vfwcapture.c

Go to the documentation of this file.

/* Video For Windows Steering structure
 *
 * Copyright 2005 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 "config.h"
#include <stdarg.h>
 
#include "windef.h"
#include "winbase.h"
#include "wtypes.h"
#include "wingdi.h"
#include "winuser.h"
#include "dshow.h"
 
#include "qcap_main.h"
#include "wine/debug.h"
 
#include "capture.h"
#include "uuids.h"
#include "vfwmsgs.h"
#include "amvideo.h"
#include "strmif.h"
#include "ddraw.h"
#include "ocidl.h"
#include "oleauto.h"
 
WINE_DEFAULT_DEBUG_CHANNEL(qcap);
 
static const IBaseFilterVtbl VfwCapture_Vtbl;
static const IAMStreamConfigVtbl IAMStreamConfig_VTable;
static const IAMVideoProcAmpVtbl IAMVideoProcAmp_VTable;
static const IPersistPropertyBagVtbl IPersistPropertyBag_VTable;
static const IPinVtbl VfwPin_Vtbl;
 
static HRESULT VfwPin_Construct( IBaseFilter *, LPCRITICAL_SECTION, IPin ** );
 
typedef struct VfwCapture
{
    IUnknown IUnknown_inner;
    BaseFilter filter;
    IAMStreamConfig IAMStreamConfig_iface;
    IAMVideoProcAmp IAMVideoProcAmp_iface;
    IPersistPropertyBag IPersistPropertyBag_iface;
    IUnknown *outer_unk;
    BOOL init;
    Capture *driver_info;
 
    IPin * pOutputPin;
} VfwCapture;
 
static inline VfwCapture *impl_from_IUnknown(IUnknown *iface)
{
    return CONTAINING_RECORD(iface, VfwCapture, IUnknown_inner);
}
 
static inline VfwCapture *impl_from_BaseFilter(BaseFilter *iface)
{
    return CONTAINING_RECORD(iface, VfwCapture, filter);
}
 
static inline VfwCapture *impl_from_IBaseFilter(IBaseFilter *iface)
{
    return CONTAINING_RECORD(iface, VfwCapture, filter.IBaseFilter_iface);
}
 
static inline VfwCapture *impl_from_IAMStreamConfig(IAMStreamConfig *iface)
{
    return CONTAINING_RECORD(iface, VfwCapture, IAMStreamConfig_iface);
}
 
static inline VfwCapture *impl_from_IAMVideoProcAmp(IAMVideoProcAmp *iface)
{
    return CONTAINING_RECORD(iface, VfwCapture, IAMVideoProcAmp_iface);
}
 
static inline VfwCapture *impl_from_IPersistPropertyBag(IPersistPropertyBag *iface)
{
    return CONTAINING_RECORD(iface, VfwCapture, IPersistPropertyBag_iface);
}
 
/* VfwPin implementation */
typedef struct VfwPinImpl
{
    BaseOutputPin pin;
    IKsPropertySet IKsPropertySet_iface;
    VfwCapture *parent;
} VfwPinImpl;
 
 
/* VfwCapture inner IUnknown */
static HRESULT WINAPI unknown_inner_QueryInterface(IUnknown *iface, REFIID riid, void **ret_iface)
{
    VfwCapture *This = impl_from_IUnknown(iface);
 
    TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ret_iface);
 
    *ret_iface = NULL;
 
    if (IsEqualIID(riid, &IID_IUnknown))
        *ret_iface = &This->IUnknown_inner;
    else if (IsEqualIID(riid, &IID_IPersist) || IsEqualIID(riid, &IID_IMediaFilter) ||
        IsEqualIID(riid, &IID_IBaseFilter))
        *ret_iface = &This->filter.IBaseFilter_iface;
    else if (IsEqualIID(riid, &IID_IPersistPropertyBag))
        *ret_iface = &This->IPersistPropertyBag_iface;
    else if (IsEqualIID(riid, &IID_IAMFilterMiscFlags))
        FIXME("IAMFilterMiscFlags not supported yet!\n");
    else if (IsEqualIID(riid, &IID_ISpecifyPropertyPages))
        FIXME("ISpecifyPropertyPages not supported yet!\n");
    else if (IsEqualIID(riid, &IID_IAMVfwCaptureDialogs))
        FIXME("IAMVfwCaptureDialogs not supported yet!\n");
    else if (IsEqualIID(riid, &IID_IAMStreamConfig))
        *ret_iface = &This->IAMStreamConfig_iface;
    else if (IsEqualIID(riid, &IID_IAMVideoProcAmp))
        *ret_iface = &This->IAMVideoProcAmp_iface;
    else
        WARN("(%p, %s, %p): not found\n", This, debugstr_guid(riid), ret_iface);
 
    if (!*ret_iface)
        return E_NOINTERFACE;
 
