?? transform8x8.c
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/*!
***************************************************************************
* \file transform8x8.c
*
* \brief
* 8x8 transform functions
*
* \author
* Main contributors (see contributors.h for copyright, address and affiliation details)
* - Yuri Vatis <vatis@hhi.de>
* - Jan Muenster <muenster@hhi.de>
* - Lowell Winger <lwinger@lsil.com>
* \date
* 12. October 2003
**************************************************************************
*/
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <limits.h>
#include "global.h"
#include "image.h"
#include "mb_access.h"
#include "elements.h"
#include "cabac.h"
#include "vlc.h"
#include "transform8x8.h"
int cofAC8x8_chroma[2][4][2][18];
#define Q_BITS_8 16
#define DQ_BITS_8 6
#define DQ_ROUND_8 (1<<(DQ_BITS_8-1))
#define max(a, b) (((a) > (b)) ? (a) : (b))
#define min(a, b) (((a) < (b)) ? (a) : (b))
static const int quant_coef8[6][8][8] =
{
{
{13107, 12222, 16777, 12222, 13107, 12222, 16777, 12222},
{12222, 11428, 15481, 11428, 12222, 11428, 15481, 11428},
{16777, 15481, 20972, 15481, 16777, 15481, 20972, 15481},
{12222, 11428, 15481, 11428, 12222, 11428, 15481, 11428},
{13107, 12222, 16777, 12222, 13107, 12222, 16777, 12222},
{12222, 11428, 15481, 11428, 12222, 11428, 15481, 11428},
{16777, 15481, 20972, 15481, 16777, 15481, 20972, 15481},
{12222, 11428, 15481, 11428, 12222, 11428, 15481, 11428}
},
{
{11916, 11058, 14980, 11058, 11916, 11058, 14980, 11058},
{11058, 10826, 14290, 10826, 11058, 10826, 14290, 10826},
{14980, 14290, 19174, 14290, 14980, 14290, 19174, 14290},
{11058, 10826, 14290, 10826, 11058, 10826, 14290, 10826},
{11916, 11058, 14980, 11058, 11916, 11058, 14980, 11058},
{11058, 10826, 14290, 10826, 11058, 10826, 14290, 10826},
{14980, 14290, 19174, 14290, 14980, 14290, 19174, 14290},
{11058, 10826, 14290, 10826, 11058, 10826, 14290, 10826}
},
{
{10082, 9675, 12710, 9675, 10082, 9675, 12710, 9675},
{9675, 8943, 11985, 8943, 9675, 8943, 11985, 8943},
{12710, 11985, 15978, 11985, 12710, 11985, 15978, 11985},
{9675, 8943, 11985, 8943, 9675, 8943, 11985, 8943},
{10082, 9675, 12710, 9675, 10082, 9675, 12710, 9675},
{9675, 8943, 11985, 8943, 9675, 8943, 11985, 8943},
{12710, 11985, 15978, 11985, 12710, 11985, 15978, 11985},
{9675, 8943, 11985, 8943, 9675, 8943, 11985, 8943}
},
{
