def main():
print "Timelapse starting at %s" % (time.asctime())
camera = GPhoto(subprocess)
info = Analyse(subprocess)
sysinfo = SystemStats(subprocess)
current_config = 19
shot = 0
failures = 0
prev_acquired = None
last_acquired = None
last_started = None
try:
while True:
last_started = datetime.now()
shot = shot + 1
config = CONFIGS[current_config]
print "Shot %d : %s" % (shot, time.asctime())
print "Shot %d : Shutter: %ss , ISO: %d , Ap: %s" % (shot, config[0], config[1], config[2])
sys.stdout.flush()
camera.set_shutter_speed(secs=config[0])
camera.set_iso(iso=str(config[1]))
camera.set_aperture(ap=config[2])
try:
filename = camera.capture_image_and_download()
except Exception, e:
print "Error on capture: " + str(e)
failures += 1
if failures > 2:
print "3 successive failures: the camera doesn't work!"
sys.stdout.flush()
break
print "Retrying..."
sys.stdout.flush()
# Occasionally, capture can fail but retries will be successful.
continue
failures = 0
# print "Shot %d Filename: %s" % (shot, filename)
sys.stdout.flush()
prev_acquired = last_acquired
brightness = float(info.mean_brightness("webkamera-tmp.jpg"))
last_acquired = datetime.now()
# health = sysinfo.stats()
print "Shot %d : Brightness: %s " % (shot, brightness)
sys.stdout.flush()
if brightness < TARGET_BRIGHTNESS * 0.9 and current_config < len(CONFIGS) - 1:
if TARGET_BRIGHTNESS - brightness > TARGET_BRIGHTNESS * 0.44 and current_config < len(CONFIGS) - 2:
current_config += 2
print "Shot %d : EV step: +2/3" % (shot)
else:
current_config += 1
print "Shot %d : EV step: +1/3" % (shot)
elif brightness > TARGET_BRIGHTNESS * 1.1 and current_config > 0:
if brightness - TARGET_BRIGHTNESS > TARGET_BRIGHTNESS * 0.44 and current_config > 2:
current_config -= 2
print "Shot %d : EV step: -2/3" % (shot)
else:
current_config -= 1
print "Shot %d : EV step: -1/3" % (shot)
else:
if last_started and last_acquired and last_acquired - last_started < MIN_INTER_SHOT_DELAY_SECONDS:
sleep_for = max((MIN_INTER_SHOT_DELAY_SECONDS - (last_acquired - last_started)).seconds, 0)
print "Sleeping for %ss ..." % str(sleep_for)
sys.stdout.flush()
time.sleep(sleep_for)
except Exception, e:
print str(e)
def main():
print "Timelapse starting at %s" % (time.asctime())
camera = GPhoto(subprocess)
info = Analyse(subprocess)
sysinfo = SystemStats(subprocess)
current_config = 19
shot = 0
failures = 0
prev_acquired = None
last_acquired = None
last_started = None
try:
while True:
last_started = datetime.now()
shot = shot + 1
config = CONFIGS[current_config]
print "Shot %d : %s" % (shot, time.asctime())
print "Shot %d : Shutter: %ss , ISO: %d , Ap: %s" % (
shot, config[0], config[1], config[2])
sys.stdout.flush()
camera.set_shutter_speed(secs=config[0])
camera.set_iso(iso=str(config[1]))
camera.set_aperture(ap=config[2])
try:
filename = camera.capture_image_and_download()
except Exception, e:
print "Error on capture: " + str(e)
failures += 1
if failures > 2:
print "3 successive failures: the camera doesn't work!"
sys.stdout.flush()
break
print "Retrying..."
sys.stdout.flush()
# Occasionally, capture can fail but retries will be successful.
continue
failures = 0
#print "Shot %d Filename: %s" % (shot, filename)
sys.stdout.flush()
prev_acquired = last_acquired
brightness = float(info.mean_brightness('webkamera-tmp.jpg'))
last_acquired = datetime.now()
#health = sysinfo.stats()
print "Shot %d : Brightness: %s " % (shot, brightness)
sys.stdout.flush()
if brightness < TARGET_BRIGHTNESS * 0.9 and current_config < len(
CONFIGS) - 1:
if TARGET_BRIGHTNESS - brightness > TARGET_BRIGHTNESS * 0.44 and current_config < len(
CONFIGS) - 2:
current_config += 2
print "Shot %d : EV step: +2/3" % (shot)
else:
current_config += 1
print "Shot %d : EV step: +1/3" % (shot)
elif brightness > TARGET_BRIGHTNESS * 1.1 and current_config > 0:
if brightness - TARGET_BRIGHTNESS > TARGET_BRIGHTNESS * 0.44 and current_config > 2:
current_config -= 2
print "Shot %d : EV step: -2/3" % (shot)
else:
current_config -= 1
print "Shot %d : EV step: -1/3" % (shot)
else:
if last_started and last_acquired and last_acquired - last_started < MIN_INTER_SHOT_DELAY_SECONDS:
sleep_for = max((MIN_INTER_SHOT_DELAY_SECONDS -
(last_acquired - last_started)).seconds,
0)
print "Sleeping for %ss ..." % str(sleep_for)
sys.stdout.flush()
time.sleep(sleep_for)
except Exception, e:
print str(e)
