/*
  * This file is part of FFmpeg.
  *

  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 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
  * Lesser General Public License for more details.

  *

  * You should have received a copy of the GNU Lesser 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

  */
 
 #ifndef AVFILTER_YADIF_H
 #define AVFILTER_YADIF_H
 

 #include "libavutil/pixdesc.h"

 #include "avfilter.h"
 

 enum YADIFMode {
     YADIF_MODE_SEND_FRAME           = 0, ///< send 1 frame for each frame
     YADIF_MODE_SEND_FIELD           = 1, ///< send 1 frame for each field
     YADIF_MODE_SEND_FRAME_NOSPATIAL = 2, ///< send 1 frame for each frame but skips spatial interlacing check
     YADIF_MODE_SEND_FIELD_NOSPATIAL = 3, ///< send 1 frame for each field but skips spatial interlacing check
 };
 
 enum YADIFParity {
     YADIF_PARITY_TFF  =  0, ///< top field first
     YADIF_PARITY_BFF  =  1, ///< bottom field first
     YADIF_PARITY_AUTO = -1, ///< auto detection
 };
 
 enum YADIFDeint {
     YADIF_DEINT_ALL        = 0, ///< deinterlace all frames
     YADIF_DEINT_INTERLACED = 1, ///< only deinterlace frames marked as interlaced
 };
 

 typedef struct YADIFContext {
     const AVClass *class;

     int mode;           ///< YADIFMode
     int parity;         ///< YADIFParity
     int deint;          ///< YADIFDeint

     int frame_pending;
 
     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;
     uint8_t *temp_line;
     int temp_line_size;
 } YADIFContext;
 
 void ff_yadif_init_x86(YADIFContext *yadif);

 #endif /* AVFILTER_YADIF_H */