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Handling KSPROPERTY_CAMERACONTROL_EXTENDED_PROFILE on avscamera DMFT #1325

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Handling KSPROPERTY_CAMERACONTROL_EXTENDED_PROFILE on avscamera DMFT #1325

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68cc5fa
Handling KsEvent, KSCAMERAPROFILE_FaceAuth_Mode for different streami…
Sep 24, 2025
bc6eda8
Remove Wil dependancy from AvsCameraDMFT.vcxproj to fix CI/CD issue.
Sep 24, 2025
93a1488
Eliminate WIL dependancy on AvsCameraDMFT.h/cpp.
Sep 25, 2025
4a380c3
Merge branch 'main' into user/chengfrank/DMFTFaceAuth
welljeng Sep 25, 2025
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202 changes: 188 additions & 14 deletions avstream/avscamera/DMFT/AvsCameraDMFT.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,14 @@
#ifdef MF_WPP
#include "AvsCameraDMFT.tmh" //--REF_ANALYZER_DONT_REMOVE--
#endif

// TODO: required to avoid bug OS bug 36971659 in extended property handling that introduces a 16 bytes cookie
typedef struct
{
//byte cookieBuffer[16];
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remove commented out code

KSCAMERA_EXTENDEDPROP_HEADER header;
} KSCAMERA_EXTENDEDPROP_HEADER_BUFFERED, * PKSCAMERA_EXTENDEDPROP_HEADER_BUFFERED;

//
// This DeviceMFT is a stripped down implementation of the device MFT Sample present in the sample Repo
// The original DMFT is present at https://github.com/microsoft/Windows-driver-samples/tree/main/avstream/sampledevicemft
Expand All @@ -18,8 +26,11 @@ CMultipinMft::CMultipinMft()
m_lWorkQueuePriority ( 0 ),
m_spAttributes( nullptr ),
m_spSourceTransform( nullptr ),
m_SymbolicLink(nullptr)

m_SymbolicLink(nullptr),
m_hSelectedProfileKSEvent { nullptr },
m_hSelectedProfileKSEventSentToDriver { nullptr},
m_isProfileDDISupportedInBaseDriver{},
m_selectedProfileId { KSCAMERAPROFILE_Legacy, 0, 0 }
{
HRESULT hr = S_OK;
ComPtr<IMFAttributes> pAttributes = nullptr;
Expand All @@ -29,6 +40,7 @@ CMultipinMft::CMultipinMft()
DMFTCHECKHR_GOTO(pAttributes->SetUINT32( MF_SA_D3D_AWARE, TRUE ), done);
DMFTCHECKHR_GOTO(pAttributes->SetString( MFT_ENUM_HARDWARE_URL_Attribute, L"SampleMultiPinMft" ),done);
m_spAttributes = pAttributes;

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NIT: remove

done:
DMFTRACE(DMFT_GENERAL, TRACE_LEVEL_INFORMATION, "%!FUNC! exiting %x = %!HRESULT!", hr, hr);
}
Expand Down Expand Up @@ -638,6 +650,10 @@ IFACEMETHODIMP CMultipinMft::ProcessInput(
goto done;
}

if (m_selectedProfileId.Type == KSCAMERAPROFILE_FaceAuth_Mode)
{
// DMFT might switch to different behavior when profile, KSCAMERAPROFILE_FaceAuth_Mode is selected.
}
DMFTCHECKHR_GOTO(spInPin->SendSample( pSample ), done );
done:
DMFTRACE( DMFT_GENERAL, TRACE_LEVEL_INFORMATION, "%!FUNC! exiting %x = %!HRESULT!", hr, hr );
Expand Down Expand Up @@ -990,13 +1006,23 @@ IFACEMETHODIMP CMultipinMft::KsProperty(
--*/
{
HRESULT hr = S_OK;

/// PDMFT only cares about ExtendedCameraControls, all others
/// are just blindly forwarded to the upstream DMFTs.
if (!IsEqualCLSID(pProperty->Set, KSPROPERTYSETID_ExtendedCameraControl))
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IsEqualCLSID

requires a lock

{
DMFTCHECKHR_GOTO(m_spIkscontrol->KsProperty(pProperty, ulPropertyLength, pvPropertyData,
ulDataLength, pulBytesReturned), done);
goto done;
}

DMFTCHECKHR_GOTO(m_spIkscontrol->KsProperty(pProperty,
ulPropertyLength,
pvPropertyData,
ulDataLength,
pulBytesReturned),done);
if (pProperty->Id == KSPROPERTY_CAMERACONTROL_EXTENDED_PROFILE)
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if (pProperty->Id == KSPROPERTY_CAMERACONTROL_EXTENDED_PROFILE)

This is incorrect. You're only checking against the Id. The combination should always be Set + Id to determine the control.

