[PATCH 4/8] mf: Support thinning in media session.

[Charlotte Pabst]

From: Charlotte Pabst

---
 dlls/mf/session.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/dlls/mf/session.c b/dlls/mf/session.c
index a9213d2cf18..823388c3065 100644
--- a/dlls/mf/session.c
+++ b/dlls/mf/session.c
@@ -260,6 +260,8 @@ struct media_session
         /* Latest SetRate() arguments. */
         BOOL thin;
         float rate;
+
+        BOOL thin_committed;
     } presentation;
     struct list topologies;
     struct list commands;
@@ -1540,7 +1542,7 @@ static void session_set_rate(struct media_session *session, BOOL thin, float rat
     if (SUCCEEDED(hr))
         hr = IMFRateControl_GetRate(session->clock_rate_control, NULL, &clock_rate);

-    if (SUCCEEDED(hr) && (rate != clock_rate) && SUCCEEDED(hr = session_subscribe_sources(session)))
+    if (SUCCEEDED(hr) && (rate != clock_rate || thin != session->presentation.thin_committed) && SUCCEEDED(hr = session_subscribe_sources(session)))
     {
         LIST_FOR_EACH_ENTRY(source, &session->presentation.sources, struct media_source, entry)
         {
@@ -1553,6 +1555,7 @@ static void session_set_rate(struct media_session *session, BOOL thin, float rat
                 {
                     session->presentation.flags |= SESSION_FLAG_PENDING_RATE_CHANGE;
                     session->presentation.rate = rate;
+                    session->presentation.thin = thin;
                     return;
                 }
             }
@@ -1577,7 +1580,8 @@ static void session_complete_rate_change(struct media_session *session)
     session->presentation.flags &= ~SESSION_FLAG_PENDING_RATE_CHANGE;
     session_set_presentation_clock(session);

-    hr = IMFRateControl_SetRate(session->clock_rate_control, session->presentation.thin,
+    session->presentation.thin_committed = session->presentation.thin;
+    hr = IMFRateControl_SetRate(session->clock_rate_control, FALSE,
             session->presentation.rate);

param.vt = VT_R4;
@@ -4742,7 +4746,10 @@ static HRESULT WINAPI session_rate_control_GetRate(IMFRateControl *iface, BOOL *

TRACE("%p, %p, %p.\n", iface, thin, rate);

-    return IMFRateControl_GetRate(session->clock_rate_control, thin, rate);
+    if (thin)
+        *thin = session->presentation.thin_committed;
+
+    return IMFRateControl_GetRate(session->clock_rate_control, NULL, rate);
 }

static const IMFRateControlVtbl session_rate_control_vtbl =