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import numpy
from PIL import Image, ImageDraw
from PyQt5 import QtGui, QtCore, QtWidgets
from PyQt5.QtGui import QColor
import os
import time
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./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):
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 = 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')
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