vpstrm.h

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#pragma once

//==========================================================================;
//
//  CWDMVideoPortStream - Video Port Stream class declarations
//
//      $Date:   22 Feb 1999 15:48:40  $
//  $Revision:   1.1  $
//    $Author:   KLEBANOV  $
//
// $Copyright:  (c) 1997 - 1999  ATI Technologies Inc.  All Rights Reserved.  $
//
//==========================================================================;

#include "i2script.h"
#include "aticonfg.h"


#include "VidStrm.h"



class CWDMVideoPortStream : public CWDMVideoStream
{
public:
    CWDMVideoPortStream(PHW_STREAM_OBJECT pStreamObject,
                        CWDMVideoDecoder * pCWDMVideoDecoder,
                        PUINT puiError);
    ~CWDMVideoPortStream    ();

    void * operator new(size_t size, void * pAllocation) { return(pAllocation);}
    void operator delete(void * pAllocation) {}

    VOID STREAMAPI VideoReceiveDataPacket(IN PHW_STREAM_REQUEST_BLOCK pSrb);

    VOID VideoSetState(PHW_STREAM_REQUEST_BLOCK, BOOL bVPConnected, BOOL bVPVBIConnected);
    VOID VideoGetProperty(PHW_STREAM_REQUEST_BLOCK);
    VOID VideoSetProperty(PHW_STREAM_REQUEST_BLOCK);
    VOID AttemptRenegotiation();

    VOID PreResChange();
    VOID PostResChange();
    VOID PreDosBox();
    VOID PostDosBox();

    VOID StreamEventProc (PHW_EVENT_DESCRIPTOR pEvent)
    {
        if (pEvent->Enable)
        {
            m_EventCount++;
        }
        else
        {
            m_EventCount--;
        }
    }

    void CancelPacket(PHW_STREAM_REQUEST_BLOCK pSrbToCancel)
    {
        DBGERROR(("CancelPacket(): came to VideoPort stream object\n"));
    }

private:

    VOID SetVideoPortProperty(PHW_STREAM_REQUEST_BLOCK);

    VOID SetVideoPortVBIProperty(PHW_STREAM_REQUEST_BLOCK);
    
    
    // internal flag to indicate whether or not we
    // have registered for DirectDraw events
    BOOL        m_Registered;

    UINT        m_EventCount;                                // for IVPNotify interface

};