* Avoid writing the full path in enumtypes.h
Helps reproducible builds, as build paths can vary between builds.
* Use g_intern_static_string() for enum/flags type names
We are emitting a static string, so use that shortcut function to
intern it, which will save one allocation.
* Use g_once_init_enter/leave to register enum/flags type names
This is the more modern way, and ensures thread-safety.
Instead of a simple fail/don't-fail boolean switch, add fail-on, an enum which sets the sensitivity of loaders to errors.
There's a new sensitivity level which tries to detect truncated images, but ignores other types of error.
tell buffer and target savers the file format
Currently, buffer and target savers are not told the format they should
write.
This is usually OK (the JPEG saver already knows it should write JPEG),
but some savers can write several formats, and these currently need an
extra parameter.
For example:
```ruby
buf = x.write_to_buffer ".bmp", format: "bmp"
```
The first ".bmp" gets libvips to pick magicksave, the second
`format:` param is necessary to tell magicksave to write BMP.
This patch adds stub subclasses so that the savers know the exact format. It also improves PPM save.
Defaults to no subsampling when Q>90 for consistency with jpegsave.
Deprecate VipsForeignJpegSubsample enum, replace with more generic
VipsForeignSubsample.
vips_gaussmat() and vips_logmat() used to default to float, but
vips_conv() defaulted to int ... so this failed:
vips gaussmat m.v 2 0.1 --separable
vips convsep k2.jpg x.jpg m.v
since we were using a small float mask with an integer convolution
This change makes everything int by default, with gaussmat having a new
param called --precision whose arg can be int or float.
The old @integer param is deprecated.
cli operations turn on seq mode automatically when they can
vips_operation_get_flags() added: lets you attach a set of flags to an
operation
flags for now are "nocache" (replacing the old nocache system) and "seqential"
if vips_object_set_argument_from_string() from string sees "seq" flag on the
object for which it is setting the arg, it enables sequential mode
all operations which can run sequentially have been tagged
the operation printer knows about flags and can display them
Kleis Auke Wolthuizen
John Cupitt
Lovell Fuller
elad laufer
gargsms
Felix Bünemann
John Cupitt