1 // --- CHUI EN TRAIN DE SUPPRIMER LES EXTERN RESOLX ET C_RESOLY ---
3 /* filter.c version 0.7
4 * contient les filtres applicable a un buffer
5 * creation : 01/10/2000
6 * -ajout de sinFilter()
7 * -ajout de zoomFilter()
8 * -copie de zoomFilter() en zoomFilterRGB(), gerant les 3 couleurs
9 * -optimisation de sinFilter (utilisant une table de sin)
11 * -optimisation de la procedure de generation du buffer de transformation
12 * la vitesse est maintenant comprise dans [0..128] au lieu de [0..100]
15 /* #define _DEBUG_PIXEL */
23 #include "goom_filters.h"
24 #include "goom_graphic.h"
25 #include "goom_tools.h"
26 #include "goom_plugin_info.h"
30 /* TODO : MOVE THIS AWAY !!! */
31 /* jeko: j'ai essayer de le virer, mais si on veut les laisser inline c'est un peu lourdo... */
33 setPixelRGB (PluginInfo * goomInfo, Pixel * buffer, Uint x, Uint y, Color c)
40 *(buffer + (x + y * goomInfo->screen.width)) = i;
44 setPixelRGB_ (Pixel * buffer, Uint x, Color c)
46 buffer[x].channels.r = c.r;
47 buffer[x].channels.g = c.v;
48 buffer[x].channels.b = c.b;
52 getPixelRGB (PluginInfo * goomInfo, Pixel * buffer, Uint x, Uint y, Color * c)
54 Pixel i = *(buffer + (x + y * goomInfo->screen.width));
62 getPixelRGB_ (Pixel * buffer, Uint x, Color * c)
64 Pixel i = *(buffer + x);
75 // retourne x>>s , en testant le signe de x
76 //#define ShiftRight(_x,_s) (((_x)<0) ? -(-(_x)>>(_s)) : ((_x)>>(_s)))
77 //#define EFFECT_DISTORS 4
78 //#define EFFECT_DISTORS_SL 2
79 //#define INTERLACE_ADD 9
80 //#define INTERLACE_AND 0xf
83 #define BUFFPOINTNB 16
84 #define BUFFPOINTNBF 16.0f
85 #define BUFFPOINTMASK 0xffff
88 /* faire : a % sqrtperte <=> a & pertemask */
90 /* faire : a / sqrtperte <=> a >> PERTEDEC */
93 /* pure c version of the zoom filter */
94 static void c_zoom (Pixel * expix1, Pixel * expix2, unsigned int prevX,
95 unsigned int prevY, signed int *brutS, signed int *brutD, int buffratio,
96 int precalCoef[BUFFPOINTNB][BUFFPOINTNB]);
98 /* simple wrapper to give it the same proto than the others */
100 zoom_filter_c (int sizeX, int sizeY, Pixel * src, Pixel * dest, int *brutS,
101 int *brutD, int buffratio, int precalCoef[16][16])
103 c_zoom (src, dest, sizeX, sizeY, brutS, brutD, buffratio, precalCoef);
106 static void generatePrecalCoef (int precalCoef[BUFFPOINTNB][BUFFPOINTNB]);
109 typedef struct _ZOOM_FILTER_FX_WRAPPER_DATA
112 PluginParam enabled_bp;
113 PluginParameters params;
115 unsigned int *coeffs, *freecoeffs;
117 signed int *brutS, *freebrutS; /* source */
118 signed int *brutD, *freebrutD; /* dest */
119 signed int *brutT, *freebrutT; /* temp (en cours de generation) */
123 unsigned int prevX, prevY;
126 int reverse; /* reverse the speed */
133 int middleX, middleY;
138 /** modif by jeko : fixedpoint : buffration = (16:16) (donc 0<=buffration<=2^16) */
142 /** modif d'optim by Jeko : precalcul des 4 coefs resultant des 2 pos */
143 int precalCoef[BUFFPOINTNB][BUFFPOINTNB];
