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1 : | edgomez | 1054 | /***************************************************************************** |
2 : | edgomez | 195 | * |
3 : | edgomez | 1054 | * XVID MPEG-4 VIDEO CODEC |
4 : | * - Sum Of Absolute Difference related code - | ||
5 : | edgomez | 195 | * |
6 : | edgomez | 1054 | * Copyright(C) 2001-2003 Peter Ross <pross@xvid.org> |
7 : | edgomez | 195 | * |
8 : | edgomez | 1054 | * This program is free software ; you can redistribute it and/or modify |
9 : | * it under the terms of the GNU General Public License as published by | ||
10 : | * the Free Software Foundation ; either version 2 of the License, or | ||
11 : | * (at your option) any later version. | ||
12 : | edgomez | 195 | * |
13 : | edgomez | 1054 | * This program is distributed in the hope that it will be useful, |
14 : | * but WITHOUT ANY WARRANTY ; without even the implied warranty of | ||
15 : | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
16 : | * GNU General Public License for more details. | ||
17 : | edgomez | 195 | * |
18 : | edgomez | 1054 | * You should have received a copy of the GNU General Public License |
19 : | * along with this program ; if not, write to the Free Software | ||
20 : | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
21 : | edgomez | 195 | * |
22 : | edgomez | 1124 | * $Id: sad.c,v 1.13.2.5 2003-08-22 15:20:41 edgomez Exp $ |
23 : | edgomez | 195 | * |
24 : | edgomez | 1054 | ****************************************************************************/ |
25 : | edgomez | 195 | |
26 : | #include "../portab.h" | ||
27 : | edgomez | 851 | #include "../global.h" |
28 : | edgomez | 195 | #include "sad.h" |
29 : | |||
30 : | edgomez | 982 | #include <stdlib.h> |
31 : | |||
32 : | edgomez | 195 | sad16FuncPtr sad16; |
33 : | sad8FuncPtr sad8; | ||
34 : | sad16biFuncPtr sad16bi; | ||
35 : | edgomez | 1053 | sad8biFuncPtr sad8bi; /* not really sad16, but no difference in prototype */ |
36 : | edgomez | 195 | dev16FuncPtr dev16; |
37 : | edgomez | 851 | sad16vFuncPtr sad16v; |
38 : | edgomez | 195 | |
39 : | sadInitFuncPtr sadInit; | ||
40 : | |||
41 : | |||
42 : | uint32_t | ||
43 : | sad16_c(const uint8_t * const cur, | ||
44 : | const uint8_t * const ref, | ||
45 : | const uint32_t stride, | ||
46 : | const uint32_t best_sad) | ||
47 : | { | ||
48 : | |||
49 : | uint32_t sad = 0; | ||
50 : | edgomez | 851 | uint32_t j; |
51 : | edgomez | 195 | uint8_t const *ptr_cur = cur; |
52 : | uint8_t const *ptr_ref = ref; | ||
53 : | |||
54 : | for (j = 0; j < 16; j++) { | ||
55 : | edgomez | 982 | sad += abs(ptr_cur[0] - ptr_ref[0]); |
56 : | sad += abs(ptr_cur[1] - ptr_ref[1]); | ||
57 : | sad += abs(ptr_cur[2] - ptr_ref[2]); | ||
58 : | sad += abs(ptr_cur[3] - ptr_ref[3]); | ||
59 : | sad += abs(ptr_cur[4] - ptr_ref[4]); | ||
60 : | sad += abs(ptr_cur[5] - ptr_ref[5]); | ||
61 : | sad += abs(ptr_cur[6] - ptr_ref[6]); | ||
62 : | sad += abs(ptr_cur[7] - ptr_ref[7]); | ||
63 : | sad += abs(ptr_cur[8] - ptr_ref[8]); | ||
64 : | sad += abs(ptr_cur[9] - ptr_ref[9]); | ||
65 : | sad += abs(ptr_cur[10] - ptr_ref[10]); | ||
66 : | sad += abs(ptr_cur[11] - ptr_ref[11]); | ||
67 : | sad += abs(ptr_cur[12] - ptr_ref[12]); | ||
68 : | sad += abs(ptr_cur[13] - ptr_ref[13]); | ||
