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########################################################################
#
# Vision Node - Python source code - file generated by vision
# Monday 26 November 2007 07:29:01
#
# The Scripps Research Institute (TSRI)
# Molecular Graphics Lab
# La Jolla, CA 92037, USA
#
# Copyright: Daniel Stoffler, Michel Sanner and TSRI
#
# revision: Guillaume Vareille
#
#########################################################################
#
# $Header: /opt/cvs/VisionLibraries/scipylib/signal/waveRead.py,v 1.1 2007/11/28 23:09:08 mgltools Exp $
#
# $Id: waveRead.py,v 1.1 2007/11/28 23:09:08 mgltools Exp $
#
import wave
# import node's base class node
from NetworkEditor.items import NetworkNode
class waveRead(NetworkNode):
mRequiredTypes = {}
mRequiredSynonyms = [
]
def __init__(self, constrkw = {}, name='waveRead', **kw):
kw['constrkw'] = constrkw
kw['name'] = name
apply( NetworkNode.__init__, (self,), kw)
code = """def doit(self, filename):
if filename and len(filename):
f = wave.open(filename,'rb')
sampleRate= f.getframerate()
channels= f.getnchannels()
datastream= f.readframes( 300000 )
f.close()
self.outputData(data=datastream)
## to ouput data on port sample_rate use
self.outputData(sample_rate=sampleRate)
## to ouput data on port num_channels use
self.outputData(num_channels=channels)
"""
self.configure(function=code)
self.inputPortsDescr.append(
{'singleConnection': True, 'name': 'filename', 'cast': True, 'datatype': 'string', 'required': True, 'height': 8, 'width': 12, 'shape': 'oval', 'color': 'white'})
self.outputPortsDescr.append(
{'name': 'data', 'datatype': 'string', 'height': 12, 'width': 12, 'shape': 'oval', 'color': 'cyan'})
self.outputPortsDescr.append(
{'name': 'sample_rate', 'datatype': 'None', 'height': 8, 'width': 12, 'shape': 'diamond', 'color': 'white'})
self.outputPortsDescr.append(
{'name': 'num_channels', 'datatype': 'None', 'height': 8, 'width': 12, 'shape': 'diamond', 'color': 'white'})
self.widgetDescr['filename'] = {
'initialValue': '', 'labelGridCfg': {'column': 0, 'row': 1}, 'width': 16, 'master': 'node', 'widgetGridCfg': {'labelSide': 'left', 'column': 1, 'row': 1}, 'labelCfg': {'text': 'file:'}, 'class': 'NEEntryWithFileBrowser'}
def beforeAddingToNetwork(self, net):
try:
ed = net.getEditor()
except:
import traceback; traceback.print_exc()
print 'Warning! Could not import widgets'
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