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Refactor GUI and GitMIDI into separate files

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This commit is contained in:
Gergely Polonkai 2016-06-10 00:31:40 +02:00
parent 20290a882f
commit 07001dbf91
4 changed files with 790 additions and 775 deletions
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718
git-sound.py
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@ -11,32 +11,15 @@ import sys
import os
try:
import pygame
import pygame.mixer
PYGAME_AVAILABLE = True
from git_sound.gui import GitSoundWindow
GUI_AVAILABLE = True
except ImportError:
PYGAME_AVAILABLE = False
GUI_AVAILABLE = False
try:
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
from gi.repository import GLib
GTK_AVAILABLE = True
except ImportError:
GTK_AVAILABLE = False
import shutil
from midiutil.MidiFile import MIDIFile
from StringIO import StringIO
from time import sleep
from git import Repo
from git.objects.blob import Blob
from git.exc import InvalidGitRepositoryError
from git_sound.gitmidi import GitMIDI
SCALES = {
'c-major': ('C Major', [60, 62, 64, 65, 67, 69, 71]),
'a-harmonic-minor': ('A Harmonic Minor', [68, 69, 71, 72, 74, 76, 77]),
@ -116,676 +99,42 @@ PROGRAMS = {
}
def get_file_sha(commit, file_name):
"""
Get the SHA1 ID of a file by its name, in the given commit.
"""
elements = file_name.split(os.sep)
tree = commit.tree
while True:
try:
tree = tree[elements.pop(0)]
except (KeyError, IndexError):
# The file has been deleted, return the hash of an empty file
return 'e69de29bb2d1d6434b8b29ae775ad8c2e48c5391'
if isinstance(tree, Blob):
break
return tree.hexsha
class GitSoundWindow(object):
"""
GIU class for git-sound.
"""
def __init__(self):
self.builder = Gtk.Builder()
self.builder.add_from_file('git-sound.ui')
self.win = self.builder.get_object('main-window')
self.play_button = self.builder.get_object('play-button')
self.stop_button = self.builder.get_object('stop-button')
self.vol_spin = self.builder.get_object('vol-spin')
self.program_combo = self.builder.get_object('program-combo')
self.progressbar = self.builder.get_object('generate-progress')
self.branch_combo = self.builder.get_object('branch-combo')
self.statusbar = self.builder.get_object('statusbar')
self.pos_label = self.builder.get_object('position-label')
self.skip_spin = self.builder.get_object('skip-spin')
self.scale_combo = self.builder.get_object('scale-combo')
self.chooser_button = self.builder.get_object('repo-chooser')
self.notelen_spin = self.builder.get_object('notelen-spin')
self.beatlen_spin = self.builder.get_object('beatlen-spin')
self.generate_button = self.builder.get_object('generate-button')
self.save_button = self.builder.get_object('save-button')
self.gitmidi = None
program_store = self.builder.get_object('program-list')
for program_id, program in PROGRAMS.items():
program_store.append([program['name'], program_id])
renderer = Gtk.CellRendererText()
self.program_combo.pack_start(renderer, True)
self.program_combo.add_attribute(renderer, "text", 0)
scale_store = self.builder.get_object('scale-list')
for scale_id, scale in SCALES.items():
scale_store.append([scale[0], scale_id])
renderer = Gtk.CellRendererText()
self.scale_combo.pack_start(renderer, True)
self.scale_combo.add_attribute(renderer, "text", 0)
self.builder.connect_signals({
'read_branches': lambda button: self.read_branches(),
'settings_changed': lambda button: self.settings_changed(),
'generate_repo': lambda button: self.generate_repo(),
'play_midi': lambda button: self.play_midi(),
'stop_midi': lambda button: self.stop_midi(),
'save_midi': lambda button: self.save_midi(),
})
self.win.connect("delete-event", Gtk.main_quit)
def read_branches(self):
"""
Callback for the repository chooser. Upon change, this reads
all the branches from the selected repository.
"""
# Make sure the Play, Stop and Save buttons are disabled
self.gitmidi = None
repo_path = self.chooser_button.get_file().get_path()
self.branch_combo.remove_all()
self.branch_combo.set_button_sensitivity(False)
self.set_buttons_sensitivity(disable_all=True)
try:
repo = Repo(repo_path)
except InvalidGitRepositoryError:
dialog = Gtk.MessageDialog(
self.chooser_button.get_toplevel(),
Gtk.DialogFlags.MODAL,
Gtk.MessageType.ERROR,
Gtk.ButtonsType.OK,
"{} is not a valid Git repository".format(
repo_path))
dialog.connect('response',
lambda dialog, response_id: dialog.destroy())
dialog.run()
return
self.set_status('Opened repository: {}'.format(repo_path))
self.branch_combo.set_button_sensitivity(True)
for head in repo.heads:
self.branch_combo.append_text(head.name)
def set_status(self, text):
"""
Change the status bar text.
