WMF: fixed compilation on Windows Vista.

We were using one function which is available only on Windows 7 (and
later). Replace it with Vista-compatible calls.

Task-number: QTBUG-32864
Change-Id: I77492a407330c3689dfbf8dc1180894cf7ca5f8d
Reviewed-by: Christian Stromme <christian.stromme@digia.com>

1 files changed, 16 insertions, 5 deletions

diff --git a/src/plugins/wmf/player/mfplayersession.cpp b/src/plugins/wmf/player/mfplayersession.cpp
index 4e4b56589..cca42e2ff 100644
--- a/src/plugins/wmf/player/mfplayersession.cpp
+++ b/src/plugins/wmf/player/mfplayersession.cpp
@@ -1875,11 +1875,22 @@ void MFPlayerSession::handleSessionEvent(IMFMediaEvent *sessionEvent)
             emit error(QMediaPlayer::FormatError, tr("Unsupported media, a codec is missing."), true);
         } else {
             if (m_audioSampleGrabberNode) {
-                IMFMediaType *mediaType = 0;
-                hr = MFGetTopoNodeCurrentType(m_audioSampleGrabberNode, 0, FALSE, &mediaType);
-                if (SUCCEEDED(hr)) {
-                    m_audioSampleGrabber->setFormat(audioFormatForMFMediaType(mediaType));
-                    mediaType->Release();
+                IUnknown *obj = 0;
+                if (SUCCEEDED(m_audioSampleGrabberNode->GetObject(&obj))) {
+                    IMFStreamSink *streamSink = 0;
+                    if (SUCCEEDED(obj->QueryInterface(IID_PPV_ARGS(&streamSink)))) {
+                        IMFMediaTypeHandler *typeHandler = 0;
+                        if (SUCCEEDED(streamSink->GetMediaTypeHandler((&typeHandler)))) {
+                            IMFMediaType *mediaType = 0;
+                            if (SUCCEEDED(typeHandler->GetCurrentMediaType(&mediaType))) {
+                                m_audioSampleGrabber->setFormat(audioFormatForMFMediaType(mediaType));
+                                mediaType->Release();
+                            }
+                            typeHandler->Release();
+                        }
+                        streamSink->Release();
+                    }
+                    obj->Release();
                 }
             }