def parse(self, jpegdata):
self._jpegdata = jpegdata
reader = IO_Bit()
reader.input(jpegdata)
while reader.hasNextData(2):
chunk = self._parseChunk(reader)
self.chunks.append(chunk)
def build(self, opts = {}):
writer = IO_Bit()
self._buildChunk(writer, self.header, opts)
for track in self.tracks:
self._buildChunk(writer, track, opts)
if self.xfinfo:
self._buildChunk(writer, self.xfinfo, opts)
if self.xfkaraoke:
self._buildChunk(writer, self.xfkaraoke, opts)
return writer.output()
def parse(self, mididata):
self._mididata = mididata
reader = IO_Bit()
reader.input(mididata)
while reader.hasNextData(4):
chunk = self._parseChunk(reader)
if chunk['type'] == b'MThd':
self.header = chunk
elif chunk['type'] == b'MTrk':
self.tracks.append(chunk)
elif chunk['type'] == b'XFIH':
self.xfinfo = chunk
elif chunk['type'] == b'XFKM':
self.xfkaraoke = chunk
else:
sys.stderr.write("Can't parse chunk.")
break
def _buildChunk(self, writer, chunk, opts):
type = chunk['type']
writerChunk = IO_Bit()
if type == 'MThd':
self._buildChunkHeader(writerChunk, chunk['header'], opts)
elif type == 'MTrk':
self._buildChunkTrack(writerChunk, chunk['track'], opts)
elif type == 'XFIH':
self._buildChunkXFInfo(writerChunk, chunk['xfinfo'], opts)
elif type == 'XFKM':
self._buildChunkXFKaraoke(writerChunk, chunk['xfkaraoke'], opts)
else:
raise Exception("Unknown chunk (type=type)\n")
chunkData = writerChunk.output()
length = len(chunkData)
writer.putData(type , 4)
writer.putUI32BE(length)
writer.putData(chunkData, length)
def dump(self, fp = sys.stdout, opts = {}):
if ('hexdump' in opts) and opts['hexdump']:
bitio = IO_Bit()
bitio.input(self._mididata)
fp.write("HEADER:\n")
for key, value in self.header['header'].items():
fp.write(" {0}: {1}\n".format(key, value))
if ('hexdump' in opts) and opts['hexdump']:
bitio.hexdump(0, self.header['length'] + 8)
xfkaraoke_with_track = {}
for idx, value in enumerate(self.tracks):
xfkaraoke_with_track["{0}".format(idx)] = value;
if not self.xfkaraoke is None:
xfkaraoke_with_track["karaoke"] = self.xfkaraoke
xfkaraoke_with_track["karaoke"]["track"] = self.xfkaraoke["xfkaraoke"]
for idx, track in xfkaraoke_with_track.items():
scaleCharactors = ['C','C#','D','D#','E','F','F#','G','G#','A','A#','B']
fp.write("TRACK[{0}]:\n".format(idx))
if ('hexdump' in opts) and opts['hexdump']:
bitio.hexdump(track['_offset'], 8)
for idx2, chunk in enumerate(track['track']):
fp.write(" [{0}:".format(idx2))
meta_event_type = -1
for key, value in chunk.items():
if key == 'EventType':
if value < 0xFF:
eventname = self.event_name[value]
else:
eventname = "Meta Event"
fp.write(" {0}:{1}({2}),".format(key, value, eventname))
elif key == 'MetaEventType':
meta_event_type = value
if value in self.meta_event_name:
eventname = self.meta_event_name[value]
fp.write(" {0}:{1}({2}),".format(key, value, eventname))
else:
fp.write(" {0}:{1},".format(key, value))
elif key == 'ControllerType':
typename = self.controller_type_name[value]
fp.write(" {0}:{1}({2}),".format(key, value, typename))
elif key == 'SystemEx' or key == 'SystemExCont' or key == 'MetaEventData':
fp.write(" {0}:".format(key))
dataLen = len(value)
if key == 'MetaEventData':
if meta_event_type == 0x05:
fp.write(value.decode('SJIS'))
elif meta_event_type == 0x07:
fp.write(value)
fp.write("(")
i = 0
while i < dataLen:
fp.write("{:02x}".format(ord(value[i:i+1])))
i += 1
fp.write(")")
elif key == 'NoteNumber':
noteoct = math.floor(value / 12)
notekey = scaleCharactors[value % 12]
fp.write(" {:s}:{:d}({:s}{:.0f}),".format(key, value, notekey, noteoct))
else:
if (key[0:1] != '_') or (('verbose' in opts) and opts['verbose']):
fp.write(" {0}:{1},".format(key, value))
fp.write("\n")
if ('hexdump' in opts) and opts['hexdump']:
bitio.hexdump(chunk['_offset'], chunk['_length'])
