| 1 | // Copyright (C) 2022 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | #ifndef QFFMPEGVIDEOENCODERUTILS_P_H |
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| 4 | #define QFFMPEGVIDEOENCODERUTILS_P_H |
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| 5 | |
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| 6 | // |
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| 7 | // W A R N I N G |
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| 8 | // ------------- |
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| 9 | // |
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| 10 | // This file is not part of the Qt API. It exists purely as an |
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| 11 | // implementation detail. This header file may change from version to |
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| 12 | // version without notice, or even be removed. |
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| 13 | // |
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| 14 | // We mean it. |
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| 15 | // |
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| 16 | |
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| 17 | #include <QtFFmpegMediaPluginImpl/private/qffmpegdefs_p.h> |
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| 18 | #include <QtFFmpegMediaPluginImpl/private/qffmpeghwaccel_p.h> |
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| 19 | |
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| 20 | #include <QtCore/qspan.h> |
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| 21 | |
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| 22 | QT_BEGIN_NAMESPACE |
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| 23 | |
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| 24 | namespace QFFmpeg { |
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| 25 | |
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| 26 | std::optional<AVPixelFormat> findTargetSWFormat(AVPixelFormat sourceSWFormat, const Codec &codec, |
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| 27 | const HWAccel &accel, |
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| 28 | const AVPixelFormatSet &prohibitedFormats = {}); |
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| 29 | |
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| 30 | std::optional<AVPixelFormat> findTargetFormat(AVPixelFormat sourceFormat, |
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| 31 | AVPixelFormat sourceSWFormat, const Codec &codec, |
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| 32 | const HWAccel *accel, |
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| 33 | const AVPixelFormatSet &prohibitedFormats = {}); |
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| 34 | |
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| 35 | AVScore findSWFormatScores(const Codec &codec, AVPixelFormat sourceSWFormat); |
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| 36 | |
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| 37 | /** |
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| 38 | * @brief adjustFrameRate get a rational frame rate be requested qreal rate. |
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| 39 | * If the codec supports fixed frame rate (non-null supportedRates), |
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| 40 | * the function selects the most suitable one, |
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| 41 | * otherwise just makes AVRational from qreal. |
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| 42 | */ |
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| 43 | AVRational adjustFrameRate(QSpan<const AVRational> supportedRates, qreal requestedRate); |
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| 44 | |
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| 45 | /** |
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| 46 | * @brief adjustFrameTimeBase gets adjusted timebase by a list of supported frame rates |
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| 47 | * and an already adjusted frame rate. |
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| 48 | * |
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| 49 | * Timebase is the fundamental unit of time (in seconds) in terms |
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| 50 | * of which frame timestamps are represented. |
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| 51 | * For fixed-fps content (non-null supportedRates), |
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| 52 | * timebase should be 1/framerate. |
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| 53 | * |
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| 54 | * For more information, see AVStream::time_base and AVCodecContext::time_base. |
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| 55 | * |
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| 56 | * The adjusted time base is supposed to be set to stream and codec context. |
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| 57 | */ |
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| 58 | AVRational adjustFrameTimeBase(QSpan<const AVRational> supportedRates, AVRational frameRate); |
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| 59 | |
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| 60 | QSize adjustVideoResolution(const Codec &codec, QSize requestedResolution); |
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| 61 | |
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| 62 | int getScaleConversionType(const QSize &sourceSize, const QSize &targetSize); |
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| 63 | |
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| 64 | } // namespace QFFmpeg |
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| 65 | |
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| 66 | QT_END_NAMESPACE |
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| 67 | |
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| 68 | #endif // QFFMPEGVIDEOENCODERUTILS_P_H |
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| 69 | |
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