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/*
* Copyright (c) 2011 Stefano Sabatini
* Copyright (c) 2010 Baptiste Coudurier
* Copyright (c) 2003 Michael Zucchi <notzed@ximian.com>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/**
* @file
* temporal field interlace filter, ported from MPlayer/libmpcodecs
*/
#ifndef AVFILTER_TINTERLACE_H
#define AVFILTER_TINTERLACE_H
#include "libavutil/bswap.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "drawutils.h"
#include "avfilter.h"
#define TINTERLACE_FLAG_VLPF 01
#define TINTERLACE_FLAG_CVLPF 2
#define TINTERLACE_FLAG_EXACT_TB 4
#define TINTERLACE_FLAG_BYPASS_IL 8
enum VLPFilter {
VLPF_OFF = 0,
VLPF_LIN = 1,
VLPF_CMP = 2,
};
enum TInterlaceMode {
MODE_MERGE = 0,
MODE_DROP_EVEN,
MODE_DROP_ODD,
MODE_PAD,
MODE_INTERLEAVE_TOP,
MODE_INTERLEAVE_BOTTOM,
MODE_INTERLACEX2,
MODE_MERGEX2,
MODE_NB,
};
enum InterlaceScanMode {
MODE_TFF = 0,
MODE_BFF,
};
typedef struct TInterlaceContext {
const AVClass *class;
int mode; ///< TInterlaceMode, interlace mode selected
AVRational preout_time_base;
int flags; ///< flags affecting interlacing algorithm
int lowpass; ///< legacy interlace filter lowpass mode
int vsub; ///< chroma vertical subsampling
AVFrame *cur;
AVFrame *next;
uint8_t *black_data[2][4]; ///< buffer used to fill padded lines (limited/full)
int black_linesize[4];
FFDrawContext draw;
FFDrawColor color;
const AVPixFmtDescriptor *csp;
void (*lowpass_line)(uint8_t *dstp, ptrdiff_t width, const uint8_t *srcp,
ptrdiff_t mref, ptrdiff_t pref, int clip_max);
} TInterlaceContext;
void ff_tinterlace_init_x86(TInterlaceContext *interlace);
#endif /* AVFILTER_TINTERLACE_H */
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