1 files changed, 88 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/desktop_capture/linux/x11/shared_x_display.h b/third_party/libwebrtc/modules/desktop_capture/linux/x11/shared_x_display.h
new file mode 100644
index 0000000000..c05fc46546
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+++ b/third_party/libwebrtc/modules/desktop_capture/linux/x11/shared_x_display.h
@@ -0,0 +1,88 @@
+/*
+ *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef MODULES_DESKTOP_CAPTURE_LINUX_X11_SHARED_X_DISPLAY_H_
+#define MODULES_DESKTOP_CAPTURE_LINUX_X11_SHARED_X_DISPLAY_H_
+
+#include <map>
+#include <vector>
+
+#include "absl/strings/string_view.h"
+#include "api/ref_counted_base.h"
+#include "api/scoped_refptr.h"
+#include "rtc_base/synchronization/mutex.h"
+#include "rtc_base/system/rtc_export.h"
+#include "rtc_base/thread_annotations.h"
+
+// Including Xlib.h will involve evil defines (Bool, Status, True, False), which
+// easily conflict with other headers.
+typedef struct _XDisplay Display;
+typedef union _XEvent XEvent;
+
+namespace webrtc {
+
+// A ref-counted object to store XDisplay connection.
+class RTC_EXPORT SharedXDisplay
+    : public rtc::RefCountedNonVirtual<SharedXDisplay> {
+ public:
+  class XEventHandler {
+   public:
+    virtual ~XEventHandler() {}
+
+    // Processes XEvent. Returns true if the event has been handled.
+    virtual bool HandleXEvent(const XEvent& event) = 0;
+  };
+
+  // Creates a new X11 Display for the `display_name`. NULL is returned if X11
+  // connection failed. Equivalent to CreateDefault() when `display_name` is
+  // empty.
+  static rtc::scoped_refptr<SharedXDisplay> Create(
+      absl::string_view display_name);
+
+  // Creates X11 Display connection for the default display (e.g. specified in
+  // DISPLAY). NULL is returned if X11 connection failed.
+  static rtc::scoped_refptr<SharedXDisplay> CreateDefault();
+
+  Display* display() { return display_; }
+
+  // Adds a new event `handler` for XEvent's of `type`.
+  void AddEventHandler(int type, XEventHandler* handler);
+
+  // Removes event `handler` added using `AddEventHandler`. Doesn't do anything
+  // if `handler` is not registered.
+  void RemoveEventHandler(int type, XEventHandler* handler);
+
+  // Processes pending XEvents, calling corresponding event handlers.
+  void ProcessPendingXEvents();
+
+  void IgnoreXServerGrabs();
+
+  ~SharedXDisplay();
+
+  SharedXDisplay(const SharedXDisplay&) = delete;
+  SharedXDisplay& operator=(const SharedXDisplay&) = delete;
+
+ protected:
+  // Takes ownership of `display`.
+  explicit SharedXDisplay(Display* display);
+
+ private:
+  typedef std::map<int, std::vector<XEventHandler*> > EventHandlersMap;
+
+  Display* display_;
+
+  Mutex mutex_;
+
+  EventHandlersMap event_handlers_ RTC_GUARDED_BY(mutex_);
+};
+
+}  // namespace webrtc
+
+#endif  // MODULES_DESKTOP_CAPTURE_LINUX_X11_SHARED_X_DISPLAY_H_