This class defines a video input device which is actually another video inpuit device. More...

#include <videoio.h>

Inheritance diagram for PVideoInputDeviceIndirect:

Collaboration diagram for PVideoInputDeviceIndirect:

Public Member Functions
	PVideoInputDeviceIndirect (PVideoInputDevice *device=NULL, bool autoDelete=true)

	~PVideoInputDeviceIndirect ()

virtual void	SetActualDevice (PVideoInputDevice *actualDevice, bool autoDelete=true)

virtual PVideoInputDevice *	GetActualDevice () const

virtual Comparison	Compare (const PObject &obj) const
	Compare the two PVideoFrameInfo and return their relative rank. More...

virtual void	PrintOn (ostream &strm) const
	Output the contents of the object to the stream. More...

virtual PBoolean	SetFrameSize (unsigned width, unsigned height)
	Set the frame size to be used. More...

virtual PBoolean	SetFrameSar (unsigned width, unsigned height)
	Set the Storage Aspect Ratio size to be used. More...

virtual PBoolean	SetFrameRate (unsigned rate)
	Set the video frame rate to be used on the device. More...

virtual PBoolean	SetColourFormat (const PString &colourFormat)
	Set the colour format to be used. More...

virtual void	SetResizeMode (ResizeMode mode)
	Set the resize mode to be used. More...

virtual PINDEX	CalculateFrameBytes () const
	Get the number of bytes of an image, given a particular width, height and colour format. More...

virtual bool	Parse (const PString &str)
	Parse a descriptor string for the video format. More...

virtual PString	GetDeviceName () const
	Get the device name of the open device. More...

virtual PStringArray	GetDeviceNames () const
	Get a list of all of the drivers available. More...

virtual PBoolean	OpenFull (const OpenArgs &args, PBoolean startImmediate=true)
	Open the device given the device name. More...

virtual PBoolean	Open (const PString &deviceName, PBoolean startImmediate=true)
	Open the device given the device name. More...

virtual PBoolean	IsOpen ()
	Determine if the device is currently open. More...

virtual PBoolean	Close ()
	Close the device. More...

virtual PBoolean	Start ()
	Start the video device I/O capture. More...

virtual PBoolean	Stop ()
	Stop the video device I/O capture. More...

virtual PBoolean	SetVideoFormat (VideoFormat videoFormat)
	Set the video format to be used. More...

virtual int	GetNumChannels ()
	Get the number of video channels available on the device. More...

virtual PStringArray	GetChannelNames ()
	Get the names of video channels available on the device. More...

virtual PBoolean	SetChannel (int channelNumber)
	Set the video channel to be used on the device. More...

virtual int	GetChannel () const
	Get the video channel to be used on the device. More...

virtual PBoolean	SetVFlipState (PBoolean newVFlipState)
	Set the video conversion vertical flip state. More...

virtual PBoolean	GetFrameSizeLimits (unsigned &minWidth, unsigned &minHeight, unsigned &maxWidth, unsigned &maxHeight)
	Get the minimum & maximum size of a frame on the device. More...

virtual PBoolean	SetNearestFrameSize (unsigned width, unsigned height)
	Set the nearest available frame size to be used. More...

virtual bool	SetFrameInfoConverter (const PVideoFrameInfo &info)
	Set the frame info to be used, trying converters if available. More...

virtual PBoolean	SetColourFormatConverter (const PString &colourFormat)
	Set the colour format to be used, trying converters if available. More...

virtual PBoolean	SetFrameSizeConverter (unsigned width, unsigned height, ResizeMode resizeMode=eMaxResizeMode)
	Set the frame size to be used, trying converters if available. More...

virtual int	GetLastError () const
	Get the last error code. More...

virtual bool	GetAttributes (Attributes &attributes)
	Get video attributes. More...

virtual bool	SetAttributes (const Attributes &attributes)
	Set video attributes. More...

virtual PBoolean	SetVideoChannelFormat (int channelNumber, VideoFormat videoFormat)
	Set VideoFormat and VideoChannel in one ioctl. More...

virtual bool	GetDeviceCapabilities (Capabilities *capabilities) const
	Retrieve a list of Device Capabilities. More...

virtual PBoolean	IsCapturing ()
	Determine if the video device I/O capture is in progress. More...

virtual bool	FlowControl (const void *flowData)
	Pass data to the inputdevice for flowControl determination. More...

virtual bool	SetCaptureMode (unsigned mode)
	Set the capture modes for implementations that support them. More...

