RAM cached and tiled raster band. More...

#include <CachedBand.h>

Inheritance diagram for te::mem::CachedBand:

Public Member Functions
	CachedBand (CachedBandBlocksManager &blocksManager, std::size_t idx)
	Constructor. More...

Band &	callOperator (std::complex< double >(*f)(std::complex< double >, std::complex< double >), Band &rhs)
	It calls a parameter function f to apply in all pixels from two bands, e.g. pixel = f(lhs, rhs);. More...

Band &	callOperator (std::complex< double >(*f)(std::complex< double >, std::complex< double >), std::complex< double > &cvalue)
	It calls a parameter function f to apply in all pixels from the band, e.g. pixel = f(lhs, rhs);. More...

virtual int	getBlockSize () const
	It returns the number of bytes ocuppied by a data block. More...

virtual std::map< double, unsigned >	getHistogramI (unsigned int rs=0, unsigned int cs=0, unsigned int rf=0, unsigned int cf=0, unsigned int b=0) const
	It computes and returns the histogram occurring values (imaginary part) in a window of the band. More...

virtual std::map< double, unsigned >	getHistogramR (unsigned int rs=0, unsigned int cs=0, unsigned int rf=0, unsigned int cf=0, unsigned int b=0) const
	It computes and returns the histogram occurring values (real part) in a window of the band. More...

void	getIValue (unsigned int c, unsigned int r, double &value) const
	Returns the imaginary attribute value in a complex band of a cell. More...

virtual std::complex< double >	getMaxValue (bool readall=false, unsigned int rs=0, unsigned int cs=0, unsigned int rf=0, unsigned int cf=0) const
	It computes and returns the maximum occurring value in a window of the band. More...

virtual std::complex< double >	getMeanValue (unsigned int rs=0, unsigned int cs=0, unsigned int rf=0, unsigned int cf=0) const
	It computes and returns the mean of the occurring values in a window of the band. More...

virtual std::complex< double >	getMinValue (bool readall=false, unsigned int rs=0, unsigned int cs=0, unsigned int rf=0, unsigned int cf=0) const
	It computes and returns the minimum occurring value in a window of the band. More...

std::complex< double >	getOffsetValue () const
	It returns the offset values (real and imaginary) to be applied to the band. More...

BandProperty *	getProperty ()
	Returns the band property. More...

const BandProperty *	getProperty () const
	Returns the band property. More...

te::rst::Raster *	getRaster () const
	Returns the associated raster. More...

std::complex< double >	getScaleValue () const
	It returns the scale values (real and imaginary) to be applied to the band. More...

virtual std::complex< double >	getStdValue (unsigned int rs=0, unsigned int cs=0, unsigned int rf=0, unsigned int cf=0) const
	It computes and returns the standard deviation of the occurring values in a window of the band. More...

void	getValue (unsigned int c, unsigned int r, double &value) const
	Returns the cell attribute value. More...

virtual void	getValue (unsigned int c, unsigned int r, std::complex< double > &value) const
	Returns the imaginary attribute value in a complex band of a cell. More...

virtual Band &	operator*= (Band &rhs)
	It returns the band product (pixel by pixel). More...

virtual Band &	operator*= (std::complex< double > &cvalue)
	It returns the product of a constant value to all pixels in the band. More...

virtual Band &	operator+= (Band &rhs)
	It returns the band sum (pixel by pixel). More...

virtual Band &	operator+= (std::complex< double > &cvalue)
	It returns the sum of a constant value to all pixels in the band. More...

virtual Band &	operator-= (Band &rhs)
	It returns the band subtraction (pixel by pixel). More...

virtual Band &	operator-= (std::complex< double > &cvalue)
	It returns the difference from all pixels in the band to a constant value (pixel - constant). More...

virtual Band &	operator/= (Band &rhs)
	It returns the band division (pixel by pixel). More...

