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

//---------------------------------------------------------------------------
//
//  Module:   tn.cpp
//
//  Description:
//
//	Topology Node Class
//
//@@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"

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

NTSTATUS
CTopologyNode::Create(
    PTOPOLOGY_NODE *ppTopologyNode,
    PFILTER_NODE pFilterNode,
    ULONG ulNodeNumber,
    GUID *pguidType
)
{
    NTSTATUS Status = STATUS_SUCCESS;
    PTOPOLOGY_NODE pTopologyNode;

    pTopologyNode = new TOPOLOGY_NODE(pFilterNode, ulNodeNumber, pguidType);
    if(pTopologyNode == NULL) {
        Status = STATUS_INSUFFICIENT_RESOURCES;
        Trap();
        goto exit;
    }
    DPF2(70, "CTopologyNode::Create: %08x, FN: %08x",
      pTopologyNode,
      pFilterNode);
exit:
    *ppTopologyNode = pTopologyNode;
    return(Status);
}

CTopologyNode::CTopologyNode(
    PFILTER_NODE pFilterNode,
    ULONG ulNodeNumber,
    GUID *pguidType
)
{
    Assert(pFilterNode);
    this->pFilterNode = pFilterNode;
    this->ulRealNodeNumber = ulNodeNumber;
    this->ulSysaudioNodeNumber = MAXULONG;
    this->iVirtualSource = MAXULONG;
    this->pguidType = pguidType;
    AddList(&pFilterNode->lstTopologyNode);
    DPF2(70, "CTopologyNode: %08x, FN: %08x", this, pFilterNode);
}

CTopologyNode::~CTopologyNode(
)
{
    DPF1(70, "~CTopologyNode: %08x", this);
    Assert(this);
}

NTSTATUS
CreateTopology(
    PFILTER_NODE pFilterNode,
    PKSTOPOLOGY pTopology
)
{
    NTSTATUS Status = STATUS_SUCCESS;
    PTOPOLOGY_CONNECTION pTopologyConnection;
    PTOPOLOGY_NODE *papTopologyNode = NULL;
    PTOPOLOGY_NODE pTopologyNodeFrom;
    PTOPOLOGY_NODE pTopologyNodeTo;
    PTOPOLOGY_PIN pTopologyPinFrom;
    PTOPOLOGY_PIN pTopologyPinTo;
    PPIN_INFO pPinInfoFrom;
    PPIN_INFO pPinInfoTo;
    PPIN_INFO pPinInfo;
    ULONG ulTopologyPinNumberFrom;
    ULONG ulTopologyPinNumberTo;
    ULONG n, c;

    // If no topology, return error
    if(pTopology->TopologyNodesCount == 0) {
        if(pTopology->TopologyConnectionsCount == 0) {
            DPF2(5,
              "CreateTopology: FAILED, %s has no topology FN: %08x",
              pFilterNode->DumpName(),
              pFilterNode);
            Status = STATUS_INVALID_PARAMETER;
            goto exit;
        }
    }
    else {
        papTopologyNode = new PTOPOLOGY_NODE[pTopology->TopologyNodesCount];
        if(papTopologyNode == NULL) {
            Status = STATUS_INSUFFICIENT_RESOURCES;
            goto exit;
        }
        for(n = 0; n < pTopology->TopologyNodesCount; n++) {

            Status = CTopologyNode::Create(
              &papTopologyNode[n],
              pFilterNode,
              n,
              (GUID *)&pTopology->TopologyNodes[n]);

            if(!NT_SUCCESS(Status)) {
                Trap();
                goto exit;
            }
        }
    }

    for(c = 0; c < pTopology->TopologyConnectionsCount; c++) {

        pTopologyNodeFrom = pTopologyNodeTo = NULL;
        pTopologyPinFrom = pTopologyPinTo = NULL;
        pPinInfoFrom = pPinInfoTo = NULL;