virtual int	GetCaptureMode () const
	Returns the current capture mode. More...

virtual bool	SetControl (PVideoControlInfo::Types type, int value, ControlMode mode)

Public Member Functions inherited from PVideoInputDevice
	~PVideoInputDevice ()
	Create a new video input device. More...

virtual PBoolean	CanCaptureVideo () const
	Is the device a camera, and obtain video. More...

bool	GetFrame (BYTE *buffer, PINDEX &bytesReturned, bool &keyFrame, bool wait=true)
	Grab a frame. More...

virtual PBoolean	GetFrame (PBYTEArray &frame)

virtual PBoolean	GetFrame (PBYTEArray &frame, unsigned &width, unsigned &height)

bool	GetFrameData (BYTE buffer, PINDEX bytesReturned, bool &keyFrame)
	For backward compatibility. More...

bool	GetFrameData (BYTE buffer, PINDEX bytesReturned=NULL)
	For backward compatibility. More...

bool	GetFrameDataNoDelay (BYTE buffer, PINDEX bytesReturned, bool &keyFrame)
	For backward compatibility. More...

bool	GetFrameDataNoDelay (BYTE buffer, PINDEX bytesReturned=NULL)
	For backward compatibility. More...

virtual const PVideoControlInfo &	GetControlInfo (PVideoControlInfo::Types type) const

Public Member Functions inherited from PVideoDevice
virtual	~PVideoDevice ()
	Delete structures created by PVideoDevice();. More...

	P_DECLARE_STREAMABLE_ENUM (VideoFormat, PAL, NTSC, SECAM, Auto)

virtual VideoFormat	GetVideoFormat () const
	Get the video format being used. More...

virtual PBoolean	GetVFlipState ()
	Get the video conversion vertical flip state. More...

virtual PBoolean	GetFrameSize (unsigned &width, unsigned &height) const
	Get the frame size being used. More...

virtual PString	GetColourFormat () const
	Get the colour format being used. More...

virtual PINDEX	GetMaxFrameBytes ()
	Get the maximum frame size in bytes. More...

virtual void	SetPreferredColourFormat (const PString &colourFmt)
	Set preferred native colour format from video capture device. More...

virtual PString	GetPreferredColourFormat ()
	Get preferred native colour format from video capture device. More...

Public Member Functions inherited from PVideoFrameInfo
	P_DECLARE_ENUM_EX (ResizeMode, eMaxResizeMode, eScale, 0, eCropCentre, eCropTopLeft, eScaleKeepAspect)

	PVideoFrameInfo ()
	Construct video frame information. More...

	PVideoFrameInfo (unsigned frameWidth, unsigned frameHeight, const PString &colourFormat=PVideoFrameInfo::YUV420P(), unsigned frameRate=15, ResizeMode resizeMode=eScale)

virtual unsigned	GetFrameWidth () const
	Get the width of the frame being used. More...

virtual unsigned	GetFrameHeight () const
	Get the height of the frame being used. More...

virtual PBoolean	GetSarSize (unsigned &width, unsigned &height) const
	Get the Storage Aspect Ratio size being used. More...

virtual unsigned	GetSarWidth () const
	Get the width of the Storage Aspect Ratio being used. More...

virtual unsigned	GetSarHeight () const
	Get the height of the Storage Aspect Ratio being used. More...

virtual unsigned	GetFrameRate () const
	Get the video frame rate used on the device. More...

virtual ResizeMode	GetResizeMode () const
	Get the resize mode to be used. More...

Public Member Functions inherited from PObject
__inline unsigned	GetTraceContextIdentifier () const
	Get PTRACE context identifier. More...

__inline void	SetTraceContextIdentifier (unsigned id)

__inline void	SetTraceContextIdentifier (const PObject &obj)

__inline void	SetTraceContextIdentifier (const PObject *obj)

__inline void	CopyTraceContextIdentifier (PObject &obj) const

__inline void	CopyTraceContextIdentifier (PObject *obj) const

virtual	~PObject ()

__inline const char *	GetClass () const

__inline bool	IsClass (const char *name) const

__inline const PObject *	PTraceObjectInstance () const

virtual PObject *	Clone () const
	Create a copy of the class on the heap. More...

template<class CLS >
CLS *	CloneAs () const
	As for Clone() but converts to specified type. More...

virtual PINDEX	HashFunction () const
	This function yields a hash value required by the `PDictionary` class. More...

virtual Comparison	CompareObjectMemoryDirect (const PObject &obj) const
	Determine the byte wise comparison of two objects. More...

bool	operator== (const PObject &obj) const
	Compare the two objects. More...

bool	operator!= (const PObject &obj) const
	Compare the two objects. More...

bool	operator< (const PObject &obj) const
	Compare the two objects. More...

bool	operator> (const PObject &obj) const
	Compare the two objects. More...

bool	operator<= (const PObject &obj) const
	Compare the two objects. More...

bool	operator>= (const PObject &obj) const
	Compare the two objects. More...

virtual void	ReadFrom (istream &strm)
	Input the contents of the object from the stream. More...