virtual Band &	operator/= (std::complex< double > &cvalue)
	It returns the division of all pixels in the band by a constant value (pixel / constant). More...

void	read (int x, int y, void *buffer) const
	It reads a data block to the specified buffer. More...

void *	read (int x, int y)
	It reads and returns a data block. More...

void	setIValue (unsigned int c, unsigned int r, const double value)
	Sets the imaginary attribute value in a complex band of a cell. More...

void	setOffsetValue (const std::complex< double > o)
	Sets the offset values (real and imaginary) to be applied to the band. More...

void	setScaleValue (const std::complex< double > s)
	Sets the scale values (real and imaginary) to be applied to the band. More...

void	setValue (unsigned int c, unsigned int r, const double value)
	Sets the cell attribute value. More...

virtual void	setValue (unsigned int c, unsigned int r, const std::complex< double > &value)
	Sets the imaginary attribute value in a complex band of a cell. More...

void	write (int x, int y, void *buffer)
	It writes a data block from the specified buffer. More...

	~CachedBand ()

Protected Attributes
unsigned int	m_blkHeight
	The current band blocks height. More...

unsigned int	m_blkSizeBytes
	The blocks size (bytes);. More...

unsigned int	m_blkWidth
	The current band blocks width. More...

CachedBandBlocksManager &	m_blocksManager
	The external blocks manager reference. More...

te::rst::GetBufferValueFPtr	m_getBuff
	A pointer to a function that helps to extract a double or complex value from a specific buffer data type (char, int16, int32, float, ...). More...

te::rst::GetBufferValueFPtr	m_getBuffI
	A pointer to a function that helps to extract the imaginary part value from a specific buffer data type (cint16, cint32, cfloat, cdouble). More...

std::size_t	m_idx
	The band index. More...

BandProperty *	m_property
	The band information. More...

te::rst::SetBufferValueFPtr	m_setBuff
	A pointer to a function that helps to insert a double or complex value into a specific buffer data type (char, int16, int32, float, ...). More...

te::rst::SetBufferValueFPtr	m_setBuffI
	A pointer to a function that helps to insert the imaginary part value into a specific buffer data type (cint16, cint32, cfloat, cdouble). More...

unsigned int	m_setGetBlkX

unsigned int	m_setGetBlkY

void *	m_setGetBufPtr

unsigned int	m_setGetPos

Static Protected Attributes
static CachedBandBlocksManager	dummyBlocksManager
	A global static dummy blocks manager. More...

Private Member Functions
	CachedBand ()

Detailed Description

RAM cached and tiled raster band.

A cache adaptor to an external existent raster band that must always be avaliable.

Definition at line 53 of file CachedBand.h.

Constructor & Destructor Documentation

te::mem::CachedBand::CachedBand	(	CachedBandBlocksManager &	blocksManager,
		std::size_t	idx
	)

Constructor.

Parameters

blocksManager	The blocks manager where to read/write data.
idx	The band index.

te::mem::CachedBand::~CachedBand ( )

te::mem::CachedBand::CachedBand ( )

private

Member Function Documentation

Band& te::rst::Band::callOperator	(	std::complex< double >(*)(std::complex< double >, std::complex< double >)	f,
		Band &	rhs
	)

inherited

It calls a parameter function f to apply in all pixels from two bands, e.g. pixel = f(lhs, rhs);.

Parameters

(*f)	a function with the signature complex<double>(*f)(complex<double>, complex<double>)
rhs	The rhs band to apply the function.

Returns: The resultant band.

Band& te::rst::Band::callOperator	(	std::complex< double >(*)(std::complex< double >, std::complex< double >)	f,
		std::complex< double > &	cvalue
	)

inherited

It calls a parameter function f to apply in all pixels from the band, e.g. pixel = f(lhs, rhs);.

Parameters

(*f)	a function with the signature complex<double>(*f)(complex<double>, complex<double>)
cvalue	The constant value that will work with the generic function.

