A structure holding portable-anymap metadata. More...

#include <grpnm.h>

Public Member Functions
	PnmInfo ()
	Default constructor for an invalid structure.

	PnmInfo (std::istream &)
	Constructor reading from an istream.

	PnmInfo (const std::vector< char > &)
	Constructor reading from a buffer. More...

	PnmInfo (const ImageBuffer &)
	Constructor reading from a Gr::ImageBuffer.

	PnmInfo (const char *, size_t)
	Constructor overload for a char buffer.

	PnmInfo (const unsigned char *, size_t)
	Constructor overload for unsigned char.

	PnmInfo (int pn, int dx, int dy, int maxval, size_t offset)
	Constructor taking the individual metadata items.

bool	valid () const
	Returns true if successfully constructed.

bool	binary () const
	Returns true if a binary format.

bool	binary8 () const
	Returns true if an eight-bit binary format, ie. P5 or P6.

int	dx () const
	Returns the image width.

int	dy () const
	Returns the image height.

int	channels () const
	Returns the number of channels.

int	pn () const
	Returns the p-number.

int	maxval () const
	Returns the maximum value, or zero for bitmap formats (p1/p4).

size_t	offset () const
	Returns the size of the header.

size_t	rowsize () const
	Returns dx() * channels().

Detailed Description

A structure holding portable-anymap metadata.

Definition at line 42 of file grpnm.h.

Constructor & Destructor Documentation

Gr::PnmInfo::PnmInfo ( const std::vector< char > & buffer )

explicit

Constructor reading from a buffer.

There is no limit on the header size (because of comments and whitespace) so the whole image should be supplied.

Definition at line 337 of file grpnm.cpp.

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