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#!/usr/bin/env python
import csnd, sys
from CsHelpers import *
class Ftable:
def __init__(self):
self.start = 0
self.num = 0
self.size = 8192
self.gen = 10
self.name = "sine"
self.args = [10,1]
def varname(self):
return "gi_"+self.name
def __repr__(self):
head = [self.varname(), 'ftgen', str(self.num)+', ']
args = [str(self.start), str(self.size), str(self.gen)] + map(str, self.args)
return ' '.join(head) + ', '.join(args)
class FtableBreakPoint(Ftable):
"constructs a Gen 2 ftable"
def __init__(self, name, *args, **num):
Ftable.__init__(self)
self.name = name
self.gen = -2
self.size = (2**i for i in xrange(2,100) if 2**i >= len(args)).next()
self.args = args
if num.has_key('num'): self.num = num['num']
class FtableSample(Ftable):
"loads samples into GEN 1, and optional basepitch storage"
def __init__(self, pathname, *basepit, **num):
Ftable.__init__(self)
self.gen = -1
filename = pathname.rpartition('/')[-1]
ndx = filename.find('.')
if ndx != -1:
self.name = removeillegals(filename[0:ndx])
else: self.name = removeillegals(filename)
self.size = 0
self.args = ['"'+pathname+'"', 0, 0, 0]
if len(basepit) > 0:
self.basePitch = basepit[0]
if num.has_key('num'): self.num = num['num']
class FtableLookup(Ftable):
def __init__(self, name, skew, *sampletables, **num):
"uses GEN17 to make an x,y lookup table suitable for mid pitch lookup. GEN17"
#skew calculates the point at which the next table is lookup up.
#pitnamedict is a dictionary of {basepitches:samplenames,...}
Ftable.__init__(self)
pitnamedict = {}
for s in sampletables:
pitnamedict[s.basePitch] = s.varname()
sorted = []
for key in pitnamedict:
sorted.append([key, pitnamedict[key]])
sorted.sort()
args = []
for i in range(len(sorted)):
if i == 0:
args.append(i)
args.append(sorted[i][1])
else:
args.append(int(round (sorted[i][0] - (sorted[i][0] - sorted[i-1][0]) * skew)))
args.append(sorted[i][1])
self.gen = -17
self.name = name
self.size = 128
self.args = args
if num.has_key('num'): self.num = num['num']
class OrcChan:
def __init__(self, name, direction, rate, init):
self.name = name
self.direction = direction
self.rate = rate
self.initval = init
def mode(self):
return (1 if self.direction == 'input' else (2 if self.direction == 'output' else 3))
def varname(self):
return 'g'+('a' if self.rate == 'audio' else ('k' if self.rate == 'control' else ('S' if self.rate == 'string' else 'i')))+'_'+self.name
def initline(self):
return self.varname() + '\t' + 'init' + '\t' + str(self.initval)
def __repr__(self):
final = self.varname() + ' '+'chnexport'+' \"'+self.name+'\", '+str(self.mode())+('\n'+self.initline() if (self.rate == 'audio' or self.rate == 'string') else ',2,1,0,1'+ '\n'+self.initline())
return final
def orcChannelMaker(insnames, parameter, direction = "input", rate = "control", init = 1):
"a simple function to generate numerous channels of the same type"
result = []
for i in insnames:
name = i+parameter
o = OrcChan(name, direction, rate, init)
result.append(o)
return result
#Not cognisant of scoreline parameter variables at this stage.
class OrcInstrument:
def __init__(self, name='undefined'):
self.name = name
self.lines = []
self.effect = False #if true, then an 'always on' scoreline is automatically added.