    IUnknown_AddRef((IUnknown*)*ret_iface);
    return S_OK;
}
 
static ULONG WINAPI unknown_inner_AddRef(IUnknown *iface)
{
    VfwCapture *This = impl_from_IUnknown(iface);
    ULONG ref = BaseFilterImpl_AddRef(&This->filter.IBaseFilter_iface);
 
    TRACE("(%p) ref=%d\n", This, ref);
 
    return ref;
}
 
static ULONG WINAPI unknown_inner_Release(IUnknown *iface)
{
    VfwCapture *This = impl_from_IUnknown(iface);
    ULONG ref = InterlockedDecrement(&This->filter.refCount);
 
    TRACE("(%p) ref=%d\n", This, ref);
 
    if (!ref)
    {
        IPin *conn = NULL;
 
        TRACE("destroying everything\n");
        if (This->init)
        {
            if (This->filter.state != State_Stopped)
                qcap_driver_stop(This->driver_info, &This->filter.state);
            qcap_driver_destroy(This->driver_info);
        }
        IPin_ConnectedTo(This->pOutputPin, &conn);
        if (conn)
        {
            IPin_Disconnect(conn);
            IPin_Disconnect(This->pOutputPin);
            IPin_Release(conn);
        }
        IPin_Release(This->pOutputPin);
        BaseFilter_Destroy(&This->filter);
        CoTaskMemFree(This);
        ObjectRefCount(FALSE);
    }
 
    return ref;
}
 
static const IUnknownVtbl unknown_inner_vtbl =
{
    unknown_inner_QueryInterface,
    unknown_inner_AddRef,
    unknown_inner_Release,
};
 
static IPin* WINAPI VfwCapture_GetPin(BaseFilter *iface, int pos)
{
    VfwCapture *This = impl_from_BaseFilter(iface);
 
    if (pos >= 1 || pos < 0)
        return NULL;
 
    IPin_AddRef(This->pOutputPin);
    return This->pOutputPin;
}
 
static LONG WINAPI VfwCapture_GetPinCount(BaseFilter *iface)
{
    return 1;
}
 
static const BaseFilterFuncTable BaseFuncTable = {
    VfwCapture_GetPin,
    VfwCapture_GetPinCount
};
 
IUnknown * WINAPI QCAP_createVFWCaptureFilter(IUnknown *pUnkOuter, HRESULT *phr)
{
    VfwCapture *pVfwCapture;
    HRESULT hr;
 
    TRACE("%p - %p\n", pUnkOuter, phr);
 
    *phr = E_OUTOFMEMORY;
    pVfwCapture = CoTaskMemAlloc( sizeof(VfwCapture) );
    if (!pVfwCapture)
        return NULL;
 
    BaseFilter_Init(&pVfwCapture->filter, &VfwCapture_Vtbl, &CLSID_VfwCapture, (DWORD_PTR)(__FILE__ ": VfwCapture.csFilter"), &BaseFuncTable);
 
    pVfwCapture->IUnknown_inner.lpVtbl = &unknown_inner_vtbl;
    pVfwCapture->IAMStreamConfig_iface.lpVtbl = &IAMStreamConfig_VTable;
    pVfwCapture->IAMVideoProcAmp_iface.lpVtbl = &IAMVideoProcAmp_VTable;
    pVfwCapture->IPersistPropertyBag_iface.lpVtbl = &IPersistPropertyBag_VTable;
    pVfwCapture->init = FALSE;
 
    if (pUnkOuter)
        pVfwCapture->outer_unk = pUnkOuter;
    else
        pVfwCapture->outer_unk = &pVfwCapture->IUnknown_inner;
 
    hr = VfwPin_Construct(&pVfwCapture->filter.IBaseFilter_iface,
                   &pVfwCapture->filter.csFilter, &pVfwCapture->pOutputPin);
    if (FAILED(hr))
    {
        CoTaskMemFree(pVfwCapture);
        return NULL;
    }
    TRACE("-- created at %p\n", pVfwCapture);
 
