1 /*
2 * Copyright (c) 2003, 2020, Oracle and/or its affiliates. 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26
27 /*
28 * FUNCTION
29 * mlib_ImageAffine_u16_1ch_bl
30 * mlib_ImageAffine_u16_2ch_bl
31 * mlib_ImageAffine_u16_3ch_bl
32 * mlib_ImageAffine_u16_4ch_bl
33 * - image affine transformation with Bilinear filtering
34 * SYNOPSIS
35 * mlib_status mlib_ImageAffine_u16_?ch_bl(mlib_s32 *leftEdges,
36 * mlib_s32 *rightEdges,
37 * mlib_s32 *xStarts,
38 * mlib_s32 *yStarts,
39 * mlib_s32 *sides,
40 * mlib_u8 *dstData,
41 * mlib_u8 **lineAddr,
42 * mlib_s32 dstYStride,
43 * mlib_s32 is_affine,
44 * mlib_s32 srcYStride)
45 *
46 * ARGUMENTS
47 * leftEdges array[dstHeight] of xLeft coordinates
48 * RightEdges array[dstHeight] of xRight coordinates
49 * xStarts array[dstHeight] of xStart * 65536 coordinates
50 * yStarts array[dstHeight] of yStart * 65536 coordinates
51 * sides output array[4]. sides[0] is yStart, sides[1] is yFinish,
52 * sides[2] is dx * 65536, sides[3] is dy * 65536
53 * dstData pointer to the first pixel on (yStart - 1) line
54 * lineAddr array[srcHeight] of pointers to the first pixel on
55 * the corresponding lines
56 * dstYStride stride of destination image
57 * is_affine indicator (Affine - GridWarp)
58 * srcYStride stride of source image
59 *
60 * DESCRIPTION
61 * The functions step along the lines from xLeft to xRight and apply
62 * the bilinear filtering.
63 *
64 */
65
66 #include "mlib_ImageAffine.h"
67
68 /***************************************************************/
69 #define DTYPE mlib_u16
70 #define FTYPE mlib_d64
71
72 /***************************************************************/
73 #define TTYPE mlib_s32
74 #define I2F(x) (x)
75 #define ROUND(x) (x)
76
77 #define FUN_NAME(CHAN) mlib_ImageAffine_u16_##CHAN##_bl
78
79 /***************************************************************/
80 /* for x86, using integer multiplies is faster */
81
82 /***************************************************************/
83 /* for SHORT/USHORT decrease MLIB_SHIFT due to overflow in multiplies like fdy * (a10 - a00) */
84 #undef MLIB_SHIFT
85 #define MLIB_SHIFT 15
86
87 #define MLIB_ROUND (1 << (MLIB_SHIFT - 1))
88
89 /***************************************************************/
90 #define GET_POINTERS(ind) \
91 fdx = X & MLIB_MASK; \
92 fdy = Y & MLIB_MASK; \
93 ySrc = MLIB_POINTER_SHIFT(Y); \
94 xSrc = X >> MLIB_SHIFT; \
95 srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + ind * xSrc; \
96 srcPixelPtr2 = (DTYPE *)((mlib_u8 *)srcPixelPtr + srcYStride); \
97 X += dX; \
98 Y += dY
99
100 /***************************************************************/
101 #define COUNT(ind) \
102 pix0_##ind = a00_##ind + ((fdy * (a10_##ind - a00_##ind) + MLIB_ROUND) >> MLIB_SHIFT); \
