Changes

[http://www.lilypond.org LilyPond] is a great music engraver, and you can include LilyPond in ConTeXt source using [httphttps://modulesgithub.contextgardencom/adityam/filter the filter module] with some setup.net/t-lilypond This is different from using the lilypond module-book preprocessor with LaTeX. (For LaTeX there’s also a package that works similar to our ConTeXt setup here: [https://github.com/jperon/lyluatex lyluatex].)

== Simple Filter Setup == This works with ConTeXt MkII and MkIV, but takes only the first page of multi-pages scores, and you must create the folder "lilytemp" manually:

\def\readPDFfile#1{\externalfigure[#1]} \usemodule[filter]\defineexternalfilter[lilypond] [continue=yes, readcommand=\readPDFfile, directory=lilytemp/, % directory for LilyPond's files output={\externalfilterbasefile.pdf}, filtercommand={lilypond-dbackend=eps -ddelete-intermediate-files -o"lilytemp/\externalfilterbasefile" "\externalfilterinputfile"}]

== Snippets Multi Page Filter Setup == This uses Lua and therefore only works with ConTeXt MkIV. It includes all pages of multi-page scores.It doesn’t look into the complete (multi-page) PDF, but reads a "-system.count" auxiliary file written by LilyPond that contains the number of systems (pages) and includes the single-system PDFs.

There are some notes \lilyponddef\LILYTEMP{lilytemp} % name of folder for LilyPond/buffer files \def\ParseLilypondFile#1% #1 is the name of the output file { \relativectxlua{bes a c bthirddata.parselilypondfile("#1")}}  \startluacode thirddata = thirddata or {} embedded in this line -- create temp folder if missing if not lfs.isdir("\LILYTEMP") then lfs.mkdir("\LILYTEMP") end function thirddata.parselilypondfile(name) -- include all systems (pages) -- name is like \LILYTEMP/mainfile-temp-lilypond-21.pdf logs.report("LILYPOND","name='" .. name .. "'") local scname = string.gsub(name, '%.pdf$', '-systems.count') local syco = tonumber(io.loaddata(scname)) or 0 for nr = 1, syco do logs.report("LILYPOND","including system no." .. nr) context("\\externalfigure[" .. string.gsub(name, '%.pdf$', '-' .. nr) .. "]") end end\stopluacode \usemodule[filter]\defineexternalfilter[lilypond] [continue=yes, cache=yes, readcommand=\ParseLilypondFile, directory=\LILYTEMP/, output={\externalfilterbasefile.pdf}, filtercommand={lilypond -dbackend=eps -o"\LILYTEMP/\externalfilterbasefile" "\externalfilterinputfile"}]

E.g. for == LilyPond Settings == Collect your LilyPond settings in a songbook you want to place big chunks of LilyPond output (i.e. note staffs) ly file, put it in your text. It behaves lilytemp directory and include it from within your lilypond block like any other graphics, especially similar to embedded [[Metapost|MetaPost]] codethis:

