sergiotarxz
/
libvips
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
libvips/TODO

429 lines
13 KiB
Plaintext
Raw Blame History

- revisit orc conv
use an 8.8 accumulator ... build the scale into the 8.8 coeffs ... no div at
the end, just a shift
need 8 x 8.8 -> 8.8 for each coeff though
- also VipsFormat ... could this replace vips_image_new_from_string()? or
could we call this from vips_image_new_from_string()?
at the moment, VipsFormat subclasses never get made, we just use the classes
... we'd need to start making real vipsformat objects for this to work
how would this work?
at the moment we have
image = vips_image_new_from_file( filename );
build a VipsImage with filename "r"
we also have the new CLI thing
obj = vips_object_new_from_string( class, str );
calls class->new_from_string( first-component(str) ), then sets
optional args from rest-of-str(str), then does _build()
image-class->new_from_string() just make a vipsimage "r" str
the _build() uses VipsFormat() to load via im_tiff2vips() or whatever
so ... we could change vips_image_new_from_file() to be
VIPS_IMAGE( vips_object_new_from_string( VipsImageClass, str ) )
we could also make VipsImage::new_from_string() make a real VipsFormat
object, then load options could be set from the str
how does save work? we call image-class->output_to_arg(obj, str), which in
turn calls vips_image_write(), which in turn uses VipsFormat
- make a vips8 binding for Python as well
use ctypes and not swig so we get an easy Win version
wrap new API for C++
- Magick:
- do we bundle "convert" in the OS X / win32 builds? if we don't we
should
- some way for nip2 to get the vips bin area
- some way for nip2 to get EXEEXT
- wrap a basic set of Magick filters
- need vips_image_invalidate_area()
- leak check, again
- add matlab write
- need a way to make the vips.1 etc. man pages
gtk has things like docs/reference/gtk/gtk-update-icon-cache.xml and man
pages are made from that with xslt
- get rid of a lot of the command-line programs, who wants to write a man page
for batch_image_convert etc yuk
- can we make man pages for the API as well? probably not from googling a bit
- use g_mmap() or whatever it's called ... or perhaps they don't have all
these options
- use |_O_TEMPORARY to open()'s mode on Windows for tmpfiles to increase the
chances we actually delete
see http://www.mail-archive.com/bug-gnulib@gnu.org/msg05730.html
- lab [100,0,0] -> srgb [255, 255, 254]? how odd
- im_conv()/im_morph() could have more than 10 programs? try 20 and see if we
still have a speedup
make a base class for vector area operations with a matrix with three vfuncs
for init / generate code for one element / end and a gslist of programs, use
that as the base for morph and conv
wait for vipsobject for this
- perspective transform with a matrix ... base it on the Lenz transformer, but
partial
- maybe im_draw_smudge() is too slow :-( also, we had a sanity failure with
it, argh
make a region, prepare to that, copy back over the image?
- use D65 in cmsCreateLab4Profile() ? not sure
- im_divide() can /0 for complex
- unlink temps earlier on *nix systems
the file is created by setupout, which is called just before generate or
writeline, so perhaps unlink on evalstart?
no, on a rewind we need to be able to close and reopen, argh
- test
python setup.py build_ext
python setup.py build
python setup.py install
>>> from vipsCC import *
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/local/lib/python2.6/dist-packages/vipsCC/VImage.py", line 25, in
<module>
vimagemodule = swig_import_helper()
File "/usr/local/lib/python2.6/dist-packages/vipsCC/VImage.py", line 21, in
swig_import_helper
_mod = imp.load_module('vimagemodule', fp, pathname, description)
ImportError: /usr/local/lib/python2.6/dist-packages/vipsCC/vimagemodule.so:
swig_import_helper
_mod = imp.load_module('vimagemodule', fp, pathname, description)
ImportError: /usr/local/lib/python2.6/dist-packages/vipsCC/vimagemodule.so:
undefined symbol: _ZTIN4vips5VMaskE
