class VUmetertwo(object):
def __init__(self):
self.graphics = Graphics(matrix_width, matrix_height)
self.controller = AudioController(channel=1, rate=256000, period=64)
self.color = BLUE
self.inputlength = matrix_height
self.inputs = []
self.offset = 13
self.max = 1250
self.lim = self.max
self.rate = 10
def getaverageof(self, number):
averages = []
for i in range(0, number):
data = self.controller.getinput()
while(data is None):
data = self.controller.getinput()
averages.append(data)
sums = 0
for num in averages:
sums += num
return int(sums / len(averages))
def getinputs(self):
self.inputs = []
sums = 0
for input in range(0, self.inputlength):
data = self.getaverageof(3)
self.inputs.append(data)
sums += data
return sums / len(self.inputs)
def generate(self):
average = self.getinputs()
self.graphics.fill(BLACK)
for i, line in enumerate(self.inputs):
if line > self.max:
self.max = line
else:
if self.max <= self.lim:
self.max = self.lim
else:
self.max -= int((self.max - self.lim) / self.rate)
length = int(translate(average, 0, self.max, 0, matrix_height))
data = int(translate(line, 0, average, 0, length))
if data > 0xff:
self.data = 0xff
if data > self.max:
self.max = data
self.graphics.drawLine(0, i, data - self.offset, i, self.color)
return self.graphics.getSurface()
import alsaaudio
import time
import audioop
from Controllers.Controllers import AudioController
controller = AudioController(channel=1, rate=16000)
inputs = []
while(True):
input = controller.getinput()
if(input):
inputs.append(input)
sum = 0
for i in inputs:
sum += i
average = sum / len(inputs)
if len(inputs) > 10:
inputs = []
print(" " * int(input / 5) + "*")
# time.sleep(0.001)
# inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE, alsaaudio.PCM_NONBLOCK)
# inp.setchannels(1)
# inp.setrate(16000)
# inp.setformat(alsaaudio.PCM_FORMAT_S16_LE)
# inp.setperiodsize(160)