| /*! |
| *************************************************************************** |
| * \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 "minmax.h" |
| #include "transform8x8.h" |
| #include "macroblock.h" |
| #include "symbol.h" |
| |
| int cofAC8x8_chroma[2][4][2][18]; |
| static int diff64[64]; |
| |
| |
| 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} |
| } |
| }; |
| |
| |
| 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, y, cost, dummy; |
| int c_nz, nonzero = 0; |
| imgpel rec8x8[8][8]; |
| double rdcost = 0.0; |
| int block_x = 8*(b8 & 0x01); |
| int block_y = 8*(b8 >> 1); |
| 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 fadjust8x8[2][16][16]; |
| int left_available, up_available, all_available; |
| |
| signed char upMode; |
| signed char leftMode; |
| int mostProbableMode; |
| |
| PixelPos left_block; |
| PixelPos top_block; |
| |
| Macroblock *currMB = &img->mb_data[img->current_mb_nr]; |
| |
| getLuma4x4Neighbour(img->current_mb_nr, block_x - 1, block_y, &left_block); |
| getLuma4x4Neighbour(img->current_mb_nr, block_x, block_y - 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 >> 1) |
| upMode = top_block.available ? img->ipredmode8x8[top_block.pos_y ][top_block.pos_x ] : -1; |
| else |
| upMode = top_block.available ? img->ipredmode [top_block.pos_y ][top_block.pos_x ] : -1; |
| if(b8 & 0x01) |
| leftMode = left_block.available ? img->ipredmode8x8[left_block.pos_y][left_block.pos_x] : -1; |
| else |
| leftMode = left_block.available ? img->ipredmode[left_block.pos_y][left_block.pos_x] : -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++) |
| { |
| diff64[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 += distortion8x8 (diff64); |
| if (cost < *min_cost) |
| { |
| best_ipmode = ipmode; |
| *min_cost = cost; |
| } |
| } |
| else |
| { |
| // get prediction and prediction error |
| for (j=0; j<8; j++) |
| { |
| memcpy(&img->mpr[block_y+j][block_x],img->mprr_3[ipmode][j], 8 * sizeof(imgpel)); |
| for (i=0; i<8; i++) |
| { |
| img->m7[j][i] = 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(k=0; k<4; k++) // do 4x now |
| { |
| for (j=0; j<2; j++) |
| memcpy(cofAC8x8[b8][k][j],img->cofAC[b8][k][j], 65 * sizeof(int)); |
| } |
| |
| //--- set reconstruction --- |
| for (y=0; y<8; y++) |
| { |
| memcpy(rec8x8[y],&enc_picture->imgY[pic_pix_y+y][pic_pix_x], 8 * sizeof(imgpel)); |
| } |
| |
| if (img->AdaptiveRounding) |
| { |
| for (j=block_y; j<block_y + 8; j++) |
| memcpy(&fadjust8x8[1][j][block_x],&img->fadjust8x8[1][j][block_x], 8 * sizeof(int)); |
| } |
| |
| //--- flag if dct-coefficients must be coded --- |
| nonzero = c_nz; |
| |
| //--- set best mode update minimum cost --- |
| min_rdcost = rdcost; |
| best_ipmode = ipmode; |
| } |
| reset_coding_state_cs_cm(); |
| } |
| } |
| } |
| |
| //===== set intra mode prediction ===== |
| img->ipredmode8x8[pic_block_y][pic_block_x] = (signed char) best_ipmode; |
| currMB->intra_pred_modes8x8[4*b8] = (mostProbableMode == best_ipmode) |
| ? -1 |
| : (best_ipmode < mostProbableMode ? best_ipmode : best_ipmode-1); |
| |
| for(j = img->mb_y*4+(b8 >> 1)*2; j < img->mb_y*4+(b8 >> 1)*2 + 2; j++) //loop 4x4s in the subblock for 8x8 prediction setting |
| memset(&img->ipredmode8x8[j][img->mb_x*4+(b8 & 0x01)*2], best_ipmode, 2 * sizeof(char)); |
| |
| |
| if (!input->rdopt) |
| { |
| // get prediction and prediction error |
| for (j=0; j<8; j++) |
| { |
| memcpy(&img->mpr[block_y+j][block_x],img->mprr_3[best_ipmode][j], 8 * sizeof(imgpel)); |
| for (i=0; i<8; i++) |
| { |
| img->m7[j][i] = imgY_orig[pic_opix_y+j][pic_opix_x+i] - img->mprr_3[best_ipmode][j][i]; |
| } |
| } |
| nonzero = dct_luma8x8 (b8, &dummy, 1); |
| } |
| else |
| { |
| //===== restore coefficients ===== |
| for(k=0; k<4; k++) // do 4x now |
| { |
| for (j=0; j<2; j++) |
| memcpy(img->cofAC[b8][k][j],cofAC8x8[b8][k][j], 65 * sizeof(int)); |
| } |
| |
| if (img->AdaptiveRounding) |
| { |
| for (j=0; j<8; j++) |
| memcpy(&img->fadjust8x8[1][block_y+j][block_x], &fadjust8x8[1][block_y+j][block_x], 8 * sizeof(int)); |
| } |
| |
| //===== restore reconstruction and prediction (needed if single coeffs are removed) ===== |
| for (y=0; y<8; y++) |
| { |
| memcpy(&enc_picture->imgY[pic_pix_y+y][pic_pix_x], rec8x8[y], 8 * sizeof(imgpel)); |
| memcpy(&img->mpr[block_y+y][block_x], img->mprr_3[best_ipmode][y], 8 * sizeof(imgpel)); |
| } |
| } |
| |
| return nonzero; |
| } |
| |
| |
| |
| // Notation for comments regarding prediction and predictors. |
| // The pels of the 4x4 block are labelled a..p. The predictor pels above |
| // are labelled A..H, from the left I..P, and from above left X, as follows: |
| // |
| // Z A B C D E F G H I J K L M N O P |
| // Q a1 b1 c1 d1 e1 f1 g1 h1 |
| // R a2 b2 c2 d2 e2 f2 g2 h2 |
| // S a3 b3 c3 d3 e3 f3 g3 h3 |
| // T a4 b4 c4 d4 e4 f4 g4 h4 |
