[Mplayer-cvslog] CVS: main/libmpcodecs vf_delogo.c,NONE,1.1
Jindrich Makovicka CVS
henry at mplayerhq.hu
Thu Sep 4 00:44:24 CEST 2003
Update of /cvsroot/mplayer/main/libmpcodecs
In directory mail:/var/tmp.root/cvs-serv5476
Added Files:
vf_delogo.c
Log Message:
simple logo remover
--- NEW FILE ---
/*
Copyright (C) 2002 Jindrich Makovicka <makovick at kmlinux.fjfi.cvut.cz>
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; either version 2 of the License, or
(at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* A very simple tv station logo remover */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <math.h>
#include "../config.h"
#include "../mp_msg.h"
#include "../cpudetect.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 {
unsigned int outfmt;
int xoff, yoff, lw, lh, band, show;
};
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
#define MAX(a,b) (((a) > (b)) ? (a) : (b))
static void delogo(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int width, int height,
int logo_x, int logo_y, int logo_w, int logo_h, int band, int show) {
int y, x;
int interp, dist;
uint8_t *xdst, *xsrc;
uint8_t *topleft, *botleft, *topright;
int xclipl, xclipr, yclipt, yclipb;
xclipl = MAX(-logo_x, 0);
xclipr = MAX(logo_x+logo_w-width, 0);
yclipt = MAX(-logo_y, 0);
yclipb = MAX(logo_y+logo_h-height, 0);
topleft = src+MAX(logo_y,0)*srcStride+MAX(logo_x,0);
topright = src+MAX(logo_y,0)*srcStride+MIN(logo_x+logo_w-1,width-1);
botleft = src+MIN(logo_y+logo_h-1,height-1)*srcStride+MAX(logo_x,0);
for(y=0; y<height; y++)
{
for (x = 0, xdst = dst, xsrc = src; x < width; x++, xdst++, xsrc++) {
if (y >= logo_y && y < logo_y+logo_h && x >= logo_x && x < logo_x+logo_w) {
interp = ((topleft[srcStride*(y-logo_y-yclipt)]
+ topleft[srcStride*(y-logo_y-1-yclipt)]
+ topleft[srcStride*(y-logo_y+1-yclipt)])*(logo_w-(x-logo_x))/logo_w
+ (topright[srcStride*(y-logo_y-yclipt)]
+ topright[srcStride*(y-logo_y-1-yclipt)]
+ topright[srcStride*(y-logo_y+1-yclipt)])*(x-logo_x)/logo_w
+ (topleft[x-logo_x-xclipl]
+ topleft[x-logo_x-1-xclipl]
+ topleft[x-logo_x+1-xclipl])*(logo_h-(y-logo_y))/logo_h
+ (botleft[x-logo_x-xclipl]
+ botleft[x-logo_x-1-xclipl]
+ botleft[x-logo_x+1-xclipl])*(y-logo_y)/logo_h
)/6;
/* interp = (topleft[srcStride*(y-logo_y)]*(logo_w-(x-logo_x))/logo_w
+ topright[srcStride*(y-logo_y)]*(x-logo_x)/logo_w
+ topleft[x-logo_x]*(logo_h-(y-logo_y))/logo_h
+ botleft[x-logo_x]*(y-logo_y)/logo_h
)/2;*/
if (y >= logo_y+band && y < logo_y+logo_h-band && x >= logo_x+band && x < logo_x+logo_w-band) {
*xdst = interp;
} else {
dist = 0;
if (x < logo_x+band) dist = MAX(dist, logo_x-x+band);
else if (x >= logo_x+logo_w-band) dist = MAX(dist, x-(logo_x+logo_w-1-band));
if (y < logo_y+band) dist = MAX(dist, logo_y-y+band);
else if (y >= logo_y+logo_h-band) dist = MAX(dist, y-(logo_y+logo_h-1-band));
*xdst = (*xsrc*dist + interp*(band-dist))/band;
if (show && dist == band) *xdst = 0;
}
} else {
*xdst = *xsrc;
}
}
dst+= dstStride;
src+= srcStride;
}
}
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 get_image(struct vf_instance_s* vf, mp_image_t *mpi){
if(mpi->flags&MP_IMGFLAG_PRESERVE) return; // don't change
