2018-12-28 22:00:28 +00:00
|
|
|
// Copyright (C) 2018 Sebastian Dröge <sebastian@centricular.com>
|
|
|
|
//
|
2022-01-15 18:40:12 +00:00
|
|
|
// This Source Code Form is subject to the terms of the Mozilla Public License, v2.0.
|
|
|
|
// If a copy of the MPL was not distributed with this file, You can obtain one at
|
|
|
|
// <https://mozilla.org/MPL/2.0/>.
|
2018-12-28 22:00:28 +00:00
|
|
|
//
|
2022-01-15 18:40:12 +00:00
|
|
|
// SPDX-License-Identifier: MPL-2.0
|
2018-12-28 22:00:28 +00:00
|
|
|
|
2021-06-03 18:20:54 +00:00
|
|
|
use gst::glib;
|
2018-12-28 22:00:28 +00:00
|
|
|
use gst::prelude::*;
|
|
|
|
use gst::subclass::prelude::*;
|
2022-02-21 17:43:46 +00:00
|
|
|
use gst::{element_error, loggable_error};
|
2020-04-24 10:55:01 +00:00
|
|
|
use gst_video::ValidVideoTimeCode;
|
2018-12-28 22:00:28 +00:00
|
|
|
|
2019-03-22 14:08:54 +00:00
|
|
|
use std::cmp;
|
2019-01-21 19:45:00 +00:00
|
|
|
use std::sync::{Mutex, MutexGuard};
|
2018-12-28 22:00:28 +00:00
|
|
|
|
2020-11-22 17:21:45 +00:00
|
|
|
use once_cell::sync::Lazy;
|
|
|
|
|
2020-11-05 17:24:16 +00:00
|
|
|
use super::parser::{MccLine, MccParser};
|
2018-12-28 22:00:28 +00:00
|
|
|
use crate::line_reader::LineReader;
|
2020-11-05 17:24:16 +00:00
|
|
|
use crate::parser_utils::TimeCode;
|
2019-01-21 19:45:00 +00:00
|
|
|
|
2020-11-22 17:21:45 +00:00
|
|
|
static CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
|
|
|
|
gst::DebugCategory::new(
|
|
|
|
"mccparse",
|
|
|
|
gst::DebugColorFlags::empty(),
|
|
|
|
Some("Mcc Parser Element"),
|
|
|
|
)
|
|
|
|
});
|
2018-12-28 22:00:28 +00:00
|
|
|
|
|
|
|
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
|
|
|
|
enum Format {
|
|
|
|
Cea708Cdp,
|
|
|
|
Cea608,
|
|
|
|
}
|
|
|
|
|
2019-03-22 14:08:54 +00:00
|
|
|
#[derive(Debug)]
|
|
|
|
struct PullState {
|
|
|
|
need_stream_start: bool,
|
|
|
|
stream_id: String,
|
|
|
|
offset: u64,
|
2021-06-04 17:06:24 +00:00
|
|
|
duration: Option<gst::ClockTime>,
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
impl PullState {
|
2020-11-15 13:50:12 +00:00
|
|
|
fn new(element: &super::MccParse, pad: &gst::Pad) -> Self {
|
2019-03-22 14:08:54 +00:00
|
|
|
Self {
|
|
|
|
need_stream_start: true,
|
2020-12-05 18:29:50 +00:00
|
|
|
stream_id: pad.create_stream_id(element, Some("src")).to_string(),
|
2019-03-22 14:08:54 +00:00
|
|
|
offset: 0,
|
2021-06-04 17:06:24 +00:00
|
|
|
duration: gst::ClockTime::NONE,
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2018-12-28 22:00:28 +00:00
|
|
|
#[derive(Debug)]
|
|
|
|
struct State {
|
|
|
|
reader: LineReader<gst::MappedBuffer<gst::buffer::Readable>>,
|
|
|
|
parser: MccParser,
|
|
|
|
format: Option<Format>,
|
|
|
|
need_segment: bool,
|
|
|
|
pending_events: Vec<gst::Event>,
|
2021-06-04 17:06:24 +00:00
|
|
|
start_position: Option<gst::ClockTime>,
|
|
|
|
last_position: Option<gst::ClockTime>,
|
2018-12-28 22:00:28 +00:00
|
|
|
last_timecode: Option<gst_video::ValidVideoTimeCode>,
|
|
|
|
timecode_rate: Option<(u8, bool)>,
|
2019-03-22 14:08:54 +00:00
|
|
|
segment: gst::FormattedSegment<gst::ClockTime>,
|
|
|
|
|
|
|
|
// Pull mode
|
|
|
|
pull: Option<PullState>,
|
|
|
|
|
|
|
|
// seeking
|
|
|
|
seeking: bool,
|
|
|
|
discont: bool,
|
2020-01-24 23:20:37 +00:00
|
|
|
seek_seqnum: Option<gst::Seqnum>,
|
2019-03-22 14:08:54 +00:00
|
|
|
last_raw_line: Vec<u8>,
|
|
|
|
replay_last_line: bool,
|
|
|
|
need_flush_stop: bool,
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
impl Default for State {
|
|
|
|
fn default() -> Self {
|
|
|
|
Self {
|
|
|
|
reader: LineReader::new(),
|
|
|
|
parser: MccParser::new(),
|
|
|
|
format: None,
|
|
|
|
need_segment: true,
|
|
|
|
pending_events: Vec::new(),
|
2021-06-04 17:06:24 +00:00
|
|
|
start_position: None,
|
|
|
|
last_position: None,
|
2018-12-28 22:00:28 +00:00
|
|
|
last_timecode: None,
|
|
|
|
timecode_rate: None,
|
2021-06-04 17:06:24 +00:00
|
|
|
segment: gst::FormattedSegment::new(),
|
2019-03-22 14:08:54 +00:00
|
|
|
pull: None,
|
|
|
|
seeking: false,
|
|
|
|
discont: false,
|
2020-01-24 23:20:37 +00:00
|
|
|
seek_seqnum: None,
|
2019-03-22 14:08:54 +00:00
|
|
|
last_raw_line: Vec::new(),
|
|
|
|
replay_last_line: false,
|
|
|
|
need_flush_stop: false,
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-03-22 14:08:54 +00:00
|
|
|
fn parse_timecode(
|
|
|
|
framerate: gst::Fraction,
|
|
|
|
drop_frame: bool,
|
|
|
|
tc: TimeCode,
|
|
|
|
) -> Result<ValidVideoTimeCode, gst::FlowError> {
|
|
|
|
let timecode = gst_video::VideoTimeCode::new(
|
|
|
|
framerate,
|
|
|
|
None,
|
|
|
|
if drop_frame {
|
|
|
|
gst_video::VideoTimeCodeFlags::DROP_FRAME
|
|
|
|
} else {
|
|
|
|
gst_video::VideoTimeCodeFlags::empty()
|
|
|
|
},
|
|
|
|
tc.hours,
|
|
|
|
tc.minutes,
|
|
|
|
tc.seconds,
|
|
|
|
tc.frames,
|
|
|
|
0,
|
|
|
|
);
|
|
|
|
|
|
|
|
timecode.try_into().map_err(|_| gst::FlowError::Error)
|
|
|
|
}
|
|
|
|
|
|
|
|
fn parse_timecode_rate(
|
|
|
|
timecode_rate: Option<(u8, bool)>,
|
|
|
|
) -> Result<(gst::Fraction, bool), gst::FlowError> {
|
|
|
|
let (framerate, drop_frame) = match timecode_rate {
|
|
|
|
Some((rate, false)) => (gst::Fraction::new(rate as i32, 1), false),
|
|
|
|
Some((rate, true)) => (gst::Fraction::new(rate as i32 * 1000, 1001), true),
|
|
|
|
None => {
|
|
|
|
return Err(gst::FlowError::Error);
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
Ok((framerate, drop_frame))
|
|
|
|
}
|
|
|
|
|
2018-12-28 22:00:28 +00:00
|
|
|
impl State {
|
2020-11-19 16:20:29 +00:00
|
|
|
#[allow(clippy::type_complexity)]
|
2021-04-20 12:57:40 +00:00
|
|
|
fn line(&mut self, drain: bool) -> Result<Option<MccLine>, (&[u8], nom::error::Error<&[u8]>)> {
|
2019-07-11 07:54:22 +00:00
|
|
|
let line = if self.replay_last_line {
|
|
|
|
self.replay_last_line = false;
|
|
|
|
&self.last_raw_line
|
|
|
|
} else {
|
2021-04-20 12:58:11 +00:00
|
|
|
match self.reader.line_with_drain(drain) {
|
2019-03-22 14:08:54 +00:00
|
|
|
None => {
|
|
|
|
return Ok(None);
