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259 daniel-mar 1
/*
2
    This file is part of "Filter Foundry", a filter plugin for Adobe Photoshop
3
    Copyright (C) 2003-2009 Toby Thain, toby@telegraphics.com.au
4
    Copyright (C) 2018-2021 Daniel Marschall, ViaThinkSoft
5
 
6
    This program is free software; you can redistribute it and/or modify
7
    it under the terms of the GNU General Public License as published by
8
    the Free Software Foundation; either version 2 of the License, or
9
    (at your option) any later version.
10
 
11
    This program is distributed in the hope that it will be useful,
12
    but WITHOUT ANY WARRANTY; without even the implied warranty of
13
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14
    GNU General Public License for more details.
15
 
16
    You should have received a copy of the GNU General Public License
17
    along with this program; if not, write to the Free Software
18
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
19
*/
20
 
21
#ifdef MAC_ENV
268 daniel-mar 22
#include <fp.h>
259 daniel-mar 23
#endif
24
 
25
#include <math.h>
26
#include <stdlib.h>
27
 
28
#ifndef PARSERTEST
29
#include "ff.h"
30
#endif
268 daniel-mar 31
 
259 daniel-mar 32
#include "funcs.h"
33
#include "y.tab.h"
34
 
35
#include "node.h" // for symbol "var[]"
36
 
37
#define RINT //no rounding for now
38
 
39
//#if TARGET_API_MAC_CARBON
40
// this is another incompatibility between Classic stdclib and OS X stdclib
41
// ***FIXME: need to access real OS X includes for Carbon build
42
//#undef RAND_MAX
43
//#define RAND_MAX    0x7fffffff
44
//#endif
45
 
46
extern value_type slider[],cell[],var[],map[][0x100];
47
extern unsigned char *image_ptr;
48
 
49
double costab[COSTABSIZE];
50
double tantab[TANTABSIZE];
51
void init_trigtab(){
52
        int i;
53
        for(i=0;i<COSTABSIZE;++i){
54
                costab[i] = cos(FFANGLE(i));
55
        }
56
        for(i=0;i<TANTABSIZE;++i){
57
                if (i>=TANTABSIZE/2) {
58
                        /* the last '-1' in the expression '512-i-1' is for FilterFactory compatibility, and to avoid the undefined pi/2 area */
59
                        tantab[i] = -tantab[TANTABSIZE-i-1];
60
                } else {
61
                        tantab[i] = tan(FFANGLE(i));
62
                }
63
        }
64
}
65
 
66
/* Channel z for the input pixel at coordinates x,y.
67
 * Coordinates are relative to the input image data (pb->inData) */
68
static value_type rawsrc(value_type x,value_type y,value_type z){
69
        if (HAS_BIG_DOC(gpb)) {
70
                if (x < BIGDOC_IN_RECT(gpb).left)
71
                        x = BIGDOC_IN_RECT(gpb).left;
72
                else if (x >= BIGDOC_IN_RECT(gpb).right)
73
                        x = BIGDOC_IN_RECT(gpb).right - 1;
74
                if (y < BIGDOC_IN_RECT(gpb).top)
75
                        y = BIGDOC_IN_RECT(gpb).top;
76
                else if (y >= BIGDOC_IN_RECT(gpb).bottom)
77
                        y = BIGDOC_IN_RECT(gpb).bottom - 1;
78
                return ((unsigned char*)gpb->inData)[(long)gpb->inRowBytes * (y - BIGDOC_IN_RECT(gpb).top)
79
                        + (long)nplanes * (x - BIGDOC_IN_RECT(gpb).left) + z];
80
        } else {
81
                if (x < IN_RECT(gpb).left)
82
                        x = IN_RECT(gpb).left;
83
                else if (x >= IN_RECT(gpb).right)
84
                        x = IN_RECT(gpb).right - 1;
85
                if (y < IN_RECT(gpb).top)
86
                        y = IN_RECT(gpb).top;
87
                else if (y >= IN_RECT(gpb).bottom)
88
                        y = IN_RECT(gpb).bottom - 1;
89
                return ((unsigned char*)gpb->inData)[(long)gpb->inRowBytes * (y - IN_RECT(gpb).top)
90
                        + (long)nplanes * (x - IN_RECT(gpb).left) + z];
91
        }
92
}
93
 