| // U a5 b5 c5 d5 e5 f5 g5 h5 |
| // V a6 b6 c6 d6 e6 f6 g6 h6 |
| // W a7 b7 c7 d7 e7 f7 g7 h7 |
| // X a8 b8 c8 d8 e8 f8 g8 h8 |
| |
| |
| // Predictor array index definitions |
| #define P_Z (PredPel[0]) |
| #define P_A (PredPel[1]) |
| #define P_B (PredPel[2]) |
| #define P_C (PredPel[3]) |
| #define P_D (PredPel[4]) |
| #define P_E (PredPel[5]) |
| #define P_F (PredPel[6]) |
| #define P_G (PredPel[7]) |
| #define P_H (PredPel[8]) |
| #define P_I (PredPel[9]) |
| #define P_J (PredPel[10]) |
| #define P_K (PredPel[11]) |
| #define P_L (PredPel[12]) |
| #define P_M (PredPel[13]) |
| #define P_N (PredPel[14]) |
| #define P_O (PredPel[15]) |
| #define P_P (PredPel[16]) |
| #define P_Q (PredPel[17]) |
| #define P_R (PredPel[18]) |
| #define P_S (PredPel[19]) |
| #define P_T (PredPel[20]) |
| #define P_U (PredPel[21]) |
| #define P_V (PredPel[22]) |
| #define P_W (PredPel[23]) |
| #define P_X (PredPel[24]) |
| |
| /*! |
| ************************************************************************ |
| * \brief |
| * Make intra 8x8 prediction according to all 9 prediction modes. |
| * The routine uses left and upper neighbouring points from |
| * previous coded blocks to do this (if available). Notice that |
| * inaccessible neighbouring points are signalled with a negative |
| * value in the predmode array . |
| * |
| * \par Input: |
| * Starting point of current 8x8 block image posision |
| * |
| * \par Output: |
| * none |
| ************************************************************************ |
| */ |
| void intrapred_luma8x8(int img_x,int img_y, int *left_available, int *up_available, int *all_available) |
| { |
| int i,j; |
| int s0; |
| static imgpel PredPel[25]; // array of predictor pels |
| imgpel **imgY = enc_picture->imgY; // For MB level frame/field coding tools -- set default to imgY |
| imgpel *imgYpel; |
| imgpel (*cur_pred)[8]; |
| |
| int ioff = (img_x & 15); |
| int joff = (img_y & 15); |
| int mb_nr=img->current_mb_nr; |
| |
| PixelPos pix_a[8]; |
| PixelPos pix_b, pix_c, pix_d; |
| |
| int block_available_up; |
| int block_available_left; |
| int block_available_up_left; |
| int block_available_up_right; |
| |
| for (i=0;i<8;i++) |
| { |
| getNeighbour(mb_nr, ioff -1 , joff +i , IS_LUMA, &pix_a[i]); |
| } |
| |
| getNeighbour(mb_nr, ioff , joff -1 , IS_LUMA, &pix_b); |
| getNeighbour(mb_nr, ioff +8 , joff -1 , IS_LUMA, &pix_c); |
| getNeighbour(mb_nr, ioff -1 , joff -1 , IS_LUMA, &pix_d); |
| |
| pix_c.available = pix_c.available &&!(ioff == 8 && joff == 8); |
| |
| if (input->UseConstrainedIntraPred) |
| { |
| for (i=0, block_available_left=1; i<8;i++) |
| block_available_left &= pix_a[i].available ? img->intra_block[pix_a[i].mb_addr]: 0; |
| block_available_up = pix_b.available ? img->intra_block [pix_b.mb_addr] : 0; |
| block_available_up_right = pix_c.available ? img->intra_block [pix_c.mb_addr] : 0; |
| block_available_up_left = pix_d.available ? img->intra_block [pix_d.mb_addr] : 0; |
| } |
| else |
| { |
| block_available_left = pix_a[0].available; |
| block_available_up = pix_b.available; |
| block_available_up_right = pix_c.available; |
| block_available_up_left = pix_d.available; |
| } |
| |
| *left_available = block_available_left; |
| *up_available = block_available_up; |
| *all_available = block_available_up && block_available_left && block_available_up_left; |
| |
| i = (img_x & 15); |
| j = (img_y & 15); |
| |
| // form predictor pels |
| // form predictor pels |
| if (block_available_up) |
| { |
| imgYpel = &imgY[pix_b.pos_y][pix_b.pos_x]; |
| P_A = *(imgYpel++); |
| P_B = *(imgYpel++); |
| P_C = *(imgYpel++); |
| P_D = *(imgYpel++); |
| P_E = *(imgYpel++); |
| P_F = *(imgYpel++); |
| P_G = *(imgYpel++); |
| P_H = *(imgYpel); |
| } |
| else |
| { |
| P_A = P_B = P_C = P_D = P_E = P_F = P_G = P_H = img->dc_pred_value_luma; |
| } |
| |
| if (block_available_up_right) |
| { |
| imgYpel = &imgY[pix_c.pos_y][pix_c.pos_x]; |
| P_I = *(imgYpel++); |
| P_J = *(imgYpel++); |
| P_K = *(imgYpel++); |
| P_L = *(imgYpel++); |
| P_M = *(imgYpel++); |
| P_N = *(imgYpel++); |
| P_O = *(imgYpel++); |
| P_P = *(imgYpel); |
| |
| } |
| else |
| { |
| P_I = P_J = P_K = P_L = P_M = P_N = P_O = P_P = P_H; |
| } |
| |
| if (block_available_left) |
| { |
| P_Q = imgY[pix_a[0].pos_y][pix_a[0].pos_x]; |
| P_R = imgY[pix_a[1].pos_y][pix_a[1].pos_x]; |
| P_S = imgY[pix_a[2].pos_y][pix_a[2].pos_x]; |
| P_T = imgY[pix_a[3].pos_y][pix_a[3].pos_x]; |
| P_U = imgY[pix_a[4].pos_y][pix_a[4].pos_x]; |
| P_V = imgY[pix_a[5].pos_y][pix_a[5].pos_x]; |
| P_W = imgY[pix_a[6].pos_y][pix_a[6].pos_x]; |
| P_X = imgY[pix_a[7].pos_y][pix_a[7].pos_x]; |
| } |
| else |
| { |
| P_Q = P_R = P_S = P_T = P_U = P_V = P_W = P_X = img->dc_pred_value_luma; |
| } |
| |
| if (block_available_up_left) |
| { |
| P_Z = imgY[pix_d.pos_y][pix_d.pos_x]; |
| } |
| else |
