def _copy_options(self):
"""
Set options for copying to/from clipboard or file.
"""
self.opt_widget = CSV_option_box(self) # important: Handle must be class attribute
#self.opt_widget.show() # modeless dialog, i.e. non-blocking
self.opt_widget.exec_() # modal dialog (blocking)
def _open_csv_win(self):
"""
Pop-up window for CSV options
"""
if self.but_csv_options.isChecked():
qstyle_widget(self.but_csv_options, "changed")
else:
qstyle_widget(self.but_csv_options, "normal")
if dirs.csv_options_handle is None:
# no handle to the window? Create a new instance
if self.but_csv_options.isChecked():
# Important: Handle to window must be class attribute, otherwise it
# (and the attached window) is deleted immediately when it goes
# out of scope
dirs.csv_options_handle = CSV_option_box(self)
dirs.csv_options_handle.sig_tx.connect(self.process_sig_rx)
dirs.csv_options_handle.show() # modeless i.e. non-blocking popup window
else:
if not self.but_csv_options.isChecked(): # this should not happen
if dirs.csv_options_handle is None:
logger.warning("CSV options window is already closed!")
else:
dirs.csv_options_handle.close()
self.emit({'ui_changed': 'csv'})
class Input_Coeffs(QWidget):
"""
Create widget with a (sort of) model-view architecture for viewing /
editing / entering data contained in `self.ba` which is a list of two numpy
arrays:
- `self.ba[0]` contains the numerator coefficients ("b")
- `self.ba[1]` contains the denominator coefficients ("a")
The list don't neccessarily have the same length but they are always defined.
For FIR filters, `self.ba[1][0] = 1`, all other elements are zero.
The length of both lists can be egalized with `self._equalize_ba_length()`.
Views / formats are handled by the ItemDelegate() class.
"""
sig_tx = pyqtSignal(object) # emitted when filter has been saved
sig_rx = pyqtSignal(object) # incoming from input_tab_widgets
def __init__(self, parent):
super(Input_Coeffs, self).__init__(parent)
self.opt_widget = None # handle for pop-up options widget
self.tool_tip = "Display and edit filter coefficients."
self.tab_label = "b,a"
self.data_changed = True # initialize flag: filter data has been changed
self.fx_specs_changed = True # fixpoint specs have been changed outside
self.ui = Input_Coeffs_UI(self) # create the UI part with buttons etc.
self._construct_UI()
#------------------------------------------------------------------------------
def process_sig_rx(self, dict_sig=None):
"""
Process signals coming from sig_rx
"""
logger.debug("process_sig_rx(): vis={0}\n{1}"\
.format(self.isVisible(), pprint_log(dict_sig)))
if dict_sig['sender'] == __name__:
logger.debug("Stopped infinite loop\n{0}".format(pprint_log(dict_sig)))
return
if 'ui_changed' in dict_sig and dict_sig['ui_changed'] == 'csv':
self.ui._set_load_save_icons()
elif self.isVisible():
if self.data_changed or 'data_changed' in dict_sig:
self.load_dict()
self.data_changed = False
if self.fx_specs_changed or ('fx_sim' in dict_sig and dict_sig['fx_sim'] == 'specs_changed'):
self.qdict2ui()
self.fx_specs_changed = False
else:
# TODO: draw wouldn't be necessary for 'view_changed', only update view
if 'data_changed' in dict_sig:
self.data_changed = True
elif 'fx_sim' in dict_sig and dict_sig['fx_sim'] == 'specs_changed':
self.fx_specs_changed = True
#------------------------------------------------------------------------------
def _construct_UI(self):
"""
Intitialize the widget, consisting of:
- top chkbox row
- coefficient table
- two bottom rows with action buttons
"""
# ---------------------------------------------------------------------
# Coefficient table widget
# ---------------------------------------------------------------------
self.tblCoeff = QTableWidget(self)
self.tblCoeff.setAlternatingRowColors(True)
self.tblCoeff.horizontalHeader().setHighlightSections(True) # highlight when selected
self.tblCoeff.horizontalHeader().setFont(self.ui.bfont)
# self.tblCoeff.QItemSelectionModel.Clear
self.tblCoeff.setDragEnabled(True)
