J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2003 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | |
| 27 | /* |
| 28 | * FUNCTION |
| 29 | * mlib_ImageAffine_u8_1ch_nn |
| 30 | * mlib_ImageAffine_u8_2ch_nn |
| 31 | * mlib_ImageAffine_u8_3ch_nn |
| 32 | * mlib_ImageAffine_u8_4ch_nn |
| 33 | * mlib_ImageAffine_s16_1ch_nn |
| 34 | * mlib_ImageAffine_s16_2ch_nn |
| 35 | * mlib_ImageAffine_s16_3ch_nn |
| 36 | * mlib_ImageAffine_s16_4ch_nn |
| 37 | * - image affine transformation with Nearest Neighbor filtering |
| 38 | * SYNOPSIS |
| 39 | * mlib_status mlib_ImageAffine_[u8|s16]_?ch_nn(mlib_s32 *leftEdges, |
| 40 | * mlib_s32 *rightEdges, |
| 41 | * mlib_s32 *xStarts, |
| 42 | * mlib_s32 *yStarts, |
| 43 | * mlib_s32 *sides, |
| 44 | * mlib_u8 *dstData, |
| 45 | * mlib_u8 **lineAddr, |
| 46 | * mlib_s32 dstYStride, |
| 47 | * mlib_s32 is_affine) |
| 48 | * |
| 49 | * ARGUMENTS |
| 50 | * leftEdges array[dstHeight] of xLeft coordinates |
| 51 | * RightEdges array[dstHeight] of xRight coordinates |
| 52 | * xStarts array[dstHeight] of xStart * 65536 coordinates |
| 53 | * yStarts array[dstHeight] of yStart * 65536 coordinates |
| 54 | * sides output array[4]. sides[0] is yStart, sides[1] is yFinish, |
| 55 | * sides[2] is dx * 65536, sides[3] is dy * 65536 |
| 56 | * dstData pointer to the first pixel on (yStart - 1) line |
| 57 | * lineAddr array[srcHeight] of pointers to the first pixel on |
| 58 | * the corresponding lines |
| 59 | * dstYStride stride of destination image |
| 60 | * is_affine indicator (Affine - GridWarp) |
| 61 | * |
| 62 | * DESCRIPTION |
| 63 | * The functions step along the lines from xLeft to xRight and get the |
| 64 | * nearest pixel values as being with the following coordinates |
| 65 | * ((xStart - (i - xLeft) * dx) >> 16, (yStart - (i - xLeft) * dy) >> 16) |
| 66 | * |
| 67 | */ |
| 68 | |
| 69 | #include "mlib_ImageAffine.h" |
| 70 | |
| 71 | /***************************************************************/ |
| 72 | #undef DTYPE |
| 73 | #define DTYPE mlib_u8 |
| 74 | |
| 75 | mlib_status mlib_ImageAffine_u8_1ch_nn(mlib_affine_param *param) |
| 76 | { |
| 77 | DECLAREVAR_NN(); |
| 78 | DTYPE *dstLineEnd; |
| 79 | |
| 80 | for (j = yStart; j <= yFinish; j++) { |
| 81 | DTYPE pix0; |
| 82 | |
| 83 | CLIP(1); |
| 84 | dstLineEnd = (DTYPE *) dstData + xRight; |
| 85 | |
| 86 | #ifdef __SUNPRO_C |
| 87 | #pragma pipeloop(0) |
| 88 | #endif /* __SUNPRO_C */ |
| 89 | for (; dstPixelPtr <= dstLineEnd; dstPixelPtr++) { |
| 90 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 91 | Y += dY; |
| 92 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc); |
| 93 | xSrc = X >> MLIB_SHIFT; |
| 94 | X += dX; |
| 95 | pix0 = srcPixelPtr[xSrc]; |
| 96 | dstPixelPtr[0] = pix0; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | return MLIB_SUCCESS; |
| 101 | } |
| 102 | |
| 103 | /***************************************************************/ |
| 104 | mlib_status mlib_ImageAffine_u8_2ch_nn(mlib_affine_param *param) |
| 105 | { |
| 106 | DECLAREVAR_NN(); |
| 107 | DTYPE *dstLineEnd; |
| 108 | |
| 109 | for (j = yStart; j <= yFinish; j++) { |
| 110 | DTYPE pix0, pix1; |
| 111 | |
| 112 | CLIP(2); |
| 113 | dstLineEnd = (DTYPE *) dstData + 2 * xRight; |
| 114 | |
| 115 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 116 | Y += dY; |
| 117 | xSrc = X >> MLIB_SHIFT; |
| 118 | X += dX; |
