1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../config.h"
#include "../mp_msg.h"
#include "mp_image.h"
#include "vf.h"
struct vf_priv_s {
int crop_w,crop_h;
int crop_x,crop_y;
};
//===========================================================================//
static int config(struct vf_instance_s* vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt){
int ret;
printf("crop->config() called\n");
// 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;
// check:
if(vf->priv->crop_w+vf->priv->crop_x>width) return 0; // bad width
if(vf->priv->crop_h+vf->priv->crop_y>height) return 0; // bad height
ret=vf_next_config(vf,vf->priv->crop_w,vf->priv->crop_h,d_width,d_height,flags,outfmt);
printf("crop->config() return %d\n",ret);
return ret;
}
static void put_image(struct vf_instance_s* vf, mp_image_t *mpi){
mp_image_t *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>>1)*mpi->stride[1]+(vf->priv->crop_x>>1);
dmpi->planes[2]=mpi->planes[2]+
(vf->priv->crop_y>>1)*mpi->stride[2]+(vf->priv->crop_x>>1);
dmpi->stride[0]=mpi->stride[0];
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->stride[0]=mpi->stride[0];
}
vf_next_put_image(vf,dmpi);
}
//===========================================================================//
static int open(vf_instance_t *vf, char* args){
vf->config=config;
vf->put_image=put_image;
vf->default_reqs=VFCAP_ACCEPT_STRIDE;
vf->priv=malloc(sizeof(struct vf_priv_s));
// TODO: parse args ->
vf->priv->crop_x=
vf->priv->crop_y=
vf->priv->crop_w=
vf->priv->crop_h=-1;
if(args) sscanf(args, "%d:%d:%d:%d",
&vf->priv->crop_w,
&vf->priv->crop_h,
&vf->priv->crop_x,
&vf->priv->crop_y);
printf("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;
}
vf_info_t vf_info_crop = {
"cropping",
"crop",
"A'rpi",
"",
open
};
//===========================================================================//
|
