[PATCH 4/6] mf: Move locking from individual command helpers to command callback.

[Nikolay Sivov]

Signed-off-by: Nikolay Sivov 
---
 dlls/mf/session.c | 27 ++++-----------------------
 1 file changed, 4 insertions(+), 23 deletions(-)

diff --git a/dlls/mf/session.c b/dlls/mf/session.c
index 26ea34b441..7b479dbfd7 100644
--- a/dlls/mf/session.c
+++ b/dlls/mf/session.c
@@ -769,8 +769,6 @@ static void session_start(struct media_session *session, const GUID *time_format
     struct media_source *source;
     HRESULT hr;

-    EnterCriticalSection(&session->cs);
-
     switch (session->state)
     {
         case SESSION_STATE_STOPPED:
@@ -808,8 +806,6 @@ static void session_start(struct media_session *session, const GUID *time_format
         default:
             ;
     }
-
-    LeaveCriticalSection(&session->cs);
 }

static void session_set_paused(struct media_session *session, HRESULT status)
@@ -832,8 +828,6 @@ static void session_pause(struct media_session *session)
 {
     HRESULT hr;

-    EnterCriticalSection(&session->cs);
-
     switch (session->state)
     {
         case SESSION_STATE_STARTED:
@@ -849,8 +843,6 @@ static void session_pause(struct media_session *session)

if (FAILED(hr))
         session_set_paused(session, hr);
-
-    LeaveCriticalSection(&session->cs);
 }

static void session_set_stopped(struct media_session *session, HRESULT status)
@@ -873,8 +865,6 @@ static void session_stop(struct media_session *session)
 {
     HRESULT hr;

-    EnterCriticalSection(&session->cs);
-
     switch (session->state)
     {
         case SESSION_STATE_STARTED:
@@ -894,8 +884,6 @@ static void session_stop(struct media_session *session)
         default:
             ;
     }
-
-    LeaveCriticalSection(&session->cs);
 }

static HRESULT session_finalize_sinks(struct media_session *session)
@@ -933,8 +921,6 @@ static void session_close(struct media_session *session)
 {
     HRESULT hr = S_OK;

-    EnterCriticalSection(&session->cs);
-
     switch (session->state)
     {
         case SESSION_STATE_STOPPED:
@@ -955,8 +941,6 @@ static void session_close(struct media_session *session)

if (FAILED(hr))
         session_set_closed(session, hr);
-
-    LeaveCriticalSection(&session->cs);
 }

static struct media_source *session_get_media_source(struct media_session *session, IMFMediaSource *source)
@@ -1333,8 +1317,6 @@ static void session_set_topology(struct media_session *session, DWORD flags, IMF
         }
     }

-    EnterCriticalSection(&session->cs);
-
     if (flags & MFSESSION_SETTOPOLOGY_CLEAR_CURRENT)
     {
         if ((topology && topology == session->presentation.current_topology) || !topology)
@@ -1375,8 +1357,6 @@ static void session_set_topology(struct media_session *session, DWORD flags, IMF
         }
     }

-    LeaveCriticalSection(&session->cs);
-
     if (resolved_topology)
         IMFTopology_Release(resolved_topology);
 }
@@ -1791,13 +1771,12 @@ static HRESULT WINAPI session_commands_callback_Invoke(IMFAsyncCallback *iface,
     struct session_op *op = impl_op_from_IUnknown(IMFAsyncResult_GetStateNoAddRef(result));
     struct media_session *session = impl_from_commands_callback_IMFAsyncCallback(iface);

+    EnterCriticalSection(&session->cs);
+
     switch (op->command)
     {
         case SESSION_CMD_CLEAR_TOPOLOGIES:
-            EnterCriticalSection(&session->cs);
             session_clear_topologies(session);
-            LeaveCriticalSection(&session->cs);
-
             IMFMediaEventQueue_QueueEventParamVar(session->event_queue, MESessionTopologiesCleared, &GUID_NULL,
                     S_OK, NULL);
             break;
@@ -1820,6 +1799,8 @@ static HRESULT WINAPI session_commands_callback_Invoke(IMFAsyncCallback *iface,
             ;
     }

+    LeaveCriticalSection(&session->cs);
+
     return S_OK;
 }