Maarten Lankhorst : quartz: Make the video renderer drop preroll samples.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 458b09a84dc168ca4a1cde927226b93ba4afff2a
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=458b09a84dc168ca4a1cde9272...

Author: Maarten Lankhorst <m.b.lankhorst(a)gmail.com>
Date:   Thu Apr 17 11:16:13 2008 -0700

quartz: Make the video renderer drop preroll samples.

---

 dlls/quartz/videorenderer.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/dlls/quartz/videorenderer.c b/dlls/quartz/videorenderer.c
index 48faf55..5179bd0 100644
--- a/dlls/quartz/videorenderer.c
+++ b/dlls/quartz/videorenderer.c
@@ -362,6 +362,10 @@ static HRESULT VideoRenderer_Sample(LPVOID iface, IMediaSample * pSample)
 
     TRACE("%p %p\n", iface, pSample);
 
+    /* Preroll means the sample isn't shown, this is used for key frames and things like that */
+    if (IMediaSample_IsPreroll(pSample) == S_OK)
+        return S_OK;
+
     hr = IMediaSample_GetPointer(pSample, &pbSrcStream);
     if (FAILED(hr))
     {