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ngx-gm-filter

ngx-gm-filter - Another image filter based GraphicsMagick.

Status

This module is under active development and is production ready.

Version

This document describes ngx-gm-filter v0.2.0.

Synopsis

server { gm_buffer 10M; #log length difference log_format comp '$time_iso8601 $gm_original_len $body_bytes_sent'; access_log /var/log/nginx/comp.log comp; location /gm { alias imgs;

     set $resize 100x100>;
     set $rotate 180;

     gm convert -resize $resize -rotate $rotate;
     gm composite -gravity SouthEast -min-width 200 -min-height 200 wm.png;

     gm_image_quality 85;
}

strip images from metadata

location /strip {
gm_image_quality 99;
gm_buffer 10M;
gm convert strip;
}

}

Description

Directives

gm_buffer

syntax: gm_buffer size

default: gm_buffer 4M

context: server, location

gm_image_quality

syntax: gm_image_quality quality

default: gm_image_quality 75

context: server, location

gm

syntax: gm_[convert|composite]_ options

default: none

context: location

gm samples

gm convert -resize 100x200! gm convert -resize 100x200c

Installation

Install GraphicsMagick

Install GraphicsMagick with jpeg and png

sudo apt-get install libjpeg-dev libpng-dev
wget ftp://ftp.graphicsmagick.org/pub/GraphicsMagick/1.3/GraphicsMagick-1.3.16.tar.gz
tar xzvf GraphicsMagick-1.3.16.tar.gz
cd GraphicsMagick-1.3.16
./configure --with-x=no --with-jpeg=yes --with-png=yes
make
sudo make install

Install ngx-gm-filter

Build the source with this module:

wget 'http://nginx.org/download/nginx-1.2.1.tar.gz'
tar -xzvf nginx-1.2.1.tar.gz
cd nginx-1.2.1/

./configure --prefix=/opt/nginx \
			--add-module=path/to/ngx-gm-filter

make -j2
sudo make install

Copyright and License

This module is licensed under the BSD license.

Copyright (C) 2009-2012, by "liseen" Xunxin Wan(万珣新) liseen.wan@gmail.com.

All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

See Also

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Another image filter based GraphicsMagic

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