dlls/strmbase/dispatch.c

   1 /*
   2  * Generic Implementation of IDispatch for strmbase classes
   3  *
   4  * Copyright 2012 Aric Stewart, CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define COBJMACROS
  22
  23 #include "dshow.h"
  24 #include "wine/unicode.h"
  25 #include "wine/strmbase.h"
  26 #include "uuids.h"
  27 #include "vfwmsgs.h"
  28 #include <assert.h>
  29
  30 HRESULT WINAPI BaseDispatch_Init(BaseDispatch *This, REFIID riid)
  31 {
  32     HRESULT hr = E_FAIL;
  33     ITypeLib *pTypeLib;
  34
  35     This->pTypeInfo = NULL;
  36     hr = LoadRegTypeLib(&LIBID_QuartzTypeLib, 1, 0, LOCALE_SYSTEM_DEFAULT, &pTypeLib);
  37     if (SUCCEEDED(hr))
  38     {
  39         hr = ITypeLib_GetTypeInfoOfGuid(pTypeLib, riid, &This->pTypeInfo);
  40
  41     if (pTypeLib)
  42         ITypeLib_Release(pTypeLib);
  43     }
  44     return hr;
  45 }
  46
  47 HRESULT WINAPI BaseDispatch_Destroy(BaseDispatch *This)
  48 {
  49     if (This->pTypeInfo)
  50         ITypeInfo_Release(This->pTypeInfo);
  51     return S_OK;
  52 }
  53
  54 HRESULT WINAPI BaseDispatchImpl_GetIDsOfNames(BaseDispatch *This, REFIID riid, OLECHAR **rgszNames, UINT cNames, LCID lcid, DISPID *rgdispid)
  55 {
  56     if (This->pTypeInfo)
  57         return ITypeInfo_GetIDsOfNames(This->pTypeInfo, rgszNames, cNames, rgdispid);
  58     return E_NOTIMPL;
  59 }
  60
  61 HRESULT WINAPI BaseDispatchImpl_GetTypeInfo(BaseDispatch *This, REFIID riid, UINT itinfo, LCID lcid, ITypeInfo **pptinfo)
  62 {
  63     if (This->pTypeInfo)
  64     {
  65         ITypeInfo_AddRef(This->pTypeInfo);
  66         *pptinfo = This->pTypeInfo;
  67         return S_OK;
  68     }
  69     return E_NOTIMPL;
  70 }
  71
  72 HRESULT WINAPI BaseDispatchImpl_GetTypeInfoCount(BaseDispatch *This, UINT *pctinfo)
  73 {
  74     if (This->pTypeInfo)
  75         *pctinfo = 1;
  76     else
  77         *pctinfo = 0;
  78     return S_OK;
  79 }