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pixelfloot/pixelfloot.sh

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#!/bin/bash
# pixelfloot - a pixelflut client written in bash
# this script was made during the 37c3
# pixelflut.la10cy.net - 130.185.104.31
# my small pixelflut test server, feel free to have fun with it! :)
# You can watch the board by VNC at port 5900, max connections are 2
test -z "$IPFLOOT" && IPFLOOT="130.185.104.31"
test -z "$FLOOTPORT" && FLOOTPORT="1234"
########################################################################
IMGFILE="$2"
# remove file extension
FNAME="${2%.*}"
# remove everything before the slash, so we get the filename without
# path and extension
FNAME="${FNAME##*/}"
PPMFILE="$FNAME.ppm"
HEXPPM="images/$FNAME.hexppm"
PIXLIST="/tmp/$FNAME.pixlist"
ANIFILE="/tmp/$FNAME"
SHUFMODE="$3"
FLOOTSRUNNING=0
test -z "$FLOOTFORKS" && FLOOTFORKS="1"
test -z $X_MAX && X_MAX=800
test -z $Y_MAX && Y_MAX=600
test -z $X && X=0
test -z $Y && Y=0
## bounce
XDIR=0
YDIR=0
test -z "$BOUNCESTEP" && BOUNCESTEP=2
## end bounce
OFFSET_SHM="/dev/shm/pxlflt-offset"
## ANIMATION
# convert -coalesce animation.gif target.png -> produces target1.png, target2.png, ..
# /dev/shm/foo to store frame counter
#
# GifFileFormat - gif, jpg, png || detect which fileformat IMGFILE is
#test -z "$ANIMATION" && ANIMATION="false"
#
# loadLOL loads every single frame into an array field WHEN ANIMATION is true
# loadLOL sets No of frames in LOLFIELDS
#
# flootworker looks in while loop which value in /dev/shm/frametick is.
# /dev/shm/frametick contains which frame from LOL to draw.
# function frametick() gets started in background when ANIMATION is true
# and gets started before the flootworker get started
# frametick writes the no of frame to draw into /dev/shm/frametick
# to not draw too fast, there is a sleep in frametick which waits for
# FRAMETICKTIME seconds. Values are float, down to lowest value 0.001
# Only one of ANIMATION or LARGE can be true, not both.
FRAMETOPICK_SHM="/dev/shm/pxlflt-frametopick"
## END ANIMATION
## old crap
declare -a PIXMAP
## end old crap
declare -a LOL
declare -a LOLPID
## TODOS
#
# - Put OFFSET into /dev/shm/ so each worker do not have to count OFFSET
# for itself and we prevent worker from drifting apart when drawing.
# - get dimensions of pic with "identify" (imagemagick part)
# - get dimensions of the pixelflut board
# colors for colored output 8)
RED="\e[31m"
GREEN="\e[32m"
YELLOW="\e[33m"
ENDCOLOR="\e[0m"
function message() {
case $1 in
warn)
MESSAGE_TYPE="${YELLOW}WARN${ENDCOLOR}"
;;
error)
MESSAGE_TYPE="${RED}ERROR${ENDCOLOR}"
;;
info|*)
MESSAGE_TYPE="${GREEN}INFO${ENDCOLOR}"
;;
esac
