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vf_eq: remove slow inline asm

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Compiled with -O2, the C code runs just as far (or even slightly faster)
then the MMX inline asm.
This commit is contained in:
wm4 2014-04-19 15:38:04 +02:00
parent 0a444511e8
commit c4f5dc0d53
1 changed files with 0 additions and 75 deletions
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75
video/filter/vf_eq.c
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@ -31,7 +31,6 @@
#include "config.h"
#include "common/msg.h"
#include "common/cpudetect.h"
#include "options/m_option.h"
#include "video/img_format.h"
@ -126,75 +125,6 @@ void create_lut (eq2_param_t *par)
par->lut_clean = 1;
}
#if HAVE_MMX
static
void affine_1d_MMX (eq2_param_t *par, unsigned char *dst, unsigned char *src,
unsigned w, unsigned h, unsigned dstride, unsigned sstride)
{
unsigned i;
int contrast, brightness;
unsigned dstep, sstep;
int pel;
short brvec[4];
short contvec[4];
unsigned wcount = w >> 3;
// printf("\nmmx: src=%p dst=%p w=%d h=%d ds=%d ss=%d\n",src,dst,w,h,dstride,sstride);
contrast = (int) (par->c * 256 * 16);
brightness = ((int) (100.0 * par->b + 100.0) * 511) / 200 - 128 - contrast / 32;
brvec[0] = brvec[1] = brvec[2] = brvec[3] = brightness;
contvec[0] = contvec[1] = contvec[2] = contvec[3] = contrast;
sstep = sstride - w;
dstep = dstride - w;
while (h-- > 0) {
__asm__ volatile (
"movq (%5), %%mm3 \n\t"
"movq (%6), %%mm4 \n\t"
"pxor %%mm0, %%mm0 \n\t"
"movl %4, %%eax\n\t"
".align 4\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"
"psllw $4, %%mm1 \n\t"
"psllw $4, %%mm2 \n\t"
"pmulhw %%mm4, %%mm1 \n\t"
"pmulhw %%mm4, %%mm2 \n\t"
"paddw %%mm3, %%mm1 \n\t"
"paddw %%mm3, %%mm2 \n\t"
"packuswb %%mm2, %%mm1 \n\t"
"add $8, %0 \n\t"
"movq %%mm1, (%1) \n\t"
"add $8, %1 \n\t"
"decl %%eax \n\t"
"jnz 1b \n\t"
: "=r" (src), "=r" (dst)
: "0" (src), "1" (dst), "g" (wcount), "r" (brvec), "r" (contvec)
: "%eax"
);
for (i = w & 7; i > 0; i--) {
pel = ((*src++ * contrast) >> 12) + brightness;
if (pel & 768) {
pel = (-pel) >> 31;
}
*dst++ = pel;
}
src += sstep;
dst += dstep;
}
__asm__ volatile ( "emms \n\t" ::: "memory" );
}
#endif
static
void apply_lut (eq2_param_t *par, unsigned char *dst, unsigned char *src,
unsigned w, unsigned h, unsigned dstride, unsigned sstride)
@ -301,11 +231,6 @@ void check_values (eq2_param_t *par)
if ((par->c == 1.0) && (par->b == 0.0) && (par->g == 1.0)) {
par->adjust = NULL;
}
#if HAVE_MMX
else if (par->g == 1.0 && gCpuCaps.hasMMX) {
par->adjust = &affine_1d_MMX;
}
#endif
else {
par->adjust = &apply_lut;
}