1 /*
2 * Copyright (c) 1997, 2003, 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_u8_1ch_bl
30 * mlib_ImageAffine_u8_2ch_bl
31 * mlib_ImageAffine_u8_3ch_bl
32 * mlib_ImageAffine_u8_4ch_bl
33 * - image affine transformation with Bilinear filtering
34 * SYNOPSIS
35 * mlib_status mlib_ImageAffine_u8_?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_u8
70 #define FTYPE mlib_f32
71
72 /***************************************************************/
73 #define TTYPE mlib_f32
74 #define I2F(x) mlib_U82F32[x]
75 #define ROUND(x) ((x) + 0.5f)
76
77 #define FUN_NAME(CHAN) mlib_ImageAffine_u8_##CHAN##_bl
78
79 /***************************************************************/
80 /* for x86, using integer multiplies is faster */
81
82 /* for SHORT/USHORT decrease MLIB_SHIFT due to
83 * overflow in multiplies like fdy * (a10 - a00)
84 */
85 /*
86 #undef MLIB_SHIFT
87 #define MLIB_SHIFT 15
88 */
89
90 #define MLIB_ROUND (1 << (MLIB_SHIFT - 1))
91
92 /***************************************************************/
93 #define GET_POINTERS(ind) \
94 fdx = X & MLIB_MASK; \
95 fdy = Y & MLIB_MASK; \
96 ySrc = MLIB_POINTER_SHIFT(Y); \
97 xSrc = X >> MLIB_SHIFT; \
98 srcPixelPtr = MLIB_POINTER_GET(lineAddr, ySrc) + ind * xSrc; \
99 srcPixelPtr2 = (DTYPE *)((mlib_u8 *)srcPixelPtr + srcYStride); \
100 X += dX; \
101 Y += dY
102
103 /***************************************************************/
104 #define COUNT(ind) \
105 pix0_##ind = a00_##ind + ((fdy * (a10_##ind - a00_##ind) + MLIB_ROUND) >> MLIB_SHIFT); \
106 pix1_##ind = a01_##ind + ((fdy * (a11_##ind - a01_##ind) + MLIB_ROUND) >> MLIB_SHIFT); \
107 res##ind = pix0_##ind + ((fdx * (pix1_##ind - pix0_##ind) + MLIB_ROUND) >> MLIB_SHIFT)
108
109 /***************************************************************/
110 #define LOAD(ind, ind1, ind2) \
111 a00_##ind = srcPixelPtr[ind1]; \
112 a01_##ind = srcPixelPtr[ind2]; \
113 a10_##ind = srcPixelPtr2[ind1]; \
114 a11_##ind = srcPixelPtr2[ind2]
115
116 /***************************************************************/
117 mlib_status FUN_NAME(1ch)(mlib_affine_param *param)
118 {
119 DECLAREVAR_BL();
120 DTYPE *dstLineEnd;
121 DTYPE *srcPixelPtr2;
122
123 #if MLIB_SHIFT == 15
124 dX = (dX + 1) >> 1;
125 dY = (dY + 1) >> 1;
126 #endif /* MLIB_SHIFT == 15 */
127
128 for (j = yStart; j <= yFinish; j++) {
129 mlib_s32 fdx, fdy;
130 mlib_s32 a00_0, a01_0, a10_0, a11_0;
131 mlib_s32 pix0_0, pix1_0, res0;
132
133 CLIP(1);
134 dstLineEnd = (DTYPE *) dstData + xRight;
135 #if MLIB_SHIFT == 15
136 X = X >> 1;
137 Y = Y >> 1;
138 #endif /* MLIB_SHIFT == 15 */
139
140 GET_POINTERS(1);
141 LOAD(0, 0, 1);
142
143 #ifdef __SUNPRO_C
144 #pragma pipeloop(0)
145 #endif /* __SUNPRO_C */
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 /* MLIB_SHIFT == 15 */
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 #endif /* MLIB_SHIFT == 15 */
185
186 GET_POINTERS(2);
187 LOAD(0, 0, 2);
188 LOAD(1, 1, 3);
189
190 #ifdef __SUNPRO_C
191 #pragma pipeloop(0)
192 #endif /* __SUNPRO_C */
193 for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 2) {
194 COUNT(0);
195 COUNT(1);
196 GET_POINTERS(2);
197 LOAD(0, 0, 2);
198 LOAD(1, 1, 3);
199 dstPixelPtr[0] = (DTYPE) res0;
200 dstPixelPtr[1] = (DTYPE) res1;
201 }
202
