420 lines
8.7 KiB
C++
420 lines
8.7 KiB
C++
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//---------------------------------------------------------------------------
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//
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// Module: pi.cpp
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//
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// Description:
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//
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//
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//@@BEGIN_MSINTERNAL
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// Development Team:
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// Mike McLaughlin
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//
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// History: Date Author Comment
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//
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// To Do: Date Author Comment
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//
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//@@END_MSINTERNAL
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//
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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
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// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
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// PURPOSE.
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//
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// Copyright (c) 1996-1999 Microsoft Corporation. All Rights Reserved.
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//
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//---------------------------------------------------------------------------
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#include "common.h"
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//---------------------------------------------------------------------------
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//---------------------------------------------------------------------------
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DATARANGES DataRangesNull = {
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{
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sizeof(KSMULTIPLE_ITEM) + sizeof(KSDATARANGE),
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1
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},
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{
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sizeof(KSDATARANGE),
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0,
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STATICGUIDOF(GUID_NULL),
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STATICGUIDOF(GUID_NULL),
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STATICGUIDOF(GUID_NULL),
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}
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};
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IDENTIFIERS IdentifiersNull = {
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{
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sizeof(KSMULTIPLE_ITEM) + sizeof(KSIDENTIFIER),
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1
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},
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{
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STATICGUIDOF(GUID_NULL),
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0,
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0
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}
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};
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//---------------------------------------------------------------------------
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//---------------------------------------------------------------------------
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CPinInfo::CPinInfo(
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PFILTER_NODE pFilterNode,
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ULONG PinId
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)
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{
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Assert(pFilterNode);
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this->pFilterNode = pFilterNode;
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this->PinId = PinId;
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AddList(&pFilterNode->lstPinInfo);
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}
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CPinInfo::~CPinInfo()
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{
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Assert(this);
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// Free physical connection data
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delete pPhysicalConnection;
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delete pwstrName;
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}
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ENUMFUNC
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CPinInfo::CreatePhysicalConnection(
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)
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{
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NTSTATUS Status;
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Assert(this);
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if(pPhysicalConnection != NULL) {
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PFILTER_NODE pFilterNodeConnect;
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PPIN_INFO pPinInfoConnect;
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ASSERT(pPhysicalConnection->Size != 0);
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Status = AddFilter(
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pPhysicalConnection->SymbolicLinkName,
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&pFilterNodeConnect);
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if(!NT_SUCCESS(Status)) {
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DPF1(10,
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"CreatePhysicalConnection: AddFilter FAILED: %08x", Status);
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goto exit;
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}
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Assert(pFilterNodeConnect);
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FOR_EACH_LIST_ITEM(&pFilterNodeConnect->lstPinInfo, pPinInfoConnect) {
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if(pPhysicalConnection->Pin == pPinInfoConnect->PinId) {
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DPF2(50, "CreatePhysicalConnection: From %d %s",
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PinId,
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pFilterNode->DumpName());
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DPF2(50, "CreatePhysicalConnection: To %d %s",
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pPinInfoConnect->PinId,
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pPinInfoConnect->pFilterNode->DumpName());
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if(DataFlow == KSPIN_DATAFLOW_OUT &&
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pPinInfoConnect->DataFlow == KSPIN_DATAFLOW_IN) {
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PTOPOLOGY_CONNECTION pTopologyConnection;
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Status = CreatePinInfoConnection(
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&pTopologyConnection,
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pFilterNode,
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NULL,
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this,
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pPinInfoConnect);
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if(!NT_SUCCESS(Status)) {
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Trap();
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goto exit;
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}
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}
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else {
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DPF(50, "CreatePhysicalConnection: rejected");
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}
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break;
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}
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} END_EACH_LIST_ITEM
