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https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
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net/ndi: add closed caption support
Closed caption support in NDI is described as a proposal in [1] & [2]. The proposal consists in encapsulating c608 or c708 closed caption in ADF packets and pushing them in an XML tag as part of NDI Metadata. This commit implements this proposal. [1]: http://www.sienna-tv.com/ndi/ndiclosedcaptions.html [2]: http://www.sienna-tv.com/ndi/ndiclosedcaptions608.html Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1320>
This commit is contained in:
François Laignel
parent
e83238b681
commit
9604dea90a
9 changed files with 1044 additions and 0 deletions
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@ -14,10 +14,15 @@ gst = { package = "gstreamer", git = "https://gitlab.freedesktop.org/gstreamer/g
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gst-base = { package = "gstreamer-base", git = "https://gitlab.freedesktop.org/gstreamer/gstreamer-rs" }
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gst-audio = { package = "gstreamer-audio", git = "https://gitlab.freedesktop.org/gstreamer/gstreamer-rs" }
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gst-video = { package = "gstreamer-video", git = "https://gitlab.freedesktop.org/gstreamer/gstreamer-rs" }
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anyhow = "1.0"
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byte-slice-cast = "1"
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byteorder = "1.0"
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data-encoding = "2.4.0"
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atomic_refcell = "0.1"
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libloading = "0.8"
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quick-xml = "0.30"
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smallvec = { version = "1.11", features = ["const_generics"] }
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thiserror = "1.0"
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[build-dependencies]
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gst-plugin-version-helper = { path = "../../version-helper" }
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@ -42,6 +42,57 @@ Feel free to contribute to this project. Some ways you can contribute are:
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* Testing with more hardware and software and reporting bugs
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* Doing pull requests.
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Closed Captions Support
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-----------------------
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Closed captions support is based on [1] & [2].
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This pipelines streams a test video with test subtitles from
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gst-plugins-rs/video/closedcaption. Run from the gst-plugins-rs root directory.
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```console
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# Audio/Video sink pipeline with closed captions (cc start around 0:00:14)
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$ gst-launch-1.0 \
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ndisinkcombiner name=ndicombiner ! ndisink ndi-name="My NDI source" \
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cccombiner name=cccombiner ! videoconvert ! video/x-raw,format=UYVY ! ndicombiner.video \
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videotestsrc is-live=true ! cccombiner. \
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filesrc location=video/closedcaption/tests/dn2018-1217.scc ! sccparse ! cccombiner.caption \
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audiotestsrc is-live=true volume=0.1 ! ndicombiner.audio
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# Discover all NDI sources on the network
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$ gst-device-monitor-1.0 -f Source/Network:application/x-ndi
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# Audio/Video source pipeline with closed caption overlay
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$ gst-launch-1.0 \
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ndisrc ndi-name="_REPLACE_WITH_SOURCE_NAME_" ! ndisrcdemux name=demux \
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demux.video ! queue ! cea608overlay ! videoconvert ! autovideosink \
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demux.audio ! queue ! audioconvert ! autoaudiosink
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# Variant 1: sink pipeline with c708 closed captions
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$ gst-launch-1.0 \
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ndisinkcombiner name=ndicombiner ! ndisink ndi-name="My NDI source" \
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cccombiner name=cccombiner ! videoconvert ! video/x-raw,format=UYVY ! ndicombiner.video \
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videotestsrc is-live=true ! cccombiner. \
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filesrc location=video/closedcaption/tests/dn2018-1217.scc ! sccparse ! ccconverter ! closedcaption/x-cea-708,format=cdp ! cccombiner.caption \
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audiotestsrc is-live=true volume=0.1 ! ndicombiner.audio
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# Variant 2: sink pipeline with c608 and c708 closed captions
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$ gst-launch-1.0 \
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ndisinkcombiner name=ndicombiner ! ndisink ndi-name="My NDI source" \
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cccombiner name=cccombiner_1 ! cccombiner name=cccombiner_2 ! videoconvert ! video/x-raw,format=UYVY ! ndicombiner.video \
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videotestsrc is-live=true ! cccombiner_1. \
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filesrc location=video/closedcaption/tests/dn2018-1217.scc ! sccparse ! tee name=cctee \
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cctee. ! ccconverter ! closedcaption/x-cea-608,format=raw ! cccombiner_1.caption \
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cctee. ! ccconverter ! closedcaption/x-cea-708,format=cdp ! cccombiner_2.caption \
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audiotestsrc is-live=true volume=0.1 ! ndicombiner.audio
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```
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[1]: http://www.sienna-tv.com/ndi/ndiclosedcaptions.html
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[2]: http://www.sienna-tv.com/ndi/ndiclosedcaptions608.html
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License
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-------
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This plugin is licensed under the MPL-2 - see the [LICENSE](LICENSE-MPL-2.0) file for details
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@ -25,6 +25,9 @@ mod ndisrc;
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mod ndisrcdemux;
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mod ndisrcmeta;
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mod ndi_cc_meta;
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mod video_anc;
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#[cfg(feature = "doc")]
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use gst::prelude::*;
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@ -403,6 +403,10 @@ impl SendInstance {
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NDIlib_send_send_audio_v3(self.0.as_ptr(), frame.as_ptr());
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}
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}
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pub fn send_metadata(&self, metadata: &MetadataFrame) {
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unsafe { NDIlib_send_send_metadata(self.0.as_ptr(), metadata.as_ptr()) }
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}
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}
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impl Drop for SendInstance {
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416
net/ndi/src/ndi_cc_meta.rs
Normal file
416
net/ndi/src/ndi_cc_meta.rs
Normal file
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@ -0,0 +1,416 @@
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//! NDI Closed Caption encoder and parser
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//!
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//! See:
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//!