In this particular case, you're going to intercept any control whose Id is 34 regardless of whether that Id belongs to the KSPROPERTYSETID_ExtendedCameraControl or not. I think what you meant to do here is to intercept and call ProfilePropertyHandler only if the Set == KSPROPERTYSETID_ExtendedCameraControl && Id == KSPROPERTY_CAMERACONTROL_EXTENDED_PROFILE.

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Excellent poinnt!!

{
DMFTCHECKHR_GOTO(ProfilePropertyHandler(pProperty, ulPropertyLength, pvPropertyData, ulDataLength, pulBytesReturned), done);
goto done;
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NIT: only use goto for error case

}
done:
DMFTRACE(DMFT_GENERAL, TRACE_LEVEL_INFORMATION, "%!FUNC! exiting %x = %!HRESULT!", hr, hr);
return hr;
}

Expand Down Expand Up @@ -1041,14 +1067,66 @@ IFACEMETHODIMP CMultipinMft::KsEvent(
{

HRESULT hr = S_OK;
// Handle the events here if you want, This sample passes the events to the driver
DMFTCHECKHR_GOTO(m_spIkscontrol->KsEvent(pEvent,
ulEventLength,
pEventData,
ulDataLength,
pBytesReturned), done);
// handle the event if it is to set profile
if (pEvent != nullptr
&& ulEventLength >= sizeof(KSEVENT)
&& pEvent->Set == KSEVENTSETID_ExtendedCameraControl
&& pEventData != nullptr
&& ulDataLength >= sizeof(KSEVENTDATA)
&& (pEvent->Id == KSPROPERTY_CAMERACONTROL_EXTENDED_PROFILE))
{

m_hSelectedProfileKSEvent = nullptr;
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m_hSelectedProfileKSEvent

use WIL handle object looks like this code leaks handles

if (DuplicateHandle(
GetCurrentProcess(),
((KSEVENTDATA*)(pEventData))->EventHandle.Event,
GetCurrentProcess(),
&m_hSelectedProfileKSEvent,
0,
FALSE,
DUPLICATE_SAME_ACCESS) == false)
{
return E_INVALIDARG;
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return E_INVALIDARG;

match coding style of the rest of the code with macro checks

}
if (m_isProfileDDISupportedInBaseDriver.value_or(true))
{
m_hSelectedProfileKSEventSentToDriver = CreateEventExW(
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m_hSelectedProfileKSEventSentToDriver

use WIL event

nullptr,
nullptr,
0,
EVENT_ALL_ACCESS);

DMFTCHECKNULL_GOTO(m_hSelectedProfileKSEventSentToDriver, done, E_INVALIDARG);

KSEVENTDATA driverEventData = {};
driverEventData.NotificationType = KSEVENTF_EVENT_HANDLE;
driverEventData.EventHandle.Event = m_hSelectedProfileKSEventSentToDriver;
DMFTRACE(DMFT_GENERAL, TRACE_LEVEL_INFORMATION, "Handling profile set KsEvent, created profile KsEvent handle for driver: %p", m_hSelectedProfileKSEventSentToDriver);

// defer to source device
hr = m_spIkscontrol->KsEvent(pEvent, ulEventLength, (void*)(&driverEventData), ulDataLength, pBytesReturned);
if (FAILED(hr))
{
DMFTRACE(DMFT_GENERAL, TRACE_LEVEL_INFORMATION, "Failed to send profile KsEvent handle to driver: %p | hr=0x%08x", m_hSelectedProfileKSEventSentToDriver, hr);
m_hSelectedProfileKSEventSentToDriver = nullptr;
m_isProfileDDISupportedInBaseDriver = false;
}
}
}
else {
// Pass the events to the driver
hr = m_spIkscontrol->KsEvent(pEvent,
ulEventLength,
pEventData,
ulDataLength,
pBytesReturned);
if FAILED(hr)
{
return hr;
}
}
done:
return hr;
return S_OK;
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S_OK

return hr

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If source device return failed on the following, hr won't hold S_OK here. I would assume if source device returned failed, but the DMFT itself supports the KsEvent, it should reply OK.

https://github.com/welljeng/Windows-driver-samples/blob/4a380c3ff93f2227e40865cb472638954b3c31a1/avstream/avscamera/DMFT/AvsCameraDMFT.cpp#L1107

