weighted_prediction.c File Reference

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

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

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Functions
void	InitWP (ImageParameters *img, InputParameters *params)
double	ComputeImgSum (imgpel **CurrentImage, int height, int width)
void	EstimateWPPSliceAlg0 (ImageParameters *img, InputParameters *params, int select_offset)
void	EstimateWPBSliceAlg0 (ImageParameters *img, InputParameters *params)
int	TestWPPSliceAlg0 (ImageParameters *img, InputParameters *params, int select_offset)
int	TestWPBSliceAlg0 (ImageParameters *img, InputParameters *params, int select_method)

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Detailed Description

Estimate weights for WP using DC 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 weighted_prediction.c.

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Function Documentation

double ComputeImgSum	(	imgpel **	CurrentImage,
		int	height,
		int	width
	)

Compute sum of samples in a picture.

Definition at line 63 of file weighted_prediction.c.

Referenced by EstimateWPBSliceAlg0(), EstimateWPBSliceAlg1(), EstimateWPBSliceAlg2(), EstimateWPPSliceAlg0(), EstimateWPPSliceAlg1(), EstimateWPPSliceAlg2(), TestWPBSliceAlg0(), TestWPBSliceAlg1(), TestWPBSliceAlg2(), TestWPPSliceAlg0(), TestWPPSliceAlg1(), and TestWPPSliceAlg2().

void EstimateWPBSliceAlg0	(	ImageParameters *	img,
		InputParameters *	params
	)

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 215 of file weighted_prediction.c.

References InputParameters::ChromaWeightSupport, ComputeImgSum(), ImageParameters::current_mb_nr, ImageParameters::height, ImageParameters::height_cr, storable_picture::imgUV, ImageParameters::mb_data, macroblock::mb_field, ImageParameters::MbaffFrameFlag, storable_picture::p_curr_img, pCurImg, storable_picture::poc, ImageParameters::width, ImageParameters::width_cr, and wpxDetermineWP().

Referenced by InitWP().

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void EstimateWPPSliceAlg0	(	ImageParameters *	img,
		InputParameters *	params,
		int	select_offset
	)

Estimates reference picture weighting factors for P slices.

Definition at line 85 of file weighted_prediction.c.

References ImageParameters::bitdepth_chroma, ImageParameters::bitdepth_luma, InputParameters::ChromaWeightSupport, ComputeImgSum(), ImageParameters::current_mb_nr, ImageParameters::height, ImageParameters::height_cr, storable_picture::imgUV, ImageParameters::mb_data, macroblock::mb_field, ImageParameters::MbaffFrameFlag, storable_picture::p_curr_img, pCurImg, ImageParameters::size, ImageParameters::size_cr, ImageParameters::width, ImageParameters::width_cr, and wpxDetermineWP().

Referenced by InitWP().

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void InitWP	(	ImageParameters *	img,
		InputParameters *	params
	)

Initialize weighting parameter functions.

Definition at line 27 of file weighted_prediction.c.

References EstimateWPBSliceAlg0(), EstimateWPBSliceAlg1(), EstimateWPBSliceAlg2(), EstimateWPPSliceAlg0(), EstimateWPPSliceAlg1(), EstimateWPPSliceAlg2(), ImageParameters::nal_reference_idc, TestWPBSliceAlg0(), TestWPBSliceAlg1(), TestWPBSliceAlg2(), TestWPPSliceAlg0(), TestWPPSliceAlg1(), TestWPPSliceAlg2(), InputParameters::WPIterMC, and InputParameters::WPMethod.

Referenced by init_slice().

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int TestWPBSliceAlg0	(	ImageParameters *	img,
		InputParameters *	params,
		int	select_method
	)

TestWPBSliceAlg0: Tests B slice weighting prediction.

implicit mode

implicit mode

explicit mode

implicit mode

Definition at line 587 of file weighted_prediction.c.

References InputParameters::B_List0_refs, InputParameters::B_List1_refs, InputParameters::ChromaWeightSupport, ComputeImgSum(), ImageParameters::current_mb_nr, ImageParameters::height, ImageParameters::height_cr, storable_picture::imgUV, ImageParameters::mb_data, macroblock::mb_field, ImageParameters::MbaffFrameFlag, storable_picture::p_curr_img, pCurImg, storable_picture::poc, ImageParameters::width, and ImageParameters::width_cr.

Referenced by InitWP().

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int TestWPPSliceAlg0	(	ImageParameters *	img,
		InputParameters *	params,
		int	select_offset
	)

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

Definition at line 438 of file weighted_prediction.c.

References ImageParameters::bitdepth_chroma, ImageParameters::bitdepth_luma, InputParameters::ChromaWeightSupport, ComputeImgSum(), ImageParameters::current_mb_nr, ImageParameters::height, ImageParameters::height_cr, storable_picture::imgUV, ImageParameters::mb_data, macroblock::mb_field, ImageParameters::MbaffFrameFlag, storable_picture::p_curr_img, pCurImg, InputParameters::RDPSliceBTest, ImageParameters::size, ImageParameters::size_cr, ImageParameters::width, and ImageParameters::width_cr.

Referenced by InitWP().

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