Namespaces
namespace	detail
	Internal implementation details.

namespace	logitech

Classes
class	Camera
	RAII camera handle for simplified device management. More...

class	com_apartment

class	com_ptr

struct	Device
	Represents a camera device. More...

class	DeviceCapabilities
	Complete device capability snapshot. More...

class	DeviceConnection
	RAII wrapper for DirectShow device connections. More...

class	Error
	Error information with context. More...

class	IDeviceConnection
	Abstract interface for device-specific operations. More...

class	IPlatformInterface
	Abstract interface for platform-specific camera operations. More...

class	KsPropertySet
	RAII wrapper for IKsPropertySet interface. More...

struct	PropertyCapability
	Property capability information. More...

struct	PropRange
	Property range and default information. More...

struct	PropSetting
	Property setting with value and control mode. More...

class	Result
	Result type that can contain either a value or an error. More...

class	Result< void >
	Specialization for void results (operations that don't return values) More...

struct	VendorProperty
	Vendor-specific property data container. More...

class	WindowsPlatformInterface
	Windows DirectShow platform implementation. More...

Typedefs
using	DeviceChangeCallback = std::function<void(bool device_added, const std::wstring& device_path)>
	Device change callback function type.

using	LogCallback
	Log message callback type.

Enumerations
enum class	ErrorCode { Success = 0 , DeviceNotFound , DeviceBusy , PropertyNotSupported , InvalidValue , PermissionDenied , SystemError , InvalidArgument , NotImplemented }
	Error codes for duvc operations. More...

enum class	CamProp { Pan , Tilt , Roll , Zoom , Exposure , Iris , Focus , ScanMode , Privacy , PanRelative , TiltRelative , RollRelative , ZoomRelative , ExposureRelative , IrisRelative , FocusRelative , PanTilt , PanTiltRelative , FocusSimple , DigitalZoom , DigitalZoomRelative , BacklightCompensation , Lamp , Pan , Tilt , Roll , Zoom , Exposure , Iris , Focus , ScanMode , Privacy , PanRelative , TiltRelative , RollRelative , ZoomRelative , ExposureRelative , IrisRelative , FocusRelative , PanTilt , PanTiltRelative , FocusSimple , DigitalZoom , DigitalZoomRelative , BacklightCompensation , Lamp }
	Camera control properties (IAMCameraControl interface) More...

enum class	VidProp { Brightness , Contrast , Hue , Saturation , Sharpness , Gamma , ColorEnable , WhiteBalance , BacklightCompensation , Gain , Brightness , Contrast , Hue , Saturation , Sharpness , Gamma , ColorEnable , WhiteBalance , BacklightCompensation , Gain }
	Video processing properties (IAMVideoProcAmp interface) More...

enum class	CamMode { Auto , Manual , Auto , Manual }
	Property control mode. More...

enum class	CamProp { Pan , Tilt , Roll , Zoom , Exposure , Iris , Focus , ScanMode , Privacy , PanRelative , TiltRelative , RollRelative , ZoomRelative , ExposureRelative , IrisRelative , FocusRelative , PanTilt , PanTiltRelative , FocusSimple , DigitalZoom , DigitalZoomRelative , BacklightCompensation , Lamp , Pan , Tilt , Roll , Zoom , Exposure , Iris , Focus , ScanMode , Privacy , PanRelative , TiltRelative , RollRelative , ZoomRelative , ExposureRelative , IrisRelative , FocusRelative , PanTilt , PanTiltRelative , FocusSimple , DigitalZoom , DigitalZoomRelative , BacklightCompensation , Lamp }

enum class	VidProp { Brightness , Contrast , Hue , Saturation , Sharpness , Gamma , ColorEnable , WhiteBalance , BacklightCompensation , Gain , Brightness , Contrast , Hue , Saturation , Sharpness , Gamma , ColorEnable , WhiteBalance , BacklightCompensation , Gain }

enum class	CamMode { Auto , Manual , Auto , Manual }

enum class	LogLevel { Debug = 0 , Info = 1 , Warning = 2 , Error = 3 , Critical = 4 }
	Log levels. More...

Functions
std::vector< Device >	list_devices ()
	Enumerate all available video input devices.

bool	get_range (const Device &dev, CamProp prop, PropRange &out)
	Get the valid range for a camera control property.

bool	get (const Device &dev, CamProp prop, PropSetting &out)
	Get a camera control property value.

bool	set (const Device &dev, CamProp prop, const PropSetting &in)
	Set a camera control property value.

bool	get_range (const Device &dev, VidProp prop, PropRange &out)
	Get the valid range for a video processing property.

bool	get (const Device &dev, VidProp prop, PropSetting &out)
	Get a video processing property value.

bool	set (const Device &dev, VidProp prop, const PropSetting &in)
	Set a video processing property value.

const char *	to_string (CamProp prop)
	Convert camera property enum to string.

const char *	to_string (VidProp prop)
	Convert video property enum to string.

const char *	to_string (CamMode mode)
	Convert camera mode enum to string.

const wchar_t *	to_wstring (CamProp prop)
	Convert camera property enum to wide string.

const wchar_t *	to_wstring (VidProp prop)
	Convert video property enum to wide string.

const wchar_t *	to_wstring (CamMode mode)
	Convert camera mode enum to wide string.

void	register_device_change_callback (DeviceChangeCallback callback)
	Register callback for device hotplug events.

void	unregister_device_change_callback ()
	Unregister device change callback.

bool	is_device_connected (const Device &dev)
	Check if a device is currently connected and accessible.

bool	get_vendor_property (const Device &dev, const GUID &property_set, ULONG property_id, std::vector< uint8_t > &data)
	Get vendor-specific property data from device.

bool	set_vendor_property (const Device &dev, const GUID &property_set, ULONG property_id, const std::vector< uint8_t > &data)
	Set vendor-specific property data on device.

bool	query_vendor_property_support (const Device &dev, const GUID &property_set, ULONG property_id)
	Query whether device supports a vendor-specific property.

DeviceConnection *	get_cached_connection (const Device &dev)

void	release_cached_connection (const Device &dev)

void	clear_connection_cache ()

Result< Camera >	open_camera (int device_index)
	Create camera from device index.

Result< Camera >	open_camera (const Device &device)
	Create camera from device.

Result< Camera >	open_camera (const std::wstring &device_path)
	Create camera from device path.

Result< DeviceCapabilities >	get_device_capabilities (const Device &device)
	Create device capability snapshot.