if [ "$1" == "info" ] || [ "$1" == "warn" ] || [ "$1" == "error" ]
then
MESSAGE=$2
else
MESSAGE=$1
fi
echo -e "[${MESSAGE_TYPE}] $MESSAGE"
}
error ()
{
message error "${RED}ERROR!!${ENDCOLOR}"
exit 1
}
###### OLDFOOO ######
# https://gist.github.com/nberlette/e3e303a81f2c41927bf4fe90fb89d97f
function hex() {
printf "%02X%02X%02X" ${*//','/' '}
}
gen_pixmap() {
y=0
while read -r LINE
do
if [ "$y" -gt 2 ]
then
for x in $(seq 1 $x_ppm)
do
REDindex=$((x*3-2))
GREENindex=$((x*3+1-2))
BLUEindex=$((x*3+2-2))
REDvalue="$(echo $LINE| cut -d ' ' -f${REDindex})"
GREENvalue="$(echo $LINE| cut -d ' ' -f${GREENindex})"
BLUEvalue="$(echo $LINE| cut -d ' ' -f${BLUEindex})"
PIXELcolor="$(hex ${REDvalue} $GREENvalue $BLUEvalue)"
PIXMAP[$y]="${PIXMAP[$y]} $PIXELcolor"
done
echo "please wait"
echo ${PIXMAP[$y]} >> $HEXPPM
elif [ "$y" -eq 1 ]
then
x_ppm="$(echo "$LINE"|cut -d ' ' -f1)"
fi
y=$((y+1))
#~ for col in $LINE
#~ do
#~ case $count in
#~ 0) RED="$(hex $col)"
#~ ;;
#~ 1) GREEN="$(hex $col)"
#~ ;;
#~ 2) BLUE="$(hex $col)"
#~ ;;
#~ esac
#~ count=$((count+1))
#~ test $count -ge 2 && count=0
#~ done
done < "$PPMFILE"
}
draw_pixmap() {
y=1
test -z $x_ppm && echo "x_ppm missing" && exit 1
while read -r LINE
do
for x in $(seq 1 $x_ppm)
do
# when Color is FF00FE draw rainbow background
if [[ "$(echo $LINE | cut -d ' ' -f$x)" != "FF00FE" ]]
then
echo "please wait"
echo "PX $x $y $(echo $LINE | cut -d ' ' -f$x)" >> $PIXLIST
# magnify double size
#echo "PX $((x*2)) $((y*2)) $(echo $LINE | cut -d ' ' -f$x)" >> $PIXLIST
#echo "PX $((x*2+1)) $((y*2)) $(echo $LINE | cut -d ' ' -f$x)" >> $PIXLIST
#echo "PX $((x*2)) $((y*2+1)) $(echo $LINE | cut -d ' ' -f$x)" >> $PIXLIST
#echo "PX $((x*2+1)) $((y*2+1)) $(echo $LINE | cut -d ' ' -f$x)" >> $PIXLIST
else
if [ "$y" -lt 32 ]
then
RAINBOWCOLOR="$(hex 0 0 255)"
elif [ "$y" -lt 64 ]
then
RAINBOWCOLOR="$(hex 0 255 255)"
elif [ "$y" -lt 94 ]
then
RAINBOWCOLOR="$(hex 0 255 0)"
elif [ "$y" -lt 126 ]
then
RAINBOWCOLOR="$(hex 255 255 0)"
else
RAINBOWCOLOR="$(hex 255 0 0)"
fi
#~ if [ "$y" -lt 16 ]
#~ then
#~ RAINBOWCOLOR="$(hex 0 0 $(((y+1)*16)))"
#~ elif [ "$y" -lt 32 ]
#~ then
#~ RAINBOWCOLOR="$(hex 0 $(((y-16)*16)) 255)"
#~ elif [ "$y" -lt 48 ]
#~ then
#~ RAINBOWCOLOR="$(hex 0 $((y*16)) $((16-(y-32)*16)))"
#~ elif [ "$y" -lt 64 ]
#~ then
#~ RAINBOWCOLOR="$(hex $((y*16)) $((y*16)) 0)"
#~ else
#~ RAINBOWCOLOR="$(hex $((y*16)) 0 0)"
#~ fi
echo "please wait for rainbow"
echo "PX $((x*2)) $((y*2)) $RAINBOWCOLOR" >> $PIXLIST
echo "PX $((x*2+1)) $((y*2)) $RAINBOWCOLOR" >> $PIXLIST
echo "PX $((x*2)) $((y*2+1)) $RAINBOWCOLOR" >> $PIXLIST
echo "PX $((x*2+1)) $((y*2+1)) $RAINBOWCOLOR" >> $PIXLIST
fi
done
y=$((y+1))
done < "$HEXPPM"
}
