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Virtual-Display-Driver/IddSampleDriver/Driver.cpp
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Bud 549d5950a9 Fixed error where variable wasnt defined outside the class to fix storage allocation for it 
defined in the global scope outside the class to properly allocate storage for variable
2024-04-24 01:15:28 +01:00

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/*++
Copyright (c) Microsoft Corporation
Abstract:
This module contains a sample implementation of an indirect display driver. See the included README.md file and the
various TODO blocks throughout this file and all accompanying files for information on building a production driver.
MSDN documentation on indirect displays can be found at https://msdn.microsoft.com/en-us/library/windows/hardware/mt761968(v=vs.85).aspx.
Environment:
User Mode, UMDF
--*/
#include "Driver.h"
//#include "Driver.tmh"
#include<fstream>
#include<sstream>
#include<string>
#include<tuple>
#include<vector>
// jocke added for comming dynamic edid loading
#include <iostream>
using namespace std;
using namespace Microsoft::IndirectDisp;
using namespace Microsoft::WRL;
extern "C" DRIVER_INITIALIZE DriverEntry;
EVT_WDF_DRIVER_DEVICE_ADD IddSampleDeviceAdd;
EVT_WDF_DEVICE_D0_ENTRY IddSampleDeviceD0Entry;
EVT_IDD_CX_ADAPTER_INIT_FINISHED IddSampleAdapterInitFinished;
EVT_IDD_CX_ADAPTER_COMMIT_MODES IddSampleAdapterCommitModes;
EVT_IDD_CX_PARSE_MONITOR_DESCRIPTION IddSampleParseMonitorDescription;
EVT_IDD_CX_MONITOR_GET_DEFAULT_DESCRIPTION_MODES IddSampleMonitorGetDefaultModes;
EVT_IDD_CX_MONITOR_QUERY_TARGET_MODES IddSampleMonitorQueryModes;
EVT_IDD_CX_MONITOR_ASSIGN_SWAPCHAIN IddSampleMonitorAssignSwapChain;
EVT_IDD_CX_MONITOR_UNASSIGN_SWAPCHAIN IddSampleMonitorUnassignSwapChain;
EVT_IDD_CX_ADAPTER_QUERY_TARGET_INFO IddSampleEvtIddCxAdapterQueryTargetInfo;
EVT_IDD_CX_MONITOR_SET_DEFAULT_HDR_METADATA IddSampleEvtIddCxMonitorSetDefaultHdrMetadata;
EVT_IDD_CX_PARSE_MONITOR_DESCRIPTION2 IddSampleEvtIddCxParseMonitorDescription2;
EVT_IDD_CX_MONITOR_QUERY_TARGET_MODES2 IddSampleEvtIddCxMonitorQueryTargetModes2;
EVT_IDD_CX_ADAPTER_COMMIT_MODES2 IddSampleEvtIddCxAdapterCommitModes2;
EVT_IDD_CX_MONITOR_SET_GAMMA_RAMP IddSampleEvtIddCxMonitorSetGammaRamp;
vector<tuple<int, int, int>> monitorModes;
vector< DISPLAYCONFIG_VIDEO_SIGNAL_INFO> s_KnownMonitorModes2;
UINT numVirtualDisplays;
std::vector<unsigned char>
Microsoft::IndirectDisp::IndirectDeviceContext::s_knownMonitorEdidData;
struct IndirectDeviceContextWrapper
{
IndirectDeviceContext* pContext;
void Cleanup()
{
delete pContext;
pContext = nullptr;
}
};
// This macro creates the methods for accessing an IndirectDeviceContextWrapper as a context for a WDF object
WDF_DECLARE_CONTEXT_TYPE(IndirectDeviceContextWrapper);
extern "C" BOOL WINAPI DllMain(
_In_ HINSTANCE hInstance,
_In_ UINT dwReason,
_In_opt_ LPVOID lpReserved)
{
UNREFERENCED_PARAMETER(hInstance);
UNREFERENCED_PARAMETER(lpReserved);
UNREFERENCED_PARAMETER(dwReason);
return TRUE;
}
_Use_decl_annotations_
extern "C" NTSTATUS DriverEntry(
PDRIVER_OBJECT pDriverObject,
PUNICODE_STRING pRegistryPath
)
{
WDF_DRIVER_CONFIG Config;
NTSTATUS Status;
WDF_OBJECT_ATTRIBUTES Attributes;
WDF_OBJECT_ATTRIBUTES_INIT(&Attributes);
WDF_DRIVER_CONFIG_INIT(&Config,
IddSampleDeviceAdd
);
Status = WdfDriverCreate(pDriverObject, pRegistryPath, &Attributes, &Config, WDF_NO_HANDLE);
if (!NT_SUCCESS(Status))
{
return Status;
}
return Status;
}
vector<string> split(string& input, char delimiter)
{
istringstream stream(input);
string field;
vector<string> result;
while (getline(stream, field, delimiter)) {
result.push_back(field);
}
return result;
}
void loadOptions(string filepath) {
ifstream ifs(filepath);
string line;
vector<tuple<int, int, int>> res;
getline(ifs, line);//num of displays
numVirtualDisplays = stoi(line);
while (getline(ifs, line)) {
vector<string> strvec = split(line, ',');
if (strvec.size() == 3 && strvec[0].substr(0, 1) != "#") {
res.push_back({ stoi(strvec[0]),stoi(strvec[1]),stoi(strvec[2]) });
}
}
monitorModes = res; return;
}
_Use_decl_annotations_
NTSTATUS IddSampleDeviceAdd(WDFDRIVER Driver, PWDFDEVICE_INIT pDeviceInit)
{
NTSTATUS Status = STATUS_SUCCESS;
WDF_PNPPOWER_EVENT_CALLBACKS PnpPowerCallbacks;
UNREFERENCED_PARAMETER(Driver);
// Register for power callbacks - in this sample only power-on is needed
WDF_PNPPOWER_EVENT_CALLBACKS_INIT(&PnpPowerCallbacks);
PnpPowerCallbacks.EvtDeviceD0Entry = IddSampleDeviceD0Entry;
WdfDeviceInitSetPnpPowerEventCallbacks(pDeviceInit, &PnpPowerCallbacks);
IDD_CX_CLIENT_CONFIG IddConfig;
IDD_CX_CLIENT_CONFIG_INIT(&IddConfig);
// If the driver wishes to handle custom IoDeviceControl requests, it's necessary to use this callback since IddCx
// redirects IoDeviceControl requests to an internal queue. This sample does not need this.
