JPEG specific handler. More...

Inheritance diagram for JpegHandler:

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Collaboration diagram for JpegHandler:

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Public Member Functions
	getMetadata ( $image, $filename)
	Get handler-specific metadata which will be saved in the img_metadata field. More...

	getScriptParams ( $params)

	makeParamString ( $params)
	Merge a parameter array into a string appropriate for inclusion in filenames. More...

	normaliseParams ( $image, &$params)

	parseParamString ( $str)
	Parse a param string made with makeParamString back into an array. More...

	rotate ( $file, $params)

	sanitizeParamsForBucketing ( $params)
	Returns a normalised params array for which parameters have been cleaned up for bucketing purposes. More...

	supportsBucketing ()
	Returns whether or not this handler supports the chained generation of thumbnails according to buckets. More...

	validateParam ( $name, $value)
	Validate a thumbnail parameter at parse time. More...

Public Member Functions inherited from ExifBitmapHandler
	convertMetadataVersion ( $metadata, $version=1)
	Convert metadata version. More...

	formatMetadata ( $image, $context=false)

	getCommonMetaArray (File $file)
	Get an array of standard (FormatMetadata type) metadata values. More...

	getImageSize ( $image, $path)
	Wrapper for base classes ImageHandler::getImageSize() that checks for rotation reported from metadata and swaps the sizes to match. More...

	getMetadataType ( $image)
	Get a string describing the type of metadata, for display purposes. More...

	getRotation ( $file)
	On supporting image formats, try to read out the low-level orientation of the file and return the angle that the file needs to be rotated to be viewed. More...

	isMetadataValid ( $image, $metadata)

	swapICCProfile ( $filepath, $oldProfileString, $profileFilepath)
	Swaps an embedded ICC profile for another, if found. More...

Public Member Functions inherited from BitmapHandler
	autoRotateEnabled ()

	canRotate ()
	Returns whether the current scaler supports rotation (im and gd do) More...

Public Member Functions inherited from TransformationalImageHandler
	doTransform ( $image, $dstPath, $dstUrl, $params, $flags=0)
	Create a thumbnail. More...

	escapeMagickInput ( $path, $scene=false)
	Escape a string for ImageMagick's input filenames. More...

	escapeMagickOutput ( $path, $scene=false)
	Escape a string for ImageMagick's output filename. More...

	escapeMagickProperty ( $s)
	Escape a string for ImageMagick's property input (e.g. More...

	extractPreRotationDimensions ( $params, $rotation)
	Extracts the width/height if the image will be scaled before rotating. More...

	getMediaTransformError ( $params, $errMsg)
	Get a MediaTransformError with error 'thumbnail_error'. More...

	isImageAreaOkForThumbnaling ( $file, &$params)
	Check if the file is smaller than the maximum image area for thumbnailing. More...

	mustRender ( $file)
	Returns whether the file needs to be rendered. More...

Public Member Functions inherited from ImageHandler
	canRender ( $file)

	getDimensionsString ( $file)

	getImageArea ( $image)
	Function that returns the number of pixels to be thumbnailed. More...

	getLongDesc ( $file)

	getParamMap ()
	Get an associative array mapping magic word IDs to parameter names. More...

	getScriptedTransform ( $image, $script, $params)

	getShortDesc ( $file)

	validateThumbParams (&$width, &$height, $srcWidth, $srcHeight, $mimeType)
	Validate thumbnail parameters and fill in the correct height. More...

Public Member Functions inherited from MediaHandler
	canAnimateThumbnail ( $file)
	If the material is animated, we can animate the thumbnail. More...

	filterThumbnailPurgeList (&$files, $options)
	Remove files from the purge list. More...

	formatMetadataHelper ( $metadataArray, $context=false)
	sorts the visible/invisible field. More...

	getAvailableLanguages (File $file)
	Get list of languages file can be viewed in. More...

	getDefaultRenderLanguage (File $file)
	On file types that support renderings in multiple languages, which language is used by default if unspecified. More...

	getEntireText (File $file)
	Get the text of the entire document. More...

	getLength ( $file)
	If its an audio file, return the length of the file. More...

	getPageDimensions (File $image, $page)
	Get an associative array of page dimensions Currently "width" and "height" are understood, but this might be expanded in the future. More...

	getPageText (File $image, $page)
	Generic getter for text layer. More...

	getStreamHeaders ( $metadata)
	Get useful response headers for GET/HEAD requests for a file with the given metadata. More...

