def trigger_capture(camera, context, dstpath='image.jpg'):
""" Trigger capture must be used instead of capture if you want to shoot while the mirror is locked up
and you do not want to re-focus - set capture format on camera"""
timeout = 20
starttime = time.time()
gp.check_result(gp.gp_camera_trigger_capture(camera, context))
filefound = [False, False]
while filefound[1] != gp.GP_EVENT_FILE_ADDED:
filefound = gp.gp_camera_wait_for_event(camera, 10000, context)
if time.time() - starttime > timeout:
print ('operation timed out')
return False
campath = '/'
filelist = list_files(camera, context, campath)
for f in filelist:
filename = f.strip(campath)
camfile = gp.check_result(gp.gp_file_new())
gp.gp_camera_file_get(camera, campath, filename, gp.GP_FILE_TYPE_NORMAL, camfile, context)
gp.gp_file_save(camfile, dstpath)
gp.gp_file_unref(camfile)
gp.gp_camera_file_delete(camera, campath, filename, context)
endtime = round(time.time() - starttime, 2)
print ('capture complete in {}s'.format(endtime))
def camera_capture_light_field(camera, ser, n_views, n_exposures, stops=2.0, path='/tmp'):
# initialize camera location
ser.write(b'm0')
# check and create output dirctory for capture
output_dir = os.path.join(path, "capture")
if not os.path.exists(output_dir):
os.mkdir(output_dir)
else:
n_folder = 0
while os.path.exists(output_dir):
n_folder += 1
output_dir = os.path.join(path, "capture-{}".format(n_folder))
os.mkdir(output_dir)
# capture process
for capture_location in range(n_views):
# initialize camera
gp.check_result(gp.gp_camera_init(camera))
# wait for camera to stop moving and trigger camera capture
process = ser.readline()
gp.check_result(gp.gp_camera_trigger_capture(camera))
# move to the next location
if capture_location is not n_views-1:
ser.write(b'm' + str((capture_location+1)*(1000//(n_views-1))).encode('UTF-8'))
# save the captured files to path
file_number = 0
while file_number < n_exposures:
gp.check_result(gp.gp_camera_wait_for_event(
camera, gp.GP_EVENT_FILE_ADDED))
# wait for new available file
file_list = list_files(camera)
# save the new file
if len(file_list) is not file_number:
# file format: capt-<sequence>-<distance(mm)>[<exposure(EV)>].arw
# e.g. capt-001-0100[-2.0].arw
target = os.path.join(output_dir, "capt-{:0>3d}-{:0>4d}[{:+.1f}]".format(
capture_location*n_exposures + file_number, int(capture_location*(1000/(n_views-1))),
stops*(file_number-n_exposures//2)) + file_list[file_number][-4:])
camera_file = gp.check_result(gp.gp_camera_file_get(
camera, '/', file_list[file_number][1:], gp.GP_FILE_TYPE_NORMAL))
gp.check_result(gp.gp_file_save(camera_file, target))
file_number += 1
# exit camera
gp.check_result(gp.gp_camera_exit(camera))
# return to initial location
ser.write(b'm0')
def capture_bulb(self, test = False, callback = None):
if test:
sec = self.status['test-exp-sec']
self.set_config_value_checked('iso', self.status['test-iso'])
try:
self.status['test-iso'] = int(self.get_config_value('iso'))
except:
pass
self.set_config_choice('capturetarget', 0) #mem
self.set_config_choice('imageformat', 1) #Large Normal JPEG
else:
sec = self.status['exp-sec']
self.set_config_value_checked('iso', self.status['iso'])
try:
self.status['iso'] = int(self.get_config_value('iso'))
except:
pass
self.set_config_choice('capturetarget', 1) #card
#self.set_config_choice('imageformat', 24) #RAW
self.set_config_choice('imageformat', 7) #RAW + Large Normal JPEG
self.set_config_value('aperture', self.status['f-number'])
self.status['f-number'] = self.get_config_value('aperture')
if sec <= 30:
bulbmode = None
self.set_config_value_checked('autoexposuremode', 'Manual')
self.set_config_value_checked('shutterspeed', sec)
gp.check_result(gp.gp_camera_trigger_capture(self.camera, self.context))
else:
self.set_config_value_checked('autoexposuremode', 'Manual')
if not self.set_config_value_checked('shutterspeed', 'Bulb'):
self.set_config_value_checked('autoexposuremode', 'Bulb')
bulbmode = 'eosremoterelease'
if not self.set_config_value_checked('eosremoterelease', 'Immediate'):
self.set_config_value('bulb', 1)
bulbmode = 'bulb'
self.t_start = time.time()
t = 0
self.status['exp_in_progress'] = True
self.status['interrupt'] = False
while True:
if t < sec - 4 and not self.status['interrupt']:
time.sleep(3)
e, file_path = gp.check_result(gp.gp_camera_wait_for_event(self.camera, 1000,self.context))
t = time.time() - self.t_start
print "camera event ", t, e, file_path
if self.status['exp_in_progress']:
self.status['cur_time'] = int(t)
if self.status['exp_in_progress'] and (t > sec or self.status['interrupt']):
if bulbmode == 'bulb':
self.set_config_value('bulb', 0)
elif bulbmode == 'eosremoterelease':
self.set_config_value_checked('eosremoterelease', 'Release Full')
self.status['exp_in_progress'] = False
if e == gp.GP_EVENT_FILE_ADDED:
print >> sys.stderr, "filepath:", file_path.folder, file_path.name
filename, file_extension = os.path.splitext(file_path.name)
if file_extension == ".jpg" or file_extension == ".JPG":
break
self.status['exp_in_progress'] = False
self.status['cur_time'] = 0
self.status['interrupt'] = False
target = os.path.join('/tmp', file_path.name)
n = 20
while True:
n -= 1
try:
camera_file = gp.check_result(gp.gp_camera_file_get(self.camera, file_path.folder, file_path.name, gp.GP_FILE_TYPE_NORMAL, self.context))
file_data = gp.check_result(gp.gp_file_get_data_and_size(camera_file))
if callback is not None:
callback(file_data)
break
except gp.GPhoto2Error as ex:
if ex.code == gp.GP_ERROR_CAMERA_BUSY:
time.sleep(1)
if (n > 0):
continue
raise
#stop review on display
self.set_config_value_checked('eosremoterelease', 'Press Half')
self.set_config_value_checked('eosremoterelease', 'Release Half')
self.do_fps_hack()
def trigger(self):
self.log("Triggering")
gp.check_result(gp.gp_camera_trigger_capture(self.camera, self.context))
self.log("Triggered")
self.in_preview = False