# self.tblCoeff.setDragDropMode(QAbstractItemView.InternalMove) # doesn't work like intended
self.tblCoeff.setItemDelegate(ItemDelegate(self))
# ============== Main UI Layout =====================================
layVMain = QVBoxLayout()
layVMain.setAlignment(Qt.AlignTop) # this affects only the first widget (intended here)
layVMain.addWidget(self.ui)
layVMain.addWidget(self.tblCoeff)
layVMain.setContentsMargins(*params['wdg_margins'])
self.setLayout(layVMain)
self.myQ = fx.Fixed(fb.fil[0]['fxqc']['QCB']) # initialize fixpoint object
self.load_dict() # initialize + refresh table with default values from filter dict
# TODO: this needs to be optimized - self._refresh is being called in both routines
self._set_number_format()
#----------------------------------------------------------------------
# GLOBAL SIGNALS & SLOTs
#----------------------------------------------------------------------
self.sig_rx.connect(self.process_sig_rx)
#----------------------------------------------------------------------
# LOCAL (UI) SIGNALS & SLOTs
#----------------------------------------------------------------------
# wdg.textChanged() is emitted when contents of widget changes
# wdg.textEdited() is only emitted for user changes
# wdg.editingFinished() is only emitted for user changes
self.ui.butEnable.clicked.connect(self._refresh_table)
self.ui.spnDigits.editingFinished.connect(self._refresh_table)
self.ui.cmbQFrmt.currentIndexChanged.connect(self._set_number_format)
self.ui.butFromTable.clicked.connect(self._copy_from_table)
self.ui.butToTable.clicked.connect(self._copy_to_table)
self.ui.cmbFilterType.currentIndexChanged.connect(self._filter_type)
self.ui.butDelCells.clicked.connect(self._delete_cells)
self.ui.butAddCells.clicked.connect(self._add_cells)
self.ui.butLoad.clicked.connect(self.load_dict)
self.ui.butSave.clicked.connect(self._save_dict)
self.ui.butClear.clicked.connect(self._clear_table)
self.ui.ledEps.editingFinished.connect(self._set_eps)
self.ui.butSetZero.clicked.connect(self._set_coeffs_zero)
# store new settings and refresh table
self.ui.cmbFormat.currentIndexChanged.connect(self.ui2qdict)
self.ui.cmbQOvfl.currentIndexChanged.connect(self.ui2qdict)
self.ui.cmbQuant.currentIndexChanged.connect(self.ui2qdict)
self.ui.ledWF.editingFinished.connect(self.ui2qdict)
self.ui.ledWI.editingFinished.connect(self.ui2qdict)
self.ui.ledW.editingFinished.connect(self._W_changed)
self.ui.ledScale.editingFinished.connect(self._set_scale)
self.ui.butQuant.clicked.connect(self.quant_coeffs)
self.ui.sig_tx.connect(self.sig_tx)
# =====================================================================
#------------------------------------------------------------------------------
def _filter_type(self, ftype=None):
"""
Get / set 'FIR' and 'IIR' filter from cmbFilterType combobox and set filter
dict and table properties accordingly.
When argument fil_type is not None, set the combobox accordingly.
Reload from filter dict unless ftype is specified [does this make sense?!]
"""
if ftype in {'FIR', 'IIR'}:
ret=qset_cmb_box(self.ui.cmbFilterType, ftype)
if ret == -1:
logger.warning("Unknown filter type {0}".format(ftype))
if self.ui.cmbFilterType.currentText() == 'IIR':
fb.fil[0]['ft'] = 'IIR'
self.col = 2
self.tblCoeff.setColumnCount(2)
self.tblCoeff.setHorizontalHeaderLabels(["b", "a"])
else:
fb.fil[0]['ft'] = 'FIR'
self.col = 1
self.tblCoeff.setColumnCount(1)
self.tblCoeff.setHorizontalHeaderLabels(["b"])
self.ba[1] = np.zeros_like(self.ba[1]) # enforce FIR filter
self.ba[1][0] = 1.
self._equalize_ba_length()
qstyle_widget(self.ui.butSave, 'changed')
self._refresh_table()
#------------------------------------------------------------------------------
def _W_changed(self):
"""
Set fractional and integer length `WF` and `WI` when wordlength `W` has
been changed. Try to preserve `WI` or `WF` settings depending on the
number format (integer or fractional).