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//! * http://www.sienna-tv.com/ndi/ndiclosedcaptions.html
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//! * http://www.sienna-tv.com/ndi/ndiclosedcaptions608.html
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use anyhow::{bail, Context, Result};
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use data_encoding::BASE64;
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use smallvec::SmallVec;
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use crate::video_anc;
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use crate::video_anc::VideoAncillaryAFD;
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const C608_TAG: &str = "C608";
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const C608_TAG_BYTES: &[u8] = C608_TAG.as_bytes();
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const C708_TAG: &str = "C708";
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const C708_TAG_BYTES: &[u8] = C708_TAG.as_bytes();
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const LINE_ATTR: &str = "line";
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const DEFAULT_LINE_VALUE: &str = "21";
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/// Video anc AFD content padded to 32bit alignment encoded in base64
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const NDI_CC_CONTENT_MAX_LEN: usize = (video_anc::VIDEO_ANC_AFD_MAX_LEN + 3) * 3 / 2;
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/// Video anc AFD padded to 32bit alignment encoded in base64
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/// + XML tags with brackets and end '/'
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const NDI_CC_MAX_LEN: usize = NDI_CC_CONTENT_MAX_LEN + 13;
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#[derive(thiserror::Error, Debug, Eq, PartialEq)]
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/// NDI Video Caption related Errors.
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pub enum NDIClosedCaptionError {
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#[error("Unsupported closed caption type {cc_type:?}")]
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UnsupportedCC {
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cc_type: gst_video::VideoCaptionType,
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},
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}
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impl NDIClosedCaptionError {
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pub fn is_unsupported_cc(&self) -> bool {
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matches!(self, Self::UnsupportedCC { .. })
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}
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}
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fn write_32bit_padded_base64<W>(writer: &mut quick_xml::writer::Writer<W>, data: &[u8])
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where
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W: std::io::Write,
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{
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use quick_xml::events::{BytesText, Event};
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use std::borrow::Cow;
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let mut buf = String::with_capacity(NDI_CC_CONTENT_MAX_LEN);
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let mut input = Cow::from(data);
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let alignment_rem = input.len() % 4;
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if alignment_rem != 0 {
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let owned = input.to_mut();
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let mut padding = 4 - alignment_rem;
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while padding != 0 {
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owned.push(0);
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padding -= 1;
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}
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}
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debug_assert_eq!(input.len() % 4, 0);
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buf.clear();
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BASE64.encode_append(&input, &mut buf);
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writer
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.write_event(Event::Text(BytesText::from_escaped(buf)))
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.unwrap();
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}
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/// Encodes the provided VideoCaptionMeta in an NDI closed caption metadata.
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pub fn encode_video_caption_meta(video_buf: &gst::BufferRef) -> Result<Option<String>> {
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use crate::video_anc::VideoAncillaryAFDEncoder;
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use quick_xml::events::{BytesEnd, BytesStart, Event};
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use quick_xml::writer::Writer;
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if video_buf.meta::<gst_video::VideoCaptionMeta>().is_none() {
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return Ok(None);
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}
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// Start with an initial capacity suitable to store one ndi cc metadata
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let mut writer = Writer::new(Vec::<u8>::with_capacity(NDI_CC_MAX_LEN));
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let cc_meta_iter = video_buf.iter_meta::<gst_video::VideoCaptionMeta>();
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for cc_meta in cc_meta_iter {
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if cc_meta.data().is_empty() {
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return Ok(None);
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}
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use gst_video::VideoCaptionType::*;
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match cc_meta.caption_type() {
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Cea608Raw => {
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let mut anc_afd = VideoAncillaryAFDEncoder::for_cea608_raw(21);
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anc_afd.push_data(cc_meta.data()).context("Cea608Raw")?;
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let mut elem = BytesStart::new(C608_TAG);
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elem.push_attribute((LINE_ATTR, DEFAULT_LINE_VALUE));
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writer.write_event(Event::Start(elem)).unwrap();
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write_32bit_padded_base64(&mut writer, anc_afd.terminate().as_slice());
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writer
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.write_event(Event::End(BytesEnd::new(C608_TAG)))
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.unwrap();
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}
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Cea608S3341a => {
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let mut anc_afd = VideoAncillaryAFDEncoder::for_cea608_s334_1a();
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anc_afd.push_data(cc_meta.data()).context("Cea608S3341a")?;
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let mut elem = BytesStart::new(C608_TAG);
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elem.push_attribute((LINE_ATTR, format!("{}", cc_meta.data()[0]).as_str()));
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writer.write_event(Event::Start(elem)).unwrap();
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write_32bit_padded_base64(&mut writer, anc_afd.terminate().as_slice());
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writer
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.write_event(Event::End(BytesEnd::new(C608_TAG)))
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.unwrap();
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}
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Cea708Cdp => {
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let mut anc_afd = VideoAncillaryAFDEncoder::for_cea708_cdp();
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anc_afd.push_data(cc_meta.data()).context("Cea708Cdp")?;
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writer
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.write_event(Event::Start(BytesStart::new(C708_TAG)))
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.unwrap();
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write_32bit_padded_base64(&mut writer, anc_afd.terminate().as_slice());
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writer
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.write_event(Event::End(BytesEnd::new(C708_TAG)))
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.unwrap();
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}
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other => bail!(NDIClosedCaptionError::UnsupportedCC { cc_type: other }),
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}
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}
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// # Safety
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// `writer` content is guaranteed to be a valid UTF-8 string since:
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// * It contains ASCII XML tags, ASCII XML attributes and base64 encoded content
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// * ASCII & base64 are subsets of UTF-8.
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unsafe {
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let ndi_cc_meta_b = writer.into_inner();
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let ndi_cc_meta = std::str::from_utf8_unchecked(&ndi_cc_meta_b);
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Ok(Some(ndi_cc_meta.into()))
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}
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}
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#[derive(Debug)]
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pub struct NDIClosedCaption {
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pub cc_type: gst_video::VideoCaptionType,
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pub data: VideoAncillaryAFD,
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}
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/// Parses the provided NDI metadata string, searching for
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/// an NDI closed caption metadata.