Result< DeviceCapabilities >	get_device_capabilities (int device_index)
	Create device capability snapshot by index.

Device	find_device_by_path (const std::wstring &device_path)
	Find device by unique Windows device path.

const char *	to_string (ErrorCode code)
	Convert error code to string.

template<typename T >
Result< T >	Ok (T value)
	Helper to create successful Result.

Result< void >	Ok ()
	Helper to create successful void Result.

template<typename T >
Result< T >	Err (Error error)
	Helper to create error Result.

template<typename T >
Result< T >	Err (ErrorCode code, std::string message="")
	Helper to create error Result from code.

std::unique_ptr< IPlatformInterface >	create_platform_interface ()
	Get platform-specific interface implementation.

com_ptr< ICreateDevEnum >	create_dev_enum ()
	Create DirectShow device enumerator.

com_ptr< IEnumMoniker >	enum_video_devices (ICreateDevEnum *dev)
	Enumerate video input devices.

std::wstring	read_friendly_name (IMoniker *mon)
	Read friendly name from device moniker.

std::wstring	read_device_path (IMoniker *mon)
	Read device path from moniker.

bool	is_same_device (const Device &d, const std::wstring &name, const std::wstring &path)
	Check if two device identifiers refer to same device.

com_ptr< IBaseFilter >	open_device_filter (const Device &dev)
	Create DirectShow filter from device.

std::string	decode_system_error (unsigned long error_code)
	Decode system error code to human-readable string.

std::string	decode_hresult (HRESULT hr)
	Decode HRESULT to human-readable string.

std::string	get_hresult_details (HRESULT hr)
	Get detailed HRESULT information.

bool	is_device_error (HRESULT hr)
	Check if HRESULT indicates a device-related error.

bool	is_permission_error (HRESULT hr)
	Check if HRESULT indicates permission/access error.

std::string	get_diagnostic_info ()
	Get diagnostic information for troubleshooting.

const char *	to_string (LogLevel level)
	Convert log level to string.

void	set_log_callback (LogCallback callback)
	Set global log callback.

void	set_log_level (LogLevel level)
	Set minimum log level.

LogLevel	get_log_level ()
	Get current minimum log level.

void	log_message (LogLevel level, const std::string &message)
	Log a message.

void	log_debug (const std::string &message)
	Log debug message.

void	log_info (const std::string &message)
	Log info message.

void	log_warning (const std::string &message)
	Log warning message.

void	log_error (const std::string &message)
	Log error message.

void	log_critical (const std::string &message)
	Log critical message.

std::string	to_utf8 (const std::wstring &wstr)
	Converts a wide string (UTF-16 on Windows) to a UTF-8 string.

std::wstring	to_wstring (const std::string &str)
	Converts a UTF-8 string to a wide string (UTF-16 on Windows)

static std::string	wide_to_utf8 (const wchar_t *ws)

static void	throw_hr (HRESULT hr, const char *where)

static LRESULT CALLBACK	device_wndproc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)

static std::wstring	read_prop_bstr (IPropertyBag bag, const wchar_t key)

static com_ptr< IBaseFilter >	bind_to_filter (IMoniker *mon)

static com_ptr< IAMCameraControl >	get_cam_ctrl (IBaseFilter *f)

static com_ptr< IAMVideoProcAmp >	get_vproc (IBaseFilter *f)

static com_ptr< IKsPropertySet >	get_property_set (IBaseFilter *f)

static long	camprop_to_dshow (CamProp p)

static long	vidprop_to_dshow (VidProp p)

static long	to_flag (CamMode m, bool is_camera_control)

static CamMode	from_flag (long flag, bool is_camera_control)

static std::wstring	read_prop_bstr (IPropertyBag bag, const wchar_t key)

static com_ptr< IBaseFilter >	bind_to_filter (IMoniker *mon)

static com_ptr< IAMCameraControl >	get_cam_ctrl (IBaseFilter *f)

static com_ptr< IAMVideoProcAmp >	get_vproc (IBaseFilter *f)

static long	camprop_to_dshow (CamProp p)

static long	vidprop_to_dshow (VidProp p)

static long	to_flag (CamMode m, bool is_camera_control)

static CamMode	from_flag (long flag, bool is_camera_control)

static LRESULT CALLBACK	device_notification_wndproc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
	Window procedure for handling device change notifications.

static bool	register_notification_window_class ()
	Register window class for device notifications.

static HWND	create_notification_window ()
	Create invisible window for receiving device notifications.

static HDEVNOTIFY	register_device_notifications (HWND hwnd)
	Register for device interface notifications.

static std::string	get_timestamp ()
	Get current timestamp as string.

static void	default_log_callback (LogLevel level, const std::string &message)
	Default logging callback that writes to stderr.

static com_ptr< IKsPropertySet >	get_property_set (IBaseFilter *f)

Variables
static DeviceChangeCallback	g_device_callback = nullptr

static HWND	g_notification_window = nullptr

static HDEVNOTIFY	g_device_notify = nullptr

static std::mutex	g_cache_mutex

static std::unordered_map< std::wstring, std::unique_ptr< DeviceConnection > >	g_connection_cache

static std::mutex	g_log_mutex

static LogCallback	g_log_callback = nullptr

static LogLevel	g_min_log_level = LogLevel::Info

Typedef Documentation

◆ DeviceChangeCallback

using duvc::DeviceChangeCallback = std::function<void(bool device_added, const std::wstring& device_path)>

Device change callback function type.

Parameters

added	true if device was added, false if removed
device_path	Path of the device that changed

Definition at line 34 of file core.h.

◆ LogCallback

using duvc::LogCallback

Initial value:

std::function<void(LogLevel level, const std::string &message)>

Log message callback type.

Parameters

level	Log level
message	Log message

Definition at line 36 of file logging.h.

Enumeration Type Documentation

◆ CamMode [1/2]

enum class duvc::CamMode

strong

Property control mode.

Enumerator
Auto	Automatic control by camera.
Manual	Manual control by application.
Auto
Manual

Definition at line 66 of file types.h.

◆ CamMode [2/2]

enum class duvc::CamMode

strong

Enumerator
Auto	Automatic control by camera.
Manual	Manual control by application.
Auto
Manual

Definition at line 23 of file defs.h.

◆ CamProp [1/2]

enum class duvc::CamProp

strong

Camera control properties (IAMCameraControl interface)

These properties correspond to DirectShow's IAMCameraControl interface and control physical camera mechanisms.

