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mpv/libmpcodecs/vf_divtc.c
rfelker 6b373e4077 New filter by Ville Saari (114263 at foo dot bar dot org)
for removing duplicate frames from telecined video that was
incorrectly deinterlaced. Minor bugfixes added by me.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@12226 b3059339-0415-0410-9bf9-f77b7e298cf2
2004-04-17 17:08:31 +00:00

699 lines
15 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <math.h>
#include "../config.h"
#include "../mp_msg.h"
#include "../cpudetect.h"
#include "../bswap.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "../libvo/fastmemcpy.h"
vf_info_t vf_info_divtc;
struct vf_priv_s
{
int deghost, pass, phase, window, fcount, bcount, frameno, misscount,
ocount, sum[5];
double threshold;
FILE *file;
char *bdata;
unsigned int *csdata;
int *history;
};
/*
* diff_MMX and diff_C stolen from vf_decimate.c
*/
#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"
".balign 16 \n\t"
"1: \n\t"
"movq (%%esi), %%mm0 \n\t"
"movq (%%esi), %%mm2 \n\t"
"addl %%eax, %%esi \n\t"
"movq (%%edi), %%mm1 \n\t"
"addl %%ebx, %%edi \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, (%%edx) \n\t"
"emms \n\t"
:
: "S" (old), "D" (new), "a" (os), "b" (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--, new+=ns, old+=os)
for(x=8; x; x--)
d+=abs(new[x]-old[x]);
return d;
}
static int (*diff)(unsigned char *, unsigned char *, int, int);
static int diff_plane(unsigned char *old, unsigned char *new,
int w, int h, int os, int ns, int arg)
{
int x, y, d, max=0, sum=0, n=0;
for(y=0; y<h-7; y+=8)
{
for(x=0; x<w-7; x+=8)
{
d=diff(old+x+y*os, new+x+y*ns, os, ns);
if(d>max) max=d;
sum+=d;
n++;
}
}
return (sum+n*max)/2;
}
/*
static unsigned int checksum_plane(unsigned char *p, unsigned char *z,
int w, int h, int s, int zs, int arg)
{
unsigned int shift, sum;
unsigned char *e;
for(sum=0; h; h--, p+=s-w)
for(e=p+w, shift=32; p<e;)
sum^=(*p++)<<(shift=(shift-8)&31);
return sum;
}
*/
static unsigned int checksum_plane(unsigned char *p, unsigned char *z,
int w, int h, int s, int zs, int arg)
{
unsigned int shift;
uint32_t sum, t;
unsigned char *e, *e2;
#if MP_WORDSIZE==64
typedef uint64_t wsum_t;
#else
typedef uint32_t wsum_t;
#endif
wsum_t wsum;
for(sum=0; h; h--, p+=s-w)
{
for(shift=0, e=p+w; (int)p&(sizeof(wsum_t)-1) && p<e;)
sum^=*p++<<(shift=(shift-8)&31);
for(wsum=0, e2=e-sizeof(wsum_t)+1; p<e2; p+=sizeof(wsum_t))
wsum^=*(wsum_t *)p;
#if MP_WORDSIZE==64
t=be2me_32((uint32_t)(wsum>>32^wsum));
#else
t=be2me_32(wsum);
#endif
for(sum^=(t<<shift|t>>(32-shift)); p<e;)
sum^=*p++<<(shift=(shift-8)&31);
}
return sum;
}
static int deghost_plane(unsigned char *d, unsigned char *s,
int w, int h, int ds, int ss, int threshold)
{
int t;
unsigned char *e;
for(; h; h--, s+=ss-w, d+=ds-w)
for(e=d+w; d<e; d++, s++)
if(abs(*d-*s)>=threshold)
*d=(t=(*d<<1)-*s)<0?0:t>255?255:t;
return 0;
}
static int imgop(int(*planeop)(unsigned char *, unsigned char *,
int, int, int, int, int),
mp_image_t *dst, mp_image_t *src, int arg)
{
if(dst->flags&MP_IMGFLAG_PLANAR)
return planeop(dst->planes[0], src?src->planes[0]:0,
dst->w, dst->h,
dst->stride[0], src?src->stride[0]:0, arg)+
planeop(dst->planes[1], src?src->planes[1]:0,
dst->chroma_width, dst->chroma_height,
dst->stride[1], src?src->stride[1]:0, arg)+
planeop(dst->planes[2], src?src->planes[2]:0,
dst->chroma_width, dst->chroma_height,
dst->stride[2], src?src->stride[2]:0, arg);
return planeop(dst->planes[0], src?src->planes[0]:0,
dst->w*(dst->bpp/8), dst->h,
dst->stride[0], src?src->stride[0]:0, arg);
}
/*
* Find the phase in which the telecine pattern fits best to the
* given 5 frame slice of frame difference measurements.
