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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#include "mp_msg.h"
#include "cpudetect.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "libvo/fastmemcpy.h"
struct vf_priv_s {
int hi, lo;
float frac;
int max, last, cnt;
};
#ifdef HAVE_MMX
static int diff_MMX(unsigned char *old, unsigned char *new, int os, int ns)
{
volatile short out[4];
asm (
"movl $8, %%ecx \n\t"
"pxor %%mm4, %%mm4 \n\t"
"pxor %%mm7, %%mm7 \n\t"
ASMALIGN(4)
"1: \n\t"
"movq (%%"REG_S"), %%mm0 \n\t"
"movq (%%"REG_S"), %%mm2 \n\t"
"add %%"REG_a", %%"REG_S" \n\t"
"movq (%%"REG_D"), %%mm1 \n\t"
"add %%"REG_b", %%"REG_D" \n\t"
"psubusb %%mm1, %%mm2 \n\t"
"psubusb %%mm0, %%mm1 \n\t"
"movq %%mm2, %%mm0 \n\t"
"movq %%mm1, %%mm3 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t"
"punpcklbw %%mm7, %%mm1 \n\t"
"punpckhbw %%mm7, %%mm2 \n\t"
"punpckhbw %%mm7, %%mm3 \n\t"
"paddw %%mm0, %%mm4 \n\t"
"paddw %%mm1, %%mm4 \n\t"
"paddw %%mm2, %%mm4 \n\t"
"paddw %%mm3, %%mm4 \n\t"
"decl %%ecx \n\t"
"jnz 1b \n\t"
"movq %%mm4, (%%"REG_d") \n\t"
"emms \n\t"
:
: "S" (old), "D" (new), "a" ((long)os), "b" ((long)ns), "d" (out)
: "memory"
);
return out[0]+out[1]+out[2]+out[3];
}
#endif
static int diff_C(unsigned char *old, unsigned char *new, int os, int ns)
{
int x, y, d=0;
for (y = 8; y; y--) {
for (x = 8; x; x--) {
d += abs(new[x] - old[x]);
}
new += ns;
old += os;
}
return d;
}
static int (*diff)(unsigned char *, unsigned char *, int, int);
static int diff_to_drop_plane(int hi, int lo, float frac, unsigned char *old, unsigned char *new, int w, int h, int os, int ns)
{
int x, y;
int d, c=0;
int t = (w/16)*(h/16)*frac;
for (y = 0; y < h-7; y += 4) {
for (x = 8; x < w-7; x += 4) {
d = diff(old+x+y*os, new+x+y*ns, os, ns);
if (d > hi) return 0;
if (d > lo) {
c++;
if (c > t) return 0;
}
}
}
return 1;
}
static int diff_to_drop(int hi, int lo, float frac, mp_image_t *old, mp_image_t *new)
{
if (new->flags & MP_IMGFLAG_PLANAR) {
return diff_to_drop_plane(hi,lo,frac, old->planes[0], new->planes[0],
new->w, new->h, old->stride[0], new->stride[0])
&& diff_to_drop_plane(hi,lo,frac, old->planes[1], new->planes[1],
new->chroma_width, new->chroma_height,
old->stride[1], new->stride[1])
&& diff_to_drop_plane(hi,lo,frac, old->planes[2], new->planes[2],
new->chroma_width, new->chroma_height,
old->stride[2], new->stride[2]);
}
return diff_to_drop_plane(hi,lo,frac, old->planes[0], new->planes[0],
new->w*(new->bpp/8), new->h, old->stride[0], new->stride[0]);
}
static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts)
{
mp_image_t *dmpi;
dmpi = vf_get_image(vf->next, mpi->imgfmt,
MP_IMGTYPE_STATIC, MP_IMGFLAG_ACCEPT_STRIDE |
MP_IMGFLAG_PRESERVE | MP_IMGFLAG_READABLE,
mpi->width, mpi->height);
dmpi->qscale = mpi->qscale;
dmpi->qstride = mpi->qstride;
dmpi->qscale_type = mpi->qscale_type;
if (diff_to_drop(vf->priv->hi, vf->priv->lo, vf->priv->frac, dmpi, mpi)) {
if (vf->priv->max == 0)
return 0;
else if ((vf->priv->max > 0) && (vf->priv->cnt++ < vf->priv->max))
return 0;
else if ((vf->priv->max < 0) && (vf->priv->last+1 >= -vf->priv->max))
return vf->priv->last=0;
}
vf->priv->last++;
vf->priv->cnt=0;
memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h,
dmpi->stride[0], mpi->stride[0]);
if (mpi->flags & MP_IMGFLAG_PLANAR) {
memcpy_pic(dmpi->planes[1], mpi->planes[1],
mpi->chroma_width, mpi->chroma_height,
dmpi->stride[1], mpi->stride[1]);
memcpy_pic(dmpi->planes[2], mpi->planes[2],
mpi->chroma_width, mpi->chroma_height,
dmpi->stride[2], mpi->stride[2]);
}
return vf_next_put_image(vf, dmpi, pts);
}
static void uninit(struct vf_instance_s* vf)
{
free(vf->priv);
}
static int open(vf_instance_t *vf, char* args)
{
struct vf_priv_s *p;
vf->put_image = put_image;
vf->uninit = uninit;
vf->default_reqs = VFCAP_ACCEPT_STRIDE;
vf->priv = p = calloc(1, sizeof(struct vf_priv_s));
p->max = 0;
p->hi = 64*12;
p->lo = 64*5;
p->frac = 0.33;
if (args) sscanf(args, "%d:%d:%d:%f", &p->max, &p->hi, &p->lo, &p->frac);
diff = diff_C;
#ifdef HAVE_MMX
if(gCpuCaps.hasMMX) diff = diff_MMX;
#endif
return 1;
}
vf_info_t vf_info_decimate = {
"near-duplicate frame remover",
"decimate",
"Rich Felker",
"",
open,
NULL
};
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