// IddConfig.EvtIddCxDeviceIoControl = IddSampleIoDeviceControl;
loadOptions("C:\\IddSampleDriver\\option.txt");
IddConfig.EvtIddCxAdapterInitFinished = IddSampleAdapterInitFinished;
IddConfig.EvtIddCxMonitorGetDefaultDescriptionModes = IddSampleMonitorGetDefaultModes;
IddConfig.EvtIddCxMonitorAssignSwapChain = IddSampleMonitorAssignSwapChain;
IddConfig.EvtIddCxMonitorUnassignSwapChain = IddSampleMonitorUnassignSwapChain;
if (IDD_IS_FIELD_AVAILABLE(IDD_CX_CLIENT_CONFIG, EvtIddCxAdapterQueryTargetInfo))
{
IddConfig.EvtIddCxAdapterQueryTargetInfo = IddSampleEvtIddCxAdapterQueryTargetInfo;
IddConfig.EvtIddCxMonitorSetDefaultHdrMetaData = IddSampleEvtIddCxMonitorSetDefaultHdrMetadata;
IddConfig.EvtIddCxParseMonitorDescription2 = IddSampleEvtIddCxParseMonitorDescription2;
IddConfig.EvtIddCxMonitorQueryTargetModes2 = IddSampleEvtIddCxMonitorQueryTargetModes2;
IddConfig.EvtIddCxAdapterCommitModes2 = IddSampleEvtIddCxAdapterCommitModes2;
IddConfig.EvtIddCxMonitorSetGammaRamp = IddSampleEvtIddCxMonitorSetGammaRamp;
}
else {
IddConfig.EvtIddCxParseMonitorDescription = IddSampleParseMonitorDescription;
IddConfig.EvtIddCxMonitorQueryTargetModes = IddSampleMonitorQueryModes;
IddConfig.EvtIddCxAdapterCommitModes = IddSampleAdapterCommitModes;
}
Status = IddCxDeviceInitConfig(pDeviceInit, &IddConfig);
if (!NT_SUCCESS(Status))
{
return Status;
}
WDF_OBJECT_ATTRIBUTES Attr;
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&Attr, IndirectDeviceContextWrapper);
Attr.EvtCleanupCallback = [](WDFOBJECT Object)
{
// Automatically cleanup the context when the WDF object is about to be deleted
auto* pContext = WdfObjectGet_IndirectDeviceContextWrapper(Object);
if (pContext)
{
pContext->Cleanup();
}
};
WDFDEVICE Device = nullptr;
Status = WdfDeviceCreate(&pDeviceInit, &Attr, &Device);
if (!NT_SUCCESS(Status))
{
return Status;
}
Status = IddCxDeviceInitialize(Device);
// Create a new device context object and attach it to the WDF device object
auto* pContext = WdfObjectGet_IndirectDeviceContextWrapper(Device);
pContext->pContext = new IndirectDeviceContext(Device);
return Status;
}
_Use_decl_annotations_
NTSTATUS IddSampleDeviceD0Entry(WDFDEVICE Device, WDF_POWER_DEVICE_STATE PreviousState)
{
UNREFERENCED_PARAMETER(PreviousState);
// This function is called by WDF to start the device in the fully-on power state.
auto* pContext = WdfObjectGet_IndirectDeviceContextWrapper(Device);
pContext->pContext->InitAdapter();
return STATUS_SUCCESS;
}
#pragma region Direct3DDevice
Direct3DDevice::Direct3DDevice(LUID AdapterLuid) : AdapterLuid(AdapterLuid)
{
}
Direct3DDevice::Direct3DDevice()
{
}
HRESULT Direct3DDevice::Init()
{
// The DXGI factory could be cached, but if a new render adapter appears on the system, a new factory needs to be
// created. If caching is desired, check DxgiFactory->IsCurrent() each time and recreate the factory if !IsCurrent.
