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#IV to arduino array computer
import xml.etree.ElementTree as ET
import sys
iv = ET.parse(sys.argv[1]).getroot()
streams = iv.findall('./streams/stream[@type="ns"]')
if len(streams) > 3:
print 'WARNING: Too many streams'
for i in xrange(min(3, len(streams))):
stream = streams[i]
notes = stream.findall('note')
# First, the header
sys.stdout.write('const uint16_t track%d[] PROGMEM = {\n'%(i,))
# For the first note, write out the delay needed to get there
if notes[0].get('time') > 0:
sys.stdout.write('%d, 0,\n'%(int(float(notes[0].get('time'))*1000),))
for idx, note in enumerate(notes):
sys.stdout.write('%d, FREQ(%d),\n'%(int(float(note.get('dur'))*1000), int(440.0 * 2**((int(note.get('pitch'))-69)/12.0))))
if idx < len(notes)-1 and float(note.get('time'))+float(note.get('dur')) < float(notes[idx+1].get('time')):
sys.stdout.write('%d, 0,\n'%(int(1000*(float(notes[idx+1].get('time')) - (float(note.get('time')) + float(note.get('dur'))))),))
# Finish up the stream
sys.stdout.write('};\n\n')
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