    ObjectRefCount(TRUE);
    *phr = S_OK;
    return &pVfwCapture->IUnknown_inner;
}
 
static HRESULT WINAPI VfwCapture_QueryInterface(IBaseFilter *iface, REFIID riid, void **ret_iface)
{
    VfwCapture *This = impl_from_IBaseFilter(iface);
 
    return IUnknown_QueryInterface(This->outer_unk, riid, ret_iface);
}
 
static ULONG WINAPI VfwCapture_AddRef(IBaseFilter *iface)
{
    VfwCapture *This = impl_from_IBaseFilter(iface);
 
    return IUnknown_AddRef(This->outer_unk);
}
 
static ULONG WINAPI VfwCapture_Release(IBaseFilter * iface)
{
    VfwCapture *This = impl_from_IBaseFilter(iface);
 
    return IUnknown_Release(This->outer_unk);
}
 
static HRESULT WINAPI VfwCapture_Stop(IBaseFilter * iface)
{
    VfwCapture *This = impl_from_IBaseFilter(iface);
 
    TRACE("()\n");
    return qcap_driver_stop(This->driver_info, &This->filter.state);
}
 
static HRESULT WINAPI VfwCapture_Pause(IBaseFilter * iface)
{
    VfwCapture *This = impl_from_IBaseFilter(iface);
 
    TRACE("()\n");
    return qcap_driver_pause(This->driver_info, &This->filter.state);
}
 
static HRESULT WINAPI VfwCapture_Run(IBaseFilter * iface, REFERENCE_TIME tStart)
{
    VfwCapture *This = impl_from_IBaseFilter(iface);
    TRACE("(%s)\n", wine_dbgstr_longlong(tStart));
    return qcap_driver_run(This->driver_info, &This->filter.state);
}
 
static HRESULT WINAPI VfwCapture_FindPin(IBaseFilter * iface, LPCWSTR Id, IPin **ppPin)
{
    FIXME("(%s, %p) - stub\n", debugstr_w(Id), ppPin);
    return E_NOTIMPL;
}
 
static const IBaseFilterVtbl VfwCapture_Vtbl =
{
    VfwCapture_QueryInterface,
    VfwCapture_AddRef,
    VfwCapture_Release,
    BaseFilterImpl_GetClassID,
    VfwCapture_Stop,
    VfwCapture_Pause,
    VfwCapture_Run,
    BaseFilterImpl_GetState,
    BaseFilterImpl_SetSyncSource,
    BaseFilterImpl_GetSyncSource,
    BaseFilterImpl_EnumPins,
    VfwCapture_FindPin,
    BaseFilterImpl_QueryFilterInfo,
    BaseFilterImpl_JoinFilterGraph,
    BaseFilterImpl_QueryVendorInfo
};
 
/* AMStreamConfig interface, we only need to implement {G,S}etFormat */
static HRESULT WINAPI AMStreamConfig_QueryInterface(IAMStreamConfig *iface, REFIID riid,
        void **ret_iface)
{
    VfwCapture *This = impl_from_IAMStreamConfig(iface);
 
    return IUnknown_QueryInterface(This->outer_unk, riid, ret_iface);
}
 
static ULONG WINAPI AMStreamConfig_AddRef( IAMStreamConfig * iface )
{
    VfwCapture *This = impl_from_IAMStreamConfig(iface);
 
    return IUnknown_AddRef(This->outer_unk);
}
 
static ULONG WINAPI AMStreamConfig_Release( IAMStreamConfig * iface )
{
    VfwCapture *This = impl_from_IAMStreamConfig(iface);
 
    return IUnknown_Release(This->outer_unk);
}
 
static HRESULT WINAPI
AMStreamConfig_SetFormat(IAMStreamConfig *iface, AM_MEDIA_TYPE *pmt)
{
    HRESULT hr;
    VfwCapture *This = impl_from_IAMStreamConfig(iface);
    BasePin *pin;
 
