Zebediah Figura : strmbase: Check if the pin is already connected in source_Connect().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: d1897cf96ba3041e17416f618197302c996c8115
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=d1897cf96ba3041e17416f618...

Author: Zebediah Figura <z.figura12(a)gmail.com>
Date:   Wed Feb  5 19:50:07 2020 -0600

strmbase: Check if the pin is already connected in source_Connect().

Signed-off-by: Zebediah Figura <z.figura12(a)gmail.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/strmbase/pin.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dlls/strmbase/pin.c b/dlls/strmbase/pin.c
index 90064c25d4..18631410b7 100644
--- a/dlls/strmbase/pin.c
+++ b/dlls/strmbase/pin.c
@@ -463,6 +463,13 @@ static HRESULT WINAPI source_Connect(IPin *iface, IPin *peer, const AM_MEDIA_TYP
 
     EnterCriticalSection(&pin->pin.filter->csFilter);
 
+    if (pin->pin.peer)
+    {
+        LeaveCriticalSection(&pin->pin.filter->csFilter);
+        WARN("Pin is already connected, returning VFW_E_ALREADY_CONNECTED.\n");
+        return VFW_E_ALREADY_CONNECTED;
+    }
+
     if (pin->pin.filter->state != State_Stopped)
     {
         LeaveCriticalSection(&pin->pin.filter->csFilter);