katana_convert

#!/usr/bin/python3
# -*-python-*-

import sys
import os
import mido
import time
import math

from panel_preset import PanelPreset
from panel_preset_old import PanelPresetOld

from katana import Katana
from range import Range

mido.set_backend('mido.backends.rtmidi')

def load_presets( filename, presets ):
    if os.path.isfile( filename ):
        # Read all presets
        with open(filename,'r') as fh:
            for rec in PanelPresetOld.get_from_file( fh ):
                presets[rec.id] = rec

# Rename existing data file and persist current
# live data to disk
def save_presets( filename, presets ):
    try:
        if os.path.isfile( filename ):
            os.rename( filename, filename + ".bak" )

        with open(filename,'w') as outfh:
            for rec in presets.values():
                rec.serialize( outfh )
    except OSError:
        syslog.syslog( "Error saving presets: " + OSError )
        # sys.exit( 1 )

# Capture and persist a new preset (overwrites existing)
def capture_preset( katana, program, presets ):
    # Read amp into rec using controller PC program value as id
    rec = PanelPreset.read_from_amp( katana, program, rangeObj )
    presets[ rec.id ] = rec



################################ (main) ##################################

args = sys.argv
if len(args) < 5:
    print( "Usage: katana_convert <amplifier_port> <amp_channel> <old_preset_file> <new_preset_file>\n" )
    print( "       Ex:\n" )
    print( "          bridge.py \"KATANA:KATANA MIDI 1 20:0\" 1 old_presets.txt new_presets.txt\n" )
    sys.exit( 1 )

# Load parameter metadata
scriptdir = os.environ.get('PYTHONPATH')
if scriptdir == None:
    scriptdir = os.path.dirname(os.path.abspath(__file__))

datadir = scriptdir + '/parameters/'

rangeObj = Range( datadir + 'ranges.json' )

# Amp interface
amp = args[1]

# Amp MIDI port 
try:
    amp_channel = int( args[2] ) - 1
except ValueError:
    print( "Arg4 must be numeric!\n" )
    sys.exit( 1 )

katana = Katana( amp, amp_channel, clear_input=True )

# Preset data
old_preset_file = args[3]
new_preset_file = args[4]

old_presets = dict()
new_presets = dict()

# Load old presets from file
print( "Load old preset file" )
load_presets( old_preset_file, old_presets )

for program, presetObj in old_presets.items():
    print( "Restore old preset %d to amp" % program )
    presetObj.transmit( katana )
    time.sleep( 0.5 )
    print( "  Capture patch area into new preset object" )
    capture_preset( katana, program, new_presets )

print( "Save new preset file" )
save_presets( new_preset_file, new_presets )

print( "Done" )