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 * Internal functions for mlib_ImageConv* on U8/S16/U16 type and
30 * MLIB_EDGE_SRC_EXTEND mask
31 */
32
33 #include "mlib_image.h"
34 #include "mlib_ImageConv.h"
35 #include "mlib_c_ImageConv.h"
36
37 /*
38 * This define switches between functions of different data types
39 */
40
41 #define IMG_TYPE 3
42
43 /***************************************************************/
44 #if IMG_TYPE == 1
45
46 #define DTYPE mlib_u8
47 #define CONV_FUNC(KERN) mlib_c_conv##KERN##ext_u8(PARAM)
48 #define CONV_FUNC_MxN mlib_c_convMxNext_u8(PARAM_MxN)
49 #define CONV_FUNC_I(KERN) mlib_i_conv##KERN##ext_u8(PARAM)
50 #define CONV_FUNC_MxN_I mlib_i_convMxNext_u8(PARAM_MxN)
51 #define DSCALE (1 << 24)
52 #define FROM_S32(x) (((x) >> 24) ^ 128)
53 #define S64TOS32(x) (x)
54 #define SAT_OFF -(1u << 31)
55
56 #elif IMG_TYPE == 2
57
58 #define DTYPE mlib_s16
59 #define CONV_FUNC(KERN) mlib_conv##KERN##ext_s16(PARAM)
60 #define CONV_FUNC_MxN mlib_convMxNext_s16(PARAM_MxN)
61 #define CONV_FUNC_I(KERN) mlib_i_conv##KERN##ext_s16(PARAM)
62 #define CONV_FUNC_MxN_I mlib_i_convMxNext_s16(PARAM_MxN)
63 #define DSCALE 65536.0
64 #define FROM_S32(x) ((x) >> 16)
65 #define S64TOS32(x) ((x) & 0xffffffff)
66 #define SAT_OFF
67
68 #elif IMG_TYPE == 3
69
70 #define DTYPE mlib_u16
71 #define CONV_FUNC(KERN) mlib_conv##KERN##ext_u16(PARAM)
72 #define CONV_FUNC_MxN mlib_convMxNext_u16(PARAM_MxN)
73 #define CONV_FUNC_I(KERN) mlib_i_conv##KERN##ext_u16(PARAM)
74 #define CONV_FUNC_MxN_I mlib_i_convMxNext_u16(PARAM_MxN)
75 #define DSCALE 65536.0
76 #define FROM_S32(x) (((x) >> 16) ^ 0x8000)
77 #define S64TOS32(x) (x)
78 #define SAT_OFF -(1u << 31)
79
80 #endif /* IMG_TYPE == 1 */
81
82 /***************************************************************/
83 #define PARAM \
84 mlib_image *dst, \
85 const mlib_image *src, \
86 mlib_s32 dx_l, \
87 mlib_s32 dx_r, \
88 mlib_s32 dy_t, \
89 mlib_s32 dy_b, \
90 const mlib_s32 *kern, \
91 mlib_s32 scalef_expon, \
92 mlib_s32 cmask
93
94 /***************************************************************/
95 #define PARAM_MxN \
96 mlib_image *dst, \
97 const mlib_image *src, \
98 const mlib_s32 *kernel, \
99 mlib_s32 m, \
100 mlib_s32 n, \
101 mlib_s32 dx_l, \
102 mlib_s32 dx_r, \
103 mlib_s32 dy_t, \
104 mlib_s32 dy_b, \
105 mlib_s32 scale, \
106 mlib_s32 cmask
107
108 /***************************************************************/
109 #define FTYPE mlib_d64
110
111 #ifndef MLIB_USE_FTOI_CLAMPING
112
113 #define CLAMP_S32(x) \
114 (((x) <= MLIB_S32_MIN) ? MLIB_S32_MIN : (((x) >= MLIB_S32_MAX) ? MLIB_S32_MAX : (mlib_s32)(x)))
115
116 #else
117
118 #define CLAMP_S32(x) ((mlib_s32)(x))
119
120 #endif /* MLIB_USE_FTOI_CLAMPING */
121
122 /***************************************************************/
123 #define D2I(x) CLAMP_S32((x) SAT_OFF)
124
125 /***************************************************************/
126 #ifdef _LITTLE_ENDIAN
127
128 #define STORE2(res0, res1) \
129 dp[0 ] = res1; \
130 dp[chan1] = res0
131
132 #else
133
134 #define STORE2(res0, res1) \
135 dp[0 ] = res0; \
136 dp[chan1] = res1
137
138 #endif /* _LITTLE_ENDIAN */
139
140 /***************************************************************/
141 #ifdef _NO_LONGLONG
142
143 #define LOAD_BUFF(buff) \
144 buff[i ] = sp[0]; \
145 buff[i + 1] = sp[chan1]
146
147 #else /* _NO_LONGLONG */
148
149 #ifdef _LITTLE_ENDIAN
150
151 #define LOAD_BUFF(buff) \
152 *(mlib_s64*)(buff + i) = (((mlib_s64)sp[chan1]) << 32) | S64TOS32((mlib_s64)sp[0])
153
154 #else /* _LITTLE_ENDIAN */
155
156 #define LOAD_BUFF(buff) \
157 *(mlib_s64*)(buff + i) = (((mlib_s64)sp[0]) << 32) | S64TOS32((mlib_s64)sp[chan1])
158
159 #endif /* _LITTLE_ENDIAN */
160 #endif /* _NO_LONGLONG */
161
162 /***************************************************************/
163 typedef union {
164 mlib_d64 d64;
165 struct {
166 mlib_s32 i0;
167 mlib_s32 i1;
168 } i32s;
169 } d64_2x32;
170
171 /***************************************************************/
172 #define DEF_VARS(type) \
173 type *adr_src, *sl, *sp, *sl1; \
174 type *adr_dst, *dl, *dp; \
175 FTYPE *pbuff = buff; \
176 mlib_s32 *buffi, *buffo; \
177 mlib_s32 wid, hgt, sll, dll; \
178 mlib_s32 nchannel, chan1, chan2; \
179 mlib_s32 i, j, c, swid
180
181 /***************************************************************/
182 #define GET_SRC_DST_PARAMETERS(type) \
183 hgt = mlib_ImageGetHeight(src); \
184 wid = mlib_ImageGetWidth(src); \
185 nchannel = mlib_ImageGetChannels(src); \
186 sll = mlib_ImageGetStride(src) / sizeof(type); \
187 dll = mlib_ImageGetStride(dst) / sizeof(type); \
188 adr_src = (type *)mlib_ImageGetData(src); \
189 adr_dst = (type *)mlib_ImageGetData(dst)
190
191 /***************************************************************/
192 #if IMG_TYPE == 1
193
194 /*
195 * Test for the presence of any "1" bit in bits
196 8 to 31 of val. If present, then val is either
197 negative or >255. If over/underflows of 8 bits
198 are uncommon, then this technique can be a win,
199 since only a single test, rather than two, is
200 necessary to determine if clamping is needed.