\section{A Tune}startlilypond\include "mysettings.ly"...\stoplilypond</texcode>

You can avoid this \startlilypondinclude line following [http://modules.contextgarden.net/dl/t-filter/doc/context/third/filter/filter.txt filter module documentation], section "Prepend and append text".In short: you can inline your complete LilyPond settings or at least the include line: <texcode>\relative startbuffer[lilypond::settings]\include "mysettings.ly"\stopbuffer \defineexternalfilter[lilypond][ ... bufferbefore={lilypond::settings}, ...]</texcode> === Sample Include File === "mysettings.ly" could look like this: <texcode>\repeat volta version "2 {.18.2"#(ly:set-option (quote no-point-and-click))#(set-global-staff-size 14) % --- start of setup for single-line output files ---#(define default-toplevel-book-handler \partial 4 e4 | print-book-with-defaults-as-systems ) a2 c4 d | e2 f4 e |#(define toplevel-book-handler d2 (lambda ( . c4 |rest) b4 (set! output-empty-score-list #f) (apply print-book-with-defaults rest))) #(define toplevel-music-handler (lambda ( . c8 d4 e |rest) a,2 c4 d | (apply collect-music-for-book rest))) e2 f4 e | g,2 a |#(define toplevel-score-handler \partial 2 (lambda ( . b2rest) (apply collect-scores-for-book rest))) #(define toplevel-text-handler (lambda ( . |rest) (apply collect-scores-for-book rest))) #(set! output-empty-score-list #t) % --- stop single-line setup --- \paper { }#(define dump-extents #t) indent = 0\repeat volta 2 {mm ragged-bottom = ##t ragged-last-bottom = ##t print-page-number = ##f line-width = 120\partial 4 r4 |mm oddFooterMarkup = ##f oddHeaderMarkup = ##f' g bookTitleMarkup = ##f d | e scoreTitleMarkup = ##f e c | a b c d |} \layout { #(layout-set-staff-size 14) % beware, this resets fonts! % set fonts for rm / ss / tt #(define fonts (make-pango-font-tree "TeX Gyre Schola" "LMSans10" "LMTypewriter10 Regular" (/ 14 20))) \context { \Score e2. e4 |\remove "Bar_number_engraver" f g f8 e d4 |\override PaperColumn #'keep-inside-line = ##t e f e c | } a c b8 a g4 | % some example settings \context { \Staff \override TimeSignature #'style = #'numbered } \alternative context {\ChordNames { \partial 2. g2. }chordChanges = ##t majorSevenSymbol = \markup{ \partial 2. a2. 7+ }

Please look up the meaning of settings in [http://lilypond.org/doc/v2.18/Documentation/web/manuals LilyPond’s great documentation]! If you’d like to exchange measures like text width between ConTeXt and LilyPond, you could write those into the LilyPond buffer.To give LilyPond measures to ConTeXt, you would need to write them into a temp file (using Scheme) and read that in again (useing Lua).For the time being this is left as an exercise to the user. ;) Unfortunately you can’t define LilyPond’s text (lyrics) size with an absolute value, but only relative to staff size... == Developer's Corner Named Buffers == Normally, your LilyPond snippets just get a running number. If you re-order your scores, each one gets re-rendered. You can avoid that if you name your LilyPond snippets: just add <tt>[name=myfunnyname]</tt> to {{cmd|startlilypond}}. If you have just one LilyPond part per component (e.g. songs in a songbook), you could use <tt>[name=\currentcomponent]</tt>. == Automatical width adaption == If you want to set your note line width automatically to your current text width, try this:  -- this goes after "create temp folder" io.savedata("\LILYTEMP/texsettings.ly", "\\paper { line-width = " .. string.gsub(number.todimen(tex.dimen.textwidth),"pt","\\pt") .. " } \n") and then adapt your snippets or preamble buffer:<texcode>\include "../mysettings.ly"\include "texsettings.ly"</texcode> You must comment/delete the "line-width" setting in mysettings.ly, otherwise it doesn’t work.

Things that have not been implemented yet include:* set the text font (default should be ConTeXtHere's bodyfont instead an example of placing score snippets in the body of LilyPond's)* make lilypond call back on ConTeXt for included TeX (cf. [http://lsr.dsi.unimi.it/LSR/Item?id=107])* get information from lilypond about the baselinetext, for run-with fonts in music fragments* tell lilypond how much space is left on the first page* check and probably work on proper multi-page music* LilyPond variablesscore & body matching:

<texcode>\def\LILYTEMP{lilytemp} % name of folder for LilyPond uses fontconfig for font search. At least on MacOS X it's very restricted what kind of fonts it can use - only single-style TrueType (including dfont). I didn't manage yet to use fonts from the TeX tree. (That doesn't seem to be fontconfig's fault - it writes appropriate font cache /buffer files everywhere.)

