[PATCH 7/7] quartz: Correct return value handling in IMediaSeeking::GetDuration().

[Zebediah Figura]

Signed-off-by: Zebediah Figura 
---
 dlls/quartz/filtergraph.c       | 53 +++++++++++++++++++--------------
 dlls/quartz/tests/filtergraph.c |  4 +--
 2 files changed, 33 insertions(+), 24 deletions(-)

diff --git a/dlls/quartz/filtergraph.c b/dlls/quartz/filtergraph.c
index b3aebabbdad..fb0890fda1f 100644
--- a/dlls/quartz/filtergraph.c
+++ b/dlls/quartz/filtergraph.c
@@ -2237,36 +2237,45 @@ static HRESULT WINAPI MediaSeeking_SetTimeFormat(IMediaSeeking *iface, const GUI
     return S_OK;
 }

-static HRESULT WINAPI FoundDuration(struct filter_graph *This, IMediaSeeking *seek, DWORD_PTR pduration)
+static HRESULT WINAPI MediaSeeking_GetDuration(IMediaSeeking *iface, LONGLONG *duration)
 {
-    HRESULT hr;
-    LONGLONG duration = 0, *pdur = (LONGLONG*)pduration;
+    struct filter_graph *graph = impl_from_IMediaSeeking(iface);
+    HRESULT hr = E_NOTIMPL, filter_hr;
+    LONGLONG filter_duration;
+    struct filter *filter;

-    hr = IMediaSeeking_GetDuration(seek, &duration);
-    if (FAILED(hr))
-        return hr;
+    TRACE("graph %p, duration %p.\n", graph, duration);

-    if (*pdur < duration)
-        *pdur = duration;
-    return hr;
-}
+    if (!duration)
+        return E_POINTER;

-static HRESULT WINAPI MediaSeeking_GetDuration(IMediaSeeking *iface, LONGLONG *pDuration)
-{
-    struct filter_graph *This = impl_from_IMediaSeeking(iface);
-    HRESULT hr;
+    *duration = 0;

-    TRACE("(%p/%p)->(%p)\n", This, iface, pDuration);
+    EnterCriticalSection(&graph->cs);

-    if (!pDuration)
-        return E_POINTER;
+    LIST_FOR_EACH_ENTRY(filter, &graph->filters, struct filter, entry)
+    {
+        update_seeking(filter);
+        if (!filter->seeking)
+            continue;

-    EnterCriticalSection(&This->cs);
-    *pDuration = 0;
-    hr = all_renderers_seek(This, FoundDuration, (DWORD_PTR)pDuration);
-    LeaveCriticalSection(&This->cs);
+        filter_hr = IMediaSeeking_GetDuration(filter->seeking, &filter_duration);
+        if (SUCCEEDED(filter_hr))
+        {
+            hr = S_OK;
+            *duration = max(*duration, filter_duration);
+        }
+        else if (filter_hr != E_NOTIMPL)
+        {
+            LeaveCriticalSection(&graph->cs);
+            return filter_hr;
+        }
+    }
+
+    LeaveCriticalSection(&graph->cs);

-    TRACE("--->%08x\n", hr);
+    TRACE("Returning hr %#x, duration %s (%s seconds).\n", hr,
+            wine_dbgstr_longlong(*duration), debugstr_time(*duration));
     return hr;
 }

diff --git a/dlls/quartz/tests/filtergraph.c b/dlls/quartz/tests/filtergraph.c
index 853155ab100..b6e68f3f6b9 100644
--- a/dlls/quartz/tests/filtergraph.c
+++ b/dlls/quartz/tests/filtergraph.c
@@ -4401,13 +4401,13 @@ static void test_graph_seeking(void)

filter1.seek_hr = filter2.seek_hr = 0xbeef;
     hr = IMediaSeeking_GetDuration(seeking, &time);
-    todo_wine ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
     ok(time == 0x23456, "Got time %s.\n", wine_dbgstr_longlong(time));

filter1.seek_hr = E_NOTIMPL;
     filter2.seek_hr = S_OK;
     hr = IMediaSeeking_GetDuration(seeking, &time);
-    todo_wine ok(hr == S_OK, "Got hr %#x.\n", hr);
+    ok(hr == S_OK, "Got hr %#x.\n", hr);
     ok(time == 0x12345, "Got time %s.\n", wine_dbgstr_longlong(time));

filter1.seek_hr = 0xdeadbeef;