ae695e95a6
* SSRCDatabase doesn't need to be a global instance, so I've changed it to be a "regular" class (i.e. construct via ctor, not maybe via GetSSRCDatabase( + release via ReturnSSRCDatabase())). If we ever have parallel tests running in the same process, they won't have the problem of using the same ssrc database. * Made RtpSender a more const. Also added some todos for myself and holmer to look into clarifying the threading model. * Switched from CriticalSectionWrapper to rtc::CriticalSection * Changed the random seeding to use TickTime::Now().Ticks() since TimeInMicroseconds() could return 0 when the process was starting. This is what TimeInMicroseconds() does anyway but now we don't need to access a global clock object. BUG=webrtc:3062 Review URL: https://codereview.webrtc.org/1623543002 Cr-Commit-Position: refs/heads/master@{#11462}
53 lines
1.4 KiB
C++
53 lines
1.4 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/checks.h"
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#include "webrtc/system_wrappers/include/tick_util.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_(TickTime::Now().Ticks()) {}
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SSRCDatabase::~SSRCDatabase() {}
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} // namespace webrtc
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