errdo.c File Reference

Contains functions that implement the "decoders in the encoder" concept for the rate-distortion optimization with losses. More...

#include "global.h"
#include "memalloc.h"
#include "refbuf.h"
#include "image.h"
#include "errdo.h"
#include "errdo_mc_prediction.h"

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Functions

static StorablePicture * find_nearest_ref_picture (int poc)

static void copy_conceal_mb (StorablePicture *enc_pic, ImageParameters *image, int decoder, int mb_error, Macroblock *currMB, StorablePicture *refPic)

static void get_predicted_mb (StorablePicture *enc_pic, ImageParameters *image, int decoder, Macroblock *currMB)

static void add_residue (StorablePicture *enc_pic, ImageParameters *image, int decoder, int pl, int block8x8, int x_size, int y_size)

static void Build_Status_Map (byte **s_map)

void DeblockFrame (ImageParameters *img, imgpel **, imgpel ***)

int allocate_errdo_mem (InputParameters *pparams)

void free_errdo_mem (void)

void decode_one_mb (ImageParameters *image, StorablePicture *enc_pic, int decoder, Macroblock *currMB)

void decode_one_b8block (ImageParameters *image, StorablePicture *enc_pic, Macroblock *currMB, int decoder, int block8x8, short mv_mode, int pred_dir)

void UpdateDecoders (InputParameters *params, ImageParameters *image, StorablePicture *enc_pic)

void init_error_conceal (int concealment_type)

static void get_predicted_concealment_mb (StorablePicture *enc_pic, ImageParameters *image, int decoder, Macroblock *currMB)

void copy_conceal_picture (ImageParameters *image, StorablePicture *enc_pic, int decoder)

void compute_residue_block (ImageParameters *image, imgpel **imgY, int **res_img, imgpel **mb_pred, int b8block, int block_size)

void errdo_store_best_block (imgpel ***mbY, imgpel ***dec_img, int block_i, int block_j, int img_i, int img_j, int block_size)

void errdo_get_best_block (ImageParameters *image, imgpel ***dec_img, imgpel ***mbY, int j0, int block_size)

Variables

Decoders * decs = NULL

Detailed Description

Contains functions that implement the "decoders in the encoder" concept for the rate-distortion optimization with losses.

Date:: October 22nd, 2001

Author:

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

Dimitrios Kontopodis <dkonto@eikon.tum.de> Code revamped July 2008 by:
Peshala Pahalawatta (ppaha@dolby.com)
Alexis Tourapis (atour@dolby.com)

Definition in file errdo.c.

Function Documentation

static void add_residue	(	StorablePicture *	enc_pic,
		ImageParameters *	image,
		int	decoder,
		int	pl,
		int	block8x8,
		int	x_size,
		int	y_size
	)			`[static]`

Add residual to motion predicted block.

Definition at line 298 of file errdo.c.

References Decoders::dec_mb_pred, ImageParameters::max_imgpel_value_comp, storable_picture::p_dec_img, ImageParameters::pix_x, ImageParameters::pix_y, and Decoders::res_img.

Referenced by decode_one_b8block(), and decode_one_mb().

int allocate_errdo_mem ( InputParameters * pparams )

Allocate memory for error resilient RDO.

Definition at line 45 of file errdo.c.

References Decoders::dec_mb_pred, Decoders::dec_mb_pred_best8x8, Decoders::dec_mbY_best, Decoders::dec_mbY_best8x8, get_mem3Dint(), get_mem3Dpel(), get_mem4Dpel(), InputParameters::NoOfDecoders, and Decoders::res_img.

Referenced by init_global_buffers().

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static void Build_Status_Map ( byte ** s_map ) [static]

Builds a random status map showing whether each MB is received or lost, based on the packet loss rate and the slice structure.

Parameters:

s_map

The status map to be filled

Packet OK

Definition at line 617 of file errdo.c.

