gst-video: bindings for VideoVBIEncoder & VideoVBIParser

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/merge_requests/1319>

gstreamer-video/Cargo.toml

@@ -22,6 +22,7 @@ gst = { package = "gstreamer", path = "../gstreamer" }
 gst-base = { package = "gstreamer-base", path = "../gstreamer-base" }
 futures-channel = "0.3"
 serde = { version = "1.0", optional = true, features = ["derive"] }
+thiserror = "1.0.49"
 
 [dev-dependencies]
 itertools = "0.11"

gstreamer-video/src/lib.rs

@@ -133,6 +133,27 @@ mod video_aggregator_convert_pad;
 #[cfg_attr(docsrs, doc(cfg(feature = "v1_16")))]
 mod video_aggregator_pad;
 
+#[cfg(feature = "v1_16")]
+#[cfg_attr(docsrs, doc(cfg(feature = "v1_16")))]
+mod video_vbi;
+#[cfg(feature = "v1_16")]
+#[cfg_attr(docsrs, doc(cfg(feature = "v1_16")))]
+pub use video_vbi::*;
+
+#[cfg(feature = "v1_16")]
+#[cfg_attr(docsrs, doc(cfg(feature = "v1_16")))]
+mod video_vbi_encoder;
+#[cfg(feature = "v1_16")]
+#[cfg_attr(docsrs, doc(cfg(feature = "v1_16")))]
+pub use video_vbi_encoder::*;
+
+#[cfg(feature = "v1_16")]
+#[cfg_attr(docsrs, doc(cfg(feature = "v1_16")))]
+mod video_vbi_parser;
+#[cfg(feature = "v1_16")]
+#[cfg_attr(docsrs, doc(cfg(feature = "v1_16")))]
+pub use video_vbi_parser::*;
+
 pub const VIDEO_ENCODER_FLOW_NEED_DATA: gst::FlowSuccess = gst::FlowSuccess::CustomSuccess;
 pub const VIDEO_DECODER_FLOW_NEED_DATA: gst::FlowSuccess = gst::FlowSuccess::CustomSuccess;
 

gstreamer-video/src/video_vbi.rs

@@ -0,0 +1,35 @@
+use crate::VideoFormat;
+pub(super) const VBI_HD_MIN_PIXEL_WIDTH: u32 = 1280;
+
+// rustdoc-stripper-ignore-next
+/// Video Vertical Blanking Interval related Errors.
+#[derive(thiserror::Error, Clone, Copy, Debug, Eq, PartialEq)]
+pub enum VideoVBIError {
+    #[error("Format and/or pixel_width is not supported")]
+    Unsupported,
+
+    #[error("Not enough space left in the current line")]
+    NotEnoughSpace,
+
+    #[error("Not enough data left in the current line")]
+    NotEnoughData,
+
+    #[error("Insufficient line buffer length {found}. Expected: {expected}")]
+    InsufficientLineBufLen { found: usize, expected: usize },
+}
+
+// rustdoc-stripper-ignore-next
+/// Returns the buffer length needed to store the line.
+pub(super) fn line_buffer_len(format: VideoFormat, width: u32) -> usize {
+    skip_assert_initialized!();
+    // Taken from gst-plugins-base/gst-libs/gst/video/video-info.c:fill_planes
+    match format {
+        VideoFormat::V210 => ((width as usize + 47) / 48) * 128,
+        VideoFormat::Uyvy => {
+            // round up width to the next multiple of 4
+            // FIXME: {integer}::next_multiple_of was stabilised in rustc 1.73.0
+            ((width as usize * 2) + 3) & !3
+        }
+        _ => unreachable!(),
+    }
+}

gstreamer-video/src/video_vbi_encoder.rs

@@ -0,0 +1,543 @@
+// Take a look at the license at the top of the repository in the LICENSE file.
