[PATCH] mf/session: Handle MF_TOPONODE_DISABLE_PREROLL on sink nodes.

[Nikolay Sivov]

Signed-off-by: Nikolay Sivov <nsivov at codeweavers.com>
---
 dlls/mf/session.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/dlls/mf/session.c b/dlls/mf/session.c
index aa96ffd33ca..c2334f82d62 100644
--- a/dlls/mf/session.c
+++ b/dlls/mf/session.c
@@ -1232,6 +1232,7 @@ static DWORD session_get_object_rate_caps(IUnknown *object)
 static HRESULT session_add_media_sink(struct media_session *session, IMFTopologyNode *node, IMFMediaSink *sink)
 {
     struct media_sink *media_sink;
+    unsigned int disable_preroll = 0;
     DWORD flags;
 
     LIST_FOR_EACH_ENTRY(media_sink, &session->presentation.sinks, struct media_sink, entry)
@@ -1248,7 +1249,8 @@ static HRESULT session_add_media_sink(struct media_session *session, IMFTopology
 
     IMFMediaSink_QueryInterface(media_sink->sink, &IID_IMFMediaEventGenerator, (void **)&media_sink->event_generator);
 
-    if (SUCCEEDED(IMFMediaSink_GetCharacteristics(sink, &flags)) && flags & MEDIASINK_CAN_PREROLL)
+    IMFTopologyNode_GetUINT32(node, &MF_TOPONODE_DISABLE_PREROLL, &disable_preroll);
+    if (SUCCEEDED(IMFMediaSink_GetCharacteristics(sink, &flags)) && flags & MEDIASINK_CAN_PREROLL && !disable_preroll)
     {
         if (SUCCEEDED(IMFMediaSink_QueryInterface(media_sink->sink, &IID_IMFMediaSinkPreroll, (void **)&media_sink->preroll)))
             session->presentation.flags |= SESSION_FLAG_NEEDS_PREROLL;
-- 
2.30.2