By default, a dynamically loadable module is built for *magick (i.e.
`--with-magick=module`) when:
* ImageMagick or GraphicsMagick is found;
* GModule is supported (`gmodule_supported` pkg-config variable).
This can be overridden on the command line with:
* `--without-magick` - to disable *magick usage;
* `--with-magick[=yes]` - to restore the previous behavior;
* `--disable-modules` - to disable the build of dynamic modules.
By default, a dynamically loadable module is built for poppler (i.e.
`--with-poppler=module`) when:
* poppler is found;
* GModule is supported (`gmodule_supported` pkg-config variable).
This can be overridden on the command line with:
* `--without-poppler` - to disable poppler usage;
* `--with-poppler[=yes]` - to restore the previous behavior;
* `--disable-modules` - to disable the build of dynamic modules.
By default, a dynamically loadable module is built for libheif (i.e.
`--with-heif=module`) when:
* libheif is found;
* GModule is supported (`gmodule_supported` pkg-config variable).
This can be overridden on the command line with:
* `--without-heif` - to disable libheif usage;
* `--with-heif[=yes]` - to restore the previous behavior;
* `--disable-modules` - to disable the build of dynamic modules.
By default, a dynamically loadable module is built for OpenSlide (i.e.
`--with-openslide=module`) when:
* OpenSlide is found;
* GModule is supported (`gmodule_supported` pkg-config variable).
This can be overridden on the command line with:
* `--without-openslide` - to disable OpenSlide usage;
* `--with-openslide[=yes]` - to restore the previous behavior;
* `--disable-modules` - to disable the build of dynamic modules.
Some loaders were setting page-height even when the user was loading a
single page triggering unexpected multi-page behaviour from later
savers.
New rule: only set page-height when loading more than one page.
See https://github.com/libvips/libvips/issues/1318
but can't set meta correctly, try:
$ vipsheader -a sub-CC00050XX01_ses-7201_T2w.nii.gz
see all fields, but
$ vips copy sub-CC00050XX01_ses-7201_T2w.nii.gz x.v
$ vipsheader -a x.v
only see a few, odd
magicksave used to have its own Write struct to track write state.
Instead, keep the write state in the save class.
break the magick6/magick7 compat wrappers out into a separete file so they
can be shared with the loaders.
small style changes.
Lovell Fuller
John Cupitt
Kleis Auke Wolthuizen
Dirk Lemstra
Felix Bünemann