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| 1 : | edgomez | 195 | /************************************************************************** |
| 2 : | * | ||
| 3 : | * XVID MPEG-4 VIDEO CODEC | ||
| 4 : | * sum of absolute difference | ||
| 5 : | * | ||
| 6 : | chl | 530 | * This program is an implementation of a part of one or more MPEG-4 |
| 7 : | * Video tools as specified in ISO/IEC 14496-2 standard. Those intending | ||
| 8 : | * to use this software module in hardware or software products are | ||
| 9 : | * advised that its use may infringe existing patents or copyrights, and | ||
| 10 : | * any such use would be at such party's own risk. The original | ||
| 11 : | * developer of this software module and his/her company, and subsequent | ||
| 12 : | * editors and their companies, will have no liability for use of this | ||
| 13 : | * software or modifications or derivatives thereof. | ||
| 14 : | * | ||
| 15 : | edgomez | 195 | * This program is free software; you can redistribute it and/or modify |
| 16 : | * it under the terms of the GNU General Public License as published by | ||
| 17 : | * the Free Software Foundation; either version 2 of the License, or | ||
| 18 : | * (at your option) any later version. | ||
| 19 : | * | ||
| 20 : | * This program is distributed in the hope that it will be useful, | ||
| 21 : | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 22 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 23 : | * GNU General Public License for more details. | ||
| 24 : | * | ||
| 25 : | * You should have received a copy of the GNU General Public License | ||
| 26 : | * along with this program; if not, write to the Free Software | ||
| 27 : | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | ||
| 28 : | * | ||
| 29 : | *************************************************************************/ | ||
| 30 : | |||
| 31 : | /************************************************************************** | ||
| 32 : | * | ||
| 33 : | * History: | ||
| 34 : | * | ||
| 35 : | * 14.02.2002 added sad16bi_c() | ||
| 36 : | * 10.11.2001 initial version; (c)2001 peter ross <pross@cs.rmit.edu.au> | ||
| 37 : | * | ||
| 38 : | *************************************************************************/ | ||
| 39 : | |||
| 40 : | |||
| 41 : | #include "../portab.h" | ||
| 42 : | #include "sad.h" | ||
| 43 : | |||
| 44 : | sad16FuncPtr sad16; | ||
| 45 : | sad8FuncPtr sad8; | ||
| 46 : | sad16biFuncPtr sad16bi; | ||
| 47 : | sad8biFuncPtr sad8bi; // not really sad16, but no difference in prototype | ||
| 48 : | dev16FuncPtr dev16; | ||
| 49 : | chl | 530 | sad16vFuncPtr sad16v; |
| 50 : | edgomez | 195 | |
| 51 : | sadInitFuncPtr sadInit; | ||
| 52 : | |||
| 53 : | #define ABS(X) (((X)>0)?(X):-(X)) | ||
| 54 : | |||
| 55 : | uint32_t | ||
| 56 : | sad16_c(const uint8_t * const cur, | ||
| 57 : | const uint8_t * const ref, | ||
| 58 : | const uint32_t stride, | ||
| 59 : | const uint32_t best_sad) | ||
| 60 : | { | ||
| 61 : | |||
| 62 : | uint32_t sad = 0; | ||
| 63 : | chl | 530 | uint32_t j; |
| 64 : | edgomez | 195 | uint8_t const *ptr_cur = cur; |
| 65 : | uint8_t const *ptr_ref = ref; | ||
| 66 : | |||
| 67 : | for (j = 0; j < 16; j++) { | ||
| 68 : | chl | 530 | sad += ABS(ptr_cur[0] - ptr_ref[0]); |
| 69 : | sad += ABS(ptr_cur[1] - ptr_ref[1]); | ||
| 70 : | sad += ABS(ptr_cur[2] - ptr_ref[2]); | ||
| 71 : | sad += ABS(ptr_cur[3] - ptr_ref[3]); | ||
| 72 : | sad += ABS(ptr_cur[4] - ptr_ref[4]); | ||