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#ifndef DEBUG // Only free the name in retail; allows .s to display name
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delete pPhysicalConnection;
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pPhysicalConnection = NULL;
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#endif
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}
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Status = STATUS_CONTINUE;
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exit:
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return(Status);
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}
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NTSTATUS CPinInfo::GetPinInstances(
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PFILE_OBJECT pFileObject,
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PKSPIN_CINSTANCES pcInstances
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)
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{
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NTSTATUS Status;
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Status = GetPinProperty(
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pFileObject,
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KSPROPERTY_PIN_CINSTANCES,
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PinId,
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sizeof(KSPIN_CINSTANCES),
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(PVOID) pcInstances);
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return Status;
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} // GetPinInstances
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NTSTATUS
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CPinInfo::Create(
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PFILE_OBJECT pFileObject
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)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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PDATARANGES pDataRanges;
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PIDENTIFIERS pInterfaces;
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PIDENTIFIERS pMediums;
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Assert(this);
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Assert(pFilterNode);
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Status = GetPinInstances(pFileObject, &cPinInstances);
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if(!NT_SUCCESS(Status)) {
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Trap();
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goto exit;
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}
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Status = GetPinProperty(
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pFileObject,
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KSPROPERTY_PIN_DATAFLOW,
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PinId,
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sizeof(KSPIN_DATAFLOW),
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(PVOID)&DataFlow);
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if(!NT_SUCCESS(Status)) {
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Trap();
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goto exit;
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}
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Status = GetPinProperty(
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pFileObject,
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KSPROPERTY_PIN_COMMUNICATION,
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PinId,
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sizeof(KSPIN_COMMUNICATION),
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(PVOID)&Communication);
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if(!NT_SUCCESS(Status)) {
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Trap();
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goto exit;
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}
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pguidCategory = new GUID;
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if(pguidCategory == NULL) {
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Trap();
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto exit;
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}
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Status = GetPinProperty(
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pFileObject,
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KSPROPERTY_PIN_CATEGORY,
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PinId,
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sizeof(GUID),
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(PVOID)pguidCategory);
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if(NT_SUCCESS(Status)) {
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Status = pFilterNode->lstFreeMem.AddList(pguidCategory);
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if(!NT_SUCCESS(Status)) {
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Trap();
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delete pguidCategory;
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pguidCategory = NULL;
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goto exit;
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}
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}
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else {
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delete pguidCategory;
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pguidCategory = NULL;
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if(Status != STATUS_NOT_FOUND) {
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Trap();
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goto exit;
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}
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}
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Status = GetPinPropertyEx(
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pFileObject,
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KSPROPERTY_PIN_NAME,
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PinId,
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(PVOID*)&pwstrName);
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if(!NT_SUCCESS(Status) && Status != STATUS_OBJECT_NAME_NOT_FOUND) {
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Trap();
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goto exit;
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}
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Status = GetPinPropertyEx(
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pFileObject,
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KSPROPERTY_PIN_PHYSICALCONNECTION,
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PinId,
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(PVOID*)&pPhysicalConnection);
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if(!NT_SUCCESS(Status)) {
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Trap();
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goto exit;
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}
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Status = GetPinPropertyEx(
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pFileObject,
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KSPROPERTY_PIN_INTERFACES,
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PinId,
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(PVOID*)&pInterfaces);
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if(!NT_SUCCESS(Status)) {
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Trap();
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goto exit;
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}
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if(pInterfaces == NULL || pInterfaces->MultipleItem.Count == 0) {
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delete pInterfaces;
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pInterfaces = &IdentifiersNull;
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}
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else {
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Status = pFilterNode->lstFreeMem.AddList(pInterfaces);
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if(!NT_SUCCESS(Status)) {
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Trap();
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delete pInterfaces;
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goto exit;
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}
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}