Protected Member Functions
virtual bool	InternalGetFrameData (BYTE *buffer, PINDEX &bytesReturned, bool &keyFrame, bool wait)

	PDECLARE_MUTEX (m_actualDeviceMutex)

Protected Member Functions inherited from PVideoDevice
	PVideoDevice ()
	Create a new video device (input or output). More...

PINDEX	GetMaxFrameBytesConverted (PINDEX rawFrameBytes) const

PString	GetDeviceNameFromOpenArgs (const OpenArgs &args) const

PString	ParseDeviceNameTokenString (const char token, const char defaultValue)

int	ParseDeviceNameTokenInt (const char *token, int defaultValue)

uint64_t	ParseDeviceNameTokenUnsigned (const char *token, uint64_t defaultValue)

Protected Member Functions inherited from PObject
	PObject ()
	Constructor for PObject, made protected so cannot ever create one on its own. More...

Protected Attributes
PVideoInputDevice *	m_actualDevice

bool	m_autoDeleteActualDevice

Protected Attributes inherited from PVideoInputDevice
PVideoControlInfo	m_controlInfo [PVideoControlInfo::NumTypes]

Protected Attributes inherited from PVideoDevice
PCaselessString	m_deviceName

int	m_lastError

VideoFormat	m_videoFormat

int	m_channelNumber

PString	m_preferredColourFormat

bool	m_nativeVerticalFlip

PColourConverter *	m_converter

PBYTEArray	m_frameStore

Protected Attributes inherited from PVideoFrameInfo
unsigned	m_frameWidth

unsigned	m_frameHeight

unsigned	m_sarWidth

unsigned	m_sarHeight

unsigned	m_frameRate

PString	m_colourFormat

ResizeMode	m_resizeMode

Protected Attributes inherited from PObject
unsigned	m_traceContextIdentifier

Additional Inherited Members
Public Types inherited from PVideoInputDevice
enum	ControlMode { AutomaticControl, AbsoluteControl, RelativeControl, ResetControl }

Public Types inherited from PVideoFrameInfo
enum	StandardSizes { SQCIFWidth = 128, SQCIFHeight = 96, QCIFWidth = 176, QCIFHeight = 144, CIFWidth = 352, CIFHeight = 288, CIF4Width = 704, CIF4Height = 576, CIF16Width = 1408, CIF16Height = 1152, HD480Width = 704, HD480Height = 480, i480Width = 704, i480Height = 480, HD720Width = 1280, HD720Height = 720, p720Width = 1280, p720Height = 720, HD1080Width = 1920, HD1080Height = 1080, i1080Width = 1920, i1080Height = 1080, HDTVWidth = 1920, HDTVHeight = 1080, MaxWidth = 1920, MaxHeight = 1200 }

Public Types inherited from PObject
enum	Comparison { LessThan = -1, EqualTo = 0, GreaterThan = 1 }
	Result of the comparison operation performed by the `Compare()` function. More...

Static Public Member Functions inherited from PVideoInputDevice
static PStringArray	GetDriverNames (PPluginManager *pluginMgr=NULL)
	Get the list of available video input drivers (plug-ins) More...

static PStringArray	GetDriversDeviceNames (const PString &driverName, PPluginManager *pluginMgr=NULL)
	Get video input devices that correspond to the specified driver name. More...

static PVideoInputDevice *	CreateDevice (const PString &driverName, PPluginManager *pluginMgr=NULL)
	Create the video input device that corresponds to the specified driver name. More...

static PVideoInputDevice *	CreateDeviceByName (const PString &deviceName, const PString &driverName=PString::Empty(), PPluginManager *pluginMgr=NULL)

static PVideoInputDevice *	CreateOpenedDevice (const PString &driverName, const PString &deviceName, bool startImmediate=true, PPluginManager *pluginMgr=NULL)
	Create an opened video input device that corresponds to the specified names. More...

