def CreateMidifile(
input_file_name,
data,
output_file,
options):
size = len(data)
page_size = options.page_size
delay = options.delay
_, input_file_name = os.path.split(input_file_name)
comments = [
'Warning: contains OS data!',
'Created from %(input_file_name)s' % locals(),
'Size: %(size)d' % locals(),
'Page size: %(page_size)d' % locals(),
'Delay: %(delay)d ms' % locals()]
m = midifile.Writer()
if options.write_comments:
for comment in comments:
m.AddTrack().AddEvent(0, midifile.TextEvent(comment))
t = m.AddTrack()
t.AddEvent(0, midifile.TempoEvent(120.0))
page_size *= 2 # Converts from words to bytes
# The first SysEx block must not start at 0! Sequencers like Logic play the
# first SysEx block everytime stop/play is pressed.
time = 1
syx_data = []
for i in xrange(0, size, page_size):
block = ''.join(map(chr, data[i:i+page_size]))
padding = page_size - len(block)
block += '\x00' * padding
mfr_id = options.manufacturer_id if not \
options.force_obsolete_manufacturer_id else '\x00\x21\x02'
event = midifile.SysExEvent(
mfr_id,
struct.pack('>h', options.device_id),
options.update_command + midifile.Nibblize(block))
t.AddEvent(time, event)
syx_data.append(event.raw_message)
# ms -> s -> beats -> ticks
time += int(delay / 1000.0 / 0.5 * 96)
event = midifile.SysExEvent(
mfr_id,
struct.pack('>h', options.device_id),
options.reset_command)
t.AddEvent(time, event)
syx_data.append(event.raw_message)
f = file(output_file, 'wb')
if options.syx:
f.write(''.join(syx_data))
else:
m.Write(f, format=1)
f.close()
def CreateMidifile(input_file_name, data, output_file, options):
size = len(data)
_, input_file_name = os.path.split(input_file_name)
comments = [
'Contains wavetable data for Shruthi-1',
'Created from %(input_file_name)s' % locals(),
'Size: %(size)d' % locals()
]
m = midifile.Writer()
if options.write_comments:
for comment in comments:
m.AddTrack().AddEvent(0, midifile.TextEvent(comment))
t = m.AddTrack()
t.AddEvent(0, midifile.TempoEvent(120.0))
event = midifile.SysExEvent(
options.manufacturer_id, options.device_id,
options.update_command + midifile.Nibblize(data))
t.AddEvent(1, event)
f = file(output_file, 'wb')
if options.syx:
f.write(''.join(event.raw_message))
else:
m.Write(f, format=1)
f.close()