#ifndef UDO_SCSS_BASE
#define UDO_SCSS_BASE ##
/*
	SONICS Category Sequencer System

	Designed for use with an API host to/from which callbacks and JSON states can be exchanged

	Requires JSON opcodes
		https://git.1bpm.net/csound-json

	This file is part of the SONICS UDO collection by Richard Knight 2022
		License: GPL-2.0-or-later
		http://1bpm.net
*/


#include "sequencing.udo"
#include "bussing.udo"
#include "interop.udo"
#include "sequencing_table.udo"
#include "sequencing_melodic.udo"
;#include "sequencing_melodic_persistence.udo"
#include "scss/seqtable.udo"


; session name for persistence
#ifndef SCSS_NAME
#define SCSS_NAME #default#
#end


; category types: trigger are pattern sequenced, continuous are always on but switchable, effects are always on
gSscss_catTypes[] fillarray "trigger", "continuous", "oneoff", "effects"

; selected instrument indexes by category; hardcoded max of 32 categories here...
imaxcategories = 32
giscss_instrState ftgen 0, 0, -imaxcategories, -2, 0
giscss_catEnabled ftgen 0, 0, -imaxcategories, -2, 0
giscss_catType ftgen 0, 0, -imaxcategories, -2, 0

; categories and effects for bus tracking / amp channel names
gSscss_categories[] init 1
gSscss_effects[] init 1

; callback ID divisor for callback-tracked instrument numbers
gicbid_idiv = 10000000



#ifdef SCSS_MIDI
#define MIDI_NOTE_HANDLER_INSTRUMENT #_scss_midihandler#
#include "midi.udo"

giscss_midicategories[] init 16

instr _scss_midihandler
	ichannel = p4
	inote = p5
	ivelocity = p6
	icategoryid = giscss_midicategories[ichannel]
	instrnum table icategoryid, giscss_instrState
	instrnum += (99 + icategoryid + inote) / gicbid_idiv
	schedule(instrnum, 0, -1)
	kreleasing init 0
	if (release:k() == 1 && kreleasing == 0) then
		turnoff2 instrnum, 4, 1
		kreleasing = 1
	endif
endin

instr scss_setmidicategory
	ichannel = p4
	icategoryid = p5
	giscss_midicategories[ichannel] = icategoryid
	turnoff
endin

#end


; default JSON object; categories will be filled by registering categories and instruments accordingly; default global parameters are defined here
giscss_stateJson = jsonloads({{
	{
		"categories": [],
		"parameters": [
			{"name": "bpm", "description": "BPM", "default": 120, "max": 240, "min": 30}
		]
	}
}})

#include "scss/persistence.udo"

/*
	Get category ID for given category name, creating in giscss_stateJson if it does not exist

	icategoryid	_scss_category_getorcreate Scategory, Sdescription [,itype = 0]

	icategoryid		the ID
	Scategory		category name to get or create
	Sdescription	description to add if creating; pass "" if not required
	itype			type ID. Type is set to "effects" if category name is "effects"
						0 	trigger
						1	continuous
	
*/
opcode _scss_category_getorcreate, i, SSo
	Scategory, Sdescription, itype xin
	iJcategories = jsonget(giscss_stateJson, "categories")
	isize = jsonsize(iJcategories)
	index = 0
	while (index < isize) do
		iJcategory = jsonget(iJcategories, index)
		SexistingCategory = jsongetval(iJcategory, "name")
		if (strcmp(SexistingCategory, Scategory) == 0) then
			goto complete
		endif
		jsondestroy(iJcategory)
		index += 1
	od

	if (strcmp(Scategory, "effects") == 0) then
		itype = 3
	endif

	Stype = gSscss_catTypes[itype]

	; create
	if (strcmp(Sdescription, "") == 0) then
		iJsonNew = jsonloads(sprintf("{\"name\": \"%s\", \"type\": \"%s\", \"type_id\": %d, \"items\": []}", Scategory, Stype, itype))
	else
		iJsonNew = jsonloads(sprintf("{\"name\": \"%s\", \"type\": \"%s\", \"type_id\": %d, \"description\": \"%s\", \"items\": []}", Scategory, Stype, itype, Sdescription))
	endif

