mv-search.c

H.264标准代码(用于视频编码)

/*!
 *************************************************************************************
 * \file mv-search.c
 *
 * \brief
 *    Motion Vector Search, unified for B and P Pictures
 *
 * \author
 *    Main contributors (see contributors.h for copyright, address and affiliation details)
 *      - Stephan Wenger                  <[e-mail]>
 *      - Inge Lille-Lang鴜               <[e-mail]>
 *      - Rickard Sjoberg                 <[e-mail]>
 *      - Stephan Wenger                  <[e-mail]>
 *      - Jani Lainema                    <[e-mail]>
 *      - Detlev Marpe                    <[e-mail]>
 *      - Thomas Wedi                     <[e-mail]>
 *      - Heiko Schwarz                   <[e-mail]>
 *
 *************************************************************************************
*/

#include "contributors.h"

#include <math.h>
#include <stdlib.h>
#include <assert.h>
#include <limits.h>

#include "global.h"
#include "image.h"
#include "mv-search.h"
#include "refbuf.h"
#include "memalloc.h"
#include "mb_access.h"


// These procedure pointers are used by motion_search() and one_eigthpel()
static pel_t (*PelY_14) (pel_t**, int, int);
static pel_t *(*PelYline_11) (pel_t *, int, int);

// Statistics, temporary
int     max_mvd;
int*    spiral_search_x;
int*    spiral_search_y;
int*    mvbits;
int*    refbits;
int*    byte_abs;
int**** motion_cost;


void SetMotionVectorPredictor (int  pmv[2],
                               int  ***refPic,
                               int  ****tmp_mv,
                               int  ref_frame,
                               int  list,
                               int  block_x,
                               int  block_y,
                               int  blockshape_x,
                               int  blockshape_y);

#ifdef _FAST_FULL_ME_

/*****
 *****  static variables for fast integer motion estimation
 *****
 */
static int  **search_setup_done;  //!< flag if all block SAD's have been calculated yet
static int  **search_center_x;    //!< absolute search center for fast full motion search
static int  **search_center_y;    //!< absolute search center for fast full motion search
static int  **pos_00;             //!< position of (0,0) vector
static int  *****BlockSAD;        //!< SAD for all blocksize, ref. frames and motion vectors
static int  **max_search_range;


/*!
 ***********************************************************************
 * \brief
 *    function creating arrays for fast integer motion estimation
 ***********************************************************************
 */
void
InitializeFastFullIntegerSearch ()
{
  int  i, j, k, list;
  int  search_range = input->search_range;
  int  max_pos      = (2*search_range+1) * (2*search_range+1);

  if(input->InterlaceCodingOption != FRAME_CODING) 
    img->buf_cycle *= 2;

  if ((BlockSAD = (int*****)malloc (2 * sizeof(int****))) == NULL)
    no_mem_exit ("InitializeFastFullIntegerSearch: BlockSAD");
  for (list=0; list<2;list++)
  {
    if ((BlockSAD[list] = (int****)malloc ((img->buf_cycle+1) * sizeof(int***))) == NULL)
      no_mem_exit ("InitializeFastFullIntegerSearch: BlockSAD");
    for (i = 0; i <= img->buf_cycle; i++)
    {
      if ((BlockSAD[list][i] = (int***)malloc (8 * sizeof(int**))) == NULL)
        no_mem_exit ("InitializeFastFullIntegerSearch: BlockSAD");
      for (j = 1; j < 8; j++)
      {
        if ((BlockSAD[list][i][j] = (int**)malloc (16 * sizeof(int*))) == NULL)
          no_mem_exit ("InitializeFastFullIntegerSearch: BlockSAD");
        for (k = 0; k < 16; k++)
        {
          if ((BlockSAD[list][i][j][k] = (int*)malloc (max_pos * sizeof(int))) == NULL)
            no_mem_exit ("InitializeFastFullIntegerSearch: BlockSAD");
        }
      }
    }
  }

  if ((search_setup_done = (int**)malloc (2*sizeof(int)))==NULL)
    no_mem_exit ("InitializeFastFullIntegerSearch: search_setup_done");
  if ((search_center_x = (int**)malloc (2*sizeof(int)))==NULL)
    no_mem_exit ("InitializeFastFullIntegerSearch: search_center_x");
  if ((search_center_y = (int**)malloc (2*sizeof(int)))==NULL)
    no_mem_exit ("InitializeFastFullIntegerSearch: search_center_y");
  if ((pos_00 = (int**)malloc (2*sizeof(int)))==NULL)
    no_mem_exit ("InitializeFastFullIntegerSearch: pos_00");
  if ((max_search_range = (int**)malloc (2*sizeof(int)))==NULL)
    no_mem_exit ("InitializeFastFullIntegerSearch: max_search_range");

  for (list=0; list<2; list++)
  {
  if ((search_setup_done[list] = (int*)malloc ((img->buf_cycle+1)*sizeof(int)))==NULL)
    no_mem_exit ("InitializeFastFullIntegerSearch: search_setup_done");
  if ((search_center_x[list] = (int*)malloc ((img->buf_cycle+1)*sizeof(int)))==NULL)
    no_mem_exit ("InitializeFastFullIntegerSearch: search_center_x");
  if ((search_center_y[list] = (int*)malloc ((img->buf_cycle+1)*sizeof(int)))==NULL)
    no_mem_exit ("InitializeFastFullIntegerSearch: search_center_y");
  if ((pos_00[list] = (int*)malloc ((img->buf_cycle+1)*sizeof(int)))==NULL)
    no_mem_exit ("InitializeFastFullIntegerSearch: pos_00");
  if ((max_search_range[list] = (int*)malloc ((img->buf_cycle+1)*sizeof(int)))==NULL)
    no_mem_exit ("InitializeFastFullIntegerSearch: max_search_range");
  }

