scuffle_flv/
file.rs

1//! FLV file processing
2
3use byteorder::{BigEndian, ReadBytesExt};
4use bytes::{Buf, Bytes};
5
6use super::header::FlvHeader;
7use super::tag::FlvTag;
8use crate::error::FlvError;
9
10/// An FLV file is a combination of a [`FlvHeader`] followed by the
11/// FLV File Body (which is a series of [`FlvTag`]s)
12///
13/// The FLV File Body is defined by:
14/// - Legacy FLV spec, Annex E.3
15#[derive(Debug, Clone, PartialEq)]
16pub struct FlvFile<'a> {
17    /// The header of the FLV file.
18    pub header: FlvHeader,
19    /// The tags in the FLV file.
20    pub tags: Vec<FlvTag<'a>>,
21}
22
23impl FlvFile<'_> {
24    /// Demux an FLV file from a reader.
25    ///
26    /// The reader needs to be a [`std::io::Cursor`] with a [`Bytes`] buffer because we
27    /// take advantage of zero-copy reading.
28    pub fn demux(reader: &mut std::io::Cursor<Bytes>) -> Result<Self, FlvError> {
29        let header = FlvHeader::demux(reader)?;
30
31        let mut tags = Vec::new();
32        while reader.has_remaining() {
33            // We don't care about the previous tag size, its only really used for seeking
34            // backwards.
35            reader.read_u32::<BigEndian>()?;
36
37            // If there is no more data, we can stop reading.
38            if !reader.has_remaining() {
39                break;
40            }
41
42            // Demux the tag from the reader.
43            let tag = FlvTag::demux(reader)?;
44            tags.push(tag);
45        }
46
47        Ok(FlvFile { header, tags })
48    }
49}
scuffle_flv/file.rs

scuffle_flv/
file.rs
