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"
#include "md_common.h"

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Functions

static StorablePicture * find_nearest_ref_picture (DecodedPictureBuffer *p_Dpb, int poc)
static void copy_conceal_mb (Macroblock *currMB, StorablePicture *enc_pic, int decoder, int mb_error, StorablePicture *refPic)
static void get_predicted_mb (Macroblock *currMB, StorablePicture *enc_pic, int decoder)
static void add_residue (Macroblock *currMB, StorablePicture *enc_pic, int decoder, int pl, int block8x8, int x_size, int y_size)
static void Build_Status_Map (ImageParameters *p_Img, InputParameters *p_Inp, byte **s_map)
void DeblockFrame (ImageParameters *p_Img, imgpel **, imgpel ***)
int allocate_errdo_mem (ImageParameters *p_Img, InputParameters *p_Inp)
void free_errdo_mem (ImageParameters *p_Img)
void decode_one_mb (Macroblock *currMB, StorablePicture *enc_pic, int decoder)
void decode_one_b8block (Macroblock *currMB, StorablePicture *enc_pic, int decoder, int block8x8, short mv_mode, int pred_dir)
void UpdateDecoders (ImageParameters *p_Img, InputParameters *p_Inp, StorablePicture *enc_pic)
void init_error_conceal (ImageParameters *p_Img, int concealment_type)
static void get_predicted_concealment_mb (Macroblock *currMB, StorablePicture *enc_pic, int decoder)
void copy_conceal_picture (ImageParameters *p_Img, StorablePicture *enc_pic, int decoder)
void compute_residue_block (Macroblock *currMB, imgpel **imgY, int **res_img, imgpel **mb_pred, int b8block, int block_size)
void errdo_store_best_block (InputParameters *p_Inp, 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 (Macroblock *currMB, imgpel ***dec_img, imgpel ***mbY, int j0, int block_size)

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)

Definition in file errdo.c.

Function Documentation

static void add_residue ( Macroblock *  currMB,
StorablePicture *  enc_pic,
int  decoder,
int  pl,
int  block8x8,
int  x_size,
int  y_size 
) [static]

Add residual to motion predicted block.

Definition at line 299 of file errdo.c.

References decoders::dec_mb_pred, img_par::max_pel_value_comp, storable_picture::p_dec_img, macroblock::p_Img, macroblock::pix_x, macroblock::pix_y, and decoders::res_img.

Referenced by decode_one_b8block(), and decode_one_mb().

int allocate_errdo_mem ( ImageParameters *  p_Img,
InputParameters *  p_Inp 
)

Allocate memory for error resilient RDO.

Definition at line 44 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(), and decoders::res_img.

Referenced by init_global_buffers().

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static void Build_Status_Map ( ImageParameters *  p_Img,
InputParameters *  p_Inp,
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:
p_Img ImageParameters structure for encoding
p_Inp InputParameters for configurations
s_map The status map to be filled

Packet OK

Definition at line 628 of file errdo.c.

References img_par::height, inp_par_enc::LossRateA, inp_par_enc::LossRateB, inp_par_enc::LossRateC, img_par::mb_data, inp_par_enc::partition_mode, inp_par_enc::slice_mode, macroblock::slice_nr, and img_par::width.

Referenced by UpdateDecoders().

void compute_residue_block ( Macroblock *  currMB,
imgpel **  imgY,
int **  res_img,
imgpel **  mb_pred,
int  b8block,
int  block_size 
)

Gives the prediction residue for a block.

Definition at line 558 of file errdo.c.

References macroblock::pix_x.

Referenced by RDCost_for_8x8blocks(), and RDCost_for_macroblocks().

void copy_conceal_picture ( ImageParameters *  p_Img,
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 452 of file errdo.c.

References macroblock::block_x, macroblock::block_y, img_par::mb_data, storable_picture::mb_error_map, macroblock::mb_x, macroblock::mb_y, macroblock::pix_x, and macroblock::pix_y.

Referenced by init_error_conceal().

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

Filter all macroblocks in order of increasing macroblock address.

Definition at line 81 of file loopFilter.c.

Referenced by code_a_plane(), and UpdateDecoders().

void decode_one_b8block ( Macroblock *  currMB,
StorablePicture *  enc_pic,
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(), slice::direct_ref_idx, storable_picture::motion, storable_picture::p_curr_img, storable_picture::p_dec_img, macroblock::p_slice, perform_mc(), macroblock::pix_y, and pic_motion_params::ref_idx.

Referenced by RDCost_for_8x8blocks().

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

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 108 of file errdo.c.

References add_residue(), copy_image_data_16x16(), decoders::dec_mb_pred, get_predicted_mb(), macroblock::mb_type, storable_picture::p_curr_img, storable_picture::p_dec_img, macroblock::p_Img, macroblock::p_slice, macroblock::pix_x, macroblock::pix_y, and slice::slice_type.

Referenced by RDCost_for_macroblocks().

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void errdo_get_best_block ( Macroblock *  currMB,
imgpel ***  dec_img,
imgpel ***  mbY,
int  j0,
int  block_size 
)

Restores the pel values from the current best mode.

Definition at line 600 of file errdo.c.

References macroblock::pix_x, and macroblock::pix_y.

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

void errdo_store_best_block ( InputParameters *  p_Inp,
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 579 of file errdo.c.

Referenced by store_macroblock_parameters(), and submacroblock_mode_decision().

void free_errdo_mem ( ImageParameters *  p_Img  ) 

free memory of error resilient RDO.

Definition at line 70 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 ( Macroblock *  currMB,
StorablePicture *  enc_pic,
int  decoder 
) [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 362 of file errdo.c.

References macroblock::mb_type, storable_picture::motion, macroblock::p_slice, perform_mc_concealment(), pic_motion_params::ref_idx, and slice::slice_type.

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

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

Definition at line 147 of file errdo.c.

References macroblock::mb_type, storable_picture::motion, macroblock::p_slice, perform_mc(), pic_motion_params::ref_idx, and slice::slice_type.

Referenced by decode_one_mb().

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void init_error_conceal ( ImageParameters *  p_Img,
int  concealment_type 
)

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

Definition at line 348 of file errdo.c.

References copy_conceal_picture(), and img_par::error_conceal_picture.

Referenced by init_encoder().

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void UpdateDecoders ( ImageParameters *  p_Img,
InputParameters *  p_Inp,
StorablePicture *  enc_pic 
)

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

Definition at line 328 of file errdo.c.

References Build_Status_Map(), DeblockFrame(), img_par::error_conceal_picture, storable_picture::mb_error_map, and storable_picture::p_dec_img.

Referenced by encode_one_frame().

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