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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> * * \date * 12. October 2003 ************************************************************************** */ #include <stdlib.h> #include <string.h> #include "transform8x8.h" #define Q_BITS_8 16 #define DQ_BITS_8 6 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} } }; #ifdef _NEW_8x8_ARRAYS_INCLUDED_ //! 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] = { {0,0}, {0,1}, {0,2}, {1,0}, {1,1}, {0,3}, {0,4}, {1,2}, {2,0}, {2,1}, {1,3}, {0,5}, {0,6}, {1,4}, {2,2}, {3,0}, {3,1}, {2,3}, {1,5}, {0,7}, {1,6}, {2,4}, {3,2}, {4,0}, {4,1}, {3,3}, {2,5}, {1,7}, {2,6}, {3,4}, {4,2}, {5,0}, {5,1}, {4,3}, {3,5}, {2,7}, {3,6}, {4,4}, {5,2}, {6,0}, {6,1}, {5,3}, {4,5}, {3,7}, {4,6}, {5,4}, {6,2}, {7,0}, {7,1}, {6,3}, {5,5}, {4,7}, {5,6}, {6,4}, {7,2}, {7,3}, {6,5}, {5,7}, {6,6}, {7,4}, {7,5}, {6,7}, {7,6}, {7,7} }; //! array used to find expencive coefficients const byte COEFF_COST8x8[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 }; #endif // 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 * ************************************************************************ */ int intrapred8x8( struct img_par *img, //!< image parameters int b8) { int i,j; int s0; imgpel PredPel[25]; // array of predictor pels imgpel **imgY = dec_picture->imgY; // For MB level frame/field coding tools -- set default to imgY 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; int img_block_x = (img->mb_x)*4 + 2*(b8%2); int img_block_y = (img->mb_y)*4 + 2*(b8/2); int ioff = (b8%2)*8; int joff = (b8/2)*8; int jpos0 = joff , jpos1 = joff + 1, jpos2 = joff + 2, jpos3 = joff + 3; int jpos4 = joff + 4, jpos5 = joff + 5, jpos6 = joff + 6, jpos7 = joff + 7; int ipos0 = ioff , ipos1 = ioff + 1, ipos2 = ioff + 2, ipos3 = ioff + 3; int ipos4 = ioff + 4, ipos5 = ioff + 5, ipos6 = ioff + 6, ipos7 = ioff + 7; int jpos, ipos; imgpel *pred_pels; byte predmode = img->ipredmode[img_block_y][img_block_x]; 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 (active_pps->constrained_intra_pred_flag) { 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; // form predictor pels // form predictor pels if (block_available_up) { pred_pels = &imgY[pix_b.pos_y][pix_b.pos_x]; P_A = pred_pels[0]; P_B = pred_pels[1]; P_C = pred_pels[2]; P_D = pred_pels[3]; P_E = pred_pels[4]; P_F = pred_pels[5]; P_G = pred_pels[6]; P_H = pred_pels[7]; } 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) { pred_pels = &imgY[pix_c.pos_y][pix_c.pos_x]; P_I = pred_pels[0]; P_J = pred_pels[1]; P_K = pred_pels[2]; P_L = pred_pels[3]; P_M = pred_pels[4]; P_N = pred_pels[5]; P_O = pred_pels[6]; P_P = pred_pels[7]; } 