1 files changed, 48 insertions, 0 deletions
diff --git a/src/plugins/multimedia/ffmpeg/qcgcapturablewindows.mm b/src/plugins/multimedia/ffmpeg/qcgcapturablewindows.mm
new file mode 100644
index 000000000..eb2035208
--- /dev/null
+++ b/src/plugins/multimedia/ffmpeg/qcgcapturablewindows.mm
@@ -0,0 +1,48 @@
+// Copyright (C) 2023 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
+
+#include "qcgcapturablewindows_p.h"
+#include "private/qcapturablewindow_p.h"
+#include "QtCore/private/qcore_mac_p.h"
+
+#include <AppKit/NSWindow.h>
+
+QT_BEGIN_NAMESPACE
+
+QList<QCapturableWindow> QCGCapturableWindows::windows() const
+{
+    QList<QCapturableWindow> result;
+    QCFType<CFArrayRef> windowList(
+            CGWindowListCopyWindowInfo(kCGWindowListOptionOnScreenOnly, kCGNullWindowID));
+
+    // Iterate through the window dictionaries
+    CFIndex count = CFArrayGetCount(windowList);
+    for (CFIndex i = 0; i < count; ++i) {
+        auto windowInfo = (CFDictionaryRef)CFArrayGetValueAtIndex(windowList, i);
+        auto windowNumber = (CFNumberRef)CFDictionaryGetValue(windowInfo, kCGWindowNumber);
+        auto windowName = (CFStringRef)CFDictionaryGetValue(windowInfo, kCGWindowName);
+
+        CGWindowID windowId = 0;
+        static_assert(sizeof(windowId) == 4,
+                      "CGWindowID size is not compatible with kCFNumberSInt32Type");
+        CFNumberGetValue(windowNumber, kCFNumberSInt32Type, &windowId);
+
+        auto windowData = std::make_unique<QCapturableWindowPrivate>();
+        windowData->id = static_cast<QCapturableWindowPrivate::Id>(windowId);
+        if (windowName)
+            windowData->description = QString::fromCFString(windowName);
+
+        result.push_back(windowData.release()->create());
+    }
+
+    return result;
+}
+
+bool QCGCapturableWindows::isWindowValid(const QCapturableWindowPrivate &window) const
+{
+    QCFType<CFArrayRef> windowList(
+            CGWindowListCreate(kCGWindowListOptionIncludingWindow, window.id));
+    return CFArrayGetCount(windowList) > 0;
+}
+
+QT_END_NAMESPACE