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# The PyMca X-Ray Fluorescence Toolkit
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__author__ = "V.A. Sole - ESRF Data Analysis"
__contact__ = "sole@esrf.fr"
__license__ = "MIT"
__copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"
"""
SPSLayer.py
Data derived class to access spec shared memory
"""
import numpy
################################################################################
#from Data import *
from PyMca5.PyMcaIO import spswrap as sps
################################################################################
SOURCE_TYPE = "SPS"
[docs]class SPSLayer(object):
"""
Specializes Data class to access Spec shared memory.
Interface: Data class interface.
"""
def __init__(self,refresh_interval=None,info={}):
"""
See Data.__init__
"""
self.EdfObj=None
info["Class"]="SPSData"
#Data.__init__(self,refresh_interval,info)
self.SourceName= None
self.SourceInfo= None
self.GetData = self.LoadSource
[docs] def GetPageInfo(self,index={}):
if 'SourceName' in index:
self.SetSource(index['SourceName'])
if 'Key' in index:
info=self.GetData(index['Key'])
return info[0]
[docs] def AppendPage(self,scan_info, scan_data):
return scan_info,scan_data
[docs] def SetSource (self,source_name=None):
"""
Sets a new source for data retrieving, an spec version.
If spec exists, self.Source will be this spec name.
Parameters:
source_name: name of spec version
"""
if source_name==self.SourceName: return 1
if (source_name != None) and (source_name in sps.getspeclist()):
self.SourceName=source_name
self.Source=self.SourceName
return 1
else:
self.SourceName=None
self.Source=None
return 0
[docs] def GetSourceInfo (self, key=None):
"""
Returns information about the Spec version set by
SetSource, to give application possibility to know about
it before loading.
Returns a dictionary with the keys "Size" (number of possible
keys to this source) and "KeyList" (list of all available keys
in this source). Each element in "KeyList" is an shared memory
array name.
If key is set as an array name, returns information about it.
"""
if self.SourceName is not None:
if key is None: return self.__GetSourceInfo()
elif key in sps.getarraylist(self.SourceName): return self.__GetArrayInfo(key)
return None
def __GetSourceInfo(self):
arraylist= []
for array in sps.getarraylist(self.SourceName):
arrayinfo= sps.getarrayinfo(self.SourceName, array)
arraytype= arrayinfo[2]
arrayflag= arrayinfo[3]
if arrayflag in (sps.IS_ARRAY, sps.IS_MCA, sps.IS_IMAGE) and arraytype!=sps.STRING:
arraylist.append(array)
source_info={}
source_info["Size"]=len(arraylist)
source_info["KeyList"]=arraylist
return source_info
def __GetArrayInfo(self,array):
info={}
info["SourceType"]=SOURCE_TYPE
info["SourceName"]=self.SourceName
info["Key"]=array
info["Source"]=self.Source
arrayinfo=sps.getarrayinfo (self.SourceName,array)
info["rows"]=arrayinfo[0]
info["cols"]=arrayinfo[1]
info["type"]=arrayinfo[2]
info["flag"]=arrayinfo[3]
counter=sps.updatecounter (self.SourceName,array)
info["updatecounter"]=counter
envdict={}
keylist=sps.getkeylist (self.SourceName,array+"_ENV")
for i in keylist:
val=sps.getenv(self.SourceName,array+"_ENV",i)
envdict[i]=val
info["envdict"]=envdict
calibarray= array + "_PARAM"
if calibarray in sps.getarraylist(self.SourceName):
try:
data= sps.getdata(self.SourceName, calibarray)
updc= sps.updatecounter(self.SourceName, calibarray)
info["EnvKey"]= calibarray
info["McaCalib"]= data.tolist()[0]
info["env_updatecounter"]= updc
except:
pass
if array in ["XIA_DATA", "XIA_BASELINE"]:
envarray= "XIA_DET"
if envarray in sps.getarraylist(self.SourceName):
try:
data= sps.getdata(self.SourceName, envarray)
updc= sps.updatecounter(self.SourceName, envarray)
info["EnvKey"]= envarray
info["Detectors"]= data.tolist()[0]
info["env_updatecounter"]= updc
except:
pass
return info
[docs] def LoadSource(self,key_list="ALL",append=0,invalidate=1,row="ALL",col="ALL"):
"""
Creates a given number of pages, getting data from the actual
source (set by SetSource)
Parameters:
key_list: list of all keys to be read from source. It is a list of
string, shared memory array names, to be read from the file.
