DirectShow: Add exposure control

Makes it possible to manually control the shutter speed and/or the
aperture on cameras that supports it.

[ChangeLog][DirectShow] Added support for manual camera exposure control

Change-Id: I340964f899fec365df870834b230c1d743ceb2e8
Reviewed-by: Andy Shaw <andy.shaw@qt.io>

1 files changed, 12 insertions, 6 deletions

diff --git a/src/plugins/directshow/camera/dscameraservice.cpp b/src/plugins/directshow/camera/dscameraservice.cpp
index 836f1aaa5..c11111be1 100644
--- a/src/plugins/directshow/camera/dscameraservice.cpp
+++ b/src/plugins/directshow/camera/dscameraservice.cpp
@@ -48,19 +48,21 @@
 #include "dsimagecapturecontrol.h"
 #include "dscameraviewfindersettingscontrol.h"
 #include "dscameraimageprocessingcontrol.h"
+#include "directshowcameraexposurecontrol.h"
 
 QT_BEGIN_NAMESPACE
 
 DSCameraService::DSCameraService(QObject *parent):
     QMediaService(parent)
+  , m_session(new DSCameraSession(this))
+  , m_control(new DSCameraControl(m_session))
+  , m_videoDevice(new DSVideoDeviceControl(m_session))
   , m_videoRenderer(0)
+  , m_imageCapture(new DSImageCaptureControl(m_session))
+  , m_viewfinderSettings(new DSCameraViewfinderSettingsControl(m_session))
+  , m_imageProcessingControl(new DSCameraImageProcessingControl(m_session))
+  , m_exposureControl(new DirectShowCameraExposureControl(m_session))
 {
-    m_session = new DSCameraSession(this);
-    m_control = new DSCameraControl(m_session);
-    m_videoDevice = new DSVideoDeviceControl(m_session);
-    m_imageCapture = new DSImageCaptureControl(m_session);
-    m_viewfinderSettings = new DSCameraViewfinderSettingsControl(m_session);
-    m_imageProcessingControl = new DSCameraImageProcessingControl(m_session);
 }
 
 DSCameraService::~DSCameraService()
@@ -72,6 +74,7 @@ DSCameraService::~DSCameraService()
     delete m_videoRenderer;
     delete m_imageCapture;
     delete m_session;
+    delete m_exposureControl;
 }
 
 QMediaControl* DSCameraService::requestControl(const char *name)
@@ -98,6 +101,9 @@ QMediaControl* DSCameraService::requestControl(const char *name)
     if (qstrcmp(name, QCameraImageProcessingControl_iid) == 0)
         return m_imageProcessingControl;
 
+    if (qstrcmp(name, QCameraExposureControl_iid) == 0)
+        return m_exposureControl;
+
     return 0;
 }