#!/bin/bash 
  
  # Copyright 2014 QCRI (author: Ahmed Ali)
  # Apache 2.0
  
  
  echo $0 "$@"
  
  galeData=$(utils/make_absolute.sh "${@: -1}" ); 
  wavedir=$galeData/wav
  mkdir -p $wavedir
  
  
  length=$(($#-1))
  args=${@:1:$length}
  
  # check that sox is installed 
  which sox  &>/dev/null
  if [[ $? != 0 ]]; then 
   echo "sox is not installed"
   exit 1 
  fi
  
  
  for var in $args; do
    CD=$(basename $var)
    mkdir -p $wavedir/$CD
    find $var -type f -name *.wav | while read file; do
      f=$(basename $file)
      if [[ ! -L "$wavedir/$CD/$f" ]]; then
        ln -sf $file $wavedir/$CD/$f
      fi
  done
    
    #copy and convert the flac to wav
    find $var -type f -name *.flac  | while read file; do
      f=$(basename $file)
      
      if [[ ! -L "$wavedir/$CD/$f" ]]; then
        ln -sf $file $wavedir/$CD/$f
      fi
    done
  done
  
  (
  for w in `find $wavedir -name *.wav` ; do 
    base=`basename $w .wav`
    fullpath=`utils/make_absolute.sh $w`
    echo "$base sox $fullpath -r 16000 -t wav - |"
  done
  
  for w in `find $wavedir -name *.flac` ; do 
    base=`basename $w .flac`
    fullpath=`utils/make_absolute.sh $w`
    echo "$base sox $fullpath -r 16000 -t wav - |"
  done
  )  | sort -u > $galeData/wav.scp
  
  #clean 
  rm -fr $galeData/id$$ $galeData/wav$$
  echo data prep audio succeded
  
  exit 0