The vips driver program was parsing options in a single pass. This
failed if an option came in two parts, for example:
vips --plugin x.plg list
the argument to --plug would be picked up as the action for "vips",
since actions were selected before option parsing
Now we parse in two passes: the first pass picks up options for vips
itself and for the libvips library, then we select the action, then we
parse again, including any options created by the action
We were not capturing warnings from libtiff until we used libtiff
ourselves. Other libraries whcih we call, such as ImageMagick, could use
libtiff and generate an uncaptured warning.
On Windows these warnings each produced a popup.
you now get something like:
$ vips tiffsave k2.jpg x.tif --compression poop
tiffsave: enum 'VipsForeignTiffCompression' has no member 'poop', should be one of: none, jpeg, deflate, packbits, ccittfax4, lzw
previously, jpeg save always used pixels/inch and jpeg load converted to
vips pixels/mm
now on jpg load the image's res unit is recorded in
VIPS_META_RESOLUTION_UNIT, and on jpg save the res unit is set from
VIPS_META_RESOLUTION_UNIT (or defaults to inches).
you can now copy a cm-preferring tiff to a jpg and the unit is preserved
deprecated arguments still work, but are not shown in help, nor are they
checked for "have-been-set"
you can tag required and optional args as deprecated ... obviously if
you deprecate a required argument you must replace it with a new
argument or scripts will break
we were turning on ycbcr for all jpeg tiffs and relying on the jpeg
compressor to only use it when possible ... now just turn on ycbcr for
8-bit RGB images
- shrink down to a 1x1 pixel tile, even for very long and thin images
- round image size up on shrink
- write a .dzi file with the pyramid params
- default tile size and overlap now matches the openslide writer
thanks to Benjamin Gilbert for pointing out the errors
we used to have minor version numbers in the pkg-confiog files, eg:
pkg-config vips-7.28 --cflags
The idea was to make working with multiple installed versions (something
I do a lot at least) easier. But it was also annoying and made upgrading
harder for downstream packages. And the benefits were very marginal.
