mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 16:33:02 +00:00
6d32d91eca
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@22045 b3059339-0415-0410-9bf9-f77b7e298cf2
283 lines
8.4 KiB
C
283 lines
8.4 KiB
C
/*
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Copyright (C) 2002 Jindrich Makovicka <makovick@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/* A very simple tv station logo remover */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <inttypes.h>
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#include <math.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "cpudetect.h"
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#ifdef HAVE_MALLOC_H
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#include <malloc.h>
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#endif
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#include "img_format.h"
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#include "mp_image.h"
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#include "vf.h"
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#include "libvo/fastmemcpy.h"
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#include "m_option.h"
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#include "m_struct.h"
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//===========================================================================//
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static struct vf_priv_s {
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unsigned int outfmt;
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int xoff, yoff, lw, lh, band, show;
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} const vf_priv_dflt = {
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0,
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0, 0, 0, 0, 0, 0
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};
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#define MIN(a,b) (((a) < (b)) ? (a) : (b))
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#define MAX(a,b) (((a) > (b)) ? (a) : (b))
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static void delogo(uint8_t *dst, uint8_t *src, int dstStride, int srcStride, int width, int height,
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int logo_x, int logo_y, int logo_w, int logo_h, int band, int show, int direct) {
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int y, x;
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int interp, dist;
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uint8_t *xdst, *xsrc;
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uint8_t *topleft, *botleft, *topright;
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int xclipl, xclipr, yclipt, yclipb;
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int logo_x1, logo_x2, logo_y1, logo_y2;
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xclipl = MAX(-logo_x, 0);
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xclipr = MAX(logo_x+logo_w-width, 0);
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yclipt = MAX(-logo_y, 0);
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yclipb = MAX(logo_y+logo_h-height, 0);
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logo_x1 = logo_x + xclipl;
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logo_x2 = logo_x + logo_w - xclipr;
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logo_y1 = logo_y + yclipt;
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logo_y2 = logo_y + logo_h - yclipb;
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topleft = src+logo_y1*srcStride+logo_x1;
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topright = src+logo_y1*srcStride+logo_x2-1;
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botleft = src+(logo_y2-1)*srcStride+logo_x1;
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if (!direct) memcpy_pic(dst, src, width, height, dstStride, srcStride);
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dst += (logo_y1+1)*dstStride;
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src += (logo_y1+1)*srcStride;
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for(y = logo_y1+1; y < logo_y2-1; y++)
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{
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for (x = logo_x1+1, xdst = dst+logo_x1+1, xsrc = src+logo_x1+1; x < logo_x2-1; x++, xdst++, xsrc++) {
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interp = ((topleft[srcStride*(y-logo_y-yclipt)]
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+ topleft[srcStride*(y-logo_y-1-yclipt)]
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+ topleft[srcStride*(y-logo_y+1-yclipt)])*(logo_w-(x-logo_x))/logo_w
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+ (topright[srcStride*(y-logo_y-yclipt)]
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+ topright[srcStride*(y-logo_y-1-yclipt)]
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+ topright[srcStride*(y-logo_y+1-yclipt)])*(x-logo_x)/logo_w
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+ (topleft[x-logo_x-xclipl]
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+ topleft[x-logo_x-1-xclipl]
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+ topleft[x-logo_x+1-xclipl])*(logo_h-(y-logo_y))/logo_h
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+ (botleft[x-logo_x-xclipl]
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+ botleft[x-logo_x-1-xclipl]
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+ botleft[x-logo_x+1-xclipl])*(y-logo_y)/logo_h
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)/6;
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/* interp = (topleft[srcStride*(y-logo_y)]*(logo_w-(x-logo_x))/logo_w
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+ topright[srcStride*(y-logo_y)]*(x-logo_x)/logo_w
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+ topleft[x-logo_x]*(logo_h-(y-logo_y))/logo_h
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+ botleft[x-logo_x]*(y-logo_y)/logo_h
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)/2;*/
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if (y >= logo_y+band && y < logo_y+logo_h-band && x >= logo_x+band && x < logo_x+logo_w-band) {
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*xdst = interp;
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} else {
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dist = 0;
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if (x < logo_x+band) dist = MAX(dist, logo_x-x+band);
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else if (x >= logo_x+logo_w-band) dist = MAX(dist, x-(logo_x+logo_w-1-band));
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if (y < logo_y+band) dist = MAX(dist, logo_y-y+band);
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else if (y >= logo_y+logo_h-band) dist = MAX(dist, y-(logo_y+logo_h-1-band));
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*xdst = (*xsrc*dist + interp*(band-dist))/band;
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if (show && (dist == band-1)) *xdst = 0;
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}
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}
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dst+= dstStride;
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src+= srcStride;
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}
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}
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static int config(struct vf_instance_s* vf,
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int width, int height, int d_width, int d_height,
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unsigned int flags, unsigned int outfmt){
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return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
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}
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static void get_image(struct vf_instance_s* vf, mp_image_t *mpi){
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if(mpi->flags&MP_IMGFLAG_PRESERVE) return; // don't change
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if(mpi->imgfmt!=vf->priv->outfmt) return; // colorspace differ
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// ok, we can do pp in-place (or pp disabled):
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vf->dmpi=vf_get_image(vf->next,mpi->imgfmt,
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mpi->type, mpi->flags, mpi->w, mpi->h);
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mpi->planes[0]=vf->dmpi->planes[0];
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mpi->stride[0]=vf->dmpi->stride[0];
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mpi->width=vf->dmpi->width;
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if(mpi->flags&MP_IMGFLAG_PLANAR){
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mpi->planes[1]=vf->dmpi->planes[1];
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mpi->planes[2]=vf->dmpi->planes[2];
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mpi->stride[1]=vf->dmpi->stride[1];
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mpi->stride[2]=vf->dmpi->stride[2];
