| /* |
| * Copyright (C) 2002 Jindrich Makovicka <makovick@gmail.com> |
| * |
| * 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. |
| */ |
| |
| /* A very simple tv station logo remover */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <inttypes.h> |
| #include <math.h> |
| |
| #include "mp_msg.h" |
| #include "cpudetect.h" |
| #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 direct) { |
| int y, x; |
| int interp, dist; |
| uint8_t *xdst, *xsrc; |
| |
| uint8_t *topleft, *botleft, *topright; |
| int xclipl, xclipr, yclipt, yclipb; |
| int logo_x1, logo_x2, logo_y1, logo_y2; |
| |
| 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); |
| |
| logo_x1 = logo_x + xclipl; |
| logo_x2 = logo_x + logo_w - xclipr; |
| logo_y1 = logo_y + yclipt; |
| logo_y2 = logo_y + logo_h - yclipb; |
| |
| topleft = src+logo_y1*srcStride+logo_x1; |
| topright = src+logo_y1*srcStride+logo_x2-1; |
| botleft = src+(logo_y2-1)*srcStride+logo_x1; |
| |
| if (!direct) memcpy_pic(dst, src, width, height, dstStride, srcStride); |
| |
| dst += (logo_y1+1)*dstStride; |
| src += (logo_y1+1)*srcStride; |
| |
| for(y = logo_y1+1; y < logo_y2-1; y++) |
| { |
| for (x = logo_x1+1, xdst = dst+logo_x1+1, xsrc = src+logo_x1+1; x < logo_x2-1; x++, xdst++, xsrc++) { |
| 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-1)) *xdst = 0; |
| } |
| } |
| |
| dst+= dstStride; |
| src+= srcStride; |
| } |
| } |
| |
| static int config(struct vf_instance *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 *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 *vf, mp_image_t *mpi, double pts){ |
| 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, |
| mpi->flags&MP_IMGFLAG_DIRECT); |
| 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, |
| mpi->flags&MP_IMGFLAG_DIRECT); |
| 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, |
| mpi->flags&MP_IMGFLAG_DIRECT); |
| |
| vf_clone_mpi_attributes(dmpi, mpi); |
| |
| return vf_next_put_image(vf,dmpi, pts); |
| } |
| |
| static void uninit(struct vf_instance *vf){ |
| if(!vf->priv) return; |
| |
| free(vf->priv); |
| vf->priv=NULL; |
| } |
| |
| //===========================================================================// |
| |
| static int query_format(struct vf_instance *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 const unsigned int fmt_list[]={ |
| IMGFMT_YV12, |
| IMGFMT_I420, |
| IMGFMT_IYUV, |
| 0 |
| }; |
| |
| static int vf_open(vf_instance_t *vf, char *args){ |
| int res=0; |
| 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_V, "delogo: %d x %d, %d x %d, band = %d\n", |
| vf->priv->xoff, vf->priv->yoff, |
| vf->priv->lw, vf->priv->lh, |
| vf->priv->band); |
| |
| vf->priv->show = 0; |
| |
| if (vf->priv->band < 0) { |
| vf->priv->band = 4; |
| 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; |
| } |
| |
| const vf_info_t vf_info_delogo = { |
| "simple logo remover", |
| "delogo", |
| "Jindrich Makovicka, Alex Beregszaszi", |
| "", |
| vf_open, |
| }; |
| |
| //===========================================================================// |
