dlls/windowscodecs/clsfactory.c

   1 /*
   2  * Copyright 2009 Vincent Povirk for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20
  21 #include <stdarg.h>
  22
  23 #define COBJMACROS
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "winreg.h"
  28 #include "objbase.h"
  29 #include "ocidl.h"
  30 #include "initguid.h"
  31 #include "wincodec.h"
  32
  33 #include "wincodecs_private.h"
  34
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
  38
  39 typedef struct {
  40     REFCLSID classid;
  41     HRESULT (*constructor)(IUnknown*,REFIID,void**);
  42 } classinfo;
  43
  44 static classinfo wic_classes[] = {
  45     {&CLSID_WICImagingFactory, ImagingFactory_CreateInstance},
  46     {&CLSID_WICBmpDecoder, BmpDecoder_CreateInstance},
  47     {0}};
  48
  49 typedef struct {
  50     const IClassFactoryVtbl *lpIClassFactoryVtbl;
  51     LONG                    ref;
  52     classinfo               *info;
  53 } ClassFactoryImpl;
  54
  55 static HRESULT WINAPI ClassFactoryImpl_QueryInterface(IClassFactory *iface,
  56     REFIID iid, void **ppv)
  57 {
  58     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
  59     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
  60
  61     if (!ppv) return E_INVALIDARG;
  62
  63     if (IsEqualIID(&IID_IUnknown, iid) || IsEqualIID(&IID_IClassFactory, iid))
  64     {
  65         *ppv = This;
  66     }
  67     else
  68     {
  69         *ppv = NULL;
  70         return E_NOINTERFACE;
  71     }
  72
  73     IUnknown_AddRef((IUnknown*)*ppv);
  74     return S_OK;
  75 }
  76
  77 static ULONG WINAPI ClassFactoryImpl_AddRef(IClassFactory *iface)
  78 {
  79     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
  80     ULONG ref = InterlockedIncrement(&This->ref);
  81
  82     TRACE("(%p) refcount=%u\n", iface, ref);
  83
  84     return ref;
  85 }
  86
  87 static ULONG WINAPI ClassFactoryImpl_Release(IClassFactory *iface)
  88 {
  89     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
  90     ULONG ref = InterlockedDecrement(&This->ref);
  91
  92     TRACE("(%p) refcount=%u\n", iface, ref);
  93
  94     if (ref == 0)
  95         HeapFree(GetProcessHeap(), 0, This);
  96
  97     return ref;
  98 }
  99
 100 static HRESULT WINAPI ClassFactoryImpl_CreateInstance(IClassFactory *iface,
 101     IUnknown *pUnkOuter, REFIID riid, void **ppv)
 102 {
 103     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
 104
 105     return This->info->constructor(pUnkOuter, riid, ppv);
 106 }
 107
 108 static HRESULT WINAPI ClassFactoryImpl_LockServer(IClassFactory *iface, BOOL lock)
 109 {
 110     TRACE("(%p, %i): stub\n", iface, lock);
 111     return E_NOTIMPL;
 112 }
 113
 114 static const IClassFactoryVtbl ClassFactoryImpl_Vtbl = {
 115     ClassFactoryImpl_QueryInterface,
 116     ClassFactoryImpl_AddRef,
 117     ClassFactoryImpl_Release,
 118     ClassFactoryImpl_CreateInstance,
 119     ClassFactoryImpl_LockServer
 120 };
 121
 122 static HRESULT ClassFactoryImpl_Constructor(classinfo *info, REFIID riid, LPVOID *ppv)
 123 {
 124     ClassFactoryImpl *This;
 125     HRESULT ret;
 126
 127     *ppv = NULL;
 128
 129     This = HeapAlloc(GetProcessHeap(), 0, sizeof(ClassFactoryImpl));
 130     if (!This) return E_OUTOFMEMORY;
 131
 132     This->lpIClassFactoryVtbl = &ClassFactoryImpl_Vtbl;
 133     This->ref = 1;
 134     This->info = info;
 135
 136     ret = IClassFactory_QueryInterface((IClassFactory*)This, riid, ppv);
 137     IClassFactory_Release((IClassFactory*)This);
 138
 139     return ret;
 140 }
 141
 142 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
 143 {
 144     HRESULT ret;
 145     classinfo *info=NULL;
 146     int i;
 147
 148     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(iid), ppv);
 149
 150     if (!rclsid || !iid || !ppv)
 151         return E_INVALIDARG;
 152
 153     *ppv = NULL;
 154
 155     for (i=0; wic_classes[i].classid; i++)
 156     {
 157         if (IsEqualCLSID(wic_classes[i].classid, rclsid))
 158         {
 159             info = &wic_classes[i];
 160             break;
 161         }
 162     }
 163
 164     if (info)
 165         ret = ClassFactoryImpl_Constructor(info, iid, ppv);
 166     else
 167         ret = CLASS_E_CLASSNOTAVAILABLE;
 168
 169     TRACE("<-- %08X\n", ret);
 170     return ret;
 171 }