	; workaround for not being able to append with ptr
	iJsonSz = jsonptr(giscss_stateJson, "/categories")
	index = jsonsize(iJsonSz)
	jsondestroy(iJsonSz)

	jsonptradd(giscss_stateJson, sprintf("/categories/%d", index), iJsonNew)
	jsondestroy(iJsonNew)
complete:
	jsondestroy(iJcategories)
	xout index
endop


/*
	Get category ID for given category name, creating in giscss_stateJson if it does not exist

	icategoryid	scss_categoryid Scategory

	icategoryid		the ID
	Scategory		category name to get or create
*/
opcode scss_categoryid, i, S
	Scategory xin
	icategoryid = _scss_category_getorcreate(Scategory, "")
	xout icategoryid
endop



/*
	Register an instrument name to a category by category ID

	scss_registerinstr icategoryid, SinstrumentJson
	scss_registerinstr Scategory, SinstrumentJson

	icategoryid		category ID to register to
	Scategory		category name to register to
	SinstrumentJson	definition of instrument
*/
opcode scss_registerinstr, 0, iS
	icategoryid, Sjson xin
	iJson = jsonloads(Sjson)

	; workaround for not being able to append with ptr
	iJsonSz = jsonptr(giscss_stateJson, sprintf("/categories/%d/items", icategoryid))
	index = jsonsize(iJsonSz)
	jsondestroy(iJsonSz)

	jsonptradd(giscss_stateJson, sprintf("/categories/%d/items/%d", icategoryid, index), iJson)
	jsondestroy(iJson)
endop

; override for named category
opcode scss_registerinstr, 0, SS
	Scategory, Sjson xin
	scss_registerinstr(scss_categoryid(Scategory), Sjson)
endop


/*
	Register a category and set the default instrument name. An existing category could be specified with no harm

	icategoryid scss_registercategory Scategory, Sdescription, SdefaultInstrument
	icategoryid scss_registercategory Scategory, SdefaultInstrument

	icategoryid			the category ID
	Scategory			category name
	Sdescription		category description
	SdefaultInstrument	default instrument to set in giscss_instrState
*/
opcode scss_registercategory, i, SSSo
	Scategory, Sdescription, SdefaultInstrument, itypeid xin
	icategoryid = _scss_category_getorcreate(Scategory, Sdescription, itypeid)

	; set default instrument in state table
	tablew nstrnum(SdefaultInstrument), icategoryid, giscss_instrState

	xout icategoryid
endop

; override for when no description is provided
opcode scss_registercategory, i, SS
	Scategory, SdefaultInstrument xin
	xout scss_registercategory(Scategory, "", SdefaultInstrument)
endop


/*
	Register a category with continous type and set the default instrument name. An existing category could be specified with no harm
*/
opcode scss_registercategory_continuous, i, SSS
	Scategory, Sdescription, SdefaultInstrument xin
	xout scss_registercategory(Scategory, Sdescription, SdefaultInstrument, 1)
endop

; override for when no description is provided
opcode scss_registercategory_continuous, i, SS
	Scategory, SdefaultInstrument xin
	xout scss_registercategory(Scategory, "", SdefaultInstrument, 1)
endop


/*
	Sequence the trigger category instruments according to status in table giscss_catEnabled and the primary sequence in table giscss_stfn_trig
	Instruments receive p4 as category ID (to allow for independent category specific opcode calls) and p5 as time index 

	_scss_st_catseq icategoryid

	icategoryid		category ID
*/
opcode _scss_st_catseq, 0, i
	icategoryid xin
	Scategory = gSscss_categories[icategoryid]
	;ifn [, kreset=0, kdivisions=4, kchanceon=1, kchanceoff=1, klength=ftlen(ifn), kswing=gkseq_swing]
	kreset = chnget:k(sprintf("%s_seq_reset", Scategory))
	kdivisions = chnget:k(sprintf("%s_seq_divisions", Scategory))
	kchanceon = chnget:k(sprintf("%s_seq_chanceon", Scategory))
	kchanceoff = chnget:k(sprintf("%s_seq_chanceoff", Scategory))
	;klength = chnget:k(sprintf("seq_lengthratio_%d", icategoryid)) * ftlen(giscss_stfn_trig[icategoryid][0])
	ktrig, kindex seq_table giscss_stfn_trig[icategoryid][0], kreset, kdivisions, kchanceon, kchanceoff

