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1929 Commits

Author SHA1 Message Date
John Cupitt
1a83605238 Merge branch 'add-heifload' 2019-02-17 17:11:14 +00:00
John Cupitt
044abe7986 fix some tilecache issues too 2019-02-16 15:32:45 +00:00
John Cupitt
bfa1f22520 works! 
tuned a bit too
 2019-02-14 15:22:51 +00:00
John Cupitt
931b661d2b fix up and test with im6/im7/gm 
seems to work! phew
 2019-02-07 18:35:51 +00:00
John Cupitt
8d5af9fe8a add xmp/ipct/icc etc. to magickload 
ImageMagick supports binary metadata with `ResetImageProfileIterator()`
etc.

Implementing support gives us xmp / ipct / icc support, plus perhaps
some others.
 2019-02-04 17:54:57 +00:00
John Cupitt
f23d0fd754 note new option_string param in changelog 2019-02-03 12:27:58 +00:00
John Cupitt
308c85c004 add support for stored heif thumbnails 2019-01-30 16:19:11 +00:00
John Cupitt
cae7838f86 heifsave seems to work 2019-01-29 16:40:34 +00:00
John Cupitt
33fd2a48f0 basic load works 
no metadata, no options
 2019-01-20 11:33:12 +00:00
John Cupitt
849d24472e revise changelog 
had Klies' magickload fix in there twice
 2019-01-18 12:52:04 +00:00
John Cupitt
dcba364efa Merge branch 'zero-mem-on-malloc' 2019-01-18 11:31:11 +00:00
John Cupitt
00622428bd zero memory on malloc 
to prevent write of uninit memory under some error conditions

thanks Balint
 2019-01-18 10:10:43 +00:00
John Cupitt
00982f6297 add changelog notes 
and small formatting issues
 2019-01-15 09:36:31 +00:00
John Cupitt
bcc76c6edb Merge branch 'master' into tiff-pyr-stop-at-1-pixel 2019-01-12 15:48:17 +00:00
John Cupitt
f768029298 make the savers use profile_load 
tiff, jpeg and png save all use profile_load to attach profiles
 2019-01-11 06:30:06 +00:00
John Cupitt
28999aa5b6 add vips_profile_load() 
and use it in icc_transform
 2019-01-10 22:48:21 +00:00
John Cupitt
960324b08a Merge branch 'master' into add-icc-fallbacks 2019-01-10 15:48:37 +00:00
John Cupitt
5bc342b9b2 revise changelog in magickload fix 2019-01-08 09:05:39 +00:00
John Cupitt
a293da4b5a Merge branch '8.7' 2019-01-04 10:36:59 +00:00
John Cupitt
63c6c7ae30 fix small magicksave error 
copy-paste fail meant that IM exceptions were not inherited correctly

see 1619c8b1a1 (commitcomment-31838043)
 2019-01-04 10:34:30 +00:00
John Cupitt
87062c4a4f Merge branch '8.7' 2019-01-04 09:19:04 +00:00
John Cupitt
1619c8b1a1 fix memleak in magick6load 
IM ExceptionInfo were not being freed correctly. This patch
adds a small wrapper function and uses it to allocate and free all IM
exception objects.

Tested with im 6.9 and gm 1.3.

See:

https://github.com/libvips/lua-vips/issues/24

https://github.com/libvips/libvips/issues/1203
 2019-01-04 08:38:58 +00:00
John Cupitt
b8a158b69b seems to work 
added some more consts as well
 2019-01-03 13:34:13 +00:00
John Cupitt
020ff88f6a Merge branch 'master' into dzsave-skip-blanks 2019-01-02 11:00:42 +00:00
John Cupitt
f611845698 Merge branch 'master' into add-CMYK2XYZ 2018-12-31 14:02:51 +00:00
John Cupitt
6c72ca45b7 Merge branch '8.7' 2018-12-29 22:56:58 +00:00
John Cupitt
9d66420ad5 round to nearest in log scale 
we were doing round to nearest in linear mode, but not log

see https://github.com/libvips/build-win64-mxe/issues/3
 2018-12-29 20:19:38 +00:00
John Cupitt
c5d0ca8300 add cmyk2xyz and back 
seems to work, still to do:

- tests
- try:

```
$ vipsthumbnail NordicsLIQUOR-SFBag_300_cmyk.JPG

(vipsthumbnail:7868): VIPS-WARNING **: 16:53:17.166: profile incompatible with image
```

see https://github.com/libvips/libvips/issues/1186
 2018-12-27 17:35:35 +00:00
John Cupitt
d35343f817 stop making tiff pyr if axis drops to 1 
TIFF pyramids of images with a very extreme aspect raio could see layer
width or height drop to 0 before the image fitted in a single tile. This
change stops pyramid creation when width or height drop to 1.

See https://github.com/libvips/libvips/issues/1188
 2018-12-21 14:47:28 +00:00
John Cupitt
51dbf607dd add skip-blanks option to dzsave 
Skip-blanks was a feature of google layout. This patch makes it into an
option you can control which defaults on in gm mode.

See https://github.com/libvips/libvips/issues/1185
 2018-12-19 14:52:33 +00:00
John Cupitt
1ee5b13205 Merge branch '8.7' 2018-12-17 13:21:28 +00:00
John Cupitt
582b224125 oops revert version bump 2018-12-17 13:20:14 +00:00
John Cupitt
962cab2d0f Merge branch '8.7' 2018-12-17 13:18:58 +00:00
John Cupitt
db4fe60405 fix mapim offsets 
pixels were not being offset by the stencil origin, so interpolators
like bicubic could fail

thanks @erdmann

https://github.com/libvips/libvips/issues/1180
 2018-12-17 12:42:34 +00:00
John Cupitt
6bc564a1e1 turn on smalltile 
2D locality helps a lot with many subimages
 2018-12-07 16:43:44 +00:00
John Cupitt
58776970ec Merge branch 'master' into revise-composite 2018-12-07 14:31:56 +00:00
John Cupitt
0dccfc87b6 Merge branch '8.7' 2018-12-07 14:30:00 +00:00
John Cupitt
da31d0f31a fix autofit loop on non-scaleable fonts 
see https://github.com/libvips/libvips/issues/1178
 2018-12-07 12:57:44 +00:00
John Cupitt
7b19ad8dc1 composite subimage positioning almost done 
--x fails though? odd

vips composite2 Gugg_coloured.jpg PNG_transparency.png x.jpg over --x 600 --y 100

--x causes the dice to clip, but not translate
 2018-12-06 18:28:55 +00:00
John Cupitt
d550016610 Merge branch 'master' into revise-composite 2018-12-06 16:05:25 +00:00
John Cupitt
5fa4ae08da Merge branch '8.7' 2018-12-05 17:37:25 +00:00
John Cupitt
ac4897abee Fix up vips_text() 
Fixes two issues:

1. vips_text() in autofit mode could set the wrong DPI, since it set the
DPI in its own copy of the variable, but did not do a final update on
the DPI setting that FT uses for rendering.

