From 0d019d3b6f6698d34c3311e0a0ac24e16228863d Mon Sep 17 00:00:00 2001
From: Samuel ORTION <samuel.ortion@orange.fr>
Date: Sun, 3 Jul 2022 08:00:07 +0200
Subject: [PATCH] Added split audio bash script

---
 src/split_audio.sh | 53 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 src/split_audio.sh

diff --git a/src/split_audio.sh b/src/split_audio.sh
new file mode 100644
index 0000000..0be136e
--- /dev/null
+++ b/src/split_audio.sh
@@ -0,0 +1,53 @@
+#!/bin/bash
+
+# Split audio file into multiple files
+# By Samuel ORTION
+# On: 2022-07-03
+
+div() {
+    round=$(awk "BEGIN { rounded = sprintf(\"%.0f\", $1/$2); print rounded } ")
+    echo $round
+}
+
+set -e
+
+PROGRAM_NAME=$0
+
+usage()
+{
+    echo "Usage: $PROGRAM_NAME <input_file> <size_limit>"
+    echo "Example: $PROGRAM_NAME input.wav 300"
+    echo "The size limit is in MB"
+}
+
+
+if [ $# -ne 2 ]; then
+    usage
+    exit 1
+fi
+
+# Get optionsLS
+INPUT_FILE=$1
+SIZE_LIMIT=$2
+FILENAME=$(basename $INPUT_FILE .wav)
+OUTPUT_DIR=$FILENAME
+
+# Check if input file exists
+if [ ! -f $INPUT_FILE ]; then
+    echo "Input file $INPUT_FILE does not exist"
+    exit 1
+fi
+
+# Create an output directory
+mkdir -p $OUTPUT_DIR
+
+# Get file size and duration and compute chunk number
+FILE_SIZE=$(stat -c%s "$INPUT_FILE")
+FILE_SIZE_MB=$(($FILE_SIZE / 1024 / 1024))
+AUDIO_DURATION=$(soxi -D "$INPUT_FILE")
+CHUNK_NUMBER=$(div $FILE_SIZE_MB $SIZE_LIMIT)
+CHUNK_DURATION=$(div $AUDIO_DURATION $CHUNK_NUMBER)
+echo $CHUNK_DURATION
+# CHUNK_DURATION=$(($AUDIO_DURATION / $CHUNK_NUMBER))
+
+ffmpeg -i $INPUT_FILE -f segment -segment_time $CHUNK_DURATION -c copy $OUTPUT_DIR/${FILENAME}_%03d.wav
\ No newline at end of file