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, 0 insertions, 2 deletions

diff --git a/src/plugins/directshow/camera/dsvideodevicecontrol.cpp b/src/plugins/directshow/camera/dsvideodevicecontrol.cpp
index ead1060d4..28d4956dd 100644
--- a/src/plugins/directshow/camera/dsvideodevicecontrol.cpp
+++ b/src/plugins/directshow/camera/dsvideodevicecontrol.cpp
@@ -102,7 +102,6 @@ void DSVideoDeviceControl::enumerateDevices(QList<QByteArray> *devices, QStringL
     devices->clear();
     descriptions->clear();
 
-    CoInitialize(NULL);
     ICreateDevEnum* pDevEnum = NULL;
     IEnumMoniker* pEnum = NULL;
     // Create the System device enumerator
@@ -148,7 +147,6 @@ void DSVideoDeviceControl::enumerateDevices(QList<QByteArray> *devices, QStringL
         }
         pDevEnum->Release();
     }
-    CoUninitialize();
 }
 
 void DSVideoDeviceControl::setSelectedDevice(int index)