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// Copyright (C) 2022 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 QFFMPEGVIDEOENCODERUTILS_P_H
#define QFFMPEGVIDEOENCODERUTILS_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 "qffmpeg_p.h"
#include "qffmpeghwaccel_p.h"
QT_BEGIN_NAMESPACE
namespace QFFmpeg {
AVPixelFormat findTargetSWFormat(AVPixelFormat sourceSWFormat, const AVCodec *codec,
const HWAccel &accel);
AVPixelFormat findTargetFormat(AVPixelFormat sourceFormat, AVPixelFormat sourceSWFormat,
const AVCodec *codec, const HWAccel *accel);
std::pair<const AVCodec *, std::unique_ptr<HWAccel>> findHwEncoder(AVCodecID codecID,
const QSize &sourceSize);
const AVCodec *findSwEncoder(AVCodecID codecID, AVPixelFormat sourceSWFormat);
/**
* @brief adjustFrameRate get a rational frame rate be requested qreal rate.
* If the codec supports fixed frame rate (non-null supportedRates),
* the function selects the most suitable one,
* otherwise just makes AVRational from qreal.
*/
AVRational adjustFrameRate(const AVRational *supportedRates, qreal requestedRate);
/**
* @brief adjustFrameTimeBase gets adjusted timebase by a list of supported frame rates
* and an already adjusted frame rate.
*
* Timebase is the fundamental unit of time (in seconds) in terms
* of which frame timestamps are represented.
* For fixed-fps content (non-null supportedRates),
* timebase should be 1/framerate.
*
* For more information, see AVStream::time_base and AVCodecContext::time_base.
*
* The adjusted time base is supposed to be set to stream and codec context.
*/
AVRational adjustFrameTimeBase(const AVRational *supportedRates, AVRational frameRate);
QSize adjustVideoResolution(const AVCodec *codec, QSize requestedResolution);
} // namespace QFFmpeg
QT_END_NAMESPACE
#endif // QFFMPEGVIDEOENCODERUTILS_P_H
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