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piano.py
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from kivy.app import App
from kivy.app import App
from kivy.uix.floatlayout import FloatLayout
from kivy.properties import ListProperty, NumericProperty, StringProperty, ReferenceListProperty
from kivy.graphics import InstructionGroup, Color, Line, Rectangle
from kivy.animation import Animation
from music_constants import chrom_scale, chrom_scale_no_acc, scale_degrees, standard_tuning, scale_highlights
from markers import Marker
from colors import black, white, rainbow, octave_colors
import time
import guitarpro
from typing import List
from functools import partial
from threading import Thread
scale_texts = {
None: chrom_scale,
"": chrom_scale,
"Notes": chrom_scale,
"Notes - No Accidentals": chrom_scale_no_acc,
"Scale Degrees": scale_degrees}
class Piano(FloatLayout):
keyboard_pos = ListProperty()
root_note_idx = NumericProperty(0)
mode_filter = NumericProperty(0b101011010101)
scale_text = StringProperty("")
notes_to_highlight = StringProperty("")
notes_or_octaves = StringProperty("")
tuning = ListProperty(standard_tuning)
m0_anim_prop = NumericProperty(0)
m1_anim_prop = NumericProperty(0)
m2_anim_prop = NumericProperty(0)
m3_anim_prop = NumericProperty(0)
m4_anim_prop = NumericProperty(0)
m5_anim_prop = NumericProperty(0)
m6_anim_prop = NumericProperty(0)
m7_anim_prop = NumericProperty(0)
m8_anim_prop = NumericProperty(0)
m9_anim_prop = NumericProperty(0)
m10_anim_prop = NumericProperty(0)
m11_anim_prop = NumericProperty(0)
m12_anim_prop = NumericProperty(0)
m13_anim_prop = NumericProperty(0)
m14_anim_prop = NumericProperty(0)
m15_anim_prop = NumericProperty(0)
m16_anim_prop = NumericProperty(0)
m17_anim_prop = NumericProperty(0)
m18_anim_prop = NumericProperty(0)
m19_anim_prop = NumericProperty(0)
m20_anim_prop = NumericProperty(0)
m21_anim_prop = NumericProperty(0)
m22_anim_prop = NumericProperty(0)
m23_anim_prop = NumericProperty(0)
m24_anim_prop = NumericProperty(0)
m25_anim_prop = NumericProperty(0)
m26_anim_prop = NumericProperty(0)
m27_anim_prop = NumericProperty(0)
m28_anim_prop = NumericProperty(0)
m29_anim_prop = NumericProperty(0)
m30_anim_prop = NumericProperty(0)
m31_anim_prop = NumericProperty(0)
m32_anim_prop = NumericProperty(0)
m33_anim_prop = NumericProperty(0)
m34_anim_prop = NumericProperty(0)
m35_anim_prop = NumericProperty(0)
m36_anim_prop = NumericProperty(0)
m37_anim_prop = NumericProperty(0)
m38_anim_prop = NumericProperty(0)
m39_anim_prop = NumericProperty(0)
m40_anim_prop = NumericProperty(0)
m41_anim_prop = NumericProperty(0)
m42_anim_prop = NumericProperty(0)
m43_anim_prop = NumericProperty(0)
m44_anim_prop = NumericProperty(0)
m45_anim_prop = NumericProperty(0)
m46_anim_prop = NumericProperty(0)
m47_anim_prop = NumericProperty(0)
m48_anim_prop = NumericProperty(0)
m49_anim_prop = NumericProperty(0)
m50_anim_prop = NumericProperty(0)
m51_anim_prop = NumericProperty(0)
m52_anim_prop = NumericProperty(0)
m53_anim_prop = NumericProperty(0)
m54_anim_prop = NumericProperty(0)
m55_anim_prop = NumericProperty(0)
m56_anim_prop = NumericProperty(0)
m57_anim_prop = NumericProperty(0)
m58_anim_prop = NumericProperty(0)
m59_anim_prop = NumericProperty(0)
anim_props = ReferenceListProperty(m0_anim_prop, m1_anim_prop, m2_anim_prop, m3_anim_prop,
m4_anim_prop, m5_anim_prop, m6_anim_prop, m7_anim_prop,
m8_anim_prop, m9_anim_prop, m10_anim_prop, m11_anim_prop,
m12_anim_prop, m13_anim_prop, m14_anim_prop, m15_anim_prop,
m16_anim_prop, m17_anim_prop, m18_anim_prop, m19_anim_prop,
m20_anim_prop, m21_anim_prop, m22_anim_prop, m23_anim_prop,
m24_anim_prop, m25_anim_prop, m26_anim_prop, m27_anim_prop,
m28_anim_prop, m29_anim_prop, m30_anim_prop, m31_anim_prop,
m32_anim_prop, m33_anim_prop, m34_anim_prop, m35_anim_prop,
m36_anim_prop, m37_anim_prop, m38_anim_prop, m39_anim_prop,
m40_anim_prop, m41_anim_prop, m42_anim_prop, m43_anim_prop,
m44_anim_prop, m45_anim_prop, m46_anim_prop, m47_anim_prop,
m48_anim_prop, m49_anim_prop, m50_anim_prop, m51_anim_prop,
m52_anim_prop, m53_anim_prop, m54_anim_prop, m55_anim_prop,
m56_anim_prop, m57_anim_prop, m58_anim_prop, m59_anim_prop)
m0_hit_prop = NumericProperty(0)
m1_hit_prop = NumericProperty(0)
m2_hit_prop = NumericProperty(0)
m3_hit_prop = NumericProperty(0)
m4_hit_prop = NumericProperty(0)
m5_hit_prop = NumericProperty(0)
m6_hit_prop = NumericProperty(0)
m7_hit_prop = NumericProperty(0)
m8_hit_prop = NumericProperty(0)
m9_hit_prop = NumericProperty(0)
m10_hit_prop = NumericProperty(0)
m11_hit_prop = NumericProperty(0)
m12_hit_prop = NumericProperty(0)
m13_hit_prop = NumericProperty(0)
m14_hit_prop = NumericProperty(0)
m15_hit_prop = NumericProperty(0)
m16_hit_prop = NumericProperty(0)
m17_hit_prop = NumericProperty(0)
m18_hit_prop = NumericProperty(0)
m19_hit_prop = NumericProperty(0)
m20_hit_prop = NumericProperty(0)
m21_hit_prop = NumericProperty(0)
m22_hit_prop = NumericProperty(0)
m23_hit_prop = NumericProperty(0)
m24_hit_prop = NumericProperty(0)
m25_hit_prop = NumericProperty(0)
m26_hit_prop = NumericProperty(0)
m27_hit_prop = NumericProperty(0)
m28_hit_prop = NumericProperty(0)
m29_hit_prop = NumericProperty(0)
m30_hit_prop = NumericProperty(0)
m31_hit_prop = NumericProperty(0)
m32_hit_prop = NumericProperty(0)
m33_hit_prop = NumericProperty(0)
m34_hit_prop = NumericProperty(0)
m35_hit_prop = NumericProperty(0)
m36_hit_prop = NumericProperty(0)
m37_hit_prop = NumericProperty(0)
m38_hit_prop = NumericProperty(0)
m39_hit_prop = NumericProperty(0)
m40_hit_prop = NumericProperty(0)
m41_hit_prop = NumericProperty(0)
m42_hit_prop = NumericProperty(0)
m43_hit_prop = NumericProperty(0)
m44_hit_prop = NumericProperty(0)
m45_hit_prop = NumericProperty(0)
m46_hit_prop = NumericProperty(0)
m47_hit_prop = NumericProperty(0)
m48_hit_prop = NumericProperty(0)
m49_hit_prop = NumericProperty(0)
m50_hit_prop = NumericProperty(0)
m51_hit_prop = NumericProperty(0)
m52_hit_prop = NumericProperty(0)
m53_hit_prop = NumericProperty(0)
m54_hit_prop = NumericProperty(0)
m55_hit_prop = NumericProperty(0)
m56_hit_prop = NumericProperty(0)
m57_hit_prop = NumericProperty(0)
m58_hit_prop = NumericProperty(0)
m59_hit_prop = NumericProperty(0)
hit_props = ReferenceListProperty(m0_hit_prop, m1_hit_prop, m2_hit_prop, m3_hit_prop,
m4_hit_prop, m5_hit_prop, m6_hit_prop, m7_hit_prop,
m8_hit_prop, m9_hit_prop, m10_hit_prop, m11_hit_prop,
m12_hit_prop, m13_hit_prop, m14_hit_prop, m15_hit_prop,
m16_hit_prop, m17_hit_prop, m18_hit_prop, m19_hit_prop,
m20_hit_prop, m21_hit_prop, m22_hit_prop, m23_hit_prop,
m24_hit_prop, m25_hit_prop, m26_hit_prop, m27_hit_prop,
m28_hit_prop, m29_hit_prop, m30_hit_prop, m31_hit_prop,
m32_hit_prop, m33_hit_prop, m34_hit_prop, m35_hit_prop,
m36_hit_prop, m37_hit_prop, m38_hit_prop, m39_hit_prop,
m40_hit_prop, m41_hit_prop, m42_hit_prop, m43_hit_prop,
m44_hit_prop, m45_hit_prop, m46_hit_prop, m47_hit_prop,
m48_hit_prop, m49_hit_prop, m50_hit_prop, m51_hit_prop,
m52_hit_prop, m53_hit_prop, m54_hit_prop, m55_hit_prop,
m56_hit_prop, m57_hit_prop, m58_hit_prop, m59_hit_prop)
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.background = Rectangle()
self.key_outlines = InstructionGroup()
self.black_keys = InstructionGroup()
self.note_markers = InstructionGroup()
self.canvas.add(white)
self.canvas.add(self.background)
self.canvas.add(black)
self.canvas.add(self.key_outlines)
self.canvas.add(self.black_keys)
self.canvas.add(self.note_markers)
self.key_midpoints = [] # For placing note markers.
self.black_key_midpoints = [] # For placing black keys.
self.rel_marker_heights = [0.1, 0.5, 0.1, 0.5, 0.1, 0.1, 0.5, 0.1, 0.5, 0.1, 0.5, 0.1]
self.note_vals = [note_val for note_val in range(24, 24 + 61)]
self.bind(pos=self.update_canvas, size=self.update_canvas)
self.stopped = False
def on_kv_post(self, *args):
self._calc_key_midpoints()
self._add_markers()
self._add_key_outlines()
self._add_black_keys()
def _calc_key_midpoints(self):
key_midpoints = []
key_width = 1 / 35
black_key_locs = {1, 2, 4, 5, 6}
for i in range(1, 36):
key_midpoints += [(i / 35) - key_width / 2]
if i % 7 in black_key_locs:
key_midpoints += [i / 35]
self.key_midpoints = key_midpoints
def _add_markers(self):
for i in range(60):
marker = Marker()
self.note_markers.add(marker)
def _add_key_outlines(self):
x, y = self.ids.keyboard.pos
w, h = self.ids.keyboard.size
step = w / 35
for i in range(35):
outline = Line(rectangle=(x + step * i, y, step, h))
self.key_outlines.add(outline)
def _add_black_keys(self):
# Total width = 5 octaves with 7 white keys each (black keys don't add to width).
black_key_midpoints = []
for i in range(35):
if i % 7 in (1, 2, 4, 5, 6):
black_key_midpoints += [i / 35]
self.black_keys.add(Rectangle())
self.black_key_midpoints = black_key_midpoints
def update_canvas(self, *args):
self.update_background()
self.update_key_outlines()
self.update_black_keys()
self.update_note_markers()
def update_background(self):
self.background.pos = self.ids.keyboard.pos
self.background.size = self.ids.keyboard.size
def update_key_outlines(self):
w, h = self.ids.keyboard.size
x, y = self.ids.keyboard.pos
step = w / 35
key_outlines = [obj for obj in self.key_outlines.children if isinstance(obj, Line)]
for i, outline in enumerate(key_outlines):
outline.rectangle = (x + step * i, y, step, h)
def update_black_keys(self):
white_key_width = self.ids.keyboard.width / 35
black_key_width = white_key_width * 0.55
black_keys = [obj for obj in self.black_keys.children if isinstance(obj, Rectangle)]
for center_x, black_key in zip(self.black_key_midpoints, black_keys):
x = center_x * self.ids.keyboard.width - (black_key_width / 2)
y = self.ids.keyboard.y + (self.ids.keyboard.height / 3)
black_key.pos = (x, y)
black_key.size = (black_key_width, self.ids.keyboard.height * (2/3))
def update_note_markers(self):
x, y = self.ids.keyboard.pos
width, height = self.ids.keyboard.size
key_width = width / 35
r1 = (key_width / 2) * 0.65
r2 = r1 * 0.9
rdiff = r1 - r2
for i, (note_val, marker) in enumerate(zip(self.note_vals, self.note_markers.children)):
key_midpoint = self.key_midpoints[i]
c1x = x + (key_midpoint * width) - r1
c1y = y + self.rel_marker_heights[i % 12] * height
c2x, c2y = c1x + rdiff, c1y + rdiff
octave, note_idx = divmod(note_val, 12)
included = int(bin(self.mode_filter)[2:][note_idx - self.root_note_idx])
highlighted = int(bin(scale_highlights[self.notes_to_highlight])[2:][note_idx - self.root_note_idx])
if self.notes_or_octaves == "Notes":
color_idx = note_idx - self.root_note_idx
color = rainbow[color_idx]
else:
# print(note_val, divmod(note_val, 12))
color_idx = (octave - 1) % 8
color = octave_colors[color_idx]
if self.scale_text == "Scale Degrees":
note_idx -= self.root_note_idx
note_text = scale_texts[self.scale_text][note_idx]
marker.update(i, note_text, c1x, c1y, r1, c2x, c2y, r2, included, highlighted, color)
def on_size(self, *args):
"""Resize the BoxLayout that holds the fretboard to maintain a guitar neck aspect ratio."""