Enumerator
Pan	Horizontal camera rotation.
Tilt	Vertical camera rotation.
Roll	Camera roll rotation.
Zoom	Optical zoom level.
Exposure	Exposure time.
Iris	Aperture/iris setting.
Focus	Focus position.
ScanMode	Scan mode (progressive/interlaced)
Privacy	Privacy mode on/off.
PanRelative	Relative pan movement.
TiltRelative	Relative tilt movement.
RollRelative	Relative roll movement.
ZoomRelative	Relative zoom movement.
ExposureRelative	Relative exposure adjustment.
IrisRelative	Relative iris adjustment.
FocusRelative	Relative focus adjustment.
PanTilt	Combined pan/tilt control.
PanTiltRelative	Relative pan/tilt movement.
FocusSimple	Simple focus control.
DigitalZoom	Digital zoom level.
DigitalZoomRelative	Relative digital zoom.
BacklightCompensation	Backlight compensation.
Lamp	Camera lamp/flash control.
Pan
Tilt
Roll
Zoom
Exposure
Iris
Focus
ScanMode
Privacy
PanRelative
TiltRelative
RollRelative
ZoomRelative
ExposureRelative
IrisRelative
FocusRelative
PanTilt
PanTiltRelative
FocusSimple
DigitalZoom
DigitalZoomRelative
BacklightCompensation
Lamp

Definition at line 18 of file types.h.

◆ CamProp [2/2]

enum class duvc::CamProp

strong

Enumerator
Pan	Horizontal camera rotation.
Tilt	Vertical camera rotation.
Roll	Camera roll rotation.
Zoom	Optical zoom level.
Exposure	Exposure time.
Iris	Aperture/iris setting.
Focus	Focus position.
ScanMode	Scan mode (progressive/interlaced)
Privacy	Privacy mode on/off.
PanRelative	Relative pan movement.
TiltRelative	Relative tilt movement.
RollRelative	Relative roll movement.
ZoomRelative	Relative zoom movement.
ExposureRelative	Relative exposure adjustment.
IrisRelative	Relative iris adjustment.
FocusRelative	Relative focus adjustment.
PanTilt	Combined pan/tilt control.
PanTiltRelative	Relative pan/tilt movement.
FocusSimple	Simple focus control.
DigitalZoom	Digital zoom level.
DigitalZoomRelative	Relative digital zoom.
BacklightCompensation	Backlight compensation.
Lamp	Camera lamp/flash control.
Pan
Tilt
Roll
Zoom
Exposure
Iris
Focus
ScanMode
Privacy
PanRelative
TiltRelative
RollRelative
ZoomRelative
ExposureRelative
IrisRelative
FocusRelative
PanTilt
PanTiltRelative
FocusSimple
DigitalZoom
DigitalZoomRelative
BacklightCompensation
Lamp

Definition at line 7 of file defs.h.

◆ ErrorCode

enum class duvc::ErrorCode

strong

Error codes for duvc operations.

Enumerator
Success	Operation succeeded.
DeviceNotFound	Device not found or disconnected.
DeviceBusy	Device is busy or in use.
PropertyNotSupported	Property not supported by device.
InvalidValue	Property value out of range.
PermissionDenied	Insufficient permissions.
SystemError	System/platform error.
InvalidArgument	Invalid function argument.
NotImplemented	Feature not implemented on this platform.

Definition at line 19 of file result.h.

◆ LogLevel

enum class duvc::LogLevel

strong

Log levels.

Enumerator
Debug	Debug information.
Info	Informational messages.
Warning	Warning messages.
Error	Error messages.
Critical	Critical errors.

Definition at line 16 of file logging.h.

◆ VidProp [1/2]

enum class duvc::VidProp

strong

Video processing properties (IAMVideoProcAmp interface)

These properties correspond to DirectShow's IAMVideoProcAmp interface and control image processing parameters.

Enumerator
Brightness	Image brightness level.
Contrast	Image contrast level.
Hue	Color hue adjustment.
Saturation	Color saturation level.
Sharpness	Image sharpness level.
Gamma	Gamma correction value.
ColorEnable	Color vs. monochrome mode.
WhiteBalance	White balance adjustment.
BacklightCompensation	Backlight compensation level.
Gain	Sensor gain level.
Brightness
Contrast
Hue
Saturation
Sharpness
Gamma
ColorEnable
WhiteBalance
BacklightCompensation
Gain

Definition at line 50 of file types.h.

◆ VidProp [2/2]

enum class duvc::VidProp

strong

Enumerator
Brightness	Image brightness level.
Contrast	Image contrast level.
Hue	Color hue adjustment.
Saturation	Color saturation level.
Sharpness	Image sharpness level.
Gamma	Gamma correction value.
ColorEnable	Color vs. monochrome mode.
WhiteBalance	White balance adjustment.
BacklightCompensation	Backlight compensation level.
Gain	Sensor gain level.
Brightness
Contrast
Hue
Saturation
Sharpness
Gamma
ColorEnable
WhiteBalance
BacklightCompensation
Gain

Definition at line 17 of file defs.h.

Function Documentation

◆ bind_to_filter() [1/2]

static com_ptr< IBaseFilter > duvc::bind_to_filter ( IMoniker * mon )

static

Definition at line 223 of file core.cpp.

References throw_hr().

Referenced by open_device_filter().

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◆ bind_to_filter() [2/2]

static com_ptr< IBaseFilter > duvc::bind_to_filter ( IMoniker * mon )

static

Definition at line 81 of file connection_pool.cpp.

References throw_hr().

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◆ camprop_to_dshow() [1/2]

static long duvc::camprop_to_dshow ( CamProp p )

static

Definition at line 279 of file core.cpp.

Referenced by duvc::DeviceConnection::get(), duvc::DeviceConnection::get_range(), and duvc::DeviceConnection::set().

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◆ camprop_to_dshow() [2/2]

static long duvc::camprop_to_dshow ( CamProp p )

static

Definition at line 132 of file connection_pool.cpp.

◆ clear_connection_cache()

void duvc::clear_connection_cache ( )

Definition at line 505 of file core.cpp.

References g_cache_mutex, and g_connection_cache.

Referenced by duvc_clear_cache().

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◆ create_dev_enum()

com_ptr< ICreateDevEnum > duvc::create_dev_enum ( )

Create DirectShow device enumerator.

Returns: COM pointer to ICreateDevEnum

Definition at line 173 of file core.cpp.

References CLSID_SystemDeviceEnum, IID_ICreateDevEnum, and throw_hr().

