Initial segmentation descriptor implementation
This commit is contained in:
parent
3ffcca82c0
commit
1f1ee312c0
GPG key ID:
3C86DBCE8E93C947
7 changed files with 825 additions and 74 deletions
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@ -13,8 +13,8 @@ crc = "3.0"
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thiserror = "1"
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serde = { version = "1", features = ["derive"], optional = true }
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hex = { version = "0.4", default-features = false, features = ["alloc"] }
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anyhow = "1"
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[dev-dependencies]
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serde_json = "1"
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anyhow = "1"
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assert-json-diff = "2"
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@ -14,6 +14,7 @@ pub trait SpliceCommand: TransportPacketWrite {
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}
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#[cfg_attr(feature = "serde", derive(Serialize))]
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#[derive(Debug, Clone, Copy, PartialEq)]
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pub struct SpliceNull {}
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impl SpliceNull {
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@ -23,7 +24,7 @@ impl SpliceNull {
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}
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impl TransportPacketWrite for SpliceNull {
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fn write_to<W>(&self, _: &mut W) -> Result<(), CueError>
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fn write_to<W>(&self, _: &mut W) -> anyhow::Result<()>
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where
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W: io::Write,
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{
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@ -53,7 +54,7 @@ impl TimeSignal {
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impl TransportPacketWrite for TimeSignal {
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#[inline]
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fn write_to<W>(&self, buffer: &mut W) -> Result<(), CueError>
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fn write_to<W>(&self, buffer: &mut W) -> anyhow::Result<()>
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where
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W: Write,
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{
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@ -67,8 +68,14 @@ impl SpliceCommand for TimeSignal {
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}
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}
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impl From<Duration> for TimeSignal {
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fn from(duration: Duration) -> Self {
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Self(duration.into())
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}
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}
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#[cfg_attr(feature = "serde", derive(Serialize))]
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#[derive(Debug, Clone, Copy)]
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#[derive(Debug, Clone, Copy, PartialEq)]
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pub enum SpliceCommandType {
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SpliceNull,
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SpliceSchedule,
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@ -18,22 +18,16 @@ pub enum SpliceDescriptor {
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Unknown(u8, u32, Vec<u8>),
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}
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impl SpliceDescriptor {
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fn splice_descriptor_tag(&self) -> u8 {
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use SpliceDescriptor::*;
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match self {
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Segmentation(_) => SpliceDescriptorTag::Segmentation.into(),
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Avail => SpliceDescriptorTag::Avail.into(),
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DTMF => SpliceDescriptorTag::DTMF.into(),
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Time => SpliceDescriptorTag::Time.into(),
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Audio => SpliceDescriptorTag::Audio.into(),
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Unknown(tag, _, _) => *tag,
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}
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pub(crate) trait SpliceDescriptorExt {
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fn splice_descriptor_tag(&self) -> u8;
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fn identifier(&self) -> u32 {
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0x43554549 // ASCII "CUEI"
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}
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}
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impl TransportPacketWrite for SpliceDescriptor {
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fn write_to<W>(&self, buffer: &mut W) -> Result<(), CueError>
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fn write_to<W>(&self, buffer: &mut W) -> anyhow::Result<()>
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where
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W: io::Write,
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{
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@ -1,49 +1,217 @@
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use crate::{CueError, TransportPacketWrite};
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use anyhow::Context;
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use bitstream_io::{BigEndian, BitWrite, BitWriter};
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use std::ffi::CStr;
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use std::fmt::{Display, Formatter};
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use std::io;
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use std::io::Write;
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use crate::descriptors::{SpliceDescriptorExt, SpliceDescriptorTag};
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#[cfg(feature = "serde")]
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use serde::Serialize;
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#[derive(Debug, Clone, PartialEq)]
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#[cfg_attr(feature = "serde", derive(Serialize))]
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pub struct SegmentationDescriptor {
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identifier: u32,
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segmentation_event_id: u32,
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segmentation_event_cancel_indicator: bool,
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program_segmentation: Vec<Component>,
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delivery_restricted: Option<DeliveryRestriction>,
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segmentation_duration: Option<u64>,
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program_segmentation_flag: bool,
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segmentation_duration_flag: bool,
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delivery_not_restricted_flag: bool,
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web_delivery_allowed_flag: bool,
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no_regional_blackout_flag: bool,
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archive_allowed_flag: bool,
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device_restrictions: DeviceRestrictions,
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components: Vec<Component>,
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segmentation_duration: u64,
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segmentation_upid: SegmentationUpid,
