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148 lines
4.3 KiB
148 lines
4.3 KiB
//---------------------------------------------------------------------------
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//
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// Module: ci.cpp
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//
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// Description:
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//
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// Connect Info Class
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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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NTSTATUS
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CConnectInfo::Create(
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PCONNECT_NODE pConnectNode,
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PLOGICAL_FILTER_NODE pLogicalFilterNode,
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PCONNECT_INFO pConnectInfoNext,
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PGRAPH_PIN_INFO pGraphPinInfo,
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ULONG ulFlagsCurrent,
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PGRAPH_NODE pGraphNode
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)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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PCONNECT_INFO pConnectInfo;
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Assert(pGraphNode);
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Assert(pConnectNode);
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FOR_EACH_LIST_ITEM(&pGraphNode->lstConnectInfo, pConnectInfo) {
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if(pConnectInfo->pPinInfoSource ==
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pConnectNode->pPinNodeSource->pPinInfo &&
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pConnectInfo->pPinInfoSink ==
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pConnectNode->pPinNodeSink->pPinInfo) {
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if(pConnectInfo->pConnectInfoNext->IsSameGraph(pConnectInfoNext)) {
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pConnectInfo->AddRef();
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ASSERT(NT_SUCCESS(Status));
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goto exit;
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}
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}
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} END_EACH_LIST_ITEM
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pConnectInfo = new CONNECT_INFO(
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pConnectNode,
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pConnectInfoNext,
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pGraphPinInfo,
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pGraphNode);
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if(pConnectInfo == NULL) {
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto exit;
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}
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if(ulFlagsCurrent & LFN_FLAGS_CONNECT_NORMAL_TOPOLOGY) {
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BOOL fReserve = FALSE;
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if(pLogicalFilterNode->GetOrder() <= ORDER_MIXER) {
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pConnectInfo->ulFlags |= CI_FLAGS_LIMIT_FORMAT;
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}
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else {
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pConnectInfo->ulFlags |= CI_FLAGS_CONNECT_TOP_DOWN;
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}
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//
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// Reserve pins for the filters below the mixer or splitter (if one)
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//
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if(ulFlagsCurrent & LFN_FLAGS_CONNECT_CAPTURE) {
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if(pLogicalFilterNode->GetOrder() <= ORDER_SPLITTER) {
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pConnectInfo->ulFlags |= CI_FLAGS_REUSE_FILTER_INSTANCE;
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if(gcSplitters > 0) {
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fReserve = TRUE;
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}
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}
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}
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if(ulFlagsCurrent & LFN_FLAGS_CONNECT_RENDER) {
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if(pLogicalFilterNode->GetOrder() <= ORDER_MIXER) {
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pConnectInfo->ulFlags |= CI_FLAGS_REUSE_FILTER_INSTANCE;
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if(gcMixers > 0) {
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fReserve = TRUE;
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}
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}
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}
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if(fReserve) {
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Status = pConnectInfo->ReservePinInstance(pGraphNode);
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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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}
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DPF2(80, "CConnectInfo::Create %08x GN %08x", pConnectInfo, pGraphNode);
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exit:
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pConnectNode->pConnectInfo = pConnectInfo;
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return(Status);
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}
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CConnectInfo::CConnectInfo(
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PCONNECT_NODE pConnectNode,
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PCONNECT_INFO pConnectInfoNext,
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PGRAPH_PIN_INFO pGraphPinInfo,
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PGRAPH_NODE pGraphNode
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)
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{
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Assert(pGraphNode);
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Assert(pConnectNode);
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this->pPinInfoSource = pConnectNode->pPinNodeSource->pPinInfo;
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this->pPinInfoSink = pConnectNode->pPinNodeSink->pPinInfo;
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this->pGraphPinInfo = pGraphPinInfo;
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pGraphPinInfo->AddRef();
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this->pConnectInfoNext = pConnectInfoNext;
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pConnectInfoNext->AddRef();
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AddList(&pGraphNode->lstConnectInfo);
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AddRef();
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DPF2(80, "CConnectInfo: %08x GN %08x", this, pGraphNode);
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}
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CConnectInfo::~CConnectInfo(
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)
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{
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DPF1(80, "~CConnectInfo: %08x", this);
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Assert(this);
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RemoveList();
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pGraphPinInfo->Destroy();
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pConnectInfoNext->Destroy();
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}
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//---------------------------------------------------------------------------
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