/
filters.c
758 lines (617 loc) · 18.5 KB
/
filters.c
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/* filter.c version 0.7
* contient les filtres applicable a un buffer
* creation : 01/10/2000
* -ajout de sinFilter()
* -ajout de zoomFilter()
* -copie de zoomFilter() en zoomFilterRGB(), gérant les 3 couleurs
* -optimisation de sinFilter (utilisant une table de sin)
* -asm
* -optimisation de la procedure de génération du buffer de transformation
* la vitesse est maintenant comprise dans [0..128] au lieu de [0..100]
*/
//#define _DEBUG_PIXEL;
#include "filters.h"
#include "graphic.h"
#include "goom_tools.h"
#include <stdlib.h>
#include <math.h>
#include <stdio.h>
#include <inttypes.h>
#ifdef MMX
#define USE_ASM
#endif
#ifdef POWERPC
#define USE_ASM
#endif
#define EFFECT_DISTORS 4
#define EFFECT_DISTORS_SL 2
extern volatile guint32 resolx;
extern volatile guint32 c_resoly;
void c_zoom (unsigned int *expix1, unsigned int *expix2, unsigned int prevX, unsigned int prevY, const signed int *brutS, const signed int *brutD);
/* Prototype to keep gcc from spewing warnings */
static void select_zoom_filter (void);
#ifdef MMX
void zoom_filter_xmmx (int prevX, int prevY, unsigned int *expix1, unsigned int *expix2, int *brutS, int *brutD, int buffratio, int precalCoef[16][16]);
int zoom_filter_xmmx_supported (void);
void zoom_filter_mmx (int prevX, int prevY, unsigned int *expix1, unsigned int *expix2, int *brutS, int *brutD, int buffratio, int precalCoef[16][16]);
int zoom_filter_mmx_supported (void);
static int zf_use_xmmx = 0;
static int zf_use_mmx = 0;
static void select_zoom_filter (void) {
static int s_firsttime = 1;
if (s_firsttime){
if (zoom_filter_xmmx_supported()) {
zf_use_xmmx = 1;
printf ("Extended MMX detected. Using the fastest method !\n");
}
else if (zoom_filter_mmx_supported()) {
zf_use_mmx = 1;
printf ("MMX detected. Using fast method !\n");
}
else {
printf ("Too bad ! No MMX detected.\n");
}
s_firsttime = 0;
}
}
#else /* MMX */
static void select_zoom_filter (void) {
static int firsttime = 1;
if (firsttime) {
printf ("No MMX support compiled in\n");
firsttime = 0;
}
}
#endif /* MMX */
guint32 mmx_zoom_size;
#ifdef USE_ASM
#ifdef POWERPC
#include "altivec.h"
extern unsigned int useAltivec;
extern const void ppc_zoom (unsigned int *frompixmap, unsigned int *topixmap, unsigned int sizex, unsigned int sizey, unsigned int *brutS, unsigned int *brutD, unsigned int buffratio, int precalCoef[16][16]);
#endif /* PowerPC */
#endif /* ASM */
unsigned int *coeffs = 0, *freecoeffs = 0;
signed int *brutS = 0, *freebrutS = 0; // source
signed int *brutD = 0, *freebrutD = 0; // dest
signed int *brutT = 0, *freebrutT = 0; // temp (en cours de génération)
// TODO : virer
guint32 *expix1 = 0; // pointeur exporte vers p1
guint32 *expix2 = 0; // pointeur exporte vers p2
