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| 1 : | edgomez | 1.2 | /***************************************************************************** |
| 2 : | * | ||
| 3 : | * XVID MPEG-4 VIDEO CODEC | ||
| 4 : | * - Postprocessing functions - | ||
| 5 : | * | ||
| 6 : | syskin | 1.4 | * Copyright(C) 2003-2004 Michael Militzer <isibaar@xvid.org> |
| 7 : | * 2004 Marc Fauconneau | ||
| 8 : | edgomez | 1.2 | * |
| 9 : | * This program is free software ; you can redistribute it and/or modify | ||
| 10 : | * it under the terms of the GNU General Public License as published by | ||
| 11 : | * the Free Software Foundation ; either version 2 of the License, or | ||
| 12 : | * (at your option) any later version. | ||
| 13 : | * | ||
| 14 : | * This program is distributed in the hope that it will be useful, | ||
| 15 : | * but WITHOUT ANY WARRANTY ; without even the implied warranty of | ||
| 16 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 17 : | * GNU General Public License for more details. | ||
| 18 : | * | ||
| 19 : | * You should have received a copy of the GNU General Public License | ||
| 20 : | * along with this program ; if not, write to the Free Software | ||
| 21 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 22 : | * | ||
| 23 : | syskin | 1.4 | * $Id: postprocessing.c,v 1.3 2004/04/01 11:11:28 suxen_drol Exp $ |
| 24 : | edgomez | 1.2 | * |
| 25 : | ****************************************************************************/ | ||
| 26 : | |||
| 27 : | #include <stdlib.h> | ||
| 28 : | #include <string.h> | ||
| 29 : | #include <math.h> | ||
| 30 : | |||
| 31 : | #include "../portab.h" | ||
| 32 : | #include "../global.h" | ||
| 33 : | #include "image.h" | ||
| 34 : | #include "../utils/emms.h" | ||
| 35 : | #include "postprocessing.h" | ||
| 36 : | |||
| 37 : | suxen_drol | 1.3 | /* function pointers */ |
| 38 : | IMAGEBRIGHTNESS_PTR image_brightness; | ||
| 39 : | |||
| 40 : | |||
| 41 : | edgomez | 1.2 | /* Some useful (and fast) macros |
| 42 : | Note that the MIN/MAX macros assume signed shift - if your compiler | ||
| 43 : | doesn't do signed shifts, use the default MIN/MAX macros from global.h */ | ||
| 44 : | |||
| 45 : | #define FAST_MAX(x,y) ((x) - ((((x) - (y))>>(32 - 1)) & ((x) - (y)))) | ||
| 46 : | #define FAST_MIN(x,y) ((x) + ((((y) - (x))>>(32 - 1)) & ((y) - (x)))) | ||
| 47 : | #define FAST_ABS(x) ((((int)(x)) >> 31) ^ ((int)(x))) - (((int)(x)) >> 31) | ||
| 48 : | #define ABS(X) (((X)>0)?(X):-(X)) | ||
| 49 : | |||
| 50 : | void init_postproc(XVID_POSTPROC *tbls) | ||
| 51 : | { | ||
| 52 : | init_deblock(tbls); | ||
| 53 : | init_noise(tbls); | ||
| 54 : | } | ||
| 55 : | |||
| 56 : | void | ||
