dualtest

#!/bin/bash -efux
#
# dualtest - test dualmono filters
# Usage: ./dualtest [-acodec pcm_f32le]
#
# Written by Alexey Tourbin.
# This file is distributed as Public Domain.

av0=$(readlink -ev "$0")
av0dir=$(dirname "$av0")

. $av0dir/calc.sh
. $av0dir/dualmono.sh

sox -t sw -r 48000 -c 1 /dev/zero noise.wav synth 60 pinknoise fade q 20 60 20
ffmpeg -i noise.wav                          "$@" -y mono.wav
ffmpeg -i noise.wav -af pan='2c|c0=c0|c1=c0' "$@" -y stereo.wav

m1=$(set -o pipefail; ffmpeg -i mono.wav   -af ebur128,volumedetect,replaygain -f null - |& $av0dir/aacgain15pp m1)
m2=$(set -o pipefail; ffmpeg -i mono.wav   -af replaygain,volumedetect,ebur128 -f null - |& $av0dir/aacgain15pp m2)
s1=$(set -o pipefail; ffmpeg -i stereo.wav -af ebur128,volumedetect,replaygain -f null - |& $av0dir/aacgain15pp s1)
s2=$(set -o pipefail; ffmpeg -i stereo.wav -af replaygain,volumedetect,ebur128 -f null - |& $av0dir/aacgain15pp s2)
eval ${m1:?} ${m2:?} ${s1:?} ${s2:?}
DualMono m1eb1
DualMono m1rg1
DualMono m2rg1
DualMono m2vd1
DualMono m2eb1
Cmp()
{
	local v1=$1 v2; shift
	for v2; do
		Cond "abs(${v1:?} - ${v2:?}) < 0.111"
	done
}
CmpV()
{
	local vars
	vars=$(for v; do echo \$m1$v \$m2$v \$s1$v \$s2$v; done)
	eval Cmp $vars
}
CmpV rg1gain
CmpV rg1peak vd1peak
CmpV vd1q999
CmpV eb1gain
CmpV eb1range
CmpV eb1rlow
: