JW Class Reference

Base class. Use JWCompress or JWDecompress instead of this class. More...

#include <JW.hpp>

Inheritance diagram for JW:

Collaboration diagram for JW:

Public Member Functions
virtual	~JW (void)
	Destructor. More...
virtual std::string	get_filename (void) const
	The filename used for input (decompress) or output (compress) if set via set_file(). More...

Public Attributes
jpeg_error_mgr	jerr
	IJG's structures and pointers to those structures used by derived classes. More...
jpeg_error_mgr *	jerr_ptr
	IJG's structures and pointers to those structures used by derived classes. More...
jpeg_compress_struct *	cinfo_ptr
	IJG's structures and pointers to those structures used by derived classes. More...
jpeg_decompress_struct *	dinfo_ptr
	IJG's structures and pointers to those structures used by derived classes. More...

Protected Member Functions
	JW (void)
	Constructor is protected. Use the derived classes JWCompress and JWDecompress, not this base class. More...
virtual JW &	set_file (const std::string &filename)
	Protected method to set the input or output file. More...
virtual JW &	set_file (FILE *f)

Protected Attributes
std::string	fname
	The filename used for input (decompress) or output (compress) if set via set_file(). More...
FILE *	file
	Input/output file. Used for output when compressing, and input when decompressing. More...

Detailed Description

Base class. Use JWCompress or JWDecompress instead of this class.

Constructor & Destructor Documentation

~JW()

JW::~JW ( void  )

virtual

Destructor.

JW()

JW::JW ( void  )

protected

Constructor is protected. Use the derived classes JWCompress and JWDecompress, not this base class.

Member Function Documentation

get_filename()

virtual std::string JW::get_filename ( void  ) const

inlinevirtual

The filename used for input (decompress) or output (compress) if set via set_file().

The only way to set the input or output file is to call JWCompress::set_output_file() or JWDecompress::set_input_file().

set_file() [1/2]

JW & JW::set_file ( const std::string &  filename )

protectedvirtual

Protected method to set the input or output file.

Use the equivalent functions in the derived classes instead.

See also

JWCompress::set_output_file()

JWDecompress::set_input_file()

Exceptions

std::runtime_error

if the named file cannot be opened

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set_file() [2/2]

JW & JW::set_file ( FILE *  f )

protectedvirtual

Exceptions

std::runtime_error

if the file pointer is null

Member Data Documentation

cinfo_ptr

jpeg_compress_struct* JW::cinfo_ptr

IJG's structures and pointers to those structures used by derived classes.

dinfo_ptr

jpeg_decompress_struct* JW::dinfo_ptr

IJG's structures and pointers to those structures used by derived classes.

file

FILE* JW::file

protected

Input/output file. Used for output when compressing, and input when decompressing.

fname

std::string JW::fname

protected

The filename used for input (decompress) or output (compress) if set via set_file().

See also

get_filename()

jerr

jpeg_error_mgr JW::jerr

IJG's structures and pointers to those structures used by derived classes.

jerr_ptr

jpeg_error_mgr* JW::jerr_ptr

IJG's structures and pointers to those structures used by derived classes.

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

• src/JW.hpp
• src/JW.cpp