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FFmpeg/libavfilter/yadif.h
James Darnley b0ef0ae776 yadif: restore speed of the C filtering code
Always use the special filter for the first and last 3 columns (only).

Changes made in 64ed397 slowed the filter to just under 3/4 of what it
was.  This commit restores the speed while maintaining identical output.

For reference, on my Athlon64:
1733222 decicycles in old
2358563 decicycles in new
1727558 decicycles in this

Signed-off-by: Anton Khirnov <anton@khirnov.net>
2013-05-14 09:23:55 +02:00

71 lines
1.9 KiB
C

/*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef AVFILTER_YADIF_H
#define AVFILTER_YADIF_H
#include "libavutil/pixdesc.h"
#include "avfilter.h"
typedef struct YADIFContext {
const AVClass *class;
/**
* 0: send 1 frame for each frame
* 1: send 1 frame for each field
* 2: like 0 but skips spatial interlacing check
* 3: like 1 but skips spatial interlacing check
*/
int mode;
/**
* 0: top field first
* 1: bottom field first
* -1: auto-detection
*/
int parity;
int frame_pending;
/**
* 0: deinterlace all frames
* 1: only deinterlace frames marked as interlaced
*/
int auto_enable;
AVFrame *cur;
AVFrame *next;
AVFrame *prev;
AVFrame *out;
/**
* Required alignment for filter_line
*/
void (*filter_line)(void *dst,
void *prev, void *cur, void *next,
int w, int prefs, int mrefs, int parity, int mode);
void (*filter_edges)(void *dst, void *prev, void *cur, void *next,
int w, int prefs, int mrefs, int parity, int mode);
const AVPixFmtDescriptor *csp;
int eof;
} YADIFContext;
void ff_yadif_init_x86(YADIFContext *yadif);
#endif /* AVFILTER_YADIF_H */