d28db7fd65
Depends on Chrome cl https://codereview.chromium.org/1888003002/, which was landed some time ago. BUG=webrtc:5740 R=stefan@webrtc.org, tommi@webrtc.org Review URL: https://codereview.webrtc.org/1888593004 . Cr-Commit-Position: refs/heads/master@{#12674}
52 lines
1.3 KiB
C++
52 lines
1.3 KiB
C++
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/modules/rtp_rtcp/source/ssrc_database.h"
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#include "webrtc/base/timeutils.h"
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#include "webrtc/base/checks.h"
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namespace webrtc {
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SSRCDatabase* SSRCDatabase::GetSSRCDatabase() {
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return GetStaticInstance<SSRCDatabase>(kAddRef);
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}
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void SSRCDatabase::ReturnSSRCDatabase() {
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GetStaticInstance<SSRCDatabase>(kRelease);
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}
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uint32_t SSRCDatabase::CreateSSRC() {
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rtc::CritScope lock(&crit_);
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while (true) { // Try until get a new ssrc.
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// 0 and 0xffffffff are invalid values for SSRC.
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uint32_t ssrc = random_.Rand(1u, 0xfffffffe);
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if (ssrcs_.insert(ssrc).second) {
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return ssrc;
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}
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}
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}
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void SSRCDatabase::RegisterSSRC(uint32_t ssrc) {
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rtc::CritScope lock(&crit_);
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ssrcs_.insert(ssrc);
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}
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void SSRCDatabase::ReturnSSRC(uint32_t ssrc) {
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rtc::CritScope lock(&crit_);
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ssrcs_.erase(ssrc);
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}
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SSRCDatabase::SSRCDatabase() : random_(rtc::TimeMicros()) {}
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SSRCDatabase::~SSRCDatabase() {}
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} // namespace webrtc
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