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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)]
#[rustfmt::skip] // deliberate column-aligned discriminants
pub enum DescriptorTag {
// ── MPEG-2 descriptors (0x02..=0x3F) ───────────────────────────────────
// Populated as phases 2+ land.
/// `VideoStream` (descriptor tag 0x02).
VideoStream = 0x02,
/// `AudioStream` (descriptor tag 0x03).
AudioStream = 0x03,
/// `Hierarchy` (descriptor tag 0x04).
Hierarchy = 0x04,
/// `Registration` (descriptor tag 0x05).
Registration = 0x05,
/// `DataStreamAlignment` (descriptor tag 0x06).
DataStreamAlignment = 0x06,
/// `TargetBackgroundGrid` (descriptor tag 0x07).
TargetBackgroundGrid = 0x07,
/// `VideoWindow` (descriptor tag 0x08).
VideoWindow = 0x08,
/// `ConditionalAccess` (descriptor tag 0x09).
ConditionalAccess = 0x09,
/// `Iso639Language` (descriptor tag 0x0A).
Iso639Language = 0x0A,
/// `SystemClock` (descriptor tag 0x0B).
SystemClock = 0x0B,
/// `MultiplexBufferUtilization` (descriptor tag 0x0C).
MultiplexBufferUtilization = 0x0C,
/// `Copyright` (descriptor tag 0x0D).
Copyright = 0x0D,
/// `MaximumBitrate` (descriptor tag 0x0E).
MaximumBitrate = 0x0E,
/// `PrivateDataIndicator` (descriptor tag 0x0F).
PrivateDataIndicator = 0x0F,
/// `SmoothingBuffer` (descriptor tag 0x10).
SmoothingBuffer = 0x10,
/// `Std` (descriptor tag 0x11).
Std = 0x11,
/// `Ibp` (descriptor tag 0x12).
Ibp = 0x12,
/// `CarouselIdentifier` (descriptor tag 0x13).
CarouselIdentifier = 0x13,
/// `AssociationTag` (descriptor tag 0x14).
AssociationTag = 0x14,
/// `DeferredAssociationTags` (descriptor tag 0x15).
DeferredAssociationTags = 0x15,
/// `Mpeg4Video` (descriptor tag 0x1B).
Mpeg4Video = 0x1B,
/// `Mpeg4Audio` (descriptor tag 0x1C).
Mpeg4Audio = 0x1C,
/// `Iod` (descriptor tag 0x1D).
Iod = 0x1D,
/// `Sl` (descriptor tag 0x1E).
Sl = 0x1E,
/// `Fmc` (descriptor tag 0x1F).
Fmc = 0x1F,
/// `ExternalEsId` (descriptor tag 0x20).
ExternalEsId = 0x20,
/// `Muxcode` (descriptor tag 0x21).
Muxcode = 0x21,
/// `FmxBufferSize` (descriptor tag 0x22).
FmxBufferSize = 0x22,
/// `MultiplexBuffer` (descriptor tag 0x23).
MultiplexBuffer = 0x23,
/// `ContentLabeling` (descriptor tag 0x24).
ContentLabeling = 0x24,
/// `MetadataPointer` (descriptor tag 0x25).
MetadataPointer = 0x25,
/// `Metadata` (descriptor tag 0x26).
Metadata = 0x26,
/// `MetadataStd` (descriptor tag 0x27).
MetadataStd = 0x27,
/// `AvcVideo` (descriptor tag 0x28).
AvcVideo = 0x28,
/// `AvcTimingAndHrd` (descriptor tag 0x2A).
AvcTimingAndHrd = 0x2A,
/// `Mpeg2AacAudio` (descriptor tag 0x2B).
Mpeg2AacAudio = 0x2B,
/// `FlexMuxTiming` (descriptor tag 0x2C).
FlexMuxTiming = 0x2C,
/// `Mpeg4Text` (descriptor tag 0x2D).
