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tttocea608: expose origin-column and origin-row properties

Browse source 
These can be controlled more precisely using json as the input
format, but exposing them as properties is still useful when
the input format is text.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/474>
This commit is contained in:
Mathieu Duponchelle 2021-02-10 21:18:13 +01:00 committed by GStreamer Merge Bot
parent 126df546c0
commit 20607fe346
1 changed files with 76 additions and 16 deletions
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78
video/closedcaption/src/tttocea608/imp.rs
View file

@ -94,15 +94,23 @@ const DEFAULT_FPS_N: i32 = 30;
const DEFAULT_FPS_D: i32 = 1;
const DEFAULT_MODE: Cea608Mode = Cea608Mode::RollUp2;
const DEFAULT_ORIGIN_ROW: i32 = -1;
const DEFAULT_ORIGIN_COLUMN: u32 = 0;
#[derive(Debug, Clone)]
struct Settings {
mode: Cea608Mode,
origin_row: i32,
origin_column: u32,
}
impl Default for Settings {
fn default() -> Self {
Settings { mode: DEFAULT_MODE }
Settings {
mode: DEFAULT_MODE,
origin_row: DEFAULT_ORIGIN_ROW,
origin_column: DEFAULT_ORIGIN_COLUMN,
}
}
}
@ -455,7 +463,7 @@ impl TtToCea608 {
Cea608Mode::RollUp2 | Cea608Mode::RollUp3 | Cea608Mode::RollUp4 => {
if let Some(carriage_return) = carriage_return {
if carriage_return {
*col = 0;
*col = self.settings.lock().unwrap().origin_column;
state.carriage_return(element, bufferlist);
true
} else {
@ -572,7 +580,7 @@ impl TtToCea608 {
Cea608Mode::RollUp2 | Cea608Mode::RollUp3 | Cea608Mode::RollUp4 => {
state.send_roll_up_preamble = true;
}
_ => col = 0,
_ => col = self.settings.lock().unwrap().origin_column,
}
}
}
@ -584,7 +592,7 @@ impl TtToCea608 {
if state.mode != Cea608Mode::PopOn && state.mode != Cea608Mode::PaintOn {
state.send_roll_up_preamble = true;
}
col = 0;
col = self.settings.lock().unwrap().origin_column;
}
}
@ -624,7 +632,7 @@ impl TtToCea608 {
}
col = line_column;
} else if state.mode == Cea608Mode::PopOn || state.mode == Cea608Mode::PaintOn {
col = 0;
col = self.settings.lock().unwrap().origin_column;
}
for (j, chunk) in line.chunks.iter().enumerate() {
@ -818,7 +826,15 @@ impl TtToCea608 {
})?;
let phrases: Vec<&str> = data.split('\n').collect();
let mut row = (std::cmp::max(0, 15 - phrases.len())) as u32;
let mut row = match settings.origin_row {
-1 => match settings.mode {
Cea608Mode::PopOn | Cea608Mode::PaintOn => {
15u32.saturating_sub(phrases.len() as u32)
}
Cea608Mode::RollUp2 | Cea608Mode::RollUp3 | Cea608Mode::RollUp4 => 14,
},
_ => settings.origin_row as u32,
};
for phrase in &phrases {
lines.lines.push(Line {
@ -831,9 +847,11 @@ impl TtToCea608 {
text: phrase.to_string(),
}],
});
if settings.mode == Cea608Mode::PopOn || settings.mode == Cea608Mode::PaintOn {
row += 1;
}
}
}
true => {
lines = serde_json::from_slice(&data).map_err(|err| {
gst_error!(CAT, obj: pad, "Failed to parse input as json: {}", err);
@ -994,14 +1012,34 @@ impl ObjectSubclass for TtToCea608 {
impl ObjectImpl for TtToCea608 {
fn properties() -> &'static [glib::ParamSpec] {
static PROPERTIES: Lazy<Vec<glib::ParamSpec>> = Lazy::new(|| {
vec![glib::ParamSpec::enum_(
vec![
glib::ParamSpec::enum_(
"mode",
"Mode",
"Which mode to operate in",
Cea608Mode::static_type(),
DEFAULT_MODE as i32,
glib::ParamFlags::READWRITE | gst::PARAM_FLAG_MUTABLE_PLAYING,
)]
),
glib::ParamSpec::int(
"origin-row",
"Origin row",
"Origin row, (-1=automatic)",
-1,
14,
DEFAULT_ORIGIN_ROW,
glib::ParamFlags::READWRITE | gst::PARAM_FLAG_MUTABLE_PLAYING,
),
glib::ParamSpec::uint(
"origin-column",
"Origin column",
"Origin column",
0,
31,
DEFAULT_ORIGIN_COLUMN,
glib::ParamFlags::READWRITE | gst::PARAM_FLAG_MUTABLE_PLAYING,
),
]
});
PROPERTIES.as_ref()
@ -1029,6 +1067,18 @@ impl ObjectImpl for TtToCea608 {
.expect("type checked upstream");
self.state.lock().unwrap().force_clear = true;
}
"origin-row" => {
let mut settings = self.settings.lock().unwrap();
settings.origin_row = value.get_some().expect("type checked upstream");
self.state.lock().unwrap().force_clear = true;
}
"origin-column" => {
let mut settings = self.settings.lock().unwrap();
settings.origin_column = value.get_some().expect("type checked upstream");
let mut state = self.state.lock().unwrap();
state.force_clear = true;
state.column = settings.origin_column;
}
_ => unimplemented!(),
}
}
@ -1039,6 +1089,14 @@ impl ObjectImpl for TtToCea608 {
let settings = self.settings.lock().unwrap();
settings.mode.to_value()
}
"origin-row" => {
let settings = self.settings.lock().unwrap();
settings.origin_row.to_value()
}
"origin-column" => {
let settings = self.settings.lock().unwrap();
settings.origin_column.to_value()
}
_ => unimplemented!(),
}
}
@ -1115,11 +1173,13 @@ impl ElementImpl for TtToCea608 {
match transition {
gst::StateChange::ReadyToPaused => {
let mut state = self.state.lock().unwrap();
let settings = self.settings.lock().unwrap();
*state = State::default();
state.force_clear = false;
state.mode = self.settings.lock().unwrap().mode;
state.mode = settings.mode;
if state.mode != Cea608Mode::PopOn {
state.send_roll_up_preamble = true;
state.column = settings.origin_column;
}
}
_ => (),