windows-server-2003/drivers/wdm/audio/sysaudio/pn.cpp

//---------------------------------------------------------------------------
//
//  Module:   pn.cpp
//
//  Description:
//
//
//@@BEGIN_MSINTERNAL
//  Development Team:
//     Mike McLaughlin
//
//  History:   Date	  Author      Comment
//
//  To Do:     Date	  Author      Comment
//
//@@END_MSINTERNAL
//
//  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) 1996-1999 Microsoft Corporation.  All Rights Reserved.
//
//---------------------------------------------------------------------------

#include "common.h"

//---------------------------------------------------------------------------
//---------------------------------------------------------------------------

CPinNode::CPinNode(
    PPIN_INFO pPinInfo
)
{
    Assert(pPinInfo);
    this->pPinInfo = pPinInfo;
    AddList(&pPinInfo->lstPinNode);
}

CPinNode::CPinNode(
    PGRAPH_NODE pGraphNode,
    PPIN_NODE pPinNode
)
{
    this->pPinInfo = pPinNode->pPinInfo;
    this->ulOverhead = pPinNode->GetOverhead();
    this->pDataRange = pPinNode->pDataRange;
    this->pInterface = pPinNode->pInterface;
    this->pMedium = pPinNode->pMedium;
    this->pLogicalFilterNode = pPinNode->pLogicalFilterNode;
    AddList(&pGraphNode->lstPinNode);
}

NTSTATUS
CPinNode::CreateAll(
    PPIN_INFO pPinInfo,
    PDATARANGES pDataRanges,
    PIDENTIFIERS pInterfaces,
    PIDENTIFIERS pMediums
)
{
    NTSTATUS Status = STATUS_SUCCESS;
    PKSDATARANGE pDataRange;
    PPIN_NODE pPinNode;
    ULONG d, i, m;

    Assert(pPinInfo);

    // Data Ranges loop
    pDataRange = &pDataRanges->aDataRanges[0];

    for(d = 0; d < pDataRanges->MultipleItem.Count; d++) {

        if(IsEqualGUID(
          &KSDATAFORMAT_SPECIFIER_WAVEFORMATEX,
          &pDataRange->Specifier) ||
           IsEqualGUID(
          &KSDATAFORMAT_SPECIFIER_DSOUND,
          &pDataRange->Specifier)) {
            //
            // Reject KSDATARANGE_AUDIO's that have the wrong size
            //
            if(pDataRange->FormatSize < sizeof(KSDATARANGE_AUDIO)) {
                DPF(5, "CPinNode::Create: KSDATARANGE_AUDIO wrong size");
                continue;
            }
        }

        // Interfaces loop
        for(i = 0; i < pInterfaces->MultipleItem.Count; i++) {

            // Mediums loop
            for(m = 0; m < pMediums->MultipleItem.Count; m++) {

                pPinNode = new PIN_NODE(pPinInfo);
                if(pPinNode == NULL) {
                    Status = STATUS_INSUFFICIENT_RESOURCES;
                    Trap();
                    goto exit;
                }
                if(pDataRanges != &DataRangesNull) {
                    pPinNode->pDataRange = pDataRange;
                    AssertAligned(pPinNode->pDataRange);
                } else Trap();
                if(pInterfaces != &IdentifiersNull) {
                    pPinNode->pInterface = &pInterfaces->aIdentifiers[i];
                    AssertAligned(pPinNode->pInterface);
                }
                if(pMediums != &IdentifiersNull) {
                    pPinNode->pMedium = &pMediums->aIdentifiers[m];
                    AssertAligned(pPinNode->pMedium);
                } else Trap();