201 On the other hand, if over/underflows are common,
202 it adds an extra test.
203 */
204 #define CLAMP_STORE(dst, val) \
205 if (val & 0xffffff00) { \
206 if (val < MLIB_U8_MIN) \
207 dst = MLIB_U8_MIN; \
208 else \
209 dst = MLIB_U8_MAX; \
210 } else { \
211 dst = (mlib_u8)val; \
212 }
213
214 #elif IMG_TYPE == 2
215
216 #define CLAMP_STORE(dst, val) \
217 if (val >= MLIB_S16_MAX) \
218 dst = MLIB_S16_MAX; \
219 else if (val <= MLIB_S16_MIN) \
220 dst = MLIB_S16_MIN; \
221 else \
222 dst = (mlib_s16)val
223
224 #elif IMG_TYPE == 3
225
226 #define CLAMP_STORE(dst, val) \
227 if (val >= MLIB_U16_MAX) \
228 dst = MLIB_U16_MAX; \
229 else if (val <= MLIB_U16_MIN) \
230 dst = MLIB_U16_MIN; \
231 else \
232 dst = (mlib_u16)val
233
234 #endif /* IMG_TYPE == 1 */
235
236 /***************************************************************/
237 #define MAX_KER 7
238 #define MAX_N 15
239 #define BUFF_SIZE 1600
240 #define CACHE_SIZE (64*1024)
241
242 static mlib_status mlib_ImageConv1xN_ext(mlib_image *dst,
243 const mlib_image *src,
244 const mlib_d64 *k,
245 mlib_s32 n,
246 mlib_s32 dy_t,
247 mlib_s32 dy_b,
248 mlib_s32 cmask)
249 {
250 DTYPE *adr_src, *sl;
251 DTYPE *adr_dst, *dl, *dp;
252 FTYPE buff[BUFF_SIZE];
253 FTYPE *buffd;
254 FTYPE *pbuff = buff;
255 const FTYPE *pk;
256 FTYPE k0, k1, k2, k3;
257 FTYPE p0, p1, p2, p3, p4;
258 FTYPE *sbuff;
259 mlib_s32 l, k_off, off, bsize;
260 mlib_s32 max_hsize, smax_hsize, shgt, hsize, kh;
261 mlib_s32 d0, d1, ii;
262 mlib_s32 wid, hgt, sll, dll;
263 mlib_s32 nchannel;
264 mlib_s32 i, j, c;
265 GET_SRC_DST_PARAMETERS(DTYPE);
266
267 max_hsize = ((CACHE_SIZE/sizeof(DTYPE))/sll) - (n - 1);
268
269 if (max_hsize < 1) max_hsize = 1;
270 if (max_hsize > hgt) max_hsize = hgt;
271
272 shgt = hgt + (n - 1);
273 smax_hsize = max_hsize + (n - 1);
274
275 bsize = 2 * (smax_hsize + 1);
276
277 if (bsize > BUFF_SIZE) {
278 pbuff = mlib_malloc(sizeof(FTYPE)*bsize);
279
280 if (pbuff == NULL) return MLIB_FAILURE;
281 }
282
283 sbuff = pbuff;
284 buffd = sbuff + smax_hsize;
285
286 shgt -= (dy_t + dy_b);
287 k_off = 0;
288
289 for (l = 0; l < hgt; l += hsize) {
290 hsize = hgt - l;
291
292 if (hsize > max_hsize) hsize = max_hsize;
293
294 smax_hsize = hsize + (n - 1);
295
296 for (c = 0; c < nchannel; c++) {
297 if (!(cmask & (1 << (nchannel - 1 - c)))) continue;
298
299 sl = adr_src + c;
300 dl = adr_dst + c;
301
302 for (i = 0; i < hsize; i++) buffd[i] = 0.0;
303
304 for (j = 0; j < wid; j++) {
305 FTYPE *buff = sbuff;
306
307 for (i = k_off, ii = 0; (i < dy_t) && (ii < smax_hsize); i++, ii++) {
308 sbuff[i - k_off] = (FTYPE)sl[0];
309 }
310
311 for (; (i < shgt + dy_t) && (ii < smax_hsize); i++, ii++) {
312 sbuff[i - k_off] = (FTYPE)sl[(i - dy_t)*sll];
313 }
314
315 for (; (i < shgt + dy_t + dy_b) && (ii < smax_hsize); i++, ii++) {
316 sbuff[i - k_off] = (FTYPE)sl[(shgt - 1)*sll];
317 }
318
319 pk = k;
320
321 for (off = 0; off < (n - 4); off += 4) {
322
323 p2 = buff[0]; p3 = buff[1]; p4 = buff[2];
324 k0 = pk[0]; k1 = pk[1]; k2 = pk[2]; k3 = pk[3];
325
326 for (i = 0; i < hsize; i += 2) {
327 p0 = p2; p1 = p3; p2 = p4;
328
329 p3 = buff[i + 3]; p4 = buff[i + 4];
330
331 buffd[i ] += p0*k0 + p1*k1 + p2*k2 + p3*k3;
332 buffd[i + 1] += p1*k0 + p2*k1 + p3*k2 + p4*k3;
333 }
334
335 pk += 4;
336 buff += 4;
337 }
338
339 dp = dl;
340 kh = n - off;
341
342 if (kh == 4) {
343 p2 = buff[0]; p3 = buff[1]; p4 = buff[2];
344 k0 = pk[0]; k1 = pk[1]; k2 = pk[2]; k3 = pk[3];
345
346 for (i = 0; i <= (hsize - 2); i += 2) {
347 p0 = p2; p1 = p3; p2 = p4;
348
349 p3 = buff[i + 3]; p4 = buff[i + 4];
350
351 d0 = D2I(p0*k0 + p1*k1 + p2*k2 + p3*k3 + buffd[i ]);
352 d1 = D2I(p1*k0 + p2*k1 + p3*k2 + p4*k3 + buffd[i + 1]);
353
354 dp[0 ] = FROM_S32(d0);
