1 -*-outline-layout:(2 (-1 -1 0 :) 0);outline-stylish-prefixes:nil -*-
4 Features you cannot find in the doco as working, should be
5 mentioned here. This is an assorted collection of stuff that will be
6 done, might be done, or is an idea that I want to think about
8 Most of the items are marked in the code as well
9 Grep for TODO and ugh/ugr/urg.
12 . * header for PS enteredby = "bla <bla@bar.com>"
13 . * Hash_table::remove ().
14 . * 1. With "lilypond -f ps": The black notes with ledger lines seem to
15 > have extra "blobs" over and to the left of them and all the ledger
16 > lines from the staff to the note will have a blob too. For example,
17 > with the note "a4" there will be a black note at the ledger line where
18 > "c" would be too. However, only the "a4" will have the extra blob.
21 . * devise standard for functioning of Vertical_align_element.
22 . * fix interstaff slurs & beams.
23 . * staff size for post/prebreaks
25 . * input/star-spangled-banner
27 . * mutopia/J.S.Bach/wtk1-fugue2.ly
29 . * fix: text on rests: ridiculous dims
31 . * m=\notes\relative c'''{
34 R2*4 | c2 | c2 | c2 | c2 | c2 | c2 | c2 | c2 | c2 | \break
35 <{R2*10}{s2 \mark "A"; }> | % Too narrow space for the first rest in
38 [ ) g8-. fis16 ( g ][ ) fis8-. f16 ( g ] |
39 [ ) f8-. e16 ( f ][ ) e8-. es16 ( f ] |
40 [ ) es8 \f c16 ( d][es8 d16 c ] |
41 ) d4 r8 [g16 \p ( a ] |
42 [ ) g8-. fis16 ( g ][ ) fis8-. f16 ( g ] | \break
43 ) c2 | c2 | c2 | c2 | c2 | c2 | c2 | c2 | c2 |
54 \OrchestralPartStaffContext
59 . * P.P.S. It can be cool in mudela-book to distinguish in pre,postMudelaExample,
60 whether MudelaExample is epsed or not: ( if this fragment is floating eps, than 1,
61 otherwise 2). say preMudelaExample[eps]{}, and change it in document body sometimes.
62 . * fix singleStaffBracket
63 . * declare performers in \midi
65 . * \shape 1st dim skipped?
66 . * turn slope-damping on/off
68 . * fix height of / collisions with lyrics (chords),
69 see input/test/vertical-text.ly; input/test/repeat.ly
70 . * We need feta-din*.mf files for more sizes than 10.
71 . * latex bla.tex broken (titles / \lilyfooter stuff?
72 . * fix dynamics decently, ie. use kerning & ligatures.
73 . * dots & rest collisions?
75 . * \mudelafile{} to have decent functionality
77 . * support_l_arr_ empty in staff-margin's G_staff_side_item
78 . * slurs colllide with lyrics.
79 . * minVerticalAlign for StaffGroups.
80 . * fix OrchestralScore and Hara-kiri (i.e., fix Coriolan)
81 . * Phrasing: Indicating the textual underlay of a piece, or
82 otherwise dividing a piece into phrases.
84 There are distinct ways of specifying the first two (although at
85 present, they're not properly distinguished) but no distinct way to
86 specify the third. Should there be?
87 . * spacing of mmrests.
88 . * mem leak: redo p-score object deletion.
89 . * rest collision minimum dist.
91 . * spacing for prefatory matter
92 . * Score does not use points to describe musical sizes. I think becaue the music
93 > symbols are not part of any PostScript font. The line length is 7.5 inch (19.05
94 > cm) and the height of normal size is equivalent to the traditional raster 1
95 > size. (The Schott company sells Letraset sheets of musical symbols which are
96 > measured in raster sizes). It is agreed among most engravers I know that the
97 > standard size for adult readers in solo music should 70% of raster 1. Jeff's
98 > example was 75%, so I had to modify my file to match. Of course, the amount of
100 So that makes for a staff space of 4 2/3 point. I'll add the
101 dimensions to the TODO file.
