modules/video_filter/deinterlace/algo_x.h

   1 /*****************************************************************************
   2  * algo_x.h : "X" algorithm for vlc deinterlacer
   3  *****************************************************************************
   4  * Copyright (C) 2000-2011 VLC authors and VideoLAN
   5  * $Id$
   6  *
   7  * Author: Laurent Aimar <fenrir@videolan.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with this program; if not, write to the Free Software Foundation,
  21  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifndef VLC_DEINTERLACE_ALGO_X_H
  25 #define VLC_DEINTERLACE_ALGO_X_H 1
  26
  27 /* Forward declarations */
  28 struct picture_t;
  29
  30 /*****************************************************************************
  31  * Functions
  32  *****************************************************************************/
  33
  34 /**
  35  * Interpolating deinterlace filter "X".
  36  *
  37  * The algorithm works on a 8x8 block basic, it copies the top field
  38  * and applies a process to recreate the bottom field.
  39  *
  40  * If a 8x8 block is classified as :
  41  *   - progressive: it applies a small blend (1,6,1)
  42  *   - interlaced:
  43  *    * in the MMX version: we do a ME between the 2 fields, if there is a
  44  *      good match we use MC to recreate the bottom field (with a small
  45  *      blend (1,6,1) )
  46  *    * otherwise: it recreates the bottom field by an edge oriented
  47  *      interpolation.
  48  *
  49  * @param[in] p_pic Input frame.
  50  * @param[out] p_outpic Output frame. Must be allocated by caller.
  51  * @see Deinterlace()
  52  */
  53 void RenderX( picture_t *p_outpic, picture_t *p_pic );
  54
  55 #endif