"""
self.statusbar.push(self.statusbar.get_context_id("git-sound"), text)
def settings_changed(self):
"""
Callback to use if anything MIDI-related is changed
(repository, branch, scale or program).
"""
self.gitmidi = None
self.set_buttons_sensitivity()
self.stop_midi()
def set_buttons_sensitivity(self, disable_all=False):
"""
Set buttons sensitivity based on different conditions.
It checks if a repository and a branch is selected or if MIDI
data is already generated.
"""
self.stop_button.set_sensitive(False)
if disable_all:
self.generate_button.set_sensitive(False)
self.play_button.set_sensitive(False)
self.save_button.set_sensitive(False)
return
if self.gitmidi is not None:
self.generate_button.set_sensitive(False)
self.play_button.set_sensitive(True)
self.save_button.set_sensitive(True)
return
branch_selected = self.branch_combo.get_active_text() is not None
program_selected = self.program_combo.get_active_id() is not None
scale_selected = self.scale_combo.get_active_id() is not None
if branch_selected and program_selected and scale_selected:
self.generate_button.set_sensitive(True)
self.play_button.set_sensitive(False)
self.save_button.set_sensitive(False)
def generate_repo(self):
"""
Generate repository data for MIDI data.
"""
repo_path = self.chooser_button.get_file().get_path()
branch_selected = self.branch_combo.get_active_text()
program_selected = self.program_combo.get_active_id()
scale_selected = self.scale_combo.get_active_id()
skip = int(self.skip_spin.get_value())
vol_deviation = int(self.vol_spin.get_value())
notelen = self.notelen_spin.get_value()
beatlen = int(self.beatlen_spin.get_value()) or None
self.progressbar.set_fraction(0.0)
self.progressbar.pulse()
self.set_status("Reading commits")
self.gitmidi = GitMIDI(repository=repo_path,
branch=branch_selected,
verbose=False,
scale=SCALES[scale_selected][1],
program=PROGRAMS[program_selected],
volume_range=vol_deviation,
skip=skip,
note_duration=notelen,
max_beat_len=beatlen)
self.set_status("Generating beats")
self.gitmidi.gen_repo_data(callback=self.genrepo_cb)
self.set_status("Generating MIDI")
self.gitmidi.generate_midi(callback=self.genrepo_cb)
self.gitmidi.write_mem()
self.set_buttons_sensitivity(disable_all=False)
def genrepo_cb(self, max_count, current):
"""
Generate repository data. This is called when the user presses
the Generate button.
"""
if max_count is None or current is None:
self.progressbar.pulse()
else:
fraction = float(current) / float(max_count)
self.progressbar.set_fraction(fraction)
# Make sure the progress bar gets updated
Gtk.main_iteration_do(False)
Gtk.main_iteration_do(False)
def update_play_pos(self):
"""
Update playback position label.
"""
if self.gitmidi is None:
return
position = self.gitmidi.get_play_pos()
if position is None:
self.set_status("Stopped")
self.pos_label.set_text("0:00")
self.play_button.set_sensitive(True)
self.stop_button.set_sensitive(False)
return False
position = int(position / 1000)
minutes = int(position / 60)
seconds = position - (minutes * 60)
self.pos_label.set_text("{}:{:02}".format(minutes, seconds))
return True
def play_midi(self):
"""
Start MIDI playback.
"""
self.set_status(u"Playing…")
self.gitmidi.play(track=True)
GLib.timeout_add_seconds(1, self.update_play_pos)
self.play_button.set_sensitive(False)
self.stop_button.set_sensitive(True)
def stop_midi(self):
"""
Stop MIDI playback.
"""
if self.gitmidi is not None:
self.gitmidi.stop()
def __save(self, dialog, response_id):
"""
Do the actual MIDI saving after the user chose a file.
"""
if response_id == Gtk.ResponseType.OK:
save_file = dialog.get_file().get_path()
dialog.destroy()
self.gitmidi.export_file(save_file)
def save_midi(self):
"""
Save MIDI data.
"""
dialog = Gtk.FileChooserDialog(
u"Save As…",
self.win,
Gtk.FileChooserAction.SAVE,
("Save", Gtk.ResponseType.OK))
dialog.set_do_overwrite_confirmation(True)
dialog.connect('response', self.__save)
dialog.run()
def start(self):
"""
Start the GUI.
