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Author SHA1 Message Date
John Cupitt
f2688ee6c1
Merge pull request #1679 from lovell/heifload-fixes-nclx-hdr 
heifload: ignore nclx colour profiles, ensure assumed uchar format
 2020-06-10 13:51:50 +01:00
Lovell Fuller
221ad1b9b3 heifload: ignore nclx profiles, ensure uchar format 2020-06-10 12:23:17 +01:00
Randy
2457e6768a fix enums 2020-06-09 20:04:03 +02:00
Randy
0ff30f972d revise spngload 2020-06-09 19:56:23 +02:00
John Cupitt
ce63fc1145 use libspng for load, libpng for save 2020-06-09 14:38:04 +01:00
Florian Heinrich
17a9bf393f Merge branch 'master' of https://github.com/libvips/libvips 2020-06-09 11:25:05 +02:00
Florian Heinrich
035e0bc756 Added read and write functionality for 2 and 4 bit greyscale TIF images 2020-06-09 11:23:28 +02:00
John Cupitt
ac96bb80b5 try revising spng FMT handling again 2020-06-09 02:38:38 +01:00
John Cupitt
f113e64515 update for latest spng 1/2/4 bit handling 2020-06-09 02:27:46 +01:00
John Cupitt
70a1dc0926 Revert "improve transparency support" 
This reverts commit 20c9a7f7cc.
 2020-06-09 02:04:55 +01:00
John Cupitt
ad73034a30 Merge branch 'master' into libspng-experiment 2020-06-09 02:03:40 +01:00
John Cupitt
dbae22ab58 revise unpremultiply 
We were clipping alpha very aggressively. With over- and under-shoot
ringing on edges, this could introduce extra fringes.

see https://github.com/libvips/libvips/pull/1675
 2020-06-08 18:47:28 +01:00
John Cupitt
20c9a7f7cc improve transparency support 2020-06-07 17:27:24 +01:00
John Cupitt
6705ff85b5 use INTERLACE_NONE 2020-06-07 15:29:48 +01:00
John Cupitt
fc872421aa add exif/icc/text text chunk read 
using new libspng 0.6 features
 2020-06-07 15:17:37 +01:00
John Cupitt
ef408d630b start adding ICC and XMP support 
not quite working though ... seems to need a fix in libspng still
 2020-06-07 14:00:10 +01:00
John Cupitt
a44814018d Merge branch 'master' into libspng-experiment 2020-06-07 11:56:16 +01:00
John Cupitt
981d5c4b16 revise autorot system 
- deprecate vips_autorot_get_angle() since orientation is no longer a
simple rotate
- add vips_image_get_orientation() and vips_image_get_orientation_swap()
- revise tiff and jpeg loader autorotate to just call vips_autorot(),
but only if necessary
- revise thumbnail autorotate too
 2020-06-06 17:25:46 +01:00
John Cupitt
30386db775
Merge pull request #1650 from wix-playground/master 
Handle mirrored orientations in autorot
 2020-06-06 14:46:15 +01:00
Kleis Auke Wolthuizen
d7a735400a reducev: Fix undefined-behaviour within the vector path 
Found by UBSan.
 2020-06-06 14:50:32 +02:00
Kleis Auke Wolthuizen
ac30bad695 Remove round-to-nearest behaviour 
It seems that it generates the same image, with or without this change.