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pub fn parse_ndi_cc_meta(input: &str) -> Result<Vec<NDIClosedCaption>> {
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use crate::video_anc::VideoAncillaryAFDParser;
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use quick_xml::events::Event;
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use quick_xml::reader::Reader;
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let mut ndi_cc = Vec::new();
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let mut reader = Reader::from_str(input);
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reader.trim_text(true);
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let mut content = SmallVec::<[u8; NDI_CC_CONTENT_MAX_LEN]>::new();
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let mut buf = Vec::with_capacity(NDI_CC_MAX_LEN);
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loop {
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match reader.read_event_into(&mut buf)? {
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Event::Eof => break,
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Event::Start(_) => content.clear(),
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Event::Text(e) => content.extend(e.iter().copied()),
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Event::End(e) => match e.name().as_ref() {
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C608_TAG_BYTES => {
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let adf_packet = BASE64.decode(content.as_slice()).context(C608_TAG)?;
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let data =
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VideoAncillaryAFDParser::parse_for_cea608(&adf_packet).context(C608_TAG)?;
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ndi_cc.push(NDIClosedCaption {
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cc_type: gst_video::VideoCaptionType::Cea608S3341a,
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data,
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});
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}
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C708_TAG_BYTES => {
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let adf_packet = BASE64.decode(content.as_slice()).context(C708_TAG)?;
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let data =
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VideoAncillaryAFDParser::parse_for_cea708(&adf_packet).context(C708_TAG)?;
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ndi_cc.push(NDIClosedCaption {
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cc_type: gst_video::VideoCaptionType::Cea708Cdp,
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data,
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});
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}
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_ => (),
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},
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_ => {}
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}
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buf.clear();
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}
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Ok(ndi_cc)
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use gst_video::VideoCaptionType;
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#[test]
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fn encode_gst_meta_c608() {
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gst::init().unwrap();
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let mut buf = gst::Buffer::new();
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{
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let buf = buf.get_mut().unwrap();
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gst_video::VideoCaptionMeta::add(
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buf,
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VideoCaptionType::Cea608S3341a,
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&[0x80, 0x94, 0x2c],
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);
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}
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assert_eq!(
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encode_video_caption_meta(&buf).unwrap().unwrap(),
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"<C608 line=\"128\">AD///WFAoDYBlEsqYAAAAA==</C608>",
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);
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}
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#[test]
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fn encode_gst_meta_c708() {
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gst::init().unwrap();
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let mut buf = gst::Buffer::new();
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{
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let buf = buf.get_mut().unwrap();
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gst_video::VideoCaptionMeta::add(
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buf,
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VideoCaptionType::Cea708Cdp,
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&[
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0x96, 0x69, 0x55, 0x3f, 0x43, 0x00, 0x00, 0x72, 0xf8, 0xfc, 0x94, 0x2c, 0xf9,
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0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00,
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0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00,
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0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa,
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0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00,
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0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00,
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0xfa, 0x00, 0x00, 0x74, 0x00, 0x00, 0x1b,
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],
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);
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}
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assert_eq!(
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encode_video_caption_meta(&buf).unwrap().unwrap(),
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"<C708>AD///WFAZVpaaZVj9Q4AgCcn4vxlEsvmAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAnSAIAhutwA=</C708>",
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);
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}
