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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include "../config.h"
#include "../mp_msg.h"
#include "../cpudetect.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "../libvo/fastmemcpy.h"
#include "../postproc/rgb2rgb.h"
struct vf_priv_s {
int skipline;
int scalew;
int scaleh;
};
static void toright(unsigned char *dst[3], unsigned char *src[3],
unsigned int dststride[3], unsigned int srcstride[3],
int w, int h, struct vf_priv_s* p)
{
int k;
for (k = 0; k < 3; k++) {
unsigned char* fromL = src[k];
unsigned char* fromR = src[k];
unsigned char* to = dst[k];
unsigned int src = srcstride[k];
unsigned int dst = dststride[k];
unsigned int ss;
unsigned int dd;
int i;
if (k > 0) {
i = h / 4 - p->skipline / 2;
ss = src * (h / 4 + p->skipline / 2);
dd = w / 4;
} else {
i = h / 2 - p->skipline;
ss = src * (h / 2 + p->skipline);
dd = w / 2;
}
fromR += ss;
for ( ; i > 0; i--) {
int j;
unsigned char* t = to;
unsigned char* sL = fromL;
unsigned char* sR = fromR;
if (p->scalew == 1) {
for (j = dd; j > 0; j--)
*t++ = (*sL++ + *sL++) / 2;
for (j = dd ; j > 0; j--)
*t++ = (*sR++ + *sR++) / 2;
} else {
for (j = dd * 2 ; j > 0; j--)
*t++ = *sL++;
for (j = dd * 2 ; j > 0; j--)
*t++ = *sR++;
}
if (p->scaleh == 1) {
memcpy(to + dst, to, dst);
to += dst;
}
to += dst;
fromL += src;
fromR += src;
}
//printf("K %d %d %d %d %d \n", k, w, h, src, dst);
}
}
static int put_image(struct vf_instance_s* vf, mp_image_t *mpi)
{
mp_image_t *dmpi;
// hope we'll get DR buffer:
dmpi=vf_get_image(vf->next, IMGFMT_YV12,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
mpi->w * vf->priv->scalew,
mpi->h / vf->priv->scaleh - vf->priv->skipline);
toright(dmpi->planes, mpi->planes, dmpi->stride,
mpi->stride, mpi->w, mpi->h, vf->priv);
return vf_next_put_image(vf,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)
{
/* FIXME - also support UYVY output? */
return vf_next_config(vf, width * vf->priv->scalew,
height / vf->priv->scaleh - vf->priv->skipline, d_width, d_height, flags, IMGFMT_YV12);
}
static int query_format(struct vf_instance_s* vf, unsigned int fmt)
{
/* FIXME - really any YUV 4:2:0 input format should work */
switch (fmt) {
case IMGFMT_YV12:
case IMGFMT_IYUV:
case IMGFMT_I420:
return vf_next_query_format(vf, IMGFMT_YV12);
}
return 0;
}
static void uninit(struct vf_instance_s* vf)
{
free(vf->priv);
}
static int open(vf_instance_t *vf, char* args)
{
vf->config=config;
vf->query_format=query_format;
vf->put_image=put_image;
vf->uninit=uninit;
vf->priv = calloc(1, sizeof (struct vf_priv_s));
vf->priv->skipline = 0;
vf->priv->scalew = 1;
vf->priv->scaleh = 2;
if (args) sscanf(args, "%d", &vf->priv->skipline);
return 1;
}
vf_info_t vf_info_down3dright = {
"convert stereo movie from top-bottom to left-right field",
"down3dright",
"Zdenek Kabelac",
"",
open,
NULL
};
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