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segmentation_type: SegmentationType,
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segment_num: u8,
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segments_expected: u8,
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sub_segment_num: u8,
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sub_segments_expected: u8,
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}
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impl TransportPacketWrite for SegmentationDescriptor {
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fn write_to<W>(&self, buffer: &mut W) -> Result<(), CueError>
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fn write_to<W>(&self, buffer: &mut W) -> anyhow::Result<()>
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where
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W: io::Write,
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{
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todo!()
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use SegmentationFieldSyntax::*;
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let mut data = Vec::new();
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let mut internal_buffer = BitWriter::endian(&mut data, BigEndian);
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internal_buffer.write(32, self.identifier())?;
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internal_buffer.write(32, self.segmentation_event_id)?;
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internal_buffer.write_bit(self.segmentation_event_cancel_indicator)?;
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internal_buffer.write(7, 0x7f)?;
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if !self.segmentation_event_cancel_indicator {
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internal_buffer.write_bit(self.program_segmentation_flag)?;
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internal_buffer.write_bit(self.segmentation_duration_flag)?;
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internal_buffer.write_bit(self.delivery_not_restricted_flag)?;
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if !self.delivery_not_restricted_flag {
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internal_buffer.write_bit(self.web_delivery_allowed_flag)?;
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internal_buffer.write_bit(self.no_regional_blackout_flag)?;
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internal_buffer.write_bit(self.archive_allowed_flag)?;
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internal_buffer.write(2, self.device_restrictions as u8)?;
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} else {
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internal_buffer.write(5, 0x1f)?;
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}
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if !self.program_segmentation_flag {
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internal_buffer.write(8, self.components.len() as u8)?;
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for component in &self.components {
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component.write_to(&mut internal_buffer)?;
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}
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}
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if self.segmentation_duration_flag {
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internal_buffer.write(40, self.segmentation_duration)?;
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}
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internal_buffer.write(8, u8::from(self.segmentation_upid.segmentation_upid_type()))?;
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self.segmentation_upid.write_to(&mut internal_buffer)?;
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internal_buffer.write(8, self.segmentation_type.id())?;
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let s = self.segmentation_type.syntax();
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match s.segment_num {
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Fixed(n) => internal_buffer.write(8, n)?,
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NonZero | ZeroOrNonZero => internal_buffer.write(8, self.segment_num)?, // needs to check for non-zero
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NotUsed => internal_buffer.write(8, 0u8)?,
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}
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match s.segments_expected {
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Fixed(n) => internal_buffer.write(8, n)?,
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NonZero | ZeroOrNonZero => internal_buffer.write(8, self.segments_expected)?, // needs to check for non-zero
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NotUsed => internal_buffer.write(8, 0u8)?,
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}
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match s.sub_segment_num {
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Fixed(n) => internal_buffer.write(8, n)?,
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NonZero | ZeroOrNonZero => internal_buffer.write(8, self.sub_segment_num)?, // needs to check for non-zero
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NotUsed => {}
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}
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match s.sub_segments_expected {
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Fixed(n) => internal_buffer.write(8, n)?,
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NonZero | ZeroOrNonZero => internal_buffer.write(8, self.sub_segments_expected)?, // needs to check for non-zero
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NotUsed => {}
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}
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}
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internal_buffer.flush()?;
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let mut buffer = BitWriter::endian(buffer, BigEndian);
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buffer.write(8, self.splice_descriptor_tag())?;
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buffer.write(8, data.len() as u8)?;
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buffer.write_bytes(data.as_slice())?;
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Ok(())
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}
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}
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impl SpliceDescriptorExt for SegmentationDescriptor {
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fn splice_descriptor_tag(&self) -> u8 {
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SpliceDescriptorTag::Segmentation.into()
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}
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}
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#[derive(Debug, Clone, Copy, PartialEq)]
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#[cfg_attr(feature = "serde", derive(Serialize))]
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#[repr(u8)]
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enum DeviceRestrictions {
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/// This Segment is restricted for a class of devices defined by an out of band message that
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/// describes which devices are excluded.
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RestrictGroup0 = 0b00,
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/// This Segment is restricted for a class of devices defined by an out of band message that
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/// describes which devices are excluded.
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RestrictGroup1 = 0b01,
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/// This Segment is restricted for a class of devices defined by an out of band message that
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/// describes which devices are excluded.
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RestrictGroup2 = 0b10,
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/// This Segment has no device restrictions.
