| 1 | // Copyright (C) 2024 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
| 3 | |
| 4 | #include "framegenerator_p.h" |
| 5 | #include <QtCore/qdebug.h> |
| 6 | |
| 7 | #include <private/qplatformmediaintegration_p.h> |
| 8 | |
| 9 | QT_BEGIN_NAMESPACE |
| 10 | |
| 11 | void VideoGenerator::setPattern(ImagePattern pattern) |
| 12 | { |
| 13 | m_pattern = pattern; |
| 14 | } |
| 15 | |
| 16 | void VideoGenerator::setFrameCount(int count) |
| 17 | { |
| 18 | m_maxFrameCount = count; |
| 19 | } |
| 20 | |
| 21 | void VideoGenerator::setSize(QSize size) |
| 22 | { |
| 23 | m_size = size; |
| 24 | } |
| 25 | |
| 26 | void VideoGenerator::setPixelFormat(QVideoFrameFormat::PixelFormat pixelFormat) |
| 27 | { |
| 28 | m_pixelFormat = pixelFormat; |
| 29 | } |
| 30 | |
| 31 | void VideoGenerator::setFrameRate(double rate) |
| 32 | { |
| 33 | m_frameRate = rate; |
| 34 | } |
| 35 | |
| 36 | void VideoGenerator::setPeriod(std::chrono::milliseconds period) |
| 37 | { |
| 38 | m_period = period; |
| 39 | } |
| 40 | |
| 41 | void VideoGenerator::setPresentationRotation(QtVideo::Rotation rotation) |
| 42 | { |
| 43 | m_presentationRotation = rotation; |
| 44 | } |
| 45 | |
| 46 | void VideoGenerator::setPresentationMirrored(bool mirror) |
| 47 | { |
| 48 | m_presentationMirrored = mirror; |
| 49 | } |
| 50 | |
| 51 | void VideoGenerator::emitEmptyFrameOnStop() |
| 52 | { |
| 53 | m_emitEmptyFrameOnStop = true; |
| 54 | } |
| 55 | |
| 56 | static void fillColoredSquares(QImage& image) |
| 57 | { |
| 58 | QList<QColor> colors = { Qt::red, Qt::green, Qt::blue, Qt::yellow }; |
| 59 | const int width = image.width(); |
| 60 | const int height = image.height(); |
| 61 | |
| 62 | for (int j = 0; j < height; ++j) { |
| 63 | for (int i = 0; i < width; ++i) { |
| 64 | const int colorX = i < width / 2 ? 0 : 1; |
| 65 | const int colorY = j < height / 2 ? 0 : 1; |
| 66 | const int colorIndex = colorX + 2 * colorY; |
| 67 | image.setPixel(x: i, y: j, index_or_rgb: colors[colorIndex].rgb()); |
| 68 | } |
| 69 | } |
| 70 | } |
| 71 | |
| 72 | QVideoFrame VideoGenerator::createFrame() |
| 73 | { |
| 74 | using namespace std::chrono; |
| 75 | |
| 76 | QImage image(m_size, QImage::Format_ARGB32); |
| 77 | switch (m_pattern) { |
| 78 | case ImagePattern::SingleColor: |
| 79 | image.fill(color: colors[m_frameIndex % colors.size()]); |
| 80 | break; |
| 81 | case ImagePattern::ColoredSquares: |
| 82 | fillColoredSquares(image); |
| 83 | break; |
| 84 | } |
| 85 | |
| 86 | QVideoFrame rgbFrame(image); |
| 87 | QVideoFrameFormat outputFormat { m_size, m_pixelFormat }; |
| 88 | QVideoFrame frame = |
| 89 | QPlatformMediaIntegration::instance()->convertVideoFrame(rgbFrame, outputFormat); |
| 90 | |
| 91 | if (m_frameRate) |
| 92 | frame.setStreamFrameRate(*m_frameRate); |
| 93 | |
| 94 | if (m_period) { |
| 95 | frame.setStartTime(duration_cast<microseconds>(d: *m_period).count() * m_frameIndex); |
| 96 | frame.setEndTime(duration_cast<microseconds>(d: *m_period).count() * (m_frameIndex + 1)); |
| 97 | } |
| 98 | |
| 99 | if (m_presentationRotation) |
| 100 | frame.setRotation(*m_presentationRotation); |
| 101 | |
| 102 | if (m_presentationMirrored) |
| 103 | frame.setMirrored(*m_presentationMirrored); |
| 104 | |
| 105 | return frame; |
| 106 | } |
| 107 | |
| 108 | void VideoGenerator::nextFrame() |
| 109 | { |
| 110 | if (m_frameIndex == m_maxFrameCount) { |
| 111 | emit done(); |
| 112 | if (m_emitEmptyFrameOnStop) |
| 113 | emit frameCreated(frame: {}); |
| 114 | return; |
| 115 | } |
| 116 | |
| 117 | const QVideoFrame frame = createFrame(); |
| 118 | emit frameCreated(frame); |
| 119 | ++m_frameIndex; |
| 120 | } |
| 121 | |
| 122 | QT_END_NAMESPACE |
| 123 | |
| 124 | #include "moc_framegenerator_p.cpp" |
| 125 |