audio-simple.sh

#!/bin/bash
#
# This test checks on analog audio:
# recording mic/line
# playing the recorded file and playing a wav test-file
#
# This test checks if it can play on hdmi-audio (not on apalis-imx6 due to
# lacking upstream support)

#source ./tests/testHelpers.sh
somfamily=verdin
reportResult()
{
	echo reportResult $*

} 

test_name="audio-simple"
tmp_dir="$(mktemp -d)"

# This function takes one argument which is a non ambiguous substring of the
# name and returns the number of the card associated with it using
# /proc/asound/cards
# $1 name e.g. "sgtl5000audio"
# return 0 on success, 1 otherwise (string not found)
get_card_number_by_name()
{
	local name=$1

	grep -Po -m1 "^ \K\d(?= \[[\w ]+\]\:.*${name})" /proc/asound/cards
}

# records a file and checks if the expected time is within a second
# $1 card name to play on (e.g. "hdmi")
# $2 channels
# $3 time in seconds
# $4 record filename
record_and_check_size()
{
	local card=$1
	local channels=$2
	local time=$3
	local file=$4
	local filename

	filename=$(basename "$file")

	arecord -D hw:"$card",0 -c $channels -f S16_LE -r 44100 -t wav -d $time $file
	reportResult $? "${test_name}-arecord-card${card}-${channels}ch-${filename}"

	# WAV header size 44bytes
	expected_size=$(( 44100*16*channels*time/8 + 44 ))
	real_size=$(stat -c%s "$file")

	# WAV file is aligned to even size, for 8bit mono recording this check would be not correct.
	# See https://github.com/certik/record/blob/master/arecord.c#L970
	[ "$expected_size" -eq "$real_size" ]
	reportResult $? "${test_name}-arecord-card${card}-${channels}ch-${filename}-sizecheck" "$real_size" "bytes"
}

# Plays a file and checks if the expected time is within a second
# $1 file to play
# $2 card name to play on (e.g. "hdmi")
# $3 expected time in seconds
# return 0 on success, 1 otherwise
play_and_check_time()
{
	local file=$1
	local cardname=$2
	local time_desired=$3
	local cardnumber
	local time_actual
	local result
	local filename

	filename=$(basename "$file")

	cardnumber=$(get_card_number_by_name "$cardname")
	reportResult $? "${test_name}-get_card_number_of-${cardname}"

	SECONDS=0
	time aplay -D hw:"$cardnumber",0 "$file"
	result=$?
	time_actual=$SECONDS
	reportResult $result "${test_name}-${cardname}-aplay-${filename}"

	[ "$time_actual" -ge $((time_desired-1)) ] && \
	[ "$time_actual" -le $((time_desired+2)) ]
	reportResult $? "${test_name}-${cardname}-playtime-${filename}" "$time_actual" "s"
}

# This function does record from mic and linein and try to play everything plus
# playing Gong.wav
# $1 cardname
# no return value, does fail if check fails
check_audio()
{
	local cardname=$1

	card=$(get_card_number_by_name "$cardname")
	reportResult $? "${test_name}-get_card_number_of-${cardname}"

	if [ "$cardname" = "wm8904" ]; then
		amixer -c "$card" set 'Left Capture Inverting Mux' 'IN1L'
		reportResult $? "${test_name}-${cardname}-amixer-IN1L"
		amixer -c "$card" set 'Right Capture Inverting Mux' 'IN1R'
		reportResult $? "${test_name}-${cardname}-amixer-IN1R"
		amixer -c "$card" set 'Capture' '31'
		reportResult $? "${test_name}-${cardname}-amixer-capture-31"
		# It seems WM8904 cannot record 1 channel
		record_and_check_size "$card" 2 3 "${tmp_dir}/mic.wav"

		amixer -c "$card" set 'Left Capture Inverting Mux' 'IN2L'
		reportResult $? "${test_name}-${cardname}-amixer-IN2L"
		amixer -c "$card" set 'Right Capture Inverting Mux' 'IN2R'
		reportResult $? "${test_name}-${cardname}-amixer-IN2R"
		amixer -c "$card" set 'Capture' '16'
		reportResult $? "${test_name}-${cardname}-amixer-capture-16"
		record_and_check_size "$card" 2 5 "${tmp_dir}/line.wav"

		play_and_check_time "${tmp_dir}/mic.wav" "$cardname" 3
		play_and_check_time "${tmp_dir}/line.wav" "$cardname" 5

	elif [ "$cardname" = "sgtl5000" ]; then
		amixer -c "$card" set "Capture Mux" "MIC_IN"
		reportResult $? "${test_name}-${cardname}-amixer-MIC_IN"
		record_and_check_size "$card" 1 3 "${tmp_dir}/mic.wav"

		amixer -c "$card" set "Capture Mux" "LINE_IN"
		reportResult $? "${test_name}-${cardname}-amixer-LINE_IN"
		record_and_check_size "$card" 2 5 "${tmp_dir}/line.wav"

		play_and_check_time "${tmp_dir}/mic.wav" "$cardname" 3
		play_and_check_time "${tmp_dir}/line.wav" "$cardname" 5
	fi

	play_and_check_time /home/root/sound/Gong.wav "$cardname" 6
}

# Do not execute this test on the following modules:
# apalis-tk1: I didn't even bother trying to make it work
# colibri-imx6ull*: has no soundcard
if [ "$machine" = "apalis-tk1" ] ||  \
   [ "$machine" = "colibri-imx6ull" ] || \
   [ "$machine" = "colibri-imx6ull-emmc" ]
then
	lava-test-case "$test_name" --result skip
	exit
fi

# log available cards
echo "Entries of /proc/asound/cards:"
cat /proc/asound/cards

case "$somfamily" in
	"apalis")
		check_audio sgtl5000
		if [ "$machine" != "apalis-imx6" ]; then
		# Do not check hdmi-audio on apalis-imx6 as upstream lacks
		# support for this.
			check_audio hdmi
		fi
		;;
	"colibri")
		check_audio sgtl5000
		;;
	"verdin")
		check_audio wm8904
		;;
esac