|
|
|
|
}
|
|
|
|
Some(line) => {
|
|
|
|
self.last_raw_line = line.to_vec();
|
|
|
|
line
|
|
|
|
}
|
2019-07-11 07:54:22 +00:00
|
|
|
}
|
2018-12-28 22:00:28 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
self.parser
|
2019-03-22 14:08:54 +00:00
|
|
|
.parse_line(line, !self.seeking)
|
2018-12-28 22:00:28 +00:00
|
|
|
.map(Option::Some)
|
|
|
|
.map_err(|err| (line, err))
|
|
|
|
}
|
2019-01-21 19:45:00 +00:00
|
|
|
|
|
|
|
fn handle_timecode(
|
|
|
|
&mut self,
|
2020-11-15 13:50:12 +00:00
|
|
|
element: &super::MccParse,
|
2019-01-21 19:45:00 +00:00
|
|
|
framerate: gst::Fraction,
|
|
|
|
drop_frame: bool,
|
2019-03-22 14:08:54 +00:00
|
|
|
tc: TimeCode,
|
2019-01-21 19:45:00 +00:00
|
|
|
) -> Result<ValidVideoTimeCode, gst::FlowError> {
|
2019-03-22 14:08:54 +00:00
|
|
|
match parse_timecode(framerate, drop_frame, tc) {
|
2019-01-21 19:45:00 +00:00
|
|
|
Ok(timecode) => Ok(timecode),
|
|
|
|
Err(timecode) => {
|
|
|
|
let last_timecode =
|
|
|
|
self.last_timecode
|
|
|
|
.as_ref()
|
|
|
|
.map(Clone::clone)
|
|
|
|
.ok_or_else(|| {
|
2020-12-20 18:43:45 +00:00
|
|
|
element_error!(
|
2019-01-21 19:45:00 +00:00
|
|
|
element,
|
|
|
|
gst::StreamError::Decode,
|
|
|
|
["Invalid first timecode {:?}", timecode]
|
|
|
|
);
|
|
|
|
|
|
|
|
gst::FlowError::Error
|
|
|
|
})?;
|
|
|
|
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::warning!(
|
2019-01-21 19:45:00 +00:00
|
|
|
CAT,
|
|
|
|
obj: element,
|
|
|
|
"Invalid timecode {:?}, using previous {:?}",
|
|
|
|
timecode,
|
|
|
|
last_timecode
|
|
|
|
);
|
|
|
|
|
|
|
|
Ok(last_timecode)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Calculate a timestamp from the timecode and make sure to
|
|
|
|
/// not produce timestamps jumping backwards
|
|
|
|
fn update_timestamp(
|
|
|
|
&mut self,
|
2020-11-15 13:50:12 +00:00
|
|
|
element: &super::MccParse,
|
2019-01-21 19:45:00 +00:00
|
|
|
timecode: &gst_video::ValidVideoTimeCode,
|
|
|
|
) {
|
2021-06-04 17:06:24 +00:00
|
|
|
let nsecs = timecode.time_since_daily_jam();
|
2019-01-21 19:45:00 +00:00
|
|
|
if self.start_position.is_none() {
|
2021-06-04 17:06:24 +00:00
|
|
|
self.start_position = Some(nsecs);
|
2019-01-21 19:45:00 +00:00
|
|
|
}
|
2021-06-04 17:06:24 +00:00
|
|
|
let start_position = self.start_position.expect("checked above");
|
2019-01-21 19:45:00 +00:00
|
|
|
|
2021-06-04 17:06:24 +00:00
|
|
|
let nsecs = nsecs.checked_sub(start_position).unwrap_or_else(|| {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::fixme!(
|
2019-01-21 19:45:00 +00:00
|
|
|
CAT,
|
|
|
|
obj: element,
|
|
|
|
"New position {} < start position {}",
|
|
|
|
nsecs,
|
2021-06-04 17:06:24 +00:00
|
|
|
start_position,
|
2019-01-21 19:45:00 +00:00
|
|
|
);
|
2021-06-04 17:06:24 +00:00
|
|
|
start_position
|
|
|
|
});
|
2019-01-21 19:45:00 +00:00
|
|
|
|
2021-06-04 17:06:24 +00:00
|
|
|
if self
|
|
|
|
.last_position
|
|
|
|
.map_or(true, |last_position| nsecs >= last_position)
|
|
|
|
{
|
|
|
|
self.last_position = Some(nsecs);
|
2019-01-21 19:45:00 +00:00
|
|
|
} else {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::fixme!(
|
2019-01-21 19:45:00 +00:00
|
|
|
CAT,
|
|
|
|
obj: element,
|
|
|
|
"New position {} < last position {}",
|
|
|
|
nsecs,
|
2021-06-04 17:06:24 +00:00
|
|
|
self.last_position.display(),
|
2019-01-21 19:45:00 +00:00
|
|
|
);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fn add_buffer_metadata(
|
|
|
|
&mut self,
|
2020-11-15 13:50:12 +00:00
|
|
|
element: &super::MccParse,
|
2019-01-21 19:45:00 +00:00
|
|
|
buffer: &mut gst::buffer::Buffer,
|
|
|
|
timecode: &gst_video::ValidVideoTimeCode,
|
2019-07-11 07:54:22 +00:00
|
|
|
framerate: gst::Fraction,
|
2019-01-21 19:45:00 +00:00
|
|
|
) {
|
|
|
|
let buffer = buffer.get_mut().unwrap();
|
2021-07-30 10:53:35 +00:00
|
|
|
gst_video::VideoTimeCodeMeta::add(buffer, timecode);
|
2019-01-21 19:45:00 +00:00
|
|
|
|
2021-07-30 10:53:35 +00:00
|
|
|
self.update_timestamp(element, timecode);
|
2019-01-21 19:45:00 +00:00
|
|
|
|
|
|
|
buffer.set_pts(self.last_position);
|
2019-03-22 14:08:54 +00:00
|
|
|
|
|
|
|
if self.discont {
|
|
|
|
buffer.set_flags(gst::BufferFlags::DISCONT);
|
|
|
|
self.discont = false;
|
|
|
|
}
|
|
|
|
|
2019-01-21 19:45:00 +00:00
|
|
|
buffer.set_duration(
|
2021-11-06 07:34:10 +00:00
|
|
|
gst::ClockTime::SECOND.mul_div_ceil(framerate.denom() as u64, framerate.numer() as u64),
|
2019-01-21 19:45:00 +00:00
|
|
|
);
|
|
|
|
}
|
|
|
|
|
|
|
|
fn create_events(
|
|
|
|
&mut self,
|
2020-11-15 13:50:12 +00:00
|
|
|
element: &super::MccParse,
|
2019-03-22 14:08:54 +00:00
|
|
|
format: Option<Format>,
|
2019-07-11 07:54:22 +00:00
|
|
|
framerate: gst::Fraction,
|
2019-01-21 19:45:00 +00:00
|
|
|
) -> Vec<gst::Event> {
|
|
|
|
let mut events = Vec::new();
|
|
|
|
|
2019-03-22 14:08:54 +00:00
|
|
|
if self.need_flush_stop {
|
2020-06-24 22:33:57 +00:00
|
|
|
let mut b = gst::event::FlushStop::builder(true);
|
2019-03-22 14:08:54 +00:00
|
|
|
|
2020-01-24 23:20:37 +00:00
|
|
|
if let Some(seek_seqnum) = self.seek_seqnum {
|
|
|
|
b = b.seqnum(seek_seqnum);
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
events.push(b.build());
|
|
|
|
self.need_flush_stop = false;
|
|
|
|
}
|
|
|
|
|
|
|
|
if let Some(pull) = &mut self.pull {
|
|
|
|
if pull.need_stream_start {
|
2020-06-24 22:33:57 +00:00
|
|
|
events.push(gst::event::StreamStart::new(&pull.stream_id));
|
2019-03-22 14:08:54 +00:00
|
|
|
pull.need_stream_start = false;
|
|
|
|
}
|
|
|
|
}
|
2019-01-21 19:45:00 +00:00
|
|
|
|
2019-03-22 14:08:54 +00:00
|
|
|
if let Some(format) = format {
|
|
|
|
if self.format != Some(format) {
|
|
|
|
self.format = Some(format);
|
|
|
|
|
|
|
|
let caps = match format {
|
|
|
|
Format::Cea708Cdp => gst::Caps::builder("closedcaption/x-cea-708")
|
2021-11-06 07:34:10 +00:00
|
|
|
.field("format", "cdp")
|
|
|
|
.field("framerate", framerate)
|
2019-03-22 14:08:54 +00:00
|
|
|
.build(),
|
|
|
|
Format::Cea608 => gst::Caps::builder("closedcaption/x-cea-608")
