Upgrade libsoxr to 0.1.3

lib-src/libsoxr/tests/phase-test

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+set -e
+
+# SoX Resampler Library       Copyright (c) 2007-15 robs@users.sourceforge.net
+# Licence for this file: LGPL v2.1                  See LICENCE for details.
+
+# Tests varying phase-response.
+
+tool=./3-options-input-fn
+w=$(echo -e "`sox --ver |sed 's/.*SoX v//'` d\n14.4.1 k"|sort -Vr|head -1|sed 's/.* //')
+spec="spectrogram -z160 -Z-20 -X 2000 -w$w -ho"
+ext=f32; e=0
+rate1=48000
+rate2=44100
+
+for n in 1 2; do
+	sox -r $rate1 -n 0.$ext synth 1s sq pad .03 .03  gain -1
+
+	# Test the following combinations:
+	names=(linear-phase intermediate-phase maximum-phase minimum-phase)
+	filters=(standard-filter steep-filter)
+
+	for q in `seq 0 7`; do
+		f=ph-$rate2-q$q-$w
+		name=${names[`expr $q % 4 || true`]}
+		filter=${filters[`expr $q / 4 || true`]}
+		$tool $rate1 $rate2 1 $e $e $q'6' < 0.$ext | sox -c1 -r$rate2 -t $ext - -n $spec $f.png -c "ph-test $filter $name"
+	done
+
+	# Test specific phase-response percentages:
+	for q in `seq 0 20 100`; do
+		f=ph-$rate2-p`printf %03u $q`-$w
+		$tool $rate1 $rate2 1 $e $e 46 0 0 0 $q < 0.$ext | sox -c1 -r$rate2 -t $ext - -n $spec $f.png -c "ph-test phase:${q}%"
+	done
+
+	r=$rate1; rate1=$rate2; rate2=$r
+done
+
+rm 0.$ext