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libavfilter/libmpcodecs/vf_divtc.c

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00001 /*
00002  * This file is part of MPlayer.
00003  *
00004  * MPlayer is free software; you can redistribute it and/or modify
00005  * it under the terms of the GNU General Public License as published by
00006  * the Free Software Foundation; either version 2 of the License, or
00007  * (at your option) any later version.
00008  *
00009  * MPlayer is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  * GNU General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License along
00015  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
00016  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
00017  */
00018 
00019 #include <stdio.h>
00020 #include <stdlib.h>
00021 #include <string.h>
00022 #include <limits.h>
00023 #include <math.h>
00024 
00025 #include "config.h"
00026 #include "mp_msg.h"
00027 #include "cpudetect.h"
00028 #include "libavutil/common.h"
00029 #include "mpbswap.h"
00030 
00031 #include "img_format.h"
00032 #include "mp_image.h"
00033 #include "vf.h"
00034 
00035 #include "libvo/fastmemcpy.h"
00036 
00037 const vf_info_t vf_info_divtc;
00038 
00039 struct vf_priv_s
00040    {
00041    int deghost, pass, phase, window, fcount, bcount, frameno, misscount,
00042       ocount, sum[5];
00043    double threshold;
00044    FILE *file;
00045    int8_t *bdata;
00046    unsigned int *csdata;
00047    int *history;
00048    };
00049 
00050 /*
00051  * diff_MMX and diff_C stolen from vf_decimate.c
00052  */
00053 
00054 #if HAVE_MMX && HAVE_EBX_AVAILABLE
00055 static int diff_MMX(unsigned char *old, unsigned char *new, int os, int ns)
00056    {
00057    volatile short out[4];
00058    __asm__ (
00059         "movl $8, %%ecx \n\t"
00060         "pxor %%mm4, %%mm4 \n\t"
00061         "pxor %%mm7, %%mm7 \n\t"
00062 
00063         ASMALIGN(4)
00064         "1: \n\t"
00065 
00066         "movq (%%"REG_S"), %%mm0 \n\t"
00067         "movq (%%"REG_S"), %%mm2 \n\t"
00068         "add %%"REG_a", %%"REG_S" \n\t"
00069         "movq (%%"REG_D"), %%mm1 \n\t"
00070         "add %%"REG_b", %%"REG_D" \n\t"
00071         "psubusb %%mm1, %%mm2 \n\t"
00072         "psubusb %%mm0, %%mm1 \n\t"
00073         "movq %%mm2, %%mm0 \n\t"
00074         "movq %%mm1, %%mm3 \n\t"
00075         "punpcklbw %%mm7, %%mm0 \n\t"
00076         "punpcklbw %%mm7, %%mm1 \n\t"
00077         "punpckhbw %%mm7, %%mm2 \n\t"
00078         "punpckhbw %%mm7, %%mm3 \n\t"
00079         "paddw %%mm0, %%mm4 \n\t"
00080         "paddw %%mm1, %%mm4 \n\t"
00081         "paddw %%mm2, %%mm4 \n\t"
00082         "paddw %%mm3, %%mm4 \n\t"
00083 
00084         "decl %%ecx \n\t"
00085         "jnz 1b \n\t"
00086         "movq %%mm4, (%%"REG_d") \n\t"
00087         "emms \n\t"
00088         :
00089         : "S" (old), "D" (new), "a" ((long)os), "b" ((long)ns), "d" (out)
00090         : "%ecx", "memory"
00091         );
00092    return out[0]+out[1]+out[2]+out[3];
00093    }
00094 #endif
00095 
00096 static int diff_C(unsigned char *old, unsigned char *new, int os, int ns)
00097    {
00098    int x, y, d=0;
00099 
00100    for(y=8; y; y--, new+=ns, old+=os)
00101       for(x=8; x; x--)
00102          d+=abs(new[x]-old[x]);
00103 
00104    return d;
00105    }
00106 
00107 static int (*diff)(unsigned char *, unsigned char *, int, int);
00108 
00109 static int diff_plane(unsigned char *old, unsigned char *new,
00110                       int w, int h, int os, int ns, int arg)
00111    {
00112    int x, y, d, max=0, sum=0, n=0;
00113 
00114    for(y=0; y<h-7; y+=8)
