gst-plugins-rs/utils/fallbackswitch/tests/fallbackswitch.rs

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// Copyright (C) 2019 Sebastian Dröge <sebastian@centricular.com>
// Copyright (C) 2021 Jan Schmidt <jan@centricular.com>
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//
// 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/>.
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//
// SPDX-License-Identifier: MPL-2.0
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use gst::debug;
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use gst::prelude::*;
use once_cell::sync::Lazy;
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const LATENCY: gst::ClockTime = gst::ClockTime::from_mseconds(10);
static TEST_CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
gst::DebugCategory::new(
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"fallbackswitch-test",
gst::DebugColorFlags::empty(),
Some("fallbackswitch test"),
)
});
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fn init() {
use std::sync::Once;
static INIT: Once = Once::new();
INIT.call_once(|| {
gst::init().unwrap();
gstfallbackswitch::plugin_register_static().expect("gstfallbackswitch test");
});
}
macro_rules! assert_fallback_buffer {
($buffer:expr, $ts:expr) => {
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assert_eq!($buffer.pts(), $ts);
assert_eq!($buffer.size(), 160 * 120 * 4);
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};
}
macro_rules! assert_buffer {
($buffer:expr, $ts:expr) => {
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assert_eq!($buffer.pts(), $ts);
assert_eq!($buffer.size(), 320 * 240 * 4);
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};
}
#[test]
fn test_no_fallback_no_drops() {
let pipeline = setup_pipeline(None, None, None);
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push_buffer(&pipeline, gst::ClockTime::ZERO);
set_time(&pipeline, gst::ClockTime::ZERO + LATENCY);
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let buffer = pull_buffer(&pipeline);
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assert_buffer!(buffer, Some(gst::ClockTime::ZERO));
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push_buffer(&pipeline, 1.seconds());
set_time(&pipeline, 1.seconds() + LATENCY);
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let buffer = pull_buffer(&pipeline);
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assert_buffer!(buffer, Some(gst::ClockTime::SECOND));
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push_buffer(&pipeline, 2.seconds());
set_time(&pipeline, 2.seconds() + LATENCY);
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let buffer = pull_buffer(&pipeline);
assert_buffer!(buffer, Some(2.seconds()));
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push_eos(&pipeline);
wait_eos(&pipeline);
stop_pipeline(pipeline);
}
#[test]
fn test_no_drops_live() {
test_no_drops(true);
}
#[test]
fn test_no_drops_not_live() {
test_no_drops(false);
}
fn test_no_drops(live: bool) {
let pipeline = setup_pipeline(Some(live), None, None);
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push_buffer(&pipeline, gst::ClockTime::ZERO);
push_fallback_buffer(&pipeline, gst::ClockTime::ZERO);
set_time(&pipeline, gst::ClockTime::ZERO + LATENCY);
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let buffer = pull_buffer(&pipeline);
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assert_buffer!(buffer, Some(gst::ClockTime::ZERO));
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push_fallback_buffer(&pipeline, 1.seconds());
push_buffer(&pipeline, 1.seconds());
set_time(&pipeline, 1.seconds() + LATENCY);
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let buffer = pull_buffer(&pipeline);
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assert_buffer!(buffer, Some(gst::ClockTime::SECOND));
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push_buffer(&pipeline, 2.seconds());
push_fallback_buffer(&pipeline, 2.seconds());
set_time(&pipeline, 2.seconds() + LATENCY);
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let buffer = pull_buffer(&pipeline);
assert_buffer!(buffer, Some(2.seconds()));
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// EOS on the fallback should not be required
push_eos(&pipeline);
wait_eos(&pipeline);
stop_pipeline(pipeline);
}
#[test]
fn test_no_drops_but_no_fallback_frames_live() {
test_no_drops_but_no_fallback_frames(true);
}
#[test]
fn test_no_drops_but_no_fallback_frames_not_live() {
test_no_drops_but_no_fallback_frames(false);
}
fn test_no_drops_but_no_fallback_frames(live: bool) {
let pipeline = setup_pipeline(Some(live), None, None);
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push_buffer(&pipeline, gst::ClockTime::ZERO);
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// +10ms needed here because the immediate timeout will be always at running time 0, but
// aggregator also adds the latency to it so we end up at 10ms instead.
