1
0
mirror of https://github.com/mpv-player/mpv synced 2024-12-23 23:32:26 +00:00
mpv/libmpcodecs/vf_phase.c
Rudolf Polzer 994b21a80a vf_*: fix pts values passed to the next filter
Many video filters failed to calculate or even just pass through pts
values for their output frames. Fix this, and also make the two
remaining filters that called vf_next_put_image() twice for the same
input frame (vf_softpulldown, vf_telecine) use vf_queue_frame() so
that e.g. framestepping properly sees both frames.

Changed filters: vf_bmovl, vf_detc, vf_divtc, vf_filmdint, vf_ivtc,
vf_lavc, vf_phase, vf_pullup, vf_softpulldown, vf_telecine, vf_tile,
vf_tinterlace.
2011-04-24 03:55:47 +03:00

302 lines
7.9 KiB
C

/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include "config.h"
#include "mp_msg.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "libvo/fastmemcpy.h"
enum mode { PROGRESSIVE, TOP_FIRST, BOTTOM_FIRST,
TOP_FIRST_ANALYZE, BOTTOM_FIRST_ANALYZE,
ANALYZE, FULL_ANALYZE, AUTO, AUTO_ANALYZE };
#define fixed_mode(p) ((p)<=BOTTOM_FIRST)
struct vf_priv_s
{
enum mode mode;
int verbose;
unsigned char *buf[3];
};
/*
* Copy fields from either current or buffered previous frame to the
* output and store the current frame unmodified to the buffer.
*/
static void do_plane(unsigned char *to, unsigned char *from,
int w, int h, int ts, int fs,
unsigned char **bufp, enum mode mode)
{
unsigned char *buf, *end;
int top;
if(!*bufp)
{
mode=PROGRESSIVE;
if(!(*bufp=malloc(h*w))) return;
}
for(end=to+h*ts, buf=*bufp, top=1; to<end; from+=fs, to+=ts, buf+=w, top^=1)
{
fast_memcpy(to, mode==(top?BOTTOM_FIRST:TOP_FIRST)?buf:from, w);
fast_memcpy(buf, from, w);
}
}
/*
* This macro interpolates the value of both fields at a point halfway
* between lines and takes the squared difference. In field resolution
* the point is a quarter pixel below a line in one field and a quarter
* pixel above a line in other.
*
* (the result is actually multiplied by 25)
*/
#define diff(a, as, b, bs) (t=((*a-b[bs])<<2)+a[as<<1]-b[-bs], t*t)
/*
* Find which field combination has the smallest average squared difference
* between the fields.
*/
static enum mode analyze_plane(unsigned char *old, unsigned char *new,
int w, int h, int os, int ns, enum mode mode,
int verbose, int fields)
{
double bdiff, pdiff, tdiff, scale;
int bdif, tdif, pdif;
int top, t;
unsigned char *end, *rend;
if(mode==AUTO)
mode=fields&MP_IMGFIELD_ORDERED?fields&MP_IMGFIELD_TOP_FIRST?
TOP_FIRST:BOTTOM_FIRST:PROGRESSIVE;
else if(mode==AUTO_ANALYZE)
mode=fields&MP_IMGFIELD_ORDERED?fields&MP_IMGFIELD_TOP_FIRST?
TOP_FIRST_ANALYZE:BOTTOM_FIRST_ANALYZE:FULL_ANALYZE;
if(fixed_mode(mode))
bdiff=pdiff=tdiff=65536.0;
else
{
bdiff=pdiff=tdiff=0.0;
for(end=new+(h-2)*ns, new+=ns, old+=os, top=0;
new<end; new+=ns-w, old+=os-w, top^=1)
{
pdif=tdif=bdif=0;
switch(mode)
{
case TOP_FIRST_ANALYZE:
if(top)
for(rend=new+w; new<rend; new++, old++)
pdif+=diff(new, ns, new, ns),
tdif+=diff(new, ns, old, os);
else
for(rend=new+w; new<rend; new++, old++)
pdif+=diff(new, ns, new, ns),
tdif+=diff(old, os, new, ns);
break;
case BOTTOM_FIRST_ANALYZE:
if(top)
for(rend=new+w; new<rend; new++, old++)
pdif+=diff(new, ns, new, ns),
bdif+=diff(old, os, new, ns);
else
for(rend=new+w; new<rend; new++, old++)
pdif+=diff(new, ns, new, ns),
bdif+=diff(new, ns, old, os);
break;
case ANALYZE:
if(top)
for(rend=new+w; new<rend; new++, old++)
tdif+=diff(new, ns, old, os),