	if (ktrig == 1 && table:k(icategoryid, giscss_catEnabled) == 1) then
		kinstrnum table icategoryid, giscss_instrState
		kduration table kindex, giscss_stfn_dur[icategoryid][0]
		schedulek(kinstrnum, 0, kduration*gkseq_quartertime, icategoryid, kindex)
	endif
endop


/*
	React to changes in the giscss_catEnabled table and invoke or stop continuous category instruments accordingly

	_scss_st_catcontreactor icategoryid

	icategoryid		category ID
*/
opcode _scss_st_catcontreactor, 0, i
	icategoryid xin
	kenabled = table:k(icategoryid, giscss_catEnabled)
	klastinstrnum init table:i(icategoryid, giscss_instrState)
	kinstrnum = table:k(icategoryid, giscss_instrState)
	
	if (changed:k(kenabled) == 1 || changed:k(kinstrnum) == 1) then
		if (kenabled == 1) then
			turnoff2 klastinstrnum, 0, 1
			schedulek(kinstrnum, 0, 999999) ; not -1 in case of p3 linseg(r) usage
		else
			turnoff2 klastinstrnum, 0, 1
		endif
		klastinstrnum = kinstrnum
	endif
endop


/*
	Sequencing and instrument launch control
	Initialises all category sequencing for trigger and continuous type categories
	No parameters should be provided, the index parameter is for internal recursion
*/
opcode _scss_st_seq, 0, o
	index xin
	itypeid = table:i(index, giscss_catType)
	
	if (itypeid == 0) then ; is trigger type
		_scss_st_catseq(index)
	elseif (itypeid == 1) then ; is continuous type
		_scss_st_catcontreactor(index)
	endif
	; effects initialised by scss_boot

	if (index < lenarray(gSscss_categories) - 1) then
		_scss_st_seq(index + 1)
	endif
endop


/*
	Get an init time parameter specific to the instrument/effect

	ivalue scss_param Sname

	ivalue		parameter value
	Sname		parameter name, specific to the instrument/effect
*/
opcode scss_param, i, S
	Sname xin
	ivalue = chnget(sprintf("%s_%s", nstrstr(p1), Sname))
	xout ivalue
endop


/*
	Get a k-rate parameter specific to the instrument/effect

	kvalue scss_param Sname

	kvalue		parameter value
	Sname		parameter name, specific to the instrument/effect
*/
opcode scss_param, k, S
	Sname xin
	kvalue = chnget:k(sprintf("%s_%s", nstrstr(p1), Sname))
	xout kvalue
endop


opcode scss_catparam, i, S
	Sname xin
	xout chnget(sprintf("%s_%s", gSscss_categories[p4], Sname))
endop


opcode scss_catparam, k, S
	Sname xin
	xout chnget:k(sprintf("%s_%s", gSscss_categories[p4], Sname))
endop

/*
	Output to category bus; should be used by all SCSS category instruments in place of outs()
	Instruments are invoked with the category ID as p4, so this is utilised here if icategoryid is not supplied

	scss_catout aL, aR [, icategoryid]

	aL, aR			output of instrument
	icategoryid		category ID; taken as p4 if not supplied
*/
opcode scss_catout, 0, aaj
	aL, aR, icategoryid xin
	icategoryid = (icategoryid == -1) ? p4 : icategoryid
	bus_mix(sprintf("cat%d", icategoryid), aL, aR)
endop


/*
	Get input from effects input bus; should be used by all SCSS effects to obtain input

	aL, aR scss_fxin
	
	aL, aR		audio input to apply effect to
*/
opcode scss_fxin, aa, 0
	aL, aR bus_read nstrstr(p1)
	xout aL, aR
endop


