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jMksf.py
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jMksf.py
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#!python
#
# build or dump a soundfont
#
# In progress: stereo samples (works!)
# Note: stereo sf with some mono files not yet tested.
# I bet it takes as much room as fully stereo sf.
# Would be nice but not trivial to fix this, but
# currently, the odd/even-ness of sample idices
# is used to distinguish left from right. I'd have
# to put the concept of stereo & left/right in at
# a more fundamental level.
#
# self.stereo also used to calculate number of zones.
# Would have to actually iterate through zones to
# count them. IGEN_PER_ZONE would no longer work.
DEBUG = False
LOOP_FOR_SFZ = False # whether to loop at the end to overcome sfz bug
import sys
import time
import math
import jriff
import jwave
from jtype import *
generalcontrollers = (
(0, "NoController"),
(2, "NoteOnVelocity"),
(3, "NoteOnKeyNumber"),
(10, "PolyPressure"),
(13, "ChannelPressure"),
(14, "PitchWheel"),
(16, "PitchWheelSensitivity"),
)
modtranstypes = (
(0, "linear"),
)
modtypes = (
(0, "linear"),
(1, "concave"),
(2, "convex"),
(3, "switch"),
)
samplinkvals = (
(1, "monoSample", ),
(2, "rightSample", ),
(4, "leftSample", ),
(8, "linkedSample", ),
(0x8001, "RomMonoSample", ),
(0x8002, "RomRightSample", ),
(0x8004, "RomLeftSample", ),
(0x8008, "RomLinkedSample", ),
)
genvals = (
( 0, "startOffset" ),
( 1, "endOffset" ),
( 2, "stLoopOffset" ),
( 3, "endloopAddrsOffset" ),
( 4, "startCoarseOffset" ),
( 5, "modLfoToPitch" ),
( 6, "vibLfoToPitch" ),
( 7, "modEnvToPitch" ),
( 8, "initFFc" ),
( 9, "initFQ" ),
( 10, "modLfoToFilterFc" ),
( 11, "modEnvToFilterFc" ),
( 12, "endAddrsCoarseOffset" ),
( 13, "modLfoToVolume" ),
( 14, "unused1" ),
( 15, "chorusEffectsSend" ),
( 16, "reverbEffectsSend" ),
( 17, "pan" ),
( 18, "unused2" ),
( 19, "unused3" ),
( 20, "unused4" ),
( 21, "delModLFO" ),
( 22, "freqModLFO" ),
( 23, "delVibLFO" ),
( 24, "freqVibLFO" ),
( 25, "delModEnv" ),
( 26, "attModEnv" ),
( 27, "holdModEnv" ),
( 28, "decayModEnv" ),
( 29, "susModEnv" ),
( 30, "relModEnv" ),
( 31, "keynumToModEnvHold" ),
( 32, "keynumToModEnvDecay" ),
( 33, "delVolEnv" ),
( 34, "attVolEnv" ),
( 35, "holdVolEnv" ),
( 36, "decayVolEnv" ),
( 37, "susVolEnv" ),
( 38, "relVolEnv" ),
( 39, "keynumToVolEnvHold" ),
( 40, "keynumToVolEnvDecay" ),
( 41, "instrument" ),
( 42, "reserved1" ),
( 43, "kRange" ),
( 44, "vRange" ),
( 45, "stLoopCoarseOff" ),
( 46, "keynum" ),
( 47, "velocity" ),
( 48, "initAtten" ),
( 49, "reserved2" ),
( 50, "endLoopCoarseOffset" ),
( 51, "coarseTune" ),
( 52, "fTune" ),
( 53, "sampID" ),
( 54, "sModes" ),
( 55, "reserved3" ),
( 56, "scTuning" ),
( 57, "exclusiveClass" ),
( 58, "overridingRootKey" ),
( 59, "unused5" ),
( 60, "endOper" ),
)
midicontrollers = (
(1, "Mod Wheel"),
(2, "Breath Contoller"),
(4, "Foot Controller"),
(5, "Portamento Time"),
(7, "Main Volume"),
(8, "Balance"),
(10, "Pan"),
(11, "Expression"),
(12, "FX ctrl 1"),
(13, "FX ctrl 2"),
(16, "GP #1"),
(17, "GP #2"),
(18, "GP #3"),
(19, "GP #4"),
(64, "Sustain"),
(65, "Portamento"),
(66, "Sostenuto"),
(67, "Soft Pedal"),
(68, "Legato Footswitch"),
(69, "Hold 2"),
(70, "Sound C1 (Sound Variation)"),
(71, "Sound C2 (Timbre/Harmonic Content)"),
(72, "Sound C3 (Release Time)"),
(73, "Sound C4 (Attack Time)"),
(74, "Sound C5 (Brightness)"),
(75, "Sound C6"),
(76, "Sound C7"),
(77, "Sound C8"),
(78, "Sound C9"),
(79, "Sound C10"),
(80, "GP #5"),
(80, "GP #6"),
(80, "GP #7"),
(80, "GP #8"),
(84, "Portamento"),
(91, "FX 1 Depth (External)"),
(92, "FX 2 Depth (Tremolo)"),
(93, "FX 3 Depth (Chorus)"),
(94, "FX 4 Depth (Detune)"),
(95, "FX 5 Depth (Phaser)"),
)
MOD_VAL_MASK = 0x007f
MOD_C_MASK = 0x0080
MOD_D_MASK = 0x0100
MOD_P_MASK = 0x0200
MOD_TYPE_MASK = 0xFC00
class SfMod(Uint16):
def str(self, val):
typev = val & MOD_TYPE_MASK
indexv = val & MOD_VAL_MASK
type = modType.str(typev)
if val & MOD_C_MASK:
C = "C"
index = midiCtrllr.str(indexv)
else:
C = " "
index = generalCtrllr.str(indexv)
if val & MOD_D_MASK:
D = "-"
else:
D = "+"
if val & MOD_P_MASK:
P = "P"
else:
P = " "
return "0x%04x: %s %s %s%s" % (val, type, P, D, index)
generalCtrllr = Enum16(generalcontrollers) # for a bit-field: don't use in structs
modType = Enum16(modtypes) # for a bit-field: don't use in structs
midiCtrllr = Enum16(midicontrollers)
sampLink = Enum16(samplinkvals)
sfGen = Enum16(genvals)
sfTrans = Enum16(modtranstypes)
sfMod = SfMod()
chan_names = "LR3456"
def copy_samp_data(sfname, outf, chan):
try:
inf = file(sfname, "rb")
except IOError, msg:
print msg
sys.exit(1)
riff = jwave.RiffChunk(inf)
riff.readHeader()
iwave = jwave.WaveChunk(riff=riff, inf=inf)
iwave.readHeader()
if chan > iwave.fmt.numChan -1:
print >>sys.stderr, (
"\nWarning: mono wave file '%s' for stereo soundfont"
% sfname)
if iwave.fmt.bitsPerSample != 16:
print "%s: Only 16-bit samples are supported by sf format" % sfname
print "(bits per sample = %d)" % iwave.fmt.bitsPerSample
sys.exit(1)
if DEBUG:
return 0
iwave.seekSample(0)
blksize = 4096
if iwave.fmt.numChan == 1:
sys.stdout.write(".")
