208 lines
5.1 KiB
C
208 lines
5.1 KiB
C
/*
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* Generic Implementation of IPin Interface
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*
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* Copyright 2003 Robert Shearman
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* Copyright 2010 Aric Stewart, CodeWeavers
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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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#define COBJMACROS
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#include "dshow.h"
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#include "wine/debug.h"
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#include "wine/unicode.h"
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#include "wine/strmbase.h"
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#include "uuids.h"
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#include "vfwmsgs.h"
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#include <assert.h>
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WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
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static void Copy_PinInfo(PIN_INFO * pDest, const PIN_INFO * pSrc)
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{
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/* Tempting to just do a memcpy, but the name field is
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128 characters long! We will probably never exceed 10
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most of the time, so we are better off copying
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each field manually */
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strcpyW(pDest->achName, pSrc->achName);
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pDest->dir = pSrc->dir;
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pDest->pFilter = pSrc->pFilter;
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}
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/*** Common Base Pin function */
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HRESULT WINAPI BasePinImpl_GetMediaType(IPin *iface, int iPosition, AM_MEDIA_TYPE *pmt)
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{
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if (iPosition < 0)
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return E_INVALIDARG;
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return VFW_S_NO_MORE_ITEMS;
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}
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LONG WINAPI BasePinImpl_GetMediaTypeVersion(IPin *iface)
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{
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return 1;
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}
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ULONG WINAPI BasePinImpl_AddRef(IPin * iface)
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{
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BasePin *This = (BasePin *)iface;
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ULONG refCount = InterlockedIncrement(&This->refCount);
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TRACE("(%p)->() AddRef from %d\n", iface, refCount - 1);
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return refCount;
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}
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HRESULT WINAPI BasePinImpl_Disconnect(IPin * iface)
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{
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HRESULT hr;
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BasePin *This = (BasePin *)iface;
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TRACE("()\n");
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EnterCriticalSection(This->pCritSec);
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{
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if (This->pConnectedTo)
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{
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IPin_Release(This->pConnectedTo);
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This->pConnectedTo = NULL;
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FreeMediaType(&This->mtCurrent);
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ZeroMemory(&This->mtCurrent, sizeof(This->mtCurrent));
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hr = S_OK;
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}
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else
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hr = S_FALSE;
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}
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LeaveCriticalSection(This->pCritSec);
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return hr;
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}
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HRESULT WINAPI BasePinImpl_ConnectedTo(IPin * iface, IPin ** ppPin)
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{
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HRESULT hr;
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BasePin *This = (BasePin *)iface;
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TRACE("(%p)\n", ppPin);
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EnterCriticalSection(This->pCritSec);
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{
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if (This->pConnectedTo)
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{
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*ppPin = This->pConnectedTo;
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IPin_AddRef(*ppPin);
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hr = S_OK;
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}
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else
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{
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hr = VFW_E_NOT_CONNECTED;
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*ppPin = NULL;
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}
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}
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LeaveCriticalSection(This->pCritSec);
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return hr;
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}
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HRESULT WINAPI BasePinImpl_ConnectionMediaType(IPin * iface, AM_MEDIA_TYPE * pmt)
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{
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HRESULT hr;
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BasePin *This = (BasePin *)iface;
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TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
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EnterCriticalSection(This->pCritSec);
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{
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if (This->pConnectedTo)
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{
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CopyMediaType(pmt, &This->mtCurrent);
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hr = S_OK;
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}
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else
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{
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ZeroMemory(pmt, sizeof(*pmt));
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hr = VFW_E_NOT_CONNECTED;
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}
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}
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LeaveCriticalSection(This->pCritSec);
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return hr;
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}
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HRESULT WINAPI BasePinImpl_QueryPinInfo(IPin * iface, PIN_INFO * pInfo)
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{
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BasePin *This = (BasePin *)iface;
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TRACE("(%p/%p)->(%p)\n", This, iface, pInfo);
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Copy_PinInfo(pInfo, &This->pinInfo);
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IBaseFilter_AddRef(pInfo->pFilter);
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return S_OK;
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}
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HRESULT WINAPI BasePinImpl_QueryDirection(IPin * iface, PIN_DIRECTION * pPinDir)
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{
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BasePin *This = (BasePin *)iface;
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TRACE("(%p/%p)->(%p)\n", This, iface, pPinDir);
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*pPinDir = This->pinInfo.dir;
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return S_OK;
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}
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HRESULT WINAPI BasePinImpl_QueryId(IPin * iface, LPWSTR * Id)
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{
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BasePin *This = (BasePin *)iface;
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TRACE("(%p/%p)->(%p)\n", This, iface, Id);
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*Id = CoTaskMemAlloc((strlenW(This->pinInfo.achName) + 1) * sizeof(WCHAR));
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if (!*Id)
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return E_OUTOFMEMORY;
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strcpyW(*Id, This->pinInfo.achName);
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return S_OK;
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}
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HRESULT WINAPI BasePinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
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{
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TRACE("(%p)->(%p)\n", iface, pmt);
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return S_OK;
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}
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HRESULT WINAPI BasePinImpl_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum)
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{
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BasePin *This = (BasePin *)iface;
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TRACE("(%p/%p)->(%p)\n", This, iface, ppEnum);
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/* override this method to allow enumeration of your types */
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return EnumMediaTypes_Construct(iface, BasePinImpl_GetMediaType, BasePinImpl_GetMediaTypeVersion , ppEnum);
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}
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HRESULT WINAPI BasePinImpl_QueryInternalConnections(IPin * iface, IPin ** apPin, ULONG * cPin)
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{
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BasePin *This = (BasePin *)iface;
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TRACE("(%p/%p)->(%p, %p)\n", This, iface, apPin, cPin);
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return E_NOTIMPL; /* to tell caller that all input pins connected to all output pins */
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}
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