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#ifndef UDO_MELSEQUENCING
#define UDO_MELSEQUENCING ##
/*
Melodic pattern sequencer base
Legacy, without microtonal option
This file is part of the SONICS UDO collection by Richard Knight 2021
License: GPL-2.0-or-later
http://1bpm.net
*/
#include "__config__.udo" ; using fftsize for tuning
#include "chords.udo" ; chord data
#include "sequencing.udo" ; sequencer base
#include "interop.udo" ; for updating host with outvalue
#include "wavetables.udo" ; for tuning
#include "json.udo" ; used to update host
; if these are set, then don't launch the manager automatically. sequencing_melodic_persistence will load accordingly
#ifdef MEL_INITPATH
#define MEL_HASINIT ##
#end
#ifdef MEL_INITDB
#define MEL_HASINIT ##
#end
;-------------------------internal-globals--------------------------------------------------------------------------
gimel_number init 12 ; number of melodic sections available
gimel_state ftgen 0, 0, -4, -7, 0 ; state: current section, next section, current_step (gimel_number)
gimel_chords ftgen 0, 0, -gimel_number, -7, 0 ; chord indexes from melodic.udo for each section
gimel_notes ftgen 0, 0, -gimel_number, -7, 0 ; midi note numbers for each section
gimel_lengths ftgen 0, 0, -gimel_number, -7, 0 ; lengths in beats for each section
gimel_action1 ftgen 0, 0, -gimel_number, -7, 0 ; follow action 1 for each section
gimel_action2 ftgen 0, 0, -gimel_number, -7, 0 ; follow action 2 for each section
gimel_actionthreshold ftgen 0, 0, -gimel_number, -7, 0 ; follow action threshold - below 0.5 is action1, above is action2
gimel_active ftgen 0, 0, -gimel_number, -7, 0 ; whether each section is active or to be ignored
gimel_importance ftgen 0, 0, -gimel_number, -7, 0 ; arbitrary section importance , 0 to 1
gimel_mod1 ftgen 0, 0, -gimel_number, -7, 0 ; arbitrary modulation 1, 0 to 1
gimel_mod2 ftgen 0, 0, -gimel_number, -7, 0 ; arbitrary modulation 2, 0 to 1
gimel_mod3 ftgen 0, 0, -gimel_number, -7, 0 ; arbitrary modulation 3, 0 to 1
gimel_mod4 ftgen 0, 0, -gimel_number, -7, 0 ; arbitrary modulation 4, 0 to 1
gimel_centadd ftgen 0, 0, -gimel_number, -7, 0 ; microtonal midi note additions (0 = no change; 1 = add one semitone; 0.01 = add one cent)
gimel_future ftgen 0, 0, -8, -7, 0 ; future sections: 8 in the future
gimel_current_notes ftgen 0, 0, -13, -7, 0 ; current notes: index 0 is the length
gimel_next_notes ftgen 0, 0, -13, -7, 0 ; next notes: index 0 is the length
gimel_temp_random ftgen 0, 0, -gimel_number, -7, 0 ; temp storage for pattern randomisation
gkmel_section_change init 0 ; section change trigger
gkmel_section_change_due init 0 ; how many beats until next section change
gkmel_futures_refresh_trig init 0 ; trigger to set if futures are to be recalculated
; user modifiable variables
gkmel_pause init 0 ; pause progression changes
gkmel_advance_trig init 0 ; manual progression advance trigger
; names and references for persistence and introspection: essentially the tables to be saved
gSmel_names[] fillarray "chords", "notes", "lengths", "action1", "action2",\
"actionthreshold", "active", "importance", "mod1", "mod2", "mod3", "mod4"
gimel_fns[] fillarray gimel_chords, gimel_notes, gimel_lengths, gimel_action1, gimel_action2,\
gimel_actionthreshold, gimel_active, gimel_importance, gimel_mod1, gimel_mod2, gimel_mod3, gimel_mod4
;-----------------------------opcodes-------------------------------------------------------------------------------
/*
Refresh the actions list: static actions and pattern references
*/
Smel_baseactions[] fillarray "Same", "Next", "Previous", "Random"
gSmel_actions[] init lenarray(Smel_baseactions) + gimel_number
index = 0
while (index < lenarray(gSmel_actions)) do
if (index < 4) then
gSmel_actions[index] = Smel_baseactions[index]
else
gSmel_actions[index] = sprintf("Section %d", index - 3)
endif
index += 1
od
/*
; actions: static actions and pattern references filled by _mel_refreshactions
;gSmel_actions[] init 1
opcode _mel_refreshactions, 0, 0
endop
_mel_refreshactions() ; initialise
*/
instr _mel_debug_printstate
index = 0
Sjson = json_init()
Sjson = json_appendtable(Sjson, "future", gimel_future)
while (index < lenarray(gimel_fns)) do
Sjson = json_appendtable(Sjson, gSmel_names[index], gimel_fns[index])
index += 1
od
prints Sjson
prints "\n\n"
endin
/*
Send JSON formatted information on current setup to API host
*/
instr mel_updatehost ; use p4 for channel?
