#!/usr/bin/env python ############################################################################# ## ## Copyright (C) 2013 Riverbank Computing Limited. ## Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). ## All rights reserved. ## ## This file is part of the examples of PyQt. ## ## $QT_BEGIN_LICENSE:BSD$ ## You may use this file under the terms of the BSD license as follows: ## ## "Redistribution and use in source and binary forms, with or without ## modification, are permitted provided that the following conditions are ## met: ## * Redistributions of source code must retain the above copyright ## notice, this list of conditions and the following disclaimer. ## * Redistributions in binary form must reproduce the above copyright ## notice, this list of conditions and the following disclaimer in ## the documentation and/or other materials provided with the ## distribution. ## * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor ## the names of its contributors may be used to endorse or promote ## products derived from this software without specific prior written ## permission. ## ## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." ## $QT_END_LICENSE$ ## ############################################################################# from PyQt5.QtMultimedia import QAudio, QAudioDeviceInfo, QAudioFormat from PyQt5.QtWidgets import QApplication, QTableWidgetItem, QMainWindow from ui_audiodevicesbase import Ui_AudioDevicesBase class AudioDevicesBase(QMainWindow, Ui_AudioDevicesBase): def __init__(self, parent=None): super(AudioDevicesBase, self).__init__(parent) self.setupUi(self) class AudioTest(AudioDevicesBase): def __init__(self, parent=None): super(AudioTest, self).__init__(parent) self.deviceInfo = QAudioDeviceInfo() self.settings = QAudioFormat() self.mode = QAudio.AudioOutput self.testButton.clicked.connect(self.test) self.modeBox.activated.connect(self.modeChanged) self.deviceBox.activated.connect(self.deviceChanged) self.sampleRateBox.activated.connect(self.sampleRateChanged) self.channelsBox.activated.connect(self.channelChanged) self.codecsBox.activated.connect(self.codecChanged) self.sampleSizesBox.activated.connect(self.sampleSizeChanged) self.sampleTypesBox.activated.connect(self.sampleTypeChanged) self.endianBox.activated.connect(self.endianChanged) self.populateTableButton.clicked.connect(self.populateTable) self.modeBox.setCurrentIndex(0) self.modeChanged(0) self.deviceBox.setCurrentIndex(0) self.deviceChanged(0) def test(self): self.testResult.clear() if not self.deviceInfo.isNull(): if self.deviceInfo.isFormatSupported(self.settings): self.testResult.setText("Success") self.nearestSampleRate.setText("") self.nearestChannel.setText("") self.nearestCodec.setText("") self.nearestSampleSize.setText("") self.nearestSampleType.setText("") self.nearestEndian.setText("") else: nearest = self.deviceInfo.nearestFormat(self.settings) self.testResult.setText("Failed") self.nearestSampleRate.setText(str(nearest.sampleRate())) self.nearestChannel.setText(str(nearest.channelCount())) self.nearestCodec.setText(nearest.codec()) self.nearestSampleSize.setText(str(nearest.sampleSize())) self.nearestSampleType.setText( self.sampleTypeToString(nearest.sampleType())) self.nearestEndian.setText( self.endianToString(nearest.byteOrder())) else: self.testResult.setText("No Device") sampleTypeMap = { QAudioFormat.SignedInt: "SignedInt", QAudioFormat.UnSignedInt: "UnSignedInt", QAudioFormat.Float: "Float" } @classmethod def sampleTypeToString(cls, sampleType): return cls.sampleTypeMap.get(sampleType, "Unknown") endianMap = { QAudioFormat.LittleEndian: "LittleEndian", QAudioFormat.BigEndian: "BigEndian" } @classmethod def endianToString(cls, endian): return cls.endianMap.get(endian, "Unknown") def modeChanged(self, idx): self.testResult.clear() if idx == 0: self.mode = QAudio.AudioInput else: self.mode = QAudio.AudioOutput self.deviceBox.clear() for