text: /*
   * 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/opt.h"
  #include "avfilter.h"
  
  enum TInterlaceMode {
      MODE_MERGE = 0,
      MODE_DROP_EVEN,
      MODE_DROP_ODD,
      MODE_PAD,
      MODE_INTERLEAVE_TOP,
      MODE_INTERLEAVE_BOTTOM,
      MODE_INTERLACEX2,
      MODE_NB,
  };
  
  typedef struct {
      const AVClass *class;
      enum TInterlaceMode mode;   ///< interlace mode selected
      AVRational preout_time_base;
      int flags;                  ///< flags affecting interlacing algorithm
      int frame;                  ///< number of the output frame
      int vsub;                   ///< chroma vertical subsampling
      AVFrame *cur;
      AVFrame *next;
      uint8_t *black_data[4];     ///< buffer used to fill padded lines
      int black_linesize[4];
      void (*lowpass_line)(uint8_t *dstp, ptrdiff_t width, const uint8_t *srcp,
                           const uint8_t *srcp_above, const uint8_t *srcp_below);
  } TInterlaceContext;
  
  void ff_tinterlace_init_x86(TInterlaceContext *interlace);
  
  #endif /* AVFILTER_TINTERLACE_H */
  