[MapProxy] Force PNG24 on single cache

[Oliver Tonnhofer]

Hi Just,


please try the following:

  services:
    wms:
      image_formats: ['image/jpeg', png8, png24]

…

  globals:
   image:
     formats:
       png8:
         format: image/png
         colors: 256
       png24:
         format: image/png; mode=24bit
         colors: 0



It would be great if you could update the docs if that works.


Regards,
Oliver

-- 
Oliver Tonnhofer  | Omniscale GmbH & Co KG  | http://omniscale.com
OpenStreetMap WMS and tile services         | http://maps.omniscale.com




> On 13.05.2015, at 12:38, Just van den Broecke <just at justobjects.nl> wrote:
> 
> Hi Oliver,
> 
> Was just posting when I saw your reply. Solved as follows:
> 
> caches:
>  opentopo_file_cache:
>    grids: [geonovum_grid, opentopo_extent_grid]
>    sources: [opentopo_wms]
>    format: png8
> 
>  relief_struct_file_cache:
>    grids: [geonovum_grid, opentopo_extent_grid]
>    sources: [relief_struct_wms]
>    format: png24
> .
> .
> 
> globals:
>  image:
>    resampling_method: bilinear
>    paletted: true # or false, see below
>    formats:
>      png24:
>        format: image/png
>        colors: 0
>      png8:
>        format: image/png
>        colors: 256
> .
> .
> 
> This setup allows to explicitly set either PNG8 or PNG24 per cache with PNG24 WMS-sources.
> 
> Remaining issue is to let the client choose either PNG24 or PNG8 on the MapProxy WMS, like:
> 
>  wms:
>    srs: ['EPSG:4326', 'EPSG:900913', 'EPSG:28992']
>    image_formats: ['image/jpeg', 'image/png', 'image/png; mode=24bit']
> 
> Though the latter does not seem to work. With the globals.image.paletted: true or false the MP WMS gives PNG8 or PNG24 repectively. Caches seem not affected by globals.image.paletted: true|false as long as the the above globals.image.formats.png8 or .png24 are set with each cache.
> 
> But glad that the initial issue is solved and may be of help to others.
> 
> Best,
> 
> Just
> 
> 
> On 13-05-15 11:03, Oliver Tonnhofer wrote:
>> Hi Just,
>> 
>> hard to tell with a complete configuration. But looking at the code it looks like MapProxy does not force an encoding to PNG24. It does this only for paletted image formats.
>> 
>> 
>> Regards,
>> Oliver
>> 
> 
> 
> 
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