+
+use crate::VideoFormat;
+use glib::translate::*;
+
+use crate::video_vbi::line_buffer_len;
+use crate::{VideoAncillaryDID, VideoAncillaryDID16, VideoVBIError, VBI_HD_MIN_PIXEL_WIDTH};
+
+glib::wrapper! {
+    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
+    struct VideoVBIEncoderInner(Boxed<ffi::GstVideoVBIEncoder>);
+
+    match fn {
+        copy => |ptr| ffi::gst_video_vbi_encoder_copy(ptr),
+        free => |ptr| ffi::gst_video_vbi_encoder_free(ptr),
+        type_ => || ffi::gst_video_vbi_encoder_get_type(),
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct VideoVBIEncoder {
+    inner: VideoVBIEncoderInner,
+    format: VideoFormat,
+    pixel_width: u32,
+    line_buffer_len: usize,
+    anc_len: usize,
+}
+
+unsafe impl Send for VideoVBIEncoder {}
+unsafe impl Sync for VideoVBIEncoder {}
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub enum VideoAFDDescriptionMode {
+    Composite,
+    Component,
+}
+
+impl VideoAFDDescriptionMode {
+    pub fn is_composite(&self) -> bool {
+        matches!(self, VideoAFDDescriptionMode::Composite)
+    }
+
+    pub fn is_component(&self) -> bool {
+        matches!(self, VideoAFDDescriptionMode::Component)
+    }
+}
+
+impl VideoVBIEncoder {
+    #[doc(alias = "gst_video_vbi_encoder_new")]
+    fn try_new(format: VideoFormat, pixel_width: u32) -> Result<VideoVBIEncoder, VideoVBIError> {
+        skip_assert_initialized!();
+        let res: Option<VideoVBIEncoderInner> = unsafe {
+            from_glib_full(ffi::gst_video_vbi_encoder_new(
+                format.into_glib(),
+                pixel_width,
+            ))
+        };
+
+        Ok(VideoVBIEncoder {
+            inner: res.ok_or(VideoVBIError::Unsupported)?,
+            format,
+            pixel_width,
+            line_buffer_len: line_buffer_len(format, pixel_width),
+            anc_len: 0,
+        })
+    }
+
+    // rustdoc-stripper-ignore-next
+    /// Adds the provided ancillary data as a DID and block number AFD.
+    pub fn add_did_ancillary(
+        &mut self,
+        adf_mode: VideoAFDDescriptionMode,
+        did: VideoAncillaryDID,
+        block_number: u8,
+        data: &[u8],
+    ) -> Result<(), VideoVBIError> {
+        self.add_ancillary(adf_mode, did.into_glib() as u8, block_number, data)
+    }
+
+    // rustdoc-stripper-ignore-next
+    /// Adds the provided ancillary data as a DID16 (DID & SDID) AFD.
+    pub fn add_did16_ancillary(
+        &mut self,
+        adf_mode: VideoAFDDescriptionMode,
+        did16: VideoAncillaryDID16,
+        data: &[u8],
+    ) -> Result<(), VideoVBIError> {
+        let did16 = did16.into_glib();
+
+        self.add_ancillary(
+            adf_mode,
+            ((did16 & 0xff00) >> 8) as u8,
+            (did16 & 0xff) as u8,
+            data,
+        )
+    }
+
+    #[doc(alias = "gst_video_vbi_encoder_add_ancillary")]
+    pub fn add_ancillary(
+        &mut self,
+        adf_mode: VideoAFDDescriptionMode,
+        did: u8,
+        sdid_block_number: u8,
+        data: &[u8],
+    ) -> Result<(), VideoVBIError> {
+        let data_count = data.len() as _;
+        let res: bool = unsafe {
+            from_glib(ffi::gst_video_vbi_encoder_add_ancillary(
+                self.inner.to_glib_none_mut().0,
+                adf_mode.is_composite().into_glib(),
+                did,
+                sdid_block_number,
+                data.to_glib_none().0,
+                data_count,
+            ))
+        };
+
+        if !res {
+            return Err(VideoVBIError::NotEnoughSpace);
+        }
+
+        // AFD: 1 byte (+2 if component)
+        // DID + SDID_block_number + Data Count: 3 bytes
+        // DATA: data_count bytes
+        // Checksum: 1 byte
+        let mut len = 1 + 3 + (data_count as usize) + 1;
+        if adf_mode.is_component() {
+            len += 2;
+        }
+
+        if matches!(self.format, VideoFormat::V210) {
+            // 10bits payload on 16bits for now: will be packed when writing the line
+            len *= 2;
+        }
+
+        self.anc_len += len;
+
+        Ok(())
+    }
+
+    // rustdoc-stripper-ignore-next
+    /// Returns the buffer length needed to store the line.
+    pub fn line_buffer_len(&self) -> usize {
+        self.line_buffer_len
+    }
+
+    // rustdoc-stripper-ignore-next
+    /// Writes the ancillaries encoded for VBI to the provided buffer.
+    ///
+    /// Use [`Self::line_buffer_len`] to get the expected buffer length.
+    ///
+    /// Resets the internal state, so this [`VideoVBIEncoder`] can be reused for
+    /// subsequent VBI encodings.
+    ///
+    /// # Returns
+    ///
+    /// - `Ok` with the written length in bytes in the line buffer containing the encoded
+    ///   ancilliaries previously added using [`VideoVBIEncoder::add_ancillary`],
+    ///   [`VideoVBIEncoder::add_did_ancillary`] or [`VideoVBIEncoder::add_did16_ancillary`].
+    /// - `Err` if the ancillary could not be added.
