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class Music:
def __init__(self, filename):
self.filename = filename
self.w = None
self.sampledata = ''
def openchannel(self):
if self.w is not None:
self.w.close()
import wave
self.w = w = wave.open(open(self.filename, 'rb'), 'r')
self.w_params = (w.getnchannels(),
w.getsampwidth(),
w.getframerate())
chan, width, freq = self.w_params
self.dataleft = w.getnframes() * (chan*width)
self.sampledata = ''
def decode(self, mixer, bytecount):
result = self.sampledata
if not result and self.dataleft > 0:
# decode and convert some more data
chan, width, freq = self.w_params
#framecount = bytecount / (chan*width)
inputdata = self.w.readframes(bytecount) #(framecount)
self.dataleft -= len(inputdata)
result = mixer.resample(inputdata,
freq = freq,
bits = width * 8,
signed = width > 1,
channels = chan,
byteorder = 'little')
#print len(result)
self.sampledata = result[bytecount:]
return result[:bytecount]
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