deviceInfo in QAudioDeviceInfo.availableDevices(self.mode): self.deviceBox.addItem(deviceInfo.deviceName(), deviceInfo) self.deviceBox.setCurrentIndex(0) self.deviceChanged(0) def deviceChanged(self, idx): self.testResult.clear() if self.deviceBox.count() == 0: return self.deviceInfo = self.deviceBox.itemData(idx) self.sampleRateBox.clear() sampleRatez = self.deviceInfo.supportedSampleRates() self.sampleRateBox.addItems([str(sr) for sr in sampleRatez]) if len(sampleRatez) != 0: self.settings.setSampleRate(sampleRatez[0]) self.channelsBox.clear() chz = self.deviceInfo.supportedChannelCounts() self.channelsBox.addItems([str(ch) for ch in chz]) if len(chz) != 0: self.settings.setChannelCount(chz[0]) self.codecsBox.clear() codecs = self.deviceInfo.supportedCodecs() self.codecsBox.addItems([str(c) for c in codecs]) if len(codecs) != 0: self.settings.setCodec(codecs[0]) # Create a failed condition. self.codecsBox.addItem("audio/test") self.sampleSizesBox.clear() sampleSizez = self.deviceInfo.supportedSampleSizes() self.sampleSizesBox.addItems([str(ss) for ss in sampleSizez]) if len(sampleSizez) != 0: self.settings.setSampleSize(sampleSizez[0]) self.sampleTypesBox.clear() sampleTypez = self.deviceInfo.supportedSampleTypes() self.sampleTypesBox.addItems( [self.sampleTypeToString(st) for st in sampleTypez]) if len(sampleTypez) != 0: self.settings.setSampleType(sampleTypez[0]) self.endianBox.clear() endianz = self.deviceInfo.supportedByteOrders() self.endianBox.addItems([self.endianToString(e) for e in endianz]) if len(endianz) != 0: self.settings.setByteOrder(endianz[0]) self.allFormatsTable.clearContents() def populateTable(self): row = 0 format = QAudioFormat() for codec in self.deviceInfo.supportedCodecs(): format.setCodec(codec) for sampleRate in self.deviceInfo.supportedSampleRates(): format.setSampleRate(sampleRate) for channels in self.deviceInfo.supportedChannelCounts(): format.setChannelCount(channels) for sampleType in self.deviceInfo.supportedSampleTypes(): format.setSampleType(sampleType) for sampleSize in self.deviceInfo.supportedSampleSizes(): format.setSampleSize(sampleSize) for endian in self.deviceInfo.supportedByteOrders(): format.setByteOrder(endian) if self.deviceInfo.isFormatSupported(format): self.allFormatsTable.setRowCount(row + 1) self.setFormatValue(row, 0, format.codec()) self.setFormatValue(row, 1, str(format.sampleRate())) self.setFormatValue(row, 2, str(format.channelCount())) self.setFormatValue(row, 3, self.sampleTypeToString( format.sampleType())) self.setFormatValue(row, 4, str(format.sampleSize())) self.setFormatValue(row, 5, self.endianToString( format.byteOrder())) row += 1 def setFormatValue(self, row, column, value): self.allFormatsTable.setItem(row, column, QTableWidgetItem(value)) def sampleRateChanged(self, idx): self.settings.setSampleRate(int(self.sampleRateBox.itemText(idx))) def channelChanged(self, idx): self.settings.setChannelCount(int(self.channelsBox.itemText(idx))) def codecChanged(self, idx): self.settings.setCodec(self.codecsBox.itemText(idx)) def sampleSizeChanged(self, idx): self.settings.setSampleSize(int(self.sampleSizesBox.itemText(idx))) def sampleTypeChanged(self, idx): sampleType = int(self.sampleTypesBox.itemText(idx)) if sampleType == QAudioFormat.SignedInt: self.settings.setSampleType(QAudioFormat.SignedInt) elif sampleType == QAudioFormat.UnSignedInt: self.settings.setSampleType(QAudioFormat.UnSignedInt) elif sampleType == QAudioFormat.Float: self.settings.setSampleType(QAudioFormat.Float) def endianChanged(self, idx): endian = int(self.endianBox.itemText(idx)) if endian == QAudioFormat.LittleEndian: self.settings.setByteOrder(QAudioFormat.LittleEndian) elif endian == QAudioFormat.BigEndian: self.settings.setByteOrder(QAudioFormat.BigEndian) if __name__ == '__main__': import sys app = QApplication(sys.argv) app.setApplicationName("Audio Device Test") audio = AudioTest() audio.show() sys.exit(app.exec_())