| 1 | /* |
| 2 | Copyright (C) 2003 Rice1964 |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU General Public License |
| 6 | as published by the Free Software Foundation; either version 2 |
| 7 | of the License, or (at your option) any later version. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 12 | GNU General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU General Public License |
| 15 | along with this program; if not, write to the Free Software |
| 16 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 17 | |
| 18 | */ |
| 19 | |
| 20 | #include "TextureFilters.h" |
| 21 | |
| 22 | |
| 23 | /************************************************************************/ |
| 24 | /* 2xSAI filters */ |
| 25 | /************************************************************************/ |
| 26 | static __inline int SAI_GetResult1_32( uint32 A, uint32 B, uint32 C, uint32 D, uint32 E ) |
| 27 | { |
| 28 | int x = 0; |
| 29 | int y = 0; |
| 30 | int r = 0; |
| 31 | |
| 32 | if (A == C) x += 1; else if (B == C) y += 1; |
| 33 | if (A == D) x += 1; else if (B == D) y += 1; |
| 34 | if (x <= 1) r += 1; |
| 35 | if (y <= 1) r -= 1; |
| 36 | |
| 37 | return r; |
| 38 | } |
| 39 | |
| 40 | static __inline uint16 SAI_GetResult1_16( uint16 A, uint16 B, uint16 C, uint16 D, uint16 E ) |
| 41 | { |
| 42 | uint16 x = 0; |
| 43 | uint16 y = 0; |
| 44 | uint16 r = 0; |
| 45 | |
| 46 | if (A == C) x += 1; else if (B == C) y += 1; |
| 47 | if (A == D) x += 1; else if (B == D) y += 1; |
| 48 | if (x <= 1) r += 1; |
| 49 | if (y <= 1 && r>0) r -= 1; |
| 50 | |
| 51 | return r; |
| 52 | } |
| 53 | |
| 54 | static __inline int SAI_GetResult2_32( uint32 A, uint32 B, uint32 C, uint32 D, uint32 E) |
| 55 | { |
| 56 | int x = 0; |
| 57 | int y = 0; |
| 58 | int r = 0; |
| 59 | |
| 60 | if (A == C) x += 1; else if (B == C) y += 1; |
| 61 | if (A == D) x += 1; else if (B == D) y += 1; |
| 62 | if (x <= 1) r -= 1; |
| 63 | if (y <= 1) r += 1; |
| 64 | |
| 65 | return r; |
| 66 | } |
| 67 | |
| 68 | static __inline uint16 SAI_GetResult2_16( uint16 A, uint16 B, uint16 C, uint16 D, uint16 E) |
| 69 | { |
| 70 | uint16 x = 0; |
| 71 | uint16 y = 0; |
| 72 | uint16 r = 0; |
| 73 | |
| 74 | if (A == C) x += 1; else if (B == C) y += 1; |
| 75 | if (A == D) x += 1; else if (B == D) y += 1; |
| 76 | if (x <= 1 && r>0 ) r -= 1; |
| 77 | if (y <= 1) r += 1; |
| 78 | |
| 79 | return r; |
| 80 | } |
| 81 | |
| 82 | |
| 83 | static __inline int SAI_GetResult_32( uint32 A, uint32 B, uint32 C, uint32 D ) |
| 84 | { |
| 85 | int x = 0; |
| 86 | int y = 0; |
| 87 | int r = 0; |
| 88 | |
| 89 | if (A == C) x += 1; else if (B == C) y += 1; |
| 90 | if (A == D) x += 1; else if (B == D) y += 1; |
| 91 | if (x <= 1) r += 1; |
| 92 | if (y <= 1) r -= 1; |
| 93 | |
| 94 | return r; |
| 95 | } |
| 96 | |
| 97 | static __inline uint16 SAI_GetResult_16( uint16 A, uint16 B, uint16 C, uint16 D ) |
| 98 | { |
| 99 | uint16 x = 0; |
| 100 | uint16 y = 0; |
| 101 | uint16 r = 0; |
| 102 | |
| 103 | if (A == C) x += 1; else if (B == C) y += 1; |