Sjson = json_init()
Sjson = json_appendvalue(Sjson, "sections", gimel_number)
Sjson = json_appendarray(Sjson, "chordnames", gSchords)
Sjson = json_appendarray(Sjson, "actiontypes", gSmel_actions)
SjsonFns = json_init()
index = 0
while (index < lenarray(gimel_fns)) do
SjsonFns = json_appendvalue(SjsonFns, gSmel_names[index], gimel_fns[index])
index += 1
od
Sjson = json_appendobject(Sjson, "ftables", SjsonFns)
io_sendstring("mel_state", Sjson)
turnoff
endin
/*
; new verison using plugin opcode
instr mel_updatehost ; use p4 for channel?
iJson jsoninit
jsoninsertval iJson, "sections", gimel_number
jsoninsertval iJson, "chordnames", gSchords
jsoninsertval iJson, "actiontypes", gSmel_actions
iJsonFns jsoninit
jsoninsertval iJsonFns, gSmel_names, gimel_fns
jsoninsert iJson, "ftables", iJsonFns
io_sendstring("mel_state", jsondumps(iJson, 1))
endin
*/
/*
Get modulation parameters for current section
imod1, imod2, imod3, imod4 mel_currentmod
imod1 modulation parameter 1
imod2 modulation parameter 2
imod3 modulation parameter 3
imod4 modulation parameter 4
*/
opcode mel_currentmod, iiii, 0
icur = table:i(0, gimel_state)
xout table:i(icur, gimel_mod1), table:i(icur, gimel_mod2), table:i(icur, gimel_mod3), table:i(icur, gimel_mod4)
endop
/*
Get modulation parameters for current section
kmod1, kmod2, kmod3, kmod4 mel_currentmod
kmod1 modulation parameter 1
kmod2 modulation parameter 2
kmod3 modulation parameter 3
kmod4 modulation parameter 4
*/
opcode mel_currentmod, kkkk, 0
kcur = table:k(0, gimel_state)
xout table:k(kcur, gimel_mod1), table:k(kcur, gimel_mod2), table:k(kcur, gimel_mod3), table:k(kcur, gimel_mod4)
endop
/*
Get a random midi note from the current section chord
inote mel_randomnote
inote random note from current chord
*/
opcode mel_randomnote, i, 0
ilen = table:i(0, gimel_current_notes)
index = round(random(1, ilen-1))
xout table:i(index, gimel_current_notes)
endop
/*
Get a random midi note from the current section chord
knote mel_randomnote
knote random note from current chord
*/
opcode mel_randomnote, k, 0
klen = table:k(0, gimel_current_notes)
kindex = round:k(random:k(1, klen-1))
xout table:k(kindex, gimel_current_notes)
endop
/*
Get the current section at k-rate
ksection _mel_currentsectionget
ksection current section
*/
opcode _mel_currentsectionget, k, 0
xout table:k(0, gimel_state)
endop
/*
Get the next section at k-rate
ksection _mel_nextsectionget
ksection next section
*/
opcode _mel_nextsectionget, k, 0
xout table:k(0, gimel_future)
endop
/*
Set the current section at k-rate
_mel_currentsectionset ksection
ksection current section to set
*/
opcode _mel_currentsectionset, 0, k
ksection xin
tablew ksection, 0, gimel_state
endop
/*
Get the current section at init time
isection _mel_currentsectionget
usection current section
*/
opcode _mel_currentsectionget, i, 0
xout table:i(0, gimel_state)
endop
/*
Get the length of the current section in seconds
iseconds mel_length
iseconds length in seconds
*/
opcode mel_length, i, 0
xout table:i(_mel_currentsectionget(), gimel_lengths) * i(gkseq_beattime)
endop
/*
Get the length of the current section in seconds
kseconds mel_length
