1 /* 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef MODULES_DESKTOP_CAPTURE_MAC_DESKTOP_CONFIGURATION_MONITOR_H_ 12 #define MODULES_DESKTOP_CAPTURE_MAC_DESKTOP_CONFIGURATION_MONITOR_H_ 13 14 #include <ApplicationServices/ApplicationServices.h> 15 16 #include <memory> 17 #include <set> 18 19 #include "api/ref_counted_base.h" 20 #include "modules/desktop_capture/mac/desktop_configuration.h" 21 #include "rtc_base/synchronization/mutex.h" 22 23 namespace webrtc { 24 25 // The class provides functions to synchronize capturing and display 26 // reconfiguring across threads, and the up-to-date MacDesktopConfiguration. 27 class DesktopConfigurationMonitor final 28 : public rtc::RefCountedNonVirtual<DesktopConfigurationMonitor> { 29 public: 30 DesktopConfigurationMonitor(); 31 ~DesktopConfigurationMonitor(); 32 33 DesktopConfigurationMonitor(const DesktopConfigurationMonitor&) = delete; 34 DesktopConfigurationMonitor& operator=(const DesktopConfigurationMonitor&) = 35 delete; 36 37 // Returns the current desktop configuration. 38 MacDesktopConfiguration desktop_configuration(); 39 40 private: 41 static void DisplaysReconfiguredCallback(CGDirectDisplayID display, 42 CGDisplayChangeSummaryFlags flags, 43 void* user_parameter); 44 void DisplaysReconfigured(CGDirectDisplayID display, 45 CGDisplayChangeSummaryFlags flags); 46 47 Mutex desktop_configuration_lock_; 48 MacDesktopConfiguration desktop_configuration_ 49 RTC_GUARDED_BY(&desktop_configuration_lock_); 50 std::set<CGDirectDisplayID> reconfiguring_displays_; 51 }; 52 53 } // namespace webrtc 54 55 #endif // MODULES_DESKTOP_CAPTURE_MAC_DESKTOP_CONFIGURATION_MONITOR_H_ 56