355 dp[dll] = FROM_S32(d1);
356
357 buffd[i ] = 0.0;
358 buffd[i + 1] = 0.0;
359
360 dp += 2*dll;
361 }
362
363 if (i < hsize) {
364 p0 = p2; p1 = p3; p2 = p4;
365 p3 = buff[i + 3];
366 d0 = D2I(p0*k0 + p1*k1 + p2*k2 + p3*k3 + buffd[i]);
367 dp[0] = FROM_S32(d0);
368 buffd[i] = 0.0;
369 }
370
371 } else if (kh == 3) {
372
373 p2 = buff[0]; p3 = buff[1];
374 k0 = pk[0]; k1 = pk[1]; k2 = pk[2];
375
376 for (i = 0; i <= (hsize - 2); i += 2) {
377 p0 = p2; p1 = p3;
378
379 p2 = buff[i + 2]; p3 = buff[i + 3];
380
381 d0 = D2I(p0*k0 + p1*k1 + p2*k2 + buffd[i ]);
382 d1 = D2I(p1*k0 + p2*k1 + p3*k2 + buffd[i + 1]);
383
384 dp[0 ] = FROM_S32(d0);
385 dp[dll] = FROM_S32(d1);
386
387 buffd[i ] = 0.0;
388 buffd[i + 1] = 0.0;
389
390 dp += 2*dll;
391 }
392
393 if (i < hsize) {
394 p0 = p2; p1 = p3;
395 p2 = buff[i + 2];
396 d0 = D2I(p0*k0 + p1*k1 + p2*k2 + buffd[i]);
397 dp[0] = FROM_S32(d0);
398
399 buffd[i] = 0.0;
400 }
401
402 } else if (kh == 2) {
403
404 p2 = buff[0];
405 k0 = pk[0]; k1 = pk[1];
406
407 for (i = 0; i <= (hsize - 2); i += 2) {
408 p0 = p2;
409
410 p1 = buff[i + 1]; p2 = buff[i + 2];
411
412 d0 = D2I(p0*k0 + p1*k1 + buffd[i ]);
413 d1 = D2I(p1*k0 + p2*k1 + buffd[i + 1]);
414
415 dp[0 ] = FROM_S32(d0);
416 dp[dll] = FROM_S32(d1);
417
418 buffd[i ] = 0.0;
419 buffd[i + 1] = 0.0;
420
421 dp += 2*dll;
422 }
423
424 if (i < hsize) {
425 p0 = p2;
426 p1 = buff[i + 1];
427 d0 = D2I(p0*k0 + p1*k1 + buffd[i]);
428 dp[0] = FROM_S32(d0);
429
430 buffd[i] = 0.0;
431 }
432
433 } else /* kh == 1 */{
434
435 k0 = pk[0];
436
437 for (i = 0; i <= (hsize - 2); i += 2) {
438 p0 = buff[i]; p1 = buff[i + 1];
439
440 d0 = D2I(p0*k0 + buffd[i ]);
441 d1 = D2I(p1*k0 + buffd[i + 1]);
442
443 dp[0 ] = FROM_S32(d0);
444 dp[dll] = FROM_S32(d1);
445
446 buffd[i ] = 0.0;
447 buffd[i + 1] = 0.0;
448
449 dp += 2*dll;
450 }
451
452 if (i < hsize) {
453 p0 = buff[i];
454 d0 = D2I(p0*k0 + buffd[i]);
455 dp[0] = FROM_S32(d0);
456
457 buffd[i] = 0.0;
458 }
459 }
460
461 /* next line */
462 sl += nchannel;
463 dl += nchannel;
464 }
465 }
466
467 k_off += max_hsize;
468 adr_dst += max_hsize*dll;
469 }
470
471 if (pbuff != buff) mlib_free(pbuff);
472
473 return MLIB_SUCCESS;
474 }
475
476 /***************************************************************/
477 mlib_status CONV_FUNC_MxN
478 {
479 DTYPE *adr_src, *sl, *sp = NULL;
480 DTYPE *adr_dst, *dl, *dp = NULL;
481 FTYPE buff[BUFF_SIZE], *buffs_arr[2*(MAX_N + 1)];
482 FTYPE **buffs = buffs_arr, *buffd;
483 FTYPE akernel[256], *k = akernel, fscale = DSCALE;
484 FTYPE *pbuff = buff;
485 FTYPE k0, k1, k2, k3, k4, k5, k6;
486 FTYPE p0, p1, p2, p3, p4, p5, p6, p7;
487 mlib_s32 *buffi;
488 mlib_s32 mn, l, off, kw, bsize, buff_ind;
489 mlib_s32 d0, d1;
490 mlib_s32 wid, hgt, sll, dll;
491 mlib_s32 nchannel, chan1, chan2;
492 mlib_s32 i, j, c, swid;
493 d64_2x32 dd;
494 mlib_status status = MLIB_SUCCESS;
495
496 GET_SRC_DST_PARAMETERS(DTYPE);
497
498 if (scale > 30) {
499 fscale *= 1.0/(1 << 30);
500 scale -= 30;
501 }
502
503 fscale /= (1 << scale);
504
505 mn = m*n;
506
507 if (mn > 256) {
508 k = mlib_malloc(mn*sizeof(mlib_d64));
509
510 if (k == NULL) return MLIB_FAILURE;
511 }
512
513 for (i = 0; i < mn; i++) {
514 k[i] = kernel[i]*fscale;
515 }
516
517 if (m == 1) {
518 status = mlib_ImageConv1xN_ext(dst, src, k, n, dy_t, dy_b, cmask);
519 FREE_AND_RETURN_STATUS;
520 }
521
522 swid = wid + (m - 1);
523
524 bsize = (n + 3)*swid;
525
526 if ((bsize > BUFF_SIZE) || (n > MAX_N)) {
527 pbuff = mlib_malloc(sizeof(FTYPE)*bsize + sizeof(FTYPE *)*2*(n + 1));
528
529 if (pbuff == NULL) {
530 status = MLIB_FAILURE;
531 FREE_AND_RETURN_STATUS;
532 }
533 buffs = (FTYPE **)(pbuff + bsize);
534 }
535
536 for (l = 0; l < (n + 1); l++) buffs[l] = pbuff + l*swid;