set_time(&pipeline, LATENCY);
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let buffer = pull_buffer(&pipeline);
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assert_buffer!(buffer, Some(gst::ClockTime::ZERO));
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push_buffer(&pipeline, 1.seconds());
set_time(&pipeline, 1.seconds() + LATENCY);
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let buffer = pull_buffer(&pipeline);
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assert_buffer!(buffer, Some(gst::ClockTime::SECOND));
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push_buffer(&pipeline, 2.seconds());
set_time(&pipeline, 2.seconds() + LATENCY);
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let buffer = pull_buffer(&pipeline);
assert_buffer!(buffer, Some(2.seconds()));
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// EOS on the fallback should not be required
push_eos(&pipeline);
wait_eos(&pipeline);
stop_pipeline(pipeline);
}
#[test]
fn test_short_drop_live() {
test_short_drop(true);
}
#[test]
fn test_short_drop_not_live() {
test_short_drop(false);
}
fn test_short_drop(live: bool) {
let pipeline = setup_pipeline(Some(live), None, None);
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push_buffer(&pipeline, gst::ClockTime::ZERO);
push_fallback_buffer(&pipeline, gst::ClockTime::ZERO);
set_time(&pipeline, gst::ClockTime::ZERO + LATENCY);
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let buffer = pull_buffer(&pipeline);
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assert_buffer!(buffer, Some(gst::ClockTime::ZERO));
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// A timeout at 1s will get rid of the fallback buffer
// but not output anything
push_fallback_buffer(&pipeline, 1.seconds());
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// Time out the fallback buffer at +10ms
set_time(&pipeline, 1.seconds() + 10.mseconds());
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push_fallback_buffer(&pipeline, 2.seconds());
push_buffer(&pipeline, 2.seconds());
set_time(&pipeline, 2.seconds() + LATENCY);
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let buffer = pull_buffer(&pipeline);
assert_buffer!(buffer, Some(2.seconds()));
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push_eos(&pipeline);
push_fallback_eos(&pipeline);
wait_eos(&pipeline);
stop_pipeline(pipeline);
}
#[test]
fn test_long_drop_and_eos_live() {
test_long_drop_and_eos(true);
}
#[test]
fn test_long_drop_and_eos_not_live() {
test_long_drop_and_eos(false);
}
fn test_long_drop_and_eos(live: bool) {
let pipeline = setup_pipeline(Some(live), None, None);
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// Produce the first frame
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push_buffer(&pipeline, gst::ClockTime::ZERO);
push_fallback_buffer(&pipeline, gst::ClockTime::ZERO);
set_time(&pipeline, gst::ClockTime::ZERO);
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let buffer = pull_buffer(&pipeline);
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assert_buffer!(buffer, Some(gst::ClockTime::ZERO));
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// Produce a second frame but only from the fallback source
push_fallback_buffer(&pipeline, 1.seconds());
set_time(&pipeline, 1.seconds() + 10.mseconds());
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// Produce a third frame but only from the fallback source
push_fallback_buffer(&pipeline, 2.seconds());
set_time(&pipeline, 2.seconds() + 10.mseconds());
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// Produce a fourth frame but only from the fallback source
// This should be output now
push_fallback_buffer(&pipeline, 3.seconds());
set_time(&pipeline, 3.seconds() + 10.mseconds());
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let buffer = pull_buffer(&pipeline);
assert_fallback_buffer!(buffer, Some(3.seconds()));
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// Produce a fifth frame but only from the fallback source
// This should be output now
push_fallback_buffer(&pipeline, 4.seconds());
set_time(&pipeline, 4.seconds() + 10.mseconds());
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let buffer = pull_buffer(&pipeline);