00115       {
00116       for(x=0; x<w-7; x+=8)
00117          {
00118          d=diff(old+x+y*os, new+x+y*ns, os, ns);
00119          if(d>max) max=d;
00120          sum+=d;
00121          n++;
00122          }
00123       }
00124 
00125    return (sum+n*max)/2;
00126    }
00127 
00128 /*
00129 static unsigned int checksum_plane(unsigned char *p, unsigned char *z,
00130                                    int w, int h, int s, int zs, int arg)
00131    {
00132    unsigned int shift, sum;
00133    unsigned char *e;
00134 
00135    for(sum=0; h; h--, p+=s-w)
00136       for(e=p+w, shift=32; p<e;)
00137          sum^=(*p++)<<(shift=(shift-8)&31);
00138 
00139    return sum;
00140    }
00141 */
00142 
00143 static unsigned int checksum_plane(unsigned char *p, unsigned char *z,
00144                                    int w, int h, int s, int zs, int arg)
00145    {
00146    unsigned int shift;
00147    uint32_t sum, t;
00148    unsigned char *e, *e2;
00149 #if HAVE_FAST_64BIT
00150    typedef uint64_t wsum_t;
00151 #else
00152    typedef uint32_t wsum_t;
00153 #endif
00154    wsum_t wsum;
00155 
00156    for(sum=0; h; h--, p+=s-w)
00157       {
00158       for(shift=0, e=p+w; (int)p&(sizeof(wsum_t)-1) && p<e;)
00159          sum^=*p++<<(shift=(shift-8)&31);
00160 
00161       for(wsum=0, e2=e-sizeof(wsum_t)+1; p<e2; p+=sizeof(wsum_t))
00162          wsum^=*(wsum_t *)p;
00163 
00164 #if HAVE_FAST_64BIT
00165       t=be2me_32((uint32_t)(wsum>>32^wsum));
00166 #else
00167       t=be2me_32(wsum);
00168 #endif
00169 
00170       for(sum^=(t<<shift|t>>(32-shift)); p<e;)
00171          sum^=*p++<<(shift=(shift-8)&31);
00172       }
00173 
00174    return sum;
00175    }
00176 
00177 static int deghost_plane(unsigned char *d, unsigned char *s,
00178                          int w, int h, int ds, int ss, int threshold)
00179    {
00180    int t;
00181    unsigned char *e;
00182 
00183    for(; h; h--, s+=ss-w, d+=ds-w)
00184       for(e=d+w; d<e; d++, s++)
00185          if(abs(*d-*s)>=threshold)
00186             *d=(t=(*d<<1)-*s)<0?0:t>255?255:t;
00187 
00188    return 0;
00189    }
00190 
00191 static int copyop(unsigned char *d, unsigned char *s, int bpl, int h, int dstride, int sstride, int dummy) {
00192   memcpy_pic(d, s, bpl, h, dstride, sstride);
00193   return 0;
00194 }
00195 
00196 static int imgop(int(*planeop)(unsigned char *, unsigned char *,
00197                                int, int, int, int, int),
00198                  mp_image_t *dst, mp_image_t *src, int arg)
00199    {
00200    if(dst->flags&MP_IMGFLAG_PLANAR)
00201       return planeop(dst->planes[0], src?src->planes[0]:0,
00202                      dst->w, dst->h,
00203                      dst->stride[0], src?src->stride[0]:0, arg)+
00204              planeop(dst->planes[1], src?src->planes[1]:0,
00205                      dst->chroma_width, dst->chroma_height,
00206                      dst->stride[1], src?src->stride[1]:0, arg)+
00207              planeop(dst->planes[2], src?src->planes[2]:0,
00208                      dst->chroma_width, dst->chroma_height,
00209                      dst->stride[2], src?src->stride[2]:0, arg);
00210 
00211    return planeop(dst->planes[0], src?src->planes[0]:0,
00212                   dst->w*(dst->bpp/8), dst->h,
00213                   dst->stride[0], src?src->stride[0]:0, arg);
00214    }
00215 
00216 /*
00217  * Find the phase in which the telecine pattern fits best to the
00218  * given 5 frame slice of frame difference measurements.
00219  *
00220  * If phase1 and phase2 are not negative, only the two specified
00221  * phases are tested.