94
/* src(x,y,z) Channel z for the pixel at coordinates x,y.
95
 * Coordinates are relative to filtered area (selection). */
96
value_type ff_src(value_type x,value_type y,value_type z){
268 daniel-mar 97
        #ifdef PARSERTEST
259 daniel-mar 98
        return 0;
268 daniel-mar 99
        #else
259 daniel-mar 100
        if(x < 0)
101
                x = 0;
102
        else if(x >= var['X'])
103
                x = var['X']-1;
104
        if(y < 0)
105
                y = 0;
106
        else if(y >= var['Y'])
107
                y = var['Y']-1;
108
        return z >= 0 && z < var['Z'] ?
109
                image_ptr[(long)gpb->inRowBytes*y + (long)nplanes*x + z] : 0;
268 daniel-mar 110
        #endif
259 daniel-mar 111
}
112
 
113
/* rad(d,m,z) Channel z in the source image, which is m units away,
114
        at an angle of d, from the center of the image */
115
value_type ff_rad(value_type d,value_type m,value_type z){
116
        return ff_src(ff_r2x(d,m) + var['X']/2, ff_r2y(d,m) + var['Y']/2, z);
117
}
118
 
119
/* ctl(i) Value of slider i, where i is an integer between 0 and 7, inclusive */
120
value_type ff_ctl(value_type i){
121
        return i>=0 && i<=7 ? slider[i] : 0;
122
}
123
 
124
/* val(i,a,b) Value of slider i, mapped onto the range a to b */
125
value_type ff_val(value_type i,value_type a,value_type b){
126
        return ((long)ff_ctl(i)*(b-a))/255 + a;
127
}
128
 
129
/* map(i,n) Item n from mapping table i, where i is an integer between
130
 
131
        inclusive */
132
value_type ff_map(value_type i,value_type n){
133
/*
134
        if( i>=0 && i<=3 && n>=0 && n<=255 ){
135
                int H = slider[i*2],L = slider[i*2+1];
136
                return n<=L || H==L ? 0 : ( n>=H ? 255 : ((n-L)*255L)/(H-L) );
137
        }else
138
                return 0;
139
*/
140
        // this code is from GIMP User Filter
141
        value_type x = ff_ctl(i*2),
142
                           y = ff_ctl(i*2+1);
143
        return abs(((long)n*(y-x) / 255)+x);
144
}
145
 
146
/* min(a,b) Lesser of a and b */
147
value_type ff_min(value_type a,value_type b){
148
        return a < b ? a : b;
149
}
150
 
151
/* max(a,b) Greater of a and b */
152
value_type ff_max(value_type a,value_type b){
153
        return a > b ? a : b;
154
}
155
 
156
/* abs(a) Absolute value of a */
157
value_type ff_abs(value_type a){
158
        return abs(a);
159
}
160
 
161
/* add(a,b,c) Sum of a and b, or c, whichever is lesser */
162
value_type ff_add(value_type a,value_type b,value_type c){
163
        return ff_min(a+b,c);
164
}
165
 
166
/* sub(a,b,c) Difference of a and b, or c, whichever is greater */
167
value_type ff_sub(value_type a,value_type b,value_type c){
168
        return ff_max(ff_dif(a,b),c);
169
}
170
 
171
/* dif(a,b) Absolute value of the difference of a and b */
172
value_type ff_dif(value_type a,value_type b){
173
        return abs(a-b);
174
}
175
 