{9362, 8931, 11984, 8931, 9362, 8931, 11984, 8931},
{8931, 8228, 11259, 8228, 8931, 8228, 11259, 8228},
{11984, 11259, 14913, 11259, 11984, 11259, 14913, 11259},
{8931, 8228, 11259, 8228, 8931, 8228, 11259, 8228},
{9362, 8931, 11984, 8931, 9362, 8931, 11984, 8931},
{8931, 8228, 11259, 8228, 8931, 8228, 11259, 8228},
{11984, 11259, 14913, 11259, 11984, 11259, 14913, 11259},
{8931, 8228, 11259, 8228, 8931, 8228, 11259, 8228}
},
{
{8192, 7740, 10486, 7740, 8192, 7740, 10486, 7740},
{7740, 7346, 9777, 7346, 7740, 7346, 9777, 7346},
{10486, 9777, 13159, 9777, 10486, 9777, 13159, 9777},
{7740, 7346, 9777, 7346, 7740, 7346, 9777, 7346},
{8192, 7740, 10486, 7740, 8192, 7740, 10486, 7740},
{7740, 7346, 9777, 7346, 7740, 7346, 9777, 7346},
{10486, 9777, 13159, 9777, 10486, 9777, 13159, 9777},
{7740, 7346, 9777, 7346, 7740, 7346, 9777, 7346}
},
{
{7282, 6830, 9118, 6830, 7282, 6830, 9118, 6830},
{6830, 6428, 8640, 6428, 6830, 6428, 8640, 6428},
{9118, 8640, 11570, 8640, 9118, 8640, 11570, 8640},
{6830, 6428, 8640, 6428, 6830, 6428, 8640, 6428},
{7282, 6830, 9118, 6830, 7282, 6830, 9118, 6830},
{6830, 6428, 8640, 6428, 6830, 6428, 8640, 6428},
{9118, 8640, 11570, 8640, 9118, 8640, 11570, 8640},
{6830, 6428, 8640, 6428, 6830, 6428, 8640, 6428}
}
};
static const int dequant_coef8[6][8][8] =
{
{
{20, 19, 25, 19, 20, 19, 25, 19},
{19, 18, 24, 18, 19, 18, 24, 18},
{25, 24, 32, 24, 25, 24, 32, 24},
{19, 18, 24, 18, 19, 18, 24, 18},
{20, 19, 25, 19, 20, 19, 25, 19},
{19, 18, 24, 18, 19, 18, 24, 18},
{25, 24, 32, 24, 25, 24, 32, 24},
{19, 18, 24, 18, 19, 18, 24, 18}
},
{
{22, 21, 28, 21, 22, 21, 28, 21},
{21, 19, 26, 19, 21, 19, 26, 19},
{28, 26, 35, 26, 28, 26, 35, 26},
{21, 19, 26, 19, 21, 19, 26, 19},
{22, 21, 28, 21, 22, 21, 28, 21},
{21, 19, 26, 19, 21, 19, 26, 19},
{28, 26, 35, 26, 28, 26, 35, 26},
{21, 19, 26, 19, 21, 19, 26, 19}
},
{
{26, 24, 33, 24, 26, 24, 33, 24},
{24, 23, 31, 23, 24, 23, 31, 23},
{33, 31, 42, 31, 33, 31, 42, 31},
{24, 23, 31, 23, 24, 23, 31, 23},
{26, 24, 33, 24, 26, 24, 33, 24},
{24, 23, 31, 23, 24, 23, 31, 23},
{33, 31, 42, 31, 33, 31, 42, 31},
{24, 23, 31, 23, 24, 23, 31, 23}
},
{
{28, 26, 35, 26, 28, 26, 35, 26},
{26, 25, 33, 25, 26, 25, 33, 25},
{35, 33, 45, 33, 35, 33, 45, 33},
{26, 25, 33, 25, 26, 25, 33, 25},
{28, 26, 35, 26, 28, 26, 35, 26},
{26, 25, 33, 25, 26, 25, 33, 25},
{35, 33, 45, 33, 35, 33, 45, 33},