145 /** calculatePXandPY statics */
149 } ZoomFilterFXWrapperData;
155 zoomVector (ZoomFilterFXWrapperData * data, float X, float Y)
159 float sq_dist = X * X + Y * Y;
161 /* sx = (X < 0.0f) ? -1.0f : 1.0f;
162 sy = (Y < 0.0f) ? -1.0f : 1.0f;
164 float coefVitesse = (1.0f + data->general_speed) / 50.0f;
170 switch (data->theMode) {
171 case CRYSTAL_BALL_MODE:
172 coefVitesse -= (sq_dist - 0.3f) / 15.0f;
175 coefVitesse += sq_dist * 3.5f;
178 coefVitesse += sin (sq_dist * 20.0f) / 100.0f;
181 coefVitesse += sq_dist / 10.0f;
183 //case HYPERCOS1_MODE:
185 //case HYPERCOS2_MODE:
190 coefVitesse *= 4.0f * Y;
196 if (coefVitesse < -2.01f)
197 coefVitesse = -2.01f;
198 if (coefVitesse > 2.01f)
201 vx = coefVitesse * X;
202 vy = coefVitesse * Y;
205 // vx = X * tan(dist);
206 // vy = Y * tan(dist);
217 vx += (((float) random ()) / ((float) RAND_MAX) - 0.5f) / 50.0f;
218 vy += (((float) random ()) / ((float) RAND_MAX) - 0.5f) / 50.0f;
222 if (data->hypercosEffect) {
223 vx += sin (Y * 10.0f) / 120.0f;
224 vy += sin (X * 10.0f) / 120.0f;
228 if (data->hPlaneEffect)
229 vx += Y * 0.0025f * data->hPlaneEffect;
232 if (data->vPlaneEffect)
233 vy += X * 0.0025f * data->vPlaneEffect;
235 /* TODO : Water Mode */
236 // if (data->waveEffect)
246 * Makes a stripe of a transform buffer (brutT)
248 * The transform is (in order) :
249 * Translation (-data->middleX, -data->middleY)
250 * Homothetie (Center : 0,0 Coeff : 2/data->prevX)
253 makeZoomBufferStripe (ZoomFilterFXWrapperData * data, int INTERLACE_INCR)
255 // Position of the pixel to compute in pixmap coordinates
258 // Where (verticaly) to stop generating the buffer stripe
259 int maxEnd = (data->interlace_start + INTERLACE_INCR);
261 // Ratio from pixmap to normalized coordinates
262 float ratio = 2.0f / ((float) data->prevX);
264 // Ratio from normalized to virtual pixmap coordinates
265 float inv_ratio = BUFFPOINTNBF / ratio;
266 float min = ratio / BUFFPOINTNBF;
268 // Y position of the pixel to compute in normalized coordinates
269 float Y = ((float) (data->interlace_start - data->middleY)) * ratio;
271 maxEnd = data->prevY;
272 if (maxEnd > (data->interlace_start + INTERLACE_INCR))
273 maxEnd = (data->interlace_start + INTERLACE_INCR);
275 for (y = data->interlace_start;
276 (y < data->prevY) && ((signed int) y < maxEnd); y++) {
277 Uint premul_y_prevX = y * data->prevX * 2;
278 float X = -((float) data->middleX) * ratio;
280 for (x = 0; x < data->prevX; x++) {
281 v2g vector = zoomVector (data, X, Y);
283 /* Finish and avoid null displacement */
284 if (fabs (vector.x) < min)
285 vector.x = (vector.x < 0.0f) ? -min : min;
286 if (fabs (vector.y) < min)
287 vector.y = (vector.y < 0.0f) ? -min : min;
289 data->brutT[premul_y_prevX] =
290 ((int) ((X - vector.x) * inv_ratio) +
291 ((int) (data->middleX * BUFFPOINTNB)));
292 data->brutT[premul_y_prevX + 1] =
293 ((int) ((Y - vector.y) * inv_ratio) +
294 ((int) (data->middleY * BUFFPOINTNB)));