kseconds length in seconds
*/
opcode mel_length, k, 0
xout table:k(_mel_currentsectionget(), gimel_lengths) * gkseq_beattime
endop
/*
Get the current MIDI note numbers as an array
inotes[] mel_currentnotes
inotes[] the note numbers
*/
opcode mel_currentnotes, i[], 0
ilen = table:i(0, gimel_current_notes)
iout[] init ilen
index = 0
while (index < ilen) do
iout[index] = table:i(index+1, gimel_current_notes)
index += 1
od
xout iout
endop
/*
Call Sinstrument when ktrig is fired, for each note (passed as p4) and the current section length accordingly
mel_eachnote Sinstrument, ktrig[, klength = mel_length:k()]
Sinstrument the instrument name to call
ktrig trigger to active call
klength duration of instrument to call, defaulting to mel_length:k()
*/
opcode mel_eachnote, 0, SkJ
Sinstrument, ktrig, klength xin
if (ktrig == 1) then
kdur = (klength == -1 ) ? mel_length() : klength
kindex = 0
while (kindex < table:k(0, gimel_current_notes)) do
schedulek Sinstrument, 0, kdur, table:k(kindex + 1, gimel_current_notes)
kindex += 1
od
endif
endop
/*
Get the most important entry from futures table
kbestindex, kimportance, kbeats mel_future_mostimportant
kbestindex index in gimel_future
kimportance the importance measure
kbeats number of beats until the event occurs
*/
opcode mel_future_mostimportant, kkk, 0
kindex = 0
kimportance = -9999
kbestindex = 0
kbeats = table:k(table:k(0, gimel_state), gimel_lengths) ; current duration base
while (kindex < ftlen(gimel_future)) do
ksection = table:k(kindex, gimel_future)
kimportancetemp = table:k(ksection, gimel_importance)
if (kimportancetemp > kimportance) then
kimportance = kimportancetemp
kbestindex = kindex
endif
kindex += 1
od
kindex = 0
while (kindex < kbestindex) do
kbeats += table:k(table:k(kindex, gimel_future), gimel_lengths)
kindex += 1
od
xout kbestindex, kimportance, kbeats ; * gkseq_beattime
endop
/*
Get the most important entry from futures table
ibestindex, iimportance, ibeats mel_future_mostimportant
ibestindex index in gimel_future
importance the importance measure
ibeats number of beats until the event occurs
*/
opcode mel_future_mostimportant, iii, 0
index = 0
importance = -9999
ibestindex = 0
ibeats = table:i(table:i(0, gimel_state), gimel_lengths) ; current duration base
while (index < ftlen(gimel_future)) do
isection = table:i(index, gimel_future)
importancetemp = table:i(isection, gimel_importance)
if (importancetemp > importance) then
importance = importancetemp
ibestindex = index
endif
index += 1
od
index = 0
while (index < ibestindex) do
ibeats += table:i(table:i(index, gimel_future), gimel_lengths)
index += 1
od
xout ibestindex, importance, ibeats ; * i(gkseq_beattime)
endop
/*
Calculate the next section from a given section
knext _mel_calculatenext kcurrent
knext the calculated next section index
kcurrent the section index to base the calculation upon
*/
opcode _mel_calculatenext, k, k
kthissection xin
knextsection = -1
if (random:k(0, 1) <= table:k(kthissection, gimel_actionthreshold)) then
knextaction = table:k(kthissection, gimel_action2)
else
knextaction = table:k(kthissection, gimel_action1)
endif
; if current is not active, go to next ?
