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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#include "mp_msg.h"
#include "help_mp.h"
#include "options.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "m_option.h"
#include "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) && !IMGFMT_IS_BGR(outfmt)){
switch(outfmt){
case IMGFMT_444P:
case IMGFMT_Y800:
case IMGFMT_Y8:
break;
case IMGFMT_YVU9:
case IMGFMT_IF09:
vf->priv->crop_y&=~3;
case IMGFMT_411P:
vf->priv->crop_x&=~3;
break;
case IMGFMT_YV12:
case IMGFMT_I420:
case IMGFMT_IYUV:
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 int put_image(struct vf_instance* vf, mp_image_t *mpi, double pts){
mp_image_t *dmpi;
if (mpi->flags&MP_IMGFLAG_DRAW_CALLBACK)
return vf_next_put_image(vf,vf->dmpi, pts);
dmpi=vf_get_image(vf->next,mpi->imgfmt,
MP_IMGTYPE_EXPORT, 0,
vf->priv->crop_w, vf->priv->crop_h);
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);
dmpi->planes[1]=mpi->planes[1]; // passthrough rgb8 palette
}
dmpi->stride[0]=mpi->stride[0];
dmpi->width=mpi->width;
return vf_next_put_image(vf,dmpi, pts);
}
static void start_slice(struct vf_instance* vf, mp_image_t *mpi){
vf->dmpi = vf_get_image(vf->next, mpi->imgfmt, mpi->type, mpi->flags,
vf->priv->crop_w, vf->priv->crop_h);
}
static void draw_slice(struct vf_instance* vf,
unsigned char** src, int* stride, int w,int h, int x, int y){
unsigned char *src2[3];
src2[0] = src[0];
if (vf->dmpi->flags & MP_IMGFLAG_PLANAR) {
src2[1] = src[1];
src2[2] = src[2];
}
//mp_msg(MSGT_VFILTER, MSGL_V, "crop slice %d %d %d %d ->", w,h,x,y);
if ((x -= vf->priv->crop_x) < 0) {
x = -x;
src2[0] += x;
if (vf->dmpi->flags & MP_IMGFLAG_PLANAR) {
src2[1] += x>>vf->dmpi->chroma_x_shift;
src2[2] += x>>vf->dmpi->chroma_x_shift;
}
w -= x;
x = 0;
}
if ((y -= vf->priv->crop_y) < 0) {
y = -y;
src2[0] += y*stride[0];
if (vf->dmpi->flags & MP_IMGFLAG_PLANAR) {
src2[1] += (y>>vf->dmpi->chroma_y_shift)*stride[1];
src2[2] += (y>>vf->dmpi->chroma_y_shift)*stride[2];
}
h -= y;
y = 0;
}
if (x+w > vf->priv->crop_w) w = vf->priv->crop_w-x;
if (y+h > vf->priv->crop_h) h = vf->priv->crop_h-y;
//mp_msg(MSGT_VFILTER, MSGL_V, "%d %d %d %d\n", w,h,x,y);
if ((w < 0) || (h < 0)) return;
vf_next_draw_slice(vf,src2,stride,w,h,x,y);
}
//===========================================================================//
static int open(vf_instance_t *vf, char* args){
vf->config=config;
vf->put_image=put_image;
vf->start_slice=start_slice;
vf->draw_slice=draw_slice;
vf->default_reqs=VFCAP_ACCEPT_STRIDE;
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",
"",
open,
&vf_opts
};
//===========================================================================//
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