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Author SHA1 Message Date
John Cupitt
f5d76b42fc fix centre sampling for non-int nearest upscale 
we were not disabling the input offset for NEAREST, whcih is always
centre

thanks edwjusti

see https://github.com/lovell/sharp/issues/1479
 2018-12-03 17:13:57 +00:00
John Cupitt
ee4d1d7c22 try to fix pdfium linking 
still not quite there
 2018-11-29 13:32:15 +00:00
John Cupitt
e7cf88cf99 note delay and loop in webpsave docs 2018-11-28 07:17:02 +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
e6f271df10 remove stop-at-solid feature 
We used to stop compositing when we reached the first solid image, but
that only works for modes like OVER.

Instead, composite all images, regardless of transparency.

See https://github.com/libvips/libvips/issues/928
 2018-11-27 14:51:56 +00:00
John Cupitt
24abbb83ab add animated webp tests 2018-11-27 13:36:28 +00:00
John Cupitt
4e182440ef fix non-animated webp read 2018-11-26 17:14:57 +00:00
John Cupitt
1d64321649 Merge branch 'master' into add-webp-animated 2018-11-26 13:20:34 +00:00
John Cupitt
3887d8a6e5 fix out of order read for some tiff 
Make sure we always have min of two strips in a linecache. Plane
separate tiffs with large rows-per-strip could shrink the cache to a
single block of pixels, which would then fail if the output straddled a
tile boundary.

See https://github.com/libvips/libvips/issues/1158

Thanks @chregu for the report.
 2018-11-25 19:03:35 +00:00
John Cupitt
2b70333d7e fix string truncation regression 
buf_append was dropping the final byte
 2018-11-25 11:19:36 +00:00
John Cupitt
0669cf2a23 Merge branch 'master' into add-webp-animated 2018-11-23 17:41:09 +00:00
John Cupitt
01a5bfa27e notes 2018-11-23 17:22:06 +00:00
John Cupitt
b2325697c3 revise xmp in png 
back to blob again
 2018-11-23 17:20:05 +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
8fa3b0aa1c start trying to fix up blob/string mixups 
we often set strings as blobs (eg. libtiff uses pointer/length for
XML and does not null-terminate) ... when do we validate stringiness,
and add the missing null?
 2018-11-22 09:15:57 +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
572e37a314
Merge pull request #1159 from lovell/tiffread-premultiplied-alpha 
Unpremultiply TIFF with associated alpha channel
 2018-11-17 10:59:39 +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
Lovell Fuller
0d6c29f772 Unpremultiply TIFF with associated alpha channel 2018-11-13 19:47:36 +00:00
John Cupitt
b84bf6d4f4 check read order for strip tiffs 
double-check seq is working, related to https://github.com/libvips/libvips/issues/1158
 2018-11-13 17:29:36 +00:00
John Cupitt
8edc2c3f22 add webp anim write options 2018-11-06 17:20:35 +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
89c6d29079 add comments re. temp file open bug 2018-11-05 10:38:15 +00:00
John Cupitt
e5234287da
Merge pull request #1155 from lovell/open-tmpfile-fallback 
Fallback to standard temp file if O_TMPFILE fails
 2018-11-05 10:17:00 +00:00
John Cupitt
b161f4b982 clear to background on init 2018-11-04 19:58:06 +00:00
Lovell Fuller
90ca64668d Fallback to standard temp file if O_TMPFILE fails #1151 2018-11-04 19:51:36 +00:00
John Cupitt
e81e7f96eb add blending to webp load 2018-11-04 18:28:36 +00:00
John Cupitt
5e071a783f rework webp for progressive read 
should be faster and need a lot less memory for long animations
 2018-11-04 12:04:21 +00:00
John Cupitt
d317961378 check frame durations 2018-11-03 14:03:16 +00:00
John Cupitt
7071ad79a8 fix non-animated read 2018-11-03 12:39:08 +00:00
John Cupitt
d7e8688c35 loads an animation as a set of frames 
still need to add dispose and blend, plus page/n
 2018-11-02 16:47:34 +00:00
John Cupitt
3194083af2 reads animation headers 
decode animation frames next
 2018-11-02 10:22:03 +00:00
John Cupitt
5dadc03ce0 start animation decode for webp 
switch to demux API, start extended header read
 2018-11-02 09:06:05 +00:00
John Cupitt
556a165e53 tiny polish 2018-11-02 07:38:06 +00:00
John Cupitt
226f6e4f09 read the loop count 2018-11-01 22:17:54 +00:00
John Cupitt
e106e1d100 add n/page params to webpload 
and renumber all optional load args
 2018-11-01 20:43:07 +00:00
John Cupitt
23e13ea6ed remove libwebpdemux ifdefs 
since it's now required
 2018-11-01 20:15:36 +00:00
John Cupitt
d4823489dc switch to libwebpmux for webp write 
we had our own horrible thing before
 2018-11-01 18:50:10 +00:00
John Cupitt
12f81a1477 Merge branch 'add-webp-animated' of github.com:libvips/libvips into add-webp-animated 2018-10-31 16:52:51 +00:00
John Cupitt
d671d5c7bd add delay support 2018-10-31 16:52:09 +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
801a2a7144 added anim write 
compiles, but untested
 2018-10-31 16:49:41 +00:00
John Cupitt
7303ecbebb typo 
thanks @becoded
 2018-10-31 14:09:57 +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
aaf26765f2 warn about default TRUE bool args 
to stop anyone making one again, hopefully
 2018-10-31 12:45:17 +00:00