HRESULT hr = CreateDXGIFactory2(0, IID_PPV_ARGS(&DxgiFactory));
if (FAILED(hr))
{
return hr;
}
// Find the specified render adapter
hr = DxgiFactory->EnumAdapterByLuid(AdapterLuid, IID_PPV_ARGS(&Adapter));
if (FAILED(hr))
{
return hr;
}
// Create a D3D device using the render adapter. BGRA support is required by the WHQL test suite.
hr = D3D11CreateDevice(Adapter.Get(), D3D_DRIVER_TYPE_UNKNOWN, nullptr, D3D11_CREATE_DEVICE_BGRA_SUPPORT, nullptr, 0, D3D11_SDK_VERSION, &Device, nullptr, &DeviceContext);
if (FAILED(hr))
{
// If creating the D3D device failed, it's possible the render GPU was lost (e.g. detachable GPU) or else the
// system is in a transient state.
return hr;
}
return S_OK;
}
#pragma endregion
#pragma region SwapChainProcessor
SwapChainProcessor::SwapChainProcessor(IDDCX_SWAPCHAIN hSwapChain, shared_ptr<Direct3DDevice> Device, HANDLE NewFrameEvent)
: m_hSwapChain(hSwapChain), m_Device(Device), m_hAvailableBufferEvent(NewFrameEvent)
{
m_hTerminateEvent.Attach(CreateEvent(nullptr, FALSE, FALSE, nullptr));
// Immediately create and run the swap-chain processing thread, passing 'this' as the thread parameter
m_hThread.Attach(CreateThread(nullptr, 0, RunThread, this, 0, nullptr));
}
SwapChainProcessor::~SwapChainProcessor()
{
// Alert the swap-chain processing thread to terminate
SetEvent(m_hTerminateEvent.Get());
if (m_hThread.Get())
{
// Wait for the thread to terminate
WaitForSingleObject(m_hThread.Get(), INFINITE);
}
}
DWORD CALLBACK SwapChainProcessor::RunThread(LPVOID Argument)
{
reinterpret_cast<SwapChainProcessor*>(Argument)->Run();
return 0;
}
void SwapChainProcessor::Run()
{
// For improved performance, make use of the Multimedia Class Scheduler Service, which will intelligently
// prioritize this thread for improved throughput in high CPU-load scenarios.
DWORD AvTask = 0;
HANDLE AvTaskHandle = AvSetMmThreadCharacteristicsW(L"Distribution", &AvTask);
RunCore();
// Always delete the swap-chain object when swap-chain processing loop terminates in order to kick the system to
// provide a new swap-chain if necessary.
WdfObjectDelete((WDFOBJECT)m_hSwapChain);
m_hSwapChain = nullptr;
AvRevertMmThreadCharacteristics(AvTaskHandle);
}
void SwapChainProcessor::RunCore()
{
// Get the DXGI device interface
ComPtr<IDXGIDevice> DxgiDevice;
HRESULT hr = m_Device->Device.As(&DxgiDevice);
if (FAILED(hr))
{
return;
}
IDARG_IN_SWAPCHAINSETDEVICE SetDevice = {};
SetDevice.pDevice = DxgiDevice.Get();
hr = IddCxSwapChainSetDevice(m_hSwapChain, &SetDevice);
if (FAILED(hr))
{
return;
}
// Acquire and release buffers in a loop
for (;;)
{
ComPtr<IDXGIResource> AcquiredBuffer;
// Ask for the next buffer from the producer
IDARG_IN_RELEASEANDACQUIREBUFFER2 BufferInArgs = {};
BufferInArgs.Size = sizeof(BufferInArgs);
IDXGIResource* pSurface;
if (IDD_IS_FUNCTION_AVAILABLE(IddCxSwapChainReleaseAndAcquireBuffer2)) {
IDARG_OUT_RELEASEANDACQUIREBUFFER2 Buffer = {};
hr = IddCxSwapChainReleaseAndAcquireBuffer2(m_hSwapChain, &BufferInArgs, &Buffer);
pSurface = Buffer.MetaData.pSurface;
}
else
{
IDARG_OUT_RELEASEANDACQUIREBUFFER Buffer = {};
hr = IddCxSwapChainReleaseAndAcquireBuffer(m_hSwapChain, &Buffer);
pSurface = Buffer.MetaData.pSurface;
}
// AcquireBuffer immediately returns STATUS_PENDING if no buffer is yet available
if (hr == E_PENDING)
{
// We must wait for a new buffer
HANDLE WaitHandles[] =
{
m_hAvailableBufferEvent,
m_hTerminateEvent.Get()
};
DWORD WaitResult = WaitForMultipleObjects(ARRAYSIZE(WaitHandles), WaitHandles, FALSE, 16);
if (WaitResult == WAIT_OBJECT_0 || WaitResult == WAIT_TIMEOUT)
{
// We have a new buffer, so try the AcquireBuffer again
continue;
}
else if (WaitResult == WAIT_OBJECT_0 + 1)
{
// We need to terminate
break;
}
else
{
// The wait was cancelled or something unexpected happened
hr = HRESULT_FROM_WIN32(WaitResult);
break;
}
}
else if (SUCCEEDED(hr))
{
AcquiredBuffer.Attach(pSurface);
// ==============================
// TODO: Process the frame here
//
// This is the most performance-critical section of code in an IddCx driver. It's important that whatever
// is done with the acquired surface be finished as quickly as possible. This operation could be:
// * a GPU copy to another buffer surface for later processing (such as a staging surface for mapping to CPU memory)
// * a GPU encode operation
// * a GPU VPBlt to another surface
// * a GPU custom compute shader encode operation
// ==============================
AcquiredBuffer.Reset();
hr = IddCxSwapChainFinishedProcessingFrame(m_hSwapChain);
if (FAILED(hr))
{
break;
}
// ==============================
// TODO: Report frame statistics once the asynchronous encode/send work is completed
//
// Drivers should report information about sub-frame timings, like encode time, send time, etc.
