107 lines
4.9 KiB
Python
107 lines
4.9 KiB
Python
from collections import OrderedDict
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from cam_server.pipeline.data_processing import functions
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from cam_server.utils import create_thread_pvs, epics_lock
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from logging import getLogger
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import math
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_logger = getLogger(__name__)
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mean_x_pv, mean_y_pv, sig_x_pv, sig_y_pv = None, None, None, None
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mean_x_name, mean_y_name, sig_x_name, sig_y_name = None, None, None, None
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ampl_x_pv, ampl_y_pv, integ_x_pv, integ_y_pv = None, None, None, None
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ampl_x_name, ampl_y_name, integ_x_name, integ_y_name = None, None, None, None
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sent_pid = -1
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throw_epics_errors = False
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initialized = False
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def initialize(parameters):
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global initialized
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global mean_x_name, mean_y_name, sig_x_name, sig_y_name, ampl_x_name, ampl_y_name, integ_x_name, integ_y_name
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prefix = parameters["camera_name"]
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mean_x_name = prefix + ":POS-X"
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mean_y_name = prefix + ":POS-Y"
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sig_x_name = prefix + ":SIG-X"
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sig_y_name = prefix + ":SIG-Y"
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ampl_x_name = prefix + ":AMPL-X"
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ampl_y_name = prefix + ":AMPL-Y"
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integ_x_name = prefix + ":INTEG-X"
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integ_y_name = prefix + ":INTEG-Y"
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initialized = True
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def process_image(image, pulse_id, timestamp, x_axis, y_axis, parameters, bsdata):
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global initialized, sent_pid
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global mean_x_pv, mean_y_pv, sig_x_pv, sig_y_pv, ampl_x_pv, ampl_y_pv, integ_x_pv, integ_y_pv
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global mean_x_name, mean_y_name, sig_x_name, sig_y_name, ampl_x_name, ampl_y_name, integ_x_name, integ_y_name
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if not initialized:
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initialize(parameters)
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initialized = True
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ret = OrderedDict()
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throw_epics_errors = parameters.get("throw_epics_errors", True)
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prefix = parameters["camera_name"]
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(x_profile, y_profile) = functions.get_x_y_profile(image)
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x_fit_gauss_function, x_fit_offset, x_fit_amplitude, x_fit_mean, x_fit_standard_deviation, x_center_of_mass, x_rms = functions.gauss_fit(x_profile, x_axis)
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y_fit_gauss_function, y_fit_offset, y_fit_amplitude, y_fit_mean, y_fit_standard_deviation, y_center_of_mass, y_rms = functions.gauss_fit(y_profile, y_axis)
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x_fwhm = functions.get_fw(x_axis,x_profile)
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y_fwhm = functions.get_fw(y_axis,y_profile)
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intensity = x_profile.sum()
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x_fit_integ = x_fit_amplitude * x_fit_standard_deviation * math.sqrt(2*math.pi)
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y_fit_integ = y_fit_amplitude * y_fit_standard_deviation * math.sqrt(2*math.pi)
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ret[prefix+":intensity"] = intensity
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ret[prefix+":x_fit_mean"] = x_fit_mean
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ret[prefix+":y_fit_mean"] = y_fit_mean
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ret[prefix+":x_fit_standard_deviation"] = x_fit_standard_deviation
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ret[prefix+":y_fit_standard_deviation"] = y_fit_standard_deviation
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ret[prefix+":x_center_of_mass"] = x_center_of_mass
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ret[prefix+":y_center_of_mass"] = y_center_of_mass
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ret[prefix+":x_rms"] = x_rms
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ret[prefix+":y_rms"] = y_rms
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ret[prefix+":x_fwhm"] = x_fwhm
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ret[prefix+":y_fwhm"] = y_fwhm
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ret[prefix+":x_fit_amplitude"] = x_fit_amplitude
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ret[prefix+":y_fit_amplitude"] = y_fit_amplitude
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ret[prefix+":x_fit_integ"] = x_fit_integ
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ret[prefix+":y_fit_integ"] = y_fit_integ
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mean_x_pv, mean_y_pv, sig_x_pv, sig_y_pv, ampl_x_pv, ampl_y_pv, integ_x_pv, integ_y_pv = create_thread_pvs([mean_x_name, mean_y_name, sig_x_name, sig_y_name, ampl_x_name, ampl_y_name, integ_x_name, integ_y_name])
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epics_error = None
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if pulse_id > sent_pid:
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sent_pid = pulse_id
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if epics_lock.acquire(False):
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try:
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for (pv, value) in [ (mean_x_pv, x_fit_mean), \
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(mean_y_pv, y_fit_mean), \
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(sig_x_pv, x_fit_standard_deviation), \
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(sig_y_pv, y_fit_standard_deviation), \
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(ampl_x_pv, x_fit_amplitude), \
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(ampl_y_pv, y_fit_amplitude), \
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(integ_x_pv, x_fit_integ), \
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(integ_y_pv, y_fit_integ) \
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]:
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if pv and pv.connected:
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pv.put(value)
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else:
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_logger.warning("PV not connected: %s" % (str(pv),))
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#epics_error = "PV not connected: %s" % (str(pv),)
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except Exception as e:
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epics_error = "Error writing PVs: %s" % (str(e),)
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finally:
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epics_lock.release()
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else:
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_logger.warning("Cannot aquire EPICS lock")
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if epics_error:
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_logger.warning(epics_error)
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if throw_epics_errors:
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raise Exception(epics_error)
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return ret
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else:
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_logger.warning("Invalid PID: %s last:%s"% (str(pulse_id), str(sent_pid),))
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sent_pid = 0 # It should be single threaded, assumes the camera instance restarted
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