"""
W = safe_eval(self.ui.ledW.text(), self.myQ.W, return_type='int', sign='pos')
if W < 2:
logger.warn("W must be > 1, restoring previous value.")
W = self.myQ.W # fall back to previous value
self.ui.ledW.setText(str(W))
if qget_cmb_box(self.ui.cmbQFrmt) == 'qint': # integer format, preserve WI bits
WI = W - self.myQ.WF - 1
self.ui.ledWI.setText(str(WI))
self.ui.ledScale.setText(str(1 << (W-1)))
else: # fractional format, preserve WF bit setting
WF = W - self.myQ.WI - 1
if WF < 0:
self.ui.ledWI.setText(str(W - 1))
WF = 0
self.ui.ledWF.setText(str(WF))
self.ui2qdict()
#------------------------------------------------------------------------------
def _set_scale(self):
"""
Triggered by `ui.ledScale`
Set scale for calculating floating point value from fixpoint representation
and vice versa
"""
# if self.ui.ledScale.isModified() ... self.ui.ledScale.setModified(False)
scale = safe_eval(self.ui.ledScale.text(), self.myQ.scale, return_type='float', sign='pos')
self.ui.ledScale.setText(str(scale))
self.ui2qdict()
#------------------------------------------------------------------------------
def _refresh_table_item(self, row, col):
"""
Refresh the table item with the index `row, col` from self.ba
"""
item = self.tblCoeff.item(row, col)
if item: # does item exist?
item.setText(str(self.ba[col][row]).strip('()'))
else: # no, construct it:
self.tblCoeff.setItem(row,col,QTableWidgetItem(
str(self.ba[col][row]).strip('()')))
self.tblCoeff.item(row, col).setTextAlignment(Qt.AlignRight|Qt.AlignCenter)
#------------------------------------------------------------------------------
def _refresh_table(self):
"""
(Re-)Create the displayed table from `self.ba` (list with 2 one-dimensional
numpy arrays). Data is displayed via `ItemDelegate.displayText()` in
the number format set by `self.frmt`.
- self.ba[0] -> b coefficients
- self.ba[1] -> a coefficients
The table dimensions are set according to the filter type set in
`fb.fil[0]['ft']` which is either 'FIR' or 'IIR' and by the number of
rows in `self.ba`.
Called at the end of nearly every method.
"""
if np.ndim(self.ba) == 1 or fb.fil[0]['ft'] == 'FIR':
self.num_rows = len(self.ba[0])
else:
self.num_rows = max(len(self.ba[1]), len(self.ba[0]))
# logger.warning("np.shape(ba) = {0}".format(np.shape(self.ba)))
params['FMT_ba'] = int(self.ui.spnDigits.text())
# When format is 'float', disable all fixpoint options
is_float = (qget_cmb_box(self.ui.cmbFormat, data=False).lower() == 'float')
self.ui.spnDigits.setVisible(is_float) # number of digits can only be selected
self.ui.lblDigits.setVisible(is_float) # for format = 'float'
self.ui.cmbQFrmt.setVisible(not is_float) # hide unneeded widgets for format = 'float'
self.ui.lbl_W.setVisible(not is_float)
self.ui.ledW.setVisible(not is_float)
self.ui.frmQSettings.setVisible(not is_float) # hide all q-settings for float
if self.ui.butEnable.isChecked():
self.ui.butEnable.setIcon(QIcon(':/circle-x.svg'))
self.ui.frmButtonsCoeffs.setVisible(True)
self.tblCoeff.setVisible(True)
# check whether filter is FIR and only needs one column
if fb.fil[0]['ft'] == 'FIR':
self.num_cols = 1
self.tblCoeff.setColumnCount(1)
self.tblCoeff.setHorizontalHeaderLabels(["b"])
qset_cmb_box(self.ui.cmbFilterType, 'FIR')
else:
self.num_cols = 2
self.tblCoeff.setColumnCount(2)
self.tblCoeff.setHorizontalHeaderLabels(["b", "a"])