*
* If phase1 and phase2 are not negative, only the two specified
* phases are tested.
*/
static int cmp(int *a, int *b) { return *b-*a; }
static int match(struct vf_priv_s *p, int *diffs,
int phase1, int phase2, double *strength)
{
static const int pattern1[]={ -4, 1, 1, 1, 1 },
pattern2[]={ -2, -3, 4, 4, -3 }, *pattern;
int f, m, n, t[5];
pattern=p->deghost>0?pattern2:pattern1;
for(f=0; f<5; f++)
{
if(phase1<0 || phase2<0 || f==phase1 || f==phase2)
{
for(n=t[f]=0; n<5; n++)
t[f]+=diffs[n]*pattern[(n-f+5)%5];
}
else
t[f]=INT_MIN;
}
/* find the best match */
for(m=0, n=1; n<5; n++)
if(t[n]>t[m]) m=n;
if(strength)
{
/* the second best match */
for(f=m?0:1, n=f+1; n<5; n++)
if(n!=m && t[n]>t[f]) f=n;
*strength=(t[m]>0?(double)(t[m]-t[f])/t[m]:0.0);
}
return m;
}
static int put_image(struct vf_instance_s* vf, mp_image_t *mpi)
{
mp_image_t *dmpi, *tmpi=0;
int n, m, f, newphase;
struct vf_priv_s *p=vf->priv;
unsigned int checksum;
double d;
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);
vf_clone_mpi_attributes(dmpi, mpi);
newphase=p->phase;
switch(p->pass)
{
case 1:
fprintf(p->file, "%08x %d\n",
(unsigned int)imgop((void *)checksum_plane, mpi, 0, 0),
p->frameno?imgop(diff_plane, dmpi, mpi, 0):0);
break;
case 2:
if(p->frameno/5>p->bcount)
{
mp_msg(MSGT_VFILTER, MSGL_ERR,
"\n%s: Log file ends prematurely! "
"Switching to one pass mode.\n", vf->info->name);
p->pass=0;
break;
}
checksum=(unsigned int)imgop((void *)checksum_plane, mpi, 0, 0);
if(checksum!=p->csdata[p->frameno])
{
for(f=0; f<100; f++)
if(p->frameno+f<p->fcount && p->csdata[p->frameno+f]==checksum)
break;
else if(p->frameno-f>=0 && p->csdata[p->frameno-f]==checksum)
{
f=-f;
break;
}
if(f<100)
{
mp_msg(MSGT_VFILTER, MSGL_INFO,
"\n%s: Mismatch with pass-1: %+d frame(s).\n",
vf->info->name, f);
p->frameno+=f;
p->misscount=0;
}
else if(p->misscount++>=30)
{
mp_msg(MSGT_VFILTER, MSGL_ERR,
"\n%s: Sync with pass-1 lost! "
"Switching to one pass mode.\n", vf->info->name);
p->pass=0;
break;
}
}
n=(p->frameno)/5;
if(n>=p->bcount) n=p->bcount-1;
newphase=p->bdata[n];
break;
default:
if(p->frameno)
{
int *sump=p->sum+p->frameno%5,
*histp=p->history+p->frameno%p->window;
*sump-=*histp;
*sump+=(*histp=imgop(diff_plane, dmpi, mpi, 0));
}
m=match(p, p->sum, -1, -1, &d);
if(d>=p->threshold)
newphase=m;
}
n=p->ocount++%5;
if(newphase!=p->phase && ((p->phase+4)%5<n)==((newphase+4)%5<n))
{
p->phase=newphase;
mp_msg(MSGT_VFILTER, MSGL_STATUS,
"\n%s: Telecine phase %d.\n", vf->info->name, p->phase);
}
switch((p->frameno++-p->phase+10)%5)
{
case 0:
imgop((void *)memcpy_pic, dmpi, mpi, 0);
return 0;
case 4:
if(p->deghost>0)
{
tmpi=vf_get_image(vf->next, mpi->imgfmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
mpi->width, mpi->height);
vf_clone_mpi_attributes(tmpi, mpi);
imgop((void *)memcpy_pic, tmpi, mpi, 0);
imgop(deghost_plane, tmpi, dmpi, p->deghost);
imgop((void *)memcpy_pic, dmpi, mpi, 0);
return vf_next_put_image(vf, tmpi);
}
}
imgop((void *)memcpy_pic, dmpi, mpi, 0);
return vf_next_put_image(vf, dmpi);
}
static int analyze(struct vf_priv_s *p)
{
