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Author SHA1 Message Date
John Cupitt
3996f3279b fix range clips for casts to and from int 
Fix two bugs:

- clip in casts from int32 and uint32 could overflow -- do these as gint64 now

- clip in casts from float to int could overflow since float32 can't
  represent the full range of int32 without losing precision -- do these
  as double

And add some more tests.

Thanks ewelot.

see https://github.com/libvips/libvips/issues/1922
 2020-12-09 15:14:59 +00:00
John Cupitt
6eaf1eda30 make webp frame blend do doround to nearest 
see https://github.com/libvips/libvips/pull/1918
 2020-12-04 13:53:24 +00:00
John Cupitt
aa9906184a
Merge pull request #1918 from lovell/webpload-single-frame-noblend 
webpload: ensure first frame is not blended
 2020-12-04 13:14:29 +00:00
Lovell Fuller
f9dc3177c7 webpload: ensure first frame is not blended 2020-12-04 11:50:58 +00:00
John Cupitt
1f71c7ae07 n comment 2020-12-03 13:34:21 +00:00
John Cupitt
587a7c2d63 note ppmload fix 2020-12-02 21:03:44 +00:00
John Cupitt
4c1aeaacd9 add is_a_source to ppmload 
ppmload_source was missing an ia_a test

see https://github.com/libvips/libvips/issues/1915
 2020-12-02 21:02:05 +00:00
John Cupitt
f99da5f3e1 docs clarification 
https://github.com/libvips/libvips/issues/1912
 2020-12-01 18:33:40 +00:00
John Cupitt
2585565b3e better test for output to target 
We used to enable write to stdout if the first character of an output filename
was ".", eg.:

	vips copy x.jpg .png

But this will also enable write to stdout for things like:

	vips copy x.jpg ./y.png

This patch also tests that the rightmost "." in a filename is also the
first character.

Thanks barryspearce

See https://github.com/libvips/libvips/issues/1906
 2020-11-29 13:59:30 +00:00
John Cupitt
acc579cc9d force binary mode for connections on win 
stdin / stdout (for example) are created in text mode by default on
win. We need to flip them to binary mode for connection read and write.

See https://stackoverflow.com/questions/65014352/pipe-libvips-cli-output-to-stdout-in-windows
 2020-11-26 10:15:48 +00:00
John Cupitt
eddc99e6d8
Merge pull request #1899 from kleisauke/byteswap-vipsload 
Ensure vipsload only byte swaps if necessary
 2020-11-23 14:07:23 +00:00
Kleis Auke Wolthuizen
ea53660a6b Port Ruby test case to Python 2020-11-23 14:40:59 +01:00
Kleis Auke Wolthuizen
77de1c473a Determine endianness at compile time 2020-11-23 14:39:06 +01:00
Kleis Auke Wolthuizen
d9dec2c027 Simplify MSB-ordered image check 2020-11-23 14:35:03 +01:00
Kleis Auke Wolthuizen
9bb86119e3 Ensure vipsload only byte swaps if necessary 
Prior to this commit, MSB-ordered vips images were always byte swapped
on both little- and big endian systems. And LSB-ordered vips images
were loaded without a byte swap. This works correctly on little endian
systems, but will not work on big endian systems where the byte swap
must be done vice versa.

This commit ensures that the byte swap only takes place when needed.

See https://github.com/libvips/libvips/issues/1847.
 2020-11-23 14:32:36 +01:00
John Cupitt
6340e14303 byteswap on ppm save, if necessary 
this was missing, thanks ewelot

see https://github.com/libvips/libvips/issues/1894
 2020-11-22 16:37:24 +00:00
John Cupitt
c0bace8f91 Merge branch '8.10' of github.com:libvips/libvips into 8.10 2020-11-22 16:05:57 +00:00
John Cupitt
8e25eef3d0 make ppm load default to msb first 
We has lsb first as the default, breaking 16-bit PPM load. Thanks ewelot.

see https://github.com/libvips/libvips/issues/1894
 2020-11-22 16:00:34 +00:00
John Cupitt
a446f2d6d9 oops typo in magick7 load 2020-11-22 06:33:11 +00:00
John Cupitt
c17e696243 backport gifheight check 
ensure gifheight can't oevrflow

see https://github.com/libvips/libvips/pull/1892
 2020-11-21 14:25:09 +00:00
John Cupitt
1e5ac06f84 fix a possible read loop for truncated gifs 2020-11-20 13:46:24 +00:00
John Cupitt
d971c75d6f block 0 width or height images from imagemagick 
IM could return 0 width and/or height for some crafted images. Block
these.

Thanks @Koen1999.

See https://github.com/libvips/libvips/issues/1890
 2020-11-20 12:17:42 +00:00
John Cupitt
98641ba153 add read loops to gifload 
and check for error in ppnmload.
 2020-11-12 13:21:33 +00:00
John Cupitt
a09027b2a5 forgot to advance the buffer pointers 
thanks kleis

see https://github.com/kleisauke/net-vips/issues/101#issuecomment-726046152
 2020-11-12 12:32:51 +00:00
John Cupitt
2dd6fc1f36 note read fixes in changelog 2020-11-12 12:18:22 +00:00
John Cupitt
ff450497ff add read loops to heif and ppm as well 
We were not looping on vips_source_read() in these loaders, so they
could fail when reading from very slow pipes.

