qtexttospeech_flite_processor.h

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// Copyright (C) 2022 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QTEXTTOSPEECHPROCESSOR_FLITE_H

#define QTEXTTOSPEECHPROCESSOR_FLITE_H

#include "qtexttospeechengine.h"

#include "qvoice.h"

#include <QtCore/qabstracteventdispatcher.h>

#include <QtCore/qbasictimer.h>

#include <QtCore/qcoreevent.h>

#include <QtCore/qdatetime.h>

#include <QtCore/qlibrary.h>

#include <QtCore/qlist.h>

#include <QtCore/qmutex.h>

#include <QtCore/qprocess.h>

#include <QtCore/qstring.h>

#include <QtCore/qthread.h>

#include <QtMultimedia/qaudiosink.h>

#include <QtMultimedia/qmediadevices.h>

#include <flite/flite.h>

#include <optional>

QT_BEGIN_NAMESPACE

class QFliteSynthesisProcess;

class QTextToSpeechProcessorFlite : public QObject

    Q_OBJECT

public:

    QTextToSpeechProcessorFlite(QAudioDevice audioDevice);

    ~QTextToSpeechProcessorFlite();

    struct VoiceInfo

        int id;

        cst_voice *vox;

        void (*unregister_func)(cst_voice *vox);

        QString name;

        QString locale;

        QVoice::Gender gender;

        QVoice::Age age;

};

    Q_INVOKABLE void say(const QString &text, int voiceId, double pitch, double rate, double volume);

    Q_INVOKABLE void synthesize(const QString &text, int voiceId, double pitch, double rate, double volume);

    Q_INVOKABLE void pause(QTextToSpeech::BoundaryHint boundaryHint);

    Q_INVOKABLE void resume();

    Q_INVOKABLE void stop(QTextToSpeech::BoundaryHint boundaryHint);

    const QList<QTextToSpeechProcessorFlite::VoiceInfo> &voices() const;

private:

    bool init();

    bool checkVoice(int voiceId);

    void setError(QTextToSpeech::ErrorReason err, const QString &errorString = QString());

    void updateState(QTextToSpeech::State);

Q_SIGNALS:

    void errorOccurred(QTextToSpeech::ErrorReason error, const QString &errorString);

    void stateChanged(QTextToSpeech::State);

    void sayingWord(const QString &word, qsizetype begin, qsizetype length);

    void synthesized(const QAudioFormat &format, const QByteArray &array);

private:

    QTextToSpeech::State m_state = {};

    std::unique_ptr<QAudioSink> m_audioSink;

    const QAudioDevice m_audioDevice;

    float m_volume = 1.f;

    std::optional<QAudioFormat> m_synthesisFormat;

    QList<VoiceInfo> m_voices;

    // synthesis process

    friend class QFliteSynthesisProcess;

    std::unique_ptr<QFliteSynthesisProcess> m_synthesisProcess;

    void prepareAudioSink(QAudioFormat);

};

QT_END_NAMESPACE

#endif