Returns: The resultant band.

virtual int te::rst::Band::getBlockSize ( ) const

virtualinherited

It returns the number of bytes ocuppied by a data block.

Reimplemented in te::mem::Band.

Referenced by te::rst::BandIteratorWindow< T >::BandIteratorWindow().

virtual std::map<double, unsigned> te::rst::Band::getHistogramI	(	unsigned int	rs = `0`,
		unsigned int	cs = `0`,
		unsigned int	rf = `0`,
		unsigned int	cf = `0`,
		unsigned int	b = `0`
	)		const

virtualinherited

It computes and returns the histogram occurring values (imaginary part) in a window of the band.

Parameters

rs	The starting row.
cs	The starting column.
rf	The final row.
cf	The final column.
b	The number of bins (intervals from minimum pixel to maximum). When b = 0, the histogram will be divided according to all pixel values.

Note: This method without parameters will compute for the entire raster band.

Warning: The caller is responsible for providing correct values for the range [rs, cs x rf, cf].

Returns: The histogram of the occurring values (imaginary part) in the window.

virtual std::map<double, unsigned> te::rst::Band::getHistogramR	(	unsigned int	rs = `0`,
		unsigned int	cs = `0`,
		unsigned int	rf = `0`,
		unsigned int	cf = `0`,
		unsigned int	b = `0`
	)		const

virtualinherited

It computes and returns the histogram occurring values (real part) in a window of the band.

Parameters

rs	The starting row.
cs	The starting column.
rf	The final row.
cf	The final column.
b	The number of bins (intervals from minimum pixel to maximum). When b = 0, the histogram will be divided according to all pixel values.

Note: This method without parameters will compute for the entire raster band.

Warning: The caller is responsible for providing correct values for the range [rs, cs x rf, cf].

Returns: The histogram of the occurring values (real part) in the window.

void te::mem::CachedBand::getIValue	(	unsigned int	c,
		unsigned int	r,
		double &	value
	)		const

virtual

Returns the imaginary attribute value in a complex band of a cell.

Parameters

c	The column location of the cell.
r	The row location of the cell.
value	The attribute value to be assigned.

Warning: The caller is responsible for providing correct values for the range [c x r].

Exceptions

Exception Subclasses may throw an exception if the data value can not be read.

Implements te::rst::Band.

virtual std::complex<double> te::rst::Band::getMaxValue	(	bool	readall = `false`,
		unsigned int	rs = `0`,
		unsigned int	cs = `0`,
		unsigned int	rf = `0`,
		unsigned int	cf = `0`
	)		const

virtualinherited

It computes and returns the maximum occurring value in a window of the band.

Parameters

readall	Force the reading the entire image (can be slow). If false, will read up to 1000 pixels of the image, equally spaced.
rs	The starting row.
cs	The starting column.
rf	The final row.
cf	The final column.

Note: This method without parameters will compute for the entire raster band.

Warning: The caller is responsible for providing correct values for the range [rs, cs x rf, cf].

Returns: The maximum occurring value in the window, real and imaginary (if present).

virtual std::complex<double> te::rst::Band::getMeanValue	(	unsigned int	rs = `0`,
		unsigned int	cs = `0`,
		unsigned int	rf = `0`,
		unsigned int	cf = `0`
	)		const

virtualinherited

It computes and returns the mean of the occurring values in a window of the band.

Parameters

rs	The starting row.
cs	The starting column.
rf	The final row.
cf	The final column.

Note: This method without parameters will compute for the entire raster band.

Warning: The caller is responsible for providing correct values for the range [rs, cs x rf, cf].

Returns: The mean of the occurring values in the window, real and imaginary (if present).

virtual std::complex<double> te::rst::Band::getMinValue	(	bool	readall = `false`,
		unsigned int	rs = `0`,
		unsigned int	cs = `0`,
		unsigned int	rf = `0`,
		unsigned int	cf = `0`
	)		const

virtualinherited

It computes and returns the minimum occurring value in a window of the band.

