/usr/lib/python2.7/dist-packages/PyMca/SPSLayer.py is in pymca 4.7.4+dfsg-1build1.
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# Copyright (C) 2004-2012 European Synchrotron Radiation Facility
#
# This file is part of the PyMca X-ray Fluorescence Toolkit developed at
# the ESRF by the Software group.
#
# This toolkit is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 2 of the License, or (at your option)
# any later version.
#
# PyMca is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# PyMca; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# PyMca follows the dual licensing model of Riverbank's PyQt and cannot be
# used as a free plugin for a non-free program.
#
# Please contact the ESRF industrial unit (industry@esrf.fr) if this license
# is a problem for you.
#############################################################################*/
"""
SPSLayer.py
Data derived class to access spec shared memory
"""
import numpy
################################################################################
#from Data import *
from PyMca.PyMcaIO import spswrap as sps
################################################################################
SOURCE_TYPE = "SPS"
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
def GetPageInfo(self,index={}):
if 'SourceName' in index:
self.SetSource(index['SourceName'])
if 'Key' in index:
info=self.GetData(index['Key'])
return info[0]
def AppendPage(self,scan_info, scan_data):
return scan_info,scan_data
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
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
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
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))
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