###### END OLDFOOO ######
gen_field() {
test -z $W && W=640
test -z $H && H=480
test -z $COLOR && COLOR="666999"
message "drawing ${YELLOW}$W x $H - $COLOR${ENDCOLOR}" >&2
for x in $(seq 0 $W)
do
for y in $(seq 0 $H)
do
echo "PX $x $y $COLOR"
done
done
}
convertimg() {
if [ -z "$1" ]
then
CONVERTFILE="$IMGFILE"
else
CONVERTFILE="$1"
fi
convert $CONVERTFILE $BORDER $RESIZE txt: | tail -n +2 | awk '{print $1 $3}' | sed -e 's/\,/ /' -e 's/\:/ /' -e 's/\#//' -e 's/^/PX /'
}
xymode() {
case $SHUFMODE in
chaos) OFFSET="OFFSET $(shuf -i 0-$X_MAX -n 1) $(shuf -i 0-$Y_MAX -n 1)"
;;
shake) OFFSET="OFFSET $(shuf -i $X-$(($X+10)) -n 1) $(shuf -i $Y-$(($Y+10)) -n 1)"
;;
cursor) OFFSET="OFFSET $(xdotool getmouselocation | tr ':' ' '|awk '{print $2 " " $4}')"
;;
bounce)
# every call is a run in a loop
# in every run we count x or y alternativ one up or down
# we decide with with var 'xory', 0 is x , 1 is y
# up or down ist set with 'xdir' and 'ydir'
# 0 means up, 1 means down
#
# handled outsite, in the flootworker()
if [ $XDIR == 0 ]
then
X=$(($X+$BOUNCESTEP))
test $X -ge $X_MAX && XDIR=1
else
X=$(($X-$BOUNCESTEP))
test $X -eq 0 && XDIR=0
fi
if [ $YDIR == 0 ]
then
Y=$(($Y+$BOUNCESTEP))
test $Y -ge $Y_MAX && YDIR=1
else
Y=$(($Y-$BOUNCESTEP))
test $Y -eq 0 && YDIR=0
fi
OFFSET="OFFSET $X $Y"
;;
static|*) test -z $X && X=0
test -z $Y && Y=0
OFFSET="OFFSET $X $Y"
;;
esac
}
frametick() {
test -z "$FRAMETICKTIME" && FRAMETICKTIME=0.1
#LOLFIELDS=12
i=0
while true
do
if [ "$i" -lt $LOLFIELDS ]
then
echo "$i" > $FRAMETOPICK_SHM
i=$(($i+1))
else
i=0
fi
sleep $FRAMETICKTIME
done
}
flootworker()
{
if [ $ANIMATION ] && [ $iFLOOTWORKER -gt 1 ]
then
message "[worker ${YELLOW}$iFLOOTWORKER${ENDCOLOR}] shuffle pixels again to maximize coverage" >&2
i=0
while [ $i -lt $LOLFIELDS ]
do
LOL[$i]="$(echo "${LOL[$i]}" | shuf)"
i=$(($i+1))
done
message "[worker ${YELLOW}$iFLOOTWORKER${ENDCOLOR}] shuffle ${GREEN}done${ENDCOLOR}" >&2
fi
while true
do
# set offset
if [ $SYNCFLOOTWORKER ]
then
if [ $iFLOOTWORKER == 1 ]
then
xymode
echo "$OFFSET" > $OFFSET_SHM
fi
echo "$(<${OFFSET_SHM})"
else
xymode
echo "$OFFSET"
fi
if [ $LARGE ]
then
for i in $(seq 0 $1 | shuf)
do
echo "${LOL[$i]}"
done
elif [ $ANIMATION ]
then
#~ xymode
#~ echo "$OFFSET"
echo "${LOL[$(<${FRAMETOPICK_SHM})]}"
#~ i=0
#~ while [ $i -le $1 ]
#~ do
#~ echo "${LOL[$i]}"
#~ i=$(($i+1))
#~ done
else
echo "${LOL[$1]}"
fi
done > /dev/tcp/$IPFLOOT/$FLOOTPORT || message warn "[worker ${YELLOW}$iFLOOTWORKER${ENDCOLOR}] transmission ${RED}failed${ENDCOLOR} - maybe you need to decrease ${YELLOW}FLOOTFORKS${ENDCOLOR} or expand/tune your uplink"
}
checkfile() {
if [ ! -f $1 ] || [ -z $1 ]
then
message error "file ${YELLOW}$1${ENDCOLOR} does not exist."