/*
	Output to effects output bus; should be used by all SCSS effects in place of outs()

	scss_fxout aL, aR

	aL, aR 		output of effect
*/
opcode scss_fxout, 0, aa
	aL, aR xin
	bus_set(sprintf("%s_out", nstrstr(p1)), aL, aR)
endop


/*
	Set category instrument

	scss_setcategoryinstrument icategoryid, Sinstrument
	scss_setcategoryinstrument Scategory, Sinstrument
	scss_setcategoryinstrument icategoryid, instrnum
	scss_setcategoryinstrument Scategory, instrnum

	icategoryid		category ID
	Scategory		category name
	Sinstrument		instrument name (should be within the category, would work if not though so host must impose any restrictions required)
	instrnum		instrument number
*/
opcode scss_setcategoryinstrument, 0, ii
	icategoryid, instrnum xin
	tablew instrnum, icategoryid, giscss_instrState
endop

; override for named instrument, int category
opcode scss_setcategoryinstrument, 0, iS
	icategoryid, Sinstrument xin
	scss_setcategoryinstrument(icategoryid, nstrnum(Sinstrument))
endop

; override for named instrument, named category
opcode scss_setcategoryinstrument, 0, SS
	Scategory, Sinstrument xin
	scss_setcategoryinstrument(scss_categoryid(Scategory), nstrnum(Sinstrument))
endop

; override for named category, int instrument
opcode scss_setcategoryinstrument, 0, Si
	Scategory, instrument xin
	scss_setcategoryinstrument(scss_categoryid(Scategory), instrument)
endop



/*
	Toggle category enabled/disabled (inverse of current)

	scss_togglecategory icategoryid
	scss_togglecategory Scategory

	icategoryid		category ID
	Scategory		category name
*/
opcode scss_togglecategory, 0, i
	icategoryid xin
	tablew 1 - table:i(icategoryid, giscss_catEnabled), icategoryid, giscss_catEnabled
endop

; override for named category
opcode scss_togglecategory, 0, S
	Scategory xin
	scss_togglecategory(scss_categoryid(Scategory))
endop


/*
	Set category enabled or disabled

	scss_setcategoryenabled icategoryid, istate
	scss_setcategoryenabled Scategory, istate

	icategoryid		category ID
	Scategory		category name
	istate			0 = disabled, 1 = enabled
*/
opcode scss_setcategoryenabled, 0, ii
	icategoryid, istate xin
	tabw_i istate, icategoryid, giscss_catEnabled
endop

; override for named category
opcode scss_setcategoryenabled, 0, Si
	Scategory, istate xin
	scss_setcategoryenabled(scss_categoryid(Scategory), istate)
endop


; API evalCode not working right
instr scss_eval
	ires = evalstr(strget(p4))
	turnoff
endin

/*
	Pause or unpause the melodic progression

	p4	0 = unpaused, 1 = paused
*/
instr scss_mel_pause
	istate = p4
	gkmel_pause = istate
	turnoff
endin


/*
	Schedule a series of init time instructions
	When complete, the host is sent a callback

	p4	instructions string (any valid init time calls)
	p5	mode:
		-1	immediate
		0	next beat
		1	next bar
		2	next bar group
		3	next melodic section change
		4	next most important melodic section
	p6	queue ID (to allow for dynamic change instrument separation)
	p7	callback ID
*/
instr scss_schedule_change
	Sinstructions = p4
	imode = p5
	iqid = p6
	icbid = p7
	
	p1 += (icbid / gicbid_idiv)
	
	ktrig init 0

	; immediate
	if (imode == -1) then
		ktrig = 1

	; next beat
	elseif (imode == 0) then
		ktrig = gkseq_beat

	; next bar
	elseif (imode == 1) then
		ktrig = gkseq_bar_trig

	; next bar group
	elseif (imode == 2) then
		ktrig = gkseq_bargroup

	; next melodic section change
	elseif (imode == 3) then
		ktrig = gkmel_section_change

	; next most important melodic section
	elseif (imode == 4) then
		ibestindex, iimportance, ibeats mel_future_mostimportant
		kbeat init ibeats
		if (gkseq_beat == 1) then
			kbeat -= 1
		endif
		
		if (kbeat == 0) then
			ktrig = 1
		endif
	endif

	; when ready, execute the instructions and notify host
	if (ktrig == 1) then
		kres evalstr Sinstructions, ktrig
		if (iqid > -1) then
			schedulek("scss_callbackcomplete", 0, 1, icbid)
		endif
		turnoff
	endif
endin