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#[test]
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fn encode_gst_meta_c608_and_c708() {
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gst::init().unwrap();
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let mut buf = gst::Buffer::new();
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{
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let buf = buf.get_mut().unwrap();
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gst_video::VideoCaptionMeta::add(
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buf,
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VideoCaptionType::Cea608S3341a,
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&[0x80, 0x94, 0x2c],
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);
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gst_video::VideoCaptionMeta::add(
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buf,
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VideoCaptionType::Cea708Cdp,
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&[
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0x96, 0x69, 0x55, 0x3f, 0x43, 0x00, 0x00, 0x72, 0xf8, 0xfc, 0x94, 0x2c, 0xf9,
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0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00,
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0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00,
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0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa,
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0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00,
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0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00,
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0xfa, 0x00, 0x00, 0x74, 0x00, 0x00, 0x1b,
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],
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||||
);
|
||||
}
|
||||
|
||||
assert_eq!(
|
||||
encode_video_caption_meta(&buf).unwrap().unwrap(),
|
||||
"<C608 line=\"128\">AD///WFAoDYBlEsqYAAAAA==</C608><C708>AD///WFAZVpaaZVj9Q4AgCcn4vxlEsvmAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAnSAIAhutwA=</C708>",
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn encode_gst_meta_unsupported_cc() {
|
||||
gst::init().unwrap();
|
||||
|
||||
let mut buf = gst::Buffer::new();
|
||||
{
|
||||
let buf = buf.get_mut().unwrap();
|
||||
gst_video::VideoCaptionMeta::add(
|
||||
buf,
|
||||
VideoCaptionType::Cea708Raw,
|
||||
// Content doesn't matter here
|
||||
&[0x00, 0x01, 0x02, 0x03, 0x04, 0x05],
|
||||
);
|
||||
}
|
||||
|
||||
let err = encode_video_caption_meta(&buf)
|
||||
.unwrap_err()
|
||||
.downcast::<NDIClosedCaptionError>()
|
||||
.unwrap();
|
||||
assert_eq!(
|
||||
err,
|
||||
NDIClosedCaptionError::UnsupportedCC {
|
||||
cc_type: VideoCaptionType::Cea708Raw
|
||||
}
|
||||
);
|
||||
|
||||
assert!(err.is_unsupported_cc());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn encode_gst_meta_none() {
|
||||
gst::init().unwrap();
|
||||
|
||||
let buf = gst::Buffer::new();
|
||||
assert!(encode_video_caption_meta(&buf).unwrap().is_none());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_ndi_meta_c608() {
|
||||
let mut ndi_cc_list =
|
||||
parse_ndi_cc_meta("<C608 line=\"128\">AD///WFAoDYBlEsqYAAAAA==</C608>").unwrap();
|
||||
|
||||
let ndi_cc = ndi_cc_list.pop().unwrap();
|
||||
assert_eq!(ndi_cc.cc_type, VideoCaptionType::Cea608S3341a);
|
||||
assert_eq!(ndi_cc.data.as_slice(), [0x80, 0x94, 0x2c]);
|
||||
|
||||
assert!(ndi_cc_list.is_empty());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_ndi_meta_c708() {
|
||||
let mut ndi_cc_list = parse_ndi_cc_meta(
|
||||
"<C708>AD///WFAZVpaaZVj9Q4AgCcn4vxlEsvmAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAnSAIAhutwA=</C708>",
|
||||
)
|
||||
.unwrap();
|
||||
|
||||
let ndi_cc = ndi_cc_list.pop().unwrap();
|
||||
assert_eq!(ndi_cc.cc_type, VideoCaptionType::Cea708Cdp);
|
||||
assert_eq!(
|
||||
ndi_cc.data.as_slice(),
|
||||
[
|
||||
0x96, 0x69, 0x55, 0x3f, 0x43, 0x00, 0x00, 0x72, 0xf8, 0xfc, 0x94, 0x2c, 0xf9, 0x00,
|
||||
0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa,
|
||||
0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00,
|
||||
0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00,
|
||||
0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa,
|
||||
0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0x74, 0x00, 0x00,
|
||||
0x1b,
|
||||
]
|
||||
);
|
||||
|
||||
assert!(ndi_cc_list.is_empty());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_ndi_meta_c608_and_c708() {
|
||||
let ndi_cc_list = parse_ndi_cc_meta(
|
||||
"<C608 line=\"128\">AD///WFAoDYBlEsqYAAAAA==</C608><C708>AD///WFAZVpaaZVj9Q4AgCcn4vxlEsvmAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAvqAIAnSAIAhutwA=</C708>",
|
||||
)
|
||||
.unwrap();
|
||||
|
||||
let mut ndi_cc_iter = ndi_cc_list.iter();
|
||||
|
||||
let ndi_cc = ndi_cc_iter.next().unwrap();
|
||||
assert_eq!(ndi_cc.cc_type, VideoCaptionType::Cea608S3341a);
|
||||
assert_eq!(ndi_cc.data.as_slice(), [0x80, 0x94, 0x2c]);
|
||||
|
||||
let ndi_cc = ndi_cc_iter.next().unwrap();
|
||||
assert_eq!(ndi_cc.cc_type, VideoCaptionType::Cea708Cdp);
|
||||
assert_eq!(
|
||||
ndi_cc.data.as_slice(),
|
||||
[
|
||||
0x96, 0x69, 0x55, 0x3f, 0x43, 0x00, 0x00, 0x72, 0xf8, 0xfc, 0x94, 0x2c, 0xf9, 0x00,
|
||||
0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa,
|
||||
0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00,
|
||||
0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00,
|
||||
0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa,
|
||||
0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0x74, 0x00, 0x00,
|
||||
0x1b,
|
||||
]
|
||||
);
|
||||
|
||||
assert!(ndi_cc_iter.next().is_none());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_ndi_meta_tag_mismatch() {
|
||||
// Expecting </C608> found </C708>'
|
||||
let _ =
|
||||
parse_ndi_cc_meta("<C608 line=\"128\">AD///WFAoDYBlEsqYAAAAA==</C708>").unwrap_err();
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_ndi_meta_c608_deeper_failure() {
|
||||
// Caused by:
|
||||
// 0: Parsing anc data flags
|
||||
// 1: Not enough data'
|
||||
let _ = parse_ndi_cc_meta("<C608 line=\"128\">AAA=</C608>").unwrap_err();
|
||||
}
|
||||
}
|
||||
|
|
@ -11,6 +11,7 @@ use std::sync::Mutex;
|
|||
use gst::glib::once_cell::sync::Lazy;
|
||||
|
||||
use crate::ndi::SendInstance;
|
||||
use crate::ndi_cc_meta;
|
||||
|
||||
static DEFAULT_SENDER_NDI_NAME: Lazy<String> = Lazy::new(|| {
|
||||
format!(
|
||||
|
|
@ -303,6 +304,24 @@ impl BaseSinkImpl for NdiSink {
|
|||
.map(|time| (time.nseconds() / 100) as i64)
|
||||
.unwrap_or(crate::ndisys::NDIlib_send_timecode_synthesize);
|
||||
|
||||
