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