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     {&CLSID_WICBmpEncoder, BmpEncoder_CreateInstance},
  48     {&CLSID_WICDefaultFormatConverter, FormatConverter_CreateInstance},
  49     {0}};
  50
  51 typedef struct {
  52     const IClassFactoryVtbl *lpIClassFactoryVtbl;
  53     LONG                    ref;
  54     classinfo               *info;
  55 } ClassFactoryImpl;
  56
  57 static HRESULT WINAPI ClassFactoryImpl_QueryInterface(IClassFactory *iface,
  58     REFIID iid, void **ppv)
  59 {
  60     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
  61     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
  62
  63     if (!ppv) return E_INVALIDARG;
  64
  65     if (IsEqualIID(&IID_IUnknown, iid) || IsEqualIID(&IID_IClassFactory, iid))
  66     {
  67         *ppv = This;
  68     }
  69     else
  70     {
  71         *ppv = NULL;
  72         return E_NOINTERFACE;
  73     }
  74
  75     IUnknown_AddRef((IUnknown*)*ppv);
  76     return S_OK;
  77 }
  78
  79 static ULONG WINAPI ClassFactoryImpl_AddRef(IClassFactory *iface)
  80 {
  81     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
  82     ULONG ref = InterlockedIncrement(&This->ref);
  83
  84     TRACE("(%p) refcount=%u\n", iface, ref);
  85
  86     return ref;
  87 }
  88
  89 static ULONG WINAPI ClassFactoryImpl_Release(IClassFactory *iface)
  90 {
  91     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
  92     ULONG ref = InterlockedDecrement(&This->ref);
  93
  94     TRACE("(%p) refcount=%u\n", iface, ref);
  95
  96     if (ref == 0)
  97         HeapFree(GetProcessHeap(), 0, This);
  98
  99     return ref;
 100 }
 101
 102 static HRESULT WINAPI ClassFactoryImpl_CreateInstance(IClassFactory *iface,
 103     IUnknown *pUnkOuter, REFIID riid, void **ppv)
 104 {
 105     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
 106
 107     return This->info->constructor(pUnkOuter, riid, ppv);
 108 }
 109
 110 static HRESULT WINAPI ClassFactoryImpl_LockServer(IClassFactory *iface, BOOL lock)
 111 {
 112     TRACE("(%p, %i): stub\n", iface, lock);
 113     return E_NOTIMPL;
 114 }
 115
 116 static const IClassFactoryVtbl ClassFactoryImpl_Vtbl = {
 117     ClassFactoryImpl_QueryInterface,
 118     ClassFactoryImpl_AddRef,
 119     ClassFactoryImpl_Release,
 120     ClassFactoryImpl_CreateInstance,
 121     ClassFactoryImpl_LockServer
 122 };
 123
 124 static HRESULT ClassFactoryImpl_Constructor(classinfo *info, REFIID riid, LPVOID *ppv)
 125 {
 126     ClassFactoryImpl *This;
 127     HRESULT ret;
 128
 129     *ppv = NULL;
 130
 131     This = HeapAlloc(GetProcessHeap(), 0, sizeof(ClassFactoryImpl));
 132     if (!This) return E_OUTOFMEMORY;
 133
 134     This->lpIClassFactoryVtbl = &ClassFactoryImpl_Vtbl;
 135     This->ref = 1;
 136     This->info = info;
 137
 138     ret = IClassFactory_QueryInterface((IClassFactory*)This, riid, ppv);
 139     IClassFactory_Release((IClassFactory*)This);
 140
 141     return ret;
 142 }
 143
 144 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
 145 {
 146     HRESULT ret;
 147     classinfo *info=NULL;
 148     int i;
 149
 150     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(iid), ppv);
 151
 152     if (!rclsid || !iid || !ppv)
 153         return E_INVALIDARG;
 154
 155     *ppv = NULL;
 156
 157     for (i=0; wic_classes[i].classid; i++)
 158     {
 159         if (IsEqualCLSID(wic_classes[i].classid, rclsid))
 160         {
 161             info = &wic_classes[i];
 162             break;
 163         }
 164     }
 165
 166     if (info)
 167         ret = ClassFactoryImpl_Constructor(info, iid, ppv);
 168     else
 169         ret = CLASS_E_CLASSNOTAVAILABLE;
 170
 171     TRACE("<-- %08X\n", ret);
 172     return ret;
 173 }