qset_cmb_box(self.ui.cmbFilterType, 'IIR')
self.ba[1][0] = 1.0 # restore fa[0] = 1 of denonimator polynome
self.tblCoeff.setRowCount(self.num_rows)
self.tblCoeff.setColumnCount(self.num_cols)
# Create strings for index column (vertical header), starting with "0"
idx_str = [str(n) for n in range(self.num_rows)]
self.tblCoeff.setVerticalHeaderLabels(idx_str)
self.tblCoeff.blockSignals(True)
for col in range(self.num_cols):
for row in range(self.num_rows):
self._refresh_table_item(row, col)
# make a[0] selectable but not editable
if fb.fil[0]['ft'] == 'IIR':
item = self.tblCoeff.item(0,1)
item.setFlags(Qt.ItemIsSelectable| Qt.ItemIsEnabled)
item.setFont(self.ui.bfont)
self.tblCoeff.blockSignals(False)
self.tblCoeff.resizeColumnsToContents()
self.tblCoeff.resizeRowsToContents()
self.tblCoeff.clearSelection()
else:
self.ui.frmButtonsCoeffs.setVisible(False)
self.ui.butEnable.setIcon(QIcon(':/circle-check.svg'))
self.tblCoeff.setVisible(False)
#------------------------------------------------------------------------------
def load_dict(self):
"""
Load all entries from filter dict `fb.fil[0]['ba']` into the coefficient
list `self.ba` and update the display via `self._refresh_table()`.
The filter dict is a "normal" 2D-numpy float array for the b and a coefficients
while the coefficient register `self.ba` is a list of two float ndarrays to allow
for different lengths of b and a subarrays while adding / deleting items.
"""
self.ba = [0., 0.] # initial list with two elements
self.ba[0] = np.array(fb.fil[0]['ba'][0]) # deep copy from filter dict to
self.ba[1] = np.array(fb.fil[0]['ba'][1]) # coefficient register
# set quantization comboBoxes from dictionary
self.qdict2ui()
self._refresh_table()
qstyle_widget(self.ui.butSave, 'normal')
#------------------------------------------------------------------------------
def _copy_options(self):
"""
Set options for copying to/from clipboard or file.
"""
self.opt_widget = CSV_option_box(self) # important: Handle must be class attribute
#self.opt_widget.show() # modeless dialog, i.e. non-blocking
self.opt_widget.exec_() # modal dialog (blocking)
#------------------------------------------------------------------------------
def _copy_from_table(self):
"""
Copy data from coefficient table `self.tblCoeff` to clipboard / file in
CSV format.
"""
qtable2text(self.tblCoeff, self.ba, self, 'ba', self.myQ.frmt, title="Export Filter Coefficients")
#------------------------------------------------------------------------------
def _copy_to_table(self):
"""
Read data from clipboard / file and copy it to `self.ba` as float / cmplx
# TODO: More checks for swapped row <-> col, single values, wrong data type ...
"""
data_str = qtext2table(self, 'ba', title="Import Filter Coefficients") # returns ndarray of str
if data_str is None: # file operation has been aborted or some other error
return
logger.debug("importing data: dim - shape = {0} - {1} - {2}\n{3}"\
.format(type(data_str), np.ndim(data_str), np.shape(data_str), data_str))
conv = self.myQ.frmt2float # frmt2float_vec?
frmt = self.myQ.frmt
if np.ndim(data_str) > 1:
num_cols, num_rows = np.shape(data_str)
orientation_horiz = num_cols > num_rows # need to transpose data
elif np.ndim(data_str) == 1:
num_rows = len(data_str)
num_cols = 1
orientation_horiz = False
else:
logger.error("Imported data is a single value or None.")
