quartz/vmr9: Render preroll samples.

dlls/quartz/tests/vmr7.c

@@ -983,6 +983,9 @@ static HANDLE send_frame(IMemInputPin *sink)
     hr = IMediaSample_SetTime(sample, &start_time, &end_time);
     ok(hr == S_OK, "Got hr %#x.\n", hr);
 
+    hr = IMediaSample_SetPreroll(sample, TRUE);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
     params->sink = sink;
     params->sample = sample;
     thread = CreateThread(NULL, 0, frame_thread, params, 0, NULL);

dlls/quartz/tests/vmr9.c

@@ -1011,6 +1011,9 @@ static HANDLE send_frame_time(IMemInputPin *sink, REFERENCE_TIME start_time, DWO
     hr = IMediaSample_SetTime(sample, &start_time, &end_time);
     ok(hr == S_OK, "Got hr %#x.\n", hr);
 
+    hr = IMediaSample_SetPreroll(sample, TRUE);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
+
     params->sink = sink;
     params->sample = sample;
     thread = CreateThread(NULL, 0, frame_thread, params, 0, NULL);

dlls/quartz/vmr9.c

@@ -244,12 +244,6 @@ static HRESULT WINAPI VMR9_DoRenderSample(struct strmbase_renderer *iface, IMedi
     if (IMediaSample_IsSyncPoint(sample) == S_OK)
         info.dwFlags |= VMR9Sample_SyncPoint;
 
-    /* If we render ourselves, and this is a preroll sample, discard it */
-    if (info.dwFlags & VMR9Sample_Preroll)
-    {
-        return S_OK;
-    }
-
     if (FAILED(hr = IMediaSample_GetPointer(sample, &data)))
     {
         ERR("Failed to get pointer to sample data, hr %#x.\n", hr);
@@ -504,15 +498,6 @@ static void vmr_stop_stream(struct strmbase_renderer *iface)
     ResetEvent(This->run_event);
 }
 
-static HRESULT WINAPI VMR9_ShouldDrawSampleNow(struct strmbase_renderer *iface,
-        IMediaSample *pSample, REFERENCE_TIME *start, REFERENCE_TIME *end)
-{
-    /* Preroll means the sample isn't shown, this is used for key frames and things like that */
-    if (IMediaSample_IsPreroll(pSample) == S_OK)
-        return E_FAIL;
-    return S_FALSE;
-}
-
 static HRESULT vmr_connect(struct strmbase_renderer *iface, const AM_MEDIA_TYPE *mt)
 {
     struct quartz_vmr *filter = impl_from_IBaseFilter(&iface->filter.IBaseFilter_iface);
@@ -668,7 +653,6 @@ static const struct strmbase_renderer_ops renderer_ops =
     .renderer_init_stream = vmr_init_stream,
     .renderer_start_stream = vmr_start_stream,
     .renderer_stop_stream = vmr_stop_stream,
-    .pfnShouldDrawSampleNow = VMR9_ShouldDrawSampleNow,
     .renderer_connect = vmr_connect,
     .pfnBreakConnect = VMR9_BreakConnect,
     .renderer_destroy = vmr_destroy,