class Scope_Widget(QtGui.QWidget):
def __init__(self, parent = None, logger = None):
QtGui.QWidget.__init__(self, parent)
self.audiobuffer = None
# store the logger instance
if logger is None:
self.logger = parent.parent.logger
else:
self.logger = logger
self.setObjectName("Scope_Widget")
self.gridLayout = QtGui.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.PlotZoneUp = TimePlot(self, self.logger)
self.PlotZoneUp.setObjectName("PlotZoneUp")
self.gridLayout.addWidget(self.PlotZoneUp, 0, 0, 1, 1)
self.setStyleSheet(STYLESHEET)
self.settings_dialog = Scope_Settings_Dialog(self, self.logger)
# method
def set_buffer(self, buffer):
self.audiobuffer = buffer
# method
def update(self):
if not self.isVisible():
return
time = 2*SMOOTH_DISPLAY_TIMER_PERIOD_MS/1000.
width = time*SAMPLING_RATE
#basic trigger capability on leading edge
floatdata = self.audiobuffer.data(2*width)
#number of data points received at the last audio buffer update
#newpoints = self.audiobuffer.newpoints
#print newpoints
# because of the buffering, sometimes we have not got any data
#if newpoints==0:
# return
#floatdata = self.audiobuffer.data(newpoints + width)
twoChannels = False
if floatdata.shape[0] > 1:
twoChannels = True
# trigger on the first channel only
triggerdata = floatdata[0,:]
# trigger on half of the waveform
trig_search_start = width/2
trig_search_stop = -width/2
triggerdata = triggerdata[trig_search_start : trig_search_stop]
max = floatdata.max()
trigger_level = max*2./3.
#trigger_level = 0.6
trigger_pos = where((triggerdata[:-1] < trigger_level)*(triggerdata[1:] >= trigger_level))[0]
if len(trigger_pos)==0:
return
if len(trigger_pos) > 0:
shift = trigger_pos[0]
else:
#return
shift = 0
shift += trig_search_start
datarange = width
floatdata = floatdata[:, shift - datarange/2: shift + datarange/2]
y = floatdata[0,:] #- floatdata.mean()
if twoChannels:
y2 = floatdata[1,:] #- floatdata.mean()
dBscope = False
if dBscope:
dBmin = -50.
y = sign(y)*(20*log10(abs(y))).clip(dBmin, 0.)/(-dBmin) + sign(y)*1.
if twoChannels:
y2 = sign(y2)*(20*log10(abs(y2))).clip(dBmin, 0.)/(-dBmin) + sign(y2)*1.
time = (arange(len(y)) - datarange/2)/float(SAMPLING_RATE)
if twoChannels:
self.PlotZoneUp.setdataTwoChannels(time, y, y2)
else:
self.PlotZoneUp.setdata(time, y)
# slot
def settings_called(self, checked):
self.settings_dialog.show()
# method
def saveState(self, settings):
self.settings_dialog.saveState(settings)
# method
def restoreState(self, settings):
self.settings_dialog.restoreState(settings)
class Scope_Widget(QtGui.QWidget):
def __init__(self, parent = None, logger = None):
QtGui.QWidget.__init__(self, parent)
self.audiobuffer = None
# store the logger instance
if logger is None:
self.logger = parent.parent.logger
else:
self.logger = logger
self.setObjectName("Scope_Widget")
self.gridLayout = QtGui.QGridLayout(self)
self.gridLayout.setObjectName("gridLayout")
self.PlotZoneUp = TimePlot(self, self.logger)
self.PlotZoneUp.setObjectName("PlotZoneUp")
self.gridLayout.addWidget(self.PlotZoneUp, 0, 0, 1, 1)
self.setStyleSheet(STYLESHEET)
self.settings_dialog = Scope_Settings_Dialog(self, self.logger)
# method
def set_buffer(self, buffer):
self.audiobuffer = buffer
# method
def update(self):
if not self.isVisible():
return
time = SMOOTH_DISPLAY_TIMER_PERIOD_MS/1000.
#basic trigger capability on leading edge
floatdata = self.audiobuffer.data(time*SAMPLING_RATE)
twoChannels = False
if floatdata.shape[0] > 1:
twoChannels = True
# trigger on the first channel only
floatdata = floatdata[0,:]
max = floatdata.max()
trigger_level = max*2./3.
trigger_pos = where((floatdata[:-1] < trigger_level)*(floatdata[1:] >= trigger_level))[0]
if len(trigger_pos) > 0:
shift = time*SAMPLING_RATE - trigger_pos[0]
else:
shift = 0
floatdata = self.audiobuffer.data(time*SAMPLING_RATE + shift)
floatdata = floatdata[:, 0 : time*SAMPLING_RATE]
y = floatdata[0,::-1] #- floatdata.mean()
if twoChannels:
y2 = floatdata[1,::-1] #- floatdata.mean()
dBscope = False
if dBscope:
dBmin = -50.
y = sign(y)*(20*log10(abs(y))).clip(dBmin, 0.)/(-dBmin) + sign(y)*1.
if twoChannels:
y2 = sign(y2)*(20*log10(abs(y2))).clip(dBmin, 0.)/(-dBmin) + sign(y2)*1.
time = linspace(0., len(y)/float(SAMPLING_RATE), len(y))
if twoChannels:
self.PlotZoneUp.setdataTwoChannels(time, y, y2)
else:
self.PlotZoneUp.setdata(time, y)
# slot
def settings_called(self, checked):
self.settings_dialog.show()
# method
def saveState(self, settings):
self.settings_dialog.saveState(settings)
# method
def restoreState(self, settings):
self.settings_dialog.restoreState(settings)