| { |
| P_Z = img->dc_pred_value_luma; |
| } |
| |
| for(i=0;i<9;i++) |
| img->mprr_3[i][0][0]=-1; |
| |
| LowPassForIntra8x8Pred(&(P_Z), block_available_up_left, block_available_up, block_available_left); |
| |
| /////////////////////////////// |
| // make DC prediction |
| /////////////////////////////// |
| s0 = 0; |
| if (block_available_up && block_available_left) |
| { |
| // no edge |
| s0 = rshift_rnd_sf((P_A + P_B + P_C + P_D + P_E + P_F + P_G + P_H + P_Q + P_R + P_S + P_T + P_U + P_V + P_W + P_X), 4); |
| } |
| else if (!block_available_up && block_available_left) |
| { |
| // upper edge |
| s0 = rshift_rnd_sf((P_Q + P_R + P_S + P_T + P_U + P_V + P_W + P_X), 3); |
| } |
| else if (block_available_up && !block_available_left) |
| { |
| // left edge |
| s0 = rshift_rnd_sf((P_A + P_B + P_C + P_D + P_E + P_F + P_G + P_H), 3); |
| } |
| else //if (!block_available_up && !block_available_left) |
| { |
| // top left corner, nothing to predict from |
| s0 = img->dc_pred_value_luma; |
| } |
| |
| // store DC prediction |
| cur_pred = img->mprr_3[DC_PRED]; |
| for (j=0; j < 2*BLOCK_SIZE; j++) |
| { |
| for (i=0; i < 2*BLOCK_SIZE; i++) |
| { |
| cur_pred[i][j] = (imgpel) s0; |
| } |
| } |
| |
| |
| /////////////////////////////// |
| // make horiz and vert prediction |
| /////////////////////////////// |
| cur_pred = img->mprr_3[VERT_PRED]; |
| for (i=0; i < 2*BLOCK_SIZE; i++) |
| { |
| cur_pred[0][i] = |
| cur_pred[1][i] = |
| cur_pred[2][i] = |
| cur_pred[3][i] = |
| cur_pred[4][i] = |
| cur_pred[5][i] = |
| cur_pred[6][i] = |
| cur_pred[7][i] = (imgpel)(&P_A)[i]; |
| } |
| if(!block_available_up) |
| cur_pred[0][0]=-1; |
| |
| cur_pred = img->mprr_3[HOR_PRED]; |
| for (i=0; i < 2*BLOCK_SIZE; i++) |
| { |
| cur_pred[i][0] = |
| cur_pred[i][1] = |
| cur_pred[i][2] = |
| cur_pred[i][3] = |
| cur_pred[i][4] = |
| cur_pred[i][5] = |
| cur_pred[i][6] = |
| cur_pred[i][7] = (imgpel) (&P_Q)[i]; |
| } |
| if(!block_available_left) |
| cur_pred[0][0]=-1; |
| |
| /////////////////////////////////// |
| // make diagonal down left prediction |
| /////////////////////////////////// |
| if (block_available_up) |
| { |
| // Mode DIAG_DOWN_LEFT_PRED |
| cur_pred = img->mprr_3[DIAG_DOWN_LEFT_PRED]; |
| cur_pred[0][0] = (imgpel) ((P_A + P_C + 2*(P_B) + 2) >> 2); |
| cur_pred[0][1] = |
| cur_pred[1][0] = (imgpel) ((P_B + P_D + 2*(P_C) + 2) >> 2); |
| cur_pred[0][2] = |
| cur_pred[1][1] = |
| cur_pred[2][0] = (imgpel) ((P_C + P_E + 2*(P_D) + 2) >> 2); |
| cur_pred[0][3] = |
| cur_pred[1][2] = |
| cur_pred[2][1] = |
| cur_pred[3][0] = (imgpel) ((P_D + P_F + 2*(P_E) + 2) >> 2); |
| cur_pred[0][4] = |
| cur_pred[1][3] = |
| cur_pred[2][2] = |
| cur_pred[3][1] = |
| cur_pred[4][0] = (imgpel) ((P_E + P_G + 2*(P_F) + 2) >> 2); |
| cur_pred[0][5] = |
| cur_pred[1][4] = |
| cur_pred[2][3] = |
| cur_pred[3][2] = |
| cur_pred[4][1] = |
| cur_pred[5][0] = (imgpel) ((P_F + P_H + 2*(P_G) + 2) >> 2); |
| cur_pred[0][6] = |
| cur_pred[1][5] = |
| cur_pred[2][4] = |
| cur_pred[3][3] = |
| cur_pred[4][2] = |
| cur_pred[5][1] = |
| cur_pred[6][0] = (imgpel) ((P_G + P_I + 2*(P_H) + 2) >> 2); |
| cur_pred[0][7] = |
| cur_pred[1][6] = |
| cur_pred[2][5] = |
| cur_pred[3][4] = |
| cur_pred[4][3] = |
| cur_pred[5][2] = |
| cur_pred[6][1] = |
| cur_pred[7][0] = (imgpel) ((P_H + P_J + 2*(P_I) + 2) >> 2); |
| cur_pred[1][7] = |
| cur_pred[2][6] = |
| cur_pred[3][5] = |
| cur_pred[4][4] = |
| cur_pred[5][3] = |
| cur_pred[6][2] = |
| cur_pred[7][1] = (imgpel) ((P_I + P_K + 2*(P_J) + 2) >> 2); |
| cur_pred[2][7] = |
| cur_pred[3][6] = |
| cur_pred[4][5] = |
| cur_pred[5][4] = |
| cur_pred[6][3] = |
| cur_pred[7][2] = (imgpel) ((P_J + P_L + 2*(P_K) + 2) >> 2); |
| cur_pred[3][7] = |
| cur_pred[4][6] = |
| cur_pred[5][5] = |
| cur_pred[6][4] = |
| cur_pred[7][3] = (imgpel) ((P_K + P_M + 2*(P_L) + 2) >> 2); |
| cur_pred[4][7] = |
| cur_pred[5][6] = |
| cur_pred[6][5] = |
| cur_pred[7][4] = (imgpel) ((P_L + P_N + 2*(P_M) + 2) >> 2); |
| cur_pred[5][7] = |
| cur_pred[6][6] = |
| cur_pred[7][5] = (imgpel) ((P_M + P_O + 2*(P_N) + 2) >> 2); |
| cur_pred[6][7] = |
| cur_pred[7][6] = (imgpel) ((P_N + P_P + 2*(P_O) + 2) >> 2); |
| cur_pred[7][7] = (imgpel) ((P_O + 3*(P_P) + 2) >> 2); |
| |
| /////////////////////////////////// |
| // make vertical left prediction |
| /////////////////////////////////// |
| cur_pred = img->mprr_3[VERT_LEFT_PRED]; |
| cur_pred[0][0] = (imgpel) ((P_A + P_B + 1) >> 1); |
| cur_pred[0][1] = |
| cur_pred[2][0] = (imgpel) ((P_B + P_C + 1) >> 1); |
| cur_pred[0][2] = |
| cur_pred[2][1] = |
| cur_pred[4][0] = (imgpel) ((P_C + P_D + 1) >> 1); |
| cur_pred[0][3] = |
| cur_pred[2][2] = |
| cur_pred[4][1] = |
| cur_pred[6][0] = (imgpel) ((P_D + P_E + 1) >> 1); |
| cur_pred[0][4] = |
| cur_pred[2][3] = |
| cur_pred[4][2] = |
| cur_pred[6][1] = (imgpel) ((P_E + P_F + 1) >> 1); |