exit 1
fi
}
loadLOL() {
# when LARGE true, then we slize the large pixlist into smaller pieces
# max 64k each one
if [ $LARGE ]
then
LOL_org="$(echo "$LOL_org" | shuf)"
test -z "$LOLFIELDSIZE" && LOLFIELDSIZE=64000
# line counter
L=1
LINES="$(echo "$LOL_org" | wc -l )"
LOLFIELDS="$(( ( $LINES / $LOLFIELDSIZE ) ))"
message "LARGE mode: slicing ${YELLOW}${IMGFILE}${ENDCOLOR} - ${YELLOW}${LINES}${ENDCOLOR} into ${YELLOW}$((${LOLFIELDS}+1))${ENDCOLOR} fields"
i=0
while [ $i -le $LOLFIELDS ]
do
LN=$(($L+$LOLFIELDSIZE+1))
message "field ${YELLOW}${i}/${LOLFIELDS}${ENDCOLOR}, lines ${YELLOW}${L}${ENDCOLOR} - ${YELLOW}${LN}${ENDCOLOR}"
LOL[$i]="$(echo "$LOL_org" | sed -n "${L},$(($LN-1))p;${LN}q" )"
L=$LN
i=$(($i+1))
done
elif [ $ANIMATION ]
then
i=0
while [ $i -lt $LOLFIELDS ]
do
if [ -z "$ALPHACOLOR" ]
then
message "load and shuffle pixels for frame ${YELLOW}$((${i}+1))/${LOLFIELDS}${ENDCOLOR}"
LOL[$i]="$(convertimg ${ANIFILE}-${i}.png | shuf)"
else
message "load and shuffle pixels for frame ${YELLOW}$((${i}+1))/${LOLFIELDS}${ENDCOLOR}, remove aplha color ${YELLOW}${ALPHACOLOR}${ENDCOLOR}"
LOL[$i]="$(convertimg ${ANIFILE}-${i}.png | grep -v $ALPHACOLOR | shuf)"
fi
#echo "${LOL[$i]}" | head
i=$(($i+1))
done
# ani
#~ echo ani ani
#~ exit 1
else
for i in $(seq 1 $FLOOTFORKS)
do
if [ -z "$ALPHACOLOR" ]
then
message "shuffle pixels for [worker ${YELLOW}${i}${ENDCOLOR}]"
LOL[$i]="$(echo "$LOL_org" | shuf)"
else
message "remove aplha color ${YELLOW}${ALPHACOLOR}${ENDCOLOR} and shuffle pixels for [worker ${YELLOW}${i}${ENDCOLOR}]"
LOL[$i]="$(echo "$LOL_org" | grep -v $ALPHACOLOR | shuf)"
fi
done
fi
}
floot() {
if [ -n "$BORDERCOLOR" ]
then
BORDER="-bordercolor #${BORDERCOLOR} -border 2x2"
else
BORDER=""
fi
if [ -n "$RESIZE" ]
then
message "resizing to ${YELLOW}${RESIZE}px${ENDCOLOR}"
RESIZE="-resize $RESIZE"
fi
case $FNAME in
# small stupid animation, two alternating images
winketuxS)
message "drawing winketuxS animation"
LOL[1]="$(cat pixlists/${FNAME}1.pixlist | shuf)"
LOL[2]="$(cat pixlists/${FNAME}2.pixlist | shuf )"
LOL[3]="$(cat pixlists/${FNAME}2.pixlist | shuf )"
#LOL[3]="$(cat $FNAME-mc.pixlist.2 | shuf)"
;;
fill)
message "generating color field with ${YELLOW}${FLOOTFORKS}${ENDCOLOR} worker"
LOL_org="$(gen_field)"
loadLOL
;;
""|text)
test -z "$TEXT" && TEXT="$0"
test -z "$FONTSIZE" && FONTSIZE=42