537 for (l = 0; l < (n + 1); l++) buffs[l + (n + 1)] = buffs[l];
538 buffd = buffs[n] + swid;
539 buffi = (mlib_s32*)(buffd + swid);
540
541 chan1 = nchannel;
542 chan2 = chan1 + chan1;
543
544 swid -= (dx_l + dx_r);
545
546 for (c = 0; c < nchannel; c++) {
547 if (!(cmask & (1 << (chan1 - 1 - c)))) continue;
548
549 sl = adr_src + c;
550 dl = adr_dst + c;
551
552 for (l = 0; l < n; l++) {
553 FTYPE *buff = buffs[l];
554
555 for (i = 0; i < dx_l; i++) {
556 buff[i] = (FTYPE)sl[0];
557 }
558
559 for (i = 0; i < swid; i++) {
560 buff[i + dx_l] = (FTYPE)sl[i*chan1];
561 }
562
563 for (i = 0; i < dx_r; i++) {
564 buff[swid + dx_l + i] = buff[swid + dx_l - 1];
565 }
566
567 if ((l >= dy_t) && (l < hgt + n - dy_b - 2)) sl += sll;
568 }
569
570 buff_ind = 0;
571
572 for (i = 0; i < wid; i++) buffd[i] = 0.0;
573
574 for (j = 0; j < hgt; j++) {
575 FTYPE **buffc = buffs + buff_ind;
576 FTYPE *buffn = buffc[n];
577 FTYPE *pk = k;
578
579 for (l = 0; l < n; l++) {
580 FTYPE *buff_l = buffc[l];
581
582 for (off = 0; off < m;) {
583 FTYPE *buff = buff_l + off;
584
585 kw = m - off;
586
587 if (kw > 2*MAX_KER) kw = MAX_KER; else
588 if (kw > MAX_KER) kw = kw/2;
589 off += kw;
590
591 sp = sl;
592 dp = dl;
593
594 if (kw == 7) {
595
596 p2 = buff[0]; p3 = buff[1]; p4 = buff[2];
597 p5 = buff[3]; p6 = buff[4]; p7 = buff[5];
598
599 k0 = pk[0]; k1 = pk[1]; k2 = pk[2]; k3 = pk[3];
600 k4 = pk[4]; k5 = pk[5]; k6 = pk[6];
601
602 if (l < (n - 1) || off < m) {
603 for (i = 0; i <= (wid - 2); i += 2) {
604 p0 = p2; p1 = p3; p2 = p4; p3 = p5; p4 = p6; p5 = p7;
605
606 p6 = buff[i + 6]; p7 = buff[i + 7];
607
608 buffd[i ] += p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + p5*k5 + p6*k6;
609 buffd[i + 1] += p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + p6*k5 + p7*k6;
610 }
611
612 } else {
613 for (i = 0; i <= (wid - 2); i += 2) {
614 p0 = p2; p1 = p3; p2 = p4; p3 = p5; p4 = p6; p5 = p7;
615
616 p6 = buff[i + 6]; p7 = buff[i + 7];
617
618 LOAD_BUFF(buffi);
619
620 dd.d64 = *(FTYPE *)(buffi + i);
621 buffn[i + dx_l ] = (FTYPE)dd.i32s.i0;
622 buffn[i + dx_l + 1] = (FTYPE)dd.i32s.i1;
623
624 d0 = D2I(p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + p5*k5 + p6*k6 + buffd[i ]);
625 d1 = D2I(p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + p6*k5 + p7*k6 + buffd[i + 1]);
626
627 dp[0 ] = FROM_S32(d0);
628 dp[chan1] = FROM_S32(d1);
629
630 buffd[i ] = 0.0;
631 buffd[i + 1] = 0.0;
632
633 sp += chan2;
634 dp += chan2;
635 }
636 }
637
638 } else if (kw == 6) {
639
640 p2 = buff[0]; p3 = buff[1]; p4 = buff[2];
641 p5 = buff[3]; p6 = buff[4];
642
643 k0 = pk[0]; k1 = pk[1]; k2 = pk[2]; k3 = pk[3];
644 k4 = pk[4]; k5 = pk[5];
645
646 if (l < (n - 1) || off < m) {
647 for (i = 0; i <= (wid - 2); i += 2) {
648 p0 = p2; p1 = p3; p2 = p4; p3 = p5; p4 = p6;
649
650 p5 = buff[i + 5]; p6 = buff[i + 6];
651
652 buffd[i ] += p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + p5*k5;
653 buffd[i + 1] += p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + p6*k5;
654 }
655
656 } else {
657 for (i = 0; i <= (wid - 2); i += 2) {
658 p0 = p2; p1 = p3; p2 = p4; p3 = p5; p4 = p6;
659
660 p5 = buff[i + 5]; p6 = buff[i + 6];
661
662 LOAD_BUFF(buffi);
663
664 dd.d64 = *(FTYPE *)(buffi + i);
665 buffn[i + dx_l ] = (FTYPE)dd.i32s.i0;
666 buffn[i + dx_l + 1] = (FTYPE)dd.i32s.i1;
667
668 d0 = D2I(p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + p5*k5 + buffd[i ]);
669 d1 = D2I(p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + p6*k5 + buffd[i + 1]);
670
671 dp[0 ] = FROM_S32(d0);
672 dp[chan1] = FROM_S32(d1);
673
674 buffd[i ] = 0.0;
675 buffd[i + 1] = 0.0;
676
677 sp += chan2;
678 dp += chan2;
679 }
680 }
681
682 } else if (kw == 5) {
683
684 p2 = buff[0]; p3 = buff[1]; p4 = buff[2];
