Functions
void	av1_cdef_frame (YV12_BUFFER_CONFIG frame, AV1_COMMON const cm, MACROBLOCKD *xd, cdef_init_fb_row_t cdef_init_fb_row_fn)
	Function for applying CDEF to a frame.

void	av1_cdef_search (struct AV1_COMP *cpi)
	AV1 CDEF parameter search.

void	av1_pick_cdef_from_qp (AV1_COMMON *const cm, int skip_cdef, int is_screen_content)
	AV1 CDEF level from QP.

Detailed Description

This module describes the CDEF parameter search algorithm in AV1. More details will be added.

Function Documentation

Function for applying CDEF to a frame.

This function applies CDEF to a frame.

Parameters

[in,out]	frame	Compressed frame buffer
[in,out]	cm	Pointer to top level common structure
[in]	xd	Pointer to common current coding block structure
[in]	cdef_init_fb_row_fn	Function Pointer

Remarks: Nothing is returned. Instead, the filtered frame is output in frame.

void av1_cdef_search ( struct AV1_COMP * cpi )

AV1 CDEF parameter search.

Searches for optimal CDEF parameters for frame

Parameters

[in,out] cpi Top level encoder structure

Remarks

Nothing is returned. Instead, optimal CDEF parameters are stored in the cdef_info structure of type CdefInfo inside cm:

cdef_bits: Bits of strength parameters
nb_cdef_strengths: Number of strength parameters
cdef_strengths: list of nb_cdef_strengths strength parameters for the luma plane.
uv_cdef_strengths: list of nb_cdef_strengths strength parameters for the chroma planes.
damping_factor: CDEF damping factor.

AV1 CDEF level from QP.

Calculates CDEF levels from frame QP. Only used for speed 7+ with RT mode.

Parameters

[in,out]	cm	Pointer to top level common structure
[in]	skip_cdef	Flag to skip CDEF filtering
[in]	is_screen_content	Flag indicating screen content