| 104 | if (A == D) x += 1; else if (B == D) y += 1; |
| 105 | if (x <= 1) r += 1; |
| 106 | if (y <= 1 && r>0 ) r -= 1; |
| 107 | |
| 108 | return r; |
| 109 | } |
| 110 | |
| 111 | |
| 112 | static __inline uint32 SAI_INTERPOLATE_32( uint32 A, uint32 B) |
| 113 | { |
| 114 | if (A != B) |
| 115 | return ((A & 0xFEFEFEFE) >> 1) + |
| 116 | (((B & 0xFEFEFEFE) >> 1) | |
| 117 | (A & B & 0x01010101)); |
| 118 | else |
| 119 | return A; |
| 120 | } |
| 121 | |
| 122 | static __inline uint16 SAI_INTERPOLATE_16( uint16 A, uint16 B) |
| 123 | { |
| 124 | if (A != B) |
| 125 | return ((A & 0xFEFE) >> 1) + |
| 126 | (((B & 0xFEFE) >> 1) | |
| 127 | (A & B & 0x0101)); |
| 128 | else |
| 129 | return A; |
| 130 | } |
| 131 | |
| 132 | |
| 133 | static __inline uint32 SAI_Q_INTERPOLATE_32( uint32 A, uint32 B, uint32 C, uint32 D) |
| 134 | { |
| 135 | uint32 x = ((A & 0xFCFCFCFC) >> 2) + |
| 136 | ((B & 0xFCFCFCFC) >> 2) + |
| 137 | ((C & 0xFCFCFCFC) >> 2) + |
| 138 | ((D & 0xFCFCFCFC) >> 2); |
| 139 | uint32 y = (((A & 0x03030303) + |
| 140 | (B & 0x03030303) + |
| 141 | (C & 0x03030303) + |
| 142 | (D & 0x03030303)) >> 2) & 0x03030303; |
| 143 | return x | y; |
| 144 | } |
| 145 | |
| 146 | static __inline uint16 SAI_Q_INTERPOLATE_16( uint16 A, uint16 B, uint16 C, uint16 D) |
| 147 | { |
| 148 | uint16 x = ((A & 0xFCFC) >> 2) + |
| 149 | ((B & 0xFCFC) >> 2) + |
| 150 | ((C & 0xFCFC) >> 2) + |
| 151 | ((D & 0xFCFC) >> 2); |
| 152 | uint16 y = (((A & 0x0303) + |
| 153 | (B & 0x0303) + |
| 154 | (C & 0x0303) + |
| 155 | (D & 0x0303)) >> 2) & 0x0303; |
| 156 | return x | y; |
| 157 | } |
| 158 | |
| 159 | |
| 160 | void Super2xSaI_32( uint32 *srcPtr, uint32 *destPtr, uint32 width, uint32 height, uint32 pitch) |
| 161 | { |
| 162 | uint32 destWidth = width << 1; |
| 163 | //uint32 destHeight = height << 1; |
| 164 | |
| 165 | uint32 color4, color5, color6; |
| 166 | uint32 color1, color2, color3; |
| 167 | uint32 colorA0, colorA1, colorA2, colorA3; |
| 168 | uint32 colorB0, colorB1, colorB2, colorB3; |
| 169 | uint32 colorS1, colorS2; |
| 170 | uint32 product1a, product1b, product2a, product2b; |
| 171 | |
| 172 | int row0, row1, row2, row3; |
| 173 | int col0, col1, col2, col3; |
| 174 | |
| 175 | for (uint16 y = 0; y < height; y++) |
| 176 | { |
| 177 | if (y > 0) |
| 178 | { |
| 179 | row0 = width; |
| 180 | row0 = -row0; |
| 181 | } |
| 182 | else |
| 183 | row0 = 0; |
| 184 | |
| 185 | row1 = 0; |
| 186 | |
| 187 | if (y < height - 1) |
| 188 | { |
| 189 | row2 = width; |
| 190 | |
| 191 | if (y < height - 2) |
| 192 | row3 = width << 1; |
| 193 | else |
| 194 | row3 = width; |
| 195 | } |
| 196 | else |
| 197 | { |
| 198 | row2 = 0; |
| 199 | row3 = 0; |
| 200 | } |
| 201 | |
| 202 | for (uint16 x = 0; x < width; x++) |
| 203 | { |
| 204 | //--------------------------------------- B0 B1 B2 B3 |
| 205 | // 4 5 6 S2 |
| 206 | // 1 2 3 S1 |
| 207 | // A0 A1 A2 A3 |
| 208 | if (x > 0) |
| 209 | col0 = -1; |
| 210 | else |
| 211 | col0 = 0; |
| 212 | |
| 213 | col1 = 0; |
| 214 | |
