Struct SceneChangeDetector
pub struct SceneChangeDetector<T: Pixel> { pub intra_costs: Option<BTreeMap<usize, Box<[u32]>>>, /* private fields */ }Runs keyframe detection on frames from the lookahead queue.
This struct is intended for advanced users who need the ability to analyze
a small subset of frames at a time, for example in a streaming fashion.
Most users will prefer to use new_detector and detect_scene_changes
at the top level of this crate.
Fields
intra_costs: Option<BTreeMap<usize, Box<[u32]>>>Calculated intra costs for each input frame. These can be cached for reuse by advanced API users. Caching will occur if this is not
None.
Implementations
impl<T: Pixel> SceneChangeDetector<T>
fn new(resolution: (usize, usize), bit_depth: usize, frame_rate: Rational32, chroma_sampling: ChromaSampling, lookahead_distance: usize, scene_detection_mode: SceneDetectionSpeed, min_key_frame_interval: usize, max_key_frame_interval: usize, cpu_feature_level: CpuFeatureLevel) -> SelfCreates a new instance of the
SceneChangeDetector.fn enable_cache(&mut self)Enables caching of intra costs. For advanced API users.
fn analyze_next_frame(&mut self, frame_set: &[&Arc<Frame<T>>], input_frameno: usize, previous_keyframe: usize) -> boolRuns keyframe detection on the next frame in the lookahead queue.
This function requires that a subset of input frames is passed to it in order, and that
keyframesis only updated from this method.input_framenoshould correspond to the second frame inframe_set.This will gracefully handle the first frame in the video as well.
Auto Trait Implementations
impl<T> Freeze for SceneChangeDetector<T>
where
Option<ScaleFunction<T>>: Freeze,
Option<[Plane<T>; 2]>: Freeze,
Option<Plane<T>>: Freeze,
impl<T> RefUnwindSafe for SceneChangeDetector<T>
where
Option<ScaleFunction<T>>: RefUnwindSafe,
Option<[Plane<T>; 2]>: RefUnwindSafe,
Option<Plane<T>>: RefUnwindSafe,
impl<T> Send for SceneChangeDetector<T>
where
Option<ScaleFunction<T>>: Send,
Option<[Plane<T>; 2]>: Send,
Option<Plane<T>>: Send,
impl<T> Sync for SceneChangeDetector<T>
where
Option<ScaleFunction<T>>: Sync,
Option<[Plane<T>; 2]>: Sync,
Option<Plane<T>>: Sync,
impl<T> Unpin for SceneChangeDetector<T>
where
Option<ScaleFunction<T>>: Unpin,
Option<[Plane<T>; 2]>: Unpin,
Option<Plane<T>>: Unpin,
impl<T> UnsafeUnpin for SceneChangeDetector<T>
where
Option<ScaleFunction<T>>: UnsafeUnpin,
Option<[Plane<T>; 2]>: UnsafeUnpin,
Option<Plane<T>>: UnsafeUnpin,
impl<T> UnwindSafe for SceneChangeDetector<T>
where
Option<ScaleFunction<T>>: UnwindSafe,
Option<[Plane<T>; 2]>: UnwindSafe,
Option<Plane<T>>: UnwindSafe,
Blanket Implementations
impl<T> Any for SceneChangeDetector<T>
where
T: 'static + ?Sized,
fn type_id(&self) -> TypeId
impl<T> Borrow<T> for SceneChangeDetector<T>
where
T: ?Sized,
fn borrow(&self) -> &T
impl<T> BorrowMut<T> for SceneChangeDetector<T>
where
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
impl<T> From<T> for SceneChangeDetector<T>
fn from(t: T) -> TReturns the argument unchanged.
impl<T> IntoEither for SceneChangeDetector<T>
impl<T> Pointable for SceneChangeDetector<T>
const ALIGN: usize = _;type Init = T;unsafe fn init(init: <T as Pointable>::Init) -> usizeunsafe fn deref<'a>(ptr: usize) -> &'a Tunsafe fn deref_mut<'a>(ptr: usize) -> &'a mut Tunsafe fn drop(ptr: usize)
impl<T, U> Into<U> for SceneChangeDetector<T>
where
U: From<T>,
fn into(self) -> UCalls
U::from(self).That is, this conversion is whatever the implementation of
[From]<T> for Uchooses to do.
impl<T, U> TryFrom<U> for SceneChangeDetector<T>
where
U: Into<T>,
type Error = Infallible;fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
impl<T, U> TryInto<U> for SceneChangeDetector<T>
where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error;fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>