[PATCH v3 1/8] 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 | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/dlls/mf/session.c b/dlls/mf/session.c
index 483ea6f904f..a9213d2cf18 100644
--- a/dlls/mf/session.c
+++ b/dlls/mf/session.c
@@ -1014,8 +1014,13 @@ static void session_flush_nodes(struct media_session *session)
     {
         if (node->type == MF_TOPOLOGY_OUTPUT_NODE)
             IMFStreamSink_Flush(node->object.sink_stream);
-        else if (node->type == MF_TOPOLOGY_TRANSFORM_NODE)
+        else if (node->type == MF_TOPOLOGY_TRANSFORM_NODE) {
+            UINT i;
+            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);
+        }
     }
 }