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6cc1c73d2b
Original commit message from CVS: don't mix tabs and spaces
551 lines
13 KiB
C
551 lines
13 KiB
C
/* filter.c version 0.7
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* contient les filtres applicable a un buffer
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* creation : 01/10/2000
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* -ajout de sinFilter()
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* -ajout de zoomFilter()
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* -copie de zoomFilter() en zoomFilterRGB(), gérant les 3 couleurs
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* -optimisation de sinFilter (utilisant une table de sin)
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* -asm
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* -optimisation de la procedure de génération du buffer de transformation
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* la vitesse est maintenant comprise dans [0..128] au lieu de [0..100]
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*/
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/*#define _DEBUG_PIXEL; */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "filters.h"
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#include "graphic.h"
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#include "goom_tools.h"
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#include <stdlib.h>
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#include <math.h>
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#include <stdio.h>
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#ifdef MMX
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#define USE_ASM
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#endif
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#ifdef POWERPC
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#define USE_ASM
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#endif
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#ifdef USE_ASM
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#define EFFECT_DISTORS 4
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#else
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#define EFFECT_DISTORS 10
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#endif
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extern volatile guint32 resolx;
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extern volatile guint32 resoly;
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#ifdef USE_ASM
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#ifdef MMX
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int mmx_zoom ();
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guint32 mmx_zoom_size;
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#endif /* MMX */
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#ifdef POWERPC
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extern unsigned int useAltivec;
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extern void ppc_zoom (void);
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extern void ppc_zoom_altivec (void);
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unsigned int ppcsize4;
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#endif /* PowerPC */
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unsigned int *coeffs = 0, *freecoeffs = 0;
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guint32 *expix1 = 0; /* pointeur exporte vers p1 */
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guint32 *expix2 = 0; /* pointeur exporte vers p2 */
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guint32 zoom_width;
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#endif /* ASM */
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static int sintable[0xffff];
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static int vitesse = 127;
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static char theMode = AMULETTE_MODE;
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static int vPlaneEffect = 0;
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static int hPlaneEffect = 0;
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static char noisify = 2;
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static int middleX, middleY;
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static unsigned char sqrtperte = 16;
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static int *firedec = 0;
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/* retourne x>>s , en testant le signe de x */
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inline int
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ShiftRight (int x, const unsigned char s)
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{
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if (x < 0)
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return -(-x >> s);
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else
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return x >> s;
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}
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/*
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calculer px et py en fonction de x,y,middleX,middleY et theMode
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px et py indique la nouvelle position (en sqrtperte ieme de pixel)
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(valeur * 16)
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*/
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void
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calculatePXandPY (int x, int y, int *px, int *py)
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{
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if (theMode == WATER_MODE) {
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static int wave = 0;
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static int wavesp = 0;
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int yy;
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yy = y + RAND () % 4 + wave / 10;
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yy -= RAND () % 4;
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if (yy < 0)
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yy = 0;
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if (yy >= resoly)
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yy = resoly - 1;
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*px = (x << 4) + firedec[yy] + (wave / 10);
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*py = (y << 4) + 132 - ((vitesse < 132) ? vitesse : 131);
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wavesp += RAND () % 3;
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wavesp -= RAND () % 3;
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if (wave < -10)
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wavesp += 2;
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if (wave > 10)
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wavesp -= 2;
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wave += (wavesp / 10) + RAND () % 3;
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wave -= RAND () % 3;
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if (wavesp > 100)
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wavesp = (wavesp * 9) / 10;
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} else {
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int dist;
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register int vx, vy;
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int fvitesse = vitesse << 4;
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if (noisify) {
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x += RAND () % noisify;
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x -= RAND () % noisify;
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y += RAND () % noisify;
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y -= RAND () % noisify;
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}
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if (hPlaneEffect)
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vx = ((x - middleX) << 9) + hPlaneEffect * (y - middleY);
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else
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vx = (x - middleX) << 9;
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if (vPlaneEffect)
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vy = ((y - middleY) << 9) + vPlaneEffect * (x - middleX);
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else
