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# -*- coding: utf-8 -*-
from ctypes import *
cdll.LoadLibrary("./libzbar.so.0.2.0")
import zbar
import pygame
import pygame.camera
from pygame.locals import *
pygame.init()
pygame.camera.init()
class SugarBar:
SIZE = (320, 240)
def __init__(self):
self.nueva = False
self.zImg = []
self.cam = pygame.camera.Camera("/dev/video0", self.SIZE, "YUV")
self.cam.start()
self.scanner = zbar.ImageScanner()
self.scanner.parse_config('disable')
self.scanner.parse_config('qrcode.enable')
self.scanner.enable_cache(True)
self.grayImg = pygame.Surface(self.SIZE, depth=8)
self.grayImg.set_palette([(x, x, x) for x in xrange(255)])
self.image = pygame.Surface(self.SIZE, depth=24)
self.mostrarCam = False
def getAndAnalize(self):
if self.cam.query_image():
self.nueva = True
self.cam.get_image(self.image)
arr3d = pygame.surfarray.pixels3d(self.image)
lumi = arr3d[0:self.SIZE[0], 0:self.SIZE[1], 0]
pygame.surfarray.blit_array(self.grayImg, lumi)
imgString = pygame.image.tostring(self.grayImg, "P")
self.zImg = zbar.Image(self.SIZE[0], self.SIZE[1], "Y800", imgString)
self.scanner.scan(self.zImg)
decoded = []
for symbol in self.zImg:
decoded.append(symbol.data)
return decoded
def blitCameraImage(self, display, position):
if self.nueva:
display.blit(self.grayImg, position)
self.nueva = False
def stop(self):
self.cam.stop()
def main(self):
display = pygame.display.set_mode(self.SIZE)
going = True
while going:
events = pygame.event.get()
for e in events:
if e.type == QUIT or (e.type == KEYDOWN and e.key == K_ESCAPE):
# close the camera safely
self.cam.stop()
going = False
elif e.type == KEYDOWN and e.key == pygame.K_c:
self.mostrarCam = not self.mostrarCam
res = self.getAndAnalize()
if not res == []:
print res
if self.mostrarCam:
self.blitCameraImage(display, (0, 0))
pygame.display.flip()
if __name__ == "__main__":
d = SugarBar()
d.main()
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