qtmultimediaprivateqmlhelper.cpp

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

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

#include "qtmultimediaprivateqmlhelper.h"

#include <QtMultimedia/private/qplatformmediaintegration_p.h>

#include <QtCore/qsettings.h>

using namespace Qt::StringLiterals;

namespace {

[[nodiscard]] QString preferredBackendKey()

    return u"preferredMediaBackend"_s;

[[nodiscard]] QString savedPreferredBackend()

    QSettings settings;

    return settings.value(preferredBackendKey()).toString();

} // anonymous namespace

bool QtMultimediaPrivateQmlHelper::s_environmentOverrideActive = false;

QString QtMultimediaPrivateQmlHelper::mediaBackendName() const

    return QString(QPlatformMediaIntegration::instance()->name());

QStringList QtMultimediaPrivateQmlHelper::availableBackends() const

    return QPlatformMediaIntegration::availableBackends();

QString QtMultimediaPrivateQmlHelper::preferredBackend() const

    return savedPreferredBackend();

bool QtMultimediaPrivateQmlHelper::backendOverriddenByEnvironment() const

    return s_environmentOverrideActive;

void QtMultimediaPrivateQmlHelper::setPreferredBackend(const QString &backend)

    QSettings settings;

    settings.setValue(preferredBackendKey(), backend);

    emit preferredBackendChanged();

void QtMultimediaPrivateQmlHelper::applyPreferredBackendToEnvironment()

    s_environmentOverrideActive = qEnvironmentVariableIsSet("QT_MEDIA_BACKEND");

    if (s_environmentOverrideActive)

        return;

    const QString saved = savedPreferredBackend();

    if (!saved.isEmpty())

        QPlatformMediaIntegration::setBackend(saved);