assert_fallback_buffer!(buffer, Some(4.seconds()));
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// Wait for EOS to arrive at appsink
push_eos(&pipeline);
push_fallback_eos(&pipeline);
wait_eos(&pipeline);
stop_pipeline(pipeline);
}
#[test]
fn test_long_drop_and_recover_live() {
test_long_drop_and_recover(true);
}
#[test]
fn test_long_drop_and_recover_not_live() {
test_long_drop_and_recover(false);
}
fn test_long_drop_and_recover(live: bool) {
let pipeline = setup_pipeline(Some(live), None, None);
let switch = pipeline.by_name("switch").unwrap();
let mainsink = switch.static_pad("sink_0").unwrap();
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// Produce the first frame
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push_buffer(&pipeline, gst::ClockTime::ZERO);
push_fallback_buffer(&pipeline, gst::ClockTime::ZERO);
set_time(&pipeline, gst::ClockTime::ZERO);
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let buffer = pull_buffer(&pipeline);
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assert_buffer!(buffer, Some(gst::ClockTime::ZERO));
assert!(mainsink.property::<bool>("is-healthy"));
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// Produce a second frame but only from the fallback source
push_fallback_buffer(&pipeline, 1.seconds());
set_time(&pipeline, 1.seconds() + 10.mseconds());
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// Produce a third frame but only from the fallback source
push_fallback_buffer(&pipeline, 2.seconds());
set_time(&pipeline, 2.seconds() + 10.mseconds());
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// Produce a fourth frame but only from the fallback source
// This should be output now
push_fallback_buffer(&pipeline, 3.seconds());
set_time(&pipeline, 3.seconds() + 10.mseconds());
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let buffer = pull_buffer(&pipeline);
assert_fallback_buffer!(buffer, Some(3.seconds()));
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// Produce a fifth frame but only from the fallback source
// This should be output now
push_fallback_buffer(&pipeline, 4.seconds());
set_time(&pipeline, 4.seconds() + 10.mseconds());
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let buffer = pull_buffer(&pipeline);
assert_fallback_buffer!(buffer, Some(4.seconds()));
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// Produce a sixth frame from the normal source
push_buffer(&pipeline, 5.seconds());
set_time(&pipeline, 5.seconds() + 10.mseconds());
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let buffer = pull_buffer(&pipeline);
assert_buffer!(buffer, Some(5.seconds()));
assert!(!mainsink.property::<bool>("is-healthy"));
drop(mainsink);
drop(switch);
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// Produce a seventh frame from the normal source but no fallback.
// This should still be output immediately
push_buffer(&pipeline, 6.seconds());
set_time(&pipeline, 6.seconds() + 10.mseconds());
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let buffer = pull_buffer(&pipeline);
assert_buffer!(buffer, Some(6.seconds()));
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// Produce a eight frame from the normal source
push_buffer(&pipeline, 7.seconds());
push_fallback_buffer(&pipeline, 7.seconds());
set_time(&pipeline, 7.seconds() + 10.mseconds());
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let buffer = pull_buffer(&pipeline);
assert_buffer!(buffer, Some(7.seconds()));
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// Wait for EOS to arrive at appsink
push_eos(&pipeline);
push_fallback_eos(&pipeline);
wait_eos(&pipeline);
stop_pipeline(pipeline);
}
#[test]
fn test_initial_timeout_live() {
test_initial_timeout(true);
}
#[test]
fn test_initial_timeout_not_live() {
test_initial_timeout(false);
}
fn test_initial_timeout(live: bool) {
let pipeline = setup_pipeline(Some(live), None, None);
// Produce the first frame but only from the fallback source
push_fallback_buffer(&pipeline, gst::ClockTime::ZERO);
set_time(&pipeline, gst::ClockTime::ZERO);
// Produce a second frame but only from the fallback source
push_fallback_buffer(&pipeline, 1.seconds());
