Qt 录音程序

野性酷女 2022-09-22 11:44 197阅读 0赞

mainwindow.cpp
     
    #include "mainwindow.h"
    #include "ui_mainwindow.h"
     
    MainWindow::MainWindow(QWidget *parent) :
        QMainWindow(parent),
        ui(new Ui::MainWindow)
    {
        ui->setupUi(this);
    }
     
    MainWindow::~MainWindow()
    {
        delete ui;
    }
    //开始录音
    void MainWindow::on_start_clicked()
    {
        file =new QFile();
        file->setFileName("E:\\nihao");//设置其实设置音频文件的存放路径(输入音频名及存放路径)
        bool is_open =file->open(QIODevice::WriteOnly | QIODevice::Truncate);
        if(!is_open)
        {
            qDebug()<<"打开失败失败"<<endl;
            exit(1);
        }
     
        QAudioFormat format;
        format.setSampleRate(8000);
        format.setChannelCount(1);
        format.setSampleSize(8);
        format.setCodec("audio/wav");
        format.setByteOrder(QAudioFormat::LittleEndian);
        format.setSampleType(QAudioFormat::UnSignedInt);
     
        QAudioDeviceInfo info = QAudioDeviceInfo::defaultInputDevice();
        QString str=info.deviceName();
        qDebug()<<"使用的录音设备是:"<<str<<endl;
        if(!info.isFormatSupported(format))
        {
            format = info.nearestFormat(format);
        }
        input = new QAudioInput(format, this);
        ui->label->setText("录音开始......");
        input->start(file);
     
    }
     
    //停止录音
    void MainWindow::on_finish_clicked()
    {
        input->stop();
        file->close();
        ui->label->setText("录音结束......");
    }
    //播放录音
    void MainWindow::on_play_clicked()
    {
         file->setFileName("E:\\test.wav");
         file->open(QIODevice::ReadOnly);
     
         QAudioFormat format;
         format.setSampleRate(8000);
         format.setChannelCount(1);
         format.setSampleSize(8);
         format.setCodec("audio/wav");
         format.setByteOrder(QAudioFormat::LittleEndian);
         format.setSampleType(QAudioFormat::UnSignedInt);
     
         output = new QAudioOutput(format);
         output->start(file);
    }
     
    mainwindow.h
     
    #ifndef MAINWINDOW_H
    #define MAINWINDOW_H
     
    #include <QMainWindow>
    #include <QMultimedia>
    #include <QFile>
    #include <QDebug>
    #include <QAudioFormat>
    #include <QAudioDeviceInfo>
    #include <QAudioInput>
    #include <QTimer>
    #include <QAudioOutput>
    namespace Ui {
    class MainWindow;
    }
     
    class MainWindow : public QMainWindow
    {
        Q_OBJECT
     
    public:
        explicit MainWindow(QWidget *parent = 0);
        ~MainWindow();
     
    private slots:
        void on_start_clicked();
     
        void on_finish_clicked();
     
        void on_play_clicked();
     
    private:
        Ui::MainWindow *ui;
        QFile *file;
        QAudioInput * input;
        QAudioOutput* output;
    };
     
    #endif // MAINWINDOW_H