685 p5 = buff[3];
686
687 k0 = pk[0]; k1 = pk[1]; k2 = pk[2]; k3 = pk[3];
688 k4 = pk[4];
689
690 if (l < (n - 1) || off < m) {
691 for (i = 0; i <= (wid - 2); i += 2) {
692 p0 = p2; p1 = p3; p2 = p4; p3 = p5;
693
694 p4 = buff[i + 4]; p5 = buff[i + 5];
695
696 buffd[i ] += p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4;
697 buffd[i + 1] += p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4;
698 }
699
700 } else {
701 for (i = 0; i <= (wid - 2); i += 2) {
702 p0 = p2; p1 = p3; p2 = p4; p3 = p5;
703
704 p4 = buff[i + 4]; p5 = buff[i + 5];
705
706 LOAD_BUFF(buffi);
707
708 dd.d64 = *(FTYPE *)(buffi + i);
709 buffn[i + dx_l ] = (FTYPE)dd.i32s.i0;
710 buffn[i + dx_l + 1] = (FTYPE)dd.i32s.i1;
711
712 d0 = D2I(p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + buffd[i ]);
713 d1 = D2I(p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + buffd[i + 1]);
714
715 dp[0 ] = FROM_S32(d0);
716 dp[chan1] = FROM_S32(d1);
717
718 buffd[i ] = 0.0;
719 buffd[i + 1] = 0.0;
720
721 sp += chan2;
722 dp += chan2;
723 }
724 }
725
726 } else if (kw == 4) {
727
728 p2 = buff[0]; p3 = buff[1]; p4 = buff[2];
729
730 k0 = pk[0]; k1 = pk[1]; k2 = pk[2]; k3 = pk[3];
731
732 if (l < (n - 1) || off < m) {
733 for (i = 0; i <= (wid - 2); i += 2) {
734 p0 = p2; p1 = p3; p2 = p4;
735
736 p3 = buff[i + 3]; p4 = buff[i + 4];
737
738 buffd[i ] += p0*k0 + p1*k1 + p2*k2 + p3*k3;
739 buffd[i + 1] += p1*k0 + p2*k1 + p3*k2 + p4*k3;
740 }
741
742 } else {
743 for (i = 0; i <= (wid - 2); i += 2) {
744 p0 = p2; p1 = p3; p2 = p4;
745
746 p3 = buff[i + 3]; p4 = buff[i + 4];
747
748 LOAD_BUFF(buffi);
749
750 dd.d64 = *(FTYPE *)(buffi + i);
751 buffn[i + dx_l ] = (FTYPE)dd.i32s.i0;
752 buffn[i + dx_l + 1] = (FTYPE)dd.i32s.i1;
753
754 d0 = D2I(p0*k0 + p1*k1 + p2*k2 + p3*k3 + buffd[i ]);
755 d1 = D2I(p1*k0 + p2*k1 + p3*k2 + p4*k3 + buffd[i + 1]);
756
757 dp[0 ] = FROM_S32(d0);
758 dp[chan1] = FROM_S32(d1);
759
760 buffd[i ] = 0.0;
761 buffd[i + 1] = 0.0;
762
763 sp += chan2;
764 dp += chan2;
765 }
766 }
767
768 } else if (kw == 3) {
769
770 p2 = buff[0]; p3 = buff[1];
771 k0 = pk[0]; k1 = pk[1]; k2 = pk[2];
772
773 if (l < (n - 1) || off < m) {
774 for (i = 0; i <= (wid - 2); i += 2) {
775 p0 = p2; p1 = p3;
776
777 p2 = buff[i + 2]; p3 = buff[i + 3];
778
779 buffd[i ] += p0*k0 + p1*k1 + p2*k2;
780 buffd[i + 1] += p1*k0 + p2*k1 + p3*k2;
781 }
782
783 } else {
784 for (i = 0; i <= (wid - 2); i += 2) {
785 p0 = p2; p1 = p3;
786
787 p2 = buff[i + 2]; p3 = buff[i + 3];
788
789 LOAD_BUFF(buffi);
790
791 dd.d64 = *(FTYPE *)(buffi + i);
792 buffn[i + dx_l ] = (FTYPE)dd.i32s.i0;
793 buffn[i + dx_l + 1] = (FTYPE)dd.i32s.i1;
794
795 d0 = D2I(p0*k0 + p1*k1 + p2*k2 + buffd[i ]);
796 d1 = D2I(p1*k0 + p2*k1 + p3*k2 + buffd[i + 1]);
797
798 dp[0 ] = FROM_S32(d0);
799 dp[chan1] = FROM_S32(d1);
800
801 buffd[i ] = 0.0;
802 buffd[i + 1] = 0.0;
803
804 sp += chan2;
805 dp += chan2;
806 }
807 }
808
809 } else /* if (kw == 2) */ {
810
811 p2 = buff[0];
812 k0 = pk[0]; k1 = pk[1];
813
814 if (l < (n - 1) || off < m) {
815 for (i = 0; i <= (wid - 2); i += 2) {
816 p0 = p2;
817
818 p1 = buff[i + 1]; p2 = buff[i + 2];
819
820 buffd[i ] += p0*k0 + p1*k1;
821 buffd[i + 1] += p1*k0 + p2*k1;
822 }
823
824 } else {
825 for (i = 0; i <= (wid - 2); i += 2) {
826 p0 = p2;
827
828 p1 = buff[i + 1]; p2 = buff[i + 2];
829
830 LOAD_BUFF(buffi);
831
832 dd.d64 = *(FTYPE *)(buffi + i);
833 buffn[i + dx_l ] = (FTYPE)dd.i32s.i0;
834 buffn[i + dx_l + 1] = (FTYPE)dd.i32s.i1;
835
836 d0 = D2I(p0*k0 + p1*k1 + buffd[i ]);
837 d1 = D2I(p1*k0 + p2*k1 + buffd[i + 1]);
838
839 dp[0 ] = FROM_S32(d0);
840 dp[chan1] = FROM_S32(d1);
841
842 buffd[i ] = 0.0;
843 buffd[i + 1] = 0.0;
844
845 sp += chan2;
846 dp += chan2;
847 }
848 }
849 }
