mirror of https://github.com/FFmpeg/FFmpeg.git
The delogo filter has been natively integrated into libavfilter, simplify.pull/2/head
Stefano Sabatini
14 years ago
parent
2701f6cc6a
commit
6e89bdfecf
5 changed files with 1 additions and 257 deletions
@ -1,252 +0,0 @@ |
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/*
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* Copyright (C) 2002 Jindrich Makovicka <makovick@gmail.com> |
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* |
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* This file is part of MPlayer. |
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* |
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* MPlayer 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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* |
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* MPlayer 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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* |
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* You should have received a copy of the GNU General Public License along |
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* with MPlayer; if not, write to the Free Software Foundation, Inc., |
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* 51 Franklin Street, 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 "mp_msg.h" |
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#include "cpudetect.h" |
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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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//===========================================================================//
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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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}; |
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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 *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 *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 *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 *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 *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 const 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 vf_open(vf_instance_t *vf, char *args){ |
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int res=0; |
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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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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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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 (res != 5) { |
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mp_msg(MSGT_VFILTER, MSGL_ERR, "deLogo: syntax is \"delogo=xoff:yoff:width:height:band\"\n"); |
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uninit(vf); |
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return 0; |
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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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const 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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vf_open, |
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}; |
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//===========================================================================//
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