qandroidaudiosource_p.h

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// Copyright (C) 2021 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 QANDROIDAUDIOINPUT_H

#define QANDROIDAUDIOINPUT_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 <private/qaaudiostream_p.h>

#include <aaudio/AAudio.h>

QT_BEGIN_NAMESPACE

namespace QtAAudio {

class QAndroidAudioSource;

class QAndroidAudioSourceStream final : public QtMultimediaPrivate::QPlatformAudioSourceStream

    using QPlatformAudiosourceStream = QtMultimediaPrivate::QPlatformAudioSourceStream;

    using NativePeriodFrames = QtMultimediaPrivate::NativePeriodFrames;

public:

    explicit QAndroidAudioSourceStream(QAudioDevice device, const QAudioFormat &format,

                                       std::optional<int> ringbufferSize,

                                       QAndroidAudioSource *parent, float volume,

                                       std::optional<NativePeriodFrames> nativePeriodFrames);

    Q_DISABLE_COPY_MOVE(QAndroidAudioSourceStream)

    ~QAndroidAudioSourceStream();

    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:

    // QPlatformAudioSourceStream overrides

    void updateStreamIdle(bool idle) override;

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

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

                                                    int numFrames) noexcept Q_DECL_NONBLOCKING_FUNCTION;

    aaudio_data_callback_result_t

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

    void handleError(aaudio_result_t error);

    QAndroidAudioSource *m_parent;

    std::optional<AudioCallback> m_audioCallback;

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

    std::optional<QAudioFormat> m_hostFormat;

};

class QAndroidAudioSource final

    : public QtMultimediaPrivate::QPlatformAudioSourceImplementationWithCallback<

              QAndroidAudioSourceStream, QAndroidAudioSource>

    using BaseClass = QtMultimediaPrivate::QPlatformAudioSourceImplementationWithCallback<

            QAndroidAudioSourceStream, QAndroidAudioSource>;

public:

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

    ~QAndroidAudioSource() override;

};

QT_END_NAMESPACE

#endif // QANDROIDAUDIOINPUT_H