; original with compilestr instead of evalstr
instr scss_schedule_change_original
	Sinstructions = p4
	imode = p5
	iqid = p6
	icbid = p7
	
	p1 += (icbid / gicbid_idiv)

	ires compilestr sprintf({{
		instr scss_change_%d
			%s
			turnoff
		endin
	}}, iqid, Sinstructions)
	
	ktrig init 0

	; immediate
	if (imode == -1) then
		ktrig = 1

	; next beat
	elseif (imode == 0) then
		ktrig = gkseq_beat

	; next bar
	elseif (imode == 1) then
		ktrig = gkseq_bar_trig

	; next bar group
	elseif (imode == 2) then
		ktrig = gkseq_bargroup

	; next melodic section change
	elseif (imode == 3) then
		ktrig = gkmel_section_change

	; next most important melodic section
	elseif (imode == 4) then
		ibestindex, iimportance, ibeats mel_future_mostimportant
		kbeat init ibeats
		if (gkseq_beat == 1) then
			kbeat -= 1
		endif
		
		if (kbeat == 0) then
			ktrig = 1
		endif
	endif

	; when ready, execute the instructions and notify host
	if (ktrig == 1) then
		schedulek(sprintf("scss_change_%d", iqid), 0, 1)
		if (iqid > -1) then
			schedulek("scss_callbackcomplete", 0, 1, icbid)
		endif
		turnoff
	endif
endin




/*
	Automate a parameter

	p4		callback ID
	p5		mode:
				0	segmented between start/end values
				1	read values from a specified table
	p6		report value back to host every p6 seconds. Channel is set as cbval appended with callback ID. If 0, value is not reported
	p7		channel name to automate
	p8		time mode:
				0	p3 is in absolute seconds
				1	p3 is in beats
				2	p3 is in bars
				3	p3 is in bargroups
				4	run until next most important melodic sequence
	p9		start value if segmented mode
	p10		end value if segmented mode
	p11		if segmented mode;
				0	linear segment
				1	exponential segment
	p12		table number if table read mode
	p13		loop automation (0 = no loop, 1 = loop)
	p14		if loop is specified, set ping pong loop  (0 = normal loop, 1 = ping pong loop)
*/
instr scss_automateparameter
	icbid = p4
	imode = p5 ; 0 = seg, 1 = table
	ireportvaluetime = p6
	SparameterChannel = p7
	itimemode = p8
	istart = p9
	iend = p10
	iexpon = p11
	ifn = p12
	iloop = p13
	ipingpong = p14

	; if the first iteration and callback ID has been specified, offset the instrument number to allow scss_cancelcallbackinstrument to be used
	if (icbid > -1 && iloop <= 1) then
		p1 += (icbid / gicbid_idiv)
		io_sendstring("callback", sprintf("{\"cbid\": %d, \"keep_callback\": true, \"status\": \"started\"}", icbid))
	endif

	; if first iteration, set the duration according to itimemode
	if (iloop <= 1) then
		if (itimemode == 1) then
			p3 *= i(gkseq_beattime)
		elseif (itimemode == 2) then
			p3 *= i(gkseq_beattime) * giseq_barlength
		elseif (itimemode == 3) then
			p3 *= i(gkseq_beattime) * giseq_barlength * giseq_bargrouplength
		elseif (itimemode == 4) then
			ibestindex, iimportance, ibeats mel_future_mostimportant
			p3 *= i(gkseq_beattime) * ibeats
		endif
	endif

	; iloop is incremented each loop, so if ipingpong is specified, use this to determine if reverse read should occur
	ireverse = (ipingpong == 1 && iloop != 0 && iloop % 2 == 0) ? 1 : 0

	; segmented mode
	if (imode == 0) then
		if (ireverse == 1) then
			istarttemp = istart
			istart = iend
			iend = istarttemp
		endif