// ==============================
// IddCxSwapChainReportFrameStatistics(m_hSwapChain, ...);
}
else
{
// The swap-chain was likely abandoned (e.g. DXGI_ERROR_ACCESS_LOST), so exit the processing loop
break;
}
}
}
#pragma endregion
#pragma region IndirectDeviceContext
const UINT64 MHZ = 1000000;
const UINT64 KHZ = 1000;
constexpr DISPLAYCONFIG_VIDEO_SIGNAL_INFO dispinfo(UINT32 h, UINT32 v, UINT32 r) {
const UINT32 clock_rate = r * (v + 4) * (v + 4) + 1000;
return {
clock_rate, // pixel clock rate [Hz]
{ clock_rate, v + 4 }, // fractional horizontal refresh rate [Hz]
{ clock_rate, (v + 4) * (v + 4) }, // fractional vertical refresh rate [Hz]
{ h, v }, // (horizontal, vertical) active pixel resolution
{ h + 4, v + 4 }, // (horizontal, vertical) total pixel resolution
{ { 255, 0 }}, // video standard and vsync divider
DISPLAYCONFIG_SCANLINE_ORDERING_PROGRESSIVE
};
}
// Jocke, createing a 512 byte array filled with 0 values (largest edid bin without breaking standards)
static void edidLoad(const std::string& filename) {
std::ifstream file(filename, std::ios::binary);
if (file.is_open()) {
// Read file into vector
std::vector<BYTE> s_knownMonitorEdidData(std::istreambuf_iterator<char>(file), {});
// Modify bytes at positions 8, 9, 10, and 11
s_knownMonitorEdidData[8] = 0x36;
s_knownMonitorEdidData[9] = 0x94;
s_knownMonitorEdidData[10] = 0x37;
s_knownMonitorEdidData[11] = 0x13;
// Calculate checksum
int checksum = 0;
for (int i = 0; i < 128; ++i) {
checksum += s_knownMonitorEdidData[i];
}
checksum %= 256;
uint8_t bytesum = static_cast<BYTE>(checksum);
s_knownMonitorEdidData[127] = bytesum; // Store checksum as a byte, all byte number might be off by 1 (don't knwo how c++ handles array/vector position 0, if it's resereved or filed with data
}
else {
std::ifstream filedef("default.bin", std::ios::binary);
if (filedef.is_open()) {
// Read file into vector this is our pre patched default edid
std::vector<BYTE> s_knownMonitorEdidData(std::istreambuf_iterator<char>(filedef), {});
}
else { // if all fiels are gone from install folder then use our minimal hardcoded edid
string incode = " {\
0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x36,0x94,0x37,0x13,0x00,0x00,0x00,0x00,\
0x05,0x16,0x01,0x03,0x6D,0x32,0x1C,0x78,0xEA,0x5E,0xC0,0xA4,0x59,0x4A,0x98,0x25,\
0x20,0x50,0x54,0x00,0x00,0x00,0xD1,0xC0,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,\
0x01,0x01,0x01,0x01,0x01,0x01,0x02,0x3A,0x80,0x18,0x71,0x38,0x2D,0x40,0x58,0x2C,\
0x45,0x00,0xF4,0x19,0x11,0x00,0x00,0x1E,0x00,0x00,0x00,0xFF,0x00,0x4D,0x54,0x54,\
0x31,0x33,0x33,0x37,0x20,0x20,0x20,0x20,0x20,0x20,0x00,0x00,0x00,0xFD,0x00,0x3B,\
0x3D,0x42,0x44,0x0F,0x00,0x0A,0x20,0x20,0x20,0x20,0x20,0x20,0x00,0x00,0x00,0xFC,\
0x00,0x4D,0x54,0x54,0x31,0x33,0x33,0x37,0x0A,0x20,0x20,0x20,0x20,0x20,0x00,0x83}";
std::vector<BYTE> s_knownMonitorEdidData(incode.begin(), incode.end());
}
}
};
// This is a sample monitor EDID - FOR SAMPLE PURPOSES ONLY
/*
const BYTE IndirectDeviceContext::s_KnownMonitorEdid[] = {
0x00,0xff,0xff,0xff,0xff,0xff,0xff,0x00,0x36,0x94,0x37,0x13,0x37,0x13,0x37,0x13,
0x0d,0x22,0x01,0x03,0x80,0x32,0x1f,0x78,0x07,0xee,0x95,0xa3,0x54,0x4c,0x99,0x26,
0x0f,0x50,0x54,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,
0x01,0x01,0x01,0x01,0x01,0x01,0x02,0x3a,0x80,0x18,0x71,0x38,0x2d,0x40,0x58,0x2c,
0x45,0x00,0x63,0xc8,0x10,0x00,0x00,0x06,0x00,0x00,0x00,0xfd,0x00,0x17,0xf0,0x0f,
0xff,0x37,0x00,0x0a,0x20,0x20,0x20,0x20,0x20,0x20,0x00,0x00,0x00,0xfc,0x00,0x4d,
0x54,0x54,0x31,0x33,0x33,0x37,0x0a,0x20,0x20,0x20,0x20,0x20,0x00,0x00,0x00,0x10,
0x00,0x13,0x37,0x13,0x37,0x13,0x37,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x02,0x33,
0x02,0x03,0x23,0x40,0x23,0x09,0x00,0x00,0xe6,0x06,0x0d,0x01,0xb4,0x78,0x01,0x67,
0x03,0x0c,0x00,0x00,0x00,0x10,0x6e,0xe3,0x05,0x80,0x00,0x67,0xd8,0x5d,0xc4,0x01,
