mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-21 15:56:42 +00:00
291 lines
7.5 KiB
C
291 lines
7.5 KiB
C
/* mmx.c
|
|
|
|
MultiMedia eXtensions GCC interface library for IA32.
|
|
|
|
To use this library, simply include this header file
|
|
and compile with GCC. You MUST have inlining enabled
|
|
in order for mmx_ok() to work; this can be done by
|
|
simply using -O on the GCC command line.
|
|
|
|
Compiling with -DMMX_TRACE will cause detailed trace
|
|
output to be sent to stderr for each mmx operation.
|
|
This adds lots of code, and obviously slows execution to
|
|
a crawl, but can be very useful for debugging.
|
|
|
|
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY
|
|
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
|
|
LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
AND FITNESS FOR ANY PARTICULAR PURPOSE.
|
|
|
|
1997-99 by H. Dietz and R. Fisher
|
|
|
|
Notes:
|
|
It appears that the latest gas has the pand problem fixed, therefore
|
|
I'll undefine BROKEN_PAND by default.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "goom_config.h"
|
|
|
|
#ifdef HAVE_MMX
|
|
|
|
#define BUFFPOINTNB 16
|
|
#define BUFFPOINTMASK 0xffff
|
|
#define BUFFINCR 0xff
|
|
|
|
#include "mmx.h"
|
|
#include "goom_graphic.h"
|
|
|
|
#define sqrtperte 16
|
|
// faire : a % sqrtperte <=> a & pertemask
|
|
#define PERTEMASK 0xf
|
|
// faire : a / sqrtperte <=> a >> PERTEDEC
|
|
#define PERTEDEC 4
|
|
|
|
int
|
|
mmx_supported (void)
|
|
{
|
|
return (mm_support () & 0x1);
|
|
}
|
|
|
|
void
|
|
zoom_filter_mmx (int prevX, int prevY,
|
|
Pixel * expix1, Pixel * expix2,
|
|
int *brutS, int *brutD, int buffratio, int precalCoef[16][16])
|
|
{
|
|
unsigned int ax = (prevX - 1) << PERTEDEC, ay = (prevY - 1) << PERTEDEC;
|
|
|
|
int bufsize = prevX * prevY;
|
|
int loop;
|
|
|
|
__asm__ __volatile__ ("pxor %mm7,%mm7");
|
|
|
|
for (loop = 0; loop < bufsize; loop++) {
|
|
/* int couleur; */
|
|
int px, py;
|
|
int pos;
|
|
int coeffs;
|
|
|
|
int myPos = loop << 1, myPos2 = myPos + 1;
|
|
int brutSmypos = brutS[myPos];
|
|
|
|
px = brutSmypos + (((brutD[myPos] -
|
|
brutSmypos) * buffratio) >> BUFFPOINTNB);
|
|
brutSmypos = brutS[myPos2];
|
|
py = brutSmypos + (((brutD[myPos2] -
|
|
brutSmypos) * buffratio) >> BUFFPOINTNB);
|
|
|
|
if ((py >= ay) || (px >= ax)) {
|
|
pos = coeffs = 0;
|
|
} else {
|
|
pos = ((px >> PERTEDEC) + prevX * (py >> PERTEDEC));
|
|
// coef en modulo 15
|
|
coeffs = precalCoef[px & PERTEMASK][py & PERTEMASK];
|
|
}
|
|
|
|
__asm__ __volatile__ ("movd %2, %%mm6 \n\t"
|