ie. vimagemodule.so can't find libvipsCC.so I guess? or perhaps the compiler
is being given a differnt mangling flag
we're building with:
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall
-Wstrict-prototypes -fPIC -DDEBUG_FATAL=1 -DDEBUG_LEAK=1
-I/usr/lib/glib-2.0/include -I/usr/include/pango-1.0 -I/usr/include/libxml2
-I/usr/include/libpng12 -I/usr/include/libexif -I/usr/include/glib-2.0
-I/usr/include/freetype2 -I/usr/include/OpenEXR -I/usr/include/ImageMagick
-I../../libvips/include -I../../libvipsCC/include -I/usr/include/python2.6 -c
vimagemodule.cpp -o build/temp.linux-x86_64-2.6/vimagemodule.o -pthread
-fopenmp -pthread -Wl,--export-dynamic -pthread -pthread -pthread
g++ -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions
build/temp.linux-x86_64-2.6/vimagemodule.o -Wl,-R/home/john/vips/lib
-lMagickWand -lMagickCore -lpng12 -ltiff -lz -ljpeg -lgthread-2.0 -lrt
-lglib-2.0 -lgmodule-2.0 -lxml2 -lgobject-2.0 -lgthread-2.0 -lrt -lglib-2.0
-lpangoft2-1.0 -lpango-1.0 -lfreetype -lfontconfig -lgobject-2.0 -lgmodule-2.0
-lgthread-2.0 -lrt -lglib-2.0 -lfftw3 -lm -llcms -lIlmImf -lz -lImath -lHalf
-lIex -lIlmThread -lmatio -lz -lexif -lm -lstdc++ -lm -o
build/lib.linux-x86_64-2.6/vipsCC/vimagemodule.so -pthread -fopenmp -pthread
-Wl,--export-dynamic -pthread -pthread -pthread
how does this compare to the working build? swig/vipsCC does
g++ -DHAVE_CONFIG_H -I. -I../.. -I../../libvips/include -I../../libvipsCC/include -DDEBUG_FATAL -DDEBUG_LEAK -pthread -fopenmp -I/usr/lib/glib-2.0/include -I/usr/include/pango-1.0 -I/usr/include/libxml2 -I/usr/include/libpng12 -I/usr/include/libexif -I/usr/include/glib-2.0 -I/usr/include/freetype2 -I/usr/include/OpenEXR -I/usr/include/ImageMagick -I/usr/include/python2.6 -g -Wall -MT vimagemodule.lo -MD -MP -MF .deps/vimagemodule.Tpo -c vimagemodule.cxx -o vimagemodule.o >/dev/null 2>&1
g++ -shared -nostdlib /usr/lib/gcc/x86_64-linux-gnu/4.4.3/../../../../lib/crti.o /usr/lib/gcc/x86_64-linux-gnu/4.4.3/crtbeginS.o .libs/vimagemodule.o -Wl,-rpath -Wl,/home/john/SVN/vips/vips7/trunk/libvipsCC/.libs -Wl,-rpath -Wl,/home/john/SVN/vips/vips7/trunk/libvips/.libs -Wl,-rpath -Wl,/home/john/vips/lib ../../libvipsCC/.libs/libvipsCC.so ../../libvips/.libs/libvips.so /usr/lib/libMagickWand.so /usr/lib/libMagickCore.so -lpng12 /usr/lib/libtiff.so /usr/lib/libjpeg.so /usr/lib/libxml2.so /usr/lib/libpangoft2-1.0.so /usr/lib/libpango-1.0.so /usr/lib/libfreetype.so -lfontconfig /usr/lib/libgobject-2.0.so /usr/lib/libgmodule-2.0.so /usr/lib/libgthread-2.0.so -lrt /usr/lib/libglib-2.0.so /usr/lib/libfftw3.so /usr/lib/liblcms.so /usr/lib/libIlmImf.so -lImath -lHalf -lIex -lIlmThread /usr/lib/libmatio.so -lz /usr/lib/libexif.so -L/usr/lib/gcc/x86_64-linux-gnu/4.4.3 -L/usr/lib/gcc/x86_64-linux-gnu/4.4.3/../../../../lib -L/lib/../lib -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/4.4.3/../../.. -L/usr/lib/x86_64-linux-gnu -lstdc++ -lm -lc -lgcc_s /usr/lib/gcc/x86_64-linux-gnu/4.4.3/crtendS.o /usr/lib/gcc/x86_64-linux-gnu/4.4.3/../../../../lib/crtn.o -pthread -Wl,--export-dynamic -pthread -pthread -pthread -pthread -Wl,-soname -Wl,vimagemodule.so -o .libs/vimagemodule.so
- convert_saveable for other writers: tiff, ppm, csv, rad etc.
- expose more of the tone funcs in nip2
- quite a few hist operations have no GUI ... lhisteq, for example? or
histspec?
- rename header, edvips as vipsheader, vipsedit
maybe have back compat links?
- should im_rwcheck() copy to disc?
maybe im_rwcheck_disc() copies to im->filename and maps that
rather awkward to do atm with the way check.c is structured
- what does G_UNLIKELY() do? can we use it?
- rename vipsCC in SWIG as pyvips?
- look into G_GNUC_DEPRECATED for back compat in vips8
- use
http://library.gnome.org/devel/glib/stable/glib-Byte-Order-Macros.html
for swapping ... they are asm macros so we should see a speedup
- can we use conv_sep to speed up the memuse benchmarks?
- check mosaic1, global_balance, similarity etc. use of im__affine
how can we move them to im_affinei ?
