1 files changed, 58 insertions, 0 deletions
diff --git a/osdep/macOS_swift_extensions.swift b/osdep/macOS_swift_extensions.swift
new file mode 100644
index 0000000000..14d217f589
--- /dev/null
+++ b/osdep/macOS_swift_extensions.swift
@@ -0,0 +1,58 @@
+/*
+ * This file is part of mpv.
+ *
+ * mpv is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * mpv is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import Cocoa
+
+extension NSScreen {
+
+    public var displayID: CGDirectDisplayID {
+        get {
+            return deviceDescription["NSScreenNumber"] as! CGDirectDisplayID
+        }
+    }
+
+    public var displayName: String? {
+        get {
+            var name: String? = nil
+            var object: io_object_t
+            var iter = io_iterator_t()
+            let matching = IOServiceMatching("IODisplayConnect")
+            let result = IOServiceGetMatchingServices(kIOMasterPortDefault, matching, &iter)
+
+            if result != KERN_SUCCESS || iter == 0 { return nil }
+
+            repeat {
+                object = IOIteratorNext(iter)
+                let info = IODisplayCreateInfoDictionary(object, IOOptionBits(kIODisplayOnlyPreferredName)).takeRetainedValue() as! [String:AnyObject]
+                if (info[kDisplayVendorID] as? UInt32 == CGDisplayVendorNumber(displayID) &&
+                    info[kDisplayProductID] as? UInt32 == CGDisplayModelNumber(displayID) &&
+                    info[kDisplaySerialNumber] as? UInt32 ?? 0 == CGDisplaySerialNumber(displayID))
+                {
+                    if let productNames = info["DisplayProductName"] as? [String:String],
+                       let productName = productNames.first?.value
+                    {
+                        name = productName
+                        break
+                    }
+                }
+            } while object != 0
+
+            IOObjectRelease(iter)
+            return name
+        }
+    }
+}