Referenced by is_device_connected(), list_devices(), and open_device_filter().

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◆ create_notification_window()

static HWND duvc::create_notification_window ( )

static

Create invisible window for receiving device notifications.

Returns: Window handle or nullptr if failed

Definition at line 95 of file device_monitor.cpp.

References DUVC_LOG_ERROR, and register_notification_window_class().

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◆ create_platform_interface()

std::unique_ptr< IPlatformInterface > duvc::create_platform_interface ( )

Get platform-specific interface implementation.

Returns: Platform interface instance

Definition at line 60 of file factory.cpp.

◆ decode_hresult()

std::string duvc::decode_hresult ( HRESULT hr )

Decode HRESULT to human-readable string.

Parameters

hr	HRESULT value

Returns: Human-readable error description

Definition at line 70 of file error_decoder.cpp.

References decode_system_error().

Referenced by get_diagnostic_info(), get_hresult_details(), duvc::KsPropertySet::get_property(), duvc::KsPropertySet::KsPropertySet(), duvc::KsPropertySet::query_support(), and duvc::KsPropertySet::set_property().

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◆ decode_system_error()

std::string duvc::decode_system_error ( unsigned long error_code )

Decode system error code to human-readable string.

Parameters

error_code System error code

Returns: Human-readable error description

Definition at line 26 of file error_decoder.cpp.

Referenced by decode_hresult().

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◆ default_log_callback()

static void duvc::default_log_callback	(	LogLevel	level,
		const std::string &	message )

static

Default logging callback that writes to stderr.

Parameters

level	Log level
message	Log message

Definition at line 59 of file logging.cpp.

References Error, get_timestamp(), and to_string().

Referenced by log_message().

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◆ device_notification_wndproc()

static LRESULT CALLBACK duvc::device_notification_wndproc	(	HWND	hwnd,
		UINT	msg,
		WPARAM	wParam,
		LPARAM	lParam )

static

Window procedure for handling device change notifications.

Parameters

hwnd	Window handle
msg	Message type
wParam	Message parameter
lParam	Message parameter

Returns: Message result

Definition at line 32 of file device_monitor.cpp.

References DUVC_LOG_DEBUG, DUVC_LOG_ERROR, DUVC_LOG_INFO, and g_device_callback.

Referenced by register_notification_window_class().

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◆ device_wndproc()

static LRESULT CALLBACK duvc::device_wndproc	(	HWND	hwnd,
		UINT	msg,
		WPARAM	wParam,
		LPARAM	lParam )

static

Definition at line 156 of file core.cpp.

References g_device_callback.

Referenced by register_device_change_callback().

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◆ enum_video_devices()

com_ptr< IEnumMoniker > duvc::enum_video_devices ( ICreateDevEnum * dev )

Enumerate video input devices.

Parameters

dev	Device enumerator

Returns: COM pointer to IEnumMoniker for video devices

Definition at line 181 of file core.cpp.

References CLSID_VideoInputDeviceCategory, and throw_hr().

Referenced by is_device_connected(), list_devices(), and open_device_filter().

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◆ Err() [1/2]

template<typename T >

Result< T > duvc::Err ( Error error )

Helper to create error Result.

Template Parameters

T	Value type

Parameters

error Error to wrap

Returns: Error Result

Definition at line 230 of file result.h.

◆ Err() [2/2]

template<typename T >

Result< T > duvc::Err	(	ErrorCode	code,
		std::string	message = "" )

Helper to create error Result from code.

Template Parameters

T	Value type

Parameters

code	Error code
message	Optional error message

Returns: Error Result

Definition at line 241 of file result.h.

◆ find_device_by_path()

Device duvc::find_device_by_path ( const std::wstring & device_path )

Find device by unique Windows device path.

Searches the current device enumeration for a device matching the specified Windows device instance path. This provides unambiguous identification when multiple cameras have identical names due to firmware variations.

Parameters

device_path Wide string containing the device path (case-insensitive)

Returns: Device object with matching path

Exceptions

std::runtime_error if enumeration fails or device not found

The device path format is: USB\VID_XXXX&PID_XXXX&MI_XX#...#{GUID}

Note: Device paths can be obtained from Device::path member

See also: list_devices() to enumerate all devices with paths

Example:

auto devices = duvc::list_devices();
try {
    auto target = duvc::find_device_by_path(devices[0].path);
    Camera camera(target);
} catch (const std::runtime_error &e) {
    // Handle device not found
}

Definition at line 211 of file device.cpp.

References CLSID_SystemDeviceEnum, CLSID_VideoInputDeviceCategory, IID_ICreateDevEnum, read_device_path(), read_friendly_name(), and throw_hr().

Referenced by duvc::Camera::Camera(), duvc_find_device_by_path(), and open_camera().

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◆ from_flag() [1/2]

static CamMode duvc::from_flag	(	long	flag,
		bool	is_camera_control )

static

Definition at line 332 of file core.cpp.

References Auto, CameraControl_Flags_Auto, Manual, and VideoProcAmp_Flags_Auto.

Referenced by duvc::DeviceConnection::get(), duvc::DeviceConnection::get(), duvc::DeviceConnection::get_range(), and duvc::DeviceConnection::get_range().

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◆ from_flag() [2/2]

static CamMode duvc::from_flag	(	long	flag,
		bool	is_camera_control )

static

Definition at line 222 of file connection_pool.cpp.

References Auto, CameraControl_Flags_Auto, Manual, and VideoProcAmp_Flags_Auto.

◆ get_cached_connection()

DeviceConnection * duvc::get_cached_connection ( const Device & dev )

Definition at line 480 of file core.cpp.

References g_cache_mutex, and g_connection_cache.

Referenced by is_device_connected().

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◆ get_cam_ctrl() [1/2]

static com_ptr< IAMCameraControl > duvc::get_cam_ctrl ( IBaseFilter * f )

static

Definition at line 230 of file core.cpp.

Referenced by duvc::DeviceConnection::DeviceConnection().

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◆ get_cam_ctrl() [2/2]

static com_ptr< IAMCameraControl > duvc::get_cam_ctrl ( IBaseFilter * f )

static

Definition at line 90 of file connection_pool.cpp.

◆ get_device_capabilities() [1/2]

Result< DeviceCapabilities > duvc::get_device_capabilities ( const Device & device )

Create device capability snapshot.

Parameters

device Device to analyze

Returns: Result containing DeviceCapabilities or error

Definition at line 140 of file capability.cpp.

