dvb-si 12.0.0

ETSI EN 300 468 DVB Service Information parser + builder. MPEG-2 PSI included.
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
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161

//! INT descriptor namespace — [`AnyIntDescriptor`] + [`parse_int_loop`].
//!
//! The IP/MAC Notification Table (ETSI EN 301 192 V1.7.1 §8.4) has its OWN
//! descriptor tag space for `0x00..=0x3F` (Table 19, clause 8.4.5.1): "MPEG
//! descriptors in the range 0x00 to 0x3F cannot be used in the INT", and those
//! tags "share a common descriptor name space with UNT descriptors". So
//! INT tag 0x06 is `target_smartcard_descriptor`, never SI/MPEG
//! `data_stream_alignment_descriptor` (issue #1285). Tags `0x40..=0xFF` "shall
//! have their standard semantics as defined in ETSI EN 300 468" (telephone
//! 0x57, private_data_specifier 0x5F, user private) and are dispatched through
//! [`AnyIntDescriptor::Si`].
//!
//! The list below is generated by `declare_scoped_namespace!` (one line per
//! tag, ascending); the loop wrapper [`IntDescriptorLoop`] is what the
//! `platform_descriptor_loop` / `target_descriptor_loop` /
//! `operational_descriptor_loop` of [`IntSection`](crate::tables::int::IntSection)
//! hold.
//!
//! ```
//! use dvb_si::descriptors::int::{parse_int_loop, AnyIntDescriptor};
//!
//! // target_serial_number (INT tag 0x08) then telephone-range SI tag 0x5F
//! // (private_data_specifier) then unknown INT tag 0x20.
//! let raw = [
//!     0x08, 0x02, 0xAB, 0xCD,
//!     0x5F, 0x04, 0x00, 0x00, 0x00, 0x28,
//!     0x20, 0x01, 0xFF,
//! ];
//! let items: Vec<_> = parse_int_loop(&raw).collect();
//! assert!(matches!(items[0].as_ref().unwrap(), AnyIntDescriptor::TargetSerialNumber(_)));
//! assert!(matches!(items[1].as_ref().unwrap(), AnyIntDescriptor::Si(_)));
//! assert!(matches!(items[2].as_ref().unwrap(), AnyIntDescriptor::Unknown { tag: 0x20, .. }));
//! ```

pub mod generic_stream_location;
pub mod isp_access_mode;
pub mod platform_name;
pub mod platform_provider_name;
pub mod stream_location;
pub mod target_ip_slash;
pub mod target_ip_source_slash;
pub mod target_ipv6_slash;
pub mod target_ipv6_source_slash;
pub mod target_mac_address_range;

pub use generic_stream_location::{
    GenericStreamSelector, IpMacGenericStreamLocationDescriptor, ModulationSystemType, PhyStreamId,
};
pub use isp_access_mode::{IspAccessMode, IspAccessModeDescriptor};
pub use platform_name::IpMacPlatformNameDescriptor;
pub use platform_provider_name::IpMacPlatformProviderNameDescriptor;
pub use stream_location::IpMacStreamLocationDescriptor;
pub use target_ip_slash::{Ipv4Slash, TargetIpSlashDescriptor};
pub use target_ip_source_slash::{Ipv4SourceDestSlash, TargetIpSourceSlashDescriptor};
pub use target_ipv6_slash::{Ipv6Slash, TargetIpv6SlashDescriptor};
pub use target_ipv6_source_slash::{Ipv6SourceDestSlash, TargetIpv6SourceSlashDescriptor};
pub use target_mac_address_range::{MacAddressRange, TargetMacAddressRangeDescriptor};

use crate::descriptors::scoped::declare_scoped_namespace;

