block.c File Reference

Block functions. More...

#include "contributors.h"
#include "global.h"
#include "block.h"
#include "image.h"
#include "mb_access.h"
#include "transform.h"
#include "quant.h"
#include "memalloc.h"

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Functions
void	itrans4x4 (Macroblock *currMB, ColorPlane pl, int ioff, int joff)
void	itrans4x4_ls (Macroblock *currMB, ColorPlane pl, int ioff, int joff)
void	Inv_Residual_trans_4x4 (Macroblock *currMB, ColorPlane pl, int ioff, int joff)
void	Inv_Residual_trans_8x8 (Macroblock *currMB, ColorPlane pl, int ioff, int joff)
void	itrans_2 (Macroblock *currMB, ColorPlane pl)
void	itrans_sp (Macroblock *currMB, ColorPlane pl, int ioff, int joff)
void	itrans_sp_cr (Macroblock *currMB, int uv)
void	iMBtrans4x4 (Macroblock *currMB, ColorPlane pl, int smb)
void	iMBtrans8x8 (Macroblock *currMB, ColorPlane pl)
void	iTransform (Macroblock *currMB, ColorPlane pl, int need_4x4_transform, int smb)
void	copy_image_data_16x16 (imgpel **imgBuf1, imgpel **imgBuf2, int off1, int off2)
void	copy_image_data_8x8 (imgpel **imgBuf1, imgpel **imgBuf2, int off1, int off2)
void	copy_image_data_4x4 (imgpel **imgBuf1, imgpel **imgBuf2, int off1, int off2)
void	copy_image_data (imgpel **imgBuf1, imgpel **imgBuf2, int off1, int off2, int width, int height)

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Detailed Description

Block functions.

block.c

Author:

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

• Inge Lille-Langoy <inge.lille-langoy@telenor.com>
• Rickard Sjoberg <rickard.sjoberg@era.ericsson.se>

Definition in file block.c.

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Function Documentation

void copy_image_data	(	imgpel **	imgBuf1,
		imgpel **	imgBuf2,
		int	off1,
		int	off2,
		int	width,
		int	height
	)

Copy ImgPel Data from one structure to another (8x8).

Definition at line 694 of file block.c.

Referenced by decode_one_component_p_slice().

void copy_image_data_16x16	(	imgpel **	imgBuf1,
		imgpel **	imgBuf2,
		int	off1,
		int	off2
	)

Copy ImgPel Data from one structure to another (16x16).

Definition at line 648 of file block.c.

Referenced by decode_one_component_p_slice().

void copy_image_data_4x4	(	imgpel **	imgBuf1,
		imgpel **	imgBuf2,
		int	off1,
		int	off2
	)

Copy ImgPel Data from one structure to another (4x4).

Definition at line 679 of file block.c.

Referenced by decode_one_component_b_slice(), decode_one_component_i_slice(), and decode_one_component_p_slice().

void copy_image_data_8x8	(	imgpel **	imgBuf1,
		imgpel **	imgBuf2,
		int	off1,
		int	off2
	)

Copy ImgPel Data from one structure to another (8x8).

Definition at line 663 of file block.c.

Referenced by decode_one_component_b_slice(), decode_one_component_i_slice(), and decode_one_component_p_slice().

void Inv_Residual_trans_4x4	(	Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)

Inverse residual DPCM for Intra lossless coding.

Parameters:

	currMB	current macroblock
	pl	used color plane
	ioff	index to 4x4 block
	joff	index to 4x4 block

Definition at line 99 of file block.c.

References macroblock::p_Img, and macroblock::p_Slice.

Referenced by decode_one_component_b_slice(), decode_one_component_i_slice(), and decode_one_component_p_slice().

void Inv_Residual_trans_8x8	(	Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)

Inverse residual DPCM for Intra lossless coding.

Input:

ioff_x,joff_y: Block position inside a macro block (0,8).

Definition at line 175 of file block.c.

References macroblock::p_Img, and macroblock::p_Slice.

Referenced by decode_one_component_b_slice(), decode_one_component_i_slice(), and decode_one_component_p_slice().

void itrans4x4	(	Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)

Inverse 4x4 transformation, transforms cof to mb_rres.

Parameters:

	currMB	current macroblock
	pl	used color plane
	ioff	index to 4x4 block
	joff	index to 4x4 block

Definition at line 33 of file block.c.

References macroblock::p_Img, and macroblock::p_Slice.

Referenced by decode_one_component_b_slice(), decode_one_component_i_slice(), and decode_one_component_p_slice().

void itrans4x4_ls	(	Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)

Inverse 4x4 lossless_qpprime transformation, transforms cof to mb_rres.

Parameters:

	currMB	current macroblock
	pl	Color plane (for 4:4:4)
	ioff	index to 4x4 block
	joff	index to 4x4 block

Definition at line 65 of file block.c.

References macroblock::p_Img, and macroblock::p_Slice.

void itrans_2	(	Macroblock *	currMB,
		ColorPlane	pl
	)

Luma DC inverse transform.

Parameters:

	currMB	current macroblock
	pl	used color plane

Definition at line 251 of file block.c.

References free_mem2Dint(), get_mem2Dint(), macroblock::p_Img, macroblock::p_Slice, and macroblock::qp_scaled.

Referenced by read_CBP_and_coeffs_from_NAL_CABAC(), and read_CBP_and_coeffs_from_NAL_CAVLC().

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void itrans_sp	(	Macroblock *	currMB,
		ColorPlane	pl,
		int	ioff,
		int	joff
	)

Parameters:

	currMB	current macroblock
	pl	used color plane
	ioff	index to 4x4 block
	joff	index to 4x4 block

Definition at line 293 of file block.c.

References dequant_coef, free_mem2Dint(), get_mem2Dint(), macroblock::p_Img, macroblock::p_Slice, and slice::slice_type.

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