|
2021-11-06 07:34:10 +00:00
|
|
|
.field("format", "s334-1a")
|
|
|
|
.field("framerate", framerate)
|
2019-03-22 14:08:54 +00:00
|
|
|
.build(),
|
|
|
|
};
|
|
|
|
|
2020-06-24 22:33:57 +00:00
|
|
|
events.push(gst::event::Caps::new(&caps));
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::info!(CAT, obj: element, "Caps changed to {:?}", &caps);
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
2019-01-21 19:45:00 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if self.need_segment {
|
2020-06-24 22:33:57 +00:00
|
|
|
let mut b = gst::event::Segment::builder(&self.segment);
|
2019-03-22 14:08:54 +00:00
|
|
|
|
2020-01-24 23:20:37 +00:00
|
|
|
if let Some(seek_seqnum) = self.seek_seqnum {
|
|
|
|
b = b.seqnum(seek_seqnum);
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
events.push(b.build());
|
2019-01-21 19:45:00 +00:00
|
|
|
self.need_segment = false;
|
|
|
|
}
|
|
|
|
|
2021-07-30 10:53:35 +00:00
|
|
|
events.append(&mut self.pending_events);
|
2019-01-21 19:45:00 +00:00
|
|
|
events
|
|
|
|
}
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
|
|
|
|
2020-11-15 13:50:12 +00:00
|
|
|
pub struct MccParse {
|
2018-12-28 22:00:28 +00:00
|
|
|
srcpad: gst::Pad,
|
|
|
|
sinkpad: gst::Pad,
|
|
|
|
state: Mutex<State>,
|
|
|
|
}
|
|
|
|
|
|
|
|
#[derive(Debug)]
|
|
|
|
struct OffsetVec {
|
|
|
|
vec: Vec<u8>,
|
|
|
|
offset: usize,
|
|
|
|
len: usize,
|
|
|
|
}
|
|
|
|
|
|
|
|
impl AsRef<[u8]> for OffsetVec {
|
|
|
|
fn as_ref(&self) -> &[u8] {
|
|
|
|
&self.vec[self.offset..(self.offset + self.len)]
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl AsMut<[u8]> for OffsetVec {
|
|
|
|
fn as_mut(&mut self) -> &mut [u8] {
|
|
|
|
&mut self.vec[self.offset..(self.offset + self.len)]
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl MccParse {
|
|
|
|
fn handle_buffer(
|
|
|
|
&self,
|
2020-11-15 13:50:12 +00:00
|
|
|
element: &super::MccParse,
|
2018-12-28 22:00:28 +00:00
|
|
|
buffer: Option<gst::Buffer>,
|
2019-03-22 14:08:54 +00:00
|
|
|
scan_tc_rate: bool,
|
2018-12-28 22:00:28 +00:00
|
|
|
) -> Result<gst::FlowSuccess, gst::FlowError> {
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
|
2022-01-12 17:51:08 +00:00
|
|
|
let drain = if let Some(buffer) = buffer {
|
2018-12-28 22:00:28 +00:00
|
|
|
let buffer = buffer.into_mapped_buffer_readable().map_err(|_| {
|
2020-12-20 18:43:45 +00:00
|
|
|
element_error!(
|
2018-12-28 22:00:28 +00:00
|
|
|
element,
|
|
|
|
gst::ResourceError::Read,
|
|
|
|
["Failed to map buffer readable"]
|
|
|
|
);
|
|
|
|
|
|
|
|
gst::FlowError::Error
|
|
|
|
})?;
|
|
|
|
|
|
|
|
state.reader.push(buffer);
|
2022-01-12 17:51:08 +00:00
|
|
|
false
|
2018-12-28 22:00:28 +00:00
|
|
|
} else {
|
2022-01-12 17:51:08 +00:00
|
|
|
true
|
|
|
|
};
|
2018-12-28 22:00:28 +00:00
|
|
|
|
|
|
|
loop {
|
2021-04-20 12:58:11 +00:00
|
|
|
let line = state.line(drain);
|
2018-12-28 22:00:28 +00:00
|
|
|
match line {
|
2019-03-22 14:08:54 +00:00
|
|
|
Ok(Some(MccLine::Caption(tc, Some(data)))) => {
|
|
|
|
assert!(!state.seeking);
|
|
|
|
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(
|
2019-01-21 19:45:00 +00:00
|
|
|
CAT,
|
2018-12-28 22:00:28 +00:00
|
|
|
obj: element,
|
|
|
|
"Got caption buffer with timecode {:?} and size {}",
|
|
|
|
tc,
|
|
|
|
data.len()
|
|
|
|
);
|
|
|
|
|
2019-03-22 14:08:54 +00:00
|
|
|
if scan_tc_rate {
|
2020-12-20 18:43:45 +00:00
|
|
|
element_error!(
|
2019-03-22 14:08:54 +00:00
|
|
|
element,
|
|
|
|
gst::StreamError::Decode,
|
|
|
|
["Found caption line while scanning for timecode rate"]
|
|
|
|
);
|
|
|
|
|
|
|
|
break Err(gst::FlowError::Error);
|
|
|
|
}
|
|
|
|
|
2018-12-28 22:00:28 +00:00
|
|
|
if data.len() < 3 {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(
|
2019-01-21 19:45:00 +00:00
|
|
|
CAT,
|
2018-12-28 22:00:28 +00:00
|
|
|
obj: element,
|
|
|
|
"Too small caption packet: {}",
|
|
|
|
data.len(),
|
|
|
|
);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
let format = match (data[0], data[1]) {
|
|
|
|
(0x61, 0x01) => Format::Cea708Cdp,
|
|
|
|
(0x61, 0x02) => Format::Cea608,
|
|
|
|
(did, sdid) => {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: element, "Unknown DID {:x} SDID {:x}", did, sdid);
|
2018-12-28 22:00:28 +00:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
let len = data[2];
|
|
|
|
if data.len() < 3 + len as usize {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(
|
2019-01-21 19:45:00 +00:00
|
|
|
CAT,
|
2018-12-28 22:00:28 +00:00
|
|
|
obj: element,
|
|
|
|
"Too small caption packet: {} < {}",
|
|
|
|
data.len(),
|
|
|
|
3 + len,
|
|
|
|
);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2019-01-21 19:45:00 +00:00
|
|
|
state = self.handle_line(element, tc, data, format, state)?;
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
2019-03-22 14:08:54 +00:00
|
|
|
Ok(Some(MccLine::Caption(tc, None))) => {
|
|
|
|
assert!(state.seeking);
|
|
|
|
|
|
|
|
if scan_tc_rate {
|
2020-12-20 18:43:45 +00:00
|
|
|
element_error!(
|
2019-03-22 14:08:54 +00:00
|
|
|
element,
|
|
|
|
gst::StreamError::Decode,
|
|
|
|
["Found caption line while scanning for timecode rate"]
|
|
|
|
);
|
|
|
|
|
|
|
|
break Err(gst::FlowError::Error);
|
|
|
|
}
|
|
|
|
|
|
|
|
state = self.handle_skipped_line(element, tc, state)?;
|
|
|
|
}
|
2018-12-28 22:00:28 +00:00
|
|
|
Ok(Some(MccLine::TimeCodeRate(rate, df))) => {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(
|
2019-01-21 19:45:00 +00:00
|
|
|
CAT,
|
2018-12-28 22:00:28 +00:00
|
|
|
obj: element,
|
|
|
|
"Got timecode rate {} (drop frame {})",
|
|
|
|
rate,
|
|
|
|
df
|
|
|
|
);
|
|
|
|
state.timecode_rate = Some((rate, df));
|
2019-03-22 14:08:54 +00:00
|
|
|
|
|
|
|
if scan_tc_rate {
|
|
|
|
break Ok(gst::FlowSuccess::Ok);
|
|
|
|
}
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
|
|
|
Ok(Some(line)) => {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: element, "Got line '{:?}'", line);