  // assign max search ranges for reference frames
  if (input->full_search == 2)
  {
    for (list=0;list<2;list++)
      for (i=0; i<=img->buf_cycle; i++)  max_search_range[list][i] = search_range;
  }
  else
  {
    for (list=0;list<2;list++)
    {
      max_search_range[list][0] = max_search_range[list][img->buf_cycle] = search_range;
      for (i=1; i< img->buf_cycle; i++)  max_search_range[list][i] = search_range / 2;
    }
  }

  if(input->InterlaceCodingOption != FRAME_CODING) 
    img->buf_cycle /= 2;
}



/*!
 ***********************************************************************
 * \brief
 *    function for deleting the arrays for fast integer motion estimation
 ***********************************************************************
 */
void
ClearFastFullIntegerSearch ()
{
  int  i, j, k, list;

  if(input->InterlaceCodingOption != FRAME_CODING) 
    img->buf_cycle *= 2;

  for (list=0; list<2; list++)
  {
    for (i = 0; i <= img->buf_cycle; i++)
    {
      for (j = 1; j < 8; j++)
      {
        for (k = 0; k < 16; k++)
        {
          free (BlockSAD[list][i][j][k]);
        }
        free (BlockSAD[list][i][j]);
      }
      free (BlockSAD[list][i]);
    }
    free (BlockSAD[list]);
  }
  free (BlockSAD);

  for (list=0; list<2; list++)
  {
    free (search_setup_done[list]);
    free (search_center_x[list]);
    free (search_center_y[list]);
    free (pos_00[list]);
    free (max_search_range[list]);
  }
  free (search_setup_done);
  free (search_center_x);
  free (search_center_y);
  free (pos_00);
  free (max_search_range);

  if(input->InterlaceCodingOption != FRAME_CODING) 
    img->buf_cycle /= 2;
}


/*!
 ***********************************************************************
 * \brief
 *    function resetting flags for fast integer motion estimation
 *    (have to be called in start_macroblock())
 ***********************************************************************
 */
void
ResetFastFullIntegerSearch ()
{
  int i,list;
  for (list=0; list<2; list++)
    for (i = 0; i <= img->buf_cycle; i++)
      search_setup_done [list][i] = 0;
}

/*!
 ***********************************************************************
 * \brief
 *    calculation of SAD for larger blocks on the basis of 4x4 blocks
 ***********************************************************************
 */
void
SetupLargerBlocks (int list, int refindex, int max_pos)
{
#define ADD_UP_BLOCKS()   _o=*_bo; _i=*_bi; _j=*_bj; for(pos=0;pos<max_pos;pos++) _o[pos] = _i[pos] + _j[pos];
#define INCREMENT(inc)    _bo+=inc; _bi+=inc; _bj+=inc;

  int    pos, **_bo, **_bi, **_bj;
  register int *_o,   *_i,   *_j;

  //--- blocktype 6 ---
  _bo = BlockSAD[list][refindex][6];
  _bi = BlockSAD[list][refindex][7];
  _bj = _bi + 4;
  ADD_UP_BLOCKS(); INCREMENT(1);
  ADD_UP_BLOCKS(); INCREMENT(1);
  ADD_UP_BLOCKS(); INCREMENT(1);
  ADD_UP_BLOCKS(); INCREMENT(5);
  ADD_UP_BLOCKS(); INCREMENT(1);
  ADD_UP_BLOCKS(); INCREMENT(1);
  ADD_UP_BLOCKS(); INCREMENT(1);
  ADD_UP_BLOCKS();

  //--- blocktype 5 ---
  _bo = BlockSAD[list][refindex][5];
  _bi = BlockSAD[list][refindex][7];
  _bj = _bi + 1;
  ADD_UP_BLOCKS(); INCREMENT(2);
  ADD_UP_BLOCKS(); INCREMENT(2);
  ADD_UP_BLOCKS(); INCREMENT(2);
  ADD_UP_BLOCKS(); INCREMENT(2);
  ADD_UP_BLOCKS(); INCREMENT(2);
  ADD_UP_BLOCKS(); INCREMENT(2);
  ADD_UP_BLOCKS(); INCREMENT(2);
  ADD_UP_BLOCKS();

  //--- blocktype 4 ---
  _bo = BlockSAD[list][refindex][4];
  _bi = BlockSAD[list][refindex][6];
  _bj = _bi + 1;
  ADD_UP_BLOCKS(); INCREMENT(2);
  ADD_UP_BLOCKS(); INCREMENT(6);
  ADD_UP_BLOCKS(); INCREMENT(2);
  ADD_UP_BLOCKS();

