WMF: re-enabled video probes and made it more robust.

Fixed the way the custom MF Transform (getting the frames) works:
- Recreate it whenever we load a new media
- During media type negotiation between nodes, the MFT should support
  the same types as the video sink supports
- Allow input and output types to be changed as many times as needed,
  otherwise the topology cannot be resolved in some cases

Change-Id: I7ca77e1a3dee83643f1a97f2e6ada9c5c0e88309
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

1 files changed, 5 insertions, 6 deletions

diff --git a/src/plugins/wmf/player/mfplayerservice.cpp b/src/plugins/wmf/player/mfplayerservice.cpp
index 5bda9f983..ea06031ff 100644
--- a/src/plugins/wmf/player/mfplayerservice.cpp
+++ b/src/plugins/wmf/player/mfplayerservice.cpp
@@ -116,12 +116,11 @@ QMediaControl* MFPlayerService::requestControl(const char *name)
         }
         return 0;
     } else if (qstrcmp(name,QMediaVideoProbeControl_iid) == 0) {
-        // FIXME!! Disabled in Qt 5.0 because it is unstable
-//        if (m_session) {
-//            MFVideoProbeControl *probe = new MFVideoProbeControl(this);
-//            m_session->addProbe(probe);
-//            return probe;
-//        }
+        if (m_session) {
+            MFVideoProbeControl *probe = new MFVideoProbeControl(this);
+            m_session->addProbe(probe);
+            return probe;
+        }
         return 0;
     }