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//! `DescriptorTag` enum — typed descriptor tag byte values.
//!
//! Source: ETSI EN 300 468 §6.1 Table 12 plus MPEG-2 descriptors from
//! ISO/IEC 13818-1 when they appear inside PMT.
//!
//! Phase-1 of the crate populates this enum incrementally as descriptors land.
//! The enum is intentionally non-exhaustive so adding variants is a minor bump.
/// Typed descriptor tag.
///
/// Unknown or reserved tags are returned as
/// [`crate::descriptors::AnyDescriptor::Unknown`] during parse and should not
/// appear here.
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, num_enum::TryFromPrimitive)]
#[cfg_attr(feature = "serde", derive(serde::Serialize))]
#[non_exhaustive]
#[repr(u8)]
#[allow(missing_docs)]
#[rustfmt::skip] // deliberate column-aligned discriminants
pub enum DescriptorTag {
// ── MPEG-2 descriptors (0x02..=0x3F) ───────────────────────────────────
// Populated as phases 2+ land.
VideoStream = 0x02,
AudioStream = 0x03,
Hierarchy = 0x04,
Registration = 0x05,
DataStreamAlignment = 0x06,
TargetBackgroundGrid = 0x07,
VideoWindow = 0x08,
ConditionalAccess = 0x09,
Iso639Language = 0x0A,
SystemClock = 0x0B,
MultiplexBufferUtilization = 0x0C,
Copyright = 0x0D,
MaximumBitrate = 0x0E,
PrivateDataIndicator = 0x0F,
SmoothingBuffer = 0x10,
Std = 0x11,
Ibp = 0x12,
CarouselIdentifier = 0x13,
Mpeg4Video = 0x1B,
Mpeg4Audio = 0x1C,
Iod = 0x1D,
Sl = 0x1E,
Fmc = 0x1F,
ExternalEsId = 0x20,
Muxcode = 0x21,
FmxBufferSize = 0x22,
MultiplexBuffer = 0x23,
ContentLabeling = 0x24,
MetadataPointer = 0x25,
Metadata = 0x26,
MetadataStd = 0x27,
AvcVideo = 0x28,
AvcTimingAndHrd = 0x2A,
Mpeg2AacAudio = 0x2B,
FlexMuxTiming = 0x2C,
AuxiliaryVideoStream = 0x2F,
SvcExtension = 0x30,
MvcExtension = 0x31,
J2kVideo = 0x32,
HevcVideo = 0x38,
// ── DVB SI descriptors (0x40..=0x7F) ───────────────────────────────────
NetworkName = 0x40,
ServiceList = 0x41,
Stuffing = 0x42,
SatelliteDeliverySystem = 0x43,
CableDeliverySystem = 0x44,
VbiData = 0x45,
VbiTeletext = 0x46,
BouquetName = 0x47,
Service = 0x48,
CountryAvailability = 0x49,
Linkage = 0x4A,
NvodReference = 0x4B,
TimeShiftedService = 0x4C,
ShortEvent = 0x4D,
ExtendedEvent = 0x4E,
TimeShiftedEvent = 0x4F,
Component = 0x50,
Mosaic = 0x51,
StreamIdentifier = 0x52,
CaIdentifier = 0x53,
Content = 0x54,
ParentalRating = 0x55,
Teletext = 0x56,
Telephone = 0x57,
LocalTimeOffset = 0x58,
Subtitling = 0x59,
TerrestrialDeliverySystem = 0x5A,
MultilingualNetworkName = 0x5B,
MultilingualBouquetName = 0x5C,
MultilingualServiceName = 0x5D,
MultilingualComponent = 0x5E,
PrivateDataSpecifier = 0x5F,
ServiceMove = 0x60,
ShortSmoothingBuffer = 0x61,
FrequencyList = 0x62,
PartialTransportStream = 0x63,
DataBroadcast = 0x64,
Scrambling = 0x65,
DataBroadcastId = 0x66,
TransportStream = 0x67,
Dsng = 0x68,
Pdc = 0x69,
Ac3 = 0x6A,
AncillaryData = 0x6B,
CellList = 0x6C,
CellFrequencyLink = 0x6D,
AnnouncementSupport = 0x6E,
ApplicationSignalling = 0x6F,
AdaptationFieldData = 0x70,
ServiceIdentifier = 0x71,
ServiceAvailability = 0x72,
DefaultAuthority = 0x73,
RelatedContent = 0x74,
TvaId = 0x75,
ContentIdentifier = 0x76,
TimeSliceFecIdentifier = 0x77,
EcmRepetitionRate = 0x78,
S2SatelliteDeliverySystem = 0x79,
EnhancedAc3 = 0x7A,
Dts = 0x7B,
Aac = 0x7C,
XaitLocation = 0x7D,
FtaContentManagement = 0x7E,
Extension = 0x7F,
}
impl From<DescriptorTag> for u8 {
fn from(t: DescriptorTag) -> Self {
t as u8
}
}