{26, 25, 33, 25, 26, 25, 33, 25}
},
{
{32, 30, 40, 30, 32, 30, 40, 30},
{30, 28, 38, 28, 30, 28, 38, 28},
{40, 38, 51, 38, 40, 38, 51, 38},
{30, 28, 38, 28, 30, 28, 38, 28},
{32, 30, 40, 30, 32, 30, 40, 30},
{30, 28, 38, 28, 30, 28, 38, 28},
{40, 38, 51, 38, 40, 38, 51, 38},
{30, 28, 38, 28, 30, 28, 38, 28}
},
{
{36, 34, 46, 34, 36, 34, 46, 34},
{34, 32, 43, 32, 34, 32, 43, 32},
{46, 43, 58, 43, 46, 43, 58, 43},
{34, 32, 43, 32, 34, 32, 43, 32},
{36, 34, 46, 34, 36, 34, 46, 34},
{34, 32, 43, 32, 34, 32, 43, 32},
{46, 43, 58, 43, 46, 43, 58, 43},
{34, 32, 43, 32, 34, 32, 43, 32}
}
};
//! single scan pattern
const byte SNGL_SCAN8x8[64][2] = {
{0,0}, {1,0}, {0,1}, {0,2}, {1,1}, {2,0}, {3,0}, {2,1},
{1,2}, {0,3}, {0,4}, {1,3}, {2,2}, {3,1}, {4,0}, {5,0},
{4,1}, {3,2}, {2,3}, {1,4}, {0,5}, {0,6}, {1,5}, {2,4},
{3,3}, {4,2}, {5,1}, {6,0}, {7,0}, {6,1}, {5,2}, {4,3},
{3,4}, {2,5}, {1,6}, {0,7}, {1,7}, {2,6}, {3,5}, {4,4},
{5,3}, {6,2}, {7,1}, {7,2}, {6,3}, {5,4}, {4,5}, {3,6},
{2,7}, {3,7}, {4,6}, {5,5}, {6,4}, {7,3}, {7,4}, {6,5},
{5,6}, {4,7}, {5,7}, {6,6}, {7,5}, {7,6}, {6,7}, {7,7}
};
//! field scan pattern
const byte FIELD_SCAN8x8[64][2] = { // 8x8
{0,0}, {0,1}, {0,2}, {1,0}, {1,1}, {0,3}, {0,4}, {1,2},
{2,0}, {1,3}, {0,5}, {0,6}, {0,7}, {1,4}, {2,1}, {3,0},
{2,2}, {1,5}, {1,6}, {1,7}, {2,3}, {3,1}, {4,0}, {3,2},
{2,4}, {2,5}, {2,6}, {2,7}, {3,3}, {4,1}, {5,0}, {4,2},
{3,4}, {3,5}, {3,6}, {3,7}, {4,3}, {5,1}, {6,0}, {5,2},
{4,4}, {4,5}, {4,6}, {4,7}, {5,3}, {6,1}, {6,2}, {5,4},
{5,5}, {5,6}, {5,7}, {6,3}, {7,0}, {7,1}, {6,4}, {6,5},
{6,6}, {6,7}, {7,2}, {7,3}, {7,4}, {7,5}, {7,6}, {7,7}
};
//! array used to find expensive coefficients
const byte COEFF_COST8x8[2][64] =
{
{3,3,3,3,2,2,2,2,2,2,2,2,1,1,1,1,
1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
{9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9}
};
/*!
*************************************************************************************
* \brief
* 8x8 Intra mode decision for a macroblock
*************************************************************************************
*/
int Mode_Decision_for_new_Intra8x8Macroblock (double lambda, int *min_cost)
{
int cbp=0, b8, cost8x8;
*min_cost = (int)floor(6.0 * lambda + 0.4999);
for (b8=0; b8<4; b8++)
{
if (Mode_Decision_for_new_8x8IntraBlocks (b8, lambda, &cost8x8))
{
cbp |= (1<<b8);
}
*min_cost += cost8x8;
}
return cbp;
}
/*!