Mpeg4Text = 0x2D,
/// `Mpeg4AudioExtension` (descriptor tag 0x2E).
Mpeg4AudioExtension = 0x2E,
/// `AuxiliaryVideoStream` (descriptor tag 0x2F).
AuxiliaryVideoStream = 0x2F,
/// `SvcExtension` (descriptor tag 0x30).
SvcExtension = 0x30,
/// `MvcExtension` (descriptor tag 0x31).
MvcExtension = 0x31,
/// `J2kVideo` (descriptor tag 0x32).
J2kVideo = 0x32,
/// `MvcOperationPoint` (descriptor tag 0x33).
MvcOperationPoint = 0x33,
/// `Mpeg2StereoscopicVideoFormat` (descriptor tag 0x34).
Mpeg2StereoscopicVideoFormat = 0x34,
/// `StereoscopicProgramInfo` (descriptor tag 0x35).
StereoscopicProgramInfo = 0x35,
/// `StereoscopicVideoInfo` (descriptor tag 0x36).
StereoscopicVideoInfo = 0x36,
/// `TransportProfile` (descriptor tag 0x37).
TransportProfile = 0x37,
/// `HevcVideo` (descriptor tag 0x38).
HevcVideo = 0x38,
/// `VvcVideo` (descriptor tag 0x39).
VvcVideo = 0x39,
/// `EvcVideo` (descriptor tag 0x3A).
EvcVideo = 0x3A,
/// `Mpeg2Extension` (descriptor tag 0x3F).
Mpeg2Extension = 0x3F,
// ── DVB SI descriptors (0x40..=0x7F) ───────────────────────────────────
/// `NetworkName` (descriptor tag 0x40).
NetworkName = 0x40,
/// `ServiceList` (descriptor tag 0x41).
ServiceList = 0x41,
/// `Stuffing` (descriptor tag 0x42).
Stuffing = 0x42,
/// `SatelliteDeliverySystem` (descriptor tag 0x43).
SatelliteDeliverySystem = 0x43,
/// `CableDeliverySystem` (descriptor tag 0x44).
CableDeliverySystem = 0x44,
/// `VbiData` (descriptor tag 0x45).
VbiData = 0x45,
/// `VbiTeletext` (descriptor tag 0x46).
VbiTeletext = 0x46,
/// `BouquetName` (descriptor tag 0x47).
BouquetName = 0x47,
/// `Service` (descriptor tag 0x48).
Service = 0x48,
/// `CountryAvailability` (descriptor tag 0x49).
CountryAvailability = 0x49,
/// `Linkage` (descriptor tag 0x4A).
Linkage = 0x4A,
/// `NvodReference` (descriptor tag 0x4B).
NvodReference = 0x4B,
/// `TimeShiftedService` (descriptor tag 0x4C).
TimeShiftedService = 0x4C,
/// `ShortEvent` (descriptor tag 0x4D).
ShortEvent = 0x4D,
/// `ExtendedEvent` (descriptor tag 0x4E).
ExtendedEvent = 0x4E,
/// `TimeShiftedEvent` (descriptor tag 0x4F).
TimeShiftedEvent = 0x4F,
/// `Component` (descriptor tag 0x50).
Component = 0x50,
/// `Mosaic` (descriptor tag 0x51).
Mosaic = 0x51,
/// `StreamIdentifier` (descriptor tag 0x52).
StreamIdentifier = 0x52,
/// `CaIdentifier` (descriptor tag 0x53).
CaIdentifier = 0x53,
/// `Content` (descriptor tag 0x54).
Content = 0x54,
/// `ParentalRating` (descriptor tag 0x55).
ParentalRating = 0x55,
/// `Teletext` (descriptor tag 0x56).
Teletext = 0x56,
/// `Telephone` (descriptor tag 0x57).
Telephone = 0x57,
/// `LocalTimeOffset` (descriptor tag 0x58).