    TRACE("(%p): %p->%p\n", iface, pmt, pmt ? pmt->pbFormat : NULL);
 
    if (This->filter.state != State_Stopped)
    {
        TRACE("Returning not stopped error\n");
        return VFW_E_NOT_STOPPED;
    }
 
    if (!pmt)
    {
        TRACE("pmt is NULL\n");
        return E_POINTER;
    }
 
    dump_AM_MEDIA_TYPE(pmt);
 
    pin = (BasePin *)This->pOutputPin;
    if (pin->pConnectedTo != NULL)
    {
        hr = IPin_QueryAccept(pin->pConnectedTo, pmt);
        TRACE("Would accept: %d\n", hr);
        if (hr == S_FALSE)
            return VFW_E_INVALIDMEDIATYPE;
    }
 
    hr = qcap_driver_set_format(This->driver_info, pmt);
    if (SUCCEEDED(hr) && This->filter.filterInfo.pGraph && pin->pConnectedTo )
    {
        hr = IFilterGraph_Reconnect(This->filter.filterInfo.pGraph, This->pOutputPin);
        if (SUCCEEDED(hr))
            TRACE("Reconnection completed, with new media format..\n");
    }
    TRACE("Returning: %d\n", hr);
    return hr;
}
 
static HRESULT WINAPI
AMStreamConfig_GetFormat( IAMStreamConfig *iface, AM_MEDIA_TYPE **pmt )
{
    VfwCapture *This = impl_from_IAMStreamConfig(iface);
 
    TRACE("%p -> (%p)\n", iface, pmt);
    return qcap_driver_get_format(This->driver_info, pmt);
}
 
static HRESULT WINAPI
AMStreamConfig_GetNumberOfCapabilities( IAMStreamConfig *iface, int *piCount,
                                        int *piSize )
{
    FIXME("%p: %p %p - stub, intentional\n", iface, piCount, piSize);
    *piCount = 0;
    return E_NOTIMPL; /* Not implemented for this interface */
}
 
static HRESULT WINAPI
AMStreamConfig_GetStreamCaps( IAMStreamConfig *iface, int iIndex,
                              AM_MEDIA_TYPE **pmt, BYTE *pSCC )
{
    FIXME("%p: %d %p %p - stub, intentional\n", iface, iIndex, pmt, pSCC);
    return E_NOTIMPL; /* Not implemented for this interface */
}
 
static const IAMStreamConfigVtbl IAMStreamConfig_VTable =
{
    AMStreamConfig_QueryInterface,
    AMStreamConfig_AddRef,
    AMStreamConfig_Release,
    AMStreamConfig_SetFormat,
    AMStreamConfig_GetFormat,
    AMStreamConfig_GetNumberOfCapabilities,
    AMStreamConfig_GetStreamCaps
};
 
static HRESULT WINAPI AMVideoProcAmp_QueryInterface(IAMVideoProcAmp *iface, REFIID riid,
        void **ret_iface)
{
    VfwCapture *This = impl_from_IAMVideoProcAmp(iface);
 
    return IUnknown_QueryInterface(This->outer_unk, riid, ret_iface);
}
 
static ULONG WINAPI AMVideoProcAmp_AddRef(IAMVideoProcAmp * iface)
{
    VfwCapture *This = impl_from_IAMVideoProcAmp(iface);
 
    return IUnknown_AddRef(This->outer_unk);
}
 
static ULONG WINAPI AMVideoProcAmp_Release(IAMVideoProcAmp * iface)
{
    VfwCapture *This = impl_from_IAMVideoProcAmp(iface);
 
    return IUnknown_Release(This->outer_unk);
}
 
static HRESULT WINAPI
AMVideoProcAmp_GetRange( IAMVideoProcAmp * iface, LONG Property, LONG *pMin,
        LONG *pMax, LONG *pSteppingDelta, LONG *pDefault, LONG *pCapsFlags )
{
    VfwCapture *This = impl_from_IAMVideoProcAmp(iface);
 
    return qcap_driver_get_prop_range( This->driver_info, Property, pMin, pMax,
                   pSteppingDelta, pDefault, pCapsFlags );
}
 
static HRESULT WINAPI
AMVideoProcAmp_Set( IAMVideoProcAmp * iface, LONG Property, LONG lValue,
                    LONG Flags )
{
    VfwCapture *This = impl_from_IAMVideoProcAmp(iface);
 
    return qcap_driver_set_prop(This->driver_info, Property, lValue, Flags);
}
 
static HRESULT WINAPI
AMVideoProcAmp_Get( IAMVideoProcAmp * iface, LONG Property, LONG *lValue,
                    LONG *Flags )
{
    VfwCapture *This = impl_from_IAMVideoProcAmp(iface);
 
