mapimageio.c does not seem to utilize msIO output.

[warmerdam]

The mapscript script:

import mapscript

map = mapscript.mapObj( 'cnes.map')

req = mapscript.OWSRequest()
req.loadParamsFromURL( 'LAYERS=truemarble-gdal&FORMAT=image/jpeg&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application/vnd.ogc.se_inimage&SRS=EPSG%3A900913&BBOX=1663269.7343875,1203424.5723063,1673053.6740063,1213208.511925&WIDTH=256&HEIGHT=256')

mapscript.msIO_installStdoutToBuffer()
map.OWSDispatch( req )

does not prevent the jpeg output from going to stdout as expected. This appears to be due to a lack of msio support in the newish mapimageio.c code. This destroys the usefulness of the WxS MapScript scripting capability.

I'll take a crack at fixing this.

[warmerdam]

Preliminary support to capture direct writes to libjpeg, and libpng (r10996).

I'm not sure what more is required.

[tamas]

One further issue is with saveGdImage called from mapimageio.c line 861.

[warmerdam]

It looks like saveGdImage() needs to use the gdIOCtx versions of the GD save functions instead of the FILE * based versions, like we did in mapgd.c in 5.6.x and earlier. I'm going to leave this to address next week in Montreal.

[tbonfort]

aboudreault fixed the GD case in r11509