QA android screen recording script

gistfile1.txt

#!/bin/bash
hash adb &> /dev/null
if [ $? -eq 1 ]; then
    echo "adb not found, please contact your favourite android dev for help"
	exit 1
fi

if [ -z ${HOME} ]; then 
	echo "HOME env var not set, please contact your favourite android dev for help"
	exit 1
fi


echo "Select video quality, 1 digit folowed by [ENTER]:"
echo "1) Normal quality (DEFAULT)"
echo "2) High quality"
echo "3) Full display resolution"

read -s -n 1 QUALITY

if [[ $QUALITY = "" ]]; then 
    QUALITY=1
fi

echo
echo "Selected quality: $QUALITY"
echo

if [[ ! $QUALITY =~ ^[0-9]+$ ]] ; then
    echo "Invalid input, use please only 1,2,3"
    exit
fi

if ! ([ $QUALITY -eq 1 ] || [ $QUALITY -eq 2 ] || [ $QUALITY -eq 3 ]) ; then 
	echo "nOK"
fi

RES=`adb shell wm size | awk '{print $3}'`
RES_ARR=(${RES//x/ })
DISP_WIDTH=${RES_ARR[0]}
DISP_HEIGHT=${RES_ARR[1]}
BITRATE=4000000

while :
do
  case $QUALITY in
	1)
		DISP_WIDTH=$((DISP_WIDTH / 3))
		DISP_HEIGHT=$((DISP_HEIGHT / 3))
		BITRATE=$((BITRATE / 4))
		break;
		;;
	2)
		DISP_WIDTH=$((DISP_WIDTH / 2))
		DISP_HEIGHT=$((DISP_HEIGHT / 2))
		BITRATE=$((BITRATE / 3))
		break;
		;;
	3)
		break;
		;;
  esac
done


FILE=`date "+%Y%m%d_%H%M%S"`
#start recording
adb shell screenrecord "/sdcard/android_$FILE.mp4 --size ${DISP_WIDTH}x${DISP_HEIGHT} --bit-rate $BITRATE" & > /dev/null 2>&1
echo "Recording in process (max length is 3mins)... (press ANY key to stop)"
#wait until something is pressed
read -s -n 1
#stop recording
ps -ef | grep '\d adb shell screenrecord' | awk '{print $2}' | xargs kill -1 2>&1 >/dev/null
#if we don't sleep, video is not readable, so i guess some race condition
sleep 0.5
#pull file to desktop
TARGET_FILE=$HOME/Desktop/android_$FILE.mp4
adb pull "/sdcard/android_$FILE.mp4" "$TARGET_FILE" 2>&1 >/dev/null

echo "Done, file:$TARGET_FILE"