0x6e,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x9a,
0x70,0x13,0x79,0x00,0x00,0x00,0x00,0x1e,0x4d,0x54,0x54,0x0d,0x00,0x39,0x05,0x00,
0x00,0x0e,0x18,0x12,0x56,0x44,0x44,0x20,0x62,0x79,0x20,0x4d,0x69,0x6b,0x65,0x54,
0x68,0x65,0x54,0x65,0x63,0x68,0x03,0x01,0x14,0x72,0xd6,0x00,0x84,0xff,0x1d,0x9f,
0x00,0x2f,0x80,0x1f,0x00,0xdf,0x10,0x18,0x02,0x02,0x00,0x04,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3e,0x90
};
*/
IndirectDeviceContext::IndirectDeviceContext(_In_ WDFDEVICE WdfDevice) :
m_WdfDevice(WdfDevice)
{
m_Adapter = {};
}
IndirectDeviceContext::~IndirectDeviceContext()
{
m_ProcessingThread.reset();
}
#define NUM_VIRTUAL_DISPLAYS 1
void IndirectDeviceContext::InitAdapter()
{
// ==============================
// TODO: Update the below diagnostic information in accordance with the target hardware. The strings and version
// numbers are used for telemetry and may be displayed to the user in some situations.
//
// This is also where static per-adapter capabilities are determined.
// ==============================
IDDCX_ADAPTER_CAPS AdapterCaps = {};
AdapterCaps.Size = sizeof(AdapterCaps);
if (IDD_IS_FUNCTION_AVAILABLE(IddCxSwapChainReleaseAndAcquireBuffer2)) {
AdapterCaps.Flags = IDDCX_ADAPTER_FLAGS_CAN_PROCESS_FP16;
}
// Declare basic feature support for the adapter (required)
AdapterCaps.MaxMonitorsSupported = numVirtualDisplays;
AdapterCaps.EndPointDiagnostics.Size = sizeof(AdapterCaps.EndPointDiagnostics);
AdapterCaps.EndPointDiagnostics.GammaSupport = IDDCX_FEATURE_IMPLEMENTATION_NONE;
AdapterCaps.EndPointDiagnostics.TransmissionType = IDDCX_TRANSMISSION_TYPE_WIRED_OTHER;
// Declare your device strings for telemetry (required)
AdapterCaps.EndPointDiagnostics.pEndPointFriendlyName = L"IddSample Device";
AdapterCaps.EndPointDiagnostics.pEndPointManufacturerName = L"Microsoft";
AdapterCaps.EndPointDiagnostics.pEndPointModelName = L"IddSample Model";
// Declare your hardware and firmware versions (required)
IDDCX_ENDPOINT_VERSION Version = {};
Version.Size = sizeof(Version);
Version.MajorVer = 1;
AdapterCaps.EndPointDiagnostics.pFirmwareVersion = &Version;
AdapterCaps.EndPointDiagnostics.pHardwareVersion = &Version;
// Initialize a WDF context that can store a pointer to the device context object
WDF_OBJECT_ATTRIBUTES Attr;
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&Attr, IndirectDeviceContextWrapper);
IDARG_IN_ADAPTER_INIT AdapterInit = {};
AdapterInit.WdfDevice = m_WdfDevice;
AdapterInit.pCaps = &AdapterCaps;
AdapterInit.ObjectAttributes = &Attr;
// Start the initialization of the adapter, which will trigger the AdapterFinishInit callback later
IDARG_OUT_ADAPTER_INIT AdapterInitOut;
NTSTATUS Status = IddCxAdapterInitAsync(&AdapterInit, &AdapterInitOut);
if (NT_SUCCESS(Status))
{
// Store a reference to the WDF adapter handle
m_Adapter = AdapterInitOut.AdapterObject;
// Store the device context object into the WDF object context
auto* pContext = WdfObjectGet_IndirectDeviceContextWrapper(AdapterInitOut.AdapterObject);
pContext->pContext = this;
}
}
void IndirectDeviceContext::FinishInit()
{
for (unsigned int i = 0; i < numVirtualDisplays; i++) {
CreateMonitor(i);
}
}
void IndirectDeviceContext::CreateMonitor(unsigned int index) {
// ==============================
// TODO: In a real driver, the EDID should be retrieved dynamically from a connected physical monitor. The EDID
// provided here is purely for demonstration, as it describes only 640x480 @ 60 Hz and 800x600 @ 60 Hz. Monitor
// manufacturers are required to correctly fill in physical monitor attributes in order to allow the OS to optimize
// settings like viewing distance and scale factor. Manufacturers should also use a unique serial number every
// single device to ensure the OS can tell the monitors apart.
