mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-09 10:59:39 +00:00
409 lines
11 KiB
C
409 lines
11 KiB
C
#include <stdlib.h>
|
||
#include <string.h>
|
||
#include "goom_core.h"
|
||
#include "goom_tools.h"
|
||
#include "filters.h"
|
||
#include "lines.h"
|
||
|
||
/*#define VERBOSE */
|
||
|
||
#ifdef VERBOSE
|
||
#include <stdio.h>
|
||
#endif
|
||
|
||
#define STOP_SPEED 128
|
||
|
||
|
||
/**-----------------------------------------------------**
|
||
** SHARED DATA **
|
||
**-----------------------------------------------------**/
|
||
static guint32 *pixel;
|
||
static guint32 *back;
|
||
static guint32 *p1, *p2, *tmp;
|
||
static guint32 cycle;
|
||
|
||
guint32 resolx, resoly, buffsize;
|
||
|
||
void
|
||
goom_init (guint32 resx, guint32 resy)
|
||
{
|
||
#ifdef VERBOSE
|
||
printf ("GOOM: init (%d, %d);\n", resx, resy);
|
||
#endif
|
||
resolx = resx;
|
||
resoly = resy;
|
||
buffsize = resx * resy;
|
||
|
||
pixel = (guint32 *) malloc (buffsize * sizeof (guint32) + 128);
|
||
back = (guint32 *) malloc (buffsize * sizeof (guint32) + 128);
|
||
RAND_INIT (GPOINTER_TO_INT (pixel));
|
||
cycle = 0;
|
||
|
||
p1 = (void *) (((unsigned long) pixel + 0x7f) & (~0x7f));
|
||
p2 = (void *) (((unsigned long) back + 0x7f) & (~0x7f));
|
||
}
|
||
|
||
|
||
void
|
||
goom_set_resolution (guint32 resx, guint32 resy)
|
||
{
|
||
free (pixel);
|
||
free (back);
|
||
|
||
resolx = resx;
|
||
resoly = resy;
|
||
buffsize = resx * resy;
|
||
|
||
pixel = (guint32 *) malloc (buffsize * sizeof (guint32) + 128);
|
||
memset (pixel, 0, buffsize * sizeof (guint32) + 128);
|
||
back = (guint32 *) malloc (buffsize * sizeof (guint32) + 128);
|
||
memset (back, 0, buffsize * sizeof (guint32) + 128);
|
||
|
||
p1 = (void *) (((unsigned long) pixel + 0x7f) & (~0x7f));
|
||
p2 = (void *) (((unsigned long) back + 0x7f) & (~0x7f));
|
||
}
|
||
|
||
|
||
guint32 *
|
||
goom_update (gint16 data[2][512])
|
||
{
|
||
static int lockvar = 0; /* pour empecher de nouveaux changements */
|
||
static int goomvar = 0; /* boucle des gooms */
|
||
static int totalgoom = 0; /* nombre de gooms par seconds */
|
||
static int agoom = 0; /* un goom a eu lieu.. */
|
||
static int loopvar = 0; /* mouvement des points */
|
||
static int speedvar = 0; /* vitesse des particules */
|
||
static int lineMode = 0; /* l'effet lineaire a dessiner */
|
||
guint32 *return_val;
|
||
guint32 pointWidth;
|
||
guint32 pointHeight;
|
||
int incvar; /* volume du son */
|
||
int accelvar; /* acceleration des particules */
|
||
int i;
|
||
float largfactor; /* elargissement de l'intervalle d'<27>volution des points */
|
||
static char goomlimit = 2; /* sensibilit<69> du goom */
|
||
static ZoomFilterData zfd = {
|
||
