png::writer< ostream > Class Template Reference

PNG writer class template. This is the low-level writing interface--use image class or generator class to actually write images. More...

#include <writer.hpp>

Inheritance diagram for png::writer< ostream >:

List of all members.

Public Member Functions
	writer (ostream &stream)
	Constructs a writer prepared to write PNG image into a stream.
	~writer ()
void	write_png () const
void	write_info () const
	Write info about PNG image.
void	write_row (byte *bytes)
	Writes a row of image data at a time.
void	write_end_info () const
	Reads ending info about PNG image.

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Detailed Description

template<class ostream>
class png::writer< ostream >

PNG writer class template. This is the low-level writing interface--use image class or generator class to actually write images.

The ostream template parameter specifies the type of output stream to work with. The ostream class should implement the minimum of the following interface:

 class my_ostream
 {
 public:
     void write(char const*, size_t);
     void flush();
     bool good();
 };

With the semantics similar to the std::ostream. Naturally, std::ostream fits this requirement and can be used with the writer class as is.

See also:

image, reader, generator, io_base

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Constructor & Destructor Documentation

template<class ostream>

png::writer< ostream >::writer

(

ostream &

stream

)

[inline, explicit]

Constructs a writer prepared to write PNG image into a stream.

References png::io_base::m_png.

template<class ostream>

png::writer< ostream >::~writer

(

)

[inline]

References png::end_info::destroy(), png::info_base::get_png_info_ptr(), png::io_base::m_end_info, png::io_base::m_info, and png::io_base::m_png.

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Member Function Documentation

template<class ostream>

void png::writer< ostream >::write_png

(

)

const [inline]

References png::info_base::get_png_info(), png::io_base::m_error, png::io_base::m_info, and png::io_base::m_png.

template<class ostream>

void png::writer< ostream >::write_info

(

)

const [inline]

Write info about PNG image.

References png::io_base::m_error, png::io_base::m_info, png::io_base::m_png, and png::info::write().

Referenced by png::generator< pixel, pixel_generator, image_info_ref_holder, true >::write().

template<class ostream>

void png::writer< ostream >::write_row

(

byte *

bytes

)

[inline]

Writes a row of image data at a time.

References png::io_base::m_error, and png::io_base::m_png.

Referenced by png::generator< pixel, pixel_generator, image_info_ref_holder, true >::write().

template<class ostream>

void png::writer< ostream >::write_end_info

(

)

const [inline]

Reads ending info about PNG image.

References png::io_base::m_end_info, png::io_base::m_error, png::io_base::m_png, and png::end_info::write().

Referenced by png::generator< pixel, pixel_generator, image_info_ref_holder, true >::write().

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

• writer.hpp