mpv/libmpcodecs/vf_tfields.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../config.h"
#include "../mp_msg.h"
#include "img_format.h"
#include "mp_image.h"
#include "vf.h"
#include "../libvo/fastmemcpy.h"
struct vf_priv_s {
int mode;
};
static inline void *my_memcpy_pic(void * dst, void * src, int bytesPerLine, int height, int dstStride, int srcStride)
{
int i;
void *retval=dst;
for(i=0; i<height; i++)
{
memcpy(dst, src, bytesPerLine);
src+= srcStride;
dst+= dstStride;
}
return retval;
}
static void deint(unsigned char *dest, int ds, unsigned char *src, int ss, int w, int h, int field)
{
int x, y;
src += ss;
dest += ds;
if (field) {
src += ss;
dest += ds;
h -= 2;
}
for (y=h/2; y; y--) {
for (x=0; x<w; x++) {
if (((src[x-ss] < src[x]) && (src[x+ss] < src[x])) ||
((src[x-ss] > src[x]) && (src[x+ss] > src[x]))) {
//dest[x] = (src[x+ss] + src[x-ss])>>1;
dest[x] = ((src[x+ss]<<1) + (src[x-ss]<<1)
+ src[x+ss+1] + src[x-ss+1]
+ src[x+ss-1] + src[x-ss-1])>>3;
}
else dest[x] = src[x];
}
dest += ds<<1;
src += ss<<1;
}
}
static int put_image(struct vf_instance_s* vf, mp_image_t *mpi)
{
int ret;
mp_image_t *dmpi;
switch (vf->priv->mode) {
case 0:
dmpi = vf_get_image(vf->next, mpi->imgfmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
mpi->width, mpi->height/2);
memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h/2,
dmpi->stride[0], mpi->stride[0]*2);
if (mpi->flags & MP_IMGFLAG_PLANAR) {
memcpy_pic(dmpi->planes[1], mpi->planes[1],
mpi->chroma_width, mpi->chroma_height/2,
dmpi->stride[1], mpi->stride[1]*2);
memcpy_pic(dmpi->planes[2], mpi->planes[2],
mpi->chroma_width, mpi->chroma_height/2,
dmpi->stride[2], mpi->stride[2]*2);
}
ret = vf_next_put_image(vf, dmpi);
memcpy_pic(dmpi->planes[0], mpi->planes[0] + mpi->stride[0],
mpi->w, mpi->h/2, dmpi->stride[0], mpi->stride[0]*2);
if (mpi->flags & MP_IMGFLAG_PLANAR) {
memcpy_pic(dmpi->planes[1], mpi->planes[1] + mpi->stride[1],
mpi->chroma_width, mpi->chroma_height/2,
dmpi->stride[1], mpi->stride[1]*2);
memcpy_pic(dmpi->planes[2], mpi->planes[2] + mpi->stride[2],
mpi->chroma_width, mpi->chroma_height/2,
dmpi->stride[2], mpi->stride[2]*2);
}
return vf_next_put_image(vf, dmpi) || ret;
case 1:
dmpi = vf_get_image(vf->next, mpi->imgfmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
mpi->width, mpi->height);
my_memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h/2,
dmpi->stride[0]*2, mpi->stride[0]*2);
deint(dmpi->planes[0], dmpi->stride[0], mpi->planes[0], mpi->stride[0], mpi->w, mpi->h, 0);
if (mpi->flags & MP_IMGFLAG_PLANAR) {
my_memcpy_pic(dmpi->planes[1], mpi->planes[1],
mpi->chroma_width, mpi->chroma_height/2,
dmpi->stride[1]*2, mpi->stride[1]*2);
my_memcpy_pic(dmpi->planes[2], mpi->planes[2],
mpi->chroma_width, mpi->chroma_height/2,
dmpi->stride[2]*2, mpi->stride[2]*2);
deint(dmpi->planes[1], dmpi->stride[1], mpi->planes[1], mpi->stride[1],
mpi->chroma_width, mpi->chroma_height, 0);
deint(dmpi->planes[2], dmpi->stride[2], mpi->planes[2], mpi->stride[2],
mpi->chroma_width, mpi->chroma_height, 0);
}
ret = vf_next_put_image(vf, dmpi);
my_memcpy_pic(dmpi->planes[0] + dmpi->stride[0], mpi->planes[0] + mpi->stride[0],
mpi->w, mpi->h/2, dmpi->stride[0]*2, mpi->stride[0]*2);
deint(dmpi->planes[0], dmpi->stride[0], mpi->planes[0], mpi->stride[0], mpi->w, mpi->h, 1);
if (mpi->flags & MP_IMGFLAG_PLANAR) {
my_memcpy_pic(dmpi->planes[1] + dmpi->stride[1], mpi->planes[1] + mpi->stride[1],
mpi->chroma_width, mpi->chroma_height/2,
dmpi->stride[1]*2, mpi->stride[1]*2);
my_memcpy_pic(dmpi->planes[2] + dmpi->stride[2], mpi->planes[2] + mpi->stride[2],
mpi->chroma_width, mpi->chroma_height/2,
dmpi->stride[2]*2, mpi->stride[2]*2);
deint(dmpi->planes[1], dmpi->stride[1], mpi->planes[1], mpi->stride[1],
mpi->chroma_width, mpi->chroma_height, 1);
deint(dmpi->planes[2], dmpi->stride[2], mpi->planes[2], mpi->stride[2],
mpi->chroma_width, mpi->chroma_height, 1);
}
return vf_next_put_image(vf, dmpi) || ret;
}
return 0;
}
static int query_format(struct vf_instance_s* vf, unsigned int fmt)
{
/* FIXME - figure out which other formats work */
switch (fmt) {
case IMGFMT_YV12:
case IMGFMT_IYUV:
case IMGFMT_I420:
return vf_next_query_format(vf, fmt);
}
return 0;
}
static int config(struct vf_instance_s* vf,
int width, int height, int d_width, int d_height,
unsigned int flags, unsigned int outfmt)
{
switch (vf->priv->mode) {
case 0:
return vf_next_config(vf,width,height/2,d_width,d_height,flags,outfmt);
case 1:
return vf_next_config(vf,width,height,d_width,d_height,flags,outfmt);
}
return 0;
}
static void uninit(struct vf_instance_s* vf)
{
free(vf->priv);
}
static int open(vf_instance_t *vf, char* args)
{
struct vf_priv_s *p;
vf->config = config;
vf->put_image = put_image;
vf->query_format = query_format;
vf->uninit = uninit;
vf->default_reqs = VFCAP_ACCEPT_STRIDE;
vf->priv = p = calloc(1, sizeof(struct vf_priv_s));
vf->priv->mode = 0;
if (args) sscanf(args, "%d", &vf->priv->mode);
return 1;
}
vf_info_t vf_info_tfields = {
"temporal field separation",
"tfields",
"Rich Felker",
"",
open,
NULL
};