LocalTimeOffset = 0x58,
/// `Subtitling` (descriptor tag 0x59).
Subtitling = 0x59,
/// `TerrestrialDeliverySystem` (descriptor tag 0x5A).
TerrestrialDeliverySystem = 0x5A,
/// `MultilingualNetworkName` (descriptor tag 0x5B).
MultilingualNetworkName = 0x5B,
/// `MultilingualBouquetName` (descriptor tag 0x5C).
MultilingualBouquetName = 0x5C,
/// `MultilingualServiceName` (descriptor tag 0x5D).
MultilingualServiceName = 0x5D,
/// `MultilingualComponent` (descriptor tag 0x5E).
MultilingualComponent = 0x5E,
/// `PrivateDataSpecifier` (descriptor tag 0x5F).
PrivateDataSpecifier = 0x5F,
/// `ServiceMove` (descriptor tag 0x60).
ServiceMove = 0x60,
/// `ShortSmoothingBuffer` (descriptor tag 0x61).
ShortSmoothingBuffer = 0x61,
/// `FrequencyList` (descriptor tag 0x62).
FrequencyList = 0x62,
/// `PartialTransportStream` (descriptor tag 0x63).
PartialTransportStream = 0x63,
/// `DataBroadcast` (descriptor tag 0x64).
DataBroadcast = 0x64,
/// `Scrambling` (descriptor tag 0x65).
Scrambling = 0x65,
/// `DataBroadcastId` (descriptor tag 0x66).
DataBroadcastId = 0x66,
/// `TransportStream` (descriptor tag 0x67).
TransportStream = 0x67,
/// `Dsng` (descriptor tag 0x68).
Dsng = 0x68,
/// `Pdc` (descriptor tag 0x69).
Pdc = 0x69,
/// `Ac3` (descriptor tag 0x6A).
Ac3 = 0x6A,
/// `AncillaryData` (descriptor tag 0x6B).
AncillaryData = 0x6B,
/// `CellList` (descriptor tag 0x6C).
CellList = 0x6C,
/// `CellFrequencyLink` (descriptor tag 0x6D).
CellFrequencyLink = 0x6D,
/// `AnnouncementSupport` (descriptor tag 0x6E).
AnnouncementSupport = 0x6E,
/// `ApplicationSignalling` (descriptor tag 0x6F).
ApplicationSignalling = 0x6F,
/// `AdaptationFieldData` (descriptor tag 0x70).
AdaptationFieldData = 0x70,
/// `ServiceIdentifier` (descriptor tag 0x71).
ServiceIdentifier = 0x71,
/// `ServiceAvailability` (descriptor tag 0x72).
ServiceAvailability = 0x72,
/// `DefaultAuthority` (descriptor tag 0x73).
DefaultAuthority = 0x73,
/// `RelatedContent` (descriptor tag 0x74).
RelatedContent = 0x74,
/// `TvaId` (descriptor tag 0x75).
TvaId = 0x75,
/// `ContentIdentifier` (descriptor tag 0x76).
ContentIdentifier = 0x76,
/// `TimeSliceFecIdentifier` (descriptor tag 0x77).
TimeSliceFecIdentifier = 0x77,
/// `EcmRepetitionRate` (descriptor tag 0x78).
EcmRepetitionRate = 0x78,
/// `S2SatelliteDeliverySystem` (descriptor tag 0x79).
S2SatelliteDeliverySystem = 0x79,
/// `EnhancedAc3` (descriptor tag 0x7A).
EnhancedAc3 = 0x7A,
/// `Dts` (descriptor tag 0x7B).
Dts = 0x7B,
/// `Aac` (descriptor tag 0x7C).
Aac = 0x7C,
/// `XaitLocation` (descriptor tag 0x7D).
XaitLocation = 0x7D,
/// `FtaContentManagement` (descriptor tag 0x7E).
FtaContentManagement = 0x7E,
/// `Extension` (descriptor tag 0x7F).