def header(self):
return ["instr \t$"+self.name+"\n"]
def varname(self):
return "$"+self.name
def insertLine(self, line):
self.lines.append(line)
def routeOut(self, asendvar, outINS, SetLvlIns, gkvarname = 1, *chan):
"SO, gkvarname is 1 by default, but should be the gkvariable if going to mixout"
SetLvlIns.setLevel(self, outINS, gkvarname)
self.insertLine("\tMixerSend "+asendvar+", p1, "+outINS.varname()+", "+str((chan[0] if len(chan)>0 else 0)))
def routeIn(self, ainvar, *chan):
self.lines.insert(0, ainvar+" MixerReceive "+"p1,"+str((chan[0] if len(chan)>0 else 0)))
def __repr__(self):
result = self.header() + self.lines
return "\n".join(result) + '\n\nendin\n'
class OrcSetLevelInstrument(OrcInstrument):
def __init__(self):
OrcInstrument.__init__(self)
self.name = "mixerSetLevels"
self.routemap = {}
def setLevel(self, sendINS, bussINS, gkvarname):
self.routemap[sendINS.name] = bussINS.name
self.insertLine("\t MixerSetLevel "+sendINS.varname()+", "+bussINS.varname()+", "+str(gkvarname)+"\n") #change this to the gkvariable name
def mixout(self, ainvar, *chan):
"sends output of an instrument to a mixer buss"
self.insertLine("\tMixerSend "+ainvar+", p1, "+"$output, "+str((chan[0] if len(chan)>0 else 0)))
class OrcMixoutInstrument(OrcInstrument):
def __init__(self):
OrcInstrument.__init__(self)
self.name = "output"
self.routeIn("am")
self.insertLine("""
am eqfil am, 900, 200, 0.2
a3 nreverb am, 0.12, 1, 0, 8, gi_rvbc1, 4, gi_rvba1
a4 nreverb am, 0.12, 1, 0, 8, gi_rvbc2, 4, gi_rvba2
a3 = am + a3*0.23
a4 = am + a4*0.23
outs a3, a4
;outs am, am
MixerClear
""")
class OrcConstructor:
def __init__(self):
self.orc = ""
self.sco = "f0 28800 \n"
self.sr = 44100
self.ksmps = 100
self.nchnls = 2
self.dbfs = 1
self.macros = []
self.ftabs = []
self.chans = []
self.instruments = []
self.csline = []
self.nameNumber = {}
self.insertftables(Ftable()) #insert a sine by default
def insertLines(self, lines):
self.csline.append(lines)
def insertInsnums(self, Instruments):
insnumgen = (i for i in xrange(1, 100))
for i in Instruments:
num = insnumgen.next()
self.nameNumber[i.name] = num
self.macros.append("#define "+i.name+" #"+str(num)+"#")
if i.effect:
self.sco = self.sco + "i%s 0 -1 \n" %num
def insertftables(self, *tabs):
"inserts Orcfunction tables using Ftable objects"
for t in tabs:
self.ftabs.append(t)
def insertChannels(self, *OrcChans):
"inserts a Orcchannel objects into a Csound orc"
for c in OrcChans:
self.chans.append(c)
def appendInstruments(self, *CsIns):
for i in CsIns:
self.instruments.append(i)
def prependInstrument(self, CsIns):
"inserts an instrument at the front of the orchestra"
self.instruments.insert(0, CsIns)
def exportOrc(self):
self.insertInsnums(self.instruments)
header = [x+y for x,y in zip(['sr = ', 'ksmps = ', 'nchnls = ', '0dbfs = '], map(str,[self.sr, self.ksmps, self.nchnls, self.dbfs]))]
insnums = self.macros
ftabs = map(str, self.ftabs)
lines = map(str, self.csline)
chans = map(str, self.chans)
Ins = map(str, self.instruments)
result = header + insnums + ftabs + chans + lines + Ins
return '\n'.join(result)
def __repr__(self):
return "CSound orchestra object" + str(self.__dict__)
class sndInfo:
def __init__(self, path, *csd):
"query information of an audio file at path. csd is a precompiled csound instance"
if len(csd) == 0:
cs = Csound()
self.cs = Csound.csound
else: self.cs = csd[0] #can pass a precompiled csound as an argument
self.contents = ''
args = csnd.CsoundArgVList()
args.Append('sndinfo')
args.Append('-i')
args.Append(path)
old_stdout = sys.stdout
sys.stdout = self
err = self.cs.RunUtility('sndinfo', args.argc(), args.argv())
sys.stdout = old_stdout
self._lines()
header = [l for l in self.lines if l.__contains__('\tsrate')]
self.header = header[0].split(',')
def write(self, c):
self.contents += c
def _lines(self):
self.lines = self.contents.splitlines()
def sr(self):
srl = [c for c in self.header[0] if c.isdigit()]
return int(''.join(srl))
def chans(self):
if self.header[1].__contains__('monaural'):
return 1
else: return 2
def type(self):
return self.header[2]
def duration(self):
s = self.header[3]
return float(''.join([n for n in s if n.isdigit() or n == '.']))
