musefs-format 1.2.0

On-the-fly audio metadata synthesis and byte-layout for musefs (FLAC/MP3/MP4/Ogg/WAV).
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

//! Bounds-checked fixed-width integer readers shared across the format parsers.
//! Each reads a big- or little-endian integer at `pos`, returning
//! [`FormatError::Malformed`] if the field runs past the end of `data`.

use crate::error::{FormatError, Result};

pub(crate) fn read_u32_be(data: &[u8], pos: usize) -> Result<u32> {
    let s = data.get(pos..pos + 4).ok_or(FormatError::Malformed)?;
    Ok(u32::from_be_bytes(s.try_into().unwrap()))
}

pub(crate) fn read_u64_be(data: &[u8], pos: usize) -> Result<u64> {
    let s = data.get(pos..pos + 8).ok_or(FormatError::Malformed)?;
    Ok(u64::from_be_bytes(s.try_into().unwrap()))
}

pub(crate) fn read_u32_le(data: &[u8], pos: usize) -> Result<u32> {
    let s = data.get(pos..pos + 4).ok_or(FormatError::Malformed)?;
    Ok(u32::from_le_bytes(s.try_into().unwrap()))
}