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MMX optimized code for soft equalizer filter

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@7066 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
rfelker 2002-08-22 04:59:45 +00:00
parent eb4c371b32
commit e4063b8ad2
1 changed files with 73 additions and 5 deletions
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78
libmpcodecs/vf_eq.c
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@ -5,6 +5,7 @@
#include "../config.h"
#include "../mp_msg.h"
#include "../cpudetect.h"
#include "img_format.h"
#include "mp_image.h"
@ -20,7 +21,66 @@ struct vf_priv_s {
int contrast;
};
static void process(unsigned char *dest, int dstride, unsigned char *src, int sstride,
#ifdef HAVE_MMX
static void process_MMX(unsigned char *dest, int dstride, unsigned char *src, int sstride,
int w, int h, int brightness, int contrast)
{
int i;
int pel;
int dstep = dstride-w;
int sstep = sstride-w;
short brvec[4];
short contvec[4];
short centvec[4] = { -128, -128, -128, -128 };
brightness = ((brightness+100)*511)/200-128;
contrast = ((contrast+100)*256)/200;
brvec[0] = brvec[1] = brvec[2] = brvec[3] = brightness;
contvec[0] = contvec[1] = contvec[2] = contvec[3] = contrast;
while (h--) {
asm (
"movq (%5), %%mm3 \n\t"
"movq (%6), %%mm4 \n\t"
"movq (%7), %%mm5 \n\t"
"pxor %%mm0, %%mm0 \n\t"
".align 16 \n\t"
"1: \n\t"
"movq (%0), %%mm1 \n\t"
"movq (%0), %%mm2 \n\t"
"punpcklbw %%mm0, %%mm1 \n\t"
"punpckhbw %%mm0, %%mm2 \n\t"
"paddw %%mm5, %%mm1 \n\t"
"paddw %%mm5, %%mm2 \n\t"
"pmullw %%mm4, %%mm1 \n\t"
"pmullw %%mm4, %%mm2 \n\t"
"psraw $7, %%mm1 \n\t"
"psraw $7, %%mm2 \n\t"
"paddsw %%mm3, %%mm1 \n\t"
"paddsw %%mm3, %%mm2 \n\t"
"packuswb %%mm2, %%mm1 \n\t"
"addl $8, %0 \n\t"
"movq %%mm1, (%1) \n\t"
"addl $8, %1 \n\t"
"decl %4 \n\t"
"jnz 1b \n\t"
: "=r" (src), "=r" (dest)
: "0" (src), "1" (dest), "r" (w/8), "r" (brvec), "r" (contvec), "r" (centvec)
);
for (i = w&7; i; i--)
{
pel = ((*src++ - 128) * contrast)/256 + brightness;
*dest++ = pel > 255 ? 255 : (pel < 0 ? 0 : pel);
}
src += sstep;
dest += dstep;
}
asm volatile ( "emms \n\t" ::: "memory" );
}
#endif
static void process_C(unsigned char *dest, int dstride, unsigned char *src, int sstride,
int w, int h, int brightness, int contrast)
{
int i;
@ -29,13 +89,12 @@ static void process(unsigned char *dest, int dstride, unsigned char *src, int ss
int sstep = sstride-w;
brightness = ((brightness+100)*511)/200-128;
contrast = ((contrast+100)*512)/200;
contrast = ((contrast+100)*256)/200;
while (h--) {
for (i = w; i; i--)
{
/* slow */
pel = ((*src++ - 128) * contrast)/256 + brightness;
pel = ((*src++ - 128) * contrast)/128 + brightness;
*dest++ = pel > 255 ? 255 : (pel < 0 ? 0 : pel);
}
src += sstep;
@ -43,7 +102,10 @@ static void process(unsigned char *dest, int dstride, unsigned char *src, int ss
}
}
/* FIXME: add packed yuv version of process, and optimized code! */
static void (*process)(unsigned char *dest, int dstride, unsigned char *src, int sstride,
int w, int h, int brightness, int contrast);
/* FIXME: add packed yuv version of process */
static void put_image(struct vf_instance_s* vf, mp_image_t *mpi)
{
@ -141,6 +203,12 @@ static int open(vf_instance_t *vf, char* args)
vf->priv = malloc(sizeof(struct vf_priv_s));
memset(vf->priv, 0, sizeof(struct vf_priv_s));
if (args) sscanf(args, "%d:%d", &vf->priv->brightness, &vf->priv->contrast);
process = process_C;
#ifdef HAVE_MMX
if(gCpuCaps.hasMMX) process = process_MMX;
#endif
return 1;
}