match ndi_cc_meta::encode_video_caption_meta(buffer) {
|
||||
Ok(None) => (),
|
||||
Ok(Some(cc_data)) => {
|
||||
gst::trace!(CAT, "Sending cc meta with timecode {timecode}");
|
||||
let metadata_frame =
|
||||
crate::ndi::MetadataFrame::new(timecode, Some(cc_data.as_str()));
|
||||
state.send.send_metadata(&metadata_frame);
|
||||
}
|
||||
Err(err) => match err.downcast_ref::<ndi_cc_meta::NDIClosedCaptionError>() {
|
||||
Some(err) if err.is_unsupported_cc() => {
|
||||
gst::info!(CAT, "{err}");
|
||||
}
|
||||
_ => {
|
||||
gst::error!(CAT, "Failed to encode Video Caption meta: {err}");
|
||||
}
|
||||
},
|
||||
}
|
||||
|
||||
let frame = gst_video::VideoFrameRef::from_buffer_ref_readable(buffer, info)
|
||||
.map_err(|_| {
|
||||
gst::error!(CAT, imp: self, "Failed to map buffer");
|
||||
|
|
|
|||
|
|
@ -17,6 +17,7 @@ use atomic_refcell::AtomicRefCell;
|
|||
use gst::glib::once_cell::sync::Lazy;
|
||||
|
||||
use crate::ndi::*;
|
||||
use crate::ndi_cc_meta;
|
||||
use crate::ndisys;
|
||||
use crate::ndisys::*;
|
||||
use crate::TimestampMode;
|
||||
|
|
@ -744,6 +745,7 @@ impl Receiver {
|
|||
let mut first_audio_frame = true;
|
||||
let mut first_frame = true;
|
||||
let mut timer = time::Instant::now();
|
||||
let mut pending_ndi_cc = VecDeque::<ndi_cc_meta::NDIClosedCaption>::new();
|
||||
|
||||
// Capture until error or shutdown
|
||||
loop {
|
||||
|
|
@ -812,6 +814,16 @@ impl Receiver {
|
|||
first_video_frame = false;
|
||||
}
|
||||
}
|
||||
|
||||
if !pending_ndi_cc.is_empty() {
|
||||
if let Ok(Buffer::Video(ref mut buffer, _)) = buffer {
|
||||
let buf = buffer.get_mut().unwrap();
|
||||
for ndi_cc in pending_ndi_cc.drain(..) {
|
||||
gst_video::VideoCaptionMeta::add(buf, ndi_cc.cc_type, &ndi_cc.data);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
buffer
|
||||
}
|
||||
Ok(Some(Frame::Audio(frame))) => {
|
||||
|
|
@ -837,6 +849,13 @@ impl Receiver {
|
|||
(frame.timecode() as u64 * 100).nseconds(),
|
||||
metadata,
|
||||
);
|
||||
|
||||
match ndi_cc_meta::parse_ndi_cc_meta(metadata) {
|
||||
Ok(mut ndi_cc_list) => pending_ndi_cc.extend(ndi_cc_list.drain(..)),
|
||||
Err(err) => {
|
||||
gst::error!(CAT, obj: element, "Error parsing closed caption: {err}");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
continue;
|
||||
|
|
|
|||
|
|
@ -73,6 +73,8 @@ struct FFI {
|
|||
send_send_audio_v3: Symbol<
|
||||
fn(p_instance: NDIlib_send_instance_t, p_audio_data: *const NDIlib_audio_frame_v3_t),
|
||||
>,
|
||||
send_send_metadata:
|
||||
Symbol<fn(p_instance: NDIlib_send_instance_t, p_metadata: *const NDIlib_metadata_frame_t)>,
|
||||
}
|
||||
|
||||
pub type NDIlib_find_instance_t = *mut ::std::os::raw::c_void;
|
||||
|
|
@ -398,6 +400,7 @@ pub fn load() -> Result<(), glib::BoolError> {
|
|||
send_destroy: load_symbol!(NDIlib_send_destroy),
|
||||
send_send_video_v2: load_symbol!(NDIlib_send_send_video_v2),
|
||||
send_send_audio_v3: load_symbol!(NDIlib_send_send_audio_v3),
|
||||
send_send_metadata: load_symbol!(NDIlib_send_send_metadata),
|
||||
_library: library,
|
||||
};
|
||||
|
||||
|
|
@ -532,3 +535,10 @@ pub unsafe fn NDIlib_send_send_audio_v3(
|
|||
) {
|
||||
(FFI.get_unchecked().send_send_audio_v3)(p_instance, p_audio_data)
|
||||
}
|
||||
|
||||
pub unsafe fn NDIlib_send_send_metadata(
|
||||
p_instance: NDIlib_send_instance_t,
|
||||
p_metadata: *const NDIlib_metadata_frame_t,
|
||||
) {
|
||||
(FFI.get_unchecked().send_send_metadata)(p_instance, p_metadata)
|
||||
}
|
||||
|
|
|
|||
517
net/ndi/src/video_anc.rs
Normal file
517
net/ndi/src/video_anc.rs
Normal file
|
|
@ -0,0 +1,517 @@
|
|||
//! Video Ancillary Active Format Description (AFD) encoder and parser
|
||||
//! see SMPTE-291M
|
||||
|
||||
use anyhow::{bail, Context, Result};
|
||||
use smallvec::SmallVec;
|
||||
|
||||
#[derive(thiserror::Error, Debug, Eq, PartialEq)]
|
||||
/// Video Ancillary AFD related Errors.
|
||||
pub enum VideoAncillaryAFDError {
|
||||
#[error("Unexpected data count {found}. Expected: {expected}")]
|
||||
UnexpectedDataCount { found: u8, expected: u8 },
|
||||
|
||||
#[error("Not enough data")]
|
||||
NotEnoughData,
|
||||
|
||||
#[error("Unexpected data flags")]
|
||||
UnexpectedDataFlags,
|
||||
|
||||
#[error("Unexpected checksum {found}. Expected: {expected}")]
|
||||
WrongChecksum { found: u16, expected: u16 },
|
||||
|
||||
#[error("Unexpected did {found}. Expected: {expected}")]
|
||||
UnexpectedDID { found: u16, expected: u16 },
|
||||
}
|
||||
|
||||
const ANCILLARY_DATA_FLAGS: [u16; 3] = [0x000, 0x3ff, 0x3ff];
|
||||
const EIA_708_ANCILLARY_DID_16: u16 = 0x6101;
|
||||
const EIA_608_ANCILLARY_DID_16: u16 = 0x6102;
|
||||
|
||||
// Video anc AFD content:
|
||||
// ADF + DID/SDID + DATA COUNT + PAYLOAD + checksum:
|
||||
// 3 + 2 + 1 + 256 max + 1 = 263
|
||||
// Those are 10bit words, so we need 329 bytes max.
|
||||
pub const VIDEO_ANC_AFD_MAX_LEN: usize = 329;
|
||||
|
||||
pub type VideoAncillaryAFD = SmallVec<[u8; VIDEO_ANC_AFD_MAX_LEN]>;
|
||||
|
||||
fn with_afd_parity(val: u8) -> u16 {
|
||||
let p = (val.count_ones() % 2) as u16;
|
||||
(1 - p) << 9 | p << 8 | (val as u16)
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
/// Video Ancillary Active Format Description (AFD) Encoder
|
||||
pub struct VideoAncillaryAFDEncoder {
|
||||
data: VideoAncillaryAFD,
|
||||
offset: u8,
|
||||
checksum: u16,
|
||||
data_count: u8,
|
||||
expected_data_count: Option<u8>,
|
||||
}
|
||||
|
||||
impl VideoAncillaryAFDEncoder {
|
||||
pub fn for_cea608_raw(line: u8) -> Self {
|
||||
let mut this = Self::new(EIA_608_ANCILLARY_DID_16);
|
||||
this.expected_data_count = Some(3);
|
||||
this.push_data(&[line]).unwrap();
|
||||
|
||||
this
|
||||
}
|
||||
|
||||
pub fn for_cea608_s334_1a() -> Self {
|
||||
let mut this = Self::new(EIA_608_ANCILLARY_DID_16);
|
||||
this.expected_data_count = Some(3);
|
||||
|
||||
this
|
||||
}
|
||||
|
||||
pub fn for_cea708_cdp() -> Self {
|
||||
Self::new(EIA_708_ANCILLARY_DID_16)
|
||||
}
|
||||
|
||||
fn new(did16: u16) -> Self {
|
||||
let mut this = VideoAncillaryAFDEncoder {
|
||||
data: SmallVec::new(),
|
||||
offset: 0,
|
||||
checksum: 0,
|
||||
data_count: 0,
|
||||
expected_data_count: None,
|
||||
};
|
||||
|
||||
// Ancillary Data Flag, component AFD description
|
||||
this.push_raw_10bit_word(ANCILLARY_DATA_FLAGS[0]);
|
||||
this.push_raw_10bit_word(ANCILLARY_DATA_FLAGS[1]);
|
||||
this.push_raw_10bit_word(ANCILLARY_DATA_FLAGS[2]);
|
||||
|
||||
// did / sdid: not part of data count
|
||||
let did_sdid: [u8; 2] = did16.to_be_bytes();
|
||||
this.push_as_10bit_word(did_sdid[0]);
|
||||
this.push_as_10bit_word(did_sdid[1]);
|
||||
|
||||
// Reserved for data count
|
||||
this.push_raw_10bit_word(0x000);
|
||||
|
||||
this
|
||||
}
|
||||
|
||||
/// Pushes the provided `word` as a 10 bits value.
