1 /* ------------------------------------------------------------------ 2 * Copyright (C) 1998-2009 PacketVideo 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13 * express or implied. 14 * See the License for the specific language governing permissions 15 * and limitations under the License. 16 * ------------------------------------------------------------------- 17 */ 18 #include "mp4dec_lib.h" 19 #include "post_proc.h" 20 21 #ifdef PV_POSTPROC_ON 22 23 void Deringing_Luma( 24 uint8 *Rec_Y, 25 int width, 26 int height, 27 int16 *QP_store, 28 int, 29 uint8 *pp_mod) 30 { 31 /*---------------------------------------------------------------------------- 32 ; Define all local variables 33 ----------------------------------------------------------------------------*/ 34 int thres[4], range[4], max_range_blk, max_thres_blk; 35 int MB_V, MB_H, BLK_V, BLK_H; 36 int v_blk, h_blk; 37 int max_diff; 38 int max_blk, min_blk; 39 int v0, h0; 40 uint8 *ptr; 41 int thr, blks, incr; 42 int mb_indx, blk_indx; 43 44 /*---------------------------------------------------------------------------- 45 ; Function body here 46 ----------------------------------------------------------------------------*/ 47 incr = width - BLKSIZE; 48 49 /* Dering the first line of macro blocks */ 50 for (MB_H = 0; MB_H < width; MB_H += MBSIZE) 51 { 52 max_diff = (QP_store[(MB_H)>>4] >> 2) + 4; 53 54 /* threshold determination */ 55 max_range_blk = max_thres_blk = 0; 56 blks = 0; 57 58 for (BLK_V = 0; BLK_V < MBSIZE; BLK_V += BLKSIZE) 59 { 60 for (BLK_H = 0; BLK_H < MBSIZE; BLK_H += BLKSIZE) 61 { 62 ptr = &Rec_Y[(int32)(BLK_V) * width + MB_H + BLK_H]; 63 FindMaxMin(ptr, &min_blk, &max_blk, incr); 64 65 thres[blks] = (max_blk + min_blk + 1) >> 1; 66 range[blks] = max_blk - min_blk; 67 68 if (range[blks] >= max_range_blk) 69 { 70 max_range_blk = range[blks]; 71 max_thres_blk = thres[blks]; 72 } 73 blks++; 74 } 75 } 76 77 blks = 0; 78 for (v_blk = 0; v_blk < MBSIZE; v_blk += BLKSIZE) 79 { 80 v0 = ((v_blk - 1) >= 1) ? (v_blk - 1) : 1; 81 for (h_blk = MB_H; h_blk < MB_H + MBSIZE; h_blk += BLKSIZE) 82 { 83 h0 = ((h_blk - 1) >= 1) ? (h_blk - 1) : 1; 84 85 /* threshold rearrangement for flat region adjacent to non-flat region */ 86 if (range[blks]<32 && max_range_blk >= 64) 87 thres[blks] = max_thres_blk; 88 89 /* threshold rearrangement for deblocking 90 (blockiness annoying at DC dominant region) */ 91 if (max_range_blk >= 16) 92 { 93 /* adaptive smoothing */ 94 thr = thres[blks]; 95 96 AdaptiveSmooth_NoMMX(Rec_Y, v0, h0, v_blk, h_blk, 97 thr, width, max_diff); 98 } 99 blks++; 100 } /* block level (Luminance) */ 101 } 102 } /* macroblock level */ 103 104 105 /* Do the rest of the macro-block-lines */ 106 for (MB_V = MBSIZE; MB_V < height; MB_V += MBSIZE) 107 { 108 /* First macro-block */ 109 max_diff = (QP_store[((((int32)MB_V*width)>>4))>>4] >> 2) + 4; 110 /* threshold determination */ 111 max_range_blk = max_thres_blk = 0; 112 blks = 0; 113 for (BLK_V = 0; BLK_V < MBSIZE; BLK_V += BLKSIZE) 114 { 115 for (BLK_H = 0; BLK_H < MBSIZE; BLK_H += BLKSIZE) 116 { 117 ptr = &Rec_Y[(int32)(MB_V + BLK_V) * width + BLK_H]; 118 