| 1 | // Copyright (C) 2024 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
| 3 | |
| 4 | #ifndef TESTVIDEOSINK_H |
| 5 | #define TESTVIDEOSINK_H |
| 6 | |
| 7 | // |
| 8 | // W A R N I N G |
| 9 | // ------------- |
| 10 | // |
| 11 | // This file is not part of the Qt API. It exists purely as an |
| 12 | // implementation detail. This header file may change from version to |
| 13 | // version without notice, or even be removed. |
| 14 | // |
| 15 | // We mean it. |
| 16 | // |
| 17 | |
| 18 | #include <qvideosink.h> |
| 19 | #include <qvideoframe.h> |
| 20 | #include <qelapsedtimer.h> |
| 21 | #include <qsignalspy.h> |
| 22 | #include <chrono> |
| 23 | |
| 24 | QT_BEGIN_NAMESPACE |
| 25 | |
| 26 | /* |
| 27 | This is a simple video surface which records all presented frames. |
| 28 | */ |
| 29 | class TestVideoSink : public QVideoSink |
| 30 | { |
| 31 | Q_OBJECT |
| 32 | public: |
| 33 | explicit TestVideoSink(bool storeFrames = false) : m_storeFrames(storeFrames) |
| 34 | { |
| 35 | connect(sender: this, signal: &QVideoSink::videoFrameChanged, context: this, slot: &TestVideoSink::addVideoFrame); |
| 36 | connect(sender: this, signal: &QVideoSink::videoFrameChanged, context: this, slot: &TestVideoSink::videoFrameChangedSync); |
| 37 | } |
| 38 | |
| 39 | QVideoFrame waitForFrame() |
| 40 | { |
| 41 | QSignalSpy spy(this, &TestVideoSink::videoFrameChangedSync); |
| 42 | return spy.wait() ? spy.at(i: 0).at(i: 0).value<QVideoFrame>() : QVideoFrame{}; |
| 43 | } |
| 44 | |
| 45 | void setStoreFrames(bool storeFrames = true) { m_storeFrames = storeFrames; } |
| 46 | |
| 47 | private Q_SLOTS: |
| 48 | void addVideoFrame(const QVideoFrame &frame) |
| 49 | { |
| 50 | if (!m_elapsedTimer.isValid()) |
| 51 | m_elapsedTimer.start(); |
| 52 | else |
| 53 | m_elapsedTimer.restart(); |
| 54 | |
| 55 | if (m_storeFrames) |
| 56 | m_frameList.append(t: frame); |
| 57 | |
| 58 | if (frame.isValid()) |
| 59 | m_frameTimes.emplace_back(args: std::chrono::microseconds(frame.startTime())); |
| 60 | |
| 61 | ++m_totalFrames; |
| 62 | } |
| 63 | |
| 64 | signals: |
| 65 | void videoFrameChangedSync(const QVideoFrame &frame); |
| 66 | |
| 67 | public: |
| 68 | QList<QVideoFrame> m_frameList; |
| 69 | int m_totalFrames = 0; // used instead of the list when frames are not stored |
| 70 | QElapsedTimer m_elapsedTimer; |
| 71 | using TimePoint = std::chrono::time_point<std::chrono::high_resolution_clock>; |
| 72 | std::vector<TimePoint> m_frameTimes; |
| 73 | |
| 74 | private: |
| 75 | bool m_storeFrames; |
| 76 | }; |
| 77 | |
| 78 | QT_END_NAMESPACE |
| 79 | |
| 80 | #endif // TESTVIDEOSINK_H |
| 81 |