mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-04 23:46:43 +00:00
1de2df03be
Causes problems with the new gtk-doc 1.26 otherwise, but is a good idea in any case. https://bugzilla.gnome.org/show_bug.cgi?id=786364
411 lines
12 KiB
C
411 lines
12 KiB
C
#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <glib.h>
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#include <stdlib.h>
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#include <string.h>
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#include "goom_core.h"
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#include "goom_tools.h"
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#include "filters.h"
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#include "lines.h"
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/*#define VERBOSE */
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#ifdef VERBOSE
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#include <stdio.h>
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#endif
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#define STOP_SPEED 128
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void
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goom_init (GoomData * goomdata, guint32 resx, guint32 resy)
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{
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#ifdef VERBOSE
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printf ("GOOM: init (%d, %d);\n", resx, resy);
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#endif
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goomdata->resolx = 0;
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goomdata->resoly = 0;
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goomdata->buffsize = 0;
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goomdata->pixel = NULL;
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goomdata->back = NULL;
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goomdata->p1 = NULL;
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goomdata->p2 = NULL;
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goom_set_resolution (goomdata, resx, resy);
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RAND_INIT (goomdata, GPOINTER_TO_INT (goomdata->pixel));
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goomdata->cycle = 0;
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goomdata->goomlimit = 2; /* sensibilité du goom */
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goomdata->zfd = zoomFilterNew ();
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goomdata->lockvar = 0; /* pour empecher de nouveaux changements */
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goomdata->goomvar = 0; /* boucle des gooms */
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goomdata->totalgoom = 0; /* nombre de gooms par seconds */
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goomdata->agoom = 0; /* un goom a eu lieu.. */
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goomdata->loopvar = 0; /* mouvement des points */
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goomdata->speedvar = 0; /* vitesse des particules */
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goomdata->lineMode = 0; /* l'effet lineaire a dessiner */
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}
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void
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goom_set_resolution (GoomData * goomdata, guint32 resx, guint32 resy)
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{
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guint32 buffsize = resx * resy;
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if ((goomdata->resolx == resx) && (goomdata->resoly == resy))
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return;
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if (goomdata->buffsize < buffsize) {
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if (goomdata->pixel)
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free (goomdata->pixel);
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if (goomdata->back)
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free (goomdata->back);
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goomdata->pixel = (guint32 *) malloc (buffsize * sizeof (guint32) + 128);
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goomdata->back = (guint32 *) malloc (buffsize * sizeof (guint32) + 128);
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goomdata->buffsize = buffsize;
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goomdata->p1 = (void *) (((guintptr) goomdata->pixel + 0x7f) & (~0x7f));
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goomdata->p2 = (void *) (((guintptr) goomdata->back + 0x7f) & (~0x7f));
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}
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goomdata->resolx = resx;
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goomdata->resoly = resy;
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memset (goomdata->pixel, 0, buffsize * sizeof (guint32) + 128);
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memset (goomdata->back, 0, buffsize * sizeof (guint32) + 128);
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}
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guint32 *
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goom_update (GoomData * goomdata, gint16 data[2][512])
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{
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guint32 *return_val;
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guint32 pointWidth;
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guint32 pointHeight;
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int incvar; /* volume du son */
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int accelvar; /* acceleration des particules */
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int i;
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float largfactor; /* elargissement de l'intervalle d'évolution des points */
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int zfd_update = 0;
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int resolx = goomdata->resolx;
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int resoly = goomdata->resoly;
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ZoomFilterData *pzfd = goomdata->zfd;
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guint32 *tmp;
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/* test if the config has changed, update it if so */
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pointWidth = (resolx * 2) / 5;
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pointHeight = (resoly * 2) / 5;
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/* ! etude du signal ... */
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incvar = 0;
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for (i = 0; i < 512; i++) {
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if (incvar < data[0][i])
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incvar = data[0][i];
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}
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accelvar = incvar / 5000;
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if (goomdata->speedvar > 5) {
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accelvar--;
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if (goomdata->speedvar > 20)
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accelvar--;
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if (goomdata->speedvar > 40)
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goomdata->speedvar = 40;
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}
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accelvar--;
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goomdata->speedvar += accelvar;
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if (goomdata->speedvar < 0)
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goomdata->speedvar = 0;
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if (goomdata->speedvar > 40)
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goomdata->speedvar = 40;
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/* ! calcul du deplacement des petits points ... */
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largfactor =
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((float) goomdata->speedvar / 40.0f + (float) incvar / 50000.0f) / 1.5f;
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if (largfactor > 1.5f)
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largfactor = 1.5f;
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for (i = 1; i * 15 <= goomdata->speedvar + 15; i++) {
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goomdata->loopvar += goomdata->speedvar + 1;
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pointFilter (goomdata,
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YELLOW,
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((pointWidth - 6.0f) * largfactor + 5.0f),
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((pointHeight - 6.0f) * largfactor + 5.0f),
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i * 152.0f, 128.0f, goomdata->loopvar + i * 2032);
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pointFilter (goomdata, ORANGE,
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((pointWidth / 2) * largfactor) / i + 10.0f * i,
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((pointHeight / 2) * largfactor) / i + 10.0f * i,