| 119 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + 2 * xSrc; |
| 120 | pix0 = srcPixelPtr[0]; |
| 121 | pix1 = srcPixelPtr[1]; |
| 122 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 123 | Y += dY; |
| 124 | xSrc = X >> MLIB_SHIFT; |
| 125 | X += dX; |
| 126 | #ifdef __SUNPRO_C |
| 127 | #pragma pipeloop(0) |
| 128 | #endif /* __SUNPRO_C */ |
| 129 | for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 2) { |
| 130 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + 2 * xSrc; |
| 131 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 132 | Y += dY; |
| 133 | xSrc = X >> MLIB_SHIFT; |
| 134 | X += dX; |
| 135 | dstPixelPtr[0] = pix0; |
| 136 | dstPixelPtr[1] = pix1; |
| 137 | pix0 = srcPixelPtr[0]; |
| 138 | pix1 = srcPixelPtr[1]; |
| 139 | } |
| 140 | |
| 141 | dstPixelPtr[0] = pix0; |
| 142 | dstPixelPtr[1] = pix1; |
| 143 | } |
| 144 | |
| 145 | return MLIB_SUCCESS; |
| 146 | } |
| 147 | |
| 148 | /***************************************************************/ |
| 149 | mlib_status mlib_ImageAffine_u8_3ch_nn(mlib_affine_param *param) |
| 150 | { |
| 151 | DECLAREVAR_NN(); |
| 152 | DTYPE *dstLineEnd; |
| 153 | |
| 154 | for (j = yStart; j <= yFinish; j++) { |
| 155 | DTYPE pix0, pix1, pix2; |
| 156 | |
| 157 | CLIP(3); |
| 158 | dstLineEnd = (DTYPE *) dstData + 3 * xRight; |
| 159 | |
| 160 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 161 | Y += dY; |
| 162 | xSrc = X >> MLIB_SHIFT; |
| 163 | X += dX; |
| 164 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + 3 * xSrc; |
| 165 | pix0 = srcPixelPtr[0]; |
| 166 | pix1 = srcPixelPtr[1]; |
| 167 | pix2 = srcPixelPtr[2]; |
| 168 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 169 | Y += dY; |
| 170 | xSrc = X >> MLIB_SHIFT; |
| 171 | X += dX; |
| 172 | #ifdef __SUNPRO_C |
| 173 | #pragma pipeloop(0) |
| 174 | #endif /* __SUNPRO_C */ |
| 175 | for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 3) { |
| 176 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + 3 * xSrc; |
| 177 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 178 | Y += dY; |
| 179 | xSrc = X >> MLIB_SHIFT; |
| 180 | X += dX; |
| 181 | dstPixelPtr[0] = pix0; |
| 182 | dstPixelPtr[1] = pix1; |
| 183 | dstPixelPtr[2] = pix2; |
| 184 | pix0 = srcPixelPtr[0]; |
| 185 | pix1 = srcPixelPtr[1]; |
| 186 | pix2 = srcPixelPtr[2]; |
| 187 | } |
| 188 | |
| 189 | dstPixelPtr[0] = pix0; |
| 190 | dstPixelPtr[1] = pix1; |
| 191 | dstPixelPtr[2] = pix2; |
| 192 | } |
| 193 | |
| 194 | return MLIB_SUCCESS; |
| 195 | } |
| 196 | |
| 197 | /***************************************************************/ |
| 198 | mlib_status mlib_ImageAffine_u8_4ch_nn(mlib_affine_param *param) |
| 199 | { |
| 200 | DECLAREVAR_NN(); |
| 201 | DTYPE *dstLineEnd; |
| 202 | |
| 203 | for (j = yStart; j <= yFinish; j++) { |
| 204 | DTYPE pix0, pix1, pix2, pix3; |
| 205 | CLIP(4); |
| 206 | dstLineEnd = (DTYPE *) dstData + 4 * xRight; |
| 207 | |
| 208 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 209 | Y += dY; |
| 210 | xSrc = X >> MLIB_SHIFT; |
| 211 | X += dX; |
| 212 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + 4 * xSrc; |
| 213 | pix0 = srcPixelPtr[0]; |
| 214 | pix1 = srcPixelPtr[1]; |
| 215 | pix2 = srcPixelPtr[2]; |
| 216 | pix3 = srcPixelPtr[3]; |
| 217 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 218 | Y += dY; |
| 219 | xSrc = X >> MLIB_SHIFT; |