00222  */
00223 
00224 static int match(struct vf_priv_s *p, int *diffs,
00225                  int phase1, int phase2, double *strength)
00226    {
00227    static const int pattern1[]={ -4,  1, 1, 1, 1 },
00228       pattern2[]={ -2, -3, 4, 4, -3 }, *pattern;
00229    int f, m, n, t[5];
00230 
00231    pattern=p->deghost>0?pattern2:pattern1;
00232 
00233    for(f=0; f<5; f++)
00234       {
00235       if(phase1<0 || phase2<0 || f==phase1 || f==phase2)
00236          {
00237          for(n=t[f]=0; n<5; n++)
00238             t[f]+=diffs[n]*pattern[(n-f+5)%5];
00239          }
00240       else
00241          t[f]=INT_MIN;
00242       }
00243 
00244    /* find the best match */
00245    for(m=0, n=1; n<5; n++)
00246       if(t[n]>t[m]) m=n;
00247 
00248    if(strength)
00249       {
00250       /* the second best match */
00251       for(f=m?0:1, n=f+1; n<5; n++)
00252          if(n!=m && t[n]>t[f]) f=n;
00253 
00254       *strength=(t[m]>0?(double)(t[m]-t[f])/t[m]:0.0);
00255       }
00256 
00257    return m;
00258    }
00259 
00260 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts)
00261    {
00262    mp_image_t *dmpi, *tmpi=0;
00263    int n, m, f, newphase;
00264    struct vf_priv_s *p=vf->priv;
00265    unsigned int checksum;
00266    double d;
00267 
00268    dmpi=vf_get_image(vf->next, mpi->imgfmt,
00269                      MP_IMGTYPE_STATIC, MP_IMGFLAG_ACCEPT_STRIDE |
00270                      MP_IMGFLAG_PRESERVE | MP_IMGFLAG_READABLE,
00271                      mpi->width, mpi->height);
00272    vf_clone_mpi_attributes(dmpi, mpi);
00273 
00274    newphase=p->phase;
00275 
00276    switch(p->pass)
00277       {
00278       case 1:
00279          fprintf(p->file, "%08x %d\n",
00280                  (unsigned int)imgop((void *)checksum_plane, mpi, 0, 0),
00281                  p->frameno?imgop(diff_plane, dmpi, mpi, 0):0);
00282          break;
00283 
00284       case 2:
00285          if(p->frameno/5>p->bcount)
00286             {
00287             mp_msg(MSGT_VFILTER, MSGL_ERR,
00288                    "\n%s: Log file ends prematurely! "
00289                    "Switching to one pass mode.\n", vf->info->name);
00290             p->pass=0;
00291             break;
00292             }
00293 
00294          checksum=(unsigned int)imgop((void *)checksum_plane, mpi, 0, 0);
00295 
00296          if(checksum!=p->csdata[p->frameno])
00297             {
00298             for(f=0; f<100; f++)
00299                if(p->frameno+f<p->fcount && p->csdata[p->frameno+f]==checksum)
00300                   break;
00301                else if(p->frameno-f>=0 && p->csdata[p->frameno-f]==checksum)
00302                   {
00303                   f=-f;
00304                   break;
00305                   }
00306 
00307             if(f<100)
00308                {
00309                mp_msg(MSGT_VFILTER, MSGL_INFO,
00310                       "\n%s: Mismatch with pass-1: %+d frame(s).\n",
00311                       vf->info->name, f);
00312 
00313                p->frameno+=f;
00314                p->misscount=0;
00315                }
00316             else if(p->misscount++>=30)
00317                {
00318                mp_msg(MSGT_VFILTER, MSGL_ERR,
00319                       "\n%s: Sync with pass-1 lost! "
00320                       "Switching to one pass mode.\n", vf->info->name);
00321                p->pass=0;
00322                break;
00323                }
00324             }
00325 
00326          n=(p->frameno)/5;
00327          if(n>=p->bcount) n=p->bcount-1;
00328 
00329          newphase=p->bdata[n];
00330          break;
00331 
00332       default:
00333          if(p->frameno)
00334             {
00335             int *sump=p->sum+p->frameno%5,
00336                *histp=p->history+p->frameno%p->window;
00337 
00338             *sump-=*histp;
00339             *sump+=(*histp=imgop(diff_plane, dmpi, mpi, 0));
00340             }
00341 
00342          m=match(p, p->sum, -1, -1, &d);
00343 
00344          if(d>=p->threshold)
00345             newphase=m;
00346       }
00347 
00348    n=p->ocount++%5;
00349 
00350    if(newphase!=p->phase && ((p->phase+4)%5<n)==((newphase+4)%5<n))
00351       {
00352       p->phase=newphase;
00353       mp_msg(MSGT_VFILTER, MSGL_STATUS,
00354              "\n%s: Telecine phase %d.\n", vf->info->name, p->phase);
00355       }
00356 
00357    switch((p->frameno++-p->phase+10)%5)
00358       {
00359       case 0:
00360          imgop(copyop, dmpi, mpi, 0);
00361          return 0;
00362 
00363       case 4:
00364          if(p->deghost>0)
00365             {
00366             tmpi=vf_get_image(vf->next, mpi->imgfmt,
00367                               MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE |
00368                               MP_IMGFLAG_READABLE,
00369                               mpi->width, mpi->height);
00370             vf_clone_mpi_attributes(tmpi, mpi);
00371 
00372             imgop(copyop, tmpi, mpi, 0);
00373             imgop(deghost_plane, tmpi, dmpi, p->deghost);
00374             imgop(copyop, dmpi, mpi, 0);
00375             return vf_next_put_image(vf, tmpi, MP_NOPTS_VALUE);
00376             }
00377       }
00378 
00379    imgop(copyop, dmpi, mpi, 0);
00380    return vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
00381    }
00382 
00383 static int analyze(struct vf_priv_s *p)
00384    {
00385    int *buf=0, *bp, bufsize=0, n, b, f, i, j, m, s;
00386    unsigned int *cbuf=0, *cp;
00387    int8_t *pbuf;
00388    int8_t lbuf[256];
00389    int sum[5];
00390    double d;
00391 
00392    /* read the file */
00393 
00394    n=15;
00395    while(fgets(lbuf, 256, p->file))
00396       {
00397       if(n>=bufsize-19)
00398          {
00399          bufsize=bufsize?bufsize*2:30000;
00400          if((bp=realloc(buf, bufsize*sizeof *buf))) buf=bp;
00401          if((cp=realloc(cbuf, bufsize*sizeof *cbuf))) cbuf=cp;
00402 
00403          if(!bp || !cp)
00404             {
00405             mp_msg(MSGT_VFILTER, MSGL_FATAL, "%s: Not enough memory.\n",
00406                    vf_info_divtc.name);
00407             free(buf);
00408             free(cbuf);
00409             return 0;
00410             }
00411          }
00412       sscanf(lbuf, "%x %d", cbuf+n, buf+n);
00413       n++;
00414       }
00415 
00416    if(!n)
00417       {
00418       mp_msg(MSGT_VFILTER, MSGL_FATAL, "%s: Empty 2-pass log file.\n",
00419              vf_info_divtc.name);
00420       free(buf);
00421       free(cbuf);
00422       return 0;
00423       }
00424 
00425    /* generate some dummy data past the beginning and end of the array */
00426 
00427    buf+=15, cbuf+=15;
00428    n-=15;
00429 
00430    memcpy(buf-15, buf, 15*sizeof *buf);
00431    memset(cbuf-15, 0, 15*sizeof *cbuf);
00432 
00433    while(n%5)
00434       buf[n]=buf[n-5], cbuf[n]=0, n++;
00435 
00436    memcpy(buf+n, buf+n-15, 15*sizeof *buf);
00437    memset(cbuf+n, 0, 15*sizeof *cbuf);
00438 
00439    p->csdata=cbuf;
00440    p->fcount=n;
00441 
00442    /* array with one slot for each slice of 5 frames */
00443 
00444    p->bdata=pbuf=malloc(p->bcount=b=(n/5));
00445    memset(pbuf, 255, b);
00446 
00447    /* resolve the automatic mode */
00448 
00449    if(p->deghost<0)
00450       {
00451       int deghost=-p->deghost;
00452       double s0=0.0, s1=0.0;
00453 
00454       for(f=0; f<n; f+=5)
00455          {
00456          p->deghost=0; match(p, buf+f, -1, -1, &d); s0+=d;
00457          p->deghost=1; match(p, buf+f, -1, -1, &d); s1+=d;
00458          }
00459 
00460       p->deghost=s1>s0?deghost:0;
00461 
00462       mp_msg(MSGT_VFILTER, MSGL_INFO,
00463              "%s: Deghosting %-3s (relative pattern strength %+.2fdB).\n",
00464              vf_info_divtc.name,
00465              p->deghost?"ON":"OFF",
00466              10.0*log10(s1/s0));
00467       }
00468 
00469    /* analyze the data */
00470 
00471    for(f=0; f<5; f++)
00472       for(sum[f]=0, n=-15; n<20; n+=5)
00473          sum[f]+=buf[n+f];
00474 
