msf_sdp/
bandwidth.rs

1use std::{
2    convert::Infallible,
3    fmt::{self, Display, Formatter},
4    str::FromStr,
5};
6
7use str_reader::StringReader;
8
9use crate::ParseError;
10
11/// Bandwidth type.
12#[derive(Clone)]
13pub enum BandwidthType {
14    AS,
15    CT,
16    Other(String),
17}
18
19impl Display for BandwidthType {
20    #[inline]
21    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
22        let s = match self {
23            Self::AS => "AS",
24            Self::CT => "CT",
25            Self::Other(t) => t.as_str(),
26        };
27
28        f.write_str(s)
29    }
30}
31
32impl FromStr for BandwidthType {
33    type Err = Infallible;
34
35    fn from_str(s: &str) -> Result<Self, Self::Err> {
36        let res = match s {
37            "AS" => Self::AS,
38            "CT" => Self::CT,
39            _ => Self::Other(s.to_string()),
40        };
41
42        Ok(res)
43    }
44}
45
46/// Bandwidth field.
47#[derive(Clone)]
48pub struct Bandwidth {
49    bandwidth_type: BandwidthType,
50    bandwidth: u32,
51}
52
53impl Bandwidth {
54    /// Create a new bandwidth field with a given type and bandwidth.
55    #[inline]
56    pub fn new(bandwidth_type: BandwidthType, bandwidth: u32) -> Self {
57        Self {
58            bandwidth_type,
59            bandwidth,
60        }
61    }
62
63    /// Get the type of the bandwidth.
64    #[inline]
65    pub fn bandwidth_type(&self) -> &BandwidthType {
66        &self.bandwidth_type
67    }
68
69    /// Get the bandwidth.
70    #[inline]
71    pub fn bandwidth(&self) -> u32 {
72        self.bandwidth
73    }
74}
75
76impl Display for Bandwidth {
77    fn fmt(&self, f: &mut Formatter) -> fmt::Result {
78        write!(f, "{}:{}", self.bandwidth_type, self.bandwidth)
79    }
80}
81
82impl FromStr for Bandwidth {
83    type Err = ParseError;
84
85    fn from_str(s: &str) -> Result<Self, Self::Err> {
86        let mut reader = StringReader::new(s);
87
88        let bandwidth_type = reader.read_until(|c| c == ':').trim().parse()?;
89
90        reader.match_char(':')?;
91
92        let bandwidth = reader.read_u32()?;
93
94        reader.skip_whitespace();
95
96        if !reader.is_empty() {
97            return Err(ParseError::plain());
98        }
99
100        Ok(Self::new(bandwidth_type, bandwidth))
101    }
102}
msf_sdp/bandwidth.rs

msf_sdp/
bandwidth.rs