Extension = 0x7F,
}
impl DescriptorTag {
/// Human-readable spec name.
#[must_use]
pub fn name(self) -> &'static str {
match self {
Self::VideoStream => "video_stream_descriptor",
Self::AudioStream => "audio_stream_descriptor",
Self::Hierarchy => "hierarchy_descriptor",
Self::Registration => "registration_descriptor",
Self::DataStreamAlignment => "data_stream_alignment_descriptor",
Self::TargetBackgroundGrid => "target_background_grid_descriptor",
Self::VideoWindow => "video_window_descriptor",
Self::ConditionalAccess => "CA_descriptor",
Self::Iso639Language => "ISO_639_language_descriptor",
Self::SystemClock => "system_clock_descriptor",
Self::MultiplexBufferUtilization => "multiplex_buffer_utilization_descriptor",
Self::Copyright => "copyright_descriptor",
Self::MaximumBitrate => "maximum_bitrate_descriptor",
Self::PrivateDataIndicator => "private_data_indicator_descriptor",
Self::SmoothingBuffer => "smoothing_buffer_descriptor",
Self::Std => "STD_descriptor",
Self::Ibp => "IBP_descriptor",
Self::CarouselIdentifier => "carousel_identifier_descriptor",
Self::AssociationTag => "association_tag_descriptor",
Self::DeferredAssociationTags => "deferred_association_tags_descriptor",
Self::Mpeg4Video => "MPEG-4_video_descriptor",
Self::Mpeg4Audio => "MPEG-4_audio_descriptor",
Self::Iod => "IOD_descriptor",
Self::Sl => "SL_descriptor",
Self::Fmc => "FMC_descriptor",
Self::ExternalEsId => "External_ES_ID_descriptor",
Self::Muxcode => "Muxcode_descriptor",
Self::FmxBufferSize => "FmxBufferSize_descriptor",
Self::MultiplexBuffer => "MultiplexBuffer_descriptor",
Self::ContentLabeling => "content_labeling_descriptor",
Self::MetadataPointer => "metadata_pointer_descriptor",
Self::Metadata => "metadata_descriptor",
Self::MetadataStd => "Metadata_STD_descriptor",
Self::AvcVideo => "AVC_video_descriptor",
Self::AvcTimingAndHrd => "AVC_timing_and_HRD_descriptor",
Self::Mpeg2AacAudio => "MPEG-2_AAC_audio_descriptor",
Self::FlexMuxTiming => "FlexMuxTiming_descriptor",
Self::Mpeg4Text => "MPEG-4_text_descriptor",
Self::Mpeg4AudioExtension => "MPEG-4_audio_extension_descriptor",
Self::AuxiliaryVideoStream => "Auxiliary_video_stream_descriptor",
Self::SvcExtension => "SVC_extension_descriptor",
Self::MvcExtension => "MVC_extension_descriptor",
Self::J2kVideo => "J2K_video_descriptor",
Self::MvcOperationPoint => "MVC_operation_point_descriptor",
Self::Mpeg2StereoscopicVideoFormat => "MPEG2_stereoscopic_video_format_descriptor",
Self::StereoscopicProgramInfo => "stereoscopic_program_info_descriptor",
Self::StereoscopicVideoInfo => "stereoscopic_video_info_descriptor",
Self::TransportProfile => "transport_profile_descriptor",
Self::HevcVideo => "HEVC_video_descriptor",
Self::VvcVideo => "VVC_video_descriptor",
Self::EvcVideo => "EVC_video_descriptor",
Self::Mpeg2Extension => "Extension_descriptor (ITU-T H.222.0 Table 2-45, tag 63)",
Self::NetworkName => "network_name_descriptor",
Self::ServiceList => "service_list_descriptor",
Self::Stuffing => "stuffing_descriptor",
Self::SatelliteDeliverySystem => "satellite_delivery_system_descriptor",
Self::CableDeliverySystem => "cable_delivery_system_descriptor",
Self::VbiData => "VBI_data_descriptor",
Self::VbiTeletext => "VBI_teletext_descriptor",
