flowly-mpegts 0.2.2

Mpeg2Ts format streaming parser
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52

use crate::Error;

use super::WritableLen;

#[derive(Debug, Clone)]
pub enum PidKind {
    Pmt,
    Pes,
}

/// Packet Identifier.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub struct Pid(pub(crate) u16);

impl Pid {
    /// Maximum PID value.
    pub const MAX: u16 = (1 << 13) - 1;

    /// PID of the Program Association Table (PAT) packet.
    pub const PAT: u16 = 0;

    /// PID of the null packet.
    pub const NULL: u16 = 0x1FFF;

    /// Makes a new `Pid` instance.
    ///
    /// # Errors
    ///
    /// If `pid` exceeds `Pid::MAX`, it will return an `ErrorKind::InvalidInput` error.
    pub fn new(pid: u16) -> Result<Self, Error> {
        assert!(pid <= Self::MAX, "Too large PID: {}", pid);

        Ok(Pid(pid))
    }

    /// Returns the value of the `Pid`.
    pub fn as_u16(&self) -> u16 {
        self.0
    }
}

impl From<u8> for Pid {
    fn from(f: u8) -> Self {
        Pid(u16::from(f))
    }
}

impl WritableLen for Pid {
    fn writable_len(&self) -> usize {
        2
    }
}