| 57 : | image_postproc(XVID_POSTPROC *tbls, IMAGE * img, int edged_width, | ||
| 58 : | const MACROBLOCK * mbs, int mb_width, int mb_height, int mb_stride, | ||
| 59 : | suxen_drol | 1.3 | int flags, int brightness, int frame_num, int bvop) |
| 60 : | edgomez | 1.2 | { |
| 61 : | const int edged_width2 = edged_width /2; | ||
| 62 : | int i,j; | ||
| 63 : | int quant; | ||
| 64 : | syskin | 1.4 | int dering = flags & XVID_DERINGY; |
| 65 : | edgomez | 1.2 | |
| 66 : | /* luma: j,i in block units */ | ||
| 67 : | if ((flags & XVID_DEBLOCKY)) | ||
| 68 : | { | ||
| 69 : | for (j = 1; j < mb_height*2; j++) /* horizontal deblocking */ | ||
| 70 : | for (i = 0; i < mb_width*2; i++) | ||
| 71 : | { | ||
| 72 : | quant = mbs[(j+0)/2*mb_stride + (i/2)].quant; | ||
| 73 : | syskin | 1.4 | deblock8x8_h(tbls, img->y + j*8*edged_width + i*8, edged_width, quant, dering); |
| 74 : | edgomez | 1.2 | } |
| 75 : | |||
| 76 : | for (j = 0; j < mb_height*2; j++) /* vertical deblocking */ | ||
| 77 : | for (i = 1; i < mb_width*2; i++) | ||
| 78 : | { | ||
| 79 : | quant = mbs[(j+0)/2*mb_stride + (i/2)].quant; | ||
| 80 : | syskin | 1.4 | deblock8x8_v(tbls, img->y + j*8*edged_width + i*8, edged_width, quant, dering); |
| 81 : | edgomez | 1.2 | } |
| 82 : | } | ||
| 83 : | |||
| 84 : | |||
| 85 : | /* chroma */ | ||
| 86 : | if ((flags & XVID_DEBLOCKUV)) | ||
| 87 : | { | ||
| 88 : | syskin | 1.4 | dering = flags & XVID_DERINGUV; |
| 89 : | |||
| 90 : | edgomez | 1.2 | for (j = 1; j < mb_height; j++) /* horizontal deblocking */ |
| 91 : | for (i = 0; i < mb_width; i++) | ||
| 92 : | { | ||
| 93 : | quant = mbs[(j+0)*mb_stride + i].quant; | ||
| 94 : | syskin | 1.4 | deblock8x8_h(tbls, img->u + j*8*edged_width2 + i*8, edged_width2, quant, dering); |
| 95 : | deblock8x8_h(tbls, img->v + j*8*edged_width2 + i*8, edged_width2, quant, dering); | ||
| 96 : | edgomez | 1.2 | } |
| 97 : | |||
| 98 : | for (j = 0; j < mb_height; j++) /* vertical deblocking */ | ||
| 99 : | for (i = 1; i < mb_width; i++) | ||
| 100 : | { | ||
| 101 : | quant = mbs[(j+0)*mb_stride + i].quant; | ||
| 102 : | syskin | 1.4 | deblock8x8_v(tbls, img->u + j*8*edged_width2 + i*8, edged_width2, quant, dering); |
| 103 : | deblock8x8_v(tbls, img->v + j*8*edged_width2 + i*8, edged_width2, quant, dering); | ||
| 104 : | edgomez | 1.2 | } |
| 105 : | } | ||
| 106 : | |||
| 107 : | if (!bvop) | ||
| 108 : | tbls->prev_quant = mbs->quant; | ||
| 109 : | |||
| 110 : | if ((flags & XVID_FILMEFFECT)) | ||
| 111 : | { | ||
| 112 : | add_noise(tbls, img->y, img->y, edged_width, mb_width*16, | ||
| 113 : | mb_height*16, frame_num % 3, tbls->prev_quant); | ||
| 114 : | } | ||
| 115 : | suxen_drol | 1.3 | |