		; exponentials cannot be 0
		if (iexpon == 1) then
			if (istart == 0) then
				istart = 0.0000001
			endif
			if (iend == 0) then
				iend = 0.0000001
			endif

			kvalue expseg istart, p3, iend
		else
			kvalue linseg istart, p3, iend
		endif

	; table read mode
	elseif (imode == 1) then
		if (ireverse == 1) then
			kindex line ftlen(ifn), p3, 0
		else
			kindex line 0, p3, ftlen(ifn)
		endif
		kvalue table kindex, ifn
	endif

	; set the actual channel value
	chnset kvalue, SparameterChannel

	; report back to host if specified
	if (ireportvaluetime > 0) then
		; send back to host for ui change
		kmetro metro 1/ireportvaluetime
		if (kmetro == 1) then
			outvalue sprintf("cbval%d", icbid), kvalue
		endif
	endif

	; loop or complete
	if (icbid > -1) then
		if (lastcycle:k() == 1) then
			if (iloop > 0) then
				schedulek(p1, 0, p3, icbid, imode, ireportvaluetime, SparameterChannel, itimemode, istart, iend, iexpon, ifn, iloop+1, ipingpong)
			else
				schedulek("scss_callbackcomplete", 0, 1, icbid)
			endif
		endif
	endif
endin


/*
	Send callback complete JSON to host
	(due to outvalue(S,S) firing at i-time as well as k when we just want k)
	
	p4	callback ID
*/
instr scss_callbackcomplete
	icbid = p4
	io_sendstring("callback", sprintf("{\"cbid\": %d, \"status\": \"complete\"}", icbid))
	turnoff
endin


/*
	Cancel a callback instrument (one initiated with (instrument number + (icbid / gicbid_idiv))

	p4	callback ID
	p4	instrument name
*/
instr scss_cancelcallbackinstrument
	icbid = p4
	Sinstrument = p5
	instrnum = nstrnum(Sinstrument) + (icbid / gicbid_idiv)
	turnoff2 instrnum, 4, 0
	io_sendstring("callback", sprintf("{\"cbid\": %d, \"status\": \"complete\", \"cancelled\": true}", icbid))
	turnoff
endin




/*
	Sum effects bus returns and include into one category bus for internal use
*/
opcode _scss_getsetfxbusses, 0, jo
	icategoryid, index xin
	if (icategoryid == -1 ) then
		icategoryid = scss_categoryid("effects")
	endif

	Seffect = gSscss_effects[index]
	aL, aR bus_read sprintf("%s_out", Seffect)
	kamp chnget sprintf("%s_amp", Seffect)
	aL *= kamp
	aR *= kamp
	bus_mix(sprintf("cat%d", icategoryid), aL, aR)

	if (index + 1 < lenarray(gSscss_effects)) then
		_scss_getsetfxbusses icategoryid, index + 1
	endif
endop


/*
	Get all category bus outputs, summed and with the relevant amplitude applied from the channel CATEGORYNAME_amp
	
	aL, aR scss_getcategorybusses

	aL, aR		left and right audio outputs
*/
opcode scss_getcategorybusses, aa, o
	index xin
	_scss_getsetfxbusses()
	aL, aR bus_read sprintf("cat%d", index)
	kamp chnget sprintf("%s_amp", gSscss_categories[index])
	aL *= kamp
	aR *= kamp
	if (index + 1 < lenarray(gSscss_categories)) then
		aLx, aRx scss_getcategorybusses index + 1
		aL += aLx
		aR += aRx
	endif
	xout aL, aR
endop



/*
	Set a trigger to 1 for one kcycle

	p4	channel name to set
*/
instr scss_trigger
	Schannel = p4
	chnset 1, Schannel
	chnset k(0), Schannel
	turnoff
endin


/*
	Boot SCSS:
		go through parameters and set defaults to channels accordingly
		set default parameters where appropriate
		set category bus amps to default
		set ampchannel in JSON
*/
instr scss_boot
	SonComplete = strget(p4)