2. vips_text() in autofit mode allocated a new context each time, rather
than reusing the context for that call. This caused a small memory leak.

See https://github.com/libvips/libvips/issues/1174
 2018-12-05 14:24:26 +00:00
John Cupitt
2c26c23163 composite in scanlines, not pixels 
try compositing a scanline at a time, should improve cache locality for
deep image stacks

seems to work, needs benchmarking
 2018-11-27 18:27:38 +00:00
John Cupitt
0669cf2a23 Merge branch 'master' into add-webp-animated 2018-11-23 17:41:09 +00:00
John Cupitt
cff4af34ca add vips_image_set_blob_copy() 
and use it where we can
 2018-11-23 16:27:39 +00:00
John Cupitt
d4815e8b7e more info output for tmpfile open 
to help diagnose problems
 2018-11-21 14:26:52 +00:00
John Cupitt
6b9d89b103 add pyr tiff shrink-on-load for thumbnail 2018-11-16 18:00:25 +00:00
John Cupitt
26d0e312c6 add bandand/or/eor to the cpp binding 
oops, they had been dropped

thanks clcaalu

see https://github.com/libvips/libvips/issues/1165
 2018-11-16 13:10:22 +00:00
John Cupitt
07d58f81b3 fix cast on uint images 
we could get sign and overflow mixed up for casts on uint images

see https://github.com/libvips/nip2/issues/74
 2018-11-14 17:07:49 +00:00
John Cupitt
3e070cbcdf Merge branch 'master' into add-webp-animated 2018-11-05 16:26:45 +00:00
John Cupitt
17c9856e38 add n/page support for webp read 2018-11-05 16:21:21 +00:00
John Cupitt
d6c7d86e12 Merge branch '8.7' 2018-11-05 10:41:46 +00:00
John Cupitt
0bea76d364 fix temp file open 
was not auto-deleteing on windows, needs a fallback on linux

see https://github.com/libvips/libvips/pull/1155
 2018-11-05 10:40:51 +00:00
John Cupitt
7c6f417e68 fix some typos ... it works! 
need to add support for delay and loop still
 2018-10-31 16:52:09 +00:00
John Cupitt
22ba9106b5 implement shrink-on-load for openslide thumbs 
makes vipsthumbnail much quicker on openslide images, obviously

see https://github.com/libvips/libvips/issues/1149
 2018-10-31 14:07:13 +00:00
John Cupitt
0b050f4046 deprecate thumbnail auto_rotate, add no_rotate 
the auto_rotate option of thumbnail was default TRUE which made it
useless from the CLI, since GOption only allows --switch, not
--switch=false

deprecate auto_rotate, add no_rotate, but allow either to be used

see https://github.com/libvips/libvips/issues/1146
 2018-10-31 12:30:37 +00:00
John Cupitt
6be70e6799 add xmp load/save for png 
plus a test
 2018-10-06 11:54:27 +01:00
John Cupitt
703498aa81 Merge branch '8.7' 2018-10-01 21:23:48 +01:00
John Cupitt
0fea113bbf fix build on older glibs 
we were using g_str_to_ascii(), but it was only added in glib 2.40

see https://github.com/libvips/libvips/issues/1117
 2018-10-01 20:15:34 +01:00
John Cupitt
9ac5a449f2 add low/high to smartcrop 
smartcrop attention had a centre setting, but not low or high

see https://github.com/libvips/libvips/issues/1089
 2018-09-22 14:47:40 +01:00
John Cupitt
b552dd0503 version bump to get ready for the vips 8.8 cycle 2018-09-21 15:10:39 +01:00
John Cupitt
f3de6a9521 update function list in docs 
thanks janko-m

see https://github.com/jcupitt/libvips/issues/1097
 2018-09-20 08:26:51 +01:00
Kleis Auke Wolthuizen
b5b756b817 Add vips_object_get_args 
Handy for language bindings.
 2018-08-19 22:42:26 +02:00
John Cupitt
f4250ab7ab scale openexr alpha up 
scale alpha up to 0 - 255 to match the rest of libvips
 2018-08-19 10:53:54 +01:00
John Cupitt
643e7c0ea2 mapim fix for strange float values 
mapim could fail for float index images outside the int range

minor speedup too
 2018-08-12 17:10:23 +01:00
John Cupitt
0b3565c04d update radiance load from upstream 
thanks Greg Ward
 2018-08-03 18:31:31 +01:00
John Cupitt
e89dac20bb add sniffing framework to magickload 
though it only spots ICO for now

see https://github.com/jcupitt/pyvips/issues/39
 2018-07-24 17:38:36 +01:00
John Cupitt
72f589764a remove the @format param to magickload 2018-07-24 17:03:38 +01:00
John Cupitt
2d94fe732a escape ASCII control chars in xml 
stops some XML parse errors on corrupt metadata

see https://github.com/jcupitt/libvips/issues/1039
 2018-07-23 14:55:37 +01:00
John Cupitt
3d5b0b814f merge in test suite 2018-07-20 13:58:27 +01:00
John Cupitt
3201b4373d Merge branch 'master' into add-nifti-support 2018-07-20 13:57:51 +01:00
John Cupitt
d03416d386 works! 
just needs some tests

could be faster too
 2018-07-19 17:45:54 +01:00
John Cupitt
d06c2fee22 use exif_tag_get_name_in_ifd() everywhere 
exif tag names change with the ids they appear in, so you must always
use exif_tag_get_name_in_ifd(), not exif_tag_get_name()

see: https://github.com/jcupitt/libvips/pull/1030
 2018-07-09 09:35:39 +01:00
John Cupitt
d510807e90 vmoe the test suite back into libvips 2018-07-06 15:43:20 +01:00
John Cupitt
3a9adbcea9 seems to work 
could probably add some more fields
 2018-07-03 16:36:39 +01:00
John Cupitt
35b4a1a3b5 fix mem leak in pngsave 
and some reformatting and changelog notes
 2018-06-20 14:20:22 +01:00
John Cupitt
a373d2c876 add changelog notes for region_shrink 2018-06-13 17:36:36 +01:00
John Cupitt
539cc0616c Merge branch '8.6' 2018-06-13 16:24:20 +01:00
John Cupitt
e6edcfe20d improve accuracy of vector path 2018-06-13 16:23:21 +01:00
John Cupitt
3b1e3e1841 add Mitchell kernel 
see https://github.com/jcupitt/libvips/issues/966
 2018-06-12 12:55:10 +01:00
John Cupitt
cc29a13cc7 revise composite position code slightly 
- move x/y into composite and out of composite base, have separate x/y int
params for composite2
- upsize later for a small speed improvement
- doc comment
- note in changelog

