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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /third_party/libwebrtc/pc/rtcp_mux_filter.h | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/pc/rtcp_mux_filter.h')
-rw-r--r-- | third_party/libwebrtc/pc/rtcp_mux_filter.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/third_party/libwebrtc/pc/rtcp_mux_filter.h b/third_party/libwebrtc/pc/rtcp_mux_filter.h new file mode 100644 index 0000000000..48050de3d8 --- /dev/null +++ b/third_party/libwebrtc/pc/rtcp_mux_filter.h @@ -0,0 +1,78 @@ +/* + * 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. + */ + +#ifndef PC_RTCP_MUX_FILTER_H_ +#define PC_RTCP_MUX_FILTER_H_ + +#include "pc/session_description.h" + +namespace cricket { + +// RTCP Muxer, as defined in RFC 5761 (http://tools.ietf.org/html/rfc5761) +class RtcpMuxFilter { + public: + RtcpMuxFilter(); + + // Whether RTCP mux has been negotiated with a final answer (not provisional). + bool IsFullyActive() const; + + // Whether RTCP mux has been negotiated with a provisional answer; this means + // a later answer could disable RTCP mux, and so the RTCP transport should + // not be disposed yet. + bool IsProvisionallyActive() const; + + // Whether the filter is active, i.e. has RTCP mux been properly negotiated, + // either with a final or provisional answer. + bool IsActive() const; + + // Make the filter active (fully, not provisionally) regardless of the + // current state. This should be used when an endpoint *requires* RTCP mux. + void SetActive(); + + // Specifies whether the offer indicates the use of RTCP mux. + bool SetOffer(bool offer_enable, ContentSource src); + + // Specifies whether the provisional answer indicates the use of RTCP mux. + bool SetProvisionalAnswer(bool answer_enable, ContentSource src); + + // Specifies whether the answer indicates the use of RTCP mux. + bool SetAnswer(bool answer_enable, ContentSource src); + + private: + bool ExpectOffer(bool offer_enable, ContentSource source); + bool ExpectAnswer(ContentSource source); + enum State { + // RTCP mux filter unused. + ST_INIT, + // Offer with RTCP mux enabled received. + // RTCP mux filter is not active. + ST_RECEIVEDOFFER, + // Offer with RTCP mux enabled sent. + // RTCP mux filter can demux incoming packets but is not active. + ST_SENTOFFER, + // RTCP mux filter is active but the sent answer is only provisional. + // When the final answer is set, the state transitions to ST_ACTIVE or + // ST_INIT. + ST_SENTPRANSWER, + // RTCP mux filter is active but the received answer is only provisional. + // When the final answer is set, the state transitions to ST_ACTIVE or + // ST_INIT. + ST_RECEIVEDPRANSWER, + // Offer and answer set, RTCP mux enabled. It is not possible to de-activate + // the filter. + ST_ACTIVE + }; + State state_; + bool offer_enable_; +}; + +} // namespace cricket + +#endif // PC_RTCP_MUX_FILTER_H_ |