Qt 文字转语音

╰半夏微凉° 2022-12-20 08:35 402阅读 0赞

> 1.QTextToSpeech

需要的类：QTextToSpeech

需要引入的模块：QT += texttospeech

> 2.运行效果

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d6ejk1MzIwMDQ2Mw_size_16_color_FFFFFF_t_70][]

>  3.源码

//mainWindow.h
    
    #ifndef MAINWINDOW_H
    #define MAINWINDOW_H
    
    #include <QtWidgets/qmainwindow.h>
    
    #include "ui_mainwindow.h"
    
    #include <QTextToSpeech>
    
    class MainWindow : public QMainWindow
    {
        Q_OBJECT
    public:
        MainWindow(QWidget *parent = 0);
    
    public slots:
        void speak();
        void stop();
    
        void setRate(int);
        void setPitch(int);
        void setVolume(int volume);
    
        void stateChanged(QTextToSpeech::State state);
        void engineSelected(int index);
        void languageSelected(int language);
        void voiceSelected(int index);
    
        void localeChanged(const QLocale &locale);
    
    private:
        Ui::MainWindow ui;
        QTextToSpeech *m_speech;
        QVector<QVoice> m_voices;
    };
    
    #endif

//mainWindow.cpp
    
    #include "mainwindow.h"
    #include <QLoggingCategory>
    
    MainWindow::MainWindow(QWidget *parent)
        : QMainWindow(parent),
        m_speech(0)
    {
        ui.setupUi(this);
        QLoggingCategory::setFilterRules(QStringLiteral("qt.speech.tts=true \n qt.speech.tts.*=true"));
    
        // Populate engine selection list
        ui.engine->addItem("Default", QString("default"));
        foreach (QString engine, QTextToSpeech::availableEngines())
            ui.engine->addItem(engine, engine);
        ui.engine->setCurrentIndex(0);
        engineSelected(0);
    
        connect(ui.speakButton, &QPushButton::clicked, this, &MainWindow::speak);
        connect(ui.pitch, &QSlider::valueChanged, this, &MainWindow::setPitch);
        connect(ui.rate, &QSlider::valueChanged, this, &MainWindow::setRate);
        connect(ui.volume, &QSlider::valueChanged, this, &MainWindow::setVolume);
        connect(ui.engine, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &MainWindow::engineSelected);
    }
    
    void MainWindow::speak()
    {
        m_speech->say(ui.plainTextEdit->toPlainText());
    }
    void MainWindow::stop()
    {
        m_speech->stop();
    }
    
    void MainWindow::setRate(int rate)
    {
        m_speech->setRate(rate / 10.0);
    }
    
    void MainWindow::setPitch(int pitch)
    {
        m_speech->setPitch(pitch / 10.0);
    }
    
    void MainWindow::setVolume(int volume)
    {
        m_speech->setVolume(volume / 100.0);
    }
    
    void MainWindow::stateChanged(QTextToSpeech::State state)
    {
        if (state == QTextToSpeech::Speaking) {
            ui.statusbar->showMessage("Speech started...");
        } else if (state == QTextToSpeech::Ready)
            ui.statusbar->showMessage("Speech stopped...", 2000);
        else if (state == QTextToSpeech::Paused)
            ui.statusbar->showMessage("Speech paused...");
        else
            ui.statusbar->showMessage("Speech error!");
    
        ui.pauseButton->setEnabled(state == QTextToSpeech::Speaking);
        ui.resumeButton->setEnabled(state == QTextToSpeech::Paused);
        ui.stopButton->setEnabled(state == QTextToSpeech::Speaking || state == QTextToSpeech::Paused);
    }
    
    void MainWindow::engineSelected(int index)
    {
        QString engineName = ui.engine->itemData(index).toString();
        delete m_speech;
        if (engineName == "default")
            m_speech = new QTextToSpeech(this);
        else
            m_speech = new QTextToSpeech(engineName, this);
        disconnect(ui.language, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &MainWindow::languageSelected);
        ui.language->clear();
        // Populate the languages combobox before connecting its signal.
        QVector<QLocale> locales = m_speech->availableLocales();
        QLocale current = m_speech->locale();
        foreach (const QLocale &locale, locales) {
            QString name(QString("%1 (%2)")
                         .arg(QLocale::languageToString(locale.language()))
                         .arg(QLocale::countryToString(locale.country())));
            QVariant localeVariant(locale);
            ui.language->addItem(name, localeVariant);
            if (locale.name() == current.name())
                current = locale;
        }
        setRate(ui.rate->value());
        setPitch(ui.pitch->value());
        setVolume(ui.volume->value());
        connect(ui.stopButton, &QPushButton::clicked, m_speech, &QTextToSpeech::stop);
        connect(ui.pauseButton, &QPushButton::clicked, m_speech, &QTextToSpeech::pause);
        connect(ui.resumeButton, &QPushButton::clicked, m_speech, &QTextToSpeech::resume);
    
        connect(m_speech, &QTextToSpeech::stateChanged, this, &MainWindow::stateChanged);
        connect(m_speech, &QTextToSpeech::localeChanged, this, &MainWindow::localeChanged);
    
        connect(ui.language, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &MainWindow::languageSelected);
        localeChanged(current);
    }
    
    void MainWindow::languageSelected(int language)
    {
        QLocale locale = ui.language->itemData(language).toLocale();
        m_speech->setLocale(locale);
    }
    
    void MainWindow::voiceSelected(int index)
    {
        m_speech->setVoice(m_voices.at(index));
    }
    
    void MainWindow::localeChanged(const QLocale &locale)
    {
        QVariant localeVariant(locale);
        ui.language->setCurrentIndex(ui.language->findData(localeVariant));
    
        disconnect(ui.voice, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &MainWindow::voiceSelected);
        ui.voice->clear();
    
        m_voices = m_speech->availableVoices();
        QVoice currentVoice = m_speech->voice();
        foreach (const QVoice &voice, m_voices) {
            ui.voice->addItem(QString("%1 - %2 - %3").arg(voice.name())
                              .arg(QVoice::genderName(voice.gender()))
                              .arg(QVoice::ageName(voice.age())));
            if (voice.name() == currentVoice.name())
                ui.voice->setCurrentIndex(ui.voice->count() - 1);
        }
        connect(ui.voice, static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this, &MainWindow::voiceSelected);
    }

> 4.源码下载地址

[https://download.csdn.net/download/wzz953200463/13104741][https_download.csdn.net_download_wzz953200463_13104741]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d6ejk1MzIwMDQ2Mw_size_16_color_FFFFFF_t_70]: /images/20221120/4ac6a5fa48d6493ca775f37e5592e2a9.png
[https_download.csdn.net_download_wzz953200463_13104741]: https://download.csdn.net/download/wzz953200463/13104741