if(mpi->imgfmt!=vf->priv->outfmt) return; // colorspace differ
// ok, we can do pp in-place (or pp disabled):
vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
mpi->type, mpi->flags, mpi->w, mpi->h);
mpi->planes[0]=vf->dmpi->planes[0];
mpi->stride[0]=vf->dmpi->stride[0];
mpi->width=vf->dmpi->width;
if(mpi->flags&MP_IMGFLAG_PLANAR){
mpi->planes[1]=vf->dmpi->planes[1];
mpi->planes[2]=vf->dmpi->planes[2];
mpi->stride[1]=vf->dmpi->stride[1];
mpi->stride[2]=vf->dmpi->stride[2];
}
mpi->flags|=MP_IMGFLAG_DIRECT;
}
static int put_image(struct vf_instance_s* vf, mp_image_t *mpi){
mp_image_t *dmpi;
if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
// no DR, so get a new image! hope we'll get DR buffer:
vf->dmpi=vf_get_image(vf->next,vf->priv->outfmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
mpi->w,mpi->h);
}
dmpi= vf->dmpi;
delogo(dmpi->planes[0], mpi->planes[0], dmpi->stride[0], mpi->stride[0], mpi->w, mpi->h,
vf->priv->xoff, vf->priv->yoff, vf->priv->lw, vf->priv->lh, vf->priv->band, vf->priv->show);
delogo(dmpi->planes[1], mpi->planes[1], dmpi->stride[1], mpi->stride[1], mpi->w/2, mpi->h/2,
vf->priv->xoff/2, vf->priv->yoff/2, vf->priv->lw/2, vf->priv->lh/2, vf->priv->band/2, vf->priv->show);
delogo(dmpi->planes[2], mpi->planes[2], dmpi->stride[2], mpi->stride[2], mpi->w/2, mpi->h/2,
vf->priv->xoff/2, vf->priv->yoff/2, vf->priv->lw/2, vf->priv->lh/2, vf->priv->band/2, vf->priv->show);
vf_clone_mpi_attributes(dmpi, mpi);
return vf_next_put_image(vf,dmpi);
}
static void uninit(struct vf_instance_s* vf){
if(!vf->priv) return;
free(vf->priv);
vf->priv=NULL;
}
//===========================================================================//
static int query_format(struct vf_instance_s* vf, unsigned int fmt){
switch(fmt)
{
case IMGFMT_YV12:
case IMGFMT_I420:
case IMGFMT_IYUV:
return vf_next_query_format(vf,vf->priv->outfmt);
}
return 0;
}
static unsigned int fmt_list[]={
IMGFMT_YV12,
IMGFMT_I420,
IMGFMT_IYUV,
0
};
static int open(vf_instance_t *vf, char* args){
int res;
vf->config=config;
vf->put_image=put_image;
vf->get_image=get_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));
if (args) res = sscanf(args, "%d:%d:%d:%d:%d",
&vf->priv->xoff, &vf->priv->yoff,
&vf->priv->lw, &vf->priv->lh,
&vf->priv->band);
if (res != 5) {
mp_msg(MSGT_VFILTER, MSGL_ERR, "deLogo: syntax is \"delogo=xoff:yoff:width:height:band\"\n");
uninit(vf);
return 0;
}
mp_msg(MSGT_VFILTER, MSGL_INFO, "deLogo: %d x %d, %d ; %d ; band = %d\n",
&vf->priv->lw, &vf->priv->lh,
&vf->priv->xoff, &vf->priv->yoff,
&vf->priv->band);
vf->priv->show = 0;
if (vf->priv->band < 0) {
vf->priv->band = 2;
vf->priv->show = 1;
}
vf->priv->lw += vf->priv->band*2;
vf->priv->lh += vf->priv->band*2;
vf->priv->xoff -= vf->priv->band;
vf->priv->yoff -= vf->priv->band;
// check csp:
vf->priv->outfmt=vf_match_csp(&vf->next,fmt_list,IMGFMT_YV12);
if(!vf->priv->outfmt)
{
uninit(vf);
return 0; // no csp match :(
}
return 1;
}
vf_info_t vf_info_delogo = {
"simple logo remover",
"delogo",
"Jindrich Makovicka",
"",
open,
NULL
};
//===========================================================================//
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