Tested with https://github.com/kleisauke/vips-issue-703.
 2020-06-06 14:29:57 +02:00
Kleis Auke Wolthuizen
c0ed106079 Formatting and whitespace changes 2020-06-06 14:25:03 +02:00
Kleis Auke Wolthuizen
369b098096 Prefer an immediate calculation where possible 
In line with reducev.
 2020-06-06 14:21:15 +02:00
Kleis Auke Wolthuizen
dfdf899c92 Ensure reducev is THINSTRIP 
In line with reduceh.
 2020-06-06 14:16:24 +02:00
Kleis Auke Wolthuizen
b6e4e9e74b Speed up the mask construction for uchar/ushort images 
By not calling vips_vector_to_fixed_point repeatedly.
 2020-06-06 14:12:37 +02:00
Kleis Auke Wolthuizen
ac358ff4b8 Fix the pixel shift within reduce (#703) 2020-06-06 14:01:34 +02:00
John Cupitt
54c40249f8
Merge pull request #1673 from libvips/ome-tiff-pyramid 
Support for subifd image pyramids
 2020-06-05 13:35:21 +01:00
John Cupitt
d5eecac88c add note about plane separate write 2020-06-05 12:14:40 +01:00
John Cupitt
c82be3d30e read tiff metadata more carefully 
we were not always fetching the root metadata
 2020-06-04 05:07:34 +01:00
John Cupitt
6e1fd6136d safer directory set in tiff load 2020-06-03 16:41:29 +01:00
John Cupitt
0f57f3692b stop a compiler warning 2020-06-03 13:11:18 +01:00
John Cupitt
6d5a371147 add some tests for subifd pyramids 
fix a problem with jpg-compressed tiffs too
 2020-06-02 18:08:34 +01:00
John Cupitt
d74fe71764 better thumbnail behaviour for subifd pyramids 2020-06-02 14:23:14 +01:00
John Cupitt
cff84f4606 add subifd pyr support to thumbnail 
thumbnail can spot subifd pyramids and load lower levels if necessary
 2020-06-02 12:53:36 +01:00
John Cupitt
460e1d0bf5 set n-subifds for tiff files 
says how many subifds in the first page
 2020-06-01 17:22:10 +01:00
John Cupitt
d16f1e67dd fix tile clipping in toilet roll images 
we were not clipping unaligned tiled correctly
 2020-06-01 13:22:51 +01:00
John Cupitt
39af6c21c8 update notes 2020-06-01 00:55:19 +01:00
John Cupitt
0bdd2290a0 fix tiff directory mixup 
we were not always selecting the correct read directory
 2020-06-01 00:39:15 +01:00
John Cupitt
f0d4b36d7d better tiled tiff detection 
for tiffs with mixed strip and tile images
 2020-05-29 18:30:49 +01:00
John Cupitt
dc29f8dde6 add subifd select to tiff load 2020-05-28 12:40:31 +01:00
John Cupitt
9e4b78215e fix po 2020-05-27 16:30:04 +01:00
John Cupitt
aaebb3b346 fix thumbnail of mono image 
we were using RGB as the shrink space
 2020-05-27 15:24:27 +01:00
John Cupitt
474bfe3782 pytest and valgrind pass 
remove some dbg code
 2020-05-24 17:04:55 +01:00
John Cupitt
a2d196b736 add subifd support to the TIFF writer 
A new subifd switch enables the writing of pyramids layers into subifds
(rather than the default successive pages). This switch is enabled
automatically for multi-page pyramids.

seems to work in quick tests
 2020-05-24 15:21:41 +01:00
John Cupitt
6a8f128831 Merge branch 'master' into ome-tiff-pyramid 2020-05-22 16:12:00 +01:00
John Cupitt
ba0dea001d sort out premultiply rules for upsizing 
vips_resize() uses vips_affine() for upsizing and vips_reduce() for
downsizing. Affine automaticaly does a vips_premultiply() for images
with an alpha channel, but reduce does not. This meant that we could
sometimes premultiply twice.

This patch adds a "premultiplied" flag for affine which turns automatic
premultiuplication off, vips_resize() uses this to block affine's auto
premul feature, and the resize docs are clarified to stress that the
operation does not do premultiplication for you.

See https://github.com/libvips/libvips/issues/1629
 2020-05-19 14:31:34 +01:00
John Cupitt
44db1742fd tiny doc polish 2020-05-19 14:31:22 +01:00
John Cupitt
b4a9636e51
Merge pull request #1657 from lovell/improve-avif-detection 
Improve compile-time libheif and runtime AVIF detection
 2020-05-18 22:38:11 +01:00
Lovell Fuller
00dcfa40f1 Improve compile-time libheif and runtime AVIF detection 2020-05-18 19:43:43 +01:00
John Cupitt
951540f4fe revise text docs 
To clarify the meaning of VipsAlign in this context.

See https://github.com/libvips/libvips/issues/1654#issuecomment-629671463
 2020-05-16 17:57:31 +01:00