    return qcap_driver_get_prop(This->driver_info, Property, lValue, Flags);
}
 
static const IAMVideoProcAmpVtbl IAMVideoProcAmp_VTable =
{
    AMVideoProcAmp_QueryInterface,
    AMVideoProcAmp_AddRef,
    AMVideoProcAmp_Release,
    AMVideoProcAmp_GetRange,
    AMVideoProcAmp_Set,
    AMVideoProcAmp_Get,
};
 
static HRESULT WINAPI PPB_QueryInterface(IPersistPropertyBag *iface, REFIID riid, void **ret_iface)
{
    VfwCapture *This = impl_from_IPersistPropertyBag(iface);
 
    return IUnknown_QueryInterface(This->outer_unk, riid, ret_iface);
}
 
static ULONG WINAPI PPB_AddRef(IPersistPropertyBag * iface)
{
    VfwCapture *This = impl_from_IPersistPropertyBag(iface);
 
    return IUnknown_AddRef(This->outer_unk);
}
 
static ULONG WINAPI PPB_Release(IPersistPropertyBag * iface)
{
    VfwCapture *This = impl_from_IPersistPropertyBag(iface);
 
    return IUnknown_Release(This->outer_unk);
}
 
static HRESULT WINAPI
PPB_GetClassID( IPersistPropertyBag * iface, CLSID * pClassID )
{
    VfwCapture *This = impl_from_IPersistPropertyBag(iface);
 
    FIXME("%p - stub\n", This);
 
    return E_NOTIMPL;
}
 
static HRESULT WINAPI PPB_InitNew(IPersistPropertyBag * iface)
{
    VfwCapture *This = impl_from_IPersistPropertyBag(iface);
 
    FIXME("%p - stub\n", This);
 
    return E_NOTIMPL;
}
 
static HRESULT WINAPI
PPB_Load( IPersistPropertyBag * iface, IPropertyBag *pPropBag,
          IErrorLog *pErrorLog )
{
    VfwCapture *This = impl_from_IPersistPropertyBag(iface);
    HRESULT hr;
    VARIANT var;
    const OLECHAR VFWIndex[] = {'V','F','W','I','n','d','e','x',0};
 
    TRACE("%p/%p-> (%p, %p)\n", iface, This, pPropBag, pErrorLog);
 
    V_VT(&var) = VT_I4;
    hr = IPropertyBag_Read(pPropBag, VFWIndex, &var, pErrorLog);
 
    if (SUCCEEDED(hr))
    {
        VfwPinImpl *pin;
 
        This->driver_info = qcap_driver_init( This->pOutputPin,
               var.__VARIANT_NAME_1.__VARIANT_NAME_2.__VARIANT_NAME_3.ulVal );
        if (This->driver_info)
        {
            pin = (VfwPinImpl *)This->pOutputPin;
            pin->parent = This;
            This->init = TRUE;
            hr = S_OK;
        }
        else
            hr = E_FAIL;
    }
 
    return hr;
}
 
static HRESULT WINAPI
PPB_Save( IPersistPropertyBag * iface, IPropertyBag *pPropBag,
          BOOL fClearDirty, BOOL fSaveAllProperties )
{
    VfwCapture *This = impl_from_IPersistPropertyBag(iface);
    FIXME("%p - stub\n", This);
    return E_NOTIMPL;
}
 
static const IPersistPropertyBagVtbl IPersistPropertyBag_VTable =
{
    PPB_QueryInterface,
    PPB_AddRef,
    PPB_Release,
    PPB_GetClassID,
    PPB_InitNew,
    PPB_Load,
    PPB_Save
};
 