int *buf=0, *bp, bufsize=0, n, b, f, i, j, m, s;
unsigned int *cbuf=0, *cp;
char *pbuf;
char lbuf[256];
int sum[5];
double d;
/* read the file */
n=15;
while(fgets(lbuf, 256, p->file))
{
if(n>=bufsize-19)
{
bufsize=bufsize?bufsize*2:30000;
if((bp=realloc(buf, bufsize*sizeof *buf))) buf=bp;
if((cp=realloc(cbuf, bufsize*sizeof *cbuf))) cbuf=cp;
if(!bp || !cp)
{
mp_msg(MSGT_VFILTER, MSGL_FATAL, "%s: Not enough memory.\n",
vf_info_divtc.name);
free(buf);
free(cbuf);
return 0;
}
}
sscanf(lbuf, "%x %d", cbuf+n, buf+n);
n++;
}
if(!n)
{
mp_msg(MSGT_VFILTER, MSGL_FATAL, "%s: Empty 2-pass log file.\n",
vf_info_divtc.name);
free(buf);
free(cbuf);
return 0;
}
/* generate some dummy data past the beginning and end of the array */
buf+=15, cbuf+=15;
n-=15;
memcpy(buf-15, buf, 15*sizeof *buf);
memset(cbuf-15, 0, 15*sizeof *cbuf);
while(n%5)
buf[n]=buf[n-5], cbuf[n]=0, n++;
memcpy(buf+n, buf+n-15, 15*sizeof *buf);
memset(cbuf+n, 0, 15*sizeof *cbuf);
p->csdata=cbuf;
p->fcount=n;
/* array with one slot for each slice of 5 frames */
p->bdata=pbuf=malloc(p->bcount=b=(n/5));
memset(pbuf, 255, b);
/* resolve the automatic mode */
if(p->deghost<0)
{
int deghost=-p->deghost;
double s0=0.0, s1=0.0;
for(f=0; f<n; f+=5)
{
p->deghost=0; match(p, buf+f, -1, -1, &d); s0+=d;
p->deghost=1; match(p, buf+f, -1, -1, &d); s1+=d;
}
p->deghost=s1>s0?deghost:0;
mp_msg(MSGT_VFILTER, MSGL_INFO,
"%s: Deghosting %-3s (relative pattern strength %+.2fdB).\n",
vf_info_divtc.name,
p->deghost?"ON":"OFF",
10.0*log10(s1/s0));
}
/* analyze the data */
for(f=0; f<5; f++)
for(sum[f]=0, n=-15; n<20; n+=5)
sum[f]+=buf[n+f];
for(f=0; f<b; f++)
{
m=match(p, sum, -1, -1, &d);
if(d>=p->threshold)
pbuf[f]=m;
if(f<b-1)
for(n=0; n<5; n++)
sum[n]=sum[n]-buf[5*(f-3)+n]+buf[5*(f+4)+n];
}
/* fill in the gaps */
/* the beginning */
for(f=0; f<b && pbuf[f]==-1; f++);
if(f==b)
{
free(buf-15);
mp_msg(MSGT_VFILTER, MSGL_FATAL, "%s: No telecine pattern found!\n",
vf_info_divtc.name);
return 0;
}
for(n=0; n<f; pbuf[n++]=pbuf[f]);
/* the end */
for(f=b-1; pbuf[f]==-1; f--);
for(n=f+1; n<b; pbuf[n++]=pbuf[f]);
/* the rest */
for(f=0;;)
{
while(f<b && pbuf[f]!=-1) f++;
if(f==b) break;
for(n=f; pbuf[n]==-1; n++);
if(pbuf[f-1]==pbuf[n])
{
/* just a gap */
while(f<n) pbuf[f++]=pbuf[n];
}
else
{
/* phase change, reanalyze the original data in the gap with zero
threshold for only the two phases that appear at the ends */
for(i=0; i<5; i++)
for(sum[i]=0, j=5*f-15; j<5*f; j+=5)
sum[i]+=buf[i+j];
for(i=f; i<n; i++)
{
pbuf[i]=match(p, sum, pbuf[f-1], pbuf[n], 0);
for(j=0; j<5; j++)
sum[j]=sum[j]-buf[5*(i-3)+j]+buf[5*(i+4)+j];
}
/* estimate the transition point by dividing the gap
in the same proportion as the number of matches of each kind */
for(i=f, m=f; i<n; i++)
if(pbuf[i]==pbuf[f-1]) m++;
/* find the transition of the right direction nearest to the
estimated point */
if(m>f && m<n)
{
for(j=m; j>f; j--)
if(pbuf[j-1]==pbuf[f-1] && pbuf[j]==pbuf[n]) break;
for(s=m; s<n; s++)
if(pbuf[s-1]==pbuf[f-1] && pbuf[s]==pbuf[n]) break;
m=(s-m<m-j)?s:j;
}
/* and rewrite the data to allow only this one transition */