103 . * accidentals closer to note head
104 . * ledger line for rest dim less
113 . * Rhythmic_grouping
115 . * Spring generation
120 . * \selectmusic to cut pieces from music.
121 . * Morally pure LilyPond.
122 . * Remove mutopia ramblings.
123 . * Remove non-free software links.
124 . * Remove meta article LilyPond.
125 . * TODO: merge atom & molecule; make tree from molecule.
126 . * break priority setting from SCM.
128 . * remove [] in favour of auto-beamer
129 . * The minimum distance between different staffs works only within
130 StaffGroups, not between StaffGroups. The Gade Score looks quite
131 strange on the pages where the Timpani and/or Brass sections don't
132 play. I've set the minimum distance with:
134 \OrchestralScoreContext
135 minVerticalAlign = 2.5*\staffheight;
137 . * hangOnClef with non-breakable clefs.
138 . * Aha, the problem is the new TeX code generation for changing fonts.
139 > (The explanation below is mostly intended for Han-Wen and Jan)
140 > Before, the font was changed with macros declared separately for
141 > pure TeX and LaTeX, but now all the fonts are declared directly in
142 > the generated code using the low-level TeX commands. This circumvents
143 > the fontencoding mechanism of LaTeX and is a potential source of
144 > problems also for us users of the Latin-1 character set.
145 > I think it still works since the inputencoding latin1 is
146 > declared by ly2dvi, but it still means that e.g. an o with
147 > umlaut is typeset as a combination of the two symbols 'o' and
148 > 'umlaut' instead of as a single character, as would be the case
149 > if fontencoding OT1 had been used. This shouldn't give any
150 > difference in layout, though. One of the main argument for using
151 > fontencoding OT1 is for the hyphenation mechanism to work, an
152 > argument that's clearly irrelevant in our application. Yet we
153 > see the problem for August.
154 . * Check gcc 2.8.1 compatibility
155 . * Abstraction for engravers:
156 . * make "in-between" engraver (Tie, Extender)
157 . * make wide_spanner_engraver (line_group_spanne,r staff_symbol)
158 . * remove Interval dim_ from Dimension_cache and rename the struct.
159 . * do scaled fonts generally
160 . * The Lilypond accidental symbols are available through the TeX macros,
161 \textflat, \textsharp and \textnatural defined in the init file
162 lilyponddefs.tex. All the symbols are defined in the files fetaXX.tex
163 where XX corresponds to the size. I don't know where (or even if) they
164 are installed but they are generated in the mf/out/ directory during the
166 . * make dependencies () a virtual function.
167 . * fix Repeated_music design
168 . * one big ly2dvi input that includes *all* tests.
169 . * store req -> element, element -> element causes for warnings
170 . * include examples in RPM.
171 . * fix partial measures in meaningful way.
172 . * add scripts to bars eg. |^"bla"
173 . * relative mode for mi2mu
174 . * uniformise recent feta contributions.
175 . * use SCM and Molecules for {accordeon stuff, }
176 . * bigger and fatter 4/4 C
177 . * sort out directory stuff.
179 . * -I option per filetype?
181 . * ly2dvi/lilypond logfile.
182 . * fractional chord durs.
183 . * hang Item on Spanner
184 . * do --safe for PS output?
185 . * convert-mudela --output
186 . * Staff_margin (with a partial measure.)
187 . * fix pletvisibility properties:
188 . * bracket on/off/no-bracket-when-beam
189 . * num on/off/no-num-when-beam
191 . * junk text{sharp,flat,etc}
192 . * fix convert-mudela manpage
193 . * decimal point in \paper {}
194 . * { \voiceone <a'4.*2/3 d''4.*2/3 fis''4.*2/3> [g''8 fis'' e''] d''4 |}
196 { \voicetwo d'4 d'2.*2/3 } spacing
197 . * tied notes for MIDI
198 . * sharp / flat on trills (in MIDI ??)
199 . * scm-ify \property values.
200 . * move class Lookup {} into scm
202 . * \breathmark TeX macro
203 . * add new glyphs to font.ly
204 . * formatting of input stuff.
205 . * \notes{ a \< b \cr } vs \notes{ a \< b \! }
206 . * space after bars?
