| 1 | // Copyright (C) 2021 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 | |
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| 4 | #ifndef QMULTIMEDIAUTILS_P_H |
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| 5 | #define QMULTIMEDIAUTILS_P_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is not part of the Qt API. It exists purely as an |
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| 12 | // implementation detail. This header file may change from version to |
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| 13 | // version without notice, or even be removed. |
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| 14 | // |
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| 15 | // We mean it. |
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| 16 | // |
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| 17 | |
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| 18 | #include <QtMultimedia/qtmultimediaglobal.h> |
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| 19 | #include <QtMultimedia/private/qmaybe_p.h> |
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| 20 | #include <QtMultimedia/private/qvideotransformation_p.h> |
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| 21 | #include <QtCore/qsize.h> |
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| 22 | #include <QtCore/qurl.h> |
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| 23 | #include <QtGui/rhi/qrhi.h> |
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| 24 | |
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| 25 | QT_BEGIN_NAMESPACE |
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| 26 | |
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| 27 | class QRhiSwapChain; |
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| 28 | class QVideoFrame; |
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| 29 | class QVideoFrameFormat; |
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| 30 | |
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| 31 | struct Fraction { |
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| 32 | int numerator; |
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| 33 | int denominator; |
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| 34 | }; |
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| 35 | |
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| 36 | Q_MULTIMEDIA_EXPORT Fraction qRealToFraction(qreal value); |
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| 37 | |
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| 38 | Q_MULTIMEDIA_EXPORT QSize qCalculateFrameSize(QSize resolution, Fraction pixelAspectRatio); |
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| 39 | |
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| 40 | // TODO: after adding pixel aspect ratio to QVideoFrameFormat, the function should |
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| 41 | // consider PAR as well as rotation |
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| 42 | Q_MULTIMEDIA_EXPORT QSize qRotatedFrameSize(QSize size, int rotation); |
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| 43 | |
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| 44 | inline QSize qRotatedFrameSize(QSize size, QtVideo::Rotation rotation) |
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| 45 | { |
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| 46 | return qRotatedFrameSize(size, rotation: qToUnderlying(e: rotation)); |
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| 47 | } |
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| 48 | |
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| 49 | Q_MULTIMEDIA_EXPORT QSize qRotatedFramePresentationSize(const QVideoFrame &frame); |
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| 50 | |
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| 51 | Q_MULTIMEDIA_EXPORT QUrl qMediaFromUserInput(QUrl fileName); |
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| 52 | |
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| 53 | Q_MULTIMEDIA_EXPORT bool qIsAutoHdrEnabled(); |
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| 54 | |
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| 55 | Q_MULTIMEDIA_EXPORT QRhiSwapChain::Format |
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| 56 | qGetRequiredSwapChainFormat(const QVideoFrameFormat &format); |
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| 57 | |
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| 58 | Q_MULTIMEDIA_EXPORT bool |
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| 59 | qShouldUpdateSwapChainFormat(QRhiSwapChain *swapChain, |
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| 60 | QRhiSwapChain::Format requiredSwapChainFormat); |
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| 61 | |
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| 62 | Q_MULTIMEDIA_EXPORT VideoTransformation |
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| 63 | qNormalizedSurfaceTransformation(const QVideoFrameFormat &format); |
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| 64 | |
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| 65 | Q_MULTIMEDIA_EXPORT VideoTransformation qNormalizedFrameTransformation(const QVideoFrame &frame, |
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| 66 | int additionalRotaton = 0); |
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| 67 | |
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| 68 | Q_MULTIMEDIA_EXPORT QtVideo::Rotation |
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| 69 | qVideoRotationFromDegrees(int clockwiseDegrees); |
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| 70 | |
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| 71 | /* The function get mirroring and rotation from the specified QTransform. |
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| 72 | * |
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| 73 | * Matrix translation is not taken into consideration. |
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| 74 | * Matrix negative scaling is interpreted as mirroring. |
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| 75 | * Absolute X and Y scale values are not taken into consideration as |
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| 76 | * QVideoFrame and QVideoFrameFormat don't support scaling transformations. |
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| 77 | * |
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| 78 | * Sheared matrixes are not supported, |
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| 79 | * as shearing can make the transformation ambiguous |
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| 80 | * (the same matrix can be reached by different angle,scaleX,scaleY,shearV,shearH). |
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| 81 | * |
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| 82 | * If the given matrix is invalid, or the scale sign is ambiguous, |
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| 83 | * the function returns an empty optional value. |
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| 84 | */ |
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| 85 | Q_MULTIMEDIA_EXPORT VideoTransformationOpt qVideoTransformationFromMatrix(const QTransform &matrix); |
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| 86 | |
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| 87 | QT_END_NAMESPACE |
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| 88 | |
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| 89 | #endif // QMULTIMEDIAUTILS_P_H |
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| 90 | |
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| 91 | |
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