Self::BouquetName => "bouquet_name_descriptor",
Self::Service => "service_descriptor",
Self::CountryAvailability => "country_availability_descriptor",
Self::Linkage => "linkage_descriptor",
Self::NvodReference => "NVOD_reference_descriptor",
Self::TimeShiftedService => "time_shifted_service_descriptor",
Self::ShortEvent => "short_event_descriptor",
Self::ExtendedEvent => "extended_event_descriptor",
Self::TimeShiftedEvent => "time_shifted_event_descriptor",
Self::Component => "component_descriptor",
Self::Mosaic => "mosaic_descriptor",
Self::StreamIdentifier => "stream_identifier_descriptor",
Self::CaIdentifier => "CA_identifier_descriptor",
Self::Content => "content_descriptor",
Self::ParentalRating => "parental_rating_descriptor",
Self::Teletext => "teletext_descriptor",
Self::Telephone => "telephone_descriptor",
Self::LocalTimeOffset => "local_time_offset_descriptor",
Self::Subtitling => "subtitling_descriptor",
Self::TerrestrialDeliverySystem => "terrestrial_delivery_system_descriptor",
Self::MultilingualNetworkName => "multilingual_network_name_descriptor",
Self::MultilingualBouquetName => "multilingual_bouquet_name_descriptor",
Self::MultilingualServiceName => "multilingual_service_name_descriptor",
Self::MultilingualComponent => "multilingual_component_descriptor",
Self::PrivateDataSpecifier => "private_data_specifier_descriptor",
Self::ServiceMove => "service_move_descriptor",
Self::ShortSmoothingBuffer => "short_smoothing_buffer_descriptor",
Self::FrequencyList => "frequency_list_descriptor",
Self::PartialTransportStream => "partial_transport_stream_descriptor",
Self::DataBroadcast => "data_broadcast_descriptor",
Self::Scrambling => "scrambling_descriptor",
Self::DataBroadcastId => "data_broadcast_id_descriptor",
Self::TransportStream => "transport_stream_descriptor",
Self::Dsng => "DSNG_descriptor",
Self::Pdc => "PDC_descriptor",
Self::Ac3 => "AC-3_descriptor",
Self::AncillaryData => "ancillary_data_descriptor",
Self::CellList => "cell_list_descriptor",
Self::CellFrequencyLink => "cell_frequency_link_descriptor",
Self::AnnouncementSupport => "announcement_support_descriptor",
Self::ApplicationSignalling => "application_signalling_descriptor",
Self::AdaptationFieldData => "adaptation_field_data_descriptor",
Self::ServiceIdentifier => "service_identifier_descriptor",
Self::ServiceAvailability => "service_availability_descriptor",
Self::DefaultAuthority => "default_authority_descriptor",
Self::RelatedContent => "related_content_descriptor",
Self::TvaId => "TVA_id_descriptor",
Self::ContentIdentifier => "content_identifier_descriptor",
Self::TimeSliceFecIdentifier => "time_slice_fec_identifier_descriptor",
Self::EcmRepetitionRate => "ECM_repetition_rate_descriptor",
Self::S2SatelliteDeliverySystem => "S2_satellite_delivery_system_descriptor",
Self::EnhancedAc3 => "enhanced_AC-3_descriptor",
Self::Dts => "DTS_descriptor",
Self::Aac => "AAC_descriptor",
Self::XaitLocation => "XAIT_location_descriptor",
Self::FtaContentManagement => "FTA_content_management_descriptor",
Self::Extension => "extension_descriptor",
}
}
}
impl From<DescriptorTag> for u8 {
fn from(t: DescriptorTag) -> Self {
t as u8
}
}
broadcast_common::impl_spec_display!(DescriptorTag);