qwavedecoder.h - mozsearch

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// Copyright (C) 2016 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:critical reason:data-parser

#ifndef WAVEDECODER_H

#define WAVEDECODER_H

#include <QtMultimedia/qaudioformat.h>

#include <QtCore/qiodevice.h>

#include <QtCore/qbytearray.h>

#include <memory>

QT_BEGIN_NAMESPACE

#if QT_DEPRECATED_SINCE(6, 11)

class Q_MULTIMEDIA_EXPORT QWaveDecoder : public QIODevice

    Q_OBJECT

public:

    QT_DEPRECATED_VERSION_X_6_11("QWaveDecoder is deprecated. Please use QAudioDecoder instead.")

    explicit QWaveDecoder(QIODevice *device, QObject *parent = nullptr);

    QT_DEPRECATED_VERSION_X_6_11("QWaveDecoder is deprecated. Please use QAudioDecoder instead.")

    explicit QWaveDecoder(QIODevice *device, const QAudioFormat &format, QObject *parent = nullptr);

    ~QWaveDecoder() override;

    QAudioFormat audioFormat() const;

    QIODevice *getDevice();

    int duration() const;

    static qint64 headerLength();

    bool open(QIODevice::OpenMode mode) override;

    void close() override;

    bool seek(qint64 pos) override;

    qint64 pos() const override;

    void setIODevice(QIODevice *device);

    qint64 size() const override;

    bool isSequential() const override;

    qint64 bytesAvailable() const override;

Q_SIGNALS:

    void formatKnown();

    void parsingError();

private Q_SLOTS:

    void handleData();

private:

    qint64 readData(char *data, qint64 maxlen) override;

    qint64 writeData(const char *data, qint64 len) override;

    bool writeHeader();

    bool writeDataLength();

    void parsingFailed();

    struct chunk

        char id[4];

        quint32 size;

};

    struct RIFFHeader

        chunk descriptor;

        char type[4];

};

    struct WAVEHeader

        chunk descriptor;

        quint16 audioFormat;

        quint16 numChannels;

        quint32 sampleRate;

        quint32 byteRate;

        quint16 blockAlign;

        quint16 bitsPerSample;

};

    struct DATAHeader

        chunk descriptor;

};

    struct CombinedHeader

        RIFFHeader riff;

        WAVEHeader wave;

        DATAHeader data;

};

    static const int HeaderLength = sizeof(CombinedHeader);

    bool haveFormat = false;

    bool haveHeader = false;

    qint64 dataSize = 0;

    QIODevice *device = nullptr;

    QAudioFormat format;

    std::unique_ptr<QByteArray> m_headerBuf; // accumulates bytes for dr_wav parsing

    bool m_byteSwap = false; // true when WAV endian != host endian

#  if QT_POINTER_SIZE == 4

    Q_DECL_UNUSED_MEMBER char m_abiPadding[8];

#  endif

};

#endif // QT_DEPRECATED_SINCE(6, 11)

QT_END_NAMESPACE

#endif // WAVEDECODER_H