dlls/quartz/pin.h

/*
 * 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);

typedef struct IPinImpl
{
	const struct IPinVtbl * lpVtbl;
	ULONG refCount;
	LPCRITICAL_SECTION pCritSec;
	PIN_INFO pinInfo;
	IPin * pConnectedTo;
	AM_MEDIA_TYPE mtCurrent;
	ENUMMEDIADETAILS enumMediaDetails;
	QUERYACCEPTPROC pQueryAccept;
	LPVOID pUserData;
} IPinImpl;

typedef struct InputPin
{
	/* inheritance C style! */
	IPinImpl pin;

	const IMemInputPinVtbl * lpVtblMemInput;
	IMemAllocator * pAllocator;
	SAMPLEPROC pSampleProc;
	REFERENCE_TIME tStart;
	REFERENCE_TIME tStop;
	double dRate;
} InputPin;

typedef struct OutputPin
{
	/* inheritance C style! */
	IPinImpl pin;

	IMemInputPin * pMemInputPin;
	HRESULT (* pConnectSpecific)(IPin * iface, IPin * pReceiver, const AM_MEDIA_TYPE * pmt);
} OutputPin;

/*** Initializers ***/
HRESULT InputPin_Init(const PIN_INFO * pPinInfo, SAMPLEPROC pSampleProc, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, InputPin * pPinImpl);
HRESULT OutputPin_Init(const PIN_INFO * pPinInfo, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, OutputPin * pPinImpl);

/*** Constructors ***/
HRESULT InputPin_Construct(const PIN_INFO * pPinInfo, SAMPLEPROC pSampleProc, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, IPin ** ppPin);

/**************************/
/*** Pin Implementation ***/

/* Common */
ULONG   WINAPI IPinImpl_AddRef(IPin * iface);
HRESULT WINAPI IPinImpl_Disconnect(IPin * iface);
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);

/* Input Pin */
HRESULT WINAPI InputPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv);
ULONG   WINAPI InputPin_Release(IPin * iface);
HRESULT WINAPI InputPin_Connect(IPin * iface, IPin * pConnector, const AM_MEDIA_TYPE * pmt);
HRESULT WINAPI InputPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt);
HRESULT WINAPI InputPin_EndOfStream(IPin * iface);
HRESULT WINAPI InputPin_BeginFlush(IPin * iface);
HRESULT WINAPI InputPin_EndFlush(IPin * iface);
HRESULT WINAPI InputPin_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate);

/* Output Pin */
HRESULT WINAPI OutputPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv);
ULONG   WINAPI OutputPin_Release(IPin * iface);
HRESULT WINAPI OutputPin_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt);
HRESULT WINAPI OutputPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt);
HRESULT WINAPI OutputPin_EndOfStream(IPin * iface);
HRESULT WINAPI OutputPin_BeginFlush(IPin * iface);
HRESULT WINAPI OutputPin_EndFlush(IPin * iface);
HRESULT WINAPI OutputPin_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate);

/**********************************/
/*** MemInputPin Implementation ***/

HRESULT WINAPI MemInputPin_QueryInterface(IMemInputPin * iface, REFIID riid, LPVOID * ppv);
ULONG   WINAPI MemInputPin_AddRef(IMemInputPin * iface);
ULONG   WINAPI MemInputPin_Release(IMemInputPin * iface);
HRESULT WINAPI MemInputPin_GetAllocator(IMemInputPin * iface, IMemAllocator ** ppAllocator);
HRESULT WINAPI MemInputPin_NotifyAllocator(IMemInputPin * iface, IMemAllocator * pAllocator, BOOL bReadOnly);
HRESULT WINAPI MemInputPin_GetAllocatorRequirements(IMemInputPin * iface, ALLOCATOR_PROPERTIES * pProps);
HRESULT WINAPI MemInputPin_Receive(IMemInputPin * iface, IMediaSample * pSample);
HRESULT WINAPI MemInputPin_ReceiveMultiple(IMemInputPin * iface, IMediaSample ** pSamples, long nSamples, long *nSamplesProcessed);
HRESULT WINAPI MemInputPin_ReceiveCanBlock(IMemInputPin * iface);