Id: I9baf6f83e7c69619f20a101921f7865a1c90d5e4
Reviewed-by: Christian Stromme <christian.stromme@digia.com>

1 files changed, 4 insertions, 9 deletions

diff --git a/src/plugins/directshow/camera/dsimagecapturecontrol.h b/src/plugins/directshow/camera/dsimagecapturecontrol.h
index e39539191..af8765943 100644
--- a/src/plugins/directshow/camera/dsimagecapturecontrol.h
+++ b/src/plugins/directshow/camera/dsimagecapturecontrol.h
@@ -52,23 +52,18 @@ class DSImageCaptureControl : public QCameraImageCaptureControl
     Q_OBJECT
 public:
     DSImageCaptureControl(DSCameraSession *session);
-    virtual ~DSImageCaptureControl();
+    ~DSImageCaptureControl();
 
     bool isReadyForCapture() const;
     int capture(const QString &fileName);
 
-    virtual QCameraImageCapture::DriveMode driveMode() const { return QCameraImageCapture::SingleImageCapture; }
-    virtual void setDriveMode(QCameraImageCapture::DriveMode mode) { Q_UNUSED(mode) }
-
-    virtual void cancelCapture() {}
-
-private slots:
-    void updateState();
+    QCameraImageCapture::DriveMode driveMode() const;
+    void setDriveMode(QCameraImageCapture::DriveMode mode);
 
+    void cancelCapture() {}
 
 private:
     DSCameraSession *m_session;
-    bool m_ready;
 };
 
 QT_END_NAMESPACE