mirror of
https://github.com/FFmpeg/FFmpeg.git
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2da5bf4c2f
This complex (-1 2 6 2 -1) filter slightly less reduces interlace 'twitter' but better retain detail and subjective sharpness impression compared to the linear (1 2 1) filter. Signed-off-by: Thomas Mundt <tmundt75@gmail.com> Signed-off-by: James Almer <jamrial@gmail.com>
65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* FFmpeg 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/**
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* @file
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* progressive to interlaced content filter, inspired by heavy debugging of
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* tinterlace filter.
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*/
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#ifndef AVFILTER_INTERLACE_H
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#define AVFILTER_INTERLACE_H
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#include "libavutil/common.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/opt.h"
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#include "avfilter.h"
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#include "formats.h"
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#include "internal.h"
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#include "video.h"
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enum ScanMode {
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MODE_TFF = 0,
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MODE_BFF = 1,
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};
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enum FieldType {
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FIELD_UPPER = 0,
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FIELD_LOWER = 1,
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};
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enum VLPFilter {
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VLPF_OFF = 0,
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VLPF_LIN = 1,
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VLPF_CMP = 2,
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};
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typedef struct InterlaceContext {
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const AVClass *class;
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enum ScanMode scan; // top or bottom field first scanning
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int lowpass; // enable or disable low pass filtering
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AVFrame *cur, *next; // the two frames from which the new one is obtained
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void (*lowpass_line)(uint8_t *dstp, ptrdiff_t linesize, const uint8_t *srcp,
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ptrdiff_t mref, ptrdiff_t pref);
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} InterlaceContext;
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void ff_interlace_init_x86(InterlaceContext *interlace);
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#endif /* AVFILTER_INTERLACE_H */
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