| cur_pred[0][5] = |
| cur_pred[2][4] = |
| cur_pred[4][3] = |
| cur_pred[6][2] = (imgpel) ((P_F + P_G + 1) >> 1); |
| cur_pred[0][6] = |
| cur_pred[2][5] = |
| cur_pred[4][4] = |
| cur_pred[6][3] = (imgpel) ((P_G + P_H + 1) >> 1); |
| cur_pred[0][7] = |
| cur_pred[2][6] = |
| cur_pred[4][5] = |
| cur_pred[6][4] = (imgpel) ((P_H + P_I + 1) >> 1); |
| cur_pred[2][7] = |
| cur_pred[4][6] = |
| cur_pred[6][5] = (imgpel) ((P_I + P_J + 1) >> 1); |
| cur_pred[4][7] = |
| cur_pred[6][6] = (imgpel) ((P_J + P_K + 1) >> 1); |
| cur_pred[6][7] = (imgpel) ((P_K + P_L + 1) >> 1); |
| cur_pred[1][0] = (imgpel) ((P_A + P_C + 2*P_B + 2) >> 2); |
| cur_pred[1][1] = |
| cur_pred[3][0] = (imgpel) ((P_B + P_D + 2*P_C + 2) >> 2); |
| cur_pred[1][2] = |
| cur_pred[3][1] = |
| cur_pred[5][0] = (imgpel) ((P_C + P_E + 2*P_D + 2) >> 2); |
| cur_pred[1][3] = |
| cur_pred[3][2] = |
| cur_pred[5][1] = |
| cur_pred[7][0] = (imgpel) ((P_D + P_F + 2*P_E + 2) >> 2); |
| cur_pred[1][4] = |
| cur_pred[3][3] = |
| cur_pred[5][2] = |
| cur_pred[7][1] = (imgpel) ((P_E + P_G + 2*P_F + 2) >> 2); |
| cur_pred[1][5] = |
| cur_pred[3][4] = |
| cur_pred[5][3] = |
| cur_pred[7][2] = (imgpel) ((P_F + P_H + 2*P_G + 2) >> 2); |
| cur_pred[1][6] = |
| cur_pred[3][5] = |
| cur_pred[5][4] = |
| cur_pred[7][3] = (imgpel) ((P_G + P_I + 2*P_H + 2) >> 2); |
| cur_pred[1][7] = |
| cur_pred[3][6] = |
| cur_pred[5][5] = |
| cur_pred[7][4] = (imgpel) ((P_H + P_J + 2*P_I + 2) >> 2); |
| cur_pred[3][7] = |
| cur_pred[5][6] = |
| cur_pred[7][5] = (imgpel) ((P_I + P_K + 2*P_J + 2) >> 2); |
| cur_pred[5][7] = |
| cur_pred[7][6] = (imgpel) ((P_J + P_L + 2*P_K + 2) >> 2); |
| cur_pred[7][7] = (imgpel) ((P_K + P_M + 2*P_L + 2) >> 2); |
| } |
| |
| /////////////////////////////////// |
| // make diagonal down right prediction |
| /////////////////////////////////// |
| if (block_available_up && block_available_left && block_available_up_left) |
| { |
| // Mode DIAG_DOWN_RIGHT_PRED |
| cur_pred = img->mprr_3[DIAG_DOWN_RIGHT_PRED]; |
| cur_pred[7][0] = (imgpel) ((P_X + P_V + 2*(P_W) + 2) >> 2); |
| cur_pred[6][0] = |
| cur_pred[7][1] = (imgpel) ((P_W + P_U + 2*(P_V) + 2) >> 2); |
| cur_pred[5][0] = |
| cur_pred[6][1] = |
| cur_pred[7][2] = (imgpel) ((P_V + P_T + 2*(P_U) + 2) >> 2); |
| cur_pred[4][0] = |
| cur_pred[5][1] = |
| cur_pred[6][2] = |
| cur_pred[7][3] = (imgpel) ((P_U + P_S + 2*(P_T) + 2) >> 2); |
| cur_pred[3][0] = |
| cur_pred[4][1] = |
| cur_pred[5][2] = |
| cur_pred[6][3] = |
| cur_pred[7][4] = (imgpel) ((P_T + P_R + 2*(P_S) + 2) >> 2); |
| cur_pred[2][0] = |
| cur_pred[3][1] = |
| cur_pred[4][2] = |
| cur_pred[5][3] = |
| cur_pred[6][4] = |
| cur_pred[7][5] = (imgpel) ((P_S + P_Q + 2*(P_R) + 2) >> 2); |
| cur_pred[1][0] = |
| cur_pred[2][1] = |
| cur_pred[3][2] = |
| cur_pred[4][3] = |
| cur_pred[5][4] = |
| cur_pred[6][5] = |
| cur_pred[7][6] = (imgpel) ((P_R + P_Z + 2*(P_Q) + 2) >> 2); |
| cur_pred[0][0] = |
| cur_pred[1][1] = |
| cur_pred[2][2] = |
| cur_pred[3][3] = |
| cur_pred[4][4] = |
| cur_pred[5][5] = |
| cur_pred[6][6] = |
| cur_pred[7][7] = (imgpel) ((P_Q + P_A + 2*(P_Z) + 2) >> 2); |
| cur_pred[0][1] = |
| cur_pred[1][2] = |
| cur_pred[2][3] = |
| cur_pred[3][4] = |
| cur_pred[4][5] = |
| cur_pred[5][6] = |
| cur_pred[6][7] = (imgpel) ((P_Z + P_B + 2*(P_A) + 2) >> 2); |
| cur_pred[0][2] = |
| cur_pred[1][3] = |
| cur_pred[2][4] = |
| cur_pred[3][5] = |
| cur_pred[4][6] = |
| cur_pred[5][7] = (imgpel) ((P_A + P_C + 2*(P_B) + 2) >> 2); |
| cur_pred[0][3] = |
| cur_pred[1][4] = |
| cur_pred[2][5] = |
| cur_pred[3][6] = |
| cur_pred[4][7] = (imgpel) ((P_B + P_D + 2*(P_C) + 2) >> 2); |
| cur_pred[0][4] = |
| cur_pred[1][5] = |
| cur_pred[2][6] = |
| cur_pred[3][7] = (imgpel) ((P_C + P_E + 2*(P_D) + 2) >> 2); |
| cur_pred[0][5] = |
| cur_pred[1][6] = |
| cur_pred[2][7] = (imgpel) ((P_D + P_F + 2*(P_E) + 2) >> 2); |
| cur_pred[0][6] = |
| cur_pred[1][7] = (imgpel) ((P_E + P_G + 2*(P_F) + 2) >> 2); |
| cur_pred[0][7] = (imgpel) ((P_F + P_H + 2*(P_G) + 2) >> 2); |
| |
| /////////////////////////////////// |
| // make vertical right prediction |
| /////////////////////////////////// |
| cur_pred = img->mprr_3[VERT_RIGHT_PRED]; |
| cur_pred[0][0] = |
| cur_pred[2][1] = |
| cur_pred[4][2] = |
| cur_pred[6][3] = (imgpel) ((P_Z + P_A + 1) >> 1); |
| cur_pred[0][1] = |
| cur_pred[2][2] = |
| cur_pred[4][3] = |
| cur_pred[6][4] = (imgpel) ((P_A + P_B + 1) >> 1); |
| cur_pred[0][2] = |
| cur_pred[2][3] = |
| cur_pred[4][4] = |
| cur_pred[6][5] = (imgpel) ((P_B + P_C + 1) >> 1); |
| cur_pred[0][3] = |
| cur_pred[2][4] = |
| cur_pred[4][5] = |
| cur_pred[6][6] = (imgpel) ((P_C + P_D + 1) >> 1); |
| cur_pred[0][4] = |
| cur_pred[2][5] = |
| cur_pred[4][6] = |
| cur_pred[6][7] = (imgpel) ((P_D + P_E + 1) >> 1); |
| cur_pred[0][5] = |
| cur_pred[2][6] = |
| cur_pred[4][7] = (imgpel) ((P_E + P_F + 1) >> 1); |