see https://github.com/jcupitt/libvips/pull/934
 2018-06-11 17:04:29 +01:00
John Cupitt
0e3cac1a72 make cpp overloads const 
all overloads are declared const now, where possible

also revised cpp examples and ran them to check

see https://github.com/jcupitt/libvips/issues/983
 2018-06-11 15:24:11 +01:00
John Cupitt
ca6410e1a6 make members and getters "const" in cpp api 
eg. VImage::width() is now

	int VImage::width() const;

ie. it does not alter the image objects. In factr we can mark almost all
members const.

see https://github.com/jcupitt/libvips/issues/983
 2018-06-11 14:30:17 +01:00
John Cupitt
87b3f17846 vips7 API defaults off 2018-06-11 12:44:28 +01:00
John Cupitt
fb64d3607a add @background option to pdfload 
Add a "background" option to pdfload to help support PDFs with a
transparent background. For example:

	vips copy transparent.pdf[background=0] x.png

see https://github.com/jcupitt/libvips/issues/995
 2018-06-08 10:28:00 +01:00
John Cupitt
5ec605c98c Merge branch '8.6' 2018-06-01 23:05:16 +01:00
John Cupitt
a3394dc756 fix webp metadata save with webpmux 
see https://github.com/jcupitt/libvips/pull/989
 2018-06-01 23:01:33 +01:00
John Cupitt
e9aaedc60a fix some compiler warnings 
from the msvc patch
 2018-06-01 19:44:43 +01:00
John Cupitt
86a1a0a7e2 Merge branch '8.6' 2018-05-29 19:30:46 +01:00
John Cupitt
7e95ae514d don't use ping in magickload 
too unreliable, sadly
 2018-05-29 19:29:11 +01:00
John Cupitt
0486218ff5 don't use Ping in magickload 
it's too unreliable :-( we are forced to read every time
 2018-05-29 17:20:46 +01:00
John Cupitt
d251b37d92 add vips_argument_get_id() 
We had a global we incremented to allocate property ids, but of course that
won't work with DLLs. Instead, add vips_argument_get_id() and call that to
allocate new prop ids.

See:

https://github.com/jcupitt/libvips/issues/985
 2018-05-29 16:49:20 +01:00
John Cupitt
4058312aee fix a TGA ping crash 
see https://github.com/jcupitt/libvips/issues/980
 2018-05-25 16:40:50 +01:00
John Cupitt
73a55e0322 update ChangeLog 2018-05-25 16:06:05 +01:00
John Cupitt
b085908558 remove vips7 stuff from API 
You must now include vips7 support explicitly with

	#include <vips/vips7compat.h>

in your code just after including `vips.h`.

The old vips7 names, such as `Rect`, were starting to cause problems
with other packages like opencv.
 2018-05-16 15:08:21 +01:00
John Cupitt
fd7b04fb9d Merge branch '8.6' 2018-05-14 18:10:13 +01:00
John Cupitt
5b132ccbdc note new config test in changelog 2018-05-14 17:19:06 +01:00
John Cupitt
e496df598b working! 2018-05-01 15:50:48 +01:00
John Cupitt
4d683559aa add a fontfile option to text 
use @fontfile to give a font to load ... note that this just loads the
font, you'll need to set it with @font as well

see https://github.com/jcupitt/libvips/issues/950
 2018-04-26 21:03:40 +01:00
John Cupitt
da6f4fd043 add n-pages metadata item 
tiff, magick and pdf load now attach an n-pages metadata item recording
the number of pages in the orginal file

see https://github.com/jcupitt/libvips/issues/953
 2018-04-26 08:55:31 +01:00
John Cupitt
4f22e8d1dc add jpeg-chroma-subsample to jpegload 
The jpeg loader now sets the field jpeg-chroma-subsample to record
chroma subsample.

See https://github.com/jcupitt/libvips/issues/954
 2018-04-25 16:04:20 +01:00
John Cupitt
c410dc2db8 add format option to magickload 
Some magick coders (eg. ICO) don't sniff the filetype from the data, so
when you try to load from a string, imagemagick is unable to pick the
right decode path.

Add a @format option so callers can hint the filetype.

see https://github.com/jcupitt/pyvips/issues/39
 2018-04-24 15:06:52 +01:00
John Cupitt
c0569d25bf final fixups 
- add buffer load
- test under valgrind
- code sharing with the poppler pdf loader
 2018-04-11 18:53:38 +01:00
John Cupitt
5b55dd8ed4 Merge branch '8.6' 2018-04-11 09:38:59 +01:00
John Cupitt
d1dd41a21f strict round down on jpeg shrink 
libjpeg rounds up on shrink-on-load. In some cases this can leave a dark
line along the right and bottom edge, since it only contains (for
example) 1/4 of a pixel of data.

This change adds a crop after jpeg load so that only complete pixels are
output.

See https://github.com/lovell/sharp/issues/1185
 2018-04-10 15:18:18 +01:00
John Cupitt
15abbbe986 set "interlaced" for jpg and png 
set "interlaced" for interlaced png and jpg images
 2018-04-09 17:14:38 +01:00
John Cupitt
06802e4110 use O_TMPFILE, if available 
If O_TNMPFILE is available, use it. This is a linux extension that
creates an unlinked file, so it'll be closed by the system when the last
associated fd is closed.

see https://github.com/jcupitt/libvips/pull/930
 2018-04-09 13:27:57 +01:00
John Cupitt
f3842dcc4b update cpp example 
thanks fangqiao

see https://github.com/jcupitt/libvips/issues/932
 2018-04-08 11:44:15 +01:00
John Cupitt
5f3bcd88ae Merge branch '8.6' 2018-04-04 17:11:16 +01:00
John Cupitt
632bce3c78 reduce stack use for radsave 
fixes a crash on very low stack libcs like musl
 2018-04-04 16:25:35 +01:00
John Cupitt
aebb8af803 create funcs always make MULTIBAND 
Before, they could make B_W for one-band output. This caused problems
with (for example) two black image bandjoined: the second band then
looked like an alpha to hasalpha() and enabled premultiply/unpremultiply
for operations like affine.