  //--- blocktype 3 ---
  _bo = BlockSAD[list][refindex][3];
  _bi = BlockSAD[list][refindex][4];
  _bj = _bi + 8;
  ADD_UP_BLOCKS(); INCREMENT(2);
  ADD_UP_BLOCKS();

  //--- blocktype 2 ---
  _bo = BlockSAD[list][refindex][2];
  _bi = BlockSAD[list][refindex][4];
  _bj = _bi + 2;
  ADD_UP_BLOCKS(); INCREMENT(8);
  ADD_UP_BLOCKS();

  //--- blocktype 1 ---
  _bo = BlockSAD[list][refindex][1];
  _bi = BlockSAD[list][refindex][3];
  _bj = _bi + 2;
  ADD_UP_BLOCKS();
}


/*!
 ***********************************************************************
 * \brief
 *    Setup the fast search for an macroblock
 ***********************************************************************
 */
void SetupFastFullPelSearch (int ref, int list)  // <--  reference frame parameter, list0 or 1
{
  int     pmv[2];
  pel_t   orig_blocks[256], *orgptr=orig_blocks, *refptr;
  int     offset_x, offset_y, x, y, range_partly_outside, ref_x, ref_y, pos, abs_x, abs_y, bindex, blky;
  int     LineSadBlk0, LineSadBlk1, LineSadBlk2, LineSadBlk3;

  int     refframe      = (ref>=0 ? ref             : 0);
  int     refindex      = (ref>=0 ? ref             : img->buf_cycle);
  pel_t*  ref_pic;    //   = img->type==B_SLICE? Refbuf11 [ref+((mref==mref_fld)) +1] : Refbuf11[ref];
  int**   ref_array     = enc_picture->ref_idx[list];
  int***  mv_array      = enc_picture->mv[list];
  int**   block_sad     = BlockSAD[list][ref][7];
  int     max_width     = img->width  - 17;
  int     max_height    = img->height - 17;
  int     search_range  = max_search_range[list][ref];
  int     max_pos       = (2*search_range+1) * (2*search_range+1);
  byte**  imgY_orig     = imgY_org;
  int     pix_y         = img->pix_y;
  
  //int apply_weights = ( (input->WeightedPrediction && (img->type == P_SLICE || img->type == SP_SLICE)) ||
    //                    (input->WeightedBiprediction && (img->type == B_SLICE || img->type == BS_IMG)));
	int apply_weights = ( (input->WeightedPrediction && (img->type == P_SLICE || img->type == SP_SLICE)) ||
                        (input->WeightedBiprediction && (img->type == B_SLICE)));
  if (apply_weights)
    ref_pic       = img->type==B_SLICE? Refbuf11_w [ref+((enc_picture!=enc_frame_picture)) +1] : Refbuf11_w[ref];
  else
    ref_pic       = listX[list][ref]->imgY_11;

  if(input->InterlaceCodingOption >= MB_CODING && mb_adaptive && img->field_mode)
  {
    
    if (apply_weights)
      ref_pic       = img->type==B_SLICE? Refbuf11_w [ref+(img->field_mode) +1] : Refbuf11_w[ref];
    else
			ref_pic       = img->type==B_SLICE? listX[LIST_0][ref+(img->field_mode) +1]->imgY_11 : listX[LIST_0][ref]->imgY_11;    
    block_sad     = BlockSAD[list][refindex][7];
    pix_y     = img->field_pix_y;
    if(img->top_field)
    {
      //ref_array     = ((img->type!=B_SLICE && img->type!=BS_IMG) ? refFrArr_top : ref>=0 ? fw_refFrArr_top : bw_refFrArr_top);
      //mv_array      = ((img->type!=B_SLICE && img->type!=BS_IMG) ? tmp_mv_top   : ref>=0 ? tmp_fwMV_top    : tmp_bwMV_top);
			ref_array     = ((img->type!=B_SLICE) ? refFrArr_top : ref>=0 ? fw_refFrArr_top : bw_refFrArr_top);
      mv_array      = ((img->type!=B_SLICE) ? tmp_mv_top   : ref>=0 ? tmp_fwMV_top    : tmp_bwMV_top);
      imgY_orig   = imgY_org_top;
    }
    else
    {
      //ref_array     = ((img->type!=B_SLICE && img->type!=BS_IMG) ? refFrArr_bot : ref>=0 ? fw_refFrArr_bot : bw_refFrArr_bot);
      //mv_array      = ((img->type!=B_SLICE && img->type!=BS_IMG) ? tmp_mv_bot   : ref>=0 ? tmp_fwMV_bot    : tmp_bwMV_bot);
      ref_array     = ((img->type!=B_SLICE) ? refFrArr_bot : ref>=0 ? fw_refFrArr_bot : bw_refFrArr_bot);
      mv_array      = ((img->type!=B_SLICE) ? tmp_mv_bot   : ref>=0 ? tmp_fwMV_bot    : tmp_bwMV_bot);