Raspi2png Install guide

Part One - install raspi2png

This tool allows you to take screenshots from your Retroflag Gpi. They are stored in your screenshots folder in your home directory which can be accessed from samba or FTP.

For more information, see: https://github.com/AndrewFromMelbourne/raspi2png/

ssh into pi as pi user
enter sudo aptitude install libsdl1.2-dev, say y when asked and allow process to finish
enter wget https://github.com/AndrewFromMelbourne/raspi2png/archive/master.zip and allow to finish
enter unzip master.zip
enter cd raspi2png-master
enter make
mkdir ~/screenshots
sudo ln -s /home/pi/raspi2png-master/raspi2png ~/screenshots
Create a screenshot by issuing the following via terminal:
- ./screenshots/raspi2png -p ~/screenshots/screenshotname.png -c 9

Part Two - Make screenshots accessible from samba

At terminal enter sudo nano /etc/samba/smb.conf

Scroll to the bottom of the file and past in the following:

 [screenshots]
 comment = screenshots
 path = "home/pi/screenshots"
 writeable = yes
 guest ok = yes
 create mask = 0644
 directory mask = 0755
 force user = pi

press ctrl + x
press yes
press enter
enter sudo reboot to reboot the pi
screenshots folder should now be available along with the usual shares

Take multiple shots over duration

Thanks to: Hans

take 10 screenshots in 50 sec. to choose the best one

for f in {1..10}; do ./raspi2png -p ~/screenshots/gamename_$(date -Iseconds).png; sleep 5; done

Troubleshooting

If pictures come out sideways or otherwise wrong, it’s because your /boot/config.txt is perhapps using display_lcd_rotate=1 and if so, you should change it to just display_rotate=1 because raspi2png does not currently look for the other type of rotate (so it does not know it’s rotated).

Script

Handy script you can use for taking screenshots (so you don’t have to remember the command. put this in your home directory as “screenshot.sh” and make it executable with chmod 775 screenshot.sh then run it with ./screenshot.sh for a single screenshot or ./screenshot.sh multi (or any made up arguments, just add at least one thing to it for multiple shots). (you also should place your raspi2png executable in /usr/bin or update the script below to point to wherever you plan to store raspi2png.

#!/bin/sh

if [ $# -gt 0 ]
then
        # supply any argument to take 10 screenshots over 50 seconds.
        echo "taking 10 screenshots over 50 seconds.  Saving to ~/screenshots hit [Ctrl+C] to interrupt.";
        for f in $(seq 1 10)
                do
                sleep 5;
                raspi2png -p /home/pi/screenshots/screenshot_$(date +'%m-%d-%Y_%H_%M_%S').png -c 0;
                echo "Saved screenshot $f."
                done;
else
# supply no arguments to take a single screenshot.
echo "taking 1 screenshot.  Saving to ~/screenshots";
raspi2png -p /home/pi/screenshots/screenshot_$(date +'%m-%d-%Y_%H_%M_%S').png -c 0;
fi
exit 1;

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