BaseMuxer.h

/* 
 *      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);
};

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