device.cpp

ATI显卡Windows驱动

                                     PLUGPLAY_REGKEY_DRIVER,
                                     STANDARD_RIGHTS_ALL,
                                     &handle);

    //
    // now get all of the registry settings for
    // initializing the decoder
    //

     if (NT_SUCCESS(Status)) {
        // =========================
        // Does NOT check that the registry settings "make sense";
        // e.g., that all three inputs aren't set to SVideo.


        // =========================
        // Do MUX0
        // =========================
        Status = GetRegistryValue(handle,
                                    MUX0String,
                                    sizeof(MUX0String),
                                    buf,
                                    sizeof(buf));

        if ((NT_SUCCESS(Status)) && (buf))
        {
            if (stringsEqual(buf, L"svideo"))
                {xbar->InputPins[0] = _XBAR_PIN_DESCRIPTION(KS_PhysConn_Video_SVideo,     -1, &CrossbarMediums[2]);}
            else if (stringsEqual(buf, L"tuner"))
                {xbar->InputPins[0] = _XBAR_PIN_DESCRIPTION(KS_PhysConn_Video_Tuner,      -1, &CrossbarMediums[1]);}
            else if (stringsEqual(buf, L"composite"))
                {xbar->InputPins[0] = _XBAR_PIN_DESCRIPTION(KS_PhysConn_Video_Composite,  -1, &CrossbarMediums[0]);}
            else if (stringsEqual(buf, L"none"))
            {
                TRAP(); 
            }
            else
            {
                TRAP();
            }
        }
        else
        {
            TRAP();
        }


        // =========================
        // Do MUX1
        // =========================
        Status = GetRegistryValue(handle,
                                    MUX1String,
                                    sizeof(MUX1String),
                                    buf,
                                    sizeof(buf));

        if ((NT_SUCCESS(Status)) && (buf))
        {
            if (stringsEqual(buf, L"svideo"))
                {xbar->InputPins[1] = _XBAR_PIN_DESCRIPTION(KS_PhysConn_Video_SVideo,     -1, &CrossbarMediums[2]);}
            else if (stringsEqual(buf, L"tuner"))
                {xbar->InputPins[1] = _XBAR_PIN_DESCRIPTION(KS_PhysConn_Video_Tuner,      -1, &CrossbarMediums[1]);}
            else if (stringsEqual(buf, L"composite"))
                {xbar->InputPins[1] = _XBAR_PIN_DESCRIPTION(KS_PhysConn_Video_Composite,  -1, &CrossbarMediums[0]);}
            else if (stringsEqual(buf, L"none"))
            {
                TRAP();
            }
            else
            {
                TRAP();
            }
        }
        else
        {
            TRAP();
        }


        // =========================
        // Do MUX2
        // =========================
        Status = GetRegistryValue(handle,
                                    MUX2String,
                                    sizeof(MUX2String),
                                    buf,
                                    sizeof(buf));

        if ((NT_SUCCESS(Status)) && (buf))
        {
            if (stringsEqual(buf, L"svideo"))
                {xbar->InputPins[2] = _XBAR_PIN_DESCRIPTION(KS_PhysConn_Video_SVideo,     -1, &CrossbarMediums[2]);}
            else if (stringsEqual(buf, L"tuner"))
                {xbar->InputPins[2] = _XBAR_PIN_DESCRIPTION(KS_PhysConn_Video_Tuner,      -1, &CrossbarMediums[1]);}
            else if (stringsEqual(buf, L"composite"))
                {xbar->InputPins[2] = _XBAR_PIN_DESCRIPTION(KS_PhysConn_Video_Composite,  -1, &CrossbarMediums[0]);}
            else if (stringsEqual(buf, L"none"))
            {
                TRAP();
            }
            else
            {
                TRAP();
            }
        }
        else
        {
            TRAP();
        }


		// =========================
        // 8 or 16 bit data width
        // =========================

		is16 = FALSE;


        // =========================
        // Control codes embedded in data stream?
        // =========================

		isCodeInDataStream = TRUE;


        //Paul:  If hardcoding, might as well leave this with the constructor
		//defaultDecoderWidth = 720;

        //
        // close the registry handle.
        //

        ZwClose(handle);

    }                           // status = success
}

BOOL Device::stringsEqual(PWCHAR pwc1, PWCHAR pwc2)
{
    UNICODE_STRING us1, us2;
    RtlInitUnicodeString(&us1, pwc1);
    RtlInitUnicodeString(&us2, pwc2);

