[PATCH 2/3] amstream: Keep a reference on the source filter.

[Rémi Bernon]

From: Rémi Bernon

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53748
---
 dlls/amstream/multimedia.c | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/dlls/amstream/multimedia.c b/dlls/amstream/multimedia.c
index dc855901c77..90c0b0a54b5 100644
--- a/dlls/amstream/multimedia.c
+++ b/dlls/amstream/multimedia.c
@@ -38,6 +38,7 @@ struct multimedia_stream
     IMediaSeeking* media_seeking;
     IMediaControl* media_control;
     IMediaStreamFilter *filter;
+    IBaseFilter *source;
     IPin* ipin;
     BOOL initialized;
     STREAM_TYPE type;
@@ -90,6 +91,8 @@ static ULONG WINAPI multimedia_stream_Release(IAMMultiMediaStream *iface)

if (!ref)
     {
+        if (This->source)
+            IBaseFilter_Release(This->source);
         if (This->ipin)
             IPin_Release(This->ipin);
         IMediaStreamFilter_Release(This->filter);
@@ -431,7 +434,6 @@ static HRESULT WINAPI multimedia_stream_OpenFile(IAMMultiMediaStream *iface,
 {
     struct multimedia_stream *This = impl_from_IAMMultiMediaStream(iface);
     HRESULT ret = S_OK;
-    IBaseFilter *BaseFilter = NULL;
     IEnumPins *EnumPins = NULL;
     IPin *ipin;
     PIN_DIRECTION pin_direction;
@@ -449,11 +451,17 @@ static HRESULT WINAPI multimedia_stream_OpenFile(IAMMultiMediaStream *iface,
             ret = create_graph(This, NULL);
     }

+    if (This->source)
+    {
+        IBaseFilter_Release(This->source);
+        This->source = NULL;
+    }
+
     if (SUCCEEDED(ret))
-        ret = IGraphBuilder_AddSourceFilter(This->graph, filename, L"Source", &BaseFilter);
+        ret = IGraphBuilder_AddSourceFilter(This->graph, filename, L"Source", &This->source);

if (SUCCEEDED(ret))
-        ret = IBaseFilter_EnumPins(BaseFilter, &EnumPins);
+        ret = IBaseFilter_EnumPins(This->source, &EnumPins);

if (SUCCEEDED(ret))
         ret = IEnumPins_Next(EnumPins, 1, &ipin, NULL);
@@ -504,8 +512,6 @@ static HRESULT WINAPI multimedia_stream_OpenFile(IAMMultiMediaStream *iface,

if (EnumPins)
         IEnumPins_Release(EnumPins);
-    if (BaseFilter)
-        IBaseFilter_Release(BaseFilter);
     return ret;
 }