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#!/bin/sh
#
# Screen capture of Mir devices
#
# Copyright (C) 2013 Canonical
#
# Authors: Jean-Baptiste Lallement <jean-baptiste.lallement@canonical.com>
#
# This program is free software; you can redistribute it and/or modify it #
# under the terms of the GNU General Public License as published by the Free #
# Software Foundation; version 3.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# # details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 51 Franklin
# Street, Fifth Floor, Boston, MA 02110-1301 USA
set -eu
PICDIR=$(mktemp -d /tmp/$(basename $0).XXXXXX)
FBDEV=fb0
ADBOPTS=""
CONVERTOPTS="-alpha off"
REQUIREDPKGS="android-tools-adb imagemagick"
size=""
cleanup() {
#
# Cleanup temporary files
#
[ -d "$PICDIR" ] && rm -Rf "$PICDIR"
}
trap cleanup EXIT INT QUIT ABRT PIPE TERM
usage() {
#
# Print usage and exit
#
cat <<EOF
Usage: $(basename $0) [OPTIONS...] <FILENAME>
Dump /dev/$FBDEV from a touch device and write it to FILENAME
Arguments:
FILENAME Name of the output image, the output format must be supported by
convert from the package imagemagick.
Options
-d,--debug Enable debug
-h,--help This help
-s,--serial SERIAL
Serial number of the device
-z,--resize FACTOR
Resize the image
EOF
exit 1
}
check_prerequisites() {
# Check list of required packages
okay=1
pkgs="$REQUIREDPKGS"
for pkg in $pkgs; do
if ! dpkg-query -W -f '${Status}\t${Package}\n' $pkg 2>/dev/null| grep "ok installed" >/dev/null 2>&1; then
okay=0
echo "E: Package '$pkg' is required and is not installed."
fi
done
if [ $okay -ne 1 ]; then
echo "E: pre-requisites are not met. Exiting!"
exit 1
fi
}
sf_is_running() {
# Return 0 if surface flinger is running then we'll use screencap
# instead
sf=$(adb $ADBOPTS shell pidof surfaceflinger)
if [ -z "$sf" ]; then
return 1
else
echo "I: surfaceflinger detected"
return 0
fi
}
screenshot_mir() {
# Dump framebuffer to capture Mir screenshot
#
# Arguments:
# $1: Size
# $2: Depth
# $3: Device codename
size=$1
depth=$2
device=$3
sfx="rgba"
if [ "$device" = "manta" ]; then
sfx="bgra"
fi
CONVERTOPTS="$CONVERTOPTS -depth $depth -size $size"
echo "I: Dumping $FBDEV ..."
adb shell mirscreencast -m /tmp/mir_socket -n1
adb $ADBOPTS pull /tmp/mir_screencast_$1.$sfx ${PICDIR}/fb
[ ! -e "${PICDIR}/fb" ] && echo "E: Capture failed!" && return
convert $CONVERTOPTS $sfx:${PICDIR}/fb[0] $DST
}
get_device() {
# Get device name
device=$(adb $ADBOPTS shell getprop ro.product.device)
echo "$device"|tr -d '\r'
}
screenshot_sf() {
# Use screencap if surfaceflinger is running
echo "I: Capturing screenshot with screencap ..."
capfile=screencap.png
adb $ADBOPTS shell /system/bin/screencap /tmp/$capfile
adb $ADBOPTS pull /tmp/$capfile ${PICDIR}/$capfile
[ ! -e "${PICDIR}/${capfile}" ] && echo "E: Capture failed!" && return
convert $CONVERTOPTS ${PICDIR}/$capfile $DST
}
SHORTOPTS="hdr:s:z:"
LONGOPTS="help,debug,resolution:,serial:,resize:"
TEMP=$(getopt -o $SHORTOPTS --long $LONGOPTS -- "$@")
eval set -- "$TEMP"
while true ; do
case "$1" in
-h|--help)
usage;;
-d|--debug)
set -x
shift;;
-r|--resolution)
echo "I: The '--resolution' option is deprecated"
shift 2;;
-s|--serial)
ADBOPTS="$ADBOPTS -s $2"
shift 2;;
-z|--resize)
CONVERTOPTS="$CONVERTOPTS -resize $2"
shift 2;;
--) shift;
break;;
*) usage;;
esac
done
[ $# -eq 0 ] && usage
DST=$1
check_prerequisites
# We want to make sure the adb server is up and running. This is a noop if
# the server is already running.
adb start-server
if sf_is_running; then
# Use screencap for surfaceflinger
screenshot_sf
else
# Otherwise just dump the framebuffer
# Set resolution and depth for device
depth=8
size="$(adb shell fbset|sed -n -e's/^mode.*\"\([0-9]\+x[0-9]\+\)[-\"].*$/\1/p')"
device="$(get_device)"
if [ -z "$size" ]; then
echo "E: Resolution not found. Device is not supported."
exit 1
fi
screenshot_mir "$size" "$depth" "$device"
fi
echo "I: Done"
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