bytecount = iwave.numSamples * 2 # 2 bytes per sample
# print "0x%08x, %9d" % (bytecount, iwave.numSamples) # %%%
count = bytecount
while count > blksize:
outf.write(iwave.inf.read(blksize))
count -= blksize
if count:
outf.write(iwave.inf.read(count))
else:
sys.stdout.write(chan_names[chan])
bytecount = iwave.numSamples * 2 # 2 bytes per sample
count = bytecount * iwave.fmt.numChan
while count > blksize:
buf = iwave.inf.read(blksize)
for ix in range(0, blksize):
if ((ix >> 1) % iwave.fmt.numChan) == chan:
outf.write(buf[ix])
count -= blksize
if count:
buf = iwave.inf.read(count)
for ix in range(0, count):
if ((ix >> 1) % iwave.fmt.numChan) == chan:
outf.write(buf[ix])
return bytecount
def sample_info(sfname):
try:
inf = file(sfname, "rb")
except IOError, msg:
print msg
sys.exit(1)
riff = jwave.RiffChunk(inf)
riff.readHeader()
wave = jwave.WaveChunk(riff=riff, inf=inf)
wave.readHeader()
if wave.fmt.numChan == 1:
stereo = False
else:
stereo = True
if wave.fmt.bitsPerSample != 16:
print "%s: Only 16-bit samples are supported by sf format" % sfname
print "(bits per sample = %d)" % wave.fmt.bitsPerSample
sys.exit(1)
start_samp = 0
num_samps = wave.numSamples
rate = wave.fmt.sampleRate
return (start_samp, num_samps, rate, stereo)
##########################################
#
# call handler for chunk if registered.
#
# args[0] = handlers
# args[1] = original args
#
def handle_sf_chunk(chunk, args):
(handlers, callargs) = args
if "*" in args[0]:
(handler, harg) = handlers["*"]
handler(chunk, (harg, callargs))
if chunk.format in args[0]:
(handler, harg) = handlers[chunk.format]
handler(chunk, (harg, callargs))
elif "?" in args[0]:
(handler, harg) = handlers["?"]
handler(chunk, (harg, callargs))
##########################################
#
class Sf:
# NUM_ZEROS_AT_SAMPLE_END = 32
# NUM_ZEROS_AT_SAMPLE_END = 46
NUM_ZEROS_AT_SAMPLE_END = 100
zeros = ""
for ix in range(0, NUM_ZEROS_AT_SAMPLE_END):
zeros += "\000\000"
def __init__(self, inf=None, outf=None, stereo=False):
self.riff = jriff.RiffFile(inf, outf)
self.phdr = []
self.pbag = []
self.pmod = []
self.pgen = []
self.inst = []
self.ibag = []
self.imod = []
self.igen = []
self.shdr = []
self.inf = inf
self.outf = outf
self.stereo = stereo
def readRiff(self):
self.riff.read()
def handleriff(self, handlers, args=None):
self.riff.walk(handle_sf_chunk, (handlers, self))
def dumpriff(self, args=None):
self.riff.walk(handle_sf_chunk, (_dumpriff, args))
def readKmap(self, inf, basename):
# set defaults
self.bankname = basename
self.presetname = basename # %%% kluge: sf can have multiple
self.samples = {} # collect sample file names
self.release = int(1200.0 * math.log(0.1, 2))
self.samplesByNum = []
sampNdx = 0
self.layers = []
for line in inf.readlines():
line = line.strip()
if len(line) == 0 or line[0] == "#":
continue
toks = line.split(":")
kw = toks[0]
if kw == "BANKNAME":
self.bankname = toks[1]
print "bank name:", self.bankname
if kw == "DESIGNER":
self.designer = toks[1]
print "designer:", self.designer
if kw == "COPYRIGHT":
self.copyright = toks[1]
print "copyright:", self.copyright
if kw == "COMMENT":
self.comment = toks[1]
print "comment:", self.comment
if kw == "PRESET":
self.presetname = toks[1]
print "preset:", self.presetname
if kw == "RELEASE":
rt = float(toks[1])
