/*
  * 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.
  */
 
 #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;
 

     enum YADIFMode   mode;
     enum YADIFParity parity;
     enum YADIFDeint  deint;

     int frame_pending;
 
     AVFilterBufferRef *cur;
     AVFilterBufferRef *next;
     AVFilterBufferRef *prev;
     AVFilterBufferRef *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;

     uint8_t *temp_line;
     int temp_line_size;

 } YADIFContext;
 
 void ff_yadif_init_x86(YADIFContext *yadif);

 #endif /* AVFILTER_YADIF_H */