128, 8, 16,
|
||
1, 1, 0, WAVE_MODE,
|
||
0, 0, 0
|
||
};
|
||
|
||
ZoomFilterData *pzfd;
|
||
|
||
/* test if the config has changed, update it if so */
|
||
pointWidth = (resolx * 2) / 5;
|
||
pointHeight = (resoly * 2) / 5;
|
||
|
||
/* ! etude du signal ... */
|
||
incvar = 0;
|
||
for (i = 0; i < 512; i++) {
|
||
if (incvar < data[0][i])
|
||
incvar = data[0][i];
|
||
}
|
||
|
||
accelvar = incvar / 5000;
|
||
if (speedvar > 5) {
|
||
accelvar--;
|
||
if (speedvar > 20)
|
||
accelvar--;
|
||
if (speedvar > 40)
|
||
speedvar = 40;
|
||
}
|
||
accelvar--;
|
||
speedvar += accelvar;
|
||
|
||
if (speedvar < 0)
|
||
speedvar = 0;
|
||
if (speedvar > 40)
|
||
speedvar = 40;
|
||
|
||
|
||
/* ! calcul du deplacement des petits points ... */
|
||
|
||
largfactor = ((float) speedvar / 40.0f + (float) incvar / 50000.0f) / 1.5f;
|
||
if (largfactor > 1.5f)
|
||
largfactor = 1.5f;
|
||
|
||
for (i = 1; i * 15 <= speedvar + 15; i++) {
|
||
loopvar += speedvar + 1;
|
||
|
||
pointFilter (p1,
|
||
YELLOW,
|
||
((pointWidth - 6.0f) * largfactor + 5.0f),
|
||
((pointHeight - 6.0f) * largfactor + 5.0f),
|
||
i * 152.0f, 128.0f, loopvar + i * 2032);
|
||
pointFilter (p1, ORANGE,
|
||
((pointWidth / 2) * largfactor) / i + 10.0f * i,
|
||
((pointHeight / 2) * largfactor) / i + 10.0f * i,
|
||
96.0f, i * 80.0f, loopvar / i);
|
||
pointFilter (p1, VIOLET,
|
||
((pointHeight / 3 + 5.0f) * largfactor) / i + 10.0f * i,
|
||
((pointHeight / 3 + 5.0f) * largfactor) / i + 10.0f * i,
|
||
i + 122.0f, 134.0f, loopvar / i);
|
||
pointFilter (p1, BLACK,
|
||
((pointHeight / 3) * largfactor + 20.0f),
|
||
((pointHeight / 3) * largfactor + 20.0f),
|
||
58.0f, i * 66.0f, loopvar / i);
|
||
pointFilter (p1, WHITE,
|
||
(pointHeight * largfactor + 10.0f * i) / i,
|
||
(pointHeight * largfactor + 10.0f * i) / i,
|
||
66.0f, 74.0f, loopvar + i * 500);
|
||
}
|
||
|
||
/* par d<>faut pas de changement de zoom */
|
||
pzfd = NULL;
|
||
|
||
/* diminuer de 1 le temps de lockage */
|
||
/* note pour ceux qui n'ont pas suivis : le lockvar permet d'empecher un */
|
||
/* changement d'etat du plugins juste apres un autre changement d'etat. oki ? */
|
||
if (--lockvar < 0)
|
||
lockvar = 0;
|
||
|
||
/* temps du goom */
|
||
if (--agoom < 0)
|
||
agoom = 0;
|
||
|
||
/* on verifie qu'il ne se pas un truc interressant avec le son. */
|
||
if ((accelvar > goomlimit) || (accelvar < -goomlimit)) {
|
||
/* UN GOOM !!! YAHOO ! */
|
||
totalgoom++;
|
||
agoom = 20; /* mais pdt 20 cycles, il n'y en aura plus. */
|
||
lineMode = (lineMode + 1) % 20; /* Tous les 10 gooms on change de mode lineaire */
|
||
|
||
/* changement eventuel de mode */
|
||
switch (iRAND (10)) {
|
||
case 0:
|
||
case 1:
|
||
case 2:
|
||