It can be also one single string, if only one array is to be read.
append: If non-zero appends to the end of page list.
Otherwise, initializes the page list
invalidate: if non-zero performas an invalidade call after
loading
row: If set to an integer, loads a single row (0-based indexed)
col: If set to an integer, loads a single column (0-based indexed)
"""
#AS if append==0: Data.Delete(self)
if type(key_list) == type(" "): key_list=(key_list,)
output =[]
if self.SourceName in sps.getspeclist():
if key_list == "ALL":
key_list = sps.getarraylist(self.SourceName)
for array in key_list:
if array in sps.getarraylist(self.SourceName):
info = self.__GetArrayInfo(array)
info["row"] = row
info["col"] = col
if info["row"]!="ALL":
data= sps.getdatarow(self.SourceName, array,info["row"])
if data is not None:
data=numpy.reshape(data,(1, data.shape[0]))
elif info["col"]!="ALL":
data= sps.getdatacol(self.SourceName, array, info["col"])
if data is not None:
data=numpy.reshape(data, (data.shape[0], 1))
else:
data=sps.getdata (self.SourceName, array)
#self.AppendPage(info,data)
output.append([info,data])
if len(output) == 1:
return output[0]
else:
return output
#AS if invalidate: self.Invalidate()
def __RefreshPageOrig (source_obj,self,page):
"""
Virtual method, implements seeking for changes in data.
Returns non-zero if the page was changed.
If not implemented in the derived class, this class doesn't
support dinamic changes monitoring.
As pages can be copied to different Data objects, and can
store the original RefreshPage method for updating, source_obj
refers to the object that was origin of the page data, while
self indicates the object that actually owns the page
with index page.
It was done this way because if it is stored the reference to
the unbound method, python doesn't allow you to call it with
an object of different data type.
Important:
Derived classes shall update the page: self.Pages[page]
but not: source_obj.Pages[page]
"""
if (self.GetItemPageInfo("SourceType",page)==SOURCE_TYPE):
specname=self.GetItemPageInfo("SourceName",page)
arrayname=self.GetItemPageInfo("Key",page)
updatecounter=self.GetItemPageInfo("updatecounter",page)
if (updatecounter!=None) and (arrayname!=None) and (specname!=None):
if specname in sps.getspeclist():
if arrayname in sps.getarraylist(specname):
counter=sps.updatecounter (specname,arrayname)
if (counter != updatecounter):
info=self.GetPageInfo(page)
info.update(self.__GetArrayInfo(arrayname))
if info["row"]!="ALL": data= sps.getdatarow(specname,arrayname,info["row"])
elif info["col"]!="ALL": data= sps.getdatacol(specname,arrayname,info["col"])
else: data=sps.getdata (specname,arrayname)
self.Pages[page].Array=data
return 1
infoname= self.GetItemPageInfo("EnvKey")
infoupdc= self.GetItemPageInfo("env_updatecounter")
if (infoupdc!=None) and (infoname!=None) and (specname!=None):
if infoname in sps.getarraylist(specname):
counter= sps.updatecounter(specname,infoname)
if (counter!=infoupdc):
info= self.GetPageInfo(page)
info.update(self.__GetArrayInfo(arrayname))
return 1
return 0
[docs] def RefreshPage(self,sourcename,key):
specname = sourcename
arrayname= key
if not sps.specrunning(specname):
return 0
if sps.isupdated(specname,arrayname):
return 1
else:
return 0
################################################################################
#EXEMPLE CODE:
if __name__ == "__main__":
import sys,time
try:
obj=SPSLayer()
specname=sys.argv[1]
arrayname=sys.argv[2]
obj.SetSource(specname)
obj.LoadSource(arrayname)
while(1):
time.sleep(1)
print(obj.RefreshPage(specname,arrayname))
except:
print("Usage: SPSLayer.py <specversion> <specname>")
sys.exit()
for i in range (obj.GetNumberPages()):
print(obj.GetPageInfo(i))
print(obj.GetPageArray(i))