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tttocea708: fix origin-row handling for roll-up in CEA-708

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/2191>
This commit is contained in:
Matthew Waters 2025-04-08 21:25:37 +10:00 committed by GStreamer Marge Bot
parent 23afeb3258
commit 4e64b63bfe
1 changed files with 8 additions and 4 deletions
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12
video/closedcaption/src/tttocea708/translate.rs
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@ -68,6 +68,7 @@ pub struct TextToCea708 {
send_roll_up_preamble: bool,
erase_display_frame_no: Option<u64>,
last_frame_no: u64,
base_row: u8,
}
impl Default for TextToCea708 {
@ -101,6 +102,7 @@ impl Default for TextToCea708 {
send_roll_up_preamble: false,
erase_display_frame_no: None,
last_frame_no: 0,
base_row: 14,
}
}
}
@ -220,7 +222,8 @@ impl TextToCea708 {
if do_preamble {
if self.mode == Cea708Mode::RollUp {
self.service_writer.rollup_preamble(self.roll_up_count, 15);
self.service_writer
.rollup_preamble(self.roll_up_count, self.base_row);
}
self.send_roll_up_preamble = false;
@ -412,9 +415,6 @@ impl TextToCea708 {
}
if let Some(line_column) = line.column {
if self.mode != Cea708Mode::PopOn && self.mode != Cea708Mode::PaintOn {
self.send_roll_up_preamble = true;
}
self.pen_location.column = line_column as u8;
need_pen_location = true;
} else if self.mode == Cea708Mode::PopOn || self.mode == Cea708Mode::PaintOn {
@ -429,6 +429,10 @@ impl TextToCea708 {
if need_pen_location {
self.service_writer.set_pen_location(self.pen_location);
if !matches!(self.mode, Cea708Mode::PopOn | Cea708Mode::PaintOn) {
self.base_row = self.pen_location.row;
self.send_roll_up_preamble = true;
}
}
for (i, chunk) in line.chunks.iter().enumerate() {