qohosaudiosource_p.h

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// Copyright (C) 2026 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

#ifndef QOHOSAUDIOSOURCE_P_H

#define QOHOSAUDIOSOURCE_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API. It exists purely as an

// implementation detail. This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <private/qaudio_platform_implementation_support_p.h>

#include "qohaudiostream_p.h"

#include <memory>

QT_BEGIN_NAMESPACE

namespace QtOHAudio {

class QOhosAudioSource;

class QOhosAudioSourceStream final : public QtMultimediaPrivate::QPlatformAudioSourceStream

    using QPlatformAudioSourceStream = QtMultimediaPrivate::QPlatformAudioSourceStream;

public:

    explicit QOhosAudioSourceStream(QAudioDevice device, const QAudioFormat &format,

                                    std::optional<int> ringbufferSize,

                                    QOhosAudioSource *parent, float volume,

                                    std::optional<QtMultimediaPrivate::NativePeriodFrames> hardwareBufferFrames);

    Q_DISABLE_COPY_MOVE(QOhosAudioSourceStream)

    ~QOhosAudioSourceStream() = default;

    bool open();

    bool start(QIODevice *);

    QIODevice *start();

    bool start(AudioCallback &&);

    void suspend();

    void resume();

    void stop(ShutdownPolicy);

    using QPlatformAudioSourceStream::bytesReady;

    using QPlatformAudioSourceStream::deviceIsRingbufferReader;

    using QPlatformAudioSourceStream::processedDuration;

    using QPlatformAudioSourceStream::ringbufferSizeInBytes;

    using QPlatformAudioSourceStream::setVolume;

private:

    void updateStreamIdle(bool idle) override;

    QSpan<const std::byte> getHostSpan(void *audioData,

                                       int32_t numBytes) const noexcept Q_DECL_NONBLOCKING_FUNCTION;

    int32_t processRingbuffer(QSpan<const std::byte> audioSpan,

                              int32_t numBytes) noexcept Q_DECL_NONBLOCKING_FUNCTION;

    int32_t processCallback(QSpan<const std::byte> audioSpan) noexcept Q_DECL_NONBLOCKING_FUNCTION;

    QOhosAudioSource *m_parent;

    std::optional<AudioCallback> m_audioCallback;

    std::unique_ptr<QtOHAudio::Stream> m_stream;

    std::optional<QAudioFormat> m_hostFormat;

};

class QOhosAudioSource final

    : public QtMultimediaPrivate::QPlatformAudioSourceImplementationWithCallback<

              QOhosAudioSourceStream, QOhosAudioSource>

    using BaseClass = QtMultimediaPrivate::QPlatformAudioSourceImplementationWithCallback<

            QOhosAudioSourceStream, QOhosAudioSource>;

public:

    QOhosAudioSource(QAudioDevice device, const QAudioFormat &format, QObject *parent);

    ~QOhosAudioSource() override;

};

} // namespace QtOHAudio

QT_END_NAMESPACE

#endif // QOHOSAUDIOSOURCE_P_H