PngImageEncoder Class Reference

Converts image type ImageType::PNG. More...

#include <ImageEncoder.h>

Collaboration diagram for PngImageEncoder:

Public Member Functions
	PngImageEncoder ()
	Construct a new Png Image Encoder object The default compression level is 9.
void	SetCompressionLevel (int level)
	Set compression level.
int	GetCompressionLevel () const
	Provides compression level.
void	Accept (ImageEncoderVisitor &visitor) const final
	Allow visitor to visit concrete type of encoder.
std::vector< uint8_t >	Encode (const RawImage &raw) const final
	Saves given RawImage as formatted image.

Static Public Member Functions
static std::shared_ptr< ImageEncoder >	Create (ImageType type)
	Create concrete default encoder for given type.

Detailed Description

Converts image type ImageType::PNG.

Member Function Documentation

Accept()

void Accept ( ImageEncoderVisitor & visitor ) const

inlinefinalvirtual

Allow visitor to visit concrete type of encoder.

Parameters

visitor

ImageEncoderVisitor to call

Implements ImageEncoder.

Create()

std::shared_ptr< ImageEncoder > Create ( ImageType type )

inlinestaticinherited

Create concrete default encoder for given type.

Parameters

type

ImageType

Exceptions

EnrollmentException

when image type is unknown

Returns

ImageEncoder

References ImageType::BMP, ImageType::IRAW, ImageType::JPG, ImageType::JPG2000, ImageType::PNG, ImageType::TIFF, ImageException::UNKNOWN_IMAGE, ImageType::WEBP, and ImageType::WSQ.

Referenced by Image::Decode(), and ImageFileSaver::Save().

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Encode()

std::vector< uint8_t > Encode ( const RawImage & raw ) const

inlinefinalvirtualinherited

Saves given RawImage as formatted image.

Parameters

raw

RawImage

Returns

encoded image

Exceptions

ImageException	when it is not possible to encode image
InvalidImageArgumentException	when image is empty

Implements ImageEncoder.

GetCompressionLevel()

int GetCompressionLevel ( ) const

inline

Provides compression level.

Returns

compression level

SetCompressionLevel()

void SetCompressionLevel ( int level )

inline

Set compression level.

Parameters

level

compression level from 0 to 9. A higher value means a smaller size and longer compression time.

Exceptions

EnrollmentInvalidArgumentException

when level is not in range

Referenced by PngImageEncoder().

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

• Image/ImageEncoder.h