}

//
Expand Down Expand Up @@ -1293,6 +1371,102 @@ IFACEMETHODIMP CMultipinMft::Shutdown(
return ShutdownEventGenerator();
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Need to handle canceling event and outstanding controls in shutdown

}

/*++
Description:
Implements the KsProperty KSPROPERTY_CAMERACONTROL_EXTENDED_PROFILE handler.
--*/

HRESULT CMultipinMft::ProfilePropertyHandler(
_In_reads_bytes_(ulPropertyLength) PKSPROPERTY pProperty,
_In_ ULONG ulPropertyLength,
_In_ LPVOID pPropertyData,
_In_ ULONG ulDataLength,
_Inout_ PULONG pulBytesReturned)
{

UNREFERENCED_PARAMETER(ulPropertyLength);
HRESULT hr = S_OK;

if (pProperty->Flags & KSPROPERTY_TYPE_SET)
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check size

{
DMFTCHECKNULL_GOTO(pulBytesReturned, done, E_POINTER);
*pulBytesReturned = sizeof(KSCAMERA_EXTENDEDPROP_HEADER_BUFFERED) + sizeof(KSCAMERA_EXTENDEDPROP_PROFILE);
if (ulDataLength < *pulBytesReturned)
{
return HRESULT_FROM_WIN32(ERROR_MORE_DATA);
}
if (pPropertyData)
{

PBYTE pPayload = (PBYTE)pPropertyData;
PKSCAMERA_EXTENDEDPROP_HEADER pExtendedHeader = &((PKSCAMERA_EXTENDEDPROP_HEADER_BUFFERED)pPayload)->header;
KSCAMERA_EXTENDEDPROP_PROFILE* pProfile = (PKSCAMERA_EXTENDEDPROP_PROFILE)(pExtendedHeader + 1);

m_selectedProfileId.Type = pProfile->ProfileId;
m_selectedProfileId.Index = pProfile->Index;
m_selectedProfileId.Unused = pProfile->Reserved;
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This information is never forwarded to the driver so the SentToDriver event will never signal.


if (m_selectedProfileId.Type == GUID_NULL)
{
DMFTRACE(DMFT_GENERAL, TRACE_LEVEL_WARNING, "The caller incorrectly sets GUID_NULL, default back to legacy.");
m_selectedProfileId = { KSCAMERAPROFILE_Legacy, 0, 0 };
}

// signal we are done
if (m_hSelectedProfileKSEvent != nullptr)
{
if (m_hSelectedProfileKSEventSentToDriver != nullptr)
{
DMFTRACE(DMFT_GENERAL, TRACE_LEVEL_INFORMATION, "Waiting for driver profile KsEvent handle: %p", m_hSelectedProfileKSEventSentToDriver);
if ( WaitForSingleObjectEx(m_hSelectedProfileKSEventSentToDriver, kMAX_WAIT_TIME_DRIVER_PROFILE_KSEVENT, FALSE) != WAIT_OBJECT_0)
{

DMFTRACE(DMFT_GENERAL, TRACE_LEVEL_ERROR,
"Waiting for driver profile KsEvent handle: %p timed out after %i ms, failing",
m_hSelectedProfileKSEventSentToDriver,
kMAX_WAIT_TIME_DRIVER_PROFILE_KSEVENT);
SetEvent(m_hSelectedProfileKSEvent);
return HRESULT_FROM_WIN32(ERROR_TIMEOUT);
}
m_hSelectedProfileKSEventSentToDriver = nullptr;
}
SetEvent(m_hSelectedProfileKSEvent);
m_hSelectedProfileKSEvent = nullptr;
}
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Wait should not block

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Consider using MFPutWaitingWorkItem to signal the m_hSelectedProfileKSEvent (using m_hSelectedProfileKSEventSentToDriver as the event handle to the API in question). This doesn't afford you the ability to use a timeout, but the spec requires drivers to signal the event both in the case of success or if the operation can't complete.