289 daniel-mar 176
uint16_t gFactoryRndIndexCounter1 = 0;
177
uint16_t gFactoryRndIndexCounter2 = 31;
286 daniel-mar 178
uint32_t gFactoryRndLookup[56];
288 daniel-mar 179
uint32_t gFactoryRndSeed;
180
uint32_t gFactoryRndSeedSave;
286 daniel-mar 181
 
288 daniel-mar 182
void factory_fill_rnd_lookup(uint32_t seed);
286 daniel-mar 183
 
288 daniel-mar 184
uint32_t factory_rnd(uint32_t a, uint32_t b) {
289 daniel-mar 185
        uint32_t mj; // Note: This must be "uint32_t". With "long" (as described by Knuth), it won't match FilterFactory's algorithm
186
        int range;
286 daniel-mar 187
 
288 daniel-mar 188
        if (gFactoryRndSeed != gFactoryRndSeedSave) {
189
                // (Intentional) behavior of Filter Foundry
190
                factory_fill_rnd_lookup(gFactoryRndSeed);
289 daniel-mar 191
                gFactoryRndIndexCounter1 = 0;
192
                gFactoryRndIndexCounter2 = 31;
288 daniel-mar 193
        }
194
 
195
        // Algorithm of Filter Factory
289 daniel-mar 196
        // Filter Factory uses Donald E.Knuth's subtractive
197
        // random number generator algorithm ("ran3"), which has been published
198
        // in Page 283 of "The Art of Computer Programming, volume 2: Seminumerical Algorithms",
199
        // Addison-Wesley, Reading, MA, second edition, 1981.
200
        // https://www.cec.uchile.cl/cinetica/pcordero/MC_libros/NumericalRecipesinC.pdf (PDF Page 307)
288 daniel-mar 201
 
289 daniel-mar 202
        if (++gFactoryRndIndexCounter1 == 56) gFactoryRndIndexCounter1 = 1;
203
        if (++gFactoryRndIndexCounter2 == 56) gFactoryRndIndexCounter2 = 1;
286 daniel-mar 204
 
289 daniel-mar 205
        mj = gFactoryRndLookup[gFactoryRndIndexCounter1] -
206
             gFactoryRndLookup[gFactoryRndIndexCounter2];
207
        gFactoryRndLookup[gFactoryRndIndexCounter1] = mj;
286 daniel-mar 208
 
289 daniel-mar 209
        // This is Filter Factory specific:
210
        // Squeeze result into interval [a..b]
211
        if (a == 0) {
212
                // This part is optional; it is intended to increase the
213
                // performance by avoiding modulo/divide if possible.
214
                switch (b) {
215
                case 255:
216
                        return mj & 0xFF;
217
                case 127:
218
                        return mj & 0x7F;
219
                case 63:
220
                        return mj & 0x3F;
221
                case 31:
222
                        return mj & 0x1F;
223
                case 15:
224
                        return mj & 0xF;
225
                case 7:
226
                        return mj & 0x7;
227
                case 3:
228
                        return mj & 0x3;
229
                case 1:
230
                        return mj & 0x1;
231
                }
232
        }
286 daniel-mar 233
        range = b - a;
234
        if (range < 0) return 0;
289 daniel-mar 235
        return a + (mj % (range + 1));
286 daniel-mar 236
}
237
 
288 daniel-mar 238
void factory_fill_rnd_lookup(uint32_t seed) {
286 daniel-mar 239
        // Algorithm of Filter Factory
289 daniel-mar 240
        // Filter Factory uses Donald E.Knuth's subtractive
241
        // random number generator algorithm ("ran3"), which has been published
242
        // in Page 283 of "The Art of Computer Programming, volume 2: Seminumerical Algorithms",
243
        // Addison-Wesley, Reading, MA, second edition, 1981.
244
        // https://www.cec.uchile.cl/cinetica/pcordero/MC_libros/NumericalRecipesinC.pdf (PDF Page 307)
286 daniel-mar 245
 
