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comparison src/filters/interp.h @ 27:b970226568d2

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brought in filters package
author Robert McIntyre <rlm@mit.edu>
date Sun, 04 Mar 2012 20:32:31 -0600
parents f9f4f1b99eed
children
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26:18eaae41bde3 27:b970226568d2
1 /*
2 * This file is part of the Advance project.
3 *
4 * Copyright (C) 2003 Andrea Mazzoleni
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 * In addition, as a special exception, Andrea Mazzoleni
21 * gives permission to link the code of this program with
22 * the MAME library (or with modified versions of MAME that use the
23 * same license as MAME), and distribute linked combinations including
24 * the two. You must obey the GNU General Public License in all
25 * respects for all of the code used other than MAME. If you modify
26 * this file, you may extend this exception to your version of the
27 * file, but you are not obligated to do so. If you do not wish to
28 * do so, delete this exception statement from your version.
29 */
30
31 #ifndef __INTERP_H
32 #define __INTERP_H
33
34 /***************************************************************************/
35 /* Basic types */
36
37 /***************************************************************************/
38 /* interpolation */
39
40 extern unsigned interp_mask[2];
41 extern unsigned interp_bits_per_pixel;
42
43 #define INTERP_16_MASK_1(v) (v & interp_mask[0])
44 #define INTERP_16_MASK_2(v) (v & interp_mask[1])
45
46 static inline u16 interp_16_521(u16 p1, u16 p2, u16 p3)
47 {
48 return INTERP_16_MASK_1((INTERP_16_MASK_1(p1)*5 + INTERP_16_MASK_1(p2)*2 + INTERP_16_MASK_1(p3)*1) / 8)
49 | INTERP_16_MASK_2((INTERP_16_MASK_2(p1)*5 + INTERP_16_MASK_2(p2)*2 + INTERP_16_MASK_2(p3)*1) / 8);
50 }
51
52 static inline u16 interp_16_332(u16 p1, u16 p2, u16 p3)
53 {
54 return INTERP_16_MASK_1((INTERP_16_MASK_1(p1)*3 + INTERP_16_MASK_1(p2)*3 + INTERP_16_MASK_1(p3)*2) / 8)
55 | INTERP_16_MASK_2((INTERP_16_MASK_2(p1)*3 + INTERP_16_MASK_2(p2)*3 + INTERP_16_MASK_2(p3)*2) / 8);
56 }
57
58 static inline u16 interp_16_611(u16 p1, u16 p2, u16 p3)
59 {
60 return INTERP_16_MASK_1((INTERP_16_MASK_1(p1)*6 + INTERP_16_MASK_1(p2) + INTERP_16_MASK_1(p3)) / 8)
61 | INTERP_16_MASK_2((INTERP_16_MASK_2(p1)*6 + INTERP_16_MASK_2(p2) + INTERP_16_MASK_2(p3)) / 8);
62 }
63
64 static inline u16 interp_16_71(u16 p1, u16 p2)
65 {
66 return INTERP_16_MASK_1((INTERP_16_MASK_1(p1)*7 + INTERP_16_MASK_1(p2)) / 8)
67 | INTERP_16_MASK_2((INTERP_16_MASK_2(p1)*7 + INTERP_16_MASK_2(p2)) / 8);
68 }
69
70 static inline u16 interp_16_211(u16 p1, u16 p2, u16 p3)
71 {
72 return INTERP_16_MASK_1((INTERP_16_MASK_1(p1)*2 + INTERP_16_MASK_1(p2) + INTERP_16_MASK_1(p3)) / 4)
73 | INTERP_16_MASK_2((INTERP_16_MASK_2(p1)*2 + INTERP_16_MASK_2(p2) + INTERP_16_MASK_2(p3)) / 4);
74 }
75
76 static inline u16 interp_16_772(u16 p1, u16 p2, u16 p3)