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96.0f, i * 80.0f, goomdata->loopvar / i);
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pointFilter (goomdata, VIOLET,
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((pointHeight / 3 + 5.0f) * largfactor) / i + 10.0f * i,
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((pointHeight / 3 + 5.0f) * largfactor) / i + 10.0f * i,
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i + 122.0f, 134.0f, goomdata->loopvar / i);
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pointFilter (goomdata, BLACK,
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((pointHeight / 3) * largfactor + 20.0f),
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((pointHeight / 3) * largfactor + 20.0f),
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58.0f, i * 66.0f, goomdata->loopvar / i);
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pointFilter (goomdata, WHITE,
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(pointHeight * largfactor + 10.0f * i) / i,
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(pointHeight * largfactor + 10.0f * i) / i,
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66.0f, 74.0f, goomdata->loopvar + i * 500);
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}
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/* diminuer de 1 le temps de lockage */
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/* note pour ceux qui n'ont pas suivis : le lockvar permet d'empecher un */
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/* changement d'etat du plugins juste apres un autre changement d'etat. oki ? */
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if (--goomdata->lockvar < 0)
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goomdata->lockvar = 0;
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/* temps du goom */
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if (--goomdata->agoom < 0)
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goomdata->agoom = 0;
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/* on verifie qu'il ne se pas un truc interressant avec le son. */
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if ((accelvar > goomdata->goomlimit) || (accelvar < -goomdata->goomlimit)) {
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/* UN GOOM !!! YAHOO ! */
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goomdata->totalgoom++;
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goomdata->agoom = 20; /* mais pdt 20 cycles, il n'y en aura plus. */
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goomdata->lineMode = (goomdata->lineMode + 1) % 20; /* Tous les 10 gooms on change de mode lineaire */
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/* changement eventuel de mode */
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switch (iRAND (goomdata, 10)) {
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case 0:
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case 1:
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case 2:
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pzfd->mode = WAVE_MODE;
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pzfd->vitesse = STOP_SPEED - 1;
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pzfd->reverse = 0;
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break;
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case 3:
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case 4:
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pzfd->mode = CRYSTAL_BALL_MODE;
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break;
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case 5:
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pzfd->mode = AMULETTE_MODE;
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break;
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case 6:
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pzfd->mode = WATER_MODE;
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break;
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case 7:
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pzfd->mode = SCRUNCH_MODE;
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break;
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default:
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pzfd->mode = NORMAL_MODE;
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}
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}
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/* tout ceci ne sera fait qu'en cas de non-blocage */
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if (goomdata->lockvar == 0) {
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/* reperage de goom (acceleration forte de l'acceleration du volume) */
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/* -> coup de boost de la vitesse si besoin.. */
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if ((accelvar > goomdata->goomlimit) || (accelvar < -goomdata->goomlimit)) {
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goomdata->goomvar++;
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/*if (goomvar % 1 == 0) */
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{
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guint32 vtmp;
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guint32 newvit;
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newvit = STOP_SPEED - goomdata->speedvar / 2;
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/* retablir le zoom avant.. */
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if ((pzfd->reverse) && (!(goomdata->cycle % 12)) && (rand () % 3 == 0)) {
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pzfd->reverse = 0;
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pzfd->vitesse = STOP_SPEED - 2;
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goomdata->lockvar = 50;
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}
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if (iRAND (goomdata, 10) == 0) {
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pzfd->reverse = 1;
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goomdata->lockvar = 100;
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}
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/* changement de milieu.. */
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switch (iRAND (goomdata, 20)) {
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case 0:
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pzfd->middleY = resoly - 1;
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pzfd->middleX = resolx / 2;
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break;
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case 1:
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pzfd->middleX = resolx - 1;
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break;
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case 2:
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pzfd->middleX = 1;
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break;
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default:
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pzfd->middleY = resoly / 2;
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pzfd->middleX = resolx / 2;
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}
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if (pzfd->mode == WATER_MODE) {
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pzfd->middleX = resolx / 2;
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pzfd->middleY = resoly / 2;
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}
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switch (vtmp = (iRAND (goomdata, 27))) {
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case 0:
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pzfd->vPlaneEffect = iRAND (goomdata, 3);
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pzfd->vPlaneEffect -= iRAND (goomdata, 3);
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pzfd->hPlaneEffect = iRAND (goomdata, 3);
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pzfd->hPlaneEffect -= iRAND (goomdata, 3);
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break;
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case 3:
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pzfd->vPlaneEffect = 0;
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pzfd->hPlaneEffect = iRAND (goomdata, 8);
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pzfd->hPlaneEffect -= iRAND (goomdata, 8);
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break;
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case 4:
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case 5:
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case 6:
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case 7:
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pzfd->vPlaneEffect = iRAND (goomdata, 5);
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pzfd->vPlaneEffect -= iRAND (goomdata, 5);
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pzfd->hPlaneEffect = -pzfd->vPlaneEffect;
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break;
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case 8:
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pzfd->hPlaneEffect = 5 + iRAND (goomdata, 8);
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pzfd->vPlaneEffect = -pzfd->hPlaneEffect;
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break;
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case 9:
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pzfd->vPlaneEffect = 5 + iRAND (goomdata, 8);
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pzfd->hPlaneEffect = -pzfd->hPlaneEffect;
