Sweden-Number/dlls/qedit/nullrenderer.c

204 lines
5.3 KiB
C

/*
* Null renderer filter
*
* Copyright 2004 Christian Costa
* Copyright 2008 Maarten Lankhorst
*
* 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/strmbase.h"
WINE_DEFAULT_DEBUG_CHANNEL(qedit);
typedef struct NullRendererImpl
{
BaseRenderer renderer;
IUnknown IUnknown_inner;
IUnknown *outer_unk;
} NullRendererImpl;
static HRESULT WINAPI NullRenderer_DoRenderSample(BaseRenderer *iface, IMediaSample *pMediaSample)
{
return S_OK;
}
static HRESULT WINAPI NullRenderer_CheckMediaType(BaseRenderer *iface, const AM_MEDIA_TYPE * pmt)
{
TRACE("Not a stub!\n");
return S_OK;
}
static const BaseRendererFuncTable RendererFuncTable = {
NullRenderer_CheckMediaType,
NullRenderer_DoRenderSample,
/**/
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
/**/
NULL,
NULL,
NULL,
NULL,
NULL,
};
static inline NullRendererImpl *impl_from_IUnknown(IUnknown *iface)
{
return CONTAINING_RECORD(iface, NullRendererImpl, IUnknown_inner);
}
static HRESULT WINAPI NullRendererInner_QueryInterface(IUnknown *iface, REFIID riid, void **ppv)
{
NullRendererImpl *This = impl_from_IUnknown(iface);
TRACE("filter %p, iid %s, out %p.\n", This, debugstr_guid(riid), ppv);
*ppv = NULL;
if (IsEqualIID(riid, &IID_IUnknown))
*ppv = &This->IUnknown_inner;
else
{
HRESULT hr;
hr = BaseRendererImpl_QueryInterface(&This->renderer.filter.IBaseFilter_iface, riid, ppv);
if (SUCCEEDED(hr))
return hr;
}
if (*ppv)
{
IUnknown_AddRef((IUnknown *)*ppv);
return S_OK;
}
if (!IsEqualIID(riid, &IID_IPin) && !IsEqualIID(riid, &IID_IVideoWindow))
FIXME("%s not implemented, returning E_NOINTERFACE.\n", debugstr_guid(riid));
return E_NOINTERFACE;
}
static ULONG WINAPI NullRendererInner_AddRef(IUnknown *iface)
{
NullRendererImpl *This = impl_from_IUnknown(iface);
return BaseFilterImpl_AddRef(&This->renderer.filter.IBaseFilter_iface);
}
static ULONG WINAPI NullRendererInner_Release(IUnknown *iface)
{
NullRendererImpl *This = impl_from_IUnknown(iface);
ULONG refCount = InterlockedDecrement(&This->renderer.filter.refCount);
if (!refCount)
{
TRACE("Destroying Null Renderer\n");
strmbase_renderer_cleanup(&This->renderer);
CoTaskMemFree(This);
}
return refCount;
}
static const IUnknownVtbl IInner_VTable =
{
NullRendererInner_QueryInterface,
NullRendererInner_AddRef,
NullRendererInner_Release
};
static inline NullRendererImpl *impl_from_IBaseFilter(IBaseFilter *iface)
{
return CONTAINING_RECORD(iface, NullRendererImpl, renderer.filter.IBaseFilter_iface);
}
static HRESULT WINAPI NullRenderer_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv)
{
NullRendererImpl *This = impl_from_IBaseFilter(iface);
return IUnknown_QueryInterface(This->outer_unk, riid, ppv);
}
static ULONG WINAPI NullRenderer_AddRef(IBaseFilter * iface)
{
NullRendererImpl *This = impl_from_IBaseFilter(iface);
return IUnknown_AddRef(This->outer_unk);
}
static ULONG WINAPI NullRenderer_Release(IBaseFilter * iface)
{
NullRendererImpl *This = impl_from_IBaseFilter(iface);
return IUnknown_Release(This->outer_unk);
}
static const IBaseFilterVtbl NullRenderer_Vtbl =
{
NullRenderer_QueryInterface,
NullRenderer_AddRef,
NullRenderer_Release,
BaseFilterImpl_GetClassID,
BaseRendererImpl_Stop,
BaseRendererImpl_Pause,
BaseRendererImpl_Run,
BaseRendererImpl_GetState,
BaseRendererImpl_SetSyncSource,
BaseFilterImpl_GetSyncSource,
BaseFilterImpl_EnumPins,
BaseFilterImpl_FindPin,
BaseFilterImpl_QueryFilterInfo,
BaseFilterImpl_JoinFilterGraph,
BaseFilterImpl_QueryVendorInfo
};
HRESULT NullRenderer_create(IUnknown *pUnkOuter, void **ppv)
{
static const WCHAR sink_name[] = {'I','n',0};
HRESULT hr;
NullRendererImpl *pNullRenderer;
TRACE("(%p, %p)\n", pUnkOuter, ppv);
*ppv = NULL;
pNullRenderer = CoTaskMemAlloc(sizeof(NullRendererImpl));
pNullRenderer->IUnknown_inner.lpVtbl = &IInner_VTable;
if (pUnkOuter)
pNullRenderer->outer_unk = pUnkOuter;
else
pNullRenderer->outer_unk = &pNullRenderer->IUnknown_inner;
hr = strmbase_renderer_init(&pNullRenderer->renderer, &NullRenderer_Vtbl, pUnkOuter,
&CLSID_NullRenderer, sink_name,
(DWORD_PTR)(__FILE__ ": NullRendererImpl.csFilter"), &RendererFuncTable);
if (FAILED(hr))
CoTaskMemFree(pNullRenderer);
else
*ppv = &pNullRenderer->IUnknown_inner;
return S_OK;
}