+    #[doc(alias = "gst_video_vbi_encoder_write_line")]
+    pub fn write_line(&mut self, data: &mut [u8]) -> Result<usize, VideoVBIError> {
+        if data.len() < self.line_buffer_len {
+            return Err(VideoVBIError::InsufficientLineBufLen {
+                found: data.len(),
+                expected: self.line_buffer_len,
+            });
+        }
+
+        unsafe {
+            let dest = data.as_mut_ptr();
+            ffi::gst_video_vbi_encoder_write_line(self.inner.to_glib_none_mut().0, dest);
+        }
+
+        let mut anc_len = std::mem::take(&mut self.anc_len);
+        match self.format {
+            VideoFormat::V210 => {
+                // Anc data consists in 10bits stored in 16bits word
+                let word_count = anc_len / 2;
+
+                if self.pixel_width < VBI_HD_MIN_PIXEL_WIDTH {
+                    // SD: Packs 12x 10bits data in 4x 32bits word
+                    anc_len =
+                        4 * 4 * ((word_count / 12) + if word_count % 12 == 0 { 0 } else { 1 });
+                } else {
+                    // HD: Packs 3x 10bits data in 1x 32bits word interleaving UV and Y components
+                    //     (where Y starts at buffer offset 0 and UV starts at buffer offset pixel_width)
+                    //     so we get 6 (uv,y) pairs every 4x 32bits word in the resulting line
+                    // FIXME: {integer}::div_ceil was stabilised in rustc 1.73.0
+                    let pair_count = usize::min(word_count, self.pixel_width as usize);
+                    anc_len = 4 * 4 * ((pair_count / 6) + if pair_count % 6 == 0 { 0 } else { 1 });
+                }
+            }
+            VideoFormat::Uyvy => {
+                // Anc data stored as bytes
+
+                if self.pixel_width < VBI_HD_MIN_PIXEL_WIDTH {
+                    // SD: Stores 4x bytes in 4x bytes let's keep 32 bits alignment
+                    anc_len = 4 * ((anc_len / 4) + if anc_len % 4 == 0 { 0 } else { 1 });
+                } else {
+                    // HD: Stores 4x bytes in 4x bytes interleaving UV and Y components
+                    //     (where Y starts at buffer offset 0 and UV starts at buffer offset pixel_width)
+                    //     so we get 2 (uv,y) pairs every 4x bytes in the resulting line
+                    // let's keep 32 bits alignment
+                    // FIXME: {integer}::div_ceil was stabilised in rustc 1.73.0
+                    let pair_count = usize::min(anc_len, self.pixel_width as usize);
+                    anc_len = 4 * ((pair_count / 2) + if pair_count % 2 == 0 { 0 } else { 1 });
+                }
+            }
+            _ => unreachable!(),
+        }
+
+        assert!(anc_len < self.line_buffer_len);
+
+        Ok(anc_len)
+    }
+}
+
+impl<'a> TryFrom<&'a crate::VideoInfo> for VideoVBIEncoder {
+    type Error = VideoVBIError;
+
+    fn try_from(info: &'a crate::VideoInfo) -> Result<VideoVBIEncoder, VideoVBIError> {
+        skip_assert_initialized!();
+        VideoVBIEncoder::try_new(info.format(), info.width())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn cea608_component() {
+        let mut encoder =
+            VideoVBIEncoder::try_new(VideoFormat::V210, VBI_HD_MIN_PIXEL_WIDTH).unwrap();
+        encoder
+            .add_did16_ancillary(
+                VideoAFDDescriptionMode::Component,
+                VideoAncillaryDID16::S334Eia608,
+                &[0x80, 0x94, 0x2c],
+            )
+            .unwrap();
+
+        let mut buf = vec![0; encoder.line_buffer_len()];
+        let anc_len = encoder.write_line(buf.as_mut_slice()).unwrap();
+        assert_eq!(32, anc_len);
+        assert_eq!(
+            buf[0..anc_len],
+            [
+                0x00, 0x00, 0x00, 0x00, 0xff, 0x03, 0xf0, 0x3f, 0x00, 0x84, 0x05, 0x00, 0x02, 0x01,
+                0x30, 0x20, 0x00, 0x00, 0x06, 0x00, 0x94, 0x01, 0xc0, 0x12, 0x00, 0x98, 0x0a, 0x00,
+                0x00, 0x00, 0x00, 0x00
+            ]
+        );
+    }
+
+    #[test]
+    fn cea608_component_sd() {
+        let mut encoder = VideoVBIEncoder::try_new(VideoFormat::V210, 768).unwrap();
+        encoder
+            .add_did16_ancillary(
+                VideoAFDDescriptionMode::Component,
+                VideoAncillaryDID16::S334Eia608,
+                &[0x80, 0x94, 0x2c],
+            )
+            .unwrap();
+
+        let mut buf = vec![0; encoder.line_buffer_len()];
+        let anc_len = encoder.write_line(buf.as_mut_slice()).unwrap();
+        assert_eq!(16, anc_len);
+        assert_eq!(
+            buf[0..anc_len],
+            [
+                0x00, 0xfc, 0xff, 0x3f, 0x61, 0x09, 0x34, 0x20, 0x80, 0x51, 0xc6, 0x12, 0xa6, 0x02,
+                0x00, 0x00
+            ]
+        );
+    }
+
+    #[test]
+    fn cea608_composite() {
+        let mut encoder =
+            VideoVBIEncoder::try_new(VideoFormat::V210, VBI_HD_MIN_PIXEL_WIDTH).unwrap();
+        encoder
+            .add_did16_ancillary(
+                VideoAFDDescriptionMode::Composite,