bdif+=diff(old, os, new, ns);
else
for(rend=new+w; new<rend; new++, old++)
bdif+=diff(new, ns, old, os),
tdif+=diff(old, os, new, ns);
break;
default: /* FULL_ANALYZE */
if(top)
for(rend=new+w; new<rend; new++, old++)
pdif+=diff(new, ns, new, ns),
tdif+=diff(new, ns, old, os),
bdif+=diff(old, os, new, ns);
else
for(rend=new+w; new<rend; new++, old++)
pdif+=diff(new, ns, new, ns),
bdif+=diff(new, ns, old, os),
tdif+=diff(old, os, new, ns);
}
pdiff+=(double)pdif;
tdiff+=(double)tdif;
bdiff+=(double)bdif;
}
scale=1.0/(w*(h-3))/25.0;
pdiff*=scale;
tdiff*=scale;
bdiff*=scale;
if(mode==TOP_FIRST_ANALYZE)
bdiff=65536.0;
else if(mode==BOTTOM_FIRST_ANALYZE)
tdiff=65536.0;
else if(mode==ANALYZE)
pdiff=65536.0;
if(bdiff<pdiff && bdiff<tdiff)
mode=BOTTOM_FIRST;
else if(tdiff<pdiff && tdiff<bdiff)
mode=TOP_FIRST;
else
mode=PROGRESSIVE;
}
if( mp_msg_test(MSGT_VFILTER,MSGL_V) )
{
mp_msg(MSGT_VFILTER, MSGL_INFO, "%c", mode==BOTTOM_FIRST?'b':mode==TOP_FIRST?'t':'p');
if(tdiff==65536.0) mp_msg(MSGT_VFILTER, MSGL_INFO," N/A "); else mp_msg(MSGT_VFILTER, MSGL_INFO," %8.2f", tdiff);
if(bdiff==65536.0) mp_msg(MSGT_VFILTER, MSGL_INFO," N/A "); else mp_msg(MSGT_VFILTER, MSGL_INFO," %8.2f", bdiff);
if(pdiff==65536.0) mp_msg(MSGT_VFILTER, MSGL_INFO," N/A "); else mp_msg(MSGT_VFILTER, MSGL_INFO," %8.2f", pdiff);
mp_msg(MSGT_VFILTER, MSGL_INFO," \n");
}
return mode;
}
static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts)
{
mp_image_t *dmpi;
int w;
enum mode mode;
if(!(dmpi=vf_get_image(vf->next, mpi->imgfmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
mpi->w, mpi->h)))
return 0;
w=dmpi->w;
if(!(dmpi->flags&MP_IMGFLAG_PLANAR))
w*=dmpi->bpp/8;
mode=vf->priv->mode;
if(!vf->priv->buf[0])
mode=PROGRESSIVE;
else
mode=analyze_plane(vf->priv->buf[0], mpi->planes[0],
w, dmpi->h, w, mpi->stride[0], mode,
vf->priv->verbose, mpi->fields);
do_plane(dmpi->planes[0], mpi->planes[0],
w, dmpi->h,
dmpi->stride[0], mpi->stride[0],
&vf->priv->buf[0], mode);
if(dmpi->flags&MP_IMGFLAG_PLANAR)
{
do_plane(dmpi->planes[1], mpi->planes[1],
dmpi->chroma_width, dmpi->chroma_height,
dmpi->stride[1], mpi->stride[1],
&vf->priv->buf[1], mode);
do_plane(dmpi->planes[2], mpi->planes[2],
dmpi->chroma_width, dmpi->chroma_height,
dmpi->stride[2], mpi->stride[2],
&vf->priv->buf[2], mode);
}
return vf_next_put_image(vf, dmpi, pts);
}
static void uninit(struct vf_instance *vf)
{
free(vf->priv->buf[0]);
free(vf->priv->buf[1]);
free(vf->priv->buf[2]);
free(vf->priv);
}
static int vf_open(vf_instance_t *vf, char *args)
{
vf->put_image = put_image;
vf->uninit = uninit;
vf->default_reqs = VFCAP_ACCEPT_STRIDE;
if(!(vf->priv = calloc(1, sizeof(struct vf_priv_s))))
{
uninit(vf);
return 0;
}
vf->priv->mode=AUTO_ANALYZE;
vf->priv->verbose=0;
while(args && *args)
{
switch(*args)
{
case 't': vf->priv->mode=TOP_FIRST; break;
case 'a': vf->priv->mode=AUTO; break;
case 'b': vf->priv->mode=BOTTOM_FIRST; break;
case 'u': vf->priv->mode=ANALYZE; break;
case 'T': vf->priv->mode=TOP_FIRST_ANALYZE; break;
case 'A': vf->priv->mode=AUTO_ANALYZE; break;
case 'B': vf->priv->mode=BOTTOM_FIRST_ANALYZE; break;
case 'U': vf->priv->mode=FULL_ANALYZE; break;
case 'p': vf->priv->mode=PROGRESSIVE; break;
case 'v': vf->priv->verbose=1; break;
case ':': break;
default:
uninit(vf);
return 0; /* bad args */
}
if( (args=strchr(args, ':')) ) args++;
}
return 1;
}
const vf_info_t vf_info_phase =
{
"phase shift fields",
"phase",
"Ville Saari",
"",
vf_open,
NULL
};