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|
# midiIn.py
"""
This module is an integeral part of the program
MMA - Musical Midi Accompaniment.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Bob van der Poel <bob@mellowood.ca>
"""
from . import gbl
import MMA.file
import MMA.debug
from MMA.common import *
from MMA.alloc import trackAlloc
from MMA.readmidi import MidiData
from MMA.midiM import packBytes
### FIXME ... some truly ugly code follows!!!
######################################################
## Main function, called from parser.
def midiinc(ln):
""" Include a MIDI file into MMA generated files. """
filename = ''
doLyric = False
doText = False
channels = []
transpose = None
stripSilence = -1 # Important! Don't use True or 1 since positive # are option
report = False
istart = 0 # istart/end are in ticks
iend = 0xffffff # but are set in options in Beats
insertOffset = 0 # where in the current stream to insert (like BeatAdjust)
verbose = False
octAdjust = 0
velAdjust = 100
ignorePC = True # ignore imported PC commands before insert point
stretch = None
notopt, ln = opt2pair(ln)
if notopt:
error("MidiInc: Expecting cmd=opt pairs, not '%s'." % ' '.join(notopt))
for cmd, opt in ln:
cmd = cmd.upper()
if cmd == 'FILE':
filename = MMA.file.fixfname(opt)
elif cmd == 'VOLUME':
velAdjust = stoi(opt)
elif cmd == 'OCTAVE':
octAdjust = stoi(opt)
if octAdjust < -4 or octAdjust > 4:
error("MidiInc: 'Octave' adjustment must be -4 to 4, not %s" % opt)
octAdjust *= 12
elif cmd == 'TRANSPOSE':
transpose = stoi(opt)
if transpose < -24 or transpose > 24:
error("MidiInc: 'Transpose' must be -24 to 24, not %s" % opt)
elif cmd == 'START':
istart = stotick(opt, 'B', "MidiInc Start: '%s' is not recognized." % opt)
if istart < 0:
error("MidiInc: 'Start' must be > 0.")
elif cmd == 'END':
iend = stotick(opt, 'B', "MidiInc End: '%s' is not recognized." % opt)
if iend < 0:
error("MidiInc: 'End' must be > 0.")
elif cmd == 'OFFSET':
insertOffset = stotick(opt, 'B', "MidiInc Offset: '%s' is not recognized." % opt)
if gbl.tickOffset + insertOffset < 0:
error("MidiInc: 'Offset' cannot point before start.")
elif cmd == 'TEXT':
doText = getTF(opt, "MidiInc 'Text'")
elif cmd == 'LYRIC':
doLyric = getTF(opt, "MidiInc 'Lyric'")
elif cmd == "REPORT":
report = getTF(opt, "MidiInc 'Report'")
elif cmd == "VERBOSE":
verbose = getTF(opt, "MidiInc 'Verbose'")
elif cmd == "STRIPSILENCE":
opt = opt.upper()
if opt in ("OFF", 'FALSE', '0'):
stripSilence = False
elif opt in ("TRUE", "ON"): # this is the default
stripSilence = -1 # Don't use TRUE, positive values are important
else:
stripSilence = stoi(opt, "MIdiInc StripSilence= expecting "
"'value', 'On' or 'Off', not %s" % opt)
elif cmd == "IGNOREPC":
ignorePC = getTF(opt, "MidiInc 'IgnorePC'")
elif cmd == "STRETCH":
v = stof(opt)
if v < 1 or v > 500:
error("MidiInc: 'Stretch' range of 1 to 500, not %s." % opt)
stretch = v/100.
# If none of the above matched a CMD we assume that it is
# a trackname. Keep this as the last test!
else:
trackAlloc(cmd, 0)
if not cmd in gbl.tnames:
error("MidiInc: %s is not a valid MMA track" % cmd)
opt = opt.split(',')
riffmode = 0
printriff = 0
ch = None
for o in opt:
o = o.upper()
if o == 'RIFF':
riffmode = 1
elif o == 'SEQUENCE':
riffmode = 2
elif o == 'PRINT':
printriff = 1
if not riffmode:
riffmode = 1
else:
if ch is not None:
error("MidiInc: Only one channel assignment per track.")
ch = stoi(o)
if ch < 1 or ch > 16:
error("MidiInc: MIDI channel for import must be 1..16, not %s" % ch)
channels.append((cmd, ch-1, riffmode, printriff))