References DeviceNotFound, InvalidArgument, duvc::DeviceCapabilities::is_device_accessible(), duvc::Device::is_valid(), duvc::Device::name, Ok(), and duvc::Device::path.

Referenced by duvc_get_device_capabilities(), duvc_get_device_capabilities_by_index(), and get_device_capabilities().

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◆ get_device_capabilities() [2/2]

Result< DeviceCapabilities > duvc::get_device_capabilities ( int device_index )

Create device capability snapshot by index.

Parameters

device_index Device index from list_devices()

Returns: Result containing DeviceCapabilities or error

Definition at line 188 of file capability.cpp.

References DeviceNotFound, get_device_capabilities(), and list_devices().

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◆ get_diagnostic_info()

std::string duvc::get_diagnostic_info ( )

Get diagnostic information for troubleshooting.

Returns: Diagnostic information string

Definition at line 149 of file error_decoder.cpp.

References CLSID_SystemDeviceEnum, decode_hresult(), and IID_ICreateDevEnum.

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◆ get_hresult_details()

std::string duvc::get_hresult_details ( HRESULT hr )

Get detailed HRESULT information.

Parameters

hr	HRESULT value

Returns: Detailed error information including facility and code

Definition at line 94 of file error_decoder.cpp.

References decode_hresult().

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◆ get_log_level()

LogLevel duvc::get_log_level ( )

Get current minimum log level.

Returns: Current minimum log level

Definition at line 83 of file logging.cpp.

References g_log_mutex, and g_min_log_level.

Referenced by duvc_get_log_level().

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◆ get_property_set() [1/2]

static com_ptr< IKsPropertySet > duvc::get_property_set ( IBaseFilter * f )

static

Definition at line 242 of file core.cpp.

Referenced by get_vendor_property(), query_vendor_property_support(), and set_vendor_property().

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◆ get_property_set() [2/2]

static com_ptr< IKsPropertySet > duvc::get_property_set ( IBaseFilter * f )

static

Definition at line 21 of file constants.cpp.

◆ get_timestamp()

static std::string duvc::get_timestamp ( )

static

Get current timestamp as string.

Returns: Formatted timestamp string

Definition at line 41 of file logging.cpp.

Referenced by default_log_callback().

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◆ get_vendor_property()

bool duvc::get_vendor_property	(	const Device &	dev,
		const GUID &	property_set,
		ULONG	property_id,
		std::vector< uint8_t > &	data )

Get vendor-specific property data from device.

Parameters

	dev	Target device to query
	property_set	Property set GUID identifying the extension unit
	property_id	Property ID within the extension unit
[out]	data	Output buffer to receive property data

Returns: true if property was read successfully, false on error

Definition at line 584 of file core.cpp.

References get_property_set(), and open_device_filter().

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◆ get_vproc() [1/2]

static com_ptr< IAMVideoProcAmp > duvc::get_vproc ( IBaseFilter * f )

static

Definition at line 236 of file core.cpp.

Referenced by duvc::DeviceConnection::DeviceConnection().

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◆ get_vproc() [2/2]

static com_ptr< IAMVideoProcAmp > duvc::get_vproc ( IBaseFilter * f )

static

Definition at line 99 of file connection_pool.cpp.

◆ is_device_connected()

bool duvc::is_device_connected ( const Device & dev )

Check if a device is currently connected and accessible.

Parameters

dev	Device to check

Returns: true if device is connected and can be opened

This performs a lightweight check to determine if the device still exists and can be accessed.

Definition at line 549 of file core.cpp.

References create_dev_enum(), enum_video_devices(), get_cached_connection(), is_same_device(), read_device_path(), and read_friendly_name().

Referenced by duvc::DeviceCapabilities::DeviceCapabilities(), duvc_is_device_connected(), duvc_is_device_connected(), duvc::Camera::is_valid(), open_camera(), open_camera(), and duvc::DeviceCapabilities::refresh().

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◆ is_device_error()

bool duvc::is_device_error ( HRESULT hr )

Check if HRESULT indicates a device-related error.

Parameters

hr	HRESULT value

Returns: true if device-related error

Definition at line 121 of file error_decoder.cpp.

References VFW_E_DEVICE_IN_USE.

◆ is_permission_error()

bool duvc::is_permission_error ( HRESULT hr )

Check if HRESULT indicates permission/access error.

Parameters

hr	HRESULT value

Returns: true if permission error

Definition at line 138 of file error_decoder.cpp.

◆ is_same_device()

bool duvc::is_same_device	(	const Device &	d,
		const std::wstring &	name,
		const std::wstring &	path )

Check if two device identifiers refer to same device.

Parameters

d	Device structure to compare
name	Device name from enumeration
path	Device path from enumeration

Returns: true if same device

Definition at line 250 of file core.cpp.

Referenced by is_device_connected(), and open_device_filter().

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◆ list_devices()

std::vector< Device > duvc::list_devices ( )

Enumerate all available video input devices.

Returns: Vector of detected devices

Exceptions

std::runtime_error if device enumeration fails

Definition at line 626 of file core.cpp.

References create_dev_enum(), enum_video_devices(), read_device_path(), and read_friendly_name().

Referenced by duvc::Camera::Camera(), duvc_cam_get(), duvc_cam_get_range(), duvc_cam_set(), duvc_get_device_count(), duvc_get_device_name(), duvc_get_device_path(), duvc_is_device_connected(), duvc_list_devices(), duvc_refresh_devices(), duvc_vid_get(), duvc_vid_get_range(), duvc_vid_set(), get_device_capabilities(), and open_camera().

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◆ log_critical()

void duvc::log_critical ( const std::string & message )

Log critical message.

Parameters

message Critical message

Definition at line 126 of file logging.cpp.

References Critical, and log_message().

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◆ log_debug()

void duvc::log_debug ( const std::string & message )

Log debug message.

Parameters

message Debug message

Definition at line 110 of file logging.cpp.

References Debug, and log_message().

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◆ log_error()

void duvc::log_error ( const std::string & message )

Log error message.

Parameters

message Error message

Definition at line 122 of file logging.cpp.

References Error, and log_message().

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◆ log_info()

void duvc::log_info ( const std::string & message )

Log info message.

Parameters

message Info message

Definition at line 114 of file logging.cpp.

References Info, and log_message().

Referenced by duvc_initialize().

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◆ log_message()

void duvc::log_message	(	LogLevel	level,
		const std::string &	message )

Log a message.

