1 files changed, 74 insertions, 0 deletions
diff --git a/src/multimedia/qmediaframeinput_p.h b/src/multimedia/qmediaframeinput_p.h
new file mode 100644
index 000000000..22277865d
--- /dev/null
+++ b/src/multimedia/qmediaframeinput_p.h
@@ -0,0 +1,74 @@
+// Copyright (C) 2024 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 QMEDIAFRAMEINPUT_P_H
+#define QMEDIAFRAMEINPUT_P_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 "qmediacapturesession.h"
+#include <QtCore/private/qobject_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QMediaFrameInputPrivate : public QObjectPrivate
+{
+public:
+    void setCaptureSession(QMediaCaptureSession *session);
+
+    QMediaCaptureSession *captureSession() const { return m_captureSession; }
+
+protected:
+    template <typename Sender>
+    bool sendMediaFrame(Sender &&sender)
+    {
+        if (!m_canSendMediaFrame)
+            return false;
+
+        sender();
+        postponeCheckReadyToSend();
+        return true;
+    }
+
+    template <typename Sender, typename Signal>
+    void addUpdateSignal(Sender sender, Signal signal)
+    {
+        connect(sender, signal, this, &QMediaFrameInputPrivate::updateCanSendMediaFrame);
+    }
+
+    template <typename Sender, typename Signal>
+    void removeUpdateSignal(Sender sender, Signal signal)
+    {
+        disconnect(sender, signal, this, &QMediaFrameInputPrivate::updateCanSendMediaFrame);
+    }
+
+    void updateCanSendMediaFrame();
+
+private:
+    void postponeCheckReadyToSend();
+
+    virtual bool checkIfCanSendMediaFrame() const = 0;
+
+    virtual void emitReadyToSendMediaFrame() = 0;
+
+    virtual void updateCaptureSessionConnections(QMediaCaptureSession *prevSession,
+                                                 QMediaCaptureSession *currentSession) = 0;
+
+private:
+    QMediaCaptureSession *m_captureSession = nullptr;
+    bool m_canSendMediaFrame = false;
+    bool m_postponeReadyToSendCheckRun = false;
+};
+
+QT_END_NAMESPACE
+
+#endif // QMEDIAFRAMEINPUT_P_H