1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
|
#include <config.h>
#ifndef _plan9_
#ifndef __cplusplus
#include <math.h>
#endif
#ifndef NO_MALLOC_H
#include <malloc.h>
#endif
#include <string.h>
#include <config.h>
#include <stdio.h>
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif
#include <stdlib.h>
#else
#include <u.h>
#include <libc.h>
#include <stdio.h>
#endif
#include <xerror.h>
#include <filter.h>
#include <fractal.h>
#include <xthread.h>
struct antidata {
int shift;
};
static int requirement(struct filter *f, struct requirements *r)
{
f->req = *r;
r->nimages = 1;
r->supportedmask = TRUECOLOR24 | TRUECOLOR | TRUECOLOR16 | GRAYSCALE;
return (f->next->action->requirement(f->next, r));
}
static int initialize(struct filter *f, struct initdata *i)
{
struct antidata *s = (struct antidata *) f->data;
if (i->image->width * i->image->height * i->image->bytesperpixel * 2 *
16 > 15 * 1024 * 1024) {
s->shift = 1;
} else {
s->shift = 2;
}
inhermisc(f, i);
if (!inherimage
(f, i, TOUCHIMAGE | IMAGEDATA,
(int) (((unsigned int) i->image->width) << s->shift),
(int) (((unsigned int) i->image->height) << s->shift), NULL, 0,
0))
return 0;
if (i->image == NULL) {
return 0;
}
return (f->previous->action->initialize(f->previous, i));
}
static struct filter *getinstance(CONST struct filteraction *a)
{
struct filter *f = createfilter(a);
struct antidata *i = (struct antidata *) calloc(1, sizeof(*i));
f->childimage = NULL;
f->data = i;
f->name = "Antialiasing";
return (f);
}
static void destroyinstance(struct filter *f)
{
destroyinheredimage(f);
free(f->data);
free(f);
}
static void antigray(void *data, struct taskinfo *task, int r1, int r2)
{
struct filter *f = (struct filter *) data;
struct image *srci = f->childimage, *desti = f->image;
struct antidata *s = (struct antidata *) f->data;
register unsigned char *src;
unsigned char *destend, *dest;
unsigned int ystart, y;
unsigned int xstart;
register unsigned int sum;
unsigned int xstep = (1U << (s->shift));
int i;
for (i = r1; i < r2; i++) {
dest = (unsigned char *) desti->currlines[i];
destend = dest + desti->width;
ystart = ((unsigned int) i) << s->shift;
xstart = 0;
for (; dest < destend; dest++) {
if (xstep > 2) {
sum = 0;
for (y = 0; y < 4; y++) {
src =
(unsigned char *) srci->currlines[y + ystart] +
xstart;
sum += (unsigned int) src[0];
sum += (unsigned int) src[1];
sum += (unsigned int) src[2];
sum += (unsigned int) src[3];
}
sum >>= 4;
} else {
src = (unsigned char *) srci->currlines[ystart] + xstart;
sum = (unsigned int) src[0];
sum += (unsigned int) src[1];
src =
(unsigned char *) srci->currlines[ystart + 1] + xstart;
sum += (unsigned int) src[0];
sum += (unsigned int) src[1];
sum >>= 2;
}
*dest = (pixel8_t) sum;
xstart += xstep;
}
}
}
#ifdef STRUECOLOR24
static void anti24(void *data, struct taskinfo *task, int r1, int r2)
{
struct filter *f = (struct filter *) data;
struct image *srci = f->childimage, *desti = f->image;
struct antidata *s = (struct antidata *) f->data;
register unsigned char *src;
unsigned char *destend, *dest;
unsigned int ystart, y;
unsigned int xstart;
register unsigned int sum;
unsigned int xstep = ((1U << s->shift) - 1) * 3;
int c = 0;
int i;
if (!srci->palette->info.truec.byteexact) {
x_fatalerror
("Antialiasing filter:Unsupported colormask! Ask authors to add support for this :)");
}
for (i = r1; i < r2; i++) {
dest = (unsigned char *) desti->currlines[i];
destend = dest + desti->width * 3;
ystart = ((unsigned int) i) << s->shift;
xstart = 0;
c = 1;
for (; dest < destend; dest++) {
if (s->shift > 1) {
sum = 0;
for (y = 0; y < 4; y++) {
src =
(unsigned char *) srci->currlines[y + ystart] +
xstart;
sum += (unsigned int) src[0];
sum += (unsigned int) src[3];
sum += (unsigned int) src[6];
sum += (unsigned int) src[9];
}
sum >>= 4;
} else {
src = (unsigned char *) srci->currlines[ystart] + xstart;
sum = (unsigned int) src[0];
sum += (unsigned int) src[3];
src =
(unsigned char *) srci->currlines[ystart + 1] + xstart;
sum += (unsigned int) src[0];
sum += (unsigned int) src[3];
sum >>= 2;
}
*dest = (unsigned char) sum;
if (c == 3)
c = 0, xstart += xstep;
c++;
xstart++;
}
}
}
#endif
#ifdef SUPPORT16
#define MASKR1 ((unsigned int)((31+31744)+(31*65536*32)))
#define MASKR2 ((unsigned int)((31+31744)*(65536/32)+31))
#define MASKRH1 (31+31744)
#define MASKRH2 (31*32)
static void anti16(void *data, struct taskinfo *task, int r1, int r2)
{
struct filter *f = (struct filter *) data;
struct image *srci = f->childimage, *desti = f->image;
struct antidata *s = (struct antidata *) f->data;
register unsigned int *src;
unsigned short *destend, *dest;
int ystart, y;
int xstart;
register unsigned int sum1 = 0, sum2 = 0, sum;
unsigned int xstep = 1U << (s->shift - 1);
int i;
unsigned int mask1 =
(srci->palette->info.truec.
