Struct CodedFrameData

pub struct CodedFrameData<T: Pixel> {
    pub lookahead_rec_buffer: ReferenceFramesSet<T>,
    pub w_in_imp_b: usize,
    pub h_in_imp_b: usize,
    pub lookahead_intra_costs: Box<[u32]>,
    pub block_importances: Box<[f32]>,
    pub distortion_scales: Box<[DistortionScale]>,
    pub activity_scales: Box<[DistortionScale]>,
    pub activity_mask: ActivityMask,
    pub spatiotemporal_scores: Box<[DistortionScale]>,
}

These frame invariants are only used on coded frames, i.e. non-SEFs. They are stored separately to avoid useless allocations when we do not need them.

Currently this consists only of lookahaed data. This may change in the future.

Fields

lookahead_rec_buffer: ReferenceFramesSet<T>

The lookahead version of rec_buffer, used for storing and propagating the original reference frames (rather than reconstructed ones). The lookahead uses both rec_buffer and lookahead_rec_buffer, where rec_buffer contains the current frame’s reference frames and lookahead_rec_buffer contains the next frame’s reference frames.

w_in_imp_b: usize

Frame width in importance blocks.

h_in_imp_b: usize

Frame height in importance blocks.

lookahead_intra_costs: Box<[u32]>

Intra prediction cost estimations for each importance block.

block_importances: Box<[f32]>

Future importance values for each importance block. That is, a value indicating how much future frames depend on the block (for example, via inter-prediction).

distortion_scales: Box<[DistortionScale]>

Pre-computed distortion_scale.

activity_scales: Box<[DistortionScale]>

Pre-computed activity_scale.

activity_mask: ActivityMask

spatiotemporal_scores: Box<[DistortionScale]>

Combined metric of activity and distortion

Implementations

impl<T: Pixel> CodedFrameData<T>

pub fn new(fi: &FrameInvariants<T>) -> CodedFrameData<T>

pub fn compute_spatiotemporal_scores(&mut self) -> i64

pub fn compute_temporal_scores(&mut self) -> i64

Trait Implementations

impl<T: Clone + Pixel> Clone for CodedFrameData<T>

fn clone(&self) -> CodedFrameData<T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug + Pixel> Debug for CodedFrameData<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.