display_base.cpp File Reference

Definitions for the Windows display base code. More...

#include <cmath>
#include <thread>
#include <initguid.h>
#include <boost/algorithm/string/join.hpp>
#include <boost/process/v1.hpp>
#include <MinHook.h>
#include "display.h"
#include "misc.h"
#include "src/config.h"
#include "src/display_device.h"
#include "src/logging.h"
#include "src/platform/common.h"
#include "src/video.h"

Include dependency graph for display_base.cpp:

Typedefs
typedef enum _D3DKMT_GPU_PREFERENCE_QUERY_STATE	D3DKMT_GPU_PREFERENCE_QUERY_STATE
typedef long	NTSTATUS

Enumerations
enum	_D3DKMT_GPU_PREFERENCE_QUERY_STATE : DWORD {   D3DKMT_GPU_PREFERENCE_STATE_UNINITIALIZED , D3DKMT_GPU_PREFERENCE_STATE_HIGH_PERFORMANCE , D3DKMT_GPU_PREFERENCE_STATE_MINIMUM_POWER , D3DKMT_GPU_PREFERENCE_STATE_UNSPECIFIED ,   D3DKMT_GPU_PREFERENCE_STATE_NOT_FOUND , D3DKMT_GPU_PREFERENCE_STATE_USER_SPECIFIED_GPU }

Functions
std::shared_ptr< display_t >	platf::display (mem_type_e hwdevice_type, const std::string &display_name, const video::config_t &config)
	Get the display_t instance for the given hwdevice_type. If display_name is empty, use the first monitor that's compatible you can find If you require to use this parameter in a separate thread, make a copy of it.
std::vector< std::string >	platf::display_names (mem_type_e hwdevice_type)
bool	platf::needs_encoder_reenumeration ()
	Check if GPUs/drivers have changed since the last call to this function.
NTSTATUS __stdcall	platf::dxgi::NtGdiDdDDIGetCachedHybridQueryValueHook (D3DKMT_GPU_PREFERENCE_QUERY_STATE *gpuPreference)
	Hook for NtGdiDdDDIGetCachedHybridQueryValue() from win32u.dll.
bool	platf::dxgi::test_dxgi_duplication (adapter_t &adapter, output_t &output, bool enumeration_only)
	Tests to determine if the Desktop Duplication API can capture the given output.

Detailed Description

Definitions for the Windows display base code.

Enumeration Type Documentation

_D3DKMT_GPU_PREFERENCE_QUERY_STATE

enum _D3DKMT_GPU_PREFERENCE_QUERY_STATE : DWORD

Enumerator
D3DKMT_GPU_PREFERENCE_STATE_UNINITIALIZED	The GPU preference isn't initialized.
D3DKMT_GPU_PREFERENCE_STATE_HIGH_PERFORMANCE	The highest performing GPU is preferred.
D3DKMT_GPU_PREFERENCE_STATE_MINIMUM_POWER	The minimum-powered GPU is preferred.
D3DKMT_GPU_PREFERENCE_STATE_UNSPECIFIED	A GPU preference isn't specified.
D3DKMT_GPU_PREFERENCE_STATE_NOT_FOUND	A GPU preference isn't found.
D3DKMT_GPU_PREFERENCE_STATE_USER_SPECIFIED_GPU	A specific GPU is preferred.

Function Documentation

display()

std::shared_ptr< display_t > platf::display	(	platf::mem_type_e	hwdevice_type,
		const std::string &	display_name,
		const video::config_t &	config )

Get the display_t instance for the given hwdevice_type. If display_name is empty, use the first monitor that's compatible you can find If you require to use this parameter in a separate thread, make a copy of it.

Parameters

display_name	The name of the monitor that SHOULD be displayed
config	Stream configuration

Returns

The display_t instance based on hwdevice_type.

Pick a display adapter and capture method.

Parameters

hwdevice_type

enables possible use of hardware encoder

needs_encoder_reenumeration()

bool platf::needs_encoder_reenumeration

(

)

Check if GPUs/drivers have changed since the last call to this function.

Returns if GPUs/drivers have changed since the last call to this function.

Returns

true if a change has occurred or if it is unknown whether a change occurred.

NtGdiDdDDIGetCachedHybridQueryValueHook()

NTSTATUS __stdcall platf::dxgi::NtGdiDdDDIGetCachedHybridQueryValueHook

(

D3DKMT_GPU_PREFERENCE_QUERY_STATE *

gpuPreference

)

Hook for NtGdiDdDDIGetCachedHybridQueryValue() from win32u.dll.

Parameters

gpuPreference

A pointer to the location where the preference will be written.

Returns

Always STATUS_SUCCESS if valid arguments are provided.

test_dxgi_duplication()

bool platf::dxgi::test_dxgi_duplication	(	adapter_t &	adapter,
		output_t &	output,
		bool	enumeration_only )

Tests to determine if the Desktop Duplication API can capture the given output.

When testing for enumeration only, we avoid resyncing the thread desktop.

Parameters

adapter	The DXGI adapter to use for capture.
output	The DXGI output to capture.
enumeration_only	Specifies whether this test is occurring for display enumeration.