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/*
* 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include "config.h"
#include "core/mp_msg.h"
#include "video/img_format.h"
#include "video/mp_image.h"
#include "vf.h"
static void mirror(unsigned char* dst,unsigned char* src,int dststride,int srcstride,int w,int h,int bpp,unsigned int fmt){
int y;
for(y=0;y<h;y++){
int x;
switch(bpp){
case 1:
for(x=0;x<w;x++) dst[x]=src[w-x-1];
break;
case 2:
switch(fmt){
case IMGFMT_UYVY: {
// packed YUV is tricky. U,V are 32bpp while Y is 16bpp:
int w2=w>>1;
for(x=0;x<w2;x++){
// TODO: optimize this...
dst[x*4+0]=src[0+(w2-x-1)*4];
dst[x*4+1]=src[3+(w2-x-1)*4];
dst[x*4+2]=src[2+(w2-x-1)*4];
dst[x*4+3]=src[1+(w2-x-1)*4];
}
break; }
case IMGFMT_YUYV: {
// packed YUV is tricky. U,V are 32bpp while Y is 16bpp:
int w2=w>>1;
for(x=0;x<w2;x++){
// TODO: optimize this...
dst[x*4+0]=src[2+(w2-x-1)*4];
dst[x*4+1]=src[1+(w2-x-1)*4];
dst[x*4+2]=src[0+(w2-x-1)*4];
dst[x*4+3]=src[3+(w2-x-1)*4];
}
break; }
default:
for(x=0;x<w;x++) *((short*)(dst+x*2))=*((short*)(src+(w-x-1)*2));
}
break;
case 3:
for(x=0;x<w;x++){
dst[x*3+0]=src[0+(w-x-1)*3];
dst[x*3+1]=src[1+(w-x-1)*3];
dst[x*3+2]=src[2+(w-x-1)*3];
}
break;
case 4:
for(x=0;x<w;x++) *((int*)(dst+x*4))=*((int*)(src+(w-x-1)*4));
}
src+=srcstride;
dst+=dststride;
}
}
//===========================================================================//
static struct mp_image *filter(struct vf_instance *vf, struct mp_image *mpi)
{
mp_image_t *dmpi = vf_alloc_out_image(vf);
mp_image_copy_attributes(dmpi, mpi);
if(mpi->flags&MP_IMGFLAG_PLANAR){
mirror(dmpi->planes[0],mpi->planes[0],
dmpi->stride[0],mpi->stride[0],
dmpi->w,dmpi->h,1,mpi->imgfmt);
mirror(dmpi->planes[1],mpi->planes[1],
dmpi->stride[1],mpi->stride[1],
dmpi->w>>mpi->chroma_x_shift,dmpi->h>>mpi->chroma_y_shift,1,mpi->imgfmt);
mirror(dmpi->planes[2],mpi->planes[2],
dmpi->stride[2],mpi->stride[2],
dmpi->w>>mpi->chroma_x_shift,dmpi->h>>mpi->chroma_y_shift,1,mpi->imgfmt);
} else {
mirror(dmpi->planes[0],mpi->planes[0],
dmpi->stride[0],mpi->stride[0],
dmpi->w,dmpi->h,dmpi->bpp>>3,mpi->imgfmt);
}
talloc_free(mpi);
return dmpi;
}
//===========================================================================//
static int vf_open(vf_instance_t *vf, char *args){
//vf->config=config;
vf->filter=filter;
return 1;
}
const vf_info_t vf_info_mirror = {
"horizontal mirror",
"mirror",
"Eyck",
"",
vf_open,
NULL
};
//===========================================================================//
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