| 220 | X += dX; |
| 221 | for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 4) { |
| 222 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + 4 * xSrc; |
| 223 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 224 | Y += dY; |
| 225 | xSrc = X >> MLIB_SHIFT; |
| 226 | X += dX; |
| 227 | dstPixelPtr[0] = pix0; |
| 228 | dstPixelPtr[1] = pix1; |
| 229 | dstPixelPtr[2] = pix2; |
| 230 | dstPixelPtr[3] = pix3; |
| 231 | pix0 = srcPixelPtr[0]; |
| 232 | pix1 = srcPixelPtr[1]; |
| 233 | pix2 = srcPixelPtr[2]; |
| 234 | pix3 = srcPixelPtr[3]; |
| 235 | } |
| 236 | |
| 237 | dstPixelPtr[0] = pix0; |
| 238 | dstPixelPtr[1] = pix1; |
| 239 | dstPixelPtr[2] = pix2; |
| 240 | dstPixelPtr[3] = pix3; |
| 241 | } |
| 242 | |
| 243 | return MLIB_SUCCESS; |
| 244 | } |
| 245 | |
| 246 | /***************************************************************/ |
| 247 | #undef DTYPE |
| 248 | #define DTYPE mlib_u16 |
| 249 | |
| 250 | mlib_status mlib_ImageAffine_s16_1ch_nn(mlib_affine_param *param) |
| 251 | { |
| 252 | DECLAREVAR_NN(); |
| 253 | DTYPE *dstLineEnd; |
| 254 | |
| 255 | for (j = yStart; j <= yFinish; j++) { |
| 256 | mlib_s32 pix0; |
| 257 | |
| 258 | CLIP(1); |
| 259 | dstLineEnd = (DTYPE *) dstData + xRight; |
| 260 | |
| 261 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 262 | Y += dY; |
| 263 | xSrc = X >> MLIB_SHIFT; |
| 264 | X += dX; |
| 265 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc); |
| 266 | pix0 = srcPixelPtr[xSrc]; |
| 267 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 268 | Y += dY; |
| 269 | for (; dstPixelPtr < dstLineEnd; dstPixelPtr++) { |
| 270 | xSrc = X >> MLIB_SHIFT; |
| 271 | X += dX; |
| 272 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc); |
| 273 | dstPixelPtr[0] = pix0; |
| 274 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 275 | Y += dY; |
| 276 | pix0 = srcPixelPtr[xSrc]; |
| 277 | } |
| 278 | |
| 279 | dstPixelPtr[0] = pix0; |
| 280 | } |
| 281 | |
| 282 | return MLIB_SUCCESS; |
| 283 | } |
| 284 | |
| 285 | /***************************************************************/ |
| 286 | mlib_status mlib_ImageAffine_s16_2ch_nn(mlib_affine_param *param) |
| 287 | { |
| 288 | DECLAREVAR_NN(); |
| 289 | DTYPE *dstLineEnd; |
| 290 | |
| 291 | for (j = yStart; j <= yFinish; j++) { |
| 292 | mlib_s32 pix0, pix1; |
| 293 | |
| 294 | CLIP(2); |
| 295 | dstLineEnd = (DTYPE *) dstData + 2 * xRight; |
| 296 | |
| 297 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 298 | Y += dY; |
| 299 | xSrc = X >> MLIB_SHIFT; |
| 300 | X += dX; |
| 301 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + 2 * xSrc; |
| 302 | pix0 = srcPixelPtr[0]; |
| 303 | pix1 = srcPixelPtr[1]; |
| 304 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 305 | Y += dY; |
| 306 | xSrc = X >> MLIB_SHIFT; |
| 307 | X += dX; |
| 308 | #ifdef __SUNPRO_C |
| 309 | #pragma pipeloop(0) |
| 310 | #endif /* __SUNPRO_C */ |
| 311 | for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 2) { |
| 312 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + 2 * xSrc; |
| 313 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 314 | Y += dY; |
| 315 | xSrc = X >> MLIB_SHIFT; |
| 316 | X += dX; |
| 317 | dstPixelPtr[0] = pix0; |
| 318 | dstPixelPtr[1] = pix1; |
| 319 | pix0 = srcPixelPtr[0]; |
| 320 | pix1 = srcPixelPtr[1]; |
| 321 | } |
| 322 | |
| 323 | dstPixelPtr[0] = pix0; |
| 324 | dstPixelPtr[1] = pix1; |