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None = 0b11,
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}
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#[derive(Debug, Clone, Copy, PartialEq)]
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#[non_exhaustive]
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pub enum SegmentationUpidType {
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NotUsed,
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UserDefinedDeprecated,
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ISCI,
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AdID,
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UMID,
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ISANDeprecated,
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ISAN,
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TID,
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AiringID,
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ADI,
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EIDR,
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ATSCContentIdentifier,
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MPU,
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MID,
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ADSInformation,
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URI,
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UUID,
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SCR,
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Reserved(u8),
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}
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impl From<SegmentationUpidType> for u8 {
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fn from(s: SegmentationUpidType) -> Self {
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use SegmentationUpidType::*;
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match s {
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NotUsed => 0x00,
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UserDefinedDeprecated => 0x01,
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ISCI => 0x02,
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AdID => 0x03,
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UMID => 0x04,
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ISANDeprecated => 0x05,
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ISAN => 0x06,
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TID => 0x07,
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AiringID => 0x08,
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ADI => 0x09,
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EIDR => 0x0A,
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ATSCContentIdentifier => 0x0B,
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MPU => 0x0C,
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MID => 0x0D,
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ADSInformation => 0x0E,
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URI => 0x0F,
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UUID => 0x10,
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SCR => 0x11,
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Reserved(x) => x,
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}
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}
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}
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impl Display for SegmentationUpidType {
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fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
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use SegmentationUpidType::*;
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match self {
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NotUsed => write!(f, "Not Used"),
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UserDefinedDeprecated => write!(f, "User Defined Deprecated"),
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ISCI => write!(f, "ISCI"),
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AdID => write!(f, "Ad-ID"),
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UMID => write!(f, "UMID"),
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ISANDeprecated => write!(f, "ISAN Deprecated"),
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ISAN => write!(f, "ISAN"),
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TID => write!(f, "TID"),
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AiringID => write!(f, "AiringID"),
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ADI => write!(f, "ADI"),
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EIDR => write!(f, "EIDR"),
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ATSCContentIdentifier => write!(f, "ATSC Content Identifier"),
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MPU => write!(f, "MPU()"),
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MID => write!(f, "MID()"),
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ADSInformation => write!(f, "ADS Information"),
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URI => write!(f, "URI"),
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UUID => write!(f, "UUID"),
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SCR => write!(f, "SCR"),
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Reserved(_) => write!(f, "Reserved"),
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}
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}
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}
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#[derive(Debug, Clone, PartialEq)]
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#[cfg_attr(feature = "serde", derive(Serialize))]
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struct DeliveryRestriction {