| 215 | if (x < width - 1) |
| 216 | { |
| 217 | col2 = 1; |
| 218 | |
| 219 | if (x < width - 2) |
| 220 | col3 = 2; |
| 221 | else |
| 222 | col3 = 1; |
| 223 | } |
| 224 | else |
| 225 | { |
| 226 | col2 = 0; |
| 227 | col3 = 0; |
| 228 | } |
| 229 | |
| 230 | colorB0 = *(srcPtr + col0 + row0); |
| 231 | colorB1 = *(srcPtr + col1 + row0); |
| 232 | colorB2 = *(srcPtr + col2 + row0); |
| 233 | colorB3 = *(srcPtr + col3 + row0); |
| 234 | |
| 235 | color4 = *(srcPtr + col0 + row1); |
| 236 | color5 = *(srcPtr + col1 + row1); |
| 237 | color6 = *(srcPtr + col2 + row1); |
| 238 | colorS2 = *(srcPtr + col3 + row1); |
| 239 | |
| 240 | color1 = *(srcPtr + col0 + row2); |
| 241 | color2 = *(srcPtr + col1 + row2); |
| 242 | color3 = *(srcPtr + col2 + row2); |
| 243 | colorS1 = *(srcPtr + col3 + row2); |
| 244 | |
| 245 | colorA0 = *(srcPtr + col0 + row3); |
| 246 | colorA1 = *(srcPtr + col1 + row3); |
| 247 | colorA2 = *(srcPtr + col2 + row3); |
| 248 | colorA3 = *(srcPtr + col3 + row3); |
| 249 | |
| 250 | //-------------------------------------- |
| 251 | if (color2 == color6 && color5 != color3) |
| 252 | product2b = product1b = color2; |
| 253 | else if (color5 == color3 && color2 != color6) |
| 254 | product2b = product1b = color5; |
| 255 | else if (color5 == color3 && color2 == color6) |
| 256 | { |
| 257 | int r = 0; |
| 258 | |
| 259 | r += SAI_GetResult_32 (color6, color5, color1, colorA1); |
| 260 | r += SAI_GetResult_32 (color6, color5, color4, colorB1); |
| 261 | r += SAI_GetResult_32 (color6, color5, colorA2, colorS1); |
| 262 | r += SAI_GetResult_32 (color6, color5, colorB2, colorS2); |
| 263 | |
| 264 | if (r > 0) |
| 265 | product2b = product1b = color6; |
| 266 | else if (r < 0) |
| 267 | product2b = product1b = color5; |
| 268 | else |
| 269 | product2b = product1b = SAI_INTERPOLATE_32 (color5, color6); |
| 270 | } |
| 271 | else |
| 272 | { |
| 273 | |
| 274 | if (color6 == color3 && color3 == colorA1 && color2 != colorA2 && color3 != colorA0) |
| 275 | product2b = SAI_Q_INTERPOLATE_32 (color3, color3, color3, color2); |
| 276 | else if (color5 == color2 && color2 == colorA2 && colorA1 != color3 && color2 != colorA3) |
| 277 | product2b = SAI_Q_INTERPOLATE_32 (color2, color2, color2, color3); |
| 278 | else |
| 279 | product2b = SAI_INTERPOLATE_32 (color2, color3); |
| 280 | |
| 281 | if (color6 == color3 && color6 == colorB1 && color5 != colorB2 && color6 != colorB0) |
| 282 | product1b = SAI_Q_INTERPOLATE_32 (color6, color6, color6, color5); |
| 283 | else if (color5 == color2 && color5 == colorB2 && colorB1 != color6 && color5 != colorB3) |
| 284 | product1b = SAI_Q_INTERPOLATE_32 (color6, color5, color5, color5); |
| 285 | else |
| 286 | product1b = SAI_INTERPOLATE_32 (color5, color6); |
| 287 | } |
| 288 | |
| 289 | if (color5 == color3 && color2 != color6 && color4 == color5 && color5 != colorA2) |
| 290 | product2a = SAI_INTERPOLATE_32 (color2, color5); |
| 291 | else if (color5 == color1 && color6 == color5 && color4 != color2 && color5 != colorA0) |