207 . * 'hinterfleisch' before bar (e.g. wtk1-fugue2)?
208 . * Summary of minor spelling irregularities:
209 . * capitalization/use of underscores in property names
210 . * fix SkipBars -> skipBars
212 lbheel = \script { "bheel" 0 0 -1 0 0 }
213 rbheel = \script { "bheel" 0 0 1 0 0 }
214 lbtoe = \script { "btoe" 0 0 -1 0 0 }
215 rbtoe = \script { "btoe" 0 0 1 0 0 }
216 lfheel = \script { "fheel" 0 0 -1 0 0 }
217 rfheel = \script { "fheel" 0 0 1 0 0 }
218 lftoe = \script { "ftoe" 0 0 -1 0 0 }
219 rftoe = \script { "ftoe" 0 0 1 0 0 }
221 portato= \script { "portato" 0 -1 0 1 0 }
223 . * bottomnote for ly2dvi
226 . * compulsory hshift
227 . * Give # lines in linebreaking.
229 . * Align_element::padding ?
230 . * uniformise property names...
231 . * ydirection <-> yDirection
232 . * rather allow '_' in identifiers first (i.e. junk ^ and _),
234 . * typo checks on property names?
235 . * use streambufs and iostream
236 to provide IO handling for TeX stream, mudela stream, data-file.
237 . * seriously buffer TeX output (do profile of writing .5 mb TeX file.)
238 . * strip EXEs before installing
239 . * zip target for binary windows dist (JBR)
240 . * junking \skip req in lyrics
241 . * mi2mu empty staffs.
242 . * horizontal centering of dynamics
243 . * $DEPENDENCIES_OUTPUT support
244 . * Xdvi zooming ?! Try to understand GS garbage collection.
245 gs: Error: /undefined in draw_beam
247 . * fix vertical alignment and stafflines
248 . * declaring Performers
249 . * GrandStaff needs more work -- I want a single word
250 `harpsichord' to the left of the grandstaff, not one on each
251 stave. (Organ staff -- with separate pedal -- but common
252 properties may be something to think about. Of course for
253 organ you want to be able to give stop indications on the way
254 through, so the \property Voice.Instrument would be a stop,
255 and \property GrandStaff.instrument would be PipeOrgan...)
256 . * *.yo: fix pod manpage layout legacy
257 . * text-items clash with stems/beams
258 . * --include, -I option for ly2dvi (pass on to lily)
259 . * fix placement of beam-less abbrev
261 <{\voiceone cis4. cis8 cis4 | cis4 cis cis | r1 }
262 {\voicetwo cis,4 r r | r2. | r1 }> |
264 . * Musical_pitch (analogous to Duration and Rhythmic_req)
265 think about, analogous to pitch:
266 * { a4 a16 } c <-- duration of c?
267 * < a4 b8 > c <-- duration of c?
269 . * fix audio-items (don't use (input) requests, but copy data)
270 . * make sure all ex's have a mudela-version
271 . * do rest-collisions for Multi_measure_rests as well.
272 . * split error/warning in error/warning/non_fatal_error
273 . * add a Duration_convert member to Duration_iter to set parameters.
274 Junk global duration settings.
275 . * en-,discouraged linebreaking:
276 . * handle DISALLOW < penalty > FORCE
277 . * discourage breaking of slurs
278 . * fix variable define/lookup parser global<->paper
279 . * fix title/instrument placements; see input/test/title.ly
280 . * <\voiceone c4. \voicetwo c4>
281 . * add full cello suites to web site (kom op, Maarten!)
282 . * Rethink Time_description
283 \cadenza , \meter, \grouping should all be \properties
286 . * abbrev -> tremolo
287 . * abbreviation-beam -> (measured/unmeasured) tremolo
288 . * partial -> anacrouse
289 . * robustify Beam (in case of no stems, 32nd notes)
290 . * move paper vars into engraver properties
291 . * check for groff / troff/ nroff et
292 . * more intelligent file searching
293 . * disable spaces in TeX stuff
294 . * handle ^C for tmp/file creation.
295 . * make LilyPond RPM fully relocatable
296 . * dots & rest collisions.
