phablet-tools 1.0+14.04.20140416-0ubuntu1 / usr / bin / phablet-screenshot

#!/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"

    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"