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/***********************************************************
* YUVDENOISER for the mjpegtools *
* ------------------------------------------------------- *
* (C) 2001,2002 Stefan Fendt *
* *
* Licensed and protected by the GNU-General-Public- *
* License version 2 or if you prefer any later version of *
* that license). See the file LICENSE for detailed infor- *
* mation. *
***********************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "mjpeg_types.h"
#include "global.h"
#include "deinterlace.h"
/* global denoiser structure defined in main.c and global.h */
extern struct DNSR_GLOBAL denoiser;
/* pointer on deinterlace functions */
void (*deinterlace) (void);
void
deinterlace_noaccel(void)
{
unsigned int d=0;
unsigned int min;
register int x;
register int y;
register int xx;
register int i;
int xpos;
int l1;
int l2;
int lumadiff = 0;
uint8_t line_buf[8192];
uint8_t *line = line_buf;
/* Go through the frame by every two lines */
for (y = 32; y < (H+32) ; y += 2)
{
/* Go through each line by a "block" length of 32 pixels */
for (x = 0; x < W ; x += 8)
{
/* search best matching block of pixels in other field line */
min = 65535;
xpos = 0;
/* search in the range of +/- 8 pixels offset in the line */
for (xx = -8; xx < 8; xx++)
{
d = 0;
/* Calculate SAD */
for (i = -8; i < 16; i++)
{
/* to avoid blocking in ramps we analyse the best match on */
/* two lines ... */
d += (int) abs (*(denoiser.frame.ref[0] + (x + i) + y * W) -
*(denoiser.frame.ref[0] + (x + xx + i) + (y + 1) * W));
d += (int) abs (*(denoiser.frame.ref[0] + (x + i) + (y + 2) * W) -
*(denoiser.frame.ref[0] + (x + xx + i) + (y + 1) * W));
}
/* if SAD reaches a minimum store the position */
if (min > d)
{
min = d;
xpos = xx;
l1 = l2 = 0;
for (i = 0; i < 8; i++)
{
l1 += *(denoiser.frame.ref[0] + (x + i) + y * W);
l2 += *(denoiser.frame.ref[0] + (x + i + xpos) + (y + 1) * W);
}
l1 /= 8;
l2 /= 8;
lumadiff = abs (l1 - l2);
lumadiff = (lumadiff < 8) ? 0 : 1;
}
}
/* copy pixel-block into the line-buffer */
/* if lumadiff is small take the fields block, if not */
/* take the other fields block */
if (lumadiff || min > (12 * 24))
for (i = 0; i < 8; i++) /* average pixels :( */
{
*(line + x + i) =
(*(denoiser.frame.ref[0] + (x + i) + ((y) * W)) >>1) +
(*(denoiser.frame.ref[0] + (x + i) + ((y + 2) * W))>>1) + 1;
}
else
for (i = 0; i < 8; i++) /* move block :) */
{
*(line + x + i) =
(*(denoiser.frame.ref[0] + (x + i + xpos) + ((y + 1) * W)) >>1) +
(*(denoiser.frame.ref[0] + (x + i) + ((y + 0) * W)) >> 1) + 1;
}
}
/* copy the line-buffer into the source-line */
for (i = 0; i < W; i++)
*(denoiser.frame.ref[0] + i + (y + 1) * W) = *(line + i);
}
}
void
deinterlace_mmx(void)
{
uint32_t d=0;
#ifdef ARCH_X86
#ifdef HAVE_ASM_MMX
uint16_t a[4]={0,0,0,0};
#endif
#endif
unsigned int min;
register int x;
register int y;
int xx;
int i;
int xpos;
int l1;
int l2;
int lumadiff = 0;
uint8_t line_buf[8192];
uint8_t *line = line_buf;
uint8_t *ref1;
uint8_t *ref2;
uint8_t *ref3;
/* Go through the frame by every two lines */
for (y = 32; y < (H+32) ; y += 2)
{
/* Go through each line by a "block" length of 32 pixels */
for (x = 0; x < W ; x += 8)
{
/* search best matching block of pixels in other field line */