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
|
|
|
Err((line, err)) => {
|
2020-12-20 18:43:45 +00:00
|
|
|
element_error!(
|
2018-12-28 22:00:28 +00:00
|
|
|
element,
|
|
|
|
gst::StreamError::Decode,
|
|
|
|
["Couldn't parse line '{:?}': {:?}", line, err]
|
|
|
|
);
|
|
|
|
|
|
|
|
break Err(gst::FlowError::Error);
|
|
|
|
}
|
2019-03-22 14:08:54 +00:00
|
|
|
Ok(None) => {
|
|
|
|
if scan_tc_rate {
|
2020-12-20 18:43:45 +00:00
|
|
|
element_error!(
|
2019-03-22 14:08:54 +00:00
|
|
|
element,
|
|
|
|
gst::StreamError::Decode,
|
|
|
|
["Found end of input while scanning for timecode rate"]
|
|
|
|
);
|
|
|
|
|
|
|
|
break Err(gst::FlowError::Error);
|
|
|
|
}
|
|
|
|
|
|
|
|
if drain && state.pull.is_some() {
|
|
|
|
break Err(gst::FlowError::Eos);
|
|
|
|
}
|
|
|
|
break Ok(gst::FlowSuccess::Ok);
|
|
|
|
}
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-03-22 14:08:54 +00:00
|
|
|
fn handle_skipped_line(
|
|
|
|
&self,
|
2020-11-15 13:50:12 +00:00
|
|
|
element: &super::MccParse,
|
2019-03-22 14:08:54 +00:00
|
|
|
tc: TimeCode,
|
|
|
|
mut state: MutexGuard<State>,
|
|
|
|
) -> Result<MutexGuard<State>, gst::FlowError> {
|
|
|
|
let (framerate, drop_frame) = parse_timecode_rate(state.timecode_rate)?;
|
|
|
|
let timecode = state.handle_timecode(element, framerate, drop_frame, tc)?;
|
2021-06-04 17:06:24 +00:00
|
|
|
let nsecs = timecode.time_since_daily_jam();
|
2019-03-22 14:08:54 +00:00
|
|
|
|
|
|
|
state.last_timecode = Some(timecode);
|
|
|
|
|
2021-06-04 17:06:24 +00:00
|
|
|
if state
|
|
|
|
.segment
|
|
|
|
.start()
|
|
|
|
.map_or(false, |seg_start| nsecs >= seg_start)
|
|
|
|
{
|
2019-03-22 14:08:54 +00:00
|
|
|
state.seeking = false;
|
|
|
|
state.discont = true;
|
|
|
|
state.replay_last_line = true;
|
|
|
|
state.need_flush_stop = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
drop(state);
|
|
|
|
|
|
|
|
Ok(self.state.lock().unwrap())
|
|
|
|
}
|
|
|
|
|
2019-01-21 19:45:00 +00:00
|
|
|
fn handle_line(
|
|
|
|
&self,
|
2020-11-15 13:50:12 +00:00
|
|
|
element: &super::MccParse,
|
2019-01-21 19:45:00 +00:00
|
|
|
tc: TimeCode,
|
|
|
|
data: Vec<u8>,
|
|
|
|
format: Format,
|
|
|
|
mut state: MutexGuard<State>,
|
|
|
|
) -> Result<MutexGuard<State>, gst::FlowError> {
|
2019-03-22 14:08:54 +00:00
|
|
|
let (framerate, drop_frame) = parse_timecode_rate(state.timecode_rate)?;
|
2019-07-11 07:54:22 +00:00
|
|
|
let events = state.create_events(element, Some(format), framerate);
|
2019-03-22 14:08:54 +00:00
|
|
|
let timecode = state.handle_timecode(element, framerate, drop_frame, tc)?;
|
2019-01-21 19:45:00 +00:00
|
|
|
|
|
|
|
let len = data[2] as usize;
|
|
|
|
let mut buffer = gst::Buffer::from_mut_slice(OffsetVec {
|
|
|
|
vec: data,
|
|
|
|
offset: 3,
|
|
|
|
len,
|
|
|
|
});
|
|
|
|
|
2019-07-11 07:54:22 +00:00
|
|
|
state.add_buffer_metadata(element, &mut buffer, &timecode, framerate);
|
2019-01-21 19:45:00 +00:00
|
|
|
|
2019-01-25 23:41:12 +00:00
|
|
|
// Update the last_timecode to the current one
|
|
|
|
state.last_timecode = Some(timecode);
|
|
|
|
|
2022-07-04 16:04:11 +00:00
|
|
|
let send_eos = state
|
|
|
|
.segment
|
|
|
|
.stop()
|
|
|
|
.opt_lt(buffer.pts().opt_add(buffer.duration()))
|
|
|
|
.unwrap_or(false);
|
2019-03-22 14:08:54 +00:00
|
|
|
|
2019-01-21 19:45:00 +00:00
|
|
|
// Drop our state mutex while we push out buffers or events
|
|
|
|
drop(state);
|
|
|
|
|
|
|
|
for event in events {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: element, "Pushing event {:?}", event);
|
2019-01-21 19:45:00 +00:00
|
|
|
self.srcpad.push_event(event);
|
|
|
|
}
|
|
|
|
|
|
|
|
self.srcpad.push(buffer).map_err(|err| {
|
2022-05-03 12:32:07 +00:00
|
|
|
if err != gst::FlowError::Flushing && err != gst::FlowError::Eos {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::error!(CAT, obj: element, "Pushing buffer returned {:?}", err);
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
2019-01-21 19:45:00 +00:00
|
|
|
err
|
|
|
|
})?;
|
|
|
|
|
2019-03-22 14:08:54 +00:00
|
|
|
if send_eos {
|
|
|
|
return Err(gst::FlowError::Eos);
|
|
|
|
}
|
|
|
|
|
2019-01-21 19:45:00 +00:00
|
|
|
Ok(self.state.lock().unwrap())
|
|
|
|
}
|
|
|
|
|
2019-03-22 14:08:54 +00:00
|
|
|
fn sink_activate(
|
|
|
|
&self,
|
|
|
|
pad: &gst::Pad,
|
2020-11-15 13:50:12 +00:00
|
|
|
element: &super::MccParse,
|
2019-03-22 14:08:54 +00:00
|
|
|
) -> Result<(), gst::LoggableError> {
|
|
|
|
let mode = {
|
2020-06-24 22:33:57 +00:00
|
|
|
let mut query = gst::query::Scheduling::new();
|
2019-03-22 14:08:54 +00:00
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
|
|
|
|
state.pull = None;
|
|
|
|
|
|
|
|
if !pad.peer_query(&mut query) {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: pad, "Scheduling query failed on peer");
|
2019-03-22 14:08:54 +00:00
|
|
|
gst::PadMode::Push
|
|
|
|
} else if query
|
|
|
|
.has_scheduling_mode_with_flags(gst::PadMode::Pull, gst::SchedulingFlags::SEEKABLE)
|
|
|
|
{
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: pad, "Activating in Pull mode");
|
2019-03-22 14:08:54 +00:00
|
|
|
|
|
|
|
state.pull = Some(PullState::new(element, &self.srcpad));
|
|
|
|
|
|
|
|
gst::PadMode::Pull
|
|
|
|
} else {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: pad, "Activating in Push mode");
|
2019-03-22 14:08:54 +00:00
|
|
|
gst::PadMode::Push
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
pad.activate_mode(mode, true)?;
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
2020-11-15 13:50:12 +00:00
|
|
|
fn start_task(&self, element: &super::MccParse) -> Result<(), gst::LoggableError> {
|
2019-03-22 14:08:54 +00:00
|
|
|
let element_weak = element.downgrade();
|
|
|
|
let pad_weak = self.sinkpad.downgrade();
|
2019-11-24 22:00:27 +00:00
|
|
|
let res = self.sinkpad.start_task(move || {
|
2019-03-22 14:08:54 +00:00
|
|
|
let element = match element_weak.upgrade() {
|
|
|
|
Some(element) => element,
|
|
|
|
None => {
|
|
|
|
if let Some(pad) = pad_weak.upgrade() {
|
