Rakeshx609

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#!/usr/bin/env bash LOGDIR=/home/superkuh/bob/radio # rtl_power output OUTPUTDIR=/home/superkuh/bob/radio/www # temp dir WEBDIR=/home/superkuh/limbo/www/radio/ # put the finished dir here PANOJSLIB=/home/superkuh/bob/radio/panojs # contains folders: extjs,images,panojs,styles

Requirements: rtl_power, heatmap.py, PanoJS, imgcnv, ImageMagick

You have to manually edit and set the directory variables up above this.

A copy of heatmap.py should be in $LOGDIR.

imgcnv of BioImageConvert is required for slicing. There is a Debian repository for it at:

https://bitbucket.org/dimin/bioimageconvert/wiki/Appending%20debian%20repositories

To fulfill dependencies I had to install libopenjpeg5 1.5.2 from utopic.

http://packages.ubuntu.com/pt/utopic/amd64/libopenjpeg5/download

identify from ImageMagick is required to get x and y pixel sizes.

The visualizations are from keenerd's rtl_power using FFT mode and his heatmap.py

https://github.com/keenerd/rtl-sdr

https://raw.githubusercontent.com/keenerd/rtl-sdr-misc/master/heatmap/heatmap.py

cd ./rtl-sdr/build/src

./rtl_power -f 86M:1.1G:25k -g 34 -c 28% $LOGDIR/$(date +%Y-%m-%d_%H-%M --utc)_86-1100_25k.csv

This script automates processing of heatmap.py's 50,000px wide png into 3600 smaller image

tiles using imgcnv that PanoJS can load and present with javascript on a static website.

http://www.dimin.net/software/panojs/

The assumption is that within the $LOGDIR the most recent csv file is what to process.

./rtlpower2web.sh

Or you can pass the cvs filepath as an argument with,

./rtlpower2web.sh --file ~/somefile.csv

The filename determines the final directory name. The number of seconds between time marks is,

./rtlpower2web.sh --tick 600 --file ~/somefile.csv

It first calls heatmap.py to make the wide png. Then imgcnv slices that into a few sets of

zoom levels of png tiles; about 3600 of them. The original and resulting filenames fill a

barebones PanoJS html template to generate an index.html. This is deposited in the $OUTPUTDIR

with png tiles and PanoJS js libs to run it.

That independent PanoJS implementation dir is transferred to the webserver. The whole

process takes about ~30 minutes for a 2.5 GB csv file on my i5-3750 w/16GB ram.

PanoJS is great. The one change I had to make was in ./panojs/pyramid_imgcnv.js, line 94,

return "" + l + "" + x + "" + y + ".jpg";//?"+level;

to

return "" + l + "" + x + "" + y + ".png";//?"+level;

Because PanoJS kept trying to use .jpg extension to load tiles and I didn't know how else to

configure it. imgcnv can not output jpg in this mode.

cd $LOGDIR

args=("$@") COUNTER=1 while test $# -gt 0 do case "$1" in --tick) TIMETICKS=${args[$COUNTER]} ;; --file) LOGFILE=${args[$COUNTER]};FILENAME="${LOGFILE%.*}" ;; esac ((COUNTER++)) shift done if ! [ -n "$TIMETICKS" ] ; then TIMETICKS=3600; fi

if ! [ -n "$LOGFILE" ] ; then LOGFILE=$(ls -Art | grep ".csv" | tail -n 1)

FILENAME=$(ls -Art | grep -v run | grep ".csv" | tail -n 1)

FILENAME="${LOGFILE%.*}"

FILENAME="${FILENAME%.*}"

fi

#FILEDATE=$(date +%Y-%m-%d_%H-%M --utc --reference=$(ls -Art | tail -n 1)) #FILEDATE=$(date +%Y-%m-%d_%H-%M --utc --reference=$LOGFILE)

#echo "Copying logfile to temp."; #time cp $LOGFILE run.csv

echo "Running heatmap.py on [$LOGFILE]"

#time ./heatmap.py run.csv spectrum_$FILEDATE.png time ./heatmap.py --ytick $TIMETICKS $LOGFILE spectrum_$FILENAME.png

#DIRECTORY="$OUTPUTDIR/$FILEDATE" DIRECTORY="$OUTPUTDIR/$FILENAME" echo "Checking if output [$DIRECTORY] exists already..." if [[ -d "${DIRECTORY}" && ! -L "${DIRECTORY}" ]] ; then echo "Dir already exists. Deleting old [$DIRECTORY]." rm -rf $DIRECTORY else echo "Output dir doesn't exist. Creating it." fi mkdir $DIRECTORY

PNGIMAGE=$(ls -Art | grep ".png" | tail -n 1)

WIDTH=$(identify -format "%w" $PNGIMAGE) HEIGHT=$(identify -format "%h" $PNGIMAGE)

echo "Slicing images..."

time imgcnv -i $PNGIMAGE -o $DIRECTORY/spectrum.png -t png -tile 256

-tile 256 argument defines the size of the tiles in pixels tiles will be created based on

the outrput file name with inserted L, X, Y, where L - is a resolution level, L=0 is native

resolution, L=1 is 2x smaller, and so on X and Y - are tile indices in X and Y, where the

first tile is 0,0, second in X is: 1,0 and so on ex: '-o my_file.jpg' will produce files:

'my_file_LLL_XXX_YYY.png'

echo "Done, [$DIRECTORY] full of tiles."

echo "Copying PanoJS stuff..." cp -R $PANOJSLIB/* $DIRECTORY/

echo "Generating HTML index ... [$DIRECTORY/index.html]"

cat >$DIRECTORY/index.html << EOF

<title>radio spectrogram</title>

<style type="text/css">
  @import url(styles/panojs.css);
</style>

<script type="text/javascript" src="extjs/ext-core.js"></script>    
<script type="text/javascript" src="panojs/utils.js"></script>    
<script type="text/javascript" src="panojs/PanoJS.js"></script>
<script type="text/javascript" src="panojs/controls.js"></script>
<script type="text/javascript" src="panojs/pyramid_imgcnv.js"></script>
<script type="text/javascript" src="panojs/control_thumbnail.js"></script>
<script type="text/javascript" src="panojs/control_info.js"></script>
<script type="text/javascript" src="panojs/control_svg.js"></script>

rtlsdr spectrogram - $FILENAME

EOF

echo "Copying everything to [$WEBDIR] ..." time cp -R $DIRECTORY/ $WEBDIR/

time parallel -j10 cp {} $WEBDIR/ ::: $DIRECTORY/*

cd $DIRECTORY; time tar cf - $FILENAME/ | time ssh [email protected] 'cd /home/user/www/radio && tar xf -'

#echo "Deleting tmp image [$PNGIMAGE]: Disabled." #rm $PNGIMAGE echo "Done."