| cur_pred[0][6] = |
| cur_pred[2][7] = (imgpel) ((P_F + P_G + 1) >> 1); |
| cur_pred[0][7] = (imgpel) ((P_G + P_H + 1) >> 1); |
| cur_pred[1][0] = |
| cur_pred[3][1] = |
| cur_pred[5][2] = |
| cur_pred[7][3] = (imgpel) ((P_Q + P_A + 2*P_Z + 2) >> 2); |
| cur_pred[1][1] = |
| cur_pred[3][2] = |
| cur_pred[5][3] = |
| cur_pred[7][4] = (imgpel) ((P_Z + P_B + 2*P_A + 2) >> 2); |
| cur_pred[1][2] = |
| cur_pred[3][3] = |
| cur_pred[5][4] = |
| cur_pred[7][5] = (imgpel) ((P_A + P_C + 2*P_B + 2) >> 2); |
| cur_pred[1][3] = |
| cur_pred[3][4] = |
| cur_pred[5][5] = |
| cur_pred[7][6] = (imgpel) ((P_B + P_D + 2*P_C + 2) >> 2); |
| cur_pred[1][4] = |
| cur_pred[3][5] = |
| cur_pred[5][6] = |
| cur_pred[7][7] = (imgpel) ((P_C + P_E + 2*P_D + 2) >> 2); |
| cur_pred[1][5] = |
| cur_pred[3][6] = |
| cur_pred[5][7] = (imgpel) ((P_D + P_F + 2*P_E + 2) >> 2); |
| cur_pred[1][6] = |
| cur_pred[3][7] = (imgpel) ((P_E + P_G + 2*P_F + 2) >> 2); |
| cur_pred[1][7] = (imgpel) ((P_F + P_H + 2*P_G + 2) >> 2); |
| cur_pred[2][0] = |
| cur_pred[4][1] = |
| cur_pred[6][2] = (imgpel) ((P_R + P_Z + 2*P_Q + 2) >> 2); |
| cur_pred[3][0] = |
| cur_pred[5][1] = |
| cur_pred[7][2] = (imgpel) ((P_S + P_Q + 2*P_R + 2) >> 2); |
| cur_pred[4][0] = |
| cur_pred[6][1] = (imgpel) ((P_T + P_R + 2*P_S + 2) >> 2); |
| cur_pred[5][0] = |
| cur_pred[7][1] = (imgpel) ((P_U + P_S + 2*P_T + 2) >> 2); |
| cur_pred[6][0] = (imgpel) ((P_V + P_T + 2*P_U + 2) >> 2); |
| cur_pred[7][0] = (imgpel) ((P_W + P_U + 2*P_V + 2) >> 2); |
| |
| /////////////////////////////////// |
| // make horizontal down prediction |
| /////////////////////////////////// |
| cur_pred = img->mprr_3[HOR_DOWN_PRED]; |
| cur_pred[0][0] = |
| cur_pred[1][2] = |
| cur_pred[2][4] = |
| cur_pred[3][6] = (imgpel) ((P_Q + P_Z + 1) >> 1); |
| cur_pred[1][0] = |
| cur_pred[2][2] = |
| cur_pred[3][4] = |
| cur_pred[4][6] = (imgpel) ((P_R + P_Q + 1) >> 1); |
| cur_pred[2][0] = |
| cur_pred[3][2] = |
| cur_pred[4][4] = |
| cur_pred[5][6] = (imgpel) ((P_S + P_R + 1) >> 1); |
| cur_pred[3][0] = |
| cur_pred[4][2] = |
| cur_pred[5][4] = |
| cur_pred[6][6] = (imgpel) ((P_T + P_S + 1) >> 1); |
| cur_pred[4][0] = |
| cur_pred[5][2] = |
| cur_pred[6][4] = |
| cur_pred[7][6] = (imgpel) ((P_U + P_T + 1) >> 1); |
| cur_pred[5][0] = |
| cur_pred[6][2] = |
| cur_pred[7][4] = (imgpel) ((P_V + P_U + 1) >> 1); |
| cur_pred[6][0] = |
| cur_pred[7][2] = (imgpel) ((P_W + P_V + 1) >> 1); |
| cur_pred[7][0] = (imgpel) ((P_X + P_W + 1) >> 1); |
| cur_pred[0][1] = |
| cur_pred[1][3] = |
| cur_pred[2][5] = |
| cur_pred[3][7] = (imgpel) ((P_Q + P_A + 2*P_Z + 2) >> 2); |
| cur_pred[1][1] = |
| cur_pred[2][3] = |
| cur_pred[3][5] = |
| cur_pred[4][7] = (imgpel) ((P_Z + P_R + 2*P_Q + 2) >> 2); |
| cur_pred[2][1] = |
| cur_pred[3][3] = |
| cur_pred[4][5] = |
| cur_pred[5][7] = (imgpel) ((P_Q + P_S + 2*P_R + 2) >> 2); |
| cur_pred[3][1] = |
| cur_pred[4][3] = |
| cur_pred[5][5] = |
| cur_pred[6][7] = (imgpel) ((P_R + P_T + 2*P_S + 2) >> 2); |
| cur_pred[4][1] = |
| cur_pred[5][3] = |
| cur_pred[6][5] = |
| cur_pred[7][7] = (imgpel) ((P_S + P_U + 2*P_T + 2) >> 2); |
| cur_pred[5][1] = |
| cur_pred[6][3] = |
| cur_pred[7][5] = (imgpel) ((P_T + P_V + 2*P_U + 2) >> 2); |
| cur_pred[6][1] = |
| cur_pred[7][3] = (imgpel) ((P_U + P_W + 2*P_V + 2) >> 2); |
| cur_pred[7][1] = (imgpel) ((P_V + P_X + 2*P_W + 2) >> 2); |
| cur_pred[0][2] = |
| cur_pred[1][4] = |
| cur_pred[2][6] = (imgpel) ((P_Z + P_B + 2*P_A + 2) >> 2); |
| cur_pred[0][3] = |
| cur_pred[1][5] = |
| cur_pred[2][7] = (imgpel) ((P_A + P_C + 2*P_B + 2) >> 2); |
| cur_pred[0][4] = |
| cur_pred[1][6] = (imgpel) ((P_B + P_D + 2*P_C + 2) >> 2); |
| cur_pred[0][5] = |
| cur_pred[1][7] = (imgpel) ((P_C + P_E + 2*P_D + 2) >> 2); |
| cur_pred[0][6] = (imgpel) ((P_D + P_F + 2*P_E + 2) >> 2); |
| cur_pred[0][7] = (imgpel) ((P_E + P_G + 2*P_F + 2) >> 2); |
| } |
| |
| /////////////////////////////////// |
| // make horizontal up prediction |
| /////////////////////////////////// |
| if (block_available_left) |
| { |
| cur_pred = img->mprr_3[HOR_UP_PRED]; |
| cur_pred[0][0] = (imgpel) ((P_Q + P_R + 1) >> 1); |
| cur_pred[1][0] = |
| cur_pred[0][2] = (imgpel) ((P_R + P_S + 1) >> 1); |
| cur_pred[2][0] = |
| cur_pred[1][2] = |
| cur_pred[0][4] = (imgpel) ((P_S + P_T + 1) >> 1); |
| cur_pred[3][0] = |
| cur_pred[2][2] = |
| cur_pred[1][4] = |
| cur_pred[0][6] = (imgpel) ((P_T + P_U + 1) >> 1); |
| cur_pred[4][0] = |
| cur_pred[3][2] = |
| cur_pred[2][4] = |
| cur_pred[1][6] = (imgpel) ((P_U + P_V + 1) >> 1); |
| cur_pred[5][0] = |
| cur_pred[4][2] = |
| cur_pred[3][4] = |
| cur_pred[2][6] = (imgpel) ((P_V + P_W + 1) >> 1); |
| cur_pred[6][0] = |
| cur_pred[5][2] = |
| cur_pred[4][4] = |
| cur_pred[3][6] = (imgpel) ((P_W + P_X + 1) >> 1); |
| cur_pred[4][6] = |
| cur_pred[4][7] = |
| cur_pred[5][4] = |