297 . * the warning about the negative slur/tie length appears twice
299 . * better hshift (dots, distance, head dependent)
300 . * clefs (AG): The "8" should appear closer to the actual clef,
302 . * put errorlevel in Input class
303 . * junk nesting slurs
304 . * integrate midi-elts from mi2mu and lily?
307 . * the bracket is ugly (wings are too parabolic, should be more circular)
308 . * versioning for Feta
309 . * The `3' in the meter key is a one or two pixels too thin (at 600dpi)
311 . * design macro for penstroke with rounded endings
312 . * timesig C: fat yet less curved. Check out relations.
313 . * design decent macro for bulbed endings
314 . * printer dependencies.
315 . * y-refpoint for rests should be the 4th staffline (gclef: b')
316 . * clean-up eight+ rests
319 . * work out sizes of character fonts.
321 . * piano pedals: Ped/*
323 . * coda signs: Segno, O+
324 . * glissando, arpeggio
327 . * include important spacing dims in fetalog
329 . * GNU diff 2.7: diff -rN does not see a new directory with empty file
330 . * check out GCC signatures?
332 f = fopen ("/dev/null", "r")
335 . * tetex: mfplain.mem
336 .* 3RD PARTY PROJECTS:
337 . * make GCC warn about ctor that leaves member vars uninitialised.
339 . * 'double-fix' mode: ignore identical fix, rather than suggest
340 to revert patch direction when (more or less? exactly) the same
344 . * fix position of bar number
345 . * stack scripts in chords:
346 % fingering: footing:
347 < a-4 c-2 g-1 > < c-\ltoe e-\lheel >
349 . * slur parts as a script
350 . * stack parameterised scripts for fingering and footing:
353 . * automatically add a \version if not present.
356 . * convert-mudela -e empty.ly
358 . * emacs mudela-mode
359 . * should handle block comments too.
360 . * handle lexer modes (\header, \melodic, \lyric) etc.
363 . * fontlock: \melodic \melodic
365 . * use properties for:
371 . * optimal pagebreaking.
373 . * Unicode support? -> man 7 unicode
376 . * detect of 16/8 bit files
377 . * examples to go with it.
380 . * write a faster Spring_spacer (without matrices if possible)
381 . * relate energybound to linelen unitspace fontsize etc.
382 . * used fixed point fp?
385 . * output header info to MIDI too.
387 . * a musical dictionary. See Documentation/vocabulary-*, other
397 . * guitar chords (fret diagrams)
398 . * other chord name styles (american(?) style)
403 . * derive lily_stream, Dstream, texstream from ostream?
404 . * indentable stream as baseclass for TeX stream, lily stream, Dstream.
405 . * use dstream feature in mi2mu
406 . * integrate IO checking into stream class
413 . * add to MIDI output:
415 . * ornaments (and trills?)
420 > Would it be hard to add support for proper dynamics in MIDI output? I
421 > would really like to have this feature...
423 To answer this, I have to give a little background. Please say so if
426 Both audio and notation elements are created decentrally, when
427 LilyPond says "Interpreting music ... [8][16] etc." After all
428 elements are created, they are processed again to calculate all
429 parameters. After that is done, they are dumped onto the output (the
430 MIDI stream or the TeX file).
432 The audio and notation elements are created by objects called
433 performer and engraver respectively. They work by taking a chunk of
434 input (a so-called request), and using the request to create an audio
437 After some processing, the engraver sends the created elements to
438 its enclosing notation/performance context.
440 In the case of notation, engravers can also modify existing elements
441 created by sibling engravers. Eg. the beam-engraver will modify stems
442 when it creates a beam over a couple of stems. This is done in
443 Engraver::do_acknowledge_element () and
444 Engraver::do_process_acknowledged ().
446 In the case of audio, there are no mechanisms to modify existing audio
447 elements. After the audio elements are created, they are sent directly
448 to the enclosing context (an instance of Performer_group_performer),
449 through the method Performer::play ()
451 Concretely spoken, for dynamics you have to write a performer
452 (Dynamics_performer), that will take the input requests. If I
453 understand correctly, every MIDI note played must have its dynamic
454 strength set separately. That means the the Dynamics_performer must
455 set the strength of every Audio_note it finds. This means that one
456 has to modify existing Audio items. The best way of doing this is
457 with a broadcast/acknowledge process.
