Struct PreviewDiagnostics 

pub struct PreviewDiagnostics {
    pub frames_received: AtomicU64,
    pub source_width: AtomicU32,
    pub source_height: AtomicU32,
    pub source_fps_hundredths: AtomicU32,
    pub first_frame_dump_path: Mutex<Option<PathBuf>>,
}

Tauri-managed diagnostic counters for the camera pipeline.

All counters reset on start_preview so the user gets a fresh-from-zero ticker each session — easier to eyeball “the number is going up” without comparing against a baseline.

Fields

frames_received: AtomicU64

Number of frames the worker has pulled from gst since the current session started. Resets on each start_preview.

source_width: AtomicU32

Source frame width in pixels (as reported by gst’s caps negotiation). 0 until first frame.

source_height: AtomicU32

Source frame height in pixels. 0 until first frame.

source_fps_hundredths: AtomicU32

Source framerate × 100 (encoded as integer for atomic storage; 30 fps → 3000, 29.97 → 2997). 0 until known.

first_frame_dump_path: Mutex<Option<PathBuf>>

Path of the first-frame PNG dump, if one has been written this session. None until first frame dumps successfully.

Implementations

impl PreviewDiagnostics

pub fn reset(&self)

Reset all counters. Called on every start_preview so the user sees a fresh ticker per session.

pub fn record_frame(&self)

Record that one frame just arrived. Worker thread calls this on every successful next_frame().

pub fn record_source(&self, width: u32, height: u32, fps: f64)

Record the source dims + fps once they’re known (after the gst caps negotiation completes — practically, on opening the stream). Cheap to call repeatedly with the same values.

pub fn try_claim_dump_slot(&self, path: PathBuf) -> bool

Set the first-frame dump path (one-shot). Returns true on the first call (caller should encode + write the PNG), false on subsequent calls (already dumped this session).

pub fn snapshot(&self) -> DiagnosticsSnapshot

Read a serialisable snapshot. The IPC command returns this; Leptos polls every 500ms.

Trait Implementations

impl Default for PreviewDiagnostics

fn default() -> PreviewDiagnostics

Returns the “default value” for a type.