// fin TODO
guint32 zoom_width;
unsigned int prevX = 0, prevY = 0;
static int sintable[0x10000];
static int vitesse = 127;
static char theMode = AMULETTE_MODE;
static int waveEffect = 0;
static int hypercosEffect = 0;
static int vPlaneEffect = 0;
static int hPlaneEffect = 0;
static char noisify = 2;
static int middleX, middleY;
//static unsigned char sqrtperte = 16 ;
/** modif by jeko : fixedpoint : buffration = (16:16) (donc 0<=buffration<=2^16) */
//static int buffratio = 0;
int buffratio = 0;
#define BUFFPOINTNB 16
#define BUFFPOINTMASK 0xffff
#define BUFFINCR 0xff
#define sqrtperte 16
// faire : a % sqrtperte <=> a & pertemask
#define PERTEMASK 0xf
// faire : a / sqrtperte <=> a >> PERTEDEC
#define PERTEDEC 4
static int *firedec = 0;
// retourne x>>s , en testant le signe de x
#define ShiftRight(_x,_s) (((_x)<0) ? -(-(_x)>>(_s)) : ((_x)>>(_s)))
/** modif d'optim by Jeko : precalcul des 4 coefs résultant des 2 pos */
int precalCoef[16][16];
/* Prototypes to keep gcc from spewing warnings */
void generatePrecalCoef (void);
void calculatePXandPY (int x, int y, int *px, int *py);
void setPixelRGB (Uint * buffer, Uint x, Uint y, Color c);
void setPixelRGB_ (Uint * buffer, Uint x, Color c);
inline void getPixelRGB (const Uint * buffer, Uint x, Uint y, Color * c);
void getPixelRGB_ (const Uint * buffer, Uint x, Color * c);
void
generatePrecalCoef ()
{
static int s_firstime = 1;
if (s_firstime) {
int coefh, coefv;
s_firstime = 0;
for (coefh = 0; coefh < 16; coefh++) {
for (coefv = 0; coefv < 16; coefv++) {
int i;
int diffcoeffh;
int diffcoeffv;
diffcoeffh = sqrtperte - coefh;
diffcoeffv = sqrtperte - coefv;
// coeffs[myPos] = ((px >> PERTEDEC) + prevX * (py >> PERTEDEC)) <<
// 2;
if (!(coefh || coefv))
i = 255;
else {
int i1, i2, i3, i4;
i1 = diffcoeffh * diffcoeffv;
i2 = coefh * diffcoeffv;
i3 = diffcoeffh * coefv;
i4 = coefh * coefv;
if (i1)
i1--;
if (i2)
i2--;
if (i3)
i3--;
if (i4)
i4--;
i = (i1) | (i2 << 8) | (i3 << 16) | (i4 << 24);
}
precalCoef[coefh][coefv] = i;
}
}
}
}
/*
calculer px et py en fonction de x,y,middleX,middleY et theMode
px et py indique la nouvelle position (en sqrtperte ieme de pixel)
(valeur * 16)
*/
/*inline*/ void
calculatePXandPY (int x, int y, int *px, int *py)
{
if (theMode == WATER_MODE) {
static int s_wave = 0;
static int s_wavesp = 0;
int yy;
yy = y + RAND () % 4 - RAND () % 4 + s_wave / 10;
if (yy < 0)
yy = 0;
if (yy >= (int)c_resoly)
yy = c_resoly - 1;
*px = (x << 4) + firedec[yy] + (s_wave / 10);
*py = (y << 4) + 132 - ((vitesse < 131) ? vitesse : 130);
// NOLINTNEXTLINE(misc-redundant-expression)
s_wavesp += RAND () % 3 - RAND () % 3;
if (s_wave < -10)
s_wavesp += 2;
if (s_wave > 10)
s_wavesp -= 2;
s_wave += (s_wavesp / 10) + RAND () % 3 - RAND () % 3;
if (s_wavesp > 100)
s_wavesp = (s_wavesp * 9) / 10;
}
else {