"""
self.win.show_all()
Gtk.main()
sys.exit(0)
class GitMIDI(MIDIFile):
"""
Class to hold repository data, and MIDI data based on that repository.
"""
LOG_CHANNEL = 0
FILE_CHANNEL = 1
def __setup_midi(self, track_title=None):
"""
Initialise the MIDI file.
"""
if self.__verbose:
print("Preparing MIDI track…")
if track_title is None:
# TODO: Change this to something that connects to the repo
self.addTrackName(0, 0, "Sample Track")
self.addTempo(0, 0, self.__tempo)
if self.__need_commits:
self.addProgramChange(0, self.LOG_CHANNEL,
0, self.__program['commit']['program'])
if self.__need_files:
self.addProgramChange(0, self.FILE_CHANNEL,
0, self.__program['file']['program'])
def __setup_repo(self):
"""
Setup repository and get the specified branch.
"""
if self.__verbose:
print("Analyzing repository…")
repo = Repo(self.__repo_dir)
self.__branch_head = repo.heads[self.__branch].commit
def __init__(self,
repository=None,
branch=None,
verbose=None,
scale=None,
program=None,
volume_range=None,
skip=None,
note_duration=None,
max_beat_len=None,
tempo=None):
MIDIFile.__init__(self, 1)
self.__verbose = verbose or False
self.__written = False
self.__repo_dir = repository or '.'
self.__repo = None
self.__branch = branch or 'master'
self.__branch_head = None
self.__repo_data = None
self.__git_log = []
self.__mem_file = StringIO()
self.__scale = scale
self.__program = program
self.__volume_deviation = min(abs(63 - (volume_range or 107)), 63)
self.__pygame_inited = False
self.__playing = False
self.__skip = skip or 0
self.__note_duration = note_duration or 0.3
self.__max_beat_len = max_beat_len or 10
self.__tempo = tempo or 120
self.__need_commits = self.__program['commit']['program'] is not None
self.__need_files = self.__program['file']['program'] is not None
self.__setup_midi()
self.__setup_repo()
def gen_volume(self, deletions, insertions, modifier):
"""
Generate a volume based on the number of modified lines
(insertions - deletions).
deviation specifies the minimum and maximum volume (minimum is
the value of deviation, maximum is 127 - deviation).
"""
return max(
self.__volume_deviation,
min(127 - self.__volume_deviation,
63 - deletions + insertions + modifier))
def sha_to_note(self, sha):
"""
Calculate note based on an SHA1 hash
"""
note_num = reduce(lambda res, digit: res + int(digit, 16),
list(str(sha)), 0) % len(self.__scale)
return self.__scale[note_num]
def gen_beat(self, commit):
"""
Generate data for a beat based on a commit and its files.
"""
stat = commit.stats
file_notes = []
file_count = 0
for file_name, file_stat in stat.files.items():
file_count += 1
if file_count > self.__max_beat_len:
break
volume_mod = self.__program['file'].get('volume', 0)
file_note = self.sha_to_note(get_file_sha(commit, file_name)) + \
self.__program['file']['octave'] * 12
file_volume = self.gen_volume(file_stat['deletions'],
file_stat['insertions'],
volume_mod)
file_notes.append({
'note': file_note,
'volume': file_volume,
})
volume_mod = self.__program['commit'].get('volume', 0)
commit_note = self.sha_to_note(commit.hexsha) + \
self.__program['commit']['octave'] * 12
commit_volume = self.gen_volume(stat.total['deletions'],
stat.total['insertions'],
volume_mod)
return {
'commit_note': commit_note,
'commit_volume': commit_volume,
'file_notes': file_notes,
}
def gen_repo_data(self, force=False, callback=None):
"""
Populate __repo_data with the Git history data. If force is
False and the repo_data is already calculated, we do not do
anything.
"""
if self.__repo_data and not force:
return
if self.__verbose:
print("Reading repository log…")
self.__repo_data = []
counter = 0
to_process = [self.__branch_head]
while len(to_process) > 0:
counter += 1
# TODO: Make this 500 configurable
if counter % 500 == 0 and self.__verbose:
print("Done with {} commits".format(counter))
current_commit = to_process.pop()
if callback is not None:
callback(None, None)
if current_commit not in self.__repo_data:
self.__repo_data.append(current_commit)
to_process += current_commit.parents
if self.__verbose:
print("{} commits found".format(counter))
print("Sorting commits…")
self.__repo_data.sort(key=lambda commit: commit.authored_date)
if self.__verbose:
print("Generating MIDI data…")
self.__git_log = []
current_commit = 0
commits_to_process = self.__repo_data[self.__skip:]
commit_count = len(commits_to_process)
for commit in commits_to_process:
if callback:
current_commit += 1
callback(commit_count, current_commit)
self.__git_log.append(self.gen_beat(commit))
@property
def repo_data(self):
"""
Get repository data for MIDI generation.