300 data->interlace_start += INTERLACE_INCR;
301 if (y >= data->prevY - 1)
302 data->interlace_start = -1;
307 * calculer px et py en fonction de x,y,middleX,middleY et theMode
308 * px et py indique la nouvelle position (en sqrtperte ieme de pixel)
311 inline void calculatePXandPY (PluginInfo *goomInfo, ZoomFilterFXWrapperData *data, int x, int y, int *px, int *py)
313 if (data->theMode == WATER_MODE) {
316 yy = y + goom_irand(goomInfo->gRandom, 4) - goom_irand(goomInfo->gRandom, 4) + data->wave / 10;
319 if (yy >= (signed int)goomInfo->screen.height)
320 yy = goomInfo->screen.height - 1;
322 *px = (x << 4) + data->firedec[yy] + (data->wave / 10);
323 *py = (y << 4) + 132 - ((data->vitesse < 131) ? data->vitesse : 130);
325 data->wavesp += goom_irand(goomInfo->gRandom, 3) - goom_irand(goomInfo->gRandom, 3);
326 if (data->wave < -10)
330 data->wave += (data->wavesp / 10) + goom_irand(goomInfo->gRandom, 3) - goom_irand(goomInfo->gRandom, 3);
331 if (data->wavesp > 100)
332 data->wavesp = (data->wavesp * 9) / 10;
335 int dist = 0, vx9, vy9;
338 int fvitesse = data->vitesse << 4;
341 x += goom_irand(goomInfo->gRandom, data->noisify) - goom_irand(goomInfo->gRandom, data->noisify);
342 y += goom_irand(goomInfo->gRandom, data->noisify) - goom_irand(goomInfo->gRandom, data->noisify);
344 vx = (x - data->middleX) << 9;
345 vy = (y - data->middleY) << 9;
347 if (data->hPlaneEffect)
348 vx += data->hPlaneEffect * (y - data->middleY);
350 if (data->vPlaneEffect)
351 vy += data->vPlaneEffect * (x - data->middleX);
353 if (data->waveEffect) {
356 ShiftRight (goomInfo->sintable
357 [(unsigned short) (dist * 0xffff + EFFECT_DISTORS)], 6);
361 if (data->hypercosEffect) {
362 vx += ShiftRight (goomInfo->sintable[(-vy + dist) & 0xffff], 1);
363 vy += ShiftRight (goomInfo->sintable[(vx + dist) & 0xffff], 1);
366 vx9 = ShiftRight (vx, 9);
367 vy9 = ShiftRight (vy, 9);
368 dist = vx9 * vx9 + vy9 * vy9;
370 switch (data->theMode) {
374 ShiftRight (goomInfo->sintable
375 [(unsigned short) (dist * 0xffff * EFFECT_DISTORS)], 6);
378 case CRYSTAL_BALL_MODE:
379 fvitesse += (dist >> (10-EFFECT_DISTORS_SL));
382 fvitesse -= (dist >> (4 - EFFECT_DISTORS_SL));
385 fvitesse -= (dist >> (10 - EFFECT_DISTORS_SL));
388 vx = vx + ShiftRight (goomInfo->sintable[(-vy + dist) & 0xffff], 1);
389 vy = vy + ShiftRight (goomInfo->sintable[(vx + dist) & 0xffff], 1);
393 vx + ShiftRight (goomInfo->sintable[(-ShiftRight (vy, 1) + dist) & 0xffff], 0);
395 vy + ShiftRight (goomInfo->sintable[(ShiftRight (vx, 1) + dist) & 0xffff], 0);
399 fvitesse *= 1024 + ShiftRight (goomInfo->sintable[vy & 0xffff], 6);
403 fvitesse -= (ShiftRight(vy,10-EFFECT_DISTORS_SL));
407 if (fvitesse < -3024)
410 if (vx < 0) // pb avec decalage sur nb negatif
411 ppx = -(-(vx * fvitesse) >> 16);
412 // 16 = 9 + 7 (7 = nb chiffre virgule de vitesse * (v = 128 => immobile)
413 // * * * * * 9 = nb chiffre virgule de vx)
415 ppx = ((vx * fvitesse) >> 16);