    // case INsensitive
    return (RtlEqualUnicodeString(&us1, &us2, TRUE));
}
// ==========================================

ULONG Device::GetVideoPortProperty(PSTREAM_PROPERTY_DESCRIPTOR pSpd)
{
    ULONG Id  = pSpd->Property->Id;              // index of the property
    ULONG nS  = pSpd->PropertyOutputSize;        // size of data supplied
    ULONG standard = GetVideoDecoderStandard();

    ASSERT(nS >= sizeof(ULONG));

    ULONG ActualBytesTransferred;

    switch (Id)
    {
        case KSPROPERTY_VPCONFIG_NUMCONNECTINFO :
            // 2 VideoPort connections are possible
            *(PULONG)(pSpd->PropertyInfo) = BT829_VPCONNECTIONS_NUMBER;

            ActualBytesTransferred = sizeof(ULONG);
            break;

        case KSPROPERTY_VPCONFIG_GETCONNECTINFO :

            ASSERT(nS >= BT829_VPCONNECTIONS_NUMBER * sizeof(DDVIDEOPORTCONNECT));

            {
                LPDDVIDEOPORTCONNECT pConnectInfo;

                pConnectInfo = (LPDDVIDEOPORTCONNECT) pSpd->PropertyInfo;

                // fill in the DDVIDEOPORTCONNECT structure 1
                pConnectInfo->dwSize = sizeof(DDVIDEOPORTCONNECT);
                pConnectInfo->guidTypeID = DDVPTYPE_BROOKTREE;
                pConnectInfo->dwPortWidth = 8;
                pConnectInfo->dwFlags = DDVPCONNECT_INVERTPOLARITY;
                pConnectInfo->dwReserved1 = 0;

#if 0
                // fill in the DDVIDEOPORTCONNECT structure 2
                pConnectInfo ++;
                pConnectInfo->dwSize = sizeof(DDVIDEOPORTCONNECT);
                pConnectInfo->guidTypeID = DDVPTYPE_BROOKTREE;
                pConnectInfo->dwPortWidth = 16;
                pConnectInfo->dwFlags = DDVPCONNECT_INVERTPOLARITY;
                pConnectInfo->dwReserved1 = 0;
#endif
            }

            ActualBytesTransferred = BT829_VPCONNECTIONS_NUMBER * sizeof(DDVIDEOPORTCONNECT);
            break;

        case KSPROPERTY_VPCONFIG_NUMVIDEOFORMAT :
            // 2 output pixel formats are possible
            *(PULONG)(pSpd->PropertyInfo) = BT829_PIXELFORMATS_NUMBER;

            ActualBytesTransferred = sizeof(ULONG);
            break;

        case KSPROPERTY_VPCONFIG_GETVIDEOFORMAT :

            ASSERT(nS >= BT829_PIXELFORMATS_NUMBER * sizeof(DDPIXELFORMAT));

            {
                LPDDPIXELFORMAT pPixelFormat;

                pPixelFormat = (LPDDPIXELFORMAT) pSpd->PropertyInfo;

                // fill in the DDPIXELFORMAT structure
                pPixelFormat->dwSize = sizeof(DDPIXELFORMAT);
                pPixelFormat->dwFourCC = FOURCC_UYVY;
                pPixelFormat->dwYUVBitCount = 16;
                pPixelFormat->dwFlags = DDPF_FOURCC;
                pPixelFormat->dwYBitMask = (DWORD)0xFF00FF00;
                pPixelFormat->dwUBitMask = (DWORD)0x000000FF;
                pPixelFormat->dwVBitMask = (DWORD)0x00FF0000;
            }

            ActualBytesTransferred = BT829_PIXELFORMATS_NUMBER * sizeof(DDPIXELFORMAT);
            break;

        case KSPROPERTY_VPCONFIG_VPDATAINFO :

            ASSERT(nS >= sizeof(KS_AMVPDATAINFO));

            {
                PKS_AMVPDATAINFO pAMVPDataInfo;

                pAMVPDataInfo = (PKS_AMVPDATAINFO) pSpd->PropertyInfo;

				int decoderLostLines = (GetPartRev() >= 4) ?
					BT829A_LOST_LINES : BT829_LOST_LINES;