static PVideoInputDevice *	CreateOpenedDevice (const PString &deviceName, bool startImmediate=true, PPluginManager *pluginMgr=NULL)

static PVideoInputDevice *	CreateOpenedDevice (const OpenArgs &args, bool startImmediate=true)
	Create an opened video output device that corresponds to the specified arguments. More...

static bool	GetDeviceCapabilities (const PString &deviceName, Capabilities capabilities, PPluginManager pluginMgr=NULL)
	Retrieve a list of Device Capabilities for particular device. More...

static bool	GetDeviceCapabilities (const PString &deviceName, const PString &driverName, Capabilities caps, PPluginManager pluginMgr=NULL)
	Retrieve a list of Device Capabilities for a particular driver. More...

static PBoolean	GetInputDeviceCapabilities (const PString &, Capabilities *)

Static Public Member Functions inherited from PVideoFrameInfo
static const PString &	YUV420P ()

static PINDEX	CalculateFrameBytes (unsigned width, unsigned height, const PString &colourFormat=PVideoFrameInfo::YUV420P())

static bool	ParseSize (const PString &str, unsigned &width, unsigned &height)
	Parse the standard size string names. More...

static PString	AsString (unsigned width, unsigned height)
	Get a width/height as a standard size string name. More...

static PStringArray	GetSizeNames ()
	Get all "known" image size names. More...

Static Public Member Functions inherited from PObject
static __inline void	CopyTraceContextIdentifier (PObject &to, const PObject &from)

static __inline void	CopyTraceContextIdentifier (PObject &to, const PObject *from)

static __inline void	CopyTraceContextIdentifier (PObject *to, const PObject &from)

static __inline void	CopyTraceContextIdentifier (PObject to, const PObject from)

static __inline const char *	Class ()

static __inline const PObject *	PTraceObjectInstance (const char *)

static __inline const PObject *	PTraceObjectInstance (const PObject *obj)

template<typename T >
static Comparison	Compare2 (T v1, T v2)
	Compare two types, returning Comparison type. More...

static Comparison	InternalCompareObjectMemoryDirect (const PObject obj1, const PObject obj2, PINDEX size)
	Internal function caled from CompareObjectMemoryDirect() More...

Detailed Description

This class defines a video input device which is actually another video inpuit device.

Constructor & Destructor Documentation

PVideoInputDeviceIndirect::PVideoInputDeviceIndirect	(	PVideoInputDevice *	device = `NULL`,
		bool	autoDelete = `true`
	)

inlineexplicit

PVideoInputDeviceIndirect::~PVideoInputDeviceIndirect ( )

inline

References SetActualDevice().

Member Function Documentation

virtual PINDEX PVideoInputDeviceIndirect::CalculateFrameBytes ( ) const

virtual

Get the number of bytes of an image, given a particular width, height and colour format.

Reimplemented from PVideoFrameInfo.

virtual PBoolean PVideoInputDeviceIndirect::Close ( )

virtual

Close the device.

Reimplemented from PVideoInputDevice.

virtual Comparison PVideoInputDeviceIndirect::Compare ( const PObject & obj ) const

virtual

Compare the two PVideoFrameInfo and return their relative rank.

This ranking is by the relative area of the frame resolution, and frame rate if resolution equal. The final check for equality is on the colourFormat. The SAR and resize mode take no part.

Returns: LessThan, EqualTo or GreaterThan according to the relative rank of the objects.

Reimplemented from PVideoFrameInfo.

virtual bool PVideoInputDeviceIndirect::FlowControl ( const void * flowData )

virtual

Pass data to the inputdevice for flowControl determination.

Reimplemented from PVideoInputDevice.

virtual PVideoInputDevice* PVideoInputDeviceIndirect::GetActualDevice ( ) const

virtual

virtual bool PVideoInputDeviceIndirect::GetAttributes ( Attributes & attributes )

virtual

Get video attributes.

Reimplemented from PVideoDevice.

virtual int PVideoInputDeviceIndirect::GetCaptureMode ( ) const

virtual

Returns the current capture mode.

See SetCaptureMode() for more details. A return value of -1 indicates an error or the mode is not supported.

Reimplemented from PVideoInputDevice.

virtual int PVideoInputDeviceIndirect::GetChannel ( ) const

virtual

Get the video channel to be used on the device.

Default behaviour returns the value of the channelNumber variable.

Reimplemented from PVideoDevice.

virtual PStringArray PVideoInputDeviceIndirect::GetChannelNames ( )

virtual

Get the names of video channels available on the device.

