wp_lms.c File Reference

Estimate weights for WP using LMS method. More...

#include "contributors.h"
#include "global.h"
#include "image.h"
#include "wp.h"

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Functions
static double	ComputeNormMean (imgpel **CurrentImage, double mean_value, int height, int width)
void	EstimateWPPSliceAlg1 (Slice *currSlice, int select_offset)
void	EstimateWPBSliceAlg1 (Slice *currSlice)
int	TestWPPSliceAlg1 (ImageParameters *p_Img, InputParameters *p_Inp, int select_offset)
int	TestWPBSliceAlg1 (ImageParameters *p_Img, InputParameters *p_Inp, int select_method)

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Detailed Description

Estimate weights for WP using LMS method.

Author:

Main contributors (see contributors.h for copyright, address and affiliation details)

• Alexis Michael Tourapis <alexismt@ieee.org>
• Athanasios Leontaris <aleon@dolby.com>

Definition in file wp_lms.c.

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Function Documentation

void EstimateWPBSliceAlg1

(

Slice *

currSlice

)

Estimates reference picture weighting factors for B slices.

implicit mode. Values are fixed and it is important to show it here

explicit mode. Values can be changed for higher precision.

implicit mode

Definition at line 191 of file wp_lms.c.

References inp_par_enc::ChromaWeightSupport, ComputeImgSum(), img_par::height, img_par::height_cr, storable_picture::imgUV, img_par::mb_data, storable_picture::p_curr_img, img_par::pCurImg, img_par::size, slice::wbp_weight, img_par::width, img_par::width_cr, slice::wp_offset, slice::wp_weight, and wpxDetermineWP().

Referenced by InitWP().

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void EstimateWPPSliceAlg1	(	Slice *	currSlice,
		int	select_offset
	)

Estimates reference picture weighting factors for P slices.

Definition at line 43 of file wp_lms.c.

References inp_par_enc::ChromaWeightSupport, ComputeImgSum(), img_par::height, img_par::height_cr, storable_picture::imgUV, img_par::mb_data, storable_picture::p_curr_img, img_par::pCurImg, img_par::size, img_par::size_cr, img_par::width, img_par::width_cr, slice::wp_offset, slice::wp_weight, and wpxDetermineWP().

Referenced by InitWP().

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int TestWPBSliceAlg1	(	ImageParameters *	p_Img,
		InputParameters *	p_Inp,
		int	select_method
	)

TestWPBSliceAlg1: Tests B slice weighting prediction.

implicit mode

explicit mode

explicit mode

Definition at line 613 of file wp_lms.c.

References inp_par_enc::B_List0_refs, inp_par_enc::B_List1_refs, inp_par_enc::ChromaWeightSupport, ComputeImgSum(), img_par::currentSlice, img_par::height, img_par::height_cr, storable_picture::imgUV, img_par::mb_data, img_par::MbaffFrameFlag, storable_picture::p_curr_img, img_par::pCurImg, img_par::size, slice::wbp_weight, img_par::width, and img_par::width_cr.

Referenced by InitWP().

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int TestWPPSliceAlg1	(	ImageParameters *	p_Img,
		InputParameters *	p_Inp,
		int	select_offset
	)

Tests P slice weighting factors to perform or not WP RD decision.

Definition at line 447 of file wp_lms.c.

References BASELINE, inp_par_enc::ChromaWeightSupport, ComputeImgSum(), img_par::height, img_par::height_cr, storable_picture::imgUV, img_par::mb_data, img_par::MbaffFrameFlag, storable_picture::p_curr_img, img_par::pCurImg, inp_par_enc::RDPSliceBTest, img_par::size, img_par::size_cr, img_par::width, and img_par::width_cr.

Referenced by InitWP().

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