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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mp_image.h"
#include "mp_msg.h"
#include "vf.h"
#include "libvo/fastmemcpy.h"
#include "libavutil/common.h"
struct vf_priv_s {
int x, y, w, h;
};
static int
config(struct vf_instance_s* vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt)
{
if (vf->priv->w < 0 || width < vf->priv->w)
vf->priv->w = width;
if (vf->priv->h < 0 || height < vf->priv->h)
vf->priv->h = height;
if (vf->priv->x < 0)
vf->priv->x = (width - vf->priv->w) / 2;
if (vf->priv->y < 0)
vf->priv->y = (height - vf->priv->h) / 2;
if (vf->priv->w + vf->priv->x > width
|| vf->priv->h + vf->priv->y > height) {
mp_msg(MSGT_VFILTER,MSGL_WARN,"rectangle: bad position/width/height - rectangle area is out of the original!\n");
return 0;
}
return vf_next_config(vf, width, height, d_width, d_height, flags, outfmt);
}
static int
control(struct vf_instance_s* vf, int request, void *data)
{
const int *const tmp = data;
switch(request){
case VFCTRL_CHANGE_RECTANGLE:
switch (tmp[0]){
case 0:
vf->priv->w += tmp[1];
return 1;
break;
case 1:
vf->priv->h += tmp[1];
return 1;
break;
case 2:
vf->priv->x += tmp[1];
return 1;
break;
case 3:
vf->priv->y += tmp[1];
return 1;
break;
default:
mp_msg(MSGT_VFILTER,MSGL_FATAL,"Unknown param %d \n", tmp[0]);
return 0;
}
}
return vf_next_control(vf, request, data);
return 0;
}
static int
put_image(struct vf_instance_s* vf, mp_image_t* mpi, double pts){
mp_image_t* dmpi;
unsigned int bpp = mpi->bpp / 8;
int x, y, w, h;
dmpi = vf_get_image(vf->next, mpi->imgfmt, MP_IMGTYPE_TEMP,
MP_IMGFLAG_ACCEPT_STRIDE | MP_IMGFLAG_PREFER_ALIGNED_STRIDE,
mpi->w, mpi->h);
memcpy_pic(dmpi->planes[0],mpi->planes[0],mpi->w*bpp, mpi->h,
dmpi->stride[0],mpi->stride[0]);
if(mpi->flags&MP_IMGFLAG_PLANAR && mpi->flags&MP_IMGFLAG_YUV){
memcpy_pic(dmpi->planes[1],mpi->planes[1],
mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift,
dmpi->stride[1],mpi->stride[1]);
memcpy_pic(dmpi->planes[2],mpi->planes[2],
mpi->w>>mpi->chroma_x_shift, mpi->h>>mpi->chroma_y_shift,
dmpi->stride[2],mpi->stride[2]);
}
/* Draw the rectangle */
mp_msg(MSGT_VFILTER,MSGL_INFO, "rectangle: -vf rectangle=%d:%d:%d:%d \n", vf->priv->w, vf->priv->h, vf->priv->x, vf->priv->y);
x = FFMIN(vf->priv->x, dmpi->width);
x = FFMAX(x, 0);
w = vf->priv->x + vf->priv->w - 1 - x;
w = FFMIN(w, dmpi->width - x);
w = FFMAX(w, 0);
y = FFMIN(vf->priv->y, dmpi->height);
y = FFMAX(y, 0);
h = vf->priv->y + vf->priv->h - 1 - y;
h = FFMIN(h, dmpi->height - y);
h = FFMAX(h, 0);
if (0 <= vf->priv->y && vf->priv->y <= dmpi->height) {
unsigned char *p = dmpi->planes[0] + y * dmpi->stride[0] + x * bpp;
unsigned int count = w * bpp;
while (count--)
p[count] = 0xff - p[count];
}
if (h != 1 && vf->priv->y + vf->priv->h - 1 <= mpi->height) {
unsigned char *p = dmpi->planes[0] + (vf->priv->y + vf->priv->h - 1) * dmpi->stride[0] + x * bpp;
unsigned int count = w * bpp;
while (count--)
p[count] = 0xff - p[count];
}
if (0 <= vf->priv->x && vf->priv->x <= dmpi->width) {
unsigned char *p = dmpi->planes[0] + y * dmpi->stride[0] + x * bpp;
unsigned int count = h;
while (count--) {
unsigned int i = bpp;
while (i--)
p[i] = 0xff - p[i];
p += dmpi->stride[0];
}
}
if (w != 1 && vf->priv->x + vf->priv->w - 1 <= mpi->width) {
unsigned char *p = dmpi->planes[0] + y * dmpi->stride[0] + (vf->priv->x + vf->priv->w - 1) * bpp;
unsigned int count = h;
while (count--) {
unsigned int i = bpp;
while (i--)
p[i] = 0xff - p[i];
p += dmpi->stride[0];
}
}
return vf_next_put_image(vf, dmpi, pts);
}
static int
open(vf_instance_t* vf, char* args) {
vf->config = config;
vf->control = control;
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);
return 1;
}
const vf_info_t vf_info_rectangle = {
"draw rectangle",
"rectangle",
"Kim Minh Kaplan",
"",
open,
NULL
};
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