// Comparison used for the Codec::Matches function bool MatchesWithCodecRules(const Codec& left_codec, const Codec& codec);
// Comparison that also checks on codecs referenced by PT in the // fmtp line, as used with RED and RTX "codecs". bool MatchesWithReferenceAttributes(const Codec& left_codec, const Codec& right_codec);
// Finds a codec in `codecs2` that matches `codec_to_match`, which is // a member of `codecs1`. If `codec_to_match` is an RED or RTX codec, both // the codecs themselves and their associated codecs must match. // The purpose of this function is that codecs1 and codecs2 are different // PT numbering spaces, and it is trying to find the codec in codecs2 // that has the same functionality as `codec_to_match` so that its PT // can be used in place of the original.
std::optional<Codec> FindMatchingCodec(const std::vector<Codec>& codecs1, const std::vector<Codec>& codecs2, const Codec& codec_to_match);
// Similar to `Codec::MatchesRtpCodec` but not an exact match of parameters. // Unspecified parameters are treated as default. bool IsSameRtpCodec(const Codec& codec, const RtpCodec& rtp_codec);
// Similar to `IsSameRtpCodec` but ignoring the level related parameter. bool IsSameRtpCodecIgnoringLevel(const Codec& codec, const RtpCodec& rtp_codec);
// Returns true if the two codecs have the same H.264 packetization-mode. bool IsSameH264PacketizationMode(const CodecParameterMap& left, const CodecParameterMap& right);
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