[PATCH v2 1/2] mf: Clear pending MFT stream requests when flushing.

[Charlotte Pabst]

From: Charlotte Pabst

Before this, stopping and restarting the media session
could cause MFT streams to get stuck in the "already pending"
state, which would lead to no more samples getting delivered.
---
 dlls/mf/session.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/dlls/mf/session.c b/dlls/mf/session.c
index 483ea6f904f..47760cc44a7 100644
--- a/dlls/mf/session.c
+++ b/dlls/mf/session.c
@@ -1009,13 +1009,19 @@ static HRESULT session_subscribe_sources(struct media_session *session)
 static void session_flush_nodes(struct media_session *session)
 {
     struct topo_node *node;
+    UINT i;

LIST_FOR_EACH_ENTRY(node, &session->presentation.nodes, struct topo_node, entry)
     {
         if (node->type == MF_TOPOLOGY_OUTPUT_NODE)
             IMFStreamSink_Flush(node->object.sink_stream);
         else if (node->type == MF_TOPOLOGY_TRANSFORM_NODE)
+        {
+            for (i = 0; i < node->u.transform.output_count; ++i)
+                node->u.transform.outputs[i].requests = 0;
+
             IMFTransform_ProcessMessage(node->object.transform, MFT_MESSAGE_COMMAND_FLUSH, 0);
+        }
     }
 }