Parameters

readall	Force the reading the entire image (can be slow). If false, will read up to 1000 pixels of the image, equally spaced.
rs	The starting row.
cs	The starting column.
rf	The final row.
cf	The final column.

Note: This method without parameters will compute for the entire image.

Warning: The caller is responsible for providing correct values for the range [rs, cs x rf, cf x b].

Returns: The minimum occurring value in the window, real and imaginary (if present).

std::complex<double> te::rst::Band::getOffsetValue ( ) const

inherited

It returns the offset values (real and imaginary) to be applied to the band.

BandProperty* te::rst::Band::getProperty ( )

inherited

Returns the band property.

Referenced by te::rst::AbstractBandIterator< T >::AbstractBandIterator(), te::rst::BandIteratorWindow< T >::BandIteratorWindow(), te::rst::BandIteratorWindow< T >::end(), te::rst::BandIterator< T >::end(), te::rst::ConstBandIterator< T >::end(), and te::rst::BandIteratorWithMask< T >::end().

const BandProperty* te::rst::Band::getProperty ( ) const

inherited

Returns the band property.

te::rst::Raster* te::mem::CachedBand::getRaster ( ) const

inlinevirtual

Returns the associated raster.

Implements te::rst::Band.

Definition at line 67 of file CachedBand.h.

std::complex<double> te::rst::Band::getScaleValue ( ) const

inherited

It returns the scale values (real and imaginary) to be applied to the band.

virtual std::complex<double> te::rst::Band::getStdValue	(	unsigned int	rs = `0`,
		unsigned int	cs = `0`,
		unsigned int	rf = `0`,
		unsigned int	cf = `0`
	)		const

virtualinherited

It computes and returns the standard deviation of the occurring values in a window of the band.

Parameters

rs	The starting row.
cs	The starting column.
rf	The final row.
cf	The final column.

Note: This method without parameters will compute for the entire raster band.

Warning: The caller is responsible for providing correct values for the range [rs, cs x rf, cf].

Returns: The standard deviation of the occurring values in the window, real and imaginary (if present).

void te::mem::CachedBand::getValue	(	unsigned int	c,
		unsigned int	r,
		double &	value
	)		const

virtual

Returns the cell attribute value.

Parameters

c	The column location of the cell.
r	The row location of the cell.
value	To return the attribute value.

Warning: The caller is responsible for providing correct values for the range [c x r].

Exceptions

Exception Subclasses may throw an exception if the data value can not be read.

Implements te::rst::Band.

virtual void te::rst::Band::getValue	(	unsigned int	c,
		unsigned int	r,
		std::complex< double > &	value
	)		const

virtualinherited

Returns the imaginary attribute value in a complex band of a cell.

Parameters

c	The column location of the cell.
r	The row location of the cell.
value	The complex attribute value to be assigned (real, imaginary).

Warning: The caller is responsible for providing correct values for the range [c x r].

Exceptions

Exception Subclasses may throw an exception if the data value can not be read.

Reimplemented in te::gdal::Band.

virtual Band& te::rst::Band::operator*= ( Band & rhs )

virtualinherited

It returns the band product (pixel by pixel).

Parameters

rhs	The band to be multiplied, right-hand side.

Note: Both bands must have the same properties, #columns, #rows, and data type.; The caller is responsible to guarantee that resultant values will not exceed the range of the data type.

Returns: The band product.

virtual Band& te::rst::Band::operator*= ( std::complex< double > & cvalue )

virtualinherited

It returns the product of a constant value to all pixels in the band.

Parameters

cvalue The constant value to be multiplied.

Note: The caller is responsible to guarantee that resultant values will not exceed the range of the data type.