203 COUNT(0);
204 COUNT(1);
205 dstPixelPtr[0] = (DTYPE) res0;
206 dstPixelPtr[1] = (DTYPE) res1;
207 }
208
209 return MLIB_SUCCESS;
210 }
211
212 /***************************************************************/
213 mlib_status FUN_NAME(3ch)(mlib_affine_param *param)
214 {
215 DECLAREVAR_BL();
216 DTYPE *dstLineEnd;
217 DTYPE *srcPixelPtr2;
218
219 #if MLIB_SHIFT == 15
220 dX = (dX + 1) >> 1;
221 dY = (dY + 1) >> 1;
222 #endif /* MLIB_SHIFT == 15 */
223
224 for (j = yStart; j <= yFinish; j++) {
225 mlib_s32 fdx, fdy;
226 mlib_s32 a00_0, a01_0, a10_0, a11_0;
227 mlib_s32 a00_1, a01_1, a10_1, a11_1;
228 mlib_s32 a00_2, a01_2, a10_2, a11_2;
229 mlib_s32 pix0_0, pix1_0, res0;
230 mlib_s32 pix0_1, pix1_1, res1;
231 mlib_s32 pix0_2, pix1_2, res2;
232
233 CLIP(3);
234 dstLineEnd = (DTYPE *) dstData + 3 * xRight;
235 #if MLIB_SHIFT == 15
236 X = X >> 1;
237 Y = Y >> 1;
238 #endif /* MLIB_SHIFT == 15 */
239
240 GET_POINTERS(3);
241 LOAD(0, 0, 3);
242 LOAD(1, 1, 4);
243 LOAD(2, 2, 5);
244
245 #ifdef __SUNPRO_C
246 #pragma pipeloop(0)
247 #endif /* __SUNPRO_C */
248 for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 3) {
249 COUNT(0);
250 COUNT(1);
251 COUNT(2);
252 GET_POINTERS(3);
253 LOAD(0, 0, 3);
254 LOAD(1, 1, 4);
255 LOAD(2, 2, 5);
256 dstPixelPtr[0] = (DTYPE) res0;
257 dstPixelPtr[1] = (DTYPE) res1;
258 dstPixelPtr[2] = (DTYPE) res2;
259 }
260
261 COUNT(0);
262 COUNT(1);
263 COUNT(2);
264 dstPixelPtr[0] = (DTYPE) res0;
265 dstPixelPtr[1] = (DTYPE) res1;
266 dstPixelPtr[2] = (DTYPE) res2;
267 }
268
269 return MLIB_SUCCESS;
270 }
271
272 /***************************************************************/
273 mlib_status FUN_NAME(4ch)(mlib_affine_param *param)
274 {
275 DECLAREVAR_BL();
276 DTYPE *dstLineEnd;
277 DTYPE *srcPixelPtr2;
278
279 #if MLIB_SHIFT == 15
280 dX = (dX + 1) >> 1;
281 dY = (dY + 1) >> 1;
282 #endif /* MLIB_SHIFT == 15 */
283
284 for (j = yStart; j <= yFinish; j++) {
285 mlib_s32 fdx, fdy;
286 mlib_s32 a00_0, a01_0, a10_0, a11_0;
287 mlib_s32 a00_1, a01_1, a10_1, a11_1;
288 mlib_s32 a00_2, a01_2, a10_2, a11_2;
289 mlib_s32 a00_3, a01_3, a10_3, a11_3;
290 mlib_s32 pix0_0, pix1_0, res0;
291 mlib_s32 pix0_1, pix1_1, res1;
292 mlib_s32 pix0_2, pix1_2, res2;
293 mlib_s32 pix0_3, pix1_3, res3;
294
295 CLIP(4);
296 dstLineEnd = (DTYPE *) dstData + 4 * xRight;
297 #if MLIB_SHIFT == 15
298 X = X >> 1;
299 Y = Y >> 1;
300 #endif /* MLIB_SHIFT == 15 */
301
302 GET_POINTERS(4);
303 LOAD(0, 0, 4);
304 LOAD(1, 1, 5);
305 LOAD(2, 2, 6);
306 LOAD(3, 3, 7);
307
308 #ifdef __SUNPRO_C
309 #pragma pipeloop(0)
310 #endif /* __SUNPRO_C */
311 for (; dstPixelPtr < dstLineEnd; dstPixelPtr += 4) {
312 COUNT(0);
313 COUNT(1);
314 COUNT(2);
315 COUNT(3);
316 GET_POINTERS(4);
317 LOAD(0, 0, 4);
318 LOAD(1, 1, 5);
319 LOAD(2, 2, 6);
320 LOAD(3, 3, 7);
321 dstPixelPtr[0] = (DTYPE) res0;
322 dstPixelPtr[1] = (DTYPE) res1;
323 dstPixelPtr[2] = (DTYPE) res2;
324 dstPixelPtr[3] = (DTYPE) res3;
325 }
326
327 COUNT(0);
328 COUNT(1);
329 COUNT(2);
330 COUNT(3);
331 dstPixelPtr[0] = (DTYPE) res0;
332 dstPixelPtr[1] = (DTYPE) res1;
333 dstPixelPtr[2] = (DTYPE) res2;
334 dstPixelPtr[3] = (DTYPE) res3;
335 }
336
337 return MLIB_SUCCESS;
338 }
339
340 /***************************************************************/