00475    for(f=0; f<b; f++)
00476       {
00477       m=match(p, sum, -1, -1, &d);
00478 
00479       if(d>=p->threshold)
00480          pbuf[f]=m;
00481 
00482       if(f<b-1)
00483          for(n=0; n<5; n++)
00484             sum[n]=sum[n]-buf[5*(f-3)+n]+buf[5*(f+4)+n];
00485       }
00486 
00487    /* fill in the gaps */
00488 
00489    /* the beginning */
00490    for(f=0; f<b && pbuf[f]==-1; f++);
00491 
00492    if(f==b)
00493       {
00494       free(buf-15);
00495       mp_msg(MSGT_VFILTER, MSGL_FATAL, "%s: No telecine pattern found!\n",
00496              vf_info_divtc.name);
00497       return 0;
00498       }
00499 
00500    for(n=0; n<f; pbuf[n++]=pbuf[f]);
00501 
00502    /* the end */
00503    for(f=b-1; pbuf[f]==-1; f--);
00504    for(n=f+1; n<b; pbuf[n++]=pbuf[f]);
00505 
00506    /* the rest */
00507    for(f=0;;)
00508       {
00509       while(f<b && pbuf[f]!=-1) f++;
00510       if(f==b) break;
00511       for(n=f; pbuf[n]==-1; n++);
00512 
00513       if(pbuf[f-1]==pbuf[n])
00514          {
00515          /* just a gap */
00516          while(f<n) pbuf[f++]=pbuf[n];
00517          }
00518       else
00519          {
00520          /* phase change, reanalyze the original data in the gap with zero
00521             threshold for only the two phases that appear at the ends */
00522 
00523          for(i=0; i<5; i++)
00524             for(sum[i]=0, j=5*f-15; j<5*f; j+=5)
00525                sum[i]+=buf[i+j];
00526 
00527          for(i=f; i<n; i++)
00528             {
00529             pbuf[i]=match(p, sum, pbuf[f-1], pbuf[n], 0);
00530 
00531             for(j=0; j<5; j++)
00532                sum[j]=sum[j]-buf[5*(i-3)+j]+buf[5*(i+4)+j];
00533             }
00534 
00535          /* estimate the transition point by dividing the gap
00536             in the same proportion as the number of matches of each kind */
00537 
00538          for(i=f, m=f; i<n; i++)
00539             if(pbuf[i]==pbuf[f-1]) m++;
00540 
00541          /* find the transition of the right direction nearest to the
00542             estimated point */
00543 
00544          if(m>f && m<n)
00545             {
00546             for(j=m; j>f; j--)
00547                if(pbuf[j-1]==pbuf[f-1] && pbuf[j]==pbuf[n]) break;
00548             for(s=m; s<n; s++)
00549                if(pbuf[s-1]==pbuf[f-1] && pbuf[s]==pbuf[n]) break;
00550 
00551             m=(s-m<m-j)?s:j;
00552             }
00553 
00554          /* and rewrite the data to allow only this one transition */
00555 
00556          for(i=f; i<m; i++)
00557             pbuf[i]=pbuf[f-1];
00558 
00559          for(; i<n; i++)
00560             pbuf[i]=pbuf[n];
00561 
00562          f=n;
00563          }
00564       }
00565 
00566    free(buf-15);
00567 
00568    return 1;
00569    }
00570 
00571 static int query_format(struct vf_instance *vf, unsigned int fmt)
00572    {
00573    switch(fmt)
00574       {
00575       case IMGFMT_444P: case IMGFMT_IYUV: case IMGFMT_RGB24:
00576       case IMGFMT_422P: case IMGFMT_UYVY: case IMGFMT_BGR24:
00577       case IMGFMT_411P: case IMGFMT_YUY2: case IMGFMT_IF09:
00578       case IMGFMT_YV12: case IMGFMT_I420: case IMGFMT_YVU9:
00579       case IMGFMT_IUYV: case IMGFMT_Y800: case IMGFMT_Y8:
00580          return vf_next_query_format(vf,fmt);
00581       }
00582 
00583    return 0;
00584    }
00585 
00586 static void uninit(struct vf_instance *vf)
00587    {
00588    if(vf->priv)
00589       {
00590       if(vf->priv->file) fclose(vf->priv->file);
00591       if(vf->priv->csdata) free(vf->priv->csdata-15);
00592       free(vf->priv->bdata);
00593       free(vf->priv->history);
00594       free(vf->priv);
00595       }
00596    }
00597 
00598 static int vf_open(vf_instance_t *vf, char *args)
00599    {
00600    struct vf_priv_s *p;
00601    const char *filename="framediff.log";
00602    char *ap, *q, *a;
00603 
00604    if(args && !(args=av_strdup(args)))
00605       {
00606    nomem:
00607       mp_msg(MSGT_VFILTER, MSGL_FATAL,
