171 lines
4.8 KiB
Plaintext
171 lines
4.8 KiB
Plaintext
- JPEG write should know about CMYK as well, maybe write all 4 band images as
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CMYK?
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- JPEG read could have a "subsample" param and use
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unsigned int scale_num, scale_denom
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Scale the image by the fraction scale_num/scale_denom.
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Default is 1/1, or no scaling. Currently, the only supported
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scaling ratios are 1/1, 1/2, 1/4, and 1/8. (The library design
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allows for arbitrary scaling ratios but this is not likely to
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be implemented any time soon.) Smaller scaling ratios permit
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significantly faster decoding since fewer pixels need be processed
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and a simpler IDCT method can be used.
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- HAVE_HYPOT could define a hypot() macro?
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- write our own python extension to call a vips operation by name
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result = vips_call ("name", args)
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then call that from VImage_method
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- do we really need VImage_method? Can't we write
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__getattr__ (self, name) = lambda (obj_to_call, arguments):
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or something like that?
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- try
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im_max ~/pics/wtc.jpg
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read: done in 8s
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iterate: done in 11s
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255
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nip2 --vips-progress -e 'max (Image_file "~/pics/wtc.jpg")'
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/home/john/.nip2-7.13.2/tmp/untitled-nip2-0-XOSIR1T.v: done in 18s
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iterate: done in 20s
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nip2 --vips-progress ~/pics/wtc.jpg
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/home/john/.nip2-7.13.2/tmp/untitled-nip2-0-X37AX1T.v: done in 23s
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... then "max A1" at the cmd line
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iterate: done in 32s
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is there a problem
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- test ppm writer
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- missing libstdc++ in link? what if we configure with no openexr?
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added -lstdc++ to VIPS_LIBS, but will this work on solaris etc.? maybe have
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a configure option to turn off CImg
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there must be an autoconf macro that finds the stdc++ library name
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- test maxpos_avg, quite a few changes
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- im_exr2vips can now use c++ api
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Python binding
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==============
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- python startup fails with plugins in vipslib:
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Fatal Python error: can't initialise module vips
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plugin: unable to open plugin "/home/john/vips/lib/resample.plg"
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plugin: /home/john/vips/lib/resample.plg: undefined symbol: im_start_one
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do we need to build plugins with -rpath etc. and more libs?
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or do we need to make sure our python modules export all their im_ symbols?
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check:
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http://www.swig.org/Doc1.3/SWIGDocumentation.html#Python_nn8
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http://docs.python.org/dist/dist.html
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WONTFIX
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=======
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- can we use GraphicsMagick instead of ImageMagick?
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no: current stable GraphicsMagick is missing (at least) QuantumRange and
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GetNextImageAttribute() ... perhaps this will be fixed in 1.2
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- TIFF load/save should use meta system for unknown tags
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- balance should use new meta stuff
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- magick2vips should spot ICC profiles and attach them as meta
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- magick should set some header field for n_frames and frame_height? see also
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analyze
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- see TODO notes in openexr read (though they all need more openexr C API)
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consider openexr write
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- im_csv2vips() could use "-" for filename to mean stdin
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but then we'd have to read to a malloced buffer of some sort rather than an
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image, since we might need to grow it during the read, since we couldn't
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then seek
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- add erode/dilate 3x3 special case using a 512-bit LUT
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... nope, actually slower :-( we end up doing an inner loop like
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for( i = 0; i < 9; i++ )
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bits |= (p[o[i]] != 0) << i;
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which is horrible. Maybe if we had a one band true 1 bit image it'd be
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quicker since we could get bits out in parallel and wouldn't have to worry
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about converting non-zero to 1
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could have a Coding type for bitpack? eg. relational produces a bitpack
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image by default, boolean & morph can work on bitpack etc
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maybe something for vips8 ... we could have a flag on operations for the
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coding types they can accept, and if they are passed other type, they are
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automatically converted
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- non-linear sharpen: replace each pixel by the lightest or darkest neighbour
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depending on which is closer in value
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- can wrap other inplace funcs which use ink now we have vector_to_ink() in
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inplace_dispatch.c
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see also comments in nip2 TODO ... we could auto-wrap in vips_call.c
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cleaner!
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- on win32, should not write matrix files in binary mode, we want CR/LF chars
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so we can load into excel etc easily
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how odd, we're doing
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if( !(fp = fopen( name, "w" )) ) {
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shouldn't be binary ... hmm
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Build
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=====
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- xmlFree() is still broken :-(
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maybe we are not importing it correctly? im_readhist.c references
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_imp__xmlFree
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how is this made? look at gcc -E output ... maybe there's an extra define we
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need to make it generate the right link code?
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see what libxml2.dll.a is exporting that looks anything like xmlFree
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- can we make a fftw3.dll? also, magick.dll?
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maybe just build with no-undefined? can we then link the DLL against the
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static lib?
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- update gtk/glib/etc. on the PC to the latest versions, apparently much
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quicker (esp. pango)
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This TODO list is now held on the VIPS Wiki
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http://wiki.vips.ecs.soton.ac.uk/bin/view/Vips/TodoVips7
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