Qt中接收麦克风数据并保存为WAV文件

/**************************************************************************** ** ** Copyright (C) 2017 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the examples of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:BSD$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** BSD License Usage ** Alternatively, 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 The Qt Company Ltd 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." ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "audiorecorder.h" #include "ui_audiorecorder.h" #include <QAudioProbe> #include <QAudioRecorder> #include <QDir> #include <QFileDialog> #include <QMediaRecorder> #include <QStandardPaths> AudioRecorder::AudioRecorder() : ui(new Ui::AudioRecorder) { ui->setupUi(this); m_audioRecorder = new QAudioRecorder(this); m_probe = new QAudioProbe(this); m_probe->setSource(m_audioRecorder); /////////// //audio devices ui->audioDeviceBox->addItem(tr("Default"), QVariant(QString())); for (auto &device: m_audioRecorder->audioInputs()) { ui->audioDeviceBox->addItem(device, QVariant(device)); qDebug()<<"device:"<<device; } /////////////// QAudioEncoderSettings settings; settings.setCodec(""); settings.setSampleRate(44100); settings.setChannelCount(1); //单通道 settings.setQuality(QMultimedia::NormalQuality); m_audioRecorder->setEncodingSettings(settings, QVideoEncoderSettings(), "audio/x-wav"); connect(m_audioRecorder, &QAudioRecorder::durationChanged, this, &AudioRecorder::updateProgress); } void AudioRecorder::on_outputButton_clicked() { QString fileName = QFileDialog::getSaveFileName(); m_audioRecorder->setOutputLocation(QUrl::fromLocalFile(fileName)); } void AudioRecorder::on_recordButton_clicked() { if(ui->recordButton->text() == "Record") { m_audioRecorder->record(); ui->recordButton->setText("Pause"); } else if(ui->recordButton->text() == "Pause") { m_audioRecorder->stop(); ui->recordButton->setText("Record"); } } void AudioRecorder::updateProgress(qint64 duration) { if (m_audioRecorder->error() != QMediaRecorder::NoError || duration < 1000) return; ui->statusbar->showMessage(tr("Recorded %1 sec").arg(duration / 1000)); }