418 ppy = -(-(vy * fvitesse) >> 16);
420 ppy = ((vy * fvitesse) >> 16);
422 *px = (data->middleX << 4) + ppx;
423 *py = (data->middleY << 4) + ppy;
431 c_zoom (Pixel * expix1, Pixel * expix2, unsigned int prevX, unsigned int prevY,
432 signed int *brutS, signed int *brutD, int buffratio, int precalCoef[16][16])
437 unsigned int ax = (prevX - 1) << PERTEDEC, ay = (prevY - 1) << PERTEDEC;
439 int bufsize = prevX * prevY * 2;
440 int bufwidth = prevX;
442 expix1[0].val = expix1[prevX - 1].val = expix1[prevX * prevY - 1].val =
443 expix1[prevX * prevY - prevX].val = 0;
445 for (myPos = 0; myPos < bufsize; myPos += 2) {
446 Color col1, col2, col3, col4;
447 int c1, c2, c3, c4, px, py;
451 int brutSmypos = brutS[myPos];
455 px = brutSmypos + (((brutD[myPos] -
456 brutSmypos) * buffratio) >> BUFFPOINTNB);
457 brutSmypos = brutS[myPos2];
458 py = brutSmypos + (((brutD[myPos2] -
459 brutSmypos) * buffratio) >> BUFFPOINTNB);
461 if ((py >= ay) || (px >= ax)) {
464 pos = ((px >> PERTEDEC) + prevX * (py >> PERTEDEC));
465 /* coef en modulo 15 */
466 coeffs = precalCoef[px & PERTEMASK][py & PERTEMASK];
468 getPixelRGB_ (expix1, pos, &col1);
469 getPixelRGB_ (expix1, pos + 1, &col2);
470 getPixelRGB_ (expix1, pos + bufwidth, &col3);
471 getPixelRGB_ (expix1, pos + bufwidth + 1, &col4);
474 c2 = (c1 >> 8) & 0xFF;
475 c3 = (c1 >> 16) & 0xFF;
476 c4 = (c1 >> 24) & 0xFF;
479 couleur.r = col1.r * c1 + col2.r * c2 + col3.r * c3 + col4.r * c4;
484 couleur.v = col1.v * c1 + col2.v * c2 + col3.v * c3 + col4.v * c4;
489 couleur.b = col1.b * c1 + col2.b * c2 + col3.b * c3 + col4.b * c4;
494 setPixelRGB_ (expix2, myPos >> 1, couleur);
498 /** generate the water fx horizontal direction buffer */
500 generateTheWaterFXHorizontalDirectionBuffer (PluginInfo * goomInfo,
501 ZoomFilterFXWrapperData * data)
505 int decc = goom_irand (goomInfo->gRandom, 8) - 4;
506 int spdc = goom_irand (goomInfo->gRandom, 8) - 4;
507 int accel = goom_irand (goomInfo->gRandom, 8) - 4;
509 for (loopv = data->prevY; loopv != 0;) {
512 data->firedec[loopv] = decc;
515 goom_irand (goomInfo->gRandom, 3) - goom_irand (goomInfo->gRandom, 3);
523 spdc = spdc - goom_irand (goomInfo->gRandom, 3) + accel / 10;
525 spdc = spdc + goom_irand (goomInfo->gRandom, 3) + accel / 10;
527 if (decc > 8 && spdc > 1)
528 spdc -= goom_irand (goomInfo->gRandom, 3) - 2;
530 if (decc < -8 && spdc < -1)
531 spdc += goom_irand (goomInfo->gRandom, 3) + 2;
533 if (decc > 8 || decc < -8)
537 goom_irand (goomInfo->gRandom, 2) - goom_irand (goomInfo->gRandom, 2);
548 * Main work for the dynamic displacement map.
550 * Reads data from pix1, write to pix2.
552 * Useful datas for this FX are stored in ZoomFilterData.
554 * If you think that this is a strange function name, let me say that a long time ago,
555 * there has been a slow version and a gray-level only one. Then came these function,
556 * fast and workin in RGB colorspace ! nice but it only was applying a zoom to the image.