// ==============================
WDF_OBJECT_ATTRIBUTES Attr;
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&Attr, IndirectDeviceContextWrapper);
IDDCX_MONITOR_INFO MonitorInfo = {}; // Jocke, guessing that IDDCX_MONITOR_INFO is a class, and that there we could find out if it's possible to fill s_KnownMonitorEid with a ector instead of hardcode
MonitorInfo.Size = sizeof(MonitorInfo);
MonitorInfo.MonitorType = DISPLAYCONFIG_OUTPUT_TECHNOLOGY_HDMI;
MonitorInfo.ConnectorIndex = index;
MonitorInfo.MonitorDescription.Size = sizeof(MonitorInfo.MonitorDescription);
MonitorInfo.MonitorDescription.Type = IDDCX_MONITOR_DESCRIPTION_TYPE_EDID;
MonitorInfo.MonitorDescription.DataSize = sizeof(s_knownMonitorEdidData);
MonitorInfo.MonitorDescription.pData = s_knownMonitorEdidData.data();
// ==============================
// TODO: The monitor's container ID should be distinct from "this" device's container ID if the monitor is not
// permanently attached to the display adapter device object. The container ID is typically made unique for each
// monitor and can be used to associate the monitor with other devices, like audio or input devices. In this
// sample we generate a random container ID GUID, but it's best practice to choose a stable container ID for a
// unique monitor or to use "this" device's container ID for a permanent/integrated monitor.
// ==============================
// Create a container ID
CoCreateGuid(&MonitorInfo.MonitorContainerId);
IDARG_IN_MONITORCREATE MonitorCreate = {};
MonitorCreate.ObjectAttributes = &Attr;
MonitorCreate.pMonitorInfo = &MonitorInfo;
// Create a monitor object with the specified monitor descriptor
IDARG_OUT_MONITORCREATE MonitorCreateOut;
NTSTATUS Status = IddCxMonitorCreate(m_Adapter, &MonitorCreate, &MonitorCreateOut);
if (NT_SUCCESS(Status))
{
m_Monitor = MonitorCreateOut.MonitorObject;
// Associate the monitor with this device context
auto* pContext = WdfObjectGet_IndirectDeviceContextWrapper(MonitorCreateOut.MonitorObject);
pContext->pContext = this;
// Tell the OS that the monitor has been plugged in
IDARG_OUT_MONITORARRIVAL ArrivalOut;
Status = IddCxMonitorArrival(m_Monitor, &ArrivalOut);
}
}
void IndirectDeviceContext::AssignSwapChain(IDDCX_SWAPCHAIN SwapChain, LUID RenderAdapter, HANDLE NewFrameEvent) // Jocke, is it here we could assign rendering gpu?
{
m_ProcessingThread.reset();
auto Device = make_shared<Direct3DDevice>(RenderAdapter);
if (FAILED(Device->Init()))
{
// It's important to delete the swap-chain if D3D initialization fails, so that the OS knows to generate a new
// swap-chain and try again.
WdfObjectDelete(SwapChain);
}
else
{
// Create a new swap-chain processing thread
m_ProcessingThread.reset(new SwapChainProcessor(SwapChain, Device, NewFrameEvent));
}
}
void IndirectDeviceContext::UnassignSwapChain()
{
// Stop processing the last swap-chain
m_ProcessingThread.reset();
}
#pragma endregion
#pragma region DDI Callbacks
_Use_decl_annotations_
NTSTATUS IddSampleAdapterInitFinished(IDDCX_ADAPTER AdapterObject, const IDARG_IN_ADAPTER_INIT_FINISHED* pInArgs)
{
// This is called when the OS has finished setting up the adapter for use by the IddCx driver. It's now possible
// to report attached monitors.
auto* pContext = WdfObjectGet_IndirectDeviceContextWrapper(AdapterObject);
if (NT_SUCCESS(pInArgs->AdapterInitStatus))
{
pContext->pContext->FinishInit();
}
return STATUS_SUCCESS;
}
_Use_decl_annotations_
NTSTATUS IddSampleAdapterCommitModes(IDDCX_ADAPTER AdapterObject, const IDARG_IN_COMMITMODES* pInArgs)
{
UNREFERENCED_PARAMETER(AdapterObject);
UNREFERENCED_PARAMETER(pInArgs);
// For the sample, do nothing when modes are picked - the swap-chain is taken care of by IddCx
// ==============================
// TODO: In a real driver, this function would be used to reconfigure the device to commit the new modes. Loop
// through pInArgs->pPaths and look for IDDCX_PATH_FLAGS_ACTIVE. Any path not active is inactive (e.g. the monitor
// should be turned off).
// ==============================
return STATUS_SUCCESS;
}
_Use_decl_annotations_
NTSTATUS IddSampleParseMonitorDescription(const IDARG_IN_PARSEMONITORDESCRIPTION* pInArgs, IDARG_OUT_PARSEMONITORDESCRIPTION* pOutArgs)
{
// ==============================
// TODO: In a real driver, this function would be called to generate monitor modes for an EDID by parsing it. In
// this sample driver, we hard-code the EDID, so this function can generate known modes.