"""
if self.__repo_data is None:
self.gen_repo_data(force=True)
return self.__repo_data
def write_mem(self):
"""
Write MIDI data to the memory file.
"""
self.writeFile(self.__mem_file)
self.__written = True
def export_file(self, filename):
"""
Export MIDI data to a file.
"""
if not self.__written:
self.write_mem()
with open(filename, 'w') as midi_file:
self.__mem_file.seek(0)
shutil.copyfileobj(self.__mem_file, midi_file)
def generate_midi(self, callback=None):
"""
Generate MIDI data.
"""
if self.__verbose:
print("Creating MIDI…")
track = 0
time = 0
log_channel = 0
decor_channel = 1
log_length = len(self.__git_log)
current = 0
# WRITE THE SEQUENCE
for section in self.__git_log:
current += 1
section_len = len(section['file_notes']) * self.__note_duration
if callback is not None:
callback(log_length, current)
# Add a long note
if self.__need_commits:
self.addNote(track, log_channel,
section['commit_note'], time,
section_len, section['commit_volume'])
if self.__need_files:
for i, file_note in enumerate(section['file_notes']):
self.addNote(track, decor_channel,
file_note['note'],
time + i * self.__note_duration,
self.__note_duration, file_note['volume'])
time += section_len
def __init_pygame(self):
"""
Initialise pygame.
"""
if not PYGAME_AVAILABLE or self.__pygame_inited:
return
# Initialise pygame
pygame.init()
pygame.mixer.init()
def play(self, track=False):
"""
Start MIDI playback. If pygame is not available, don’t do anything.
"""
if not PYGAME_AVAILABLE:
return "pygame is not available, cannot start playback"
if self.__verbose:
print("Playing!")
self.__init_pygame()
self.__mem_file.seek(0)
pygame.mixer.music.load(self.__mem_file)
pygame.mixer.music.play()
self.__playing = True
if not track:
while pygame.mixer.music.get_busy():
sleep(1)
self.__playing = False
def stop(self):
"""
Stop MIDI playback.
"""
if not PYGAME_AVAILABLE:
return
pygame.mixer.music.stop()
def get_play_pos(self):
"""
Get current playback position from the mixer
"""
if not self.__playing:
return None
if pygame.mixer.music.get_busy():
return pygame.mixer.music.get_pos()
else:
self.__playing = False
return None
def main():
"""
Main function, used if we are not imported.
"""
parser = argparse.ArgumentParser(description='Voice of a Repo',
parser = argparse.ArgumentParser(description='Voice of a Repo',
epilog='Use the special value list for ' +
'scale and program to list the ' +
'available program combinations')
parser.add_argument('repository', type=str, nargs='?', default='.')
parser.add_argument('--branch',
parser.add_argument('repository', type=str, nargs='?', default='.')
parser.add_argument('--branch',
type=str,
default='master',
help="The branch to generate sound for [master]")
parser.add_argument('--file',
parser.add_argument('--file',
type=str,
default=None,
help="Save the generated MIDI sequence to this file")
parser.add_argument('--play',
parser.add_argument('--play',
action='store_true',
default=False,
help="Play the generated file (requires pygame with " +
"MIDI support)")
parser.add_argument('--verbose',
parser.add_argument('--verbose',
action='store_true',
default=False,
help="Print messages during execution")
parser.add_argument('--scale',
parser.add_argument('--scale',
type=str,
default=None,
help="Scale to use in the generated track")
parser.add_argument('--program',
parser.add_argument('--program',
type=str,
default=None,
help="Program setting to use in the generated track")
parser.add_argument('--volume-range',
parser.add_argument('--volume-range',
type=int,
default=100,
help="The volume range to use.")
parser.add_argument('--skip',
parser.add_argument('--skip',
type=int,
default=0,
metavar='N',
@ -793,48 +142,48 @@ def main():
"(comes in handy if the repo started " +
"with some huge commits)")
args = parser.parse_args()
args = parser.parse_args()
if args.scale is None and args.program is None and GTK_AVAILABLE:
GitSoundWindow().start()
if args.scale is None and args.program is None and GUI_AVAILABLE:
GitSoundWindow(PROGRAMS, SCALES).start()
sys.exit(0)
if args.scale is None and args.program != 'list':
if args.scale is None and args.program != 'list':
print("Please specify a scale!")
