qohosaudiosink_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 QOHOSAUDIOSINK_P_H

#define QOHOSAUDIOSINK_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 QOhosAudioSink;

class QOhosAudioSinkStream final : public std::enable_shared_from_this<QOhosAudioSinkStream>,

                                   public QtMultimediaPrivate::QPlatformAudioSinkStream

    using QPlatformAudioSinkStream = QtMultimediaPrivate::QPlatformAudioSinkStream;

    using AudioEndpointRole = QtMultimediaPrivate::AudioEndpointRole;

public:

    explicit QOhosAudioSinkStream(QAudioDevice device, const QAudioFormat &format,

                                  std::optional<qsizetype> ringbufferSize,

                                  QOhosAudioSink *parent, float volume,

                                  std::optional<QtMultimediaPrivate::NativePeriodFrames> hardwareBufferFrames,

                                  AudioEndpointRole role);

    Q_DISABLE_COPY_MOVE(QOhosAudioSinkStream)

    bool open();

    bool start(QIODevice *device);

    QIODevice *start();

    bool start(AudioCallback cb);

    void suspend();

    void resume();

    void stop(ShutdownPolicy policy);

    using QPlatformAudioSinkStream::bytesFree;

    using QPlatformAudioSinkStream::processedDuration;

    using QPlatformAudioSinkStream::ringbufferSizeInBytes;

    using QPlatformAudioSinkStream::setVolume;

private:

    void stop();

    void reset();

    void updateStreamIdle(bool arg) override;

    QSpan<std::byte> getHostSpan(void *audioData, int32_t numBytes) const noexcept Q_DECL_NONBLOCKING_FUNCTION;

    OH_AudioData_Callback_Result processRingbuffer(QSpan<std::byte> audioSpan,

                                                   int32_t numBytes) noexcept Q_DECL_NONBLOCKING_FUNCTION;

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

    QOhosAudioSink *m_parent{ nullptr };

    std::shared_ptr<QOhosAudioSinkStream> m_self;

    std::optional<AudioCallback> m_audioCallback;

    AudioEndpointRole m_role;

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

    std::optional<QAudioFormat> m_hostFormat;

};

class QOhosAudioSink final

    : public QtMultimediaPrivate::QPlatformAudioSinkImplementation<QOhosAudioSinkStream,

                                                                   QOhosAudioSink>

    using BaseClass = QtMultimediaPrivate::QPlatformAudioSinkImplementation<QOhosAudioSinkStream,

                                                                            QOhosAudioSink>;

public:

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

    ~QOhosAudioSink() override;

};

} // namespace QtOHAudio

QT_END_NAMESPACE

#endif // QOHOSAUDIOSINK_P_H