dlls/amstream/main.c

   1 /*
   2  *     MultiMedia Streams Base Functions (AMSTREAM.DLL)
   3  *
   4  * Copyright 2004 Christian Costa
   5  *
   6  * This file contains the (internal) driver registration functions,
   7  * driver enumeration APIs and DirectDraw creation functions.
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #define COM_NO_WINDOWS_H
  25
  26 #include <stdarg.h>
  27 #include <string.h>
  28
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "winuser.h"
  32 #include "winreg.h"
  33 #include "winerror.h"
  34
  35 #include "ole2.h"
  36 #include "uuids.h"
  37
  38 #include "amstream_private.h"
  39 #include "amstream.h"
  40
  41 #include "wine/debug.h"
  42
  43 WINE_DEFAULT_DEBUG_CHANNEL(amstream);
  44
  45 static DWORD dll_ref = 0;
  46
  47 /* For the moment, do nothing here. */
  48 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpv)
  49 {
  50     switch(fdwReason) {
  51         case DLL_PROCESS_ATTACH:
  52             DisableThreadLibraryCalls(hInstDLL);
  53             break;
  54         case DLL_PROCESS_DETACH:
  55             break;
  56     }
  57     return TRUE;
  58 }
  59
  60 /******************************************************************************
  61  * Multimedia Streams ClassFactory
  62  */
  63 typedef struct {
  64     IClassFactory ITF_IClassFactory;
  65
  66     DWORD ref;
  67     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, LPVOID *ppObj);
  68 } IClassFactoryImpl;
  69
  70 struct object_creation_info
  71 {
  72     const CLSID *clsid;
  73     HRESULT (*pfnCreateInstance)(IUnknown *pUnkOuter, LPVOID *ppObj);
  74 };
  75
  76 static const struct object_creation_info object_creation[] =
  77 {
  78     { &CLSID_AMMultiMediaStream, AM_create },
  79 };
  80
  81 static HRESULT WINAPI
  82 AMCF_QueryInterface(LPCLASSFACTORY iface,REFIID riid,LPVOID *ppobj)
  83 {
  84     ICOM_THIS(IClassFactoryImpl,iface);
  85
  86     if (IsEqualGUID(riid, &IID_IUnknown)
  87         || IsEqualGUID(riid, &IID_IClassFactory))
  88     {
  89         IClassFactory_AddRef(iface);
  90         *ppobj = This;
  91         return S_OK;
  92     }
  93
  94     WARN("(%p)->(%s,%p),not found\n",This,debugstr_guid(riid),ppobj);
  95     return E_NOINTERFACE;
  96 }
  97
  98 static ULONG WINAPI AMCF_AddRef(LPCLASSFACTORY iface) {
  99     ICOM_THIS(IClassFactoryImpl,iface);
 100     return ++(This->ref);
 101 }
 102
 103 static ULONG WINAPI AMCF_Release(LPCLASSFACTORY iface) {
 104     ICOM_THIS(IClassFactoryImpl,iface);
 105
 106     ULONG ref = --This->ref;
 107
 108     if (ref == 0)
 109         HeapFree(GetProcessHeap(), 0, This);
 110
 111     return ref;
 112 }
 113
 114
 115 static HRESULT WINAPI AMCF_CreateInstance(LPCLASSFACTORY iface, LPUNKNOWN pOuter,
 116                                           REFIID riid, LPVOID *ppobj) {
 117     ICOM_THIS(IClassFactoryImpl,iface);
 118     HRESULT hres;
 119     LPUNKNOWN punk;
 120
 121     TRACE("(%p)->(%p,%s,%p)\n",This,pOuter,debugstr_guid(riid),ppobj);
 122
 123     hres = This->pfnCreateInstance(pOuter, (LPVOID *) &punk);
 124     if (FAILED(hres)) {
 125         *ppobj = NULL;
 126         return hres;
 127     }
 128     hres = IUnknown_QueryInterface(punk, riid, ppobj);
 129     if (FAILED(hres)) {
 130         *ppobj = NULL;
 131         return hres;
 132     }
 133     IUnknown_Release(punk);
 134     return hres;
 135 }
 136
 137 static HRESULT WINAPI AMCF_LockServer(LPCLASSFACTORY iface,BOOL dolock) {
 138     ICOM_THIS(IClassFactoryImpl,iface);
 139     FIXME("(%p)->(%d),stub!\n",This,dolock);
 140     return S_OK;
 141 }
 142
 143 static ICOM_VTABLE(IClassFactory) DSCF_Vtbl =
 144 {
 145     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 146     AMCF_QueryInterface,
 147     AMCF_AddRef,
 148     AMCF_Release,
 149     AMCF_CreateInstance,
 150     AMCF_LockServer
 151 };
 152
 153 /*******************************************************************************
 154  * DllGetClassObject [AMSTREAM.@]
 155  * Retrieves class object from a DLL object
 156  *
 157  * NOTES
 158  *    Docs say returns STDAPI
 159  *
 160  * PARAMS
 161  *    rclsid [I] CLSID for the class object
 162  *    riid   [I] Reference to identifier of interface for class object
 163  *    ppv    [O] Address of variable to receive interface pointer for riid
 164  *
 165  * RETURNS
 166  *    Success: S_OK
 167  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 168  *             E_UNEXPECTED
 169  */
 170 DWORD WINAPI AMSTREAM_DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 171 {
 172     int i;
 173     IClassFactoryImpl *factory;
 174
 175     TRACE("(%s,%s,%p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 176
 177     if ( !IsEqualGUID( &IID_IClassFactory, riid )
 178          && ! IsEqualGUID( &IID_IUnknown, riid) )
 179         return E_NOINTERFACE;
 180
 181     for (i=0; i < sizeof(object_creation)/sizeof(object_creation[0]); i++)
 182     {
 183         if (IsEqualGUID(object_creation[i].clsid, rclsid))
 184             break;
 185     }
 186
 187     if (i == sizeof(object_creation)/sizeof(object_creation[0]))
 188     {
 189         FIXME("%s: no class found.\n", debugstr_guid(rclsid));
 190         return CLASS_E_CLASSNOTAVAILABLE;
 191     }
 192
 193     factory = HeapAlloc(GetProcessHeap(), 0, sizeof(*factory));
 194     if (factory == NULL) return E_OUTOFMEMORY;
 195
 196     factory->ITF_IClassFactory.lpVtbl = &DSCF_Vtbl;
 197     factory->ref = 1;
 198
 199     factory->pfnCreateInstance = object_creation[i].pfnCreateInstance;
 200
 201     *ppv = &(factory->ITF_IClassFactory);
 202     return S_OK;
 203 }
 204
 205 /***********************************************************************
 206  *              DllCanUnloadNow (AMSTREAM.@)
 207  */
 208 HRESULT WINAPI AMSTREAM_DllCanUnloadNow()
 209 {
 210     return dll_ref != 0 ? S_FALSE : S_OK;
 211 }