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_WICTiffDecoder, TiffDecoder_CreateInstance},
  54     {&CLSID_WICDefaultFormatConverter, FormatConverter_CreateInstance},
  55     {0}};
  56
  57 typedef struct {
  58     const IClassFactoryVtbl *lpIClassFactoryVtbl;
  59     LONG                    ref;
  60     classinfo               *info;
  61 } ClassFactoryImpl;
  62
  63 static HRESULT WINAPI ClassFactoryImpl_QueryInterface(IClassFactory *iface,
  64     REFIID iid, void **ppv)
  65 {
  66     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
  67     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
  68
  69     if (!ppv) return E_INVALIDARG;
  70
  71     if (IsEqualIID(&IID_IUnknown, iid) || IsEqualIID(&IID_IClassFactory, iid))
  72     {
  73         *ppv = This;
  74     }
  75     else
  76     {
  77         *ppv = NULL;
  78         return E_NOINTERFACE;
  79     }
  80
  81     IUnknown_AddRef((IUnknown*)*ppv);
  82     return S_OK;
  83 }
  84
  85 static ULONG WINAPI ClassFactoryImpl_AddRef(IClassFactory *iface)
  86 {
  87     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
  88     ULONG ref = InterlockedIncrement(&This->ref);
  89
  90     TRACE("(%p) refcount=%u\n", iface, ref);
  91
  92     return ref;
  93 }
  94
  95 static ULONG WINAPI ClassFactoryImpl_Release(IClassFactory *iface)
  96 {
  97     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
  98     ULONG ref = InterlockedDecrement(&This->ref);
  99
 100     TRACE("(%p) refcount=%u\n", iface, ref);
 101
 102     if (ref == 0)
 103         HeapFree(GetProcessHeap(), 0, This);
 104
 105     return ref;
 106 }
 107
 108 static HRESULT WINAPI ClassFactoryImpl_CreateInstance(IClassFactory *iface,
 109     IUnknown *pUnkOuter, REFIID riid, void **ppv)
 110 {
 111     ClassFactoryImpl *This = (ClassFactoryImpl*)iface;
 112
 113     return This->info->constructor(pUnkOuter, riid, ppv);
 114 }
 115
 116 static HRESULT WINAPI ClassFactoryImpl_LockServer(IClassFactory *iface, BOOL lock)
 117 {
 118     TRACE("(%p, %i): stub\n", iface, lock);
 119     return E_NOTIMPL;
 120 }
 121
 122 static const IClassFactoryVtbl ClassFactoryImpl_Vtbl = {
 123     ClassFactoryImpl_QueryInterface,
 124     ClassFactoryImpl_AddRef,
 125     ClassFactoryImpl_Release,
 126     ClassFactoryImpl_CreateInstance,
 127     ClassFactoryImpl_LockServer
 128 };
 129
 130 static HRESULT ClassFactoryImpl_Constructor(classinfo *info, REFIID riid, LPVOID *ppv)
 131 {
 132     ClassFactoryImpl *This;
 133     HRESULT ret;
 134
 135     *ppv = NULL;
 136
 137     This = HeapAlloc(GetProcessHeap(), 0, sizeof(ClassFactoryImpl));
 138     if (!This) return E_OUTOFMEMORY;
 139
 140     This->lpIClassFactoryVtbl = &ClassFactoryImpl_Vtbl;
 141     This->ref = 1;
 142     This->info = info;
 143
 144     ret = IClassFactory_QueryInterface((IClassFactory*)This, riid, ppv);
 145     IClassFactory_Release((IClassFactory*)This);
 146
 147     return ret;
 148 }
 149
 150 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
 151 {
 152     HRESULT ret;
 153     classinfo *info=NULL;
 154     int i;
 155
 156     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(iid), ppv);
 157
 158     if (!rclsid || !iid || !ppv)
 159         return E_INVALIDARG;
 160
 161     *ppv = NULL;
 162
 163     for (i=0; wic_classes[i].classid; i++)
 164     {
 165         if (IsEqualCLSID(wic_classes[i].classid, rclsid))
 166         {
 167             info = &wic_classes[i];
 168             break;
 169         }
 170     }
 171
 172     if (info)
 173         ret = ClassFactoryImpl_Constructor(info, iid, ppv);
 174     else
 175         ret = CLASS_E_CLASSNOTAVAILABLE;
 176
 177     TRACE("<-- %08X\n", ret);
 178     return ret;
 179 }