#!/usr/bin/env bash

# fix segmentation fault reported in https://github.com/k2-fsa/icefall/issues/674
export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=python

set -eou pipefail

nj=15
stage=-1
stop_stage=100

# We assume dl_dir (download dir) contains the following
# directories and files. Most of them can't be downloaded automatically
# as they are not publically available and require a license purchased
# from the LDC.
#
#  - $dl_dir/musan
#      This directory contains the following directories downloaded from
#       http://www.openslr.org/17/
#
#     - music
#     - noise
#     - speech

dl_dir=./download
# swbd1_dir="/export/corpora3/LDC/LDC97S62"
swbd1_dir=./download/LDC97S62/

# eval2000_dir contains the following files and directories
# downloaded from LDC website:
#  - LDC2002S09
#       - hub5e_00
#  - LDC2002T43
#       - reference
eval2000_dir="/export/corpora2/LDC/eval2000"

rt03_dir="/export/corpora/LDC/LDC2007S10"
fisher_dir="/export/corpora3/LDC/LDC2004T19"

. shared/parse_options.sh || exit 1

# vocab size for sentence piece models.
# It will generate data/lang_bpe_xxx,
# data/lang_bpe_yyy if the array contains xxx, yyy
vocab_sizes=(
    # 5000
    # 2000
    1000
    500
)

# All files generated by this script are saved in "data".
# You can safely remove "data" and rerun this script to regenerate it.
mkdir -p data

log() {
    # This function is from espnet
    local fname=${BASH_SOURCE[1]##*/}
    echo -e "$(date '+%Y-%m-%d %H:%M:%S') (${fname}:${BASH_LINENO[0]}:${FUNCNAME[1]}) $*"
}

log "swbd1_dir: $swbd1_dir"
log "eval2000_dir: $eval2000_dir"
log "rt03_dir: $rt03_dir"

if [ $stage -le 1 ] && [ $stop_stage -ge 1 ]; then
    log "Stage 1 I: Compute narrowband fbank for SwitchBoard"
    if [ ! -e data/fbank_nb/.swbd.done ]; then
        mkdir -p data/fbank_nb/swbd_split${num_splits}/
        for index in $(seq 1 16); do
            ./local/compute_fbank_swbd_nb.py --split-index ${index} &
        done
        wait
        pieces=$(find data/fbank_nb/swbd_split${num_splits} -name "swbd_cuts_all.*.jsonl.gz")
        lhotse combine $pieces data/fbank_nb/swbd_cuts_all.jsonl.gz
        touch data/fbank_nb/.swbd.done
    fi
fi

if [ $stage -le 1 ] && [ $stop_stage -ge 1 ]; then
    log "Stage 1 II: Compute narrowband fbank for eval2000"
    if [ ! -e data/fbank_nb/.eval2000.done ]; then
        mkdir -p data/fbank_nb/eval2000/
        ./local/compute_fbank_eval2000_nb.py 
        touch data/fbank_nb/.eval2000.done
    fi
fi

if [ $stage -le 2 ] && [ $stop_stage -ge 2 ]; then
    log "Stage 2: Compute narrowband fbank for musan"
    mkdir -p data/fbank_nb/
    if [ ! -e data/fbank_nb/.musan.done ]; then
        ./local/compute_fbank_musan_nb.py
        touch data/fbank_nb/.musan.done
    fi
fi