set_time(&pipeline, 1.seconds() + 10.mseconds());
// Produce a third frame but only from the fallback source
push_fallback_buffer(&pipeline, 2.seconds());
set_time(&pipeline, 2.seconds() + 10.mseconds());
// Produce a fourth frame but only from the fallback source
// This should be output now
push_fallback_buffer(&pipeline, 3.seconds());
set_time(&pipeline, 3.seconds() + 10.mseconds());
let buffer = pull_buffer(&pipeline);
assert_fallback_buffer!(buffer, Some(3.seconds()));
// Produce a fifth frame but only from the fallback source
// This should be output now
push_fallback_buffer(&pipeline, 4.seconds());
set_time(&pipeline, 4.seconds() + 10.mseconds());
let buffer = pull_buffer(&pipeline);
assert_fallback_buffer!(buffer, Some(4.seconds()));
// Wait for EOS to arrive at appsink
push_eos(&pipeline);
push_fallback_eos(&pipeline);
wait_eos(&pipeline);
stop_pipeline(pipeline);
}
#[test]
fn test_immediate_fallback_live() {
test_immediate_fallback(true);
}
#[test]
fn test_immediate_fallback_not_live() {
test_immediate_fallback(false);
}
fn test_immediate_fallback(live: bool) {
let pipeline = setup_pipeline(Some(live), Some(true), None);
// Produce the first frame but only from the fallback source
push_fallback_buffer(&pipeline, gst::ClockTime::ZERO);
set_time(&pipeline, gst::ClockTime::ZERO);
let buffer = pull_buffer(&pipeline);
assert_fallback_buffer!(buffer, Some(gst::ClockTime::ZERO));
// Wait for EOS to arrive at appsink
push_eos(&pipeline);
push_fallback_eos(&pipeline);
wait_eos(&pipeline);
stop_pipeline(pipeline);
}
#[test]
fn test_manual_switch_live() {
test_manual_switch(true);
}
#[test]
fn test_manual_switch_not_live() {
test_manual_switch(false);
}
fn test_manual_switch(live: bool) {
let pipeline = setup_pipeline(Some(live), None, Some(false));
let switch = pipeline.by_name("switch").unwrap();
let mainsink = switch.static_pad("sink_0").unwrap();
let fallbacksink = switch.static_pad("sink_1").unwrap();
switch.set_property("active-pad", &mainsink);
push_buffer(&pipeline, gst::ClockTime::ZERO);
push_fallback_buffer(&pipeline, gst::ClockTime::ZERO);
set_time(&pipeline, gst::ClockTime::ZERO + LATENCY);
let buffer = pull_buffer(&pipeline);
assert_buffer!(buffer, Some(gst::ClockTime::ZERO));
switch.set_property("active-pad", &fallbacksink);
push_fallback_buffer(&pipeline, 1.seconds());
push_buffer(&pipeline, 1.seconds());
set_time(&pipeline, 1.seconds() + LATENCY);
let mut buffer = pull_buffer(&pipeline);
// FIXME: Sometimes we first get the ZERO buffer from the fallback sink
if buffer.pts() == Some(gst::ClockTime::ZERO) {
buffer = pull_buffer(&pipeline);
}
assert_fallback_buffer!(buffer, Some(gst::ClockTime::SECOND));
switch.set_property("active-pad", &mainsink);
push_buffer(&pipeline, 2.seconds());
push_fallback_buffer(&pipeline, 2.seconds());
set_time(&pipeline, 2.seconds() + LATENCY);
buffer = pull_buffer(&pipeline);
// FIXME: Sometimes we first get the 1sec buffer from the main sink
if buffer.pts() == Some(gst::ClockTime::SECOND) {
buffer = pull_buffer(&pipeline);
}
assert_buffer!(buffer, Some(2.seconds()));
drop(mainsink);
drop(fallbacksink);
drop(switch);
// EOS on the fallback should not be required
push_eos(&pipeline);
wait_eos(&pipeline);
stop_pipeline(pipeline);
}
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struct Pipeline {
pipeline: gst::Pipeline,
clock_join_handle: Option<std::thread::JoinHandle<()>>,
}
impl std::ops::Deref for Pipeline {
type Target = gst::Pipeline;
fn deref(&self) -> &gst::Pipeline {
&self.pipeline
}
}
fn setup_pipeline(
with_live_fallback: Option<bool>,
immediate_fallback: Option<bool>,
auto_switch: Option<bool>,
) -> Pipeline {
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init();
debug!(TEST_CAT, "Setting up pipeline");
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let clock = gst_check::TestClock::new();
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clock.set_time(gst::ClockTime::ZERO);
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let pipeline = gst::Pipeline::default();
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// Running time 0 in our pipeline is going to be clock time 1s. All
// clock ids before 1s are used for signalling to our clock advancing
// thread.
