Home | History | Annotate | Download | only in source 
      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 <map>
     15 
     16 #include "webrtc/system_wrappers/interface/static_instance.h"
     17 #include "webrtc/typedefs.h"
     18 
     19 namespace webrtc {
     20 class CriticalSectionWrapper;
     21 
     22 class SSRCDatabase
     23 {
     24 public:
     25     static SSRCDatabase* GetSSRCDatabase();
     26     static void ReturnSSRCDatabase();
     27 
     28     uint32_t CreateSSRC();
     29     int32_t RegisterSSRC(const uint32_t ssrc);
     30     int32_t ReturnSSRC(const uint32_t ssrc);
     31 
     32 protected:
     33     SSRCDatabase();
     34     virtual ~SSRCDatabase();
     35 
     36     static SSRCDatabase* CreateInstance() { return new SSRCDatabase(); }
     37 
     38 private:
     39     // Friend function to allow the SSRC destructor to be accessed from the
     40     // template class.
     41     friend SSRCDatabase* GetStaticInstance<SSRCDatabase>(
     42         CountOperation count_operation);
     43     static SSRCDatabase* StaticInstance(CountOperation count_operation);
     44 
     45     uint32_t GenerateRandom();
     46 
     47     std::map<uint32_t, uint32_t>    _ssrcMap;
     48 
     49     CriticalSectionWrapper* _critSect;
     50 };
     51 }  // namespace webrtc
     52 
     53 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_SSRC_DATABASE_H_
     54