self.release = int(1200.0 * math.log(rt, 2))
if kw == "VLAYER":
vlname = toks[1]
vl_lo = toks[2]
vl_hi = toks[3]
atten = toks[4]
vl_zones = []
self.layers.append((vlname, int(vl_lo), int(vl_hi), int(atten), vl_zones))
if kw == "SAMP":
fname = toks[1]
k_lo = toks[2]
k_hi = toks[3]
k_unity = toks[4]
vl_zones.append((fname, int(k_lo), int(k_hi)))
if fname not in self.samples.keys():
self.samples[fname] = (fname, sampNdx)
self.samplesByNum.append((fname, int(k_unity)))
sampNdx += 1
if self.stereo:
self.samplesByNum.append((fname, int(k_unity)))
sampNdx += 1
for l in self.layers:
(vlname, vl_lo, vl_hi, atten, vl_zones) = l
print "Layer:", vlname, "loV:", vl_lo, "hiV:", vl_hi, \
"atten(cB):", atten, len(vl_zones), "zones"
def writeRiffHdr(self):
self.outf.write("RIFF")
self.riffLenLoc = self.outf.tell()
self.outf.write("aaaa") # write placeholder, come back later
self.outf.write("sfbk")
self.riffLen = 4 # count "sfbk" above
def writeInfo(self):
self.outf.write("LIST")
len_loc = self.outf.tell()
self.outf.write("aaaa") # write placeholder, come back later
self.outf.write("INFO")
dlen = 4 # count "INFO" above
self.outf.write("ifil")
uint32.writeval(4, self.outf)
dlen += 8
dlen += uint16.writeval(2, self.outf)
dlen += uint16.writeval(1, self.outf)
PLAYER = "E-mu 10K1"
self.outf.write("INAM")
type = ChArray((jriff.roundup(len(self.bankname)+1),))
uint32.writeval(type.size(), self.outf)
dlen += 8
dlen += type.writeval(self.bankname, self.outf)
self.outf.write("isng")
type = ChArray((jriff.roundup(len(PLAYER)+1),))
uint32.writeval(type.size(), self.outf)
dlen += 8
dlen += type.writeval(PLAYER, self.outf)
self.outf.write("IENG")
type = ChArray((jriff.roundup(len(self.designer)+1),))
uint32.writeval(type.size(), self.outf)
dlen += 8
dlen += type.writeval(self.designer, self.outf)
TOOL="jMksf.py"
self.outf.write("ISFT")
type = ChArray((jriff.roundup(len(TOOL)+1),))
uint32.writeval(type.size(), self.outf)
dlen += 8
dlen += jriff.roundup(type.writeval(TOOL, self.outf))
self.outf.write("ICRD")
y = time.localtime()
tstamp = "%04d/%02d/%02d-%02d:%02d " % (y[0], y[1], y[2], y[3], y[4])
type = ChArray((jriff.roundup(len(tstamp)+1),))
uint32.writeval(type.size(), self.outf)
dlen += 8
dlen += type.writeval(tstamp, self.outf)
self.outf.write("ICMT")
type = ChArray((jriff.roundup(len(self.comment)+1),))
uint32.writeval(type.size(), self.outf)
dlen += 8
dlen += type.writeval(self.comment, self.outf)
self.outf.write("ICOP")
type = ChArray((jriff.roundup(len(self.copyright)+1),))
uint32.writeval(type.size(), self.outf)
dlen += 8
dlen += type.writeval(self.copyright, self.outf)
self.outf.seek(len_loc, 0)
uint32.writeval(dlen, self.outf)
self.outf.seek(len_loc + 4 + dlen, 0)
return dlen + 8
def writeSdta(self):
self.outf.write("LIST")
len_loc = self.outf.tell()
self.outf.write("aaaa") # write placeholder, come back later
self.outf.write("sdta")
dlen = 4 # count "sdata" above
dlen += self.writeSmpl()
self.outf.seek(len_loc, 0)
uint32.writeval(dlen, self.outf)
self.outf.seek(len_loc + 4 + dlen, 0)
return dlen + 8
def writeSmpl(self):
self.outf.write("smpl")
len_loc = self.outf.tell()
self.outf.write("aaaa") # write placeholder, come back later
dlen = 0
print "Copying sample data:",
if DEBUG:
print "(Test mode -- not actually copying sample data.)"
