| 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 |