arcly-stream 0.1.6

An open-extensible live-media streaming kernel: lock-free zero-copy frame fan-out, instant-start GOP cache, a pluggable multi-protocol ingestion layer (RTMP, RTSP, SRT, WHIP/WHEP shipped), and a feature-gated pure-Rust media plane (MPEG-TS/HLS/fMP4) — runtime, config, and metrics free.
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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131

//! Codec bitstream helpers — turning wire bytes into engine metadata and
//! [`MediaFrame`](crate::MediaFrame) classification.
//!
//! Gated behind the per-codec features (`codec-h264`, `codec-h265`, `codec-av1`,
//! `codec-vp9`, `codec-vvc`, `codec-aac`; `codec` = H.264 + AAC; `codecs-all` =
//! everything). Every parser is pure Rust with **no native dependencies**.
//!
//! All codecs share the [`CodecParser`] contract: extract [`VideoParams`] from a
//! config header, and classify random-access points so the kernel's GOP cache,
//! segmenter, eviction, and recorder — which key only on
//! [`MediaFrame::is_keyframe`](crate::MediaFrame::is_keyframe) — work unchanged.
//!
//! ```
//! # #[cfg(feature = "codec-h265")] {
//! use arcly_stream::codec::dispatch;
//! use arcly_stream::CodecId;
//!
//! let access_unit: &[u8] = &[/* … Annex-B HEVC bytes … */];
//! // Codec-erased dispatch by CodecId (used at the ingest boundary):
//! let is_rap = dispatch::is_random_access_point(CodecId::H265, access_unit);
//! # let _ = is_rap;
//! # }
//! ```

mod bitreader;
pub mod parser;

#[cfg(test)]
pub(crate) mod testutil;

pub use parser::{CodecConfig, CodecParser, VideoParams};

#[cfg(feature = "_nal")]
pub mod nal;

#[cfg(feature = "codec-h264")]
#[cfg_attr(docsrs, doc(cfg(feature = "codec-h264")))]
pub mod h264;

#[cfg(feature = "codec-h265")]
#[cfg_attr(docsrs, doc(cfg(feature = "codec-h265")))]
pub mod h265;

#[cfg(feature = "codec-vvc")]
#[cfg_attr(docsrs, doc(cfg(feature = "codec-vvc")))]
pub mod vvc;

#[cfg(feature = "codec-av1")]
#[cfg_attr(docsrs, doc(cfg(feature = "codec-av1")))]
pub mod av1;

#[cfg(feature = "codec-av1")]
pub(crate) mod obu;

#[cfg(feature = "codec-vp9")]
#[cfg_attr(docsrs, doc(cfg(feature = "codec-vp9")))]
pub mod vp9;

#[cfg(feature = "codec-aac")]
#[cfg_attr(docsrs, doc(cfg(feature = "codec-aac")))]
pub mod aac;

// ── Back-compat flat re-exports (pre-split public surface) ──────────────────
#[cfg(feature = "codec-aac")]
pub use aac::{parse_adts, AdtsHeader};
#[cfg(feature = "codec-h264")]
pub use h264::{annexb_to_avcc, avcc_to_annexb, iter_nals_annexb, parse_sps, SpsInfo};

/// Codec-erased dispatch over [`CodecId`](crate::CodecId).
///
/// Protocol handlers call these to classify an access unit without naming a
/// concrete parser. Each returns a conservative default (`false` / `None`) for a
/// codec whose feature is not enabled.
pub mod dispatch {
    use super::*;
    use crate::CodecId;

    /// Extract [`VideoParams`] from a config access unit for `codec`.
    #[allow(unused_variables)]
    pub fn parse_config(codec: CodecId, data: &[u8]) -> Option<VideoParams> {
        match codec {
            #[cfg(feature = "codec-h264")]
            CodecId::H264 => <h264::H264 as CodecParser>::parse_config(data),
            #[cfg(feature = "codec-h265")]
            CodecId::H265 => <h265::H265 as CodecParser>::parse_config(data),
            #[cfg(feature = "codec-vvc")]
            CodecId::VVC => <vvc::Vvc as CodecParser>::parse_config(data),
            #[cfg(feature = "codec-av1")]
            CodecId::AV1 => <av1::Av1 as CodecParser>::parse_config(data),
            #[cfg(feature = "codec-vp9")]
            CodecId::VP9 => <vp9::Vp9 as CodecParser>::parse_config(data),
            _ => None,
        }
    }

    /// Whether `data` is a random-access point under `codec`.
    #[allow(unused_variables)]
    pub fn is_random_access_point(codec: CodecId, data: &[u8]) -> bool {
        match codec {
            #[cfg(feature = "codec-h264")]
            CodecId::H264 => <h264::H264 as CodecParser>::is_random_access_point(data),
            #[cfg(feature = "codec-h265")]
            CodecId::H265 => <h265::H265 as CodecParser>::is_random_access_point(data),
            #[cfg(feature = "codec-vvc")]
            CodecId::VVC => <vvc::Vvc as CodecParser>::is_random_access_point(data),
            #[cfg(feature = "codec-av1")]
            CodecId::AV1 => <av1::Av1 as CodecParser>::is_random_access_point(data),
            #[cfg(feature = "codec-vp9")]
            CodecId::VP9 => <vp9::Vp9 as CodecParser>::is_random_access_point(data),
            _ => false,
        }
    }

    /// The HLS `CODECS` attribute for `codec` given parsed `params`.
    #[allow(unused_variables)]
    pub fn hls_codec_string(codec: CodecId, params: &VideoParams) -> Option<String> {
        match codec {
            #[cfg(feature = "codec-h264")]
            CodecId::H264 => Some(<h264::H264 as CodecParser>::hls_codec_string(params)),
            #[cfg(feature = "codec-h265")]
            CodecId::H265 => Some(<h265::H265 as CodecParser>::hls_codec_string(params)),
            #[cfg(feature = "codec-vvc")]
            CodecId::VVC => Some(<vvc::Vvc as CodecParser>::hls_codec_string(params)),
            #[cfg(feature = "codec-av1")]
            CodecId::AV1 => Some(<av1::Av1 as CodecParser>::hls_codec_string(params)),
            #[cfg(feature = "codec-vp9")]
            CodecId::VP9 => Some(<vp9::Vp9 as CodecParser>::hls_codec_string(params)),
            _ => None,
        }
    }
}