3 Release Plans (subject to change)
6 brown-bag bugs may add intermediate releases. The dates are goals,
10 - set i_format for every file type on read and test for it:
20 - check each file reader for possible integer overflows
28 - check bmp code uses image data offset correctly - done
29 - check quant code for integer overflows - done
30 - check for old URLs (umich and imager.perl.org/~addi/...) - done
35 - audit rgb.c and add tests
36 - capture TIFF read warnings (i_warnings tag?)
37 - add Imager::Cookbook with at least 5 recipes
38 - implement i_incomplete for bmp files
39 - store floating point tags in an appropriate precision
40 - allow image creation to fail on malloc() failure for the image data
41 rather than aborting. The current behaviour could be a denial of
43 - eliminate unused variable warning (especially the RETVAL ones in Imager.xs)
46 - allow limits to be set on the size of an image read from a file. This is
47 to prevent an attacker supplying huge images that consume all of
48 memory causing a denial of service attack.
49 - add Imager::Tutorial (see Tk::UserGuide for a structure)
50 don't cover installation - belongs in README or INSTALL
51 it doesn't need to cover everything - read/write/create/simple drawing
52 and simple text - other stuff belongs in the cookbook or in sample code
53 - add 5 more recipes to Imager::Cookbook
54 - implement gsamp()/gsampf()/plin() etc methods for those low level image
55 interfaces which don't yet have methods.
56 - implement i_incomplete for png and gif files.
61 Some of what's listed below has been implemented.
63 - should i_incomplete be optional? ie. reading a short image results in
64 an error unless the user requests incomplete images.
67 - Add scalar/mmap to iolayer
68 - Add close() code to iolayer for fakeseek sources.
69 - Merge callback interface into iolayer
71 - Implment the maxread threshold (Indicates how much can
72 be read from a source before it stops reading from its
73 underlying source. For making sure only the relevant
74 data is read from a socket for example.
76 Enhanched internal structure:
78 MultiImage & metadata support:
79 - Figure what interface should be between C and perl?
80 - How to store data in the C interface for tags/metadata?
81 Support tiff's madness, i.e. tags and options.
82 - Error handling, make a general i_errstr object and arrange
83 such that each image has an i_errstr object to hold its
85 - SEE design/represent.txt for proposed new structure and
86 interface design that takes these factors into account.
87 - define common i_* tags for specifying attribute common among images
88 like spatial resolution (implement for other image types, especially
89 TIFF) (Spatial resolution is supported for all types that support
90 it - are there any other common properties we can add?)
91 - implement the i_incomplete tag for other formats
94 - Add mng support, pcx and aalib support.
95 - Windows icon files (.ico)
97 - photoshop files (I think I've seen docs)
100 - WMF (extract bitmap data on read)
101 - gzip or bzip2 compressed raw
102 - postscript for output
103 - PAM file support (man pam in recent PNM tools)
105 - Transforms, interpolated multidimensional lookup tables.
106 Usefull for CMYK <-> RGB table lookup.
108 - advanced font layout (spacing, kerning, alignment) (Artur?)