103 pix1_##ind = a01_##ind + ((fdy * (a11_##ind - a01_##ind) + MLIB_ROUND) >> MLIB_SHIFT); \
104 res##ind = pix0_##ind + ((fdx * (pix1_##ind - pix0_##ind) + MLIB_ROUND) >> MLIB_SHIFT)
105
106 /***************************************************************/
107 #define LOAD(ind, ind1, ind2) \
108 a00_##ind = srcPixelPtr[ind1]; \
109 a01_##ind = srcPixelPtr[ind2]; \
110 a10_##ind = srcPixelPtr2[ind1]; \
111 a11_##ind = srcPixelPtr2[ind2]
112
113 /***************************************************************/
114 mlib_status FUN_NAME(1ch)(mlib_affine_param *param)
115 {
116 DECLAREVAR_BL();
117 DTYPE *dstLineEnd;
118 DTYPE *srcPixelPtr2;
119
120 #if MLIB_SHIFT == 15
121 dX = (dX + 1) >> 1;
122 dY = (dY + 1) >> 1;
123 #endif
124
125 for (j = yStart; j <= yFinish; j++) {
126 mlib_s32 fdx, fdy;
127 mlib_s32 a00_0, a01_0, a10_0, a11_0;
128 mlib_s32 pix0_0, pix1_0, res0;
129
130 CLIP(1);
131 dstLineEnd = (DTYPE *) dstData + xRight;
132 #if MLIB_SHIFT == 15
133 X = X >> 1;
134 Y = Y >> 1;
135
136 if (warp_tbl != NULL) {
137 dX = (dX + 1) >> 1;
138 dY = (dY + 1) >> 1;
139 }
140
141 #endif
142
143 GET_POINTERS(1);
144 LOAD(0, 0, 1);
145
146 for (; dstPixelPtr < dstLineEnd; dstPixelPtr++) {
147 COUNT(0);
148 GET_POINTERS(1);
149 LOAD(0, 0, 1);
150 dstPixelPtr[0] = (DTYPE) res0;
151 }
152
153 COUNT(0);
154 dstPixelPtr[0] = (DTYPE) res0;
155 }
156
157 return MLIB_SUCCESS;
158 }
159
160 /***************************************************************/
161 mlib_status FUN_NAME(2ch)(mlib_affine_param *param)
162 {
163 DECLAREVAR_BL();
164 DTYPE *dstLineEnd;
165 DTYPE *srcPixelPtr2;
166
167 #if MLIB_SHIFT == 15
168 dX = (dX + 1) >> 1;
169 dY = (dY + 1) >> 1;
170 #endif
171
172 for (j = yStart; j <= yFinish; j++) {
173 mlib_s32 fdx, fdy;
174 mlib_s32 a00_0, a01_0, a10_0, a11_0;
175 mlib_s32 a00_1, a01_1, a10_1, a11_1;
176 mlib_s32 pix0_0, pix1_0, res0;
177 mlib_s32 pix0_1, pix1_1, res1;
178
179 CLIP(2);
180 dstLineEnd = (DTYPE *) dstData + 2 * xRight;
181 #if MLIB_SHIFT == 15
182 X = X >> 1;
183 Y = Y >> 1;
184
185 if (warp_tbl != NULL) {
186 dX = (dX + 1) >> 1;
187 dY = (dY + 1) >> 1;
188 }
189
190 #endif
191
192 GET_POINTERS(2);
193 LOAD(0, 0, 2);
194 LOAD(1, 1, 3);
195
196 for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 2) {
197 COUNT(0);
198 COUNT(1);
199 GET_POINTERS(2);
200 LOAD(0, 0, 2);
201 LOAD(1, 1, 3);
202 dstPixelPtr[0] = (DTYPE) res0;
203 dstPixelPtr[1] = (DTYPE) res1;
204 }
205
206 COUNT(0);
207 COUNT(1);
208 dstPixelPtr[0] = (DTYPE) res0;
209 dstPixelPtr[1] = (DTYPE) res1;
210 }
211
212 return MLIB_SUCCESS;
213 }
214
215 /***************************************************************/
216 mlib_status FUN_NAME(3ch)(mlib_affine_param *param)
217 {
218 DECLAREVAR_BL();
219 DTYPE *dstLineEnd;
220 DTYPE *srcPixelPtr2;
221
222 #if MLIB_SHIFT == 15
223 dX = (dX + 1) >> 1;