}
}
else if (pProperty->Flags & KSPROPERTY_TYPE_GET)
{
DMFTCHECKNULL_GOTO(pulBytesReturned, done, E_POINTER);
*pulBytesReturned = sizeof(KSCAMERA_EXTENDEDPROP_HEADER_BUFFERED) + sizeof(KSCAMERA_EXTENDEDPROP_PROFILE);
if (ulDataLength < *pulBytesReturned)
{
return HRESULT_FROM_WIN32(ERROR_MORE_DATA);
}
if (pPropertyData)
{
if (!m_isProfileDDISupportedInBaseDriver.has_value())
{
hr = m_spIkscontrol->KsProperty(pProperty, ulPropertyLength, pPropertyData, ulDataLength, pulBytesReturned);
m_isProfileDDISupportedInBaseDriver = SUCCEEDED(hr);
DMFTRACE(DMFT_GENERAL, TRACE_LEVEL_INFORMATION, "Profile DDI GET support on base driver: %d, hr=0x%08x", m_isProfileDDISupportedInBaseDriver.value(), hr);
*pulBytesReturned = sizeof(KSCAMERA_EXTENDEDPROP_HEADER_BUFFERED) + sizeof(KSCAMERA_EXTENDEDPROP_PROFILE);
}
}
}
// --GETPAYLOAD--
else if (pProperty->Flags & KSPROPERTY_TYPE_GETPAYLOADSIZE)
{
DMFTCHECKNULL_GOTO(pulBytesReturned, done, E_POINTER);
*pulBytesReturned = sizeof(KSCAMERA_EXTENDEDPROP_HEADER_BUFFERED) + sizeof(PKSCAMERA_EXTENDEDPROP_PROFILE);
}

done:
DMFTRACE(DMFT_GENERAL, TRACE_LEVEL_INFORMATION, "%!FUNC! exiting %x = %!HRESULT!", hr, hr);
return hr;
}


//
// Static method to create an instance of the MFT.
//
Expand Down
18 changes: 18 additions & 0 deletions avstream/avscamera/DMFT/AvsCameraDMFT.h
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
#include "common.h"
#include "mftpeventgenerator.h"
#include "basepin.h"
#include <optional>

//
// The Below GUID is needed to transfer photoconfirmation sample successfully in the pipeline
Expand All @@ -19,6 +20,8 @@ DEFINE_GUID(MFSourceReader_SampleAttribute_MediaType_priv,

interface IDirect3DDeviceManager9;

constexpr int kMAX_WAIT_TIME_DRIVER_PROFILE_KSEVENT = 3000;// ms, amount of time to wait for the profile DDI KsEvent sent to the driver
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kMAX_WAIT_TIME_DRIVER_PROFILE_KSEVENT

I think pipeline should handle max wait


//
// Forward declarations
//
Expand Down Expand Up @@ -275,9 +278,18 @@ class CMultipinMft :
_In_opt_ IMFMediaType *pMediaType,
_In_ DeviceStreamState newState
);

HRESULT BridgeInputPinOutputPin(
_In_ CInPin* pInPin,
_In_ COutPin* pOutPin);

HRESULT ProfilePropertyHandler(
_In_reads_bytes_(ulPropertyLength) PKSPROPERTY pProperty,
_In_ ULONG ulPropertyLength,
_Inout_updates_to_(ulDataLength, *pulBytesReturned) LPVOID pPropertyData,
_In_ ULONG ulDataLength,
_Inout_ PULONG pulBytesReturned);

//
//Inline functions
//
Expand Down Expand Up @@ -320,8 +332,14 @@ class CMultipinMft :
UINT32 m_punValue;
ComPtr<IKsControl> m_spIkscontrol;
ComPtr<IMFAttributes> m_spAttributes;

map<int, int> m_outputPinMap; // How output pins are connected to input pins i-><0..outpins>
PWCHAR m_SymbolicLink;
HANDLE m_hSelectedProfileKSEvent;
HANDLE m_hSelectedProfileKSEventSentToDriver;
std::optional<bool> m_isProfileDDISupportedInBaseDriver;
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m_isProfileDDISupportedInBaseDriver

this should be a static property of the DMFT since it ideally is developed with the camera/driver it is being used with

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@welljeng welljeng Sep 26, 2025 •
edited
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I am hesitate of make it static since if the same DMFT is being applied on multiple camera DMFT chain, all the DMFT instances will share the same m_isProfileDDISupportedInBaseDriver value, which might not be the ideal case.
Correct me if I were wong.

image

SENSORPROFILEID m_selectedProfileId;

};


Expand Down
5 changes: 5 additions & 0 deletions avstream/avscamera/DMFT/AvsCameraDMFT.vcxproj
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Original file line number Diff line number Diff line change
Expand Up @@ -162,6 +162,7 @@
<ClCompile>
<PreprocessorDefinitions>%(PreprocessorDefinitions);UNICODE;MF_WPP;SECURITY_WIN32;MFT_UNIQUE_METHOD_NAMES;MF_DEVICEMFT_ALLOW_MFT0_LOAD</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(IntDir);%(AdditionalIncludeDirectories);..\..\common;..\common</AdditionalIncludeDirectories>
<LanguageStandard>stdcpp17</LanguageStandard>
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stdcpp17