| 116 : | if (brightness != 0) { | ||
| 117 : | image_brightness(img->y, edged_width, mb_width*16, mb_height*16, brightness); | ||
| 118 : | } | ||
| 119 : | edgomez | 1.2 | } |
| 120 : | |||
| 121 : | /******************************************************************************/ | ||
| 122 : | |||
| 123 : | void init_deblock(XVID_POSTPROC *tbls) | ||
| 124 : | { | ||
| 125 : | int i; | ||
| 126 : | |||
| 127 : | for(i = -255; i < 256; i++) { | ||
| 128 : | tbls->xvid_thresh_tbl[i + 255] = 0; | ||
| 129 : | if(ABS(i) < THR1) | ||
| 130 : | tbls->xvid_thresh_tbl[i + 255] = 1; | ||
| 131 : | tbls->xvid_abs_tbl[i + 255] = ABS(i); | ||
| 132 : | } | ||
| 133 : | } | ||
| 134 : | |||
| 135 : | #define LOAD_DATA_HOR(x) \ | ||
| 136 : | /* Load pixel addresses and data for filtering */ \ | ||
| 137 : | s[0] = *(v[0] = img - 5*stride + x); \ | ||
| 138 : | s[1] = *(v[1] = img - 4*stride + x); \ | ||
| 139 : | s[2] = *(v[2] = img - 3*stride + x); \ | ||
| 140 : | s[3] = *(v[3] = img - 2*stride + x); \ | ||
| 141 : | s[4] = *(v[4] = img - 1*stride + x); \ | ||
| 142 : | s[5] = *(v[5] = img + 0*stride + x); \ | ||
| 143 : | s[6] = *(v[6] = img + 1*stride + x); \ | ||
| 144 : | s[7] = *(v[7] = img + 2*stride + x); \ | ||
| 145 : | s[8] = *(v[8] = img + 3*stride + x); \ | ||
| 146 : | s[9] = *(v[9] = img + 4*stride + x); | ||
| 147 : | |||
| 148 : | #define LOAD_DATA_VER(x) \ | ||
| 149 : | /* Load pixel addresses and data for filtering */ \ | ||
| 150 : | s[0] = *(v[0] = img + x*stride - 5); \ | ||
| 151 : | s[1] = *(v[1] = img + x*stride - 4); \ | ||
| 152 : | s[2] = *(v[2] = img + x*stride - 3); \ | ||
| 153 : | s[3] = *(v[3] = img + x*stride - 2); \ | ||
| 154 : | s[4] = *(v[4] = img + x*stride - 1); \ | ||
| 155 : | s[5] = *(v[5] = img + x*stride + 0); \ | ||
| 156 : | s[6] = *(v[6] = img + x*stride + 1); \ | ||
| 157 : | s[7] = *(v[7] = img + x*stride + 2); \ | ||
| 158 : | s[8] = *(v[8] = img + x*stride + 3); \ | ||
| 159 : | s[9] = *(v[9] = img + x*stride + 4); | ||
| 160 : | |||
| 161 : | syskin | 1.4 | #define APPLY_DERING(x) \ |
| 162 : | *v[x] = (e[x] == 0) ? ( \ | ||
| 163 : | (e[x-1] == 0) ? ( \ | ||
| 164 : | (e[x+1] == 0) ? \ | ||
| 165 : | ((s[x-1]+s[x]*2+s[x+1])>>2) \ | ||
| 166 : | : ((s[x-1]+s[x])>>1) ) \ | ||
| 167 : | : ((s[x]+s[x+1])>>1) ) \ | ||
| 168 : | : s[x]; | ||
| 169 : | |||
| 170 : | edgomez | 1.2 | #define APPLY_FILTER_CORE \ |
| 171 : | /* First, decide whether to use default or DC-offset mode */ \ | ||
| 172 : | \ | ||
| 173 : | eq_cnt = 0; \ | ||
| 174 : | \ | ||
| 175 : | eq_cnt += tbls->xvid_thresh_tbl[s[0] - s[1] + 255]; \ | ||
| 176 : | eq_cnt += tbls->xvid_thresh_tbl[s[1] - s[2] + 255]; \ | ||