+                VideoAncillaryDID16::S334Eia608,
+                &[0x15, 0x94, 0x2c],
+            )
+            .unwrap();
+
+        let mut buf = vec![0; encoder.line_buffer_len()];
+        let anc_len = encoder.write_line(buf.as_mut_slice()).unwrap();
+        assert_eq!(32, anc_len);
+        assert_eq!(
+            buf[0..anc_len],
+            [
+                0x00, 0xf0, 0x0f, 0x00, 0x61, 0x01, 0x20, 0x10, 0x00, 0x0c, 0x08, 0x00, 0x15, 0x01,
+                0x40, 0x19, 0x00, 0xb0, 0x04, 0x00, 0x3b, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                0x00, 0x00, 0x00, 0x00
+            ]
+        );
+    }
+
+    #[test]
+    fn cea608_composite_sd() {
+        let mut encoder = VideoVBIEncoder::try_new(VideoFormat::V210, 768).unwrap();
+        encoder
+            .add_did16_ancillary(
+                VideoAFDDescriptionMode::Composite,
+                VideoAncillaryDID16::S334Eia608,
+                &[0x15, 0x94, 0x2c],
+            )
+            .unwrap();
+
+        let mut buf = vec![0; encoder.line_buffer_len()];
+        let anc_len = encoder.write_line(buf.as_mut_slice()).unwrap();
+        assert_eq!(16, anc_len);
+        assert_eq!(
+            buf[0..anc_len],
+            [
+                0xfc, 0x87, 0x25, 0x10, 0x03, 0x56, 0x44, 0x19, 0x2c, 0xed, 0x08, 0x00, 0x00, 0x00,
+                0x00, 0x00
+            ]
+        );
+    }
+
+    #[test]
+    fn cea608_component_uyvy() {
+        let mut encoder =
+            VideoVBIEncoder::try_new(VideoFormat::Uyvy, VBI_HD_MIN_PIXEL_WIDTH).unwrap();
+        encoder
+            .add_did16_ancillary(
+                VideoAFDDescriptionMode::Component,
+                VideoAncillaryDID16::S334Eia608,
+                &[0x80, 0x94, 0x2c],
+            )
+            .unwrap();
+
+        let mut buf = vec![0; encoder.line_buffer_len()];
+        let anc_len = encoder.write_line(buf.as_mut_slice()).unwrap();
+        assert_eq!(20, anc_len);
+        assert_eq!(
+            buf[0..anc_len],
+            [
+                0x00, 0x00, 0x00, 0xff, 0x00, 0xff, 0x00, 0x61, 0x00, 0x02, 0x00, 0x03, 0x00, 0x80,
+                0x00, 0x94, 0x00, 0x2c, 0x00, 0xa6
+            ]
+        );
+    }
+
+    #[test]
+    fn cea608_component_sd_uyvy() {
+        let mut encoder = VideoVBIEncoder::try_new(VideoFormat::Uyvy, 768).unwrap();
+        encoder
+            .add_did16_ancillary(
+                VideoAFDDescriptionMode::Component,
+                VideoAncillaryDID16::S334Eia608,
+                &[0x80, 0x94, 0x2c],
+            )
+            .unwrap();
+
+        let mut buf = vec![0; encoder.line_buffer_len()];
+        let anc_len = encoder.write_line(buf.as_mut_slice()).unwrap();
+        assert_eq!(12, anc_len);
+        assert_eq!(
+            buf[0..anc_len],
+            [0x00, 0xff, 0xff, 0x61, 0x02, 0x03, 0x80, 0x94, 0x2c, 0xa6, 0x00, 0x00]
+        );
+    }
+
+    #[test]
+    fn cea608_composite_uyvy() {
+        let mut encoder =
+            VideoVBIEncoder::try_new(VideoFormat::Uyvy, VBI_HD_MIN_PIXEL_WIDTH).unwrap();
+        encoder
+            .add_did16_ancillary(
+                VideoAFDDescriptionMode::Composite,
+                VideoAncillaryDID16::S334Eia608,
+                &[0x15, 0x94, 0x2c],
+            )
+            .unwrap();
+
+        let mut buf = vec![0; encoder.line_buffer_len()];
+        let anc_len = encoder.write_line(buf.as_mut_slice()).unwrap();
+        assert_eq!(16, anc_len);
+        assert_eq!(
+            buf[0..anc_len],
+            [
+                0x00, 0xfc, 0x00, 0x61, 0x00, 0x02, 0x00, 0x03, 0x00, 0x15, 0x00, 0x94, 0x00, 0x2c,
+                0x00, 0x3b
+            ]
+        );
+    }
+
+    #[test]
+    fn cea608_composite_sd_uyvy() {
+        let mut encoder = VideoVBIEncoder::try_new(VideoFormat::Uyvy, 768).unwrap();
+        encoder
+            .add_did16_ancillary(
+                VideoAFDDescriptionMode::Composite,
+                VideoAncillaryDID16::S334Eia608,
+                &[0x15, 0x94, 0x2c],
+            )
+            .unwrap();
+
+        let mut buf = vec![0; encoder.line_buffer_len()];
+        let anc_len = encoder.write_line(buf.as_mut_slice()).unwrap();
+        assert_eq!(8, anc_len);
+        assert_eq!(
+            buf[0..anc_len],
+            [0xfc, 0x61, 0x02, 0x03, 0x15, 0x94, 0x2c, 0x3b]
+        );
+    }
+
+    #[test]
+    fn insufficient_line_buf_len() {
+        let mut encoder =
+            VideoVBIEncoder::try_new(VideoFormat::V210, VBI_HD_MIN_PIXEL_WIDTH).unwrap();
+        encoder
+            .add_did16_ancillary(
+                VideoAFDDescriptionMode::Component,
+                VideoAncillaryDID16::S334Eia608,
+                &[0x80, 0x94, 0x2c],
+            )
+            .unwrap();
+        let mut buf = vec![0; 10];
+        assert_eq!(
+            encoder.write_line(buf.as_mut_slice()).unwrap_err(),
+            VideoVBIError::InsufficientLineBufLen {
+                found: 10,
+                expected: encoder.line_buffer_len()
