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e831b8c94d
This is intended to ensure compatibility between Plan B and Unified Plan endpoints for the single audio - single video case. If Unified Plan is the offerer, it will add a=msid and a=ssrc MSID entries to its offer. If Unified Plan is the answerer, it will use whatever MSID signaling mechanism was used in the offer (either a=msid or a=ssrc). Bug: webrtc:7600 Change-Id: I6192dec19123fbb56f5d04540d2175c7fb30b9b6 Reviewed-on: https://webrtc-review.googlesource.com/44162 Commit-Queue: Steve Anton <steveanton@webrtc.org> Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Cr-Commit-Position: refs/heads/master@{#21859}
86 lines
3.4 KiB
C++
86 lines
3.4 KiB
C++
/*
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* Copyright 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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// This file contain functions for parsing and serializing SDP messages.
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// Related RFC/draft including:
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// * RFC 4566 - SDP
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// * RFC 5245 - ICE
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// * RFC 3388 - Grouping of Media Lines in SDP
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// * RFC 4568 - SDP Security Descriptions for Media Streams
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// * draft-lennox-mmusic-sdp-source-selection-02 -
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// Mechanisms for Media Source Selection in SDP
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#ifndef PC_WEBRTCSDP_H_
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#define PC_WEBRTCSDP_H_
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#include <string>
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namespace cricket {
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class Candidate;
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} // namespace cricket
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namespace webrtc {
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class IceCandidateInterface;
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class JsepIceCandidate;
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class JsepSessionDescription;
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struct SdpParseError;
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// Serializes the passed in JsepSessionDescription.
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// Serialize SessionDescription including candidates if
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// JsepSessionDescription has candidates.
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// jdesc - The JsepSessionDescription object to be serialized.
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// unified_plan_sdp - If set to true, include "a=msid" lines where appropriate.
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// return - SDP string serialized from the arguments.
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std::string SdpSerialize(const JsepSessionDescription& jdesc);
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// Serializes the passed in IceCandidateInterface to a SDP string.
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// candidate - The candidate to be serialized.
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std::string SdpSerializeCandidate(const IceCandidateInterface& candidate);
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// Serializes a cricket Candidate.
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// candidate - The candidate to be serialized.
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std::string SdpSerializeCandidate(const cricket::Candidate& candidate);
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// Deserializes the passed in SDP string to a JsepSessionDescription.
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// message - SDP string to be Deserialized.
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// jdesc - The JsepSessionDescription deserialized from the SDP string.
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// error - The detail error information when parsing fails.
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// return - true on success, false on failure.
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bool SdpDeserialize(const std::string& message,
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JsepSessionDescription* jdesc,
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SdpParseError* error);
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// Deserializes the passed in SDP string to one JsepIceCandidate.
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// The first line must be a=candidate line and only the first line will be
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// parsed.
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// message - The SDP string to be Deserialized.
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// candidates - The JsepIceCandidate from the SDP string.
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// error - The detail error information when parsing fails.
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// return - true on success, false on failure.
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bool SdpDeserializeCandidate(const std::string& message,
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JsepIceCandidate* candidate,
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SdpParseError* error);
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// Deserializes the passed in SDP string to a cricket Candidate.
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// The first line must be a=candidate line and only the first line will be
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// parsed.
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// transport_name - The transport name (MID) of the candidate.
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// message - The SDP string to be deserialized.
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// candidate - The cricket Candidate from the SDP string.
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// error - The detail error information when parsing fails.
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// return - true on success, false on failure.
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bool SdpDeserializeCandidate(const std::string& transport_name,
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const std::string& message,
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cricket::Candidate* candidate,
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SdpParseError* error);
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} // namespace webrtc
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#endif // PC_WEBRTCSDP_H_
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