# If transpose was NOT set, use the global transpose value
# Note special riff value as well. Need to double adjust since
# the riff import will do its own adjustment.
# this needs to be done BEFORE reading the midi file
if transpose is None:
transpose = gbl.transpose
riffTranspose = -gbl.transpose
else:
riffTranspose = 0
octAdjust += transpose # this takes care of octave and transpose
mf = MidiData()
mf.octaveAdjust = octAdjust
mf.velocityAdjust = velAdjust
mf.ignorePC = ignorePC
try:
mf.readFile(filename)
except RuntimeError as e:
error("MidiInc: %s" % e)
if mf.beatDivision != gbl.BperQ:
warning("MIDI file '%s' tick/beat of %s differs from MMA's "
"%s. Will try to compensate" %
(filename, mf.beatDivision, gbl.BperQ))
mf.adjustBeats( gbl.BperQ / float(mf.beatDivision))
if report or verbose: # try to be helpful
print("MIDI File %s successfully read." % filename)
print("Total Text events: %s" % len(mf.textEvents))
print("Total Lyric events: %s" % len(mf.lyricEvents))
print('\n')
for ch in sorted(mf.events.keys()):
if not mf.events[ch]:
continue
if verbose and not report: # in verbose mode only list info for tracks we're using
doit = 0
for z in channels:
if z[1] == ch:
doit = 1
break
if not doit:
continue
fnote = fevent = 0xffffff
ncount = 0
for ev in mf.events[ch]:
delta = ev[0]
if delta < fevent:
fevent = delta
if ev[1] >> 4 == 0x9:
if delta < fnote:
fnote = delta
if ev[3]:
ncount += 1
msg = ["Channel %2s: First event %-8s" % (ch+1, fevent)]
if ncount:
msg.append("First Note %-8s Total Notes %-4s" % (fnote, ncount))
print(' '.join(msg))
if report:
print("\nNo data generated!")
sys.exit(0)
if not channels:
if doLyric or doText:
warning("MidiInc: no import channels specified, "
"only text or lyrics imported")
else:
error("MidiInc: A channel to import and a destination "
"track must be specified")
if (istart >= iend) or (istart < 0) or (iend < 0):
error("MidiInc: Range invalid, start=%s, end=%s" % (istart, iend))
if MMA.debug.debug:
dPrint("MidiInc: File=%s, Volume=%s, Octave=%s, Transpose=%s, Lyric=%s, "
"Text=%s, Range=%sT..%sT StripSilence=%sT Offset=%sT Verbose=%s"
% (filename, velAdjust, octAdjust, transpose, doLyric, doText,
istart, iend, stripSilence, insertOffset, verbose))
msg = []
for t, ch, riffmode, riffprint in channels:
o = ''
if riffmode == 1:
o = ',riff'
elif riffmode == 2:
o = ',sequence'
elif printriff:
o += ',print'
msg.append("MidiInc: Channel %s-->%s%s" % (ch+1, t, o))
dPrint(' '.join(msg))
if stretch:
if verbose:
print("Applying stretch to all events. Deltas will be multiplied by %s" % stretch)
for tr in mf.events:
for e in mf.events[tr]:
e[0] = int(e[0] * stretch) # e[0] is the offset
for e in mf.textEvents:
e[0] = int(e[0] * stretch)
for e in mf.lyricEvents:
e[0] = int(e[0] * stretch)
# Midi file parsed, add selected events to mma data
if stripSilence == False:
if verbose:
print("Firstnote offset was %s. Being reset to start of file by StripSilence=Off."
% mf.firstNote)
mf.firstNote = 0
if verbose:
print("First note offset: %s" % mf.firstNote)
if doText:
inst = 0
disc = 0
if verbose:
print("Scanning %s textevents." % len(mf.textEvents))
for tm, tx in mf.textEvents:
delta = tm-mf.firstNote
if delta >= istart and delta <= iend:
gbl.mtrks[0].addText(gbl.tickOffset + insertOffset + delta, tx)
inst += 1
else:
disc += 1
if MMA.debug.debug:
dPrint("MidiInc text events: %s inserted, %s out of range." % (inst, disc))
if doLyric:
inst = 0
disc = 0
if verbose:
print("Scanning %s LyricEvents." % len(mf.lyricEvents))
for tm, tx in mf.lyricEvents:
delta = tm-mf.firstNote
if delta >= istart and delta <= iend:
gbl.mtrks[0].addLyric(gbl.tickOffset + insertOffset + delta, tx)
inst += 1
else:
disc += 1
if MMA.debug.debug:
dPrint("MidiInc lyric events: %s inserted, %s out of range." % (inst, disc))
for n, c, riffmode, printriff in channels:
if not len(mf.events[c]):
warning("No data to assign from imported channel %s to track %s" % (c+1, n))
inst = 0
disc = 0
for tr, ch, riffmode, printriff in channels:
onNotes = []
if gbl.tnames[tr].disable: # skip if disabled track
if verbose:
print("Skipping import of channel %s since track %s is disabled."
