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More BIAB fixes

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This commit is contained in:
Matthias Neeracher 2007-10-09 05:15:41 +00:00
parent 2d90e4ac2d
commit ed7870b336
1 changed files with 26 additions and 13 deletions
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39
Filters/VLBIABType.reader
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@ -2,7 +2,7 @@
# #
# VLBIABType.reader - Import Band-in-a-Box files # VLBIABType.reader - Import Band-in-a-Box files
# #
# Reverse engineering by Alf Warnock & Alain Brenzikofer # Based on reverse engineering work by Alf Warnock & Alain Brenzikofer
# #
DEBUG = false DEBUG = false
@ -317,17 +317,19 @@ numRepeats = $stdin.read(1)[0]
biab = $stdin.read biab = $stdin.read
styleFile = nil styleFile = nil
if biab =~ /B.(.{1,8})\.STY/ if biab =~ /B.(.{1,8})\.STY/m
styleFile = $1 styleFile = $1
end end
noteCount = 0 noteCount = 0
if biab =~ /\x00\xFF\x00(?:\x0D|\x0E)(..)/ if biab =~ /\x00\xFF\x00(?:\x0D|\x0E|\x0F)(..)/m
noteCount = $1.unpack('v')[0] noteCount = $1.unpack('v')[0]
end end
styleFile = File.basename(styleFile, '.STY') if styleFile
puts "Style #{styleFile}" if DEBUG styleFile = File.basename(styleFile, '.STY')
groove = STY_GROOVE[styleFile] || groove puts "Style #{styleFile}" if DEBUG
groove = STY_GROOVE[styleFile] || groove
end
OUTPUT['groove'] = groove[0] || 'Swing' OUTPUT['groove'] = groove[0] || 'Swing'
if groove.size > 1 if groove.size > 1
PROP['timeNum'] = groove[1] PROP['timeNum'] = groove[1]
@ -336,9 +338,11 @@ end
RAWNOTES = [] RAWNOTES = []
ONSETS = [0,0,0,0,0,0,0,0,0,0,0,0] ONSETS = [0,0,0,0,0,0,0,0,0,0,0,0]
if biab.sub!(/.*?\xA0\xB0\xC1/, '') if biab.sub!(/^.*?\xA0\xB0\xC1/m, '')
noteCount = biab.length / 12 if noteCount == 0
(0...noteCount).each do |i| (0...noteCount).each do |i|
onset, channel, pitch, velocity, duration = biab[i*12, 12].unpack('VCCCxV') onset, channel, pitch, velocity, duration = biab[i*12, 12].unpack('VCCCxV')
break if channel==0
puts "O #{onset}; C #{channel}; P #{pitch}; V #{velocity}; D #{duration}" if DEBUG puts "O #{onset}; C #{channel}; P #{pitch}; V #{velocity}; D #{duration}" if DEBUG
if channel==176 or channel==179 if channel==176 or channel==179
pitch = VL::NoPitch pitch = VL::NoPitch
@ -376,6 +380,7 @@ nextMeas = 0
melo = nil melo = nil
lastNote = nil lastNote = nil
lastOnset = 0 lastOnset = 0
maxMeas = 0
while RAWNOTES.size > 0 || CHORDS.size > 0 while RAWNOTES.size > 0 || CHORDS.size > 0
if note = RAWNOTES.shift if note = RAWNOTES.shift
if note[0] > nextMeas if note[0] > nextMeas
@ -409,6 +414,9 @@ while RAWNOTES.size > 0 || CHORDS.size > 0
lastOnset = note[0] lastOnset = note[0]
lastNote = {'pitch' => note[1], 'tied' => note[2] ? VL::TiedWithPrev : 0} lastNote = {'pitch' => note[1], 'tied' => note[2] ? VL::TiedWithPrev : 0}
melo.push(lastNote) melo.push(lastNote)
if note[1] != VL::NoPitch
maxMeas = measNo-1
end
else else
if lastNote if lastNote
lastDur = VL::Fract.new(nextMeas-lastOnset, 48) lastDur = VL::Fract.new(nextMeas-lastOnset, 48)
@ -427,7 +435,13 @@ while RAWNOTES.size > 0 || CHORDS.size > 0
end end
if measNo > 2 && CHORDS.size > 0 && !meas['chords'] if measNo > 2 && CHORDS.size > 0 && !meas['chords']
meas['chords'] = chords = [] meas['chords'] = chords = []
time = VL::Fract.new(PROP['timeNum'], PROP['timeDenom'])
(0..3).each do |i| (0..3).each do |i|
if i==2 && time > VL::Fract.new(4,4)
extra = time - VL::Fract.new(4,4)
chords.push({'pitch' => VL::NoPitch,
'durNum' => extra.num, 'durDenom' => extra.denom})
end
pitch = CHORDS.shift pitch = CHORDS.shift
steps = STEPS.shift steps = STEPS.shift
root = ROOTS.shift root = ROOTS.shift
@ -436,13 +450,11 @@ while RAWNOTES.size > 0 || CHORDS.size > 0
root ||= VL::NoPitch root ||= VL::NoPitch
chords.push({'pitch' => pitch, 'steps' => steps, 'root' => root, chords.push({'pitch' => pitch, 'steps' => steps, 'root' => root,
'durNum' => 1, 'durDenom' => 4}) 'durNum' => 1, 'durDenom' => 4})
if pitch != VL::NoPitch
maxMeas = measNo-1
end end
time = VL::Fract.new(PROP['timeNum'], PROP['timeDenom']) end
if time > VL::Fract.new(4,4) if time < VL::Fract.new(3,4)
extra = time - VL::Fract.new(4,4)
chords.push({'pitch' => VL::NoPitch,
'durNum' => time.num, 'durDenom' => time.denom})
elsif time < VL::Fract.new(3,4)
chords.pop chords.pop
chords.pop chords.pop
elsif time < VL::Fract.new(4,4) elsif time < VL::Fract.new(4,4)
@ -451,6 +463,7 @@ while RAWNOTES.size > 0 || CHORDS.size > 0
end end
end end
MEAS[maxMeas+1..-1] = nil
adjust = 0 adjust = 0
if MEAS.size > 1 && MEAS[0]['melody'].size == 1 && if MEAS.size > 1 && MEAS[0]['melody'].size == 1 &&
MEAS[0]['melody'][0]['pitch'] == VL::NoPitch MEAS[0]['melody'][0]['pitch'] == VL::NoPitch