850
851 pk += kw;
852 }
853 }
854
855 /* last pixels */
856 for (; i < wid; i++) {
857 FTYPE *pk = k, s = 0;
858 mlib_s32 x, d0;
859
860 for (l = 0; l < n; l++) {
861 FTYPE *buff = buffc[l] + i;
862
863 for (x = 0; x < m; x++) s += buff[x] * (*pk++);
864 }
865
866 d0 = D2I(s);
867 dp[0] = FROM_S32(d0);
868
869 buffn[i + dx_l] = (FTYPE)sp[0];
870
871 sp += chan1;
872 dp += chan1;
873 }
874
875 for (; i < swid; i++) {
876 buffn[i + dx_l] = (FTYPE)sp[0];
877 sp += chan1;
878 }
879
880 for (i = 0; i < dx_l; i++) buffn[i] = buffn[dx_l];
881 for (i = 0; i < dx_r; i++) buffn[swid + dx_l + i] = buffn[swid + dx_l - 1];
882
883 /* next line */
884
885 if (j < hgt - dy_b - 2) sl += sll;
886 dl += dll;
887
888 buff_ind++;
889
890 if (buff_ind >= n + 1) buff_ind = 0;
891 }
892 }
893
894 FREE_AND_RETURN_STATUS;
895 }
896
897 /***************************************************************/
898 #define STORE_RES(res, x) \
899 x >>= shift2; \
900 CLAMP_STORE(res, x)
901
902 mlib_status CONV_FUNC_MxN_I
903 {
904 DTYPE *adr_src, *sl, *sp = NULL;
905 DTYPE *adr_dst, *dl, *dp = NULL;
906 mlib_s32 buff[BUFF_SIZE], *buffs_arr[2*(MAX_N + 1)];
907 mlib_s32 *pbuff = buff;
908 mlib_s32 **buffs = buffs_arr, *buffd;
909 mlib_s32 l, off, kw, bsize, buff_ind;
910 mlib_s32 d0, d1, shift1, shift2;
911 mlib_s32 k0, k1, k2, k3, k4, k5, k6;
912 mlib_s32 p0, p1, p2, p3, p4, p5, p6, p7;
913 mlib_s32 wid, hgt, sll, dll;
914 mlib_s32 nchannel, chan1;
915 mlib_s32 i, j, c, swid;
916 mlib_s32 chan2;
917 mlib_s32 k_locl[MAX_N*MAX_N], *k = k_locl;
918 GET_SRC_DST_PARAMETERS(DTYPE);
919
920 #if IMG_TYPE != 1
921 shift1 = 16;
922 #else
923 shift1 = 8;
924 #endif /* IMG_TYPE != 1 */
925 shift2 = scale - shift1;
926
927 chan1 = nchannel;
928 chan2 = chan1 + chan1;
929
930 swid = wid + (m - 1);
931
932 bsize = (n + 2)*swid;
933
934 if ((bsize > BUFF_SIZE) || (n > MAX_N)) {
935 pbuff = mlib_malloc(sizeof(mlib_s32)*bsize + sizeof(mlib_s32 *)*2*(n + 1));
936
937 if (pbuff == NULL) return MLIB_FAILURE;
938 buffs = (mlib_s32 **)(pbuff + bsize);
939 }
940
941 for (l = 0; l < (n + 1); l++) buffs[l] = pbuff + l*swid;
942 for (l = 0; l < (n + 1); l++) buffs[l + (n + 1)] = buffs[l];
943 buffd = buffs[n] + swid;
944
945 if (m*n > MAX_N*MAX_N) {
946 k = mlib_malloc(sizeof(mlib_s32)*(m*n));
947
948 if (k == NULL) {
949 if (pbuff != buff) mlib_free(pbuff);
950 return MLIB_FAILURE;
951 }
952 }
953
954 for (i = 0; i < m*n; i++) {
955 k[i] = kernel[i] >> shift1;
956 }
957
958 swid -= (dx_l + dx_r);
959
960 for (c = 0; c < nchannel; c++) {
961 if (!(cmask & (1 << (nchannel - 1 - c)))) continue;
962
963 sl = adr_src + c;
964 dl = adr_dst + c;
965
966 for (l = 0; l < n; l++) {
967 mlib_s32 *buff = buffs[l];
968
969 for (i = 0; i < dx_l; i++) {
970 buff[i] = (mlib_s32)sl[0];
971 }
972
973 for (i = 0; i < swid; i++) {
974 buff[i + dx_l] = (mlib_s32)sl[i*chan1];
975 }
976
977 for (i = 0; i < dx_r; i++) {
978 buff[swid + dx_l + i] = buff[swid + dx_l - 1];
979 }
980
981 if ((l >= dy_t) && (l < hgt + n - dy_b - 2)) sl += sll;
982 }
983
984 buff_ind = 0;
985
986 for (i = 0; i < wid; i++) buffd[i] = 0;
987
988 for (j = 0; j < hgt; j++) {
989 mlib_s32 **buffc = buffs + buff_ind;
990 mlib_s32 *buffn = buffc[n];
991 mlib_s32 *pk = k;
992
993 for (l = 0; l < n; l++) {
994 mlib_s32 *buff_l = buffc[l];
995
996 for (off = 0; off < m;) {
997 mlib_s32 *buff = buff_l + off;
998
999 sp = sl;
1000 dp = dl;
1001
1002 kw = m - off;
1003
1004 if (kw > 2*MAX_KER) kw = MAX_KER; else
1005 if (kw > MAX_KER) kw = kw/2;
1006 off += kw;
1007
1008 if (kw == 7) {
1009
1010 p2 = buff[0]; p3 = buff[1]; p4 = buff[2];
1011 p5 = buff[3]; p6 = buff[4]; p7 = buff[5];
1012
1013 k0 = pk[0]; k1 = pk[1]; k2 = pk[2]; k3 = pk[3];
1014 k4 = pk[4]; k5 = pk[5]; k6 = pk[6];