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break;
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case 13:
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pzfd->hPlaneEffect = 0;
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pzfd->vPlaneEffect = iRAND (goomdata, 10);
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pzfd->vPlaneEffect -= iRAND (goomdata, 10);
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break;
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default:
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if (vtmp < 10) {
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pzfd->vPlaneEffect = 0;
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pzfd->hPlaneEffect = 0;
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}
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}
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if (iRAND (goomdata, 3) != 0)
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pzfd->noisify = 0;
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else {
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pzfd->noisify = iRAND (goomdata, 3) + 2;
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goomdata->lockvar *= 3;
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}
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if (pzfd->mode == AMULETTE_MODE) {
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pzfd->vPlaneEffect = 0;
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pzfd->hPlaneEffect = 0;
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pzfd->noisify = 0;
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}
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if ((pzfd->middleX == 1) || (pzfd->middleX == resolx - 1)) {
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pzfd->vPlaneEffect = 0;
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pzfd->hPlaneEffect = iRAND (goomdata, 2) ? 0 : pzfd->hPlaneEffect;
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}
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if (newvit < pzfd->vitesse) { /* on accelere */
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zfd_update = 1;
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if (((newvit < STOP_SPEED - 7) &&
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(pzfd->vitesse < STOP_SPEED - 6) &&
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(goomdata->cycle % 3 == 0)) || (iRAND (goomdata, 40) == 0)) {
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pzfd->vitesse = STOP_SPEED - 1;
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pzfd->reverse = !pzfd->reverse;
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} else {
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pzfd->vitesse = (newvit + pzfd->vitesse * 4) / 5;
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}
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goomdata->lockvar += 50;
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}
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}
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}
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/* mode mega-lent */
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if (iRAND (goomdata, 1000) == 0) {
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/*
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printf ("coup du sort...\n") ;
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*/
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zfd_update = 1;
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pzfd->vitesse = STOP_SPEED - 1;
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pzfd->pertedec = 8;
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pzfd->sqrtperte = 16;
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goomdata->goomvar = 1;
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goomdata->lockvar += 70;
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}
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}
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/* gros frein si la musique est calme */
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if ((goomdata->speedvar < 1) && (pzfd->vitesse < STOP_SPEED - 4)
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&& (goomdata->cycle % 16 == 0)) {
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/*
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printf ("++slow part... %i\n", zfd.vitesse) ;
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*/
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zfd_update = 1;
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pzfd->vitesse += 3;
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pzfd->pertedec = 8;
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pzfd->sqrtperte = 16;
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goomdata->goomvar = 0;
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/*
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printf ("--slow part... %i\n", zfd.vitesse) ;
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*/
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}
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/* baisser regulierement la vitesse... */
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if ((goomdata->cycle % 73 == 0) && (pzfd->vitesse < STOP_SPEED - 5)) {
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/*
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printf ("slow down...\n") ;
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*/
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zfd_update = 1;
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pzfd->vitesse++;
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}
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/* arreter de decrémenter au bout d'un certain temps */
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if ((goomdata->cycle % 101 == 0) && (pzfd->pertedec == 7)) {
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zfd_update = 1;
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pzfd->pertedec = 8;
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pzfd->sqrtperte = 16;
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}
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/* Zoom here ! */
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zoomFilterFastRGB (goomdata, pzfd, zfd_update);
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/* si on est dans un goom : afficher les lignes... */
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if (goomdata->agoom > 15)
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goom_lines (goomdata, data, ((pzfd->middleX == resolx / 2)
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&& (pzfd->middleY == resoly / 2)
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&& (pzfd->mode != WATER_MODE))
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? (goomdata->lineMode / 10) : 0, goomdata->p2, goomdata->agoom - 15);
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return_val = goomdata->p2;
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tmp = goomdata->p1;
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goomdata->p1 = goomdata->p2;
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goomdata->p2 = tmp;
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/* affichage et swappage des buffers.. */
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goomdata->cycle++;
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/* tous les 100 cycles : vérifier si le taux de goom est correct */
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/* et le modifier sinon.. */
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if (!(goomdata->cycle % 100)) {
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if (goomdata->totalgoom > 15) {
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/* printf ("less gooms\n") ; */
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goomdata->goomlimit++;
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} else {
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if ((goomdata->totalgoom == 0) && (goomdata->goomlimit > 1))
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goomdata->goomlimit--;
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}
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goomdata->totalgoom = 0;
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}
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return return_val;
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}
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void
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goom_close (GoomData * goomdata)
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{
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if (goomdata->pixel != NULL)
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free (goomdata->pixel);
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if (goomdata->back != NULL)
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free (goomdata->back);
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if (goomdata->zfd != NULL) {
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zoomFilterDestroy (goomdata->zfd);
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goomdata->zfd = NULL;
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}
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goomdata->pixel = goomdata->back = NULL;
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RAND_CLOSE (goomdata);
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}
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