289 daniel-mar 246
        long mj, mk;
247
        int i, ii, k;
286 daniel-mar 248
 
287 daniel-mar 249
        // 161803398 = 1.61803398 * 10^8 ~= phi * 10^8
289 daniel-mar 250
        mj = 161803398 - (seed & 0x7fff);
251
        gFactoryRndLookup[55] = mj;
286 daniel-mar 252
 
289 daniel-mar 253
        mk = 1;
254
        for (i=1; i<=54; ++i) {
255
                ii = (21 * i) % 55;
256
                gFactoryRndLookup[ii] = mk;
257
                mk = mj - mk;
258
                mj = gFactoryRndLookup[ii];
286 daniel-mar 259
        }
260
 
289 daniel-mar 261
        for (k=1; k<=4; ++k) {
262
                for (i=1; i<=55; ++i) {
263
                        gFactoryRndLookup[i] -= gFactoryRndLookup[1+(i + 30) % 55];
287 daniel-mar 264
                }
286 daniel-mar 265
        }
266
 
288 daniel-mar 267
        gFactoryRndSeedSave = seed;
268
 
286 daniel-mar 269
        return;
270
}
271
 
288 daniel-mar 272
int32_t factory_rst(uint32_t seed) {
287 daniel-mar 273
        // We implement rst(i) differently in Filter Foundry:
286 daniel-mar 274
        // Every call of rst() will renew the lookup table,
275
        // while in Filter Factory, there are strange things going
276
        // on, like only setting the state in pixel [0,0,0] and
277
        // only before rnd() is called, etc.
287 daniel-mar 278
 
288 daniel-mar 279
        gFactoryRndSeed = seed;
287 daniel-mar 280
 
281
        return 0;
286 daniel-mar 282
}
283
 
287 daniel-mar 284
void factory_initialize_rnd_variables() {
288 daniel-mar 285
        gFactoryRndSeed = 0; // default seed
286
        gFactoryRndSeedSave = gFactoryRndSeed + 1; // force rnd() to call factory_fill_rnd_lookup()
287 daniel-mar 287
}
288
 
259 daniel-mar 289
/* rnd(a,b) Random number between a and b, inclusive */
290
value_type ff_rnd(value_type a,value_type b){
286 daniel-mar 291
        return factory_rnd(a,b);
292
//      return (int)((abs(a-b)+1)*(rand()/(RAND_MAX+1.))) + ff_min(a,b);
259 daniel-mar 293
//      return ((unsigned)rand() % (ff_dif(a,b)+1)) + ff_min(a,b);
294
}
295
 
296
/* mix(a,b,n,d) Mixture of a and b by fraction n/d, a*n/d+b*(d-n)/d */
297
value_type ff_mix(value_type a,value_type b,value_type n,value_type d){
298
        return d ? ((long)a*n)/d + ((long)b*(d-n))/d : 0;
299
}
300
 
301
/* scl(a,il,ih,ol,oh) Scale a from input range (il to ih)
302
                      to output range (ol to oh) */
303
value_type ff_scl(value_type a,value_type il,value_type ih,
304
                  value_type ol,value_type oh){
305
        return ih==il ? 0 : ol + ((long)(oh-ol)*(a-il))/(ih-il);
306
}
307
 
308
static uint32_t isqrt(uint32_t x) {
309
        // based on https://gist.github.com/orlp/3481770
310
 
311
        static uint32_t lkpSquares[65535];
312
        static int lkpInitialized = 0;
313
        const uint32_t *p;
314
        int i;
315
 
316
        while (lkpInitialized == 1) { /* If other thread is currently creating the lookup table, then wait */ }
317
        if (!lkpInitialized) {
318
                lkpInitialized = 1;
319
                for (i = 0; i < 65535; ++i) {
320
                        lkpSquares[i] = i * i;
321
                }
322
                lkpInitialized = 2;
323
        }
324
 