Parameters

level	Log level
message	Log message

Definition at line 88 of file logging.cpp.

References default_log_callback(), Error, g_log_callback, g_log_mutex, and g_min_log_level.

Referenced by duvc_log_message(), log_critical(), log_debug(), log_error(), log_info(), and log_warning().

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◆ log_warning()

void duvc::log_warning ( const std::string & message )

Log warning message.

Parameters

message Warning message

Definition at line 118 of file logging.cpp.

References log_message(), and Warning.

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◆ Ok() [1/2]

Result< void > duvc::Ok ( )

inline

Helper to create successful void Result.

Returns: Successful void Result

Definition at line 222 of file result.h.

Referenced by duvc::WindowsPlatformInterface::create_connection(), duvc::Camera::get(), duvc::Camera::get(), get_device_capabilities(), duvc::logitech::get_logitech_property_typed(), duvc::KsPropertySet::get_property(), duvc::KsPropertySet::get_property_typed(), duvc::Camera::get_range(), duvc::Camera::get_range(), duvc::WindowsPlatformInterface::is_device_connected(), duvc::WindowsPlatformInterface::list_devices(), open_camera(), open_camera(), duvc::KsPropertySet::query_support(), duvc::DeviceCapabilities::refresh(), duvc::Camera::set(), duvc::Camera::set(), duvc::KsPropertySet::set_property(), and duvc::logitech::supports_logitech_properties().

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◆ Ok() [2/2]

template<typename T >

Result< T > duvc::Ok ( T value )

Helper to create successful Result.

Template Parameters

T	Value type

Parameters

value Value to wrap

Returns: Successful Result

Definition at line 214 of file result.h.

◆ open_camera() [1/3]

Result< Camera > duvc::open_camera ( const Device & device )

Create camera from device.

Parameters

device Device to connect to

Returns: Result containing Camera or error

Definition at line 139 of file camera.cpp.

References DeviceNotFound, InvalidArgument, is_device_connected(), duvc::Device::is_valid(), and Ok().

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◆ open_camera() [2/3]

Result< Camera > duvc::open_camera ( const std::wstring & device_path )

Create camera from device path.

Parameters

device_path Windows device instance path

Returns: Result containing Camera or error

Most precise method for opening cameras when multiple devices share the same name or VID/PID due to firmware variations.

See also: find_device_by_path()

Definition at line 151 of file camera.cpp.

References DeviceNotFound, find_device_by_path(), InvalidArgument, is_device_connected(), duvc::Device::is_valid(), and Ok().

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◆ open_camera() [3/3]

Result< Camera > duvc::open_camera ( int device_index )

Create camera from device index.

Parameters

device_index Index from list_devices()

Returns: Result containing Camera or error

Definition at line 130 of file camera.cpp.

References DeviceNotFound, list_devices(), and open_camera().

Referenced by duvc_open_camera(), duvc_open_camera_by_index(), duvc_quick_get_camera_property(), duvc_quick_get_camera_property_range(), duvc_quick_get_video_property(), duvc_quick_get_video_property_range(), duvc_quick_set_camera_property(), duvc_quick_set_video_property(), and open_camera().

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◆ open_device_filter()

com_ptr< IBaseFilter > duvc::open_device_filter ( const Device & dev )

Create DirectShow filter from device.

Parameters

dev	Device to open

Returns: COM pointer to IBaseFilter

Definition at line 260 of file core.cpp.

References bind_to_filter(), create_dev_enum(), enum_video_devices(), is_same_device(), read_device_path(), and read_friendly_name().

Referenced by duvc::DeviceConnection::DeviceConnection(), get_vendor_property(), query_vendor_property_support(), and set_vendor_property().

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◆ query_vendor_property_support()

bool duvc::query_vendor_property_support	(	const Device &	dev,
		const GUID &	property_set,
		ULONG	property_id )

Query whether device supports a vendor-specific property.

Parameters

dev	Target device to check
property_set	Property set GUID to query
property_id	Property ID within set to query

Returns: true if property is supported for get/set operations, false otherwise

Definition at line 614 of file core.cpp.

References get_property_set(), KSPROPERTY_SUPPORT_GET, KSPROPERTY_SUPPORT_SET, and open_device_filter().

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◆ read_device_path()

std::wstring duvc::read_device_path ( IMoniker * mon )

Read device path from moniker.

Parameters

mon	Device moniker

Returns: Device path

Definition at line 207 of file core.cpp.

References IID_IPropertyBag, and read_prop_bstr().

Referenced by find_device_by_path(), is_device_connected(), list_devices(), and open_device_filter().

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◆ read_friendly_name()

std::wstring duvc::read_friendly_name ( IMoniker * mon )

Read friendly name from device moniker.

Parameters

mon	Device moniker

Returns: Device friendly name

Definition at line 199 of file core.cpp.

References IID_IPropertyBag, and read_prop_bstr().

Referenced by find_device_by_path(), is_device_connected(), list_devices(), and open_device_filter().

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◆ read_prop_bstr() [1/2]

static std::wstring duvc::read_prop_bstr	(	IPropertyBag *	bag,
		const wchar_t *	key )

static

Definition at line 189 of file core.cpp.

Referenced by read_device_path(), and read_friendly_name().

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◆ read_prop_bstr() [2/2]

static std::wstring duvc::read_prop_bstr	(	IPropertyBag *	bag,
		const wchar_t *	key )

static

Definition at line 54 of file device.cpp.

◆ register_device_change_callback()

void duvc::register_device_change_callback ( DeviceChangeCallback callback )

Register callback for device hotplug events.

Parameters

callback Function to call when devices are added/removed

Only one callback can be registered at a time. Calling this multiple times will replace the previous callback.

Definition at line 511 of file core.cpp.

References CLSID_VideoInputDeviceCategory, device_wndproc(), g_device_callback, g_device_notify, and g_notification_window.

Referenced by duvc_register_device_change_callback().

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◆ register_device_notifications()

static HDEVNOTIFY duvc::register_device_notifications ( HWND hwnd )

static

Register for device interface notifications.

Parameters

hwnd	Window to receive notifications

Returns: Device notification handle or nullptr if failed

Definition at line 123 of file device_monitor.cpp.

References CLSID_VideoInputDeviceCategory, DUVC_LOG_ERROR, and DUVC_LOG_INFO.

◆ register_notification_window_class()

static bool duvc::register_notification_window_class ( )

static

Register window class for device notifications.