int dist = 0, vx9, vy9;
int vx, vy;
int ppx, ppy;
int fvitesse = vitesse << 4;
if (noisify) {
// NOLINTNEXTLINE(misc-redundant-expression)
x += RAND () % noisify - RAND () % noisify;
// NOLINTNEXTLINE(misc-redundant-expression)
y += RAND () % noisify - RAND () % noisify;
}
vx = (x - middleX) << 9;
vy = (y - middleY) << 9;
if (hPlaneEffect)
vx += hPlaneEffect * (y - middleY);
// else vx = (x - middleX) << 9 ;
if (vPlaneEffect)
vy += vPlaneEffect * (x - middleX);
// else vy = (y - middleY) << 9 ;
if (waveEffect) {
fvitesse *=
1024 +
ShiftRight (sintable
[(unsigned short) (dist * 0xffff + EFFECT_DISTORS)], 6);
fvitesse /= 1024;
}
if (hypercosEffect) {
vx += ShiftRight (sintable[(-vy + dist) & 0xffff], 1);
vy += ShiftRight (sintable[(vx + dist) & 0xffff], 1);
}
vx9 = ShiftRight (vx, 9);
vy9 = ShiftRight (vy, 9);
dist = vx9 * vx9 + vy9 * vy9;
switch (theMode) {
case WAVE_MODE:
fvitesse *=
1024 +
ShiftRight (sintable
[(unsigned short) (dist * 0xffff * EFFECT_DISTORS)], 6);
fvitesse>>=10;///=1024;
break;
case CRYSTAL_BALL_MODE:
fvitesse += (dist >> (10-EFFECT_DISTORS_SL));
break;
case AMULETTE_MODE:
fvitesse -= (dist >> (4 - EFFECT_DISTORS_SL));
break;
case SCRUNCH_MODE:
fvitesse -= (dist >> (10 - EFFECT_DISTORS_SL));
break;
case HYPERCOS1_MODE:
vx = vx + ShiftRight (sintable[(-vy + dist) & 0xffff], 1);
vy = vy + ShiftRight (sintable[(vx + dist) & 0xffff], 1);
break;
case HYPERCOS2_MODE:
vx =
vx + ShiftRight (sintable[(-ShiftRight (vy, 1) + dist) & 0xffff], 0);
vy =
vy + ShiftRight (sintable[(ShiftRight (vx, 1) + dist) & 0xffff], 0);
fvitesse = 128 << 4;
break;
case YONLY_MODE:
fvitesse *= 1024 + ShiftRight (sintable[vy & 0xffff], 6);
fvitesse >>= 10;
break;
case SPEEDWAY_MODE:
fvitesse -= (ShiftRight(vy,10-EFFECT_DISTORS_SL));
break;
}
if (fvitesse < -3024)
fvitesse = -3024;
if (vx < 0) // pb avec decalage sur nb negatif
ppx = -(-(vx * fvitesse) >> 16);
/* 16 = 9 + 7 (7 = nb chiffre virgule de vitesse * (v = 128 => immobile)
* * * * * 9 = nb chiffre virgule de vx) */
else
ppx = ((vx * fvitesse) >> 16);
if (vy < 0)
ppy = -(-(vy * fvitesse) >> 16);
else
ppy = ((vy * fvitesse) >> 16);
*px = (middleX << 4) + ppx;
*py = (middleY << 4) + ppy;
}
}
//#define _DEBUG
/*inline*/ void
setPixelRGB (Uint * buffer, Uint x, Uint y, Color c)
{
// buffer[ y*WIDTH + x ] = (c.r<<16)|(c.v<<8)|c.b
#ifdef _DEBUG_PIXEL
if (x + y * resolx >= resolx * resoly) {
fprintf (stderr, "setPixel ERROR : hors du tableau... %i, %i\n", x, y);
// exit (1) ;
}
#endif
buffer[y * resolx + x] =
(c.b << (BLEU * 8)) | (c.v << (VERT * 8)) | (c.r << (ROUGE * 8));
}
/*inline*/ void
setPixelRGB_ (Uint * buffer, Uint x, Color c)
{
#ifdef _DEBUG
if (x >= resolx * c_resoly) {
printf ("setPixel ERROR : hors du tableau... %i\n", x);
// exit (1) ;
}
#endif
buffer[x] = (c.r << (ROUGE * 8)) | (c.v << (VERT * 8)) | c.b << (BLEU * 8);
