dlls/sapi/dispatch.c

   1 /*
   2  * ITypeInfo cache for IDispatch
   3  *
   4  * Copyright 2019 Zebediah Figura
   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 #include "wine/debug.h"
  22
  23 #define COBJMACROS
  24
  25 #include "objbase.h"
  26 #include "sapiddk.h"
  27
  28 #include "sapi_private.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(sapi);
  31
  32 static ITypeLib *typelib;
  33 static ITypeInfo *typeinfos[last_tid];
  34
  35 static REFIID tid_id[] =
  36 {
  37     &IID_ISpeechObjectToken,
  38     &IID_ISpeechObjectTokens,
  39     &IID_ISpeechVoice,
  40 };
  41
  42 HRESULT get_typeinfo(enum type_id tid, ITypeInfo **ret)
  43 {
  44     HRESULT hr;
  45
  46     if (!typelib)
  47     {
  48         ITypeLib *tl;
  49
  50         hr = LoadRegTypeLib(&LIBID_SpeechLib, 5, 4, LOCALE_SYSTEM_DEFAULT, &tl);
  51         if (FAILED(hr))
  52         {
  53             ERR("Failed to load typelib, hr %#lx.\n", hr);
  54             return hr;
  55         }
  56         if (InterlockedCompareExchangePointer((void **)&typelib, tl, NULL))
  57             ITypeLib_Release(tl);
  58     }
  59     if (!typeinfos[tid])
  60     {
  61         ITypeInfo *typeinfo;
  62
  63         hr = ITypeLib_GetTypeInfoOfGuid(typelib, tid_id[tid], &typeinfo);
  64         if (FAILED(hr))
  65         {
  66             ERR("Failed to get type info for %s, hr %#lx.\n", debugstr_guid(tid_id[tid]), hr);
  67             return hr;
  68         }
  69         if (InterlockedCompareExchangePointer((void **)(typeinfos + tid), typeinfo, NULL))
  70             ITypeInfo_Release(typeinfo);
  71     }
  72     ITypeInfo_AddRef(*ret = typeinfos[tid]);
  73     return S_OK;
  74 }
  75
  76 void release_typelib(void)
  77 {
  78     unsigned int i;
  79
  80     for (i = 0; i < ARRAY_SIZE(typeinfos); ++i)
  81     {
  82         if (typeinfos[i])
  83             ITypeInfo_Release(typeinfos[i]);
  84     }
  85     if (typelib)
  86         ITypeLib_Release(typelib);
  87 }