[PATCH 4/5] quartz: Implement IBasicVideo::IsUsingDefaultSource().

[Zebediah Figura]

Signed-off-by: Zebediah Figura 
---
 dlls/quartz/window.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/dlls/quartz/window.c b/dlls/quartz/window.c
index efafb70daa8..a5ff4979efc 100644
--- a/dlls/quartz/window.c
+++ b/dlls/quartz/window.c
@@ -1155,9 +1155,16 @@ static HRESULT WINAPI basic_video_GetCurrentImage(IBasicVideo *iface, LONG *size

static HRESULT WINAPI basic_video_IsUsingDefaultSource(IBasicVideo *iface)
 {
-    FIXME("iface %p, stub!\n", iface);
+    struct video_window *window = impl_from_IBasicVideo(iface);
+    const BITMAPINFOHEADER *bitmap_header = get_bitmap_header(window);

-    return S_OK;
+    TRACE("window %p.\n", window);
+
+    if (!window->src.left && !window->src.top
+            && window->src.right == bitmap_header->biWidth
+            && window->src.bottom == bitmap_header->biHeight)
+        return S_OK;
+    return S_FALSE;
 }

static HRESULT WINAPI basic_video_IsUsingDefaultDestination(IBasicVideo *iface)