| 73 : | sad += ABS(ptr_cur[5] - ptr_ref[5]); | ||
| 74 : | sad += ABS(ptr_cur[6] - ptr_ref[6]); | ||
| 75 : | sad += ABS(ptr_cur[7] - ptr_ref[7]); | ||
| 76 : | sad += ABS(ptr_cur[8] - ptr_ref[8]); | ||
| 77 : | sad += ABS(ptr_cur[9] - ptr_ref[9]); | ||
| 78 : | sad += ABS(ptr_cur[10] - ptr_ref[10]); | ||
| 79 : | sad += ABS(ptr_cur[11] - ptr_ref[11]); | ||
| 80 : | sad += ABS(ptr_cur[12] - ptr_ref[12]); | ||
| 81 : | sad += ABS(ptr_cur[13] - ptr_ref[13]); | ||
| 82 : | sad += ABS(ptr_cur[14] - ptr_ref[14]); | ||
| 83 : | sad += ABS(ptr_cur[15] - ptr_ref[15]); | ||
| 84 : | edgomez | 195 | |
| 85 : | chl | 530 | if (sad >= best_sad) |
| 86 : | edgomez | 195 | return sad; |
| 87 : | |||
| 88 : | chl | 530 | ptr_cur += stride; |
| 89 : | ptr_ref += stride; | ||
| 90 : | edgomez | 195 | |
| 91 : | } | ||
| 92 : | |||
| 93 : | return sad; | ||
| 94 : | |||
| 95 : | } | ||
| 96 : | |||
| 97 : | uint32_t | ||
| 98 : | sad16bi_c(const uint8_t * const cur, | ||
| 99 : | const uint8_t * const ref1, | ||
| 100 : | const uint8_t * const ref2, | ||
| 101 : | const uint32_t stride) | ||
| 102 : | { | ||
| 103 : | |||
| 104 : | uint32_t sad = 0; | ||
| 105 : | uint32_t i, j; | ||
| 106 : | uint8_t const *ptr_cur = cur; | ||
| 107 : | uint8_t const *ptr_ref1 = ref1; | ||
| 108 : | uint8_t const *ptr_ref2 = ref2; | ||
| 109 : | |||
| 110 : | for (j = 0; j < 16; j++) { | ||
| 111 : | |||
| 112 : | for (i = 0; i < 16; i++) { | ||
| 113 : | int pixel = (ptr_ref1[i] + ptr_ref2[i] + 1) / 2; | ||
| 114 : | |||
| 115 : | if (pixel < 0) { | ||
| 116 : | pixel = 0; | ||
| 117 : | } else if (pixel > 255) { | ||
| 118 : | pixel = 255; | ||
| 119 : | } | ||
| 120 : | |||
| 121 : | sad += ABS(ptr_cur[i] - pixel); | ||
| 122 : | } | ||
| 123 : | |||
| 124 : | ptr_cur += stride; | ||
| 125 : | ptr_ref1 += stride; | ||
| 126 : | ptr_ref2 += stride; | ||
| 127 : | |||
| 128 : | } | ||
| 129 : | |||
| 130 : | return sad; | ||
| 131 : | |||
| 132 : | } | ||
| 133 : | |||
| 134 : | uint32_t | ||
| 135 : | sad8bi_c(const uint8_t * const cur, | ||
| 136 : | const uint8_t * const ref1, | ||
| 137 : | const uint8_t * const ref2, | ||
| 138 : | const uint32_t stride) | ||
| 139 : | { | ||
| 140 : | |||
| 141 : | uint32_t sad = 0; | ||
| 142 : | chl | 326 | uint32_t i, j; |
| 143 : | edgomez | 195 | uint8_t const *ptr_cur = cur; |
| 144 : | chl | 326 | uint8_t const *ptr_ref1 = ref1; |
| 145 : | uint8_t const *ptr_ref2 = ref2; | ||
| 146 : | |||
| 147 : | for (j = 0; j < 8; j++) { | ||
| 148 : | |||
| 149 : | for (i = 0; i < 8; i++) { | ||
| 150 : | int pixel = (ptr_ref1[i] + ptr_ref2[i] + 1) / 2; | ||
| 151 : | |||
| 152 : | if (pixel < 0) { | ||
| 153 : | pixel = 0; | ||
| 154 : | } else if (pixel > 255) { | ||
| 155 : | pixel = 255; | ||
| 156 : | } | ||
| 157 : | |||
| 158 : | sad += ABS(ptr_cur[i] - pixel); | ||
| 159 : | } | ||
| 160 : | |||
| 161 : | ptr_cur += stride; | ||
| 162 : | ptr_ref1 += stride; | ||
| 163 : | ptr_ref2 += stride; | ||
| 164 : | |||
| 165 : | } | ||
| 166 : | |||
| 167 : | return sad; | ||
| 168 : | |||
| 169 : | } | ||
| 170 : | |||
| 171 : | |||
| 172 : | |||
| 173 : | uint32_t | ||
| 174 : | sad8_c(const uint8_t * const cur, | ||
| 175 : | const uint8_t * const ref, | ||
| 176 : | const uint32_t stride) | ||
| 177 : | { | ||
| 178 : | uint32_t sad = 0; | ||
| 179 : | chl | 530 | uint32_t j; |
| 180 : | chl | 326 | uint8_t const *ptr_cur = cur; |
| 181 : | edgomez | 195 | uint8_t const *ptr_ref = ref; |
| 182 : | |||
| 183 : | for (j = 0; j < 8; j++) { | ||
| 184 : | |||
