1 /* 2 * Copyright (c) 2011 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 WEBRTC_MODULES_RTP_RTCP_SOURCE_SSRC_DATABASE_H_ 12 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_SSRC_DATABASE_H_ 13 14 #include <set> 15 16 #include "webrtc/base/random.h" 17 #include "webrtc/base/scoped_ptr.h" 18 #include "webrtc/system_wrappers/include/static_instance.h" 19 #include "webrtc/typedefs.h" 20 21 namespace webrtc { 22 class CriticalSectionWrapper; 23 24 class SSRCDatabase { 25 public: 26 static SSRCDatabase* GetSSRCDatabase(); 27 static void ReturnSSRCDatabase(); 28 29 uint32_t CreateSSRC(); 30 void RegisterSSRC(uint32_t ssrc); 31 void ReturnSSRC(uint32_t ssrc); 32 33 protected: 34 SSRCDatabase(); 35 virtual ~SSRCDatabase(); 36 37 static SSRCDatabase* CreateInstance() { return new SSRCDatabase(); } 38 39 private: 40 // Friend function to allow the SSRC destructor to be accessed from the 41 // template class. 42 friend SSRCDatabase* GetStaticInstance<SSRCDatabase>( 43 CountOperation count_operation); 44 45 rtc::scoped_ptr<CriticalSectionWrapper> crit_; 46 Random random_ GUARDED_BY(crit_); 47 std::set<uint32_t> ssrcs_ GUARDED_BY(crit_); 48 }; 49 } // namespace webrtc 50 51 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_SSRC_DATABASE_H_ 52
