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mpv/libmpcodecs/vf_kerndeint.c
cehoyos 90a29e3ade allows to de- and reactivate kerndeint on the fly 
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@22775 b3059339-0415-0410-9bf9-f77b7e298cf2
2007-03-22 10:06:34 +00:00

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/*
Original AVISynth Filter Copyright (C) 2003 Donald A. Graft
Adapted to MPlayer by Tobias Diedrich
This program 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.
This program 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 this program; 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 <inttypes.h>
#include <math.h>
#include "config.h"
#include "mp_msg.h"
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "libvo/fastmemcpy.h"
//===========================================================================//
struct vf_priv_s {
int frame;
int map;
int order;
int thresh;
int sharp;
int twoway;
int do_deinterlace;
};
/***************************************************************************/
static int config(struct vf_instance_s* vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt){
return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
}
static void uninit(struct vf_instance_s* vf)
{
free(vf->priv);
}
static inline int IsRGB(mp_image_t *mpi)
{
return mpi->imgfmt == IMGFMT_RGB;
}
static inline int IsYUY2(mp_image_t *mpi)
{
return mpi->imgfmt == IMGFMT_YUY2;
}
#define PLANAR_Y 0
#define PLANAR_U 1
#define PLANAR_V 2
static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
int cw= mpi->w >> mpi->chroma_x_shift;
int ch= mpi->h >> mpi->chroma_y_shift;
int W = mpi->w, H = mpi->h;
const unsigned char *prvp, *prvpp, *prvpn, *prvpnn, *prvppp, *prvp4p, *prvp4n;
const unsigned char *srcp_saved;
const unsigned char *srcp, *srcpp, *srcpn, *srcpnn, *srcppp, *srcp3p, *srcp3n, *srcp4p, *srcp4n;
unsigned char *dstp, *dstp_saved;
int src_pitch;
int psrc_pitch;
int dst_pitch;
int x, y, z;
int n = vf->priv->frame++;
int val, hi, lo, w, h;
double valf;
int plane;
int threshold = vf->priv->thresh;
int order = vf->priv->order;
int map = vf->priv->map;
int sharp = vf->priv->sharp;
int twoway = vf->priv->twoway;
mp_image_t *dmpi, *pmpi;
if(!vf->priv->do_deinterlace)
return vf_next_put_image(vf, mpi, pts);
dmpi=vf_get_image(vf->next,mpi->imgfmt,
MP_IMGTYPE_IP, MP_IMGFLAG_ACCEPT_STRIDE,
mpi->w,mpi->h);
pmpi=vf_get_image(vf->next,mpi->imgfmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
mpi->w,mpi->h);
if(!dmpi) return 0;
for (z=0; z<mpi->num_planes; z++) {
if (z == 0) plane = PLANAR_Y;
else if (z == 1) plane = PLANAR_U;
else plane = PLANAR_V;
h = plane == PLANAR_Y ? H : ch;
w = plane == PLANAR_Y ? W : cw;
srcp = srcp_saved = mpi->planes[z];
src_pitch = mpi->stride[z];
psrc_pitch = pmpi->stride[z];
dstp = dstp_saved = dmpi->planes[z];
dst_pitch = dmpi->stride[z];
srcp = srcp_saved + (1-order) * src_pitch;
dstp = dstp_saved + (1-order) * dst_pitch;
for (y=0; y<h; y+=2) {
memcpy(dstp, srcp, w);
srcp += 2*src_pitch;
dstp += 2*dst_pitch;
}
// Copy through the lines that will be missed below.
memcpy(dstp_saved + order*dst_pitch, srcp_saved + (1-order)*src_pitch, w);
memcpy(dstp_saved + (2+order)*dst_pitch, srcp_saved + (3-order)*src_pitch, w);
memcpy(dstp_saved + (h-2+order)*dst_pitch, srcp_saved + (h-1-order)*src_pitch, w);
memcpy(dstp_saved + (h-4+order)*dst_pitch, srcp_saved + (h-3-order)*src_pitch, w);
/* For the other field choose adaptively between using the previous field
or the interpolant from the current field. */
prvp = pmpi->planes[z] + 5*psrc_pitch - (1-order)*psrc_pitch;
prvpp = prvp - psrc_pitch;
prvppp = prvp - 2*psrc_pitch;
prvp4p = prvp - 4*psrc_pitch;
prvpn = prvp + psrc_pitch;
prvpnn = prvp + 2*psrc_pitch;
prvp4n = prvp + 4*psrc_pitch;
srcp = srcp_saved + 5*src_pitch - (1-order)*src_pitch;
srcpp = srcp - src_pitch;
srcppp = srcp - 2*src_pitch;
srcp3p = srcp - 3*src_pitch;
srcp4p = srcp - 4*src_pitch;
