windows-xp/Source/XPSP1/NT/drivers/wdm/audio/sysaudio/si.cpp

//---------------------------------------------------------------------------
//
//  Module:   si.cpp
//
//  Description:
//
//	Start Info 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
CStartInfo::Create(
    PSTART_NODE pStartNode,
    PCONNECT_INFO pConnectInfo,
    PGRAPH_PIN_INFO pGraphPinInfo,
    PGRAPH_NODE pGraphNode
)
{
    NTSTATUS Status = STATUS_SUCCESS;
    PSTART_INFO pStartInfo;

    Assert(pGraphNode);
    Assert(pStartNode);

    FOR_EACH_LIST_ITEM(&pGraphNode->lstStartInfo, pStartInfo) {

	if(pStartInfo->GetPinInfo() == pStartNode->pPinNode->pPinInfo &&
	   pStartInfo->pConnectInfoHead == pConnectInfo) {

	    ASSERT(pStartInfo->pConnectInfoHead->IsSameGraph(pConnectInfo));
	    pStartInfo->AddRef();
	    goto exit;
	}

    } END_EACH_LIST_ITEM

    pStartInfo = new START_INFO(
      pStartNode->pPinNode->pPinInfo,
      pConnectInfo,
      pGraphPinInfo,
      pGraphNode);

    if(pStartInfo == NULL) {
	Status = STATUS_INSUFFICIENT_RESOURCES;
	goto exit;
    }
    DPF2(80, "CStartInfo::Create %08x GN %08x", pStartInfo, pGraphNode);
exit:
    pStartNode->pStartInfo = pStartInfo;
    return(Status);
}

CStartInfo::CStartInfo(
    PPIN_INFO pPinInfo,
    PCONNECT_INFO pConnectInfo,
    PGRAPH_PIN_INFO pGraphPinInfo,
    PGRAPH_NODE pGraphNode
)
{
    Assert(pGraphPinInfo);
    Assert(pGraphNode);

    this->pPinInfo = pPinInfo;
    this->ulTopologyConnectionTableIndex = MAXULONG;
    this->ulVolumeNodeNumberPre = MAXULONG;
    this->ulVolumeNodeNumberSuperMix = MAXULONG;
    this->ulVolumeNodeNumberPost = MAXULONG;
    this->pGraphPinInfo = pGraphPinInfo;
    pGraphPinInfo->AddRef();
    this->pConnectInfoHead = pConnectInfo;
    pConnectInfo->AddRef();
    AddList(&pGraphNode->lstStartInfo);
    AddRef();
    DPF2(80, "CStartInfo: %08x GN %08x", this, pGraphNode);
}

CStartInfo::~CStartInfo(
)
{
    DPF1(80, "~CStartInfo: %08x", this);
    Assert(this);
    RemoveList();
    pGraphPinInfo->Destroy();
    pConnectInfoHead->Destroy();
}

ENUMFUNC
CStartInfo::CreatePinInfoConnection(
    PVOID pReference
)
{
    PGRAPH_NODE pGraphNode = PGRAPH_NODE(pReference);
    PTOPOLOGY_CONNECTION pTopologyConnection = NULL;
    PCONNECT_INFO pConnectInfo;
    NTSTATUS Status;

    Assert(this);
    Assert(pGraphNode);

    for(pConnectInfo = GetFirstConnectInfo();
	pConnectInfo != NULL;
	pConnectInfo = pConnectInfo->GetNextConnectInfo()) {

	Assert(pConnectInfo);
	Status = ::CreatePinInfoConnection(
	  &pTopologyConnection,
	  NULL,
	  pGraphNode,
	  pConnectInfo->pPinInfoSource,
	  pConnectInfo->pPinInfoSink);

	if(!NT_SUCCESS(Status)) {
	    Trap();
	    goto exit;
	}
    }
    Status = STATUS_CONTINUE;
exit:
    return(Status);
}

ENUMFUNC
FindVolumeNode(
    IN PTOPOLOGY_CONNECTION pTopologyConnection,
    IN BOOL fToDirection,
    IN PSTART_INFO pStartInfo
)
{
    PTOPOLOGY_PIN pTopologyPin;

    Assert(pTopologyConnection);