Returns: true if successful

Definition at line 72 of file device_monitor.cpp.

References device_notification_wndproc(), and DUVC_LOG_ERROR.

Referenced by create_notification_window().

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◆ release_cached_connection()

void duvc::release_cached_connection ( const Device & dev )

Definition at line 499 of file core.cpp.

References g_cache_mutex, and g_connection_cache.

◆ set_log_callback()

void duvc::set_log_callback ( LogCallback callback )

Set global log callback.

Parameters

callback Callback function (nullptr to disable logging)

Definition at line 73 of file logging.cpp.

References g_log_callback, and g_log_mutex.

Referenced by duvc_set_log_callback().

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◆ set_log_level()

void duvc::set_log_level ( LogLevel level )

Set minimum log level.

Parameters

level Minimum level to log

Definition at line 78 of file logging.cpp.

References g_log_mutex, and g_min_log_level.

Referenced by duvc_initialize(), and duvc_set_log_level().

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◆ set_vendor_property()

bool duvc::set_vendor_property	(	const Device &	dev,
		const GUID &	property_set,
		ULONG	property_id,
		const std::vector< uint8_t > &	data )

Set vendor-specific property data on device.

Parameters

dev	Target device to modify
property_set	Property set GUID identifying the extension unit
property_id	Property ID within the extension unit
data	Property data to write (vendor-specific binary format)

Returns: true if property was written successfully, false on error

Definition at line 602 of file core.cpp.

References get_property_set(), and open_device_filter().

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◆ throw_hr()

static void duvc::throw_hr	(	HRESULT	hr,
		const char *	where )

static

Definition at line 115 of file core.cpp.

References wide_to_utf8().

Referenced by bind_to_filter(), duvc::com_apartment::com_apartment(), duvc::DeviceConnection::com_apartment::com_apartment(), create_dev_enum(), enum_video_devices(), and find_device_by_path().

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◆ to_flag() [1/2]

static long duvc::to_flag	(	CamMode	m,
		bool	is_camera_control )

static

Definition at line 324 of file core.cpp.

References Auto, CameraControl_Flags_Auto, CameraControl_Flags_Manual, VideoProcAmp_Flags_Auto, and VideoProcAmp_Flags_Manual.

Referenced by duvc::DeviceConnection::set(), and duvc::DeviceConnection::set().

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◆ to_flag() [2/2]

static long duvc::to_flag	(	CamMode	m,
		bool	is_camera_control )

static

Definition at line 212 of file connection_pool.cpp.

References Auto, CameraControl_Flags_Auto, CameraControl_Flags_Manual, VideoProcAmp_Flags_Auto, and VideoProcAmp_Flags_Manual.

◆ to_string() [1/5]

const char * duvc::to_string ( CamMode mode )

Convert camera mode enum to string.

Parameters

mode	Camera mode to convert

Returns: Mode name as C string ("AUTO" or "MANUAL")

Definition at line 768 of file core.cpp.

References Auto.

◆ to_string() [2/5]

const char * duvc::to_string ( CamProp prop )

Convert camera property enum to string.

Parameters

prop	Camera property to convert

Returns: Property name as C string

Definition at line 678 of file core.cpp.

References BacklightCompensation, DigitalZoom, DigitalZoomRelative, Exposure, ExposureRelative, Focus, FocusRelative, FocusSimple, Iris, IrisRelative, Lamp, Pan, PanRelative, PanTilt, PanTiltRelative, Privacy, Roll, RollRelative, ScanMode, Tilt, TiltRelative, Zoom, and ZoomRelative.

Referenced by default_log_callback(), duvc::Error::description(), duvc_cam_mode_to_string(), duvc_cam_prop_to_string(), and duvc_vid_prop_to_string().

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◆ to_string() [3/5]

const char * duvc::to_string ( ErrorCode code )

Convert error code to string.

Parameters

code	Error code

Returns: Human-readable error description

Definition at line 10 of file result.cpp.

References DeviceBusy, DeviceNotFound, InvalidArgument, InvalidValue, NotImplemented, PermissionDenied, PropertyNotSupported, Success, and SystemError.

◆ to_string() [4/5]

const char * duvc::to_string ( LogLevel level )

Convert log level to string.

Parameters

level Log level

Returns: Log level name

Definition at line 20 of file logging.cpp.

References Critical, Debug, Error, Info, and Warning.

◆ to_string() [5/5]

const char * duvc::to_string ( VidProp prop )

Convert video property enum to string.

Parameters

prop	Video property to convert

Returns: Property name as C string

Definition at line 736 of file core.cpp.

References BacklightCompensation, Brightness, ColorEnable, Contrast, Gain, Gamma, Hue, Saturation, Sharpness, and WhiteBalance.

◆ to_utf8()

std::string duvc::to_utf8 ( const std::wstring & wstr )

Converts a wide string (UTF-16 on Windows) to a UTF-8 string.

Parameters

wstr	Wide string to convert (UTF-16 encoded on Windows)

Returns: UTF-8 encoded string

Definition at line 181 of file string_conversion.cpp.

Referenced by duvc_register_device_change_callback().

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◆ to_wstring() [1/4]

const wchar_t * duvc::to_wstring ( CamMode mode )

Convert camera mode enum to wide string.

Parameters

mode	Camera mode to convert

Returns: Mode name as wide C string (L"AUTO" or L"MANUAL")

Definition at line 772 of file core.cpp.

References Auto.

◆ to_wstring() [2/4]

const wchar_t * duvc::to_wstring ( CamProp prop )

Convert camera property enum to wide string.

Parameters

prop	Camera property to convert

Returns: Property name as wide C string

Definition at line 707 of file core.cpp.

References BacklightCompensation, DigitalZoom, DigitalZoomRelative, Exposure, ExposureRelative, Focus, FocusRelative, FocusSimple, Iris, IrisRelative, Lamp, Pan, PanRelative, PanTilt, PanTiltRelative, Privacy, Roll, RollRelative, ScanMode, Tilt, TiltRelative, Zoom, and ZoomRelative.

Referenced by duvc_find_device_by_path().

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◆ to_wstring() [3/4]

std::wstring duvc::to_wstring ( const std::string & str )

Converts a UTF-8 string to a wide string (UTF-16 on Windows)

Parameters

str	UTF-8 encoded string to convert

Returns: Wide string (UTF-16 encoded on Windows)

Definition at line 196 of file string_conversion.cpp.

◆ to_wstring() [4/4]

const wchar_t * duvc::to_wstring ( VidProp prop )

Convert video property enum to wide string.