for(i=f; i<m; i++)
pbuf[i]=pbuf[f-1];
for(; i<n; i++)
pbuf[i]=pbuf[n];
f=n;
}
}
free(buf-15);
return 1;
}
static int query_format(struct vf_instance_s* vf, unsigned int fmt)
{
switch(fmt)
{
case IMGFMT_444P: case IMGFMT_IYUV: case IMGFMT_RGB24:
case IMGFMT_422P: case IMGFMT_UYVY: case IMGFMT_BGR24:
case IMGFMT_411P: case IMGFMT_YUY2: case IMGFMT_IF09:
case IMGFMT_YV12: case IMGFMT_I420: case IMGFMT_YVU9:
case IMGFMT_IUYV: case IMGFMT_Y800: case IMGFMT_Y8:
return vf_next_query_format(vf,fmt);
}
return 0;
}
static void uninit(struct vf_instance_s* vf)
{
if(vf->priv)
{
if(vf->priv->file) fclose(vf->priv->file);
if(vf->priv->csdata) free(vf->priv->csdata-15);
free(vf->priv->bdata);
free(vf->priv->history);
free(vf->priv);
}
}
static int open(vf_instance_t *vf, char* args)
{
struct vf_priv_s *p;
char *filename="framediff.log", *ap, *q, *a;
if(args && !(args=strdup(args)))
{
nomem:
mp_msg(MSGT_VFILTER, MSGL_FATAL,
"%s: Not enough memory.\n", vf->info->name);
fail:
uninit(vf);
free(args);
return 0;
}
vf->put_image=put_image;
vf->uninit=uninit;
vf->query_format=query_format;
vf->default_reqs=VFCAP_ACCEPT_STRIDE;
if(!(vf->priv=p=calloc(1, sizeof(struct vf_priv_s))))
goto nomem;
p->phase=5;
p->threshold=0.5;
p->window=30;
if((ap=args))
while(*ap)
{
q=ap;
if((ap=strchr(q, ':'))) *ap++=0; else ap=q+strlen(q);
if((a=strchr(q, '='))) *a++=0; else a=q+strlen(q);
switch(*q)
{
case 0: break;
case 'f': filename=a; break;
case 't': p->threshold=atof(a); break;
case 'w': p->window=5*(atoi(a)+4)/5; break;
case 'd': p->deghost=atoi(a); break;
case 'p':
if(q[1]=='h') p->phase=atoi(a);
else p->pass=atoi(a);
break;
case 'h':
mp_msg(MSGT_VFILTER, MSGL_INFO,
"\n%s options:\n\n"
"pass=1|2 - Use 2-pass mode.\n"
"file=filename - Set the 2-pass log file name "
"(default %s).\n"
"threshold=value - Set the pattern recognition "
"sensitivity (default %g).\n"
"deghost=value - Select deghosting threshold "
"(default %d).\n"
"window=numframes - Set the statistics window "
"for 1-pass mode (default %d).\n"
"phase=0|1|2|3|4 - Set the initial phase "
"for 1-pass mode (default %d).\n\n"
"The option names can be abbreviated to the shortest "
"unique prefix.\n\n",
vf->info->name, filename, p->threshold, p->deghost,
p->window, p->phase%5);
break;
default:
mp_msg(MSGT_VFILTER, MSGL_FATAL,
"%s: Unknown argument %s.\n", vf->info->name, q);
goto fail;
}
}
switch(p->pass)
{
case 1:
if(!(p->file=fopen(filename, "w")))
{
mp_msg(MSGT_VFILTER, MSGL_FATAL,
"%s: Can't create file %s.\n", vf->info->name, filename);
goto fail;
}
break;
case 2:
if(!(p->file=fopen(filename, "r")))
{
mp_msg(MSGT_VFILTER, MSGL_FATAL,
"%s: Can't open file %s.\n", vf->info->name, filename);
goto fail;
}
if(!analyze(p))
goto fail;
fclose(p->file);
p->file=0;
break;
}
if(p->window<5) p->window=5;
if(!(p->history=calloc(sizeof *p->history, p->window)))
goto nomem;
diff=
#ifdef HAVE_MMX
gCpuCaps.hasMMX?diff_MMX:
#endif
diff_C;
free(args);
return 1;
}
vf_info_t vf_info_divtc =
{
"inverse telecine for deinterlaced video",
"divtc",
"Ville Saari",
"",
open,
NULL
};