zfd.mode = WAVE_MODE;
|
||
zfd.vitesse = STOP_SPEED - 1;
|
||
zfd.reverse = 0;
|
||
break;
|
||
case 3:
|
||
case 4:
|
||
zfd.mode = CRYSTAL_BALL_MODE;
|
||
break;
|
||
case 5:
|
||
zfd.mode = AMULETTE_MODE;
|
||
break;
|
||
case 6:
|
||
zfd.mode = WATER_MODE;
|
||
break;
|
||
case 7:
|
||
zfd.mode = SCRUNCH_MODE;
|
||
break;
|
||
default:
|
||
zfd.mode = NORMAL_MODE;
|
||
}
|
||
}
|
||
|
||
/* tout ceci ne sera fait qu'en cas de non-blocage */
|
||
if (lockvar == 0) {
|
||
/* reperage de goom (acceleration forte de l'acceleration du volume) */
|
||
/* -> coup de boost de la vitesse si besoin.. */
|
||
if ((accelvar > goomlimit) || (accelvar < -goomlimit)) {
|
||
goomvar++;
|
||
/*if (goomvar % 1 == 0) */
|
||
{
|
||
guint32 vtmp;
|
||
guint32 newvit;
|
||
|
||
newvit = STOP_SPEED - speedvar / 2;
|
||
/* retablir le zoom avant.. */
|
||
if ((zfd.reverse) && (!(cycle % 12)) && (rand () % 3 == 0)) {
|
||
zfd.reverse = 0;
|
||
zfd.vitesse = STOP_SPEED - 2;
|
||
lockvar = 50;
|
||
}
|
||
if (iRAND (10) == 0) {
|
||
zfd.reverse = 1;
|
||
lockvar = 100;
|
||
}
|
||
|
||
/* changement de milieu.. */
|
||
switch (iRAND (20)) {
|
||
case 0:
|
||
zfd.middleY = resoly - 1;
|
||
zfd.middleX = resolx / 2;
|
||
break;
|
||
case 1:
|
||
zfd.middleX = resolx - 1;
|
||
break;
|
||
case 2:
|
||
zfd.middleX = 1;
|
||
break;
|
||
default:
|
||
zfd.middleY = resoly / 2;
|
||
zfd.middleX = resolx / 2;
|
||
}
|
||
|
||
if (zfd.mode == WATER_MODE) {
|
||
zfd.middleX = resolx / 2;
|
||
zfd.middleY = resoly / 2;
|
||
}
|
||
|
||
switch (vtmp = (iRAND (27))) {
|
||
case 0:
|
||
zfd.vPlaneEffect = iRAND (3);
|
||
zfd.vPlaneEffect -= iRAND (3);
|
||
zfd.hPlaneEffect = iRAND (3);
|
||
zfd.hPlaneEffect -= iRAND (3);
|
||
break;
|
||
case 3:
|
||
zfd.vPlaneEffect = 0;
|
||
zfd.hPlaneEffect = iRAND (8);
|
||
zfd.hPlaneEffect -= iRAND (8);
|
||
break;
|
||
case 4:
|
||
case 5:
|
||
case 6:
|
||
case 7:
|
||
zfd.vPlaneEffect = iRAND (5);
|
||
zfd.vPlaneEffect -= iRAND (5);
|
||
zfd.hPlaneEffect = -zfd.vPlaneEffect;
|
||
break;
|
||
case 8:
|
||
zfd.hPlaneEffect = 5 + iRAND (8);
|
||
zfd.vPlaneEffect = -zfd.hPlaneEffect;
|
||
break;
|
||
case 9:
|
||
zfd.vPlaneEffect = 5 + iRAND (8);
|
||
zfd.hPlaneEffect = -zfd.hPlaneEffect;
|
||
break;
|
||
case 13:
|
||
zfd.hPlaneEffect = 0;
|
||
zfd.vPlaneEffect = iRAND (10);
|
||
zfd.vPlaneEffect -= iRAND (10);
|
||
break;
|
||
default:
|
||
if (vtmp < 10) {
|
||
zfd.vPlaneEffect = 0;
|
||
zfd.hPlaneEffect = 0;
|
||
}
|
||
}
|
||
|
||
if (iRAND (3) != 0)
|
||
zfd.noisify = 0;
|
||
else {
|
||
zfd.noisify = iRAND (3) + 2;
|
||
lockvar *= 3;
|
||
}
|
||
|
||
if (zfd.mode == AMULETTE_MODE) {
|
||
zfd.vPlaneEffect = 0;
|
||
zfd.hPlaneEffect = 0;
|
||
zfd.noisify = 0;
|
||