|
||||
///
|
||||
/// The 10bits lsb are pushed at current offset as is.
|
||||
fn push_raw_10bit_word(&mut self, word: u16) {
|
||||
debug_assert_eq!(word & 0xfc00, 0);
|
||||
let word = word & 0x3ff;
|
||||
|
||||
match self.offset {
|
||||
0 => {
|
||||
self.data.push((word >> 2) as u8);
|
||||
self.data.push((word << 6) as u8);
|
||||
self.offset = 2;
|
||||
}
|
||||
2 => {
|
||||
*self.data.last_mut().unwrap() |= (word >> 4) as u8;
|
||||
self.data.push((word << 4) as u8);
|
||||
self.offset = 4;
|
||||
}
|
||||
4 => {
|
||||
*self.data.last_mut().unwrap() |= (word >> 6) as u8;
|
||||
self.data.push((word << 2) as u8);
|
||||
self.offset = 6;
|
||||
}
|
||||
6 => {
|
||||
*self.data.last_mut().unwrap() |= (word >> 8) as u8;
|
||||
self.data.push(word as u8);
|
||||
self.offset = 0;
|
||||
}
|
||||
_ => unreachable!(),
|
||||
}
|
||||
}
|
||||
|
||||
/// Pushes the provided `value` as a 10 bits value.
|
||||
///
|
||||
/// The `value` is:
|
||||
///
|
||||
/// - prepended with the parity bits,
|
||||
/// - pushed at current buffer offset,
|
||||
/// - pushed to the checksum.
|
||||
fn push_as_10bit_word(&mut self, value: u8) {
|
||||
let pval = with_afd_parity(value);
|
||||
self.push_raw_10bit_word(pval);
|
||||
self.checksum += pval;
|
||||
}
|
||||
|
||||
/// Pushes the provided each item in `data` as a 10 bits value.
|
||||
///
|
||||
/// The `value` is:
|
||||
///
|
||||
/// - prepended with the parity bits,
|
||||
/// - pushed at current buffer offset,
|
||||
/// - pushed to the checksum.
|
||||
///
|
||||
/// The data count is incremented for each pushed value.
|
||||
/// If the expected data count is defined and data count exceeds it,
|
||||
/// `VideoAncillaryAFDError::UnexpectedDataCount` is returned.
|
||||
pub fn push_data(&mut self, data: &[u8]) -> Result<()> {
|
||||
for val in data {
|
||||
self.data_count += 1;
|
||||
if let Some(expected_data_count) = self.expected_data_count {
|
||||
if self.data_count > expected_data_count {
|
||||
bail!(VideoAncillaryAFDError::UnexpectedDataCount {
|
||||
found: self.data_count,
|
||||
expected: expected_data_count,
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
self.push_as_10bit_word(*val);
|
||||
}
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
/// Terminates and returns the Video Ancillary AFD buffer.
|
||||
pub fn terminate(mut self) -> VideoAncillaryAFD {
|
||||
// update data_count starting at idx 6, offset 2
|
||||
let data_count = with_afd_parity(self.data_count);
|
||||
self.data[6] |= (data_count >> 4) as u8;
|
||||
self.data[7] |= (data_count << 4) as u8;
|
||||
|
||||
self.checksum = (self.checksum + data_count) & 0x1ff;
|
||||
self.checksum |= (!(self.checksum >> 8)) << 9;
|
||||
self.checksum &= 0x3ff;
|
||||
|
||||
self.push_raw_10bit_word(self.checksum);
|
||||
|
||||
self.data
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
/// Video Ancillary Active Format Description (AFD) Parser
|
||||
pub struct VideoAncillaryAFDParser<'a> {
|
||||
input: &'a [u8],
|
||||
data: VideoAncillaryAFD,
|
||||
did: u16,
|
||||
idx: usize,
|
||||
offset: u8,
|
||||
checksum: u16,
|
||||
data_count: u8,
|
||||
}
|
||||
|
||||
impl<'a> VideoAncillaryAFDParser<'a> {
|
||||
pub fn parse_for_cea608(input: &'a [u8]) -> Result<VideoAncillaryAFD> {
|
||||
let this = Self::parse(input)?;
|
||||
|
||||
if this.did != EIA_608_ANCILLARY_DID_16 {
|
||||
bail!(VideoAncillaryAFDError::UnexpectedDID {
|
||||
found: this.did,
|
||||
expected: EIA_608_ANCILLARY_DID_16,
|
||||
});
|
||||
}
|
||||
|
||||
if this.data_count != 3 {
|
||||
bail!(VideoAncillaryAFDError::UnexpectedDataCount {
|
||||
found: this.data_count,
|
||||
expected: 3,
|
||||
});
|
||||
}
|
||||
|
||||
Ok(this.data)
|
||||
}
|
||||
|
||||
pub fn parse_for_cea708(input: &'a [u8]) -> Result<VideoAncillaryAFD> {
|
||||
let this = Self::parse(input)?;
|
||||
|
||||
if this.did != EIA_708_ANCILLARY_DID_16 {
|
||||
bail!(VideoAncillaryAFDError::UnexpectedDID {
|
||||
found: this.did,
|
||||
expected: EIA_708_ANCILLARY_DID_16,
|
||||
});
|
||||
}
|
||||
|
||||
Ok(this.data)
|
||||
}
|
||||
|
||||
fn parse(input: &'a [u8]) -> Result<Self> {
|
||||
let mut this = VideoAncillaryAFDParser {
|
||||
input,
|
||||
data: SmallVec::new(),
|
||||
did: 0,
|
||||
idx: 0,
|
||||
offset: 0,
|
||||
checksum: 0,
|
||||
data_count: 0,
|
||||
};
|
||||
|
||||
let mut anc_data_flags = [0u16; 3];
|
||||
anc_data_flags[0] = this
|
||||
.pull_raw_10bit_word()
|
||||