                // the values are sortof hardcoded for NTSC at this point
                // VBI values will need to be tweaked
                pAMVPDataInfo->dwSize = sizeof(KS_AMVPDATAINFO);

                if ( standard & ( KS_AnalogVideo_NTSC_Mask | KS_AnalogVideo_PAL_M ) )   // NTSC rectangle?
                    pAMVPDataInfo->dwMicrosecondsPerField = 16667;
                else
                    pAMVPDataInfo->dwMicrosecondsPerField = 20000;

                pAMVPDataInfo->bEnableDoubleClock = FALSE;
                pAMVPDataInfo->bEnableVACT = FALSE;

                pAMVPDataInfo->lHalfLinesOdd = 0;
                pAMVPDataInfo->lHalfLinesEven = 1;

                pAMVPDataInfo->bFieldPolarityInverted = FALSE;
                pAMVPDataInfo->bDataIsInterlaced = TRUE;
                pAMVPDataInfo->dwNumLinesInVREF = 6 - decoderLostLines;

                pAMVPDataInfo->amvpDimInfo.dwFieldWidth = GetDecoderWidth();
                
                // Beware of hard-coded numbers
                pAMVPDataInfo->amvpDimInfo.dwVBIWidth = VBISamples;

                if ( standard & ( KS_AnalogVideo_NTSC_Mask | KS_AnalogVideo_PAL_M ) )   // NTSC rectangle?
                {
                    pAMVPDataInfo->amvpDimInfo.dwVBIHeight = NTSCVBIEnd - decoderLostLines;
                    pAMVPDataInfo->amvpDimInfo.dwFieldHeight =
                        GetDecoderHeight() +
                        pAMVPDataInfo->amvpDimInfo.dwVBIHeight;
                    /*
                        (NTSCVBIEnd - 1) -  // the '- 1' makes VBIEnd zero-based
                        decoderLostLines -
                        pAMVPDataInfo->dwNumLinesInVREF;
                    */
                
                    pAMVPDataInfo->amvpDimInfo.rcValidRegion.top = NTSCVBIEnd - decoderLostLines;
                }
                else
                {
                    pAMVPDataInfo->amvpDimInfo.dwVBIHeight = PALVBIEnd - decoderLostLines;
                    pAMVPDataInfo->amvpDimInfo.dwFieldHeight =
                        GetDecoderHeight() +
                        pAMVPDataInfo->amvpDimInfo.dwVBIHeight;
                    /*
                        (PALVBIEnd - 1) -  // the '- 1' makes VBIEnd zero-based
                        decoderLostLines -
                        pAMVPDataInfo->dwNumLinesInVREF;
                    */
                
                    pAMVPDataInfo->amvpDimInfo.rcValidRegion.top = PALVBIEnd - decoderLostLines;
                }

                pAMVPDataInfo->amvpDimInfo.rcValidRegion.left = 0;
                pAMVPDataInfo->amvpDimInfo.rcValidRegion.right = pAMVPDataInfo->amvpDimInfo.dwFieldWidth;
                pAMVPDataInfo->amvpDimInfo.rcValidRegion.bottom = pAMVPDataInfo->amvpDimInfo.dwFieldHeight;

                pAMVPDataInfo->dwPictAspectRatioX = 4;
                pAMVPDataInfo->dwPictAspectRatioY = 3;
            }

            ActualBytesTransferred = sizeof(KS_AMVPDATAINFO);
            break;

        case KSPROPERTY_VPCONFIG_MAXPIXELRATE :
            ASSERT(nS >= sizeof(KSVPMAXPIXELRATE));

            {

                PKSVPMAXPIXELRATE pKSPixelRate;

                int decoderHeight = GetDecoderHeight();
                int decoderWidth = GetDecoderWidth();

                pKSPixelRate = (PKSVPMAXPIXELRATE) pSpd->PropertyInfo;

                pKSPixelRate->Size.dwWidth = decoderWidth;
                pKSPixelRate->Size.dwHeight = decoderHeight;
                if ( standard & ( KS_AnalogVideo_NTSC_Mask | KS_AnalogVideo_PAL_M ) )   // NTSC rectangle?
                    pKSPixelRate->MaxPixelsPerSecond = decoderWidth * decoderHeight * NTSC_FRAME_RATE;
                else
                    pKSPixelRate->MaxPixelsPerSecond = decoderWidth * decoderHeight * PAL_FRAME_RATE;
            }
            ActualBytesTransferred = sizeof(KSVPMAXPIXELRATE);
            break;

        case KSPROPERTY_VPCONFIG_INFORMVPINPUT :
            ActualBytesTransferred = 0;
			break;