return None
logger.info("_copy_to_table: c x r = {0} x {1}".format(num_cols, num_rows))
if orientation_horiz:
self.ba = [[],[]]
for c in range(num_cols):
self.ba[0].append(conv(data_str[c][0], frmt))
if num_rows > 1:
self.ba[1].append(conv(data_str[c][1], frmt))
if num_rows > 1:
self._filter_type(ftype='IIR')
else:
self._filter_type(ftype='FIR')
else:
self.ba[0] = [conv(s, frmt) for s in data_str[0]]
if num_cols > 1:
self.ba[1] = [conv(s, frmt) for s in data_str[1]]
self._filter_type(ftype='IIR')
else:
self.ba[1] = [1]
self._filter_type(ftype='FIR')
self.ba[0] = np.asarray(self.ba[0])
self.ba[1] = np.asarray(self.ba[1])
self._equalize_ba_length()
qstyle_widget(self.ui.butSave, 'changed')
self._refresh_table()
#------------------------------------------------------------------------------
def _set_number_format(self):
"""
Triggered by `contruct_UI()`, `qdict2ui()`and by `ui.cmbQFrmt.currentIndexChanged()`
Set one of three number formats: Integer, fractional, normalized fractional
(triggered by self.ui.cmbQFrmt combobox)
"""
qfrmt = qget_cmb_box(self.ui.cmbQFrmt)
is_qfrac = False
W = safe_eval(self.ui.ledW.text(), self.myQ.W, return_type='int', sign='pos')
if qfrmt == 'qint':
self.ui.ledWI.setText(str(W - 1))
self.ui.ledWF.setText("0")
elif qfrmt == 'qnfrac': # normalized fractional format
self.ui.ledWI.setText("0")
self.ui.ledWF.setText(str(W - 1))
else: # qfrmt == 'qfrac':
is_qfrac = True
WI = safe_eval(self.ui.ledWI.text(), self.myQ.WI, return_type='int')
self.ui.ledScale.setText(str(1 << WI))
self.ui.ledWI.setEnabled(is_qfrac)
self.ui.lblDot.setEnabled(is_qfrac)
self.ui.ledWF.setEnabled(is_qfrac)
self.ui.ledW.setEnabled(not is_qfrac)
self.ui.ledScale.setEnabled(False)
self.ui2qdict() # save UI to dict and to class attributes
#------------------------------------------------------------------------------
def _update_MSB_LSB(self):
"""
Update the infos (LSB, MSB, Max)
"""
self.ui.lblLSB.setText("{0:.{1}g}".format(self.myQ.LSB, params['FMT_ba']))
self.ui.lblMSB.setText("{0:.{1}g}".format(self.myQ.MSB, params['FMT_ba']))
self.ui.lblMAX.setText("{0:.6g}".format(self.myQ.MAX))
#------------------------------------------------------------------------------
def qdict2ui(self):
"""
Triggered by:
- process_sig_rx() if self.fx_specs_changed or dict_sig['fx_sim'] == 'specs_changed'
-
Set the UI from the quantization dict and update the fixpoint object.
When neither WI == 0 nor WF == 0, set the quantization format to general
fractional format qfrac.
"""
self.ui.ledWI.setText(qstr(fb.fil[0]['fxqc']['QCB']['WI']))
self.ui.ledWF.setText(qstr(fb.fil[0]['fxqc']['QCB']['WF']))
self.ui.ledW.setText(qstr(fb.fil[0]['fxqc']['QCB']['W']))
if fb.fil[0]['fxqc']['QCB']['WI'] != 0 and fb.fil[0]['fxqc']['QCB']['WF'] != 0:
qset_cmb_box(self.ui.cmbQFrmt, 'qfrac', data=True)
self.ui.ledScale.setText(qstr(fb.fil[0]['fxqc']['QCB']['scale']))
qset_cmb_box(self.ui.cmbQuant, fb.fil[0]['fxqc']['QCB']['quant'])
qset_cmb_box(self.ui.cmbQOvfl, fb.fil[0]['fxqc']['QCB']['ovfl'])
self.myQ.setQobj(fb.fil[0]['fxqc']['QCB']) # update class attributes
self._set_number_format() # quant format has been changed, update display
self._update_MSB_LSB()
#------------------------------------------------------------------------------
def ui2qdict(self):
"""
Triggered by modifying
`ui.cmbFormat`, `ui.cmbQOvfl`, `ui.cmbQuant`, `ui.ledWF`, `ui.ledWI`
or `ui.ledW` (via `_W_changed()`)
or `ui.cmbQFrmt` (via `_set_number_format()`)
or `ui.ledScale()` (via `_set_scale()`)
or 'qdict2ui()' via `_set_number_format()`
Read out the settings of the quantization comboboxes.
