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
|
''' Original Audio Visualization '''
import numpy
from PIL import Image, ImageDraw
from PyQt4 import uic, QtGui
from PyQt4.QtGui import QColor
import os, random
class Component:
def __str__(self):
return __doc__
def widget(self, parent):
self.parent = parent
self.visColor = (255,255,255)
page = uic.loadUi(os.path.join(os.path.dirname(os.path.realpath(__file__)), 'original.ui'))
page.comboBox_visLayout.addItem("Classic")
page.comboBox_visLayout.addItem("Split")
page.comboBox_visLayout.addItem("Bottom")
#visLayoutValue = int(self.settings.value('visLayout'))
page.comboBox_visLayout.setCurrentIndex(0)
page.comboBox_visLayout.currentIndexChanged.connect(self.update)
page.lineEdit_visColor.setText('%s,%s,%s' % self.visColor)
page.pushButton_visColor.clicked.connect(lambda: self.pickColor())
btnStyle = "QPushButton { background-color : %s; outline: none; }" % QColor(*self.visColor).name()
page.pushButton_visColor.setStyleSheet(btnStyle)
page.lineEdit_visColor.textChanged.connect(self.update)
self.page = page
return page
def update(self):
self.layout = self.page.comboBox_visLayout.currentIndex()
self.visColor = RGBFromString(self.page.lineEdit_visColor.text())
self.parent.drawPreview()
def version(self):
return 1
def savePreset(self):
return {}
def previewRender(self, previewWorker):
spectrum = numpy.fromfunction(lambda x: 0.008*(x-128)**2, (255,), dtype="int16")
width = int(previewWorker.core.settings.value('outputWidth'))
height = int(previewWorker.core.settings.value('outputHeight'))
return drawBars(width, height, spectrum, self.visColor, self.layout)
def preFrameRender(self, **kwargs):
for kwarg, value in kwargs.items():
exec('self.%s = value' % kwarg)
self.smoothConstantDown = 0.08
self.smoothConstantUp = 0.8
self.lastSpectrum = None
def frameRender(self, moduleNo, frameNo):
self.lastSpectrum = transformData(frameNo, self.completeAudioArray, self.sampleSize,
self.smoothConstantDown, self.smoothConstantUp, self.lastSpectrum)
width = int(self.worker.core.settings.value('outputWidth'))
height = int(self.worker.core.settings.value('outputHeight'))
return drawBars(width, height, self.lastSpectrum, self.visColor, self.layout)
def pickColor(self):
color = QtGui.QColorDialog.getColor()
if color.isValid():
RGBstring = '%s,%s,%s' % (str(color.red()), str(color.green()), str(color.blue()))
btnStyle = "QPushButton { background-color : %s; outline: none; }" % color.name()
self.page.lineEdit_visColor.setText(RGBstring)
self.page.pushButton_visColor.setStyleSheet(btnStyle)
def transformData(i, completeAudioArray, sampleSize, smoothConstantDown, smoothConstantUp, lastSpectrum):
if len(completeAudioArray) < (i + sampleSize):
sampleSize = len(completeAudioArray) - i
numpy.seterr(divide='ignore')
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./sample_rate)
y = abs(spectrum[0:int(paddedSampleSize/2) - 1])
# filter the noise away
# y[y<80] = 0
y = 20 * 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(width, height, spectrum, color, layout):
vH = height-height/8
bF = width / 64
bH = bF / 2
bQ = bF / 4
imTop = Image.new("RGBA", (width, height),(0,0,0,0))
draw = ImageDraw.Draw(imTop)
r, g, b = color
color2 = (r, g, b, 125)
bP = height / 1200
for j in range(0, 63):
draw.rectangle((bH + j * bF, vH+bQ, bH + j * bF + bF, vH + bQ - spectrum[j * 4] * bP - bH), fill=color2)
draw.rectangle((bH + bQ + j * bF, vH , bH + bQ + j * bF + bH, vH - spectrum[j * 4] * bP), fill=color)
imBottom = imTop.transpose(Image.FLIP_TOP_BOTTOM)
im = Image.new("RGBA", (width, height),(0,0,0,0))
if layout == 0:
y = 0 - int(height/100*43)
im.paste(imTop, (0, y), mask=imTop)
y = 0 + int(height/100*43)
im.paste(imBottom, (0, y), mask=imBottom)
if layout == 1:
y = 0 + int(height/100*10)
im.paste(imTop, (0, y), mask=imTop)
y = 0 - int(height/100*10)
im.paste(imBottom, (0, y), mask=imBottom)
if layout == 2:
y = 0 + int(height/100*10)
im.paste(imTop, (0, y), mask=imTop)
return im
def RGBFromString(string):
''' turns an RGB string like "255, 255, 255" into a tuple '''
try:
tup = tuple([int(i) for i in string.split(',')])
if len(tup) != 3:
raise ValueError
for i in tup:
if i > 255 or i < 0:
raise ValueError
return tup
except:
return (255, 255, 255)
|
