#sudo ~/build/opencv-webcam-demo/opencv-webcam-demo --data ~/affdex-sdk/data --faceMode 1 --numFaces 40 --draw 1
#sudo ~/build/opencv-webcam-demo/opencv-webcam-demo --data ~/affdex-sdk/data --faceMode 1 --numFaces 100 -o ~/output -f ~/emo_in_file.jpg
import subprocess
import json

import threading
import logging

logging.basicConfig(level=logging.DEBUG,
                    format='(%(threadName)-10s) %(message)s',
                    )

outputDir = "/home/crowd/output"
tmpImgFile = "/home/crowd/emo_in_file.jpg"


def handleLine(msg):
	try:
		j = json.loads(msg)
	except Exception as e:
		logging.error("Couldn't parse json " + msg)
		return
		
	#now we have json
	logging.debug(j)
	
print " ".join([
		'gphoto2',
		"--port", "usb:",
		"--capture-image-and-download",
		"-I", "1", # photo every second
		"--filename="+tmpImgFile, "--force-overwrite",
		])
print " ".join([
		'/home/crowd/build/opencv-webcam-demo/opencv-webcam-demo',
		"--data", "/home/crowd/affdex-sdk/data",
		"--faceMode", "1",
		"--numFaces", "40",
		"--draw", "1",
		"-o", outputDir,
		"-f", tmpImgFile,
		])
		

# gphoto2 --port usb: --capture-image-and-download -I 1 --filename=~/test.jpg --force-overwrite
def captureImages():
	procCapture = subprocess.Popen([
		'gphoto2',
		"--port", "usb:",
		"--capture-image-and-download",
		"-I", "1", # photo every second
		"--filename="+tmpImgFile, "--force-overwrite",
		],stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
	while procCapture.poll() is None:
		line = procCapture.stdout.readline()
		if line == '':
			continue
		logging.debug(line)
		if line.startswith("*** Error"):
			raise Exception("Camera not found on USB, or unable to claim it")
	return

def processImages():		
	procProcess = subprocess.Popen([
		'/home/crowd/build/opencv-webcam-demo/opencv-webcam-demo',
		"--data", "/home/crowd/affdex-sdk/data",
		"--faceMode", "1",
		"--numFaces", "40",
		"--draw", "1",
		"-o", outputDir,
		"-f", tmpImgFile,
		],stdout=subprocess.PIPE, stderr=subprocess.PIPE)
	while procProcess.poll() is None:
		line = procProcess.stdout.readline()
		if line == '':
			continue
			
		handleLine(line)
	return
	


captureThread = threading.Thread(name='capture', target=captureImages)
processThread = threading.Thread(name='process', target=processImages)

captureThread.start()
processThread.start()