    // Need this check when called from EnumerateGraphTopology
    if(IS_CONNECTION_TYPE(pTopologyConnection, GRAPH)) {
	return(STATUS_DEAD_END);
    }

    if(fToDirection) {
       pTopologyPin = pTopologyConnection->pTopologyPinTo;
    }
    else {
       pTopologyPin = pTopologyConnection->pTopologyPinFrom;
    }

    if(pTopologyPin == NULL) {
	return(STATUS_CONTINUE);
    }

    if(IsEqualGUID(pTopologyPin->pTopologyNode->pguidType, &KSNODETYPE_SUM)) {
	return(STATUS_DEAD_END);
    }

    if(IsEqualGUID(pTopologyPin->pTopologyNode->pguidType, &KSNODETYPE_MUX)) {
	return(STATUS_DEAD_END);
    }

    if(IsEqualGUID(
      pTopologyPin->pTopologyNode->pguidType, 
      &KSNODETYPE_SUPERMIX)) {

	Assert(pStartInfo);
	pStartInfo->ulVolumeNodeNumberSuperMix =
	  pTopologyPin->pTopologyNode->ulSysaudioNodeNumber;

	DPF1(100, "FindVolumeNode: found supermix node: %02x",
	  pStartInfo->ulVolumeNodeNumberSuperMix);

	return(STATUS_CONTINUE);
    }

    if(IsEqualGUID(
      pTopologyPin->pTopologyNode->pguidType,
      &KSNODETYPE_VOLUME)) {

	Assert(pStartInfo);
	if(pStartInfo->ulVolumeNodeNumberSuperMix != MAXULONG) {

	    // Found a volume node after a super mix
	    pStartInfo->ulVolumeNodeNumberPost =
	      pTopologyPin->pTopologyNode->ulSysaudioNodeNumber;

	    DPF1(100, "FindVolumeNode: found post node: %02x",
	      pStartInfo->ulVolumeNodeNumberPost);

	    return(STATUS_SUCCESS);
	}

	if(pStartInfo->ulVolumeNodeNumberPre == MAXULONG) {

	    // Found first volume node
	    pStartInfo->ulVolumeNodeNumberPre =
	      pTopologyPin->pTopologyNode->ulSysaudioNodeNumber;

	    DPF1(100, "FindVolumeNode: found pre node: %02x",
	      pStartInfo->ulVolumeNodeNumberPre);
	}
    }
    return(STATUS_CONTINUE);
}

ENUMFUNC
CStartInfo::EnumStartInfo(
)
{
    Assert(this);

    DPF3(100, "EnumStartInfo: %08x %d %s", 
      this,
      GetPinInfo()->PinId,
      GetPinInfo()->pFilterNode->DumpName());

    EnumerateGraphTopology(
      this,
      (TOP_PFN)FindVolumeNode,
      this);

    return(STATUS_CONTINUE);
}

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

#ifdef DEBUG

ENUMFUNC 
CStartInfo::Dump(
)
{
    PCONNECT_INFO pConnectInfo;

    Assert(this);
    // .sgv or .so
    if(ulDebugFlags & (DEBUG_FLAGS_VERBOSE | DEBUG_FLAGS_OBJECT)) {
	dprintf("SI: %08x cRef %08x PI %08x #%d %s\n",
	  this,
	  cReference,
	  GetPinInfo(),
	  GetPinInfo()->PinId,
	  GetPinInfo()->pFilterNode->DumpName());

	dprintf("    ulTopConnecTableIndex: %08x ulVolumeNodeNumberPre  %08x\n",
	  ulTopologyConnectionTableIndex,
	  ulVolumeNodeNumberPre);

        dprintf("    ulVolumeNodeNumberSup: %08x ulVolumeNodeNumberPost %08x\n",
	  ulVolumeNodeNumberSuperMix,
	  ulVolumeNodeNumberPost);

	pGraphPinInfo->Dump();
    }
    // .sg
    else {
	dprintf("SI: %08x PI %08x P%-2d C%-1d #%d %s\n",
	  this,
	  GetPinInfo(),
	  GetPinInstances()->PossibleCount,
	  GetPinInstances()->CurrentCount,
	  GetPinInfo()->PinId,
	  GetPinInfo()->pFilterNode->DumpName());
    }
    if(ulDebugFlags & DEBUG_FLAGS_GRAPH) {
	for(pConnectInfo = GetFirstConnectInfo();
	    pConnectInfo != NULL;
	    pConnectInfo = pConnectInfo->GetNextConnectInfo()) {

	    pConnectInfo->Dump();
	}
    }
    return(STATUS_CONTINUE);
}

#endif