| 292 | product2a = SAI_INTERPOLATE_32(color2, color5); |
| 293 | else |
| 294 | product2a = color2; |
| 295 | |
| 296 | if (color2 == color6 && color5 != color3 && color1 == color2 && color2 != colorB2) |
| 297 | product1a = SAI_INTERPOLATE_32 (color2, color5); |
| 298 | else if (color4 == color2 && color3 == color2 && color1 != color5 && color2 != colorB0) |
| 299 | product1a = SAI_INTERPOLATE_32(color2, color5); |
| 300 | else |
| 301 | product1a = color5; |
| 302 | |
| 303 | |
| 304 | destPtr[0] = product1a; |
| 305 | destPtr[1] = product1b; |
| 306 | destPtr[destWidth] = product2a; |
| 307 | destPtr[destWidth + 1] = product2b; |
| 308 | |
| 309 | srcPtr++; |
| 310 | destPtr += 2; |
| 311 | } |
| 312 | srcPtr += (pitch-width); |
| 313 | destPtr += (((pitch-width)<<1)+(pitch<<1)); |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | |
| 318 | void Super2xSaI_16( uint16 *srcPtr, uint16 *destPtr, uint32 width, uint32 height, uint32 pitch) |
| 319 | { |
| 320 | uint32 destWidth = width << 1; |
| 321 | //uint32 destHeight = height << 1; |
| 322 | |
| 323 | uint16 color4, color5, color6; |
| 324 | uint16 color1, color2, color3; |
| 325 | uint16 colorA0, colorA1, colorA2, colorA3; |
| 326 | uint16 colorB0, colorB1, colorB2, colorB3; |
| 327 | uint16 colorS1, colorS2; |
| 328 | uint16 product1a, product1b, product2a, product2b; |
| 329 | |
| 330 | int row0, row1, row2, row3; |
| 331 | int col0, col1, col2, col3; |
| 332 | |
| 333 | for (uint16 y = 0; y < height; y++) |
| 334 | { |
| 335 | if (y > 0) |
| 336 | { |
| 337 | row0 = width; |
| 338 | row0 = -row0; |
| 339 | } |
| 340 | else |
| 341 | row0 = 0; |
| 342 | |
| 343 | row1 = 0; |
| 344 | |
| 345 | if (y < height - 1) |
| 346 | { |
| 347 | row2 = width; |
| 348 | |
| 349 | if (y < height - 2) |
| 350 | row3 = width << 1; |
| 351 | else |
| 352 | row3 = width; |
| 353 | } |
| 354 | else |
| 355 | { |
| 356 | row2 = 0; |
| 357 | row3 = 0; |
| 358 | } |
| 359 | |
| 360 | for (uint16 x = 0; x < width; x++) |
| 361 | { |
| 362 | //--------------------------------------- B0 B1 B2 B3 |
| 363 | // 4 5 6 S2 |
| 364 | // 1 2 3 S1 |
| 365 | // A0 A1 A2 A3 |
| 366 | if (x > 0) |
| 367 | col0 = -1; |
| 368 | else |
| 369 | col0 = 0; |
| 370 | |
| 371 | col1 = 0; |
| 372 | |
| 373 | if (x < width - 1) |
| 374 | { |
| 375 | col2 = 1; |
| 376 | |
| 377 | if (x < width - 2) |
| 378 | col3 = 2; |
| 379 | else |
| 380 | col3 = 1; |
| 381 | } |
| 382 | else |
| 383 | { |
| 384 | col2 = 0; |
| 385 | col3 = 0; |
| 386 | } |
| 387 | |
| 388 | colorB0 = *(srcPtr + col0 + row0); |
| 389 | colorB1 = *(srcPtr + col1 + row0); |
| 390 | colorB2 = *(srcPtr + col2 + row0); |
| 391 | colorB3 = *(srcPtr + col3 + row0); |
| 392 | |
| 393 | color4 = *(srcPtr + col0 + row1); |
| 394 | color5 = *(srcPtr + col1 + row1); |
| 395 | color6 = *(srcPtr + col2 + row1); |
| 396 | colorS2 = *(srcPtr + col3 + row1); |
| 397 | |
| 398 | color1 = *(srcPtr + col0 + row2); |
| 399 | color2 = *(srcPtr + col1 + row2); |
| 400 | color3 = *(srcPtr + col2 + row2); |
| 401 | colorS1 = *(srcPtr + col3 + row2); |
