1 files changed, 135 insertions, 0 deletions
diff --git a/site/udo/pvs_fsegproc.udo b/site/udo/pvs_fsegproc.udo
new file mode 100755
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--- /dev/null
+++ b/site/udo/pvs_fsegproc.udo
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+#ifndef UDO_PVSFSEGPROC
+#define UDO_PVSFSEGPROC ##
+/*
+	Segmented multiband frequency processing
+
+	Instruments passed to fsegproc should begin with $FSEGPROCINPUT which will 
+		provide the segment audio as aL and aR, and the segment group as igroupindex
+
+
+	This file is part of the SONICS UDO collection by Richard Knight 2025
+		License: GPL-2.0-or-later
+		http://1bpm.net
+*/
+
+#include "bussing.udo"
+
+gifsegproc_maxsessionindex = 0
+
+opcode _fsegproc_channels, SS, ii
+	isessionindex, igroupindex xin
+	Ssend = sprintf("bp%d_%d_%d", isessionindex, igroupindex, 1)
+	Sreturn = sprintf("bp%d_%d_%d", isessionindex, igroupindex, 0)
+	xout Ssend, Sreturn
+endop
+
+opcode _fsegproc_send, 0, ffiio
+	fL, fR, isessionindex, ifnsegbins, isegindex xin
+	ifnmap = tab_i(isegindex, ifnsegbins)
+	fmL pvsmaska fL, ifnmap, 1
+	fmR pvsmaska fR, ifnmap, 1
+
+	aL pvsynth fmL
+	aR pvsynth fmR
+	bus_mix sprintf("bp%d_%d", isessionindex, isegindex), aL, aR
+	
+	if (isegindex + 1 < ftlen(ifnsegbins)) then
+		_fsegproc_send fL, fR, isessionindex, ifnsegbins, isegindex + 1
+	endif
+endop
+
+
+opcode _fsegproc_receive, aa, iiS[]o
+	isegments, isessionindex, Sinstrs[], igroupindex xin
+	ilen = lenarray(Sinstrs)
+	if (ilen == 1) then
+		Sinstr = Sinstrs[0]
+	elseif (ilen == isegments) then
+		Sinstr = Sinstrs[igroupindex]
+	else
+		index = min(round((ilen / isegments) * igroupindex), isegments - 1)
+		Sinstr = Sinstrs[index]
+	endif
+	aL, aR subinstr Sinstr, igroupindex, sprintf("bp%d_%d", isessionindex, igroupindex)
+	if (igroupindex + 1 < isegments) then
+		arL, arR _fsegproc_receive isegments, isessionindex, Sinstrs, igroupindex + 1
+		aL += arL
+		aR += arR
+	endif
+	xout aL, aR
+endop
+
+
+opcode _fsegproc_inner, aa, ffS[]jpj
+	fL, fR, Sinstrs[], isegments, imode, ifnmap xin
+	if (isegments == -1) then
+		isegments = lenarray(Sinstrs)
+	endif
+	isessionindex = gifsegproc_maxsessionindex
+	gifsegproc_maxsessionindex += 1
+	aL, aR _fsegproc_receive isegments, isessionindex, Sinstrs
+
+	i_, ibins, i_, i_ pvsinfo fL
+	isegmentsize = 0
+	icursegment = 0
+	if (imode == 0) then
+		isegmentsize = round(ibins / isegments)
+	endif
+	if (ifnmap == -1) then
+		ifnmap ftgentmp 0, 0, ibins, 2, 0
+		index = 0
+		indexsegment = 0
+		while (index < ftlen(ifnmap)) do
+			if (imode == 0) then
+				isegment = icursegment
+				if (indexsegment + 1 >= isegmentsize  && icursegment + 1 < isegments) then
+					icursegment += 1
+					indexsegment = 0
+				else
+					indexsegment += 1
+				endif
+			else
+				isegment = round(random(0, isegments - 1))
+			endif
+			tabw_i isegment, index, ifnmap
+			index += 1
+		od
+	endif
+	ifnsegbins ftgentmp 0, 0, -isegments, -2, 0
+	index = 0
+	while (index < isegments) do
+		tabw_i ftgentmp(0, 0, -ibins, -2, 0), index, ifnsegbins
+		index += 1
+	od
+	index = 0
+	while (index < ftlen(ifnmap)) do
+		tabw_i 1, index, tab_i(tab_i(index, ifnmap), ifnsegbins)
+		index += 1
+	od
+	_fsegproc_send fL, fR, isessionindex, ifnsegbins
+	xout aL, aR
+endop
+
+/*
+	mode 0 = sequential, 1 = randomised
+*/
+opcode fsegproc, aa, ffS[]jpj
+	fL, fR, Sinstrs[], isegments, imode, ifnmap xin
+	aL, aR _fsegproc_inner fL, fR, Sinstrs, isegments, imode, ifnmap
+	xout aL, aR
+endop
+
+opcode fsegproc, aa, ffSjpj
+	fL, fR, Sinstr, isegments, imode, ifnmap xin
+	Sinstrs[] fillarray Sinstr
+	aL, aR _fsegproc_inner fL, fR, Sinstrs, isegments, imode, ifnmap
+	xout aL, aR
+endop
+
+#define FSEGPROCINPUT #
+igroupindex = p4
+Sbus = p5
+aL, aR bus_read Sbus
+#
+
+#end