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108 lines
2.6 KiB
Python
108 lines
2.6 KiB
Python
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# alloc.py
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"""
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This module is an integeral part of the program
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MMA - Musical Midi Accompaniment.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Bob van der Poel <bob@mellowood.ca>
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"""
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import MMA.patChord
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import MMA.patWalk
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import MMA.patBass
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import MMA.patDrum
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import MMA.patScale
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import MMA.patArpeggio
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import MMA.patSolo
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import MMA.patAria
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import MMA.grooves
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import gbl
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from MMA.common import *
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trkClasses = {
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'BASS' : MMA.patBass.Bass,
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'CHORD' : MMA.patChord.Chord,
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'ARPEGGIO' : MMA.patArpeggio.Arpeggio,
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'SCALE' : MMA.patScale.Scale,
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'DRUM' : MMA.patDrum.Drum,
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'WALK' : MMA.patWalk.Walk,
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'MELODY' : MMA.patSolo.Melody,
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'SOLO' : MMA.patSolo.Solo,
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'ARIA' : MMA.patAria.Aria
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}
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def trackAlloc(name, err):
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""" Check existence of track and create if possible.
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If 'err' is set, the function will 'error out' if
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it's not possible to create the track. Otherwise,
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it is content to return without creation taking place.
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"""
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# If the track already exists, just return
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if name in gbl.tnames:
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return
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# Get the trackname. Can be just a type, or type-name.
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if '-' in name:
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base, ext = name.split('-',1)
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else:
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ext = None
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base = name
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""" See if there is a track class 'base'. If there is, then
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'f' points to the initialization function for the class.
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If not, we either error (err==1) or return (err==0).
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"""
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try:
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f = trkClasses[base]
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except:
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if err:
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error("There is no track class '%s' for trackname '%s'" % (base, name) )
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else:
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return
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# Now attempt to allocate the track
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gbl.tnames[name] = newtk = f(name)
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# Set the sequence size of new track
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newtk.setSeqSize()
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# Update current grooves to reflect new track.
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for slot in MMA.grooves.glist.keys():
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newtk.saveGroove(slot)
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if gbl.debug:
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print "Creating new track", name
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return
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