[PATCH 3/4] quartz/dsoundrender: Clear the DirectSound buffer on EOS.

[Zebediah Figura]

"Zero Escape: Nine Hours, Nine Persons, Nine Doors" does not stop or destroy the
graph after it is finished running, so the last second of audio repeats
otherwise.

Signed-off-by: Zebediah Figura 
---
 dlls/quartz/dsoundrender.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dlls/quartz/dsoundrender.c b/dlls/quartz/dsoundrender.c
index a3155477fde..8b914751e15 100644
--- a/dlls/quartz/dsoundrender.c
+++ b/dlls/quartz/dsoundrender.c
@@ -477,6 +477,8 @@ static HRESULT dsound_render_sink_eos(struct strmbase_sink *iface)
     struct dsound_render *filter = impl_from_strmbase_pin(&iface->pin);
     IFilterGraph *graph = filter->filter.graph;
     IMediaEventSink *event_sink;
+    void *buffer;
+    DWORD size;

EnterCriticalSection(&filter->stream_cs);

@@ -494,6 +496,10 @@ static HRESULT dsound_render_sink_eos(struct strmbase_sink *iface)

DSoundRender_HandleEndOfStream(filter);

+    IDirectSoundBuffer_Lock(filter->dsbuffer, 0, 0, &buffer, &size, NULL, NULL, DSBLOCK_ENTIREBUFFER);
+    memset(buffer, 0, size);
+    IDirectSoundBuffer_Unlock(filter->dsbuffer, buffer, size, NULL, 0);
+
     LeaveCriticalSection(&filter->stream_cs);
     return S_OK;
 }