sdp_nom/attributes/
ssrc.rs

1use std::borrow::Cow;
2
3use derive_into_owned::IntoOwned;
4use nom::{
5    branch::alt,
6    bytes::complete::{is_not, tag},
7    character::complete::multispace0,
8    combinator::map,
9    sequence::{preceded, separated_pair, tuple},
10    IResult,
11};
12
13use crate::parsers::*;
14#[cfg(test)]
15use crate::{assert_line, assert_line_print};
16
17#[derive(Clone, IntoOwned, PartialEq, Eq)]
18#[cfg_attr(feature = "debug", derive(Debug))]
19#[cfg_attr(
20    feature = "serde",
21    derive(serde::Serialize, serde::Deserialize),
22    serde(rename_all = "camelCase")
23)]
24pub struct Ssrc<'a> {
25    pub id: u64,
26    pub attribute: Cow<'a, str>,
27    pub value: Cow<'a, str>,
28}
29
30/// ssrc
31pub fn ssrc_line(input: &str) -> IResult<&str, Ssrc> {
32    attribute(
33        "ssrc",
34        map(
35            tuple((
36                wsf(read_big_number), // id
37                preceded(
38                    multispace0,
39                    separated_pair(
40                        cowify(read_non_colon_string),
41                        tag(":"),
42                        cowify(wsf(is_not("\n"))),
43                    ),
44                ),
45            )),
46            |(id, (attribute, value))| Ssrc {
47                id,
48                attribute,
49                value,
50            },
51        ),
52    )(input)
53}
54
55#[test]
56#[rustfmt::skip]
57fn test_ssrc_line() {
58    assert_line!(
59        ssrc_line,
60        "a=ssrc:1366781084 cname:EocUG1f0fcg/yvY7",
61        Ssrc { id: 1366781084, attribute: "cname".into(), value: "EocUG1f0fcg/yvY7".into() },
62        print
63    );
64    assert_line!(
65        ssrc_line,
66        "a=ssrc: 1366781084 cname: EocUG1f0fcg/yvY7",
67        Ssrc { id: 1366781084, attribute: "cname".into(), value: "EocUG1f0fcg/yvY7".into() }
68    );
69    assert_line!(ssrc_line, "a=ssrc:3570614608 cname:4TOk42mSjXCkVIa6");
70    assert_line!(ssrc_line, "a=ssrc:3570614608 msid:lgsCFqt9kN2fVKw5wg3NKqGdATQoltEwOdMS 35429d94-5637-4686-9ecd-7d0622261ce8");
71    assert_line!(ssrc_line, "a=ssrc:3570614608 mslabel:lgsCFqt9kN2fVKw5wg3NKqGdATQoltEwOdMS");
72    assert_line!(ssrc_line, "a=ssrc:3570614608 label:35429d94-5637-4686-9ecd-7d0622261ce8");
73    assert_line!(ssrc_line, "a=ssrc:2231627014 cname:4TOk42mSjXCkVIa6");
74    assert_line!(ssrc_line, "a=ssrc:2231627014 msid:lgsCFqt9kN2fVKw5wg3NKqGdATQoltEwOdMS daed9400-d0dd-4db3-b949-422499e96e2d");
75    assert_line!(ssrc_line, "a=ssrc:2231627014 mslabel:lgsCFqt9kN2fVKw5wg3NKqGdATQoltEwOdMS");
76    assert_line!(ssrc_line, "a=ssrc:2231627014 label:daed9400-d0dd-4db3-b949-422499e96e2d");
77    assert_line!(ssrc_line, "a=ssrc:632943048 cname:4TOk42mSjXCkVIa6");
78    assert_line!(ssrc_line, "a=ssrc:632943048 msid:lgsCFqt9kN2fVKw5wg3NKqGdATQoltEwOdMS daed9400-d0dd-4db3-b949-422499e96e2d");
79}
80
81#[derive(Clone, PartialEq, Eq)]
82#[cfg_attr(feature = "debug", derive(Debug))]
83#[cfg_attr(
84    feature = "serde",
85    derive(serde::Serialize, serde::Deserialize),
86    serde(rename_all = "camelCase")
87)]
88#[non_exhaustive]
89pub enum SsrcSemantic {
90    FID,
91    FEC,
92}
93
94#[derive(Clone, PartialEq, Eq)]
95#[cfg_attr(feature = "debug", derive(Debug))]
96#[cfg_attr(
97    feature = "serde",
98    derive(serde::Serialize, serde::Deserialize),
99    serde(rename_all = "camelCase")
100)]
101pub struct SsrcGroup {
102    pub semantic: SsrcSemantic,
103    pub ids: Vec<u32>,
104}
105
106pub fn ssrc_group_line(input: &str) -> IResult<&str, SsrcGroup> {
107    attribute("ssrc-group", ssrc_group)(input)
108}
109
110pub fn ssrc_group(input: &str) -> IResult<&str, SsrcGroup> {
111    map(
112        tuple((
113            alt((
114                // semantic
115                map(tag("FID"), |_| SsrcSemantic::FID),
116                map(tag("FEC"), |_| SsrcSemantic::FEC),
117            )),
118            wsf(read_as_numbers), // ids
119        )),
120        |(semantic, ids)| SsrcGroup { semantic, ids },
121    )(input)
122}
123
124#[test]
125#[rustfmt::skip]
126fn test_ssrc_group_line() {
127    assert_line_print!(ssrc_group_line, "a=ssrc-group:FID 2231627014 632943048");
128}
sdp_nom/attributes/ssrc.rs

sdp_nom/attributes/
ssrc.rs
