gst-plugins-rs/video/closedcaption/tests/mcc_parse.rs

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// Copyright (C) 2018 Sebastian Dröge <sebastian@centricular.com>
//
// 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/>.
//
// SPDX-License-Identifier: MPL-2.0
#![allow(clippy::single_match)]
use gst::prelude::*;
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use gst::EventView;
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use pretty_assertions::assert_eq;
use rand::{Rng, SeedableRng};
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use std::path::PathBuf;
fn init() {
use std::sync::Once;
static INIT: Once = Once::new();
INIT.call_once(|| {
gst::init().unwrap();
gstrsclosedcaption::plugin_register_static().expect("mccparse test");
});
}
/// Randomized test passing buffers of arbitrary sizes to the parser
#[test]
fn test_parse() {
init();
let mut data = include_bytes!("captions-test_708.mcc").as_ref();
let mut rnd = if let Ok(seed) = std::env::var("MCC_PARSE_TEST_SEED") {
rand::rngs::SmallRng::seed_from_u64(
seed.parse::<u64>()
.expect("MCC_PARSE_TEST_SEED has to contain a 64 bit integer seed"),
)
} else {
let seed = rand::random::<u64>();
println!("seed {seed}");
rand::rngs::SmallRng::seed_from_u64(seed)
};
let mut h = gst_check::Harness::new("mccparse");
h.set_src_caps_str("application/x-mcc, version=(int) 1");
let mut input_len = 0;
let mut output_len = 0;
let mut checksum = 0u32;
let mut expected_timecode = None;
while !data.is_empty() {
let l = if data.len() == 1 {
1
} else {
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rnd.gen_range(1..=data.len())
};
let buf = gst::Buffer::from_mut_slice(Vec::from(&data[0..l]));
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input_len += buf.size();
assert_eq!(h.push(buf), Ok(gst::FlowSuccess::Ok));
while let Some(buf) = h.try_pull() {
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output_len += buf.size();
checksum = checksum.wrapping_add(
buf.map_readable()
.unwrap()
.iter()
.fold(0u32, |s, v| s.wrapping_add(*v as u32)),
);
let tc_meta = buf
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.meta::<gst_video::VideoTimeCodeMeta>()
.expect("No timecode meta");
if let Some(ref timecode) = expected_timecode {
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assert_eq!(&tc_meta.tc(), timecode);
} else {
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expected_timecode = Some(tc_meta.tc());
}
if let Some(ref mut tc) = expected_timecode {
tc.increment_frame();
}
}
data = &data[l..];
}
h.push_event(gst::event::Eos::new());
while let Some(buf) = h.try_pull() {
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output_len += buf.size();
checksum = checksum.wrapping_add(
buf.map_readable()
.unwrap()
.iter()
.fold(0u32, |s, v| s.wrapping_add(*v as u32)),
);
let tc_meta = buf
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.meta::<gst_video::VideoTimeCodeMeta>()
.expect("No timecode meta");
if let Some(ref timecode) = expected_timecode {
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assert_eq!(&tc_meta.tc(), timecode);
} else {
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expected_timecode = Some(tc_meta.tc());
}
if let Some(ref mut tc) = expected_timecode {
tc.increment_frame();
}
}
assert!(expected_timecode.is_some());
assert_eq!(input_len, 28_818);
assert_eq!(output_len, 42_383);
assert_eq!(checksum, 3_988_480);
let caps = h
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.sinkpad()
.expect("harness has no sinkpad")
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.current_caps()
.expect("pad has no caps");
assert_eq!(
caps,
gst::Caps::builder("closedcaption/x-cea-708")
.field("format", "cdp")
.field("framerate", gst::Fraction::new(30000, 1001))
.build()
);
}
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#[test]
fn test_pull() {
init();
let mut path = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
path.push("tests/captions-test_708.mcc");
let mut h = gst_check::Harness::new_parse(&format!("filesrc location={path:?} ! mccparse"));
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h.play();
/* Let's first pull until EOS */
loop {
let mut done = false;
while h.events_in_queue() != 0 {
let event = h.pull_event();
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if let Ok(event) = event {
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match event.view() {
EventView::Eos(_) => {
done = true;
break;
}
_ => (),
}
}
}
while h.buffers_in_queue() != 0 {
let _ = h.pull();
}
if done {
break;
}
}
/* Now seek and check that we receive buffers with appropriate PTS */
h.push_upstream_event(gst::event::Seek::new(
1.0,
gst::SeekFlags::FLUSH,
gst::SeekType::Set,
gst::ClockTime::SECOND,
gst::SeekType::Set,
2.seconds(),
));
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loop {
let mut done = false;
while h.buffers_in_queue() != 0 {
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if let Ok(buffer) = h.pull() {
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let pts = buffer.pts().unwrap();
assert!(pts > gst::ClockTime::SECOND && pts < 2.seconds());
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}
}
while h.events_in_queue() != 0 {
let event = h.pull_event();
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if let Ok(event) = event {
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match event.view() {
EventView::Eos(_) => {
done = true;
break;
}
_ => (),
}
}
}
if done {
break;
}
}
}