Initial version
This commit is contained in:
Gergely Polonkai
commit
ff4dbf3095
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/venv/
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# -*- coding: utf-8
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import argparse
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import sys
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import os
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import shutil
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from midiutil.MidiFile import MIDIFile
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from StringIO import StringIO
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from time import sleep
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from git import Repo
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from git.objects.blob import Blob
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from git.exc import InvalidGitRepositoryError
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# The original scale was: [60, 62, 64, 65, 67, 69, 71]
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notes = [68, 69, 71, 72, 74, 76, 77]
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notecount = len(notes)
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def gen_history(log, commit):
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counter = 0
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to_process = [commit]
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while len(to_process) > 0:
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counter += 1
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if counter % 500 == 0:
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print("Done with {} commits".format(counter))
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commit = to_process.pop()
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if not commit in log:
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log.append(commit)
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to_process += commit.parents
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def gen_volume(deletions, insertions, deviation=10):
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return max(
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deviation,
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min(255 - deviation,
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127 - deletions + insertions))
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def sha_to_note(sha):
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note_num = reduce(lambda res, digit: res + int(digit, 16),
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list(str(sha)), 0) % notecount
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return notes[note_num]
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def get_file_sha(commit, file_name):
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elements = file_name.split(os.sep)
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t = commit.tree
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while True:
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try:
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t = t[elements.pop(0)]
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except KeyError:
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# The file has been deleted
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return '0000000000000000000000000000000000000000'
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if isinstance(t, Blob):
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break
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return t.hexsha
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def gen_note(commit):
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stat = commit.stats
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note = sha_to_note(commit.hexsha)
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file_notes = []
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for file_name, file_stat in stat.files.items():
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file_notes.append({
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'note': sha_to_note(get_file_sha(commit, file_name)) - 12,
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'volume': gen_volume(file_stat['deletions'],
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file_stat['insertions'],
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deviation=10),
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})
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return {
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'commit_note': sha_to_note(commit.hexsha) - 24,
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'commit_volume': gen_volume(stat.total['deletions'],
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stat.total['insertions'],
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deviation=20),
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'file_notes': file_notes,
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}
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class MemMIDI(MIDIFile):
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def __init__(self, tracks=None):
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if tracks is None:
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tracks = [("Sample Track", 120)]
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self.track_count = len(tracks)
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MIDIFile.__init__(self, self.track_count)
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self.mem_file = StringIO()
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if tracks is None:
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self.addTrackName(0, 0, "Sample Track")
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self.addTempo(0, 0, 120)
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else:
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for idx, (name, tempo) in enumerate(tracks):
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self.addTrackName(idx, 0, name)
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self.addTempo(idx, 0, tempo)
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def writeMem(self):
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self.writeFile(self.mem_file)
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def exportFile(self, filename):
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with open(filename, 'w') as f:
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self.mem_file.seek(0)
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shutil.copyfileobj(self.mem_file, f)
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description='Voice of a Repo')
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parser.add_argument('repository', type=str)
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parser.add_argument('--branch',
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type=str,
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default='master',
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help="The branch to generate sound for [master]")
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parser.add_argument('--file',
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type=str,
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default=None,
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help="Save the generated MIDI sequence to this file")
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parser.add_argument('--play',
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action='store_true',
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default=False,
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help="Play the generated file (requires pygame with " +
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"MIDI support)")
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parser.add_argument('--verbose',
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action='store_true',
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default=False,
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help="Print messages during execution")
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args = parser.parse_args()
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try:
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repo = Repo(args.repository)
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except InvalidGitRepositoryError:
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print("{} is not a valid Git repository".format(
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os.path.abspath(args.repository)))
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sys.exit(1)
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try:
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branch = repo.heads[args.branch]
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except IndexError:
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print("Branch '{}' does not exist in this repo".format(args.branch))
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sys.exit(1)
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orig_log = []
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if args.verbose:
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print("Generating Git log…")
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gen_history(orig_log, branch.commit)
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if args.verbose:
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print("Sorting commits…")
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orig_log.sort(key=lambda commit: commit.authored_date)
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if args.verbose:
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print("Generating MIDI data…")
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log = map(gen_note, orig_log)
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if args.verbose:
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print("Creating MIDI…")
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MyMIDI = MemMIDI()
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track = 0
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time = 0
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log_channel = 0
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decor_channel = 1
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# Duration of one note
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duration = 0.3
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MyMIDI.addProgramChange(track, log_channel, 0, 104)
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MyMIDI.addProgramChange(track, decor_channel, 0, 115)
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# WRITE THE SEQUENCE
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for section in log:
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section_len = len(section['file_notes']) * duration
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# Add a long note
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MyMIDI.addNote(track, log_channel,
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section['commit_note'], time,
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section_len, section['commit_volume'])
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for i, file_note in enumerate(section['file_notes']):
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MyMIDI.addNote(track, decor_channel,
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file_note['note'], time + i * duration,
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duration, file_note['volume'])
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time += section_len
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MyMIDI.writeMem()
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if args.file:
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if args.verbose:
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print("Saving file to {}".format(args.file))
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MyMIDI.exportFile(args.file)
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if args.play:
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if args.verbose:
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print("Playing!")
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# Import pygame stuff here
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import pygame
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import pygame.mixer
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# PLAYBACK
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pygame.init()
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pygame.mixer.init()
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MyMIDI.mem_file.seek(0)
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pygame.mixer.music.load(MyMIDI.mem_file)
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pygame.mixer.music.play()
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while pygame.mixer.music.get_busy():
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sleep(1)
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@ -0,0 +1,23 @@
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start: 60
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steps: [0, 2, 2, 1, 2, 2, 2, 1]
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Next octave: +12
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Notes used in PI music:
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83 o
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81 ------------------------------------------o------
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79 #o
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77 --------------------------------o----------------
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76 o
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74 --------------------- o -------------------------
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72 o
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71 ----------- o -----------------------------------
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69 o
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67 - #o --------------------------------------------
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65
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64 -------------------------------------------------
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62
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60 -------------------------------------------------
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0 1 2 3 4 5 6 7 8 9
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