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