325
        p = lkpSquares;
326
 
327
        if (p[32768] <= x) p += 32768;
328
        if (p[16384] <= x) p += 16384;
329
        if (p[8192] <= x) p += 8192;
330
        if (p[4096] <= x) p += 4096;
331
        if (p[2048] <= x) p += 2048;
332
        if (p[1024] <= x) p += 1024;
333
        if (p[512] <= x) p += 512;
334
        if (p[256] <= x) p += 256;
335
        if (p[128] <= x) p += 128;
336
        if (p[64] <= x) p += 64;
337
        if (p[32] <= x) p += 32;
338
        if (p[16] <= x) p += 16;
339
        if (p[8] <= x) p += 8;
340
        if (p[4] <= x) p += 4;
341
        if (p[2] <= x) p += 2;
342
        if (p[1] <= x) p += 1;
343
 
344
        return (uint32_t)(p - lkpSquares);
345
}
346
 
347
/* sqr(x) Square root of x */
348
value_type ff_sqr(value_type x){
349
        return x < 0 ? 0 : isqrt(x);
350
}
351
 
352
/* sin(x) Sine function of x, where x is an integer between 0 and
353
   1024, inclusive, and the value returned is an integer
354
   between -512 and 512, inclusive (Windows) or -1024 and
355
   1024, inclusive (Mac OS) */
356
value_type ff_sin(value_type x){
357
        //return RINT(TRIGAMP*sin(FFANGLE(x)));
358
        return ff_cos(x-256);
359
}
360
 
361
/* cos(x) Cosine function of x, where x is an integer between 0 and
362
   1024, inclusive, and the value returned is an integer
363
   between -512 and 512, inclusive (Windows) or -1024 and
364
   1024, inclusive (Mac OS) */
365
value_type ff_cos(value_type x){
366
        //return RINT(TRIGAMP*cos(FFANGLE(x)));
367
        return (value_type)RINT(TRIGAMP*costab[abs(x) % COSTABSIZE]);
368
}
369
 
370
/* tan(x) Tangent function of x, where x is an integer
371
   between -256 and 256, inclusive. Althought the Filter Factory manual
372
   stated that the return value is bounded to -512 and 512, inclusive (Windows) or
373
   -1024 and 1024, inclusive (Mac OS), the output is actually NOT bounded! */
374
value_type ff_tan(value_type x){
375
        // Following filter shows that the Filter Factory manual differs from the implementation.
376
        //         R = cos(x) > 1024 || cos(x) < -1024 || cos(-x) > 1024 || cos(-x) < -1024 ? 255 : 0
377
        //     G = tan(x) > 1024 || tan(x) < -1024 || tan(-x) > 1024 || tan(-x) < -1024 ? 255 : 0
378
        //     B = sin(x) > 1024 || sin(x) < -1024 || sin(-x) > 1024 || sin(-x) < -1024 ? 255 : 0
379
        // It outputs green stripes, showing that the output of tan() is not bounded.
380
        // So, we do it the same way to stay compatible.
381
        if (x < 0) x--; /* required for Filter Factory compatibility */
382
        while (x < 0) x += TANTABSIZE;
383
        return (value_type)RINT(2*TRIGAMP*tantab[x % TANTABSIZE]); // We need the x2 multiplicator for some reason
384
}
385
 
386
/* r2x(d,m) x displacement of the pixel m units away, at an angle of d,
387
   from an arbitrary center */
388
value_type ff_r2x(value_type d,value_type m){
389
        return (value_type)RINT(m*costab[abs(d) % COSTABSIZE]);
390
}
391
 
392
/* r2y(d,m) y displacement of the pixel m units away, at an angle of d,
393
   from an arbitrary center */
394
value_type ff_r2y(value_type d,value_type m){
395
        return (value_type)RINT(m*costab[abs(d-256) % COSTABSIZE]);
396
}
397
 