	getThumbType ( $ext, $mime, $params=null)
	Get the thumbnail extension and MIME type for a given source MIME type. More...

	getTransform ( $image, $dstPath, $dstUrl, $params)
	Get a MediaTransformOutput object representing the transformed output. More...

	getWarningConfig ( $file)
	Gets configuration for the file warning message. More...

	isAnimatedImage ( $file)
	The material is an image, and is animated. More...

	isEnabled ()
	False if the handler is disabled for all files. More...

	isExpensiveToThumbnail ( $file)
	True if creating thumbnails from the file is large or otherwise resource-intensive. More...

	isMultiPage ( $file)
	True if the type has multi-page capabilities. More...

	isVectorized ( $file)
	The material is vectorized and thus scaling is lossless. More...

	pageCount (File $file)
	Page count for a multi-page document, false if unsupported or unknown. More...

	parserTransformHook ( $parser, $file)
	Modify the parser object post-transform. More...

	removeBadFile ( $dstPath, $retval=0)
	Check for zero-sized thumbnails. More...

	verifyUpload ( $fileName)
	File validation hook called on upload. More...

Static Private Member Functions
static	validateQuality ( $value)
	Validate and normalize quality value to be between 1 and 100 (inclusive). More...

Additional Inherited Members
Static Public Member Functions inherited from BitmapHandler
static	imageJpegWrapper ( $dst_image, $thumbPath, $quality=95)
	Callback for transformGd when transforming jpeg images. More...

Static Public Member Functions inherited from MediaHandler
static	fitBoxWidth ( $boxWidth, $boxHeight, $maxHeight)
	Calculate the largest thumbnail width for a given original file size such that the thumbnail's height is at most $maxHeight. More...

static	getGeneralLongDesc ( $file)
	Used instead of getLongDesc if there is no handler registered for file. More...

static	getGeneralShortDesc ( $file)
	Used instead of getShortDesc if there is no handler registered for file. More...

static	getHandler ( $type)
	Get a MediaHandler for a given MIME type from the instance cache. More...

static	getMetadataVersion ()
	Get metadata version. More...

Public Attributes inherited from ExifBitmapHandler
const	BROKEN_FILE = '-1'

const	OLD_BROKEN_FILE = '0'

const	SRGB_ICC_PROFILE_NAME = 'IEC 61966-2.1 Default RGB colour space - sRGB'

Public Attributes inherited from MediaHandler
const	MAX_ERR_LOG_SIZE = 65535
	Max length of error logged by logErrorForExternalProcess() More...

const	METADATA_BAD = false

const	METADATA_COMPATIBLE = 2

const	METADATA_GOOD = true

const	TRANSFORM_LATER = 1

Protected Member Functions inherited from ExifBitmapHandler
	getRotationForExif ( $data)
	Given a chunk of serialized Exif metadata, return the orientation as degrees of rotation. More...

	transformImageMagick ( $image, $params)
	Transform an image using ImageMagick. More...

Protected Member Functions inherited from BitmapHandler
	getScalerType ( $dstPath, $checkDstPath=true)
	Returns which scaler type should be used. More...

	imageMagickSubsampling ( $pixelFormat)
	Get ImageMagick subsampling factors for the target JPEG pixel format. More...

	transformCustom ( $image, $params)
	Transform an image using a custom command. More...

	transformGd ( $image, $params)
	Transform an image using the built in GD library. More...

	transformImageMagickExt ( $image, $params)
	Transform an image using the Imagick PHP extension. More...

Protected Member Functions inherited from TransformationalImageHandler
	escapeMagickPath ( $path, $scene=false)
	Armour a string against ImageMagick's GetPathComponent(). More...

	getClientScalingThumbnailImage ( $image, $scalerParams)
	Get a ThumbnailImage that respresents an image that will be scaled client side. More...

	getMagickVersion ()
	Retrieve the version of the installed ImageMagick You can use PHPs version_compare() to use this value Value is cached for one hour. More...

	getThumbnailSource ( $file, $params)
	Get the source file for the transform. More...

Protected Member Functions inherited from MediaHandler
	logErrorForExternalProcess ( $retval, $err, $cmd)
	Log an error that occurred in an external process. More...

	visibleMetadataFields ()
	Get a list of metadata items which should be displayed when the metadata table is collapsed. More...

Static Protected Member Functions inherited from MediaHandler
static	addMeta (&$array, $visibility, $type, $id, $value, $param=false)
	This is used to generate an array element for each metadata value That array is then used to generate the table of metadata values on the image page. More...

