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Developer Documentation |
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Centre for Vision, Speech & Signal Processing |
Comments:
Class is templated on pixel type, not image type
Parent Classes:
Derived Classes:
Variables:
- ImageC buff;
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Methods:
- VideoInC()
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Default constructor.
Creates an invalid handle.
- VideoInC(const FilenameC & fn,const StringC & fmt = "",BooleanT verbose = FALSE)
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Constructor.
- ImageRectangleC Rectangle() const
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Get Size of working rectangle.
- BooleanT IsOk() const
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Is current image valid?
- BooleanT Next(IntT but = 0)
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Goto next but "but" image in stream.
Return FALSE if none.
- ImageC<PixelTypeT> & Data()
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Access image at head of stream.
- IndexC ImageNo() const
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Current frame no.
Note, this will only return valid information directly after a Next()
operation. Otherwise this function will return the frame no, of the image
BEFORE the "Next()" to be read (assuming "but" == 0).
- BooleanT Seek(UIntT off)
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Seek to location in stream.
- void Rewind()
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Rewinds video stream to the beginning
- const DPISPortC<ImageC<PixelTypeT>> & operator=(const DPISPortC<ImageC<PixelTypeT>> & obj)
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Assigment.
- DPIPortBodyC<ImageC<PixelTypeT>> & Body()
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Access body.
- const DPIPortBodyC<ImageC<PixelTypeT>> & Body() const
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Access body.
- ImageC<PixelTypeT> Get()
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Get next piece of data.
- BooleanT Get(ImageC<PixelTypeT> & buff)
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Try and get next piece of data.
If none, return FALSE.
else put data into buff.
- IntT GetArray(SArray1dC<ImageC<PixelTypeT>> & data)
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Get an array of data from stream.
returns the number of elements processed.
- BooleanT Seek(UIntT off)
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Seek to location in stream.
Returns FALSE, if seek failed. (Maybe because its
not implemented.)
if an error occurered (Seek returned False) then stream
position will not be changed.
- BooleanT DSeek(IntT off)
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Delta Seek, goto location relative to the current one.
The default behavour of this functions is :
Do some error checking then:
Seek((UIntT)((IntT) Tell() + off));
if an error occurered (DSeek returned False) then stream
position will not be changed.
- UIntT Tell() const
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Find current location in stream.
Defined as the index of the next object to be written or read.
May return ((UIntT) (-1)) if not implemented.
- UIntT Size() const
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Find the total size of the stream. (assuming it starts from 0)
May return ((UIntT) (-1)) if not implemented.
- UIntT Start() const
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Find the offset where the stream begins, normally zero.
Defaults to 0
- DPSeekCtrlBodyC & Body()
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Access body class.
- const DPSeekCtrlBodyC & Body() const
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Access body class.
- DPIPortBaseBodyC & Body()
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Access body.
- const DPIPortBaseBodyC & Body() const
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Access body.
- const type_info & InputType() const
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Get type of input port.
- BooleanT IsGetReady() const
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Is valid data.
- BooleanT IsGetEOS() const
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Is valid data.
- BooleanT Discard()
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Discard the next input datum.
returns true on success.
- const DPEntityC & operator=(const DPEntityC & dat)
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Assignment.
- DPEntityBodyC & Body()
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Access body.
- const DPEntityBodyC & Body() const
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Access body.
- BooleanT Save(ostream & out) const
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- DPPortBodyC & Body()
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Access body.
- const DPPortBodyC & Body() const
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Access body.
- BooleanT IsAsync() const
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Does port work asynchronously ??
- DPPortC ConnectedTo() const
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Is this port connected to another ?
If not returns invalid handle.
- BooleanT GetAttr(const StringC & attrName,StringC & attrValue)
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Get a stream attribute.
Returns false if the attribute name is unknown.
This is for handling stream attributes such as frame rate, and compression ratios.
- BooleanT SetAttr(const StringC & attrName,const StringC & attrValue)
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Set a stream attribute.
Returns false if the attribute name is unknown.
This is for handling stream attributes such as frame rate, and compression ratios.
- RCAbstractC Abstract()
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Create an abstract handle to this object.
- BooleanT IsHandleType(const DT &) const
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Is handle of given type ?
- void CheckHandleType(const DT & dummy) const
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Check handle type. Throw an expception if not.
- BooleanT Save(ostream & out) const
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Save to ostream.
- RCHandleAC<DPEntityBodyC> Copy() const
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Creat a deep copy of this object.
protected:
- const DPEntityC & operator=(const DPEntityC & dat)
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Assignment.
- DPEntityBodyC & Body()
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Access body.
- const DPEntityBodyC & Body() const
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Access body.
- BooleanT Save(ostream & out) const
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- BooleanT IsValid() const
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Check its a valid handle.
- BooleanT IsValidObject() const
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Check its a valid handle, and that the object is pointed to is also valid.
- RCHandleC<DPEntityBodyC> & operator=(const RCHandleC<DPEntityBodyC> & oth)
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Assignment.
- BooleanT operator==(const RCHandleC<DPEntityBodyC> & oth) const
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Comparison operator.
- BooleanT operator!=(const RCHandleC<DPEntityBodyC> & oth) const
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Comparison operator.
- UIntT Hash() const
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Hash function.x
- BooleanT IsConst() const
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Is object constant ?
- BooleanT IsNotConst() const
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Is object not constant ?
- void SetConst(void) const
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Lock the object.
This is const as a convience though it actual modified the
object, often object you wish to ensure are constant already
have const set.
protected:
- void Invalidate()
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Turn this into an invalid handle.
- DPEntityBodyC & Body()
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Direct access to body.
- const DPEntityBodyC & Body() const
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Constant access to body.
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Programmer:Bill Christmas, Documentation by CxxDoc: Tue Mar 20 10:49:27 2001
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