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//==========================================================================;
//
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
// PURPOSE.
//
// Copyright (c) 1997-1998 Microsoft Corporation. All Rights Reserved.
//
//
// History:
// 20-Feb-98 TKB Initial Interface Version
//
//==========================================================================;
#ifndef __IGEMSTAR_H
#define __IGEMSTAR_H
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include <icodec.h>
#include <gemstar.h>
#pragma warning(disable:4355)
//////////////////////////////////////////////////////////////
// IGemstarOutputPin:: Closed Captioning Output Pin Interface
//////////////////////////////////////////////////////////////
class IGemstarOutputPin : public IVBIOutputPin { // Usable public interfaces
public: IGemstarOutputPin(IKSDriver &driver, int nPin, PKSDATARANGE pKSDataRange ) : IVBIOutputPin( driver, nPin, pKSDataRange, sizeof(VBICODECFILTERING_GEMSTAR_SUBSTREAMS) ), m_ScanlinesRequested(*this,KSPROPERTY_VBICODECFILTERING_SCANLINES_REQUESTED_BIT_ARRAY, sizeof(VBICODECFILTERING_SCANLINES)), m_ScanlinesDiscovered(*this,KSPROPERTY_VBICODECFILTERING_SCANLINES_DISCOVERED_BIT_ARRAY, sizeof(VBICODECFILTERING_SCANLINES)), m_SubstreamsRequested(*this,KSPROPERTY_VBICODECFILTERING_SUBSTREAMS_REQUESTED_BIT_ARRAY, sizeof(VBICODECFILTERING_GEMSTAR_SUBSTREAMS) ), m_SubstreamsDiscovered(*this,KSPROPERTY_VBICODECFILTERING_SUBSTREAMS_DISCOVERED_BIT_ARRAY, sizeof(VBICODECFILTERING_GEMSTAR_SUBSTREAMS) ), m_Statistics(*this,KSPROPERTY_VBICODECFILTERING_STATISTICS, sizeof(VBICODECFILTERING_STATISTICS_GEMSTAR_PIN)) {} ~IGemstarOutputPin();
// Pin specific properties (does not affect other pins)
IScanlinesProperty m_ScanlinesRequested; IScanlinesProperty m_ScanlinesDiscovered;
ISubstreamsProperty m_SubstreamsRequested; ISubstreamsProperty m_SubstreamsDiscovered;
IStatisticsProperty m_Statistics;
// Helper functions and internal data
protected: };
//////////////////////////////////////////////////////////////
// IGemstarDecode:: Closed Captioning Codec Interface
//////////////////////////////////////////////////////////////
class IGemstarDecode : public IVBICodec { // Usable public interfaces
public: IGemstarDecode(); ~IGemstarDecode();
// Call to make sure construction was successful
BOOL IsValid() { return IVBICodec::IsValid() && m_OutputPin.IsValid(); } // Typically line 21 for actual closed captioning data (default)
int AddRequestedScanline(int nScanline); // Adds _another_ scanline to the request list.
int ClearRequestedScanlines(); // Use this to reset requested scanlines to none.
int GetDiscoveredScanlines(VBICODECFILTERING_SCANLINES &ScanlineBitArray);
// One of KS_GEMSTAR_SUBSTREAM_ODD(default), KS_GEMSTAR_SUBSTREAM_EVEN
// Readible closed captioning data is usually on the ODD field.
int AddRequestedVideoField(int nField); // Adds _another_ field to the request list.
int ClearRequestedVideoFields(); // Use this to reset requested fields to none.
int GetDiscoveredVideoFields(VBICODECFILTERING_GEMSTAR_SUBSTREAMS &bitArray);
// Statistics Property Control
int GetCodecStatistics(VBICODECFILTERING_STATISTICS_GEMSTAR &CodecStatistics); int SetCodecStatistics(VBICODECFILTERING_STATISTICS_GEMSTAR &CodecStatistics); int GetPinStatistics(VBICODECFILTERING_STATISTICS_GEMSTAR_PIN &PinStatistics); int SetPinStatistics(VBICODECFILTERING_STATISTICS_GEMSTAR_PIN &PinStatistics);
// Read function (call "overlapped" at THREAD_PRIORITY_ABOVE_NORMAL to avoid data loss)
int ReadData( PGEMSTAR_BUFFER lpBuffer, int nBytes, DWORD *lpcbReturned, LPOVERLAPPED lpOS ) { return m_OutputPin.ReadData( (LPBYTE)lpBuffer, nBytes, lpcbReturned, lpOS ); } int GetOverlappedResult( LPOVERLAPPED lpOS, LPDWORD lpdwTransferred = NULL, BOOL bWait=TRUE ) { return m_OutputPin.GetOverlappedResult(lpOS, lpdwTransferred, bWait ); }
// Helper functions and internal data
// Actual Pin instance [w/properties] (set by above to control filtering & to get discovered)
IGemstarOutputPin m_OutputPin;
// Additional driver global properties
IStatisticsProperty m_Statistics;protected:
};
#pragma warning(default:4355)
#endif
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