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Transform a image with Javascript

Question asked by larade on Sep 11, 2017
Latest reply on Sep 12, 2017 by larade

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Hello,  I have a problem to transform an image. I use a javascript script found in the Alfresco documentation. My version is 5.2.  The script :

// convert an image to JPG format and resize to thumbnail image
var thumbImage = document.transformImage('image/jpeg', '-resize 120');
 
The log:
ERROR [org.alfresco.repo.jscript.ScriptNode] [defaultAsyncAction4] 08110207 Unsupported transformation: transformer.ImageMagick image/jpeg to image/png

Screenshot :


The image is well converted but the resize does not work. The mimetype (property of the image) can not change.
Being a beginner, I can not understand the log message.
Thank you in advance for your help.
Olivier

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mehe Sep 11, 2017 10:48 AM
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I had a problem with a "duplicate child name" when trying this.
var thumbImage = document.transformImage('image/jpeg', '-resize 120',document.parent.parent);
worked for me and the thumbnail is created on folder above the document (just for testing). But I didn't get the conversion error...

...ok, I first tried your original js-line with a png and everything works. The 120px Thumbnail is created. So it seems to be a problem with the setup.
I used Alfresco Community 5.2 on Ubuntu Linux and the image.magick version provided by alfresco installer for the test.

Regards,
Martin
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- larade @ mehe on Sep 11, 2017 12:43 PM
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  Thank you Martin for your reply :-)
  
  Actually, I had modified the script mimetype line ('image/png'). I had the same error as you concerning the duplicate child name.
  
  I have the same version as you (5.2 Community and the default version of ImageMagick). Did you modify settings particularly?
  
  For additional info, I run the script with a rule on a folder? (as admin)
  
  Did you test the script that way too?
  
  Thanks in any case for your help :-)
  
  Olivier
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  - mehe @ larade on Sep 11, 2017 12:50 PM
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    I didn't modify any settings - but I installed the "missing libraries" (Installing Linux libraries manually | Alfresco Documentation ) before the Installation of Alfresco.
    When dealing with conversion problems, I add
    
    log4j.logger.org.alfresco.repo.content.transform.TransformerDebug=debug
    log4j.logger.org.alfresco.repo.content.transform.RuntimeExecutableContentTransformerWorker=debug
    log4j.logger.org.alfresco.util.exec.RuntimeExecBootstrapBean=debug
    log4j.logger.org.alfresco.util.exec.RuntimeExec=debug
    
    to the custom-log4j.properties in tomcat/shared/classes/alfresco/extension
    
    Using the mime types url (.../alfresco/service/mimetypes) you can see which conversions are possible for the configured mime type. The listing for image/jpeg is very long on my system.
    
    Martin
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    - larade @ mehe on Sep 11, 2017 2:06 PM
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      Thank you Martin for your responsiveness. I will look at the side of the libraries because I modified the file "custom-log4j.properties" like you without success. I'll let you know. It's amazing anyway.
      
      Olivier
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    - larade @ mehe on Sep 11, 2017 2:19 PM
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      Martin,
      Can you tell me if you have the same thing when you open in the list "Registered Mimetypes" jpg or png: I have this: Transformable To: Can not be transformed into anything else
      
      Olivier
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      - mehe @ larade on Sep 11, 2017 2:25 PM
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        As I said above, I have many entries for the conversions:
        
        image/jpeg - jpg
        Extractors: org.alfresco.repo.content.metadata.TikaAutoMetadataExtracter
        Transformable To:
        application/eps = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jng jpeg ltdl png tiff wmf)
        image/bmp = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jng jpeg ltdl png tiff wmf)
        image/cgm = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jng jpeg ltdl png tiff wmf)
        image/gif = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jng jpeg ltdl png tiff wmf)
        image/ief = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jng jpeg ltdl png tiff wmf)
        image/jp2 = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jng jpeg ltdl png tiff wmf)
        image/png = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jng jpeg ltdl png tiff wmf)
        image/tiff = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2...
        and so on...
        
        also for png:
        
        image/png - png
        Extractors: org.alfresco.repo.content.metadata.TikaAutoMetadataExtracter
        Transformable To:
        application/eps = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jng jpeg ltdl png tiff wmf)
        image/bmp = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jng jpeg ltdl png tiff wmf)
        image/cgm = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jng jpeg ltdl png tiff wmf)
        image/gif = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jng jpeg ltdl png tiff wmf)
        image/ief = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jng jpeg ltdl png tiff wmf)
        image/jp2 = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jng jpeg ltdl png tiff wmf)
        image/jpeg = Proxy via: com.sun.proxy.$Proxy27 (Version: ImageMagick 6.9.1-10 Q16 x86_64 2015-08-12 http://www.imagemagick.org Copyright: Copyright (C) 1999-2015 ImageMagick Studio LLC License: http://www.imagemagick.org/script/license.php Features: Cipher DPC Modules Delegates (built-in): freetype jn...
        and so on...
        
        also for the "Transformable from" Types.
        
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        larade @ mehe on Sep 11, 2017 2:31 PM
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        Thanks Martin. My problem certainly comes from that. I do not have that configuration.
        I will look at how to configure this part that is not configured by default in my case. (I'm under microsoft windows)
        It going :-) Thanks again :-)
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        mehe @ larade on Sep 11, 2017 2:47 PM
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        looks like image magick isn't working as expected on your installation. Tried to call it directly under Windows? Should work and give no errors.
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        larade @ mehe on Sep 12, 2017 9:36 AM
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        Hi Martin, Thank you for your help because by creating a file "imagemagick-transform-context.xml", I was able to find the settings you have in your file. The conversion works :-) Super! I use a bit but little you tell me when the image is resized if you have the correct exif (width and height). For in my case, the exifs are the same as the original. This causes me a problem because I have to use this image in a software that does not recognize it. Thanks again Martin, it's really nice to have answered my request. Olivier
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        mehe @ larade on Sep 12, 2017 11:33 AM
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        ...unfortunally my jpeg has no Exif information, but I think the EXIF tags are not updated by imagemagick's convert.
        identify shows nothing:
        identify -format '%[EXIF:*]' myimage.jpg
        exiftool shows info, but I think because there is no data, exiftool reads it from the physical jpeg data:
        ---- JFIF ----
        JFIF Version : 1.01
        Resolution Unit : cm
        X Resolution : 28
        Y Resolution : 28
        ---- Composite ----
        Image Size : 120x27
        Megapixels : 0.003
        
        if you could provide a sample, I could test the conversion...
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        larade @ mehe on Sep 12, 2017 2:04 PM
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        For example, the image I put in attachment has a size of 313X234, after conversion, properties other than the Mime / type have not changed. Actually, the command does not update the exifs, so the software or I have to insert the image Bmp does not accept. I think my problem will not be solved. I have at least advanced on the understanding of the operation of Alfresco.Thanks again Martin :-)
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        mehe @ larade on Sep 12, 2017 2:44 PM
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        What you can do: Configure a special transformer for your thumbnails and define a shell script/batchfile/Pythonprog/Javaclass for the conversion where the exif info is updated.
        See Content Transformers (and Renditions) | Alfresco Documentation
        The conversion done by Image magic convert seems to strip the exif information...
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        larade @ mehe on Sep 12, 2017 3:14 PM
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        Thank you Martin for the time spent :-).
        I'm going to move in that direction.
        Have a good evening :-)
        
        Olivier
        
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Transform a image with Javascript

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image/jpeg - jpg

image/png - png

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