398
/* Attention! This is NOT a function. It is internally used to calculate the variable "d". */
399
value_type ff_c2d_negated(value_type x, value_type y) {
400
        // NOTE: FilterFactory uses c2d(x,y):=atan2(y,x), but d:=atan2(-y,-x)
401
        // Due to compatibility reasons, we implement it the same way!
402
        // Sign of y difference is negated, as we are dealing with top-down coordinates angle is "observed"
403
        return (value_type)RINT(TO_FFANGLE(atan2(-y,-x)));
404
}
405
 
406
/* c2d(x,y) Angle displacement of the pixel at coordinates x,y */
407
value_type ff_c2d(value_type x,value_type y){
408
        // Behavior of FilterFoundry <1.7:
409
        //return ff_c2d_negated(x,y);
410
 
411
        // Behavior in FilterFoundry 1.7+: Matches FilterFactory
412
        return (value_type)RINT(TO_FFANGLE(atan2(y,x)));
413
}
414
 
415
/* c2m(x,y) Magnitude displacement of the pixel at coordinates x,y */
416
value_type ff_c2m(value_type x,value_type y){
417
        return isqrt((long)x*x + (long)y*y);
418
}
419
 
420
/* get(i) Returns the current cell value at i */
421
value_type ff_get(value_type i){
422
        // Filter Factory:
423
        //return i>=0 && i<NUM_CELLS ? cell[i] : i;
424
 
425
        // Filter Foundry:
426
        return i>=0 && i<NUM_CELLS ? cell[i] : 0;
427
}
428
 
429
/* put(v,i) Puts the new value v into cell i */
430
value_type ff_put(value_type v,value_type i){
431
        if(i>=0 && i<NUM_CELLS)
432
                cell[i] = v;
433
        return v;
434
}
435
 
436
/* Convolve. Applies a convolution matrix and divides with d. */
437
value_type ff_cnv(value_type m11,value_type m12,value_type m13,
438
                                  value_type m21,value_type m22,value_type m23,
439
                                  value_type m31,value_type m32,value_type m33,
440
                                  value_type d)
441
{
268 daniel-mar 442
        #ifdef PARSERTEST
259 daniel-mar 443
        return 0;
268 daniel-mar 444
        #else
259 daniel-mar 445
        long total;
446
        int x, y, z;
447
        // shift x,y from selection-relative to image relative
448
        if (HAS_BIG_DOC(gpb)) {
449
                x = var['x'] + BIGDOC_FILTER_RECT(gpb).left;
450
                y = var['y'] + BIGDOC_FILTER_RECT(gpb).top;
451
        } else {
452
                x = var['x'] + FILTER_RECT(gpb).left;
453
                y = var['y'] + FILTER_RECT(gpb).top;
454
        }
455
        z = var['z'];
456
 
457
        if(z >= 0 && z < var['Z'])
458
                total = m11*rawsrc(x-1,y-1,z) + m12*rawsrc(x,y-1,z) + m13*rawsrc(x+1,y-1,z)
459
                          + m21*rawsrc(x-1,y,  z) + m22*rawsrc(x,y,  z) + m23*rawsrc(x+1,y,  z)
460
                          + m31*rawsrc(x-1,y+1,z) + m32*rawsrc(x,y+1,z) + m33*rawsrc(x+1,y+1,z);
461
        else
462
                total = 0;
463
 
464
        return d ? total/d : 0;
268 daniel-mar 465
        #endif
259 daniel-mar 466
}
467
 
468
/* rst(i) sets a random seed and returns 0. (undocumented Filter Factory function).
469
   Added by DM, 18 Dec 2018 */
470
value_type ff_rst(value_type seed){
286 daniel-mar 471
        factory_rst(seed);
472
//      srand(seed);
259 daniel-mar 473
        return 0;
474
}
475
 
