From 4615f4db3ad665957995c574236072a7abb4eb67 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20M=C3=BCller?= <michael@fds-team.de>
Date: Mon, 8 May 2017 22:50:38 +0000
Subject: [PATCH] mfplat: Implement MFTUnregister.

Signed-off-by: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 dlls/mfplat/main.c      | 38 ++++++++++++++++++++++++++++++++++++++
 dlls/mfplat/mfplat.spec |  2 +-
 include/mfapi.h         |  1 +
 3 files changed, 40 insertions(+), 1 deletion(-)

diff --git a/dlls/mfplat/main.c b/dlls/mfplat/main.c
index 19e3cab605a..b54dc9d8d29 100644
--- a/dlls/mfplat/main.c
+++ b/dlls/mfplat/main.c
@@ -163,6 +163,44 @@ HRESULT WINAPI MFTRegister(CLSID clsid, GUID category, LPWSTR name, UINT32 flags
     return hr;
 }
 
+/***********************************************************************
+ *      MFTUnregister (mfplat.@)
+ */
+HRESULT WINAPI MFTUnregister(CLSID clsid)
+{
+    WCHAR buffer[64], category[MAX_PATH];
+    HKEY htransform, hcategory, htmp;
+    DWORD size = MAX_PATH;
+    DWORD index = 0;
+
+    TRACE("(%s)\n", debugstr_guid(&clsid));
+
+    GUIDToString(buffer, &clsid);
+
+    if (!RegOpenKeyW(HKEY_CLASSES_ROOT, transform_keyW, &htransform))
+    {
+        RegDeleteKeyW(htransform, buffer);
+        RegCloseKey(htransform);
+    }
+
+    if (!RegOpenKeyW(HKEY_CLASSES_ROOT, categories_keyW, &hcategory))
+    {
+        while (RegEnumKeyExW(hcategory, index, category, &size, NULL, NULL, NULL, NULL) == ERROR_SUCCESS)
+        {
+            if (!RegOpenKeyW(hcategory, category, &htmp))
+            {
+                RegDeleteKeyW(htmp, buffer);
+                RegCloseKey(htmp);
+            }
+            size = MAX_PATH;
+            index++;
+        }
+        RegCloseKey(hcategory);
+    }
+
+    return S_OK;
+}
+
 /***********************************************************************
  *      MFStartup (mfplat.@)
  */
diff --git a/dlls/mfplat/mfplat.spec b/dlls/mfplat/mfplat.spec
index 042a9199f36..dc6f4029b90 100644
--- a/dlls/mfplat/mfplat.spec
+++ b/dlls/mfplat/mfplat.spec
@@ -140,7 +140,7 @@
 @ stdcall MFTRegister(int128 int128 wstr long long ptr long ptr ptr)
 @ stub MFTRegisterLocal
 @ stub MFTRegisterLocalByCLSID
-@ stub MFTUnregister
+@ stdcall MFTUnregister(int128)
 @ stub MFTUnregisterLocal
 @ stub MFTUnregisterLocalByCLSID
 @ stub MFTraceError
diff --git a/include/mfapi.h b/include/mfapi.h
index 2eca9c32dee..a37d6559286 100644
--- a/include/mfapi.h
+++ b/include/mfapi.h
@@ -39,6 +39,7 @@ HRESULT WINAPI MFTRegister(CLSID clsid, GUID category, LPWSTR name, UINT32 flags
 HRESULT WINAPI MFShutdown(void);
 HRESULT WINAPI MFStartup(ULONG version, DWORD flags);
 HRESULT WINAPI MFUnlockPlatform(void);
+HRESULT WINAPI MFTUnregister(CLSID clsid);
 HRESULT WINAPI MFGetPluginControl(IMFPluginControl**);
 
 #endif /* __WINE_MFAPI_H */