00608              "%s: Not enough memory.\n", vf->info->name);
00609    fail:
00610       uninit(vf);
00611       free(args);
00612       return 0;
00613       }
00614 
00615    vf->put_image=put_image;
00616    vf->uninit=uninit;
00617    vf->query_format=query_format;
00618    vf->default_reqs=VFCAP_ACCEPT_STRIDE;
00619    if(!(vf->priv=p=calloc(1, sizeof(struct vf_priv_s))))
00620       goto nomem;
00621 
00622    p->phase=5;
00623    p->threshold=0.5;
00624    p->window=30;
00625 
00626    if((ap=args))
00627       while(*ap)
00628          {
00629          q=ap;
00630          if((ap=strchr(q, ':'))) *ap++=0; else ap=q+strlen(q);
00631          if((a=strchr(q, '='))) *a++=0; else a=q+strlen(q);
00632 
00633          switch(*q)
00634             {
00635             case 0:                              break;
00636             case 'f': filename=a;                break;
00637             case 't': p->threshold=atof(a);      break;
00638             case 'w': p->window=5*(atoi(a)+4)/5; break;
00639             case 'd': p->deghost=atoi(a);        break;
00640             case 'p':
00641                if(q[1]=='h') p->phase=atoi(a);
00642                else p->pass=atoi(a);
00643                break;
00644 
00645             case 'h':
00646                mp_msg(MSGT_VFILTER, MSGL_INFO,
00647                       "\n%s options:\n\n"
00648                       "pass=1|2         - Use 2-pass mode.\n"
00649                       "file=filename    - Set the 2-pass log file name "
00650                       "(default %s).\n"
00651                       "threshold=value  - Set the pattern recognition "
00652                       "sensitivity (default %g).\n"
00653                       "deghost=value    - Select deghosting threshold "
00654                       "(default %d).\n"
00655                       "window=numframes - Set the statistics window "
00656                       "for 1-pass mode (default %d).\n"
00657                       "phase=0|1|2|3|4  - Set the initial phase "
00658                       "for 1-pass mode (default %d).\n\n"
00659                       "The option names can be abbreviated to the shortest "
00660                       "unique prefix.\n\n",
00661                       vf->info->name, filename, p->threshold, p->deghost,
00662                       p->window, p->phase%5);
00663                break;
00664 
00665             default:
00666                mp_msg(MSGT_VFILTER, MSGL_FATAL,
00667                       "%s: Unknown argument %s.\n", vf->info->name, q);
00668                goto fail;
00669             }
00670          }
00671 
00672    switch(p->pass)
00673       {
00674       case 1:
00675          if(!(p->file=fopen(filename, "w")))
00676             {
00677             mp_msg(MSGT_VFILTER, MSGL_FATAL,
00678                    "%s: Can't create file %s.\n", vf->info->name, filename);
00679             goto fail;
00680             }
00681 
00682          break;
00683 
00684       case 2:
00685          if(!(p->file=fopen(filename, "r")))
00686             {
00687             mp_msg(MSGT_VFILTER, MSGL_FATAL,
00688                    "%s: Can't open file %s.\n", vf->info->name, filename);
00689             goto fail;
00690             }
00691 
00692          if(!analyze(p))
00693             goto fail;
00694 
00695          fclose(p->file);
00696          p->file=0;
00697          break;
00698       }
00699 
00700    if(p->window<5) p->window=5;
00701    if(!(p->history=calloc(sizeof *p->history, p->window)))
00702       goto nomem;
00703 
00704    diff = diff_C;
00705 #if HAVE_MMX && HAVE_EBX_AVAILABLE
00706    if(gCpuCaps.hasMMX) diff = diff_MMX;
00707 #endif
00708 
00709    free(args);
00710    return 1;
00711    }
00712 
00713 const vf_info_t vf_info_divtc =
00714    {
00715    "inverse telecine for deinterlaced video",
00716    "divtc",
00717    "Ville Saari",
00718    "",
00719    vf_open,
00720    NULL
00721    };

Generated on Wed Apr 11 2012 07:31:35 for FFmpeg by  doxygen 1.7.1