| /* |
| * Copyright (c) 2011 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 WEBRTC_MODULES_RTP_RTCP_SOURCE_SSRC_DATABASE_H_ |
| #define WEBRTC_MODULES_RTP_RTCP_SOURCE_SSRC_DATABASE_H_ |
| |
| #include <set> |
| |
| #include "webrtc/base/criticalsection.h" |
| #include "webrtc/base/random.h" |
| #include "webrtc/base/thread_annotations.h" |
| #include "webrtc/system_wrappers/include/static_instance.h" |
| #include "webrtc/typedefs.h" |
| |
| namespace webrtc { |
| |
| // TODO(tommi, holmer): Look into whether we can eliminate locking in this |
| // class or the class itself completely once voice engine doesn't rely on it. |
| // At the moment voe_auto_test requires locking, but it's not clear if that's |
| // an issue with the test code or if it reflects real world usage or if that's |
| // the best design performance wise. |
| // If we do decide to keep the class, we should at least get rid of using |
| // StaticInstance. |
| class SSRCDatabase { |
| public: |
| static SSRCDatabase* GetSSRCDatabase(); |
| static void ReturnSSRCDatabase(); |
| |
| uint32_t CreateSSRC(); |
| void RegisterSSRC(uint32_t ssrc); |
| void ReturnSSRC(uint32_t ssrc); |
| |
| protected: |
| SSRCDatabase(); |
| ~SSRCDatabase(); |
| |
| static SSRCDatabase* CreateInstance() { return new SSRCDatabase(); } |
| |
| // Friend function to allow the SSRC destructor to be accessed from the |
| // template class. |
| friend SSRCDatabase* GetStaticInstance<SSRCDatabase>( |
| CountOperation count_operation); |
| |
| private: |
| rtc::CriticalSection crit_; |
| Random random_ GUARDED_BY(crit_); |
| std::set<uint32_t> ssrcs_ GUARDED_BY(crit_); |
| // TODO(tommi): Use a thread checker to ensure the object is created and |
| // deleted on the same thread. At the moment this isn't possible due to |
| // voe::ChannelOwner in voice engine. To reproduce, run: |
| // voe_auto_test --automated --gtest_filter=*MixManyChannelsForStressOpus |
| }; |
| } // namespace webrtc |
| |
| #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_SSRC_DATABASE_H_ |