| 402 | |
| 403 | colorA0 = *(srcPtr + col0 + row3); |
| 404 | colorA1 = *(srcPtr + col1 + row3); |
| 405 | colorA2 = *(srcPtr + col2 + row3); |
| 406 | colorA3 = *(srcPtr + col3 + row3); |
| 407 | |
| 408 | //-------------------------------------- |
| 409 | if (color2 == color6 && color5 != color3) |
| 410 | product2b = product1b = color2; |
| 411 | else if (color5 == color3 && color2 != color6) |
| 412 | product2b = product1b = color5; |
| 413 | else if (color5 == color3 && color2 == color6) |
| 414 | { |
| 415 | int r = 0; |
| 416 | |
| 417 | r += SAI_GetResult_16 (color6, color5, color1, colorA1); |
| 418 | r += SAI_GetResult_16 (color6, color5, color4, colorB1); |
| 419 | r += SAI_GetResult_16 (color6, color5, colorA2, colorS1); |
| 420 | r += SAI_GetResult_16 (color6, color5, colorB2, colorS2); |
| 421 | |
| 422 | if (r > 0) |
| 423 | product2b = product1b = color6; |
| 424 | else if (r < 0) |
| 425 | product2b = product1b = color5; |
| 426 | else |
| 427 | product2b = product1b = SAI_INTERPOLATE_16 (color5, color6); |
| 428 | } |
| 429 | else |
| 430 | { |
| 431 | |
| 432 | if (color6 == color3 && color3 == colorA1 && color2 != colorA2 && color3 != colorA0) |
| 433 | product2b = SAI_Q_INTERPOLATE_16 (color3, color3, color3, color2); |
| 434 | else if (color5 == color2 && color2 == colorA2 && colorA1 != color3 && color2 != colorA3) |
| 435 | product2b = SAI_Q_INTERPOLATE_16 (color2, color2, color2, color3); |
| 436 | else |
| 437 | product2b = SAI_INTERPOLATE_16 (color2, color3); |
| 438 | |
| 439 | if (color6 == color3 && color6 == colorB1 && color5 != colorB2 && color6 != colorB0) |
| 440 | product1b = SAI_Q_INTERPOLATE_16 (color6, color6, color6, color5); |
| 441 | else if (color5 == color2 && color5 == colorB2 && colorB1 != color6 && color5 != colorB3) |
| 442 | product1b = SAI_Q_INTERPOLATE_16 (color6, color5, color5, color5); |
| 443 | else |
| 444 | product1b = SAI_INTERPOLATE_16 (color5, color6); |
| 445 | } |
| 446 | |
| 447 | if (color5 == color3 && color2 != color6 && color4 == color5 && color5 != colorA2) |
| 448 | product2a = SAI_INTERPOLATE_16 (color2, color5); |
| 449 | else if (color5 == color1 && color6 == color5 && color4 != color2 && color5 != colorA0) |
| 450 | product2a = SAI_INTERPOLATE_16(color2, color5); |
| 451 | else |
| 452 | product2a = color2; |
| 453 | |
| 454 | if (color2 == color6 && color5 != color3 && color1 == color2 && color2 != colorB2) |
| 455 | product1a = SAI_INTERPOLATE_16 (color2, color5); |
| 456 | else if (color4 == color2 && color3 == color2 && color1 != color5 && color2 != colorB0) |
| 457 | product1a = SAI_INTERPOLATE_16(color2, color5); |
| 458 | else |
| 459 | product1a = color5; |
| 460 | |
| 461 | |
| 462 | destPtr[0] = product1a; |
| 463 | destPtr[1] = product1b; |
| 464 | destPtr[destWidth] = product2a; |
| 465 | destPtr[destWidth + 1] = product2b; |
| 466 | |
| 467 | srcPtr++; |
| 468 | destPtr += 2; |
| 469 | } |
| 470 | srcPtr += (pitch-width); |
| 471 | destPtr += (((pitch-width)<<1)+(pitch<<1)); |
| 472 | } |
| 473 | } |
| 474 | |