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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)
{
// 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:
struct mp_imgfmt_desc fmt = mp_imgfmt_get_desc(outfmt);
vf->priv->crop_x = MP_ALIGN_DOWN(vf->priv->crop_x, fmt.align_x);
vf->priv->crop_y = MP_ALIGN_DOWN(vf->priv->crop_y, fmt.align_y);
// 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;
}
vf_rescale_dsize(&d_width, &d_height, width, height,
vf->priv->crop_w, vf->priv->crop_h);
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_crop(mpi, vf->priv->crop_x, vf->priv->crop_y,
vf->priv->crop_x + vf->priv->crop_w,
vf->priv->crop_y + vf->priv->crop_h);
return mpi;
}
static int query_format(struct vf_instance *vf, unsigned int fmt)
{
if (!IMGFMT_IS_HWACCEL(fmt))
return vf_next_query_format(vf, fmt);
return 0;
}
static int vf_open(vf_instance_t *vf, char *args){
vf->config=config;
vf->filter=filter;
vf->query_format=query_format;
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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