9 #include "goom_tools.h"
19 #define STOP_SPEED 128
22 goom_init (GoomData * goomdata, guint32 resx, guint32 resy)
25 printf ("GOOM: init (%d, %d);\n", resx, resy);
29 goomdata->buffsize = 0;
31 goomdata->pixel = NULL;
32 goomdata->back = NULL;
36 goom_set_resolution (goomdata, resx, resy);
37 RAND_INIT (goomdata, GPOINTER_TO_INT (goomdata->pixel));
41 goomdata->goomlimit = 2; /* sensibilité du goom */
42 goomdata->zfd = zoomFilterNew ();
43 goomdata->lockvar = 0; /* pour empecher de nouveaux changements */
44 goomdata->goomvar = 0; /* boucle des gooms */
45 goomdata->totalgoom = 0; /* nombre de gooms par seconds */
46 goomdata->agoom = 0; /* un goom a eu lieu.. */
47 goomdata->loopvar = 0; /* mouvement des points */
48 goomdata->speedvar = 0; /* vitesse des particules */
49 goomdata->lineMode = 0; /* l'effet lineaire a dessiner */
53 goom_set_resolution (GoomData * goomdata, guint32 resx, guint32 resy)
55 guint32 buffsize = resx * resy;
57 if ((goomdata->resolx == resx) && (goomdata->resoly == resy))
60 if (goomdata->buffsize < buffsize) {
62 free (goomdata->pixel);
64 free (goomdata->back);
65 goomdata->pixel = (guint32 *) malloc (buffsize * sizeof (guint32) + 128);
66 goomdata->back = (guint32 *) malloc (buffsize * sizeof (guint32) + 128);
67 goomdata->buffsize = buffsize;
69 goomdata->p1 = (void *) (((guintptr) goomdata->pixel + 0x7f) & (~0x7f));
70 goomdata->p2 = (void *) (((guintptr) goomdata->back + 0x7f) & (~0x7f));
73 goomdata->resolx = resx;
74 goomdata->resoly = resy;
76 memset (goomdata->pixel, 0, buffsize * sizeof (guint32) + 128);
77 memset (goomdata->back, 0, buffsize * sizeof (guint32) + 128);
81 goom_update (GoomData * goomdata, gint16 data[2][512])
86 int incvar; /* volume du son */
87 int accelvar; /* acceleration des particules */
89 float largfactor; /* elargissement de l'intervalle d'évolution des points */
91 int resolx = goomdata->resolx;
92 int resoly = goomdata->resoly;
93 ZoomFilterData *pzfd = goomdata->zfd;
96 /* test if the config has changed, update it if so */
98 pointWidth = (resolx * 2) / 5;
99 pointHeight = (resoly * 2) / 5;
101 /* ! etude du signal ... */
103 for (i = 0; i < 512; i++) {
104 if (incvar < data[0][i])
108 accelvar = incvar / 5000;
109 if (goomdata->speedvar > 5) {
111 if (goomdata->speedvar > 20)
113 if (goomdata->speedvar > 40)
114 goomdata->speedvar = 40;
117 goomdata->speedvar += accelvar;
119 if (goomdata->speedvar < 0)
120 goomdata->speedvar = 0;
121 if (goomdata->speedvar > 40)
122 goomdata->speedvar = 40;
125 /* ! calcul du deplacement des petits points ... */
128 ((float) goomdata->speedvar / 40.0f + (float) incvar / 50000.0f) / 1.5f;
129 if (largfactor > 1.5f)
132 for (i = 1; i * 15 <= goomdata->speedvar + 15; i++) {
133 goomdata->loopvar += goomdata->speedvar + 1;
135 pointFilter (goomdata,
137 ((pointWidth - 6.0f) * largfactor + 5.0f),
138 ((pointHeight - 6.0f) * largfactor + 5.0f),
139 i * 152.0f, 128.0f, goomdata->loopvar + i * 2032);
140 pointFilter (goomdata, ORANGE,
141 ((pointWidth / 2) * largfactor) / i + 10.0f * i,
