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?) (done)
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 (done)
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
42 service attack. This has limited utility because of the way memory
43 over commitment works on Linux (reverted)
44 - eliminate unused variable warning (especially the RETVAL ones in Imager.xs)
45 - add META.yml (bypass EU::MM's limited mechanism)
46 - check if freetype 2 is faster/slower than freetype 1 with Imager's glyph
47 caching. If FT1 is faster, add caching as a TODO for FT2.
48 - handle probing for libraries better (use pkg-config or I<library>-config
49 where possible (freetype2 and libpng)) (done)
50 - add concept index to Imager.pm pod
51 - replace testimg/penguin-base.ppm with a smaller image
52 - add a sample CGI HTML and image generation scripts that work together,
53 with appropriate security management
54 - examples for fountain filter in Imager::Filters
57 - allow limits to be set on the size of an image read from a file. This is
58 to prevent an attacker supplying huge images that consume all of
59 memory causing a denial of service attack.
60 - add Imager::Tutorial (see Tk::UserGuide for a structure)
61 don't cover installation - belongs in README or INSTALL
62 it doesn't need to cover everything - read/write/create/simple drawing
63 and simple text - other stuff belongs in the cookbook or in sample code
64 - add 5 more recipes to Imager::Cookbook
65 - implement gsamp()/gsampf()/plin() etc methods for those low level image
66 interfaces which don't yet have methods.
67 - implement i_incomplete for png and gif files.
72 Some of what's listed below has been implemented.
74 - should i_incomplete be optional? ie. reading a short image results in
75 an error unless the user requests incomplete images.
78 - Add scalar/mmap to iolayer
79 - Add close() code to iolayer for fakeseek sources.
80 - Merge callback interface into iolayer
82 - Implment the maxread threshold (Indicates how much can
83 be read from a source before it stops reading from its
84 underlying source. For making sure only the relevant
85 data is read from a socket for example.
87 Enhanched internal structure:
89 MultiImage & metadata support:
90 - Figure what interface should be between C and perl?
91 - How to store data in the C interface for tags/metadata?
92 Support tiff's madness, i.e. tags and options.
93 - Error handling, make a general i_errstr object and arrange
94 such that each image has an i_errstr object to hold its
96 - SEE design/represent.txt for proposed new structure and
97 interface design that takes these factors into account.
98 - define common i_* tags for specifying attribute common among images
99 like spatial resolution (implement for other image types, especially
100 TIFF) (Spatial resolution is supported for all types that support
101 it - are there any other common properties we can add?)
102 - implement the i_incomplete tag for other formats
105 - Add mng support, pcx and aalib support.
106 - Windows icon files (.ico)
107 - ILBM (Amiga) images
108 - photoshop files (I think I've seen docs)
111 - WMF (extract bitmap data on read)
112 - gzip or bzip2 compressed raw
113 - postscript for output
114 - PAM file support (man pam in recent PNM tools)
116 - Transforms, interpolated multidimensional lookup tables.
117 Usefull for CMYK <-> RGB table lookup.
119 - advanced font layout (spacing, kerning, alignment) (Artur?)
