qffmpegcodeccontext_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 QFFMPEGCODECCONTEXT_P_H

#define QFFMPEGCODECCONTEXT_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 <QtFFmpegMediaPluginImpl/private/qffmpeg_p.h>

#include <QtFFmpegMediaPluginImpl/private/qffmpeghwaccel_p.h>

#include <QtFFmpegMediaPluginImpl/private/qffmpegtime_p.h>

#include <QtCore/qshareddata.h>

#include <QtCore/private/qexpected_p.h>

QT_BEGIN_NAMESPACE

class QPlaybackOptions;

namespace QFFmpeg {

class CodecContext

    struct Data : QSharedData

        Data(AVCodecContextUPtr context, AVStream *avStream, AVFormatContext *formatContext,

             std::unique_ptr<QFFmpeg::HWAccel> hwAccel);

        AVCodecContextUPtr context;

        AVStream *stream = nullptr;

        AVFormatContext *formatContext = nullptr;

        AVRational pixelAspectRatio = { 0, 1 };

        std::unique_ptr<QFFmpeg::HWAccel> hwAccel;

};

public:

    static q23::expected<CodecContext, QString> create(AVStream *stream, AVFormatContext *formatContext,

                                       const QPlaybackOptions &options);

    AVRational pixelAspectRatio(AVFrame *frame) const;

    AVCodecContext *context() const { return d->context.get(); }

    AVStream *stream() const { return d->stream; }

    uint streamIndex() const { return d->stream->index; }

    HWAccel *hwAccel() const { return d->hwAccel.get(); }

    TrackDuration toTrackDuration(AVStreamDuration duration) const

        return QFFmpeg::toTrackDuration(duration, d->stream);

    TrackPosition toTrackPosition(AVStreamPosition streamPosition) const

        return QFFmpeg::toTrackPosition(streamPosition, d->stream, d->formatContext);

private:

    enum VideoCodecCreationPolicy {

Hw,

Sw,

};

    static q23::expected<CodecContext, QString> create(AVStream *stream, AVFormatContext *formatContext,

                                       const QPlaybackOptions &playbackOptions,

                                       VideoCodecCreationPolicy videoCodecPolicy);

    CodecContext(Data *data) : d(data) { }

    QExplicitlySharedDataPointer<Data> d;

};

} // namespace QFFmpeg

QT_END_NAMESPACE

#endif // QFFMPEGCODECCONTEXT_P_H