| 325 | } |
| 326 | |
| 327 | return MLIB_SUCCESS; |
| 328 | } |
| 329 | |
| 330 | /***************************************************************/ |
| 331 | mlib_status mlib_ImageAffine_s16_3ch_nn(mlib_affine_param *param) |
| 332 | { |
| 333 | DECLAREVAR_NN(); |
| 334 | DTYPE *dstLineEnd; |
| 335 | |
| 336 | for (j = yStart; j <= yFinish; j++) { |
| 337 | mlib_s32 pix0, pix1, pix2; |
| 338 | |
| 339 | CLIP(3); |
| 340 | dstLineEnd = (DTYPE *) dstData + 3 * xRight; |
| 341 | |
| 342 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 343 | Y += dY; |
| 344 | xSrc = X >> MLIB_SHIFT; |
| 345 | X += dX; |
| 346 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + 3 * xSrc; |
| 347 | pix0 = srcPixelPtr[0]; |
| 348 | pix1 = srcPixelPtr[1]; |
| 349 | pix2 = srcPixelPtr[2]; |
| 350 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 351 | Y += dY; |
| 352 | xSrc = X >> MLIB_SHIFT; |
| 353 | X += dX; |
| 354 | #ifdef __SUNPRO_C |
| 355 | #pragma pipeloop(0) |
| 356 | #endif /* __SUNPRO_C */ |
| 357 | for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 3) { |
| 358 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + 3 * xSrc; |
| 359 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 360 | Y += dY; |
| 361 | xSrc = X >> MLIB_SHIFT; |
| 362 | X += dX; |
| 363 | dstPixelPtr[0] = pix0; |
| 364 | dstPixelPtr[1] = pix1; |
| 365 | dstPixelPtr[2] = pix2; |
| 366 | pix0 = srcPixelPtr[0]; |
| 367 | pix1 = srcPixelPtr[1]; |
| 368 | pix2 = srcPixelPtr[2]; |
| 369 | } |
| 370 | |
| 371 | dstPixelPtr[0] = pix0; |
| 372 | dstPixelPtr[1] = pix1; |
| 373 | dstPixelPtr[2] = pix2; |
| 374 | } |
| 375 | |
| 376 | return MLIB_SUCCESS; |
| 377 | } |
| 378 | |
| 379 | /***************************************************************/ |
| 380 | mlib_status mlib_ImageAffine_s16_4ch_nn(mlib_affine_param *param) |
| 381 | { |
| 382 | DECLAREVAR_NN(); |
| 383 | DTYPE *dstLineEnd; |
| 384 | |
| 385 | for (j = yStart; j <= yFinish; j++) { |
| 386 | mlib_s32 pix0, pix1, pix2, pix3; |
| 387 | CLIP(4); |
| 388 | dstLineEnd = (DTYPE *) dstData + 4 * xRight; |
| 389 | |
| 390 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 391 | Y += dY; |
| 392 | xSrc = X >> MLIB_SHIFT; |
| 393 | X += dX; |
| 394 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + 4 * xSrc; |
| 395 | pix0 = srcPixelPtr[0]; |
| 396 | pix1 = srcPixelPtr[1]; |
| 397 | pix2 = srcPixelPtr[2]; |
| 398 | pix3 = srcPixelPtr[3]; |
| 399 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 400 | Y += dY; |
| 401 | xSrc = X >> MLIB_SHIFT; |
| 402 | X += dX; |
| 403 | for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 4) { |
| 404 | srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + 4 * xSrc; |
| 405 | ySrc = MLIB_POINTER_SHIFT(Y); |
| 406 | Y += dY; |
| 407 | xSrc = X >> MLIB_SHIFT; |
| 408 | X += dX; |
| 409 | dstPixelPtr[0] = pix0; |
| 410 | dstPixelPtr[1] = pix1; |
| 411 | dstPixelPtr[2] = pix2; |
| 412 | dstPixelPtr[3] = pix3; |
| 413 | pix0 = srcPixelPtr[0]; |
| 414 | pix1 = srcPixelPtr[1]; |
| 415 | pix2 = srcPixelPtr[2]; |
| 416 | pix3 = srcPixelPtr[3]; |
| 417 | } |
| 418 | |
| 419 | dstPixelPtr[0] = pix0; |
| 420 | dstPixelPtr[1] = pix1; |
| 421 | dstPixelPtr[2] = pix2; |
| 422 | dstPixelPtr[3] = pix3; |
| 423 | } |
| 424 | |
| 425 | return MLIB_SUCCESS; |
| 426 | } |
| 427 | |
| 428 | /***************************************************************/ |