476
value_type zero_val = 0;
477
value_type one_val = 1;
478
value_type max_channel_val = 255;
479
 
480
/* predefined symbols */
481
struct sym_rec predefs[]={
482
        /* functions */
483
 
484
        {0,TOK_FN3,"src", (pfunc_type)ff_src, 0},
485
        {0,TOK_FN3,"rad", (pfunc_type)ff_rad, 0},
486
        {0,TOK_FN1,"ctl", (pfunc_type)ff_ctl, 0},
487
        {0,TOK_FN3,"val", (pfunc_type)ff_val, 0},
488
        {0,TOK_FN2,"map", (pfunc_type)ff_map, 0},
489
        {0,TOK_FN2,"min", (pfunc_type)ff_min, 0},
490
        {0,TOK_FN2,"max", (pfunc_type)ff_max, 0},
491
        {0,TOK_FN1,"abs", (pfunc_type)ff_abs, 0},
492
        {0,TOK_FN3,"add", (pfunc_type)ff_add, 0},
493
        {0,TOK_FN3,"sub", (pfunc_type)ff_sub, 0},
494
        {0,TOK_FN2,"dif", (pfunc_type)ff_dif, 0},
495
        {0,TOK_FN2,"rnd", (pfunc_type)ff_rnd, 0},
496
        {0,TOK_FN4,"mix", (pfunc_type)ff_mix, 0},
497
        {0,TOK_FN5,"scl", (pfunc_type)ff_scl, 0},
498
        {0,TOK_FN1,"sqr", (pfunc_type)ff_sqr, 0},
499
        {0,TOK_FN1,"sqrt", (pfunc_type)ff_sqr, 0}, // sqrt() is synonym to sqr() in Premiere
500
        {0,TOK_FN1,"sin", (pfunc_type)ff_sin, 0},
501
        {0,TOK_FN1,"cos", (pfunc_type)ff_cos, 0},
502
        {0,TOK_FN1,"tan", (pfunc_type)ff_tan, 0},
503
        {0,TOK_FN2,"r2x", (pfunc_type)ff_r2x, 0},
504
        {0,TOK_FN2,"r2y", (pfunc_type)ff_r2y, 0},
505
        {0,TOK_FN2,"c2d", (pfunc_type)ff_c2d, 0},
506
        {0,TOK_FN2,"c2m", (pfunc_type)ff_c2m, 0},
507
        {0,TOK_FN1,"get", (pfunc_type)ff_get, 0},
508
        {0,TOK_FN2,"put", (pfunc_type)ff_put, 0},
509
        {0,TOK_FN10,"cnv",(pfunc_type)ff_cnv, 0},
510
        {0,TOK_FN1,"rst", (pfunc_type)ff_rst, 0}, // undocumented FilterFactory function
511
 
512
        /* predefined variables (names with more than 1 character); most of them are undocumented in FilterFactory */
513
        /* the predefined variables with 1 character are defined in lexer.l and process.c */
514
        /* in this table, you must not add TOK_VAR with only 1 character (since this case is not defined in parser.y) */
515
 
516
        {0,TOK_VAR,"rmax",0, &max_channel_val}, // alias of 'R' (defined in lexer.l, line 129)
517
        {0,TOK_VAR,"gmax",0, &max_channel_val}, // alias of 'G' (defined in lexer.l, line 129)
518
        {0,TOK_VAR,"bmax",0, &max_channel_val}, // alias of 'B' (defined in lexer.l, line 129)
519
        {0,TOK_VAR,"amax",0, &max_channel_val}, // alias of 'A' (defined in lexer.l, line 129)
520
        {0,TOK_VAR,"cmax",0, &max_channel_val}, // alias of 'C' (defined in lexer.l, line 129)
521
        {0,TOK_VAR,"imax",0, &max_channel_val}, // alias of 'I' (defined in lexer.l, line 129)
522
        {0,TOK_VAR,"umax",0, &max_channel_val}, // alias of 'U' (defined in lexer.l, line 129)
523
        {0,TOK_VAR,"vmax",0, &max_channel_val}, // alias of 'V' (defined in lexer.l, line 129)
524
        {0,TOK_VAR,"dmax",0, &var['D']},
525
        {0,TOK_VAR,"mmax",0, &var['M']},
526
        {0,TOK_VAR,"pmax",0, &var['Z']},
527
        {0,TOK_VAR,"xmax",0, &var['X']},
528
        {0,TOK_VAR,"ymax",0, &var['Y']},
529
        {0,TOK_VAR,"zmax",0, &var['Z']},
530
 
