[PATCH 4/5] amstream: Unblock GetBuffer() in Decommit().

[Elizabeth Figura]

From: Elizabeth Figura

---
 dlls/amstream/ddrawstream.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/dlls/amstream/ddrawstream.c b/dlls/amstream/ddrawstream.c
index a8974a786e7..cbd88187e1b 100644
--- a/dlls/amstream/ddrawstream.c
+++ b/dlls/amstream/ddrawstream.c
@@ -1456,6 +1456,7 @@ static HRESULT WINAPI ddraw_mem_allocator_Decommit(IMemAllocator *iface)

EnterCriticalSection(&stream->cs);
     stream->committed = false;
+    WakeAllConditionVariable(&stream->allocator_cv);
     /* We have nothing to actually decommit; all of our samples are created by
      * CreateSample(). */
     LeaveCriticalSection(&stream->cs);
@@ -1487,15 +1488,15 @@ static HRESULT WINAPI ddraw_mem_allocator_GetBuffer(IMemAllocator *iface,

EnterCriticalSection(&stream->cs);

+    while (stream->committed && !(sample = get_pending_sample(stream)))
+        SleepConditionVariableCS(&stream->allocator_cv, &stream->cs, INFINITE);
+
     if (!stream->committed)
     {
         LeaveCriticalSection(&stream->cs);
         return VFW_E_NOT_COMMITTED;
     }

-    while (!(sample = get_pending_sample(stream)))
-        SleepConditionVariableCS(&stream->allocator_cv, &stream->cs, INFINITE);
-
     sample->surface_desc.dwSize = sizeof(DDSURFACEDESC);
     if ((FAILED(hr = IDirectDrawSurface_Lock(sample->surface,
             &sample->rect, &sample->surface_desc, DDLOCK_WAIT, NULL))))