Reimplemented from PVideoDevice.

virtual bool PVideoInputDeviceIndirect::GetDeviceCapabilities ( Capabilities * capabilities ) const

virtual

Retrieve a list of Device Capabilities.

Reimplemented from PVideoInputDevice.

virtual PString PVideoInputDeviceIndirect::GetDeviceName ( ) const

virtual

Get the device name of the open device.

Reimplemented from PVideoDevice.

virtual PStringArray PVideoInputDeviceIndirect::GetDeviceNames ( ) const

virtual

Get a list of all of the drivers available.

Implements PVideoDevice.

virtual PBoolean PVideoInputDeviceIndirect::GetFrameSizeLimits	(	unsigned &	minWidth,
		unsigned &	minHeight,
		unsigned &	maxWidth,
		unsigned &	maxHeight
	)

virtual

Get the minimum & maximum size of a frame on the device.

Default behaviour returns the value 1 to UINT_MAX for both and returns false.

Reimplemented from PVideoDevice.

virtual int PVideoInputDeviceIndirect::GetLastError ( ) const

virtual

Get the last error code.

This is a platform dependent number.

Reimplemented from PVideoDevice.

virtual int PVideoInputDeviceIndirect::GetNumChannels ( )

virtual

Get the number of video channels available on the device.

Default behaviour returns 1.

Reimplemented from PVideoDevice.

virtual bool PVideoInputDeviceIndirect::InternalGetFrameData	(	BYTE *	buffer,
		PINDEX &	bytesReturned,
		bool &	keyFrame,
		bool	wait
	)

protectedvirtual

Implements PVideoInputDevice.

virtual PBoolean PVideoInputDeviceIndirect::IsCapturing ( )

virtual

Determine if the video device I/O capture is in progress.

Implements PVideoInputDevice.

virtual PBoolean PVideoInputDeviceIndirect::IsOpen ( )

virtual

Determine if the device is currently open.

Implements PVideoDevice.

virtual PBoolean PVideoInputDeviceIndirect::Open	(	const PString &	deviceName,
		PBoolean	startImmediate = `true`
	)

virtual

Open the device given the device name.

Implements PVideoInputDevice.

virtual PBoolean PVideoInputDeviceIndirect::OpenFull	(	const OpenArgs &	args,
		PBoolean	startImmediate = `true`
	)

virtual

Open the device given the device name.

Reimplemented from PVideoDevice.

virtual bool PVideoInputDeviceIndirect::Parse ( const PString & str )

virtual

Parse a descriptor string for the video format.

This is of the form [fmt ':' ] size [ '@' rate][ '/' crop ]. The size component is as for the ParseSize() function.

The fmt string is the colour format such as "RGB32", "YUV420P" etc.

The rate field is a simple integer from 1 to 100.

The crop field is one of "scale", "resize" (synonym for "scale"), "centre", "center", "topleft" or "crop" (synonym for "topleft").

Note no spaces are allowed in the descriptor.

Reimplemented from PVideoFrameInfo.

PVideoInputDeviceIndirect::PDECLARE_MUTEX ( m_actualDeviceMutex )

protected

virtual void PVideoInputDeviceIndirect::PrintOn ( ostream & strm ) const

virtual

Output the contents of the object to the stream.

The exact output is dependent on the exact semantics of the descendent class. This is primarily used by the standard operator<< function.

The default behaviour is to print the class name.

Reimplemented from PVideoDevice.

virtual void PVideoInputDeviceIndirect::SetActualDevice	(	PVideoInputDevice *	actualDevice,
		bool	autoDelete = `true`
	)

virtual

Referenced by ~PVideoInputDeviceIndirect().

virtual bool PVideoInputDeviceIndirect::SetAttributes ( const Attributes & attributes )

virtual

Set video attributes.

Reimplemented from PVideoDevice.

virtual bool PVideoInputDeviceIndirect::SetCaptureMode ( unsigned mode )

virtual

Set the capture modes for implementations that support them.

For example with Video For Windows, this is used to select picture (0) or video (1) modes.

In picture-mode the implementation requests a single frame from the connected camera device. The camera device then does nothing until the frame has been processed and the next is requested.

In video-mode the camera continuously sends new frames.

The default implementation does nothing but returns false.

Reimplemented from PVideoInputDevice.

virtual PBoolean PVideoInputDeviceIndirect::SetChannel ( int channelNumber )

virtual

Set the video channel to be used on the device.