.context("Parsing anc data flags")?;
|
||||
anc_data_flags[1] = this
|
||||
.pull_raw_10bit_word()
|
||||
.context("Parsing anc data flags")?;
|
||||
anc_data_flags[2] = this
|
||||
.pull_raw_10bit_word()
|
||||
.context("Parsing anc data flags")?;
|
||||
|
||||
if anc_data_flags != ANCILLARY_DATA_FLAGS {
|
||||
bail!(VideoAncillaryAFDError::UnexpectedDataFlags);
|
||||
}
|
||||
|
||||
let did = this.pull_from_10bit_word().context("Parsing did")?;
|
||||
let sdid = this.pull_from_10bit_word().context("Parsing sdid")?;
|
||||
this.did = u16::from_be_bytes([did, sdid]);
|
||||
|
||||
let data_count = this.pull_from_10bit_word().context("Parsing data_count")?;
|
||||
|
||||
for _ in 0..data_count {
|
||||
let val = this.pull_from_10bit_word().context("Parsing data")?;
|
||||
this.data.push(val);
|
||||
}
|
||||
|
||||
this.data_count = data_count;
|
||||
|
||||
let found_checksum = this.pull_raw_10bit_word().context("Parsing checksum")?;
|
||||
|
||||
this.checksum &= 0x1ff;
|
||||
this.checksum |= (!(this.checksum >> 8)) << 9;
|
||||
this.checksum &= 0x3ff;
|
||||
|
||||
if this.checksum != found_checksum {
|
||||
bail!(VideoAncillaryAFDError::WrongChecksum {
|
||||
found: found_checksum,
|
||||
expected: this.checksum
|
||||
});
|
||||
}
|
||||
|
||||
Ok(this)
|
||||
}
|
||||
|
||||
fn pull_raw_10bit_word(&mut self) -> Result<u16> {
|
||||
if self.input.len() <= self.idx + 1 {
|
||||
bail!(VideoAncillaryAFDError::NotEnoughData);
|
||||
}
|
||||
|
||||
let word;
|
||||
let msb = self.input[self.idx] as u16;
|
||||
self.idx += 1;
|
||||
let lsb = self.input[self.idx] as u16;
|
||||
|
||||
match self.offset {
|
||||
0 => {
|
||||
word = (msb << 2) | (lsb >> 6);
|
||||
self.offset = 2;
|
||||
}
|
||||
2 => {
|
||||
word = ((msb & 0x3f) << 4) | (lsb >> 4);
|
||||
self.offset = 4;
|
||||
}
|
||||
4 => {
|
||||
word = ((msb & 0x0f) << 6) | (lsb >> 2);
|
||||
self.offset = 6;
|
||||
}
|
||||
6 => {
|
||||
word = ((msb & 0x03) << 8) | lsb;
|
||||
self.idx += 1;
|
||||
self.offset = 0;
|
||||
}
|
||||
_ => unreachable!(),
|
||||
}
|
||||
|
||||
Ok(word)
|
||||
}
|
||||
|
||||
/// Pulls a 8bit value from next 10bit word.
|
||||
///
|
||||
/// Also checks parity and adds to checksum.
|
||||
fn pull_from_10bit_word(&mut self) -> Result<u8> {
|
||||
let word = self.pull_raw_10bit_word()?;
|
||||
let val = (word & 0xff) as u8;
|
||||
|
||||
// Don't check parity: we will rely on the checksum for integrity
|
||||
|
||||
self.checksum += word;
|
||||
|
||||
Ok(val)
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
use super::*;
|
||||
|
||||
#[test]
|
||||
fn afd_encode_cea608_raw() {
|
||||
let mut anc_afd = VideoAncillaryAFDEncoder::for_cea608_raw(21);
|
||||
anc_afd.push_data(&[0x94, 0x2c]).unwrap();
|
||||
let buf = anc_afd.terminate();
|
||||
assert_eq!(
|
||||
buf.as_slice(),
|
||||
[0x00, 0x3f, 0xff, 0xfd, 0x61, 0x40, 0xa0, 0x34, 0x55, 0x94, 0x4b, 0x23, 0xb0]
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn afd_encode_cea608_s334_1a() {
|
||||
let mut anc_afd = VideoAncillaryAFDEncoder::for_cea608_s334_1a();
|
||||
anc_afd.push_data(&[0x80, 0x94, 0x2c]).unwrap();
|
||||
let buf = anc_afd.terminate();
|
||||
assert_eq!(
|
||||
buf.as_slice(),
|
||||
[0x00, 0x3f, 0xff, 0xfd, 0x61, 0x40, 0xa0, 0x36, 0x01, 0x94, 0x4b, 0x2a, 0x60]
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn afd_encode_cea608_s334_1a_data_count_exceeded() {
|
||||
let mut anc_afd = VideoAncillaryAFDEncoder::for_cea608_s334_1a();
|
||||
assert_eq!(
|
||||
anc_afd
|
||||
.push_data(&[0x80, 0x94, 0x2c, 0xab])
|
||||
.unwrap_err()
|
||||
.downcast::<VideoAncillaryAFDError>()
|
||||
.unwrap(),
|
||||
VideoAncillaryAFDError::UnexpectedDataCount {
|
||||
expected: 3,
|
||||
found: 4
|
||||
},
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn afd_encode_cea708_cdp() {
|
||||
let mut anc_afd = VideoAncillaryAFDEncoder::for_cea708_cdp();
|
||||
anc_afd
|
||||
.push_data(&[
|
||||
0x96, 0x69, 0x55, 0x3f, 0x43, 0x00, 0x00, 0x72, 0xf8, 0xfc, 0x94, 0x2c, 0xf9, 0x00,
|
||||
0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa,
|
||||
0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00,
|
||||
0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00,
|
||||
0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa,
|
||||
0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0x74, 0x00, 0x00,
|
||||
0x1b,
|
||||
])
|
||||
.unwrap();
|
||||
let buf = anc_afd.terminate();
|
||||
assert_eq!(
|
||||
buf.as_slice(),
|
||||
