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187 lines
4.5 KiB
C
187 lines
4.5 KiB
C
/*
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* Implementation of IEnumPins Interface
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*
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* Copyright 2003 Robert Shearman
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#define COBJMACROS
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#include "windef.h"
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#include "winbase.h"
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#include "wtypes.h"
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#include "wingdi.h"
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#include "winuser.h"
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#include "dshow.h"
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#include "qcap_main.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(qcap);
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typedef struct IEnumPinsImpl
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{
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const IEnumPinsVtbl * lpVtbl;
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LONG refCount;
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ENUMPINDETAILS enumPinDetails;
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ULONG uIndex;
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} IEnumPinsImpl;
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static const struct IEnumPinsVtbl IEnumPinsImpl_Vtbl;
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HRESULT IEnumPinsImpl_Construct(const ENUMPINDETAILS * pDetails, IEnumPins ** ppEnum)
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{
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IEnumPinsImpl * pEnumPins = CoTaskMemAlloc(sizeof(IEnumPinsImpl));
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if (!pEnumPins)
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{
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*ppEnum = NULL;
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return E_OUTOFMEMORY;
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}
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pEnumPins->lpVtbl = &IEnumPinsImpl_Vtbl;
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pEnumPins->refCount = 1;
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pEnumPins->uIndex = 0;
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CopyMemory(&pEnumPins->enumPinDetails, pDetails, sizeof(ENUMPINDETAILS));
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*ppEnum = (IEnumPins *)(&pEnumPins->lpVtbl);
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ObjectRefCount(TRUE);
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return S_OK;
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}
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static HRESULT WINAPI IEnumPinsImpl_QueryInterface(IEnumPins * iface, REFIID riid, LPVOID * ppv)
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{
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TRACE("(%s, %p)\n", debugstr_guid(riid), ppv);
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*ppv = NULL;
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if (IsEqualIID(riid, &IID_IUnknown))
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*ppv = (LPVOID)iface;
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else if (IsEqualIID(riid, &IID_IEnumPins))
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*ppv = (LPVOID)iface;
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if (*ppv)
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{
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IUnknown_AddRef((IUnknown *)(*ppv));
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return S_OK;
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}
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FIXME("No interface for %s!\n", debugstr_guid(riid));
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return E_NOINTERFACE;
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}
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static ULONG WINAPI IEnumPinsImpl_AddRef(IEnumPins * iface)
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{
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IEnumPinsImpl *This = (IEnumPinsImpl *)iface;
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ULONG refCount = InterlockedIncrement(&This->refCount);
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TRACE("()\n");
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return refCount;
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}
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static ULONG WINAPI IEnumPinsImpl_Release(IEnumPins * iface)
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{
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IEnumPinsImpl *This = (IEnumPinsImpl *)iface;
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ULONG refCount = InterlockedDecrement(&This->refCount);
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TRACE("()\n");
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if (!refCount)
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{
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CoTaskMemFree(This);
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ObjectRefCount(FALSE);
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}
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return refCount;
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}
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static HRESULT WINAPI IEnumPinsImpl_Next(IEnumPins * iface, ULONG cPins, IPin ** ppPins, ULONG * pcFetched)
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{
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ULONG cFetched;
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IEnumPinsImpl *This = (IEnumPinsImpl *)iface;
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cFetched = min(This->enumPinDetails.cPins, This->uIndex + cPins) - This->uIndex;
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TRACE("(%u, %p, %p)\n", cPins, ppPins, pcFetched);
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if (cFetched > 0)
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{
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ULONG i;
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for (i = 0; i < cFetched; i++) {
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IPin_AddRef(This->enumPinDetails.ppPins[This->uIndex + i]);
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ppPins[i] = This->enumPinDetails.ppPins[This->uIndex + i];
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}
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}
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if ((cPins != 1) || pcFetched)
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*pcFetched = cFetched;
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This->uIndex += cFetched;
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if (cFetched != cPins)
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return S_FALSE;
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return S_OK;
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}
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static HRESULT WINAPI IEnumPinsImpl_Skip(IEnumPins * iface, ULONG cPins)
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{
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IEnumPinsImpl *This = (IEnumPinsImpl *)iface;
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TRACE("(%u)\n", cPins);
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if (This->uIndex + cPins < This->enumPinDetails.cPins)
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{
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This->uIndex += cPins;
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return S_OK;
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}
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return S_FALSE;
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}
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static HRESULT WINAPI IEnumPinsImpl_Reset(IEnumPins * iface)
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{
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IEnumPinsImpl *This = (IEnumPinsImpl *)iface;
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TRACE("IEnumPinsImpl::Reset()\n");
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This->uIndex = 0;
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return S_OK;
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}
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static HRESULT WINAPI IEnumPinsImpl_Clone(IEnumPins * iface, IEnumPins ** ppEnum)
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{
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HRESULT hr;
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IEnumPinsImpl *This = (IEnumPinsImpl *)iface;
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TRACE("(%p)\n", ppEnum);
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hr = IEnumPinsImpl_Construct(&This->enumPinDetails, ppEnum);
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if (FAILED(hr))
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return hr;
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return IEnumPins_Skip(*ppEnum, This->uIndex);
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}
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static const IEnumPinsVtbl IEnumPinsImpl_Vtbl =
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{
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IEnumPinsImpl_QueryInterface,
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IEnumPinsImpl_AddRef,
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IEnumPinsImpl_Release,
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IEnumPinsImpl_Next,
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IEnumPinsImpl_Skip,
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IEnumPinsImpl_Reset,
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IEnumPinsImpl_Clone
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};
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