+            },
+        );
+    }
+
+    #[test]
+    fn cea708_component() {
+        let mut encoder =
+            VideoVBIEncoder::try_new(VideoFormat::V210, VBI_HD_MIN_PIXEL_WIDTH).unwrap();
+        encoder
+            .add_did16_ancillary(
+                VideoAFDDescriptionMode::Component,
+                VideoAncillaryDID16::S334Eia708,
+                &[
+                    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 mut buf = vec![0; encoder.line_buffer_len()];
+        let anc_len = encoder.write_line(buf.as_mut_slice()).unwrap();
+        assert_eq!(256, anc_len);
+        assert_eq!(
+            buf[0..anc_len],
+            [
+                0x00, 0x00, 0x00, 0x00, 0xff, 0x03, 0xf0, 0x3f, 0x00, 0x84, 0x05, 0x00, 0x01, 0x01,
+                0x50, 0x25, 0x00, 0x58, 0x0a, 0x00, 0x69, 0x02, 0x50, 0x25, 0x00, 0xfc, 0x08, 0x00,
+                0x43, 0x01, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0x72, 0x02, 0x80, 0x1f, 0x00, 0xf0,
+                0x0b, 0x00, 0x94, 0x01, 0xc0, 0x12, 0x00, 0xe4, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20,
+                0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02,
+                0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00,
+                0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8,
+                0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20,
+                0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02,
+                0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00,
+                0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8,
+                0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20,
+                0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02,
+                0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00,
+                0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8,
+                0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20,
+                0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xd0, 0x09, 0x00, 0x00, 0x02,
+                0x00, 0x20, 0x00, 0x6c, 0x08, 0x00, 0xb7, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                0x00, 0x00, 0x00, 0x00
+            ]
+        );
+    }
+
+    #[test]
+    fn cea608_and_cea708_component() {
+        let mut encoder =
+            VideoVBIEncoder::try_new(VideoFormat::V210, VBI_HD_MIN_PIXEL_WIDTH).unwrap();
+        encoder
+            .add_did16_ancillary(
+                VideoAFDDescriptionMode::Component,
+                VideoAncillaryDID16::S334Eia608,
+                &[0x80, 0x94, 0x2c],
+            )
+            .unwrap();
+
+        encoder
+            .add_did16_ancillary(
+                VideoAFDDescriptionMode::Component,
+                VideoAncillaryDID16::S334Eia708,
+                &[
+                    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 mut buf = vec![0; encoder.line_buffer_len()];
+        let anc_len = encoder.write_line(buf.as_mut_slice()).unwrap();
+        assert_eq!(272, anc_len);
+        assert_eq!(
+            buf[0..anc_len],
+            [
+                0x00, 0x00, 0x00, 0x00, 0xff, 0x03, 0xf0, 0x3f, 0x00, 0x84, 0x05, 0x00, 0x02, 0x01,
+                0x30, 0x20, 0x00, 0x00, 0x06, 0x00, 0x94, 0x01, 0xc0, 0x12, 0x00, 0x98, 0x0a, 0x00,
+                0x00, 0x00, 0xf0, 0x3f, 0x00, 0xfc, 0x0f, 0x00, 0x61, 0x01, 0x10, 0x10, 0x00, 0x54,
+                0x09, 0x00, 0x96, 0x02, 0x90, 0x26, 0x00, 0x54, 0x09, 0x00, 0x3f, 0x02, 0x30, 0x14,
+                0x00, 0x00, 0x08, 0x00, 0x00, 0x02, 0x20, 0x27, 0x00, 0xe0, 0x07, 0x00, 0xfc, 0x02,
+                0x40, 0x19, 0x00, 0xb0, 0x04, 0x00, 0xf9, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00,
+                0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00,
+                0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20,
+                0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02,
+                0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00,
+                0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00,
+                0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20,
+                0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02,
+                0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00,
+                0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00,
+                0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20,
+                0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02,
+                0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00,
+                0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0x74, 0x02, 0x00, 0x20, 0x00, 0x00,
+                0x08, 0x00, 0x1b, 0x02, 0x70, 0x2b
+            ]
+        );
+    }
+}

gstreamer-video/src/video_vbi_parser.rs

@@ -0,0 +1,348 @@
+// Take a look at the license at the top of the repository in the LICENSE file.
