From d1a1924ce8b46e774808296db1542ac889fc246d Mon Sep 17 00:00:00 2001
From: Markus Multrus <markus.multrus@iis.fraunhofer.de>
Date: Mon, 12 Jun 2023 16:43:10 +0200
Subject: [PATCH] add scripts to pad files to 20ms blocks

---
 other/pad_file_20ms.sh | 76 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100755 other/pad_file_20ms.sh

diff --git a/other/pad_file_20ms.sh b/other/pad_file_20ms.sh
new file mode 100755
index 00000000..92be20ae
--- /dev/null
+++ b/other/pad_file_20ms.sh
@@ -0,0 +1,76 @@
+#!/bin/bash
+
+
+#   (C) 2022-2023 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.
+
+#   Any dispute, controversy or claim arising under or in relation to providing this software shall be
+#   submitted to and settled by the final, binding jurisdiction of the courts of Munich, Germany in
+#   accordance with the laws of the Federal Republic of Germany excluding its conflict of law rules and
+#   the United Nations Convention on Contracts on the International Sales of Goods.
+
+
+if [ $# -lt 2 ]
+then
+  echo "Usage: $0 in.wav out.wav"
+  echo "Aligns in.wav to 20ms blocks by appending zero samples; output is stored in out.wav"
+  echo "Requires: InfoAudio, CopyAudio"
+  exit 1
+fi
+
+file_in=$1
+file_out=$2
+
+InfoAudio=InfoAudio
+CopyAudio=CopyAudio
+
+# getting all info from InfoAudio - storing in res
+res=`$InfoAudio $file_in`
+
+# paring res
+sampleFreq=`echo "$res" | grep -m1 "Sampling frequency" | sed -e 's/\([a-zA-Z\. ]*: \)\([0-9]*\)\(.*\)/\2/g'`
+
+numberSamples=`echo "$res" | grep -m1 "No. frames" | sed -e 's/\([a-zA-Z\. ]*: \)\([0-9]*\)\(.*\)/\2/g'`
+
+remainder=$(expr $numberSamples % 960)
+samplesToPad=0
+
+if [ $remainder -eq 0 ]; then
+    # no padding required, just copy files
+    cp $file_in $file_out
+else
+    samplesToPad=$(expr 960 - $remainder)
+    limit=$(expr $samplesToPad - 1)
+    
+    # copy required number of sampled to pad into temp file, scale with 0 gain --> results in silence
+    tmp=`mktemp`
+    $CopyAudio -l 0:$limit -g 0 $file_in $tmp
+
+    # concatenate original file with silence block
+    $CopyAudio --concatenate $file_in $tmp $file_out
+
+    # delete tmp file
+    rm -f $tmp
+fi
+
+
-- 
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