slip::JpegWriter< Container2d, T, Nb_components > Class Template Reference

JpegWriter is the jpeg image writer. More...

#include <JpegWriter.hpp>

Inheritance diagram for slip::JpegWriter< Container2d, T, Nb_components >:

Public Types
typedef Container2d	container_type
typedef T	value_type
typedef ContainerWriter < Container2d, T >	base

Public Member Functions
void	initialize (std::size_t output_image_width, std::size_t output_image_height, int quality=90)
	initialized the writing process. Has to be called before the first write() call of a given image. More...
void	release ()
	release the writing process. Has to be called when an image has been fully written. More...
int	write (const container_type &data)
	write function. This function write the data within the output file after the previous one. When last is set to true, the output file is closed. More...
Constructors & Destructors
	JpegWriter ()
	JpegWriter (std::string output_filename, std::size_t output_image_width, std::size_t output_image_height, int quality=90)
virtual	~JpegWriter ()
Getters and setters
const std::string &	get_output_filename () const
	return the output file name. More...
void	set_output_filename (const std::string &output_filename)
	set the output file name. More...

Protected Attributes
std::string	output_filename_

Detailed Description

template<class Container2d, typename T, std::size_t Nb_components>
class slip::JpegWriter< Container2d, T, Nb_components >

JpegWriter is the jpeg image writer.

Version

Fluex 1.0

Date

2013/04/09

Author

Denis Arrivault <denis.arrivault_AT_inria.fr>

Parameters

Container2d	is the type of the containers that will be written in the jpeg file. It should be a 2 dimensional containers with [] operator, width() and height() methods defined.
T	the type of the container data.
Nb_components	the number of image components (3 for a color image or 1 for a gray scale image).

Note

The color space is RGB for color image and GRAYSCALE for grayscale images.

Examples:

jpg_file_io.cpp.

Definition at line 45 of file JpegWriter.hpp.

Member Typedef Documentation

template<class Container2d , typename T , std::size_t Nb_components>

typedef ContainerWriter<Container2d, T> slip::JpegWriter< Container2d, T, Nb_components >::base

Definition at line 49 of file JpegWriter.hpp.

template<class Container2d , typename T , std::size_t Nb_components>

typedef Container2d slip::JpegWriter< Container2d, T, Nb_components >::container_type

Definition at line 47 of file JpegWriter.hpp.

template<class Container2d , typename T , std::size_t Nb_components>

typedef T slip::JpegWriter< Container2d, T, Nb_components >::value_type

Definition at line 48 of file JpegWriter.hpp.

Constructor & Destructor Documentation

template<class Container2d , typename T , std::size_t Nb_components>

slip::JpegWriter< Container2d, T, Nb_components >::JpegWriter ( )

inline

Default constructor

Definition at line 59 of file JpegWriter.hpp.

template<class Container2d , typename T , std::size_t Nb_components>

slip::JpegWriter< Container2d, T, Nb_components >::JpegWriter ( std::string  output_filename, std::size_t  output_image_width, std::size_t  output_image_height, int  quality = 90  )

inline

Constructor with parameters.

Parameters

output_filename	is the name of the output file where the data of the container will be saved
output_image_width	the total image width
output_image_height	the total image height
quality	is the compression rate (default is 90%)

Definition at line 72 of file JpegWriter.hpp.

template<class Container2d , typename T , std::size_t Nb_components>

virtual slip::JpegWriter< Container2d, T, Nb_components >::~JpegWriter ( )

inlinevirtual

Destructor

Definition at line 82 of file JpegWriter.hpp.

Member Function Documentation

const std::string& slip::ContainerWriter< Container2d , T >::get_output_filename ( ) const

inherited

return the output file name.

template<class Container2d , typename T , std::size_t Nb_components>

void slip::JpegWriter< Container2d, T, Nb_components >::initialize ( std::size_t  output_image_width, std::size_t  output_image_height, int  quality = 90  )

inline

initialized the writing process. Has to be called before the first write() call of a given image.

Parameters

output_image_width	the total image width
output_image_height	the total image height
quality	is the compression rate (default is 90%)

Definition at line 135 of file JpegWriter.hpp.

template<class Container2d , typename T , std::size_t Nb_components>

void slip::JpegWriter< Container2d, T, Nb_components >::release ( )

inline

release the writing process. Has to be called when an image has been fully written.

Definition at line 251 of file JpegWriter.hpp.

void slip::ContainerWriter< Container2d , T >::set_output_filename ( const std::string &  output_filename )

inherited

set the output file name.

template<class Container2d , typename T , std::size_t Nb_components>

int slip::JpegWriter< Container2d, T, Nb_components >::write ( const container_type &  data )

inlinevirtual

write function. This function write the data within the output file after the previous one. When last is set to true, the output file is closed.

Parameters

data	is the image container to save. Warning, the container should be a 2d container with [] operator, width() and height() methods defined.

Returns

false if the file has been completely filled.

Note

Whatever the type of the data in the container, a static_cast is done for getting unsigned char. Be sure that the dynamic of the data is conform with this cast.

The color space is RGB for color image and GRAYSCALE for grayscale images.

Implements slip::ContainerWriter< Container2d, T >.

Definition at line 214 of file JpegWriter.hpp.

Member Data Documentation

std::string slip::ContainerWriter< Container2d , T >::output_filename_

protectedinherited

Definition at line 89 of file ContainerWriter.hpp.

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

• src/io/JpegWriter.hpp