+
+use crate::VideoFormat;
+use glib::translate::*;
+
+use std::fmt;
+
+use crate::video_vbi::line_buffer_len;
+use crate::{VideoAncillaryDID, VideoAncillaryDID16, VideoVBIError};
+
+glib::wrapper! {
+    #[doc(alias = "GstVideoAncillary")]
+    pub struct VideoAncillary(BoxedInline<ffi::GstVideoAncillary>);
+}
+
+impl VideoAncillary {
+    pub fn did_u8(&self) -> u8 {
+        self.inner.DID
+    }
+
+    pub fn did(&self) -> VideoAncillaryDID {
+        unsafe { VideoAncillaryDID::from_glib(self.inner.DID as ffi::GstVideoAncillaryDID) }
+    }
+
+    pub fn sdid_block_number(&self) -> u8 {
+        self.inner.SDID_block_number
+    }
+
+    pub fn did16(&self) -> VideoAncillaryDID16 {
+        unsafe {
+            VideoAncillaryDID16::from_glib(
+                (((self.inner.DID as u16) << 8) + self.inner.SDID_block_number as u16)
+                    as ffi::GstVideoAncillaryDID16,
+            )
+        }
+    }
+
+    pub fn len(&self) -> usize {
+        self.inner.data_count as usize
+    }
+
+    pub fn is_empty(&self) -> bool {
+        self.inner.data_count == 0
+    }
+
+    pub fn data(&self) -> &[u8] {
+        &self.inner.data[0..(self.inner.data_count as usize)]
+    }
+}
+
+impl fmt::Debug for VideoAncillary {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        f.debug_struct("VideoAncillary")
+            .field("did", &self.did())
+            .field("sdid_block_number", &self.sdid_block_number())
+            .field("did16", &self.did16())
+            .field("data_count", &self.inner.data_count)
+            .finish()
+    }
+}
+
+glib::wrapper! {
+    #[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
+    struct VideoVBIParserInner(Boxed<ffi::GstVideoVBIParser>);
+
+    match fn {
+        copy => |ptr| ffi::gst_video_vbi_parser_copy(ptr),
+        free => |ptr| ffi::gst_video_vbi_parser_free(ptr),
+        type_ => || ffi::gst_video_vbi_parser_get_type(),
+    }
+}
+
+#[derive(Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
+pub struct VideoVBIParser {
+    inner: VideoVBIParserInner,
+    line_buffer_len: usize,
+}
+
+impl VideoVBIParser {
+    #[doc(alias = "gst_video_vbi_parser_new")]
+    pub fn try_new(format: VideoFormat, pixel_width: u32) -> Result<VideoVBIParser, VideoVBIError> {
+        skip_assert_initialized!();
+        let res: Option<VideoVBIParserInner> = unsafe {
+            from_glib_full(ffi::gst_video_vbi_parser_new(
+                format.into_glib(),
+                pixel_width,
+            ))
+        };
+
+        Ok(VideoVBIParser {
+            inner: res.ok_or(VideoVBIError::Unsupported)?,
+            line_buffer_len: line_buffer_len(format, pixel_width),
+        })
+    }
+
+    // rustdoc-stripper-ignore-next
+    /// Returns the buffer length needed to store the line.
