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_s16_1ch_bl
30 * mlib_ImageAffine_s16_2ch_bl
31 * mlib_ImageAffine_s16_3ch_bl
32 * mlib_ImageAffine_s16_4ch_bl
33 * - image affine transformation with Bilinear filtering
34 * SYNOPSIS
35 * mlib_status mlib_ImageAffine_s16_?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_s16
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_s16_##CHAN##_bl
78
79 /***************************************************************/
80 /* for x86, using integer multiplies is faster */
81
82 /***************************************************************/
83 /* for SHORT/USHORT decrease MLIB_SHIFT due to
84 * overflow in multiplies like fdy * (a10 - a00)
85 */
86 #undef MLIB_SHIFT
87 #define MLIB_SHIFT 15
88
89 #define MLIB_ROUND (1 << (MLIB_SHIFT - 1))
90
91 /***************************************************************/
92 #define GET_POINTERS(ind) \
93 fdx = X & MLIB_MASK; \
94 fdy = Y & MLIB_MASK; \
95 ySrc = MLIB_POINTER_SHIFT(Y); \
96 xSrc = X >> MLIB_SHIFT; \
97 srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + ind * xSrc; \
98 srcPixelPtr2 = (DTYPE *)((mlib_u8 *)srcPixelPtr + srcYStride); \
99 X += dX; \
100 Y += dY
101
102 /***************************************************************/
103 #define COUNT(ind) \
104 pix0_##ind = a00_##ind + ((fdy * (a10_##ind - a00_##ind) + MLIB_ROUND) >> MLIB_SHIFT); \
105 pix1_##ind = a01_##ind + ((fdy * (a11_##ind - a01_##ind) + MLIB_ROUND) >> MLIB_SHIFT); \
106 res##ind = pix0_##ind + ((fdx * (pix1_##ind - pix0_##ind) + MLIB_ROUND) >> MLIB_SHIFT)
107
108 /***************************************************************/
109 #define LOAD(ind, ind1, ind2) \
110 a00_##ind = srcPixelPtr[ind1]; \
111 a01_##ind = srcPixelPtr[ind2]; \
112 a10_##ind = srcPixelPtr2[ind1]; \
113 a11_##ind = srcPixelPtr2[ind2]
114
115 /***************************************************************/
116 mlib_status FUN_NAME(1ch)(mlib_affine_param *param)
117 {
118 DECLAREVAR_BL();
119 DTYPE *dstLineEnd;
120 DTYPE *srcPixelPtr2;
121
122 #if MLIB_SHIFT == 15
123 dX = (dX + 1) >> 1;
124 dY = (dY + 1) >> 1;
125 #endif /* MLIB_SHIFT == 15 */
126
127 for (j = yStart; j <= yFinish; j++) {
128 mlib_s32 fdx, fdy;
129 mlib_s32 a00_0, a01_0, a10_0, a11_0;
130 mlib_s32 pix0_0, pix1_0, res0;
131
132 CLIP(1);
133 dstLineEnd = (DTYPE *) dstData + xRight;
134 #if MLIB_SHIFT == 15
135 X = X >> 1;
136 Y = Y >> 1;
137
138 if (warp_tbl != NULL) {
139 dX = (dX + 1) >> 1;
140 dY = (dY + 1) >> 1;
141 }
142
143 #endif /* MLIB_SHIFT == 15 */
144
145 GET_POINTERS(1);
146 LOAD(0, 0, 1);
147 for (; dstPixelPtr < dstLineEnd; dstPixelPtr++) {
148 COUNT(0);
149 GET_POINTERS(1);
150 LOAD(0, 0, 1);
151 dstPixelPtr[0] = (DTYPE) res0;
152 }
153
154 COUNT(0);
155 dstPixelPtr[0] = (DTYPE) res0;
156 }
157
158 return MLIB_SUCCESS;
159 }
160
161 /***************************************************************/
162 mlib_status FUN_NAME(2ch)(mlib_affine_param *param)
163 {
164 DECLAREVAR_BL();
165 DTYPE *dstLineEnd;
166 DTYPE *srcPixelPtr2;
167
168 #if MLIB_SHIFT == 15