| cur_pred[5][5] = |
| cur_pred[5][6] = |
| cur_pred[5][7] = |
| cur_pred[6][2] = |
| cur_pred[6][3] = |
| cur_pred[6][4] = |
| cur_pred[6][5] = |
| cur_pred[6][6] = |
| cur_pred[6][7] = |
| cur_pred[7][0] = |
| cur_pred[7][1] = |
| cur_pred[7][2] = |
| cur_pred[7][3] = |
| cur_pred[7][4] = |
| cur_pred[7][5] = |
| cur_pred[7][6] = |
| cur_pred[7][7] = (imgpel) P_X; |
| cur_pred[6][1] = |
| cur_pred[5][3] = |
| cur_pred[4][5] = |
| cur_pred[3][7] = (imgpel) ((P_W + 3*P_X + 2) >> 2); |
| cur_pred[5][1] = |
| cur_pred[4][3] = |
| cur_pred[3][5] = |
| cur_pred[2][7] = (imgpel) ((P_X + P_V + 2*P_W + 2) >> 2); |
| cur_pred[4][1] = |
| cur_pred[3][3] = |
| cur_pred[2][5] = |
| cur_pred[1][7] = (imgpel) ((P_W + P_U + 2*P_V + 2) >> 2); |
| cur_pred[3][1] = |
| cur_pred[2][3] = |
| cur_pred[1][5] = |
| cur_pred[0][7] = (imgpel) ((P_V + P_T + 2*P_U + 2) >> 2); |
| cur_pred[2][1] = |
| cur_pred[1][3] = |
| cur_pred[0][5] = (imgpel) ((P_U + P_S + 2*P_T + 2) >> 2); |
| cur_pred[1][1] = |
| cur_pred[0][3] = (imgpel) ((P_T + P_R + 2*P_S + 2) >> 2); |
| cur_pred[0][1] = (imgpel) ((P_S + P_Q + 2*P_R + 2) >> 2); |
| } |
| } |
| |
| /*! |
| ************************************************************************************* |
| * \brief |
| * Prefiltering for Intra8x8 prediction |
| ************************************************************************************* |
| */ |
| void LowPassForIntra8x8Pred(imgpel *PredPel, int block_up_left, int block_up, int block_left) |
| { |
| int i; |
| imgpel LoopArray[25]; |
| |
| memcpy(LoopArray,PredPel, 25 * sizeof(imgpel)); |
| |
| if(block_up) |
| { |
| if(block_up_left) |
| { |
| LoopArray[1] = (((&P_Z)[0] + ((&P_Z)[1]<<1) + (&P_Z)[2] + 2)>>2); |
| } |
| else |
| LoopArray[1] = (((&P_Z)[1] + ((&P_Z)[1]<<1) + (&P_Z)[2] + 2)>>2); |
| |
| |
| for(i = 2; i <16; i++) |
| { |
| LoopArray[i] = (((&P_Z)[i-1] + ((&P_Z)[i]<<1) + (&P_Z)[i+1] + 2)>>2); |
| } |
| LoopArray[16] = ((P_P + (P_P<<1) + P_O + 2)>>2); |
| } |
| |
| if(block_up_left) |
| { |
| if(block_up && block_left) |
| { |
| LoopArray[0] = ((P_Q + (P_Z<<1) + P_A +2)>>2); |
| } |
| else |
| { |
| if(block_up) |
| LoopArray[0] = ((P_Z + (P_Z<<1) + P_A +2)>>2); |
| else |
| if(block_left) |
| LoopArray[0] = ((P_Z + (P_Z<<1) + P_Q +2)>>2); |
| } |
| } |
| |
| if(block_left) |
| { |
| if(block_up_left) |
| LoopArray[17] = ((P_Z + (P_Q<<1) + P_R + 2)>>2); |
| else |
| LoopArray[17] = ((P_Q + (P_Q<<1) + P_R + 2)>>2); |
| |
| for(i = 18; i <24; i++) |
| { |
| LoopArray[i] = (((&P_Z)[i-1] + ((&P_Z)[i]<<1) + (&P_Z)[i+1] + 2)>>2); |
| } |
| LoopArray[24] = ((P_W + (P_X<<1) + P_X + 2)>>2); |
| } |
| |
| memcpy(PredPel, LoopArray, 25 * sizeof(imgpel)); |
| } |
| |
| |
| |
| |
| |
| /*! |
| ************************************************************************************* |
| * \brief |
| * R-D Cost for an 8x8 Intra block |
| ************************************************************************************* |
| */ |
| |
| double RDCost_for_8x8IntraBlocks(int *nonzero, int b8, int ipmode, double lambda, double min_rdcost, int mostProbableMode) |
| { |
| double rdcost = 0.0; |
| int dummy, x, y, rate; |
| int64 distortion = 0; |
| int block_x = 8*(b8 & 0x01); |
| int block_y = 8*(b8 >> 1); |
| int pic_pix_x = img->pix_x+block_x; |
| int pic_pix_y = img->pix_y+block_y; |
| int pic_opix_y = img->opix_y+block_y; |
| imgpel **imgY_orig = imgY_org; |
| imgpel **imgY = enc_picture->imgY; |
| |
| Slice *currSlice = img->currentSlice; |
| SyntaxElement se; |
| const int *partMap = assignSE2partition[input->partition_mode]; |
| DataPartition *dataPart; |
| |
| //===== perform DCT, Q, IQ, IDCT, Reconstruction ===== |
| dummy = 0; |
| |
| *nonzero = dct_luma8x8 (b8, &dummy, 1); |
| |
| //===== get distortion (SSD) of 8x8 block ===== |
| for (y=0; y<8; y++) |
| for (x=pic_pix_x; x<pic_pix_x+8; x++) |
| distortion += img->quad [imgY_orig[pic_opix_y+y][x] - imgY[pic_pix_y+y][x]]; |
| |
| //===== RATE for INTRA PREDICTION MODE (SYMBOL MODE MUST BE SET TO UVLC) ===== |
| se.value1 = (mostProbableMode == ipmode) ? -1 : ipmode < mostProbableMode ? ipmode : ipmode-1; |
| |
| //--- set position and type --- |
| se.context = b8; |
| se.type = SE_INTRAPREDMODE; |
| |
| //--- choose data partition --- |
| if (img->type!=B_SLICE) |
| dataPart = &(currSlice->partArr[partMap[SE_INTRAPREDMODE]]); |
| else |
| dataPart = &(currSlice->partArr[partMap[SE_BFRAME]]); |
| |
| //--- encode and update rate --- |
| writeIntraPredMode (&se, dataPart); |
| /* |
| if (input->symbol_mode == UVLC) |
| writeIntraPredMode_CAVLC(currSE, dataPart); |
| else |
| { |
| currSE->writing = writeIntraPredMode_CABAC; |
| dataPart->writeSyntaxElement (currSE, dataPart); |
| } |
| */ |
| |
| rate = se.len; |
| |
| //===== RATE for LUMINANCE COEFFICIENTS ===== |
| |
| if (input->symbol_mode == UVLC) |
| { |
| int b4; |