Now, it's always MULTIBAND. This is the generic multiband image type, so
you don't get any unexpected alpha handling.
 2018-04-04 09:22:57 +01:00
John Cupitt
0dd6b095aa more conservative hasalpha 
The result of hasalpha is used to turn on things like
premultiplication, so we should be rather conservative
about when we signal this. We don't want to premultiply
things that should not be premultiplied.

Check Type as well as bands.

See: https://github.com/jcupitt/libvips/issues/918
 2018-04-03 14:36:43 +01:00
John Cupitt
e686614f2c drop incompatible profiles from save 
libpng has started throwing hard errors if the profile does not match
the image -- this can happen all the time with perofiles inherited from
images that have been processed.

Test profiles before save and drop them (with a warning) if they are
incompatible with the image.
 2018-04-01 10:32:48 +01:00
John Cupitt
5176b4a17e better header sniffing for small files 
vips__get_bytes() used to fail if the file was too small for the
allocated buffer, which was a problem for svg, since files can be extremely
small.

This change makes vips__get_bytes() return the number of bytes read, so
the is_a testers can work on files smaller than the max header size.
 2018-03-22 12:08:39 +00:00
John Cupitt
5a1ab5968b move svg_ia_a into the base class 
feels a bit more logical
 2018-03-22 10:43:01 +00:00
John Cupitt
754a1e5419 Merge branch 'master' into add-canny 2018-03-14 14:18:39 +00:00
John Cupitt
206f158a77 Merge branch '8.6' 2018-03-12 18:12:56 +00:00
John Cupitt
878c77a035 better handling of some fonts 
fonts with very large overlapping edges copuld clip in `text`, see
https://stackoverflow.com/a/49169747/894763
 2018-03-12 18:11:25 +00:00
John Cupitt
08dcf29b10 add vips_rotate() 
vips_similarity() was a little hatrd to discover, so add vips_rotate()
as a more obvious name for it
 2018-03-10 18:45:39 +00:00
John Cupitt
5834779ac6 Merge branch 'master' into add-canny 2018-03-10 15:13:49 +00:00
John Cupitt
0a05dd4304 Merge branch '8.6' 2018-03-09 16:37:10 +00:00
John Cupitt
29e05dabaf icc_import attaches the input profile if used 
icc_import can take a fallback input profile in case the embedded one is
broken or missing. If we use the fallback profile, this change attaches
it to the output image.

This means that icc_import will always output an image with the icc
profile that was used to import it. This helps to make the behaviour of
`thumbnail` more consistent.

See https://github.com/jcupitt/libvips/issues/152
 2018-03-08 13:11:54 +00:00
John Cupitt
6e0e31a534 Merge branch '8.6' into add-canny 2018-03-05 15:21:30 +00:00
John Cupitt
6fae79b60d Merge branch '8.6' 2018-03-05 15:09:08 +00:00
John Cupitt
20d840e6da fix a crash with delayed load 
If a delayed load failed, it could leave the pipeline only half-set up.
Sebsequent threads could then segv.

Set a load-has-failed flag and test before generate.

See https://github.com/jcupitt/libvips/issues/893
 2018-03-05 14:42:09 +00:00
John Cupitt
7f5b0b94c3 Merge branch '8.6' into add-canny 2018-03-04 18:45:59 +00:00
John Cupitt
881a10380e Merge branch '8.6' 2018-03-04 18:45:51 +00:00
John Cupitt
eefb2dad98 improve rounding in convi intize 
We were rounding up with ceil() when intize-ing convolution masks.
However, the vector path has a true range of (1.0, -1.0], so a mask with
1.0 as the max (for example) was actually triggering the overflow detector
and falling back to the C path.

Round up with ceil(x + 1) instead, so 1.0 (for example) will be mapped
to 0.5 and won't overflow.
 2018-03-04 18:30:25 +00:00
John Cupitt
bca2418d9a Merge branch 'master' into add-canny 2018-03-04 15:31:19 +00:00
John Cupitt
e7a5a8af4a Merge branch '8.6' 2018-03-04 15:31:08 +00:00
John Cupitt
6cff74b602 vips_image_write() could crash if called twice 
two writes in a row could trigger a crash in some circumstances, thanks
@dirceupj

see https://github.com/jcupitt/ruby-vips/issues/156
 2018-03-04 15:14:06 +00:00
John Cupitt
4a59fa652c make vips_sobel() 
cut out of vips_canny()
 2018-02-26 18:33:20 +00:00
John Cupitt
a9b4aeb13a Merge branch '8.6' 2018-02-21 19:01:43 +00:00
John Cupitt
bbe42e13fa version bump 2018-02-12 12:39:53 +00:00
John Cupitt
ce1f236c4d another 2x faster on hough_line 2018-02-02 09:12:31 +00:00
John Cupitt
78db92e60e better hough_line 
2x faster, better parameter space, but breaks compat :( sorry
 2018-02-01 20:41:14 +00:00
John Cupitt
5a4b4e196d allow remove thumbnail from exif 
if the user has removed (or set to NULL) the "jpeg-thumbnail-data" tag,
remove it from the image EXIF on save

see https://github.com/jcupitt/ruby-vips/issues/147
 2018-02-01 16:15:02 +00:00
John Cupitt
749f4a902a Merge branch '8.6' 2018-01-31 20:47:01 +00:00
John Cupitt
e8958cb8ae improve changelog 2018-01-31 20:45:14 +00:00
John Cupitt
01eed391ab add sync locks to vips_sink() 
vips_sink() used to just fire off threads willy nilly -- this could
cause problems with sequential images if a worker fell too far behind
the pack

copy over the area locking mechanism from vips_sink_memory(): new
threads are now stalled if an old thread has not finished
 2018-01-31 16:25:06 +00:00
John Cupitt
421f659d33 allow 1 mode in composite 
reused for all joins

see https://github.com/jcupitt/pyvips/issues/30
 2018-01-30 10:12:03 +00:00
John Cupitt
5fd2ecf81d remove limit on n image in composite 
composite was limited to a max of 64 images ... remove the limit

