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optimization

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@11167 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
michael 2003-10-17 17:15:38 +00:00
parent 2a256e2f16
commit 7b3ef293ee
1 changed files with 41 additions and 3 deletions
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44
libmpcodecs/vf_eq2.c
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@ -6,12 +6,14 @@
* Hampa Hug <hampa@hampa.ch> (original LUT gamma/contrast/brightness filter)
* Daniel Moreno <comac@comac.darktech.org> (saturation, R/G/B gamma support)
* Richard Felker (original MMX contrast/brightness code (vf_eq.c))
* Michael Niedermayer <michalni@gmx.at> (LUT16)
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <inttypes.h>
#include "config.h"
#include "mp_msg.h"
@ -25,10 +27,14 @@
#include <locale.h>
#endif
#define LUT16
/* Per channel parameters */
typedef struct eq2_param_t {
unsigned char lut[256];
#ifdef LUT16
uint16_t lut16[256*256];
#endif
int lut_clean;
void (*adjust) (struct eq2_param_t *par, unsigned char *dst, unsigned char *src,
@ -90,6 +96,12 @@ void create_lut (eq2_param_t *par)
}
}
#ifdef LUT16
for(i=0; i<256*256; i++){
par->lut16[i]= par->lut[i&0xFF] + (par->lut[i>>8]<<8);
}
#endif
par->lut_clean = 1;
}
@ -165,17 +177,43 @@ static
void apply_lut (eq2_param_t *par, unsigned char *dst, unsigned char *src,
unsigned w, unsigned h, unsigned dstride, unsigned sstride)
{
unsigned i, j;
unsigned i, j, w2;
unsigned char *lut;
uint16_t *lut16;
if (!par->lut_clean) {
create_lut (par);
}
lut = par->lut;
#ifdef LUT16
lut16 = par->lut16;
w2= (w>>3)<<2;
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++) {
uint16_t *src16= (uint16_t*)src;
uint16_t *dst16= (uint16_t*)dst;
for (i = 0; i < w2; i+=4) {
dst16[i+0] = lut16[src16[i+0]];
dst16[i+1] = lut16[src16[i+1]];
dst16[i+2] = lut16[src16[i+2]];
dst16[i+3] = lut16[src16[i+3]];
}
i <<= 1;
#else
w2= (w>>3)<<3;
for (j = 0; j < h; j++) {
for (i = 0; i < w2; i+=8) {
dst[i+0] = lut[src[i+0]];
dst[i+1] = lut[src[i+1]];
dst[i+2] = lut[src[i+2]];
dst[i+3] = lut[src[i+3]];
dst[i+4] = lut[src[i+4]];
dst[i+5] = lut[src[i+5]];
dst[i+6] = lut[src[i+6]];
dst[i+7] = lut[src[i+7]];
}
#endif
for (; i < w; i++) {
dst[i] = lut[src[i]];
}