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vy = (y - middleY) << 9;
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switch (theMode) {
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case WAVE_MODE:
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dist =
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ShiftRight (vx, 9) * ShiftRight (vx, 9) + ShiftRight (vy,
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9) * ShiftRight (vy, 9);
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fvitesse *=
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1024 +
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ShiftRight (sintable[(unsigned short) (0xffff * dist *
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EFFECT_DISTORS)], 6);
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fvitesse /= 1024;
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break;
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case CRYSTAL_BALL_MODE:
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dist =
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ShiftRight (vx, 9) * ShiftRight (vx, 9) + ShiftRight (vy,
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9) * ShiftRight (vy, 9);
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fvitesse += (dist * EFFECT_DISTORS >> 10);
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break;
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case AMULETTE_MODE:
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dist =
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ShiftRight (vx, 9) * ShiftRight (vx, 9) + ShiftRight (vy,
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9) * ShiftRight (vy, 9);
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fvitesse -= (dist * EFFECT_DISTORS >> 4);
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break;
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case SCRUNCH_MODE:
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dist =
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ShiftRight (vx, 9) * ShiftRight (vx, 9) + ShiftRight (vy,
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9) * ShiftRight (vy, 9);
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fvitesse -= (dist * EFFECT_DISTORS >> 9);
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break;
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}
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if (vx < 0)
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*px = (middleX << 4) - (-(vx * fvitesse) >> 16);
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else
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*px = (middleX << 4) + ((vx * fvitesse) >> 16);
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if (vy < 0)
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*py = (middleY << 4) - (-(vy * fvitesse) >> 16);
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else
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*py = (middleY << 4) + ((vy * fvitesse) >> 16);
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}
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}
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/*#define _DEBUG */
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inline void
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setPixelRGB (Uint * buffer, Uint x, Uint y, Color c)
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{
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/* buffer[ y*WIDTH + x ] = (c.r<<16)|(c.v<<8)|c.b */
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#ifdef _DEBUG_PIXEL
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if (x + y * resolx >= resolx * resoly) {
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fprintf (stderr, "setPixel ERROR : hors du tableau... %i, %i\n", x, y);
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/*exit (1) ; */
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}
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#endif
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#ifdef USE_DGA
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buffer[y * resolx + x] = (c.b << 16) | (c.v << 8) | c.r;
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#else
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buffer[y * resolx + x] = (c.r << 16) | (c.v << 8) | c.b;
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#endif
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}
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inline void
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setPixelRGB_ (Uint * buffer, Uint x, Color c)
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{
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#ifdef _DEBUG
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if (x >= resolx * resoly) {
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printf ("setPixel ERROR : hors du tableau... %i, %i\n", x, y);
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exit (1);
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}
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#endif
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#ifdef USE_DGA
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buffer[x] = (c.b << 16) | (c.v << 8) | c.r;
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#else
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buffer[x] = (c.r << 16) | (c.v << 8) | c.b;
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#endif
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}
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inline void
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getPixelRGB (Uint * buffer, Uint x, Uint y, Color * c)
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{
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register unsigned char *tmp8;
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#ifdef _DEBUG
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if (x + y * resolx >= resolx * resoly) {
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printf ("getPixel ERROR : hors du tableau... %i, %i\n", x, y);
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exit (1);
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}
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#endif
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#ifdef __BIG_ENDIAN__
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c->b = *(unsigned char *) (tmp8 =
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(unsigned char *) (buffer + (x + y * resolx)));
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c->r = *(unsigned char *) (++tmp8);
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c->v = *(unsigned char *) (++tmp8);
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c->b = *(unsigned char *) (++tmp8);
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#else
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/* ATTENTION AU PETIT INDIEN */
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c->b = *(unsigned char *) (tmp8 =
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(unsigned char *) (buffer + (x + y * resolx)));
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c->v = *(unsigned char *) (++tmp8);
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c->r = *(unsigned char *) (++tmp8);
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/* *c = (Color) buffer[x+y*WIDTH] ; */
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#endif
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}
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inline void
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getPixelRGB_ (Uint * buffer, Uint x, Color * c)
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{
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register unsigned char *tmp8;
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#ifdef _DEBUG
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if (x >= resolx * resoly) {
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printf ("getPixel ERROR : hors du tableau... %i\n", x);
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exit (1);
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}
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#endif
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#ifdef __BIG_ENDIAN__
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c->b = *(unsigned char *) (tmp8 = (unsigned char *) (buffer + x));
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c->r = *(unsigned char *) (++tmp8);
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c->v = *(unsigned char *) (++tmp8);
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c->b = *(unsigned char *) (++tmp8);