pipeline.use_clock(Some(&clock));
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pipeline.set_base_time(gst::ClockTime::SECOND);
pipeline.set_start_time(gst::ClockTime::NONE);
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let src = gst_app::AppSrc::builder()
.name("src")
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.is_live(true)
.format(gst::Format::Time)
.min_latency(LATENCY.nseconds() as i64)
.caps(
&gst_video::VideoCapsBuilder::new()
.format(gst_video::VideoFormat::Argb)
.width(320)
.height(240)
.framerate((0, 1).into())
.build(),
)
.build();
let switch = gst::ElementFactory::make("fallbackswitch")
.name("switch")
.property("timeout", 3.seconds())
.build()
.unwrap();
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if let Some(imm) = immediate_fallback {
switch.set_property("immediate-fallback", imm);
}
if let Some(auto_switch) = auto_switch {
switch.set_property("auto-switch", auto_switch);
}
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let sink = gst_app::AppSink::builder().name("sink").sync(false).build();
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let queue = gst::ElementFactory::make("queue").build().unwrap();
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pipeline
.add_many(&[src.upcast_ref(), &switch, &queue, sink.upcast_ref()])
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.unwrap();
src.link_pads(Some("src"), &switch, Some("sink_0")).unwrap();
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switch.link_pads(Some("src"), &queue, Some("sink")).unwrap();
queue.link_pads(Some("src"), &sink, Some("sink")).unwrap();
let sink_pad = switch.static_pad("sink_0").unwrap();
sink_pad.set_property("priority", 0u32);
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if let Some(live) = with_live_fallback {
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let fallback_src = gst_app::AppSrc::builder()
.name("fallback-src")
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.is_live(live)
.format(gst::Format::Time)
.min_latency(LATENCY.nseconds() as i64)
.caps(
&gst_video::VideoCapsBuilder::new()
.format(gst_video::VideoFormat::Argb)
.width(160)
.height(120)
.framerate((0, 1).into())
.build(),
)
.build();
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pipeline.add(&fallback_src).unwrap();
fallback_src
.link_pads(Some("src"), &switch, Some("sink_1"))
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.unwrap();
let sink_pad = switch.static_pad("sink_1").unwrap();
sink_pad.set_property("priority", 1u32);
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}
pipeline.set_state(gst::State::Playing).unwrap();
let clock_join_handle = std::thread::spawn(move || {
loop {
while let Some(clock_id) = clock.peek_next_pending_id().and_then(|clock_id| {
// Process if the clock ID is in the past or now
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if clock.time().map_or(false, |time| time >= clock_id.time()) {
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Some(clock_id)
} else {
None
}
}) {
debug!(
TEST_CAT,
"Processing clock ID {} at {:?}",
clock_id.time(),
clock.time()
);
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if let Some(clock_id) = clock.process_next_clock_id() {
debug!(TEST_CAT, "Processed clock ID {}", clock_id.time());
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if clock_id.time().is_zero() {
debug!(TEST_CAT, "Stopping clock thread");
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return;
}
}
}
// Sleep for 5ms as long as we have pending clock IDs that are in the future
// at the top of the queue. We don't want to do a busy loop here.
