Use the bitwise OR assignment operator to ensure that derived
classes does not overwrite the flags from the base class. Also,
move the flags from `openslideload_source` to its base class.
Use GLib's i18n support instead of copying and pasting that
logic into its own header. This deprecates the vips/intl.h
header in favour of glib/gi18n.h.
When we image_new_from_source, the source object has some of the loader
state: it tracks the current read position of the load library. This
means that we mustn't keep source loaders in the operation cache, since
a second call could give a different result because the source object
read position might have changed.
Also: add a rewind to get_flags_source in spngload, and jp2k needs to
tag its load region as having no thread ownership or you'll get assert
fails in the test suite with debug enabled.
Webp decode can only shrink-on-load to int boundaries. This means that frames
in an animation which only update part of the canvas can get displaced by
up to 0.5 pixels, causing juddering.
see https://github.com/libvips/libvips/issues/2379
* allow utf-8 header for svg detection
We were checking that the first 24 chars of an SVG were plain ASCII,
but that's not always the case, for example:
<svg id="レイヤー_1のコピー"
data-name="レイヤー 1のコピー"
xmlns="http://www.w3.org/2000/svg"
viewBox="0 0 100 100">
</svg>
We now test for the string "<svg" being in the first 1000 bytes, and
everything up to that being valid utf-8.
See https://github.com/libvips/libvips/issues/2438
* raise priority of webpload
it was very low priority before, for some reason
various cosmetic changes:
- pngsave_buffer now uses Write, not WriteBuf, same change for
radsave_buffer
- move C wrappers out to class defs from foreign.c
- use g_free() not vips_free() for buffer free from low-level savers
- fix var names in some comments
- various style changes for radiance.c
John Cupitt
Kleis Auke Wolthuizen
Alistair Thomas