srcpn = srcp + src_pitch;
srcpnn = srcp + 2*src_pitch;
srcp3n = srcp + 3*src_pitch;
srcp4n = srcp + 4*src_pitch;
dstp = dstp_saved + 5*dst_pitch - (1-order)*dst_pitch;
for (y = 5 - (1-order); y <= h - 5 - (1-order); y+=2)
{
for (x = 0; x < w; x++)
{
if ((threshold == 0) || (n == 0) ||
(abs((int)prvp[x] - (int)srcp[x]) > threshold) ||
(abs((int)prvpp[x] - (int)srcpp[x]) > threshold) ||
(abs((int)prvpn[x] - (int)srcpn[x]) > threshold))
{
if (map == 1)
{
int g = x & ~3;
if (IsRGB(mpi) == 1)
{
dstp[g++] = 255;
dstp[g++] = 255;
dstp[g++] = 255;
dstp[g] = 255;
x = g;
}
else if (IsYUY2(mpi) == 1)
{
dstp[g++] = 235;
dstp[g++] = 128;
dstp[g++] = 235;
dstp[g] = 128;
x = g;
}
else
{
if (plane == PLANAR_Y) dstp[x] = 235;
else dstp[x] = 128;
}
}
else
{
if (IsRGB(mpi))
{
hi = 255;
lo = 0;
}
else if (IsYUY2(mpi))
{
hi = (x & 1) ? 240 : 235;
lo = 16;
}
else
{
hi = (plane == PLANAR_Y) ? 235 : 240;
lo = 16;
}
if (sharp == 1)
{
if (twoway == 1)
valf = + 0.526*((int)srcpp[x] + (int)srcpn[x])
+ 0.170*((int)srcp[x] + (int)prvp[x])
- 0.116*((int)srcppp[x] + (int)srcpnn[x] + (int)prvppp[x] + (int)prvpnn[x])
- 0.026*((int)srcp3p[x] + (int)srcp3n[x])
+ 0.031*((int)srcp4p[x] + (int)srcp4n[x] + (int)prvp4p[x] + (int)prvp4n[x]);
else
valf = + 0.526*((int)srcpp[x] + (int)srcpn[x])
+ 0.170*((int)prvp[x])
- 0.116*((int)prvppp[x] + (int)prvpnn[x])
- 0.026*((int)srcp3p[x] + (int)srcp3n[x])
+ 0.031*((int)prvp4p[x] + (int)prvp4p[x]);
if (valf > hi) valf = hi;
else if (valf < lo) valf = lo;
dstp[x] = (int) valf;
}
else
{
if (twoway == 1)
val = (8*((int)srcpp[x] + (int)srcpn[x]) + 2*((int)srcp[x] + (int)prvp[x]) -
(int)(srcppp[x]) - (int)(srcpnn[x]) -
(int)(prvppp[x]) - (int)(prvpnn[x])) >> 4;
else
val = (8*((int)srcpp[x] + (int)srcpn[x]) + 2*((int)prvp[x]) -
(int)(prvppp[x]) - (int)(prvpnn[x])) >> 4;
if (val > hi) val = hi;
else if (val < lo) val = lo;
dstp[x] = (int) val;
}
}
}
else
{
dstp[x] = srcp[x];
}
}
prvp += 2*psrc_pitch;
prvpp += 2*psrc_pitch;
prvppp += 2*psrc_pitch;
prvpn += 2*psrc_pitch;
prvpnn += 2*psrc_pitch;
prvp4p += 2*psrc_pitch;
prvp4n += 2*psrc_pitch;
srcp += 2*src_pitch;
srcpp += 2*src_pitch;
srcppp += 2*src_pitch;
srcp3p += 2*src_pitch;
srcp4p += 2*src_pitch;
srcpn += 2*src_pitch;
srcpnn += 2*src_pitch;
srcp3n += 2*src_pitch;
srcp4n += 2*src_pitch;
dstp += 2*dst_pitch;
}
srcp = mpi->planes[z];
dstp = pmpi->planes[z];
for (y=0; y<h; y++) {
memcpy(dstp, srcp, w);
srcp += src_pitch;
dstp += psrc_pitch;
}
}
return vf_next_put_image(vf,dmpi, pts);
}
//===========================================================================//
static int query_format(struct vf_instance_s* vf, unsigned int fmt){
switch(fmt)
{
case IMGFMT_YV12:
case IMGFMT_RGB:
case IMGFMT_YUY2:
return vf_next_query_format(vf, fmt);
}
return 0;
}
static int control(struct vf_instance_s* vf, int request, void* data){
switch (request)
{
case VFCTRL_GET_DEINTERLACE:
*(int*)data = vf->priv->do_deinterlace;
return CONTROL_OK;
case VFCTRL_SET_DEINTERLACE:
vf->priv->do_deinterlace = *(int*)data;
return CONTROL_OK;
}
return vf_next_control (vf, request, data);
}
static int open(vf_instance_t *vf, char* args){
vf->control=control;
vf->config=config;
vf->put_image=put_image;
vf->query_format=query_format;
vf->uninit=uninit;
vf->priv=malloc(sizeof(struct vf_priv_s));
memset(vf->priv, 0, sizeof(struct vf_priv_s));
vf->priv->frame = 0;
vf->priv->map = 0;
vf->priv->order = 0;
vf->priv->thresh = 10;
vf->priv->sharp = 0;
vf->priv->twoway = 0;
vf->priv->do_deinterlace=1;
if (args)
{
sscanf(args, "%d:%d:%d:%d:%d",
&vf->priv->thresh, &vf->priv->map,
&vf->priv->order, &vf->priv->sharp,
&vf->priv->twoway);
}
if (vf->priv->order > 1) vf->priv->order = 1;
return 1;
}
vf_info_t vf_info_kerndeint = {
"Kernel Deinterlacer",
"kerndeint",
"Donald Graft",
"",
open,
NULL
};
//===========================================================================//
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