qandroidaudiosink_p.h

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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

#ifndef QANDROIDAUDIOOUTPUT_H

#define QANDROIDAUDIOOUTPUT_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 "qaaudiostream_p.h"

#include <memory>

QT_BEGIN_NAMESPACE

namespace QtAAudio {

class QAndroidAudioSink;

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

                                      public QtMultimediaPrivate::QPlatformAudioSinkStream

    using QPlatformAudioSinkStream = QtMultimediaPrivate::QPlatformAudioSinkStream;

    using AudioEndpointRole = QtMultimediaPrivate::AudioEndpointRole;

    using NativePeriodFrames = QtMultimediaPrivate::NativePeriodFrames;

public:

    explicit QAndroidAudioSinkStream(QAudioDevice, const QAudioFormat &,

                                     std::optional<qsizetype> ringbufferSize,

                                     QAndroidAudioSink *parent, float volume,

                                     std::optional<NativePeriodFrames> nativePeriodFrames,

                                     AudioEndpointRole);

    Q_DISABLE_COPY_MOVE(QAndroidAudioSinkStream)

    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();

    // QPlatformAudioSinkStream overrides

    void updateStreamIdle(bool arg) override;

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

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

                                                    int numFrames) noexcept Q_DECL_NONBLOCKING_FUNCTION;

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

    void handleError(aaudio_result_t error);

    QAndroidAudioSink *m_parent{ nullptr };

    std::shared_ptr<QAndroidAudioSinkStream> m_self;

    std::optional<AudioCallback> m_audioCallback;

    AudioEndpointRole m_role;

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

    std::optional<QAudioFormat> m_hostFormat;

};

class QAndroidAudioSink final

    : public QtMultimediaPrivate::QPlatformAudioSinkImplementation<QAndroidAudioSinkStream,

                                                                   QAndroidAudioSink>

    using BaseClass = QtMultimediaPrivate::QPlatformAudioSinkImplementation<QAndroidAudioSinkStream,

                                                                            QAndroidAudioSink>;

public:

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

    ~QAndroidAudioSink() override;

};

QT_END_NAMESPACE

#endif // QANDROIDAUDIOOUTPUT_H