References ImageParameters::height, InputParameters::LossRateA, InputParameters::LossRateB, InputParameters::LossRateC, ImageParameters::mb_data, InputParameters::partition_mode, InputParameters::slice_mode, macroblock::slice_nr, and ImageParameters::width.

Referenced by UpdateDecoders().

void compute_residue_block	(	ImageParameters *	image,
		imgpel **	imgY,
		int **	res_img,
		imgpel **	mb_pred,
		int	b8block,
		int	block_size
	)

Gives the prediction residue for a block.

Definition at line 551 of file errdo.c.

References ImageParameters::pix_x.

Referenced by RDCost_for_8x8blocks(), and RDCost_for_macroblocks().

void copy_conceal_picture	(	ImageParameters *	image,
		StorablePicture *	enc_pic,
		int	decoder
	)

Performs copy error concealment for macroblocks with errors. Note: Currently assumes that the reference picture lists remain the same for all slices of a picture.

Definition at line 447 of file errdo.c.

References ImageParameters::block_x, ImageParameters::block_y, ImageParameters::mb_data, storable_picture::mb_error_map, ImageParameters::mb_x, ImageParameters::mb_y, ImageParameters::PicSizeInMbs, ImageParameters::pix_x, ImageParameters::pix_y, and storable_picture::poc.

Referenced by init_error_conceal().

void DeblockFrame	(	ImageParameters *	img,
		imgpel **	,
		imgpel ***
	)

Filter all macroblocks in order of increasing macroblock address.

Definition at line 90 of file loopFilter.c.

Referenced by code_a_plane(), and UpdateDecoders().

void decode_one_b8block	(	ImageParameters *	image,
		StorablePicture *	enc_pic,
		Macroblock *	currMB,
		int	decoder,
		int	block8x8,
		short	mv_mode,
		int	pred_dir
	)

Decodes one 8x8 partition for error resilient RDO. Currently does not support: 1) B coded pictures 2) Chroma components 3) Potential error propagation due to intra prediction 4) Field coding.

Definition at line 239 of file errdo.c.

References add_residue(), macroblock::bipred_me, direct_ref_idx, storable_picture::motion, storable_picture::p_curr_img, storable_picture::p_dec_img, ImageParameters::pix_y, and pic_motion_params::ref_idx.

Referenced by RDCost_for_8x8blocks().

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void decode_one_mb	(	ImageParameters *	image,
		StorablePicture *	enc_pic,
		int	decoder,
		Macroblock *	currMB
	)

Decodes one macroblock for error resilient RDO. Currently does not support: 1) B coded pictures 2) Chroma components 3) Potential error propagation due to intra prediction 4) Field coding.

Definition at line 109 of file errdo.c.

References add_residue(), Decoders::dec_mb_pred, get_predicted_mb(), ImageParameters::mb_size, macroblock::mb_type, storable_picture::p_curr_img, storable_picture::p_dec_img, ImageParameters::pix_x, ImageParameters::pix_y, and ImageParameters::type.

Referenced by RDCost_for_macroblocks().

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void errdo_get_best_block	(	ImageParameters *	image,
		imgpel ***	dec_img,
		imgpel ***	mbY,
		int	j0,
		int	block_size
	)

Restores the pel values from the current best mode.

Definition at line 593 of file errdo.c.

References InputParameters::NoOfDecoders, ImageParameters::pix_x, and ImageParameters::pix_y.

Referenced by set_stored_macroblock_parameters(), SetCoeffAndReconstruction8x8(), and submacroblock_mode_decision().

void errdo_store_best_block	(	imgpel ***	mbY,
		imgpel ***	dec_img,
		int	block_i,
		int	block_j,
		int	img_i,
		int	img_j,
		int	block_size
	)

Stores the pel values for the current best mode.

Definition at line 572 of file errdo.c.

References InputParameters::NoOfDecoders.

Referenced by store_macroblock_parameters(), and submacroblock_mode_decision().

void free_errdo_mem ( void )

free memory of error resilient RDO.