|
/* recuperation des deux premiers pixels dans mm0 et mm1 */
|
|
"movq (%3,%1,4), %%mm0 \n\t" /* b1-v1-r1-a1-b2-v2-r2-a2 */
|
|
"movq %%mm0, %%mm1 \n\t" /* b1-v1-r1-a1-b2-v2-r2-a2 */
|
|
/* depackage du premier pixel */
|
|
"punpcklbw %%mm7, %%mm0 \n\t" /* 00-b2-00-v2-00-r2-00-a2 */
|
|
"movq %%mm6, %%mm5 \n\t" /* ??-??-??-??-c4-c3-c2-c1 */
|
|
/* depackage du 2ieme pixel */
|
|
"punpckhbw %%mm7, %%mm1 \n\t" /* 00-b1-00-v1-00-r1-00-a1 */
|
|
/* extraction des coefficients... */
|
|
"punpcklbw %%mm5, %%mm6 \n\t" /* c4-c4-c3-c3-c2-c2-c1-c1 */
|
|
"movq %%mm6, %%mm4 \n\t" /* c4-c4-c3-c3-c2-c2-c1-c1 */
|
|
"movq %%mm6, %%mm5 \n\t" /* c4-c4-c3-c3-c2-c2-c1-c1 */
|
|
"punpcklbw %%mm5, %%mm6 \n\t" /* c2-c2-c2-c2-c1-c1-c1-c1 */
|
|
"punpckhbw %%mm5, %%mm4 \n\t" /* c4-c4-c4-c4-c3-c3-c3-c3 */
|
|
"movq %%mm6, %%mm3 \n\t" /* c2-c2-c2-c2-c1-c1-c1-c1 */
|
|
"punpcklbw %%mm7, %%mm6 \n\t" /* 00-c1-00-c1-00-c1-00-c1 */
|
|
"punpckhbw %%mm7, %%mm3 \n\t" /* 00-c2-00-c2-00-c2-00-c2 */
|
|
/* multiplication des pixels par les coefficients */
|
|
"pmullw %%mm6, %%mm0 \n\t" /* c1*b2-c1*v2-c1*r2-c1*a2 */
|
|
"pmullw %%mm3, %%mm1 \n\t" /* c2*b1-c2*v1-c2*r1-c2*a1 */
|
|
"paddw %%mm1, %%mm0 \n\t"
|
|
/* ...extraction des 2 derniers coefficients */
|
|
"movq %%mm4, %%mm5 \n\t" /* c4-c4-c4-c4-c3-c3-c3-c3 */
|
|
"punpcklbw %%mm7, %%mm4 \n\t" /* 00-c3-00-c3-00-c3-00-c3 */
|
|
"punpckhbw %%mm7, %%mm5 \n\t" /* 00-c4-00-c4-00-c4-00-c4 */
|
|
/* ajouter la longueur de ligne a esi */
|
|
"addl 8(%%ebp),%1 \n\t"
|
|
/* recuperation des 2 derniers pixels */
|
|
"movq (%3,%1,4), %%mm1 \n\t" "movq %%mm1, %%mm2 \n\t"
|
|
/* depackage des pixels */
|
|
"punpcklbw %%mm7, %%mm1 \n\t" "punpckhbw %%mm7, %%mm2 \n\t"
|
|
/* multiplication pas les coeffs */
|
|
"pmullw %%mm4, %%mm1 \n\t" "pmullw %%mm5, %%mm2 \n\t"
|
|
/* ajout des valeurs obtenues ? la valeur finale */
|
|
"paddw %%mm1, %%mm0 \n\t" "paddw %%mm2, %%mm0 \n\t"
|
|
/* division par 256 = 16+16+16+16, puis repackage du pixel final */
|
|
"psrlw $8, %%mm0 \n\t"
|
|
"packuswb %%mm7, %%mm0 \n\t" "movd %%mm0,%0 \n\t":"=g" (expix2[loop])
|
|
:"r" (pos), "r" (coeffs), "r" (expix1)
|
|
|
|
);
|
|
|
|
emms ();
|
|
}
|
|
}
|
|
|
|
#define DRAWMETHOD_PLUS_MMX(_out,_backbuf,_col) \
|
|
{ \
|
|
movd_m2r(_backbuf, mm0); \
|
|
paddusb_m2r(_col, mm0); \
|
|
movd_r2m(mm0, _out); \
|
|
}
|
|
|
|
#define DRAWMETHOD DRAWMETHOD_PLUS_MMX(*p,*p,col)
|
|
|
|
void
|
|
draw_line_mmx (Pixel * data, int x1, int y1, int x2, int y2, int col,
|
|
int screenx, int screeny)
|
|
{
|
|
int x, y, dx, dy, yy, xx;
|
|