142 ((pointHeight / 2) * largfactor) / i + 10.0f * i,
143 96.0f, i * 80.0f, goomdata->loopvar / i);
144 pointFilter (goomdata, VIOLET,
145 ((pointHeight / 3 + 5.0f) * largfactor) / i + 10.0f * i,
146 ((pointHeight / 3 + 5.0f) * largfactor) / i + 10.0f * i,
147 i + 122.0f, 134.0f, goomdata->loopvar / i);
148 pointFilter (goomdata, BLACK,
149 ((pointHeight / 3) * largfactor + 20.0f),
150 ((pointHeight / 3) * largfactor + 20.0f),
151 58.0f, i * 66.0f, goomdata->loopvar / i);
152 pointFilter (goomdata, WHITE,
153 (pointHeight * largfactor + 10.0f * i) / i,
154 (pointHeight * largfactor + 10.0f * i) / i,
155 66.0f, 74.0f, goomdata->loopvar + i * 500);
158 /* diminuer de 1 le temps de lockage */
159 /* note pour ceux qui n'ont pas suivis : le lockvar permet d'empecher un */
160 /* changement d'etat du plugins juste apres un autre changement d'etat. oki ? */
161 if (--goomdata->lockvar < 0)
162 goomdata->lockvar = 0;
165 if (--goomdata->agoom < 0)
168 /* on verifie qu'il ne se pas un truc interressant avec le son. */
169 if ((accelvar > goomdata->goomlimit) || (accelvar < -goomdata->goomlimit)) {
170 /* UN GOOM !!! YAHOO ! */
171 goomdata->totalgoom++;
172 goomdata->agoom = 20; /* mais pdt 20 cycles, il n'y en aura plus. */
173 goomdata->lineMode = (goomdata->lineMode + 1) % 20; /* Tous les 10 gooms on change de mode lineaire */
175 /* changement eventuel de mode */
176 switch (iRAND (goomdata, 10)) {
180 pzfd->mode = WAVE_MODE;
181 pzfd->vitesse = STOP_SPEED - 1;
186 pzfd->mode = CRYSTAL_BALL_MODE;
189 pzfd->mode = AMULETTE_MODE;
192 pzfd->mode = WATER_MODE;
195 pzfd->mode = SCRUNCH_MODE;
198 pzfd->mode = NORMAL_MODE;
202 /* tout ceci ne sera fait qu'en cas de non-blocage */
203 if (goomdata->lockvar == 0) {
204 /* reperage de goom (acceleration forte de l'acceleration du volume) */
205 /* -> coup de boost de la vitesse si besoin.. */
206 if ((accelvar > goomdata->goomlimit) || (accelvar < -goomdata->goomlimit)) {
208 /*if (goomvar % 1 == 0) */
213 newvit = STOP_SPEED - goomdata->speedvar / 2;
214 /* retablir le zoom avant.. */
215 if ((pzfd->reverse) && (!(goomdata->cycle % 12)) && (rand () % 3 == 0)) {
217 pzfd->vitesse = STOP_SPEED - 2;
218 goomdata->lockvar = 50;
220 if (iRAND (goomdata, 10) == 0) {
222 goomdata->lockvar = 100;
225 /* changement de milieu.. */
226 switch (iRAND (goomdata, 20)) {
228 pzfd->middleY = resoly - 1;
229 pzfd->middleX = resolx / 2;
232 pzfd->middleX = resolx - 1;
238 pzfd->middleY = resoly / 2;
239 pzfd->middleX = resolx / 2;
242 if (pzfd->mode == WATER_MODE) {
243 pzfd->middleX = resolx / 2;
244 pzfd->middleY = resoly / 2;
247 switch (vtmp = (iRAND (goomdata, 27))) {
249 pzfd->vPlaneEffect = iRAND (goomdata, 3);
250 pzfd->vPlaneEffect -= iRAND (goomdata, 3);
251 pzfd->hPlaneEffect = iRAND (goomdata, 3);
252 pzfd->hPlaneEffect -= iRAND (goomdata, 3);
255 pzfd->vPlaneEffect = 0;
256 pzfd->hPlaneEffect = iRAND (goomdata, 8);
257 pzfd->hPlaneEffect -= iRAND (goomdata, 8);
263 pzfd->vPlaneEffect = iRAND (goomdata, 5);
264 pzfd->vPlaneEffect -= iRAND (goomdata, 5);
265 pzfd->hPlaneEffect = -pzfd->vPlaneEffect;
