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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../config.h"
#include "../mp_msg.h"
#include "mp_image.h"
#include "vf.h"
#include "../libvo/fastmemcpy.h"
struct vf_priv_s {
int exp_w,exp_h;
int exp_x,exp_y;
mp_image_t *dmpi;
};
//===========================================================================//
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;
// calculate the missing parameters:
if(vf->priv->exp_w<width) vf->priv->exp_w=width;
if(vf->priv->exp_h<height) vf->priv->exp_h=height;
if(vf->priv->exp_x<0) vf->priv->exp_x=(vf->priv->exp_w-width)/2;
if(vf->priv->exp_y<0) vf->priv->exp_y=(vf->priv->exp_h-height)/2;
// check:
// if(vf->priv->exp_w+vf->priv->exp_x>width) return 0; // bad width
// if(vf->priv->exp_h+vf->priv->exp_y>height) return 0; // bad height
ret=vf_next_config(vf,vf->priv->exp_w,vf->priv->exp_h,d_width,d_height,flags,outfmt);
return ret;
}
// there are 4 cases:
// codec --DR--> expand --DR--> vo
// codec --DR--> expand -copy-> vo
// codec -copy-> expand --DR--> vo
// codec -copy-> expand -copy-> vo (worst case)
static void get_image(struct vf_instance_s* vf, mp_image_t *mpi){
if(vf->priv->exp_w==mpi->width ||
(mpi->flags&(MP_IMGFLAG_ACCEPT_STRIDE|MP_IMGFLAG_ACCEPT_WIDTH)) ){
// try full DR !
vf->priv->dmpi=vf_get_image(vf->next,mpi->imgfmt,
mpi->type, mpi->flags, vf->priv->exp_w, vf->priv->exp_h);
// set up mpi as a cropped-down image of dmpi:
if(mpi->flags&MP_IMGFLAG_PLANAR){
mpi->planes[0]=vf->priv->dmpi->planes[0]+
vf->priv->exp_y*vf->priv->dmpi->stride[0]+vf->priv->exp_x;
mpi->planes[1]=vf->priv->dmpi->planes[1]+
(vf->priv->exp_y>>1)*vf->priv->dmpi->stride[1]+(vf->priv->exp_x>>1);
mpi->planes[2]=vf->priv->dmpi->planes[2]+
(vf->priv->exp_y>>1)*vf->priv->dmpi->stride[2]+(vf->priv->exp_x>>1);
mpi->stride[1]=vf->priv->dmpi->stride[1];
mpi->stride[2]=vf->priv->dmpi->stride[2];
} else {
mpi->planes[0]=vf->priv->dmpi->planes[0]+
vf->priv->exp_y*vf->priv->dmpi->stride[0]+
vf->priv->exp_x*(vf->priv->dmpi->bpp/8);
}
mpi->stride[0]=vf->priv->dmpi->stride[0];
mpi->width=vf->priv->dmpi->width;
mpi->flags|=MP_IMGFLAG_DIRECT;
}
}
static void put_image(struct vf_instance_s* vf, mp_image_t *mpi){
if(mpi->flags&MP_IMGFLAG_DIRECT){
vf_next_put_image(vf,vf->priv->dmpi);
return; // we've used DR, so we're ready...
}
// hope we'll get DR buffer:
vf->priv->dmpi=vf_get_image(vf->next,mpi->imgfmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
vf->priv->exp_w, vf->priv->exp_h);
// copy mpi->dmpi...
if(mpi->flags&MP_IMGFLAG_PLANAR){
memcpy_pic(vf->priv->dmpi->planes[0]+
vf->priv->exp_y*vf->priv->dmpi->stride[0]+vf->priv->exp_x,
mpi->planes[0], mpi->w, mpi->h,
vf->priv->dmpi->stride[0],mpi->stride[0]);
memcpy_pic(vf->priv->dmpi->planes[1]+
(vf->priv->exp_y>>1)*vf->priv->dmpi->stride[1]+(vf->priv->exp_x>>1),
mpi->planes[1], mpi->w>>1, mpi->h>>1,
vf->priv->dmpi->stride[1],mpi->stride[1]);
memcpy_pic(vf->priv->dmpi->planes[2]+
(vf->priv->exp_y>>1)*vf->priv->dmpi->stride[2]+(vf->priv->exp_x>>1),
mpi->planes[2], mpi->w>>1, mpi->h>>1,
vf->priv->dmpi->stride[2],mpi->stride[2]);
} else {
memcpy_pic(vf->priv->dmpi->planes[0]+
vf->priv->exp_y*vf->priv->dmpi->stride[0]+vf->priv->exp_x*(vf->priv->dmpi->bpp/8),
mpi->planes[0], mpi->w*(vf->priv->dmpi->bpp/8), mpi->h,
vf->priv->dmpi->stride[0],mpi->stride[0]);
}
vf_next_put_image(vf,vf->priv->dmpi);
}
//===========================================================================//
static int open(vf_instance_t *vf, char* args){
vf->config=config;
vf->get_image=get_image;
vf->put_image=put_image;
vf->priv=malloc(sizeof(struct vf_priv_s));
// TODO: parse args ->
vf->priv->exp_x=
vf->priv->exp_y=
vf->priv->exp_w=
vf->priv->exp_h=-1;
if(args) sscanf(args, "%d:%d:%d:%d",
&vf->priv->exp_w,
&vf->priv->exp_h,
&vf->priv->exp_x,
&vf->priv->exp_y);
printf("Expand: %d x %d, %d ; %d\n",
vf->priv->exp_w,
vf->priv->exp_h,
vf->priv->exp_x,
vf->priv->exp_y);
return 1;
}
vf_info_t vf_info_expand = {
"expanding",
"expand",
"A'rpi",
"",
open
};
//===========================================================================//
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