FindMaxMin(ptr, &min_blk, &max_blk, incr); 119 thres[blks] = (max_blk + min_blk + 1) >> 1; 120 range[blks] = max_blk - min_blk; 121 122 if (range[blks] >= max_range_blk) 123 { 124 max_range_blk = range[blks]; 125 max_thres_blk = thres[blks]; 126 } 127 blks++; 128 } 129 } 130 131 blks = 0; 132 for (v_blk = MB_V; v_blk < MB_V + MBSIZE; v_blk += BLKSIZE) 133 { 134 v0 = v_blk - 1; 135 for (h_blk = 0; h_blk < MBSIZE; h_blk += BLKSIZE) 136 { 137 h0 = ((h_blk - 1) >= 1) ? (h_blk - 1) : 1; 138 139 /* threshold rearrangement for flat region adjacent to non-flat region */ 140 if (range[blks]<32 && max_range_blk >= 64) 141 thres[blks] = max_thres_blk; 142 143 /* threshold rearrangement for deblocking 144 (blockiness annoying at DC dominant region) */ 145 if (max_range_blk >= 16) 146 { 147 /* adaptive smoothing */ 148 thr = thres[blks]; 149 150 AdaptiveSmooth_NoMMX(Rec_Y, v0, h0, v_blk, h_blk, 151 thr, width, max_diff); 152 } 153 blks++; 154 } 155 } /* block level (Luminance) */ 156 157 /* Rest of the macro-blocks */ 158 for (MB_H = MBSIZE; MB_H < width; MB_H += MBSIZE) 159 { 160 max_diff = (QP_store[((((int32)MB_V*width)>>4)+MB_H)>>4] >> 2) + 4; 161 162 /* threshold determination */ 163 max_range_blk = max_thres_blk = 0; 164 blks = 0; 165 166 mb_indx = (MB_V / 8) * (width / 8) + MB_H / 8; 167 for (BLK_V = 0; BLK_V < MBSIZE; BLK_V += BLKSIZE) 168 { 169 for (BLK_H = 0; BLK_H < MBSIZE; BLK_H += BLKSIZE) 170 { 171 blk_indx = mb_indx + (BLK_V / 8) * width / 8 + BLK_H / 8; 172 /* Update based on pp_mod only */ 173 if ((pp_mod[blk_indx]&0x4) != 0) 174 { 175 ptr = &Rec_Y[(int32)(MB_V + BLK_V) * width + MB_H + BLK_H]; 176 FindMaxMin(ptr, &min_blk, &max_blk, incr); 177 thres[blks] = (max_blk + min_blk + 1) >> 1; 178 range[blks] = max_blk - min_blk; 179 180 if (range[blks] >= max_range_blk) 181 { 182 max_range_blk = range[blks]; 183 max_thres_blk = thres[blks]; 184 } 185 } 186 blks++; 187 } 188 } 189 190 blks = 0; 191 for (v_blk = MB_V; v_blk < MB_V + MBSIZE; v_blk += BLKSIZE) 192 { 193 v0 = v_blk - 1; 194 mb_indx = (v_blk / 8) * (width / 8); 195 for (h_blk = MB_H; h_blk < MB_H + MBSIZE; h_blk += BLKSIZE) 196 { 197 h0 = h_blk - 1; 198 blk_indx = mb_indx + h_blk / 8; 199 if ((pp_mod[blk_indx]&0x4) != 0) 200 { 201 /* threshold rearrangement for flat region adjacent to non-flat region */ 202 if (range[blks]<32 && max_range_blk >= 64) 203 thres[blks] = max_thres_blk; 204 205 /* threshold rearrangement for deblocking 206 (blockiness annoying at DC dominant region) */ 207 if (max_range_blk >= 16) 208 { 209 /* adaptive smoothing */ 210 thr = thres[blks]; 211 #ifdef NoMMX 212 AdaptiveSmooth_NoMMX(Rec_Y, v0, h0, v_blk, h_blk, 213 thr, width, max_diff); 214 #else 215 DeringAdaptiveSmoothMMX(&Rec_Y[v0*width+h0], 216 width, thr, max_diff); 217 #endif 218 } 219 } 220 blks++; 221 } 222 } /* block level (Luminance) */ 223 } /* macroblock level */ 224 } /* macroblock level */ 225 226 /*---------------------------------------------------------------------------- 227 ; Return nothing or data or data pointer 228 ----------------------------------------------------------------------------*/ 229 return; 230 } 231 #endif 232
