img_chroma.c File Reference

Chroma interpolation functions. More...

#include "contributors.h"
#include <limits.h>
#include "global.h"
#include "image.h"
#include "img_chroma.h"

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Functions
static void	generateChroma00 (ImageParameters *p_Img, int size_x_minus1, int size_y_minus1, imgpel **wImgDst, imgpel **imgUV)
static void	generateChroma01 (ImageParameters *p_Img, int size_x_minus1, int size_y_minus1, int weight00, int weight01, imgpel **wImgDst, imgpel **imgUV)
static void	generateChroma10 (ImageParameters *p_Img, int size_x_minus1, int size_y_minus1, int weight00, int weight10, imgpel **wImgDst, imgpel **imgUV)
static void	generateChromaXX (ImageParameters *p_Img, int size_x_minus1, int size_y_minus1, int weight00, int weight01, int weight10, int weight11, imgpel **wImgDst, imgpel **imgUV)
void	getSubImagesChroma (ImageParameters *p_Img, InputParameters *p_Inp, StorablePicture *s)

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Detailed Description

Chroma interpolation functions.

Author:

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

• Athanasios Leontaris <aleon@dolby.com>
• Alexis Michael Tourapis <alexis.tourapis@dolby.com>

Definition in file img_chroma.c.

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Function Documentation

static void generateChroma00	(	ImageParameters *	p_Img,
		int	size_x_minus1,
		int	size_y_minus1,
		imgpel **	wImgDst,
		imgpel **	imgUV
	)			[static]

Integer sample position image generation routine.

Definition at line 32 of file img_chroma.c.

Referenced by getSubImagesChroma().

static void generateChroma01	(	ImageParameters *	p_Img,
		int	size_x_minus1,
		int	size_y_minus1,
		int	weight00,
		int	weight01,
		imgpel **	wImgDst,
		imgpel **	imgUV
	)			[static]

Horizontal chroma interpolation image generation routine.

Definition at line 116 of file img_chroma.c.

Referenced by getSubImagesChroma().

static void generateChroma10	(	ImageParameters *	p_Img,
		int	size_x_minus1,
		int	size_y_minus1,
		int	weight00,
		int	weight10,
		imgpel **	wImgDst,
		imgpel **	imgUV
	)			[static]

Vertical chroma interpolation image generation routine.

Definition at line 204 of file img_chroma.c.

Referenced by getSubImagesChroma().

static void generateChromaXX	(	ImageParameters *	p_Img,
		int	size_x_minus1,
		int	size_y_minus1,
		int	weight00,
		int	weight01,
		int	weight10,
		int	weight11,
		imgpel **	wImgDst,
		imgpel **	imgUV
	)			[static]

Generic/Diagonal chroma interpolation image generation routine.

Definition at line 289 of file img_chroma.c.

Referenced by getSubImagesChroma().

void getSubImagesChroma	(	ImageParameters *	p_Img,
		InputParameters *	p_Inp,
		StorablePicture *	s
	)

Creates the 16 (YUV444), 32 (YUV422), or 64 (YUV420) sub-images that contain quarter-pel samples sub-sampled at different spatial orientationss; enables more efficient implementation.

Definition at line 387 of file img_chroma.c.

References generateChroma00(), generateChroma01(), generateChroma10(), generateChromaXX(), storable_picture::imgUV, storable_picture::p_img_sub, YUV420, and YUV422.

Referenced by UnifiedOneForthPix().

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