| 177 : | eq_cnt += tbls->xvid_thresh_tbl[s[2] - s[3] + 255]; \ | ||
| 178 : | eq_cnt += tbls->xvid_thresh_tbl[s[3] - s[4] + 255]; \ | ||
| 179 : | eq_cnt += tbls->xvid_thresh_tbl[s[4] - s[5] + 255]; \ | ||
| 180 : | eq_cnt += tbls->xvid_thresh_tbl[s[5] - s[6] + 255]; \ | ||
| 181 : | eq_cnt += tbls->xvid_thresh_tbl[s[6] - s[7] + 255]; \ | ||
| 182 : | eq_cnt += tbls->xvid_thresh_tbl[s[7] - s[8] + 255]; \ | ||
| 183 : | \ | ||
| 184 : | if(eq_cnt < THR2) { /* Default mode */ \ | ||
| 185 : | int a30, a31, a32; \ | ||
| 186 : | int diff, limit; \ | ||
| 187 : | \ | ||
| 188 : | if(tbls->xvid_abs_tbl[(s[4] - s[5]) + 255] < quant) { \ | ||
| 189 : | a30 = ((s[3]<<1) - s[4] * 5 + s[5] * 5 - (s[6]<<1)); \ | ||
| 190 : | a31 = ((s[1]<<1) - s[2] * 5 + s[3] * 5 - (s[4]<<1)); \ | ||
| 191 : | a32 = ((s[5]<<1) - s[6] * 5 + s[7] * 5 - (s[8]<<1)); \ | ||
| 192 : | \ | ||
| 193 : | diff = (5 * ((SIGN(a30) * MIN(FAST_ABS(a30), MIN(FAST_ABS(a31), FAST_ABS(a32)))) - a30) + 32) >> 6; \ | ||
| 194 : | limit = (s[4] - s[5]) / 2; \ | ||
| 195 : | \ | ||
| 196 : | if (limit > 0) \ | ||
| 197 : | diff = (diff < 0) ? 0 : ((diff > limit) ? limit : diff); \ | ||
| 198 : | else \ | ||
| 199 : | diff = (diff > 0) ? 0 : ((diff < limit) ? limit : diff); \ | ||
| 200 : | \ | ||
| 201 : | *v[4] -= diff; \ | ||
| 202 : | *v[5] += diff; \ | ||
| 203 : | } \ | ||
| 204 : | syskin | 1.4 | if (dering) { \ |
| 205 : | e[0] = (tbls->xvid_abs_tbl[(s[0] - s[1]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ | ||
| 206 : | e[1] = (tbls->xvid_abs_tbl[(s[1] - s[2]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ | ||
| 207 : | e[2] = (tbls->xvid_abs_tbl[(s[2] - s[3]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ | ||
| 208 : | e[3] = (tbls->xvid_abs_tbl[(s[3] - s[4]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ | ||
| 209 : | e[4] = (tbls->xvid_abs_tbl[(s[4] - s[5]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ | ||
| 210 : | e[5] = (tbls->xvid_abs_tbl[(s[5] - s[6]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ | ||
| 211 : | e[6] = (tbls->xvid_abs_tbl[(s[6] - s[7]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ | ||
| 212 : | e[7] = (tbls->xvid_abs_tbl[(s[7] - s[8]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ | ||
| 213 : | e[8] = (tbls->xvid_abs_tbl[(s[8] - s[9]) + 255] > quant + DERING_STRENGTH) ? 1 : 0; \ | ||
| 214 : | \ | ||
| 215 : | e[1] |= e[0]; \ | ||
| 216 : | e[2] |= e[1]; \ | ||
| 217 : | e[3] |= e[2]; \ | ||
| 218 : | e[4] |= e[3]; \ | ||
| 219 : | e[5] |= e[4]; \ | ||
| 220 : | e[6] |= e[5]; \ | ||
| 221 : | e[7] |= e[6]; \ | ||
| 222 : | e[8] |= e[7]; \ | ||
| 223 : | e[9] = e[8]; \ | ||
| 224 : | \ | ||
| 225 : | APPLY_DERING(1) \ | ||