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web_delivery_allowed_flag: bool,
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no_regional_blackout_flag: bool,
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archive_allowed_flag: bool,
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device_restrictions: DeviceRestrictions,
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}
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#[derive(Debug, Clone, Copy, PartialEq)]
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#[cfg_attr(feature = "serde", derive(Serialize))]
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enum DeviceRestrictions {
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RestrictGroup0 = 0x00,
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RestrictGroup1 = 0x01,
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RestrictGroup2 = 0x10,
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None = 0x11,
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}
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enum SegmentationUpidType {
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#[non_exhaustive]
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pub enum SegmentationUpid {
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NotUsed,
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UserDefinedDeprecated,
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ISCI,
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@ -52,7 +220,7 @@ enum SegmentationUpidType {
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ISANDeprecated,
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ISAN,
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TID,
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TI,
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AiringID(u64),
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ADI,
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EIDR,
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ATSCContentIdentifier,
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@ -62,31 +230,71 @@ enum SegmentationUpidType {
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URI,
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UUID,
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SCR,
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Reserved,
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Reserved(u8),
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}
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#[derive(Debug, Clone, PartialEq)]
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#[cfg_attr(feature = "serde", derive(Serialize))]
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enum SegmentationUpid {
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NotUsed,
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UserDefinedDeprecated,
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ISCI,
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AdID,
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UMID,
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ISANDeprecated,
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ISAN,
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TID,
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TI,
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ADI,
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EIDR,
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ATSCContentIdentifier,
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MPU,
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MID,
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ADSInformation,
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URI,
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UUID,
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SCR,
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Reserved,
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impl SegmentationUpid {
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pub fn segmentation_upid_type(&self) -> SegmentationUpidType {
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use SegmentationUpid::*;
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match self {
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NotUsed => SegmentationUpidType::NotUsed,
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UserDefinedDeprecated => SegmentationUpidType::UserDefinedDeprecated,
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ISCI => SegmentationUpidType::ISCI,
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AdID => SegmentationUpidType::AdID,
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UMID => SegmentationUpidType::UMID,
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ISANDeprecated => SegmentationUpidType::ISANDeprecated,
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ISAN => SegmentationUpidType::ISAN,
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TID => SegmentationUpidType::TID,
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AiringID(_) => SegmentationUpidType::AiringID,
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ADI => SegmentationUpidType::ADI,
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EIDR => SegmentationUpidType::EIDR,
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ATSCContentIdentifier => SegmentationUpidType::ATSCContentIdentifier,
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MPU => SegmentationUpidType::MPU,
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MID => SegmentationUpidType::MID,
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ADSInformation => SegmentationUpidType::ADSInformation,
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URI => SegmentationUpidType::URI,
