2 * Implementation of IEnumPins Interface
4 * Copyright 2003 Robert Shearman
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32 #include "qcap_main.h"
34 #include "wine/debug.h"
36 WINE_DEFAULT_DEBUG_CHANNEL(qcap);
38 typedef struct IEnumPinsImpl
40 const IEnumPinsVtbl * lpVtbl;
42 ENUMPINDETAILS enumPinDetails;
46 static const struct IEnumPinsVtbl IEnumPinsImpl_Vtbl;
48 HRESULT IEnumPinsImpl_Construct(const ENUMPINDETAILS * pDetails, IEnumPins ** ppEnum)
50 IEnumPinsImpl * pEnumPins = CoTaskMemAlloc(sizeof(IEnumPinsImpl));
56 pEnumPins->lpVtbl = &IEnumPinsImpl_Vtbl;
57 pEnumPins->refCount = 1;
58 pEnumPins->uIndex = 0;
59 CopyMemory(&pEnumPins->enumPinDetails, pDetails, sizeof(ENUMPINDETAILS));
60 *ppEnum = (IEnumPins *)(&pEnumPins->lpVtbl);
65 static HRESULT WINAPI IEnumPinsImpl_QueryInterface(IEnumPins * iface, REFIID riid, LPVOID * ppv)
67 TRACE("(%s, %p)\n", debugstr_guid(riid), ppv);
71 if (IsEqualIID(riid, &IID_IUnknown))
73 else if (IsEqualIID(riid, &IID_IEnumPins))
78 IUnknown_AddRef((IUnknown *)(*ppv));
82 FIXME("No interface for %s!\n", debugstr_guid(riid));
87 static ULONG WINAPI IEnumPinsImpl_AddRef(IEnumPins * iface)
89 IEnumPinsImpl *This = (IEnumPinsImpl *)iface;
90 ULONG refCount = InterlockedIncrement(&This->refCount);
97 static ULONG WINAPI IEnumPinsImpl_Release(IEnumPins * iface)
99 IEnumPinsImpl *This = (IEnumPinsImpl *)iface;
100 ULONG refCount = InterlockedDecrement(&This->refCount);
107 ObjectRefCount(FALSE);
112 static HRESULT WINAPI IEnumPinsImpl_Next(IEnumPins * iface, ULONG cPins, IPin ** ppPins, ULONG * pcFetched)
115 IEnumPinsImpl *This = (IEnumPinsImpl *)iface;
117 cFetched = min(This->enumPinDetails.cPins, This->uIndex + cPins) - This->uIndex;
119 TRACE("(%lu, %p, %p)\n", cPins, ppPins, pcFetched);
124 for (i = 0; i < cFetched; i++) {
125 IPin_AddRef(This->enumPinDetails.ppPins[This->uIndex + i]);
126 ppPins[i] = This->enumPinDetails.ppPins[This->uIndex + i];
130 if ((cPins != 1) || pcFetched)
131 *pcFetched = cFetched;
133 This->uIndex += cFetched;
135 if (cFetched != cPins)
140 static HRESULT WINAPI IEnumPinsImpl_Skip(IEnumPins * iface, ULONG cPins)
142 IEnumPinsImpl *This = (IEnumPinsImpl *)iface;
144 TRACE("(%lu)\n", cPins);
146 if (This->uIndex + cPins < This->enumPinDetails.cPins)
148 This->uIndex += cPins;
154 static HRESULT WINAPI IEnumPinsImpl_Reset(IEnumPins * iface)
156 IEnumPinsImpl *This = (IEnumPinsImpl *)iface;
158 TRACE("IEnumPinsImpl::Reset()\n");
164 static HRESULT WINAPI IEnumPinsImpl_Clone(IEnumPins * iface, IEnumPins ** ppEnum)
167 IEnumPinsImpl *This = (IEnumPinsImpl *)iface;
169 TRACE("(%p)\n", ppEnum);
171 hr = IEnumPinsImpl_Construct(&This->enumPinDetails, ppEnum);
174 return IEnumPins_Skip(*ppEnum, This->uIndex);
177 static const IEnumPinsVtbl IEnumPinsImpl_Vtbl =
179 IEnumPinsImpl_QueryInterface,
180 IEnumPinsImpl_AddRef,
181 IEnumPinsImpl_Release,