2020-12-07 10:45:54 +00:00
|
|
|
let _ = pad.pause_task();
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
2022-01-17 17:36:41 +00:00
|
|
|
let parse = element.imp();
|
2019-03-22 14:08:54 +00:00
|
|
|
parse.loop_fn(&element);
|
2019-11-24 22:00:27 +00:00
|
|
|
});
|
|
|
|
if res.is_err() {
|
2020-12-20 18:43:45 +00:00
|
|
|
return Err(loggable_error!(CAT, "Failed to start pad task"));
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
|
|
|
fn sink_activatemode(
|
|
|
|
&self,
|
|
|
|
_pad: &gst::Pad,
|
2020-11-15 13:50:12 +00:00
|
|
|
element: &super::MccParse,
|
2019-03-22 14:08:54 +00:00
|
|
|
mode: gst::PadMode,
|
|
|
|
active: bool,
|
|
|
|
) -> Result<(), gst::LoggableError> {
|
2019-09-07 07:42:07 +00:00
|
|
|
if mode == gst::PadMode::Pull {
|
|
|
|
if active {
|
2019-03-22 14:08:54 +00:00
|
|
|
self.start_task(element)?;
|
2019-09-07 07:42:07 +00:00
|
|
|
} else {
|
2019-03-22 14:08:54 +00:00
|
|
|
let _ = self.sinkpad.stop_task();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
Ok(())
|
|
|
|
}
|
|
|
|
|
|
|
|
fn scan_duration(
|
|
|
|
&self,
|
2020-11-15 13:50:12 +00:00
|
|
|
element: &super::MccParse,
|
2019-03-22 14:08:54 +00:00
|
|
|
) -> Result<Option<ValidVideoTimeCode>, gst::LoggableError> {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: element, "Scanning duration");
|
2019-03-22 14:08:54 +00:00
|
|
|
|
|
|
|
/* First let's query the bytes duration upstream */
|
2020-06-24 22:33:57 +00:00
|
|
|
let mut q = gst::query::Duration::new(gst::Format::Bytes);
|
2019-03-22 14:08:54 +00:00
|
|
|
|
|
|
|
if !self.sinkpad.peer_query(&mut q) {
|
2020-12-20 18:43:45 +00:00
|
|
|
return Err(loggable_error!(CAT, "Failed to query upstream duration"));
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
|
2021-04-12 12:49:54 +00:00
|
|
|
let size = match q.result().try_into().unwrap() {
|
2021-06-04 17:06:24 +00:00
|
|
|
Some(gst::format::Bytes(size)) => size,
|
|
|
|
None => {
|
2020-12-20 18:43:45 +00:00
|
|
|
return Err(loggable_error!(CAT, "Failed to query upstream duration"));
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
let mut offset = size;
|
|
|
|
let mut buffers = Vec::new();
|
|
|
|
let mut last_tc = None;
|
|
|
|
|
|
|
|
loop {
|
|
|
|
let scan_size = cmp::min(offset, 4096);
|
|
|
|
|
|
|
|
offset -= scan_size;
|
|
|
|
|
|
|
|
match self.sinkpad.pull_range(offset, scan_size as u32) {
|
|
|
|
Ok(buffer) => {
|
|
|
|
buffers.push(buffer);
|
|
|
|
}
|
|
|
|
Err(flow) => {
|
2020-12-20 18:43:45 +00:00
|
|
|
return Err(loggable_error!(
|
2019-03-22 14:08:54 +00:00
|
|
|
CAT,
|
|
|
|
"Failed to pull buffer while scanning duration: {:?}",
|
|
|
|
flow
|
|
|
|
));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
let mut reader = LineReader::new();
|
|
|
|
let mut parser = MccParser::new_scan_captions();
|
|
|
|
|
|
|
|
for buf in buffers.iter().rev() {
|
|
|
|
let buf = buf
|
|
|
|
.clone()
|
|
|
|
.into_mapped_buffer_readable()
|
2020-12-20 18:43:45 +00:00
|
|
|
.map_err(|_| loggable_error!(CAT, "Failed to map buffer readable"))?;
|
2019-03-22 14:08:54 +00:00
|
|
|
|
|
|
|
reader.push(buf);
|
|
|
|
}
|
|
|
|
|
2021-04-20 12:58:11 +00:00
|
|
|
while let Some(line) = reader.line_with_drain(true) {
|
2019-11-24 22:00:27 +00:00
|
|
|
if let Ok(MccLine::Caption(tc, None)) =
|
|
|
|
parser.parse_line(line, false).map_err(|err| (line, err))
|
|
|
|
{
|
|
|
|
let state = self.state.lock().unwrap();
|
|
|
|
let (framerate, drop_frame) = parse_timecode_rate(state.timecode_rate)
|
2020-12-20 18:43:45 +00:00
|
|
|
.map_err(|_| loggable_error!(CAT, "Failed to parse timecode rate"))?;
|
2020-12-30 11:01:41 +00:00
|
|
|
if let Ok(mut timecode) = parse_timecode(framerate, drop_frame, tc) {
|
|
|
|
/* We're looking for the total duration */
|
|
|
|
timecode.increment_frame();
|
|
|
|
last_tc = Some(timecode);
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
}
|
2019-11-24 22:00:27 +00:00
|
|
|
/* We ignore everything else including errors */
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if last_tc.is_some() || offset == 0 {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(
|
2019-03-22 14:08:54 +00:00
|
|
|
CAT,
|
|
|
|
obj: element,
|
|
|
|
"Duration scan done, last_tc: {:?}",
|
|
|
|
last_tc
|
|
|
|
);
|
|
|
|
break (Ok(last_tc));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-11-15 13:50:12 +00:00
|
|
|
fn push_eos(&self, element: &super::MccParse) {
|
2019-03-22 14:08:54 +00:00
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
|
|
|
|
if state.seeking {
|
|
|
|
state.need_flush_stop = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
match parse_timecode_rate(state.timecode_rate) {
|
|
|
|
Ok((framerate, _)) => {
|
2019-07-11 07:54:22 +00:00
|
|
|
let mut events = state.create_events(element, None, framerate);
|
2020-06-24 22:33:57 +00:00
|
|
|
let mut eos_event = gst::event::Eos::builder();
|
2019-03-22 14:08:54 +00:00
|
|
|
|
2020-01-24 23:20:37 +00:00
|
|
|
if let Some(seek_seqnum) = state.seek_seqnum {
|
|
|
|
eos_event = eos_event.seqnum(seek_seqnum);
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
events.push(eos_event.build());
|
|
|
|
|
|
|
|
// Drop our state mutex while we push out events
|
|
|
|
drop(state);
|
|
|
|
|
|
|
|
for event in events {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: element, "Pushing event {:?}", event);
|
2019-03-22 14:08:54 +00:00
|
|
|
self.srcpad.push_event(event);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
Err(_) => {
|
2020-12-20 18:43:45 +00:00
|
|
|
element_error!(
|
2019-03-22 14:08:54 +00:00
|
|
|
element,
|
|
|
|
gst::StreamError::Failed,
|
|
|
|
["Streaming stopped, failed to parse timecode rate"]
|
|
|
|
);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-11-15 13:50:12 +00:00
|
|
|
fn loop_fn(&self, element: &super::MccParse) {
|
2019-03-22 14:08:54 +00:00
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
let State {
|
|
|
|
timecode_rate: ref tc_rate,
|
|
|
|
ref mut pull,
|
|
|
|
..
