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Browser.py
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Browser.py
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import re
import os
import socket
import json
import pathlib
import time
import select
from XoneK2_DJ.tinytag import TinyTag
from urllib.parse import unquote
MUSIC_TO_OPEN_KEY = {
'Am': '1m',
'C': '1d',
'Em': '2m',
'G': '2d',
'Bm': '3m',
'D': '3d',
'F#m': '4m',
'Gbm': '4m',
'A': '4d',
'Dbm': '5m',
'C#m': '5m',
'E': '5d',
'Abm': '6m',
'G#m': '6m',
'B': '6d',
'Ebm': '7m',
'D#m': '7m',
'F#': '7d',
'Gb': '7d',
'Bbm': '8m',
'A#m': '8m',
'Db': '8d',
'C#': '8d',
'Fm': '9m',
'Ab': '9d',
'G#': '9d',
'Cm': '10m',
'Eb': '10d',
'D#': '10d',
'Gm': '11m',
'Bb': '11d',
'A#': '11d',
'Dm': '12m',
'F': '12d'
}
OPEN_TO_MUSICAL_KEY = {
'1m': 'Am',
'1d': 'C',
'2m': 'Em',
'2d': 'G',
'3m': 'Bm',
'3d': 'D',
'4m': 'F#m',
'4d': 'A',
'5m': 'C#m',
'5d': 'E',
'6m': 'G#m',
'6d': 'B',
'7m': 'D#m',
'7d': 'F#',
'8m': 'A#m',
'8d': 'C#',
'9m': 'Fm',
'9d': 'G#',
'10m': 'Cm',
'10d': 'D#',
'11m': 'Gm',
'11d': 'A#',
'12m': 'Dm',
'12d': 'F'
}
def uri_to_path(uri):
path = re.sub('^query:UserLibrary#', '~/Music/Ableton/User Library/', uri)
path = re.sub(':','/', path)
path = unquote(path)
return path
def key_distance(from_key, to_key):
# key distances are as follows:
# -1: unknown
# 0: same key
# 1: neighbouring key on circle
# 2: opposite key on circle
# 3: same number, but change d <-> m
if from_key == to_key:
return 0
try:
from_dm = from_key[-1]
to_dm = to_key[-1]
from_num = int(from_key[0:-1])
to_num = int(to_key[0:-1])
except:
return -1
if from_dm != to_dm:
# only accept same number if changing from major to mayor and vice versa
if from_num == to_num:
return 3
else:
return 12
d = (12 + from_num - to_num) % 12
if (d == 6):
#exactly opposite on wheel
return 2
if (d > 6):
d = 12 - 6
if (d <= 1):
return d
return 12
class TaggedFile():
def __init__(self, filename):
self._file_name = filename
self._tags = TinyTag.get(self._file_name)
self._duration = "%d:%02d" % (int(self._tags.duration)/60, int(self._tags.duration) % 60)
self._bpm = self._tags.extra['bpm'] if 'bpm' in self._tags.extra else "none"
self._key = self._tags.extra['initial_key'] if 'initial_key' in self._tags.extra else "none"
self._key_distance = -1
self._normaliseKey()
def _normaliseKey(self):
self._open_key = ""
self._musical_key = ""
if re.match("[0-9]{1,2}[dm]", self._key):
self._open_key = self._key
self._musical_key = OPEN_TO_MUSICAL_KEY[self._key] if self._key in OPEN_TO_MUSICAL_KEY.keys() else "?"
else:
key = re.sub('maj', '', self._key)
key = re.sub('min','m', key)
self._musical_key = key
self._open_key = MUSIC_TO_OPEN_KEY[key] if key in MUSIC_TO_OPEN_KEY.keys() else "?"
def updateDistanceTo(self, key):
if key == None:
self._key_distance = -1
else:
self._key_distance = key_distance(self.open_key, key)
@property
def filename(self):
return self._file_name
@property
def artist(self):
return self._tags.artist or "unknown"
@property
def title(self):
return self._tags.title or self.filename.split('/')[-1]
@property
def duration(self):
return self._duration
@property
def open_key(self):
return self._open_key
@property
def key(self):
return self._open_key + " / " + self._musical_key
@property
def bpm(self):
return float(self._bpm) if self._bpm != "none" else 0.0
@property
def genre(self):
return self._tags.genre or "unknown"
@property
def keydistance(self):
return self._key_distance
class BrowserItem(TaggedFile):
def __init__(self, live_browser_item):
super(BrowserItem, self).__init__(uri_to_path(live_browser_item.uri))
self._item = live_browser_item
def item(self):
return self._item
class BrowserRepresentation():
SOCKET_IN = "/tmp/LiveMusicBrowser.src.socket"
SOCKET_OUT = "/tmp/LiveMusicBrowser.ui.socket"
def __init__(self, browser, log):
self._browser = browser
self._log = log
self._parents = []
self._current = []
self._filtered = []
self._current_index = 0
self._iterate_and_find_audio(browser.user_library)
self._decks = {}
if os.path.exists(self.SOCKET_IN):
os.remove(self.SOCKET_IN)
self._socket = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
self._socket.bind(self.SOCKET_IN)
self._socket.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, 250*1024)
self._bpm_lower = 0.0
self._bpm_upper = 1000.0
self._bpm = 100.0
self._bpm_tolerance_percent = 5.0
self._filter_by_bpm = True
self._filter_by_key = True
self._filter_artist = ""
self._filter_title = ""
self._filter_genre = ""
self._start_ui()
self._apply_filter()
self._update()
def _iterate_and_find_audio(self, node):
for n in node.iter_children:
if n.is_folder:
self._iterate_and_find_audio(n)