The channel number is an integer from 0 to GetNumChannels()-1. The special value of -1 will find the first working channel number.

Default behaviour sets the value of the channelNumber variable and then returns true.

Reimplemented from PVideoDevice.

virtual PBoolean PVideoInputDeviceIndirect::SetColourFormat ( const PString & colourFormat )

virtual

Set the colour format to be used.

Default behaviour sets the value of the colourFormat variable and then returns true if not an empty string.

Reimplemented from PVideoFrameInfo.

virtual PBoolean PVideoInputDeviceIndirect::SetColourFormatConverter ( const PString & colourFormat )

virtual

Set the colour format to be used, trying converters if available.

This function will set the colour format on the device to one that is compatible with a registered converter, and install that converter so that the correct format is used.

Reimplemented from PVideoDevice.

virtual bool PVideoInputDeviceIndirect::SetControl	(	PVideoControlInfo::Types	type,
		int	value,
		ControlMode	mode
	)

virtual

Reimplemented from PVideoInputDevice.

virtual bool PVideoInputDeviceIndirect::SetFrameInfoConverter ( const PVideoFrameInfo & info )

virtual

Set the frame info to be used, trying converters if available.

This function will simply call SetColourFormatConverter(), SetFrameSizeConverter() and SetFrameRate().

Reimplemented from PVideoDevice.

virtual PBoolean PVideoInputDeviceIndirect::SetFrameRate ( unsigned rate )

virtual

Set the video frame rate to be used on the device.

Default behaviour sets the value of the frameRate variable and then returns true.

Reimplemented from PVideoFrameInfo.

virtual PBoolean PVideoInputDeviceIndirect::SetFrameSar	(	unsigned	width,
		unsigned	height
	)

virtual

Set the Storage Aspect Ratio size to be used.

Default behaviour sets the sarWidth and sarHeight variables and returns true.

Reimplemented from PVideoFrameInfo.

virtual PBoolean PVideoInputDeviceIndirect::SetFrameSize	(	unsigned	width,
		unsigned	height
	)

virtual

Set the frame size to be used.

Note that devices may not be able to produce the requested size, and this function will fail. See SetFrameSizeConverter().

Default behaviour sets the frameWidth and frameHeight variables and then sets the converter sizes.

Reimplemented from PVideoDevice.

virtual PBoolean PVideoInputDeviceIndirect::SetFrameSizeConverter	(	unsigned	width,
		unsigned	height,
		ResizeMode	resizeMode = `eMaxResizeMode`
	)

virtual

Set the frame size to be used, trying converters if available.

If the device does not support the size, a set of alternate resolutions are attempted. A converter is setup if possible.

Reimplemented from PVideoDevice.

virtual PBoolean PVideoInputDeviceIndirect::SetNearestFrameSize	(	unsigned	width,
		unsigned	height
	)

virtual

Set the nearest available frame size to be used.

Note that devices may not be able to produce the requested size, so this function picks the nearest available size.

Default behaviour simply calls SetFrameSize().

Reimplemented from PVideoInputDevice.

virtual void PVideoInputDeviceIndirect::SetResizeMode ( ResizeMode mode )

virtual

Set the resize mode to be used.

Reimplemented from PVideoFrameInfo.

virtual PBoolean PVideoInputDeviceIndirect::SetVFlipState ( PBoolean newVFlipState )

virtual

Set the video conversion vertical flip state.

Default action is to return false.

Reimplemented from PVideoDevice.

virtual PBoolean PVideoInputDeviceIndirect::SetVideoChannelFormat	(	int	channelNumber,
		VideoFormat	videoFormat
	)

virtual

Set VideoFormat and VideoChannel in one ioctl.

Reimplemented from PVideoDevice.

virtual PBoolean PVideoInputDeviceIndirect::SetVideoFormat ( VideoFormat videoFormat )

virtual

Set the video format to be used.

Default behaviour sets the value of the videoFormat variable and then returns true.

Reimplemented from PVideoDevice.

virtual PBoolean PVideoInputDeviceIndirect::Start ( )

virtual

Start the video device I/O capture.

Implements PVideoDevice.

virtual PBoolean PVideoInputDeviceIndirect::Stop ( )

virtual

Stop the video device I/O capture.

Implements PVideoDevice.

Member Data Documentation

PVideoInputDevice* PVideoInputDeviceIndirect::m_actualDevice

protected

bool PVideoInputDeviceIndirect::m_autoDeleteActualDevice

protected

The documentation for this class was generated from the following file:

videoio.h

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation