mpeg2ps 0.1.1

MPEG2-PS decoding/encoding library for Rust.
Documentation 
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use crate::{ErrorKind, Result};
use std::fmt::Debug;
use trackable::track_assert;

/// Stream identifier.
#[derive(Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub struct StreamId(u8);

impl Debug for StreamId {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        write!(f, "StreamId(0X{:02X})", self.0)
    }
}

impl StreamId {
    /// Minimum value of the identifiers for audio streams.
    pub const AUDIO_MIN: u8 = 0xC0;

    /// Maximum value of the identifiers for audio streams.
    pub const AUDIO_MAX: u8 = 0xDF;

    /// Minimum value of the identifiers for video streams.
    pub const VIDEO_MIN: u8 = 0xE0;

    /// Maximum value of the identifiers for video streams.
    pub const VIDEO_MAX: u8 = 0xEF;

    /// Makes a new `StreamId` instance.
    pub fn new(id: u8) -> Self {
        StreamId(id)
    }

    /// Makes a new `StreamId` instance for audio stream.
    ///
    /// # Errors
    ///
    /// If `id` is not between `AUDIO_MIN` and `AUDIO_MAX`, it will return an `ErrorKind::InvalidInput` error.
    pub fn new_audio(id: u8) -> Result<Self> {
        track_assert!(
            (Self::AUDIO_MIN..=Self::AUDIO_MAX).contains(&id),
            ErrorKind::InvalidInput,
            "Not an audio ID: {}",
            id
        );
        Ok(StreamId(id))
    }

    /// Makes a new `StreamId` instance for video stream.
    ///
    /// # Errors
    ///
    /// If `id` is not between `VIDEO_MIN` and `VIDEO_MAX`, it will return an `ErrorKind::InvalidInput` error.
    pub fn new_video(id: u8) -> Result<Self> {
        track_assert!(
            (Self::VIDEO_MIN..=Self::VIDEO_MAX).contains(&id),
            ErrorKind::InvalidInput,
            "Not a video ID: {}",
            id
        );
        Ok(StreamId(id))
    }

    /// Returns the value of the identifier.
    pub fn as_u8(&self) -> u8 {
        self.0
    }

    /// Returns `true` if it is an audio identifier, otherwise `false`.
    pub fn is_audio(&self) -> bool {
        0xC0 <= self.0 && self.0 <= 0xDF
    }

    /// Returns `true` if it is a video identifier, otherwise `false`.
    pub fn is_video(&self) -> bool {
        0xE0 <= self.0 && self.0 <= 0xEF
    }
}