mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-14 14:20:45 +01:00
665174fdbb
Running clang-format with chromium's style guide. The goal is n-fold: * providing consistency and readability (that's what code guidelines are for) * preventing noise with presubmit checks and git cl format * building on the previous point: making it easier to automatically fix format issues * you name it Please consider using git-hyper-blame to ignore this commit. Bug: webrtc:9340 Change-Id: I694567c4cdf8cee2860958cfe82bfaf25848bb87 Reviewed-on: https://webrtc-review.googlesource.com/81185 Reviewed-by: Patrik Höglund <phoglund@webrtc.org> Cr-Commit-Position: refs/heads/master@{#23660}
124 lines
3.6 KiB
C++
124 lines
3.6 KiB
C++
/*
|
|
* Copyright 2004 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 "pc/rtcpmuxfilter.h"
|
|
|
|
#include "rtc_base/logging.h"
|
|
|
|
namespace cricket {
|
|
|
|
RtcpMuxFilter::RtcpMuxFilter() : state_(ST_INIT), offer_enable_(false) {}
|
|
|
|
bool RtcpMuxFilter::IsFullyActive() const {
|
|
return state_ == ST_ACTIVE;
|
|
}
|
|
|
|
bool RtcpMuxFilter::IsProvisionallyActive() const {
|
|
return state_ == ST_SENTPRANSWER || state_ == ST_RECEIVEDPRANSWER;
|
|
}
|
|
|
|
bool RtcpMuxFilter::IsActive() const {
|
|
return IsFullyActive() || IsProvisionallyActive();
|
|
}
|
|
|
|
void RtcpMuxFilter::SetActive() {
|
|
state_ = ST_ACTIVE;
|
|
}
|
|
|
|
bool RtcpMuxFilter::SetOffer(bool offer_enable, ContentSource src) {
|
|
if (state_ == ST_ACTIVE) {
|
|
// Fail if we try to deactivate and no-op if we try and activate.
|
|
return offer_enable;
|
|
}
|
|
|
|
if (!ExpectOffer(offer_enable, src)) {
|
|
RTC_LOG(LS_ERROR) << "Invalid state for change of RTCP mux offer";
|
|
return false;
|
|
}
|
|
|
|
offer_enable_ = offer_enable;
|
|
state_ = (src == CS_LOCAL) ? ST_SENTOFFER : ST_RECEIVEDOFFER;
|
|
return true;
|
|
}
|
|
|
|
bool RtcpMuxFilter::SetProvisionalAnswer(bool answer_enable,
|
|
ContentSource src) {
|
|
if (state_ == ST_ACTIVE) {
|
|
// Fail if we try to deactivate and no-op if we try and activate.
|
|
return answer_enable;
|
|
}
|
|
|
|
if (!ExpectAnswer(src)) {
|
|
RTC_LOG(LS_ERROR) << "Invalid state for RTCP mux provisional answer";
|
|
return false;
|
|
}
|
|
|
|
if (offer_enable_) {
|
|
if (answer_enable) {
|
|
if (src == CS_REMOTE)
|
|
state_ = ST_RECEIVEDPRANSWER;
|
|
else // CS_LOCAL
|
|
state_ = ST_SENTPRANSWER;
|
|
} else {
|
|
// The provisional answer doesn't want to use RTCP mux.
|
|
// Go back to the original state after the offer was set and wait for next
|
|
// provisional or final answer.
|
|
if (src == CS_REMOTE)
|
|
state_ = ST_SENTOFFER;
|
|
else // CS_LOCAL
|
|
state_ = ST_RECEIVEDOFFER;
|
|
}
|
|
} else if (answer_enable) {
|
|
// If the offer didn't specify RTCP mux, the answer shouldn't either.
|
|
RTC_LOG(LS_WARNING) << "Invalid parameters in RTCP mux provisional answer";
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool RtcpMuxFilter::SetAnswer(bool answer_enable, ContentSource src) {
|
|
if (state_ == ST_ACTIVE) {
|
|
// Fail if we try to deactivate and no-op if we try and activate.
|
|
return answer_enable;
|
|
}
|
|
|
|
if (!ExpectAnswer(src)) {
|
|
RTC_LOG(LS_ERROR) << "Invalid state for RTCP mux answer";
|
|
return false;
|
|
}
|
|
|
|
if (offer_enable_ && answer_enable) {
|
|
state_ = ST_ACTIVE;
|
|
} else if (answer_enable) {
|
|
// If the offer didn't specify RTCP mux, the answer shouldn't either.
|
|
RTC_LOG(LS_WARNING) << "Invalid parameters in RTCP mux answer";
|
|
return false;
|
|
} else {
|
|
state_ = ST_INIT;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool RtcpMuxFilter::ExpectOffer(bool offer_enable, ContentSource source) {
|
|
return ((state_ == ST_INIT) ||
|
|
(state_ == ST_ACTIVE && offer_enable == offer_enable_) ||
|
|
(state_ == ST_SENTOFFER && source == CS_LOCAL) ||
|
|
(state_ == ST_RECEIVEDOFFER && source == CS_REMOTE));
|
|
}
|
|
|
|
bool RtcpMuxFilter::ExpectAnswer(ContentSource source) {
|
|
return ((state_ == ST_SENTOFFER && source == CS_REMOTE) ||
|
|
(state_ == ST_RECEIVEDOFFER && source == CS_LOCAL) ||
|
|
(state_ == ST_SENTPRANSWER && source == CS_LOCAL) ||
|
|
(state_ == ST_RECEIVEDPRANSWER && source == CS_REMOTE));
|
|
}
|
|
|
|
} // namespace cricket
|