77 {
78 return INTERP_16_MASK_1(((INTERP_16_MASK_1(p1) + INTERP_16_MASK_1(p2))*7 + INTERP_16_MASK_1(p3)*2) / 16)
79 | INTERP_16_MASK_2(((INTERP_16_MASK_2(p1) + INTERP_16_MASK_2(p2))*7 + INTERP_16_MASK_2(p3)*2) / 16);
80 }
81
82 static inline u16 interp_16_11(u16 p1, u16 p2)
83 {
84 return INTERP_16_MASK_1((INTERP_16_MASK_1(p1) + INTERP_16_MASK_1(p2)) / 2)
85 | INTERP_16_MASK_2((INTERP_16_MASK_2(p1) + INTERP_16_MASK_2(p2)) / 2);
86 }
87
88 static inline u16 interp_16_31(u16 p1, u16 p2)
89 {
90 return INTERP_16_MASK_1((INTERP_16_MASK_1(p1)*3 + INTERP_16_MASK_1(p2)) / 4)
91 | INTERP_16_MASK_2((INTERP_16_MASK_2(p1)*3 + INTERP_16_MASK_2(p2)) / 4);
92 }
93
94 static inline u16 interp_16_1411(u16 p1, u16 p2, u16 p3)
95 {
96 return INTERP_16_MASK_1((INTERP_16_MASK_1(p1)*14 + INTERP_16_MASK_1(p2) + INTERP_16_MASK_1(p3)) / 16)
97 | INTERP_16_MASK_2((INTERP_16_MASK_2(p1)*14 + INTERP_16_MASK_2(p2) + INTERP_16_MASK_2(p3)) / 16);
98 }
99
100 static inline u16 interp_16_431(u16 p1, u16 p2, u16 p3)
101 {
102 return INTERP_16_MASK_1((INTERP_16_MASK_1(p1)*4 + INTERP_16_MASK_1(p2)*3 + INTERP_16_MASK_1(p3)) / 8)
103 | INTERP_16_MASK_2((INTERP_16_MASK_2(p1)*4 + INTERP_16_MASK_2(p2)*3 + INTERP_16_MASK_2(p3)) / 8);
104 }
105
106 static inline u16 interp_16_53(u16 p1, u16 p2)
107 {
108 return INTERP_16_MASK_1((INTERP_16_MASK_1(p1)*5 + INTERP_16_MASK_1(p2)*3) / 8)
109 | INTERP_16_MASK_2((INTERP_16_MASK_2(p1)*5 + INTERP_16_MASK_2(p2)*3) / 8);
110 }
111
112 static inline u16 interp_16_151(u16 p1, u16 p2)
113 {
114 return INTERP_16_MASK_1((INTERP_16_MASK_1(p1)*15 + INTERP_16_MASK_1(p2)) / 16)
115 | INTERP_16_MASK_2((INTERP_16_MASK_2(p1)*15 + INTERP_16_MASK_2(p2)) / 16);
116 }
117
118 static inline u16 interp_16_97(u16 p1, u16 p2)
119 {
120 return INTERP_16_MASK_1((INTERP_16_MASK_1(p1)*9 + INTERP_16_MASK_1(p2)*7) / 16)
121 | INTERP_16_MASK_2((INTERP_16_MASK_2(p1)*9 + INTERP_16_MASK_2(p2)*7) / 16);
122 }
123
124 #define INTERP_32_MASK_1(v) (v & 0xFF00FF)
125 #define INTERP_32_MASK_2(v) (v & 0x00FF00)
126
127 static inline u32 interp_32_521(u32 p1, u32 p2, u32 p3)
128 {
129 return INTERP_32_MASK_1((INTERP_32_MASK_1(p1)*5 + INTERP_32_MASK_1(p2)*2 + INTERP_32_MASK_1(p3)*1) / 8)
130 | INTERP_32_MASK_2((INTERP_32_MASK_2(p1)*5 + INTERP_32_MASK_2(p2)*2 + INTERP_32_MASK_2(p3)*1) / 8);
131 }
132
133 static inline u32 interp_32_332(u32 p1, u32 p2, u32 p3)
134 {
135 return INTERP_32_MASK_1((INTERP_32_MASK_1(p1)*3 + INTERP_32_MASK_1(p2)*3 + INTERP_32_MASK_1(p3)*2) / 8)
136 | INTERP_32_MASK_2((INTERP_32_MASK_2(p1)*3 + INTERP_32_MASK_2(p2)*3 + INTERP_32_MASK_2(p3)*2) / 8);
137 }
138
139 static inline u32 interp_32_211(u32 p1, u32 p2, u32 p3)
140 {
141 return INTERP_32_MASK_1((INTERP_32_MASK_1(p1)*2 + INTERP_32_MASK_1(p2) + INTERP_32_MASK_1(p3)) / 4)
142 | INTERP_32_MASK_2((INTERP_32_MASK_2(p1)*2 + INTERP_32_MASK_2(p2) + INTERP_32_MASK_2(p3)) / 4);
143 }
144
145 static inline u32 interp_32_611(u32 p1, u32 p2, u32 p3)