sys.exit(1)
if args.program is None and args.scale != 'list':
if args.program is None and args.scale != 'list':
print("Please specify a program!")
sys.exit(1)
if args.scale == 'list':
if args.scale == 'list':
for scale in SCALES.keys():
print(scale)
sys.exit(0)
if args.program == 'list':
if args.program == 'list':
for program in PROGRAMS.keys():
print(program)
sys.exit(0)
if args.scale not in SCALES:
if args.scale not in SCALES:
print("{} is an unknown scale.".format(args.scale))
print("Use 'list' to list the available scales.")
sys.exit(1)
if args.program not in PROGRAMS:
if args.program not in PROGRAMS:
print("{} is an unknown program.".format(args.program))
print("Use 'list' to list the available programs.")
sys.exit(1)
try:
try:
repo_midi = GitMIDI(repository=args.repository,
branch=args.branch,
verbose=args.verbose,
@ -843,29 +192,26 @@ def main():
volume_range=args.volume_range,
skip=args.skip)
except InvalidGitRepositoryError:
except InvalidGitRepositoryError:
print("{} is not a valid Git repository"
.format(os.path.abspath(args.repository)))
sys.exit(1)
except IndexError:
except IndexError:
print("Branch '{}' does not exist in this repo".format(args.branch))
sys.exit(1)
repo_midi.gen_repo_data()
repo_midi.generate_midi()
repo_midi.write_mem()
repo_midi.gen_repo_data()
repo_midi.generate_midi()
repo_midi.write_mem()
if args.file:
if args.file:
if args.verbose:
print("Saving file to {}".format(args.file))
repo_midi.export_file(args.file)
if args.play:
if args.play:
repo_midi.play()
if __name__ == '__main__':
main()

0
git_sound/__init__.py Normal file
View File

374
git_sound/gitmidi.py Normal file
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@ -0,0 +1,374 @@
# -*- coding: utf-8
"""
The GitMIDI class that converts a Git repository’s log into MIDI music.
"""
from __future__ import print_function
import os
import shutil
from midiutil.MidiFile import MIDIFile
from StringIO import StringIO
from git import Repo
from git.objects.blob import Blob
from time import sleep
try:
import pygame
import pygame.mixer
PYGAME_AVAILABLE = True
except ImportError:
PYGAME_AVAILABLE = False
def get_file_sha(commit, file_name):
"""
Get the SHA1 ID of a file by its name, in the given commit.
"""
elements = file_name.split(os.sep)
tree = commit.tree
while True:
try:
tree = tree[elements.pop(0)]
except (KeyError, IndexError):
# The file has been deleted, return the hash of an empty file
return 'e69de29bb2d1d6434b8b29ae775ad8c2e48c5391'
if isinstance(tree, Blob):
break
return tree.hexsha
class GitMIDI(MIDIFile):
"""
Class to hold repository data, and MIDI data based on that repository.
"""
LOG_CHANNEL = 0
FILE_CHANNEL = 1
def __setup_midi(self, track_title=None):
"""
Initialise the MIDI file.
"""
if self.__verbose:
print("Preparing MIDI track…")
if track_title is None:
# TODO: Change this to something that connects to the repo
self.addTrackName(0, 0, "Sample Track")
self.addTempo(0, 0, self.__tempo)
if self.__need_commits:
self.addProgramChange(0, self.LOG_CHANNEL,
0, self.__program['commit']['program'])
if self.__need_files:
self.addProgramChange(0, self.FILE_CHANNEL,
0, self.__program['file']['program'])
def __setup_repo(self):
"""
Setup repository and get the specified branch.