Detailed Description

JPEG specific handler.

Inherits most stuff from BitmapHandler, just here to do the metadata handler differently.

Metadata stuff common to Jpeg and built-in Tiff (not PagedTiffHandler) is in ExifBitmapHandler.

Definition at line 33 of file Jpeg.php.

Member Function Documentation

◆ getMetadata()

JpegHandler::getMetadata	(	$image,
		$path
	)

Get handler-specific metadata which will be saved in the img_metadata field.

Parameters

File \| FSFile	$image	The image object, or false if there isn't one. Warning, FSFile::getPropsFromPath might pass an FSFile instead of File (!)
string	$path	The filename

Returns: string A string of metadata in php serialized form (Run through serialize())

Reimplemented from MediaHandler.

Definition at line 99 of file Jpeg.php.

References $e, ExifBitmapHandler\BROKEN_FILE, BitmapMetadataHandler\Jpeg(), serialize(), Exif\version(), and wfDebug().

◆ getScriptParams()

JpegHandler::getScriptParams ( $params )

Reimplemented from ImageHandler.

Definition at line 91 of file Jpeg.php.

References $params, and $res.

◆ makeParamString()

JpegHandler::makeParamString ( $params )

Merge a parameter array into a string appropriate for inclusion in filenames.

Parameters

array $params Array of parameters that have been through normaliseParams.

Returns: string

Reimplemented from BitmapHandler.

Definition at line 61 of file Jpeg.php.

References $params, and $res.

◆ normaliseParams()

JpegHandler::normaliseParams	(		$image,
		&	$params
	)

Parameters

File	$image
array	$params

Returns: bool

Reimplemented from BitmapHandler.

Definition at line 35 of file Jpeg.php.

References $image, and $params.

◆ parseParamString()

JpegHandler::parseParamString ( $str )

Parse a param string made with makeParamString back into an array.

Parameters

string $str The parameter string without file name (e.g. 122px)

Returns: array|bool Array of parameters or false on failure.

Reimplemented from BitmapHandler.

Definition at line 70 of file Jpeg.php.

References $res.

◆ rotate()

JpegHandler::rotate	(	$file,
		$params
	)

Parameters

File	$file
array	$params	Rotate parameters. 'rotation' clockwise rotation in degrees, allowed are multiples of 90

Since: 1.21

Returns: bool|MediaTransformError

Reimplemented from BitmapHandler.

Definition at line 135 of file Jpeg.php.

References $params, $retval, $wgJpegTran, ExifBitmapHandler\getRotation(), global, MediaHandler\logErrorForExternalProcess(), wfDebug(), wfEscapeShellArg(), and wfShellExecWithStderr().

◆ sanitizeParamsForBucketing()

JpegHandler::sanitizeParamsForBucketing ( $params )

Returns a normalised params array for which parameters have been cleaned up for bucketing purposes.

Parameters

array $params

Returns: array

Reimplemented from ImageHandler.

Definition at line 164 of file Jpeg.php.

References $params.

◆ supportsBucketing()

JpegHandler::supportsBucketing ( )

Returns whether or not this handler supports the chained generation of thumbnails according to buckets.

Returns: bool

Since: 1.24

Reimplemented from MediaHandler.

Definition at line 160 of file Jpeg.php.

◆ validateParam()

JpegHandler::validateParam	(	$name,
		$value
	)

Validate a thumbnail parameter at parse time.

Return true to accept the parameter, and false to reject it. If you return false, the parser will do something quiet and forgiving.

Parameters

string	$name
mixed	$value

Reimplemented from BitmapHandler.

Definition at line 45 of file Jpeg.php.

References $name, $value, and validateQuality().

◆ validateQuality()

static JpegHandler::validateQuality ( $value )

staticprivate

Validate and normalize quality value to be between 1 and 100 (inclusive).

Parameters

int $value Quality value, will be converted to integer or 0 if invalid

Returns: bool True if the value is valid

Definition at line 57 of file Jpeg.php.

References $value.

Referenced by validateParam().

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

includes/media/Jpeg.php

Public Member Functions

Static Private Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ getMetadata()

◆ getScriptParams()

◆ makeParamString()

◆ normaliseParams()

◆ parseParamString()

◆ rotate()

◆ sanitizeParamsForBucketing()

◆ supportsBucketing()

◆ validateParam()

◆ validateQuality()