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/*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "config.h"
#include "common/msg.h"
#include "video/img_format.h"
#include "video/mp_image.h"
#include "vf.h"
#include "video/memcpy_pic.h"
struct vf_priv_s {
int state;
long long in;
long long out;
struct vf_detc_pts_buf ptsbuf;
int last_frame_duration;
struct mp_image *buffer;
};
static void copy_pic_field(struct mp_image *dmpi, struct mp_image *mpi, int f)
{
for (int p = 0; p < dmpi->num_planes; p++) {
my_memcpy_pic(dmpi->planes[p] + dmpi->stride[p] * f,
mpi->planes[p] + mpi->stride[p] * f,
mpi->plane_w[p], mpi->plane_h[p] / 2,
dmpi->stride[p] * 2, mpi->stride[p] * 2);
}
}
static int filter(struct vf_instance *vf, struct mp_image *mpi)
{
if (!mpi)
return 0;
int flags = mpi->fields;
int state = vf->priv->state;
struct vf_priv_s *p = vf->priv;
if (!p->buffer || p->buffer->w != mpi->w || p->buffer->h != mpi->h ||
p->buffer->imgfmt != mpi->imgfmt)
{
mp_image_unrefp(&p->buffer);
p->buffer = mp_image_alloc(mpi->imgfmt, mpi->w, mpi->h);
talloc_steal(vf, p->buffer);
if (!p->buffer)
goto failed; // OOM
}
mp_image_copy_attributes(p->buffer, mpi);
struct mp_image *dmpi = p->buffer;
vf->priv->in++;
if ((state == 0 &&
!(flags & MP_IMGFIELD_TOP_FIRST)) ||
(state == 1 &&
flags & MP_IMGFIELD_TOP_FIRST)) {
MP_WARN(vf, "softpulldown: Unexpected field flags: state=%d top_field_first=%d repeat_first_field=%d\n",
state,
(flags & MP_IMGFIELD_TOP_FIRST) != 0,
(flags & MP_IMGFIELD_REPEAT_FIRST) != 0);
state ^= 1;
}
if (state == 0) {
struct mp_image *new = mp_image_new_ref(mpi);
if (!new)
goto failed;
new->pts = vf_softpulldown_adjust_pts(&vf->priv->ptsbuf, mpi->pts, 0, 0, vf->priv->last_frame_duration);
vf_add_output_frame(vf, new);
vf->priv->out++;
if (flags & MP_IMGFIELD_REPEAT_FIRST) {
copy_pic_field(dmpi, mpi, 0);
state=1;
}
} else {
copy_pic_field(dmpi, mpi, 1);
struct mp_image *new = mp_image_new_ref(mpi);
if (!new)
goto failed;
new->pts = vf_softpulldown_adjust_pts(&vf->priv->ptsbuf, mpi->pts, 0, 0, vf->priv->last_frame_duration);
vf_add_output_frame(vf, new);
vf->priv->out++;
if (flags & MP_IMGFIELD_REPEAT_FIRST) {
struct mp_image *new2 = mp_image_new_ref(mpi);
if (new2) {
new2->pts = vf_softpulldown_adjust_pts(&vf->priv->ptsbuf, mpi->pts, 0, 0, 3);
vf_add_output_frame(vf, new2);
}
vf->priv->out++;
vf->priv->state=0;
} else {
copy_pic_field(dmpi, mpi, 0);
}
}
vf->priv->state = state;
if (flags & MP_IMGFIELD_REPEAT_FIRST)
vf->priv->last_frame_duration = 3;
else
vf->priv->last_frame_duration = 2;
talloc_free(mpi);
return 0;
failed:
talloc_free(mpi);
return -1;
}
static int control(vf_instance_t *vf, int request, void *data)
{
switch (request) {
case VFCTRL_SEEK_RESET:
vf_detc_init_pts_buf(&vf->priv->ptsbuf);
return CONTROL_OK;
}
return CONTROL_UNKNOWN;
}
static void uninit(struct vf_instance *vf)
{
MP_INFO(vf, "softpulldown: %lld frames in, %lld frames out\n", vf->priv->in, vf->priv->out);
free(vf->priv);
}
static int query_format(struct vf_instance *vf, unsigned int fmt)
{
struct mp_imgfmt_desc desc = mp_imgfmt_get_desc(fmt);
if (!(desc.flags & MP_IMGFLAG_YUV_P))
return 0;
if (desc.plane_bits != 8)
return 0;
return vf_next_query_format(vf, fmt);
}
static int vf_open(vf_instance_t *vf)
{
vf->filter_ext = filter;
vf->control = control;
vf->uninit = uninit;
vf->query_format = query_format;
vf->priv = calloc(1, sizeof(struct vf_priv_s));
vf->priv->last_frame_duration = 2;
vf_detc_init_pts_buf(&vf->priv->ptsbuf);
return 1;
}
const vf_info_t vf_info_softpulldown = {
.description = "mpeg2 soft 3:2 pulldown",
.name = "softpulldown",
.open = vf_open,
};
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