Source code for PyMca5.PyMcaCore.SPSLayer

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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))