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UUID => SegmentationUpidType::UUID,
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SCR => SegmentationUpidType::SCR,
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Reserved(r) => SegmentationUpidType::Reserved(*r),
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}
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}
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fn write_to<W>(&self, out: &mut BitWriter<W, BigEndian>) -> io::Result<()>
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where
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W: io::Write,
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{
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use SegmentationUpid::*;
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let mut data = Vec::new();
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let mut buffer = BitWriter::endian(&mut data, BigEndian);
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match self {
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// URI(uri) => {
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// let raw_value = CStr::from_bytes_with_nul("https://link.com".as_bytes()).unwrap();
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// buffer.write_bytes(raw_value.to_bytes())?;
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// }
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AiringID(aid) => {
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// 8 bytes is 64 bits
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buffer.write(64, *aid)?;
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}
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_ => {}
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}
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buffer.flush()?;
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match self {
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// All variants with variable length use the same write logic
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UserDefinedDeprecated | URI | AiringID(_) => {
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out.write(8, data.len() as u8)?;
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out.write_bytes(data.as_slice())?;
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}
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_ => {
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out.write(8, 0x0)?;
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}
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}
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Ok(())
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}
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}
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#[derive(Debug, Clone, PartialEq)]
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@ -95,3 +303,533 @@ struct Component {
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component_tag: u8,
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pts_offset: u64,
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}
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impl Component {
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fn write_to<W>(&self, buffer: &mut BitWriter<W, BigEndian>) -> io::Result<()>
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where
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W: io::Write,
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{
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buffer.write(8, self.component_tag)?;
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buffer.write(7, 0x7f)?;
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buffer.write(33, self.pts_offset)
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}
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}
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#[derive(Debug, Copy, Clone, PartialEq)]
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#[cfg_attr(feature = "serde", derive(Serialize))]
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#[non_exhaustive]
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pub enum SegmentationType {
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NotIndicated,
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ContentIdentification,
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ProgramStart,
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ProgramEnd,
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ProgramEarlyTermination,
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ProgramBreakaway,
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ProgramResumption,
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ProgramRunoverPlanned,
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ProgramRunoverUnplanned,
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ProgramOverlapStart,
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ProgramBlackoutOverride,
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ProgramJoin,
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ChapterStart,
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ChapterEnd,
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BreakStart,
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BreakEnd,
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OpeningCreditStartDeprecated,
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OpeningCreditEndDeprecated,
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ClosingCreditStartDeprecated,
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ClosingCreditEndDeprecated,
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ProviderAdvertisementStart,