}
inline void
getPixelRGB (const Uint * buffer, Uint x, Uint y, Color * c)
{
// register unsigned char *tmp8;
unsigned int i;
#ifdef _DEBUG
if (x + y * resolx >= resolx * c_resoly) {
printf ("getPixel ERROR : hors du tableau... %i, %i\n", x, y);
// exit (1) ;
}
#endif
/* ATTENTION AU PETIT INDIEN */
i = *(buffer + (x + y * resolx));
c->b = (i >> (BLEU * 8)) & 0xff;
c->v = (i >> (VERT * 8)) & 0xff;
c->r = (i >> (ROUGE * 8)) & 0xff;
}
/*inline*/ void
getPixelRGB_ (const Uint * buffer, Uint x, Color * c)
{
register unsigned char *tmp8;
#ifdef _DEBUG
if (x >= resolx * c_resoly) {
printf ("getPixel ERROR : hors du tableau... %i\n", x);
// exit (1) ;
}
#endif
#ifdef __BIG_ENDIAN__
c->b = *(unsigned char *) (tmp8 = (unsigned char *) (buffer + x));
c->r = *(unsigned char *) (++tmp8);
c->v = *(unsigned char *) (++tmp8);
c->b = *(unsigned char *) (++tmp8);
#else
/* ATTENTION AU PETIT INDIEN */
c->b = *(unsigned char *) (tmp8 = (unsigned char *) (buffer + x));
c->v = *(unsigned char *) (++tmp8);
c->r = *(unsigned char *) (++tmp8);
// *c = (Color) buffer[x+y*WIDTH] ;
#endif
}
void c_zoom (unsigned int *lexpix1, unsigned int *lexpix2,
unsigned int lprevX, unsigned int lprevY,
const signed int *lbrutS, const signed int *lbrutD)
{
int myPos;
Color couleur;
// unsigned int coefv, coefh;
unsigned int ax = (lprevX - 1) << PERTEDEC, ay = (lprevY - 1) << PERTEDEC;
int bufsize = lprevX * lprevY * 2;
int bufwidth = lprevX;
lexpix1[0]=lexpix1[lprevX-1]=lexpix1[lprevX*lprevY-1]=lexpix1[lprevX*lprevY-lprevX]=0;
for (myPos = 0; myPos < bufsize; myPos += 2) {
Color col1, col2, col3, col4;
int c1, c2, c3, c4, px, py;
int pos;
int lcoeffs;
int brutSmypos = lbrutS[myPos];
int myPos2;
myPos2 = myPos + 1;
px = brutSmypos + (((lbrutD[myPos] - brutSmypos) * buffratio) >> BUFFPOINTNB);
brutSmypos = lbrutS[myPos2];
py = brutSmypos + (((lbrutD[myPos2] - brutSmypos) * buffratio) >> BUFFPOINTNB);
if (px < 0)
px = 0;
if (py < 0)
py = 0;
pos = ((px >> PERTEDEC) + lprevX * (py >> PERTEDEC));
// coef en modulo 15
lcoeffs = precalCoef[px & PERTEMASK][py & PERTEMASK];
if ((py >= (int)ay) || (px >= (int)ax)) {
pos = lcoeffs = 0;
}
getPixelRGB_ (lexpix1, pos, &col1);
getPixelRGB_ (lexpix1, pos + 1, &col2);
getPixelRGB_ (lexpix1, pos + bufwidth, &col3);
getPixelRGB_ (lexpix1, pos + bufwidth + 1, &col4);
c1 = lcoeffs;
c2 = (c1 & 0x0000ff00) >> 8;
c3 = (c1 & 0x00ff0000) >> 16;
c4 = (c1 & 0xff000000) >> 24;
c1 = c1 & 0xff;
couleur.r = col1.r * c1 + col2.r * c2 + col3.r * c3 + col4.r * c4;
if (couleur.r > 5)
couleur.r -= 5;
couleur.r >>= 8;
couleur.v = col1.v * c1 + col2.v * c2 + col3.v * c3 + col4.v * c4;
if (couleur.v > 5)
couleur.v -= 5;
couleur.v >>= 8;
couleur.b = col1.b * c1 + col2.b * c2 + col3.b * c3 + col4.b * c4;
if (couleur.b > 5)
couleur.b -= 5;
couleur.b >>= 8;
