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#include <stdio.h>
#include <stdlib.h>
#include "mp_image.h"
#include "vf.h"
struct vf_priv_s {
int x, y, w, h;
};
static void
put_image(struct vf_instance_s* vf, mp_image_t* mpi){
mp_image_t* dmpi;
int x, y, w, h;
unsigned int bpp, count;
unsigned char *p1, *p2;
dmpi = vf_get_image(vf->next, mpi->imgfmt, MP_IMGTYPE_TEMP, 0, mpi->w, mpi->h);
bpp = dmpi->bpp / 8;
memcpy(dmpi->planes[0], mpi->planes[0], dmpi->stride[0] * bpp * mpi->height);
memcpy(dmpi->planes[1], mpi->planes[1], dmpi->stride[1] * mpi->chroma_height);
memcpy(dmpi->planes[2], mpi->planes[2], dmpi->stride[2] * mpi->chroma_height);
/* Draw the rectangle */
x = vf->priv->x;
if (x < 0)
x = 0;
y = vf->priv->y;
if (y < 0)
y = 0;
w = vf->priv->w;
if (w < 0)
w = dmpi->w - x;
h = vf->priv->h;
if (h < 0)
h = dmpi->h - y;
count = w * bpp;
p1 = dmpi->planes[0] + y * dmpi->stride[0] + x * bpp;
if (h == 1)
while (count--) {
*p1 = 0xff - *p1;
++p1;
}
else {
p2 = p1 + (h - 1) * dmpi->stride[0];
while (count--) {
*p1 = 0xff - *p1;
++p1;
*p2 = 0xff - *p2;
++p2;
}
}
count = h;
p1 = dmpi->planes[0] + y * dmpi->stride[0] + x * bpp;
if (w == 1)
while (count--) {
int i = bpp;
while (i--)
p1[i] ^= 0xff;
p1 += dmpi->stride[0];
}
else {
p2 = p1 + (w - 1) * bpp;
while (count--) {
int i = bpp;
while (i--) {
p1[i] = 0xff - p1[i];
p2[i] = 0xff - p2[i];
}
p1 += dmpi->stride[0];
p2 += dmpi->stride[0];
}
}
vf_next_put_image(vf, dmpi);
}
static int
open(vf_instance_t* vf, char* args) {
vf->put_image = put_image;
vf->priv = malloc(sizeof(struct vf_priv_s));
vf->priv->x = -1;
vf->priv->y = -1;
vf->priv->w = -1;
vf->priv->h = -1;
if (args)
sscanf(args, "%d:%d:%d:%d",
&vf->priv->w, &vf->priv->h, &vf->priv->x, &vf->priv->y);
printf("Crop: %d x %d, %d ; %d\n",
vf->priv->w, vf->priv->h, vf->priv->x, vf->priv->y);
return 1;
}
vf_info_t vf_info_rectangle = {
"draw rectangle",
"rectangle",
"Kim Minh Kaplan",
"",
open
};
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