test -z "$COLOR" && COLOR="000000"
test -z "$BGCOLOR" && BGCOLOR="FFFFFF"
if [ -n "$SIZE" ]
then
SIZE="-size $SIZE"
fi
#convert -fill lightgreen -background white -pointsize 40 caption:"KARTTUR" -quality 72 DstImage.png
message "generating text, size $FONTSIZE for ${YELLOW}$FLOOTFORKS${ENDCOLOR} worker"
message "TEXT: ${YELLOW}${TEXT}${ENDCOLOR}"
LOL_org="$(convert ${SIZE} ${BORDER} +antialias -depth 8 -fill \#${COLOR} -background \#${BGCOLOR} -pointsize ${FONTSIZE} caption:"${TEXT}" -quality 72 txt: | tail -n +2 | awk '{print $1 $3}' | sed -e 's/\,/ /' -e 's/\:/ /' -e 's/\#//' -e 's/^/PX /')"
loadLOL
;;
*)
if [ $ANIMATION ]
then
checkfile $IMGFILE
message "ANIMATION mode, checking if ${YELLOW}${IMGFILE}${ENDCOLOR} is an GIF"
if [ "$(file $IMGFILE |awk '{print $2}')" == "GIF" ]
then
LOLFIELDS="$(identify $IMGFILE | wc -l )"
message "splitting ${YELLOW}${IMGFILE}${ENDCOLOR} up into ${YELLOW}${LOLFIELDS}${ENDCOLOR} frame images"
convert -coalesce $IMGFILE ${ANIFILE}.png || error
else
message error "Other filetypes then ${YELLOW}GIF${ENDCOLOR} are not supported at the moment for ${YELLOW}ANIMATION${ENDCOLOR}"
exit 1
fi
else
if [ $USECACHE ]
then
checkfile $PIXLIST
message "using cache from ${YELLOW}$PIXLIST${ENDCOLOR}"
LOL_org="$(< $PIXLIST)"
else
checkfile $IMGFILE
message "convertimg image file ${YELLOW}${IMGFILE}${ENDCOLOR}"
LOL_org="$(convertimg)"
#convertimg > $PIXLIST
fi
fi
message "prepare worker .."
#set -x
loadLOL
#set +x
message "${GREEN}Done!${ENDCOLOR}"
;;
esac
if [ $ANIMATION ]
then
frametick &
fi
message "starting ${YELLOW}${FLOOTFORKS}${ENDCOLOR} worker"
if [ -n "$SYNCFLOOTWORKER" ] && [ $FLOOTFORKS -gt 1 ]
then
message "SYNCFLOOTWORKER is enabled, all worker use OFFSET from [worker ${YELLOW}1${ENDCOLOR}]"
fi
while true
do
for iFLOOTWORKER in $(seq $FLOOTFORKS)
do
#echo "check worker $i PID ${LOLPID[$i]} if running "
if [ -z ${LOLPID[$iFLOOTWORKER]} ] || ! ps -p ${LOLPID[$iFLOOTWORKER]} > /dev/null
then
message "[worker ${YELLOW}$iFLOOTWORKER${ENDCOLOR}] not running, starting it"
if [ $LARGE ] || [ $ANIMATION ]
then
flootworker $LOLFIELDS &
LOLPID[$iFLOOTWORKER]=$!
message "[worker ${YELLOW}$iFLOOTWORKER${ENDCOLOR}] PID ${YELLOW}${LOLPID[$iFLOOTWORKER]}${ENDCOLOR} ${GREEN}started${ENDCOLOR}"
else
flootworker $iFLOOTWORKER &
LOLPID[$iFLOOTWORKER]=$!