ix = 0
for (sfname, k_unity) in self.samplesByNum:
if self.stereo:
chan = ix & 1
else:
chan = 0
dlen += copy_samp_data(sfname, self.outf, chan)
self.outf.write(Sf.zeros)
dlen += Sf.NUM_ZEROS_AT_SAMPLE_END * 2
ix += 1
print
self.outf.seek(len_loc, 0)
uint32.writeval(dlen, self.outf)
self.outf.seek(len_loc + 4 + dlen, 0)
return dlen + 8
def writePhdr(self):
name = "phdr"
struc = _structs[name]
self.outf.write(name)
count = 1
dlen = struc.size() * (count + 1)
uint32.writeval(dlen, self.outf)
# %%% Note: currently handles only one preset: should have a loop here,
# and adjust the count above
struc.writeval(
(
self.presetname, # presetName
0, # preset
0, # bank
0, # presetBagNdx
0, # library
0, # genre
0, # morphology
), self.outf)
struc.writeval(("EOP", 255,0,1, 0,0,0), self.outf)
return dlen + 8
def writePbag(self):
name = "pbag"
struc = _structs[name]
self.outf.write(name)
count = 1
dlen = struc.size() * (count + 1)
uint32.writeval(dlen, self.outf)
genNdx = 0
modNdx = 0
struc.writeval((genNdx, modNdx), self.outf)
genNdx += 1
struc.writeval((genNdx, modNdx), self.outf)
return dlen + 8
def writePgen(self):
name = "pgen"
struc = _structs[name]
self.outf.write(name)
count = 1
dlen = struc.size() * (count + 1)
uint32.writeval(dlen, self.outf)
instNdx = 0
struc.writeval((
41, # genOper: "instrument"
instNdx, # genAmt: instrument index
), self.outf)
instNdx += 1
struc.writeval((0, 0), self.outf)
return dlen + 8
def writePmod(self):
name = "pmod"
struc = _structs[name]
self.outf.write(name)
count = 0
dlen = struc.size() * (count + 1)
uint32.writeval(dlen, self.outf)
struc.writeval((0, 0, 0, 0, 0), self.outf)
return dlen + 8
# One instrument; one ibag per zone
# (Stereo: two ibags per zone?)
def writeInst(self):
name = "inst"
struc = _structs[name]
self.outf.write(name)
count = 1
dlen = struc.size() * (count + 1)
uint32.writeval(dlen, self.outf)
# Count the number of zones.
self.num_zones = 0 # count & save number of zones, too
for layer in self.layers:
(vlname, vl_lo, vl_hi, atten, vl_zones) = layer
for zone in vl_zones:
self.num_zones += 1
if self.stereo:
self.num_zones *= 2
instBagNdx = 0
struc.writeval((self.presetname, instBagNdx), self.outf)
instBagNdx += self.num_zones
struc.writeval(("EOI", instBagNdx), self.outf)
return dlen + 8
IGEN_PER_ZONE = 5
def writeIbag(self):
name = "ibag"
struc = _structs[name]
self.outf.write(name)
len_loc = self.outf.tell()
self.outf.write("aaaa") # write placeholder, come back later
igen_per_zone = Sf.IGEN_PER_ZONE
if self.stereo:
igen_per_zone += 1
genNdx = 0
modNdx = 0
for layer in self.layers:
(vlname, vl_lo, vl_hi, atten, vl_zones) = layer
for zone in vl_zones:
struc.writeval((genNdx, modNdx), self.outf)
genNdx += igen_per_zone
if self.stereo:
struc.writeval((genNdx, modNdx), self.outf)
genNdx += igen_per_zone
struc.writeval((genNdx, modNdx), self.outf)
dlen = struc.size() * (self.num_zones + 1)
self.outf.seek(len_loc, 0)
uint32.writeval(dlen, self.outf)
self.outf.seek(len_loc + 4 + dlen, 0)
return dlen + 8
def writeIgen(self):
name = "igen"
struc = _structs[name]
self.outf.write(name)
if self.stereo:
num_chans = 2
igen_per_zone = Sf.IGEN_PER_ZONE + 1
else:
num_chans = 1
igen_per_zone = Sf.IGEN_PER_ZONE
count = self.num_zones * igen_per_zone
dlen = struc.size() * (count + 1)
uint32.writeval(dlen, self.outf)
if LOOP_FOR_SFZ:
# loop at the end to overcome sfz bug
# As it turns out, not necessary if there are extra zeros
looped = 1
else:
looped = 0
instNdx = 0
for layer in self.layers:
#{
(vlname, vl_lo, vl_hi, atten, vl_zones) = layer
for zone in vl_zones:
(sname, k_lo, k_hi) = zone
for ix in range(0, num_chans):
struc.writeval((
43, # genOper: "kRange"
(k_hi << 8) + k_lo, # genAmt: key range, lo-hi
), self.outf)
struc.writeval((
44, # genOper: "vRange"
(vl_hi << 8) + vl_lo, # genAmt: velocity range, lo-hi
), self.outf)
struc.writeval((
38, # genOper: "relVolEnv"
self.release, # genAmt: rel time
), self.outf)
struc.writeval((
54, # genOper: "sModes"
looped, # genAmt: looped sample or not
), self.outf)
if False:
struc.writeval((
48, # genOper: "initAtten"
atten, # genAmt:
), self.outf)
if self.stereo:
if ix:
pan = 500
else:
pan = -500
struc.writeval((
17, # genOper: "pan"
pan, # genAmt: -500 for left, 500 for right.
