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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 "config.h"
#include "core/mp_msg.h"
#include "core/options.h"
#include "video/img_format.h"
#include "video/mp_image.h"
#include "vf.h"
#include "core/m_option.h"
#include "core/m_struct.h"
static const struct vf_priv_s {
int crop_w,crop_h;
int crop_x,crop_y;
} vf_priv_dflt = {
-1,-1,
-1,-1
};
//===========================================================================//
static int config(struct vf_instance *vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt){
struct MPOpts *opts = vf->opts;
// calculate the missing parameters:
if(vf->priv->crop_w<=0 || vf->priv->crop_w>width) vf->priv->crop_w=width;
if(vf->priv->crop_h<=0 || vf->priv->crop_h>height) vf->priv->crop_h=height;
if(vf->priv->crop_x<0) vf->priv->crop_x=(width-vf->priv->crop_w)/2;
if(vf->priv->crop_y<0) vf->priv->crop_y=(height-vf->priv->crop_h)/2;
// rounding:
if(!IMGFMT_IS_RGB(outfmt)){
switch(outfmt){
case IMGFMT_444P:
case IMGFMT_Y8:
break;
case IMGFMT_410P:
vf->priv->crop_y&=~3;
case IMGFMT_411P:
vf->priv->crop_x&=~3;
break;
case IMGFMT_420P:
vf->priv->crop_y&=~1;
default:
vf->priv->crop_x&=~1;
}
}
// check:
if(vf->priv->crop_w+vf->priv->crop_x>width ||
vf->priv->crop_h+vf->priv->crop_y>height){
mp_tmsg(MSGT_VFILTER, MSGL_WARN, "[CROP] Bad position/width/height - cropped area outside of the original!\n");
return 0;
}
if(!opts->screen_size_x && !opts->screen_size_y){
d_width=d_width*vf->priv->crop_w/width;
d_height=d_height*vf->priv->crop_h/height;
}
return vf_next_config(vf,vf->priv->crop_w,vf->priv->crop_h,d_width,d_height,flags,outfmt);
}
static struct mp_image *filter(struct vf_instance *vf, struct mp_image *mpi)
{
mp_image_t *dmpi = mpi;
if(mpi->flags&MP_IMGFLAG_PLANAR){
dmpi->planes[0]=mpi->planes[0]+
vf->priv->crop_y*mpi->stride[0]+vf->priv->crop_x;
dmpi->planes[1]=mpi->planes[1]+
(vf->priv->crop_y>>mpi->chroma_y_shift)*mpi->stride[1]+(vf->priv->crop_x>>mpi->chroma_x_shift);
dmpi->planes[2]=mpi->planes[2]+
(vf->priv->crop_y>>mpi->chroma_y_shift)*mpi->stride[2]+(vf->priv->crop_x>>mpi->chroma_x_shift);
dmpi->stride[1]=mpi->stride[1];
dmpi->stride[2]=mpi->stride[2];
} else {
dmpi->planes[0]=mpi->planes[0]+
vf->priv->crop_y*mpi->stride[0]+
vf->priv->crop_x*(mpi->bpp/8);
}
mp_image_set_size(dmpi, vf->priv->crop_w, vf->priv->crop_h);
return mpi;
}
//===========================================================================//
static int vf_open(vf_instance_t *vf, char *args){
vf->config=config;
vf->filter=filter;
mp_msg(MSGT_VFILTER, MSGL_INFO, "Crop: %d x %d, %d ; %d\n",
vf->priv->crop_w,
vf->priv->crop_h,
vf->priv->crop_x,
vf->priv->crop_y);
return 1;
}
#define ST_OFF(f) M_ST_OFF(struct vf_priv_s,f)
static const m_option_t vf_opts_fields[] = {
{"w", ST_OFF(crop_w), CONF_TYPE_INT, M_OPT_MIN,0 ,0, NULL},
{"h", ST_OFF(crop_h), CONF_TYPE_INT, M_OPT_MIN,0 ,0, NULL},
{"x", ST_OFF(crop_x), CONF_TYPE_INT, M_OPT_MIN,-1 ,0, NULL},
{"y", ST_OFF(crop_y), CONF_TYPE_INT, M_OPT_MIN,-1 ,0, NULL},
{ NULL, NULL, 0, 0, 0, 0, NULL }
};
static const m_struct_t vf_opts = {
"crop",
sizeof(struct vf_priv_s),
&vf_priv_dflt,
vf_opts_fields
};
const vf_info_t vf_info_crop = {
"cropping",
"crop",
"A'rpi",
"",
vf_open,
&vf_opts
};
//===========================================================================//
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