Returns: The band product.

virtual Band& te::rst::Band::operator+= ( Band & rhs )

virtualinherited

It returns the band sum (pixel by pixel).

Parameters

rhs	The band to be added, right-hand side.

Note: Both bands must have the same properties, #columns, #rows, and data type.; The caller is responsible to guarantee that resultant values will not exceed the range of the data type.

Returns: The band sum.

virtual Band& te::rst::Band::operator+= ( std::complex< double > & cvalue )

virtualinherited

It returns the sum of a constant value to all pixels in the band.

Parameters

cvalue The constant value to be added.

Note: The caller is responsible to guarantee that resultant values will not exceed the range of the data type.

Returns: The band sum.

virtual Band& te::rst::Band::operator-= ( Band & rhs )

virtualinherited

It returns the band subtraction (pixel by pixel).

Parameters

rhs	The band to be subtracted, right-hand side.

Note: Both bands must have the same properties, #columns, #rows, and data type.; The caller is responsible to guarantee that resultant values will not exceed the range of the data type.

Returns: The band subtraction.

virtual Band& te::rst::Band::operator-= ( std::complex< double > & cvalue )

virtualinherited

It returns the difference from all pixels in the band to a constant value (pixel - constant).

Parameters

cvalue The constant value to be subtracted.

Note: The caller is responsible to guarantee that resultant values will not exceed the range of the data type.

Returns: The band difference.

virtual Band& te::rst::Band::operator/= ( Band & rhs )

virtualinherited

It returns the band division (pixel by pixel).

Parameters

rhs	The band to be divided, right-hand side.

Note: Both bands must have the same properties, #columns, #rows, and data type.; The caller is responsible to guarantee that resultant values will not exceed the range of the data type.

Returns: The band division.

virtual Band& te::rst::Band::operator/= ( std::complex< double > & cvalue )

virtualinherited

It returns the division of all pixels in the band by a constant value (pixel / constant).

Parameters

cvalue The constant value to be divided.

Note: The caller is responsible to guarantee that resultant values will not exceed the range of the data type.

Returns: The band division.

void te::mem::CachedBand::read	(	int	x,
		int	y,
		void *	buffer
	)		const

virtual

It reads a data block to the specified buffer.

Parameters

x	The block-id in x (or x-offset).
y	The block-id in y (or y-offset).
buffer	The buffer to be used to read from the band.

Note: The upper-left corner is (0, 0).

Warning: The buffer must have been previously allocated and must have enough capacity.

Implements te::rst::Band.

void* te::mem::CachedBand::read	(	int	x,
		int	y
	)

inlinevirtual

It reads and returns a data block.

Parameters

x	The block-id in x (or x-offset).
y	The block-id in y (or y-offset).

Note: The upper-left corner is (0, 0).

Returns: The specified data block.

Implements te::rst::Band.

Definition at line 82 of file CachedBand.h.

void te::mem::CachedBand::setIValue	(	unsigned int	c,
		unsigned int	r,
		const double	value
	)

virtual

Sets the imaginary attribute value in a complex band of a cell.

Parameters

c	The column location of the cell.
r	The row location of the cell.
value	The attribute value to be assigned.

Warning: The caller is responsible for providing correct values for the range [c x r].

Exceptions

Exception Subclasses may throw an exception if the data value can not be write.

Implements te::rst::Band.

void te::rst::Band::setOffsetValue ( const std::complex< double > o )

inherited

Sets the offset values (real and imaginary) to be applied to the band.

Parameters

o	The new offset.

void te::rst::Band::setScaleValue ( const std::complex< double > s )

inherited

Sets the scale values (real and imaginary) to be applied to the band.

Parameters

s	The new scale.

void te::mem::CachedBand::setValue	(	unsigned int	c,
		unsigned int	r,
		const double	value
	)

virtual

Sets the cell attribute value.

Parameters

c	The column location of the cell.
r	The row location of the cell.
value	The attribute value to be assigned.