|
|
|
|
} = *state;
|
|
|
|
let mut pull = pull.as_mut().unwrap();
|
|
|
|
let scan_tc_rate = tc_rate.is_none() && pull.duration.is_none();
|
|
|
|
let offset = pull.offset;
|
|
|
|
|
|
|
|
pull.offset += 4096;
|
|
|
|
|
|
|
|
drop(state);
|
|
|
|
|
|
|
|
let buffer = match self.sinkpad.pull_range(offset, 4096) {
|
|
|
|
Ok(buffer) => Some(buffer),
|
|
|
|
Err(gst::FlowError::Eos) => None,
|
|
|
|
Err(gst::FlowError::Flushing) => {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: &self.sinkpad, "Pausing after pulling buffer, reason: flushing");
|
2019-03-22 14:08:54 +00:00
|
|
|
|
2020-12-07 10:45:54 +00:00
|
|
|
let _ = self.sinkpad.pause_task();
|
2019-03-22 14:08:54 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
Err(flow) => {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::error!(CAT, obj: &self.sinkpad, "Failed to pull, reason: {:?}", flow);
|
2019-03-22 14:08:54 +00:00
|
|
|
|
2020-12-20 18:43:45 +00:00
|
|
|
element_error!(
|
2019-03-22 14:08:54 +00:00
|
|
|
element,
|
|
|
|
gst::StreamError::Failed,
|
|
|
|
["Streaming stopped, failed to pull buffer"]
|
|
|
|
);
|
|
|
|
|
2020-12-07 10:45:54 +00:00
|
|
|
let _ = self.sinkpad.pause_task();
|
2019-03-22 14:08:54 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
match self.handle_buffer(element, buffer, scan_tc_rate) {
|
|
|
|
Ok(_) => {
|
|
|
|
let tc_rate = self.state.lock().unwrap().timecode_rate;
|
|
|
|
if scan_tc_rate && tc_rate.is_some() {
|
|
|
|
match self.scan_duration(element) {
|
|
|
|
Ok(Some(tc)) => {
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
let mut pull = state.pull.as_mut().unwrap();
|
2021-06-04 17:06:24 +00:00
|
|
|
pull.duration = Some(tc.time_since_daily_jam());
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
Ok(None) => {
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
let mut pull = state.pull.as_mut().unwrap();
|
2021-06-04 17:06:24 +00:00
|
|
|
pull.duration = Some(gst::ClockTime::ZERO);
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
Err(err) => {
|
|
|
|
err.log();
|
|
|
|
|
2020-12-20 18:43:45 +00:00
|
|
|
element_error!(
|
2019-03-22 14:08:54 +00:00
|
|
|
element,
|
|
|
|
gst::StreamError::Decode,
|
|
|
|
["Failed to scan duration"]
|
|
|
|
);
|
|
|
|
|
2020-12-07 10:45:54 +00:00
|
|
|
let _ = self.sinkpad.pause_task();
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
Err(flow) => {
|
|
|
|
match flow {
|
|
|
|
gst::FlowError::Flushing => {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: element, "Pausing after flow {:?}", flow);
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
gst::FlowError::Eos => {
|
|
|
|
self.push_eos(element);
|
|
|
|
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: element, "Pausing after flow {:?}", flow);
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
_ => {
|
|
|
|
self.push_eos(element);
|
|
|
|
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::error!(CAT, obj: element, "Pausing after flow {:?}", flow);
|
2019-03-22 14:08:54 +00:00
|
|
|
|
2020-12-20 18:43:45 +00:00
|
|
|
element_error!(
|
2019-03-22 14:08:54 +00:00
|
|
|
element,
|
|
|
|
gst::StreamError::Failed,
|
|
|
|
["Streaming stopped, reason: {:?}", flow]
|
|
|
|
);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-12-07 10:45:54 +00:00
|
|
|
let _ = self.sinkpad.pause_task();
|
2019-03-22 14:08:54 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2018-12-28 22:00:28 +00:00
|
|
|
fn sink_chain(
|
|
|
|
&self,
|
|
|
|
pad: &gst::Pad,
|
2020-11-15 13:50:12 +00:00
|
|
|
element: &super::MccParse,
|
2018-12-28 22:00:28 +00:00
|
|
|
buffer: gst::Buffer,
|
|
|
|
) -> Result<gst::FlowSuccess, gst::FlowError> {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::log!(CAT, obj: pad, "Handling buffer {:?}", buffer);
|
2018-12-28 22:00:28 +00:00
|
|
|
|
2019-03-22 14:08:54 +00:00
|
|
|
self.handle_buffer(element, Some(buffer), false)
|
|
|
|
}
|
|
|
|
|
|
|
|
fn flush(&self, mut state: MutexGuard<State>) -> MutexGuard<State> {
|
|
|
|
state.reader.clear();
|
|
|
|
state.parser.reset();
|
|
|
|
if let Some(pull) = &mut state.pull {
|
|
|
|
pull.offset = 0;
|
|
|
|
}
|
2021-06-04 17:06:24 +00:00
|
|
|
state.segment = gst::FormattedSegment::new();
|
2019-03-22 14:08:54 +00:00
|
|
|
state.need_segment = true;
|
|
|
|
state.pending_events.clear();
|
2021-06-04 17:06:24 +00:00
|
|
|
state.start_position = Some(gst::ClockTime::ZERO);
|
|
|
|
state.last_position = None;
|
2019-03-22 14:08:54 +00:00
|
|
|
state.last_timecode = None;
|
|
|
|
state.timecode_rate = None;
|
|
|
|
state.last_raw_line = [].to_vec();
|
|
|
|
|
|
|
|
drop(state);
|
|
|
|
|
|
|
|
self.state.lock().unwrap()
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
|
|
|
|
2020-11-15 13:50:12 +00:00
|
|
|
fn sink_event(&self, pad: &gst::Pad, element: &super::MccParse, event: gst::Event) -> bool {
|
2018-12-28 22:00:28 +00:00
|
|
|
use gst::EventView;
|
|
|
|
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::log!(CAT, obj: pad, "Handling event {:?}", event);
|
2018-12-28 22:00:28 +00:00
|
|
|
|
|
|
|
match event.view() {
|
|
|
|
EventView::Caps(_) => {
|
|
|
|
// We send a proper caps event from the chain function later
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::log!(CAT, obj: pad, "Dropping caps event");
|
2018-12-28 22:00:28 +00:00
|
|
|
true
|
|
|
|
}
|
|
|
|
EventView::Segment(_) => {
|
|
|
|
// We send a gst::Format::Time segment event later when needed
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::log!(CAT, obj: pad, "Dropping segment event");
|
2018-12-28 22:00:28 +00:00
|
|
|
true
|
|
|
|
}
|
|
|
|
EventView::FlushStop(_) => {
|
2019-03-22 14:08:54 +00:00
|
|
|
let state = self.state.lock().unwrap();
|
2020-04-24 10:55:01 +00:00
|
|
|
let state = self.flush(state);
|
|
|
|
drop(state);
|
2018-12-28 22:00:28 +00:00
|
|
|
|
2019-05-23 20:55:54 +00:00
|
|
|
pad.event_default(Some(element), event)
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
|
|
|
EventView::Eos(_) => {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::log!(CAT, obj: pad, "Draining");
|
2019-03-22 14:08:54 +00:00
|
|
|
if let Err(err) = self.handle_buffer(element, None, false) {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::error!(CAT, obj: pad, "Failed to drain parser: {:?}", err);
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
2019-05-23 20:55:54 +00:00
|
|
|
pad.event_default(Some(element), event)
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
|
|
|
_ => {
|
|
|
|
if event.is_sticky()
|
|
|
|
&& !self.srcpad.has_current_caps()
|
2021-04-12 12:49:54 +00:00
|
|
|
&& event.type_() > gst::EventType::Caps
|