Definition at line 71 of file errdo.c.

References Decoders::dec_mb_pred, Decoders::dec_mb_pred_best8x8, Decoders::dec_mbY_best, Decoders::dec_mbY_best8x8, free_mem3Dint(), free_mem3Dpel(), free_mem4Dpel(), and Decoders::res_img.

Referenced by free_global_buffers().

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static void get_predicted_concealment_mb	(	StorablePicture *	enc_pic,
		ImageParameters *	image,
		int	decoder,
		Macroblock *	currMB
	)			`[static]`

Finds predicted macroblock values for error concealment.

Requires enc_pic->motion.mv and enc_pic->motion.ref_idx to be correct for current picture.

Definition at line 359 of file errdo.c.

References macroblock::b8mode, macroblock::b8pdir, macroblock::mb_type, storable_picture::motion, pic_motion_params::ref_idx, and ImageParameters::type.

static void get_predicted_mb	(	StorablePicture *	enc_pic,
		ImageParameters *	image,
		int	decoder,
		Macroblock *	currMB
	)			`[static]`

Finds predicted macroblock values and copies them to img->mb_pred[0][][].

Definition at line 148 of file errdo.c.

References macroblock::b8mode, macroblock::b8pdir, macroblock::bipred_me, macroblock::mb_type, storable_picture::motion, pic_motion_params::ref_idx, and ImageParameters::type.

Referenced by decode_one_mb().

void init_error_conceal ( int concealment_type )

Initialize error concealment function (Currently only copy concealment is implemented. Can extend to other concealment types when available.).

Definition at line 345 of file errdo.c.

References copy_conceal_picture().

Referenced by init_encoder().

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void UpdateDecoders	(	InputParameters *	params,
		ImageParameters *	image,
		StorablePicture *	enc_pic
	)

Performs the simulation of the packet losses, calls the error concealment funcs and deblocks the error concealed pictures.

Definition at line 325 of file errdo.c.

References Build_Status_Map(), DeblockFrame(), storable_picture::mb_error_map, InputParameters::NoOfDecoders, and storable_picture::p_dec_img.

Referenced by encode_one_frame().

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Functions
static StorablePicture *	find_nearest_ref_picture (int poc)
static void	copy_conceal_mb (StorablePicture enc_pic, ImageParameters image, int decoder, int mb_error, Macroblock currMB, StorablePicture refPic)
static void	get_predicted_mb (StorablePicture enc_pic, ImageParameters image, int decoder, Macroblock *currMB)
static void	add_residue (StorablePicture enc_pic, ImageParameters image, int decoder, int pl, int block8x8, int x_size, int y_size)
static void	Build_Status_Map (byte **s_map)
void	DeblockFrame (ImageParameters img, imgpel , imgpel **)
int	allocate_errdo_mem (InputParameters *pparams)
void	free_errdo_mem (void)
void	decode_one_mb (ImageParameters image, StorablePicture enc_pic, int decoder, Macroblock *currMB)
void	decode_one_b8block (ImageParameters image, StorablePicture enc_pic, Macroblock *currMB, int decoder, int block8x8, short mv_mode, int pred_dir)
void	UpdateDecoders (InputParameters params, ImageParameters image, StorablePicture *enc_pic)
void	init_error_conceal (int concealment_type)
static void	get_predicted_concealment_mb (StorablePicture enc_pic, ImageParameters image, int decoder, Macroblock *currMB)
void	copy_conceal_picture (ImageParameters image, StorablePicture enc_pic, int decoder)
void	compute_residue_block (ImageParameters image, imgpel imgY, int res_img, imgpel *mb_pred, int b8block, int block_size)
void	errdo_store_best_block (imgpel *mbY, imgpel *dec_img, int block_i, int block_j, int img_i, int img_j, int block_size)
void	errdo_get_best_block (ImageParameters image, imgpel dec_img, imgpel *mbY, int j0, int block_size)
Variables
Decoders *	decs = NULL