199 lines
5.3 KiB
C
199 lines
5.3 KiB
C
/*
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* Generic Implementation of IBaseFilter Interface
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*
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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 <assert.h>
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WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
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HRESULT WINAPI BaseFilterImpl_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv)
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{
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BaseFilter *This = (BaseFilter *)iface;
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TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
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*ppv = NULL;
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if (IsEqualIID(riid, &IID_IUnknown))
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*ppv = This;
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else if (IsEqualIID(riid, &IID_IPersist))
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*ppv = This;
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else if (IsEqualIID(riid, &IID_IMediaFilter))
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*ppv = This;
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else if (IsEqualIID(riid, &IID_IBaseFilter))
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*ppv = This;
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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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return E_NOINTERFACE;
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}
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ULONG WINAPI BaseFilterImpl_AddRef(IBaseFilter * iface)
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{
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BaseFilter *This = (BaseFilter*)iface;
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ULONG refCount = InterlockedIncrement(&This->refCount);
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TRACE("(%p)->() AddRef from %d\n", This, refCount - 1);
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return refCount;
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}
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ULONG WINAPI BaseFilterImpl_Release(IBaseFilter * iface)
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{
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BaseFilter *This = (BaseFilter *)iface;
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ULONG refCount = InterlockedDecrement(&This->refCount);
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TRACE("(%p)->() Release from %d\n", This, refCount + 1);
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if (!refCount)
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{
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if (This->pClock)
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IReferenceClock_Release(This->pClock);
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This->lpVtbl = NULL;
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This->csFilter.DebugInfo->Spare[0] = 0;
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DeleteCriticalSection(&This->csFilter);
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}
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return refCount;
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}
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HRESULT WINAPI BaseFilterImpl_GetClassID(IBaseFilter * iface, CLSID * pClsid)
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{
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BaseFilter *This = (BaseFilter*)iface;
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TRACE("(%p)->(%p)\n", This, pClsid);
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*pClsid = This->clsid;
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return S_OK;
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}
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HRESULT WINAPI BaseFilterImpl_GetState(IBaseFilter * iface, DWORD dwMilliSecsTimeout, FILTER_STATE *pState )
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{
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BaseFilter *This = (BaseFilter*)iface;
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TRACE("(%p)->(%d, %p)\n", This, dwMilliSecsTimeout, pState);
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EnterCriticalSection(&This->csFilter);
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{
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*pState = This->state;
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}
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LeaveCriticalSection(&This->csFilter);
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return S_OK;
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}
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HRESULT WINAPI BaseFilterImpl_SetSyncSource(IBaseFilter * iface, IReferenceClock *pClock)
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{
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BaseFilter *This = (BaseFilter*)iface;
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TRACE("(%p)->(%p)\n", This, pClock);
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EnterCriticalSection(&This->csFilter);
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{
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if (This->pClock)
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IReferenceClock_Release(This->pClock);
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This->pClock = pClock;
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if (This->pClock)
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IReferenceClock_AddRef(This->pClock);
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}
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LeaveCriticalSection(&This->csFilter);
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return S_OK;
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}
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HRESULT WINAPI BaseFilterImpl_GetSyncSource(IBaseFilter * iface, IReferenceClock **ppClock)
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{
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BaseFilter *This = (BaseFilter*)iface;
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TRACE("(%p)->(%p)\n", This, ppClock);
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EnterCriticalSection(&This->csFilter);
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{
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*ppClock = This->pClock;
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if (This->pClock)
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IReferenceClock_AddRef(This->pClock);
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}
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LeaveCriticalSection(&This->csFilter);
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return S_OK;
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}
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HRESULT WINAPI BaseFilterImpl_QueryFilterInfo(IBaseFilter * iface, FILTER_INFO *pInfo)
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{
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BaseFilter *This = (BaseFilter*)iface;
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TRACE("(%p)->(%p)\n", This, pInfo);
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strcpyW(pInfo->achName, This->filterInfo.achName);
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pInfo->pGraph = This->filterInfo.pGraph;
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if (pInfo->pGraph)
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IFilterGraph_AddRef(pInfo->pGraph);
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return S_OK;
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}
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HRESULT WINAPI BaseFilterImpl_JoinFilterGraph(IBaseFilter * iface, IFilterGraph *pGraph, LPCWSTR pName )
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{
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HRESULT hr = S_OK;
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BaseFilter *This = (BaseFilter*)iface;
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TRACE("(%p)->(%p, %s)\n", This, pGraph, debugstr_w(pName));
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EnterCriticalSection(&This->csFilter);
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{
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if (pName)
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strcpyW(This->filterInfo.achName, pName);
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else
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*This->filterInfo.achName = '\0';
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This->filterInfo.pGraph = pGraph; /* NOTE: do NOT increase ref. count */
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}
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LeaveCriticalSection(&This->csFilter);
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return hr;
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}
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HRESULT WINAPI BaseFilterImpl_QueryVendorInfo(IBaseFilter * iface, LPWSTR *pVendorInfo)
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{
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TRACE("(%p)->(%p)\n", iface, pVendorInfo);
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return E_NOTIMPL;
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}
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HRESULT WINAPI BaseFilter_Init(BaseFilter * This, const IBaseFilterVtbl *Vtbl, const CLSID *pClsid, DWORD_PTR DebugInfo)
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{
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This->lpVtbl = Vtbl;
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This->refCount = 1;
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InitializeCriticalSection(&This->csFilter);
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This->state = State_Stopped;
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This->rtStreamStart = 0;
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This->pClock = NULL;
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ZeroMemory(&This->filterInfo, sizeof(FILTER_INFO));
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This->clsid = *pClsid;
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This->csFilter.DebugInfo->Spare[0] = DebugInfo;
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return S_OK;
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}
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