setPixelRGB_ (lexpix2, myPos >> 1, couleur);
}
}
#ifdef USE_ASM
void setAsmUse (int useIt);
int getAsmUse (void);
static int use_asm = 1;
void
setAsmUse (int useIt)
{
use_asm = useIt;
}
int
getAsmUse ()
{
return use_asm;
}
#endif
/*===============================================================*/
void
zoomFilterFastRGB (Uint * pix1, Uint * pix2, ZoomFilterData * zf, Uint resx, Uint resy, int switchIncr, float switchMult)
{
register Uint x, y;
static unsigned char s_pertedec = 8;
static char s_firstTime = 1;
#define INTERLACE_INCR 16
#define INTERLACE_ADD 9
#define INTERLACE_AND 0xf
static int s_interlaceStart = -2;
expix1 = pix1;
expix2 = pix2;
/** changement de taille **/
if ((prevX != resx) || (prevY != resy)) {
prevX = resx;
prevY = resy;
if (brutS)
free (freebrutS);
brutS = 0;
if (brutD)
free (freebrutD);
brutD = 0;
if (brutT)
free (freebrutT);
brutT = 0;
middleX = resx / 2;
middleY = resy - 1;
s_firstTime = 1;
if (firedec)
free (firedec);
firedec = 0;
}
if (s_interlaceStart != -2)
zf = NULL;
/** changement de config **/
if (zf) {
static char s_reverse = 0; // vitesse inversé..(zoom out)
s_reverse = zf->reverse;
vitesse = zf->vitesse;
if (s_reverse)
vitesse = 256 - vitesse;
s_pertedec = zf->pertedec;
middleX = zf->middleX;
middleY = zf->middleY;
theMode = zf->mode;
hPlaneEffect = zf->hPlaneEffect;
vPlaneEffect = zf->vPlaneEffect;
waveEffect = zf->waveEffect;
hypercosEffect = zf->hypercosEffect;
noisify = zf->noisify;
}
/* Silence a gcc warning */
(void)s_pertedec;
/** generation d'un effet **/
if (s_firstTime || zf) {
// generation d'une table de sinus
if (s_firstTime) {
unsigned short us;
s_firstTime = 0;
generatePrecalCoef ();
select_zoom_filter ();
freebrutS = (signed int *) calloc (resx * resy * 2 + 128, sizeof(signed int));
brutS = (signed int *) ((1 + ((uintptr_t) (freebrutS)) / 128) * 128);
freebrutD = (signed int *) calloc (resx * resy * 2 + 128, sizeof(signed int));
brutD = (signed int *) ((1 + ((uintptr_t) (freebrutD)) / 128) * 128);
freebrutT = (signed int *) calloc (resx * resy * 2 + 128, sizeof(signed int));
brutT = (signed int *) ((1 + ((uintptr_t) (freebrutT)) / 128) * 128);
/** modif here by jeko : plus de multiplications **/
{
int yperte = 0;
int yofs;
for (y = 0, yofs = 0; y < resy; y++, yofs += resx) {
int xofs = yofs << 1;
int xperte = 0;
for (x = 0; x < resx; x++) {
brutS[xofs++] = xperte;
brutS[xofs++] = yperte;
xperte += sqrtperte;
}
yperte += sqrtperte;
}
buffratio = 0;
}
for (us = 0; us < 0xffff; us++) {
sintable[us] =
roundf(1024 * sin ((double) us * 360
/ ((float)sizeof (sintable)
/ sizeof (sintable[0]) - 1)
* 3.141592 / 180));
}
{
int loopv;
firedec = (int *) malloc (prevY * sizeof (int));
for (loopv = prevY; loopv != 0;) {
static int s_decc = 0;
static int s_spdc = 0;
static int s_accel = 0;
loopv--;
firedec[loopv] = s_decc;