kcurrentactive = table:k(kthissection, gimel_active)
if (kcurrentactive == 0 && knextaction == 0) then
knextaction = 1
endif
; same
if (knextaction == 0) then
knextsection = kthissection
; next or previous
elseif (knextaction >= 1 && knextaction <= 3) then ; specified action
kcount = 0
kactive = 0
knextsection = kthissection
while (kactive == 0 && kcount < gimel_number) do ; loop until active section found or all sections checked
if (knextaction == 1) then ; next
if (knextsection + 1 > gimel_number - 1) then
knextsection = 0
else
knextsection += 1
endif
elseif (knextaction == 2) then ; previous
if (knextsection -1 < 0) then
knextsection = gimel_number - 1
else
knextsection -= 1
endif
endif
kactive = table:k(knextsection, gimel_active)
kcount += 1
od
; random
elseif (knextaction == 3) then
kindex = 0
krandmax = 0
while (kindex < gimel_number) do
if (table:k(kindex, gimel_active) == 1) then
tablew kindex, krandmax, gimel_temp_random
krandmax += 1
endif
kindex += 1
od
knextsection = table:k(round(random(0, krandmax - 1)), gimel_temp_random)
; specific section
elseif (knextaction >= 4) then ; specific active pattern
if (table:k(knextaction - 4, gimel_active) == 1) then
knextsection = knextaction - 4
else
knextsection = kthissection
endif
endif
xout knextsection
endop
/*
Set gimel_next_notes from the first entry in the futures table
*/
opcode _mel_setnextnotes, 0, 0
knext = table:k(0, gimel_future)
chordmidibyindextof gimel_next_notes, table:k(knext, gimel_chords), table:k(knext, gimel_notes)
endop
/*
Pop the next future entry from the futures table, move all future entries down one
and add a new calculated entry accordingly
kcurrent _mel_future_pop
kcurrent the current section to be used now
*/
opcode _mel_future_pop, k, 0
imax = ftlen(gimel_future)
kcurrent = table:k(0, gimel_future)
kindex = 0
while (kindex < imax - 1) do
tablew table:k(kindex + 1, gimel_future), kindex, gimel_future
kindex += 1
od
; write new last entry
tablew _mel_calculatenext(table:k(kindex, gimel_future)), imax - 1, gimel_future
_mel_setnextnotes()
xout kcurrent
endop
/*
Recalculate the futures table (in the event of parameters being changed at runtime etc)
*/
opcode _mel_futures_refresh, 0, O
kindexStart xin ; usually 0, can be a start index (ie 1 leaves the first entry in place)
kindex = kindexStart
imax = ftlen(gimel_future)
; TODO do first, etc
while (kindex < imax) do
if (kindex == 0) then
kcurrent = table:k(0, gimel_state) ; 0 ; get current, rather than 0...
else
kcurrent = table:k(kindex - 1, gimel_future)
endif
tablew _mel_calculatenext(kcurrent), kindex, gimel_future
kindex += 1
od
_mel_setnextnotes()
endop
/*
Set next section, for host control
p4 section number to set as next
*/
instr mel_setnextsection
isection = p4
if (table:i(isection, gimel_active) == 1) then
tablew isection, 0, gimel_future
gkmel_futures_refresh_trig = 2
endif
turnoff
endin
/*
Refresh the futures table, for host control
*/
instr mel_futures_refresh
gkmel_futures_refresh_trig = 1
turnoff
endin
/*
Randomise all section parameters
*/
opcode _mel_randomise, 0, 0
index = 0
iactives[] init 4 + gimel_lengths
iactivenum = 4
while (index < gimel_number) do
tablew round(random(0, lenarray(gSchords) - 1)), index, gimel_chords
tablew round(random(4, 8)), index, gimel_lengths