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#else
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/* ATTENTION AU PETIT INDIEN */
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c->b = *(unsigned char *) (tmp8 = (unsigned char *) (buffer + x));
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c->v = *(unsigned char *) (++tmp8);
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c->r = *(unsigned char *) (++tmp8);
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/* *c = (Color) buffer[x+y*WIDTH] ; */
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#endif
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}
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/*===============================================================*/
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void
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zoomFilterFastRGB (Uint * pix1,
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Uint * pix2, ZoomFilterData * zf, Uint resx, Uint resy)
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{
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static guint32 prevX = 0, prevY = 0;
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static char reverse = 0; /*vitesse inversé..(zoom out) */
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/* static int perte = 100; // 100 = normal */
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static unsigned char pertedec = 8;
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static char firstTime = 1;
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Uint x, y;
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/* static unsigned int prevX = 0, prevY = 0; */
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#ifdef USE_ASM
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expix1 = pix1;
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expix2 = pix2;
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#else
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Color couleur;
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Color col1, col2, col3, col4;
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Uint position;
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static unsigned int *pos10 = 0;
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static unsigned int *c1 = 0, *c2 = 0, *c3 = 0, *c4 = 0;
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#endif
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if ((prevX != resx) || (prevY != resy)) {
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prevX = resx;
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prevY = resy;
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#ifndef USE_ASM
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if (c1)
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free (c1);
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if (c2)
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free (c2);
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if (c3)
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free (c3);
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if (c4)
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free (c4);
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if (pos10)
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free (pos10);
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c1 = c2 = c3 = c4 = pos10 = 0;
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#else
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if (coeffs)
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free (freecoeffs);
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coeffs = 0;
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#endif
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middleX = resx / 2;
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middleY = resy - 1;
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firstTime = 1;
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if (firedec)
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free (firedec);
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firedec = 0;
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}
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if (zf) {
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reverse = zf->reverse;
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vitesse = zf->vitesse;
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if (reverse)
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vitesse = 256 - vitesse;
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#ifndef USE_ASM
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sqrtperte = zf->sqrtperte;
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#endif
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pertedec = zf->pertedec;
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middleX = zf->middleX;
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middleY = zf->middleY;
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theMode = zf->mode;
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hPlaneEffect = zf->hPlaneEffect;
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vPlaneEffect = zf->vPlaneEffect;
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noisify = zf->noisify;
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}
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if (firstTime || zf) {
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/* generation d'une table de sinus */
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if (firstTime) {
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unsigned short us;
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firstTime = 0;
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#ifdef USE_ASM
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freecoeffs = (unsigned int *)
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malloc (resx * resy * 2 * sizeof (unsigned int) + 128);
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coeffs = (guint32 *) ((1 + ((unsigned int) (freecoeffs)) / 128) * 128);
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#else
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pos10 = (unsigned int *) malloc (resx * resy * sizeof (unsigned int));
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c1 = (unsigned int *) malloc (resx * resy * sizeof (unsigned int));
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c2 = (unsigned int *) malloc (resx * resy * sizeof (unsigned int));
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c3 = (unsigned int *) malloc (resx * resy * sizeof (unsigned int));
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c4 = (unsigned int *) malloc (resx * resy * sizeof (unsigned int));
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#endif
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for (us = 0; us < 0xffff; us++) {
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sintable[us] = (int) (1024.0f * sin (us * 2 * 3.31415f / 0xffff));
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}
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{
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int loopv;
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firedec = (int *) malloc (prevY * sizeof (int));
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for (loopv = prevY; loopv != 0;) {
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static int decc = 0;
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static int spdc = 0;
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static int accel = 0;
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loopv--;
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firedec[loopv] = decc;
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decc += spdc / 10;
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spdc += RAND () % 3;
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spdc -= RAND () % 3;
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if (decc > 4)
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spdc -= 1;
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if (decc < -4)
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spdc += 1;
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if (spdc > 30)
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spdc = spdc - RAND () % 3 + accel / 10;
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if (spdc < -30)
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spdc = spdc + RAND () % 3 + accel / 10;
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if (decc > 8 && spdc > 1)