Parameters

prop	Video property to convert

Returns: Property name as wide C string

Definition at line 752 of file core.cpp.

References BacklightCompensation, Brightness, ColorEnable, Contrast, Gain, Gamma, Hue, Saturation, Sharpness, and WhiteBalance.

◆ unregister_device_change_callback()

void duvc::unregister_device_change_callback ( )

Unregister device change callback.

Stops monitoring device changes and cleans up resources.

Definition at line 537 of file core.cpp.

References g_device_callback, g_device_notify, and g_notification_window.

Referenced by duvc_unregister_device_change_callback().

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◆ vidprop_to_dshow() [1/2]

static long duvc::vidprop_to_dshow ( VidProp p )

static

Definition at line 308 of file core.cpp.

References BacklightCompensation, Brightness, ColorEnable, Contrast, Gain, Gamma, Hue, Saturation, Sharpness, VideoProcAmp_BacklightCompensation, VideoProcAmp_Brightness, VideoProcAmp_ColorEnable, VideoProcAmp_Contrast, VideoProcAmp_Gain, VideoProcAmp_Gamma, VideoProcAmp_Hue, VideoProcAmp_Saturation, VideoProcAmp_Sharpness, VideoProcAmp_WhiteBalance, and WhiteBalance.

Referenced by duvc::DeviceConnection::get(), duvc::DeviceConnection::get_range(), and duvc::DeviceConnection::set().

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◆ vidprop_to_dshow() [2/2]

static long duvc::vidprop_to_dshow ( VidProp p )

static

Definition at line 185 of file connection_pool.cpp.

References BacklightCompensation, Brightness, ColorEnable, Contrast, Gain, Gamma, Hue, Saturation, Sharpness, VideoProcAmp_BacklightCompensation, VideoProcAmp_Brightness, VideoProcAmp_ColorEnable, VideoProcAmp_Contrast, VideoProcAmp_Gain, VideoProcAmp_Gamma, VideoProcAmp_Hue, VideoProcAmp_Saturation, VideoProcAmp_Sharpness, VideoProcAmp_WhiteBalance, and WhiteBalance.

◆ wide_to_utf8()

static std::string duvc::wide_to_utf8 ( const wchar_t * ws )

static

Definition at line 107 of file core.cpp.

Referenced by throw_hr().

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Variable Documentation

◆ g_cache_mutex

std::mutex duvc::g_cache_mutex

static

Definition at line 152 of file core.cpp.

Referenced by clear_connection_cache(), get_cached_connection(), and release_cached_connection().

◆ g_connection_cache

std::unordered_map<std::wstring, std::unique_ptr<DeviceConnection> > duvc::g_connection_cache

static

Definition at line 153 of file core.cpp.

Referenced by clear_connection_cache(), get_cached_connection(), and release_cached_connection().

◆ g_device_callback

DeviceChangeCallback duvc::g_device_callback = nullptr

static

Definition at line 147 of file core.cpp.

Referenced by device_notification_wndproc(), device_wndproc(), register_device_change_callback(), and unregister_device_change_callback().

◆ g_device_notify

HDEVNOTIFY duvc::g_device_notify = nullptr

static

Definition at line 149 of file core.cpp.

Referenced by register_device_change_callback(), and unregister_device_change_callback().

◆ g_log_callback

LogCallback duvc::g_log_callback = nullptr

static

Definition at line 17 of file logging.cpp.

Referenced by log_message(), and set_log_callback().

◆ g_log_mutex

std::mutex duvc::g_log_mutex

static

Definition at line 16 of file logging.cpp.

Referenced by get_log_level(), log_message(), set_log_callback(), and set_log_level().

◆ g_min_log_level

LogLevel duvc::g_min_log_level = LogLevel::Info

static

Definition at line 18 of file logging.cpp.

Referenced by get_log_level(), log_message(), and set_log_level().

◆ g_notification_window

HWND duvc::g_notification_window = nullptr

static

Definition at line 148 of file core.cpp.

Referenced by register_device_change_callback(), and unregister_device_change_callback().

Namespaces

Classes

Typedefs

Enumerations

Functions

Variables

Typedef Documentation

◆ DeviceChangeCallback

◆ LogCallback

Enumeration Type Documentation

◆ CamMode [1/2]

◆ CamMode [2/2]

◆ CamProp [1/2]

◆ CamProp [2/2]

◆ ErrorCode

◆ LogLevel

◆ VidProp [1/2]

◆ VidProp [2/2]

Function Documentation

◆ bind_to_filter() [1/2]

◆ bind_to_filter() [2/2]

◆ camprop_to_dshow() [1/2]

◆ camprop_to_dshow() [2/2]

◆ clear_connection_cache()

◆ create_dev_enum()

◆ create_notification_window()

◆ create_platform_interface()

◆ decode_hresult()

◆ decode_system_error()

◆ default_log_callback()

◆ device_notification_wndproc()

◆ device_wndproc()

◆ enum_video_devices()

◆ Err() [1/2]

◆ Err() [2/2]

◆ find_device_by_path()

◆ from_flag() [1/2]

◆ from_flag() [2/2]

◆ get_cached_connection()

◆ get_cam_ctrl() [1/2]

◆ get_cam_ctrl() [2/2]

◆ get_device_capabilities() [1/2]

◆ get_device_capabilities() [2/2]

◆ get_diagnostic_info()

◆ get_hresult_details()

◆ get_log_level()

◆ get_property_set() [1/2]

◆ get_property_set() [2/2]

◆ get_timestamp()

◆ get_vendor_property()

◆ get_vproc() [1/2]

◆ get_vproc() [2/2]

◆ is_device_connected()

◆ is_device_error()

◆ is_permission_error()

◆ is_same_device()

◆ list_devices()

◆ log_critical()

◆ log_debug()

◆ log_error()

◆ log_info()

◆ log_message()

◆ log_warning()

◆ Ok() [1/2]

◆ Ok() [2/2]

◆ open_camera() [1/3]

◆ open_camera() [2/3]

◆ open_camera() [3/3]

◆ open_device_filter()

◆ query_vendor_property_support()

◆ read_device_path()

◆ read_friendly_name()

◆ read_prop_bstr() [1/2]

◆ read_prop_bstr() [2/2]

◆ register_device_change_callback()

◆ register_device_notifications()

◆ register_notification_window_class()

◆ release_cached_connection()

◆ set_log_callback()

◆ set_log_level()