), self.outf)
struc.writeval((
53, # genOper: "sampID"
self.samples[sname][1] + ix, # genAmt: sample index
), self.outf)
#}
struc.writeval((0, 0), self.outf)
return dlen + 8
def writeImod(self):
name = "imod"
struc = _structs[name]
self.outf.write(name)
count = 0
dlen = struc.size() * (count + 1)
uint32.writeval(dlen, self.outf)
struc.writeval((0, 0, 0, 0, 0), self.outf)
return dlen + 8
def writeShdr(self):
name = "shdr"
struc = _structs[name]
self.outf.write(name)
count = len(self.samplesByNum)
dlen = struc.size() * (count + 1)
uint32.writeval(dlen, self.outf)
loc = 0
ix = 0
for (sfname, k_unity) in self.samplesByNum:
(start, count, rate, stereo) = sample_info(sfname)
sname = sfname.replace("\\", "/")
sname = sname.split("/")[-1].replace(".wav", "")
if stereo :
if self.stereo:
if (ix & 1) == 0:
modename = "left"
mode = 4 # "leftSample"
other = ix + 1
else:
modename = "right"
mode = 2 # "rightSample"
other = ix - 1
sname += "-r"
else:
modename = "left"
mode = 1 # "monoSample"
other = 0
else:
modename = "mono"
mode = 1 # "monoSample"
other = 0
seconds = count / rate
msec = (count * 1000) / rate - seconds * 1000
print ( "%-24s %-6s, %3d:%03d sec, %s"
% (sfname, modename, seconds, msec, modename))
if LOOP_FOR_SFZ:
lstart = loc + count - 8
lend = loc + count
else:
lstart = 0
lend = 0
struc.writeval(
(
sname,
loc + start,
loc + count,
lstart, # startLoop
lend, # endLoop
rate, # sampleRate
k_unity, # origPitch
0, # pitchCorrctn
other, # sampleLink
mode, # sampleType
), self.outf)
loc += count + Sf.NUM_ZEROS_AT_SAMPLE_END
ix += 1
struc.writeval(("EOS", 0,0,0,0,0,0,0,0,0), self.outf)
return dlen + 8
def writePdta(self):
self.outf.write("LIST")
len_loc = self.outf.tell()
self.outf.write("aaaa") # write placeholder, come back later
self.outf.write("pdta")
dlen = 4 # count "pdata" above
dlen += self.writePhdr()
dlen += self.writePbag()
dlen += self.writePmod()
dlen += self.writePgen()
dlen += self.writeInst()
dlen += self.writeIbag()
dlen += self.writeImod()
dlen += self.writeIgen()
dlen += self.writeShdr()
self.outf.seek(len_loc, 0)
uint32.writeval(dlen, self.outf)
self.outf.seek(len_loc + 4 + dlen, 0)
return dlen + 8
def writeFromKmap(self):
self.writeRiffHdr()
self.riffLen += self.writeInfo()
self.riffLen += self.writeSdta()
self.riffLen += self.writePdta()
self.outf.seek(self.riffLenLoc, 0)
uint32.writeval(self.riffLen, self.outf)
_chArray20 = ChArray((20,))
_structs = {}
_structs["phdr"] = Struct("phdr-entry", (
("presetName", _chArray20 ),
("preset", uint16, ),
("bank", uint16, ),
("presetBagNdx", uint16, ),
("library", uint32, ),
("genre", uint32, ),
("morphology", uint32, ),
))
_structs["pbag"] = Struct("pbag-entry", (