1015
1016 if (l < (n - 1) || off < m) {
1017 for (i = 0; i <= (wid - 2); i += 2) {
1018 p0 = p2; p1 = p3; p2 = p4; p3 = p5; p4 = p6; p5 = p7;
1019
1020 p6 = buff[i + 6]; p7 = buff[i + 7];
1021
1022 buffd[i ] += p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + p5*k5 + p6*k6;
1023 buffd[i + 1] += p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + p6*k5 + p7*k6;
1024 }
1025
1026 } else {
1027 for (i = 0; i <= (wid - 2); i += 2) {
1028 p0 = p2; p1 = p3; p2 = p4; p3 = p5; p4 = p6; p5 = p7;
1029
1030 p6 = buff[i + 6]; p7 = buff[i + 7];
1031
1032 buffn[i + dx_l ] = (mlib_s32)sp[0];
1033 buffn[i + dx_l + 1] = (mlib_s32)sp[chan1];
1034
1035 d0 = (p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + p5*k5 + p6*k6 + buffd[i ]);
1036 d1 = (p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + p6*k5 + p7*k6 + buffd[i + 1]);
1037
1038 STORE_RES(dp[0 ], d0);
1039 STORE_RES(dp[chan1], d1);
1040
1041 buffd[i ] = 0;
1042 buffd[i + 1] = 0;
1043
1044 sp += chan2;
1045 dp += chan2;
1046 }
1047 }
1048
1049 } else if (kw == 6) {
1050
1051 p2 = buff[0]; p3 = buff[1]; p4 = buff[2];
1052 p5 = buff[3]; p6 = buff[4];
1053
1054 k0 = pk[0]; k1 = pk[1]; k2 = pk[2]; k3 = pk[3];
1055 k4 = pk[4]; k5 = pk[5];
1056
1057 if (l < (n - 1) || off < m) {
1058 for (i = 0; i <= (wid - 2); i += 2) {
1059 p0 = p2; p1 = p3; p2 = p4; p3 = p5; p4 = p6;
1060
1061 p5 = buff[i + 5]; p6 = buff[i + 6];
1062
1063 buffd[i ] += p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + p5*k5;
1064 buffd[i + 1] += p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + p6*k5;
1065 }
1066
1067 } else {
1068 for (i = 0; i <= (wid - 2); i += 2) {
1069 p0 = p2; p1 = p3; p2 = p4; p3 = p5; p4 = p6;
1070
1071 p5 = buff[i + 5]; p6 = buff[i + 6];
1072
1073 buffn[i + dx_l ] = (mlib_s32)sp[0];
1074 buffn[i + dx_l + 1] = (mlib_s32)sp[chan1];
1075
1076 d0 = (p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + p5*k5 + buffd[i ]);
1077 d1 = (p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + p6*k5 + buffd[i + 1]);
1078
1079 STORE_RES(dp[0 ], d0);
1080 STORE_RES(dp[chan1], d1);
1081
1082 buffd[i ] = 0;
1083 buffd[i + 1] = 0;
1084
1085 sp += chan2;
1086 dp += chan2;
1087 }
1088 }
1089
1090 } else if (kw == 5) {
1091
1092 p2 = buff[0]; p3 = buff[1]; p4 = buff[2];
1093 p5 = buff[3];
1094
1095 k0 = pk[0]; k1 = pk[1]; k2 = pk[2]; k3 = pk[3];
1096 k4 = pk[4];
1097
1098 if (l < (n - 1) || off < m) {
1099 for (i = 0; i <= (wid - 2); i += 2) {
1100 p0 = p2; p1 = p3; p2 = p4; p3 = p5;
1101
1102 p4 = buff[i + 4]; p5 = buff[i + 5];
1103
1104 buffd[i ] += p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4;
1105 buffd[i + 1] += p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4;
1106 }
1107
1108 } else {
1109 for (i = 0; i <= (wid - 2); i += 2) {
1110 p0 = p2; p1 = p3; p2 = p4; p3 = p5;
1111
1112 p4 = buff[i + 4]; p5 = buff[i + 5];
1113
1114 buffn[i + dx_l ] = (mlib_s32)sp[0];
1115 buffn[i + dx_l + 1] = (mlib_s32)sp[chan1];
1116
1117 d0 = (p0*k0 + p1*k1 + p2*k2 + p3*k3 + p4*k4 + buffd[i ]);
1118 d1 = (p1*k0 + p2*k1 + p3*k2 + p4*k3 + p5*k4 + buffd[i + 1]);
1119
1120 STORE_RES(dp[0 ], d0);
1121 STORE_RES(dp[chan1], d1);
1122
1123 buffd[i ] = 0;
1124 buffd[i + 1] = 0;
1125
1126 sp += chan2;
1127 dp += chan2;
1128 }
1129 }
1130
1131 } else if (kw == 4) {
1132
1133 p2 = buff[0]; p3 = buff[1]; p4 = buff[2];
1134
1135 k0 = pk[0]; k1 = pk[1]; k2 = pk[2]; k3 = pk[3];
1136
1137 if (l < (n - 1) || off < m) {
1138 for (i = 0; i <= (wid - 2); i += 2) {
1139 p0 = p2; p1 = p3; p2 = p4;
1140
1141 p3 = buff[i + 3]; p4 = buff[i + 4];
1142
1143 buffd[i ] += p0*k0 + p1*k1 + p2*k2 + p3*k3;
1144 buffd[i + 1] += p1*k0 + p2*k1 + p3*k2 + p4*k3;
1145 }
1146
1147 } else {
1148 for (i = 0; i <= (wid - 2); i += 2) {
1149 p0 = p2; p1 = p3; p2 = p4;
