103 lines
2.4 KiB
C++
103 lines
2.4 KiB
C++
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//---------------------------------------------------------------------------
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//
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// Module: vsl.cpp
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//
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// Description:
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//
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// Virtual Source Line 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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PLIST_VIRTUAL_SOURCE_LINE gplstVirtualSourceLine = NULL;
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ULONG gcVirtualSources = 0;
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//---------------------------------------------------------------------------
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//---------------------------------------------------------------------------
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#pragma INIT_CODE
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#pragma INIT_DATA
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NTSTATUS
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InitializeVirtualSourceLine(
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)
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{
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if(gplstVirtualSourceLine == NULL) {
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gplstVirtualSourceLine = new LIST_VIRTUAL_SOURCE_LINE;
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if(gplstVirtualSourceLine == NULL) {
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return(STATUS_INSUFFICIENT_RESOURCES);
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}
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}
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return(STATUS_SUCCESS);
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}
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#pragma PAGEABLE_CODE
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#pragma PAGEABLE_DATA
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VOID
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UninitializeVirtualSourceLine(
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)
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{
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delete gplstVirtualSourceLine;
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gplstVirtualSourceLine = NULL;
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}
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//---------------------------------------------------------------------------
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CVirtualSourceLine::CVirtualSourceLine(
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PSYSAUDIO_CREATE_VIRTUAL_SOURCE pCreateVirtualSource
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)
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{
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ASSERT(gplstVirtualSourceLine != NULL);
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//
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// NOTE: Virtual pins must end up first before the hardware's
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// pins so wdmaud mixer line parsing works correctly.
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//
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AddListEnd(gplstVirtualSourceLine);
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if(pCreateVirtualSource->Property.Id ==
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KSPROPERTY_SYSAUDIO_CREATE_VIRTUAL_SOURCE_ONLY) {
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ulFlags |= VSL_FLAGS_CREATE_ONLY;
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}
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RtlCopyMemory(
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&guidCategory,
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&pCreateVirtualSource->PinCategory,
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sizeof(GUID));
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RtlCopyMemory(
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&guidName,
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&pCreateVirtualSource->PinName,
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sizeof(GUID));
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iVirtualSource = gcVirtualSources++;
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}
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CVirtualSourceLine::~CVirtualSourceLine(
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)
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{
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RemoveList(gplstVirtualSourceLine);
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gcVirtualSources--;
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}
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