224 dY = (dY + 1) >> 1;
225 #endif
226
227 for (j = yStart; j <= yFinish; j++) {
228 mlib_s32 fdx, fdy;
229 mlib_s32 a00_0, a01_0, a10_0, a11_0;
230 mlib_s32 a00_1, a01_1, a10_1, a11_1;
231 mlib_s32 a00_2, a01_2, a10_2, a11_2;
232 mlib_s32 pix0_0, pix1_0, res0;
233 mlib_s32 pix0_1, pix1_1, res1;
234 mlib_s32 pix0_2, pix1_2, res2;
235
236 CLIP(3);
237 dstLineEnd = (DTYPE *) dstData + 3 * xRight;
238 #if MLIB_SHIFT == 15
239 X = X >> 1;
240 Y = Y >> 1;
241
242 if (warp_tbl != NULL) {
243 dX = (dX + 1) >> 1;
244 dY = (dY + 1) >> 1;
245 }
246
247 #endif
248
249 GET_POINTERS(3);
250 LOAD(0, 0, 3);
251 LOAD(1, 1, 4);
252 LOAD(2, 2, 5);
253
254 for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 3) {
255 COUNT(0);
256 COUNT(1);
257 COUNT(2);
258 GET_POINTERS(3);
259 LOAD(0, 0, 3);
260 LOAD(1, 1, 4);
261 LOAD(2, 2, 5);
262 dstPixelPtr[0] = (DTYPE) res0;
263 dstPixelPtr[1] = (DTYPE) res1;
264 dstPixelPtr[2] = (DTYPE) res2;
265 }
266
267 COUNT(0);
268 COUNT(1);
269 COUNT(2);
270 dstPixelPtr[0] = (DTYPE) res0;
271 dstPixelPtr[1] = (DTYPE) res1;
272 dstPixelPtr[2] = (DTYPE) res2;
273 }
274
275 return MLIB_SUCCESS;
276 }
277
278 /***************************************************************/
279 mlib_status FUN_NAME(4ch)(mlib_affine_param *param)
280 {
281 DECLAREVAR_BL();
282 DTYPE *dstLineEnd;
283 DTYPE *srcPixelPtr2;
284
285 #if MLIB_SHIFT == 15
286 dX = (dX + 1) >> 1;
287 dY = (dY + 1) >> 1;
288 #endif
289
290 for (j = yStart; j <= yFinish; j++) {
291 mlib_s32 fdx, fdy;
292 mlib_s32 a00_0, a01_0, a10_0, a11_0;
293 mlib_s32 a00_1, a01_1, a10_1, a11_1;
294 mlib_s32 a00_2, a01_2, a10_2, a11_2;
295 mlib_s32 a00_3, a01_3, a10_3, a11_3;
296 mlib_s32 pix0_0, pix1_0, res0;
297 mlib_s32 pix0_1, pix1_1, res1;
298 mlib_s32 pix0_2, pix1_2, res2;
299 mlib_s32 pix0_3, pix1_3, res3;
300
301 CLIP(4);
302 dstLineEnd = (DTYPE *) dstData + 4 * xRight;
303 #if MLIB_SHIFT == 15
304 X = X >> 1;
305 Y = Y >> 1;
306
307 if (warp_tbl != NULL) {
308 dX = (dX + 1) >> 1;
309 dY = (dY + 1) >> 1;
310 }
311
312 #endif
313
314 GET_POINTERS(4);
315 LOAD(0, 0, 4);
316 LOAD(1, 1, 5);
317 LOAD(2, 2, 6);
318 LOAD(3, 3, 7);
319
320 for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 4) {
321 COUNT(0);
322 COUNT(1);
323 COUNT(2);
324 COUNT(3);
325 GET_POINTERS(4);
326 LOAD(0, 0, 4);
327 LOAD(1, 1, 5);
328 LOAD(2, 2, 6);
329 LOAD(3, 3, 7);
330 dstPixelPtr[0] = (DTYPE) res0;
331 dstPixelPtr[1] = (DTYPE) res1;
332 dstPixelPtr[2] = (DTYPE) res2;
333 dstPixelPtr[3] = (DTYPE) res3;
334 }
335
336 COUNT(0);
337 COUNT(1);
338 COUNT(2);
339 COUNT(3);
340 dstPixelPtr[0] = (DTYPE) res0;
341 dstPixelPtr[1] = (DTYPE) res1;
342 dstPixelPtr[2] = (DTYPE) res2;
343 dstPixelPtr[3] = (DTYPE) res3;
344 }
345
346 return MLIB_SUCCESS;
347 }
348
349 /***************************************************************/