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/*
Copyright (C) 2003 Michael Zucchi <notzed@ximian.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#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;
int frame;
mp_image_t *dmpi;
};
// Copied verbatim from vf_telecine.c:
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 int put_image(struct vf_instance_s* vf, mp_image_t *mpi, double pts)
{
int ret = 0;
mp_image_t *dmpi;
switch (vf->priv->mode) {
case 0:
dmpi = vf->priv->dmpi;
if (dmpi == NULL) {
dmpi = vf_get_image(vf->next, mpi->imgfmt,
MP_IMGTYPE_STATIC, MP_IMGFLAG_ACCEPT_STRIDE |
MP_IMGFLAG_PRESERVE,
mpi->width, mpi->height*2);
vf->priv->dmpi = dmpi;
memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h,
dmpi->stride[0]*2, mpi->stride[0]);
if (mpi->flags & MP_IMGFLAG_PLANAR) {
memcpy_pic(dmpi->planes[1], mpi->planes[1],
mpi->chroma_width, mpi->chroma_height,
dmpi->stride[1]*2, mpi->stride[1]);
memcpy_pic(dmpi->planes[2], mpi->planes[2],
mpi->chroma_width, mpi->chroma_height,
dmpi->stride[2]*2, mpi->stride[2]);
}
} else {
vf->priv->dmpi = NULL;
memcpy_pic(dmpi->planes[0]+dmpi->stride[0], mpi->planes[0], mpi->w, mpi->h,
dmpi->stride[0]*2, mpi->stride[0]);
if (mpi->flags & MP_IMGFLAG_PLANAR) {
memcpy_pic(dmpi->planes[1]+dmpi->stride[1], mpi->planes[1],
mpi->chroma_width, mpi->chroma_height,
dmpi->stride[1]*2, mpi->stride[1]);
memcpy_pic(dmpi->planes[2]+dmpi->stride[2], mpi->planes[2],
mpi->chroma_width, mpi->chroma_height,
dmpi->stride[2]*2, mpi->stride[2]);
}
ret = vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
}
break;
case 1:
if (vf->priv->frame & 1)
ret = vf_next_put_image(vf, mpi, MP_NOPTS_VALUE);
break;
case 2:
if ((vf->priv->frame & 1) == 0)
ret = vf_next_put_image(vf, mpi, MP_NOPTS_VALUE);
break;
case 3:
dmpi = vf_get_image(vf->next, mpi->imgfmt,
MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
mpi->width, mpi->height*2);
/* fixme, just clear alternate lines */
vf_mpi_clear(dmpi, 0, 0, dmpi->w, dmpi->h);
if ((vf->priv->frame & 1) == 0) {
memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h,
dmpi->stride[0]*2, mpi->stride[0]);
if (mpi->flags & MP_IMGFLAG_PLANAR) {
memcpy_pic(dmpi->planes[1], mpi->planes[1],
mpi->chroma_width, mpi->chroma_height,
dmpi->stride[1]*2, mpi->stride[1]);
memcpy_pic(dmpi->planes[2], mpi->planes[2],
mpi->chroma_width, mpi->chroma_height,
dmpi->stride[2]*2, mpi->stride[2]);
}
} else {
memcpy_pic(dmpi->planes[0]+dmpi->stride[0], mpi->planes[0], mpi->w, mpi->h,
dmpi->stride[0]*2, mpi->stride[0]);
if (mpi->flags & MP_IMGFLAG_PLANAR) {
memcpy_pic(dmpi->planes[1]+dmpi->stride[1], mpi->planes[1],
mpi->chroma_width, mpi->chroma_height,
dmpi->stride[1]*2, mpi->stride[1]);
memcpy_pic(dmpi->planes[2]+dmpi->stride[2], mpi->planes[2],
mpi->chroma_width, mpi->chroma_height,
dmpi->stride[2]*2, mpi->stride[2]);
}
}
ret = vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
break;
case 4:
// Interleave even lines (only) from Frame 'i' with odd
// lines (only) from Frame 'i+1', halving the Frame
// rate and preserving image height.
dmpi = vf->priv->dmpi;
// @@ Need help: Should I set dmpi->fields to indicate
// that the (new) frame will be interlaced!? E.g. ...
// dmpi->fields |= MP_IMGFIELD_INTERLACED;
// dmpi->fields |= MP_IMGFIELD_TOP_FIRST;
// etc.
if (dmpi == NULL) {
dmpi = vf_get_image(vf->next, mpi->imgfmt,
MP_IMGTYPE_STATIC, MP_IMGFLAG_ACCEPT_STRIDE |
MP_IMGFLAG_PRESERVE,
mpi->width, mpi->height);
vf->priv->dmpi = dmpi;
my_memcpy_pic(dmpi->planes[0], mpi->planes[0], mpi->w, mpi->h/2,
dmpi->stride[0]*2, mpi->stride[0]*2);
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);
}
} else {
vf->priv->dmpi = NULL;
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);
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);
}
ret = vf_next_put_image(vf, dmpi, MP_NOPTS_VALUE);
}
break;
}
vf->priv->frame++;
return ret;
}
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:
case 3:
return vf_next_config(vf,width,height*2,d_width,d_height*2,flags,outfmt);
case 1: /* odd frames */
case 2: /* even frames */
case 4: /* alternate frame (height-preserving) interlacing */
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);
vf->priv->frame = 0;
return 1;
}
vf_info_t vf_info_tinterlace = {
"temporal field interlacing",
"tinterlace",
"Michael Zucchi",
"",
open,
NULL
};
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