while clock.peek_next_pending_id().iter().any(|clock_id| {
// Sleep if the clock ID is in the future
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// FIXME probably can expect clock.time()
clock
.time()
.map_or(true, |clock_time| clock_time < clock_id.time())
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}) {
use std::{thread, time};
thread::sleep(time::Duration::from_millis(10));
}
// Otherwise if there are none (or they are ready now) wait until there are
// clock ids again
let _ = clock.wait_for_next_pending_id();
}
});
Pipeline {
pipeline,
clock_join_handle: Some(clock_join_handle),
}
}
fn push_buffer(pipeline: &Pipeline, time: gst::ClockTime) {
let src = pipeline
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.by_name("src")
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.unwrap()
.downcast::<gst_app::AppSrc>()
.unwrap();
let mut buffer = gst::Buffer::with_size(320 * 240 * 4).unwrap();
{
let buffer = buffer.get_mut().unwrap();
buffer.set_pts(time);
}
src.push_buffer(buffer).unwrap();
}
fn push_fallback_buffer(pipeline: &Pipeline, time: gst::ClockTime) {
let src = pipeline
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.by_name("fallback-src")
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.unwrap()
.downcast::<gst_app::AppSrc>()
.unwrap();
let mut buffer = gst::Buffer::with_size(160 * 120 * 4).unwrap();
{
let buffer = buffer.get_mut().unwrap();
buffer.set_pts(time);
}
src.push_buffer(buffer).unwrap();
}
fn push_eos(pipeline: &Pipeline) {
let src = pipeline
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.by_name("src")
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.unwrap()
.downcast::<gst_app::AppSrc>()
.unwrap();
src.end_of_stream().unwrap();
}
fn push_fallback_eos(pipeline: &Pipeline) {
let src = pipeline
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.by_name("fallback-src")
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.unwrap()
.downcast::<gst_app::AppSrc>()
.unwrap();
src.end_of_stream().unwrap();
}
fn pull_buffer(pipeline: &Pipeline) -> gst::Buffer {
let sink = pipeline
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.by_name("sink")
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.unwrap()
.downcast::<gst_app::AppSink>()
.unwrap();
let sample = sink.pull_sample().unwrap();
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sample.buffer_owned().unwrap()
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}
fn set_time(pipeline: &Pipeline, time: gst::ClockTime) {
let clock = pipeline
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.clock()
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.unwrap()
.downcast::<gst_check::TestClock>()
.unwrap();
debug!(TEST_CAT, "Setting time to {}", time);
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clock.set_time(gst::ClockTime::SECOND + time);
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}
fn wait_eos(pipeline: &Pipeline) {
let sink = pipeline
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.by_name("sink")
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.unwrap()
.downcast::<gst_app::AppSink>()
.unwrap();
// FIXME: Ideally without a sleep
loop {
use std::{thread, time};
if sink.is_eos() {
debug!(TEST_CAT, "Waited for EOS");
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break;
}
thread::sleep(time::Duration::from_millis(10));
}
}
fn stop_pipeline(mut pipeline: Pipeline) {
pipeline.set_state(gst::State::Null).unwrap();
let clock = pipeline
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.clock()
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.unwrap()
.downcast::<gst_check::TestClock>()
.unwrap();
// Signal shutdown to the clock thread
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let clock_id = clock.new_single_shot_id(gst::ClockTime::ZERO);
let _ = clock_id.wait();
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let switch = pipeline.by_name("switch").unwrap();
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let switch_weak = switch.downgrade();
drop(switch);
let pipeline_weak = pipeline.downgrade();
pipeline.clock_join_handle.take().unwrap().join().unwrap();
drop(pipeline);
assert!(switch_weak.upgrade().is_none());
assert!(pipeline_weak.upgrade().is_none());
}