+    pub fn line_buffer_len(&self) -> usize {
+        self.line_buffer_len
+    }
+
+    #[doc(alias = "gst_video_vbi_parser_add_line")]
+    pub fn add_line(&mut self, data: &[u8]) -> Result<(), VideoVBIError> {
+        if data.len() < self.line_buffer_len {
+            return Err(VideoVBIError::InsufficientLineBufLen {
+                found: data.len(),
+                expected: self.line_buffer_len,
+            });
+        }
+        unsafe {
+            let data = data.as_ptr();
+            ffi::gst_video_vbi_parser_add_line(self.inner.to_glib_none_mut().0, data);
+        }
+
+        Ok(())
+    }
+
+    pub fn iter(&mut self) -> AncillaryIter {
+        AncillaryIter { parser: self }
+    }
+
+    #[doc(alias = "gst_video_vbi_parser_get_ancillary")]
+    pub fn next_ancillary(&mut self) -> Option<Result<VideoAncillary, VideoVBIError>> {
+        unsafe {
+            let mut video_anc = std::mem::MaybeUninit::uninit();
+            let res = ffi::gst_video_vbi_parser_get_ancillary(
+                self.inner.to_glib_none_mut().0,
+                video_anc.as_mut_ptr(),
+            );
+
+            match res {
+                ffi::GST_VIDEO_VBI_PARSER_RESULT_OK => Some(Ok(VideoAncillary {
+                    inner: video_anc.assume_init(),
+                })),
+                ffi::GST_VIDEO_VBI_PARSER_RESULT_DONE => None,
+                ffi::GST_VIDEO_VBI_PARSER_RESULT_ERROR => Some(Err(VideoVBIError::NotEnoughData)),
+                _ => unreachable!(),
+            }
+        }
+    }
+}
+
+unsafe impl Send for VideoVBIParser {}
+unsafe impl Sync for VideoVBIParser {}
+
+impl<'a> TryFrom<&'a crate::VideoInfo> for VideoVBIParser {
+    type Error = VideoVBIError;
+
+    fn try_from(info: &'a crate::VideoInfo) -> Result<VideoVBIParser, VideoVBIError> {
+        skip_assert_initialized!();
+        VideoVBIParser::try_new(info.format(), info.width())
+    }
+}
+
+#[derive(Debug)]
+pub struct AncillaryIter<'a> {
+    parser: &'a mut VideoVBIParser,
+}
+
+impl<'a> Iterator for AncillaryIter<'a> {
+    type Item = Result<VideoAncillary, VideoVBIError>;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        self.parser.next_ancillary()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::VBI_HD_MIN_PIXEL_WIDTH;
+
+    fn init_line_buf(parser: &VideoVBIParser, anc_buf: &[u8]) -> Vec<u8> {
+        skip_assert_initialized!();
+        let mut line_buf = vec![0; parser.line_buffer_len()];
+        line_buf[0..anc_buf.len()].copy_from_slice(anc_buf);
+        line_buf
+    }
+
+    #[test]
+    fn cea608_component() {
+        let mut parser =
+            VideoVBIParser::try_new(VideoFormat::V210, VBI_HD_MIN_PIXEL_WIDTH).unwrap();
+        let line_buf = init_line_buf(
+            &parser,
+            &[
+                0x00, 0x00, 0x00, 0x00, 0xff, 0x03, 0xf0, 0x3f, 0x00, 0x84, 0x05, 0x00, 0x02, 0x01,
+                0x30, 0x20, 0x00, 0x00, 0x06, 0x00, 0x94, 0x01, 0xc0, 0x12, 0x00, 0x98, 0x0a, 0x00,
+                0x00, 0x00, 0x00, 0x00,
+            ],
+        );
+        parser.add_line(&line_buf).unwrap();
+
+        let video_anc = parser.next_ancillary().unwrap().unwrap();
+        assert_eq!(video_anc.did16(), VideoAncillaryDID16::S334Eia608);
+        assert_eq!(video_anc.data(), [0x80, 0x94, 0x2c]);
+
+        assert!(parser.next_ancillary().is_none());
+    }
+
+    #[test]
+    fn cea608_composite() {
+        let mut parser =
+            VideoVBIParser::try_new(VideoFormat::V210, VBI_HD_MIN_PIXEL_WIDTH).unwrap();
+        let line_buf = init_line_buf(
+            &parser,
+            &[
+                0x00, 0xf0, 0x0f, 0x00, 0x61, 0x01, 0x20, 0x10, 0x00, 0x0c, 0x08, 0x00, 0x15, 0x01,
+                0x40, 0x19, 0x00, 0xb0, 0x04, 0x00, 0x3b, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                0x00, 0x00, 0x00, 0x00,
+            ],
+        );
+        parser.add_line(&line_buf).unwrap();
+
+        let video_anc = parser.next_ancillary().unwrap().unwrap();
+        assert_eq!(video_anc.did16(), VideoAncillaryDID16::S334Eia608);
+        assert_eq!(video_anc.data(), [0x15, 0x94, 0x2c]);
+
+        assert!(parser.next_ancillary().is_none());
+    }
+
+    #[test]
+    fn cea608_can_not_parse() {
+        let mut parser =
+            VideoVBIParser::try_new(VideoFormat::V210, VBI_HD_MIN_PIXEL_WIDTH).unwrap();
+        let line_buf = init_line_buf(&parser, &[0x00, 0xf0, 0x0f, 0x00, 0x61, 0x01, 0x20, 0x10]);
+        parser.add_line(&line_buf).unwrap();
+
+        assert!(parser.next_ancillary().is_none());
+    }
+
+    #[test]
+    fn cea608_insufficient_line_buf_len() {
+        let mut parser =
+            VideoVBIParser::try_new(VideoFormat::V210, VBI_HD_MIN_PIXEL_WIDTH).unwrap();
+        let line_buf = vec![0; 10];
+
+        assert_eq!(
+            parser.add_line(&line_buf).unwrap_err(),
+            VideoVBIError::InsufficientLineBufLen {