169 dX = (dX + 1) >> 1;
170 dY = (dY + 1) >> 1;
171 #endif /* MLIB_SHIFT == 15 */
172
173 for (j = yStart; j <= yFinish; j++) {
174 mlib_s32 fdx, fdy;
175 mlib_s32 a00_0, a01_0, a10_0, a11_0;
176 mlib_s32 a00_1, a01_1, a10_1, a11_1;
177 mlib_s32 pix0_0, pix1_0, res0;
178 mlib_s32 pix0_1, pix1_1, res1;
179
180 CLIP(2);
181 dstLineEnd = (DTYPE *) dstData + 2 * xRight;
182 #if MLIB_SHIFT == 15
183 X = X >> 1;
184 Y = Y >> 1;
185
186 if (warp_tbl != NULL) {
187 dX = (dX + 1) >> 1;
188 dY = (dY + 1) >> 1;
189 }
190
191 #endif /* MLIB_SHIFT == 15 */
192
193 GET_POINTERS(2);
194 LOAD(0, 0, 2);
195 LOAD(1, 1, 3);
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 /* MLIB_SHIFT == 15 */
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 /* MLIB_SHIFT == 15 */
248
249 GET_POINTERS(3);
250 LOAD(0, 0, 3);
251 LOAD(1, 1, 4);
252 LOAD(2, 2, 5);
253 for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 3) {
254 COUNT(0);
255 COUNT(1);
256 COUNT(2);
257 GET_POINTERS(3);
258 LOAD(0, 0, 3);
259 LOAD(1, 1, 4);
260 LOAD(2, 2, 5);
261 dstPixelPtr[0] = (DTYPE) res0;
262 dstPixelPtr[1] = (DTYPE) res1;
263 dstPixelPtr[2] = (DTYPE) res2;
264 }
265
266 COUNT(0);
267 COUNT(1);
268 COUNT(2);
269 dstPixelPtr[0] = (DTYPE) res0;
270 dstPixelPtr[1] = (DTYPE) res1;
271 dstPixelPtr[2] = (DTYPE) res2;
272 }
273
274 return MLIB_SUCCESS;
275 }
276
277 /***************************************************************/
278 mlib_status FUN_NAME(4ch)(mlib_affine_param *param)
279 {
280 DECLAREVAR_BL();
281 DTYPE *dstLineEnd;
282 DTYPE *srcPixelPtr2;
283
284 #if MLIB_SHIFT == 15
285 dX = (dX + 1) >> 1;
286 dY = (dY + 1) >> 1;
287 #endif /* MLIB_SHIFT == 15 */
288
289 for (j = yStart; j <= yFinish; j++) {
290 mlib_s32 fdx, fdy;
291 mlib_s32 a00_0, a01_0, a10_0, a11_0;
292 mlib_s32 a00_1, a01_1, a10_1, a11_1;
293 mlib_s32 a00_2, a01_2, a10_2, a11_2;
294 mlib_s32 a00_3, a01_3, a10_3, a11_3;
295 mlib_s32 pix0_0, pix1_0, res0;
296 mlib_s32 pix0_1, pix1_1, res1;
297 mlib_s32 pix0_2, pix1_2, res2;
298 mlib_s32 pix0_3, pix1_3, res3;
299
300 CLIP(4);
301 dstLineEnd = (DTYPE *) dstData + 4 * xRight;
302 #if MLIB_SHIFT == 15
303 X = X >> 1;
304 Y = Y >> 1;
305
306 if (warp_tbl != NULL) {
307 dX = (dX + 1) >> 1;
308 dY = (dY + 1) >> 1;
309 }
310
311 #endif /* MLIB_SHIFT == 15 */
312
313 GET_POINTERS(4);
314 LOAD(0, 0, 4);
315 LOAD(1, 1, 5);
316 LOAD(2, 2, 6);
317 LOAD(3, 3, 7);
318 for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 4) {
319 COUNT(0);
320 COUNT(1);
321 COUNT(2);
322 COUNT(3);
323 GET_POINTERS(4);
324 LOAD(0, 0, 4);
325 LOAD(1, 1, 5);
326 LOAD(2, 2, 6);
327 LOAD(3, 3, 7);
328 dstPixelPtr[0] = (DTYPE) res0;
329 dstPixelPtr[1] = (DTYPE) res1;
330 dstPixelPtr[2] = (DTYPE) res2;
331 dstPixelPtr[3] = (DTYPE) res3;
332 }
333
334 COUNT(0);
335 COUNT(1);
336 COUNT(2);
337 COUNT(3);
338 dstPixelPtr[0] = (DTYPE) res0;
339 dstPixelPtr[1] = (DTYPE) res1;
340 dstPixelPtr[2] = (DTYPE) res2;
341 dstPixelPtr[3] = (DTYPE) res3;
342 }
343
344 return MLIB_SUCCESS;
345 }
346
347 /***************************************************************/