121 - ways to check if characters are present in a font, eg. checking if
122 ligatures are present (done for FreeType2)
124 - font synthesis - synthesize a bold or slanted font from a normal font
125 (or even from an existing bold or slanted font)
127 - utf8 support for text output
128 (available for FT1, freetype2, should be easy for Win32)
130 - easy interfaces for text output:
131 - align text around point, including:
132 - left, center, right horizontal alignment
133 - top, center, baseline, bottom alignment
134 - choose whether to base alignment upon character cells or font
135 metrics to avoid spacing problems between lines
136 - fill a box from text, with newline handling
137 - an option to just return the information that would be used to
138 output the text, so it can be used for sizing calculations
139 - how much text fit in the box/how much space is left in the box
140 - fill a box with rich text (size and font changes)
142 - wrapping around boxes/images
145 - tools to get more information about fonts/characters:
146 - name of font "Arial Bold Italic" vs "arialbi.ttf"
147 - ABC widths for characters (currently the only way to get the C width
148 for a character is to get the width with a following space and without
152 - encodings for text output (maybe using the Encode module to work
155 - image rotation, 3 ways of doing rotation:
156 - rotation by shearing, which produces makes lengths in the image larger,
158 (2 of the 3 have been done)
160 - read_multi() needs to handle other multi-image types,
161 (handles TIFF and GIF)
163 - write_multi() to save other multi-image types, (handles TIFF and GIF)
164 - pnm binary formats support multiple images per file
166 - compose channels - build a new image based on channels from several
171 - complex lines/curves:
173 - dotted/dashed lines
175 - end-point controls (butt-end, square-end, round-end, pointy, arrows)
176 - brush-lines (as with the Gimp, or Photoshop)
177 - more complex with multiple strokes and various randomness as with
178 Fractal Design Painter (or later versions of Corel Photo Paint)
179 - complex line shapes:
181 - general curves (cubic or bezier, whichever is more general)
182 - easy access to general curves:
183 - points to make a nice curve from
184 - various circular curves (centre, radii, start/end angles,
186 - Complex thick lines are probably more useful than brush-lines for
187 the things I expect Imager to be used for.
188 - http://www.develop-help.com/imager/strokes.png (.jpg for smaller version)
190 - have Imager::Color{::Float}? use Graphics::ColorNames if present.
193 - Make sure everything is doable with the OO interface
194 i_flood_fill() for example.
195 - include low-level functions like gsamp() and so on
197 - Compile with memory debugging enabled and fix all leaks
199 - Add mycalloc() memory allocation wrappers.
201 - should we overload <=> or cmp for Imager::Color objects?
202 too many worms, leave it out
204 - should the interlace option for reading raw images have
205 symbolic names in the OO interface?
207 - improve consistency in the interfaces, both in trying to use named
208 parameters where possible but also in using consistent names, eg.
209 (tx, ty) vs (left, top) in rubthrough() vs paste(). Do we want a (simple)
210 standard for this (suggested names)? Remember to preserve the old
211 interface where possible.
213 - try to clean up the inconsistencies between font types:
214 - utf8 (even if we just treat characters over 0xFF as missing for T1)
215 (done for FT2, FT1, T1)
216 - transformations (done for FT2)
217 - has_char() method (done for FT2, FT1, T1)
219 Format specific issues:
220 - provide patches for libgif and libungif that fix their bugs
221 and give a useful extension interface. Probe for the
222 installation of the patches in Makefile.PL to let gif.c
223 know what features it can use.
225 - Add options for pnm writer to save in any of the p1..P6
226 formats. Even if the input has 1 channel, write 3 and such
227 cases. Also allow ascii mode. Need to be able to write
228 pbm images which needs ties to the quantization code.
230 - save paletted images as paletted where that's supported. Done
231 for gif/tga/bmp/tiff. Not done for png yet.
233 - read other format paletted images as paletted images. This has
234 been done for gif/tga/bmp/tiff formats but not for png.
236 - read/write 16-bit/sample images as such for tiff
238 - read more metadata from images, esp tiff tags, EXIF format information
241 - handle 16-bit/sample pgm/ppm files
244 - Add to the documentation
246 - sample code and Imager/Samples.pod describing them
247 - Imager/Cookbook.pod
248 - Write a guide to installing the helper libraries
249 - Go through the entire project and add comments in pod
250 so doco.perl can be used to read them.
251 - see the IRC log in design/doclayout.txt
256 - use prompt() (from ExtUtils::MakeMaker) for questions in Makefile.PL
257 - use the library's mechanism's to find the library if needed, for
258 example, freetype-config for FT2
259 - the freetype2 library is built as "freetype.lib" on Win32 and needs
260 to be renamed to be found by the configuration process and included
261 with -lfreetype. Try to work around that.
262 - freetype2 and freetype1 tend to be installed in /usr/include/freetype2
263 and /usr/include/freetype directories, or similarly named (somedir/freetype
264 for example), instead of putting these directly into the search path
265 search for the freetype{2}?/someheader and then add the subdirectory if
266 we find the file in that directory.
267 - switch to Test::More
268 - change headers to use more unique re-include protection macros