Sweden-Number/dlls/strmbase/filter.c

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/*
* Generic Implementation of IBaseFilter Interface
*
* Copyright 2010 Aric Stewart, CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "strmbase_private.h"
WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
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static inline BaseFilter *impl_from_IBaseFilter(IBaseFilter *iface)
{
return CONTAINING_RECORD(iface, BaseFilter, IBaseFilter_iface);
}
HRESULT WINAPI BaseFilterImpl_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv)
{
TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
*ppv = NULL;
if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IPersist) ||
IsEqualIID(riid, &IID_IMediaFilter) || IsEqualIID(riid, &IID_IBaseFilter))
{
*ppv = iface;
IBaseFilter_AddRef(iface);
return S_OK;
}
return E_NOINTERFACE;
}
ULONG WINAPI BaseFilterImpl_AddRef(IBaseFilter * iface)
{
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BaseFilter *This = impl_from_IBaseFilter(iface);
ULONG refCount = InterlockedIncrement(&This->refCount);
TRACE("(%p)->() AddRef from %d\n", This, refCount - 1);
return refCount;
}
ULONG WINAPI BaseFilterImpl_Release(IBaseFilter * iface)
{
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BaseFilter *This = impl_from_IBaseFilter(iface);
ULONG refCount = InterlockedDecrement(&This->refCount);
TRACE("(%p)->() Release from %d\n", This, refCount + 1);
if (!refCount)
strmbase_filter_cleanup(This);
return refCount;
}
HRESULT WINAPI BaseFilterImpl_GetClassID(IBaseFilter * iface, CLSID * pClsid)
{
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BaseFilter *This = impl_from_IBaseFilter(iface);
TRACE("(%p)->(%p)\n", This, pClsid);
*pClsid = This->clsid;
return S_OK;
}
HRESULT WINAPI BaseFilterImpl_GetState(IBaseFilter * iface, DWORD dwMilliSecsTimeout, FILTER_STATE *pState )
{
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BaseFilter *This = impl_from_IBaseFilter(iface);
TRACE("(%p)->(%d, %p)\n", This, dwMilliSecsTimeout, pState);
EnterCriticalSection(&This->csFilter);
{
*pState = This->state;
}
LeaveCriticalSection(&This->csFilter);
return S_OK;
}
HRESULT WINAPI BaseFilterImpl_SetSyncSource(IBaseFilter * iface, IReferenceClock *pClock)
{
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BaseFilter *This = impl_from_IBaseFilter(iface);
TRACE("(%p)->(%p)\n", This, pClock);
EnterCriticalSection(&This->csFilter);
{
if (This->pClock)
IReferenceClock_Release(This->pClock);
This->pClock = pClock;
if (This->pClock)
IReferenceClock_AddRef(This->pClock);
}
LeaveCriticalSection(&This->csFilter);
return S_OK;
}
HRESULT WINAPI BaseFilterImpl_GetSyncSource(IBaseFilter * iface, IReferenceClock **ppClock)
{
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BaseFilter *This = impl_from_IBaseFilter(iface);
TRACE("(%p)->(%p)\n", This, ppClock);
EnterCriticalSection(&This->csFilter);
{
*ppClock = This->pClock;
if (This->pClock)
IReferenceClock_AddRef(This->pClock);
}
LeaveCriticalSection(&This->csFilter);
return S_OK;
}
HRESULT WINAPI BaseFilterImpl_EnumPins(IBaseFilter *iface, IEnumPins **enum_pins)
{
BaseFilter *filter = impl_from_IBaseFilter(iface);
TRACE("iface %p, enum_pins %p.\n", iface, enum_pins);
return enum_pins_create(filter, enum_pins);
}
HRESULT WINAPI BaseFilterImpl_FindPin(IBaseFilter *iface, const WCHAR *id, IPin **ret)
{
BaseFilter *This = impl_from_IBaseFilter(iface);
PIN_INFO info;
HRESULT hr;
IPin *pin;
int i;
TRACE("(%p)->(%s, %p)\n", This, debugstr_w(id), ret);
for (i = 0; (pin = This->pFuncsTable->pfnGetPin(This, i)); ++i)
{
hr = IPin_QueryPinInfo(pin, &info);
if (FAILED(hr))
{
IPin_Release(pin);
return hr;
}
if (info.pFilter) IBaseFilter_Release(info.pFilter);
if (!lstrcmpW(id, info.achName))
{
*ret = pin;
return S_OK;
}
IPin_Release(pin);
}
return VFW_E_NOT_FOUND;
}
HRESULT WINAPI BaseFilterImpl_QueryFilterInfo(IBaseFilter * iface, FILTER_INFO *pInfo)
{
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BaseFilter *This = impl_from_IBaseFilter(iface);
TRACE("(%p)->(%p)\n", This, pInfo);
lstrcpyW(pInfo->achName, This->filterInfo.achName);
pInfo->pGraph = This->filterInfo.pGraph;
if (pInfo->pGraph)
IFilterGraph_AddRef(pInfo->pGraph);
return S_OK;
}
HRESULT WINAPI BaseFilterImpl_JoinFilterGraph(IBaseFilter * iface, IFilterGraph *pGraph, LPCWSTR pName )
{
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BaseFilter *This = impl_from_IBaseFilter(iface);
TRACE("(%p)->(%p, %s)\n", This, pGraph, debugstr_w(pName));
EnterCriticalSection(&This->csFilter);
{
if (pName)
lstrcpyW(This->filterInfo.achName, pName);
else
*This->filterInfo.achName = '\0';
This->filterInfo.pGraph = pGraph; /* NOTE: do NOT increase ref. count */
}
LeaveCriticalSection(&This->csFilter);
return S_OK;
}
HRESULT WINAPI BaseFilterImpl_QueryVendorInfo(IBaseFilter * iface, LPWSTR *pVendorInfo)
{
TRACE("(%p)->(%p)\n", iface, pVendorInfo);
return E_NOTIMPL;
}
VOID WINAPI BaseFilterImpl_IncrementPinVersion(BaseFilter *filter)
{
InterlockedIncrement(&filter->pin_version);
}
void BaseFilter_Init(BaseFilter *This, const IBaseFilterVtbl *Vtbl, const CLSID *pClsid,
DWORD_PTR DebugInfo, const BaseFilterFuncTable *pBaseFuncsTable)
{
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This->IBaseFilter_iface.lpVtbl = Vtbl;
This->refCount = 1;
InitializeCriticalSection(&This->csFilter);
This->state = State_Stopped;
This->rtStreamStart = 0;
This->pClock = NULL;
ZeroMemory(&This->filterInfo, sizeof(FILTER_INFO));
This->clsid = *pClsid;
This->csFilter.DebugInfo->Spare[0] = DebugInfo;
This->pin_version = 1;
This->pFuncsTable = pBaseFuncsTable;
}
void strmbase_filter_cleanup(BaseFilter *This)
{
if (This->pClock)
IReferenceClock_Release(This->pClock);
This->IBaseFilter_iface.lpVtbl = NULL;
This->csFilter.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&This->csFilter);
}