Struct RtpRewriteRule 

pub struct RtpRewriteRule {
    pub match_payload_type: Option<u8>,
    pub fixed_out_ssrc: Option<u32>,
    pub ssrc_offset: u32,
    pub out_payload_type: Option<u8>,
    pub sdes_mid_extension_id: Option<u8>,
    pub sdes_mid: Option<String>,
}

A single payload-type-scoped rewrite rule for the RTP rewrite bridge.

The bridge rewrites every forwarded packet using the most specific match: a rule whose match_payload_type equals the packet’s payload type wins; otherwise the single rule with match_payload_type: None acts as the catch-all. Audio-only relays install one catch-all rule; video relays add one rule per m-line payload type so audio, video and DTMF each get their own destination SSRC / payload type (the legacy single-param bridge rewrote every packet — audio AND video — to one SSRC/PT, which corrupted video).

Fields

match_payload_type: Option<u8>

When Some(pt), only packets carrying this payload type are rewritten. When None, this is the catch-all rule applied to any other packet.

fixed_out_ssrc: Option<u32>

Fixed SSRC written on rewritten packets. Defaults to src_ssrc + ssrc_offset when None.

ssrc_offset: u32

SSRC offset applied when fixed_out_ssrc is None.

out_payload_type: Option<u8>

Replacement payload type, or None to keep the original.

sdes_mid_extension_id: Option<u8>

SDES-MID RTP header extension id (the extmap id negotiated for urn:ietf:params:rtp-hdrext:sdes:mid). When set together with Self::sdes_mid, packets rewritten by this rule get the MID extension stamped so a WebRTC receiver (Chrome) can attribute them to the negotiated track regardless of SSRC. Payload-type-scoped: audio/DTMF rules carry the audio m-line’s mid, video rules the video m-line’s mid. Only written when the bridge’s RtpRewriteBridgeOptions::strip_extensions is false.

sdes_mid: Option<String>

The destination leg’s MID value for this m-line (e.g. “0” for the audio m-line, “1” for video).

Implementations

impl RtpRewriteRule

pub fn catch_all(params: RtpRewriteBridgeParams) -> Self

The catch-all rule mirroring the legacy single-params behavior.

pub fn dtmf(src_pt: u8, dst_pt: u8, params: RtpRewriteBridgeParams) -> Self

DTMF remap: rewrite a specific source PT to a destination PT while inheriting the same SSRC rewrite as the catch-all rule.

pub fn from_params(params: RtpRewriteBridgeParams) -> Vec<Self>

Convert the legacy params into the rule list they map to: a catch-all rule plus, when DTMF remapping is configured, a DTMF rule. This is the single place that interprets the legacy struct, keeping the rewrite path itself rule-table-only.

Trait Implementations

impl Clone for RtpRewriteRule

fn clone(&self) -> RtpRewriteRule

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for RtpRewriteRule

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.