[
|
||||
0x00, 0x3f, 0xff, 0xfd, 0x61, 0x40, 0x65, 0x5a, 0x5a, 0x69, 0x95, 0x63, 0xf5, 0x0e,
|
||||
0x00, 0x80, 0x27, 0x27, 0xe2, 0xfc, 0x65, 0x12, 0xcb, 0xe6, 0x00, 0x80, 0x2f, 0xa8,
|
||||
0x02, 0x00, 0xbe, 0xa0, 0x08, 0x02, 0xfa, 0x80, 0x20, 0x0b, 0xea, 0x00, 0x80, 0x2f,
|
||||
0xa8, 0x02, 0x00, 0xbe, 0xa0, 0x08, 0x02, 0xfa, 0x80, 0x20, 0x0b, 0xea, 0x00, 0x80,
|
||||
0x2f, 0xa8, 0x02, 0x00, 0xbe, 0xa0, 0x08, 0x02, 0xfa, 0x80, 0x20, 0x0b, 0xea, 0x00,
|
||||
0x80, 0x2f, 0xa8, 0x02, 0x00, 0xbe, 0xa0, 0x08, 0x02, 0xfa, 0x80, 0x20, 0x0b, 0xea,
|
||||
0x00, 0x80, 0x2f, 0xa8, 0x02, 0x00, 0xbe, 0xa0, 0x08, 0x02, 0xfa, 0x80, 0x20, 0x0b,
|
||||
0xea, 0x00, 0x80, 0x2f, 0xa8, 0x02, 0x00, 0xbe, 0xa0, 0x08, 0x02, 0x74, 0x80, 0x20,
|
||||
0x08, 0x6e, 0xb7,
|
||||
]
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_afd_cea608() {
|
||||
let buf = VideoAncillaryAFDParser::parse_for_cea608(&[
|
||||
0x00, 0x3f, 0xff, 0xfd, 0x61, 0x40, 0xa0, 0x34, 0x55, 0x94, 0x4b, 0x23, 0xb0,
|
||||
])
|
||||
.unwrap();
|
||||
|
||||
assert_eq!(buf.as_slice(), [0x15, 0x94, 0x2c]);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_afd_cea608_32bit_padded() {
|
||||
let buf = VideoAncillaryAFDParser::parse_for_cea608(&[
|
||||
0x00, 0x3f, 0xff, 0xfd, 0x61, 0x40, 0xa0, 0x34, 0x55, 0x94, 0x4b, 0x23, 0xb0, 0x00,
|
||||
0x00, 0x00,
|
||||
])
|
||||
.unwrap();
|
||||
|
||||
assert_eq!(buf.as_slice(), [0x15, 0x94, 0x2c]);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_afd_cea708() {
|
||||
let buf = VideoAncillaryAFDParser::parse_for_cea708(&[
|
||||
0x00, 0x3f, 0xff, 0xfd, 0x61, 0x40, 0x65, 0x5a, 0x5a, 0x69, 0x95, 0x63, 0xf5, 0x0e,
|
||||
0x00, 0x80, 0x27, 0x27, 0xe2, 0xfc, 0x65, 0x12, 0xcb, 0xe6, 0x00, 0x80, 0x2f, 0xa8,
|
||||
0x02, 0x00, 0xbe, 0xa0, 0x08, 0x02, 0xfa, 0x80, 0x20, 0x0b, 0xea, 0x00, 0x80, 0x2f,
|
||||
0xa8, 0x02, 0x00, 0xbe, 0xa0, 0x08, 0x02, 0xfa, 0x80, 0x20, 0x0b, 0xea, 0x00, 0x80,
|
||||
0x2f, 0xa8, 0x02, 0x00, 0xbe, 0xa0, 0x08, 0x02, 0xfa, 0x80, 0x20, 0x0b, 0xea, 0x00,
|
||||
0x80, 0x2f, 0xa8, 0x02, 0x00, 0xbe, 0xa0, 0x08, 0x02, 0xfa, 0x80, 0x20, 0x0b, 0xea,
|
||||
0x00, 0x80, 0x2f, 0xa8, 0x02, 0x00, 0xbe, 0xa0, 0x08, 0x02, 0xfa, 0x80, 0x20, 0x0b,
|
||||
0xea, 0x00, 0x80, 0x2f, 0xa8, 0x02, 0x00, 0xbe, 0xa0, 0x08, 0x02, 0x74, 0x80, 0x20,
|
||||
0x08, 0x6e, 0xb7,
|
||||
])
|
||||
.unwrap();
|
||||
|
||||
assert_eq!(
|
||||
buf.as_slice(),
|
||||
[
|
||||
0x96, 0x69, 0x55, 0x3f, 0x43, 0x00, 0x00, 0x72, 0xf8, 0xfc, 0x94, 0x2c, 0xf9, 0x00,
|
||||
0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa,
|
||||
0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00,
|
||||
0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00,
|
||||
0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa,
|
||||
0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0xfa, 0x00, 0x00, 0x74, 0x00, 0x00,
|
||||
0x1b,
|
||||
]
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_afd_cea608_not_enough_data() {
|
||||
assert_eq!(
|
||||
VideoAncillaryAFDParser::parse_for_cea608(&[0x00, 0x3f])
|
||||
.unwrap_err()
|
||||
.downcast::<VideoAncillaryAFDError>()
|
||||
.unwrap(),
|
||||
VideoAncillaryAFDError::NotEnoughData,
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_afd_cea608_unexpected_data_flags() {
|
||||
assert_eq!(
|
||||
VideoAncillaryAFDParser::parse_for_cea608(&[
|
||||
0x00, 0x3f, 0xff, 0xdd, 0x61, 0x40, 0x60, 0x09, 0x88
|
||||
])
|
||||
.unwrap_err()
|
||||
.downcast::<VideoAncillaryAFDError>()
|
||||
.unwrap(),
|
||||
VideoAncillaryAFDError::UnexpectedDataFlags,
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_afd_cea608_unexpected_did() {
|
||||
assert_eq!(
|
||||
VideoAncillaryAFDParser::parse_for_cea608(&[
|
||||
0x00, 0x3f, 0xff, 0xfd, 0x61, 0x40, 0x60, 0x09, 0x88
|
||||
])
|
||||
.unwrap_err()
|
||||
.downcast::<VideoAncillaryAFDError>()
|
||||
.unwrap(),
|
||||
VideoAncillaryAFDError::UnexpectedDID {
|
||||
found: EIA_708_ANCILLARY_DID_16,
|
||||
expected: EIA_608_ANCILLARY_DID_16
|
||||
},
|
||||
);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn parse_afd_cea708_wrong_checksum() {
|
||||
assert_eq!(
|
||||
VideoAncillaryAFDParser::parse_for_cea708(&[
|
||||
0x00, 0x3f, 0xff, 0xfd, 0x61, 0x40, 0x60, 0x09, 0x81
|
||||
])
|
||||
.unwrap_err()
|
||||
.downcast::<VideoAncillaryAFDError>()
|
||||
.unwrap(),
|
||||
VideoAncillaryAFDError::WrongChecksum {
|
||||
found: 0x260,
|
||||
expected: 0x262
|
||||
},
|
||||
);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue