1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
import numpy
from PIL import Image, ImageDraw
from copy import copy
from ..component import Component
from ..toolkit.frame import BlankFrame
class Component(Component):
name = "Classic Visualizer"
version = "1.0.0"
def names(*args):
return ["Original Audio Visualization"]
def properties(self):
return ["pcm"]
def widget(self, *args):
self.scale = 20
self.y = 0
super().widget(*args)
self.page.comboBox_visLayout.addItem("Classic")
self.page.comboBox_visLayout.addItem("Split")
self.page.comboBox_visLayout.addItem("Bottom")
self.page.comboBox_visLayout.addItem("Top")
self.page.comboBox_visLayout.setCurrentIndex(0)
self.page.lineEdit_visColor.setText("255,255,255")
self.trackWidgets(
{
"visColor": self.page.lineEdit_visColor,
"layout": self.page.comboBox_visLayout,
"scale": self.page.spinBox_scale,
"y": self.page.spinBox_y,
"smooth": self.page.spinBox_smooth,
},
colorWidgets={
"visColor": self.page.pushButton_visColor,
},
relativeWidgets=[
"y",
],
)
def previewRender(self):
spectrum = numpy.fromfunction(
lambda x: float(self.scale) / 2500 * (x - 128) ** 2,
(255,),
dtype="int16",
)
return self.drawBars(
self.width, self.height, spectrum, self.visColor, self.layout
)
def preFrameRender(self, **kwargs):
super().preFrameRender(**kwargs)
self.smoothConstantDown = 0.08 + 0 if not self.smooth else self.smooth / 15
self.smoothConstantUp = 0.8 - 0 if not self.smooth else self.smooth / 15
self.lastSpectrum = None
self.spectrumArray = {}
for i in range(0, len(self.completeAudioArray), self.sampleSize):
if self.canceled:
break
self.lastSpectrum = self.transformData(
i,
self.completeAudioArray,
self.sampleSize,
self.smoothConstantDown,
self.smoothConstantUp,
self.lastSpectrum,
)
self.spectrumArray[i] = copy(self.lastSpectrum)
progress = int(100 * (i / len(self.completeAudioArray)))
if progress >= 100:
progress = 100
pStr = "Analyzing audio: " + str(progress) + "%"
self.progressBarSetText.emit(pStr)
self.progressBarUpdate.emit(int(progress))
def frameRender(self, frameNo):
arrayNo = frameNo * self.sampleSize
return self.drawBars(
self.width,
self.height,
self.spectrumArray[arrayNo],
self.visColor,
self.layout,
)
def transformData(
self,
i,
completeAudioArray,
sampleSize,
smoothConstantDown,
smoothConstantUp,
lastSpectrum,
):
if len(completeAudioArray) < (i + sampleSize):
sampleSize = len(completeAudioArray) - i
window = numpy.hanning(sampleSize)
data = completeAudioArray[i : i + sampleSize][::1] * window
paddedSampleSize = 2048
paddedData = numpy.pad(data, (0, paddedSampleSize - sampleSize), "constant")
spectrum = numpy.fft.fft(paddedData)
sample_rate = 44100
frequencies = numpy.fft.fftfreq(len(spectrum), 1.0 / sample_rate)
y = abs(spectrum[0 : int(paddedSampleSize / 2) - 1])
# filter the noise away
# y[y<80] = 0
y = self.scale * numpy.log10(y)
y[numpy.isinf(y)] = 0
if lastSpectrum is not None:
lastSpectrum[y < lastSpectrum] = y[
y < lastSpectrum
] * smoothConstantDown + lastSpectrum[y < lastSpectrum] * (
1 - smoothConstantDown
)
lastSpectrum[y >= lastSpectrum] = y[
y >= lastSpectrum
] * smoothConstantUp + lastSpectrum[y >= lastSpectrum] * (
1 - smoothConstantUp
)
else:
lastSpectrum = y
x = frequencies[0 : int(paddedSampleSize / 2) - 1]
return lastSpectrum
def drawBars(self, width, height, spectrum, color, layout):
vH = height - height / 8
bF = width / 64
bH = bF / 2
bQ = bF / 4
imTop = BlankFrame(width, height)
draw = ImageDraw.Draw(imTop)
r, g, b = color
color2 = (r, g, b, 125)
bP = height / 1200
for j in range(0, 63):
x0 = bH + j * bF
y0 = vH + bQ
y1 = vH + bQ - spectrum[j * 4] * bP - bH
x1 = bH + j * bF + bF
draw.rectangle(
(
x0,
y0 if y0 < y1 else y1,
x1 if x1 > x0 else x0,
y1 if y0 < y1 else y0,
),
fill=color2,
)
x0 = bH + bQ + j * bF
y0 = vH
x1 = bH + bQ + j * bF + bH
y1 = vH - spectrum[j * 4] * bP
draw.rectangle(
(
x0,
y0 if y0 < y1 else y1,
x1 if x1 > x0 else x0,
y1 if y0 < y1 else y0,
),
fill=color,
)
imBottom = imTop.transpose(Image.Transpose.FLIP_TOP_BOTTOM)
im = BlankFrame(width, height)
if layout == 0: # Classic
y = self.y - int(height / 100 * 43)
im.paste(imTop, (0, y), mask=imTop)
y = self.y + int(height / 100 * 43)
im.paste(imBottom, (0, y), mask=imBottom)
if layout == 1: # Split
y = self.y + int(height / 100 * 10)
im.paste(imTop, (0, y), mask=imTop)
y = self.y - int(height / 100 * 10)
im.paste(imBottom, (0, y), mask=imBottom)
if layout == 2: # Bottom
y = self.y + int(height / 100 * 10)
im.paste(imTop, (0, y), mask=imTop)
if layout == 3: # Top
y = self.y - int(height / 100 * 10)
im.paste(imBottom, (0, y), mask=imBottom)
return im
def command(self, arg):
if "=" in arg:
key, arg = arg.split("=", 1)
try:
if key == "color":
self.page.lineEdit_visColor.setText(arg)
return
elif key == "layout":
if arg == "classic":
self.page.comboBox_visLayout.setCurrentIndex(0)
elif arg == "split":
self.page.comboBox_visLayout.setCurrentIndex(1)
elif arg == "bottom":
self.page.comboBox_visLayout.setCurrentIndex(2)
elif arg == "top":
self.page.comboBox_visLayout.setCurrentIndex(3)
return
elif key == "scale":
arg = int(arg)
self.page.spinBox_scale.setValue(arg)
return
elif key == "y":
arg = int(arg)
self.page.spinBox_y.setValue(arg)
return
except ValueError:
print("You must enter a number.")
quit(1)
super().command(arg)
def commandHelp(self):
print("Give a layout name:\n layout=[classic/split/bottom/top]")
print("Specify a color:\n color=255,255,255")
print("Visualizer scale (20 is default):\n scale=number")
print("Y position:\n y=number")
|