| for(b4=0; b4<4; b4++) |
| rate += writeCoeff4x4_CAVLC (LUMA, b8, b4, 0); |
| } |
| else |
| { |
| rate += writeLumaCoeff8x8_CABAC (b8, 1); |
| } |
| |
| rdcost = (double)distortion + lambda*(double)rate; |
| |
| return rdcost; |
| } |
| |
| |
| /*! |
| ************************************************************************ |
| * \brief |
| * The routine performs transform,quantization,inverse transform, adds the diff. |
| * to the prediction and writes the result to the decoded luma frame. Includes the |
| * RD constrained quantization also. |
| * |
| * \par Input: |
| * b8: Block position inside a macro block (0,1,2,3). |
| * |
| * \par Output: |
| * nonzero: 0 if no levels are nonzero. 1 if there are nonzero levels. |
| * coeff_cost: Counter for nonzero coefficients, used to discard expensive levels. |
| ************************************************************************ |
| */ |
| |
| #define MC(coeff) ((coeff)&3) |
| |
| int dct_luma8x8(int b8,int *coeff_cost, int intra) |
| { |
| int i,j,ilev,coeff_ctr; |
| int level,scan_pos,run; |
| int nonzero; |
| int qp_per,qp_rem,q_bits; |
| |
| int block_x = 8*(b8 & 0x01); |
| int block_y = 8*(b8 >> 1); |
| int* ACLevel = img->cofAC[b8][0][0]; |
| int* ACRun = img->cofAC[b8][0][1]; |
| int m6[8][8]; |
| int a[8], b[8]; |
| int scan_poss[4],runs[4]; |
| int pix_x, pix_y, ipix_y; |
| int **levelscale,**leveloffset; |
| int **invlevelscale; |
| int MCcoeff; |
| Macroblock *currMB = &img->mb_data[img->current_mb_nr]; |
| |
| Boolean lossless_qpprime = (Boolean) ((img->qp_scaled)==0 && img->lossless_qpprime_flag==1); |
| const byte (*pos_scan)[2] = currMB->is_field_mode ? FIELD_SCAN8x8 : SNGL_SCAN8x8; |
| |
| qp_per = qp_per_matrix[(img->qp_scaled - MIN_QP)]; |
| qp_rem = qp_rem_matrix[(img->qp_scaled - MIN_QP)]; |
| q_bits = Q_BITS_8+qp_per; |
| levelscale = LevelScale8x8Luma[intra][qp_rem]; |
| leveloffset = LevelOffset8x8Luma[intra][qp_per]; |
| invlevelscale = InvLevelScale8x8Luma[intra][qp_rem]; |
| |
| // horizontal transform |
| if (!lossless_qpprime) |
| { |
| for( i=0; i<8; i++) |
| { |
| a[0] = img->m7[i][0] + img->m7[i][7]; |
| a[1] = img->m7[i][1] + img->m7[i][6]; |
| a[2] = img->m7[i][2] + img->m7[i][5]; |
| a[3] = img->m7[i][3] + img->m7[i][4]; |
| |
| b[0] = a[0] + a[3]; |
| b[1] = a[1] + a[2]; |
| b[2] = a[0] - a[3]; |
| b[3] = a[1] - a[2]; |
| |
| a[4] = img->m7[i][0] - img->m7[i][7]; |
| a[5] = img->m7[i][1] - img->m7[i][6]; |
| a[6] = img->m7[i][2] - img->m7[i][5]; |
| a[7] = img->m7[i][3] - img->m7[i][4]; |
| |
| b[4]= a[5] + a[6] + ((a[4]>>1) + a[4]); |
| b[5]= a[4] - a[7] - ((a[6]>>1) + a[6]); |
| b[6]= a[4] + a[7] - ((a[5]>>1) + a[5]); |
| b[7]= a[5] - a[6] + ((a[7]>>1) + a[7]); |
| |
| m6[0][i] = b[0] + b[1]; |
| m6[2][i] = b[2] + (b[3]>>1); |
| m6[4][i] = b[0] - b[1]; |
| m6[6][i] = (b[2]>>1) - b[3]; |
| m6[1][i] = b[4] + (b[7]>>2); |
| m6[3][i] = b[5] + (b[6]>>2); |
| m6[5][i] = b[6] - (b[5]>>2); |
| m6[7][i] = - b[7] + (b[4]>>2); |
| } |
| // vertical transform |
| for( i=0; i<8; i++) |
| { |
| a[0] = m6[i][0] + m6[i][7]; |
| a[1] = m6[i][1] + m6[i][6]; |
| a[2] = m6[i][2] + m6[i][5]; |
| a[3] = m6[i][3] + m6[i][4]; |
| |
| b[0] = a[0] + a[3]; |
| b[1] = a[1] + a[2]; |
| b[2] = a[0] - a[3]; |
| b[3] = a[1] - a[2]; |
| |
| a[4] = m6[i][0] - m6[i][7]; |
| a[5] = m6[i][1] - m6[i][6]; |
| a[6] = m6[i][2] - m6[i][5]; |
| a[7] = m6[i][3] - m6[i][4]; |
| |
| b[4]= a[5] + a[6] + ((a[4]>>1) + a[4]); |
| b[5]= a[4] - a[7] - ((a[6]>>1) + a[6]); |
| b[6]= a[4] + a[7] - ((a[5]>>1) + a[5]); |
| b[7]= a[5] - a[6] + ((a[7]>>1) + a[7]); |
| |
| img->m7[0][i] = b[0] + b[1]; |
| img->m7[2][i] = b[2] + (b[3]>>1); |
| img->m7[4][i] = b[0] - b[1]; |
| img->m7[6][i] = (b[2]>>1) - b[3]; |
| img->m7[1][i] = b[4] + (b[7]>>2); |
| img->m7[3][i] = b[5] + (b[6]>>2); |
| img->m7[5][i] = b[6] - (b[5]>>2); |
| img->m7[7][i] = - b[7] + (b[4]>>2); |
| } |
| |
| // Quant |
| nonzero=FALSE; |
| |
| run=-1; |
| scan_pos=0; |
| |
| runs[0] = runs[1] = runs[2] = runs[3] = -1; |
| scan_poss[0] = scan_poss[1] = scan_poss[2] = scan_poss[3] = 0; |
| |
| for (coeff_ctr = 0; coeff_ctr < 64; coeff_ctr++) |
| { |
| |
| i=pos_scan[coeff_ctr][0]; |
| j=pos_scan[coeff_ctr][1]; |
| |
| MCcoeff = MC(coeff_ctr); |
| run++; |
| ilev=0; |
| |
| runs[MCcoeff]++; |
| |
| level = (iabs (img->m7[j][i]) * levelscale[j][i] + leveloffset[j][i]) >> q_bits; |
| |
| |
| if (img->AdaptiveRounding) |
| { |
| img->fadjust8x8[intra][block_y + j][block_x + i] = ( level == 0 ) |
| ? 0 |
| : rshift_rnd_sf((AdaptRndWeight * (iabs (img->m7[j][i]) * levelscale[j][i] - (level << q_bits))), (q_bits + 1)); |
| } |
| |
| if (level != 0) |
| { |
| nonzero=TRUE; |
| |
| if (currMB->luma_transform_size_8x8_flag && input->symbol_mode == UVLC) |
| { |
| *coeff_cost += (level > 1) ? MAX_VALUE : COEFF_COST8x8[input->disthres][runs[MCcoeff]]; |
| |