To remember:\def\ParseLilypondFile#1% #1 is the name of the output file* see [http://lilypond.org/doc/v2 {\ctxlua{thirddata.7/Documentation/out-www/ LilyPond Docs]!* How do we handle version/syntax changes of LilyPond?parselilypondfile("#1")}}

=== LilyPond function thirddata.parselilypondfile(name) -- include all systems (pages) -- name is not found like \LILYTEMP/mainfile-temp-lilypond-21.pdf logs.report("LILYPOND","name='" .. name .. "'") local scname =string.gsub(name, '%.pdf$', '-systems.count') local syco =tonumber(io.loaddata(scname)) or 0

Calling lilypond from command line in Windows fails for nr = 1, syco do logs. report(Seems like a bug in lilypond"LILYPOND","including system no." .. nr) context("\\setupfloats[location=right,frame=off]\\placefigure[none]{}{\\externalfigure[" .. string.gsub(name, '%.pdf$', '-' .. nr) .. "]}") end end\stopluacode

You have two options:\usemodule[filter]* modify the module\defineexternalfilter[lilypond] [continue=yes, cache=yes, so that lilypond is called with the whole path (<code>C: readcommand=\ParseLilypondFile, directory=\LILYTEMP/prog/lilypond/usr/bin/lilypond</code> for example instead of <code>lilypond</code> alone).,* place a <code>lilypond output={\externalfilterbasefile.bat</code> somewhere in your search pathpdf}, calling c:/prog/ filtercommand={lilypond-dbackend=eps -dinclude-eps-fonts -dno-gs-load-fonts -o"\LILYTEMP/usr/bin/lilypond %1 %2 %3 %4 %5 %6 %7 %8 %9\externalfilterbasefile" "\externalfilterinputfile"}]

Calling lilypond from ConTeXt via shell exit (write18) in MacOS X also fails \setuplayout[textwidth=6in] % matches line-width below\definefontfeature[main][protrusion=quality, even if the shell's path is right. (Seems more like write18 wouldn't use the environment.) Modify the module (try <tt>which lilypond</tt> to get its path).expansion=quality]\definefontfamily[mainface][rm][Adobe Jenson Pro][features=main]\setupbodyfont[mainface,13pt]\setupalign[hz,hanging]

#!/bin/sh\input zapf \startlilypond \layout{ indent=0\mm ragged-right = ## where was the app installed?f}\paper INSTALLDIR{myStaffSize =/Applications#20 #(define fonts if [ "$1" == " (make-pango-printfont-appdirtree "Adobe Jenson Pro" ]; then echo "$INSTALLDIR/LilyPond.app/Myriad Pro" exit 0 "Myriad Pro" fi(/ myStaffSize 20))) line-width=6\in oddFooterMarkup=## where to put the outputf export LILYPOND_DESTDIR oddHeaderMarkup=`pwd`##f bookTitleMarkup = ##f scoreTitleMarkup = ## run the programf python "$INSTALLDIR}melody = \relative c'' { \clef treble \key c \major \time 4/LilyPond.app4  a b c d} text = \lyricmode {Aaa Bee Cee Dee} upper = \relative c'' { \clef treble \key c \major \time 2/Contents4  a4 b c d} lower = \relative c { \clef bass \key c \major \time 2/Resources/lilycall.py4  a2 c} \score { << \new Voice = "mel" { \autoBeamOff \melody } \new Lyrics \lyricsto mel \text \new PianoStaff << \new Staff = "upper" \upper \new Staff = "lower"$INSTALLDIR\lower >> >> \layout { \context { \Staff \RemoveEmptyStaves } }} \stoplilypond\input tufte \stoptext</LilyPondtexcode> == Too many open files == With bigger projects and the above setup you might run into "too many open files" errors, at least in Linux, OSX and other Unix-like OSes.app/" Ask your shell about the open files maximum and set it higher:  $ ulimit -n 256 $@ulimit -S -n 2048

=== The old LilyPond stops module (t-lilypond) doesn't work any more with an 'Unbound variable' error ===recent versions of ConTeXt, therefore we removed its documentation here.