	SdefaultTriggerParameters = {{[
		{"name": "seq_reset", "description": "Reset", "type": "trigger"},
		{"name": "seq_divisions", "description": "Divisions", "type": "int", "min": 1, "max": 8, "default": 4},
		{"name": "seq_chanceon", "description": "On chance", "min": 0, "max": 1, "default": 1},
		{"name": "seq_chanceoff", "description": "Off chance", "min": 0, "max": 1, "default": 1}%s
	]}}
	SdefaultParameters = {{
		{"name": "amp", "description": "Amplitude", "min": 0, "max": 1, "default": 1}
	}}

	idefaultcategoryamp = 1
	idefaultfxamp = 0.8
	iJson = jsonptr(giscss_stateJson, "/categories")

	icatnum = jsonsize(iJson)
	gSscss_categories[] init icatnum
	scss_st_boot(icatnum, 32, 4)
	
	; add effects default parameters; done to global for later defaults processing
	index = 0
	while (index < icatnum) do
		Scategory jsonptrval giscss_stateJson, sprintf("/categories/%d/name", index)
		if (strcmp(Scategory, "effects") == 0) then
			iJsonItems = jsonptr(giscss_stateJson, sprintf("/categories/%d/items", index))
			ijsize = jsonsize(iJsonItems)
			jsondestroy(iJsonItems)
			indexitem = 0
			while (indexitem < ijsize) do
				SparameterPointer = sprintf("/categories/%d/items/%d/parameters", index, indexitem)
				if (jsonptrhas(giscss_stateJson, SparameterPointer) == 1) then
					iJparameters = jsonptr(giscss_stateJson, SparameterPointer)
					indexparam = jsonsize(iJparameters)
					jsondestroy(iJparameters)
					iJdefaults = jsonloads(SdefaultParameters)
					jsonptradd(giscss_stateJson, sprintf("%s/%d", SparameterPointer, indexparam), iJdefaults)
				else
					iJdefaults = jsonloads(sprintf("[%s]", SdefaultParameters))
					jsonptradd(giscss_stateJson, SparameterPointer, iJdefaults)
				endif
				jsondestroy(iJdefaults)
				indexitem += 1
			od
			goto process_categories
		endif
		index += 1
	od

process_categories:
	; loop through instrument categories
	index = 0
	while (index < icatnum) do

		; all enabled to begin with
		tablew 1, index, giscss_catEnabled

		iJsonCategory = jsonptr(giscss_stateJson, sprintf("/categories/%d", index))
		Scategory jsongetval iJsonCategory, "name"
		iseffect = 1 - strcmp(Scategory, "effects")
		itypeid jsongetval iJsonCategory, "type_id"

		tablew itypeid, index, giscss_catType
		istriggered = (itypeid == 0) ? 1 : 0

		; set in global array for bus tracking
		gSscss_categories[index] = Scategory

		iJsonItems = jsonptr(iJsonCategory, "/items")
		iinstrnum = jsonsize(iJsonItems)

		; add category ID
		jsonptraddval giscss_stateJson, sprintf("/categories/%d/category_id", index), index

		if (iseffect == 1) then
			gSscss_effects[] init iinstrnum
		else

			if (istriggered == 1) then
				; add sequence tables
				iJsonSeqtables = jsoninit()
				jsoninsertval(iJsonSeqtables, "trigger", getrow(giscss_stfn_trig, index))
				jsoninsertval(iJsonSeqtables, "duration", getrow(giscss_stfn_dur, index))
				jsoninsertval(iJsonSeqtables, "parameter", getrow(giscss_stfn_params, index))
				jsonptradd giscss_stateJson, sprintf("/categories/%d/seqtables", index), iJsonSeqtables
				jsondestroy(iJsonSeqtables)
				iJsonInstrParams = jsonloads(sprintf(SdefaultTriggerParameters, sprintf(",%s", SdefaultParameters)))
			else
				iJsonInstrParams = jsonloads(sprintf("[%s]", SdefaultParameters))
			endif

			; add default control channels			
			iparamsize = jsonsize(iJsonInstrParams)
			indexparam = 0
			while (indexparam < iparamsize) do
				SparamName jsonptrval iJsonInstrParams, sprintf("/%d/name", indexparam)
				SdefaultPointer = sprintf("/%d/default", indexparam)

