1 files changed, 6 insertions, 10 deletions
diff --git a/Source/WebCore/platform/graphics/win/MediaPlayerPrivateMediaFoundation.cpp b/Source/WebCore/platform/graphics/win/MediaPlayerPrivateMediaFoundation.cpp
index 98f2ec964..a56a47a3e 100644
--- a/Source/WebCore/platform/graphics/win/MediaPlayerPrivateMediaFoundation.cpp
+++ b/Source/WebCore/platform/graphics/win/MediaPlayerPrivateMediaFoundation.cpp
@@ -193,15 +193,6 @@ void MediaPlayerPrivateMediaFoundation::cancelLoad()
     notImplemented();
 }
 
-void MediaPlayerPrivateMediaFoundation::prepareToPlay()
-{
-    // We call startSession() to start buffering video data.
-    // When we have received enough data, we pause, so that we don't actually start the playback.
-    ASSERT(m_paused);
-    ASSERT(!m_preparingToPlay);
-    m_preparingToPlay = startSession();
-}
-
 void MediaPlayerPrivateMediaFoundation::play()
 {
     m_paused = !startSession();
@@ -937,7 +928,11 @@ void MediaPlayerPrivateMediaFoundation::onTopologySet()
     }
 
     // It is expected that we start buffering data from the network now.
-    prepareToPlay();
+    // We call startSession() to start buffering video data.
+    // When we have received enough data, we pause, so that we don't actually start the playback.
+    ASSERT(m_paused);
+    ASSERT(!m_preparingToPlay);
+    m_preparingToPlay = startSession();
 }
 
 void MediaPlayerPrivateMediaFoundation::onBufferingStarted()
@@ -2920,6 +2915,7 @@ HRESULT MediaPlayerPrivateMediaFoundation::Direct3DPresenter::presentSample(IMFS
                 D3DSURFACE_DESC desc;
                 if (SUCCEEDED(surface->GetDesc(&desc)))
                     format = desc.Format;
+                m_memSurface.clear();
                 hr = m_device->CreateOffscreenPlainSurface(width, height, format, D3DPOOL_SYSTEMMEM, &m_memSurface, nullptr);
                 m_width = width;
                 m_height = height;