declare_scoped_namespace! {'a;
    doc "Every crate-implemented INT descriptor (ETSI EN 301 192 Table 19), the SI fall-through for tags `0x40..=0xFF`, and `Unknown` for an unimplemented tag in the INT-owned `0x00..=0x3F` range.";
    enum AnyIntDescriptor, iter IntDescriptorIter, loop IntDescriptorLoop, parse parse_int_loop;
    @owned 0x00..=0x3F,
    TargetSmartcard = 0x06 => crate::descriptors::target::smartcard::TargetSmartcardDescriptor<'a>,
    TargetMacAddress = 0x07 => crate::descriptors::target::mac_address::TargetMacAddressDescriptor<'a>,
    TargetSerialNumber = 0x08 => crate::descriptors::target::serial_number::TargetSerialNumberDescriptor<'a>,
    TargetIpAddress = 0x09 => crate::descriptors::target::ip_address::TargetIpAddressDescriptor<'a>,
    TargetIpv6Address = 0x0A => crate::descriptors::target::ipv6_address::TargetIpv6AddressDescriptor<'a>,
    IpMacPlatformName = 0x0C => crate::descriptors::int::platform_name::IpMacPlatformNameDescriptor<'a>,
    IpMacPlatformProviderName = 0x0D => crate::descriptors::int::platform_provider_name::IpMacPlatformProviderNameDescriptor<'a>,
    TargetMacAddressRange = 0x0E => crate::descriptors::int::target_mac_address_range::TargetMacAddressRangeDescriptor<'a>,
    TargetIpSlash = 0x0F => crate::descriptors::int::target_ip_slash::TargetIpSlashDescriptor<'a>,
    TargetIpSourceSlash = 0x10 => crate::descriptors::int::target_ip_source_slash::TargetIpSourceSlashDescriptor<'a>,
    TargetIpv6Slash = 0x11 => crate::descriptors::int::target_ipv6_slash::TargetIpv6SlashDescriptor<'a>,
    TargetIpv6SourceSlash = 0x12 => crate::descriptors::int::target_ipv6_source_slash::TargetIpv6SourceSlashDescriptor<'a>,
    IpMacStreamLocation = 0x13 => crate::descriptors::int::stream_location::IpMacStreamLocationDescriptor<'a>,
    IspAccessMode = 0x14 => crate::descriptors::int::isp_access_mode::IspAccessModeDescriptor<'a>,
    IpMacGenericStreamLocation = 0x15 => crate::descriptors::int::generic_stream_location::IpMacGenericStreamLocationDescriptor<'a>,
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn dispatched_tags_are_the_table_19_set() {
        assert_eq!(
            AnyIntDescriptor::DISPATCHED_TAGS,
            &[
                0x06, 0x07, 0x08, 0x09, 0x0A, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14,
                0x15
            ]
        );
    }

    /// The #1285 bug: SI/MPEG tag 0x06 (data_stream_alignment), 0x09 (CA),
    /// 0x0A (ISO_639_language) must NOT be decoded in the INT namespace, and
    /// an MPEG tag with no INT meaning is `Unknown`, never SI.
    #[test]
    fn mpeg_range_is_not_decoded_as_si() {
        let raw = [
            0x09, 0x04, 0xFF, 0xFF, 0xFF, 0xFF, // INT target_IP_address (mask only)
            0x0B, 0x00, // SI system_clock tag, but INT-unassigned
            0x25, 0x01, 0xAA, // MPEG-range tag, never SI here
        ];
        let items: Vec<_> = parse_int_loop(&raw).collect();
        assert!(matches!(
            items[0].as_ref().unwrap(),
            AnyIntDescriptor::TargetIpAddress(_)
        ));
        assert!(matches!(
            items[1].as_ref().unwrap(),
            AnyIntDescriptor::Unknown { tag: 0x0B, .. }
        ));
        assert!(matches!(
            items[2].as_ref().unwrap(),
            AnyIntDescriptor::Unknown { tag: 0x25, .. }
        ));
    }

    #[test]
    fn si_range_falls_back_to_si_dispatch() {
        // telephone_descriptor (0x57) is an SI descriptor allowed in the INT.
        let raw = [0x57, 0x03, 0x00, 0x00, 0x00];
        let item = parse_int_loop(&raw).next().unwrap().unwrap();
        match item {
            AnyIntDescriptor::Si(d) => assert_eq!(d.name(), "TELEPHONE"),
            other => panic!("expected Si, got {other:?}"),
        }
    }

    #[test]
    fn loop_wrapper_iter_raw_and_truncation() {
        let raw = [0x14, 0x01, 0x01];
        let l = IntDescriptorLoop::new(&raw);
        assert_eq!(l.raw(), &raw[..]);
        assert!(matches!(
            l.iter().next().unwrap().unwrap(),
            AnyIntDescriptor::IspAccessMode(_)
        ));
        // truncated body: one Err then fused.
        let bad = [0x14, 0x05, 0x01];
        let mut it = parse_int_loop(&bad);
        assert!(it.next().unwrap().is_err());
        assert!(it.next().is_none());
    }

    #[cfg(feature = "serde")]
    #[test]
    fn serde_surfaces_typed_and_parse_errors() {
        let ok = IntDescriptorLoop::new(&[0x14, 0x01, 0x01]);
        let json = serde_json::to_string(&ok).unwrap();
        assert!(
            json.contains("ispAccessMode") && json.contains("Dialup"),
            "{json}"
        );
        let bad = IntDescriptorLoop::new(&[0x14, 0xFF]);
        assert!(serde_json::to_string(&bad).unwrap().contains("parseError"));
    }
}