#!/bin/bash
  # Copyright 2015  Brno University of Technology (Author: Karel Vesely)
  # Licensed under the Apache License, Version 2.0 (the "License")
  
  # Extract lattice-depth for each frame.
  
  # Begin configuration
  cmd=run.pl
  # End configuration
  
  echo "$0 $@"  # Print the command line for logging
  
  [ -f path.sh ] && . ./path.sh # source the path.
  . parse_options.sh || exit 1;
  
  if [ $# != 2 ]; then
     echo "usage: $0 [opts] <dir-with-lats> <out-dir>"
     echo "main options (for others, see top of script file)"
     echo "  --config <config-file>          # config containing options"
     echo "  --cmd"
     exit 1;
  fi
  
  set -euo pipefail
  
  latdir=$1
  dir=$2
  
  [ ! -f $latdir/lat.1.gz ] && echo "Missing $latdir/lat.1.gz" && exit 1
  nj=$(cat $latdir/num_jobs)
  
  # Get the pdf-posterior vectors,
  $cmd JOB=1:$nj $dir/log/lattice_depth_per_frame.JOB.log \
    lattice-depth-per-frame "ark:gunzip -c $latdir/lat.JOB.gz |" ark,t:$dir/lattice_frame_depth.JOB.ark
  # Merge,
  for ((n=1; n<=nj; n++)); do cat $dir/lattice_frame_depth.${n}.ark; done >$dir/lattice_frame_depth.ark
  rm $dir/lattice_frame_depth.*.ark
  
  # Done!