| 185 : | chl | 530 | sad += ABS(ptr_cur[0] - ptr_ref[0]); |
| 186 : | sad += ABS(ptr_cur[1] - ptr_ref[1]); | ||
| 187 : | sad += ABS(ptr_cur[2] - ptr_ref[2]); | ||
| 188 : | sad += ABS(ptr_cur[3] - ptr_ref[3]); | ||
| 189 : | sad += ABS(ptr_cur[4] - ptr_ref[4]); | ||
| 190 : | sad += ABS(ptr_cur[5] - ptr_ref[5]); | ||
| 191 : | sad += ABS(ptr_cur[6] - ptr_ref[6]); | ||
| 192 : | sad += ABS(ptr_cur[7] - ptr_ref[7]); | ||
| 193 : | |||
| 194 : | edgomez | 195 | ptr_cur += stride; |
| 195 : | ptr_ref += stride; | ||
| 196 : | |||
| 197 : | } | ||
| 198 : | |||
| 199 : | return sad; | ||
| 200 : | } | ||
| 201 : | |||
| 202 : | |||
| 203 : | /* average deviation from mean */ | ||
| 204 : | |||
| 205 : | uint32_t | ||
| 206 : | dev16_c(const uint8_t * const cur, | ||
| 207 : | const uint32_t stride) | ||
| 208 : | { | ||
| 209 : | |||
| 210 : | uint32_t mean = 0; | ||
| 211 : | uint32_t dev = 0; | ||
| 212 : | uint32_t i, j; | ||
| 213 : | uint8_t const *ptr_cur = cur; | ||
| 214 : | |||
| 215 : | for (j = 0; j < 16; j++) { | ||
| 216 : | |||
| 217 : | for (i = 0; i < 16; i++) | ||
| 218 : | mean += *(ptr_cur + i); | ||
| 219 : | |||
| 220 : | ptr_cur += stride; | ||
| 221 : | |||
| 222 : | } | ||
| 223 : | |||
| 224 : | mean /= (16 * 16); | ||
| 225 : | ptr_cur = cur; | ||
| 226 : | |||
| 227 : | for (j = 0; j < 16; j++) { | ||
| 228 : | |||
| 229 : | for (i = 0; i < 16; i++) | ||
| 230 : | dev += ABS(*(ptr_cur + i) - (int32_t) mean); | ||
| 231 : | |||
| 232 : | ptr_cur += stride; | ||
| 233 : | |||
| 234 : | } | ||
| 235 : | |||
| 236 : | return dev; | ||
| 237 : | } | ||
| 238 : | chl | 530 | |
| 239 : | uint32_t sad16v_c(const uint8_t * const cur, | ||
| 240 : | const uint8_t * const ref, | ||
| 241 : | const uint32_t stride, | ||
| 242 : | int32_t *sad) | ||
| 243 : | { | ||
| 244 : | sad[0] = sad8(cur, ref, stride); | ||
| 245 : | sad[1] = sad8(cur + 8, ref + 8, stride); | ||
| 246 : | sad[2] = sad8(cur + 8*stride, ref + 8*stride, stride); | ||
| 247 : | sad[3] = sad8(cur + 8*stride + 8, ref + 8*stride + 8, stride); | ||
| 248 : | |||
| 249 : | return sad[0]+sad[1]+sad[2]+sad[3]; | ||
| 250 : | } | ||
| 251 : | |||
| 252 : | |||
| 253 : | #define MRSAD16_CORRFACTOR 8 | ||
| 254 : | uint32_t | ||
| 255 : | mrsad16_c(const uint8_t * const cur, | ||
| 256 : | const uint8_t * const ref, | ||
| 257 : | const uint32_t stride, | ||
| 258 : | const uint32_t best_sad) | ||
| 259 : | { | ||
| 260 : | |||
| 261 : | uint32_t sad = 0; | ||
| 262 : | int32_t mean = 0; | ||
| 263 : | uint32_t i, j; | ||
| 264 : | uint8_t const *ptr_cur = cur; | ||
| 265 : | uint8_t const *ptr_ref = ref; | ||
| 266 : | |||
| 267 : | for (j = 0; j < 16; j++) { | ||
| 268 : | for (i = 0; i < 16; i++) { | ||
| 269 : | mean += ((int) *(ptr_cur + i) - (int) *(ptr_ref + i)); | ||
| 270 : | } | ||
| 271 : | ptr_cur += stride; | ||
| 272 : | ptr_ref += stride; | ||
| 273 : | |||
| 274 : | } | ||
| 275 : | mean /= 256; | ||
| 276 : | |||
| 277 : | for (j = 0; j < 16; j++) { | ||
| 278 : | |||
| 279 : | ptr_cur -= stride; | ||
| 280 : | ptr_ref -= stride; | ||
| 281 : | |||
| 282 : | for (i = 0; i < 16; i++) { | ||
| 283 : | |||
| 284 : | sad += ABS(*(ptr_cur + i) - *(ptr_ref + i) - mean); | ||
| 285 : | if (sad >= best_sad) { | ||
| 286 : | return MRSAD16_CORRFACTOR * sad; | ||
| 287 : | } | ||
| 288 : | } | ||
| 289 : | } | ||
| 290 : | |||
| 291 : | return MRSAD16_CORRFACTOR * sad; | ||
| 292 : | |||
| 293 : | } | ||
| 294 : | |||
| 295 : |
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