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Code Issues Releases Wiki Activity

new mode for tfields filter -- shifts fields by a quarter-pixel so the 

output picture doesn't bob up and down :)


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@10010 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
rfelker 2003-04-28 02:53:50 +00:00
parent 13160582ec
commit 452d5b8eb1
1 changed files with 51 additions and 0 deletions
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51
libmpcodecs/vf_tfields.c
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@ -56,6 +56,29 @@ static void deint(unsigned char *dest, int ds, unsigned char *src, int ss, int w
}
}
static void qpelup(unsigned char *d, unsigned char *s, int w, int h, int ds, int ss)
{
int i, j;
memcpy(d, s, w);
for (i=h-1; i; i--) {
d += ds;
s += ss;
for (j=0; j<w; j++)
d[j] = (s[j-ss] + 3*s[j])>>2;
}
}
static void qpeldown(unsigned char *d, unsigned char *s, int w, int h, int ds, int ss)
{
int i, j;
for (i=h-1; i; i--) {
for (j=0; j<w; j++)
d[j] = (3*s[j] + s[j+ss])>>2;
d += ds;
s += ss;
}
memcpy(d, s, w);
}
static int put_image(struct vf_instance_s* vf, mp_image_t *mpi)
@ -128,6 +151,33 @@ static int put_image(struct vf_instance_s* vf, mp_image_t *mpi)
mpi->chroma_width, mpi->chroma_height, 1);
}
return vf_next_put_image(vf, dmpi) || ret;
case 2:
dmpi = vf_get_image(vf->next, mpi->imgfmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
mpi->width, mpi->height/2);
qpeldown(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h/2,
dmpi->stride[0], mpi->stride[0]*2);
if (mpi->flags & MP_IMGFLAG_PLANAR) {
qpeldown(dmpi->planes[1], mpi->planes[1],
mpi->chroma_width, mpi->chroma_height/2,
dmpi->stride[1], mpi->stride[1]*2);
qpeldown(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);
qpelup(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) {
qpelup(dmpi->planes[1], mpi->planes[1] + mpi->stride[1],
mpi->chroma_width, mpi->chroma_height/2,
dmpi->stride[1], mpi->stride[1]*2);
qpelup(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;
}
return 0;
}
@ -150,6 +200,7 @@ static int config(struct vf_instance_s* vf,
{
switch (vf->priv->mode) {
case 0:
case 2:
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);