2018-12-28 22:00:28 +00:00
|
|
|
{
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::log!(CAT, obj: pad, "Deferring sticky event until we have caps");
|
2018-12-28 22:00:28 +00:00
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
state.pending_events.push(event);
|
|
|
|
true
|
|
|
|
} else {
|
2019-05-23 20:55:54 +00:00
|
|
|
pad.event_default(Some(element), event)
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2022-01-22 10:18:02 +00:00
|
|
|
fn perform_seek(&self, event: &gst::event::Seek, element: &super::MccParse) -> bool {
|
2020-12-02 22:13:55 +00:00
|
|
|
if self.state.lock().unwrap().pull.is_none() {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::error!(CAT, obj: element, "seeking is only supported in pull mode");
|
2019-03-22 14:08:54 +00:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
let (rate, flags, start_type, start, stop_type, stop) = event.get();
|
|
|
|
|
2021-06-04 17:06:24 +00:00
|
|
|
let mut start: Option<gst::ClockTime> = match start.try_into() {
|
2019-03-22 14:08:54 +00:00
|
|
|
Ok(start) => start,
|
|
|
|
Err(_) => {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::error!(CAT, obj: element, "seek has invalid format");
|
2019-03-22 14:08:54 +00:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
2021-06-04 17:06:24 +00:00
|
|
|
let mut stop: Option<gst::ClockTime> = match stop.try_into() {
|
2019-03-22 14:08:54 +00:00
|
|
|
Ok(stop) => stop,
|
|
|
|
Err(_) => {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::error!(CAT, obj: element, "seek has invalid format");
|
2019-03-22 14:08:54 +00:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
if !flags.contains(gst::SeekFlags::FLUSH) {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::error!(CAT, obj: element, "only flushing seeks are supported");
|
2019-03-22 14:08:54 +00:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
if start_type == gst::SeekType::End || stop_type == gst::SeekType::End {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::error!(CAT, obj: element, "Relative seeks are not supported");
|
2019-03-22 14:08:54 +00:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2021-04-12 12:49:54 +00:00
|
|
|
let seek_seqnum = event.seqnum();
|
2019-03-22 14:08:54 +00:00
|
|
|
|
2020-06-24 22:33:57 +00:00
|
|
|
let event = gst::event::FlushStart::builder()
|
|
|
|
.seqnum(seek_seqnum)
|
|
|
|
.build();
|
2019-03-22 14:08:54 +00:00
|
|
|
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: element, "Sending event {:?} upstream", event);
|
2019-03-22 14:08:54 +00:00
|
|
|
self.sinkpad.push_event(event);
|
|
|
|
|
2020-06-24 22:33:57 +00:00
|
|
|
let event = gst::event::FlushStart::builder()
|
|
|
|
.seqnum(seek_seqnum)
|
|
|
|
.build();
|
2019-03-22 14:08:54 +00:00
|
|
|
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: element, "Pushing event {:?}", event);
|
2019-03-22 14:08:54 +00:00
|
|
|
self.srcpad.push_event(event);
|
|
|
|
|
2020-12-07 10:45:54 +00:00
|
|
|
let _ = self.sinkpad.pause_task();
|
2019-03-22 14:08:54 +00:00
|
|
|
|
2020-12-02 22:13:55 +00:00
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
let pull = state.pull.as_ref().unwrap();
|
|
|
|
|
|
|
|
if start_type == gst::SeekType::Set {
|
2021-10-09 10:17:05 +00:00
|
|
|
start = start.opt_min(pull.duration).or(start);
|
2020-12-02 22:13:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if stop_type == gst::SeekType::Set {
|
2021-10-09 10:17:05 +00:00
|
|
|
stop = stop.opt_min(pull.duration).or(stop);
|
2020-12-02 22:13:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
state.seeking = true;
|
|
|
|
state.seek_seqnum = Some(seek_seqnum);
|
|
|
|
|
2019-03-22 14:08:54 +00:00
|
|
|
state = self.flush(state);
|
|
|
|
|
2020-06-24 22:33:57 +00:00
|
|
|
let event = gst::event::FlushStop::builder(true)
|
|
|
|
.seqnum(seek_seqnum)
|
|
|
|
.build();
|
2019-03-22 14:08:54 +00:00
|
|
|
|
|
|
|
/* Drop our state while we push a serialized event upstream */
|
|
|
|
drop(state);
|
|
|
|
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::debug!(CAT, obj: element, "Sending event {:?} upstream", event);
|
2019-03-22 14:08:54 +00:00
|
|
|
self.sinkpad.push_event(event);
|
|
|
|
|
|
|
|
state = self.state.lock().unwrap();
|
|
|
|
|
|
|
|
state
|
|
|
|
.segment
|
|
|
|
.do_seek(rate, flags, start_type, start, stop_type, stop);
|
|
|
|
|
|
|
|
match self.start_task(element) {
|
|
|
|
Err(error) => {
|
|
|
|
error.log();
|
|
|
|
false
|
|
|
|
}
|
|
|
|
_ => true,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-11-15 13:50:12 +00:00
|
|
|
fn src_event(&self, pad: &gst::Pad, element: &super::MccParse, event: gst::Event) -> bool {
|
2018-12-28 22:00:28 +00:00
|
|
|
use gst::EventView;
|
|
|
|
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::log!(CAT, obj: pad, "Handling event {:?}", event);
|
2018-12-28 22:00:28 +00:00
|
|
|
match event.view() {
|
2022-01-19 13:07:45 +00:00
|
|
|
EventView::Seek(e) => self.perform_seek(e, element),
|
2019-05-23 20:55:54 +00:00
|
|
|
_ => pad.event_default(Some(element), event),
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-11-15 13:50:12 +00:00
|
|
|
fn src_query(
|
|
|
|
&self,
|
|
|
|
pad: &gst::Pad,
|
|
|
|
element: &super::MccParse,
|
|
|
|
query: &mut gst::QueryRef,
|
|
|
|
) -> bool {
|
2022-01-19 13:07:45 +00:00
|
|
|
use gst::QueryViewMut;
|
2018-12-28 22:00:28 +00:00
|
|
|
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::log!(CAT, obj: pad, "Handling query {:?}", query);
|
2018-12-28 22:00:28 +00:00
|
|
|
|
|
|
|
match query.view_mut() {
|
2022-01-19 13:07:45 +00:00
|
|
|
QueryViewMut::Seeking(q) => {
|
2019-03-22 14:08:54 +00:00
|
|
|
let state = self.state.lock().unwrap();
|
|
|
|
|
2021-04-12 12:49:54 +00:00
|
|
|
let fmt = q.format();
|
2019-03-22 14:08:54 +00:00
|
|
|
|
|
|
|
if fmt == gst::Format::Time {
|
|
|
|
if let Some(pull) = state.pull.as_ref() {
|
2022-07-04 16:04:11 +00:00
|
|
|
q.set(true, gst::ClockTime::ZERO, pull.duration);
|
2019-03-22 14:08:54 +00:00
|
|
|
true
|
|
|
|
} else {
|
|
|
|
false
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
false
|
|
|
|
}
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
2022-01-19 13:07:45 +00:00
|
|
|
QueryViewMut::Position(q) => {
|
2018-12-28 22:00:28 +00:00
|
|
|
// For Time answer ourselfs, otherwise forward
|
2021-04-12 12:49:54 +00:00
|
|
|
if q.format() == gst::Format::Time {
|
2018-12-28 22:00:28 +00:00
|
|
|
let state = self.state.lock().unwrap();
|
|
|
|
q.set(state.last_position);
|
|
|
|
true
|
|
|
|
} else {
|
|
|
|
self.sinkpad.peer_query(query)
|
|
|
|
}
|
|
|
|
}
|
2022-01-19 13:07:45 +00:00
|
|
|
