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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-15 03:35:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-15 03:35:49 +0000 |
commit | d8bbc7858622b6d9c278469aab701ca0b609cddf (patch) | |
tree | eff41dc61d9f714852212739e6b3738b82a2af87 /third_party/libwebrtc/pc/webrtc_sdp.cc | |
parent | Releasing progress-linux version 125.0.3-1~progress7.99u1. (diff) | |
download | firefox-d8bbc7858622b6d9c278469aab701ca0b609cddf.tar.xz firefox-d8bbc7858622b6d9c278469aab701ca0b609cddf.zip |
Merging upstream version 126.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | third_party/libwebrtc/pc/webrtc_sdp.cc | 114 |
1 files changed, 61 insertions, 53 deletions
diff --git a/third_party/libwebrtc/pc/webrtc_sdp.cc b/third_party/libwebrtc/pc/webrtc_sdp.cc index da024eab81..88f1ce0d1b 100644 --- a/third_party/libwebrtc/pc/webrtc_sdp.cc +++ b/third_party/libwebrtc/pc/webrtc_sdp.cc @@ -722,7 +722,7 @@ void CreateTracksFromSsrcInfos(const SsrcInfoVec& ssrc_infos, // This is the case with Plan B SDP msid signaling. stream_ids.push_back(ssrc_info.stream_id); track_id = ssrc_info.track_id; - } else { + } else if (msid_signaling == cricket::kMsidSignalingNotUsed) { // Since no media streams isn't supported with older SDP signaling, we // use a default stream id. stream_ids.push_back(kDefaultMsid); @@ -762,29 +762,6 @@ void GetMediaStreamIds(const ContentInfo* content, } } -// RFC 5245 -// It is RECOMMENDED that default candidates be chosen based on the -// likelihood of those candidates to work with the peer that is being -// contacted. It is RECOMMENDED that relayed > reflexive > host. -static const int kPreferenceUnknown = 0; -static const int kPreferenceHost = 1; -static const int kPreferenceReflexive = 2; -static const int kPreferenceRelayed = 3; - -static int GetCandidatePreferenceFromType(absl::string_view type) { - int preference = kPreferenceUnknown; - if (type == cricket::LOCAL_PORT_TYPE) { - preference = kPreferenceHost; - } else if (type == cricket::STUN_PORT_TYPE) { - preference = kPreferenceReflexive; - } else if (type == cricket::RELAY_PORT_TYPE) { - preference = kPreferenceRelayed; - } else { - RTC_DCHECK_NOTREACHED(); - } - return preference; -} - // Get ip and port of the default destination from the `candidates` with the // given value of `component_id`. The default candidate should be the one most // likely to work, typically IPv4 relay. @@ -800,7 +777,7 @@ static void GetDefaultDestination(const std::vector<Candidate>& candidates, *addr_type = kConnectionIpv4Addrtype; *port = kDummyPort; *ip = kDummyAddress; - int current_preference = kPreferenceUnknown; + int current_preference = 0; // Start with lowest preference int current_family = AF_UNSPEC; for (const Candidate& candidate : candidates) { if (candidate.component() != component_id) { @@ -810,7 +787,7 @@ static void GetDefaultDestination(const std::vector<Candidate>& candidates, if (candidate.protocol() != cricket::UDP_PROTOCOL_NAME) { continue; } - const int preference = GetCandidatePreferenceFromType(candidate.type()); + const int preference = candidate.type_preference(); const int family = candidate.address().ipaddr().family(); // See if this candidate is more preferable then the current one if it's the // same family. Or if the current family is IPv4 already so we could safely @@ -920,23 +897,31 @@ std::string SdpSerialize(const JsepSessionDescription& jdesc) { AddLine(os.str(), &message); } - // MediaStream semantics - InitAttrLine(kAttributeMsidSemantics, &os); - os << kSdpDelimiterColon << " " << kMediaStreamSemantic; + // MediaStream semantics. + // TODO(bugs.webrtc.org/10421): Change to & cricket::kMsidSignalingSemantic + // when we think it's safe to do so, so that we gradually fade out this old + // line that was removed from the specification. + if (desc->msid_signaling() != cricket::kMsidSignalingNotUsed) { + InitAttrLine(kAttributeMsidSemantics, &os); + os << kSdpDelimiterColon << " " << kMediaStreamSemantic; - std::set<std::string> media_stream_ids; - const ContentInfo* audio_content = GetFirstAudioContent(desc); - if (audio_content) - GetMediaStreamIds(audio_content, &media_stream_ids); + // TODO(bugs.webrtc.org/10421): this code only looks at the first + // audio/video content. Fixing that might result in much larger SDP and the + // msid-semantic line should eventually go away so this is not worth fixing. + std::set<std::string> media_stream_ids; + const ContentInfo* audio_content = GetFirstAudioContent(desc); + if (audio_content) + GetMediaStreamIds(audio_content, &media_stream_ids); - const ContentInfo* video_content = GetFirstVideoContent(desc); - if (video_content) - GetMediaStreamIds(video_content, &media_stream_ids); + const ContentInfo* video_content = GetFirstVideoContent(desc); + if (video_content) + GetMediaStreamIds(video_content, &media_stream_ids); - for (const std::string& id : media_stream_ids) { - os << " " << id; + for (const std::string& id : media_stream_ids) { + os << " " << id; + } + AddLine(os.str(), &message); } - AddLine(os.str(), &message); // a=ice-lite // @@ -1839,7 +1824,7 @@ bool IsFmtpParam(absl::string_view name) { return name != kCodecParamPTime && name != kCodecParamMaxPTime; } -bool WriteFmtpParameters(const cricket::CodecParameterMap& parameters, +bool WriteFmtpParameters(const webrtc::CodecParameterMap& parameters, rtc::StringBuilder* os) { bool empty = true; const char* delimiter = ""; // No delimiter before first parameter. @@ -1902,7 +1887,7 @@ bool GetMinValue(const std::vector<int>& values, int* value) { } bool GetParameter(const std::string& name, - const cricket::CodecParameterMap& params, + const webrtc::CodecParameterMap& params, int* value) { std::map<std::string, std::string>::const_iterator found = params.find(name); if (found == params.end()) { @@ -1997,13 +1982,13 @@ void BuildCandidate(const std::vector<Candidate>& candidates, // *(SP extension-att-name SP extension-att-value) std::string type; // Map the cricket candidate type to "host" / "srflx" / "prflx" / "relay" - if (candidate.type() == cricket::LOCAL_PORT_TYPE) { + if (candidate.is_local()) { type = kCandidateHost; - } else if (candidate.type() == cricket::STUN_PORT_TYPE) { + } else if (candidate.is_stun()) { type = kCandidateSrflx; - } else if (candidate.type() == cricket::RELAY_PORT_TYPE) { + } else if (candidate.is_relay()) { type = kCandidateRelay; - } else if (candidate.type() == cricket::PRFLX_PORT_TYPE) { + } else if (candidate.is_prflx()) { type = kCandidatePrflx; // Peer reflexive candidate may be signaled for being removed. } else { @@ -2131,7 +2116,7 @@ bool ParseSessionDescription(absl::string_view message, SdpParseError* error) { absl::optional<absl::string_view> line; - desc->set_msid_supported(false); + desc->set_msid_signaling(cricket::kMsidSignalingNotUsed); desc->set_extmap_allow_mixed(false); // RFC 4566 // v= (protocol version) @@ -2273,8 +2258,9 @@ bool ParseSessionDescription(absl::string_view message, if (!GetValue(*aline, kAttributeMsidSemantics, &semantics, error)) { return false; } - desc->set_msid_supported( - CaseInsensitiveFind(semantics, kMediaStreamSemantic)); + if (CaseInsensitiveFind(semantics, kMediaStreamSemantic)) { + desc->set_msid_signaling(cricket::kMsidSignalingSemantic); + } } else if (HasAttribute(*aline, kAttributeExtmapAllowMixed)) { desc->set_extmap_allow_mixed(true); } else if (HasAttribute(*aline, kAttributeExtmap)) { @@ -2614,6 +2600,25 @@ void MaybeCreateStaticPayloadAudioCodecs(const std::vector<int>& fmts, } } +static void BackfillCodecParameters(std::vector<cricket::Codec>& codecs) { + for (auto& codec : codecs) { + std::string unused_value; + if (absl::EqualsIgnoreCase(cricket::kVp9CodecName, codec.name)) { + // https://datatracker.ietf.org/doc/html/draft-ietf-payload-vp9#section-6 + // profile-id defaults to "0" + if (!codec.GetParam(cricket::kVP9ProfileId, &unused_value)) { + codec.SetParam(cricket::kVP9ProfileId, "0"); + } + } else if (absl::EqualsIgnoreCase(cricket::kH264CodecName, codec.name)) { + // https://www.rfc-editor.org/rfc/rfc6184#section-6.2 + // packetization-mode defaults to "0" + if (!codec.GetParam(cricket::kH264FmtpPacketizationMode, &unused_value)) { + codec.SetParam(cricket::kH264FmtpPacketizationMode, "0"); + } + } + } +} + static std::unique_ptr<MediaContentDescription> ParseContentDescription( absl::string_view message, const cricket::MediaType media_type, @@ -2657,6 +2662,9 @@ static std::unique_ptr<MediaContentDescription> ParseContentDescription( const cricket::Codec& b) { return payload_type_preferences[a.id] > payload_type_preferences[b.id]; }); + // Backfill any default parameters. + BackfillCodecParameters(codecs); + media_desc->set_codecs(codecs); return media_desc; } @@ -2672,7 +2680,7 @@ bool ParseMediaDescription( SdpParseError* error) { RTC_DCHECK(desc != NULL); int mline_index = -1; - int msid_signaling = 0; + int msid_signaling = desc->msid_signaling(); // Zero or more media descriptions // RFC 4566 @@ -2724,7 +2732,7 @@ bool ParseMediaDescription( std::unique_ptr<MediaContentDescription> content; std::string content_name; bool bundle_only = false; - int section_msid_signaling = 0; + int section_msid_signaling = cricket::kMsidSignalingNotUsed; absl::string_view media_type = fields[0]; if ((media_type == kMediaTypeVideo || media_type == kMediaTypeAudio) && !cricket::IsRtpProtocol(protocol)) { @@ -2854,7 +2862,7 @@ bool ParseMediaDescription( return true; } -void AddParameters(const cricket::CodecParameterMap& parameters, +void AddParameters(const webrtc::CodecParameterMap& parameters, cricket::Codec* codec) { for (const auto& entry : parameters) { const std::string& key = entry.first; @@ -2917,7 +2925,7 @@ void AddOrReplaceCodec(MediaContentDescription* content_desc, // to `parameters`. void UpdateCodec(MediaContentDescription* content_desc, int payload_type, - const cricket::CodecParameterMap& parameters) { + const webrtc::CodecParameterMap& parameters) { // Codec might already have been populated (from rtpmap). cricket::Codec new_codec = GetCodecWithPayloadType( content_desc->type(), content_desc->codecs(), payload_type); @@ -3740,7 +3748,7 @@ bool ParseFmtpAttributes(absl::string_view line, } // Parse out format specific parameters. - cricket::CodecParameterMap codec_params; + webrtc::CodecParameterMap codec_params; for (absl::string_view param : rtc::split(line_params, kSdpDelimiterSemicolonChar)) { std::string name; |