557 * So that is why you have this name, for the nostalgy of the first days of goom
558 * when it was just a tiny program writen in Turbo Pascal on my i486...
561 zoomFilterFastRGB (PluginInfo * goomInfo, Pixel * pix1, Pixel * pix2,
562 ZoomFilterData * zf, Uint resx, Uint resy, int switchIncr, float switchMult)
566 ZoomFilterFXWrapperData *data =
567 (ZoomFilterFXWrapperData *) goomInfo->zoomFilter_fx.fx_data;
569 if (!BVAL (data->enabled_bp))
572 /** changement de taille **/
573 if ((data->prevX != resx) || (data->prevY != resy)) {
578 free (data->freebrutS);
581 free (data->freebrutD);
584 free (data->freebrutT);
587 data->middleX = resx / 2;
588 data->middleY = resy / 2;
589 data->mustInitBuffers = 1;
591 free (data->firedec);
595 if (data->interlace_start != -2)
598 /** changement de config **/
600 data->reverse = zf->reverse;
601 data->general_speed = (float) (zf->vitesse - 128) / 128.0f;
603 data->general_speed = -data->general_speed;
604 data->middleX = zf->middleX;
605 data->middleY = zf->middleY;
606 data->theMode = zf->mode;
607 data->hPlaneEffect = zf->hPlaneEffect;
608 data->vPlaneEffect = zf->vPlaneEffect;
609 data->waveEffect = zf->waveEffect;
610 data->hypercosEffect = zf->hypercosEffect;
611 data->noisify = zf->noisify;
612 data->interlace_start = 0;
616 if (data->mustInitBuffers) {
618 data->mustInitBuffers = 0;
620 (signed int *) calloc (resx * resy * 2 + 128, sizeof (unsigned int));
622 (gint32 *) ((1 + ((uintptr_t) (data->freebrutS)) / 128) * 128);
625 (signed int *) calloc (resx * resy * 2 + 128, sizeof (unsigned int));
627 (gint32 *) ((1 + ((uintptr_t) (data->freebrutD)) / 128) * 128);
630 (signed int *) calloc (resx * resy * 2 + 128, sizeof (unsigned int));
632 (gint32 *) ((1 + ((uintptr_t) (data->freebrutT)) / 128) * 128);
636 data->firedec = (int *) malloc (data->prevY * sizeof (int));
637 generateTheWaterFXHorizontalDirectionBuffer (goomInfo, data);
639 data->interlace_start = 0;
640 makeZoomBufferStripe (data, resy);
642 /* Copy the data from temp to dest and source */
643 memcpy (data->brutS, data->brutT, resx * resy * 2 * sizeof (int));
644 memcpy (data->brutD, data->brutT, resx * resy * 2 * sizeof (int));
647 /* generation du buffer de trans */
648 if (data->interlace_start == -1) {
650 /* sauvegarde de l'etat actuel dans la nouvelle source
651 * TODO: write that in MMX (has been done in previous version, but did not follow some new fonctionnalities) */
652 y = data->prevX * data->prevY * 2;
653 for (x = 0; x < y; x += 2) {
654 int brutSmypos = data->brutS[x];
658 brutSmypos + (((data->brutD[x] -
659 brutSmypos) * data->buffratio) >> BUFFPOINTNB);
660 brutSmypos = data->brutS[x2];
662 brutSmypos + (((data->brutD[x2] -
663 brutSmypos) * data->buffratio) >> BUFFPOINTNB);
668 if (data->interlace_start == -1) {
672 data->brutD = data->brutT;
674 tmp = data->freebrutD;
675 data->freebrutD = data->freebrutT;
676 data->freebrutT = tmp;
677 data->interlace_start = -2;
680 if (data->interlace_start >= 0) {
681 /* creation de la nouvelle destination */
682 makeZoomBufferStripe (data, resy / 16);
685 if (switchIncr != 0) {
686 data->buffratio += switchIncr;
687 if (data->buffratio > BUFFPOINTMASK)
688 data->buffratio = BUFFPOINTMASK;
691 if (switchMult != 1.0f) {
692 data->buffratio = (int) ((float) BUFFPOINTMASK * (1.0f - switchMult) +
693 (float) data->buffratio * switchMult);
696 data->zoom_width = data->prevX;
698 goomInfo->methods.zoom_filter (data->prevX, data->prevY, pix1, pix2,
699 data->brutS, data->brutD, data->buffratio, data->precalCoef);
703 generatePrecalCoef (int precalCoef[16][16])
707 for (coefh = 0; coefh < 16; coefh++) {
708 for (coefv = 0; coefv < 16; coefv++) {
714 diffcoeffh = sqrtperte - coefh;
715 diffcoeffv = sqrtperte - coefv;
717 if (!(coefh || coefv)) {
722 i1 = diffcoeffh * diffcoeffv;
723 i2 = coefh * diffcoeffv;
724 i3 = diffcoeffh * coefv;
727 // TODO: faire mieux...