"""
if self.__verbose:
print("Analyzing repository…")
repo = Repo(self.__repo_dir)
self.__branch_head = repo.heads[self.__branch].commit
def __init__(self,
repository=None,
branch=None,
verbose=None,
scale=None,
program=None,
volume_range=None,
skip=None,
note_duration=None,
max_beat_len=None,
tempo=None):
MIDIFile.__init__(self, 1)
self.__verbose = verbose or False
self.__written = False
self.__repo_dir = repository or '.'
self.__repo = None
self.__branch = branch or 'master'
self.__branch_head = None
self.__repo_data = None
self.__git_log = []
self.__mem_file = StringIO()
self.__scale = scale
self.__program = program
self.__volume_deviation = min(abs(63 - (volume_range or 107)), 63)
self.__pygame_inited = False
self.__playing = False
self.__skip = skip or 0
self.__note_duration = note_duration or 0.3
self.__max_beat_len = max_beat_len or 10
self.__tempo = tempo or 120
self.__need_commits = self.__program['commit']['program'] is not None
self.__need_files = self.__program['file']['program'] is not None
self.__setup_midi()
self.__setup_repo()
def gen_volume(self, deletions, insertions, modifier):
"""
Generate a volume based on the number of modified lines
(insertions - deletions).
deviation specifies the minimum and maximum volume (minimum is
the value of deviation, maximum is 127 - deviation).
"""
return max(
self.__volume_deviation,
min(127 - self.__volume_deviation,
63 - deletions + insertions + modifier))
def sha_to_note(self, sha):
"""
Calculate note based on an SHA1 hash
"""
note_num = reduce(lambda res, digit: res + int(digit, 16),
list(str(sha)), 0) % len(self.__scale)
return self.__scale[note_num]
def gen_beat(self, commit):
"""
Generate data for a beat based on a commit and its files.
"""
stat = commit.stats
file_notes = []
file_count = 0
for file_name, file_stat in stat.files.items():
file_count += 1
if file_count > self.__max_beat_len:
break
volume_mod = self.__program['file'].get('volume', 0)
file_note = self.sha_to_note(get_file_sha(commit, file_name)) + \
self.__program['file']['octave'] * 12
file_volume = self.gen_volume(file_stat['deletions'],
file_stat['insertions'],
volume_mod)
file_notes.append({
'note': file_note,
'volume': file_volume,
})
volume_mod = self.__program['commit'].get('volume', 0)
commit_note = self.sha_to_note(commit.hexsha) + \
self.__program['commit']['octave'] * 12
commit_volume = self.gen_volume(stat.total['deletions'],
stat.total['insertions'],
volume_mod)
return {
'commit_note': commit_note,
'commit_volume': commit_volume,
'file_notes': file_notes,
}
def gen_repo_data(self, force=False, callback=None):
"""
Populate __repo_data with the Git history data. If force is
False and the repo_data is already calculated, we do not do
anything.
"""
if self.__repo_data and not force:
return
if self.__verbose:
print("Reading repository log…")
self.__repo_data = []
counter = 0
to_process = [self.__branch_head]
while len(to_process) > 0:
counter += 1
# TODO: Make this 500 configurable
if counter % 500 == 0 and self.__verbose:
print("Done with {} commits".format(counter))
current_commit = to_process.pop()
if callback is not None:
callback(None, None)
if current_commit not in self.__repo_data:
self.__repo_data.append(current_commit)
to_process += current_commit.parents
if self.__verbose:
print("{} commits found".format(counter))
print("Sorting commits…")
self.__repo_data.sort(key=lambda commit: commit.authored_date)
if self.__verbose:
print("Generating MIDI data…")
self.__git_log = []
current_commit = 0
commits_to_process = self.__repo_data[self.__skip:]
commit_count = len(commits_to_process)
for commit in commits_to_process:
if callback:
current_commit += 1
callback(commit_count, current_commit)
self.__git_log.append(self.gen_beat(commit))
@property
def repo_data(self):
"""
Get repository data for MIDI generation.
"""
if self.__repo_data is None:
self.gen_repo_data(force=True)
return self.__repo_data
def write_mem(self):
"""
Write MIDI data to the memory file.
"""
self.writeFile(self.__mem_file)
self.__written = True
def export_file(self, filename):
"""
Export MIDI data to a file.
"""
if not self.__written:
self.write_mem()
with open(filename, 'w') as midi_file:
self.__mem_file.seek(0)
shutil.copyfileobj(self.__mem_file, midi_file)
def generate_midi(self, callback=None):
"""
Generate MIDI data.
"""
if self.__verbose:
print("Creating MIDI…")
track = 0
time = 0
log_channel = 0
decor_channel = 1
log_length = len(self.__git_log)
current = 0
# WRITE THE SEQUENCE
for section in self.__git_log:
current += 1
section_len = len(section['file_notes']) * self.__note_duration
if callback is not None:
callback(log_length, current)
# Add a long note
if self.__need_commits:
self.addNote(track, log_channel,
section['commit_note'], time,
section_len, section['commit_volume'])
if self.__need_files:
for i, file_note in enumerate(section['file_notes']):
self.addNote(track, decor_channel,
file_note['note'],
time + i * self.__note_duration,
self.__note_duration, file_note['volume'])
time += section_len
def __init_pygame(self):
"""
Initialise pygame.