268 pzfd->hPlaneEffect = 5 + iRAND (goomdata, 8);
269 pzfd->vPlaneEffect = -pzfd->hPlaneEffect;
272 pzfd->vPlaneEffect = 5 + iRAND (goomdata, 8);
273 pzfd->hPlaneEffect = -pzfd->hPlaneEffect;
276 pzfd->hPlaneEffect = 0;
277 pzfd->vPlaneEffect = iRAND (goomdata, 10);
278 pzfd->vPlaneEffect -= iRAND (goomdata, 10);
282 pzfd->vPlaneEffect = 0;
283 pzfd->hPlaneEffect = 0;
287 if (iRAND (goomdata, 3) != 0)
290 pzfd->noisify = iRAND (goomdata, 3) + 2;
291 goomdata->lockvar *= 3;
294 if (pzfd->mode == AMULETTE_MODE) {
295 pzfd->vPlaneEffect = 0;
296 pzfd->hPlaneEffect = 0;
300 if ((pzfd->middleX == 1) || (pzfd->middleX == resolx - 1)) {
301 pzfd->vPlaneEffect = 0;
302 pzfd->hPlaneEffect = iRAND (goomdata, 2) ? 0 : pzfd->hPlaneEffect;
305 if (newvit < pzfd->vitesse) { /* on accelere */
307 if (((newvit < STOP_SPEED - 7) &&
308 (pzfd->vitesse < STOP_SPEED - 6) &&
309 (goomdata->cycle % 3 == 0)) || (iRAND (goomdata, 40) == 0)) {
310 pzfd->vitesse = STOP_SPEED - 1;
311 pzfd->reverse = !pzfd->reverse;
313 pzfd->vitesse = (newvit + pzfd->vitesse * 4) / 5;
315 goomdata->lockvar += 50;
320 if (iRAND (goomdata, 1000) == 0) {
322 printf ("coup du sort...\n") ;
325 pzfd->vitesse = STOP_SPEED - 1;
327 pzfd->sqrtperte = 16;
328 goomdata->goomvar = 1;
329 goomdata->lockvar += 70;
333 /* gros frein si la musique est calme */
334 if ((goomdata->speedvar < 1) && (pzfd->vitesse < STOP_SPEED - 4)
335 && (goomdata->cycle % 16 == 0)) {
337 printf ("++slow part... %i\n", zfd.vitesse) ;
342 pzfd->sqrtperte = 16;
343 goomdata->goomvar = 0;
345 printf ("--slow part... %i\n", zfd.vitesse) ;
349 /* baisser regulierement la vitesse... */
350 if ((goomdata->cycle % 73 == 0) && (pzfd->vitesse < STOP_SPEED - 5)) {
352 printf ("slow down...\n") ;
358 /* arreter de decrémenter au bout d'un certain temps */
359 if ((goomdata->cycle % 101 == 0) && (pzfd->pertedec == 7)) {
362 pzfd->sqrtperte = 16;
366 zoomFilterFastRGB (goomdata, pzfd, zfd_update);
368 /* si on est dans un goom : afficher les lignes... */
369 if (goomdata->agoom > 15)
370 goom_lines (goomdata, data, ((pzfd->middleX == resolx / 2)
371 && (pzfd->middleY == resoly / 2)
372 && (pzfd->mode != WATER_MODE))
373 ? (goomdata->lineMode / 10) : 0, goomdata->p2, goomdata->agoom - 15);
375 return_val = goomdata->p2;
377 goomdata->p1 = goomdata->p2;
380 /* affichage et swappage des buffers.. */
383 /* tous les 100 cycles : vérifier si le taux de goom est correct */
384 /* et le modifier sinon.. */
385 if (!(goomdata->cycle % 100)) {
386 if (goomdata->totalgoom > 15) {
387 /* printf ("less gooms\n") ; */
388 goomdata->goomlimit++;
390 if ((goomdata->totalgoom == 0) && (goomdata->goomlimit > 1))
391 goomdata->goomlimit--;
393 goomdata->totalgoom = 0;
399 goom_close (GoomData * goomdata)
401 if (goomdata->pixel != NULL)
402 free (goomdata->pixel);
403 if (goomdata->back != NULL)
404 free (goomdata->back);
405 if (goomdata->zfd != NULL) {
406 zoomFilterDestroy (goomdata->zfd);
407 goomdata->zfd = NULL;
409 goomdata->pixel = goomdata->back = NULL;
410 RAND_CLOSE (goomdata);