                if(IsEqualGUID(
                  &KSDATAFORMAT_SPECIFIER_WAVEFORMATEX,
                  &pDataRange->Specifier) ||
                   IsEqualGUID(
                  &KSDATAFORMAT_SPECIFIER_DSOUND,
                  &pDataRange->Specifier)) {
                    //
                    // Puts in order based on SR, BPS and CHs, 
                    // scaled down to 0 - 256
                    //
                    pPinNode->ulOverhead = 256 -
                      (( (((PKSDATARANGE_AUDIO)pDataRange)->
                    MaximumChannels > 6 ? 6 :
                      ((PKSDATARANGE_AUDIO)pDataRange)->
                    MaximumChannels) *
                      ((PKSDATARANGE_AUDIO)pDataRange)->
                    MaximumSampleFrequency *
                      ((PKSDATARANGE_AUDIO)pDataRange)->
                    MaximumBitsPerSample) / ((96000 * 32 * 6)/256));
                    //
                    // Try the WaveFormatEx format first, then DSOUND
                    //
                    if(IsEqualGUID(
                      &KSDATAFORMAT_SPECIFIER_DSOUND,
                      &pDataRange->Specifier)) {
                        pPinNode->ulOverhead += 1;
                    }
                }
                else {
                    // Put in order that the filter had the data ranges
                    pPinNode->ulOverhead = d;
                }
                // Put in order that the filter had the interface/mediums
                pPinNode->ulOverhead += (m << 16) + (i << 8);
            }
        }
        // Get the pointer to the next data range
        *((PUCHAR*)&pDataRange) += ((pDataRange->FormatSize + 
          FILE_QUAD_ALIGNMENT) & ~FILE_QUAD_ALIGNMENT);
    }
exit:
    return(Status);
}

BOOL
CPinNode::ComparePins(
    PPIN_NODE pPinNode2
)
{
    PPIN_NODE pPinNode1 = this;

    // Check if dataflow is compatible
    switch(pPinNode1->pPinInfo->DataFlow) {

        case KSPIN_DATAFLOW_IN:
            switch(pPinNode2->pPinInfo->DataFlow) {
                case KSPIN_DATAFLOW_OUT:
                   break;

                default:
                    DPF(100, "ComparePins: dataflow mismatch");
                    return(FALSE);
            }
            break;

        case KSPIN_DATAFLOW_OUT:
            switch(pPinNode2->pPinInfo->DataFlow) {
                case KSPIN_DATAFLOW_IN:
                   break;

                default:
                    DPF(100, "ComparePins: dataflow mismatch");
                    return(FALSE);
            }
            break;

        default:
            Trap();
            DPF(100, "ComparePins: dataflow mismatch");
            return(FALSE);
    }

    // Check if communication type is compatible
    switch(pPinNode1->pPinInfo->Communication) {
        case KSPIN_COMMUNICATION_BOTH:
            switch(pPinNode2->pPinInfo->Communication) {
                case KSPIN_COMMUNICATION_BOTH:
                case KSPIN_COMMUNICATION_SINK:
                case KSPIN_COMMUNICATION_SOURCE:
                   break;

                default:
                    DPF(100, "ComparePins: comm mismatch");
                    return(FALSE);
            }
            break;

        case KSPIN_COMMUNICATION_SOURCE:
            switch(pPinNode2->pPinInfo->Communication) {
                case KSPIN_COMMUNICATION_BOTH:
                case KSPIN_COMMUNICATION_SINK:
                   break;

                default:
                    DPF(100, "ComparePins: comm mismatch");
                    return(FALSE);
            }
            break;

        case KSPIN_COMMUNICATION_SINK:
            switch(pPinNode2->pPinInfo->Communication) {
                case KSPIN_COMMUNICATION_BOTH:
                case KSPIN_COMMUNICATION_SOURCE:
                   break;

                default:
                    DPF(100, "ComparePins: comm mismatch");
                    return(FALSE);
            }
            break;

        default:
            DPF(100, "ComparePins: comm mismatch");
            return(FALSE);
    }

    // Check if interface is the same
    if(!CompareIdentifier(pPinNode1->pInterface, pPinNode2->pInterface)) {
        DPF(100, "ComparePins: interface mismatch");
        return(FALSE);
    }

    // Check if medium is the same
    if(!CompareIdentifier(pPinNode1->pMedium, pPinNode2->pMedium)) {
        Trap();
        DPF(100, "ComparePins: medium mismatch");
        return(FALSE);
    }

    // Check if data range is the same
    if(!CompareDataRange(pPinNode1->pDataRange, pPinNode2->pDataRange)) {
        DPF(100, "ComparePins: datarange mismatch");
        return(FALSE);
    }
    return(TRUE);
}

//---------------------------------------------------------------------------