| 226 : | APPLY_DERING(2) \ | ||
| 227 : | APPLY_DERING(3) \ | ||
| 228 : | APPLY_DERING(4) \ | ||
| 229 : | APPLY_DERING(5) \ | ||
| 230 : | APPLY_DERING(6) \ | ||
| 231 : | APPLY_DERING(7) \ | ||
| 232 : | APPLY_DERING(8) \ | ||
| 233 : | } \ | ||
| 234 : | edgomez | 1.2 | } \ |
| 235 : | else { /* DC-offset mode */ \ | ||
| 236 : | uint8_t p0, p9; \ | ||
| 237 : | int min, max; \ | ||
| 238 : | \ | ||
| 239 : | /* Now decide whether to apply smoothing filter or not */ \ | ||
| 240 : | max = FAST_MAX(s[1], FAST_MAX(s[2], FAST_MAX(s[3], FAST_MAX(s[4], FAST_MAX(s[5], FAST_MAX(s[6], FAST_MAX(s[7], s[8]))))))); \ | ||
| 241 : | min = FAST_MIN(s[1], FAST_MIN(s[2], FAST_MIN(s[3], FAST_MIN(s[4], FAST_MIN(s[5], FAST_MIN(s[6], FAST_MIN(s[7], s[8]))))))); \ | ||
| 242 : | \ | ||
| 243 : | if(((max-min)) < 2*quant) { \ | ||
| 244 : | \ | ||
| 245 : | /* Choose edge pixels */ \ | ||
| 246 : | p0 = (tbls->xvid_abs_tbl[(s[1] - s[0]) + 255] < quant) ? s[0] : s[1]; \ | ||
| 247 : | p9 = (tbls->xvid_abs_tbl[(s[8] - s[9]) + 255] < quant) ? s[9] : s[8]; \ | ||
| 248 : | \ | ||
| 249 : | *v[1] = (uint8_t) ((6*p0 + (s[1]<<2) + (s[2]<<1) + (s[3]<<1) + s[4] + s[5] + 8) >> 4); \ | ||
| 250 : | *v[2] = (uint8_t) (((p0<<2) + (s[1]<<1) + (s[2]<<2) + (s[3]<<1) + (s[4]<<1) + s[5] + s[6] + 8) >> 4); \ | ||
| 251 : | *v[3] = (uint8_t) (((p0<<1) + (s[1]<<1) + (s[2]<<1) + (s[3]<<2) + (s[4]<<1) + (s[5]<<1) + s[6] + s[7] + 8) >> 4); \ | ||
| 252 : | *v[4] = (uint8_t) ((p0 + s[1] + (s[2]<<1) + (s[3]<<1) + (s[4]<<2) + (s[5]<<1) + (s[6]<<1) + s[7] + s[8] + 8) >> 4); \ | ||
| 253 : | *v[5] = (uint8_t) ((s[1] + s[2] + (s[3]<<1) + (s[4]<<1) + (s[5]<<2) + (s[6]<<1) + (s[7]<<1) + s[8] + p9 + 8) >> 4); \ | ||
| 254 : | *v[6] = (uint8_t) ((s[2] + s[3] + (s[4]<<1) + (s[5]<<1) + (s[6]<<2) + (s[7]<<1) + (s[8]<<1) + (p9<<1) + 8) >> 4); \ | ||
| 255 : | *v[7] = (uint8_t) ((s[3] + s[4] + (s[5]<<1) + (s[6]<<1) + (s[7]<<2) + (s[8]<<1) + (p9<<2) + 8) >> 4); \ | ||
| 256 : | *v[8] = (uint8_t) ((s[4] + s[5] + (s[6]<<1) + (s[7]<<1) + (s[8]<<2) + 6*p9 + 8) >> 4); \ | ||
| 257 : | } \ | ||
| 258 : | } | ||
| 259 : | |||
| 260 : | syskin | 1.4 | void deblock8x8_h(XVID_POSTPROC *tbls, uint8_t *img, int stride, int quant, int dering) |
| 261 : | edgomez | 1.2 | { |
| 262 : | int eq_cnt; | ||
| 263 : | uint8_t *v[10]; | ||
| 264 : | syskin | 1.4 | int s[10]; |
| 265 : | int e[10]; | ||
| 266 : | edgomez | 1.2 | |
| 267 : | LOAD_DATA_HOR(0) | ||
| 268 : | APPLY_FILTER_CORE | ||
| 269 : | |||
| 270 : | LOAD_DATA_HOR(1) | ||
| 271 : | APPLY_FILTER_CORE | ||
| 272 : | |||
| 273 : | LOAD_DATA_HOR(2) | ||
| 274 : | APPLY_FILTER_CORE | ||
| 275 : | |||
| 276 : | LOAD_DATA_HOR(3) | ||