/* IKsPropertySet interface */
static inline VfwPinImpl *impl_from_IKsPropertySet(IKsPropertySet *iface)
{
    return CONTAINING_RECORD(iface, VfwPinImpl, IKsPropertySet_iface);
}
 
static HRESULT WINAPI KSP_QueryInterface(IKsPropertySet * iface, REFIID riid, void **ret_iface)
{
    VfwPinImpl *This = impl_from_IKsPropertySet(iface);
 
    return IPin_QueryInterface(&This->pin.pin.IPin_iface, riid, ret_iface);
}
 
static ULONG WINAPI KSP_AddRef(IKsPropertySet * iface)
{
    VfwPinImpl *This = impl_from_IKsPropertySet(iface);
 
    return IPin_AddRef(&This->pin.pin.IPin_iface);
}
 
static ULONG WINAPI KSP_Release(IKsPropertySet * iface)
{
    VfwPinImpl *This = impl_from_IKsPropertySet(iface);
 
    return IPin_Release(&This->pin.pin.IPin_iface);
}
 
static HRESULT WINAPI
KSP_Set( IKsPropertySet * iface, REFGUID guidPropSet, DWORD dwPropID,
         LPVOID pInstanceData, DWORD cbInstanceData, LPVOID pPropData,
         DWORD cbPropData )
{
    FIXME("%p: stub\n", iface);
    return E_NOTIMPL;
}
 
static HRESULT WINAPI
KSP_Get( IKsPropertySet * iface, REFGUID guidPropSet, DWORD dwPropID,
         LPVOID pInstanceData, DWORD cbInstanceData, LPVOID pPropData,
         DWORD cbPropData, DWORD *pcbReturned )
{
    LPGUID pGuid;
 
    TRACE("()\n");
 
    if (!IsEqualIID(guidPropSet, &AMPROPSETID_Pin))
        return E_PROP_SET_UNSUPPORTED;
    if (pPropData == NULL && pcbReturned == NULL)
        return E_POINTER;
    if (pcbReturned)
        *pcbReturned = sizeof(GUID);
    if (pPropData == NULL)
        return S_OK;
    if (cbPropData < sizeof(GUID))
        return E_UNEXPECTED;
    pGuid = pPropData;
    *pGuid = PIN_CATEGORY_CAPTURE;
    FIXME("() Not adding a pin with PIN_CATEGORY_PREVIEW\n");
    return S_OK;
}
 
static HRESULT WINAPI
KSP_QuerySupported( IKsPropertySet * iface, REFGUID guidPropSet,
                    DWORD dwPropID, DWORD *pTypeSupport )
{
   FIXME("%p: stub\n", iface);
   return E_NOTIMPL;
}
 
static const IKsPropertySetVtbl IKsPropertySet_VTable =
{
   KSP_QueryInterface,
   KSP_AddRef,
   KSP_Release,
   KSP_Set,
   KSP_Get,
   KSP_QuerySupported
};
 
static inline VfwPinImpl *impl_from_BasePin(BasePin *pin)
{
    return CONTAINING_RECORD(pin, VfwPinImpl, pin.pin);
}
 
static HRESULT WINAPI VfwPin_GetMediaType(BasePin *pin, int iPosition, AM_MEDIA_TYPE *pmt)
{
    VfwPinImpl *This = impl_from_BasePin(pin);
    AM_MEDIA_TYPE *vfw_pmt;
    HRESULT hr;
 
    if (iPosition < 0)
        return E_INVALIDARG;
    if (iPosition > 0)
        return VFW_S_NO_MORE_ITEMS;
 
    hr = qcap_driver_get_format(This->parent->driver_info, &vfw_pmt);
    if (SUCCEEDED(hr)) {
        CopyMediaType(pmt, vfw_pmt);
        DeleteMediaType(vfw_pmt);
    }
    return hr;
}
 
static LONG WINAPI VfwPin_GetMediaTypeVersion(BasePin *iface)
{
    return 1;
}
 
static HRESULT WINAPI VfwPin_DecideBufferSize(BaseOutputPin *iface, IMemAllocator *pAlloc, ALLOCATOR_PROPERTIES *ppropInputRequest)
{
    ALLOCATOR_PROPERTIES actual;
 
    /* What we put here doesn't matter, the
       driver function should override it then commit */
    if (!ppropInputRequest->cBuffers)
        ppropInputRequest->cBuffers = 3;
    if (!ppropInputRequest->cbBuffer)
        ppropInputRequest->cbBuffer = 230400;
    if (!ppropInputRequest->cbAlign)
        ppropInputRequest->cbAlign = 1;
 
    return IMemAllocator_SetProperties(pAlloc, ppropInputRequest, &actual);
}
 
static const BaseOutputPinFuncTable output_BaseOutputFuncTable = {
    {
        NULL,
        BaseOutputPinImpl_AttemptConnection,
        VfwPin_GetMediaTypeVersion,
        VfwPin_GetMediaType
    },
    VfwPin_DecideBufferSize,
    BaseOutputPinImpl_DecideAllocator,
    BaseOutputPinImpl_BreakConnect
};
 
static HRESULT
VfwPin_Construct( IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec,
                  IPin ** ppPin )
{
    static const WCHAR wszOutputPinName[] = { 'O','u','t','p','u','t',0 };
    PIN_INFO piOutput;
    HRESULT hr;
 