459 So the best way of handling this, is
461 1 supporting dynamic settings in Audio_note
463 2 mimicking the broadcast/acknowledge mechanism of the Engravers in
466 3 using that mechanism to write a Dynamics_performer that will modify
467 any notes it finds to set appropriate strengths.
469 You could also kludge this by deriving from Performer_group_performer
470 a performer that also sets dynamics within notes, but that is not the
471 elegant way to do it.
473 I'd say that the work involved is not hard, but you have to be fluent
474 with C++ and need some insight into the working of Notation Contexts
475 and friends. I guess I could do it in a day or so, but if you are not
476 so fluent with the inner workings of LilyPond, it could take you some
477 more time (A few more days?).
479 Please note, that I am *not* going to code this myself: my days are
480 valuable, and I think I have more interesting things to do than fixing
481 the MIDI output (I don't even have a soundcard). But I *do* want to help
482 you or other people with implementing this, so if you need help, don't
485 . * account for rhythmic position in measure
489 . * make separate class for Grace_*_engravers
490 (which is at Voice_gravs level)
491 . * make encapsulated spacing problems.
493 . * accidentals per Voice_group
495 . * Output class, handles : (smallish)
496 . * help text /(c) notice?
498 . * warning /errors/progress
499 . * abort on error/warning; exit status
500 . * quiet/ignore-version options
504 . * speed up PS code.
505 . * PS lines to .eps files
506 . * write custom prolog
511 . * remove links to non-free SW.
512 . * internal documentation
515 . * left/rightbeamcount
516 . * various other new properties.
521 . * Doc (C) stuff of sheet music
522 . * a better format? SGML? TeX? Info?
523 . * a better tutorial
525 . * more spanners (smallish)
529 . * Rewrite Stem, Beam and Rhythmic_grouping (hairy)
531 . * doc on Rhythmic_grouping
532 . * general shaving on Beam and Stem
533 . * use plet grouping
534 . * separate visual from rhythmic info even more
538 . * Ledger lines, should be separate item: Ledger_lines
539 . * set different line sizes / thicknesses
540 . * beam stem showthrough, inter beam sizes (french vs german style)
543 . * left/right note balls should be handled by Collision:
544 < \multi 2; { \stem 1; <b c> } { <f as b> } >
547 . * merge key{item} & localkey{item}?
548 . * spacing, national styles?
551 . * redo Notehead to allow digits as heads
552 . * add a \tablature {} lexer mode for easy entering
554 . * should adjust stemlength for flag number.
557 . * caching breakpoints
559 . * specify number of lines
562 . * \rhythms 4 16 16 16 16; c c c c c -> c4 c16 etc.
564 . * \type -> \context ?
567 . * \bla {} vs \bla ;
568 . * mix engraver hacking with music ?
569 . * \once\property KEY = VAL
570 . * \addtranslator, \removetranslator
571 . * junk ^ and _ for scripts
572 . * junk _ for lyrics.
573 . * abstract grammar.
574 . * Figure out semicolons.
575 . * c4 4 4 4 for c4 c4 c4 c4?
586 . * configure pitch_byte
587 . * rest name configurable
592 . * Faulenzer sign (% repeat)
594 . * fix confusing naming in Engraver vs Engraver_group_engraver (context)
596 . * progress when creating MIDI elts.
598 . * A range for context errors (eg. mark both { and }. )
600 . * lyric in staff (sharpsharp in staff, text below)
602 . * half sharps/flats
604 . * write Dynamic_line (to group dynamics horizontally)
606 . * use Real for all y positions.
608 . * half-sharps, half-flats
610 . * adaptive accidental spacing.
612 . * handle EOF graciously in error messages.
614 . * midi esp.: use I32 iso int where 32 bits are needed (or assumed...)
616 . * stafftypes: voice names/ instrument names.
620 . * % toe to bheel four to five
626 (where "to" is a tiny bow)
628 . * auxilliary file for caching info.