tablew round(random(48, 70)), index, gimel_notes
tablew random(0, 1), index, gimel_actionthreshold
tablew random(0, 1), index, gimel_importance
tablew random(0, 1), index, gimel_mod1
tablew random(0, 1), index, gimel_mod2
tablew random(0, 1), index, gimel_mod3
tablew random(0, 1), index, gimel_mod4
iactive = round(random(0, 1))
if (iactive == 1) then
iactives[iactivenum-1] = iactive
iactivenum += 1
endif
tablew iactive, index, gimel_active
index += 1
od
; set next action to only active sections
index = 0
while (index < gimel_number) do
iaction1 = iactives[round(random(0, iactivenum))]
iaction2 = iactives[round(random(0, iactivenum))]
tablew iaction1, index, gimel_action1
tablew iaction2, index, gimel_action2
index += 1
od
endop
/*
Randomise all section parameters and update the host
*/
instr mel_randomise
_mel_randomise()
gkmel_futures_refresh_trig = 1
event_i "i", "mel_updatehost", 0, 1
turnoff
endin
/*
Pause progression, for host control
*/
instr mel_pause
gkmel_pause = p4
turnoff
endin
/*
Advance progression, for host control
*/
instr mel_advance
gkmel_advance_trig = 1
turnoff
endin
/*
Advance progression if paused, for host control
*/
instr mel_advanceifpaused
if (gkmel_pause == 1) then
gkmel_advance_trig = 1
endif
turnoff
endin
opcode mel_nextchangelength, k, 0
kcurrent = _mel_currentsectionget()
klength = table:k(kcurrent, gimel_lengths)
imaxfutures = ftlen(gimel_future)
kindex = 0
while (kindex < imaxfutures) do
ksection = table:k(kindex, gimel_future)
if (ksection != kcurrent) kgoto complete
klength += table:k(ksection, gimel_lengths)
kindex += 1
od
complete:
xout klength
endop
/*
Initialise the sequencer sections; monitor for gkseq_beat triggers and change sections accordingly
*/
instr _mel_manager
#ifndef MEL_HASINIT
_mel_randomise()
#end
ksectionlength init 0
gkmel_futures_refresh_trig init 1
if (gkmel_futures_refresh_trig != 0) then
_mel_futures_refresh(gkmel_futures_refresh_trig - 1) ; if gkmel_futures_refresh_trig is 2, then omit first, otherwise recalculate all
gkmel_futures_refresh_trig = 0
ksectionlength = mel_nextchangelength()
endif
kstep init 0
gkmel_section_change = 0
kmanualadvance = 0
if (gkmel_advance_trig == 1) then
kmanualadvance = 1
gkmel_advance_trig = 0
endif
if ((gkseq_beat == 1 && gkmel_pause == 0) || kmanualadvance == 1) then
if (kstep == 0 || kmanualadvance == 1) then
kcurrent = _mel_currentsectionget()
tablecopy gimel_current_notes, gimel_next_notes
knew = _mel_future_pop()
_mel_currentsectionset(knew)
; only send if actually changed
if (kcurrent != knew) then
io_send("mel_current", knew) ; send current (from next)
gkmel_section_change = 1
ksectionlength = mel_nextchangelength()
endif
endif
gkmel_section_change_due = ksectionlength - kstep
if (kstep < ksectionlength - 1) then ; current step < current length
kstep += 1
else
kstep = 0
endif
endif ; end each beat
endin
#ifndef MEL_HASINIT
alwayson "_mel_manager"
#end
/*
Extend the current notes and convert to frequency, multiplying by powers of two to be used in mel_tune
ifreqs[] _mel_tune_noteprepare inotes[], imult
ifreqs[] resulting frequencies
inotes[] input midi note numbers
imult number of times to multiply note contents
*/
opcode _mel_tune_noteprepare, i[], i[]i
iarr[], imult xin
inew[] init lenarray(iarr) * imult
indexnew = 0
index = 0
while (index < lenarray(iarr)) do