% (ch, tr))
continue
t = gbl.tnames[tr]
if not t.channel:
t.setChannel()
if riffmode:
riff = []
if t.vtype not in ('MELODY', 'SOLO'):
error("MidiInc: Riff only works on Melody/Solo tracks, not '%s'." % t.name)
t.clearPending()
if t.voice[0] != t.ssvoice:
gbl.mtrks[t.channel].addProgChange(gbl.tickOffset + insertOffset,
t.voice[0], t.ssvoice)
channel = t.channel
track = gbl.mtrks[channel]
if verbose or 1:
print("Parsing imported file. Channel=%s Track=%s MIDI Channel=%s"
% (ch, tr, channel))
if len(mf.events[ch]):
print(" Total events: %s; Event range: %sT %sT; Start/End Range: %sT %sT"
% (len(mf.events[ch]), mf.events[ch][0][0],
mf.events[ch][-1][0], istart, iend))
else:
print("No events in Channel %s" % ch)
# If we're processing midi voice changes (ignorePC=False) and there
# are events BEFORE the first note, we need to insert
# them before the notes. We put them all at the start offset.
if ignorePC==False:
for ev in mf.events[ch]:
if ev[0] > mf.firstNote:
break
if ev[1] >> 4 == 0xc:
track.addToTrack(gbl.tickOffset + insertOffset,
packBytes(ev[1] | channel-1, *ev[2:]))
inst += 1
disc -= 1
for ev in mf.events[ch]:
delta = ev[0]-mf.firstNote
if delta >= istart and delta <= iend:
if riffmode:
offset = delta-istart
x = ev[1] >> 4
if x != 0x09 and x != 0x08: # skip non note events
continue
pitch = ev[2]
velocity = ev[3]
if x == 0x8:
velocity = 0
riff.append([offset, pitch, velocity])
else:
offset = gbl.tickOffset + insertOffset + (delta-istart)
# add note on/off, key pressure, etc.
track.addToTrack(offset, packBytes(ev[1] | channel-1, *ev[2:]))
# Track on/off events to avoid stuck midi notes.
x = ev[1] >> 4
if x == 0x09 and ev[3] and ev[2] not in onNotes:
onNotes.append(ev[2]) # append this pitch to onNotes
if (x == 0x09 and not ev[3] or x == 0x08) and (ev[2] in onNotes):
onNotes.remove(ev[2]) # remove this as being ON
inst += 1
else:
disc += 1
if onNotes:
for x in onNotes:
track.addToTrack(offset, packBytes(0x90 | channel-1, [x,0]))
warning("MidiINC: Stuck MIDI note(s) '%s' turned off in %s." %
(', '.join([str(x) for x in onNotes]), tr))
if riffmode:
evlist = createRiff(riff, tr, riffTranspose)
if riffmode == 2:
txt = []
for a in sorted(evlist):
if printriff and riffmode == 1:
print("%s Riff %s" % (tr, evlist[a]))
elif riffmode == 2: # sequence mode, create sequence line and push into input
txt.append("{%s}" % evlist[a])
else: # riffmode==1, printriff=0 - just add to the riff stack
gbl.tnames[tr].setRiff(evlist[a])
if riffmode == 2 and txt:
if printriff:
print("%s Sequence %s" % (tr, ' '.join(txt)))
else:
MMA.sequence.trackSequence(tr, txt)
if MMA.debug.debug:
dPrint("MidiInc events: %s inserted, %s out of range." % (inst, disc))
def createRiff(riff, tname, riffTranspose):
# convert list of ON values to durations. We need to
# look at each event and, if an on-event, search forward
# for an off. Subtract 2 times and save in new list.
if gbl.tnames[tname].riff:
error("MidiInc: Data already pending for %s." % tname)
missed = 0
events = []
riff.sort()
for i in range(len(riff)):
duration = None
offset, pitch, velocity = riff[i]
if velocity:
for t in range(i, len(riff)):
off1, pitch1, vel1 = riff[t]
if not vel1 and pitch1 == pitch:
duration = off1 - offset
break
if duration:
if riffTranspose:
pitch += riffTranspose
while pitch > 127:
pitch -= 12
while pitch < 0:
pitch += 12
events.append([offset, duration, pitch, velocity])
else:
missed += 1
if missed:
warning("MidiInc Riff: conversion missed %s notes in track %s" % (missed, tname))
# We have a list of events: [offset, duration, pitch, velocity]...
# create yet another list with the events put into bars. Easier
# this time to use a dict
tickBar = gbl.barLen
bars = {}
for offset, duration, pitch, velocity in events:
b = (offset // tickBar)
if not b in bars:
bars[b] = ''
if int(offset % tickBar) + duration > gbl.barLen:
eol = "~;"
else:
eol = ";"
bars[b] += "<Offset=%s> %st %s/%s %s" % \
(int(offset % tickBar), duration, pitch, velocity, eol)
# Ensure that all bars in the riff pushback data have something.
# Otherwise the MIDI gets out of sync with the chords. This happens
# when there are rest bars in the imported data. We just step though
# and create mma rest bars for the missing ones.
if not len(bars):
bars = {0: "4r;"}
for b in range(0, sorted(bars.keys())[-1], 1):
if not b in bars:
bars[b] = "4r;"
while bars[b].count('~') > 1:
bars[b] = bars[b].replace('~', '', 1)
return bars
|
