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_WICPngDecoder, PngDecoder_CreateInstance},
  48     {&CLSID_WICPngEncoder, PngEncoder_CreateInstance},
  49     {&CLSID_WICBmpEncoder, BmpEncoder_CreateInstance},
  50     {&CLSID_WICGifDecoder, GifDecoder_CreateInstance},
  51     {&CLSID_WICIcoDecoder, IcoDecoder_CreateInstance},
  52     {&CLSID_WICJpegDecoder, JpegDecoder_CreateInstance},
  53     {&CLSID_WICDefaultFormatConverter, FormatConverter_CreateInstance},
  54     {0}};
  55
  56 typedef struct {
  57     const IClassFactoryVtbl *lpIClassFactoryVtbl;
  58     LONG                    ref;
  59     classinfo               *info;
  60 } ClassFactoryImpl;
  61
  62 static HRESULT WINAPI ClassFactoryImpl_QueryInterface(IClassFactory *iface,
  63     REFIID iid, void **ppv)
  64 {
  65     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
  66     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
  67
  68     if (!ppv) return E_INVALIDARG;
  69
  70     if (IsEqualIID(&IID_IUnknown, iid) || IsEqualIID(&IID_IClassFactory, iid))
  71     {
  72         *ppv = This;
  73     }
  74     else
  75     {
  76         *ppv = NULL;
  77         return E_NOINTERFACE;
  78     }
  79
  80     IUnknown_AddRef((IUnknown*)*ppv);
  81     return S_OK;
  82 }
  83
  84 static ULONG WINAPI ClassFactoryImpl_AddRef(IClassFactory *iface)
  85 {
  86     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
  87     ULONG ref = InterlockedIncrement(&This->ref);
  88
  89     TRACE("(%p) refcount=%u\n", iface, ref);
  90
  91     return ref;
  92 }
  93
  94 static ULONG WINAPI ClassFactoryImpl_Release(IClassFactory *iface)
  95 {
  96     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
  97     ULONG ref = InterlockedDecrement(&This->ref);
  98
  99     TRACE("(%p) refcount=%u\n", iface, ref);
 100
 101     if (ref == 0)
 102         HeapFree(GetProcessHeap(), 0, This);
 103
 104     return ref;
 105 }
 106
 107 static HRESULT WINAPI ClassFactoryImpl_CreateInstance(IClassFactory *iface,
 108     IUnknown *pUnkOuter, REFIID riid, void **ppv)
 109 {
 110     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
 111
 112     return This->info->constructor(pUnkOuter, riid, ppv);
 113 }
 114
 115 static HRESULT WINAPI ClassFactoryImpl_LockServer(IClassFactory *iface, BOOL lock)
 116 {
 117     TRACE("(%p, %i): stub\n", iface, lock);
 118     return E_NOTIMPL;
 119 }
 120
 121 static const IClassFactoryVtbl ClassFactoryImpl_Vtbl = {
 122     ClassFactoryImpl_QueryInterface,
 123     ClassFactoryImpl_AddRef,
 124     ClassFactoryImpl_Release,
 125     ClassFactoryImpl_CreateInstance,
 126     ClassFactoryImpl_LockServer
 127 };
 128
 129 static HRESULT ClassFactoryImpl_Constructor(classinfo *info, REFIID riid, LPVOID *ppv)
 130 {
 131     ClassFactoryImpl *This;
 132     HRESULT ret;
 133
 134     *ppv = NULL;
 135
 136     This = HeapAlloc(GetProcessHeap(), 0, sizeof(ClassFactoryImpl));
 137     if (!This) return E_OUTOFMEMORY;
 138
 139     This->lpIClassFactoryVtbl = &ClassFactoryImpl_Vtbl;
 140     This->ref = 1;
 141     This->info = info;
 142
 143     ret = IClassFactory_QueryInterface((IClassFactory*)This, riid, ppv);
 144     IClassFactory_Release((IClassFactory*)This);
 145
 146     return ret;
 147 }
 148
 149 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
 150 {
 151     HRESULT ret;
 152     classinfo *info=NULL;
 153     int i;
 154
 155     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(iid), ppv);
 156
 157     if (!rclsid || !iid || !ppv)
 158         return E_INVALIDARG;
 159
 160     *ppv = NULL;
 161
 162     for (i=0; wic_classes[i].classid; i++)
 163     {
 164         if (IsEqualCLSID(wic_classes[i].classid, rclsid))
 165         {
 166             info = &wic_classes[i];
 167             break;
 168         }
 169     }
 170
 171     if (info)
 172         ret = ClassFactoryImpl_Constructor(info, iid, ppv);
 173     else
 174         ret = CLASS_E_CLASSNOTAVAILABLE;
 175
 176     TRACE("<-- %08X\n", ret);
 177     return ret;
 178 }