- doc strings would be nice, read the SWIG notes on this
- bilateral filtering, see:
http://en.wikipedia.org/wiki/Bilateral_filter
http://www.shellandslate.com/fastmedian.html
http://people.csail.mit.edu/sparis/bf_course/
also a mail from Martin Breidt has links to several fast free C
implementations
- try making vips_add(), an operator as a class
- need a section for vipsobject in the tutorial
also a manpage?
not really stable yet :( don't document
- how to expose things like snohalo1's "blur" parameter to
C++/Python?
can we write a find-by-nickname function? eg.
GType vips_get_type (const char *base, const char *nickname)
then
vips_get_type ("VipsInterpolator", "bicubic")
would get us the GType for VipsInterpolatorBicubic
- we shouldn't need to call im_invalidate() in gtkdisp4 :( how can we fix
this?
- we should wrap the format API, also im_render*(), see gtkdisp.cc for sample
code
- have a base VObject class and put the ref stuff in there ... share between
VMask, VDisplay, VImage
- need an im_init_world() for C++ which does cmd-line args too, so C++ progs
can get --vips-progress and stuff automatically
- more cleanups to the handling of vips format images, esp. we have vips write
spread across many files atm
- could remove a lot of crappy old API
- try
libsrc/convolution$ grep -l offsets *.c
could we do the don't calc offsets thing unless bpl; changes thing in more
places?
- unsharp should work on GREY16? should be easy to add GREY16->LABS
no, labs is signed short, ranges are all differrent, and the scaling will be
wrong anyway
correct: import with ICC to labs, then process, then export to RGB, take
green?
yuk, can we add a 16bit path to vips's lab <--> rgb converter?
use TIFF RGB16 as the 16bit RGB target
im_XYZ2disp() would be easy to 16bit ... just need the 1,500 element table
table->t_Yr2r[i] expanded
im_disp2XYZ() uses im_col_rgb2XYZ() in a loop ... again, need
the 1,500 element table table->t_r2Yr[i] expanded
usually these three tables (t_r2Yr, t_g2Yg, t_b2Yb) will be identical, can
we common them up? same for t_Yr2r etc.
how big should the table be for 16 bits? 256 times larger? too big!
we really just need a LUT for pow() with the right exponent, eg. 2.4 for
sRGBs, and one for 1/2.4 ... see what calcul_tables does:
table->t_r2Yr[i] = yo + a * pow( i * table->ristep / f + c, ga );
see
- test maxpos_avg, quite a few changes
- HAVE_HYPOT could define a hypot() macro?
- im_exr2vips can now use c++ api
see TODO notes in openexr read (though they all need more openexr C API)
consider openexr write
- python startup fails with plugins in vipslib:
Fatal Python error: can't initialise module vips
plugin: unable to open plugin "/home/john/vips/lib/resample.plg"
plugin: /home/john/vips/lib/resample.plg: undefined symbol: im_start_one
do we need to build plugins with -rpath etc. and more libs?
or do we need to make sure our python modules export all their im_ symbols?
check:
http://www.swig.org/Doc1.3/SWIGDocumentation.html#Python_nn8
http://docs.python.org/dist/dist.html
result = vips_call ("name", args)
then call that from VImage_method
- do we really need VImage_method? Can't we write
__getattr__ (self, name) = lambda (obj_to_call, arguments):
or something like that?
- TIFF load/save should use meta system for unknown tags
- balance should use new meta stuff
- magick2vips should spot ICC profiles and attach them as meta
- also png2vips?
- magick should set some header field for n_frames and frame_height? see also
analyze
- im_csv2vips() could use "-" for filename to mean stdin
but then we'd have to read to a malloced buffer of some sort rather than an
image, since we might need to grow it during the read, since we couldn't
then seek
- add erode/dilate 3x3 special case using a 512-bit LUT
... nope, actually slower :-( we end up doing an inner loop like
for( i = 0; i < 9; i++ )
bits |= (p[o[i]] != 0) << i;
which is horrible. Maybe if we had a one band true 1 bit image it'd be
quicker since we could get bits out in parallel and wouldn't have to worry
about converting non-zero to 1
could have a Coding type for bitpack? eg. relational produces a bitpack
image by default, boolean & morph can work on bitpack etc
maybe something for vips8 ... we could have a flag on operations for the
coding types they can accept, and if they are passed other type, they are
automatically converted
- non-linear sharpen: replace each pixel by the lightest or darkest neighbour
depending on which is closer in value
- can wrap other inplace funcs which use ink now we have vector_to_ink() in
inplace_dispatch.c
see also comments in nip2 TODO ... we could auto-wrap in vips_call.c
cleaner!
Reference in New Issue View Git Blame Copy Permalink