// ==============================
for (int i = 0; i < monitorModes.size(); i++) {
s_KnownMonitorModes2.push_back(dispinfo(std::get<0>(monitorModes[i]), std::get<1>(monitorModes[i]), std::get<2>(monitorModes[i])));
}
pOutArgs->MonitorModeBufferOutputCount = (UINT)monitorModes.size();
if (pInArgs->MonitorModeBufferInputCount < monitorModes.size())
{
// Return success if there was no buffer, since the caller was only asking for a count of modes
return (pInArgs->MonitorModeBufferInputCount > 0) ? STATUS_BUFFER_TOO_SMALL : STATUS_SUCCESS;
}
else
{
// Copy the known modes to the output buffer
for (DWORD ModeIndex = 0; ModeIndex < monitorModes.size(); ModeIndex++)
{
pInArgs->pMonitorModes[ModeIndex].Size = sizeof(IDDCX_MONITOR_MODE);
pInArgs->pMonitorModes[ModeIndex].Origin = IDDCX_MONITOR_MODE_ORIGIN_MONITORDESCRIPTOR;
pInArgs->pMonitorModes[ModeIndex].MonitorVideoSignalInfo = s_KnownMonitorModes2[ModeIndex];
}
// Set the preferred mode as represented in the EDID
pOutArgs->PreferredMonitorModeIdx = 0;
return STATUS_SUCCESS;
}
}
_Use_decl_annotations_
NTSTATUS IddSampleMonitorGetDefaultModes(IDDCX_MONITOR MonitorObject, const IDARG_IN_GETDEFAULTDESCRIPTIONMODES* pInArgs, IDARG_OUT_GETDEFAULTDESCRIPTIONMODES* pOutArgs)
{
UNREFERENCED_PARAMETER(MonitorObject);
UNREFERENCED_PARAMETER(pInArgs);
UNREFERENCED_PARAMETER(pOutArgs);
// Should never be called since we create a single monitor with a known EDID in this sample driver.
// ==============================
// TODO: In a real driver, this function would be called to generate monitor modes for a monitor with no EDID.
// Drivers should report modes that are guaranteed to be supported by the transport protocol and by nearly all
// monitors (such 640x480, 800x600, or 1024x768). If the driver has access to monitor modes from a descriptor other
// than an EDID, those modes would also be reported here.
// ==============================
return STATUS_NOT_IMPLEMENTED;
}
/// <summary>
/// Creates a target mode from the fundamental mode attributes.
/// </summary>
void CreateTargetMode(DISPLAYCONFIG_VIDEO_SIGNAL_INFO& Mode, UINT Width, UINT Height, UINT VSync) // Jocke, is it her we have the issue with 640*480 init when multiple vdds are chosen
{
Mode.totalSize.cx = Mode.activeSize.cx = Width;
Mode.totalSize.cy = Mode.activeSize.cy = Height;
Mode.AdditionalSignalInfo.vSyncFreqDivider = 1;
Mode.AdditionalSignalInfo.videoStandard = 255;
Mode.vSyncFreq.Numerator = VSync;
Mode.vSyncFreq.Denominator = Mode.hSyncFreq.Denominator = 1;
Mode.hSyncFreq.Numerator = VSync * Height;
Mode.scanLineOrdering = DISPLAYCONFIG_SCANLINE_ORDERING_PROGRESSIVE;
Mode.pixelRate = VSync * Width * Height;
}
void CreateTargetMode(IDDCX_TARGET_MODE& Mode, UINT Width, UINT Height, UINT VSync)
{
Mode.Size = sizeof(Mode);
CreateTargetMode(Mode.TargetVideoSignalInfo.targetVideoSignalInfo, Width, Height, VSync);
}
void CreateTargetMode2(IDDCX_TARGET_MODE2& Mode, UINT Width, UINT Height, UINT VSync)
{
Mode.Size = sizeof(Mode);
Mode.BitsPerComponent.Rgb = IDDCX_BITS_PER_COMPONENT_8 | IDDCX_BITS_PER_COMPONENT_10;
CreateTargetMode(Mode.TargetVideoSignalInfo.targetVideoSignalInfo, Width, Height, VSync);
}
_Use_decl_annotations_
NTSTATUS IddSampleMonitorQueryModes(IDDCX_MONITOR MonitorObject, const IDARG_IN_QUERYTARGETMODES* pInArgs, IDARG_OUT_QUERYTARGETMODES* pOutArgs)////////////////////////////////////////////////////////////////////////////////
{
UNREFERENCED_PARAMETER(MonitorObject);
vector<IDDCX_TARGET_MODE> TargetModes(monitorModes.size());
// Create a set of modes supported for frame processing and scan-out. These are typically not based on the
// monitor's descriptor and instead are based on the static processing capability of the device. The OS will
// report the available set of modes for a given output as the intersection of monitor modes with target modes.