        if(pTopology->TopologyConnections[c].FromNode != KSFILTER_NODE) {
            if(pTopology->TopologyConnections[c].FromNode >=
               pTopology->TopologyNodesCount) {
                DPF2(5,
                  "CreateTopology: FAILED, %s invalid 'from' node # %08x",
                  pFilterNode->DumpName(),
                  pTopology->TopologyConnections[c].FromNode);
                Trap();
                Status = STATUS_INVALID_PARAMETER;
                goto exit;
            }
            pTopologyNodeFrom =
              papTopologyNode[pTopology->TopologyConnections[c].FromNode];

            ulTopologyPinNumberFrom =
              pTopology->TopologyConnections[c].FromNodePin;
        }

        if(pTopology->TopologyConnections[c].ToNode != KSFILTER_NODE) {
            if(pTopology->TopologyConnections[c].ToNode >=
               pTopology->TopologyNodesCount) {
                DPF2(5,
                  "CreateTopology: FAILED, %s invalid 'to' node # %08x",
                  pFilterNode->DumpName(),
                      pTopology->TopologyConnections[c].ToNode);
                Trap();
                Status = STATUS_INVALID_PARAMETER;
                goto exit;
            }
            pTopologyNodeTo = 
              papTopologyNode[pTopology->TopologyConnections[c].ToNode];

            ulTopologyPinNumberTo =
              pTopology->TopologyConnections[c].ToNodePin;
        }

        if(pTopologyNodeFrom == NULL) {

            FOR_EACH_LIST_ITEM(&pFilterNode->lstPinInfo, pPinInfo) {

                if(pPinInfo->PinId == 
                  pTopology->TopologyConnections[c].FromNodePin) {
                    pPinInfoFrom = pPinInfo;
                    break;
                }

            } END_EACH_LIST_ITEM

            if(pPinInfoFrom == NULL) {
                DPF2(5,
                  "CreateTopology: FAILED, %s invalid 'from' node pin # %08x",
                      pFilterNode->DumpName(),
                  pTopology->TopologyConnections[c].FromNodePin);
                Trap();
                Status = STATUS_INVALID_PARAMETER;
                goto exit;
            }
        }
        else {
            Status = CTopologyPin::Create(
              &pTopologyPinFrom,
              ulTopologyPinNumberFrom,
              pTopologyNodeFrom);

            if(!NT_SUCCESS(Status)) {
                Trap();
                goto exit;
            }
        }

        if(pTopologyNodeTo == NULL) {

            FOR_EACH_LIST_ITEM(&pFilterNode->lstPinInfo, pPinInfo) {

                if(pPinInfo->PinId == 
                  pTopology->TopologyConnections[c].ToNodePin) {
                    pPinInfoTo = pPinInfo;
                    break;
                }

            } END_EACH_LIST_ITEM

            if(pPinInfoTo == NULL) {
                DPF2(5,
                  "CreateTopology: FAILED, %s invalid 'to' node pin # %08x",
                      pFilterNode->DumpName(),
                  pTopology->TopologyConnections[c].ToNodePin);
                Trap();
                Status = STATUS_INVALID_PARAMETER;
                goto exit;
            }
        }
        else {
            Status = CTopologyPin::Create(
              &pTopologyPinTo,
              ulTopologyPinNumberTo,
              pTopologyNodeTo);

            if(!NT_SUCCESS(Status)) {
                Trap();
                goto exit;
            }
        }
        Status = CTopologyConnection::Create(
          &pTopologyConnection,
          pFilterNode,
          NULL,
          pTopologyPinFrom,
          pTopologyPinTo,
          pPinInfoFrom,
          pPinInfoTo);

        if(!NT_SUCCESS(Status)) {
            Trap();
            goto exit;
        }
        ASSERT(IS_CONNECTION_TYPE(pTopologyConnection, FILTER));
    }
exit:
    delete [] papTopologyNode;
    return(Status);
}
//---------------------------------------------------------------------------