Common Lisp CFFI wrapper for [GraphicsMagickWand](http://www.graphicsmagick.org/wand/wand.html).
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README.md

cl-graphicsmagick

cl-graphicsmagick is a Common Lisp CFFI wrapper for GraphicsMagickWand.

Compatibility

Common Lisp Linux Mac Unix Windows
SBCL Yes Yes ? ?

Note: I don't have Unix system so haven't test on Unix yet. Welcome to reply.

Build & Install GraphicsMagickWand dynamic library

Linux

Note: if you want to run cl-graphicsmagick on Linux 64bit systems with SBCL, you should patch the source code of GraphicsMagick: delete/comment #if defined(SIGSEGV) statement in file magick/magick.c and build, more details see Known Issues above.

Build Dependencies

  • freetype-devel
  • zlib-devel
  • libjpeg-devel
  • libpng-devel
  • libtiff-devel
  • giflib-devel
  • libtool-ltdl-devel
  • lcms2-devel
  • jasper-devel
  • libxml2-devel
  • bzip2-devel

Note: On CentOS you can just run command below command to install dependencies:

yum install -y freetype-devel zlib-devel libjpeg-devel libpng-devel libtiff-devel giflib-devel libtool-ltdl-devel lcms2-devel jasper-devel libxml2-devel bzip2-devel

Build from source code

mkdir /usr/local/src
cd /usr/local/src
wget http://downloads.sourceforge.net/project/graphicsmagick/graphicsmagick/1.3.25/GraphicsMagick-1.3.25.tar.gz
tar xvf GraphicsMagick-1.3.25.tar.gz
cd GraphicsMagick-1.3.25

Note: mare sure comment #if defined(SIGSEGV) statement in file magick/magick.c

./configure --enable-shared \
            --disable-static \
            --with-modules \
            --without-x \
            --without-magick-plus-plus \
            --without-perl \
            --disable-openmp && \
            make && make install
sudo make && make install

Note: if you want to use Windows font, use option --with-windows-font-dir, for example: --with-windows-font-dir=/usr/share/fonts/ms_font(put Windows font files to path /usr/share/fonts/ms_font), Windows font's filenames end with .ttf, recommend using font file Arial Unicode.ttf

Note: Make sure file libGraphicsMagickWand.so and libGraphicsMagick.so can be found in one of these location: /usr/lib /usr/local/lib

Mac OS X

Please do use HomeBrew to install GraphicsMagick:

brew install graphicsmagick

Install and load cl-graphicsmagick with QuickLisp

In shell:

git clone https://github.com/muyinliu/cl-graphicsmagick.git
cp -r cl-diskspace ~/quicklisp/local-projects/

In Common Lisp:

(ql:quickload 'cl-graphicsmagick)

Note: gm is the nickname of package cl-graphicsmagick

Usage

Get GraphicsMagick's version

(gm:magick-get-version)

=>

"GraphicsMagick 1.3.25 2016-09-05 Q8 http://www.GraphicsMagick.org/"
1578241

Get Image's information

(gm:describe-image "/path/to/image.png")

=>

"Image: /path/to/image.png
  Format: PNG (Portable Network Graphics)
  Geometry: 99x99
  Class: DirectClass
  Type: true color with transparency
  Depth: 8 bits-per-pixel component
  Channel Depths:
    Red:      8 bits
    Green:    8 bits
    Blue:     8 bits
    Opacity:  1 bits
  Channel Statistics:
    Red:
      Minimum:                     0.00 (0.0000)
      Maximum:                   255.00 (1.0000)
      Mean:                      216.70 (0.8498)
      Standard Deviation:         54.02 (0.2118)
    Green:
      Minimum:                     0.00 (0.0000)
      Maximum:                   255.00 (1.0000)
      Mean:                      169.32 (0.6640)
      Standard Deviation:         62.09 (0.2435)
    Blue:
      Minimum:                     0.00 (0.0000)
      Maximum:                   255.00 (1.0000)
      Mean:                      136.35 (0.5347)
      Standard Deviation:         75.14 (0.2947)
    Opacity:
      Minimum:                     0.00 (0.0000)
      Maximum:                   255.00 (1.0000)
      Mean:                       31.79 (0.1247)
      Standard Deviation:         84.25 (0.3304)
  Opacity: (255,255,255,255)   #FFFFFFFF
  Rendering-Intent: saturation
  Gamma: 0.45455
  Chromaticity:
    red primary: (0.64,0.33)
    green primary: (0.3,0.6)
    blue primary: (0.15,0.06)
    white point: (0.3127,0.329)
  Resolution: 28.35x28.35 pixels/centimeter
  Filesize: 16.7Ki
  Interlace: No
  Orientation: Unknown
  Background Color: white
  Border Color: #DFDFDF00
  Matte Color: #BDBDBD00
  Page geometry: 99x99+0+0
  Compose: Over
  Dispose: Undefined
  Iterations: 0
  Compression: Zip
  Png:IHDR.color-type-orig: 6
  Png:IHDR.bit-depth-orig: 8
  Signature: 22840ae27432c17cf141a0abbc0c892f85b16ffadd793d5caccc57b5744f40ca
  Profile-color: 3144 bytes
  Tainted: False
  User Time: 162.980u
  Elapsed Time: 223:34
  Pixels Per Second: 0
"

Get image's width and height

(gm:image-width-height "/1.png")

=>

99
99

Rotate image

(gm:rotate-image "/input.png" "/rotate_output.png" "white" 45)

=>

"/rotate_output.png"

Resize image

(gm:resize-image "/input.png" "/resize_output_30x30px.png" 30 30)

=>

"/resize_output_30x30px.png"

Add text watermark to image

(gm:add-text-watermark-to-image "/input.png" 
                                "/add_text_watermarks_output.png"
                                "@muyinliu"
                                :color "white"
                                :font-path "/path/to/font.otf"
                                :font-size 14
                                :gravity :%SouthEaseGravity
                                :x 10
                                :y 10)

=>

"/add_text_watermarks_output.png"

Run test case

Dependencies

Install dependencies with Quicklisp:

(ql:quickload '(prove prove-asdf cl-ansi-text))

Note: make sure have all dependencies installed.

Run test case now

In Common Lisp REPL:

(asdf:test-system :cl-graphicsmagick)

OR in Shell:

sbcl --eval "(asdf:test-system :cl-graphicsmagick)" --eval "(quit)"

Known Issues

SIGSEGV Signal Handlers bug while runing on SBCL with Linux 64bit systems

Both GraphicsMagick and SBCL want to handle the signal cause SBCL crash on Linux 64bit systems(as far as I know, cl-graphicsmagick crash on CentOS 5.8 Final 64bit and CentOS 6.7 Final 64bit, and stuck CPU 100% on Debian 64bit system).

Thanks to mordocai, stassats and foom, solution is found.

Please delete/comment these lines(near line 1060) in magick/magick.c of GraphicsMagick v1.3.18+:

#if defined(SIGSEGV)
  (void) MagickCondSignal(SIGSEGV,MagickPanicSignalHandler);
#endif

And rebuild GraphicsMagick.

Unable to read font (/usr/local/share/ghostscript/fonts/n019003l.pfb)

Install ghostscript will solve this problem.

On Mac OS

brew install ghostscript

On Linux

yum install ghostscript

OR

apt-get install ghostscript

License

MIT (See LICENSE file for details).