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675513b96a
This CL has been generated with the following script: for m in PLOG \ LOG_TAG \ LOG_GLEM \ LOG_GLE_EX \ LOG_GLE \ LAST_SYSTEM_ERROR \ LOG_ERRNO_EX \ LOG_ERRNO \ LOG_ERR_EX \ LOG_ERR \ LOG_V \ LOG_F \ LOG_T_F \ LOG_E \ LOG_T \ LOG_CHECK_LEVEL_V \ LOG_CHECK_LEVEL \ LOG do git grep -l $m | xargs sed -i "s,\b$m\b,RTC_$m,g" done git checkout rtc_base/logging.h git cl format Bug: webrtc:8452 Change-Id: I1a53ef3e0a5ef6e244e62b2e012b864914784600 Reviewed-on: https://webrtc-review.googlesource.com/21325 Reviewed-by: Niels Moller <nisse@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Cr-Commit-Position: refs/heads/master@{#20617}
125 lines
3.6 KiB
C++
125 lines
3.6 KiB
C++
/*
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* Copyright 2004 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 "pc/rtcpmuxfilter.h"
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#include "rtc_base/logging.h"
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namespace cricket {
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RtcpMuxFilter::RtcpMuxFilter() : state_(ST_INIT), offer_enable_(false) {
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}
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bool RtcpMuxFilter::IsFullyActive() const {
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return state_ == ST_ACTIVE;
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}
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bool RtcpMuxFilter::IsProvisionallyActive() const {
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return state_ == ST_SENTPRANSWER || state_ == ST_RECEIVEDPRANSWER;
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}
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bool RtcpMuxFilter::IsActive() const {
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return IsFullyActive() || IsProvisionallyActive();
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}
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void RtcpMuxFilter::SetActive() {
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state_ = ST_ACTIVE;
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}
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bool RtcpMuxFilter::SetOffer(bool offer_enable, ContentSource src) {
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if (state_ == ST_ACTIVE) {
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// Fail if we try to deactivate and no-op if we try and activate.
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return offer_enable;
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}
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if (!ExpectOffer(offer_enable, src)) {
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RTC_LOG(LS_ERROR) << "Invalid state for change of RTCP mux offer";
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return false;
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}
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offer_enable_ = offer_enable;
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state_ = (src == CS_LOCAL) ? ST_SENTOFFER : ST_RECEIVEDOFFER;
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return true;
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}
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bool RtcpMuxFilter::SetProvisionalAnswer(bool answer_enable,
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ContentSource src) {
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if (state_ == ST_ACTIVE) {
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// Fail if we try to deactivate and no-op if we try and activate.
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return answer_enable;
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}
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if (!ExpectAnswer(src)) {
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RTC_LOG(LS_ERROR) << "Invalid state for RTCP mux provisional answer";
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return false;
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}
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if (offer_enable_) {
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if (answer_enable) {
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if (src == CS_REMOTE)
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state_ = ST_RECEIVEDPRANSWER;
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else // CS_LOCAL
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state_ = ST_SENTPRANSWER;
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} else {
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// The provisional answer doesn't want to use RTCP mux.
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// Go back to the original state after the offer was set and wait for next
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// provisional or final answer.
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if (src == CS_REMOTE)
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state_ = ST_SENTOFFER;
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else // CS_LOCAL
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state_ = ST_RECEIVEDOFFER;
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}
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} else if (answer_enable) {
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// If the offer didn't specify RTCP mux, the answer shouldn't either.
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RTC_LOG(LS_WARNING) << "Invalid parameters in RTCP mux provisional answer";
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return false;
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}
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return true;
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}
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bool RtcpMuxFilter::SetAnswer(bool answer_enable, ContentSource src) {
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if (state_ == ST_ACTIVE) {
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// Fail if we try to deactivate and no-op if we try and activate.
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return answer_enable;
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}
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if (!ExpectAnswer(src)) {
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RTC_LOG(LS_ERROR) << "Invalid state for RTCP mux answer";
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return false;
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}
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if (offer_enable_ && answer_enable) {
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state_ = ST_ACTIVE;
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} else if (answer_enable) {
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// If the offer didn't specify RTCP mux, the answer shouldn't either.
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RTC_LOG(LS_WARNING) << "Invalid parameters in RTCP mux answer";
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return false;
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} else {
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state_ = ST_INIT;
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}
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return true;
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}
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bool RtcpMuxFilter::ExpectOffer(bool offer_enable, ContentSource source) {
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return ((state_ == ST_INIT) ||
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(state_ == ST_ACTIVE && offer_enable == offer_enable_) ||
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(state_ == ST_SENTOFFER && source == CS_LOCAL) ||
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(state_ == ST_RECEIVEDOFFER && source == CS_REMOTE));
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}
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bool RtcpMuxFilter::ExpectAnswer(ContentSource source) {
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return ((state_ == ST_SENTOFFER && source == CS_REMOTE) ||
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(state_ == ST_RECEIVEDOFFER && source == CS_LOCAL) ||
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(state_ == ST_SENTPRANSWER && source == CS_LOCAL) ||
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(state_ == ST_RECEIVEDPRANSWER && source == CS_REMOTE));
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}
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} // namespace cricket
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