110 - ways to check if characters are present in a font, eg. checking if
111 ligatures are present (done for FreeType2)
113 - font synthesis - synthesize a bold or slanted font from a normal font
114 (or even from an existing bold or slanted font)
116 - utf8 support for text output
117 (available for FT1, freetype2, should be easy for Win32)
119 - easy interfaces for text output:
120 - align text around point, including:
121 - left, center, right horizontal alignment
122 - top, center, baseline, bottom alignment
123 - choose whether to base alignment upon character cells or font
124 metrics to avoid spacing problems between lines
125 - fill a box from text, with newline handling
126 - an option to just return the information that would be used to
127 output the text, so it can be used for sizing calculations
128 - how much text fit in the box/how much space is left in the box
129 - fill a box with rich text (size and font changes)
131 - wrapping around boxes/images
134 - tools to get more information about fonts/characters:
135 - name of font "Arial Bold Italic" vs "arialbi.ttf"
136 - ABC widths for characters (currently the only way to get the C width
137 for a character is to get the width with a following space and without
141 - encodings for text output (maybe using the Encode module to work
144 - image rotation, 3 ways of doing rotation:
145 - rotation by shearing, which produces makes lengths in the image larger,
147 (2 of the 3 have been done)
149 - read_multi() needs to handle other multi-image types,
150 (handles TIFF and GIF)
152 - write_multi() to save other multi-image types, (handles TIFF and GIF)
153 - pnm binary formats support multiple images per file
155 - compose channels - build a new image based on channels from several
160 - complex lines/curves:
162 - dotted/dashed lines
164 - end-point controls (butt-end, square-end, round-end, pointy, arrows)
165 - brush-lines (as with the Gimp, or Photoshop)
166 - more complex with multiple strokes and various randomness as with
167 Fractal Design Painter (or later versions of Corel Photo Paint)
168 - complex line shapes:
170 - general curves (cubic or bezier, whichever is more general)
171 - easy access to general curves:
172 - points to make a nice curve from
173 - various circular curves (centre, radii, start/end angles,
175 - Complex thick lines are probably more useful than brush-lines for
176 the things I expect Imager to be used for.
177 - http://www.develop-help.com/imager/strokes.png (.jpg for smaller version)
179 - have Imager::Color{::Float}? use Graphics::ColorNames if present.
182 - Make sure everything is doable with the OO interface
183 i_flood_fill() for example.
184 - include low-level functions like gsamp() and so on
186 - Compile with memory debugging enabled and fix all leaks
188 - Add mycalloc() memory allocation wrappers.
190 - should we overload <=> or cmp for Imager::Color objects?
191 too many worms, leave it out
193 - should the interlace option for reading raw images have
194 symbolic names in the OO interface?
196 - improve consistency in the interfaces, both in trying to use named
197 parameters where possible but also in using consistent names, eg.
198 (tx, ty) vs (left, top) in rubthrough() vs paste(). Do we want a (simple)
199 standard for this (suggested names)? Remember to preserve the old
200 interface where possible.
202 - try to clean up the inconsistencies between font types:
203 - utf8 (even if we just treat characters over 0xFF as missing for T1)
204 (done for FT2, FT1, T1)
205 - transformations (done for FT2)
206 - has_char() method (done for FT2, FT1, T1)
208 Format specific issues:
209 - provide patches for libgif and libungif that fix their bugs
210 and give a useful extension interface. Probe for the
211 installation of the patches in Makefile.PL to let gif.c
212 know what features it can use.
214 - Add options for pnm writer to save in any of the p1..P6
215 formats. Even if the input has 1 channel, write 3 and such
216 cases. Also allow ascii mode. Need to be able to write
217 pbm images which needs ties to the quantization code.
219 - save paletted images as paletted where that's supported. Done
220 for gif/tga/bmp/tiff. Not done for png yet.
222 - read other format paletted images as paletted images. This has
223 been done for gif/tga/bmp/tiff formats but not for png.
225 - read/write 16-bit/sample images as such for tiff
227 - read more metadata from images, esp tiff tags, EXIF format information
230 - handle 16-bit/sample pgm/ppm files
233 - Add to the documentation
235 - sample code and Imager/Samples.pod describing them
236 - Imager/Cookbook.pod
237 - Write a guide to installing the helper libraries
238 - Go through the entire project and add comments in pod
239 so doco.perl can be used to read them.
240 - see the IRC log in design/doclayout.txt
245 - use prompt() (from ExtUtils::MakeMaker) for questions in Makefile.PL
246 - use the library's mechanism's to find the library if needed, for
247 example, freetype-config for FT2
248 - the freetype2 library is built as "freetype.lib" on Win32 and needs
249 to be renamed to be found by the configuration process and included
250 with -lfreetype. Try to work around that.
251 - freetype2 and freetype1 tend to be installed in /usr/include/freetype2
252 and /usr/include/freetype directories, or similarly named (somedir/freetype
253 for example), instead of putting these directly into the search path
254 search for the freetype{2}?/someheader and then add the subdirectory if
255 we find the file in that directory.
256 - switch to Test::More
257 - change headers to use more unique re-include protection macros