| 1 | // Copyright (C) 2024 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #ifndef QVIDEOTRANSFORMATION_P_H |
| 5 | #define QVIDEOTRANSFORMATION_P_H |
| 6 | |
| 7 | #include <qtvideo.h> |
| 8 | #include <optional> |
| 9 | |
| 10 | // |
| 11 | // W A R N I N G |
| 12 | // ------------- |
| 13 | // |
| 14 | // This file is not part of the Qt API. It exists purely as an |
| 15 | // implementation detail. This header file may change from version to |
| 16 | // version without notice, or even be removed. |
| 17 | // |
| 18 | // We mean it. |
| 19 | // |
| 20 | |
| 21 | QT_BEGIN_NAMESPACE |
| 22 | |
| 23 | struct VideoTransformation |
| 24 | { |
| 25 | QtVideo::Rotation rotation = QtVideo::Rotation::None; |
| 26 | bool mirrorredHorizontallyAfterRotation = false; |
| 27 | |
| 28 | void rotate(QtVideo::Rotation rotation) |
| 29 | { |
| 30 | if (rotation != QtVideo::Rotation::None) { |
| 31 | int angle = qToUnderlying(e: rotation); |
| 32 | if (mirrorredHorizontallyAfterRotation && angle % 180 != 0) |
| 33 | angle += 180; |
| 34 | |
| 35 | appendRotation(angle); |
| 36 | } |
| 37 | } |
| 38 | |
| 39 | void mirrorHorizontally(bool mirror = true) { mirrorredHorizontallyAfterRotation ^= mirror; } |
| 40 | |
| 41 | void mirrorVertically(bool mirror = true) |
| 42 | { |
| 43 | if (mirror) { |
| 44 | mirrorredHorizontallyAfterRotation ^= true; |
| 45 | appendRotation(angle: 180); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | int rotationIndex() const { return qToUnderlying(e: rotation) / 90; } |
| 50 | |
| 51 | private: |
| 52 | void appendRotation(quint32 angle) |
| 53 | { |
| 54 | rotation = QtVideo::Rotation((angle + qToUnderlying(e: rotation)) % 360); |
| 55 | } |
| 56 | }; |
| 57 | |
| 58 | using VideoTransformationOpt = std::optional<VideoTransformation>; |
| 59 | |
| 60 | inline bool operator==(const VideoTransformation &lhs, const VideoTransformation &rhs) |
| 61 | { |
| 62 | return lhs.rotation == rhs.rotation |
| 63 | && lhs.mirrorredHorizontallyAfterRotation == rhs.mirrorredHorizontallyAfterRotation; |
| 64 | } |
| 65 | |
| 66 | inline bool operator!=(const VideoTransformation &lhs, const VideoTransformation &rhs) |
| 67 | { |
| 68 | return !(lhs == rhs); |
| 69 | } |
| 70 | |
| 71 | Q_MULTIMEDIA_EXPORT QDebug operator<<(QDebug dbg, const VideoTransformation &transform); |
| 72 | |
| 73 | QT_END_NAMESPACE |
| 74 | |
| 75 | #endif // QVIDEOTRANSFORMATION_P_H |
| 76 |