mask2 | (srci->palette->info.truec.mask1 << 16)) >> 4;
unsigned int mask2 =
srci->palette->info.truec.mask1 | (srci->palette->info.truec.
mask2 << 16);
for (i = r1; i < r2; i++) {
dest = (unsigned short *) desti->currlines[i];
destend = dest + desti->width;
ystart = ((unsigned int) i) << s->shift;
xstart = 0;
for (; dest < destend; dest++) {
if (xstep > 2) {
sum1 = sum2 = 0;
for (y = 0; y < 4; y++) {
src =
(unsigned int *) srci->currlines[y + ystart] +
xstart;
sum1 += ((unsigned int) src[0] >> 4) & mask1;
sum2 += ((unsigned int) src[0] >> 4) & mask2;
sum1 += (unsigned int) src[1] & mask1;
sum2 += (unsigned int) src[1] & mask2;
}
sum = ((sum1 >> 4) + (sum2 >> 16)) >> 4;
sum1 = (sum2 + (sum1 >> 12)) >> 4;
} else {
src = (unsigned int *) srci->currlines[ystart] + xstart;
sum1 = ((unsigned int) src[0] >> 4) & mask1;
sum2 = (unsigned int) src[0] & mask2;
src =
(unsigned int *) srci->currlines[ystart + 1] + xstart;
sum1 += ((unsigned int) src[0] >> 4) & mask1;
sum2 += (unsigned int) src[0] & mask2;
sum = ((sum1 << 4) + (sum2 >> 16)) >> 2;
sum1 = (sum2 + (sum1 >> 12)) >> 2;
}
*dest =
(sum & srci->palette->info.truec.
mask2) | (sum1 & srci->palette->info.truec.mask1);
xstart += xstep;
}
}
}
#endif
#define MASK1 0x00ff00ff
static void anti32(void *data, struct taskinfo *task, int r1, int r2)
{
struct filter *f = (struct filter *) data;
struct image *srci = f->childimage, *desti = f->image;
struct antidata *s = (struct antidata *) f->data;
register unsigned int *src;
unsigned int *destend, *dest;
unsigned int ystart, y;
unsigned int xstart;
register unsigned int sum1 = 0, sum2 = 0;
unsigned int xstep = 1U << s->shift;
int i;
if (!srci->palette->info.truec.byteexact) {
x_fatalerror
("Antialiasing filter:Unsupported colormask2! ask authors to add support for this :)");
}
for (i = r1; i < r2; i++) {
dest = (unsigned int *) desti->currlines[i];
destend = dest + desti->width;
ystart = ((unsigned int) i) << s->shift;
xstart = 0;
for (; dest < destend; dest++) {
if (xstep > 2) {
sum1 = sum2 = 0;
for (y = 0; y < 4; y++) {
src =
(unsigned int *) srci->currlines[y + ystart] +
xstart;
sum1 += (unsigned int) src[0] & MASK1;
sum2 += ((unsigned int) src[0] >> 8) & MASK1;
sum1 += (unsigned int) src[1] & MASK1;
sum2 += ((unsigned int) src[1] >> 8) & MASK1;
sum1 += (unsigned int) src[2] & MASK1;
sum2 += ((unsigned int) src[2] >> 8) & MASK1;
sum1 += (unsigned int) src[3] & MASK1;
sum2 += ((unsigned int) src[3] >> 8) & MASK1;
}
sum1 >>= 4;
sum2 >>= 4;
} else {
src = (unsigned int *) srci->currlines[ystart] + xstart;
sum1 = (unsigned int) src[0] & MASK1;
sum2 = ((unsigned int) src[0] >> 8) & MASK1;
sum1 += (unsigned int) src[1] & MASK1;
sum2 += ((unsigned int) src[1] >> 8) & MASK1;
src =
(unsigned int *) srci->currlines[ystart + 1] + xstart;
sum1 += (unsigned int) src[0] & MASK1;
sum2 += ((unsigned int) src[0] >> 8) & MASK1;
sum1 += (unsigned int) src[1] & MASK1;
sum2 += ((unsigned int) src[1] >> 8) & MASK1;
sum1 >>= 2;
sum2 >>= 2;
}
*dest = (sum1 & MASK1) | ((sum2 & MASK1) << 8);
xstart += xstep;
}
}
}
static int doit(struct filter *f, int flags, int time1)
{
int val;
updateinheredimage(f);
val = f->previous->action->doit(f->previous, flags, time1);
switch (f->image->palette->type) {
case GRAYSCALE:
xth_function(antigray, f, f->image->height);
break;
#ifdef STRUECOLOR24
case TRUECOLOR24:
xth_function(anti24, f, f->image->height);
break;
#endif
#ifdef SUPPORT16
case TRUECOLOR16:
xth_function(anti16, f, f->image->height);
break;
#endif
case TRUECOLOR:
xth_function(anti32, f, f->image->height);
break;
}
xth_sync();
return val;
}
static void convertup(struct filter *f, int *x, int *y)
{
struct antidata *s = (struct antidata *) f->data;
*x >>= s->shift;
*y >>= s->shift;
f->next->action->convertup(f->next, x, y);
}
static void convertdown(struct filter *f, int *x, int *y)
{
struct antidata *s = (struct antidata *) f->data;
*x <<= s->shift;
*y <<= s->shift;
f->previous->action->convertdown(f->previous, x, y);
}
CONST struct filteraction antialias_filter = {
"Antialiasing",
"anti",
0,
getinstance,
destroyinstance,
doit,
requirement,
initialize,
convertup,
convertdown,
NULL,
};
|