I would recommend minimizing the $(Configuration)|$(Platform) unique configs move the common ones to a global setting

</ClCompile>
<Midl>
<PreprocessorDefinitions>%(PreprocessorDefinitions);UNICODE;MF_WPP;SECURITY_WIN32;MFT_UNIQUE_METHOD_NAMES;MF_DEVICEMFT_ALLOW_MFT0_LOAD</PreprocessorDefinitions>
Expand All @@ -178,6 +179,7 @@
<ClCompile>
<PreprocessorDefinitions>%(PreprocessorDefinitions);UNICODE;MF_WPP;SECURITY_WIN32;MFT_UNIQUE_METHOD_NAMES;MF_DEVICEMFT_ALLOW_MFT0_LOAD</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(IntDir);%(AdditionalIncludeDirectories);..\..\common;..\common</AdditionalIncludeDirectories>
<LanguageStandard>stdcpp17</LanguageStandard>
</ClCompile>
<Midl>
<PreprocessorDefinitions>%(PreprocessorDefinitions);UNICODE;MF_WPP;SECURITY_WIN32;MFT_UNIQUE_METHOD_NAMES;MF_DEVICEMFT_ALLOW_MFT0_LOAD</PreprocessorDefinitions>
Expand All @@ -194,6 +196,7 @@
<ClCompile>
<PreprocessorDefinitions>%(PreprocessorDefinitions);UNICODE;MF_WPP;SECURITY_WIN32;MFT_UNIQUE_METHOD_NAMES;MF_DEVICEMFT_ALLOW_MFT0_LOAD</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(IntDir);%(AdditionalIncludeDirectories);..\..\common;..\common</AdditionalIncludeDirectories>
<LanguageStandard>stdcpp17</LanguageStandard>
</ClCompile>
<Midl>
<PreprocessorDefinitions>%(PreprocessorDefinitions);UNICODE;MF_WPP;SECURITY_WIN32;MFT_UNIQUE_METHOD_NAMES;MF_DEVICEMFT_ALLOW_MFT0_LOAD</PreprocessorDefinitions>
Expand All @@ -210,6 +213,7 @@
<ClCompile>
<PreprocessorDefinitions>%(PreprocessorDefinitions);UNICODE;MF_WPP;SECURITY_WIN32;MFT_UNIQUE_METHOD_NAMES;MF_DEVICEMFT_ALLOW_MFT0_LOAD</PreprocessorDefinitions>
<AdditionalIncludeDirectories>$(IntDir);%(AdditionalIncludeDirectories);..\..\common;..\common</AdditionalIncludeDirectories>
<LanguageStandard>stdcpp17</LanguageStandard>
</ClCompile>
<Midl>
<PreprocessorDefinitions>%(PreprocessorDefinitions);UNICODE;MF_WPP;SECURITY_WIN32;MFT_UNIQUE_METHOD_NAMES;MF_DEVICEMFT_ALLOW_MFT0_LOAD</PreprocessorDefinitions>
Expand Down Expand Up @@ -237,6 +241,7 @@
<ItemGroup>
<None Exclude="@(None)" Include="*.txt;*.htm;*.html" />
<None Exclude="@(None)" Include="*.ico;*.cur;*.bmp;*.dlg;*.rct;*.gif;*.jpg;*.jpeg;*.wav;*.jpe;*.tiff;*.tif;*.png;*.rc2" />
<None Include="packages.config" />
<None Include="Source.def" />
</ItemGroup>
<ItemGroup>
Expand Down
3 changes: 3 additions & 0 deletions avstream/avscamera/DMFT/AvsCameraDMFT.vcxproj.Filters
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Original file line number Diff line number Diff line change
Expand Up @@ -54,4 +54,7 @@
<Filter>Header Files</Filter>
</ClInclude>
</ItemGroup>
<ItemGroup>
<None Include="packages.config" />
</ItemGroup>
</Project>
2 changes: 1 addition & 1 deletion avstream/avscamera/DMFT/packages.config
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="Microsoft.Windows.ImplementationLibrary" version="1.0.210204.1" targetFramework="native" />
<package id="Microsoft.Windows.ImplementationLibrary" version="1.0.250325.1" targetFramework="native" />
</packages>
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