for (int i = 0; i < monitorModes.size(); i++) {
CreateTargetMode(TargetModes[i], std::get<0>(monitorModes[i]), std::get<1>(monitorModes[i]), std::get<2>(monitorModes[i]));
}
pOutArgs->TargetModeBufferOutputCount = (UINT)TargetModes.size();
if (pInArgs->TargetModeBufferInputCount >= TargetModes.size())
{
copy(TargetModes.begin(), TargetModes.end(), pInArgs->pTargetModes);
}
return STATUS_SUCCESS;
}
_Use_decl_annotations_
NTSTATUS IddSampleMonitorAssignSwapChain(IDDCX_MONITOR MonitorObject, const IDARG_IN_SETSWAPCHAIN* pInArgs)
{
auto* pContext = WdfObjectGet_IndirectDeviceContextWrapper(MonitorObject);
pContext->pContext->AssignSwapChain(pInArgs->hSwapChain, pInArgs->RenderAdapterLuid, pInArgs->hNextSurfaceAvailable);
return STATUS_SUCCESS;
}
_Use_decl_annotations_
NTSTATUS IddSampleMonitorUnassignSwapChain(IDDCX_MONITOR MonitorObject)
{
auto* pContext = WdfObjectGet_IndirectDeviceContextWrapper(MonitorObject);
pContext->pContext->UnassignSwapChain();
return STATUS_SUCCESS;
}
_Use_decl_annotations_
NTSTATUS IddSampleEvtIddCxAdapterQueryTargetInfo(
IDDCX_ADAPTER AdapterObject,
IDARG_IN_QUERYTARGET_INFO* pInArgs,
IDARG_OUT_QUERYTARGET_INFO* pOutArgs
)
{
UNREFERENCED_PARAMETER(AdapterObject);
UNREFERENCED_PARAMETER(pInArgs);
pOutArgs->TargetCaps = IDDCX_TARGET_CAPS_HIGH_COLOR_SPACE;
pOutArgs->DitheringSupport.Rgb = IDDCX_BITS_PER_COMPONENT_10;
return STATUS_SUCCESS;
}
_Use_decl_annotations_
NTSTATUS IddSampleEvtIddCxMonitorSetDefaultHdrMetadata(
IDDCX_MONITOR MonitorObject,
const IDARG_IN_MONITOR_SET_DEFAULT_HDR_METADATA* pInArgs
)
{
UNREFERENCED_PARAMETER(MonitorObject);
UNREFERENCED_PARAMETER(pInArgs);
return STATUS_SUCCESS;
}
_Use_decl_annotations_
NTSTATUS IddSampleEvtIddCxParseMonitorDescription2(
const IDARG_IN_PARSEMONITORDESCRIPTION2* pInArgs,
IDARG_OUT_PARSEMONITORDESCRIPTION* pOutArgs
)
{
// ==============================
// TODO: In a real driver, this function would be called to generate monitor modes for an EDID by parsing it. In
// this sample driver, we hard-code the EDID, so this function can generate known modes.
// ==============================
for (int i = 0; i < monitorModes.size(); i++) {
s_KnownMonitorModes2.push_back(dispinfo(std::get<0>(monitorModes[i]), std::get<1>(monitorModes[i]), std::get<2>(monitorModes[i])));
}
pOutArgs->MonitorModeBufferOutputCount = (UINT)monitorModes.size();
if (pInArgs->MonitorModeBufferInputCount < monitorModes.size())
{
// Return success if there was no buffer, since the caller was only asking for a count of modes
return (pInArgs->MonitorModeBufferInputCount > 0) ? STATUS_BUFFER_TOO_SMALL : STATUS_SUCCESS;
}
else
{
// Copy the known modes to the output buffer
for (DWORD ModeIndex = 0; ModeIndex < monitorModes.size(); ModeIndex++)
{
pInArgs->pMonitorModes[ModeIndex].Size = sizeof(IDDCX_MONITOR_MODE2);
pInArgs->pMonitorModes[ModeIndex].Origin = IDDCX_MONITOR_MODE_ORIGIN_MONITORDESCRIPTOR;
pInArgs->pMonitorModes[ModeIndex].MonitorVideoSignalInfo = s_KnownMonitorModes2[ModeIndex];
pInArgs->pMonitorModes[ModeIndex].BitsPerComponent.Rgb = IDDCX_BITS_PER_COMPONENT_8 | IDDCX_BITS_PER_COMPONENT_10;
}
// Set the preferred mode as represented in the EDID
pOutArgs->PreferredMonitorModeIdx = 0;
return STATUS_SUCCESS;
}
}
_Use_decl_annotations_
NTSTATUS IddSampleEvtIddCxMonitorQueryTargetModes2(
IDDCX_MONITOR MonitorObject,
const IDARG_IN_QUERYTARGETMODES2* pInArgs,
IDARG_OUT_QUERYTARGETMODES* pOutArgs
)
{
UNREFERENCED_PARAMETER(MonitorObject);
vector<IDDCX_TARGET_MODE2> TargetModes(monitorModes.size());
// Create a set of modes supported for frame processing and scan-out. These are typically not based on the
// monitor's descriptor and instead are based on the static processing capability of the device. The OS will
// report the available set of modes for a given output as the intersection of monitor modes with target modes.
for (int i = 0; i < monitorModes.size(); i++) {
CreateTargetMode2(TargetModes[i], std::get<0>(monitorModes[i]), std::get<1>(monitorModes[i]), std::get<2>(monitorModes[i]));
}
pOutArgs->TargetModeBufferOutputCount = (UINT)TargetModes.size();
if (pInArgs->TargetModeBufferInputCount >= TargetModes.size())
{
copy(TargetModes.begin(), TargetModes.end(), pInArgs->pTargetModes);
}
return STATUS_SUCCESS;
}
_Use_decl_annotations_
NTSTATUS IddSampleEvtIddCxAdapterCommitModes2(
IDDCX_ADAPTER AdapterObject,
const IDARG_IN_COMMITMODES2* pInArgs
)
{
UNREFERENCED_PARAMETER(AdapterObject);
UNREFERENCED_PARAMETER(pInArgs);
return STATUS_SUCCESS;
}
_Use_decl_annotations_
NTSTATUS IddSampleEvtIddCxMonitorSetGammaRamp(
IDDCX_MONITOR MonitorObject,
const IDARG_IN_SET_GAMMARAMP* pInArgs
)
{
UNREFERENCED_PARAMETER(MonitorObject);
UNREFERENCED_PARAMETER(pInArgs);
return STATUS_SUCCESS;
}
#pragma endregion
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