69 : | sad += abs(ptr_cur[14] - ptr_ref[14]); | ||
70 : | sad += abs(ptr_cur[15] - ptr_ref[15]); | ||
71 : | edgomez | 195 | |
72 : | edgomez | 851 | if (sad >= best_sad) |
73 : | edgomez | 195 | return sad; |
74 : | |||
75 : | edgomez | 851 | ptr_cur += stride; |
76 : | ptr_ref += stride; | ||
77 : | edgomez | 195 | |
78 : | } | ||
79 : | |||
80 : | return sad; | ||
81 : | |||
82 : | } | ||
83 : | |||
84 : | uint32_t | ||
85 : | sad16bi_c(const uint8_t * const cur, | ||
86 : | const uint8_t * const ref1, | ||
87 : | const uint8_t * const ref2, | ||
88 : | const uint32_t stride) | ||
89 : | { | ||
90 : | |||
91 : | uint32_t sad = 0; | ||
92 : | uint32_t i, j; | ||
93 : | uint8_t const *ptr_cur = cur; | ||
94 : | uint8_t const *ptr_ref1 = ref1; | ||
95 : | uint8_t const *ptr_ref2 = ref2; | ||
96 : | |||
97 : | for (j = 0; j < 16; j++) { | ||
98 : | |||
99 : | for (i = 0; i < 16; i++) { | ||
100 : | int pixel = (ptr_ref1[i] + ptr_ref2[i] + 1) / 2; | ||
101 : | edgomez | 982 | sad += abs(ptr_cur[i] - pixel); |
102 : | edgomez | 195 | } |
103 : | |||
104 : | ptr_cur += stride; | ||
105 : | ptr_ref1 += stride; | ||
106 : | ptr_ref2 += stride; | ||
107 : | |||
108 : | } | ||
109 : | |||
110 : | return sad; | ||
111 : | |||
112 : | } | ||
113 : | |||
114 : | uint32_t | ||
115 : | sad8bi_c(const uint8_t * const cur, | ||
116 : | const uint8_t * const ref1, | ||
117 : | const uint8_t * const ref2, | ||
118 : | const uint32_t stride) | ||
119 : | { | ||
120 : | |||
121 : | uint32_t sad = 0; | ||
122 : | chl | 326 | uint32_t i, j; |
123 : | edgomez | 195 | uint8_t const *ptr_cur = cur; |
124 : | chl | 326 | uint8_t const *ptr_ref1 = ref1; |
125 : | uint8_t const *ptr_ref2 = ref2; | ||
126 : | |||
127 : | for (j = 0; j < 8; j++) { | ||
128 : | |||
129 : | for (i = 0; i < 8; i++) { | ||
130 : | int pixel = (ptr_ref1[i] + ptr_ref2[i] + 1) / 2; | ||
131 : | edgomez | 982 | sad += abs(ptr_cur[i] - pixel); |
132 : | chl | 326 | } |
133 : | |||
134 : | ptr_cur += stride; | ||
135 : | ptr_ref1 += stride; | ||
136 : | ptr_ref2 += stride; | ||
137 : | |||
138 : | } | ||
139 : | |||
140 : | return sad; | ||
141 : | |||
142 : | } | ||
143 : | |||
144 : | |||
145 : | |||
146 : | uint32_t | ||
147 : | sad8_c(const uint8_t * const cur, | ||
148 : | const uint8_t * const ref, | ||
149 : | const uint32_t stride) | ||
150 : | { | ||
151 : | uint32_t sad = 0; | ||
152 : | edgomez | 851 | uint32_t j; |
153 : | chl | 326 | uint8_t const *ptr_cur = cur; |
154 : | edgomez | 195 | uint8_t const *ptr_ref = ref; |
155 : | |||
156 : | for (j = 0; j < 8; j++) { | ||
157 : | |||
158 : | edgomez | 982 | sad += abs(ptr_cur[0] - ptr_ref[0]); |
159 : | sad += abs(ptr_cur[1] - ptr_ref[1]); | ||
160 : | sad += abs(ptr_cur[2] - ptr_ref[2]); | ||
161 : | sad += abs(ptr_cur[3] - ptr_ref[3]); | ||
162 : | sad += abs(ptr_cur[4] - ptr_ref[4]); | ||
163 : | sad += abs(ptr_cur[5] - ptr_ref[5]); | ||
164 : | sad += abs(ptr_cur[6] - ptr_ref[6]); | ||
165 : | sad += abs(ptr_cur[7] - ptr_ref[7]); | ||
166 : | edgomez | 851 | |
167 : | edgomez | 195 | ptr_cur += stride; |
168 : | ptr_ref += stride; | ||
169 : | |||
170 : | } | ||
171 : | |||
172 : | return sad; | ||
173 : | } | ||
174 : | |||
175 : | |||
176 : | /* average deviation from mean */ | ||
177 : | |||
