[PATCH 5/5] mf: Implement prerolling for SAR stream.

Nikolay Sivov nsivov at codeweavers.com
Mon Apr 20 11:25:02 CDT 2020


Signed-off-by: Nikolay Sivov <nsivov at codeweavers.com>
---
 dlls/mf/sar.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/dlls/mf/sar.c b/dlls/mf/sar.c
index 93ecc6cb47..f476ca1b4a 100644
--- a/dlls/mf/sar.c
+++ b/dlls/mf/sar.c
@@ -387,6 +387,14 @@ static const IMFMediaSinkVtbl audio_renderer_sink_vtbl =
     audio_renderer_sink_Shutdown,
 };
 
+static void audio_renderer_preroll(struct audio_renderer *renderer)
+{
+    int i;
+
+    for (i = 0; i < 2; ++i)
+        IMFMediaEventQueue_QueueEventParamVar(renderer->stream_event_queue, MEStreamSinkRequestSample, &GUID_NULL, S_OK, NULL);
+}
+
 static HRESULT WINAPI audio_renderer_preroll_QueryInterface(IMFMediaSinkPreroll *iface, REFIID riid, void **obj)
 {
     struct audio_renderer *renderer = impl_from_IMFMediaSinkPreroll(iface);
@@ -407,9 +415,15 @@ static ULONG WINAPI audio_renderer_preroll_Release(IMFMediaSinkPreroll *iface)
 
 static HRESULT WINAPI audio_renderer_preroll_NotifyPreroll(IMFMediaSinkPreroll *iface, MFTIME start_time)
 {
-    FIXME("%p, %s.\n", iface, debugstr_time(start_time));
+    struct audio_renderer *renderer = impl_from_IMFMediaSinkPreroll(iface);
 
-    return E_NOTIMPL;
+    TRACE("%p, %s.\n", iface, debugstr_time(start_time));
+
+    if (renderer->is_shut_down)
+        return MF_E_SHUTDOWN;
+
+    audio_renderer_preroll(renderer);
+    return IMFMediaEventQueue_QueueEventParamVar(renderer->stream_event_queue, MEStreamSinkPrerolled, &GUID_NULL, S_OK, NULL);
 }
 
 static const IMFMediaSinkPrerollVtbl audio_renderer_preroll_vtbl =
-- 
2.26.1




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