paintner.py

#! /usr/bin/python

path = '/usr/src/gstreamer-phone'
import sys
if not path in sys.path:
	sys.path.append(path)

from socket import gethostbyname
from subprocess import Popen, PIPE
from shlex import split
from time import sleep
from log import *

import buttons, ring
from buttons import pressed, btnLeft, btnRight
from ring import *

# testing for Raspberry Pi OpenMAX libraries
if 'uvch264' in Popen(['gst-inspect-0.10'], stdout=PIPE).communicate()[0]:
	log("gstreamer has UVC H.264 superpowers")
else:
	log("Error: gstreamer has no UVC H.264 superpowers")

# testing for webcam
if 'C920' in Popen(split('v4l2-ctl --list-devices'), stdout=PIPE, stderr=PIPE).communicate()[0].strip():
	log("Webcam: Logitech C920 HD")
else:
	log("Error: Webcam not found")

while True:
	#
	# Start button
	#
	if pressed(btnRight):
		log("Initiating session ...")
		waehlton()
		success = False
		try:
			ip = gethostbyname("pummeluff.local")
			success = True
		except:
			pass
		if not success:
			try:
				ip = gethostbyname("pummeluff")
				success = True
			except:
				log("Network error: Unable to resolve Lohmann's IP address. Check your LAN or WLAN connection.")
				keinfreizeichenton()
		if success:
			log("Lohmann resolved to "+ip)
			log("Calling "+ip+" ...")
			Popen(split(path+'/streaming/paintner-to-lohmann '+ip))

	#
	# Stop button
	#
	# patch: right button press also somehow invokes left button event
	if pressed(btnLeft) and not pressed(btnRight):
		waehlton()
		sleep(1)
		if pressed(btnLeft): # still pressed
			if pressed(btnRight): # both pressed at once
				log("Shutdown")
				herunterfahrton()
				Popen(['halt'])
#			else:
#				log("Reboot")
#				neustartton()
#				Popen(['reboot'])
		else:
			Popen(split('killall ssh'), stdout=PIPE, stderr=PIPE)
			Popen(split('killall gst-launch-0.10'), stdout=PIPE, stderr=PIPE)
			Popen(split('killall gst-launch-1.0'), stdout=PIPE, stderr=PIPE)
			log("Session terminated.")
	sleep(0.1)