qaaudiostream_p.h - mozsearch

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// Copyright (C) 2025 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 QAAUDIOSTREAM_P_H

#define QAAUDIOSTREAM_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 <QtMultimedia/qaudioformat.h>

#include <aaudio/AAudio.h>

QT_BEGIN_NAMESPACE

namespace QtAAudio {

Q_DECLARE_LOGGING_CATEGORY(qLcAAudioStream)

struct StreamBuilder;

struct Stream

    explicit Stream(StreamBuilder &builder);

    ~Stream();

    Q_DISABLE_COPY_MOVE(Stream)

    bool start();

    void stop();

    void pause();

    void flush();

    bool isOpen() const;

    bool areStreamParametersRespected() const;

private:

    void close();

    aaudio_result_t waitForTargetState(aaudio_stream_state_t targetState);

    template <typename Functor>

    aaudio_result_t requestWithExpectedState(Functor &&request, aaudio_stream_state_t expected);

    // stream members

    AAudioStream *m_stream{ nullptr };

    bool m_areStreamParametersRespected{ false };

};

struct StreamParameterSet

    aaudio_sharing_mode_t sharingMode = AAUDIO_SHARING_MODE_SHARED;

    aaudio_direction_t direction = AAUDIO_DIRECTION_OUTPUT;

    aaudio_usage_t outputUsage = AAUDIO_USAGE_MEDIA;

    aaudio_content_type_t outputContentType = AAUDIO_CONTENT_TYPE_MUSIC;

    aaudio_input_preset_t inputPreset = AAUDIO_INPUT_PRESET_VOICE_RECOGNITION;

    aaudio_performance_mode_t performanceMode = AAUDIO_PERFORMANCE_MODE_NONE;

};

struct StreamBuilder

    friend Stream;

    StreamBuilder(QAudioFormat format);

    ~StreamBuilder();

    Q_DISABLE_COPY_MOVE(StreamBuilder)

    QAudioFormat format;

    AAudioStream_dataCallback callback;

    AAudioStream_errorCallback errorCallback;

    void *userData{ nullptr };

    StreamParameterSet params;

    int32_t deviceId{ AAUDIO_UNSPECIFIED };

    int32_t bufferCapacity{ AAUDIO_UNSPECIFIED };

    void setupBuilder();

private:

    AAudioStreamBuilder *m_builder{ nullptr };

};

} // namespace QtAAudio

QT_END_NAMESPACE

#endif