    *ppPin = NULL;
 
    piOutput.dir = PINDIR_OUTPUT;
    piOutput.pFilter = pBaseFilter;
    lstrcpyW(piOutput.achName, wszOutputPinName);
 
    hr = BaseOutputPin_Construct(&VfwPin_Vtbl, sizeof(VfwPinImpl), &piOutput, &output_BaseOutputFuncTable, pCritSec, ppPin);
 
    if (SUCCEEDED(hr))
    {
        VfwPinImpl *pPinImpl = (VfwPinImpl*)*ppPin;
        pPinImpl->IKsPropertySet_iface.lpVtbl = &IKsPropertySet_VTable;
        ObjectRefCount(TRUE);
    }
 
    return hr;
}
 
static inline VfwPinImpl *impl_from_IPin(IPin *iface)
{
    return CONTAINING_RECORD(iface, VfwPinImpl, pin.pin.IPin_iface);
}
 
static HRESULT WINAPI VfwPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
{
    VfwPinImpl *This = impl_from_IPin(iface);
 
    TRACE("%s %p\n", debugstr_guid(riid), ppv);
 
    *ppv = NULL;
    if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IPin))
        *ppv = This;
    else if (IsEqualIID(riid, &IID_IKsPropertySet))
        *ppv = &This->IKsPropertySet_iface;
    else if (IsEqualIID(riid, &IID_IAMStreamConfig))
        return IUnknown_QueryInterface((IUnknown *)This->parent, riid, ppv);
 
    if (*ppv)
    {
        IUnknown_AddRef((IUnknown *)(*ppv));
        return S_OK;
    }
 
    FIXME("No interface for %s!\n", debugstr_guid(riid));
    return E_NOINTERFACE;
}
 
static ULONG WINAPI
VfwPin_Release(IPin * iface)
{
   VfwPinImpl *This = impl_from_IPin(iface);
   ULONG refCount = InterlockedDecrement(&This->pin.pin.refCount);
 
   TRACE("() -> new refcount: %u\n", refCount);
 
   if (!refCount)
   {
      BaseOutputPin_Destroy(&This->pin);
      ObjectRefCount(FALSE);
   }
   return refCount;
}
 
static HRESULT WINAPI
VfwPin_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum)
{
    VfwPinImpl *This = impl_from_IPin(iface);
    AM_MEDIA_TYPE *pmt;
    HRESULT hr;
 
    hr = qcap_driver_get_format(This->parent->driver_info, &pmt);
    if (SUCCEEDED(hr)) {
        hr = BasePinImpl_EnumMediaTypes(iface, ppEnum);
        DeleteMediaType(pmt);
    }
    TRACE("%p -- %x\n", This, hr);
    return hr;
}
 
static HRESULT WINAPI
VfwPin_QueryInternalConnections(IPin * iface, IPin ** apPin, ULONG * cPin)
{
    TRACE("(%p)->(%p, %p)\n", iface, apPin, cPin);
    return E_NOTIMPL;
}
 
static const IPinVtbl VfwPin_Vtbl =
{
    VfwPin_QueryInterface,
    BasePinImpl_AddRef,
    VfwPin_Release,
    BaseOutputPinImpl_Connect,
    BaseOutputPinImpl_ReceiveConnection,
    BaseOutputPinImpl_Disconnect,
    BasePinImpl_ConnectedTo,
    BasePinImpl_ConnectionMediaType,
    BasePinImpl_QueryPinInfo,
    BasePinImpl_QueryDirection,
    BasePinImpl_QueryId,
    BasePinImpl_QueryAccept,
    VfwPin_EnumMediaTypes,
    VfwPin_QueryInternalConnections,
    BaseOutputPinImpl_EndOfStream,
    BaseOutputPinImpl_BeginFlush,
    BaseOutputPinImpl_EndFlush,
    BasePinImpl_NewSegment
};