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Status = GetPinPropertyEx(
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pFileObject,
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KSPROPERTY_PIN_MEDIUMS,
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PinId,
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(PVOID*)&pMediums);
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if(!NT_SUCCESS(Status)) {
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Trap();
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goto exit;
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}
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if(pMediums == NULL || pMediums->MultipleItem.Count == 0) {
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delete pMediums;
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pMediums = &IdentifiersNull;
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}
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else {
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Status = pFilterNode->lstFreeMem.AddList(pMediums);
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if(!NT_SUCCESS(Status)) {
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Trap();
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delete pMediums;
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goto exit;
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}
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}
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Status = GetPinPropertyEx(
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pFileObject,
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KSPROPERTY_PIN_DATARANGES,
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PinId,
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(PVOID*)&pDataRanges);
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if(!NT_SUCCESS(Status)) {
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Trap();
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goto exit;
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}
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if(pDataRanges == NULL || pDataRanges->MultipleItem.Count == 0) {
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Trap();
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delete pDataRanges;
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pDataRanges = &DataRangesNull;
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}
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else {
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Status = pFilterNode->lstFreeMem.AddList(pDataRanges);
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if(!NT_SUCCESS(Status)) {
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Trap();
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delete pDataRanges;
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goto exit;
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}
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}
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Status = CPinNode::CreateAll(
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this,
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pDataRanges,
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pInterfaces,
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pMediums);
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if(!NT_SUCCESS(Status)) {
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Trap();
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goto exit;
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}
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// ISSUE-2001/05/15-alpers
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// This is a temporary low risk solution to reverse DataRange problem.
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// This needs to be implemented properly in the future.
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//
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if (pFilterNode->GetType() & FILTER_TYPE_AEC) {
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DPF(10, "AEC Filter Pin : Reversing Data Ranges");
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lstPinNode.ReverseList();
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}
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if (pFilterNode->GetType() & FILTER_TYPE_GFX) {
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DPF(10, "GFX Filter Pin : Reversing Data Ranges");
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lstPinNode.ReverseList();
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}
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exit:
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return(Status);
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}
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#ifdef DEBUG
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PSZ apszDataFlow[] = { "??", "IN", "OUT" };
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PSZ apszCommunication[] = { "NONE", "SINK", "SOURCE", "BOTH", "BRIDGE" };
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ENUMFUNC
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CPinInfo::Dump(
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)
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{
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Assert(this);
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if(ulDebugFlags & (DEBUG_FLAGS_VERBOSE | DEBUG_FLAGS_OBJECT)) {
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dprintf("PI: %08x FN %08x PinId %d DataFlow %08x %s Comm %08x %s\n",
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this,
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pFilterNode,
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PinId,
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DataFlow,
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apszDataFlow[DataFlow],
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Communication,
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apszCommunication[Communication]);
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dprintf(" cPossible %d cCurrent %d %s\n",
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cPinInstances.PossibleCount,
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cPinInstances.CurrentCount,
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pFilterNode->DumpName());
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dprintf(" guidCategory: %s\n", DbgGuid2Sz(pguidCategory));
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dprintf(" guidName: %s\n", DbgGuid2Sz(pguidName));
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if(pwstrName != NULL) {
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dprintf(" pwstrName: %s\n", DbgUnicode2Sz(pwstrName));
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}
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if(pPhysicalConnection != NULL) {
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dprintf(" pPhysicalConnection: PinId %d\n %s\n",
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pPhysicalConnection->Pin,
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DbgUnicode2Sz(pPhysicalConnection->SymbolicLinkName));
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}
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dprintf(" lstTopologyConnection:");
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lstTopologyConnection.DumpAddress();
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dprintf("\n");
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if(ulDebugFlags & DEBUG_FLAGS_DETAILS) {
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dprintf(" lshPinNode:\n");
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lstPinNode.Dump();
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}
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}
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else {
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dprintf("PI: %08x FN %08x #%-2d %-3s %-6s\n",
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this,
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pFilterNode,
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PinId,
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apszDataFlow[DataFlow],
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apszCommunication[Communication]);
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}
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return(STATUS_CONTINUE);
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}
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#endif
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