178 : | uint32_t | ||
179 : | dev16_c(const uint8_t * const cur, | ||
180 : | const uint32_t stride) | ||
181 : | { | ||
182 : | |||
183 : | uint32_t mean = 0; | ||
184 : | uint32_t dev = 0; | ||
185 : | uint32_t i, j; | ||
186 : | uint8_t const *ptr_cur = cur; | ||
187 : | |||
188 : | for (j = 0; j < 16; j++) { | ||
189 : | |||
190 : | for (i = 0; i < 16; i++) | ||
191 : | mean += *(ptr_cur + i); | ||
192 : | |||
193 : | ptr_cur += stride; | ||
194 : | |||
195 : | } | ||
196 : | |||
197 : | mean /= (16 * 16); | ||
198 : | ptr_cur = cur; | ||
199 : | |||
200 : | for (j = 0; j < 16; j++) { | ||
201 : | |||
202 : | for (i = 0; i < 16; i++) | ||
203 : | edgomez | 982 | dev += abs(*(ptr_cur + i) - (int32_t) mean); |
204 : | edgomez | 195 | |
205 : | ptr_cur += stride; | ||
206 : | |||
207 : | } | ||
208 : | |||
209 : | return dev; | ||
210 : | } | ||
211 : | edgomez | 851 | |
212 : | uint32_t sad16v_c(const uint8_t * const cur, | ||
213 : | const uint8_t * const ref, | ||
214 : | const uint32_t stride, | ||
215 : | int32_t *sad) | ||
216 : | { | ||
217 : | sad[0] = sad8(cur, ref, stride); | ||
218 : | sad[1] = sad8(cur + 8, ref + 8, stride); | ||
219 : | sad[2] = sad8(cur + 8*stride, ref + 8*stride, stride); | ||
220 : | sad[3] = sad8(cur + 8*stride + 8, ref + 8*stride + 8, stride); | ||
221 : | |||
222 : | return sad[0]+sad[1]+sad[2]+sad[3]; | ||
223 : | } | ||
224 : | |||
225 : | uint32_t sad32v_c(const uint8_t * const cur, | ||
226 : | const uint8_t * const ref, | ||
227 : | const uint32_t stride, | ||
228 : | int32_t *sad) | ||
229 : | { | ||
230 : | sad[0] = sad16(cur, ref, stride, 256*4096); | ||
231 : | edgomez | 1124 | sad[1] = sad16(cur + 16, ref + 16, stride, 256*4096); |
232 : | sad[2] = sad16(cur + 16*stride, ref + 16*stride, stride, 256*4096); | ||
233 : | sad[3] = sad16(cur + 16*stride + 16, ref + 16*stride + 16, stride, 256*4096); | ||
234 : | edgomez | 851 | |
235 : | return sad[0]+sad[1]+sad[2]+sad[3]; | ||
236 : | } | ||
237 : | |||
238 : | |||
239 : | |||
240 : | #define MRSAD16_CORRFACTOR 8 | ||
241 : | uint32_t | ||
242 : | mrsad16_c(const uint8_t * const cur, | ||
243 : | const uint8_t * const ref, | ||
244 : | const uint32_t stride, | ||
245 : | const uint32_t best_sad) | ||
246 : | { | ||
247 : | |||
248 : | uint32_t sad = 0; | ||
249 : | int32_t mean = 0; | ||
250 : | uint32_t i, j; | ||
251 : | uint8_t const *ptr_cur = cur; | ||
252 : | uint8_t const *ptr_ref = ref; | ||
253 : | |||
254 : | for (j = 0; j < 16; j++) { | ||
255 : | for (i = 0; i < 16; i++) { | ||
256 : | mean += ((int) *(ptr_cur + i) - (int) *(ptr_ref + i)); | ||
257 : | } | ||
258 : | ptr_cur += stride; | ||
259 : | ptr_ref += stride; | ||
260 : | |||
261 : | } | ||
262 : | mean /= 256; | ||
263 : | |||
264 : | for (j = 0; j < 16; j++) { | ||
265 : | |||
266 : | ptr_cur -= stride; | ||
267 : | ptr_ref -= stride; | ||
268 : | |||
269 : | for (i = 0; i < 16; i++) { | ||
270 : | |||
271 : | edgomez | 982 | sad += abs(*(ptr_cur + i) - *(ptr_ref + i) - mean); |
272 : | edgomez | 851 | if (sad >= best_sad) { |
273 : | return MRSAD16_CORRFACTOR * sad; | ||
274 : | } | ||
275 : | } | ||
276 : | } | ||
277 : | |||
278 : | return MRSAD16_CORRFACTOR * sad; | ||
279 : | |||
280 : | } |
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