}
|
||
|
||
if ((zfd.middleX == 1) || (zfd.middleX == resolx - 1)) {
|
||
zfd.vPlaneEffect = 0;
|
||
zfd.hPlaneEffect = iRAND (2) ? 0 : zfd.hPlaneEffect;
|
||
}
|
||
|
||
if (newvit < zfd.vitesse) { /* on accelere */
|
||
pzfd = &zfd;
|
||
if (((newvit < STOP_SPEED - 7) &&
|
||
(zfd.vitesse < STOP_SPEED - 6) &&
|
||
(cycle % 3 == 0)) || (iRAND (40) == 0)) {
|
||
zfd.vitesse = STOP_SPEED - 1;
|
||
zfd.reverse = !zfd.reverse;
|
||
} else {
|
||
zfd.vitesse = (newvit + zfd.vitesse * 4) / 5;
|
||
}
|
||
lockvar += 50;
|
||
}
|
||
}
|
||
}
|
||
/* mode mega-lent */
|
||
if (iRAND (1000) == 0) {
|
||
/*
|
||
printf ("coup du sort...\n") ;
|
||
*/
|
||
pzfd = &zfd;
|
||
zfd.vitesse = STOP_SPEED - 1;
|
||
zfd.pertedec = 8;
|
||
zfd.sqrtperte = 16;
|
||
goomvar = 1;
|
||
lockvar += 70;
|
||
}
|
||
}
|
||
|
||
/* gros frein si la musique est calme */
|
||
if ((speedvar < 1) && (zfd.vitesse < STOP_SPEED - 4) && (cycle % 16 == 0)) {
|
||
/*
|
||
printf ("++slow part... %i\n", zfd.vitesse) ;
|
||
*/
|
||
pzfd = &zfd;
|
||
zfd.vitesse += 3;
|
||
zfd.pertedec = 8;
|
||
zfd.sqrtperte = 16;
|
||
goomvar = 0;
|
||
/*
|
||
printf ("--slow part... %i\n", zfd.vitesse) ;
|
||
*/
|
||
}
|
||
|
||
/* baisser regulierement la vitesse... */
|
||
if ((cycle % 73 == 0) && (zfd.vitesse < STOP_SPEED - 5)) {
|
||
/*
|
||
printf ("slow down...\n") ;
|
||
*/
|
||
pzfd = &zfd;
|
||
zfd.vitesse++;
|
||
}
|
||
|
||
/* arreter de decr<63>menter au bout d'un certain temps */
|
||
if ((cycle % 101 == 0) && (zfd.pertedec == 7)) {
|
||
pzfd = &zfd;
|
||
zfd.pertedec = 8;
|
||
zfd.sqrtperte = 16;
|
||
}
|
||
#ifdef VERBOSE
|
||
if (pzfd) {
|
||
printf ("GOOM: pzfd->mode = %d\n", pzfd->mode);
|
||
}
|
||
#endif
|
||
|
||
/* Zoom here ! */
|
||
zoomFilterFastRGB (p1, p2, pzfd, resolx, resoly);
|
||
|
||
/* si on est dans un goom : afficher les lignes... */
|
||
if (agoom > 15)
|
||
goom_lines
|
||
(data, ((zfd.middleX == resolx / 2) && (zfd.middleY == resoly / 2)
|
||
&& (zfd.mode != WATER_MODE))
|
||
? (lineMode / 10) : 0, p2, agoom - 15);
|
||
|
||
return_val = p2;
|
||
tmp = p1;
|
||
p1 = p2;
|
||
p2 = tmp;
|
||
|
||
/* affichage et swappage des buffers.. */
|
||
cycle++;
|
||
|
||
/* tous les 100 cycles : v<>rifier si le taux de goom est correct */
|
||
/* et le modifier sinon.. */
|
||
if (!(cycle % 100)) {
|
||
if (totalgoom > 15) {
|
||
/* printf ("less gooms\n") ; */
|
||
goomlimit++;
|
||
} else {
|
||
if ((totalgoom == 0) && (goomlimit > 1))
|
||
goomlimit--;
|
||
}
|
||
totalgoom = 0;
|
||
}
|
||
return return_val;
|
||
}
|
||
|
||
void
|
||
goom_close ()
|
||
{
|
||
if (pixel != NULL)
|
||
free (pixel);
|
||
if (back != NULL)
|
||
free (back);
|
||
pixel = back = NULL;
|
||
RAND_CLOSE ();
|
||
}
|