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; } LowPassForIntra8x8Pred(&(P_Z), block_available_up_left, block_available_up, block_available_left); //img->mpr[y][x] switch(predmode) { case DC_PRED: s0 = 0; if (block_available_up && block_available_left) { // no edge s0 = (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 + 8) >> 4; } else if (!block_available_up && block_available_left) { // upper edge s0 = (P_Q + P_R + P_S + P_T + P_U + P_V + P_W + P_X + 4) >> 3; } else if (block_available_up && !block_available_left) { // left edge s0 = (P_A + P_B + P_C + P_D + P_E + P_F + P_G + P_H + 4) >> 3; } else //if (!block_available_up && !block_available_left) { // top left corner, nothing to predict from s0 = img->dc_pred_value_luma; } for(j = joff; j < joff + 2*BLOCK_SIZE; j++) for(i = ioff; i < ioff + 2*BLOCK_SIZE; i++) img->mpr[j][i] = (imgpel) s0; break; case VERT_PRED: if (!block_available_up) printf ("warning: Intra_8x8_Vertical prediction mode not allowed at mb %d\n",img->current_mb_nr); for (i=0; i < 2*BLOCK_SIZE; i++) { ipos = i+ioff; img->mpr[jpos0][ipos] = img->mpr[jpos1][ipos] = img->mpr[jpos2][ipos] = img->mpr[jpos3][ipos] = img->mpr[jpos4][ipos] = img->mpr[jpos5][ipos] = img->mpr[jpos6][ipos] = img->mpr[jpos7][ipos] = (imgpel) (&P_A)[i]; } break; case HOR_PRED: if (!block_available_left) printf ("warning: Intra_8x8_Horizontal prediction mode not allowed at mb %d\n",img->current_mb_nr); for (j=0; j < 2*BLOCK_SIZE; j++) { jpos = j + joff; img->mpr[jpos][ipos0] = img->mpr[jpos][ipos1] = img->mpr[jpos][ipos2] = img->mpr[jpos][ipos3] = img->mpr[jpos][ipos4] = img->mpr[jpos][ipos5] = img->mpr[jpos][ipos6] = img->mpr[jpos][ipos7] = (imgpel) (&P_Q)[j]; } break; case DIAG_DOWN_LEFT_PRED: if (!block_available_up) printf ("warning: Intra_8x8_Diagonal_Down_Left prediction mode not allowed at mb %d\n",img->current_mb_nr); // Mode DIAG_DOWN_LEFT_PRED img->mpr[jpos0][ipos0] = (imgpel) ((P_A + P_C + 2*(P_B) + 2) >> 2); img->mpr[jpos1][ipos0] = img->mpr[jpos0][ipos1] = (imgpel) ((P_B + P_D + 2*(P_C) + 2) >> 2); img->mpr[jpos2][ipos0] = img->mpr[jpos1][ipos1] = img->mpr[jpos0][ipos2] = (imgpel) ((P_C + P_E + 2*(P_D) + 2) >> 2); img->mpr[jpos3][ipos0] = img->mpr[jpos2][ipos1] = img->mpr[jpos1][ipos2] = img->mpr[jpos0][ipos3] = (imgpel) ((P_D + P_F + 2*(P_E) + 2) >> 2); img->mpr[jpos4][ipos0] = img->mpr[jpos3][ipos1] = img->mpr[jpos2][ipos2] = img->mpr[jpos1][ipos3] = img->mpr[jpos0][ipos4] = (imgpel) ((P_E + P_G + 2*(P_F) + 2) >> 2); img->mpr[jpos5][ipos0] = img->mpr[jpos4][ipos1] = img->mpr[jpos3][ipos2] = img->mpr[jpos2][ipos3] = img->mpr[jpos1][ipos4] = img->mpr[jpos0][ipos5] = (imgpel) ((P_F + P_H + 2*(P_G) + 2) >> 2); img->mpr[jpos6][ipos0] = img->mpr[jpos5][ipos1] = img->mpr[jpos4][ipos2] = img->mpr[jpos3][ipos3] = img->mpr[jpos2][ipos4] = img->mpr[jpos1][ipos5] = img->mpr[jpos0][ipos6] = (imgpel) ((P_G + P_I + 2*(P_H) + 2) >> 2); img->mpr[jpos7][ipos0] = img->mpr[jpos6][ipos1] = img->mpr[jpos5][ipos2] = img->mpr[jpos4][ipos3] = img->mpr[jpos3][ipos4] = img->mpr[jpos2][ipos5] = img->mpr[jpos1][ipos6] = img->mpr[jpos0][ipos7] = (imgpel) ((P_H + P_J + 2*(P_I) + 2) >> 2); img->mpr[jpos7][ipos1] = img->mpr[jpos6][ipos2] = img->mpr[jpos5][ipos3] = img->mpr[jpos4][ipos4] = img->mpr[jpos3][ipos5] = img->mpr[jpos2][ipos6] = img->mpr[jpos1][ipos7] = (imgpel) ((P_I + P_K + 2*(P_J) + 2) >> 2); img->mpr[jpos7][ipos2] = img->mpr[jpos6][ipos3] = img->mpr[jpos5][ipos4] = img->mpr[jpos4][ipos5] = img->mpr[jpos3][ipos6] = img->mpr[jpos2][ipos7] = (imgpel) ((P_J + P_L + 2*(P_K) + 2) >> 2); img->mpr[jpos7][ipos3] = img->mpr[jpos6][ipos4] = img->mpr[jpos5][ipos5] = img->mpr[jpos4][ipos6] = img->mpr[jpos3][ipos7] = (imgpel) ((P_K + P_M + 2*(P_L) + 2) >> 2); img->mpr[jpos7][ipos4] = img->mpr[jpos6][ipos5] = img->mpr[jpos5][ipos6] = img->mpr[jpos4][ipos7] = (imgpel) ((P_L + P_N + 2*(P_M) + 2) >> 2); img->mpr[jpos7][ipos5] = img->mpr[jpos6][ipos6] = img->mpr[jpos5][ipos7] = (imgpel) ((P_M + P_O + 2*(P_N) + 2) >> 2); img->mpr[jpos7][ipos6] = img->mpr[jpos6][ipos7] = (imgpel) ((P_N + P_P + 2*(P_O) + 2) >> 2); img->mpr[jpos7][ipos7] = (imgpel) ((P_O + 3*(P_P) + 2) >> 2); break; case VERT_LEFT_PRED: if (!block_available_up) printf ("warning: Intra_4x4_Vertical_Left prediction mode not allowed at mb %d\n",img->current_mb_nr); img->mpr[jpos0][ipos0] = (imgpel) ((P_A + P_B + 1) >> 1); img->mpr[jpos0][ipos1] = img->mpr[jpos2][ipos0] = (imgpel) ((P_B + P_C + 1) >> 1); img->mpr[jpos0][ipos2] = img->mpr[jpos2][ipos1] = img->mpr[jpos4][ipos0] = (imgpel) ((P_C + P_D + 1) >> 1); img->mpr[jpos0][ipos3] = img->mpr[jpos2][ipos2] = img->mpr[jpos4][ipos1] = img->mpr[jpos6][ipos0] = (imgpel) ((P_D + P_E + 1) >> 1); img->mpr[jpos0][ipos4] = img->mpr[jpos2][ipos3] = img->mpr[jpos4][ipos2] = img->mpr[jpos6][ipos1] = (imgpel) ((P_E + P_F + 1) >> 1); img->mpr[jpos0][ipos5] = img->mpr[jpos2][ipos4] = img->mpr[jpos4][ipos3] = img->mpr[jpos6][ipos2] = (imgpel) ((P_F + P_G + 1) >> 1); img->mpr[jpos0][ipos6] = img->mpr[jpos2][ipos5] = img->mpr[jpos4][ipos4] = img->mpr[jpos6][ipos3] = (imgpel) ((P_G + P_H + 1) >> 1); img->mpr[jpos0][ipos7] = img->mpr[jpos2][ipos6] = img->mpr[jpos4][ipos5] = img->mpr[jpos6][ipos4] = (imgpel) ((P_H + P_I + 1) >> 1); img->mpr[jpos2][ipos7] = img->mpr[jpos4][ipos6] = img->mpr[jpos6][ipos5] = (imgpel) ((P_I + P_J + 1) >> 1); img->mpr[jpos4][ipos7] = img->mpr[jpos6][ipos6] = (imgpel) ((P_J + P_K + 1) >> 1); img->mpr[jpos6][ipos7] = (imgpel) ((P_K + P_L + 1) >> 1); img->mpr[jpos1][ipos0] = (imgpel) ((P_A + P_C + 2*P_B + 2) >> 2); img->mpr[jpos1][ipos1] = img->mpr[jpos3][ipos0] = (imgpel) ((P_B + P_D + 2*P_C + 2) >> 2); img->mpr[jpos1][ipos2] = img->mpr[jpos3][ipos1] = img->mpr[jpos5][ipos0] = (imgpel) ((P_C + P_E + 2*P_D + 2) >> 2); img->mpr[jpos1][ipos3] = img->mpr[jpos3][ipos2] = img->mpr[jpos5][ipos1] = img->mpr[jpos7][ipos0] = (imgpel) ((P_D + P_F + 2*P_E + 2) >> 2); img->mpr[jpos1][ipos4] = img->mpr[jpos3][ipos3] = img->mpr[jpos5][ipos2] = img->mpr[jpos7][ipos1] = (imgpel) ((P_E + P_G + 2*P_F + 2) >> 2); img->mpr[jpos1][ipos5] = img->mpr[jpos3][ipos4] = img->mpr[jpos5][ipos3] = img->mpr[jpos7][ipos2] = (imgpel) ((P_F + P_H + 2*P_G + 2) >> 2); img->mpr[jpos1][ipos6] = img->mpr[jpos3][ipos5] = img->mpr[jpos5][ipos4] = img->mpr[jpos7][ipos3] = (imgpel) ((P_G + P_I + 2*P_H + 2) >> 2); img->mpr[jpos1][ipos7] = img->mpr[jpos3][ipos6] = img->mpr[jpos5][ipos5] = img->mpr[jpos7][ipos4] = (imgpel) ((P_H + P_J + 2*P_I + 2) >> 2); img->mpr[jpos3][ipos7] = img->mpr[jpos5][ipos6] = img->mpr[jpos7][ipos5] = (imgpel) ((P_I + P_K + 2*P_J + 2) >> 2); img->mpr[jpos5][ipos7] = img->mpr[jpos7][ipos6] = (imgpel) ((P_J + P_L + 2*P_K + 2) >> 2); img->mpr[jpos7][ipos7] = (imgpel) ((P_K + P_M + 2*P_L + 2) >> 2); break; case DIAG_DOWN_RIGHT_PRED: if ((!block_available_up)||(!block_available_left)||(!block_available_up_left)) printf ("warning: Intra_8x8_Diagonal_Down_Right prediction mode not allowed at mb %d\n",img->current_mb_nr); // Mode DIAG_DOWN_RIGHT_PRED img->mpr[jpos7][ipos0] = (imgpel) ((P_X + P_V + 2*(P_W) + 2) >> 2); img->mpr[jpos6][ipos0] = img->mpr[jpos7][ipos1] = (imgpel) ((P_W + P_U + 2*(P_V) + 2) >> 2); img->mpr[jpos5][ipos0] = img->mpr[jpos6][ipos1] = img->mpr[jpos7][ipos2] = (imgpel) ((P_V + P_T + 2*(P_U) + 2) >> 2); img->mpr[jpos4][ipos0] = img->mpr[jpos5][ipos1] = img->mpr[jpos6][ipos2] = img->mpr[jpos7][ipos3] = (imgpel) ((P_U + P_S + 2*(P_T) + 2) >> 2); img->mpr[jpos3][ipos0] = img->mpr[jpos4][ipos1] = img->mpr[jpos5][ipos2] = img->mpr[jpos6][ipos3] = img->mpr[jpos7][ipos4] = (imgpel) ((P_T + P_R + 2*(P_S) + 2) >> 2); img->mpr[jpos2][ipos0] = img->mpr[jpos3][ipos1] = img->mpr[jpos4][ipos2] = img->mpr[jpos5][ipos3] = img->mpr[jpos6][ipos4] = img->mpr[jpos7][ipos5] = (imgpel) ((P_S + P_Q + 2*(P_R) + 2) >> 2); img->mpr[jpos1][ipos0] = img->mpr[jpos2][ipos1] = img->mpr[jpos3][ipos2] = img->mpr[jpos4][ipos3] = img->mpr[jpos5][ipos4] = img->mpr[jpos6][ipos5] = img->mpr[jpos7][ipos6] = (imgpel) ((P_R + P_Z + 2*(P_Q) + 2) >> 2); img->mpr[jpos0][ipos0] = img->mpr[jpos1][ipos1] = img->mpr[jpos2][ipos2] = img->mpr[jpos3][ipos3] = img->mpr[jpos4][ipos4] = img->mpr[jpos5][ipos5] = img->mpr[jpos6][ipos6] = img->mpr[jpos7][ipos7] = (imgpel) ((P_Q + P_A + 2*(P_Z) + 2) >> 2); img->mpr[jpos0][ipos1] = img->mpr[jpos1][ipos2] = img->mpr[jpos2][ipos3] = img->mpr[jpos3][ipos4] = img->mpr[jpos4][ipos5] = img->mpr[jpos5][ipos6] = img->mpr[jpos6][ipos7] = (imgpel) ((P_Z + P_B + 2*(P_A) + 2) >> 2); img->mpr[jpos0][ipos2] = img->mpr[jpos1][ipos3] = img->mpr[jpos2][ipos4] = img->mpr[jpos3][ipos5] = img->mpr[jpos4][ipos6] = img->mpr[jpos5][ipos7] = (imgpel) ((P_A + P_C + 2*(P_B) + 2) >> 2); img->mpr[jpos0][ipos3] = img->mpr[jpos1][ipos4] = img->mpr[jpos2][ipos5] = img->mpr[jpos3][ipos6] = img->mpr[jpos4][ipos7] = (imgpel) ((P_B + P_D + 2*(P_C) + 2) >> 2); img->mpr[jpos0][ipos4] = img->mpr[jpos1][ipos5] = img->mpr[jpos2][ipos6] = img->mpr[jpos3][ipos7] = (imgpel) ((P_C + P_E + 2*(P_D) + 2) >> 2); img->mpr[jpos0][ipos5] = img->mpr[jpos1][ipos6] = img->mpr[jpos2][ipos7] = (imgpel) ((P_D + P_F + 2*(P_E) + 2) >> 2); img->mpr[jpos0][ipos6] = img->mpr[jpos1][ipos7] = (imgpel) ((P_E + P_G + 2*(P_F) + 2) >> 2); img->mpr[jpos0][ipos7] = (imgpel) ((P_F + P_H + 2*(P_G) + 2) >> 2); break; case VERT_RIGHT_PRED:/* diagonal prediction -22.5 deg to horizontal plane */ if ((!block_available_up)||(!block_available_left)||(!block_available_up_left)) printf ("warning: Intra_8x8_Vertical_Right prediction mode not allowed at mb %d\n",img->current_mb_nr); img->mpr[jpos0][ipos0] = img->mpr[jpos2][ipos1] = img->mpr[jpos4][ipos2] = img->mpr[jpos6][ipos3] = (imgpel) ((P_Z + P_A + 1) >> 1); img->mpr[jpos0][ipos1] = img->mpr[jpos2][ipos2] = img->mpr[jpos4][ipos3] = img->mpr[jpos6][ipos4] = (imgpel) ((P_A + P_B + 1) >> 1); img->mpr[jpos0][ipos2] = img->mpr[jpos2][ipos3] = img->mpr[jpos4][ipos4] = img->mpr[jpos6][ipos5] = (imgpel) ((P_B + P_C + 1) >> 1); img->mpr[jpos0][ipos3] = img->mpr[jpos2][ipos4] = img->mpr[jpos4][ipos5] = img->mpr[jpos6][ipos6] = (imgpel) ((P_C + P_D + 1) >> 1); img->mpr[jpos0][ipos4] = img->mpr[jpos2][ipos5] = img->mpr[jpos4][ipos6] = img->mpr[jpos6][ipos7] = (imgpel) ((P_D + P_E + 1) >> 1); img->mpr[jpos0][ipos5] = img->mpr[jpos2][ipos6] = img->mpr[jpos4][ipos7] = (imgpel) ((P_E + P_F + 1) >> 1); img->mpr[jpos0][ipos6] = img->mpr[jpos2][ipos7] = (imgpel) ((P_F + P_G + 1) >> 1); img->mpr[jpos0][ipos7] = (imgpel) ((P_G + P_H + 1) >> 1); img->mpr[jpos1][ipos0] = img->mpr[jpos3][ipos1] = img->mpr[jpos5][ipos2] = img->mpr[jpos7][ipos3] = (imgpel) ((P_Q + P_A + 2*P_Z + 2) >> 2); img->mpr[jpos1][ipos1] = img->mpr[jpos3][ipos2] = img->mpr[jpos5][ipos3] = img->mpr[jpos7][ipos4] = (imgpel) ((P_Z + P_B + 2*P_A + 2) >> 2); img->mpr[jpos1][ipos2] = img->mpr[jpos3][ipos3] = img->mpr[jpos5][ipos4] = img->mpr[jpos7][ipos5] = (imgpel) ((P_A + P_C + 2*P_B + 2) >> 2); img->mpr[jpos1][ipos3] = img->mpr[jpos3][ipos4] = img->mpr[jpos5][ipos5] = img->mpr[jpos7][ipos6] = (imgpel) ((P_B + P_D + 2*P_C + 2) >> 2); img->mpr[jpos1][ipos4] = img->mpr[jpos3][ipos5] = img->mpr[jpos5][ipos6] = img->mpr[jpos7][ipos7] = (imgpel) ((P_C + P_E + 2*P_D + 2) >> 