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from typing import TYPE_CHECKING
from qtpy.QtCore import QTimer
from qtpy.QtWidgets import QWidget
from ..bases.elements import ToolDisplayed
from ..ui.jack_bar import Ui_Form as JackUiForm
if TYPE_CHECKING:
from patchbay_manager import PatchbayManager
class BarWidgetJack(QWidget):
def __init__(self, parent):
super().__init__(parent)
self.ui = JackUiForm()
self.ui.setupUi(self)
self.mng: 'PatchbayManager' = None # type:ignore
self._waiting_buffer_change = False
self._buffer_change_from_osc = False
self.ui.pushButtonXruns.clicked.connect(
self.reset_xruns)
self.ui.comboBoxBuffer.currentIndexChanged.connect(
self.change_buffersize)
self._buffer_sizes = [16, 32, 64, 128, 256, 512,
1024, 2048, 4096, 8192]
for size in self._buffer_sizes:
self.ui.comboBoxBuffer.addItem(str(size), size)
self._samplerate = 48000
self._current_buffer_size = self.ui.comboBoxBuffer.currentData()
self._xruns_counter = 0
self._jack_running = True
self.ui.labelJackNotStarted.setVisible(False)
def _set_latency(self, buffer_size=None, samplerate=None):
if buffer_size is None:
buffer_size = self._current_buffer_size
if samplerate is None:
samplerate = self._samplerate
latency = 1000 * buffer_size / samplerate
self.ui.labelLatency.setText("%.2f ms" % latency)
def set_samplerate(self, samplerate: int):
self._samplerate = samplerate
str_sr = str(samplerate)
str_samplerate = str_sr
# separate the three last digits from begin with a space
# 48000 -> 48 000
if len(str_sr) > 3:
str_samplerate = str_sr[:-3] + ' ' + str_sr[-3:]
str_samplerate += ' Hz'
self.ui.labelSamplerate.setText(str_samplerate)
self._set_latency(samplerate=samplerate)
def set_buffer_size(self, buffer_size: int):
self._waiting_buffer_change = False
self.ui.comboBoxBuffer.setEnabled(True)
if self.ui.comboBoxBuffer.currentData() == buffer_size:
self._set_latency(buffer_size=buffer_size)
return
self._buffer_change_from_osc = True
index = self.ui.comboBoxBuffer.findData(buffer_size)
# manage exotic buffer sizes
# findData returns -1 if buffer_size is not in combo box values
if index < 0:
index = 0
for size in self._buffer_sizes:
if size > buffer_size:
break
index += 1
self._buffer_sizes.insert(index, buffer_size)
self.ui.comboBoxBuffer.insertItem(
index, str(buffer_size), buffer_size)
self.ui.comboBoxBuffer.setCurrentIndex(index)
self._current_buffer_size = buffer_size
self._set_latency(buffer_size=buffer_size)
def update_xruns(self):
self.ui.pushButtonXruns.setText("%i Xruns " % self._xruns_counter)
def add_xrun(self):
self._xruns_counter += 1
self.update_xruns()
def reset_xruns(self):
self._xruns_counter = 0
self.update_xruns()
def set_dsp_load(self, dsp_load: int):
self.ui.progressBarDsp.setValue(dsp_load)
def change_buffersize(self, index: int):
# prevent loop of buffer size change
if self._buffer_change_from_osc:
# change_buffersize not called by user
# but ensure next time it could be
self._buffer_change_from_osc = False
return
self.ui.comboBoxBuffer.setEnabled(False)
self._waiting_buffer_change = True
if self.mng is not None:
self.mng.change_buffersize(self.ui.comboBoxBuffer.currentData())
# self.buffer_size_change_order.emit(
# self.ui.comboBoxBuffer.currentData())
# only in the case no set_buffer_size message come back
QTimer.singleShot(10000, self._re_enable_buffer_combobox)
def _re_enable_buffer_combobox(self):
if self._waiting_buffer_change:
self.set_buffer_size(self._current_buffer_size)
def set_patchbay_manager(self, mng: 'PatchbayManager'):
self.mng = mng
def set_jack_running(self, yesno: bool, use_alsa_midi=False):
self._jack_running = yesno
self.ui.labelJackNotStarted.setVisible(not yesno)
if not yesno:
self.ui.labelBuffer.setVisible(False)
self.ui.comboBoxBuffer.setVisible(False)
self.ui.labelSamplerate.setVisible(False)
self.ui.labelPipeSeparator.setVisible(False)
self.ui.labelLatency.setVisible(False)
self.ui.pushButtonXruns.setVisible(False)
self.ui.progressBarDsp.setVisible(False)
def change_tools_displayed(self, tools_displayed: ToolDisplayed):
if not self._jack_running:
self.set_jack_running(False)
return
SR_AND_LT = ToolDisplayed.SAMPLERATE | ToolDisplayed.LATENCY
self.ui.labelBuffer.setVisible(
bool(tools_displayed & ToolDisplayed.BUFFER_SIZE))
self.ui.comboBoxBuffer.setVisible(
bool(tools_displayed & ToolDisplayed.BUFFER_SIZE))
self.ui.labelSamplerate.setVisible(
bool(tools_displayed & ToolDisplayed.SAMPLERATE))
self.ui.labelPipeSeparator.setVisible(
bool(tools_displayed & SR_AND_LT == SR_AND_LT))
self.ui.labelLatency.setVisible(
bool(tools_displayed & ToolDisplayed.LATENCY))
self.ui.pushButtonXruns.setVisible(
bool(tools_displayed & ToolDisplayed.XRUNS))
self.ui.progressBarDsp.setVisible(
bool(tools_displayed & ToolDisplayed.DSP_LOAD))
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