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debug: TEMP dump a screenshot ~3s into playback to isolate decode vs display

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This commit is contained in:
KhooLy 2026-06-18 17:59:49 +03:00
parent 7036fc5332
commit f714205e85
1 changed files with 22 additions and 1 deletions
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23
src-tauri/src/windows_player_surface.rs
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@ -388,13 +388,20 @@ fn spawn_install_thread(app_handle: AppHandle, setup_tx: mpsc::Sender<Result<Nat
let mut visible = false;
let mut last_size = (init_w, init_h);
let mut last_render_error: Option<String> = None;
// TEMP DEBUG: dump a screenshot a few seconds into playback to check
// whether decode itself is black or only the on-screen display is.
let mut frames_since_load: u32 = 0;
let mut took_debug_screenshot = false;
loop {
// Drain command channel.
while let Ok(cmd) = receiver.try_recv() {
match cmd {
SurfaceCommand::Load { url, start_at, .. } => {
log::info!("player surface: loading url={url} start_at={start_at:?}");
log::info!(
"player surface: loading url={url} start_at={start_at:?} surface_size={}x{}",
last_size.0, last_size.1
);
unsafe {
set_window_blur_behind(parent_hwnd, false);
ShowWindow(child_hwnd, SW_SHOW);
@ -411,6 +418,8 @@ fn spawn_install_thread(app_handle: AppHandle, setup_tx: mpsc::Sender<Result<Nat
)
};
visible = true;
frames_since_load = 0;
took_debug_screenshot = false;
let _ = app.emit("native-player-show", ());
let state = app.state::<DesktopState>();
*state.eof_next_fired.lock().unwrap() = false;
@ -490,6 +499,18 @@ fn spawn_install_thread(app_handle: AppHandle, setup_tx: mpsc::Sender<Result<Nat
} else {
last_render_error = None;
}
// TEMP DEBUG: see comment on frames_since_load above.
frames_since_load += 1;
if frames_since_load == 180 && !took_debug_screenshot {
took_debug_screenshot = true;
let path = std::env::temp_dir().join("fluxa_debug_frame.png");
let cmd = format!("screenshot-to-file \"{}\"", path.to_string_lossy().replace('\\', "/"));
if let Err(e) = r.command_string(&cmd) {
log::error!("player surface: debug screenshot failed: {e}");
} else {
log::info!("player surface: debug screenshot written to {}", path.display());
}
}
}
}
let swap_start = std::time::Instant::now();