See https://github.com/kleisauke/net-vips/issues/101
 2020-11-12 12:11:35 +00:00
John Cupitt
c0102c5814 better GraphicsMagick image write 
We were not setting matte or depth correctly, thanks bfriesen.
 2020-11-12 12:00:11 +00:00
Kleis Auke Wolthuizen
0a91e2d8c7 Ensure that streams are properly read in spngload 2020-11-11 21:17:07 +00:00
John Cupitt
6894159ad5 fix icc-profiles and dzsave --no-strip 
We were not copying metadata down pyramid layers in dzsave, so
--no-strip didn't allow icc profiles on tiles.

Thanks altert

See https://github.com/libvips/libvips/issues/1879
 2020-11-11 10:02:46 +00:00
John Cupitt
1686725117 block annoying INFO messages on some older glibs 
Some old glibs can display INFO messages by default. Block these
ourselves.

See https://github.com/libvips/libvips/issues/1876
 2020-11-10 11:03:18 +00:00
John Cupitt
4de9b56725 flush target at end of write 
we were missing end-of-write flushes on four save operations

thanks harukizaemon

see https://github.com/libvips/ruby-vips/issues/256
 2020-11-04 09:28:25 +00:00
John Cupitt
39899582d4 add tests for tiff pyr save region-shrink flag 
we were testing the flag before, but not that the result was correct

see https://github.com/libvips/libvips/issues/1875
 2020-11-03 23:44:11 +00:00
John Cupitt
85f3ac6d8f fix tiff pyramid save region-shrink 
we'd forgotton to connect it up

thanks imgifty

see https://github.com/libvips/libvips/issues/1875
 2020-11-03 23:14:44 +00:00
John Cupitt
91d9610a55 fix out of bounds read in tiffload 
libtiff can change the value of some fields while scanning a corrupt
TIFF file and this could trigger an out of bounds read.

This patch makes tiffload more cautious about rescanning a TIFF
directory before reading out header fields.
 2020-11-03 11:48:21 +00:00
Kleis Auke Wolthuizen
4533375f63 Fix centre convention 2020-11-02 13:51:27 +01:00
Kleis Auke Wolthuizen
fdc140e8e9 Round sum values to the nearest integer in *_notab 2020-11-02 13:51:27 +01:00
Kleis Auke Wolthuizen
49d8051e22 Revert "Remove round-to-nearest behaviour" 
This reverts commit ac30bad6
 2020-11-02 13:51:27 +01:00
John Cupitt
ae82bcc3e8 fix out of bounds exif read in heifload 
We were subtracting 4 from the length of the exif data block without
checking that there were 4 or more bytes there.
 2020-10-20 08:54:54 +01:00
John Cupitt
0131d4d3eb fix vips7 webp load 
webp load using the vips7 interface was crashing, thanks barryspearce

see https://github.com/libvips/libvips/issues/1860
 2020-10-19 14:34:02 +01:00
John Cupitt
b1e636346a relax is_a heic test rules 
32 was a little too small, see https://github.com/libvips/libvips/issues/1861
 2020-10-18 22:36:15 +01:00
John Cupitt
f1d2d4030e fix build with libheif save buit not load 
We had some definitions inside the #ifdef HEIFLOAD.

Thanks estepnv

https://github.com/libvips/libvips/issues/1844
 2020-10-09 14:02:53 +01:00
John Cupitt
678b6d5c95 fix a regression in the C path for dilate/erode 
A ++ had been dropped in the recent refactoring. Credit to kleisauke.

See https://github.com/libvips/libvips/issues/1846
 2020-10-07 15:23:40 +01:00
John Cupitt
80b73af225 note new "speed" param in heifsave 
To help support the rapid move to AVIF.

see https://github.com/libvips/libvips/pull/1819#issuecomment-704145244
 2020-10-06 10:50:06 +01:00
Lovell Fuller
fc1e609f44 libheif: expose speed parameter (currently AV1 compression only) 
Supports both aom and rav1e encoders by limiting to a 0-8 range.

(The rav1e encoder accepts speed values of 9 and 10 but these
use 64x64 blocks more suited to video than images.)
 2020-10-06 10:48:54 +01:00
John Cupitt
5b119e183f pdfload was missing a rewind on source 2020-10-04 14:26:13 +01:00
John Cupitt
edbe9bf8ef revise pipe sources (again) 
Simplify and cleanup.
 2020-10-04 14:05:53 +01:00
John Cupitt
0ee8b1e844 improve seek on pipes 
There were a few issues in VipsSource around seeking on pipes. With this
patch, EOF detection is better, and pipe sources automatically turn into memory
sources when EOF is hit.

see https://github.com/libvips/libvips/issues/1829
 2020-10-03 18:25:24 +01:00
John Cupitt
e3181e0579 get docs building with goi 1.66+ 
It builds now, but some doc sections are missing. Fix this properly in
8.11.

See https://github.com/libvips/libvips/issues/1836
 2020-09-28 12:32:06 +01:00
John Cupitt
b3f77634df Merge branch '8.10' of github.com:libvips/libvips into 8.10 2020-09-27 10:03:29 +01:00
John Cupitt
237604bb07 revise heifload EOF detection 
VipsSource used a unix-style model where read() returns 0 to mean EOF.
libheif uses a model where a separate call to wait_for_file_size()
beforehand is used to check thaht the read will be OK, and then the
read() is expected to never fail.

We were trying to put EOF detection into libheif read(), but that's not
the right way to do it. Instead, test for EOF in wait_for_file_size().

see https://github.com/libvips/libvips/pull/1833
 2020-09-26 13:00:52 +01:00