*************************************************************************************
* \brief
* 8x8 Intra mode decision for a macroblock
*************************************************************************************
*/
int Mode_Decision_for_new_8x8IntraBlocks (int b8, double lambda, int *min_cost)
{
int ipmode, best_ipmode = 0, i, j, k, x, y, cost, dummy;
int c_nz, nonzero = 0, diff[64];
imgpel rec8x8[8][8];
double rdcost = 0.0;
int block4x4_x, block4x4_y;
int block_x = 8*(b8%2);
int block_y = 8*(b8/2);
int pic_pix_x = img->pix_x+block_x;
int pic_pix_y = img->pix_y+block_y;
int pic_opix_x = img->opix_x+block_x;
int pic_opix_y = img->opix_y+block_y;
int pic_block_x = pic_pix_x/4;
int pic_block_y = pic_pix_y/4;
double min_rdcost = 1e30;
imgpel **imgY_orig = imgY_org;
extern int ****cofAC8x8;
int left_available, up_available, all_available;
int upMode;
int leftMode;
int mostProbableMode;
PixelPos left_block;
PixelPos top_block;
// Residue Color Transform
int residue_R, residue_G, residue_B;
int rate, distortion, temp, b4;
int c_ipmode = img->mb_data[img->current_mb_nr].c_ipred_mode;
int rec8x8_c[2][4][4][4];
getLuma4x4Neighbour(img->current_mb_nr, block_x/4, block_y/4, -1, 0, &left_block);
getLuma4x4Neighbour(img->current_mb_nr, block_x/4, block_y/4, 0, -1, &top_block);
if (input->UseConstrainedIntraPred)
{
top_block.available = top_block.available ? img->intra_block [top_block.mb_addr] : 0;
left_block.available = left_block.available ? img->intra_block [left_block.mb_addr] : 0;
}
if(b8/2)
upMode = top_block.available ? img->ipredmode8x8[top_block.pos_x ][top_block.pos_y ] : -1;
else
upMode = top_block.available ? img->ipredmode[top_block.pos_x ][top_block.pos_y ] : -1;
if(b8%2)
leftMode = left_block.available ? img->ipredmode8x8[left_block.pos_x][left_block.pos_y] : -1;
else
leftMode = left_block.available ? img->ipredmode[left_block.pos_x][left_block.pos_y] : -1;
mostProbableMode = (upMode < 0 || leftMode < 0) ? DC_PRED : upMode < leftMode ? upMode : leftMode;
*min_cost = INT_MAX;
//===== INTRA PREDICTION FOR 8x8 BLOCK =====
intrapred_luma8x8 (pic_pix_x, pic_pix_y, &left_available, &up_available, &all_available);
//===== LOOP OVER ALL 8x8 INTRA PREDICTION MODES =====
for (ipmode=0; ipmode<NO_INTRA_PMODE; ipmode++)
{
if( (ipmode==DC_PRED) ||
((ipmode==VERT_PRED||ipmode==VERT_LEFT_PRED||ipmode==DIAG_DOWN_LEFT_PRED) && up_available ) ||
((ipmode==HOR_PRED||ipmode==HOR_UP_PRED) && left_available ) ||
(all_available) )
{
if (!input->rdopt)
{
for (k=j=0; j<8; j++)
for (i=0; i<8; i++, k++)
{
diff[k] = imgY_orig[pic_opix_y+j][pic_opix_x+i] - img->mprr_3[ipmode][j][i];
}
cost = (ipmode == mostProbableMode) ? 0 : (int)floor(4 * lambda );
cost += SATD8X8 (diff, input->hadamard);
if (cost < *min_cost)
{
best_ipmode = ipmode;
*min_cost = cost;
}
}
else
{
// Residue Color Transform
if(!img->residue_transform_flag)
{
// get prediction and prediction error
for (j=0; j<8; j++)
for (i=0; i<8; i++)
{
img->mpr[block_x+i][block_y+j] = img->mprr_3[ipmode][j][i];
img->m7[i][j] = imgY_orig[pic_opix_y+j][pic_opix_x+i] - img->mprr_3[ipmode][j][i];
}
//===== store the coding state =====
store_coding_state_cs_cm();
// get and check rate-distortion cost
if ((rdcost = RDCost_for_8x8IntraBlocks (&c_nz, b8, ipmode, lambda, min_rdcost, mostProbableMode)) < min_rdcost)
{
//--- set coefficients ---
for (j=0; j<2; j++)
for (i=0; i<65;i++)
for(k=0; k<4; k++) // do 4x now
cofAC8x8[b8][k][j][i]=img->cofAC[b8][k][j][i]; // k vs 0
//--- set reconstruction ---
for (y=0; y<8; y++)
for (x=0; x<8; x++)
rec8x8[y][x] = enc_picture->imgY[pic_pix_y+y][pic_pix_x+x];
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