1 files changed, 88 insertions, 0 deletions
diff --git a/src/multimedia/platform/qplatformsurfacecapture_p.h b/src/multimedia/platform/qplatformsurfacecapture_p.h
new file mode 100644
index 000000000..42fbda474
--- /dev/null
+++ b/src/multimedia/platform/qplatformsurfacecapture_p.h
@@ -0,0 +1,88 @@
+// Copyright (C) 2022 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef QPLATFORMSURFACECAPTURE_H
+#define QPLATFORMSURFACECAPTURE_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "qplatformvideosource_p.h"
+#include "qscreen.h"
+#include "qcapturablewindow.h"
+#include "qpointer.h"
+#include "private/qerrorinfo_p.h"
+
+#include <optional>
+#include <variant>
+
+QT_BEGIN_NAMESPACE
+
+class QVideoFrame;
+
+class Q_MULTIMEDIA_EXPORT QPlatformSurfaceCapture : public QPlatformVideoSource
+{
+    Q_OBJECT
+
+public:
+    enum Error {
+        NoError = 0,
+        InternalError = 1,
+        CapturingNotSupported = 2,
+        CaptureFailed = 4,
+        NotFound = 5,
+    };
+
+    using ScreenSource = QPointer<QScreen>;
+    using WindowSource = QCapturableWindow;
+
+    using Source = std::variant<ScreenSource, WindowSource>;
+
+    explicit QPlatformSurfaceCapture(Source initialSource);
+
+    void setActive(bool active) override;
+    bool isActive() const override;
+
+    void setSource(Source source);
+
+    template<typename Type>
+    Type source() const {
+        return *q_check_ptr(std::get_if<Type>(&m_source));
+    }
+
+    Source source() const { return m_source; }
+
+    Error error() const;
+    QString errorString() const;
+
+protected:
+    virtual bool setActiveInternal(bool) = 0;
+
+    bool checkScreenWithError(ScreenSource &screen);
+
+public Q_SLOTS:
+    void updateError(Error error, const QString &errorString);
+
+Q_SIGNALS:
+    void sourceChanged(WindowSource);
+    void sourceChanged(ScreenSource);
+    void errorChanged();
+    void errorOccurred(Error error, QString errorString);
+
+private:
+    QErrorInfo<Error> m_error;
+    Source m_source;
+    bool m_active = false;
+};
+
+QT_END_NAMESPACE
+
+#endif // QPLATFORMSURFACECAPTURE_H