- Store them in the filter dict `fb.fil[0]['fxqc']['QCB']` and as class
attributes in the fixpoint object `self.myQ`
- Emit a signal with `'view_changed':'q_coeff'`
- Refresh the table
"""
fb.fil[0]['fxqc']['QCB'] = {
'WI':safe_eval(self.ui.ledWI.text(), self.myQ.WI, return_type='int'),
'WF':safe_eval(self.ui.ledWF.text(), self.myQ.WF, return_type='int', sign='poszero'),
'W':safe_eval(self.ui.ledW.text(), self.myQ.W, return_type='int', sign='pos'),
'quant':qstr(self.ui.cmbQuant.currentText()),
'ovfl':qstr(self.ui.cmbQOvfl.currentText()),
'frmt':qstr(self.ui.cmbFormat.currentText().lower()),
'scale':qstr(self.ui.ledScale.text())
}
self.myQ.setQobj(fb.fil[0]['fxqc']['QCB']) # update fixpoint object
self.sig_tx.emit({'sender':__name__, 'view_changed':'q_coeff'})
self._update_MSB_LSB()
self._refresh_table()
#------------------------------------------------------------------------------
def _save_dict(self):
"""
Save the coefficient register `self.ba` to the filter dict `fb.fil[0]['ba']`.
"""
logger.debug("_save_dict called")
fb.fil[0]['N'] = max(len(self.ba[0]), len(self.ba[1])) - 1
self.ui2qdict()
if fb.fil[0]['ft'] == 'IIR':
fb.fil[0]['fc'] = 'Manual_IIR'
else:
fb.fil[0]['fc'] = 'Manual_FIR'
# save, check and convert coeffs, check filter type
try:
fil_save(fb.fil[0], self.ba, 'ba', __name__)
except Exception as e:
# catch exception due to malformatted coefficients:
logger.error("While saving the filter coefficients, "
"the following error occurred:\n{0}".format(e))
if __name__ == '__main__':
self.load_dict() # only needed for stand-alone test
self.sig_tx.emit({'sender':__name__, 'data_changed':'input_coeffs'})
# -> input_tab_widgets
qstyle_widget(self.ui.butSave, 'normal')
#------------------------------------------------------------------------------
def _clear_table(self):
"""
Clear self.ba: Initialize coeff for a poles and a zero @ origin,
a = b = [1; 0].
Refresh QTableWidget
"""
self.ba = [np.asarray([1., 0.]), np.asarray([1., 0.])]
self._refresh_table()
qstyle_widget(self.ui.butSave, 'changed')
#------------------------------------------------------------------------------
def _equalize_ba_length(self):
"""
test and equalize if b and a subarray have different lengths:
"""
try:
a_len = len(self.ba[1])
except IndexError:
self.ba.append(np.array(1))
a_len = 1
D = len(self.ba[0]) - a_len
if D > 0: # b is longer than a
self.ba[1] = np.append(self.ba[1], np.zeros(D))
elif D < 0: # a is longer than b
if fb.fil[0]['ft'] == 'IIR':
self.ba[0] = np.append(self.ba[0], np.zeros(-D))
else:
self.ba[1] = self.ba[1][:D] # discard last D elements of a
#------------------------------------------------------------------------------
def _delete_cells(self):
"""
Delete all selected elements in self.ba by:
- determining the indices of all selected cells in the P and Z arrays
- deleting elements with those indices
- equalizing the lengths of b and a array by appending the required
number of zeros.
When nothing is selected, delete the last row.
Finally, the QTableWidget is refreshed from self.ba.
"""
sel = qget_selected(self.tblCoeff)['sel'] # get indices of all selected cells
if not any(sel) and len(self.ba[0]) > 0: # delete last row
self.ba = np.delete(self.ba, -1, axis=1)
elif np.all(sel[0] == sel[1]) or fb.fil[0]['ft'] == 'FIR':
# only complete rows selected or FIR -> delete row
self.ba = np.delete(self.ba, sel[0], axis=1)
else:
self.ba[0][sel[0]] = 0
self.ba[1][sel[1]] = 0
#self.ba[0] = np.delete(self.ba[0], sel[0])
#self.ba[1] = np.delete(self.ba[1], sel[1])
# test and equalize if b and a array have different lengths:
self._equalize_ba_length()
# if length is less than 2, clear the table: this ain't no filter!
if len(self.ba[0]) < 2:
self._clear_table() # sets 'changed' attribute
else:
self._refresh_table()
qstyle_widget(self.ui.butSave, 'changed')
#------------------------------------------------------------------------------
def _add_cells(self):
"""
Add the number of selected rows to self.ba and fill new cells with
zeros from the bottom. If nothing is selected, add one row at the bottom.