| img->cofAC[b8][MCcoeff][0][scan_poss[MCcoeff]] = isignab(level,img->m7[j][i]); |
| img->cofAC[b8][MCcoeff][1][scan_poss[MCcoeff]] = runs[MCcoeff]; |
| ++scan_poss[MCcoeff]; |
| runs[MCcoeff]=-1; |
| } |
| else |
| { |
| *coeff_cost += (level > 1) ? MAX_VALUE : COEFF_COST8x8[input->disthres][run]; |
| ACLevel[scan_pos] = isignab(level,img->m7[j][i]); |
| ACRun [scan_pos] = run; |
| ++scan_pos; |
| run=-1; // reset zero level counter |
| } |
| |
| level = isignab(level, img->m7[j][i]); |
| |
| ilev = rshift_rnd_sf(level*invlevelscale[j][i]<<qp_per, 6); // dequantization |
| } |
| img->m7[j][i] = ilev; |
| } |
| } |
| else |
| { |
| // Quant |
| nonzero=FALSE; |
| |
| run=-1; |
| scan_pos=0; |
| |
| runs[0]=runs[1]=runs[2]=runs[3]=-1; |
| scan_poss[0]=scan_poss[1]=scan_poss[2]=scan_poss[3]=0; |
| |
| for (coeff_ctr=0; coeff_ctr < 64; coeff_ctr++) |
| { |
| i=pos_scan[coeff_ctr][0]; |
| j=pos_scan[coeff_ctr][1]; |
| |
| MCcoeff = MC(coeff_ctr); |
| run++; |
| ilev=0; |
| |
| runs[MCcoeff]++; |
| |
| level = iabs (img->m7[j][i]); |
| |
| if (img->AdaptiveRounding) |
| { |
| img->fadjust8x8[intra][block_y+j][block_x+i] = 0; |
| } |
| |
| if (level != 0) |
| { |
| nonzero=TRUE; |
| |
| if (currMB->luma_transform_size_8x8_flag && input->symbol_mode == UVLC) |
| { |
| *coeff_cost += MAX_VALUE; |
| |
| img->cofAC[b8][MCcoeff][0][scan_poss[MCcoeff]] = isignab(level,img->m7[j][i]); |
| img->cofAC[b8][MCcoeff][1][scan_poss[MCcoeff]] = runs[MCcoeff]; |
| ++scan_poss[MCcoeff]; |
| runs[MCcoeff]=-1; |
| } |
| else |
| { |
| *coeff_cost += MAX_VALUE; |
| ACLevel[scan_pos] = isignab(level,img->m7[j][i]); |
| ACRun [scan_pos] = run; |
| ++scan_pos; |
| run=-1; // reset zero level counter |
| } |
| |
| level = isignab(level, img->m7[j][i]); |
| ilev = level; |
| } |
| } |
| } |
| if (!currMB->luma_transform_size_8x8_flag || input->symbol_mode != UVLC) |
| ACLevel[scan_pos] = 0; |
| else |
| { |
| for(i=0; i<4; i++) |
| img->cofAC[b8][i][0][scan_poss[i]] = 0; |
| } |
| |
| |
| // Inverse Transform |
| // horizontal inverse transform |
| if (!lossless_qpprime) |
| { |
| for( i=0; i<8; i++) |
| { |
| a[0] = img->m7[i][0] + img->m7[i][4]; |
| a[4] = img->m7[i][0] - img->m7[i][4]; |
| a[2] = (img->m7[i][2]>>1) - img->m7[i][6]; |
| a[6] = img->m7[i][2] + (img->m7[i][6]>>1); |
| |
| b[0] = a[0] + a[6]; |
| b[2] = a[4] + a[2]; |
| b[4] = a[4] - a[2]; |
| b[6] = a[0] - a[6]; |
| |
| a[1] = -img->m7[i][3] + img->m7[i][5] - img->m7[i][7] - (img->m7[i][7]>>1); |
| a[3] = img->m7[i][1] + img->m7[i][7] - img->m7[i][3] - (img->m7[i][3]>>1); |
| a[5] = -img->m7[i][1] + img->m7[i][7] + img->m7[i][5] + (img->m7[i][5]>>1); |
| a[7] = img->m7[i][3] + img->m7[i][5] + img->m7[i][1] + (img->m7[i][1]>>1); |
| |
| b[1] = a[1] + (a[7]>>2); |
| b[7] = -(a[1]>>2) + a[7]; |
| b[3] = a[3] + (a[5]>>2); |
| b[5] = (a[3]>>2) - a[5]; |
| |
| m6[0][i] = b[0] + b[7]; |
| m6[1][i] = b[2] + b[5]; |
| m6[2][i] = b[4] + b[3]; |
| m6[3][i] = b[6] + b[1]; |
| m6[4][i] = b[6] - b[1]; |
| m6[5][i] = b[4] - b[3]; |
| m6[6][i] = b[2] - b[5]; |
| m6[7][i] = b[0] - b[7]; |
| } |
| |
| // vertical inverse transform |
| for( i=0; i<8; i++) |
| { |
| a[0] = m6[i][0] + m6[i][4]; |
| a[4] = m6[i][0] - m6[i][4]; |
| a[2] = (m6[i][2]>>1) - m6[i][6]; |
| a[6] = m6[i][2] + (m6[i][6]>>1); |
| |
| b[0] = a[0] + a[6]; |
| b[2] = a[4] + a[2]; |
| b[4] = a[4] - a[2]; |
| b[6] = a[0] - a[6]; |
| |
| a[1] = -m6[i][3] + m6[i][5] - m6[i][7] - (m6[i][7]>>1); |
| a[3] = m6[i][1] + m6[i][7] - m6[i][3] - (m6[i][3]>>1); |
| a[5] = -m6[i][1] + m6[i][7] + m6[i][5] + (m6[i][5]>>1); |
| a[7] = m6[i][3] + m6[i][5] + m6[i][1] + (m6[i][1]>>1); |
| |
| b[1] = a[1] + (a[7]>>2); |
| b[7] = -(a[1]>>2) + a[7]; |
| b[3] = a[3] + (a[5]>>2); |
| b[5] = (a[3]>>2) - a[5]; |
| |
| img->m7[0][i] = b[0] + b[7]; |
| img->m7[1][i] = b[2] + b[5]; |
| img->m7[2][i] = b[4] + b[3]; |
| img->m7[3][i] = b[6] + b[1]; |
| img->m7[4][i] = b[6] - b[1]; |
| img->m7[5][i] = b[4] - b[3]; |
| img->m7[6][i] = b[2] - b[5]; |
| img->m7[7][i] = b[0] - b[7]; |
| } |
| |
| for( j=0; j<2*BLOCK_SIZE; j++) |
| { |
| pix_y = block_y + j; |
| ipix_y = img->pix_y + pix_y; |
| for( i=0; i<2*BLOCK_SIZE; i++) |
| { |
| pix_x = block_x + i; |
| img->m7[j][i] = iClip1( img->max_imgpel_value, rshift_rnd_sf((img->m7[j][i]+((long)img->mpr[pix_y][pix_x] << DQ_BITS_8)),DQ_BITS_8)); |
| enc_picture->imgY[ipix_y][img->pix_x + pix_x]= (imgpel) img->m7[j][i]; |
| } |
| } |
| } |
| else |
| { |
| for( j=0; j<2*BLOCK_SIZE; j++) |
| { |
| pix_y = block_y + j; |
| ipix_y = img->pix_y + pix_y; |
| for( i=0; i<2*BLOCK_SIZE; i++) |
| { |
| pix_x = block_x + i; |
| img->m7[j][i] = img->m7[j][i] + img->mpr[pix_y][block_x+i]; |
| enc_picture->imgY[ipix_y][img->pix_x + pix_x]= (imgpel) img->m7[j][i]; |
| } |
| } |
| } |
| |
| // Decoded block moved to frame memory |
| return nonzero; |
| } |
| |
