tst_qwindowscamera.cpp

// Copyright (C) 2026 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#include <QtFFmpegMediaPluginImpl/private/qwindowscamera_p.h>

#include <QtTest/qtest.h>

#include <QtMultimedia/private/qcameradevice_p.h>

#include <QtCore/qobject.h>

using namespace QFFmpeg;

namespace {

constexpr QSize hd{ 1280, 720 };

QCameraFormat makeCameraFormat(QVideoFrameFormat::PixelFormat pixelFormat, QSize resolution,

                               float minFrameRate, float maxFrameRate)

    return (new QCameraFormatPrivate{ QSharedData(), pixelFormat, resolution, minFrameRate,

                                      maxFrameRate })

            ->create();

QCameraFormat fixedRate(QVideoFrameFormat::PixelFormat pixelFormat, QSize resolution,

                        float frameRate)

    return makeCameraFormat(pixelFormat, resolution, frameRate, frameRate);

QList<QCameraFormat> logitechBrio500Formats()

    return { fixedRate(QVideoFrameFormat::Format_NV12, QSize{ 1920, 1080 }, 30.f),

             fixedRate(QVideoFrameFormat::Format_YUYV, hd, 10.f),

             fixedRate(QVideoFrameFormat::Format_YUYV, hd, 7.5f),

             fixedRate(QVideoFrameFormat::Format_YUYV, hd, 5.f),

             fixedRate(QVideoFrameFormat::Format_NV12, hd, 30.f),

             fixedRate(QVideoFrameFormat::Format_YUYV, hd, 60.f),

             fixedRate(QVideoFrameFormat::Format_YUYV, hd, 30.f),

             fixedRate(QVideoFrameFormat::Format_YUYV, hd, 24.f),

             fixedRate(QVideoFrameFormat::Format_YUYV, hd, 20.f),

             fixedRate(QVideoFrameFormat::Format_YUYV, hd, 15.f) };

} // namespace

class tst_QWindowsCamera : public QObject

    Q_OBJECT

private slots:

    void indexOfClosestCameraFormat_returnsFormatWithRequestedFrameRate_data();

    void indexOfClosestCameraFormat_returnsFormatWithRequestedFrameRate();

    void indexOfClosestCameraFormat_returnsNearestRate_whenRateIsNotOffered();

    void indexOfClosestCameraFormat_prefersRangeType_whenMaxRatesAreEqual();

    void indexOfClosestCameraFormat_returnsNoMatch_whenResolutionIsNotOffered();

};

void tst_QWindowsCamera::indexOfClosestCameraFormat_returnsFormatWithRequestedFrameRate_data()

    QTest::addColumn<float>("requestedFrameRate");

    QTest::addColumn<qsizetype>("expectedIndex");

    QTest::newRow("60 fps, enumerated after the slow group") << 60.f << qsizetype(5);

    QTest::newRow("30 fps, also offered by another pixel format") << 30.f << qsizetype(6);

    QTest::newRow("24 fps") << 24.f << qsizetype(7);

    QTest::newRow("20 fps") << 20.f << qsizetype(8);

    QTest::newRow("15 fps") << 15.f << qsizetype(9);

    QTest::newRow("10 fps, enumerated first") << 10.f << qsizetype(1);

    QTest::newRow("7.5 fps, a non-integer rate") << 7.5f << qsizetype(2);

    QTest::newRow("5 fps, the slowest offered") << 5.f << qsizetype(3);

void tst_QWindowsCamera::indexOfClosestCameraFormat_returnsFormatWithRequestedFrameRate()

    QFETCH(const float, requestedFrameRate);

    QFETCH(const qsizetype, expectedIndex);

    const QList<QCameraFormat> candidates = logitechBrio500Formats();

    const QCameraFormat requested =

            fixedRate(QVideoFrameFormat::Format_YUYV, hd, requestedFrameRate);

    QCOMPARE(indexOfClosestCameraFormat(candidates, requested), expectedIndex);

void tst_QWindowsCamera::indexOfClosestCameraFormat_returnsNearestRate_whenRateIsNotOffered()

    const QList<QCameraFormat> candidates = logitechBrio500Formats();

    const QCameraFormat requested = fixedRate(QVideoFrameFormat::Format_YUYV, hd, 40.f);

    QCOMPARE(indexOfClosestCameraFormat(candidates, requested), qsizetype(6));

void tst_QWindowsCamera::indexOfClosestCameraFormat_prefersRangeType_whenMaxRatesAreEqual()

    const QList<QCameraFormat> candidates = {

        fixedRate(QVideoFrameFormat::Format_YUYV, hd, 30.f),

        makeCameraFormat(QVideoFrameFormat::Format_YUYV, hd, 5.f, 30.f)

};

    const QCameraFormat requested = makeCameraFormat(QVideoFrameFormat::Format_YUYV, hd, 5.f, 30.f);

    QCOMPARE(indexOfClosestCameraFormat(candidates, requested), qsizetype(1));

void tst_QWindowsCamera::indexOfClosestCameraFormat_returnsNoMatch_whenResolutionIsNotOffered()

    const QList<QCameraFormat> candidates = logitechBrio500Formats();

    const QCameraFormat requested =

            fixedRate(QVideoFrameFormat::Format_YUYV, QSize{ 640, 480 }, 30.f);

    QCOMPARE(indexOfClosestCameraFormat(candidates, requested), qsizetype(-1));

QTEST_MAIN(tst_QWindowsCamera)

#include "tst_qwindowscamera.moc"