dll/win32/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 "wincodecs_private.h"
  20
  21 extern HRESULT WINAPI WIC_DllGetClassObject(REFCLSID, REFIID, LPVOID *) DECLSPEC_HIDDEN;
  22
  23 typedef struct {
  24     REFCLSID classid;
  25     HRESULT (*constructor)(IUnknown*,REFIID,void**);
  26 } classinfo;
  27
  28 static const classinfo wic_classes[] = {
  29     {&CLSID_WICImagingFactory, ComponentFactory_CreateInstance},
  30     {&CLSID_WICBmpDecoder, BmpDecoder_CreateInstance},
  31     {&CLSID_WICPngDecoder, PngDecoder_CreateInstance},
  32     {&CLSID_WICPngEncoder, PngEncoder_CreateInstance},
  33     {&CLSID_WICBmpEncoder, BmpEncoder_CreateInstance},
  34     {&CLSID_WICGifDecoder, GifDecoder_CreateInstance},
  35     {&CLSID_WICIcoDecoder, IcoDecoder_CreateInstance},
  36     {&CLSID_WICJpegDecoder, JpegDecoder_CreateInstance},
  37     {&CLSID_WICJpegEncoder, JpegEncoder_CreateInstance},
  38     {&CLSID_WICTiffDecoder, TiffDecoder_CreateInstance},
  39     {&CLSID_WICTiffEncoder, TiffEncoder_CreateInstance},
  40     {&CLSID_WICIcnsEncoder, IcnsEncoder_CreateInstance},
  41     {&CLSID_WICDefaultFormatConverter, FormatConverter_CreateInstance},
  42     {&CLSID_WineTgaDecoder, TgaDecoder_CreateInstance},
  43     {&CLSID_WICUnknownMetadataReader, UnknownMetadataReader_CreateInstance},
  44     {&CLSID_WICIfdMetadataReader, IfdMetadataReader_CreateInstance},
  45     {&CLSID_WICPngTextMetadataReader, PngTextReader_CreateInstance},
  46     {&CLSID_WICLSDMetadataReader, LSDReader_CreateInstance},
  47     {&CLSID_WICIMDMetadataReader, IMDReader_CreateInstance},
  48     {&CLSID_WICGCEMetadataReader, GCEReader_CreateInstance},
  49     {&CLSID_WICAPEMetadataReader, APEReader_CreateInstance},
  50     {&CLSID_WICGifCommentMetadataReader, GifCommentReader_CreateInstance},
  51     {0}};
  52
  53 typedef struct {
  54     IClassFactory           IClassFactory_iface;
  55     LONG                    ref;
  56     const classinfo         *info;
  57 } ClassFactoryImpl;
  58
  59 static inline ClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
  60 {
  61     return CONTAINING_RECORD(iface, ClassFactoryImpl, IClassFactory_iface);
  62 }
  63
  64 static HRESULT WINAPI ClassFactoryImpl_QueryInterface(IClassFactory *iface,
  65     REFIID iid, void **ppv)
  66 {
  67     ClassFactoryImpl *This = impl_from_IClassFactory(iface);
  68     TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
  69
  70     if (!ppv) return E_INVALIDARG;
  71
  72     if (IsEqualIID(&IID_IUnknown, iid) ||
  73         IsEqualIID(&IID_IClassFactory, iid))
  74     {
  75         *ppv = &This->IClassFactory_iface;
  76     }
  77     else
  78     {
  79         *ppv = NULL;
  80         return E_NOINTERFACE;
  81     }
  82
  83     IUnknown_AddRef((IUnknown*)*ppv);
  84     return S_OK;
  85 }
  86
  87 static ULONG WINAPI ClassFactoryImpl_AddRef(IClassFactory *iface)
  88 {
  89     ClassFactoryImpl *This = impl_from_IClassFactory(iface);
  90     ULONG ref = InterlockedIncrement(&This->ref);
  91
  92     TRACE("(%p) refcount=%u\n", iface, ref);
  93
  94     return ref;
  95 }
  96
  97 static ULONG WINAPI ClassFactoryImpl_Release(IClassFactory *iface)
  98 {
  99     ClassFactoryImpl *This = impl_from_IClassFactory(iface);
 100     ULONG ref = InterlockedDecrement(&This->ref);
 101
 102     TRACE("(%p) refcount=%u\n", iface, ref);
 103
 104     if (ref == 0)
 105         HeapFree(GetProcessHeap(), 0, This);
 106
 107     return ref;
 108 }
 109
 110 static HRESULT WINAPI ClassFactoryImpl_CreateInstance(IClassFactory *iface,
 111     IUnknown *pUnkOuter, REFIID riid, void **ppv)
 112 {
 113     ClassFactoryImpl *This = impl_from_IClassFactory(iface);
 114
 115     return This->info->constructor(pUnkOuter, riid, ppv);
 116 }
 117
 118 static HRESULT WINAPI ClassFactoryImpl_LockServer(IClassFactory *iface, BOOL lock)
 119 {
 120     TRACE("(%p, %i): stub\n", iface, lock);
 121     return E_NOTIMPL;
 122 }
 123
 124 static const IClassFactoryVtbl ClassFactoryImpl_Vtbl = {
 125     ClassFactoryImpl_QueryInterface,
 126     ClassFactoryImpl_AddRef,
 127     ClassFactoryImpl_Release,
 128     ClassFactoryImpl_CreateInstance,
 129     ClassFactoryImpl_LockServer
 130 };
 131
 132 static HRESULT ClassFactoryImpl_Constructor(const classinfo *info, REFIID riid, LPVOID *ppv)
 133 {
 134     ClassFactoryImpl *This;
 135     HRESULT ret;
 136
 137     *ppv = NULL;
 138
 139     This = HeapAlloc(GetProcessHeap(), 0, sizeof(ClassFactoryImpl));
 140     if (!This) return E_OUTOFMEMORY;
 141
 142     This->IClassFactory_iface.lpVtbl = &ClassFactoryImpl_Vtbl;
 143     This->ref = 1;
 144     This->info = info;
 145
 146     ret = IClassFactory_QueryInterface(&This->IClassFactory_iface, riid, ppv);
 147     IClassFactory_Release(&This->IClassFactory_iface);
 148
 149     return ret;
 150 }
 151
 152 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID iid, LPVOID *ppv)
 153 {
 154     HRESULT ret;
 155     const classinfo *info=NULL;
 156     int i;
 157
 158     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(iid), ppv);
 159
 160     if (!rclsid || !iid || !ppv)
 161         return E_INVALIDARG;
 162
 163     *ppv = NULL;
 164
 165     for (i=0; wic_classes[i].classid; i++)
 166     {
 167         if (IsEqualCLSID(wic_classes[i].classid, rclsid))
 168         {
 169             info = &wic_classes[i];
 170             break;
 171         }
 172     }
 173
 174     if (info)
 175         ret = ClassFactoryImpl_Constructor(info, iid, ppv);
 176     else
 177         ret = WIC_DllGetClassObject(rclsid, iid, ppv);
 178
 179     TRACE("<-- %08X\n", ret);
 180     return ret;
 181 }