Struct DctOps 

pub struct DctOps<S: SimdOps> { /* private fields */ }

DCT operations using SIMD.

Implementations

impl<S: SimdOps> DctOps<S>

pub const fn new(simd: S) -> Self

Create a new DCT operations instance.

pub const fn simd(&self) -> &S

Get the underlying SIMD implementation.

impl<S: SimdOps + SimdOpsExt> DctOps<S>

pub fn forward_dct_4x4(&self, input: &[i16; 16], output: &mut [i16; 16])

Forward 4x4 DCT.

Transforms a 4x4 block of residuals to frequency coefficients.

Arguments

• input - 4x4 input block (row-major)
• output - 4x4 output coefficients (row-major)

pub fn inverse_dct_4x4(&self, input: &[i16; 16], output: &mut [i16; 16])

Inverse 4x4 DCT.

Transforms 4x4 frequency coefficients back to spatial domain.

Arguments

• input - 4x4 input coefficients (row-major)
• output - 4x4 output block (row-major)

pub fn forward_dct_8x8(&self, input: &[i16; 64], output: &mut [i16; 64])

Forward 8x8 DCT.

pub fn inverse_dct_8x8(&self, input: &[i16; 64], output: &mut [i16; 64])

Inverse 8x8 DCT.

pub fn forward_dct_16x16(&self, input: &[i16; 256], output: &mut [i16; 256])

Forward 16x16 DCT using recursive decomposition.

Decomposes into 4 8x8 DCTs for efficiency.

pub fn inverse_dct_16x16(&self, input: &[i16; 256], output: &mut [i16; 256])

Inverse 16x16 DCT.

pub fn forward_dct_32x32(&self, input: &[i16; 1024], output: &mut [i16; 1024])

Forward 32x32 DCT.

pub fn inverse_dct_32x32(&self, input: &[i16; 1024], output: &mut [i16; 1024])

Inverse 32x32 DCT.

pub fn butterfly_add(&self, a: I16x8, b: I16x8) -> I16x8

Butterfly operation for DCT.

pub fn butterfly_sub(&self, a: I16x8, b: I16x8) -> I16x8

Butterfly operation for DCT (subtraction).

pub fn dct_madd(&self, a: I16x8, coeff: I16x8) -> I32x4

Multiply-add for DCT coefficients.

Trait Implementations

impl<S: SimdOps + Default> Default for DctOps<S>

fn default() -> Self

Returns the “default value” for a type.