635 . * Output data structures of Mudela in XML/SGML.
636 . * create libmudela, or liblily_frontend
637 . * move MIDI stuff (including Quantization) to a ANSI C libmidi library.
638 . * Spacing_request for manually adjusting spacing
639 . * caching breakpoints
640 . * used fixedpoint arithmetic for min. energy.
641 . * move towards incremental algorithms.
642 . * versioning stuff (cvt mudela, mudela, etc.)
643 . * dynamic loading of engravers?
645 Han-Wen Nienhuys <hanwen@cs.uu.nl> writes:
648 > Foo_smob *smob_ptr_;
652 > Foo_class *class_ptr_
655 Usually you can get away without having this interlinked structure.
656 One piece of information you need when exporting objects to scheme is
657 the smob tag for your class. You might store this value (a long) into
658 a class static variable, or a file static variable. I'll use a class
659 static variable in this example.
661 I typically use code that works like this (untested code ahead):
664 static long *Foo_smob_tag;
665 SCM obj; // representation as a scheme object, description comes later
668 // call this once on startup
669 void init_Foo_class {
670 static scm_smobfuns type_rec;
672 type_rec.mark = foo_mark;
673 type_rec.free = foo_free;
674 type_rec.print = foo_display;
676 Foo_class::Foo_smob_tag = new int(scm_new_smob(type_rec));
679 When you want to export an object to scheme, you put a pointer to the
680 object itself in the cdr of the cell, and the tag in the car of the
681 cell. The code looks like this:
687 return(SCM_NIMP(obj) && SCM_CAR(obj) == Foo_class::Foo_smob_tag);
690 // given a Scheme representation, return, a C++ representation
694 return((Foo_class*)SCM_CDR(obj));
697 // the SCM representation of the object is stored inside itself
698 // this will become useful when destructor gets called
700 foo_box(Foo_class *foo)
703 SCM_NEWCELL(foo->obj);
704 SCM_SETCAR(foo->obj, Foo_class::Foo_smob_tag);
705 SCM_SETCDR(foo->obj, (SCM)foo);
710 > C++ determines life time, so what is the strategy?
712 What happens now when the destructor gets called? Lets set the cdr to
713 NULL, and then check for that in all of the primitive functions that
714 use your smob. We'll call this notion 'live'; a scheme object is
715 'live' if the C++ representation still exists, it's dead if the C++
716 object is gone. You can still have references to dead objects in
717 scheme code; it's just an error to use them. This idea is stolen from
718 Emacs's handling of buffers ('buffer-live-p' and friends).
720 Add another function, foo_live_p:
725 return(foo_p(obj) && SCM_CDR(obj) != NULL);
728 In you destructor, you need to do:
732 SCM_CDR(this->obj, NULL);
735 When writing new primitives, now just check foo_live_p().
737 I hope the above helps,
743 "Even if you are on the right track, you'll get run over
744 if you just sit there."
745 --Will Rogers (1879-1935)
750 (defvar outline-font-lock-keywords
751 '(;; Highlight headings according to the level.
752 ;; must change this to allout node layout
753 ;;("^\\(\\*+\\)[ \t]*\\(.+\\)?[ \t]*$"
754 ("^\\([.]*[ ]*[*]\\)[ \t]*\\(.*\\)$"
755 (1 font-lock-string-face)
756 (2 (let ((len (- (match-end 1) (match-beginning 1))))
757 (or (cdr (assq len '((1 . font-lock-function-name-face)
758 (2 . font-lock-keyword-face)
759 (3 . font-lock-comment-face))))
760 font-lock-variable-name-face))
762 ;; Highlight citations of the form [1] and [Mar94].
763 ("\\[\\([A-Z][A-Za-z]+\\)*[0-9]+\\]" . font-lock-type-face))
764 "Additional expressions to highlight in Outline mode.")
766 (add-hook 'outline-mode-hook
768 (setq font-lock-maximum-decoration t)
769 (setq font-lock-maximum-decoration t)
770 (make-local-variable 'font-lock-defaults)
771 (setq font-lock-defaults '(outline-font-lock-keywords t))
772 (font-lock-mode global-font-lock-mode)