| 277 : | APPLY_FILTER_CORE | ||
| 278 : | |||
| 279 : | LOAD_DATA_HOR(4) | ||
| 280 : | APPLY_FILTER_CORE | ||
| 281 : | |||
| 282 : | LOAD_DATA_HOR(5) | ||
| 283 : | APPLY_FILTER_CORE | ||
| 284 : | |||
| 285 : | LOAD_DATA_HOR(6) | ||
| 286 : | APPLY_FILTER_CORE | ||
| 287 : | |||
| 288 : | LOAD_DATA_HOR(7) | ||
| 289 : | APPLY_FILTER_CORE | ||
| 290 : | } | ||
| 291 : | |||
| 292 : | |||
| 293 : | syskin | 1.4 | void deblock8x8_v(XVID_POSTPROC *tbls, uint8_t *img, int stride, int quant, int dering) |
| 294 : | edgomez | 1.2 | { |
| 295 : | int eq_cnt; | ||
| 296 : | uint8_t *v[10]; | ||
| 297 : | int s[10]; | ||
| 298 : | syskin | 1.4 | int e[10]; |
| 299 : | edgomez | 1.2 | |
| 300 : | LOAD_DATA_VER(0) | ||
| 301 : | APPLY_FILTER_CORE | ||
| 302 : | |||
| 303 : | LOAD_DATA_VER(1) | ||
| 304 : | APPLY_FILTER_CORE | ||
| 305 : | |||
| 306 : | LOAD_DATA_VER(2) | ||
| 307 : | APPLY_FILTER_CORE | ||
| 308 : | |||
| 309 : | LOAD_DATA_VER(3) | ||
| 310 : | APPLY_FILTER_CORE | ||
| 311 : | |||
| 312 : | LOAD_DATA_VER(4) | ||
| 313 : | APPLY_FILTER_CORE | ||
| 314 : | |||
| 315 : | LOAD_DATA_VER(5) | ||
| 316 : | APPLY_FILTER_CORE | ||
| 317 : | |||
| 318 : | LOAD_DATA_VER(6) | ||
| 319 : | APPLY_FILTER_CORE | ||
| 320 : | |||
| 321 : | LOAD_DATA_VER(7) | ||
| 322 : | APPLY_FILTER_CORE | ||
| 323 : | } | ||
| 324 : | |||
| 325 : | /****************************************************************************** | ||
| 326 : | * * | ||
| 327 : | * Noise code below taken from MPlayer: http://www.mplayerhq.hu/ * | ||
| 328 : | * Copyright (C) 2002 Michael Niedermayer <michaelni@gmx.at> * | ||
| 329 : | * * | ||
| 330 : | ******************************************************************************/ | ||
| 331 : | |||
| 332 : | #define RAND_N(range) ((int) ((double)range * rand() / (RAND_MAX + 1.0))) | ||
| 333 : | #define STRENGTH1 12 | ||
| 334 : | #define STRENGTH2 8 | ||
| 335 : | |||
| 336 : | void init_noise(XVID_POSTPROC *tbls) | ||
| 337 : | { | ||
| 338 : | int i, j; | ||
| 339 : | int patt[4] = { -1,0,1,0 }; | ||
| 340 : | |||
| 341 : | emms(); | ||
| 342 : | |||
| 343 : | srand(123457); | ||
| 344 : | |||
| 345 : | for(i = 0, j = 0; i < MAX_NOISE; i++, j++) | ||
| 346 : | { | ||
| 347 : | double x1, x2, w, y1, y2; | ||
| 348 : | |||
| 349 : | do { | ||
| 350 : | x1 = 2.0 * rand() / (float) RAND_MAX - 1.0; | ||
| 351 : | x2 = 2.0 * rand() / (float) RAND_MAX - 1.0; | ||
| 352 : | w = x1 * x1 + x2 * x2; | ||
| 353 : | } while (w >= 1.0); | ||
| 354 : | |||
| 355 : | w = sqrt((-2.0 * log(w)) / w); | ||
| 356 : | y1 = x1 * w; | ||
| 357 : | y2 = x1 * w; | ||
| 358 : | |||
| 359 : | y1 *= STRENGTH1 / sqrt(3.0); | ||
| 360 : | y2 *= STRENGTH2 / sqrt(3.0); | ||