s_decc += s_spdc / 10;
// NOLINTNEXTLINE(misc-redundant-expression)
s_spdc += RAND () % 3 - RAND () % 3;
if (s_decc > 4)
s_spdc -= 1;
if (s_decc < -4)
s_spdc += 1;
if (s_spdc > 30)
s_spdc = s_spdc - RAND () % 3 + s_accel / 10;
if (s_spdc < -30)
s_spdc = s_spdc + RAND () % 3 + s_accel / 10;
if (s_decc > 8 && s_spdc > 1)
s_spdc -= RAND () % 3 - 2;
if (s_decc < -8 && s_spdc < -1)
s_spdc += RAND () % 3 + 2;
if (s_decc > 8 || s_decc < -8)
s_decc = s_decc * 8 / 9;
// NOLINTNEXTLINE(misc-redundant-expression)
s_accel += RAND () % 2 - RAND () % 2;
if (s_accel > 20)
s_accel -= 2;
if (s_accel < -20)
s_accel += 2;
}
}
}
s_interlaceStart = 0;
}
// generation du buffer de trans
if (s_interlaceStart==-1) {
/* sauvegarde de l'etat actuel dans la nouvelle source */
y = prevX * prevY * 2;
for (x = 0; x < y; x += 2) {
int brutSmypos = brutS[x];
int x2 = x + 1;
brutS[x] =
brutSmypos + (((brutD[x] - brutSmypos) * buffratio) >> BUFFPOINTNB);
brutSmypos = brutS[x2];
brutS[x2] =
brutSmypos +
(((brutD[x2] - brutSmypos) * buffratio) >> BUFFPOINTNB);
}
buffratio = 0;
}
if (s_interlaceStart==-1) {
signed int * tmp;
tmp = brutD;
brutD=brutT;
brutT=tmp;
tmp = freebrutD;
freebrutD=freebrutT;
freebrutT=tmp;
s_interlaceStart = -2;
}
if (s_interlaceStart>=0) {
int maxEnd = (s_interlaceStart+INTERLACE_INCR);
/* creation de la nouvelle destination */
for (y = (Uint)s_interlaceStart; (y < (Uint)prevY) && (y < (Uint)maxEnd); y++) {
Uint premul_y_prevX = y * prevX * 2;
for (x = 0; x < prevX; x++) {
int px, py;
calculatePXandPY (x, y, &px, &py);
brutT[premul_y_prevX] = px;
brutT[premul_y_prevX + 1] = py;
premul_y_prevX += 2;
}
}
s_interlaceStart += INTERLACE_INCR;
if (y >= prevY-1) s_interlaceStart = -1;
}
if (switchIncr != 0) {
buffratio += switchIncr;
if (buffratio > BUFFPOINTMASK)
buffratio = BUFFPOINTMASK;
}
if (switchMult != 1.0F) {
buffratio =
(int) ((float) BUFFPOINTMASK * (1.0F - switchMult) +
(float) buffratio * switchMult);
}
zoom_width = prevX;
mmx_zoom_size = prevX * prevY;
#ifdef USE_ASM
#ifdef MMX
if (zf_use_xmmx)
zoom_filter_xmmx (prevX, prevY,expix1, expix2,
brutS, brutD, buffratio, precalCoef);
else if (zf_use_mmx)
zoom_filter_mmx (prevX, prevY,expix1, expix2,
brutS, brutD, buffratio, precalCoef);
else c_zoom (expix1, expix2, prevX, prevY, brutS, brutD);
#endif
#ifdef POWERPC
ppc_zoom (expix1, expix2, prevX, prevY, brutS, brutD, buffratio,precalCoef);
#endif
#else
c_zoom (expix1, expix2, prevX, prevY, brutS, brutD);
#endif
}
void
pointFilter (Uint * pix1, Color c, float t1, float t2, float t3, float t4, Uint cycle)
{
Uint x = (Uint) ((int) (resolx/2) + (int) (t1 * cosf ((float) cycle / t3)));
Uint y = (Uint) ((int) (c_resoly/2) + (int) (t2 * sinf ((float) cycle / t4)));
if ((x > 1) && (y > 1) && (x < resolx - 2) && (y < c_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);
}
}