FFmpeg/libavfilter/yadif.h

/*
 * 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
     */
    int req_align;
    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,
                         int l_edge);

    const AVPixFmtDescriptor *csp;
    int eof;
} YADIFContext;

void ff_yadif_init_x86(YADIFContext *yadif);

#endif /* AVFILTER_YADIF_H */