+                found: 10,
+                expected: parser.line_buffer_len()
+            },
+        );
+    }
+
+    #[test]
+    fn cea708_component() {
+        let mut parser =
+            VideoVBIParser::try_new(VideoFormat::V210, VBI_HD_MIN_PIXEL_WIDTH).unwrap();
+        let line_buf = init_line_buf(
+            &parser,
+            &[
+                0x00, 0x00, 0x00, 0x00, 0xff, 0x03, 0xf0, 0x3f, 0x00, 0x84, 0x05, 0x00, 0x01, 0x01,
+                0x50, 0x25, 0x00, 0x58, 0x0a, 0x00, 0x69, 0x02, 0x50, 0x25, 0x00, 0xfc, 0x08, 0x00,
+                0x43, 0x01, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0x72, 0x02, 0x80, 0x1f, 0x00, 0xf0,
+                0x0b, 0x00, 0x94, 0x01, 0xc0, 0x12, 0x00, 0xe4, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20,
+                0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02,
+                0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00,
+                0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8,
+                0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20,
+                0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02,
+                0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00,
+                0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8,
+                0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20,
+                0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02,
+                0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00,
+                0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8,
+                0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20,
+                0x00, 0xe8, 0x0b, 0x00, 0x00, 0x02, 0x00, 0x20, 0x00, 0xd0, 0x09, 0x00, 0x00, 0x02,
+                0x00, 0x20, 0x00, 0x6c, 0x08, 0x00, 0xb7, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                0x00, 0x00, 0x00, 0x00,
+            ],
+        );
+        parser.add_line(&line_buf).unwrap();
+
+        let video_anc = parser.next_ancillary().unwrap().unwrap();
+        assert_eq!(video_anc.did16(), VideoAncillaryDID16::S334Eia708);
+        assert_eq!(
+            video_anc.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,
+            ]
+        );
+
+        assert!(parser.next_ancillary().is_none());
+    }
+
+    #[test]
+    fn cea608_and_cea708_component() {
+        let mut parser =
+            VideoVBIParser::try_new(VideoFormat::V210, VBI_HD_MIN_PIXEL_WIDTH).unwrap();
+        let mut line_buf = vec![0; parser.line_buffer_len()];
+        let anc_buf = [
+            0x00, 0x00, 0x00, 0x00, 0xff, 0x03, 0xf0, 0x3f, 0x00, 0x84, 0x05, 0x00, 0x02, 0x01,
+            0x30, 0x20, 0x00, 0x00, 0x06, 0x00, 0x94, 0x01, 0xc0, 0x12, 0x00, 0x98, 0x0a, 0x00,
+            0x00, 0x00, 0xf0, 0x3f, 0x00, 0xfc, 0x0f, 0x00, 0x61, 0x01, 0x10, 0x10, 0x00, 0x54,
+            0x09, 0x00, 0x96, 0x02, 0x90, 0x26, 0x00, 0x54, 0x09, 0x00, 0x3f, 0x02, 0x30, 0x14,
+            0x00, 0x00, 0x08, 0x00, 0x00, 0x02, 0x20, 0x27, 0x00, 0xe0, 0x07, 0x00, 0xfc, 0x02,
+            0x40, 0x19, 0x00, 0xb0, 0x04, 0x00, 0xf9, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00,
+            0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00,
+            0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20,
+            0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02,
+            0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00,
+            0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00,
+            0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20,
+            0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02,
+            0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00,
+            0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00,
+            0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20,
+            0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02,
+            0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00,
+            0xfa, 0x02, 0x00, 0x20, 0x00, 0x00, 0x08, 0x00, 0x74, 0x02, 0x00, 0x20, 0x00, 0x00,
+            0x08, 0x00, 0x1b, 0x02, 0x70, 0x2b,
+        ];
+        line_buf[0..anc_buf.len()].copy_from_slice(&anc_buf);
+        parser.add_line(&line_buf).unwrap();
+
+        let mut anc_iter = parser.iter();
+
+        let video_anc = anc_iter.next().unwrap().unwrap();
+        assert_eq!(video_anc.did16(), VideoAncillaryDID16::S334Eia608);
+        assert_eq!(video_anc.data(), [0x80, 0x94, 0x2c]);
+
+        let video_anc = anc_iter.next().unwrap().unwrap();
+        assert_eq!(video_anc.did16(), VideoAncillaryDID16::S334Eia708);
+        assert_eq!(
+            video_anc.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,
+            ]
+        );
+
+        assert!(anc_iter.next().is_none());
+    }
+}