see https://github.com/jcupitt/pyvips/issues/30
 2018-01-30 09:48:34 +00:00
John Cupitt
4865141afa szi save will write associated images 
if they have been attached by openslide load
 2018-01-28 16:39:13 +00:00
John Cupitt
28391dbfc7 option to attach associated images as metadata 
you now see:

```
$ vipsheader -a CMU-1.svs[attach_associated] | grep ass
openslide.associated.label: 387x463 uchar, 4 bands, rgb
openslide.associated.macro: 1280x431 uchar, 4 bands, rgb
openslide.associated.thumbnail: 1024x732 uchar, 4 bands, rgb
slide-associated-images: label, macro, thumbnail
```
 2018-01-27 16:43:58 +00:00
John Cupitt
de2e3e3299 add vips_image_(get|set)_image() 
so images can have other images as metadata
 2018-01-27 14:49:33 +00:00
John Cupitt
21e1e68771 write scan-properties.xml to szi 
see https://github.com/jcupitt/libvips/issues/853
 2018-01-26 17:20:58 +00:00
John Cupitt
c46f4b15e0 dzsave to szi sets extension correctly 
see https://github.com/jcupitt/libvips/issues/852
 2018-01-26 15:36:43 +00:00
John Cupitt
97a4ed2ca9 fix a c++ warning 
see https://github.com/jcupitt/libvips/pull/864
 2018-01-26 07:56:43 +00:00
John Cupitt
39406877a2 Merge branch '8.6' 2018-01-12 17:23:24 +00:00
John Cupitt
94daa18884 fix read of plane-separate, large-strip tiff 
TIFFReadScanline() is too fiddly to use on plane-separate, large-strip
images ... ban it!

see https://github.com/jcupitt/libvips/issues/855
 2018-01-12 17:04:47 +00:00
John Cupitt
18f530c724 Merge branch '8.6' 2018-01-12 12:02:41 +00:00
John Cupitt
24c07cfde2 revert an accidental ABI break 
the new window manager code in 8.6.1 changed the prototype of an internal
function which was visible in the public API

this patch renames the function, adds it to an internal header instead,
and adds a stub for the old prototype

see https://github.com/jcupitt/libvips/issues/854
 2018-01-12 11:56:17 +00:00
John Cupitt
925667f8d3 Merge branch '8.6' 2018-01-05 16:29:56 +00:00
John Cupitt
1b89d62eb5 fix a race associated with sink_screen 
sink_screen was not keeping a ref to its input, so in rare conditions
it could try to make a region on a dead image
 2018-01-05 16:27:44 +00:00
John Cupitt
68e0067840 note rgb->g improvement 2018-01-03 08:34:15 +00:00
John Cupitt
4c2434ab67 fix memleak in dzsave 
tree elements were not being freed, thanks lovell

see https://github.com/jcupitt/libvips/issues/837
 2018-01-01 11:40:04 +00:00
John Cupitt
39ab05469f Merge branch '8.6' 2017-12-31 12:57:57 +00:00
John Cupitt
9febc3ac3e seq could be set on small random images 
images under the disc threshold opened in random access mode from
sequential loaders would have the seq tag set on them, causing
performance problems with vips_resize()

see https://github.com/jcupitt/libvips/issues/840
 2017-12-31 12:56:11 +00:00
John Cupitt
a128149009 Merge branch '8.6' 2017-12-31 10:39:36 +00:00
John Cupitt
77287a938f fix misspelling of IPTC as IPCT 
the letters have been accidentally swapped for years

add a compat macro so older code still works
 2017-12-31 10:23:27 +00:00
John Cupitt
e12df167e6 Merge branch 'magicksave' of https://github.com/dlemstra/libvips into dlemstra-magicksave 2017-12-23 12:39:50 +00:00
John Cupitt
eea8b61f3f tiny cleanup 
make the code for error during jpeg buffer write a little cleaner --
rather than calling the jpeg term method ourselves, have a separate
destroy function for the write buffer
 2017-12-19 08:56:51 +00:00
John Cupitt
424b359d33 bump wrapper script version 
and add a test too

see https://github.com/jcupitt/libvips/issues/834
 2017-12-17 10:50:57 +00:00
John Cupitt
19e2e2e208 add credit to changelog 2017-12-16 10:01:04 +00:00
John Cupitt
f4f9667406 remove the 64 image limit on bandary 
any number of input images now

see https://github.com/jcupitt/libvips/issues/822
 2017-12-15 14:21:31 +00:00
John Cupitt
3c0a2e4837 fix window cycling 
we were repeatedly free-ing and new-ing input mmap windows ... this made
things like zoom out on large images in nip2 much slower than they
needed to be
 2017-12-10 17:37:07 +00:00
John Cupitt
e9b7231ac0 add "extend" option to affine 
so for upsizing with displacement (like resize) we can prevent dark
edges on bright images

see

https://github.com/jcupitt/php-vips/issues/61
 2017-12-07 14:51:07 +00:00
John Cupitt
60bd5f6512 add composite2 to notes 2017-12-01 13:37:15 +00:00
John Cupitt
13a693c8bc Merge branch 'master' into add-extra-dzsave-tiles 2017-12-01 13:33:54 +00:00
John Cupitt
9c8790b40a setting EXIF data blocks sets other tags too 
calling vips_image_set() to set the EXIF data block VIPS_META_EXIF_NAME
will automaticaly set other tags, like orientation etc.
 2017-11-27 15:15:21 +00:00
John Cupitt
10eef89a7f update c++ bindings 2017-11-26 17:45:04 +00:00
John Cupitt
406e228c9b vips_resize() is always centre convention 
it was corner for downsize, but should be centre to match imagemagick
 2017-11-26 15:24:40 +00:00
John Cupitt
7db13412e5 deprecate centre option to resize 
it's now centre on upsize, corner on downsize

see https://github.com/jcupitt/libvips/issues/705
 2017-11-25 14:22:20 +00:00
John Cupitt
5664a0d9b1 dzsave outputs extra tiles along right and bottom 
the deepzoom spec wants tiles to be written along the right and bottom,
even of those tiles contain no new pixels

this patch seems to work, but needs testing

see: https://github.com/jcupitt/libvips/issues/795
 2017-11-24 15:54:22 +00:00
John Cupitt
6a4b249445 add dispose handling 
see https://github.com/jcupitt/php-vips/issues/59
 2017-11-22 17:37:31 +00:00
John Cupitt
27621733f2 add gif-comment 2017-11-22 13:10:06 +00:00
John Cupitt
e56282e1fd add gif-loop metadata 
see https://github.com/rokka-io/imagine-vips/issues/3
 2017-11-21 16:04:18 +00:00
John Cupitt
a4b89aa370 credit for affine fixup 2017-11-18 15:11:02 +00:00
John Cupitt
fcec6d639b fix jaggies on the edge of affine output 
and add a "background" param
 2017-11-17 16:30:25 +00:00
John Cupitt
4ea743f5e6 add combine mode to find_indexed 2017-11-03 16:36:09 +00:00
John Cupitt
487c112807 add VIPS_COMBINE_MIN combining mode 
for vips_compass()
 2017-11-02 12:34:01 +00:00
John Cupitt
55e577a2fb rename nearest as fill_nearest 
avoid a clash with the nearest-neighbour interpolator
 2017-11-01 15:06:37 +00:00
John Cupitt
cdc286e9d6 switch to float distance calculations 
removes dithering effects along edges
 2017-11-01 13:16:36 +00:00
John Cupitt
3b75b1e2ac fix gcc7 build 
removed exception specs from deprecated C++ binding
 2017-10-24 09:31:23 +01:00
John Cupitt
5ec1d5b72f fix vipsthumbnail --size Nx 
oh dear, width but not height size specs to vipsthumbnail were not working

thanks jrochkind

see https://github.com/jcupitt/libvips/issues/781
 2017-10-23 22:27:23 +01:00
John Cupitt
dd503c03c6 add vips_value_set_blob_free() 
simpler for language bindings to call
 2017-10-19 16:37:43 +01:00
John Cupitt
68ed42e2fa make linear and cubic adaptive 2017-10-15 22:09:44 +01:00
John Cupitt
008fd21728 all done 2017-10-14 17:03:48 +01:00
John Cupitt
135d7a4dfb Merge branch '8.5' 2017-10-11 12:57:18 +01:00
John Cupitt
b4a6e6e309 spelling 2017-10-11 11:24:43 +01:00
John Cupitt
fd1d332892 update change notes 2017-10-11 10:12:01 +01:00
John Cupitt
40f20e5e0a Merge branch 'master' into gargsms-text-autofit 2017-10-10 13:04:31 +01:00
John Cupitt
12db3e936c Merge branch '8.5' 2017-10-09 22:35:29 +01:00
John Cupitt
6f16a9df71 fix a crash with heavy use of draw 
we were leaving a few bits of the original image around after
vips_image_copy_memory(), including the progress signal ... if earlier images
were freed, perhaps by a GC in a language binding, we could get a dangling
pointer

thanks Nakilon, see https://github.com/jcupitt/ruby-vips/issues/140
 2017-10-09 22:27:36 +01:00
John Cupitt
3f22424d3b test for gcc4 and ban vectors 
it has severe code gen problems, it seems

this seems to ban clang as well, unfortunately
 2017-10-07 11:20:21 +01:00
John Cupitt
aae5babfcc Merge branch 'master' into add-composite 2017-10-01 19:37:26 +01:00
John Cupitt
560f8ac727 add goi note to changelog 
see https://github.com/jcupitt/libvips/issues/741
 2017-10-01 19:35:44 +01:00
John Cupitt
4b24d82e8c some cleanups, a bit quicker 
it now has separate premultiplied and not-premultiplied paths
 2017-09-27 17:32:05 +01:00
John Cupitt
64be1d89b5 add gravity 2017-09-20 00:43:17 +01:00
John Cupitt
b2f66a3968 add note on svgload improvement 2017-09-17 05:20:48 +01:00
John Cupitt
e346fd639e built-in python bindings default to off 
we still make a typelib by default though

use the new pyvips binding instead, "pip install pyvips"
 2017-09-13 18:24:32 +01:00
John Cupitt
48680dccc4 remove python test suite 
it's in pyvips now
 2017-09-13 17:45:29 +01:00
John Cupitt
60f212c371 credit! 2017-09-11 11:54:01 +01:00
John Cupitt
0f4feb1b73 note file create time change 2017-09-11 11:22:20 +01:00
John Cupitt
5a37d3e809 add an intent option to thumbnail 
"intent" lets you set the rendering intent for any ICC conversions --
the default is the (more correct) relative, but "perceptual" can look
better

see https://github.com/jcupitt/libvips/issues/714
 2017-08-30 16:34:46 +01:00
John Cupitt
820c279697 Merge branch '8.5' 2017-08-30 14:59:16 +01:00
John Cupitt
653e99ea82 don't build enumtypes so often 
we were only replacing enumtypes if it had changed, but this meant that
make usually thought it was out of date compared to the source files,
and rebuilt it, which needed perl

now we always replace it, so (hopefully) perl is no longer a
compile-time dependency
 2017-08-30 14:37:48 +01:00
John Cupitt
2b70348d23 Merge branch '8.5' 2017-08-29 10:33:45 +01:00
John Cupitt
e2c83fe4bd fix jpegload fail 
we were only failing on libjpeg errors, but libjpeg treats very serious
things thaht we want to be able to catch (like truncated files) as warnings
... we must therefore error out if fail is set and libjpeg issues a warning

see https://github.com/lovell/sharp/issues/793
 2017-08-29 09:49:38 +01:00
John Cupitt
d12f8e200a support tiffsave_buffer pyramids 
add support for tiff pyramid save to memory, thanks bubba

see https://github.com/jcupitt/libvips/issues/702
 2017-08-26 16:26:37 +01:00
John Cupitt
2e513eef82 enable seq mode for join 
much faster for large TIFFs

see https://github.com/jcupitt/libvips/issues/717
 2017-08-25 10:53:44 +01:00
John Cupitt
97997d1990 Merge branch '8.5' 2017-08-18 22:13:51 +01:00
John Cupitt
f2576003b7 fix webp upscale in thumbnail 
we could try to use webp shrink on load to upscale, oops

see https://github.com/jcupitt/libvips/issues/710
 2017-08-18 22:08:43 +01:00
John Cupitt
3cf33d7f32 Merge branch '8.5' 2017-08-18 12:32:12 +01:00
John Cupitt
f2c55e80fe better dzsave with zip output to a file 
close down output earlier to help mark-sweep bindings
 2017-08-18 12:31:24 +01:00
John Cupitt
63550280a4 Merge branch '8.5' 2017-08-04 18:31:25 +01:00
John Cupitt
47a763209a hide warnings if VIPS_WARNING is defined 
If VIPS_WARNING is defined, suppress all warning messages from vips by
installing a null log handler.

Libraries should not call g_log_set_handler(), it is supposed to be for
the application layer, but this can be awkward to set up if you are using
libvips from something like Ruby.

This env var hack is a workaround.

see https://github.com/jcupitt/ruby-vips/issues/119
see https://github.com/jcupitt/libvips/issues/544
 2017-08-04 18:01:19 +01:00
John Cupitt
e46a56e137 remove lcms1 support 
it had bitrotted and no longer worked properly
 2017-08-02 13:39:28 +01:00
John Cupitt
302f4f2517 Merge branch '8.5' 2017-08-02 11:05:39 +01:00
John Cupitt
58f9757467 fix transparency detection in merge 
a typo meant we were just testing the first band for zero, not all three

thanks Haida!
 2017-08-02 10:41:10 +01:00
John Cupitt
a3b226aa9b version bump 2017-08-02 10:40:17 +01:00
John Cupitt
639b0f5021 Merge branch '8.5' 2017-07-29 10:40:44 +01:00
John Cupitt
69f70a7e24 Merge branch '8.5' into tweak-smartcrop-8.5 2017-07-28 18:04:23 +01:00
John Cupitt
1e7541bfb8 add find_trim 
compiles, not yet working
 2017-07-25 14:52:45 +01:00
John Cupitt
a8fb38fb6a Merge branch '8.5' 2017-07-08 16:06:18 +01:00
John Cupitt
64fe910fc5 fix DPI mixup 
librsvg defaulted to 90 DPI, but libvips to 72 DPI -- add a correction
factor

thanks Fosk!

see https://github.com/jcupitt/libvips/issues/688
 2017-07-08 12:31:36 +01:00
John Cupitt
9a1c3f9405 rename 'disc' as 'memory' 
the old 'disc' flag to open defaulted TRUE and disabled read via disc if you
set it FALSE, which was very confusing

replace it with a flag called 'memory' which defaults FALSE and forces
read via memory if set TRUE

'disc' is still there and still works, it's just tagged as deprecated

see https://github.com/jcupitt/libvips/issues/677
 2017-07-07 09:45:49 +01:00
John Cupitt
91457e455a add "page-height" save property 2017-06-19 09:31:49 +01:00
John Cupitt
5383554724 Merge branch '8.5' 2017-06-12 18:23:07 +01:00
John Cupitt
4d846534b8 transform cmyk->rgb automatically 
if:

- we are writing a cmyk image
- there is an embedded profile
- the saver does not support cmyk

see https://github.com/jcupitt/libvips/issues/676
 2017-06-12 18:19:20 +01:00
John Cupitt
869f3dae04 revise again 
seems to work on all test images now
 2017-06-09 11:50:27 +01:00
John Cupitt
aeff03b951 Merge branch '8.5' 2017-05-29 10:21:02 +01:00
John Cupitt
7bcf0bb93f don't cache thumbnail 
thanks tomasc! see

jcupitt/ruby-vips#109
 2017-05-29 10:19:21 +01:00
John Cupitt
354921df83 Merge branch '8.5' 2017-05-28 06:34:11 +01:00
John Cupitt
6a189d068b mark vipsprofile as python2 
Some distros have python3 as the default, so make vipsprofile explicitly
python2, thanks ioquatix.

See https://github.com/jcupitt/libvips/issues/667
 2017-05-28 06:33:58 +01:00
John Cupitt
027b9ccc9c Merge branch '8.5' 2017-05-26 09:09:33 +01:00
John Cupitt
7b64246af2 fix a couple of issues with huge profiles 
The base64 encode limit was 1MB, but some huge profiles can get over
that, so it's now 10MB.

transform_save_string_blob() was incorrectly setting a refstring not a
blob as an error fallback, potentially leaving a dangling pointer.

Thanks Jaume!

See https://github.com/jcupitt/libvips/issues/666
 2017-05-26 09:04:15 +01:00
John Cupitt
5216d75b83 Merge branch '8.5' 2017-05-19 16:16:16 +01:00
John Cupitt
5df65ec6fd fix tiff read with page > 0 
could break edge tiles under some circumstances
 2017-05-19 16:07:36 +01:00
John Cupitt
8c8b71d935 Merge branch '8.5' 2017-05-15 11:35:47 +01:00
John Cupitt
2b0ebb0de2 fix test suite thresholds 
changes in jpg encode/decode mean we must adjust test suite thresholds
 2017-05-15 11:21:13 +01:00
John Cupitt
6dbdc173a2 better prefix guessing on Windows 
see https://github.com/tumagonx/pygi-mingw-patches/issues/5
 2017-05-13 11:11:32 +01:00
John Cupitt
82994e4c33 add vips_thumbnail_image() 
thumbnail with an image source, see

https://github.com/jcupitt/libvips/issues/656
 2017-05-12 18:20:37 +01:00
John Cupitt
5c6979cdcb Merge branch '8.5' 2017-05-12 17:25:01 +01:00
John Cupitt
942b0446a3 revise fail handling, again 
clarify policy on file read errors and warnings:

* if the file format library reports a warning, we log it in vips, but
that's all
* if the file format library reports an error, we log it, but try to
continue
* if the file format library reports an error and fail is set, we log it
and fail

all loaders now implement this
 2017-05-12 17:22:49 +01:00
John Cupitt
a10787baa3 Merge branch 'add-force-size' 2017-05-10 17:08:32 +01:00
John Cupitt
3019e5966b vips_conv*() default to float 
we had INT as the default, but this will cause serious precision loss
with many masks ... instead, have float (always correct) as the default
and let people turn on int if they cn
 2017-05-08 13:28:23 +01:00
John Cupitt
260180197d done! but needs some tests 2017-05-04 14:54:49 +01:00
John Cupitt
2b75a372d1 more truncated png improvements 2017-05-03 10:32:24 +01:00
John Cupitt
39ea6ce492 all done 2017-04-29 10:07:41 +01:00
John Cupitt
04353f8915 added new_from_image() to python 
and tests
 2017-04-28 18:27:15 +01:00
John Cupitt
7882602dfe C/C++ done 
python next
 2017-04-26 14:52:28 +01:00
John Cupitt
b0f8246c90 Merge branch '8.5' 2017-04-26 10:31:33 +01:00
John Cupitt
cc38097560 better handling of truncated PNG files 
improve fail support, and bail out sooner

see https://github.com/jcupitt/libvips/issues/646
 2017-04-26 10:25:52 +01:00
John Cupitt
4c8d83ce85 Merge branch '8.5' 2017-04-23 18:54:40 +01:00
John Cupitt
8bf0a05948 doc polishing 2017-04-23 18:52:05 +01:00
John Cupitt
757065baab Merge branch '8.5' 2017-04-23 09:58:11 +01:00
John Cupitt
a067dc4140 oop credit fix 2017-04-23 09:57:55 +01:00
John Cupitt
d8fce50284 Merge branch '8.5' 2017-04-23 09:57:02 +01:00
John Cupitt
7938903d22 don't size caches by image width 
we were sizing buffers partly by image width, which could cause caches
to be too small if width changed down a pipeline

see https://github.com/jcupitt/libvips/issues/639
 2017-04-23 08:31:16 +01:00
John Cupitt
4f3364a2b0 skip non-image HDUs at start of fits 
some fits images have header units (HDUs) at the start with extra
metadata in ... skip over these

see https://github.com/jcupitt/libvips/issues/640
 2017-04-15 13:27:45 +01:00
John Cupitt
4094070ecb version bumo for new cycle 2017-04-15 13:26:29 +01:00
John Cupitt
e01a90f7cf revise cache sizing 
we had output buffers too large, input caches too small

see https://github.com/jcupitt/libvips/issues/639
 2017-04-13 16:24:51 +01:00
John Cupitt
38b65478e5 bump version, doc tweaks 
more sotons removed
 2017-04-07 15:59:37 +01:00
John Cupitt
a5b04091ee Merge branch 'add-markdown-docs' into 8.5 2017-04-06 11:51:36 +01:00
John Cupitt
c2cb4c38fe missing ptoto for vips_tiffsave_buffer() 
oop, thanks greut

see https://github.com/jcupitt/libvips/issues/632
 2017-04-04 10:17:05 +01:00
John Cupitt
30829ef003 add howitworks.md 2017-03-31 10:57:04 +01:00
John Cupitt
d5a706e47e better behaviour for truncated PNG files 
truncated PNG files failed with an error, even if --fail was not set ...
instead, just warn, and only error out if fail is on

see https://github.com/jcupitt/libvips/issues/629
 2017-03-30 17:13:25 +01:00
John Cupitt
cd2c1324c5 version bump for release 
and for the one tiny change
 2017-03-25 13:57:33 +00:00
John Cupitt
0a5375b6cd Merge branch 'master' into remove-seq-stalling 2017-03-15 12:26:44 +00:00
John Cupitt
fd6006bacb Merge branch 'master' into add-smartcrop 2017-03-13 20:41:22 +00:00
John Cupitt
51f96ce9af argh revert the arg order change 
we need to patch bindings instead
 2017-03-13 08:24:06 +00:00
John Cupitt
d7da3c7de7 fix vips_resize() bug 
if hscale and vscale were very different, resize could fail with "reduce
factor too large" ... just a silly typo
 2017-03-10 10:22:40 +00:00
John Cupitt
9eab57c31d Merge branch 'master' into add-smartcrop 2017-03-08 17:17:16 +00:00
John Cupitt
9e6832b34d add --smartcrop to vipsthumbnail 
does the obvious thing
 2017-03-08 14:31:00 +00:00
John Cupitt
507212e3d8 Merge branch 'master' into remove-seq-stalling 2017-03-08 09:30:48 +00:00
John Cupitt
55dcaa4ae4 add vips_rot90() etc. convenience funcs 
90/180/270 rotate as convenience functions
 2017-03-07 17:36:49 +00:00
John Cupitt
205fb817e8 change three C API funcs to match Python/C++/CLI 
vips_math2_const(), vips_boolean_const() and vips_relational_const() had
the const and oper args reversed from the Python/CLI/C++ API

add something to check for arg priority conflicts and resolve the
conflicts it found
 2017-03-07 14:28:31 +00:00
John Cupitt
162e224186 notes 2017-03-05 22:24:52 +00:00
John Cupitt
d40773515c add smartcrop 2017-03-01 15:41:26 +00:00
John Cupitt
47a4a78a33 Merge branch 'try-expat' 2017-02-28 17:19:21 +00:00
John Cupitt
1912a30bec Revert "note new seq thing" 
This reverts commit 156f729d75.
 2017-02-27 10:23:19 +00:00
John Cupitt
e1b9c789cb add dbuf object 
dynamically expanding buffer

also, escape "<>& appropriately when we write xml
 2017-02-26 17:37:46 +00:00
John Cupitt
e87654fcd9 use printf for xml write 2017-02-25 17:28:48 +00:00
John Cupitt
134ce0560c use expat for xml read 
we were using libxml for xml load, use expat instead, we get it for free
with glib
 2017-02-25 13:07:43 +00:00
John Cupitt
156f729d75 note new seq thing 2017-02-23 20:05:11 +00:00
John Cupitt
4bbd56fb0a handle transparency in vips_region_shrink() 
we weren't multiplying through alpha in vips_region_shrink(), causing
fringing on pyramids with transparent elements

thanks sickrandir!

see https://github.com/jcupitt/libvips/issues/599
 2017-02-23 17:04:25 +00:00
John Cupitt
21a5d0dfe4 speeling 2017-01-29 12:24:25 +00:00
John Cupitt
2b482fc2cf seems to work! 2017-01-27 16:43:37 +00:00
John Cupitt
7136053451 sort max/min results by y and x coordinate 
previously the list of maxima or minima found by max/min were in found
order, so essentially random

they now sort equal values by y then x coordinate, so the results are
consistent between runs, provided there are fewer maxima / minima than
are being tracked
 2017-01-24 14:25:15 +00:00
John Cupitt
c9ce8f70a1 fix an off-by-one error in hist_local 
an odd window width caused an off-by-one error in histogram construction
 2017-01-24 10:51:12 +00:00
John Cupitt
36761bcfd7 make vips_gaussnoise() pixels reproducible 
previously, pixel values were regenerated on every calculation, so they
changed on recomputation

pixel values are now generated from the pixel (x, y) coordinate plus a per-call
seed

thanks MvGulik, see

https://github.com/jcupitt/nip2/issues/60

https://github.com/jcupitt/libvips/issues/583
 2017-01-24 09:36:25 +00:00
John Cupitt
9660036216 credit hunter-87 
see https://github.com/jcupitt/libvips/issues/268
 2017-01-22 10:09:40 +00:00
John Cupitt
fa3c92c19b add CLAHE 
vips_hist_local() has a new param, max_slope, which sets the maximum
amount that the local contrast can be boosted by -- CLAHE

see https://github.com/jcupitt/libvips/issues/268

also fix a couple of small range problems

- scale by 255, not 256, to avoid an overflow
- cum hist includes the current value, so sum to <= target, not < target
 2017-01-22 10:05:58 +00:00
John Cupitt
d05018155d adjust notes for coverity changes 2017-01-20 09:16:46 +00:00
John Cupitt
79c21dfcf8 seems to be done! 2017-01-18 14:39:27 +00:00
John Cupitt
0231b512b4 fits isn't quite working still 2017-01-17 14:53:40 +00:00
John Cupitt
c464503510 Merge branch 'master' into invalidate-on-load-error 2017-01-17 13:47:14 +00:00
John Cupitt
fb88d037fc Merge branch 'master' into add-thumbnail-geometry 2017-01-17 11:51:10 +00:00
John Cupitt
6b325145e4 use new hints and prepare everywhere 2017-01-12 14:36:44 +00:00