Refresh QTableWidget.
"""
# get indices of all selected cells
sel = qget_selected(self.tblCoeff)['sel']
if not any(sel): # nothing selected, append one row of zeros to table
self.ba = np.insert(self.ba, len(self.ba[0]), 0, axis=1) #"insert" row after last
elif np.all(sel[0] == sel[1]) or fb.fil[0]['ft'] == 'FIR': # only complete rows selected
self.ba = np.insert(self.ba, sel[0], 0, axis=1)
# elif len(sel[0]) == len(sel[1]):
# self.ba = np.insert(self.ba, sel, 0, axis=1)
# not allowed, sel needs to be a scalar or one-dimensional
else:
logger.warning("It is only possible to insert complete rows!")
# The following doesn't work because the subarrays wouldn't have
# the same length for a moment
#self.ba[0] = np.insert(self.ba[0], sel[0], 0)
#self.ba[1] = np.insert(self.ba[1], sel[1], 0)
return
# insert 'sel' contiguous rows before 'row':
# self.ba[0] = np.insert(self.ba[0], row, np.zeros(sel))
self._equalize_ba_length()
self._refresh_table()
# don't tag as 'changed' when only zeros have been added at the end
if any(sel):
qstyle_widget(self.ui.butSave, 'changed')
#------------------------------------------------------------------------------
def _set_eps(self):
"""
Set all coefficients = 0 in self.ba with a magnitude less than eps
and refresh QTableWidget
"""
self.ui.eps = safe_eval(self.ui.ledEps.text(), return_type='float', sign='pos', alt_expr=self.ui.eps)
self.ui.ledEps.setText(str(self.ui.eps))
#------------------------------------------------------------------------------
def _set_coeffs_zero(self):
"""
Set all coefficients = 0 in self.ba with a magnitude less than eps
and refresh QTableWidget
"""
self._set_eps()
idx = qget_selected(self.tblCoeff)['idx'] # get all selected indices
test_val = 0. # value against which array is tested
targ_val = 0. # value which is set when condition is true
changed = False
if not idx: # nothing selected, check whole table
b_close = np.logical_and(np.isclose(self.ba[0], test_val, rtol=0, atol=self.ui.eps),
(self.ba[0] != targ_val))
if np.any(b_close): # found at least one coeff where condition was true
self.ba[0] = np.where(b_close, targ_val, self.ba[0])
changed = True
if fb.fil[0]['ft'] == 'IIR':
a_close = np.logical_and(np.isclose(self.ba[1], test_val, rtol=0, atol=self.ui.eps),
(self.ba[1] != targ_val))
if np.any(a_close):
self.ba[1] = np.where(a_close, targ_val, self.ba[1])
changed = True
else: # only check selected cells
for i in idx:
if np.logical_and(np.isclose(self.ba[i[0]][i[1]], test_val, rtol=0, atol=self.ui.eps),
(self.ba[i[0]][i[1]] != targ_val)):
self.ba[i[0]][i[1]] = targ_val
changed = True
if changed:
qstyle_widget(self.ui.butSave, 'changed') # mark save button as changed
self._refresh_table()
#------------------------------------------------------------------------------
def quant_coeffs(self):
"""
Quantize selected / all coefficients in self.ba and refresh QTableWidget
"""
idx = qget_selected(self.tblCoeff)['idx'] # get all selected indices
if not idx: # nothing selected, quantize all elements
self.ba[0] = self.myQ.fixp(self.ba, scaling='multdiv')[0]
if fb.fil[0]['ft'] == "IIR":
self.ba[1] = self.myQ.fixp(self.ba, scaling='multdiv')[0]
else:
for i in idx:
self.ba[i[0]][i[1]] = self.myQ.fixp(self.ba[i[0]][i[1]], scaling = 'multdiv')
qstyle_widget(self.ui.butSave, 'changed')
self._refresh_table()