Extension:VipsScaler

From MediaWiki.org
Jump to: navigation, search


MediaWiki extensions manual
Crystal Clear action run.png
VipsScaler

Release status: beta

Implementation Media
Description Allows to scale PNG and JPEG images using VIPS
Author(s) Bryan Tong Minh (Bryantalk)
MediaWiki 1.19+
Database changes No
License MIT
Download
README
Parameters
  • $wgVipsCommand
  • $wgVipsOptions
Added rights

vipsscaler-test

Hooks used
BitmapHandlerTransform

BitmapHandlerCheckImageArea

Translate the VipsScaler extension if it is available at translatewiki.net

Check usage and version matrix; code metrics
Bugs: list open list all report

The VipsScaler extension is a wrapper around VIPS, a free image processing software. VIPS is a set of image manipulation tools specially designed for speed and low memory usage. This is useful for resizing large PNGs, and it improves the appearance of shrunken JPEGs.

The extension shells out to the vips binary. It can be configured to scale only certain files (for example: big PNGs) by configuring $wgVipsConditions.

VIPS installation[edit | edit source]

Install VIPS. It can be downloaded from http://www.vips.ecs.soton.ac.uk/.

After downloading VipsScaler, add it to your extensions/ directory, then add require_once("$IP/extensions/VipsScaler/VipsScaler.php"); If you'd like to add the Special:VipsTest test page, also add require_once("$IP/extensions/VipsScaler/VipsTest.php");

Debian / Ubuntu[edit | edit source]

$ apt-get install libvips-tools

If you want to build from source have a look at upstream documentation: http://www.vips.ecs.soton.ac.uk/index.php?title=Build_on_Ubuntu

(Wikimedia has packaged and uses a more recent version for Ubuntu 12.04 at apt.wikimedia.org)

Mac OS X[edit | edit source]

homebrew
brew install homebrew/science/vips
binary symlink is /usr/local/bin/vips

Configuration[edit | edit source]

$wgVipsCommand : path to the vips command (default: vips).

$wgVipsOptions : scaler conditions, to be documented.