elif n.uri.endswith("aiff") or n.uri.endswith("mp3"):
self._current.append(BrowserItem(n))
def scroll_horizontal(self, right_not_left):
pass
def set_current_index(self, index):
if index >= len(self._filtered):
index = len(self._filtered) - 1
elif index < 0:
index = 0
self._current_index = index
def scroll_vertical(self, down_not_up):
if down_not_up:
self.set_current_index(self._current_index + 1)
else:
self.set_current_index(self._current_index - 1)
self._update()
def preview(self):
self._browser.preview_item(
self._filtered[self._current_index].item())
def load(self):
self._browser.load_item(
self._filtered[self._current_index].item())
def tempo(self, bpm):
self._bpm = float(bpm)
self._apply_filter()
self._update()
def _filter(self, item):
if self._filter_artist != "" and not self._filter_artist in item.artist.lower():
return False
if self._filter_title != "" and not self._filter_title in item.title.lower():
return False
if self._filter_genre != "" and not self._filter_genre in item.genre.lower():
return False
return (not self._filter_by_bpm or (item.bpm > self._bpm_lower and item.bpm < self._bpm_upper)) and \
(not self._filter_by_key or item.keydistance < 4)
def _apply_filter(self):
try:
current_sel = self._filtered[self._current_index]
except:
current_sel = None
fac = (100.0 + self._bpm_tolerance_percent)/100.0
self._bpm_upper = self._bpm * fac
self._bpm_lower = self._bpm / fac
self._filtered = list(filter(lambda item: self._filter(item), self._current))
try:
self._current_index = self._filtered.index(current_sel)
except:
self._current_index = 0
def _update_key_distance(self):
self._playing_key = None
if self._master_deck != None:
self._playing_key = self._master_deck.open_key
for item in self._current:
item.updateDistanceTo(self._playing_key)
def _update(self):
d = {
"sel_ix": self._current_index,
"cols": [
"Artist",
"Title",
"Genre",
"Duration",
"BPM",
"Key",
"KeyDistance"
],
"rows": [],
"playing": {},
"bpm_filter": self._filter_by_bpm,
"bpm_percent": self._bpm_tolerance_percent,
"key_filter": self._filter_by_key
}
for item in self._filtered:
r = []
for k in d["cols"]:
r.append(getattr(item, k.lower()))
d["rows"].append(r)
d["master_deck"] = -1
d["decks"] = []
deck_index = 0
for deck in self._decks:
d["decks"].append([])
if deck != None:
for k in d["cols"]:
d["decks"][-1].append(getattr(deck, k.lower()))
if deck == self._master_deck:
d["master_deck"] = deck_index
deck_index = deck_index + 1
try:
self._socket.sendto(json.dumps(d, indent=1).encode('utf-8'), self.SOCKET_OUT)
except:
pass
def set_decks(self, decks, master_deck_index):
d = []
for f in decks:
d.append(TaggedFile(f) if f != None else None)
self._decks = d
try:
self._master_deck = self._decks[master_deck_index]
except:
# find first deck that isn't none
self._master_deck = None
for deck in self._decks:
if deck != None:
self._master_deck = deck
break
self._update_key_distance()
self._apply_filter()
self._update()
def _start_ui(self):
pwd = pathlib.Path(__file__).parent.resolve()
os.system("'%s/build/LiveMusicBrowser' > /tmp/LiveMusicBrowser.log &" % pwd)
timeout = 10
while (timeout > 0 and not os.path.exists(self.SOCKET_OUT)):
time.sleep(0.1)
timeout = timeout - 1
def poll(self):
ready = select.select([self._socket], [], [], 0)
if ready[0]:
data = self._socket.recv(4096)
self._log("Received: %s" % data)
data = json.loads(data)
filter_changed = False
if "bpm_filter" in data:
filter_changed = filter_changed or self._filter_by_bpm != data["bpm_filter"]
self._filter_by_bpm = data["bpm_filter"]
if "key_filter" in data:
filter_changed = filter_changed or self._filter_by_key != data["key_filter"]
self._filter_by_key = data["key_filter"]
elif "bpm_percent" in data:
filter_changed = filter_changed or self._bpm_tolerance_percent != data["bpm_percent"]
self._bpm_tolerance_percent = data["bpm_percent"]
elif "preview_ix" in data:
self.set_current_index(data["preview_ix"])
self.preview()
self._update()
elif "load_ix" in data:
self.set_current_index(data["load_ix"])
self.load()
self._update()
elif "filter_artist" in data:
self._filter_artist = data["filter_artist"].lower()
filter_changed = filter_changed or True
elif "filter_title" in data:
self._filter_title = data["filter_title"].lower()
filter_changed = filter_changed or True
elif "filter_genre" in data:
self._filter_genre = data["filter_genre"].lower()
filter_changed = filter_changed or True
if filter_changed:
self._apply_filter()
self._update()
def _quit_ui(self):
try:
self._socket.sendto(json.dumps({"quit": True}).encode('utf-8'), self.SOCKET_OUT)
except:
pass
def __del__(self):
self._quit_ui()
def disconnect(self):
self._quit_ui()