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/*****************************************************************************
* deinterlace.c: VDPAU deinterlacing filter
*****************************************************************************
* Copyright (C) 2013 Rémi Denis-Courmont
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <stdlib.h>
#include <assert.h>
#include <vlc_common.h>
#include <vlc_plugin.h>
#include <vlc_filter.h>
#include "vlc_vdpau.h"
struct filter_sys_t
{
mtime_t last_pts;
};
static picture_t *Deinterlace(filter_t *filter, picture_t *src)
{
filter_sys_t *sys = filter->p_sys;
mtime_t last_pts = sys->last_pts;
sys->last_pts = src->date;
vlc_vdp_video_field_t *f1 = src->context;
if (unlikely(f1 == NULL))
return src;
if (f1->structure != VDP_VIDEO_MIXER_PICTURE_STRUCTURE_FRAME)
return src; /* cannot deinterlace twice */
#ifdef VOUT_CORE_GETS_A_CLUE
picture_t *dst = filter_NewPicture(filter);
#else
picture_t *dst = picture_NewFromFormat(&src->format);
#endif
if (dst == NULL)
return src; /* cannot deinterlace without copying fields */
vlc_vdp_video_field_t *f2 = vlc_vdp_video_copy(f1); // shallow copy
if (unlikely(f2 == NULL))
{
picture_Release(dst);
return src;
}
picture_CopyProperties(dst, src);
dst->context = f2;
if (last_pts != VLC_TS_INVALID)
dst->date = (3 * src->date - last_pts) / 2;
else
if (filter->fmt_in.video.i_frame_rate != 0)
dst->date = src->date + ((filter->fmt_in.video.i_frame_rate_base
* CLOCK_FREQ) / filter->fmt_in.video.i_frame_rate);
dst->b_top_field_first = !src->b_top_field_first;
dst->i_nb_fields = 1;
src->i_nb_fields = 1;
assert(src->p_next == NULL);
src->p_next = dst;
if (src->b_progressive || src->b_top_field_first)
{
f1->structure = VDP_VIDEO_MIXER_PICTURE_STRUCTURE_TOP_FIELD;
f2->structure = VDP_VIDEO_MIXER_PICTURE_STRUCTURE_BOTTOM_FIELD;
}
else
{
f1->structure = VDP_VIDEO_MIXER_PICTURE_STRUCTURE_BOTTOM_FIELD;
f2->structure = VDP_VIDEO_MIXER_PICTURE_STRUCTURE_TOP_FIELD;
}
src->b_progressive = true;
dst->b_progressive = true;
return src;
}
static int Open(vlc_object_t *obj)
{
filter_t *filter = (filter_t *)obj;
if (filter->fmt_in.video.i_chroma != VLC_CODEC_VDPAU_VIDEO_422
&& filter->fmt_in.video.i_chroma != VLC_CODEC_VDPAU_VIDEO_420)
return VLC_EGENERIC;
if (!video_format_IsSimilar(&filter->fmt_in.video, &filter->fmt_out.video))
return VLC_EGENERIC;
filter_sys_t *sys = malloc(sizeof (*sys));
if (unlikely(sys == NULL))
return VLC_ENOMEM;
/* NOTE: Only weave and bob are mandatory for the hardware to implement.
* The other modes and IVTC should be checked. */
sys->last_pts = VLC_TS_INVALID;
filter->pf_video_filter = Deinterlace;
filter->p_sys = sys;
filter->fmt_out.video.i_frame_rate *= 2;
return VLC_SUCCESS;
}
static void Close(vlc_object_t *obj)
{
filter_t *filter = (filter_t *)obj;
filter_sys_t *sys = filter->p_sys;
free(sys);
}
vlc_module_begin()
set_description(N_("VDPAU deinterlacing filter"))
set_capability("video filter2", 0)
set_category(CAT_VIDEO)
set_subcategory(SUBCAT_VIDEO_VFILTER)
set_callbacks(Open, Close)
add_shortcut ("deinterlace")
vlc_module_end()
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