wine/dlls/strmbase/filter.c
2012-03-26 18:15:48 +02:00

229 lines
6.3 KiB
C

/*
* 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
*/
#define COBJMACROS
#include "dshow.h"
#include "wine/debug.h"
#include "wine/unicode.h"
#include "wine/strmbase.h"
#include "uuids.h"
#include <assert.h>
WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
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)
{
BaseFilter *This = impl_from_IBaseFilter(iface);
TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
*ppv = NULL;
if (IsEqualIID(riid, &IID_IUnknown))
*ppv = This;
else if (IsEqualIID(riid, &IID_IPersist))
*ppv = This;
else if (IsEqualIID(riid, &IID_IMediaFilter))
*ppv = This;
else if (IsEqualIID(riid, &IID_IBaseFilter))
*ppv = This;
if (*ppv)
{
IUnknown_AddRef((IUnknown *)(*ppv));
return S_OK;
}
return E_NOINTERFACE;
}
ULONG WINAPI BaseFilterImpl_AddRef(IBaseFilter * iface)
{
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)
{
BaseFilter *This = impl_from_IBaseFilter(iface);
ULONG refCount = InterlockedDecrement(&This->refCount);
TRACE("(%p)->() Release from %d\n", This, refCount + 1);
if (!refCount)
{
if (This->pClock)
IReferenceClock_Release(This->pClock);
This->IBaseFilter_iface.lpVtbl = NULL;
This->csFilter.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&This->csFilter);
}
return refCount;
}
HRESULT WINAPI BaseFilterImpl_GetClassID(IBaseFilter * iface, CLSID * pClsid)
{
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 )
{
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)
{
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)
{
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 **ppEnum)
{
BaseFilter *This = impl_from_IBaseFilter(iface);
TRACE("(%p)->(%p)\n", iface, ppEnum);
return EnumPins_Construct(This, This->pFuncsTable->pfnGetPin, This->pFuncsTable->pfnGetPinCount, BaseFilterImpl_GetPinVersion, ppEnum);
}
HRESULT WINAPI BaseFilterImpl_QueryFilterInfo(IBaseFilter * iface, FILTER_INFO *pInfo)
{
BaseFilter *This = impl_from_IBaseFilter(iface);
TRACE("(%p)->(%p)\n", This, pInfo);
strcpyW(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 )
{
HRESULT hr = S_OK;
BaseFilter *This = impl_from_IBaseFilter(iface);
TRACE("(%p)->(%p, %s)\n", This, pGraph, debugstr_w(pName));
EnterCriticalSection(&This->csFilter);
{
if (pName)
strcpyW(This->filterInfo.achName, pName);
else
*This->filterInfo.achName = '\0';
This->filterInfo.pGraph = pGraph; /* NOTE: do NOT increase ref. count */
}
LeaveCriticalSection(&This->csFilter);
return hr;
}
HRESULT WINAPI BaseFilterImpl_QueryVendorInfo(IBaseFilter * iface, LPWSTR *pVendorInfo)
{
TRACE("(%p)->(%p)\n", iface, pVendorInfo);
return E_NOTIMPL;
}
LONG WINAPI BaseFilterImpl_GetPinVersion(BaseFilter * This)
{
TRACE("(%p)\n", This);
return This->pinVersion;
}
VOID WINAPI BaseFilterImpl_IncrementPinVersion(BaseFilter * This)
{
InterlockedIncrement(&This->pinVersion);
TRACE("(%p) -> New pinVersion %i\n", This,This->pinVersion);
}
HRESULT WINAPI BaseFilter_Init(BaseFilter * This, const IBaseFilterVtbl *Vtbl, const CLSID *pClsid, DWORD_PTR DebugInfo, const BaseFilterFuncTable* pBaseFuncsTable)
{
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->pinVersion = 1;
This->pFuncsTable = pBaseFuncsTable;
return S_OK;
}