"""
if not PYGAME_AVAILABLE or self.__pygame_inited:
return
# Initialise pygame
pygame.init()
pygame.mixer.init()
def play(self, track=False):
"""
Start MIDI playback. If pygame is not available, don’t do anything.
"""
if not PYGAME_AVAILABLE:
return "pygame is not available, cannot start playback"
if self.__verbose:
print("Playing!")
self.__init_pygame()
self.__mem_file.seek(0)
pygame.mixer.music.load(self.__mem_file)
pygame.mixer.music.play()
self.__playing = True
if not track:
while pygame.mixer.music.get_busy():
sleep(1)
self.__playing = False
def stop(self):
"""
Stop MIDI playback.
"""
if not PYGAME_AVAILABLE:
return
pygame.mixer.music.stop()
def get_play_pos(self):
"""
Get current playback position from the mixer
"""
if not self.__playing:
return None
if pygame.mixer.music.get_busy():
return pygame.mixer.music.get_pos()
else:
self.__playing = False
return None

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# -*- coding: utf-8
"""
GUI for git-sound
"""
import sys
import gi
gi.require_version('Gtk', '3.0')
from gi.repository import Gtk
from gi.repository import GLib
from git.exc import InvalidGitRepositoryError
from git import Repo
from .gitmidi import GitMIDI
class GitSoundWindow(object):
"""
GIU class for git-sound.
"""
def __init__(self, programs, scales):
self.__programs = programs
self.__scales = scales
self.builder = Gtk.Builder()
self.builder.add_from_file('git-sound.ui')
self.win = self.builder.get_object('main-window')
self.play_button = self.builder.get_object('play-button')
self.stop_button = self.builder.get_object('stop-button')
self.vol_spin = self.builder.get_object('vol-spin')
self.program_combo = self.builder.get_object('program-combo')
self.progressbar = self.builder.get_object('generate-progress')
self.branch_combo = self.builder.get_object('branch-combo')
self.statusbar = self.builder.get_object('statusbar')
self.pos_label = self.builder.get_object('position-label')
self.skip_spin = self.builder.get_object('skip-spin')
self.scale_combo = self.builder.get_object('scale-combo')
self.chooser_button = self.builder.get_object('repo-chooser')
self.notelen_spin = self.builder.get_object('notelen-spin')
self.beatlen_spin = self.builder.get_object('beatlen-spin')
self.generate_button = self.builder.get_object('generate-button')
self.save_button = self.builder.get_object('save-button')
self.gitmidi = None
program_store = self.builder.get_object('program-list')
for program_id, program in self.__programs.items():
program_store.append([program['name'], program_id])
renderer = Gtk.CellRendererText()
self.program_combo.pack_start(renderer, True)
self.program_combo.add_attribute(renderer, "text", 0)
scale_store = self.builder.get_object('scale-list')
for scale_id, scale in self.__scales.items():
scale_store.append([scale[0], scale_id])
renderer = Gtk.CellRendererText()
self.scale_combo.pack_start(renderer, True)
self.scale_combo.add_attribute(renderer, "text", 0)
self.builder.connect_signals({
'read_branches': lambda button: self.read_branches(),
'settings_changed': lambda button: self.settings_changed(),
'generate_repo': lambda button: self.generate_repo(),
'play_midi': lambda button: self.play_midi(),
'stop_midi': lambda button: self.stop_midi(),
'save_midi': lambda button: self.save_midi(),
})
self.win.connect("delete-event", Gtk.main_quit)
def read_branches(self):
"""
Callback for the repository chooser. Upon change, this reads
all the branches from the selected repository.
"""
# Make sure the Play, Stop and Save buttons are disabled
self.gitmidi = None
repo_path = self.chooser_button.get_file().get_path()
self.branch_combo.remove_all()
self.branch_combo.set_button_sensitivity(False)
self.set_buttons_sensitivity(disable_all=True)
try:
repo = Repo(repo_path)
except InvalidGitRepositoryError:
dialog = Gtk.MessageDialog(
self.chooser_button.get_toplevel(),
Gtk.DialogFlags.MODAL,
Gtk.MessageType.ERROR,
Gtk.ButtonsType.OK,
"{} is not a valid Git repository".format(
repo_path))
dialog.connect('response',
lambda dialog, response_id: dialog.destroy())
dialog.run()
return
self.set_status('Opened repository: {}'.format(repo_path))
self.branch_combo.set_button_sensitivity(True)
for head in repo.heads:
self.branch_combo.append_text(head.name)
def set_status(self, text):
"""
Change the status bar text.