531
        {0,TOK_VAR,"rmin",0, &zero_val},
532
        {0,TOK_VAR,"gmin",0, &zero_val},
533
        {0,TOK_VAR,"bmin",0, &zero_val},
534
        {0,TOK_VAR,"amin",0, &zero_val},
535
        {0,TOK_VAR,"cmin",0, &zero_val},
536
        {0,TOK_VAR,"imin",0, &zero_val},
537
        {0,TOK_VAR,"umin",0, &zero_val},
538
        {0,TOK_VAR,"vmin",0, &zero_val},
539
        {0,TOK_VAR,"dmin",0, &zero_val},
540
        {0,TOK_VAR,"mmin",0, &zero_val},
541
        {0,TOK_VAR,"pmin",0, &zero_val},
542
        {0,TOK_VAR,"xmin",0, &zero_val},
543
        {0,TOK_VAR,"ymin",0, &zero_val},
544
        {0,TOK_VAR,"zmin",0, &zero_val},
545
 
546
        /* Undocumented synonyms of FilterFactory for compatibility with Premiere */
547
        {0,TOK_FN10,"cnv0",(pfunc_type)ff_cnv, 0},
548
        {0,TOK_FN3,"src0", (pfunc_type)ff_src, 0},
549
        {0,TOK_FN3,"rad0", (pfunc_type)ff_rad, 0},
550
        {0,TOK_FN10,"cnv1",(pfunc_type)ff_cnv, 0},
551
        {0,TOK_FN3,"src1", (pfunc_type)ff_src, 0},
552
        {0,TOK_FN3,"rad1", (pfunc_type)ff_rad, 0},
553
        {0,TOK_VAR,"r0",0, &var['r']},
554
        {0,TOK_VAR,"g0",0, &var['g']},
555
        {0,TOK_VAR,"b0",0, &var['b']},
556
        {0,TOK_VAR,"a0",0, &var['a']},
557
        {0,TOK_VAR,"c0",0, &var['c']},
558
        {0,TOK_VAR,"i0",0, &var['i']},
559
        {0,TOK_VAR,"u0",0, &var['u']},
560
        {0,TOK_VAR,"v0",0, &var['v']},
561
        {0,TOK_VAR,"d0",0, &var['d']},
562
        {0,TOK_VAR,"m0",0, &var['m']},
563
        {0,TOK_VAR,"r1",0, &var['r']},
564
        {0,TOK_VAR,"g1",0, &var['g']},
565
        {0,TOK_VAR,"b1",0, &var['b']},
566
        {0,TOK_VAR,"a1",0, &var['a']},
567
        {0,TOK_VAR,"c1",0, &var['c']},
568
        {0,TOK_VAR,"i1",0, &var['i']},
569
        {0,TOK_VAR,"u1",0, &var['u']},
570
        {0,TOK_VAR,"v1",0, &var['v']},
571
        {0,TOK_VAR,"d1",0, &var['d']},
572
        {0,TOK_VAR,"m1",0, &var['m']},
573
        {0,TOK_VAR,"tmin",0, &zero_val},
574
        {0,TOK_VAR,"tmax",0, &one_val},
575
        {0,TOK_VAR,"total",0, &one_val},
576
 
577
        {0,0,0,0,0}
578
};