Pixel *p;
|
|
|
|
if ((y1 < 0) || (y2 < 0) || (x1 < 0) || (x2 < 0) || (y1 >= screeny)
|
|
|| (y2 >= screeny) || (x1 >= screenx) || (x2 >= screenx))
|
|
goto end_of_line;
|
|
|
|
dx = x2 - x1;
|
|
dy = y2 - y1;
|
|
if (x1 >= x2) {
|
|
int tmp;
|
|
|
|
tmp = x1;
|
|
x1 = x2;
|
|
x2 = tmp;
|
|
tmp = y1;
|
|
y1 = y2;
|
|
y2 = tmp;
|
|
dx = x2 - x1;
|
|
dy = y2 - y1;
|
|
}
|
|
|
|
/* vertical line */
|
|
if (dx == 0) {
|
|
if (y1 < y2) {
|
|
p = &(data[(screenx * y1) + x1]);
|
|
for (y = y1; y <= y2; y++) {
|
|
DRAWMETHOD;
|
|
p += screenx;
|
|
}
|
|
} else {
|
|
p = &(data[(screenx * y2) + x1]);
|
|
for (y = y2; y <= y1; y++) {
|
|
DRAWMETHOD;
|
|
p += screenx;
|
|
}
|
|
}
|
|
goto end_of_line;
|
|
}
|
|
/* horizontal line */
|
|
if (dy == 0) {
|
|
if (x1 < x2) {
|
|
p = &(data[(screenx * y1) + x1]);
|
|
for (x = x1; x <= x2; x++) {
|
|
DRAWMETHOD;
|
|
p++;
|
|
}
|
|
goto end_of_line;
|
|
} else {
|
|
p = &(data[(screenx * y1) + x2]);
|
|
for (x = x2; x <= x1; x++) {
|
|
DRAWMETHOD;
|
|
p++;
|
|
}
|
|
goto end_of_line;
|
|
}
|
|
}
|
|
/* 1 */
|
|
/* \ */
|
|
/* \ */
|
|
/* 2 */
|
|
if (y2 > y1) {
|
|
/* steep */
|
|
if (dy > dx) {
|
|
dx = ((dx << 16) / dy);
|
|
x = x1 << 16;
|
|
for (y = y1; y <= y2; y++) {
|
|
xx = x >> 16;
|
|
p = &(data[(screenx * y) + xx]);
|
|
DRAWMETHOD;
|
|
if (xx < (screenx - 1)) {
|
|
p++;
|
|
/* DRAWMETHOD; */
|
|
}
|
|
x += dx;
|
|
}
|
|
goto end_of_line;
|
|
}
|
|
/* shallow */
|
|
else {
|
|
dy = ((dy << 16) / dx);
|
|
y = y1 << 16;
|
|
for (x = x1; x <= x2; x++) {
|
|
yy = y >> 16;
|
|
p = &(data[(screenx * yy) + x]);
|
|
DRAWMETHOD;
|
|
if (yy < (screeny - 1)) {
|
|
p += screeny;
|
|
/* DRAWMETHOD; */
|
|
}
|
|
y += dy;
|
|
}
|
|
}
|
|
}
|
|
/* 2 */
|
|
/* / */
|
|
/* / */
|
|
/* 1 */
|
|
else {
|
|
/* steep */
|
|
if (-dy > dx) {
|
|
dx = ((dx << 16) / -dy);
|
|
x = (x1 + 1) << 16;
|
|
for (y = y1; y >= y2; y--) {
|
|
xx = x >> 16;
|
|
p = &(data[(screenx * y) + xx]);
|
|
DRAWMETHOD;
|
|
if (xx < (screenx - 1)) {
|
|
p--;
|
|
/* DRAWMETHOD; */
|
|
}
|
|
x += dx;
|
|
}
|
|
goto end_of_line;
|
|
}
|
|
/* shallow */
|
|
else {
|
|
dy = ((dy << 16) / dx);
|
|
y = y1 << 16;
|
|
for (x = x1; x <= x2; x++) {
|
|
yy = y >> 16;
|
|
p = &(data[(screenx * yy) + x]);
|
|
DRAWMETHOD;
|
|
if (yy < (screeny - 1)) {
|
|
p += screeny;
|
|
/* DRAWMETHOD; */
|
|
}
|
|
y += dy;
|
|
}
|
|
goto end_of_line;
|
|
}
|
|
}
|
|
end_of_line:
|
|
emms ();
|
|
/* __asm__ __volatile__ ("emms"); */
|
|
}
|
|
#else
|
|
int
|
|
mmx_supported (void)
|
|
{
|
|
return (0);
|
|
}
|
|
#endif /* HAVE_MMX */
|