146 {
147 return INTERP_32_MASK_1((INTERP_32_MASK_1(p1)*6 + INTERP_32_MASK_1(p2) + INTERP_32_MASK_1(p3)) / 8)
148 | INTERP_32_MASK_2((INTERP_32_MASK_2(p1)*6 + INTERP_32_MASK_2(p2) + INTERP_32_MASK_2(p3)) / 8);
149 }
150
151 static inline u32 interp_32_71(u32 p1, u32 p2)
152 {
153 return INTERP_32_MASK_1((INTERP_32_MASK_1(p1)*7 + INTERP_32_MASK_1(p2)) / 8)
154 | INTERP_32_MASK_2((INTERP_32_MASK_2(p1)*7 + INTERP_32_MASK_2(p2)) / 8);
155 }
156
157 static inline u32 interp_32_772(u32 p1, u32 p2, u32 p3)
158 {
159 return INTERP_32_MASK_1(((INTERP_32_MASK_1(p1) + INTERP_32_MASK_1(p2))*7 + INTERP_32_MASK_1(p3)*2) / 16)
160 | INTERP_32_MASK_2(((INTERP_32_MASK_2(p1) + INTERP_32_MASK_2(p2))*7 + INTERP_32_MASK_2(p3)*2) / 16);
161 }
162
163 static inline u32 interp_32_11(u32 p1, u32 p2)
164 {
165 return INTERP_32_MASK_1((INTERP_32_MASK_1(p1) + INTERP_32_MASK_1(p2)) / 2)
166 | INTERP_32_MASK_2((INTERP_32_MASK_2(p1) + INTERP_32_MASK_2(p2)) / 2);
167 }
168
169 static inline u32 interp_32_31(u32 p1, u32 p2)
170 {
171 return INTERP_32_MASK_1((INTERP_32_MASK_1(p1)*3 + INTERP_32_MASK_1(p2)) / 4)
172 | INTERP_32_MASK_2((INTERP_32_MASK_2(p1)*3 + INTERP_32_MASK_2(p2)) / 4);
173 }
174
175 static inline u32 interp_32_1411(u32 p1, u32 p2, u32 p3)
176 {
177 return INTERP_32_MASK_1((INTERP_32_MASK_1(p1)*14 + INTERP_32_MASK_1(p2) + INTERP_32_MASK_1(p3)) / 16)
178 | INTERP_32_MASK_2((INTERP_32_MASK_2(p1)*14 + INTERP_32_MASK_2(p2) + INTERP_32_MASK_2(p3)) / 16);
179 }
180
181 static inline u32 interp_32_431(u32 p1, u32 p2, u32 p3)
182 {
183 return INTERP_32_MASK_1((INTERP_32_MASK_1(p1)*4 + INTERP_32_MASK_1(p2)*3 + INTERP_32_MASK_1(p3)) / 8)
184 | INTERP_32_MASK_2((INTERP_32_MASK_2(p1)*4 + INTERP_32_MASK_2(p2)*3 + INTERP_32_MASK_2(p3)) / 8);
185 }
186
187 static inline u32 interp_32_53(u32 p1, u32 p2)
188 {
189 return INTERP_32_MASK_1((INTERP_32_MASK_1(p1)*5 + INTERP_32_MASK_1(p2)*3) / 8)
190 | INTERP_32_MASK_2((INTERP_32_MASK_2(p1)*5 + INTERP_32_MASK_2(p2)*3) / 8);
191 }
192
193 static inline u32 interp_32_151(u32 p1, u32 p2)
194 {
195 return INTERP_32_MASK_1((INTERP_32_MASK_1(p1)*15 + INTERP_32_MASK_1(p2)) / 16)
196 | INTERP_32_MASK_2((INTERP_32_MASK_2(p1)*15 + INTERP_32_MASK_2(p2)) / 16);
197 }
198
199 static inline u32 interp_32_97(u32 p1, u32 p2)
200 {
201 return INTERP_32_MASK_1((INTERP_32_MASK_1(p1)*9 + INTERP_32_MASK_1(p2)*7) / 16)
202 | INTERP_32_MASK_2((INTERP_32_MASK_2(p1)*9 + INTERP_32_MASK_2(p2)*7) / 16);
203 }
204
205 /***************************************************************************/
206 /* diff */
207
208 #define INTERP_Y_LIMIT (0x30*4)
209 #define INTERP_U_LIMIT (0x07*4)
210 #define INTERP_V_LIMIT (0x06*8)
211
212 static int interp_16_diff(u16 p1, u16 p2)
213 {
214 int r, g, b;
215 int y, u, v;
216
217 if (p1 == p2)
218 return 0;
219
220 if (interp_bits_per_pixel == 16) {
221 b = (int)((p1 & 0x1F) - (p2 & 0x1F)) << 3;
222 g = (int)((p1 & 0x7E0) - (p2 & 0x7E0)) >> 3;