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ProviderAdvertisementEnd,
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DistributorAdvertisementStart,
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DistributorAdvertisementEnd,
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ProviderPlacementOpportunityStart,
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ProviderPlacementOpportunityEnd,
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DistributorPlacementOpportunityStart,
|
||||
DistributorPlacementOpportunityEnd,
|
||||
ProviderOverlayPlacementOpportunityStart,
|
||||
ProviderOverlayPlacementOpportunityEnd,
|
||||
DistributorOverlayPlacementOpportunityStart,
|
||||
DistributorOverlayPlacementOpportunityEnd,
|
||||
ProviderPromoStart,
|
||||
ProviderPromoEnd,
|
||||
DistributorPromoStart,
|
||||
DistributorPromoEnd,
|
||||
UnscheduledEventStart,
|
||||
UnscheduledEventEnd,
|
||||
AlternateContentOpportunityStart,
|
||||
AlternateContentOpportunityEnd,
|
||||
ProviderAdBlockStart,
|
||||
ProviderAdBlockEnd,
|
||||
DistributorAdBlockStart,
|
||||
DistributorAdBlockEnd,
|
||||
NetworkStart,
|
||||
NetworkEnd,
|
||||
}
|
||||
|
||||
impl SegmentationType {
|
||||
fn id(&self) -> u8 {
|
||||
use SegmentationType::*;
|
||||
match self {
|
||||
NotIndicated => 0x00,
|
||||
ContentIdentification => 0x01,
|
||||
ProgramStart => 0x10,
|
||||
ProgramEnd => 0x11,
|
||||
ProgramEarlyTermination => 0x12,
|
||||
ProgramBreakaway => 0x13,
|
||||
ProgramResumption => 0x14,
|
||||
ProgramRunoverPlanned => 0x15,
|
||||
ProgramRunoverUnplanned => 0x16,
|
||||
ProgramOverlapStart => 0x17,
|
||||
ProgramBlackoutOverride => 0x18,
|
||||
ProgramJoin => 0x19,
|
||||
ChapterStart => 0x20,
|
||||
ChapterEnd => 0x21,
|
||||
BreakStart => 0x22,
|
||||
BreakEnd => 0x23,
|
||||
OpeningCreditStartDeprecated => 0x24,
|
||||
OpeningCreditEndDeprecated => 0x25,
|
||||
ClosingCreditStartDeprecated => 0x26,
|
||||
ClosingCreditEndDeprecated => 0x27,
|
||||
ProviderAdvertisementStart => 0x30,
|
||||
ProviderAdvertisementEnd => 0x31,
|
||||
DistributorAdvertisementStart => 0x32,
|
||||
DistributorAdvertisementEnd => 0x33,
|
||||
ProviderPlacementOpportunityStart => 0x34,
|
||||
ProviderPlacementOpportunityEnd => 0x35,
|
||||
DistributorPlacementOpportunityStart => 0x36,
|
||||
DistributorPlacementOpportunityEnd => 0x37,
|
||||
ProviderOverlayPlacementOpportunityStart => 0x38,
|
||||
ProviderOverlayPlacementOpportunityEnd => 0x39,
|
||||
DistributorOverlayPlacementOpportunityStart => 0x3A,
|
||||
DistributorOverlayPlacementOpportunityEnd => 0x3B,
|
||||
ProviderPromoStart => 0x3C,
|
||||
ProviderPromoEnd => 0x3D,
|
||||
DistributorPromoStart => 0x3E,
|
||||
DistributorPromoEnd => 0x3F,
|
||||
UnscheduledEventStart => 0x40,
|
||||
UnscheduledEventEnd => 0x41,
|
||||
AlternateContentOpportunityStart => 0x42,
|
||||
AlternateContentOpportunityEnd => 0x43,
|
||||
ProviderAdBlockStart => 0x44,
|
||||
ProviderAdBlockEnd => 0x45,
|
||||
DistributorAdBlockStart => 0x46,
|
||||
DistributorAdBlockEnd => 0x47,
|
||||
NetworkStart => 0x50,
|
||||
NetworkEnd => 0x51,
|
||||
}
|
||||
}
|
||||
|
||||
/// Reflects definitions on the Table 23 of the spec.
|
||||
fn syntax(&self) -> SegmentationTypeSyntax {
|
||||
use SegmentationFieldSyntax::*;
|
||||
use SegmentationType::*;
|
||||
|
||||
match self {
|
||||
NotIndicated => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(0),
|
||||
segments_expected: Fixed(0),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ContentIdentification => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProgramStart => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProgramEnd => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProgramEarlyTermination => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProgramBreakaway => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProgramResumption => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProgramRunoverPlanned => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProgramRunoverUnplanned => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProgramOverlapStart => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProgramBlackoutOverride => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(0),
|
||||
segments_expected: Fixed(0),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProgramJoin => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ChapterStart => SegmentationTypeSyntax {
|
||||
segment_num: NonZero,
|
||||
segments_expected: NonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ChapterEnd => SegmentationTypeSyntax {
|
||||
segment_num: NonZero,
|
||||
segments_expected: NonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
BreakStart => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
BreakEnd => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
OpeningCreditStartDeprecated => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
OpeningCreditEndDeprecated => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ClosingCreditStartDeprecated => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ClosingCreditEndDeprecated => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(1),
|
||||
segments_expected: Fixed(1),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProviderAdvertisementStart => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProviderAdvertisementEnd => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
DistributorAdvertisementStart => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
DistributorAdvertisementEnd => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProviderPlacementOpportunityStart => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: ZeroOrNonZero,
|
||||
sub_segments_expected: ZeroOrNonZero,
|
||||
},
|
||||
ProviderPlacementOpportunityEnd => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
