initial version of check_ISM.sh

#!/usr/bin/env bash

#   (C) 2022-2025 IVAS codec Public Collaboration with portions copyright Dolby International AB, Ericsson AB,

#   Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Huawei Technologies Co. LTD.,

#   Koninklijke Philips N.V., Nippon Telegraph and Telephone Corporation, Nokia Technologies Oy, Orange,

#   Panasonic Holdings Corporation, Qualcomm Technologies, Inc., VoiceAge Corporation, and other

#   contributors to this repository. All Rights Reserved.

#   This software is protected by copyright law and by international treaties.

#   The IVAS codec Public Collaboration consisting of Dolby International AB, Ericsson AB,

#   Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V., Huawei Technologies Co. LTD.,

#   Koninklijke Philips N.V., Nippon Telegraph and Telephone Corporation, Nokia Technologies Oy, Orange,

#   Panasonic Holdings Corporation, Qualcomm Technologies, Inc., VoiceAge Corporation, and other

#   contributors to this repository retain full ownership rights in their respective contributions in

#   the software. This notice grants no license of any kind, including but not limited to patent

#   license, nor is any license granted by implication, estoppel or otherwise.

#   Contributors are required to enter into the IVAS codec Public Collaboration agreement before making

#   contributions.

#   This software is provided "AS IS", without any express or implied warranties. The software is in the

#   development stage. It is intended exclusively for experts who have experience with such software and

#   solely for the purpose of inspection. All implied warranties of non-infringement, merchantability

#   and fitness for a particular purpose are hereby disclaimed and excluded.

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#   the United Nations Convention on Contracts on the International Sales of Goods.

# Usage: check_ISM.sh audio.wav ism_metadata.0.csv [... ism_metadata.4.csv]

# Compares the number of audio frames against the number of frames in the object metadata

# Requires: InfoAudio

if (( $# < 2 || $# > 5 )); then

    echo ""

    echo "Usage: $0 audio.wav ism_metadata.0.csv [... ism_metadata.4.csv]" >&2

    echo "file_name;success;audio_20ms_aligned;no_audio_frames;no_object_frames" >&2

    exit 1

fi

InfoAudio=InfoAudio

audio_file=$1

metadata_files=("${@:2}")

line_counts=()

# getting all info from InfoAudio - storing in res

res=`$InfoAudio "$audio_file"`

# paring res

sampleFreq=`echo "$res" | grep -m1 "Sampling frequency" | sed -e 's/\([a-zA-Z\. ]*: \)\([0-9]*\)\(.*\)/\2/g'`

frameSize=$(( sampleFreq / 50 ))

numberSamples=`echo "$res" | grep -m1 "No. frames" | sed -e 's/\([a-zA-Z\. ]*: \)\([0-9]*\)\(.*\)/\2/g'`

numberSampleFrames=$(( numberSamples / frameSize ))

aligned20ms=false

remainder=$(expr $numberSamples % 960)

if [ $remainder -eq 0 ]; then

    aligned20ms=true

fi

# iterate over metadata-files

for file in "${metadata_files[@]}"; do

    if [[ -r $file ]]; then

	# count number of lines

	lines=$(wc -l < "$file")

	line_counts+=("$lines")

    else

	echo "Warning: File '$file' not found or not readable" >&2

	line_counts+=(0)

    fi

done

success=true

if [[ "$aligned20ms" == "false" ]]; then

    success=false

fi

no_object_frames=""

for i in "${!line_counts[@]}"; do

    count="${line_counts[i]//[[:space:]]/}" # also remove any whitespace 

    no_object_frames+=";$count"

    if (( count != numberSampleFrames )); then

	success=false

    fi

done

# echo "file_name;success;audio_20ms_aligned;no_audio_frames;no_object_frames"

echo "${audio_file};${success};${aligned20ms};${numberSampleFrames}${no_object_frames}"