README change

1 files changed, 66 insertions, 0 deletions

diff --git a/gr-scigen/python/generic.py b/gr-scigen/python/generic.py
new file mode 100644
index 000000000..f7807fdbc
--- /dev/null
+++ b/gr-scigen/python/generic.py
@@ -0,0 +1,66 @@
+import gras
+import numpy
+
+class generic(gras.Block):
+
+	def __init__(self):
+		gras.Block.__init__(self,
+			name="generic",
+			in_sig=[numpy.float32],
+			out_sig=[numpy.float32])	
+
+	def set_parameters(self,func_name,window):
+		self.n = window
+		self.func_name = func_name
+	
+	# Check if value of window is integral of length of input source vector 
+	# For cases like -> input = [3 , 4, 5 ,6] & window = 3
+	def isIntegralWin(self, input_item, window):
+		if (len(input_item) % window ):
+			raise Exception("Value of Window should be an integral value of length of input items")
+			
+		
+	def work(self, input_items, output_items):
+		
+		# Limit output_items to just the size of window
+		output_items[0] = output_items[0][:self.n]
+		from scilab import Scilab
+		Sci = Scilab()
+		
+		# Check number of input_instances
+		n_input_items = len(input_items)
+		
+		# Create output string instance which will be evaluated
+		out_eval_string = 'eval("Sci.'+self.func_name+'('
+		
+		# Iterate for n_input_items
+		for i in range(n_input_items):
+			
+			# Check window condition
+			self.isIntegralWin(input_items[i][:], self.n)
+
+			# If the window is greater than 1,  input_items[i][:self.n] looks like [1   2   3   4   5] which is err for python since it requires comma as delimiters 
+			if self.n == 1:
+				out_eval_string = out_eval_string + str(input_items[i][:self.n]) + ","
+			else:	
+				print 'IN',str(input_items[i][:self.n])
+				out_eval_string = out_eval_string + (str(input_items[i][:self.n].tolist()))  + ","  # Replace 10spaces with a singe comma
+						
+		out_eval_string = out_eval_string.rstrip(",") + ')")'
+		print "STRING  ",str(out_eval_string)
+		
+		# for functions like sin
+		if n_input_items == 1 and self.n == 1:
+			output_items[0][:self.n] = eval(out_eval_string)
+		else:
+			output_items[0] = eval(out_eval_string)
+
+		print "OUT",output_items[0]
+		#print 'SIZE,', output_items[0].size
+		
+		#Write a for loop for n_inputs
+		for i in range(n_input_items):
+			self.consume(i,self.n) # Consume from port 0 input_items
+
+		self.produce(0,self.n) # Produce from port 0 output_items
+