Christian Costa : amstream: Cleanup MediaStreamFilterImpl_QueryInterface.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 5d5da39ddc1094e563e7bb81070f821cdb722cca
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=5d5da39ddc1094e563e7bb8107...

Author: Christian Costa <titan.costa(a)gmail.com>
Date:   Fri Oct 12 23:07:15 2012 +0200

amstream: Cleanup MediaStreamFilterImpl_QueryInterface.

---

 dlls/amstream/mediastreamfilter.c |   29 +++++++++++------------------
 1 files changed, 11 insertions(+), 18 deletions(-)

diff --git a/dlls/amstream/mediastreamfilter.c b/dlls/amstream/mediastreamfilter.c
index 194914e..8423cfa 100644
--- a/dlls/amstream/mediastreamfilter.c
+++ b/dlls/amstream/mediastreamfilter.c
@@ -102,29 +102,22 @@ static const BaseInputPinFuncTable input_BaseInputFuncTable = {
 
 /*** IUnknown methods ***/
 
-static HRESULT WINAPI MediaStreamFilterImpl_QueryInterface(IMediaStreamFilter *iface, REFIID riid,
-        void **ppv)
+static HRESULT WINAPI MediaStreamFilterImpl_QueryInterface(IMediaStreamFilter *iface, REFIID riid, void **ret_iface)
 {
-    IMediaStreamFilterImpl *This = impl_from_IMediaStreamFilter(iface);
-
-    TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
+    TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ret_iface);
 
-    *ppv = NULL;
+    *ret_iface = NULL;
 
-    if (IsEqualIID(riid, &IID_IUnknown))
-        *ppv = This;
-    else if (IsEqualIID(riid, &IID_IPersist))
-        *ppv = This;
-    else if (IsEqualIID(riid, &IID_IMediaFilter))
-        *ppv = This;
-    else if (IsEqualIID(riid, &IID_IBaseFilter))
-        *ppv = This;
-    else if (IsEqualIID(riid, &IID_IMediaStreamFilter))
-        *ppv = This;
+    if (IsEqualIID(riid, &IID_IUnknown) ||
+        IsEqualIID(riid, &IID_IPersist) ||
+        IsEqualIID(riid, &IID_IMediaFilter) ||
+        IsEqualIID(riid, &IID_IBaseFilter) ||
+        IsEqualIID(riid, &IID_IMediaStreamFilter))
+        *ret_iface = iface;
 
-    if (*ppv)
+    if (*ret_iface)
     {
-        IUnknown_AddRef((IUnknown *)(*ppv));
+        IMediaStreamFilter_AddRef(*ret_iface);
         return S_OK;
     }