Ziqing Hui : winegstreamer/color_converter: Support clearing media types.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: c34eb9693346d1cfa071db53a28e8c3283dd1aa2
URL:    https://gitlab.winehq.org/wine/wine/-/commit/c34eb9693346d1cfa071db53a28e8c3...

Author: Ziqing Hui <zhui(a)codeweavers.com>
Date:   Wed Jun 26 16:27:44 2024 +0800

winegstreamer/color_converter: Support clearing media types.

---

 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;