Sweden-Number/dlls/qcap/pin.h

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2005-05-18 17:34:04 +02:00
/*
* IPin function declarations to allow inheritance
*
* Copyright 2003 Robert Shearman
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* This function will process incoming samples to the pin.
* Any return value valid in IMemInputPin::Receive is allowed here
*/
typedef HRESULT (* SAMPLEPROC)(LPVOID userdata, IMediaSample * pSample);
/* This function will determine whether a type is supported or not.
* It is allowed to return any error value (within reason), as opposed
* to IPin::QueryAccept which is only allowed to return S_OK or S_FALSE.
*/
typedef HRESULT (* QUERYACCEPTPROC)(LPVOID userdata, const AM_MEDIA_TYPE * pmt);
/* This function is called prior to finalizing a connection with
* another pin and can be used to get things from the other pin
* like IMemInput interfaces.
*/
typedef HRESULT (* PRECONNECTPROC)(IPin * iface, IPin * pConnectPin);
typedef struct IPinImpl
{
const struct IPinVtbl * lpVtbl;
ULONG refCount;
LPCRITICAL_SECTION pCritSec;
PIN_INFO pinInfo;
IPin * pConnectedTo;
AM_MEDIA_TYPE mtCurrent;
ENUMMEDIADETAILS enumMediaDetails;
QUERYACCEPTPROC fnQueryAccept;
LPVOID pUserData;
} IPinImpl;
typedef struct OutputPin
{
/* inheritance C style! */
IPinImpl pin;
IMemInputPin * pMemInputPin;
HRESULT (* pConnectSpecific)(IPin * iface, IPin * pReceiver, const AM_MEDIA_TYPE * pmt);
ALLOCATOR_PROPERTIES allocProps;
} OutputPin;
/*** Initializers ***/
HRESULT OutputPin_Init(const PIN_INFO * pPinInfo, ALLOCATOR_PROPERTIES *props, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, OutputPin * pPinImpl);
/* Common */
HRESULT WINAPI IPinImpl_ConnectedTo(IPin * iface, IPin ** ppPin);
HRESULT WINAPI IPinImpl_ConnectionMediaType(IPin * iface, AM_MEDIA_TYPE * pmt);
HRESULT WINAPI IPinImpl_QueryPinInfo(IPin * iface, PIN_INFO * pInfo);
HRESULT WINAPI IPinImpl_QueryDirection(IPin * iface, PIN_DIRECTION * pPinDir);
HRESULT WINAPI IPinImpl_QueryId(IPin * iface, LPWSTR * Id);
HRESULT WINAPI IPinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt);
HRESULT WINAPI IPinImpl_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum);
HRESULT WINAPI IPinImpl_QueryInternalConnections(IPin * iface, IPin ** apPin, ULONG * cPin);
/* Output Pin */
HRESULT WINAPI OutputPin_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt);
HRESULT WINAPI OutputPin_Disconnect(IPin * iface);
HRESULT WINAPI OutputPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt);
HRESULT OutputPin_GetDeliveryBuffer(OutputPin * This, IMediaSample ** ppSample, const REFERENCE_TIME * tStart, const REFERENCE_TIME * tStop, DWORD dwFlags);
HRESULT OutputPin_SendSample(OutputPin * This, IMediaSample * pSample);