Warning: The caller is responsible for providing correct values for the range [c x r].

Exceptions

Exception Subclasses may throw an exception if the data value can not be write.

Implements te::rst::Band.

virtual void te::rst::Band::setValue	(	unsigned int	c,
		unsigned int	r,
		const std::complex< double > &	value
	)

virtualinherited

Sets the imaginary attribute value in a complex band of a cell.

Parameters

c	The column location of the cell.
r	The row location of the cell.
value	The complex attribute value to be assigned (real, imaginary).

Warning: The caller is responsible for providing correct values for the range [c x r].

Exceptions

Exception Subclasses may throw an exception if the data value can not be write.

Reimplemented in te::gdal::Band.

void te::mem::CachedBand::write	(	int	x,
		int	y,
		void *	buffer
	)

virtual

It writes a data block from the specified buffer.

Parameters

x	The block-id in x (or x-offset).
y	The block-id in y (or y-offset).
buffer	The buffer to be used to write to the band.

Note: The upper-left corner is (0, 0).

Warning: The method will copy the same amount of bytes used by the internal band block representation.

Implements te::rst::Band.

Member Data Documentation

CachedBandBlocksManager te::mem::CachedBand::dummyBlocksManager

staticprotected

A global static dummy blocks manager.

Definition at line 114 of file CachedBand.h.

unsigned int te::mem::CachedBand::m_blkHeight

protected

The current band blocks height.

Definition at line 98 of file CachedBand.h.

unsigned int te::mem::CachedBand::m_blkSizeBytes

protected

The blocks size (bytes);.

Definition at line 99 of file CachedBand.h.

unsigned int te::mem::CachedBand::m_blkWidth

protected

The current band blocks width.

Definition at line 97 of file CachedBand.h.

CachedBandBlocksManager& te::mem::CachedBand::m_blocksManager

protected

The external blocks manager reference.

Definition at line 112 of file CachedBand.h.

te::rst::GetBufferValueFPtr te::mem::CachedBand::m_getBuff

protected

A pointer to a function that helps to extract a double or complex value from a specific buffer data type (char, int16, int32, float, ...).

Definition at line 101 of file CachedBand.h.

te::rst::GetBufferValueFPtr te::mem::CachedBand::m_getBuffI

protected

A pointer to a function that helps to extract the imaginary part value from a specific buffer data type (cint16, cint32, cfloat, cdouble).

Definition at line 102 of file CachedBand.h.

std::size_t te::rst::Band::m_idx

protectedinherited

The band index.

Definition at line 475 of file Band.h.

BandProperty* te::rst::Band::m_property

protectedinherited

The band information.

Definition at line 474 of file Band.h.

te::rst::SetBufferValueFPtr te::mem::CachedBand::m_setBuff

protected

A pointer to a function that helps to insert a double or complex value into a specific buffer data type (char, int16, int32, float, ...).

Definition at line 103 of file CachedBand.h.

te::rst::SetBufferValueFPtr te::mem::CachedBand::m_setBuffI

protected

A pointer to a function that helps to insert the imaginary part value into a specific buffer data type (cint16, cint32, cfloat, cdouble).

Definition at line 104 of file CachedBand.h.

unsigned int te::mem::CachedBand::m_setGetBlkX

mutableprotected

Definition at line 107 of file CachedBand.h.

unsigned int te::mem::CachedBand::m_setGetBlkY

mutableprotected

Definition at line 108 of file CachedBand.h.

void* te::mem::CachedBand::m_setGetBufPtr

mutableprotected

Definition at line 110 of file CachedBand.h.

unsigned int te::mem::CachedBand::m_setGetPos

mutableprotected

Definition at line 109 of file CachedBand.h.

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

/home/castejon/castejon_files/develop/terralib5/git_master/src/terralib/memory/CachedBand.h

Public Member Functions

Protected Attributes

Static Protected Attributes

Private Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation