stateful_decoder.sh

#!/bin/bash
#
# Some automation around stateful_decoder.sh to help with testing

OPUS=build/src
PATH=${PATH}:${OPUS}

if [ $# -lt 3 ]; then
    echo "usage (write output to file):"
    echo "  ./stateful_decoder.sh model in.s16 out.wav [optional stateful_decoder.py args]"
    echo "usage (play output with aplay):"
    echo "  ./stateful_decoder.sh model in.s16 - [optional stateful_decoder.py args]"
    exit 1
fi

if [ ! -f $1 ]; then
    echo "can't find $1"
    exit 1
fi
if [ ! -f $2 ]; then
    echo "can't find $2"
    exit 1
fi

model=$1
input_speech=$2
output_speech=$3
features_in=features_in.f32
features_out=features_out.f32
rm -f $features_in $features_out

# eat first 3 args before passing rest to stateful_decoder.py in $@
shift; shift; shift

lpcnet_demo -features ${input_speech} ${features_in}
python3 stateful_decoder.py ${model} ${features_in} ${features_out} "$@"
if [ $output_speech == "-" ]; then
    tmp=$(mktemp)
    lpcnet_demo -fargan-synthesis ${features_out} ${tmp}
    aplay $tmp -r 16000 -f S16_LE 2>/dev/null
elif [ $output_speech != "/dev/null" ]; then
    tmp=$(mktemp)
    lpcnet_demo -fargan-synthesis ${features_out} ${tmp}
    sox -t .s16 -r 16000 -c 1 ${tmp} ${output_speech}
fi