ref: a4b089c6106093aadfc27d0e8a68761305e83838
dir: /python/aubiocut/
#!/usr/bin/python
""" this file was written by Paul Brossier
it is released under the GNU/GPL license.
"""
from aubio.aubioclass import *
import sys
bufsize = 1024
hopsize = bufsize/2
def cutfile(filein,onsets):
frameread = 0
zerothres = 0.002
readsize = hopsize
filei = sndfile(filein)
framestep = hopsize/(filei.samplerate()+0.)
channels = filei.channels()
newname = "%s%f%s" % ("/tmp/",0.0000000,filein[-4:])
fileo = sndfile(newname,model=filei)
myvec = fvec(hopsize,channels)
mycopy = fvec(hopsize,channels)
while(readsize==hopsize):
readsize = filei.read(hopsize,myvec)
# write to current file
if len(onsets) and frameread >= onsets[0]:
onsets.pop(0)
# write up to 1st zero crossing
zerocross = 0
while ( abs( myvec.get(zerocross,0) ) > zerothres ):
zerocross += 1
writesize = fileo.write(zerocross,myvec)
fromcross = 0
while (zerocross < readsize):
for i in range(channels):
mycopy.set(myvec.get(zerocross,i),fromcross,i)
fromcross += 1
zerocross += 1
del fileo
fileo = sndfile("%s%s%f%s%s" %
(filein.split(".")[0].split("/")[-1],".",
frameread*framestep,".",filein.split(".")[-1]),model=filei)
writesize = fileo.write(fromcross,mycopy)
else:
writesize = fileo.write(readsize,myvec)
frameread += 1
del fileo
filename = sys.argv[1]
threshold = sys.argv[2]
onsets = getonsets(filename,threshold)
cutfile(filename,onsets)