"""
self.statusbar.push(self.statusbar.get_context_id("git-sound"), text)
def settings_changed(self):
"""
Callback to use if anything MIDI-related is changed
(repository, branch, scale or program).
"""
self.gitmidi = None
self.set_buttons_sensitivity()
self.stop_midi()
def set_buttons_sensitivity(self, disable_all=False):
"""
Set buttons sensitivity based on different conditions.
It checks if a repository and a branch is selected or if MIDI
data is already generated.
"""
self.stop_button.set_sensitive(False)
if disable_all:
self.generate_button.set_sensitive(False)
self.play_button.set_sensitive(False)
self.save_button.set_sensitive(False)
return
if self.gitmidi is not None:
self.generate_button.set_sensitive(False)
self.play_button.set_sensitive(True)
self.save_button.set_sensitive(True)
return
branch_selected = self.branch_combo.get_active_text() is not None
program_selected = self.program_combo.get_active_id() is not None
scale_selected = self.scale_combo.get_active_id() is not None
if branch_selected and program_selected and scale_selected:
self.generate_button.set_sensitive(True)
self.play_button.set_sensitive(False)
self.save_button.set_sensitive(False)
def generate_repo(self):
"""
Generate repository data for MIDI data.
"""
repo_path = self.chooser_button.get_file().get_path()
branch_selected = self.branch_combo.get_active_text()
program_selected = self.program_combo.get_active_id()
scale_selected = self.scale_combo.get_active_id()
skip = int(self.skip_spin.get_value())
vol_deviation = int(self.vol_spin.get_value())
notelen = self.notelen_spin.get_value()
beatlen = int(self.beatlen_spin.get_value()) or None
self.progressbar.set_fraction(0.0)
self.progressbar.pulse()
self.set_status("Reading commits")
self.gitmidi = GitMIDI(repository=repo_path,
branch=branch_selected,
verbose=False,
scale=self.__scales[scale_selected][1],
program=self.__programs[program_selected],
volume_range=vol_deviation,
skip=skip,
note_duration=notelen,
max_beat_len=beatlen)
self.set_status("Generating beats")
self.gitmidi.gen_repo_data(callback=self.genrepo_cb)
self.set_status("Generating MIDI")
self.gitmidi.generate_midi(callback=self.genrepo_cb)
self.gitmidi.write_mem()
self.set_buttons_sensitivity(disable_all=False)
def genrepo_cb(self, max_count, current):
"""
Generate repository data. This is called when the user presses
the Generate button.
"""
if max_count is None or current is None:
self.progressbar.pulse()
else:
fraction = float(current) / float(max_count)
self.progressbar.set_fraction(fraction)
# Make sure the progress bar gets updated
Gtk.main_iteration_do(False)
Gtk.main_iteration_do(False)
def update_play_pos(self):
"""
Update playback position label.
"""
if self.gitmidi is None:
return
position = self.gitmidi.get_play_pos()
if position is None:
self.set_status("Stopped")
self.pos_label.set_text("0:00")
self.play_button.set_sensitive(True)
self.stop_button.set_sensitive(False)
return False
position = int(position / 1000)
minutes = int(position / 60)
seconds = position - (minutes * 60)
self.pos_label.set_text("{}:{:02}".format(minutes, seconds))
return True
def play_midi(self):
"""
Start MIDI playback.
"""
self.set_status(u"Playing…")
self.gitmidi.play(track=True)
GLib.timeout_add_seconds(1, self.update_play_pos)
self.play_button.set_sensitive(False)
self.stop_button.set_sensitive(True)
def stop_midi(self):
"""
Stop MIDI playback.
"""
if self.gitmidi is not None:
self.gitmidi.stop()
def __save(self, dialog, response_id):
"""
Do the actual MIDI saving after the user chose a file.
"""
if response_id == Gtk.ResponseType.OK:
save_file = dialog.get_file().get_path()
dialog.destroy()
self.gitmidi.export_file(save_file)
def save_midi(self):
"""
Save MIDI data.
"""
dialog = Gtk.FileChooserDialog(
u"Save As…",
self.win,
Gtk.FileChooserAction.SAVE,
("Save", Gtk.ResponseType.OK))
dialog.set_do_overwrite_confirmation(True)
dialog.connect('response', self.__save)
dialog.run()
def start(self):
"""
Start the GUI.
"""
self.win.show_all()
Gtk.main()
sys.exit(0)