fbxcel/writer/v7400/binary/
footer.rs

1//! FBX footer.
2
3/// FBX footer padding length.
4#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
5pub enum FbxFooterPaddingLength {
6    /// Default (correct) value.
7    Default,
8    /// Forced specified value, which can be wrong.
9    Forced(u8),
10}
11
12impl Default for FbxFooterPaddingLength {
13    #[inline]
14    fn default() -> Self {
15        FbxFooterPaddingLength::Default
16    }
17}
18
19/// FBX 7.4 footer.
20#[derive(Default, Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
21pub struct FbxFooter<'a> {
22    /// Unknown (semirandom) 16-bytes data.
23    ///
24    /// This field is expected to have prescribed upper 4 bits, i.e. the field
25    /// is `fx bx ax 0x dx cx dx 6x bx 7x fx 8x 1x fx 2x 7x` if the FBX data is
26    /// exported from official SDK.
27    ///
28    /// Note that third party exporter will use completely random data.
29    pub unknown1: Option<&'a [u8; 16]>,
30    /// Padding length.
31    ///
32    /// Padding is `padding_len` `0`s.
33    /// `padding_len >= 0 && padding <= 15` should hold.
34    ///
35    /// Note that third party exporter will not use correct padding length.
36    pub padding_len: FbxFooterPaddingLength,
37    /// Unknown 4-bytes data.
38    ///
39    /// This is expected to be `[0u8; 4]`.
40    pub unknown2: Option<[u8; 4]>,
41    /// Unknown 16-bytes data.
42    ///
43    /// This is expected to be `[0xf8, 0x5a, 0x8c, 0x6a, 0xde, 0xf5, 0xd9, 0x7e,
44    /// 0xec, 0xe9, 0x0c, 0xe3, 0x75, 0x8f, 0x29, 0x0b]`.
45    pub unknown3: Option<&'a [u8; 16]>,
46}
47
48impl<'a> FbxFooter<'a> {
49    /// Returns the first unknown field or default.
50    #[inline]
51    #[must_use]
52    pub(crate) fn unknown1(&self) -> &'a [u8; 16] {
53        /// Default value.
54        const DEFAULT: [u8; 16] = [
55            0xf0, 0xb1, 0xa2, 0x03, 0xd4, 0xc5, 0xd6, 0x67, 0xb8, 0x79, 0xfa, 0x8b, 0x1c, 0xfd,
56            0x2e, 0x7f,
57        ];
58        self.unknown1.unwrap_or(&DEFAULT)
59    }
60
61    /// Returns the second unknown field or default.
62    #[inline]
63    #[must_use]
64    pub(crate) fn unknown2(&self) -> [u8; 4] {
65        /// Default value.
66        const DEFAULT: [u8; 4] = [0; 4];
67        self.unknown2.unwrap_or(DEFAULT)
68    }
69
70    /// Returns the third unknown field or default.
71    #[inline]
72    #[must_use]
73    pub(crate) fn unknown3(&self) -> &'a [u8; 16] {
74        /// Default value.
75        const DEFAULT: [u8; 16] = [
76            0xf8, 0x5a, 0x8c, 0x6a, 0xde, 0xf5, 0xd9, 0x7e, 0xec, 0xe9, 0x0c, 0xe3, 0x75, 0x8f,
77            0x29, 0x0b,
78        ];
79        self.unknown3.unwrap_or(&DEFAULT)
80    }
81}
fbxcel/writer/v7400/binary/footer.rs

fbxcel/writer/v7400/binary/
footer.rs