				; if default is specified
				if (jsonptrhas(iJsonInstrParams, SdefaultPointer) == 1) then
					chnset jsonptrval:i(iJsonInstrParams, SdefaultPointer), sprintf("%s_%s", Scategory, SparamName)
				endif

				indexparam += 1
			od
			jsonptradd giscss_stateJson, sprintf("/categories/%d/parameters", index), iJsonInstrParams
			jsondestroy(iJsonInstrParams)
		endif

		; loop through instrument items
		indexItem = 0
		while (indexItem < iinstrnum) do 
			iJsonItem = jsonptr(iJsonItems, sprintf("/%d", indexItem))
			Sinstrument = jsongetval(iJsonItem, "name")
		
			if (iseffect == 1) then
				gSscss_effects[indexItem] = Sinstrument
				SampChannel = sprintf("%s_amp", Sinstrument)
				chnset idefaultfxamp, SampChannel
				jsonptraddval giscss_stateJson, sprintf("/categories/%d/items/%d/ampchannel", index, indexItem), SampChannel
			endif

			; add instrument number
			jsonptraddval giscss_stateJson, sprintf("/categories/%d/items/%d/instrnum", index, indexItem), nstrnum(Sinstrument)

			SparameterPointer = "/parameters"
			if (jsonptrhas(iJsonItem, SparameterPointer) == 1) then
				iJsonParameters = jsonptr(iJsonItem, SparameterPointer)
				iparamsize = jsonsize(iJsonParameters)
				
				; loop through parameter keys
				indexparam = 0
				while (indexparam < iparamsize) do
					SparamName jsonptrval iJsonParameters, sprintf("/%d/name", indexparam)
					SdefaultPointer = sprintf("/%d/default", indexparam)

					; if default is specified
					if (jsonptrhas(iJsonParameters, SdefaultPointer) == 1) then
						chnset jsonptrval:i(iJsonParameters, SdefaultPointer), sprintf("%s_%s", Sinstrument, SparamName)
					endif
					indexparam += 1
				od
				jsondestroy(iJsonParameters)
			endif

			; if instrument is in effects category, schedule endless play
			if (iseffect == 1) then
				schedule Sinstrument, 0.1, -1
			endif
			
			jsondestroy(iJsonItem)
			indexItem += 1
		od
		jsondestroy(iJsonItems)
		jsondestroy(iJsonCategory)
		index += 1
	od
	jsondestroy(iJson)

	; global parameters
	SparameterPointer = "/parameters"
	if (jsonptrhas(giscss_stateJson, SparameterPointer) == 1) then
		iJsonParameters = jsonptr(giscss_stateJson, SparameterPointer)
		iparamsize = jsonsize(iJsonParameters)

		; loop through parameter keys
		indexparam = 0
		while (indexparam < iparamsize) do
			SparamName jsonptrval iJsonParameters, sprintf("/%d/name", indexparam)
			SdefaultPointer = sprintf("/%d/default", indexparam)

			; if default is specified
			if (jsonptrhas(iJsonParameters, SdefaultPointer) == 1) then
				chnset jsonptrval:i(iJsonParameters, SdefaultPointer), sprintf("scss_%s", SparamName)
			endif
			indexparam += 1
		od
		jsondestroy(iJsonParameters)
	endif

	; append category state and enabled table numbers to JSON
	jsoninsertval(giscss_stateJson, "catstatetable", giscss_instrState)
	jsoninsertval(giscss_stateJson, "catenabledtable", giscss_catEnabled)

	; send JSON state to host, init time only
	io_sendstring("scss_state", jsondumps(giscss_stateJson, 0))
	;prints jsondumps(giscss_stateJson)

	; global parameter handling, explicitly specified right now
	gkseq_tempo = chnget:k("scss_bpm")

	; sequence triggered and continuous instruments
	_scss_st_seq()

	; launch onComplete instrument if specified
	if (strcmp(SonComplete, "") != 0) then
		schedule(SonComplete, 0, -1)
	endif

	; get all audio and output
	aL, aR scss_getcategorybusses
	outs aL, aR
endin

schedule("scss_boot", 0, -1, "$SCSS_BOOT_INSTRUMENT")

#end