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

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

strmbase: Check if the pin is already connected in source_Connect().
d1897cf9 · Zebediah Figura · Alexandre Julliard · 09b0d9d4 · d1897cf9
Commit d1897cf9 authored Feb 05, 2020 by Zebediah Figura Committed by Alexandre Julliard Feb 06, 2020
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pin.c dlls/strmbase/pin.c +7 -0

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--- 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);