DistributorPlacementOpportunityStart => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: ZeroOrNonZero,
|
||||
sub_segments_expected: ZeroOrNonZero,
|
||||
},
|
||||
DistributorPlacementOpportunityEnd => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProviderOverlayPlacementOpportunityStart => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: ZeroOrNonZero,
|
||||
sub_segments_expected: ZeroOrNonZero,
|
||||
},
|
||||
ProviderOverlayPlacementOpportunityEnd => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
DistributorOverlayPlacementOpportunityStart => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: ZeroOrNonZero,
|
||||
sub_segments_expected: ZeroOrNonZero,
|
||||
},
|
||||
DistributorOverlayPlacementOpportunityEnd => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProviderPromoStart => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProviderPromoEnd => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
DistributorPromoStart => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
DistributorPromoEnd => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
UnscheduledEventStart => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(0),
|
||||
segments_expected: Fixed(0),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
UnscheduledEventEnd => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(0),
|
||||
segments_expected: Fixed(0),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
AlternateContentOpportunityStart => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
AlternateContentOpportunityEnd => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProviderAdBlockStart => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
ProviderAdBlockEnd => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
DistributorAdBlockStart => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
DistributorAdBlockEnd => SegmentationTypeSyntax {
|
||||
segment_num: ZeroOrNonZero,
|
||||
segments_expected: ZeroOrNonZero,
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
NetworkStart => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(0),
|
||||
segments_expected: Fixed(0),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
NetworkEnd => SegmentationTypeSyntax {
|
||||
segment_num: Fixed(0),
|
||||
segments_expected: Fixed(0),
|
||||
sub_segment_num: NotUsed,
|
||||
sub_segments_expected: NotUsed,
|
||||
},
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl TryFrom<u8> for SegmentationType {
|
||||
type Error = ();
|
||||
|
||||
fn try_from(value: u8) -> Result<Self, Self::Error> {
|
||||
use SegmentationType::*;
|
||||
match value {
|
||||
0x00 => Ok(NotIndicated),
|
||||
0x01 => Ok(ContentIdentification),
|
||||
0x10 => Ok(ProgramStart),
|
||||
0x11 => Ok(ProgramEnd),
|
||||
0x12 => Ok(ProgramEarlyTermination),
|
||||
0x13 => Ok(ProgramBreakaway),
|
||||
0x14 => Ok(ProgramResumption),
|
||||
0x15 => Ok(ProgramRunoverPlanned),
|
||||
0x16 => Ok(ProgramRunoverUnplanned),
|
||||
0x17 => Ok(ProgramOverlapStart),
|
||||
0x18 => Ok(ProgramBlackoutOverride),
|
||||
0x19 => Ok(ProgramJoin),
|
||||
0x20 => Ok(ChapterStart),
|
||||
0x21 => Ok(ChapterEnd),
|
||||
0x22 => Ok(BreakStart),
|
||||
0x23 => Ok(BreakEnd),
|
||||
0x24 => Ok(OpeningCreditStartDeprecated),
|
||||
0x25 => Ok(OpeningCreditEndDeprecated),
|
||||
0x26 => Ok(ClosingCreditStartDeprecated),
|
||||
0x27 => Ok(ClosingCreditEndDeprecated),
|
||||
0x30 => Ok(ProviderAdvertisementStart),
|
||||
0x31 => Ok(ProviderAdvertisementEnd),
|
||||
0x32 => Ok(DistributorAdvertisementStart),
|
||||
0x33 => Ok(DistributorAdvertisementEnd),
|
||||
0x34 => Ok(ProviderPlacementOpportunityStart),
|
||||
0x35 => Ok(ProviderPlacementOpportunityEnd),
|
||||
0x36 => Ok(DistributorPlacementOpportunityStart),
|
||||
0x37 => Ok(DistributorPlacementOpportunityEnd),
|
||||
0x38 => Ok(ProviderOverlayPlacementOpportunityStart),
|
||||
0x39 => Ok(ProviderOverlayPlacementOpportunityEnd),
|
||||
0x3A => Ok(DistributorOverlayPlacementOpportunityStart),
|
||||
0x3B => Ok(DistributorOverlayPlacementOpportunityEnd),
|
||||
0x3C => Ok(ProviderPromoStart),
|
||||
0x3D => Ok(ProviderPromoEnd),
|
||||
0x3E => Ok(DistributorPromoStart),
|
||||
0x3F => Ok(DistributorPromoEnd),
|
||||
0x40 => Ok(UnscheduledEventStart),
|
||||
0x41 => Ok(UnscheduledEventEnd),
|
||||
0x42 => Ok(AlternateContentOpportunityStart),
|
||||
0x43 => Ok(AlternateContentOpportunityEnd),
|
||||
0x44 => Ok(ProviderAdBlockStart),
|
||||
0x45 => Ok(ProviderAdBlockEnd),
|
||||
0x46 => Ok(DistributorAdBlockStart),
|
||||
0x47 => Ok(DistributorAdBlockEnd),
|
||||
0x50 => Ok(NetworkStart),
|
||||
0x51 => Ok(NetworkEnd),
|
||||
_ => Err(()),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
enum SegmentationFieldSyntax {
|
||||
Fixed(u8),
|
||||
ZeroOrNonZero,
|
||||
NonZero,
|
||||
NotUsed,
|
||||
}
|
||||
|
||||
struct SegmentationTypeSyntax {
|
||||
segment_num: SegmentationFieldSyntax,
|
||||
segments_expected: SegmentationFieldSyntax,
|
||||
sub_segment_num: SegmentationFieldSyntax,
|
||||
sub_segments_expected: SegmentationFieldSyntax,
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
use anyhow::Result;
|
||||
use std::time::Duration;
|
||||
|
||||
#[test]
|
||||
fn write_segmentation_upid_airing_id() -> Result<()> {
|
||||
let mut data = Vec::new();
|
||||
let mut buffer = BitWriter::endian(&mut data, BigEndian);
|
||||
|
||||
let segmentation_upid = SegmentationUpid::AiringID(0x2ca0a18a);
|
||||
segmentation_upid.write_to(&mut buffer)?;
|
||||
|
||||
// length (1 byte) + data (8 bytes)
|
||||
assert_eq!(data.len(), 9);
|
||||
|
||||
let hex = hex::encode(data[1..].to_vec());
|
||||
assert_eq!(hex, "000000002ca0a18a".to_string());
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn write_segmentation_descriptor() -> Result<()> {
|
||||
let mut data = Vec::new();
|
||||
let segmentation_descriptor = SegmentationDescriptor {
|
||||
segmentation_event_id: 0x4800008e,
|
||||
segmentation_event_cancel_indicator: false,
|
||||
program_segmentation_flag: true,
|
||||
segmentation_duration_flag: true,
|
||||
delivery_not_restricted_flag: false,
|
||||
web_delivery_allowed_flag: false,
|
||||
no_regional_blackout_flag: true,
|
||||
archive_allowed_flag: true,
|
||||
device_restrictions: DeviceRestrictions::None,
|
||||
components: vec![],
|
||||
segmentation_duration: 27630000,
|
||||
segmentation_upid: SegmentationUpid::AiringID(0x2ca0a18a),
|
||||
segmentation_type: SegmentationType::ProviderPlacementOpportunityStart,
|
||||
segment_num: 2,
|
||||
segments_expected: 0,
|
||||
sub_segment_num: 154,
|
||||
sub_segments_expected: 201,
|
||||
};
|
||||
segmentation_descriptor.write_to(&mut data)?;
|
||||
|
||||
let hex = hex::encode(data.as_slice());
|
||||
assert_eq!(
|
||||
hex,
|
||||
"021e435545494800008e7fcf0001a599b00808000000002ca0a18a3402009ac9".to_string()
|
||||
);
|
||||
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
|
|
|||
20
src/info.rs
20
src/info.rs
|
|
@ -1,9 +1,9 @@
|
|||
use std::fmt;
|
||||
use crate::commands::{SpliceCommand, SpliceCommandType};
|
||||
use crate::descriptors::SpliceDescriptor;
|
||||
use crate::{CueError, TransportPacketWrite};
|
||||
use bitstream_io::{BigEndian, BitWrite, BitWriter};
|
||||
use crc::{Crc, CRC_32_MPEG_2};
|
||||
use std::fmt;
|
||||
use std::fmt::{Display, Formatter};
|
||||
|
||||
pub const MPEG_2: Crc<u32> = Crc::<u32>::new(&CRC_32_MPEG_2);
|
||||
|
|
@ -106,6 +106,10 @@ where
|
|||
self.state.tier = tier;
|
||||
}
|
||||
|
||||
pub fn set_cw_index(&mut self, cw_index: u8) {
|
||||
self.state.cw_index = cw_index;
|
||||
}
|
||||
|
||||
pub fn add_descriptor(&mut self, descriptor: SpliceDescriptor) {
|
||||
self.state.descriptors.push(descriptor);
|
||||
}
|
||||
|
|
@ -127,7 +131,7 @@ impl<C> SpliceInfoSection<C, NotEncoded>
|
|||
where
|
||||
C: SpliceCommand,
|
||||
{
|
||||
pub fn into_encoded(self) -> Result<SpliceInfoSection<C, EncodedData>, CueError> {
|
||||
pub fn into_encoded(self) -> anyhow::Result<SpliceInfoSection<C, EncodedData>> {
|
||||
// Write splice command to a temporary buffer
|
||||
let mut splice_data = Vec::new();
|
||||
self.state.splice_command.write_to(&mut splice_data)?;
|
||||
|
|
@ -180,7 +184,7 @@ where
|
|||
if self.state.encrypted_packet {
|
||||
// TODO: alignment stuffing here, in case of DES encryption this needs to be 8 bytes aligned
|
||||
// encrypted_packet_crc32:
|
||||
buffer.write(32, 0)?;
|
||||
buffer.write(32, u32::MAX)?;
|
||||
}
|
||||
let crc32 = MPEG_2.checksum(data.as_slice());
|
||||
buffer.write(32, crc32)?;
|
||||
|
|
@ -369,6 +373,7 @@ mod tests {
|
|||
#[test]
|
||||
fn compliance_spec_14_1_example_time_signal_as_base64() -> Result<()> {
|
||||
let mut splice = SpliceInfoSection::new(TimeSignal::from_ticks(0x072bd0050));
|
||||
splice.set_cw_index(0xff);
|
||||
// splice.add_descriptor(SegmentationDescriptor::new().into());
|
||||
|
||||
assert_eq!(
|
||||
|
|
@ -382,12 +387,12 @@ mod tests {
|
|||
#[test]
|
||||
fn compliance_spec_14_1_example_time_signal_as_hex() -> Result<()> {
|
||||
let mut splice = SpliceInfoSection::new(TimeSignal::from_ticks(0x072bd0050));
|
||||
splice.set_cw_index(0xff);
|
||||
// splice.add_descriptor(SegmentationDescriptor::new().into());
|
||||
|
||||
// 0xFC3034000000000000FFFFF00506FE72BD0050001E021C435545494800008E7FCF0001A599B00808000000002CA0A18A3402009AC9D17E
|
||||
assert_eq!(
|
||||
splice.into_encoded()?.to_hex(),
|
||||
"0xfc301600000000000000fff005068072bd00500000e9dfc26c".to_string()
|
||||
"0xfc3034000000000000fffff00506fe72bd0050001e021c435545494800008e7fcf0001a599b00808000000002ca0a18a3402009ac9d17e".to_string()
|
||||
);
|
||||
Ok(())
|
||||
}
|
||||
|
|
@ -396,6 +401,7 @@ mod tests {
|
|||
#[test]
|
||||
fn compliance_spec_14_1_example_time_signal_as_json() -> Result<()> {
|
||||
let mut splice = SpliceInfoSection::new(TimeSignal::from_ticks(0x072bd0050));
|
||||
splice.set_cw_index(0xff);
|
||||
// splice.add_descriptor(SegmentationDescriptor::new().into());
|
||||
|
||||
assert_json_eq!(
|
||||
|
|
@ -410,7 +416,7 @@ mod tests {
|
|||
"encrypted_packet": false,
|
||||
"encryption_algorithm": 0,
|
||||
"pts_adjustment": 0.0,
|
||||
"cw_index": "0x0",
|
||||
"cw_index": "0xff",
|
||||
"tier": "0xfff",
|
||||
"splice_command_length": 5,
|
||||
"splice_command_type": 6,
|
||||
|
|
@ -421,7 +427,7 @@ mod tests {
|
|||
},
|
||||
"descriptor_loop_length": 0,
|
||||
"descriptors": [],
|
||||
"crc_32": "0xe9dfc26c"
|
||||
"crc_32": "0x2184b03d"
|
||||
})
|
||||
);
|
||||
|
||||
|
|
|
|||
|
|
@ -14,7 +14,7 @@ pub use commands::SpliceNull;
|
|||
pub use info::{EncryptionAlgorithm, SAPType, SpliceInfoSection};
|
||||
|
||||
pub trait TransportPacketWrite {
|
||||
fn write_to<W>(&self, buffer: &mut W) -> Result<(), CueError>
|
||||
fn write_to<W>(&self, buffer: &mut W) -> anyhow::Result<()>
|
||||
where
|
||||
W: io::Write;
|
||||
}
|
||||
|
|
|
|||
12
src/time.rs
12
src/time.rs
|
|
@ -42,18 +42,24 @@ impl SpliceTime {
|
|||
}
|
||||
|
||||
impl TransportPacketWrite for SpliceTime {
|
||||
fn write_to<W>(&self, buffer: &mut W) -> Result<(), CueError>
|
||||
fn write_to<W>(&self, buffer: &mut W) -> anyhow::Result<()>
|
||||
where
|
||||
W: io::Write,
|
||||
{
|
||||
let mut buffer = BitWriter::endian(buffer, BigEndian);
|
||||
buffer.write_bit(self.time_specified_flag)?;
|
||||
if self.time_specified_flag {
|
||||
buffer.write(6, 0x00)?;
|
||||
buffer.write(6, 0x3f)?;
|
||||
buffer.write(33, self.pts_time)?;
|
||||
} else {
|
||||
buffer.write(7, 0x00)?;
|
||||
buffer.write(7, 0x7f)?;
|
||||
}
|
||||
Ok(())
|
||||
}
|
||||
}
|
||||
|
||||
impl From<Duration> for SpliceTime {
|
||||
fn from(duration: Duration) -> Self {
|
||||
Self::from_ticks(duration.to_90k())
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue