#!/usr/bin/env python
  
  # Copyright 2012  Brno University of Technology (author: Karel Vesely)
  
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #  http://www.apache.org/licenses/LICENSE-2.0
  #
  # THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
  # WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
  # MERCHANTABLITY OR NON-INFRINGEMENT.
  # See the Apache 2 License for the specific language governing permissions and
  # limitations under the License.
  
  # ./gen_hamm_mat.py
  # script generates diagonal matrix with hamming window values
  
  from __future__ import division
  from __future__ import print_function
  from math import *
  import sys
  
  
  from optparse import OptionParser
  
  def print_on_same_line(text):
      print(text, end=' ')
  
  parser = OptionParser()
  parser.add_option('--fea-dim', dest='dim', help='feature dimension')
  parser.add_option('--splice', dest='splice', help='applied splice value')
  (options, args) = parser.parse_args()
  
  if(options.dim == None):
      parser.print_help()
      sys.exit(1)
  
  dim=int(options.dim)
  splice=int(options.splice)
  
  
  #generate the diagonal matrix with hammings
  M_2PI = 6.283185307179586476925286766559005
  
  dim_mat=(2*splice+1)*dim
  timeContext=2*splice+1
  print('[')
  for row in range(dim_mat):
      for col in range(dim_mat):
          if col!=row:
              print_on_same_line('0')
          else:
              i=int(row/dim)
              print_on_same_line(str(0.54 - 0.46*cos((M_2PI * i) / (timeContext-1))))
      print()
  
  print(']')