多媒体编程

开发平台：
Visual C++

BaseMuxer.h：源码内容
							/* 
 *	Copyright (C) 2003-2005 Gabest
 *	http://www.gabest.org
 *
 *  This Program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *   
 *  This Program 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 General Public License for more details.
 *   
 *  You should have received a copy of the GNU General Public License
 *  along with GNU Make; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 
 *  http://www.gnu.org/copyleft/gpl.html
 *
 */
#pragma once
#include "BaseMuxerInputPin.h"
#include "BaseMuxerOutputPin.h"
#include "BitStream.h"
class CBaseMuxerFilter
	: public CBaseFilter
	, public CCritSec
	, public CAMThread
	, public IMediaSeeking
	, public IDSMPropertyBagImpl
	, public IDSMResourceBagImpl
	, public IDSMChapterBagImpl
{
private:
	CAutoPtrList<CBaseMuxerInputPin> m_pInputs;
	CAutoPtr<CBaseMuxerOutputPin> m_pOutput;
	enum {CMD_EXIT, CMD_RUN};
	DWORD ThreadProc();
	REFERENCE_TIME m_rtCurrent;
	CList<CBaseMuxerInputPin*> m_pActivePins;
	CAutoPtr<MuxerPacket> GetPacket();
protected:
	CList<CBaseMuxerInputPin*> m_pPins;
	virtual void MuxInit() = 0;
	// only called when the output pin is connected
	virtual void MuxHeader(IBitStream* pBS) {}
	virtual void MuxPacket(IBitStream* pBS, const MuxerPacket* pPacket) {}
	virtual void MuxFooter(IBitStream* pBS) {}
	// always called (useful if the derived class wants to write somewhere else than downstream)
	virtual void MuxHeader() {}
	virtual void MuxPacket(const MuxerPacket* pPacket) {}
	virtual void MuxFooter() {}
	virtual HRESULT CreateInput(CStringW name, CBaseMuxerInputPin** ppPin);
public:
	CBaseMuxerFilter(LPUNKNOWN pUnk, HRESULT* phr, const CLSID& clsid);
	virtual ~CBaseMuxerFilter();
	DECLARE_IUNKNOWN;
    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void** ppv);
	void AddInput();
	//void Receive(CAutoPtr<Packet> pPacket);
	int GetPinCount();
	CBasePin* GetPin(int n);
	STDMETHODIMP Stop();
	STDMETHODIMP Pause();
	STDMETHODIMP Run(REFERENCE_TIME tStart);
	// IMediaSeeking
	STDMETHODIMP GetCapabilities(DWORD* pCapabilities);
	STDMETHODIMP CheckCapabilities(DWORD* pCapabilities);
	STDMETHODIMP IsFormatSupported(const GUID* pFormat);
	STDMETHODIMP QueryPreferredFormat(GUID* pFormat);
	STDMETHODIMP GetTimeFormat(GUID* pFormat);
	STDMETHODIMP IsUsingTimeFormat(const GUID* pFormat);
	STDMETHODIMP SetTimeFormat(const GUID* pFormat);
	STDMETHODIMP GetDuration(LONGLONG* pDuration);
	STDMETHODIMP GetStopPosition(LONGLONG* pStop);
	STDMETHODIMP GetCurrentPosition(LONGLONG* pCurrent);
	STDMETHODIMP ConvertTimeFormat(LONGLONG* pTarget, const GUID* pTargetFormat, LONGLONG Source, const GUID* pSourceFormat);
	STDMETHODIMP SetPositions(LONGLONG* pCurrent, DWORD dwCurrentFlags, LONGLONG* pStop, DWORD dwStopFlags);
	STDMETHODIMP GetPositions(LONGLONG* pCurrent, LONGLONG* pStop);
	STDMETHODIMP GetAvailable(LONGLONG* pEarliest, LONGLONG* pLatest);
	STDMETHODIMP SetRate(double dRate);
	STDMETHODIMP GetRate(double* pdRate);
	STDMETHODIMP GetPreroll(LONGLONG* pllPreroll);
};

						