ifreq = cpsmidinn(iarr[index])
index2 = 0
while (index2 < imult) do
if (index2 > 0) then
inew[indexnew] = ifreq * (2* (index2+1))
else
inew[indexnew] = ifreq
endif
index2 += 1
indexnew += 1
od
index += 1
od
xout inew
endop
/*
Create a chord with the specified frequencies
aout _mel_tune_chord ifreqs[] [, ifn, index]
aout resulting chord
ifreqs[] frequencies to play
ifn wavetable to play with, default = gifnSine
index internal index usage for recursion
*/
opcode _mel_tune_chord, a, i[]oo
ifreqs[], ifn, index xin
ifn = (ifn == 0) ? gifnSine : ifn
aout = oscil(0.1, ifreqs[index], ifn)
if (index < lenarray(ifreqs) - 1) then
aout += _mel_tune_chord(ifreqs, ifn, index + 1)
endif
xout aout
endop
/*
Stereo tuning to current melodic sequencer notes
aoutL, aoutR mel_tune ainL, ainR, ifn, imult [, ifftrate, ifftdiv]
aoutL, aoutR output audio
ainL, ainR input audio
ifn wavetable to use
imult multiples of harmonics to generate in tuning
ifftrate fft size, defaults to config default
ifftdiv fft window division factor (eg 4, 8, 16), defaults to config default
*/
opcode mel_tune, aa, aaiioo
aL, aR, ifn, imult, ifftrate, ifftdiv xin
ifftrate = (ifftrate == 0) ? giFFTsize : ifftrate
ifftdiv = (ifftdiv == 0) ? giFFTwinFactor : ifftdiv
ifreqs[] _mel_tune_noteprepare mel_currentnotes(), imult
fmods pvsanal _mel_tune_chord(ifreqs, ifn), ifftrate, ifftrate/ifftdiv, ifftrate, 1
fL1 pvsanal aL, ifftrate, ifftrate/ifftdiv, ifftrate, 1
fR1 pvsanal aR, ifftrate, ifftrate/ifftdiv, ifftrate, 1
fL2 pvsmorph fL1, fmods, 0, 1
fR2 pvsmorph fR1, fmods, 0, 1
aL1 pvsynth fL2
aR1 pvsynth fR2
idel = (ifftrate+2)/sr
aL1 balance aL1, delay(aL, idel)
aR1 balance aR1, delay(aR, idel)
xout aL1, aR1
endop
/*
Experimental tonal balance of two signals
aoutput balancetonal ain, aincomparator
aoutput balanced signal
ain signal to apply changes to
aincomparator signal to 'extract' frequency contour from
*/
opcode balancetonal, a, aa
ain, ainc xin
aouts[] init 16
aouts[0] balance butterbp(ain, 100, 200), butterbp(ainc, 100, 200) ; 0 - 200
aouts[1] balance butterbp(ain, 400, 400), butterbp(ainc, 400, 400) ; 200 - 600
aouts[2] balance butterbp(ain, 800, 400), butterbp(ainc, 800, 400) ; 600 - 1000
aouts[3] balance butterbp(ain, 1200, 400), butterbp(ainc, 1200, 400) ; 1000 - 1400
aouts[4] balance butterbp(ain, 1700, 600), butterbp(ainc, 1700, 600) ; 1400 - 2000
aouts[5] balance butterbp(ain, 2400, 800), butterbp(ainc, 2400, 800) ; 2000 - 2800
aouts[6] balance butterbp(ain, 3200, 800), butterbp(ainc, 3200, 800) ; 2800 - 3600
aouts[7] balance butterbp(ain, 4200, 1200), butterbp(ainc, 4200, 1200) ; 3600 - 4800
aouts[8] balance butterbp(ain, 5400, 1200), butterbp(ainc, 5400, 1200) ; 4800 - 6000
aouts[9] balance butterbp(ain, 7000, 2000), butterbp(ainc, 7000, 2000) ; 6000 - 8000
aouts[10] balance butterbp(ain, 9000, 2000), butterbp(ainc, 9000, 2000) ; 8000 - 10000
aouts[11] balance butterbp(ain, 11000, 2000), butterbp(ainc, 11000, 2000) ; 10000 - 12000
aouts[12] balance butterbp(ain, 14000, 4000), butterbp(ainc, 14000, 4000) ; 12000 - 16000
aouts[13] balance butterbp(ain, 18000, 4000), butterbp(ainc, 18000, 4000) ; 16000 - 20000
aouts[14] balance butterhp(ain, 20000), butterhp(ainc, 20000)
aout sumarray aouts
xout aout
endop
#end
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