737 i = (i1) | (i2 << 8) | (i3 << 16) | (i4 << 24);
739 precalCoef[coefh][coefv] = i;
744 /* VisualFX Wrapper */
747 zoomFilterVisualFXWrapper_init (struct _VISUAL_FX *_this, PluginInfo * info)
749 ZoomFilterFXWrapperData *data =
750 (ZoomFilterFXWrapperData *) malloc (sizeof (ZoomFilterFXWrapperData));
753 data->freecoeffs = 0;
763 data->mustInitBuffers = 1;
764 data->interlace_start = -2;
766 data->general_speed = 0.0f;
768 data->theMode = AMULETTE_MODE;
769 data->waveEffect = 0;
770 data->hypercosEffect = 0;
771 data->vPlaneEffect = 0;
772 data->hPlaneEffect = 0;
775 /** modif by jeko : fixedpoint : buffration = (16:16) (donc 0<=buffration<=2^16) */
779 data->wave = data->wavesp = 0;
781 data->enabled_bp = secure_b_param ("Enabled", 1);
783 data->params = plugin_parameters ("Zoom Filter", 1);
784 data->params.params[0] = &data->enabled_bp;
786 _this->params = &data->params;
787 _this->fx_data = (void *) data;
789 /** modif d'optim by Jeko : precalcul des 4 coefs resultant des 2 pos */
790 generatePrecalCoef (data->precalCoef);
794 zoomFilterVisualFXWrapper_free (struct _VISUAL_FX *_this)
796 free (_this->fx_data);
800 zoomFilterVisualFXWrapper_apply (struct _VISUAL_FX *_this, Pixel * src,
801 Pixel * dest, PluginInfo * info)
806 zoomFilterVisualFXWrapper_create (void)
810 fx.init = zoomFilterVisualFXWrapper_init;
811 fx.free = zoomFilterVisualFXWrapper_free;
812 fx.apply = zoomFilterVisualFXWrapper_apply;
817 /* TODO : MOVE THIS AWAY */
820 pointFilter (PluginInfo * goomInfo, Pixel * pix1, Color c, float t1, float t2,
821 float t3, float t4, Uint cycle)
823 Uint x = (Uint) ((int) (goomInfo->screen.width / 2)
824 + (int) (t1 * cos ((float) cycle / t3)));
825 Uint y = (Uint) ((int) (goomInfo->screen.height / 2)
826 + (int) (t2 * sin ((float) cycle / t4)));
828 if ((x > 1) && (y > 1) && (x < goomInfo->screen.width - 2)
829 && (y < goomInfo->screen.height - 2)) {
830 setPixelRGB (goomInfo, pix1, x + 1, y, c);
831 setPixelRGB (goomInfo, pix1, x, y + 1, c);
832 setPixelRGB (goomInfo, pix1, x + 1, y + 1, WHITE);
833 setPixelRGB (goomInfo, pix1, x + 2, y + 1, c);
834 setPixelRGB (goomInfo, pix1, x + 1, y + 2, c);