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 \def\LILYTEMP{lilytemp} % name of folder for LilyPond/buffer files \def\ParseLilypondFile#1% #1 is the name of the output file {\ctxlua{thirddata.parselilypondfile("#1")}} \startluacode thirddata = thirddata or {} -- 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={ \relativeexternalfilterbasefile.pdf}, filtercommand={bes lilypond -dbackend=eps -o"\LILYTEMP/\externalfilterbasefile" "\externalfilterinputfile"}]</texcode>  == LilyPond Settings == Collect your LilyPond settings in a c b} } embedded .ly file, put it in your lilytemp directory and include it from within your lilypond block like this : <texcode>\startlilypond\include "mysettings.ly"...\stoplilypond</texcode> You can avoid this \include linefollowing [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>\startbuffer[lilypond::settings]\include "mysettings.ly"\stopbuffer \defineexternalfilter[lilypond][ ... bufferbefore={lilypond::settings}, ...]

== Sections = Sample Include File ===

E"mysettings.g. for a songbook you want to place big chunks of LilyPond output (i.e. note staffs) in your text. It behaves ly" could look like any other graphics, especially similar to embedded [[Metapost|MetaPost]] codethis:

\section{A Tune}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 print-book-with-defaults-as-systems ) #(define toplevel-book-handler (lambda ( . rest) (set! output-empty-score-list #f) (apply print-book-with-defaults rest))) #(define toplevel-music-handler (lambda ( . rest) (apply collect-music-for-book rest))) #(define toplevel-score-handler (lambda ( . rest) (apply collect-scores-for-book rest))) #(define toplevel-text-handler (lambda ( . rest) (apply collect-scores-for-book rest))) #(set! output-empty-score-list #t)

\startlilypond% --- stop single-line setup --- \relative 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 e4 |mm a2 c4 d | oddFooterMarkup = ##f oddHeaderMarkup = ##f e2 f4 e | bookTitleMarkup = ##f d2. c4 | scoreTitleMarkup = ##f b4. c8 d4 e |} a,2 c4 d | e2 f4 e |\layout { g #(layout-set-staff-size 14) % beware,2 a |this resets fonts! \partial 2. b2. | % set fonts for rm / ss / tt }#(define fonts (make-pango-font-tree "TeX Gyre Schola" "LMSans10" "LMTypewriter10 Regular" (/ 14 20))) \repeat volta 2 context {\Score \partial 4 r4 |remove "Bar_number_engraver" f\override PaperColumn #' g f d |keep-inside-line = ##t e f e c | } a b c d | % some example settings e2. e4 | \context { \Staff f g f8 e d4 | \override TimeSignature #'style = #'numbered e f e c | a c b8 a g4 | } \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... == DeveloperNamed 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. == Example == Here's Corner an example of placing score snippets in the body of the text, with fonts in the score & body matching: <texcode>\def\LILYTEMP{lilytemp} % name of folder for LilyPond/buffer files \def\ParseLilypondFile#1% #1 is the name of the output file {\ctxlua{thirddata.parselilypondfile("#1")}} \startluacode thirddata = thirddata or {}  -- 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$', '-systems.count') local syco = tonumber(io.loaddata(scname)) or 0  for nr = 1, syco do logs.report("LILYPOND","including system no." .. nr) context("\\setupfloats[location=right,frame=off]\\placefigure[none]{}{\\externalfigure[" .. string.gsub(name, '%.pdf$', '-' .. nr) .. "]}") end end\stopluacode \usemodule[filter]\defineexternalfilter[lilypond] [continue=yes, cache=yes, readcommand=\ParseLilypondFile, directory=\LILYTEMP/, output={\externalfilterbasefile.pdf}, filtercommand={lilypond -dbackend=eps -dinclude-eps-fonts -dno-gs-load-fonts -o"\LILYTEMP/\externalfilterbasefile" "\externalfilterinputfile"}]  \setuplayout[textwidth=6in] % matches line-width below\definefontfeature[main][protrusion=quality, expansion=quality]\definefontfamily[mainface][rm][Adobe Jenson Pro][features=main]\setupbodyfont[mainface,13pt]\setupalign[hz,hanging] \starttext \input zapf \startlilypond \layout{ indent=0\mm ragged-right = ##f}\paper {myStaffSize = #20 #(define fonts (make-pango-font-tree "Adobe Jenson Pro" "Myriad Pro" "Myriad Pro"(/ myStaffSize 20)))line-width=6\in oddFooterMarkup=##f oddHeaderMarkup=##f bookTitleMarkup = ##f scoreTitleMarkup = ##f }melody = \relative c'' { \clef treble \key c \major \time 4/4  a b c d}

Things that have not been implemented yet include:* set the text font (default should be ConTeXtupper = \relative c's bodyfont instead of LilyPond's){ \clef treble \key c \major* make lilypond call back on ConTeXt for included TeX (cf. [http: \time 2/4  a4 b c d} lower = \relative c { \clef bass \key c \major \time 2/lsr.dsi.unimi.it/LSR/Item?id4  a2 c} \score { << \new Voice = "mel" { \autoBeamOff \melody } \new Lyrics \lyricsto mel \text \new PianoStaff << \new Staff = "upper" \upper \new Staff =107])"lower" \lower >> >> \layout { \context { \Staff \RemoveEmptyStaves } }}* get information from lilypond about the baseline, for run-in music fragments* tell lilypond how much space is left on the first page\stoplilypond* check and probably work on proper multi-page music\input tufte \stoptext</texcode>

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 == Too many open files everywhere.)==

To remember: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.* see [httpAsk your shell about the open files maximum and set it higher://lilypond.org/doc/v2.7/Documentation/out-www/ LilyPond Docs]!* How do we handle version/syntax changes of LilyPond?

$ ulimit -n 256 $ ulimit -[[User:Hraban|Hraban]] 2005S -08-20, lots of changes by [[User:ChristopherCreutzig|Christopher Creutzig]] 2005-09-21n 2048

== Workarounds Deprecation ==

Calling lilypond from command line in Windows fails. The old LilyPond module (Seems like a bug in t-lilypond) doesn't work any more with recent versions of ConTeXt, therefore we removed its documentation here.)