223 r = (int)((p1 & 0xF800) - (p2 & 0xF800)) >> 8;
224 } else {
225 b = (int)((p1 & 0x1F) - (p2 & 0x1F)) << 3;
226 g = (int)((p1 & 0x3E0) - (p2 & 0x3E0)) >> 2;
227 r = (int)((p1 & 0x7C00) - (p2 & 0x7C00)) >> 7;
228 }
229
230 y = r + g + b;
231 u = r - b;
232 v = -r + 2*g - b;
233
234 if (y < -INTERP_Y_LIMIT || y > INTERP_Y_LIMIT)
235 return 1;
236
237 if (u < -INTERP_U_LIMIT || u > INTERP_U_LIMIT)
238 return 1;
239
240 if (v < -INTERP_V_LIMIT || v > INTERP_V_LIMIT)
241 return 1;
242
243 return 0;
244 }
245
246 static int interp_32_diff(u32 p1, u32 p2)
247 {
248 int r, g, b;
249 int y, u, v;
250
251 if ((p1 & 0xF8F8F8) == (p2 & 0xF8F8F8))
252 return 0;
253
254 b = (int)((p1 & 0xFF) - (p2 & 0xFF));
255 g = (int)((p1 & 0xFF00) - (p2 & 0xFF00)) >> 8;
256 r = (int)((p1 & 0xFF0000) - (p2 & 0xFF0000)) >> 16;
257
258 y = r + g + b;
259 u = r - b;
260 v = -r + 2*g - b;
261
262 if (y < -INTERP_Y_LIMIT || y > INTERP_Y_LIMIT)
263 return 1;
264
265 if (u < -INTERP_U_LIMIT || u > INTERP_U_LIMIT)
266 return 1;
267
268 if (v < -INTERP_V_LIMIT || v > INTERP_V_LIMIT)
269 return 1;
270
271 return 0;
272 }
273
274
275 #define INTERP_LIMIT2 (96000)
276 #define ABS(x) ((x) < 0 ? -(x) : (x))
277 #define MAX(x,y) ((x) > (y) ? (x) : (y))
278 #define MIN(x,y) ((x) < (y) ? (x) : (y))
279
280 static int interp_16_diff2(u16 p1, u16 p2)
281 {
282 int r, g, b;
283 int y, u, v;
284
285 if ((p1 & 0xF79E) == (p2 & 0xF79E))
286 return 0;
287
288 if (interp_bits_per_pixel == 16) {
289 b = (int)((p1 & 0x1F) - (p2 & 0x1F)) << 3;
290 g = (int)((p1 & 0x7E0) - (p2 & 0x7E0)) >> 3;
291 r = (int)((p1 & 0xF800) - (p2 & 0xF800)) >> 8;
292 } else {
293 b = (int)((p1 & 0x1F) - (p2 & 0x1F)) << 3;
294 g = (int)((p1 & 0x3E0) - (p2 & 0x3E0)) >> 2;
295 r = (int)((p1 & 0x7C00) - (p2 & 0x7C00)) >> 7;
296 }
297
298 // yb = 30*r + 58*g + 12*b;
299 y = 33*r + 36*g + 31*b;
300 u = -14*r - 29*g + 44*b;
301 v = 62*r - 51*g - 10*b;
302
303 if (11*ABS(y) + 8*ABS(u) + 6*ABS(v) > INTERP_LIMIT2)
304 return 1;
305 return 0;
306 }
307
308 static int interp_32_diff2(u32 p1, u32 p2)
309 {
310 int r, g, b;
311 int y, u, v;
312
313 if ((p1 & 0xF0F0F0) == (p2 & 0xF0F0F0))
314 return 0;
315
316 b = (int)((p1 & 0xF8) - (p2 & 0xF8));
317 g = (int)((p1 & 0xF800) - (p2 & 0xF800)) >> 8;
318 r = (int)((p1 & 0xF80000) - (p2 & 0xF80000)) >> 16;
319
320 // y = 30*r + 58*g + 12*b;
321 y = 33*r + 36*g + 31*b;
322 u = -14*r - 29*g + 44*b;
323 v = 62*r - 51*g - 10*b;
324
325 if (11*ABS(y) + 8*ABS(u) + 6*ABS(v) > INTERP_LIMIT2)
326 return 1;
327
328 return 0;
329 }
330
331 static void interp_set(unsigned bits_per_pixel)
332 {
333 interp_bits_per_pixel = bits_per_pixel;
334
335 switch (bits_per_pixel) {
336 case 15 :
337 interp_mask[0] = 0x7C1F;
338 interp_mask[1] = 0x03E0;
339 break;
340 case 16 :
341 interp_mask[0] = 0xF81F;
342 interp_mask[1] = 0x07E0;
343 break;
344 case 32 :
345 interp_mask[0] = 0xFF00FF;
346 interp_mask[1] = 0x00FF00;
347 break;
348 }
349 }
350
351 #endif