blob: 2f6357aec061022a3b5328a11168b4bac79ee93b [file] [log] [blame]
* 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.
#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 {
static SSRCDatabase* GetSSRCDatabase();
static void ReturnSSRCDatabase();
uint32_t CreateSSRC();
void RegisterSSRC(uint32_t ssrc);
void ReturnSSRC(uint32_t ssrc);
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);
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