320 lines
8.6 KiB
C
320 lines
8.6 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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#include "strmbase_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
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static inline BaseFilter *impl_from_IUnknown(IUnknown *iface)
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{
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return CONTAINING_RECORD(iface, BaseFilter, IUnknown_inner);
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}
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static HRESULT WINAPI filter_inner_QueryInterface(IUnknown *iface, REFIID iid, void **out)
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{
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BaseFilter *filter = impl_from_IUnknown(iface);
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HRESULT hr;
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TRACE("iface %p, iid %s, out %p.\n", iface, debugstr_guid(iid), out);
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*out = NULL;
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if (filter->pFuncsTable->filter_query_interface
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&& SUCCEEDED(hr = filter->pFuncsTable->filter_query_interface(filter, iid, out)))
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{
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return hr;
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}
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if (IsEqualIID(iid, &IID_IUnknown))
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*out = iface;
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else if (IsEqualIID(iid, &IID_IPersist)
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|| IsEqualIID(iid, &IID_IMediaFilter)
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|| IsEqualIID(iid, &IID_IBaseFilter))
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{
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*out = &filter->IBaseFilter_iface;
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}
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else
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{
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WARN("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(iid));
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return E_NOINTERFACE;
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}
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IUnknown_AddRef((IUnknown *)*out);
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return S_OK;
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}
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static ULONG WINAPI filter_inner_AddRef(IUnknown *iface)
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{
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BaseFilter *filter = impl_from_IUnknown(iface);
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ULONG refcount = InterlockedIncrement(&filter->refcount);
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TRACE("%p increasing refcount to %u.\n", filter, refcount);
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return refcount;
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}
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static ULONG WINAPI filter_inner_Release(IUnknown *iface)
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{
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BaseFilter *filter = impl_from_IUnknown(iface);
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ULONG refcount = InterlockedDecrement(&filter->refcount);
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TRACE("%p decreasing refcount to %u.\n", filter, refcount);
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if (!refcount)
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filter->pFuncsTable->filter_destroy(filter);
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return refcount;
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}
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static const IUnknownVtbl filter_inner_vtbl =
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{
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filter_inner_QueryInterface,
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filter_inner_AddRef,
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filter_inner_Release,
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};
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static inline BaseFilter *impl_from_IBaseFilter(IBaseFilter *iface)
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{
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return CONTAINING_RECORD(iface, BaseFilter, IBaseFilter_iface);
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}
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HRESULT WINAPI BaseFilterImpl_QueryInterface(IBaseFilter *iface, REFIID iid, void **out)
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{
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BaseFilter *filter = impl_from_IBaseFilter(iface);
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return IUnknown_QueryInterface(filter->outer_unk, iid, out);
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}
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ULONG WINAPI BaseFilterImpl_AddRef(IBaseFilter *iface)
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{
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BaseFilter *filter = impl_from_IBaseFilter(iface);
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return IUnknown_AddRef(filter->outer_unk);
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}
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ULONG WINAPI BaseFilterImpl_Release(IBaseFilter *iface)
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{
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BaseFilter *filter = impl_from_IBaseFilter(iface);
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return IUnknown_Release(filter->outer_unk);
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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 = impl_from_IBaseFilter(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_Stop(IBaseFilter *iface)
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{
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BaseFilter *filter = impl_from_IBaseFilter(iface);
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TRACE("iface %p.\n", iface);
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EnterCriticalSection(&filter->csFilter);
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filter->state = State_Stopped;
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LeaveCriticalSection(&filter->csFilter);
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return S_OK;
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}
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HRESULT WINAPI BaseFilterImpl_Pause(IBaseFilter *iface)
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{
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BaseFilter *filter = impl_from_IBaseFilter(iface);
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TRACE("iface %p.\n", iface);
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EnterCriticalSection(&filter->csFilter);
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filter->state = State_Paused;
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LeaveCriticalSection(&filter->csFilter);
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return S_OK;
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}
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HRESULT WINAPI BaseFilterImpl_Run(IBaseFilter *iface, REFERENCE_TIME start)
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{
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BaseFilter *filter = impl_from_IBaseFilter(iface);
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TRACE("iface %p, start %s.\n", iface, wine_dbgstr_longlong(start));
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EnterCriticalSection(&filter->csFilter);
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filter->state = State_Running;
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LeaveCriticalSection(&filter->csFilter);
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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 = impl_from_IBaseFilter(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 = impl_from_IBaseFilter(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 = impl_from_IBaseFilter(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_EnumPins(IBaseFilter *iface, IEnumPins **enum_pins)
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{
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BaseFilter *filter = impl_from_IBaseFilter(iface);
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TRACE("iface %p, enum_pins %p.\n", iface, enum_pins);
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return enum_pins_create(filter, enum_pins);
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}
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HRESULT WINAPI BaseFilterImpl_FindPin(IBaseFilter *iface, const WCHAR *id, IPin **ret)
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{
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BaseFilter *This = impl_from_IBaseFilter(iface);
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unsigned int i;
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PIN_INFO info;
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HRESULT hr;
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IPin *pin;
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TRACE("(%p)->(%s, %p)\n", This, debugstr_w(id), ret);
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for (i = 0; (pin = This->pFuncsTable->filter_get_pin(This, i)); ++i)
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{
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hr = IPin_QueryPinInfo(pin, &info);
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if (FAILED(hr))
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return hr;
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if (info.pFilter) IBaseFilter_Release(info.pFilter);
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if (!lstrcmpW(id, info.achName))
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{
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IPin_AddRef(*ret = pin);
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return S_OK;
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}
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}
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return VFW_E_NOT_FOUND;
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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 = impl_from_IBaseFilter(iface);
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TRACE("(%p)->(%p)\n", This, pInfo);
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lstrcpyW(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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BaseFilter *This = impl_from_IBaseFilter(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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lstrcpyW(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 S_OK;
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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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VOID WINAPI BaseFilterImpl_IncrementPinVersion(BaseFilter *filter)
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{
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InterlockedIncrement(&filter->pin_version);
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}
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void strmbase_filter_init(BaseFilter *filter, const IBaseFilterVtbl *vtbl, IUnknown *outer,
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const CLSID *clsid, const struct strmbase_filter_ops *func_table)
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{
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memset(filter, 0, sizeof(*filter));
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filter->IBaseFilter_iface.lpVtbl = vtbl;
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filter->IUnknown_inner.lpVtbl = &filter_inner_vtbl;
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filter->outer_unk = outer ? outer : &filter->IUnknown_inner;
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filter->refcount = 1;
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InitializeCriticalSection(&filter->csFilter);
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filter->csFilter.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": BaseFilter.csFilter");
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filter->clsid = *clsid;
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filter->pin_version = 1;
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filter->pFuncsTable = func_table;
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}
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void strmbase_filter_cleanup(BaseFilter *This)
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{
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if (This->pClock)
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IReferenceClock_Release(This->pClock);
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This->IBaseFilter_iface.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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