reifydb_codec/frame/
format.rs

1// SPDX-License-Identifier: Apache-2.0
2// Copyright (c) 2026 ReifyDB
3
4pub const RBCF_MAGIC: u32 = 0x46434252;
5
6pub const RBCF_VERSION: u16 = 1;
7
8pub const MESSAGE_HEADER_SIZE: usize = 16;
9
10pub const FRAME_HEADER_SIZE: usize = 12;
11
12pub const COLUMN_DESCRIPTOR_SIZE: usize = 28;
13
14pub const META_HAS_ROW_NUMBERS: u8 = 1 << 0;
15
16pub const META_HAS_CREATED_AT: u8 = 1 << 1;
17
18pub const META_HAS_UPDATED_AT: u8 = 1 << 2;
19
20pub const COL_FLAG_HAS_NONES: u8 = 1 << 0;
21
22#[derive(Debug, Clone, Copy, PartialEq, Eq)]
23#[repr(u8)]
24pub enum Encoding {
25	Plain = 0,
26
27	Dict = 1,
28
29	Rle = 2,
30
31	Delta = 3,
32
33	BitPack = 4,
34
35	DeltaRle = 5,
36}
37
38impl Encoding {
39	pub fn from_u8(v: u8) -> Option<Encoding> {
40		match v {
41			0 => Some(Encoding::Plain),
42			1 => Some(Encoding::Dict),
43			2 => Some(Encoding::Rle),
44			3 => Some(Encoding::Delta),
45			4 => Some(Encoding::BitPack),
46			5 => Some(Encoding::DeltaRle),
47			_ => None,
48		}
49	}
50}
51
52pub fn dict_index_width_from_flags(flags: u8) -> usize {
53	match (flags >> 4) & 0x03 {
54		0 => 1,
55		1 => 2,
56		2 => 4,
57		_ => 4,
58	}
59}
60
61pub fn dict_index_width_to_flags(width: usize) -> u8 {
62	match width {
63		1 => 0 << 4,
64		2 => 1 << 4,
65		4 => 2 << 4,
66		_ => 2 << 4,
67	}
68}
reifydb_codec/frame/format.rs

reifydb_codec/frame/
format.rs