min = 65535;
xpos = 0;
/* search in the range of +/- 8 pixels offset in the line */
for (xx = 0; xx < 8; xx++)
{
ref1=denoiser.frame.ref[0]+x+y*W; /* not displaced */
ref2=denoiser.frame.ref[0]+x+y*W+W*2; /* not displaced two lines below */
ref3=denoiser.frame.ref[0]+x+y*W+W+xx; /* displaced one line below */
#ifdef ARCH_X86
#ifdef HAVE_ASM_MMX
__asm__ __volatile__
(
" pxor %%mm0 , %%mm0; /* clear mm0 */\n"
" pxor %%mm7 , %%mm7; /* clear mm7 */\n"
" /* */\n"
" .rept 3 /* repeat 3 times */\n"
" movq (%%esi), %%mm1; /* 8 Pixels from line */\n"
" movq (%%edi), %%mm2; /* 8 Pixels from displaced */\n"
" movq %%mm2 , %%mm3; /* hold a copy of mm2 in mm3 */\n"
" psubusb %%mm1 , %%mm3; /* positive differences between mm2 and mm1 */\n"
" psubusb %%mm2 , %%mm1; /* positive differences between mm1 and mm3 */\n"
" paddusb %%mm3 , %%mm1; /* mm1 now contains abs(mm1-mm2) */\n"
" movq %%mm1 , %%mm2; /* copy mm1 to mm2 */\n"
" punpcklbw %%mm7 , %%mm1; /* unpack mm1 into mm1 and mm2 */\n"
" punpckhbw %%mm7 , %%mm2; /* */\n"
" paddusw %%mm1 , %%mm0; /* add mm1 (stored in mm1 and mm2...) */\n"
" paddusw %%mm2 , %%mm0; /* to mm0 */\n"
" /* */\n"
" movq (%%eax), %%mm1; /* 8 Pixels from line */\n"
" movq (%%edi), %%mm2; /* 8 Pixels from displaced line */\n"
" movq %%mm2 , %%mm3; /* hold a copy of mm2 in mm3 */\n"
" psubusb %%mm1 , %%mm3; /* positive differences between mm2 and mm1 */\n"
" psubusb %%mm2 , %%mm1; /* positive differences between mm1 and mm3 */\n"
" paddusb %%mm3 , %%mm1; /* mm1 now contains abs(mm1-mm2) */\n"
" movq %%mm1 , %%mm2; /* copy mm1 to mm2 */\n"
" punpcklbw %%mm7 , %%mm1; /* unpack mm1 into mm1 and mm2 */\n"
" punpckhbw %%mm7 , %%mm2; /* */\n"
" paddusw %%mm1 , %%mm0; /* add mm1 (stored in mm1 and mm2...) */\n"
" paddusw %%mm2 , %%mm0; /* to mm0 */\n"
" addl $8 , %%esi; /* add 8 to frameaddress */\n"
" addl $8 , %%eax; /* add 8 to frameaddress */\n"
" addl $8 , %%edi; /* add 8 to frameaddress */\n"
" .endr /* end loop */\n"
" /* */\n"
" movq %%mm0 , %0 ; /* make mm0 available to gcc ... */\n"
:"=m" (a)
:"S" (ref1), "a" (ref2), "D" (ref3)
);
d=a[0]+a[1]+a[2]+a[3];
#endif
#endif
/* if SAD reaches a minimum store the position */
if (min > d)
{
min = d;
xpos = xx;
l1 = l2 = 0;
for (i = 0; i < 8; i++)
{
l1 += *(denoiser.frame.ref[0] + (x + i) + y * W);
l2 += *(denoiser.frame.ref[0] + (x + i + xpos) + (y + 1) * W);
}
l1 /= 8;
l2 /= 8;
lumadiff = abs (l1 - l2);
lumadiff = (lumadiff < 8) ? 0 : 1;
}
}
/* copy pixel-block into the line-buffer */
/* if lumadiff is small take the fields block, if not */
/* take the other fields block */
if (lumadiff || min > (12 * 24))
for (i = 0; i < 8; i++) /* average pixels :( */
{
*(line + x + i) =
(*(denoiser.frame.ref[0] + (x + i) + ((y) * W)) >>1) +
(*(denoiser.frame.ref[0] + (x + i) + ((y + 2) * W))>>1) + 1;
}
else
for (i = 0; i < 8; i++) /* move block :) */
{
*(line + x + i) =
(*(denoiser.frame.ref[0] + (x + i + xpos) + ((y + 1) * W)) >>1) +
(*(denoiser.frame.ref[0] + (x + i) + ((y + 0) * W)) >> 1) + 1;
}
}
/* copy the line-buffer into the source-line */
for (i = 0; i < W; i++)
*(denoiser.frame.ref[0] + i + (y + 1) * W) = *(line + i);
}
}
void
deinterlace_mmxe(void)
{
}
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