[PATCH 2/6] winegstreamer/color_converter: Support clearing media types.

[Ziqing Hui]

From: Ziqing Hui

---
 dlls/winegstreamer/color_convert.c | 32 ++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/dlls/winegstreamer/color_convert.c b/dlls/winegstreamer/color_convert.c
index 4b60628e8ba..21d2aa67e64 100644
--- a/dlls/winegstreamer/color_convert.c
+++ b/dlls/winegstreamer/color_convert.c
@@ -360,6 +360,22 @@ static HRESULT WINAPI transform_SetInputType(IMFTransform *iface, DWORD id, IMFM

TRACE("iface %p, id %#lx, type %p, flags %#lx.\n", iface, id, type, flags);

+    if (!type)
+    {
+        if (impl->input_type)
+        {
+            IMFMediaType_Release(impl->input_type);
+            impl->input_type = NULL;
+        }
+        if (impl->wg_transform)
+        {
+            wg_transform_destroy(impl->wg_transform);
+            impl->wg_transform = 0;
+        }
+
+        return S_OK;
+    }
+
     if (FAILED(hr = IMFMediaType_GetGUID(type, &MF_MT_MAJOR_TYPE, &major)) ||
             FAILED(hr = IMFMediaType_GetGUID(type, &MF_MT_SUBTYPE, &subtype)))
         return MF_E_ATTRIBUTENOTFOUND;
@@ -422,6 +438,22 @@ static HRESULT WINAPI transform_SetOutputType(IMFTransform *iface, DWORD id, IMF

TRACE("iface %p, id %#lx, type %p, flags %#lx.\n", iface, id, type, flags);

+    if (!type)
+    {
+        if (impl->output_type)
+        {
+            IMFMediaType_Release(impl->output_type);
+            impl->output_type = NULL;
+        }
+        if (impl->wg_transform)
+        {
+            wg_transform_destroy(impl->wg_transform);
+            impl->wg_transform = 0;
+        }
+
+        return S_OK;
+    }
+
     if (FAILED(hr = IMFMediaType_GetGUID(type, &MF_MT_MAJOR_TYPE, &major)) ||
             FAILED(hr = IMFMediaType_GetGUID(type, &MF_MT_SUBTYPE, &subtype)))
         return MF_E_ATTRIBUTENOTFOUND;