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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 | static unsigned interp_mask[2]; | |
41 | static 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 unsigned short interp_16_521(unsigned short p1, unsigned short p2, unsigned short 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 unsigned short interp_16_332(unsigned short p1, unsigned short p2, unsigned short 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 unsigned short interp_16_611(unsigned short p1, unsigned short p2, unsigned short 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 unsigned short interp_16_71(unsigned short p1, unsigned short 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 unsigned short interp_16_211(unsigned short p1, unsigned short p2, unsigned short 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 unsigned short interp_16_772(unsigned short p1, unsigned short p2, unsigned short 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 unsigned short interp_16_11(unsigned short p1, unsigned short 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 unsigned short interp_16_31(unsigned short p1, unsigned short 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 unsigned short interp_16_1411(unsigned short p1, unsigned short p2, unsigned short 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 unsigned short interp_16_431(unsigned short p1, unsigned short p2, unsigned short 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 unsigned short interp_16_53(unsigned short p1, unsigned short 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 unsigned short interp_16_151(unsigned short p1, unsigned short 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 unsigned short interp_16_97(unsigned short p1, unsigned short 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 unsigned int interp_32_521(unsigned int p1, unsigned int p2, unsigned int 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 unsigned int interp_32_332(unsigned int p1, unsigned int p2, unsigned int 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 unsigned int interp_32_211(unsigned int p1, unsigned int p2, unsigned int 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 unsigned int interp_32_611(unsigned int p1, unsigned int p2, unsigned int 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 unsigned int interp_32_71(unsigned int p1, unsigned int 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 unsigned int interp_32_772(unsigned int p1, unsigned int p2, unsigned int 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 unsigned int interp_32_11(unsigned int p1, unsigned int 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 unsigned int interp_32_31(unsigned int p1, unsigned int 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 unsigned int interp_32_1411(unsigned int p1, unsigned int p2, unsigned int 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 unsigned int interp_32_431(unsigned int p1, unsigned int p2, unsigned int 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 unsigned int interp_32_53(unsigned int p1, unsigned int 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 unsigned int interp_32_151(unsigned int p1, unsigned int 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 unsigned int interp_32_97(unsigned int p1, unsigned int 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 | inline static int interp_16_diff(unsigned short p1, unsigned short 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 | inline static int interp_32_diff(unsigned int p1, unsigned int 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 | #if 0 | |
275 | ||
276 | static void interp_set(unsigned bits_per_pixel) | |
277 | { | |
278 | interp_bits_per_pixel = bits_per_pixel; | |
279 | ||
280 | switch (bits_per_pixel) { | |
281 | case 15 : | |
282 | interp_mask[0] = 0x7C1F; | |
283 | interp_mask[1] = 0x03E0; | |
284 | break; | |
285 | case 16 : | |
286 | interp_mask[0] = 0xF81F; | |
287 | interp_mask[1] = 0x07E0; | |
288 | break; | |
289 | case 32 : | |
290 | interp_mask[0] = 0xFF00FF; | |
291 | interp_mask[1] = 0x00FF00; | |
292 | break; | |
293 | } | |
294 | } | |
295 | ||
296 | #endif | |
297 | ||
298 | #endif |