QueryViewMut::Duration(q) => {
|
2019-03-22 14:08:54 +00:00
|
|
|
// For Time answer ourselfs, otherwise forward
|
|
|
|
let state = self.state.lock().unwrap();
|
2021-04-12 12:49:54 +00:00
|
|
|
if q.format() == gst::Format::Time {
|
2019-03-22 14:08:54 +00:00
|
|
|
if let Some(pull) = state.pull.as_ref() {
|
|
|
|
if pull.duration.is_some() {
|
|
|
|
q.set(state.pull.as_ref().unwrap().duration);
|
|
|
|
true
|
|
|
|
} else {
|
|
|
|
false
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
false
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
self.sinkpad.peer_query(query)
|
|
|
|
}
|
|
|
|
}
|
2019-05-23 20:55:54 +00:00
|
|
|
_ => pad.query_default(Some(element), query),
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-03-07 16:22:24 +00:00
|
|
|
#[glib::object_subclass]
|
2018-12-28 22:00:28 +00:00
|
|
|
impl ObjectSubclass for MccParse {
|
|
|
|
const NAME: &'static str = "RsMccParse";
|
2020-11-15 13:50:12 +00:00
|
|
|
type Type = super::MccParse;
|
2018-12-28 22:00:28 +00:00
|
|
|
type ParentType = gst::Element;
|
|
|
|
|
2020-11-15 13:50:12 +00:00
|
|
|
fn with_class(klass: &Self::Class) -> Self {
|
2021-04-20 12:58:11 +00:00
|
|
|
let templ = klass.pad_template("sink").unwrap();
|
2020-06-22 08:03:52 +00:00
|
|
|
let sinkpad = gst::Pad::builder_with_template(&templ, Some("sink"))
|
|
|
|
.activate_function(|pad, parent| {
|
|
|
|
MccParse::catch_panic_pad_function(
|
|
|
|
parent,
|
2020-12-20 18:43:45 +00:00
|
|
|
|| Err(loggable_error!(CAT, "Panic activating sink pad")),
|
2020-06-22 08:03:52 +00:00
|
|
|
|parse, element| parse.sink_activate(pad, element),
|
|
|
|
)
|
|
|
|
})
|
|
|
|
.activatemode_function(|pad, parent, mode, active| {
|
|
|
|
MccParse::catch_panic_pad_function(
|
|
|
|
parent,
|
2020-12-20 18:43:45 +00:00
|
|
|
|| Err(loggable_error!(CAT, "Panic activating sink pad with mode")),
|
2020-06-22 08:03:52 +00:00
|
|
|
|parse, element| parse.sink_activatemode(pad, element, mode, active),
|
|
|
|
)
|
|
|
|
})
|
|
|
|
.chain_function(|pad, parent, buffer| {
|
|
|
|
MccParse::catch_panic_pad_function(
|
|
|
|
parent,
|
|
|
|
|| Err(gst::FlowError::Error),
|
|
|
|
|parse, element| parse.sink_chain(pad, element, buffer),
|
|
|
|
)
|
|
|
|
})
|
|
|
|
.event_function(|pad, parent, event| {
|
|
|
|
MccParse::catch_panic_pad_function(
|
|
|
|
parent,
|
|
|
|
|| false,
|
|
|
|
|parse, element| parse.sink_event(pad, element, event),
|
|
|
|
)
|
|
|
|
})
|
|
|
|
.build();
|
2018-12-28 22:00:28 +00:00
|
|
|
|
2021-04-20 12:58:11 +00:00
|
|
|
let templ = klass.pad_template("src").unwrap();
|
2020-06-22 08:03:52 +00:00
|
|
|
let srcpad = gst::Pad::builder_with_template(&templ, Some("src"))
|
|
|
|
.event_function(|pad, parent, event| {
|
|
|
|
MccParse::catch_panic_pad_function(
|
|
|
|
parent,
|
|
|
|
|| false,
|
|
|
|
|parse, element| parse.src_event(pad, element, event),
|
|
|
|
)
|
|
|
|
})
|
|
|
|
.query_function(|pad, parent, query| {
|
|
|
|
MccParse::catch_panic_pad_function(
|
|
|
|
parent,
|
|
|
|
|| false,
|
|
|
|
|parse, element| parse.src_query(pad, element, query),
|
|
|
|
)
|
|
|
|
})
|
|
|
|
.build();
|
2018-12-28 22:00:28 +00:00
|
|
|
|
|
|
|
Self {
|
|
|
|
srcpad,
|
|
|
|
sinkpad,
|
|
|
|
state: Mutex::new(State::default()),
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl ObjectImpl for MccParse {
|
2020-11-15 13:50:12 +00:00
|
|
|
fn constructed(&self, obj: &Self::Type) {
|
2018-12-28 22:00:28 +00:00
|
|
|
self.parent_constructed(obj);
|
|
|
|
|
2020-11-15 13:50:12 +00:00
|
|
|
obj.add_pad(&self.sinkpad).unwrap();
|
|
|
|
obj.add_pad(&self.srcpad).unwrap();
|
2018-12-28 22:00:28 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-10-23 08:57:31 +00:00
|
|
|
impl GstObjectImpl for MccParse {}
|
|
|
|
|
2018-12-28 22:00:28 +00:00
|
|
|
impl ElementImpl for MccParse {
|
2021-01-21 18:21:29 +00:00
|
|
|
fn metadata() -> Option<&'static gst::subclass::ElementMetadata> {
|
|
|
|
static ELEMENT_METADATA: Lazy<gst::subclass::ElementMetadata> = Lazy::new(|| {
|
|
|
|
gst::subclass::ElementMetadata::new(
|
|
|
|
"Mcc Parse",
|
|
|
|
"Parser/ClosedCaption",
|
|
|
|
"Parses MCC Closed Caption Files",
|
|
|
|
"Sebastian Dröge <sebastian@centricular.com>",
|
|
|
|
)
|
|
|
|
});
|
|
|
|
|
|
|
|
Some(&*ELEMENT_METADATA)
|
|
|
|
}
|
|
|
|
|
|
|
|
fn pad_templates() -> &'static [gst::PadTemplate] {
|
|
|
|
static PAD_TEMPLATES: Lazy<Vec<gst::PadTemplate>> = Lazy::new(|| {
|
|
|
|
let mut caps = gst::Caps::new_empty();
|
|
|
|
{
|
|
|
|
let caps = caps.get_mut().unwrap();
|
|
|
|
let framerate = gst::FractionRange::new(
|
|
|
|
gst::Fraction::new(1, std::i32::MAX),
|
|
|
|
gst::Fraction::new(std::i32::MAX, 1),
|
|
|
|
);
|
|
|
|
|
|
|
|
let s = gst::Structure::builder("closedcaption/x-cea-708")
|
2021-11-06 07:34:10 +00:00
|
|
|
.field("format", "cdp")
|
|
|
|
.field("framerate", framerate)
|
2021-01-21 18:21:29 +00:00
|
|
|
.build();
|
|
|
|
caps.append_structure(s);
|
|
|
|
|
|
|
|
let s = gst::Structure::builder("closedcaption/x-cea-608")
|
2021-11-06 07:34:10 +00:00
|
|
|
.field("format", "s334-1a")
|
|
|
|
.field("framerate", framerate)
|
2021-01-21 18:21:29 +00:00
|
|
|
.build();
|
|
|
|
caps.append_structure(s);
|
|
|
|
}
|
|
|
|
let src_pad_template = gst::PadTemplate::new(
|
|
|
|
"src",
|
|
|
|
gst::PadDirection::Src,
|
|
|
|
gst::PadPresence::Always,
|
|
|
|
&caps,
|
|
|
|
)
|
|
|
|
.unwrap();
|
|
|
|
|
|
|
|
let caps = gst::Caps::builder("application/x-mcc")
|
2021-11-06 07:34:10 +00:00
|
|
|
.field("version", gst::List::new([1i32, 2i32]))
|
2021-01-21 18:21:29 +00:00
|
|
|
.build();
|
|
|
|
let sink_pad_template = gst::PadTemplate::new(
|
|
|
|
"sink",
|
|
|
|
gst::PadDirection::Sink,
|
|
|
|
gst::PadPresence::Always,
|
|
|
|
&caps,
|
|
|
|
)
|
|
|
|
.unwrap();
|
|
|
|
|
|
|
|
vec![src_pad_template, sink_pad_template]
|
|
|
|
});
|
|
|
|
|
|
|
|
PAD_TEMPLATES.as_ref()
|
|
|
|
}
|
|
|
|
|
2018-12-28 22:00:28 +00:00
|
|
|
fn change_state(
|
|
|
|
&self,
|
2020-11-15 13:50:12 +00:00
|
|
|
element: &Self::Type,
|
2018-12-28 22:00:28 +00:00
|
|
|
transition: gst::StateChange,
|
|
|
|
) -> Result<gst::StateChangeSuccess, gst::StateChangeError> {
|
2022-02-21 17:43:46 +00:00
|
|
|
gst::trace!(CAT, obj: element, "Changing state {:?}", transition);
|
2018-12-28 22:00:28 +00:00
|
|
|
|
|
|
|
match transition {
|
|
|
|
gst::StateChange::ReadyToPaused | gst::StateChange::PausedToReady => {
|
|
|
|
// Reset the whole state
|
|
|
|
let mut state = self.state.lock().unwrap();
|
|
|
|
*state = State::default();
|
|
|
|
}
|
|
|
|
_ => (),
|
|
|
|
}
|
|
|
|
|
|
|
|
self.parent_change_state(element, transition)
|
|
|
|
}
|
|
|
|
}
|