leyoda/cosmic-player
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Calculate video drift all the way in application update

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This commit is contained in:
Jeremy Soller 2024-01-25 15:47:09 -07:00
parent 56e3939861
commit b3689dd693
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GPG key ID: DCFCA852D3906975
2 changed files with 32 additions and 24 deletions
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26
src/main.rs
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@ -20,7 +20,7 @@ use std::{
path::PathBuf,
process,
sync::{mpsc, Arc, Mutex},
time::Instant,
time::{Duration, Instant},
};
use config::{AppTheme, Config, CONFIG_VERSION};
@ -295,7 +295,7 @@ impl Application for App {
Message::SystemThemeModeChange(_theme_mode) => {
return self.update_config();
}
Message::Tick(_time) => {
Message::Tick(frame_time) => {
let start = Instant::now();
let video_frame_opt = {
@ -303,8 +303,11 @@ impl Application for App {
//TODO: show frames at desired presentation time instead of clearing
let mut video_frame_opt = video_frames.pop_front();
while video_frames.len() >= 4 {
if let Some(video_frame) = video_frames.pop_front() {
video_frame_opt = Some(video_frame);
if let Some(extra_frame) = video_frames.pop_front() {
if let Some(old_frame) = video_frame_opt {
log::warn!("skipping video frame {:?}", old_frame.0.pts());
}
video_frame_opt = Some(extra_frame);
}
}
video_frame_opt
@ -312,6 +315,7 @@ impl Application for App {
match video_frame_opt {
Some(video_frame) => {
let pts = video_frame.0.pts();
let present_time_opt = video_frame.1;
self.handle_opt = Some(video_frame.into_handle());
let duration = start.elapsed();
@ -320,6 +324,20 @@ impl Application for App {
pts,
duration
);
if let Some(present_time) = present_time_opt {
if present_time > frame_time {
let ahead = present_time - frame_time;
if ahead > Duration::from_millis(1) {
log::debug!("video ahead {:?}", ahead);
}
} else {
let behind = frame_time - present_time;
if behind > Duration::from_millis(1) {
log::debug!("video behind {:?}", behind);
}
}
}
}
None => {}
}

30
src/player.rs
View file

@ -32,7 +32,7 @@ pub enum PlayerMessage {
SeekRelative(f64),
}
pub struct VideoFrame(pub Video);
pub struct VideoFrame(pub Video, pub Option<Instant>);
impl VideoFrame {
pub fn into_handle(self) -> widget::image::Handle {
@ -170,8 +170,6 @@ fn ffmpeg_thread<P: AsRef<Path>>(
let video_width = video_decoder.width();
let video_height = video_decoder.height();
let (cpu_frame_tx, cpu_frame_rx) = mpsc::channel::<(Video, Option<Instant>)>();
let min_sleep = Duration::from_millis(1);
let min_skip = Duration::from_millis(1);
thread::Builder::new()
.name("video_scale".to_string())
.spawn(move || {
@ -212,27 +210,19 @@ fn ffmpeg_thread<P: AsRef<Path>>(
video_scaler.run(&cpu_frame, &mut scaled_frame).unwrap();
scaled_frame.set_pts(pts_opt);
if let Some(pts) = pts_opt {
let present_time_opt = if let Some(pts) = pts_opt {
let expected_float = pts as f64 * video_time_base;
let expected = Duration::from_secs_f64(expected_float);
if let Some(sync_time) = &sync_time_opt {
// Sync with audio
let actual = sync_time.elapsed();
if expected > actual {
let sleep = expected - actual;
if sleep > min_sleep {
log::debug!("video ahead {:?}", sleep);
}
} else {
let skip = actual - expected;
if skip > min_skip {
log::debug!("video behind {:?}", skip);
}
}
if let Some(sync_time) = sync_time_opt {
Some(sync_time + expected)
} else {
None
}
}
} else {
None
};
let video_frame = VideoFrame(scaled_frame);
let video_frame = VideoFrame(scaled_frame, present_time_opt);
{
let mut video_frames = video_frames_lock.lock().unwrap();
video_frames.push_back(video_frame);