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spdc -= RAND () % 3 - 2;
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if (decc < -8 && spdc < -1)
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spdc += RAND () % 3 + 2;
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if (decc > 8 || decc < -8)
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decc = decc * 8 / 9;
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accel += RAND () % 2;
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accel -= RAND () % 2;
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if (accel > 20)
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accel -= 2;
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if (accel < -20)
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accel += 2;
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}
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}
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}
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/* generation du buffer */
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for (y = 0; y < prevY; y++)
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for (x = 0; x < prevX; x++) {
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int px, py;
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unsigned char coefv, coefh;
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/* calculer px et py en fonction de */
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/* x,y,middleX,middleY et theMode */
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calculatePXandPY (x, y, &px, &py);
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if ((px == x << 4) && (py == y << 4))
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py += 8;
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if ((py < 0) || (px < 0) ||
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(py >= (prevY - 1) * sqrtperte) ||
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(px >= (prevX - 1) * sqrtperte)) {
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#ifdef USE_ASM
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coeffs[(y * prevX + x) * 2] = 0;
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coeffs[(y * prevX + x) * 2 + 1] = 0;
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#else
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pos10[y * prevX + x] = 0;
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c1[y * prevX + x] = 0;
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c2[y * prevX + x] = 0;
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c3[y * prevX + x] = 0;
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c4[y * prevX + x] = 0;
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#endif
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} else {
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int npx10;
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int npy10;
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int pos;
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npx10 = (px / sqrtperte);
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npy10 = (py / sqrtperte);
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/* if (npx10 >= prevX) fprintf(stderr,"error npx:%d",npx10);
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if (npy10 >= prevY) fprintf(stderr,"error npy:%d",npy10);
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*/
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coefh = px % sqrtperte;
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coefv = py % sqrtperte;
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#ifdef USE_ASM
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pos = (y * prevX + x) * 2;
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coeffs[pos] = (npx10 + prevX * npy10) * 4;
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if (!(coefh || coefv))
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coeffs[pos + 1] = (sqrtperte * sqrtperte - 1);
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else
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coeffs[pos + 1] = ((sqrtperte - coefh) * (sqrtperte - coefv));
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coeffs[pos + 1] |= (coefh * (sqrtperte - coefv)) << 8;
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coeffs[pos + 1] |= ((sqrtperte - coefh) * coefv) << 16;
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coeffs[pos + 1] |= (coefh * coefv) << 24;
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#else
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pos = y * prevX + x;
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pos10[pos] = npx10 + prevX * npy10;
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if (!(coefh || coefv))
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c1[pos] = sqrtperte * sqrtperte - 1;
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else
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c1[pos] = (sqrtperte - coefh) * (sqrtperte - coefv);
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c2[pos] = coefh * (sqrtperte - coefv);
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c3[pos] = (sqrtperte - coefh) * coefv;
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c4[pos] = coefh * coefv;
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#endif
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}
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}
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}
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#ifdef USE_ASM
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#ifdef MMX
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zoom_width = prevX;
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mmx_zoom_size = prevX * prevY;
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mmx_zoom ();
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#endif
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#ifdef POWERPC
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zoom_width = prevX;
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if (useAltivec) {
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ppcsize4 = ((unsigned int) (prevX * prevY)) / 4;
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ppc_zoom_altivec ();
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} else {
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ppcsize4 = ((unsigned int) (prevX * prevY));
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ppc_zoom ();
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}
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#endif
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#else
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for (position = 0; position < prevX * prevY; position++) {
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getPixelRGB_ (pix1, pos10[position], &col1);
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getPixelRGB_ (pix1, pos10[position] + 1, &col2);
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getPixelRGB_ (pix1, pos10[position] + prevX, &col3);
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getPixelRGB_ (pix1, pos10[position] + prevX + 1, &col4);
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couleur.r = col1.r * c1[position]
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+ col2.r * c2[position]
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+ col3.r * c3[position]
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+ col4.r * c4[position];
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couleur.r >>= pertedec;
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couleur.v = col1.v * c1[position]
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+ col2.v * c2[position]
|
|
+ col3.v * c3[position]
|
|
+ col4.v * c4[position];
|
|
couleur.v >>= pertedec;
|
|
|
|
couleur.b = col1.b * c1[position]
|
|
+ col2.b * c2[position]
|
|
+ col3.b * c3[position]
|
|
+ col4.b * c4[position];
|
|
couleur.b >>= pertedec;
|
|
|
|
setPixelRGB_ (pix2, position, couleur);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
|
|
void
|
|
pointFilter (Uint * pix1, Color c,
|
|
float t1, float t2, float t3, float t4, Uint cycle)
|
|
{
|
|
Uint x = (Uint) ((int) middleX + (int) (t1 * cos ((float) cycle / t3)));
|
|
Uint y = (Uint) ((int) middleY + (int) (t2 * sin ((float) cycle / t4)));
|
|
|
|
if ((x > 1) && (y > 1) && (x < resolx - 2) && (y < resoly - 2)) {
|
|
setPixelRGB (pix1, x + 1, y, c);
|
|
setPixelRGB (pix1, x, y + 1, c);
|
|
setPixelRGB (pix1, x + 1, y + 1, WHITE);
|
|
setPixelRGB (pix1, x + 2, y + 1, c);
|
|
setPixelRGB (pix1, x + 1, y + 2, c);
|
|
}
|
|
}
|