2); img->mpr[jpos1][ipos5] = img->mpr[jpos3][ipos6] = img->mpr[jpos5][ipos7] = (imgpel) ((P_D + P_F + 2*P_E + 2) >> 2); img->mpr[jpos1][ipos6] = img->mpr[jpos3][ipos7] = (imgpel) ((P_E + P_G + 2*P_F + 2) >> 2); img->mpr[jpos1][ipos7] = (imgpel) ((P_F + P_H + 2*P_G + 2) >> 2); img->mpr[jpos2][ipos0] = img->mpr[jpos4][ipos1] = img->mpr[jpos6][ipos2] = (imgpel) ((P_R + P_Z + 2*P_Q + 2) >> 2); img->mpr[jpos3][ipos0] = img->mpr[jpos5][ipos1] = img->mpr[jpos7][ipos2] = (imgpel) ((P_S + P_Q + 2*P_R + 2) >> 2); img->mpr[jpos4][ipos0] = img->mpr[jpos6][ipos1] = (imgpel) ((P_T + P_R + 2*P_S + 2) >> 2); img->mpr[jpos5][ipos0] = img->mpr[jpos7][ipos1] = (imgpel) ((P_U + P_S + 2*P_T + 2) >> 2); img->mpr[jpos6][ipos0] = (imgpel) ((P_V + P_T + 2*P_U + 2) >> 2); img->mpr[jpos7][ipos0] = (imgpel) ((P_W + P_U + 2*P_V + 2) >> 2); break; case HOR_DOWN_PRED:/* diagonal prediction -22.5 deg to horizontal plane */ if ((!block_available_up)||(!block_available_left)||(!block_available_up_left)) printf ("warning: Intra_8x8_Horizontal_Down prediction mode not allowed at mb %d\n",img->current_mb_nr); img->mpr[jpos0][ipos0] = img->mpr[jpos1][ipos2] = img->mpr[jpos2][ipos4] = img->mpr[jpos3][ipos6] = (imgpel) ((P_Q + P_Z + 1) >> 1); img->mpr[jpos1][ipos0] = img->mpr[jpos2][ipos2] = img->mpr[jpos3][ipos4] = img->mpr[jpos4][ipos6] = (imgpel) ((P_R + P_Q + 1) >> 1); img->mpr[jpos2][ipos0] = img->mpr[jpos3][ipos2] = img->mpr[jpos4][ipos4] = img->mpr[jpos5][ipos6] = (imgpel) ((P_S + P_R + 1) >> 1); img->mpr[jpos3][ipos0] = img->mpr[jpos4][ipos2] = img->mpr[jpos5][ipos4] = img->mpr[jpos6][ipos6] = (imgpel) ((P_T + P_S + 1) >> 1); img->mpr[jpos4][ipos0] = img->mpr[jpos5][ipos2] = img->mpr[jpos6][ipos4] = img->mpr[jpos7][ipos6] = (imgpel) ((P_U + P_T + 1) >> 1); img->mpr[jpos5][ipos0] = img->mpr[jpos6][ipos2] = img->mpr[jpos7][ipos4] = (imgpel) ((P_V + P_U + 1) >> 1); img->mpr[jpos6][ipos0] = img->mpr[jpos7][ipos2] = (imgpel) ((P_W + P_V + 1) >> 1); img->mpr[jpos7][ipos0] = (imgpel) ((P_X + P_W + 1) >> 1); img->mpr[jpos0][ipos1] = img->mpr[jpos1][ipos3] = img->mpr[jpos2][ipos5] = img->mpr[jpos3][ipos7] = (imgpel) ((P_Q + P_A + 2*P_Z + 2) >> 2); img->mpr[jpos1][ipos1] = img->mpr[jpos2][ipos3] = img->mpr[jpos3][ipos5] = img->mpr[jpos4][ipos7] = (imgpel) ((P_Z + P_R + 2*P_Q + 2) >> 2); img->mpr[jpos2][ipos1] = img->mpr[jpos3][ipos3] = img->mpr[jpos4][ipos5] = img->mpr[jpos5][ipos7] = (imgpel) ((P_Q + P_S + 2*P_R + 2) >> 2); img->mpr[jpos3][ipos1] = img->mpr[jpos4][ipos3] = img->mpr[jpos5][ipos5] = img->mpr[jpos6][ipos7] = (imgpel) ((P_R + P_T + 2*P_S + 2) >> 2); img->mpr[jpos4][ipos1] = img->mpr[jpos5][ipos3] = img->mpr[jpos6][ipos5] = img->mpr[jpos7][ipos7] = (imgpel) ((P_S + P_U + 2*P_T + 2) >> 2); img->mpr[jpos5][ipos1] = img->mpr[jpos6][ipos3] = img->mpr[jpos7][ipos5] = (imgpel) ((P_T + P_V + 2*P_U + 2) >> 2); img->mpr[jpos6][ipos1] = img->mpr[jpos7][ipos3] = (imgpel) ((P_U + P_W + 2*P_V + 2) >> 2); img->mpr[jpos7][ipos1] = (imgpel) ((P_V + P_X + 2*P_W + 2) >> 2); img->mpr[jpos0][ipos2] = img->mpr[jpos1][ipos4] = img->mpr[jpos2][ipos6] = (imgpel) ((P_Z + P_B + 2*P_A + 2) >> 2); img->mpr[jpos0][ipos3] = img->mpr[jpos1][ipos5] = img->mpr[jpos2][ipos7] = (imgpel) ((P_A + P_C + 2*P_B + 2) >> 2); img->mpr[jpos0][ipos4] = img->mpr[jpos1][ipos6] = (imgpel) ((P_B + P_D + 2*P_C + 2) >> 2); img->mpr[jpos0][ipos5] = img->mpr[jpos1][ipos7] = (imgpel) ((P_C + P_E + 2*P_D + 2) >> 2); img->mpr[jpos0][ipos6] = (imgpel) ((P_D + P_F + 2*P_E + 2) >> 2); img->mpr[jpos0][ipos7] = (imgpel) ((P_E + P_G + 2*P_F + 2) >> 2); break; case HOR_UP_PRED:/* diagonal prediction -22.5 deg to horizontal plane */ if (!block_available_left) printf ("warning: Intra_8x8_Horizontal_Up prediction mode not allowed at mb %d\n",img->current_mb_nr); img->mpr[jpos0][ipos0] = (imgpel) ((P_Q + P_R + 1) >> 1); img->mpr[jpos1][ipos0] = img->mpr[jpos0][ipos2] = (imgpel) ((P_R + P_S + 1) >> 1); img->mpr[jpos2][ipos0] = img->mpr[jpos1][ipos2] = img->mpr[jpos0][ipos4] = (imgpel) ((P_S + P_T + 1) >> 1); img->mpr[jpos3][ipos0] = img->mpr[jpos2][ipos2] = img->mpr[jpos1][ipos4] = img->mpr[jpos0][ipos6] = (imgpel) ((P_T + P_U + 1) >> 1); img->mpr[jpos4][ipos0] = img->mpr[jpos3][ipos2] = img->mpr[jpos2][ipos4] = img->mpr[jpos1][ipos6] = (imgpel) ((P_U + P_V + 1) >> 1); img->mpr[jpos5][ipos0] = img->mpr[jpos4][ipos2] = img->mpr[jpos3][ipos4] = img->mpr[jpos2][ipos6] = (imgpel) ((P_V + P_W + 1) >> 1); img->mpr[jpos6][ipos0] = img->mpr[jpos5][ipos2] = img->mpr[jpos4][ipos4] = img->mpr[jpos3][ipos6] = (imgpel) ((P_W + P_X + 1) >> 1); img->mpr[jpos4][ipos6] = img->mpr[jpos4][ipos7] = img->mpr[jpos5][ipos4] = img->mpr[jpos5][ipos5] = img->mpr[jpos5][ipos6] = img->mpr[jpos5][ipos7] = img->mpr[jpos6][ipos2] = img->mpr[jpos6][ipos3] = img->mpr[jpos6][ipos4] = img->mpr[jpos6][ipos5] = img->mpr[jpos6][ipos6] = img->mpr[jpos6][ipos7] = img->mpr[jpos7][ipos0] = img->mpr[jpos7][ipos1] = img->mpr[jpos7][ipos2] = img->mpr[jpos7][ipos3] = img->mpr[jpos7][ipos4] = img->mpr[jpos7][ipos5] = img->mpr[jpos7][ipos6] = img->mpr[jpos7][ipos7] = (imgpel) P_X; img->mpr[jpos6][ipos1] = img->mpr[jpos5][ipos3] = img->mpr[jpos4][ipos5] = img->mpr[jpos3][ipos7] = (imgpel) ((P_W + 3*P_X + 2) >> 2); img->mpr[jpos5][ipos1] = img->mpr[jpos4][ipos3] = img->mpr[jpos3][ipos5] = img->mpr[jpos2][ipos7] = (imgpel) ((P_X + P_V + 2*P_W + 2) >> 2); img->mpr[jpos4][ipos1] = img->mpr[jpos3][ipos3] = img->mpr[jpos2][ipos5] = img->mpr[jpos1][ipos7] = (imgpel) ((P_W + P_U + 2*P_V + 2) >> 2); img->mpr[jpos3][ipos1] = img->mpr[jpos2][ipos3] = img->mpr[jpos1][ipos5] = img->mpr[jpos0][ipos7] = (imgpel) ((P_V + P_T + 2*P_U + 2) >> 2); img->mpr[jpos2][ipos1] = img->mpr[jpos1][ipos3] = img->mpr[jpos0][ipos5] = (imgpel) ((P_U + P_S + 2*P_T + 2) >> 2); img->mpr[jpos1][ipos1] = img->mpr[jpos0][ipos3] = (imgpel) ((P_T + P_R + 2*P_S + 2) >> 2); img->mpr[jpos0][ipos1] = (imgpel) ((P_S + P_Q + 2*P_R + 2) >> 2); break; default: printf("Error: illegal intra_4x4 prediction mode: %d\n",predmode); return SEARCH_SYNC; break; } return DECODING_OK; } /*! ************************************************************************************* * \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[0], &PredPel[0], 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[0], &LoopArray[0], 25 * sizeof(imgpel)); } /*! *********************************************************************** * \brief * Inverse 8x8 transformation *********************************************************************** */ void itrans8x8(struct img_par *img, //!< image parameters int ioff, //!< index to 4x4 block int joff) //!< { int i,j; int m6[8][8]; Boolean lossless_qpprime = (Boolean) ((img->qp + img->bitdepth_luma_qp_scale)==0 && img->lossless_qpprime_flag==1); static int ipos; static int a[8], b[8]; if(lossless_qpprime) { for( j = joff; j < joff + 8; j++) { for( i = ioff; i < ioff + 8; i++) img->m7[j][i] = iClip1(img->max_imgpel_value, (img->m7[j][i]+(long)img->mpr[j][i])); } } else { int *m7; for( i = 0; i < 8; i++) { m7 = &img->m7[joff + i][ioff]; a[0] = m7[0] + m7[4]; a[4] = m7[0] - m7[4]; a[2] = (m7[2]>>1) - m7[6]; a[6] = m7[2] + (m7[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] = -m7[3] + m7[5] - m7[7] - (m7[7]>>1); a[3] = m7[1] + m7[7] - m7[3] - (m7[3]>>1); a[5] = -m7[1] + m7[7] + m7[5] + (m7[5]>>1); a[7] = m7[3] + m7[5] + m7[1] + (m7[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]; } for( i = 0; i < 8; i++) { ipos = ioff + i; m7 = m6[i]; a[0] = m7[0] + m7[4]; a[4] = m7[0] - m7[4]; a[2] = (m7[2]>>1) - m7[6]; a[6] = m7[2] + (m7[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] = -m7[3] + m7[5] - m7[7] - (m7[7]>>1); a[3] = m7[1] + m7[7] - m7[3] - (m7[3]>>1); a[5] = -m7[1] + m7[7] + m7[5] + (m7[5]>>1); a[7] = m7[3] + m7[5] + m7[1] + (m7[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[joff + 0][ipos] = b[0] + b[7]; img->m7[joff + 1][ipos] = b[2] + b[5]; img->m7[joff + 2][ipos] = b[4] + b[3]; img->m7[joff + 3][ipos] = b[6] + b[1]; img->m7[joff + 4][ipos] = b[6] - b[1]; img->m7[joff + 5][ipos] = b[4] - b[3]; img->m7[joff + 6][ipos] = b[2] - b[5]; img->m7[joff + 7][ipos] = b[0] - b[7]; } for( j = joff; j < joff + 8; j++) { for( i = ioff; i < ioff + 8; i++) img->m7[j][i] = iClip1(img->max_imgpel_value, rshift_rnd_sf((img->m7[j][i]+((long)img->mpr[j][i] << DQ_BITS_8)),DQ_BITS_8)); } } }