target_ratio = 60 / 7
width, height = self.size
# Check which size is the limiting factor.
if width / height > target_ratio:
# Window is "wider" than target, so the limitation is the height.
self.ids.keyboard.height = height
self.ids.keyboard.width = height * target_ratio
else:
self.ids.keyboard.width = width
self.ids.keyboard.height = width / target_ratio
def on_keyboard_pos(self, *args):
self.update_canvas()
def on_root_note_idx(self, *args):
self.update_canvas()
def on_mode_filter(self, *args):
self.update_canvas()
def on_scale_text(self, *args):
self.update_note_markers()
def on_notes_to_highlight(self, *args):
self.update_note_markers()
def on_notes_or_octaves(self, *args):
self.update_note_markers()
def on_tuning(self, *args):
# Piano will always use C as lowest note.
lowest_guitar_octave, note_idx = divmod(self.tuning[0], 12)
lowest_piano_octave, _ = divmod(self.note_vals[0], 12)
if lowest_guitar_octave != lowest_piano_octave:
low_c_note_val = lowest_guitar_octave * 12
self.note_vals = [note_val for note_val in range(low_c_note_val, low_c_note_val + 61)]
self.update_note_markers()
### SONG PLAYING METHODS
def prep_play(self, flat_song: List[List[guitarpro.models.Measure]], track_num=0, tempo_mult=1):
flat_track = flat_song[track_num]
self.build_play_instrs(flat_track, tempo_mult)
def build_play_instrs(self, flat_track: List[guitarpro.models.Measure], tempo_mult: float):
play_instrs = []
for gp_measure in flat_track:
for gp_voice in gp_measure.voices[:-1]:
for gp_beat in gp_voice.beats:
beat_instr = self.build_beat_instr(gp_beat, tempo_mult)
play_instrs.append(beat_instr)
for i, beat_instr in enumerate(play_instrs):
for key_idx, key_val in enumerate(beat_instr.keys):
if key_val == -2:
play_instrs[i].keys[key_idx] = 1
self.play_instrs = play_instrs
def build_beat_instr(self, gp_beat: guitarpro.models.Beat, tempo_mult: float):
tempo = gp_beat.voice.measure.tempo.value
spb = 60 / (tempo * tempo_mult)
percent_quarter_note = 4 / gp_beat.duration.value
percent_quarter_note *= (gp_beat.duration.tuplet.times / gp_beat.duration.tuplet.enters)
if gp_beat.duration.isDotted:
percent_quarter_note *= 3/2
elif gp_beat.duration.isDoubleDotted:
percent_quarter_note *= 7/ 4
seconds = spb * percent_quarter_note
keys = [-1] * 60
for gp_note in gp_beat.notes:
if self.note_vals[0] <= gp_note.realValue <= self.note_vals[-1]:
key_idx = gp_note.realValue - self.note_vals[0]
if gp_note.effect.ghostNote or gp_note.type.name == 'tie':
keys[key_idx] = -2
else:
keys[key_idx] = 1
return PianoBeat(seconds=seconds, keys=keys)
def play_thread(self, lead_in):
# The GuitarPro songs' tempo are of form BPM where the B(eat) is always a quarter note.
thread = Thread(target=partial(self._play_thread_animation, lead_in), daemon=True)
thread.start()
def _play_thread_animation(self, lead_in):
self.stopped = False
markers = self.note_markers.children
idx = 0
time.sleep(lead_in)
start = time.time()
goal = start
while not self.stopped:
if idx == len(self.play_instrs):
return
beat_instr = self.play_instrs[idx]
seconds = beat_instr.seconds
for key_idx, key in enumerate(beat_instr.keys):
if key == 1:
self.hit_props[key_idx] = 0
hit_anim = Animation(**{'m{}_anim_prop'.format(key_idx): 1}, duration=seconds)
hit_anim.bind(on_start=markers[key_idx].initiate_hit_animation)
hit_anim.bind(on_progress=markers[key_idx].update_hit_animation)
hit_anim.bind(on_complete=markers[key_idx].end_hit_animation)
self.anim_props[key_idx] = 0
anim = Animation(**{'m{}_anim_prop'.format(key_idx): 1}, duration=seconds)
anim.bind(on_start=markers[key_idx].initiate_animation)
anim.bind(on_progress=markers[key_idx].update_animation)
anim.bind(on_complete=markers[key_idx].end_animation)
hit_anim.start(self)
anim.start(self)
goal += seconds
idx += 1
time.sleep(max(goal - time.time(), 0))
def stop(self):
self.stopped = True
class PianoBeat:
def __init__(self, seconds=0, keys=[-1]*60):
self.seconds = seconds
self.keys = keys
class PianoApp(App):
def build(self):
return Piano()
if __name__ == "__main__":
PianoApp().run()