fi
fi
done
done
}
case $1 in
### DEPRECATED - JUST FOR TESTING
draw_pixmap) draw_pixmap
;;
gen_pixmap) gen_pixmap
;;
### END DEPRECATED - JUST FOR TESTING
convertimg)
# old way
##gen_pixmap
##draw_pixmap
# convert arbeitsplatz.jpg txt: | tail -n +2 | awk '{print $1 $3}'
# this is probably better
checkfile $IMGFILE
message "generating pixlist cachefile from ${YELLOW}${IMGFILE}${ENDCOLOR}"
convertimg > $PIXLIST
message "file ${YELLOW}${PIXLIST}${ENDCOLOR} generated, you can use it with ${GREEN}USECACHE=true $0 floot ${IMGFILE}${YELLOW}"
;;
floot) message "flooting ${YELLOW}${IPFLOOT}:${FLOOTPORT}${ENDCOLOR}"
##~ WIP - get the size of the board from server
#~ message "request board size from ${YELLOW}${IPFLOOT}:${FLOOTPORT}${ENDCOLOR}"
#~ exec 5<>/dev/tcp/$IPFLOOT/$FLOOTPORT
#~ echo "SIZE" >&5
#~ #sleep 1
#~ BOARDSIZE="$(cat <&5)" &
#~ cat <&5 &
#~ sleep 1
#~ exec 5<&-
#~ message "$BOARSIZE"
##~ END WIP
case $SHUFMODE in
cursor)
if ! command -v xdotool > /dev/null
then
message error "${YELLOW}xdotool${ENDCOLOR} not found"
exit 1
fi
;;
*)
;;
esac
for imgmgckCMD in convert identify
do
if ! command -v $imgmgckCMD > /dev/null
then
message error "imagemagick ${YELLOW}${imgmgckCMD}${ENDCOLOR} not found"
exit 1
fi
done
if [ $LARGE ] && [ $ANIMATION ]
then
message error "${YELLOW}LARGE${ENDCOLOR} and ${YELLOW}ANIMATION${ENDCOLOR} cannot be used at the same time. Please use only one of them."
exit 1
fi
message "all requirements satisfied ${GREEN}:)${ENDCOLOR}"
floot
;;
*)
echo "$0 [floot|convertimg] [FILENAME|fill|text] ([MODE])"
echo ""
echo "floot: flooting the target specified with IPFLOOT"
echo "convertimg: converts an image to a command list file in /tmp"
echo " to use it, start 'USECACHE=true $0 floot [FILENAME]', where FILENAME"
echo " is the original image file."
echo ""
echo "FILENAME: path to any picture imagemagick can handle (env X, Y, RESIZE, "
echo " BORDERCOLOR, ALPHACOLOR)"
echo "fill: create a filled area with (env COLOR, W (width), H (height), X, Y)"
echo "text: create a textbox (env TEXT, FONTSIZE, SIZE, COLOR, BGCOLOR, BORDERCOLOR"
echo " ALPHACOLOR)"
echo ""
echo "MODE: static (env X and Y for position)"
echo " chaos (env X_MAX and Y_MAX for position range)"
echo " shake (env X and Y for position)"
echo " cursor"
echo " bounce (env Y_MAX and X_MAX for max bounce range, BOUNCESTEP for step size)"
echo ""
echo "available env vars to configure:"
echo "IPFLOOT(string), FLOOTPORT(int), USECACHE(bool), FLOOTFORKS(int)"
echo "SIZE(int), TEXT(string), FONTSIZE(int), BGCOLOR(hex), COLOR(hex)"
echo "BORDERCOLOR(hex), X(int), Y(int), X_MAX(int), Y_MAX(int), H(int), W(int)"
echo "RESIZE(int), ALPHACOLOR(hex), BOUNCESTEP(int), LARGE(bool), LOLFIELDSIZE(int)"
echo "ANIMATION(bool), FRAMETICKTIME(float), SYNCFLOOTWORKER(bool)"
exit 1
;;
esac
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