1150
1151 p3 = buff[i + 3]; p4 = buff[i + 4];
1152
1153 buffn[i + dx_l ] = (mlib_s32)sp[0];
1154 buffn[i + dx_l + 1] = (mlib_s32)sp[chan1];
1155
1156 d0 = (p0*k0 + p1*k1 + p2*k2 + p3*k3 + buffd[i ]);
1157 d1 = (p1*k0 + p2*k1 + p3*k2 + p4*k3 + buffd[i + 1]);
1158
1159 STORE_RES(dp[0 ], d0);
1160 STORE_RES(dp[chan1], d1);
1161
1162 buffd[i ] = 0;
1163 buffd[i + 1] = 0;
1164
1165 sp += chan2;
1166 dp += chan2;
1167 }
1168 }
1169
1170 } else if (kw == 3) {
1171
1172 p2 = buff[0]; p3 = buff[1];
1173 k0 = pk[0]; k1 = pk[1]; k2 = pk[2];
1174
1175 if (l < (n - 1) || off < m) {
1176 for (i = 0; i <= (wid - 2); i += 2) {
1177 p0 = p2; p1 = p3;
1178
1179 p2 = buff[i + 2]; p3 = buff[i + 3];
1180
1181 buffd[i ] += p0*k0 + p1*k1 + p2*k2;
1182 buffd[i + 1] += p1*k0 + p2*k1 + p3*k2;
1183 }
1184
1185 } else {
1186 for (i = 0; i <= (wid - 2); i += 2) {
1187 p0 = p2; p1 = p3;
1188
1189 p2 = buff[i + 2]; p3 = buff[i + 3];
1190
1191 buffn[i + dx_l ] = (mlib_s32)sp[0];
1192 buffn[i + dx_l + 1] = (mlib_s32)sp[chan1];
1193
1194 d0 = (p0*k0 + p1*k1 + p2*k2 + buffd[i ]);
1195 d1 = (p1*k0 + p2*k1 + p3*k2 + buffd[i + 1]);
1196
1197 STORE_RES(dp[0 ], d0);
1198 STORE_RES(dp[chan1], d1);
1199
1200 buffd[i ] = 0;
1201 buffd[i + 1] = 0;
1202
1203 sp += chan2;
1204 dp += chan2;
1205 }
1206 }
1207
1208 } else if (kw == 2) {
1209
1210 p2 = buff[0];
1211 k0 = pk[0]; k1 = pk[1];
1212
1213 if (l < (n - 1) || off < m) {
1214 for (i = 0; i <= (wid - 2); i += 2) {
1215 p0 = p2;
1216
1217 p1 = buff[i + 1]; p2 = buff[i + 2];
1218
1219 buffd[i ] += p0*k0 + p1*k1;
1220 buffd[i + 1] += p1*k0 + p2*k1;
1221 }
1222
1223 } else {
1224 for (i = 0; i <= (wid - 2); i += 2) {
1225 p0 = p2;
1226
1227 p1 = buff[i + 1]; p2 = buff[i + 2];
1228
1229 buffn[i + dx_l ] = (mlib_s32)sp[0];
1230 buffn[i + dx_l + 1] = (mlib_s32)sp[chan1];
1231
1232 d0 = (p0*k0 + p1*k1 + buffd[i ]);
1233 d1 = (p1*k0 + p2*k1 + buffd[i + 1]);
1234
1235 STORE_RES(dp[0 ], d0);
1236 STORE_RES(dp[chan1], d1);
1237
1238 buffd[i ] = 0;
1239 buffd[i + 1] = 0;
1240
1241 sp += chan2;
1242 dp += chan2;
1243 }
1244 }
1245
1246 } else /* kw == 1 */{
1247
1248 k0 = pk[0];
1249
1250 if (l < (n - 1) || off < m) {
1251 for (i = 0; i <= (wid - 2); i += 2) {
1252 p0 = buff[i]; p1 = buff[i + 1];
1253
1254 buffd[i ] += p0*k0;
1255 buffd[i + 1] += p1*k0;
1256 }
1257
1258 } else {
1259 for (i = 0; i <= (wid - 2); i += 2) {
1260 p0 = buff[i]; p1 = buff[i + 1];
1261
1262 buffn[i + dx_l ] = (mlib_s32)sp[0];
1263 buffn[i + dx_l + 1] = (mlib_s32)sp[chan1];
1264
1265 d0 = (p0*k0 + buffd[i ]);
1266 d1 = (p1*k0 + buffd[i + 1]);
1267
1268 STORE_RES(dp[0 ], d0);
1269 STORE_RES(dp[chan1], d1);
1270
1271 buffd[i ] = 0;
1272 buffd[i + 1] = 0;
1273
1274 sp += chan2;
1275 dp += chan2;
1276 }
1277 }
1278 }
1279
1280 pk += kw;
1281 }
1282 }
1283
1284 /* last pixels */
1285 for (; i < wid; i++) {
1286 mlib_s32 *pk = k, x, s = 0;
1287
1288 for (l = 0; l < n; l++) {
1289 mlib_s32 *buff = buffc[l] + i;
1290
1291 for (x = 0; x < m; x++) s += buff[x] * (*pk++);
1292 }
1293
1294 STORE_RES(dp[0], s);
1295
1296 buffn[i + dx_l] = (mlib_s32)sp[0];
1297
1298 sp += chan1;
1299 dp += chan1;
1300 }
1301
1302 for (; i < swid; i++) {
1303 buffn[i + dx_l] = (mlib_s32)sp[0];
1304 sp += chan1;
1305 }
1306
1307 for (i = 0; i < dx_l; i++) buffn[i] = buffn[dx_l];
1308 for (i = 0; i < dx_r; i++) buffn[swid + dx_l + i] = buffn[swid + dx_l - 1];
1309
1310 /* next line */
1311
1312 if (j < hgt - dy_b - 2) sl += sll;
1313 dl += dll;
1314
1315 buff_ind++;
1316
1317 if (buff_ind >= n + 1) buff_ind = 0;
1318 }
1319 }
1320
1321 if (pbuff != buff) mlib_free(pbuff);
1322 if (k != k_locl) mlib_free(k);
1323
1324 return MLIB_SUCCESS;
1325 }
1326
1327 /***************************************************************/