("genNdx", uint16, ),
("modNdx", uint16, ),
))
_structs["pmod"] = Struct("pmod-entry", (
("modSrcOper", sfMod, ),
("modDstOper", sfGen, ),
("modAmt", uint16, ),
("modAmtSrcOper", sfMod, ),
("modTransOper ", sfTrans, ),
))
_structs["pgen"] = Struct("pgen-entry", (
("genOper", sfGen, ),
("genAmt", uint16, ),
))
_structs["inst"] = Struct("inst-entry", (
("instName", _chArray20 ),
("instBagNdx", uint16, ),
))
_structs["ibag"] = Struct("ibag-entry", (
("instGenNdx", uint16, ),
("instModNdx", uint16, ),
))
_structs["imod"] = Struct("imod-entry", (
("modSrcOper", sfMod, ),
("modDstOper", sfGen, ),
("modAmt", uint16, ),
("modAmtSrcOper", sfMod, ),
("modTransOper ", sfTrans, ),
))
_structs["igen"] = Struct("igen-entry", (
("genOper", sfGen, ),
("genAmt", uint16, ),
))
_structs["shdr"] = Struct("shdr-entry", (
("sampleName", _chArray20 ),
("start", uint32, ),
("end", uint32, ),
("startLoop", uint32, ),
("endLoop", uint32, ),
("sampleRate", uint32, ),
("origPitch", uint8, ),
("pitchCorrctn", sint8, ),
("sampleLink", uint16, ),
("sampleType", sampLink, ),
))
def indent_print(str, level):
print "%*s%s" % (level*2, "", str)
def dump_typeval(name, type, val, args, level):
if args:
indent_print("%-20s: %s" % (name, type.str(val) + args), level)
return
indent_print("%-20s: %s" % (name, type.str(val)), level)
def dump_typevalloc(name, type, val, args, level):
(chunk, offset) = args
loc = chunk.inf_loc + offset
print "0x%08x %*s%-20s: %s" % (loc, level*2, "", name, type.str(val))
def read_chunkstructs(chunk, args):
(hargs, sf) = args
if chunk.format not in _structs:
dumpr_chunk(chunk, hargs)
return
attr = getattr(sf, chunk.format, None)
if attr == None:
chunk.prn(chunk.format)
return
chunk.iseek()
struc = _structs[chunk.format]
slen = struc.Len
loc = 0
while loc < chunk.len:
val = struc.read(chunk.inf())
var = struc.var(val)
var.structify()
attr.append((var, chunk))
loc += slen
def dumpr_chunkstructs(chunk, args):
(hargs, callargs) = args
if chunk.format not in _structs:
dumpr_chunk(chunk, hargs)
return
chunk.prnLoc(chunk.format)
chunk.iseek()
struc = _structs[chunk.format]
slen = struc.Len
offset = 0
while offset < chunk.len:
# chunk.prn(" LOC = 0x%08x" % offset)
val = struc.read(chunk.inf())
struc.walkval(val, dump_typevalloc, (chunk, offset), 2)
offset += slen
# Handlers:
#
# Each handler is a map of (func, arg) pairs.
#
# Register for chunk name
# Register "*" to be called for all
# Register "?" to be called if no specific handler is registered
#
# Register function of the form func(chunk, args)
# Return value ignored
def dumpr_chunk(chunk, args=None):
chunk.printHdr()
def do_ifil(chunk, args):