| 361 : | |||
| 362 : | y1 /= 2; | ||
| 363 : | y2 /= 2; | ||
| 364 : | y1 += patt[j%4] * STRENGTH1 * 0.35; | ||
| 365 : | y2 += patt[j%4] * STRENGTH2 * 0.35; | ||
| 366 : | |||
| 367 : | if (y1 < -128) { | ||
| 368 : | y1=-128; | ||
| 369 : | } | ||
| 370 : | else if (y1 > 127) { | ||
| 371 : | y1= 127; | ||
| 372 : | } | ||
| 373 : | |||
| 374 : | if (y2 < -128) { | ||
| 375 : | y2=-128; | ||
| 376 : | } | ||
| 377 : | else if (y2 > 127) { | ||
| 378 : | y2= 127; | ||
| 379 : | } | ||
| 380 : | |||
| 381 : | y1 /= 3.0; | ||
| 382 : | y2 /= 3.0; | ||
| 383 : | tbls->xvid_noise1[i] = (int) y1; | ||
| 384 : | tbls->xvid_noise2[i] = (int) y2; | ||
| 385 : | |||
| 386 : | if (RAND_N(6) == 0) { | ||
| 387 : | j--; | ||
| 388 : | } | ||
| 389 : | } | ||
| 390 : | |||
| 391 : | for (i = 0; i < MAX_RES; i++) | ||
| 392 : | for (j = 0; j < 3; j++) { | ||
| 393 : | tbls->xvid_prev_shift[i][j] = tbls->xvid_noise1 + (rand() & (MAX_SHIFT - 1)); | ||
| 394 : | tbls->xvid_prev_shift[i][3 + j] = tbls->xvid_noise2 + (rand() & (MAX_SHIFT - 1)); | ||
| 395 : | } | ||
| 396 : | } | ||
| 397 : | |||
| 398 : | void add_noise(XVID_POSTPROC *tbls, uint8_t *dst, uint8_t *src, int stride, int width, int height, int shiftptr, int quant) | ||
| 399 : | { | ||
| 400 : | int x, y; | ||
| 401 : | int shift = 0; | ||
| 402 : | int add = (quant < 5) ? 3 : 0; | ||
| 403 : | int8_t *noise = (quant < 5) ? tbls->xvid_noise2 : tbls->xvid_noise1; | ||
| 404 : | |||
| 405 : | for(y = 0; y < height; y++) | ||
| 406 : | { | ||
| 407 : | int8_t *src2 = (int8_t *) src; | ||
| 408 : | |||
| 409 : | shift = rand() & (MAX_SHIFT - 1); | ||
| 410 : | |||
| 411 : | shift &= ~7; | ||
| 412 : | for(x = 0; x < width; x++) | ||
| 413 : | { | ||
| 414 : | const int n = tbls->xvid_prev_shift[y][0 + add][x] + tbls->xvid_prev_shift[y][1 + add][x] + | ||
| 415 : | tbls->xvid_prev_shift[y][2 + add][x]; | ||
| 416 : | |||
| 417 : | dst[x] = src2[x] + ((n * src2[x]) >> 7); | ||
| 418 : | } | ||
| 419 : | |||
| 420 : | tbls->xvid_prev_shift[y][shiftptr + add] = noise + shift; | ||
| 421 : | |||
| 422 : | dst += stride; | ||
| 423 : | src += stride; | ||
| 424 : | suxen_drol | 1.3 | } |
| 425 : | } | ||
| 426 : | |||
| 427 : | |||
| 428 : | void image_brightness_c(uint8_t *dst, int stride, int width, int height, int offset) | ||
| 429 : | { | ||
| 430 : | int x,y; | ||
| 431 : | |||
| 432 : | for(y = 0; y < height; y++) | ||
| 433 : | { | ||
| 434 : | for(x = 0; x < width; x++) | ||
| 435 : | { | ||
| 436 : | dst[y*stride + x] = CLIP( dst[y*stride + x] + offset, 0, 255); | ||
| 437 : | } | ||
| 438 : | edgomez | 1.2 | } |
| 439 : | } |
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