def findNoteAttribute(self, attr):
result = 0
for i in self.lines:
if i.startswith(attr, 2):
result = int(''.join([n for n in i if n.isdigit()]))
return result
def BaseNote(self):
"return the Base Note"
return self.findNoteAttribute('Base')
def orcLoadSamples(orc, Cs, fnlookupname, *paths):
"Inserts Gen1 ftables for samples located in paths, and an associated GEN17 midi pitch lookup table based on base pitch in soundfile into orc"
sfns = []
for p in paths:
for f in ResourceList(p,'.aif'):
snd = sndInfo(p+'/'+f, Cs.csound)
bn = snd.BaseNote()
fn = FtableSample(p+'/'+f, bn)
orc.insertftables(fn)
sfns.append(fn)
flookup = FtableLookup(fnlookupname, 0.3, *sfns)
orc.insertftables(flookup)
return flookup
if __name__ == '__main__':
print "running OrcBuilder as __main__"
from CsSched import *
Csynth = Csound()
TimeQueue = Sched()
#Create a csound orchestra
orc = OrcConstructor()
orc.sr = 22050
orc.ksmps = 256
#Function tables
lookuptabs = [orcLoadSamples(orc, Csynth, instr+"Lookup", eval(instr+"AudioPath")) for instr in INAMES]
ftabs = [FtableBreakPoint("rvbc1", -558, -594, -638, -678, -711, -745, -778, -808, 0.8, 0.79, 0.78, 0.77, 0.76, 0.75, 0.74, 0.73),
FtableBreakPoint("rvbc2", -517, -540, -656, -699, -752, -799, -818, -841, 0.8, 0.79, 0.78, 0.77, 0.76, 0.75, 0.74, 0.73),
FtableBreakPoint("rvba1", -278, -220, -170, -122, 0.4, 0.52, 0.64, 0.76),
FtableBreakPoint("rvba2", -333, -263, -166, -105, 0.5, 0.52, 0.64, 0.76)]
orc.insertftables(*ftabs)
#Control Channels: Should conform to the Parameter naming convention already in use.
volumechans = orcChannelMaker(INAMES, "Volume")
timbrechans = orcChannelMaker(INAMES, "Timbre", init = 0.5)
orc.insertChannels(*volumechans)
orc.insertChannels(*timbrechans)
#timbrechans[0].varname()
#Instruments
#first, establish a setlevel instrument
setlevels = OrcSetLevelInstrument()
setlevels.effect = True
#then work backwards.
#A mixer:
mixerout = OrcMixoutInstrument()
mixerout.effect = True
#sampler instruments
samplerbody = """
idur = p3
iamp = p4 * (0dbfs / 127)
kcps init cpsmidinn(p5)
isamp table p5, %s
a1 loscil iamp, kcps, isamp
a1 dcblock a1
kdeclick linseg 0, 0.001, 1, idur - 0.03 - 0.001, 1, 0.03, 0
a1 = a1 * kdeclick
"""
#timbre instruments
#be aware that samplerates lower than 22050 tend to blow up the rezzy filter
#at this level of resonance.
timbrebody = ("""
idur = p3
ires = 4.75
kfco expcurve %s, 14
kfco = kfco * """ + str(orc.sr*0.5 * 0.65 + 200) + """
a1 rezzy a1, kfco, ires
""")
SamplerInstruments, TimbreInstruments = [OrcInstrument(i+'Sampler') for i in INAMES], [OrcInstrument(i+'Timbre') for i in INAMES]
#it would be nice to abstract this one, but it's quite complex. Maybe later.
for Si, Ti in zip(SamplerInstruments, TimbreInstruments):
Si.insertLine(samplerbody % [x for x in [n.varname() for n in lookuptabs] if x.__contains__(Si.name[:-7])][0])
Ti.insertLine(timbrebody % [y for y in [j.varname() for j in timbrechans] if y.__contains__(Ti.name[:-6])][0])
Si.routeOut('a1', Ti, setlevels)
Ti.routeOut('a1', mixerout, setlevels)
Ti.routeIn('a1')
Ti.effect = True
orc.appendInstruments(Si, Ti)
#finally, add the mixer and level instruments
orc.appendInstruments(mixerout)
orc.prependInstrument(setlevels)
#get numbers from names:
#orc.nameNumber['BassSampler']
print orc.exportOrc()
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