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}
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mpi->flags|=MP_IMGFLAG_DIRECT;
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}
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static int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts){
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mp_image_t *dmpi;
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if(!(mpi->flags&MP_IMGFLAG_DIRECT)){
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// no DR, so get a new image! hope we'll get DR buffer:
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vf->dmpi=vf_get_image(vf->next,vf->priv->outfmt,
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MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
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mpi->w,mpi->h);
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}
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dmpi= vf->dmpi;
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delogo(dmpi->planes[0], mpi->planes[0], dmpi->stride[0], mpi->stride[0], mpi->w, mpi->h,
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vf->priv->xoff, vf->priv->yoff, vf->priv->lw, vf->priv->lh, vf->priv->band, vf->priv->show,
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mpi->flags&MP_IMGFLAG_DIRECT);
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delogo(dmpi->planes[1], mpi->planes[1], dmpi->stride[1], mpi->stride[1], mpi->w/2, mpi->h/2,
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vf->priv->xoff/2, vf->priv->yoff/2, vf->priv->lw/2, vf->priv->lh/2, vf->priv->band/2, vf->priv->show,
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mpi->flags&MP_IMGFLAG_DIRECT);
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delogo(dmpi->planes[2], mpi->planes[2], dmpi->stride[2], mpi->stride[2], mpi->w/2, mpi->h/2,
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vf->priv->xoff/2, vf->priv->yoff/2, vf->priv->lw/2, vf->priv->lh/2, vf->priv->band/2, vf->priv->show,
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mpi->flags&MP_IMGFLAG_DIRECT);
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vf_clone_mpi_attributes(dmpi, mpi);
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return vf_next_put_image(vf,dmpi, pts);
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}
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static void uninit(struct vf_instance_s* vf){
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if(!vf->priv) return;
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free(vf->priv);
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vf->priv=NULL;
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}
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//===========================================================================//
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static int query_format(struct vf_instance_s* vf, unsigned int fmt){
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switch(fmt)
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{
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case IMGFMT_YV12:
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case IMGFMT_I420:
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case IMGFMT_IYUV:
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return vf_next_query_format(vf,vf->priv->outfmt);
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}
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return 0;
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}
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static unsigned int fmt_list[]={
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IMGFMT_YV12,
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IMGFMT_I420,
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IMGFMT_IYUV,
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0
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};
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static int open(vf_instance_t *vf, char* args){
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int res;
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vf->config=config;
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vf->put_image=put_image;
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vf->get_image=get_image;
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vf->query_format=query_format;
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vf->uninit=uninit;
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if (!vf->priv)
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{
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vf->priv=malloc(sizeof(struct vf_priv_s));
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memset(vf->priv, 0, sizeof(struct vf_priv_s));
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}
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if (args) res = sscanf(args, "%d:%d:%d:%d:%d",
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&vf->priv->xoff, &vf->priv->yoff,
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&vf->priv->lw, &vf->priv->lh,
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&vf->priv->band);
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if (args && (res != 5)) {
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uninit(vf);
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return 0; // bad syntax
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}
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mp_msg(MSGT_VFILTER, MSGL_V, "delogo: %d x %d, %d x %d, band = %d\n",
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vf->priv->xoff, vf->priv->yoff,
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vf->priv->lw, vf->priv->lh,
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vf->priv->band);
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vf->priv->show = 0;
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if (vf->priv->band < 0) {
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vf->priv->band = 4;
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vf->priv->show = 1;
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}
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vf->priv->lw += vf->priv->band*2;
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vf->priv->lh += vf->priv->band*2;
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vf->priv->xoff -= vf->priv->band;
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vf->priv->yoff -= vf->priv->band;
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// check csp:
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vf->priv->outfmt=vf_match_csp(&vf->next,fmt_list,IMGFMT_YV12);
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if(!vf->priv->outfmt)
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{
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uninit(vf);
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return 0; // no csp match :(
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}
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return 1;
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}
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#define ST_OFF(f) M_ST_OFF(struct vf_priv_s,f)
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static m_option_t vf_opts_fields[] = {
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{ "x", ST_OFF(xoff), CONF_TYPE_INT, 0, 0, 0, NULL },
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{ "y", ST_OFF(yoff), CONF_TYPE_INT, 0, 0, 0, NULL },
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{ "w", ST_OFF(lw), CONF_TYPE_INT, 0, 0, 0, NULL },
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{ "h", ST_OFF(lh), CONF_TYPE_INT, 0, 0, 0, NULL },
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{ "t", ST_OFF(band), CONF_TYPE_INT, 0, 0, 0, NULL },
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{ "band", ST_OFF(band), CONF_TYPE_INT, 0, 0, 0, NULL }, // alias
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{ NULL, NULL, 0, 0, 0, 0, NULL }
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};
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static m_struct_t vf_opts = {
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"delogo",
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sizeof(struct vf_priv_s),
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&vf_priv_dflt,
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vf_opts_fields
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};
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vf_info_t vf_info_delogo = {
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"simple logo remover",
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"delogo",
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"Jindrich Makovicka, Alex Beregszaszi",
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"",
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open,
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&vf_opts
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};
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//===========================================================================//
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