[cvs] / xvidcore / src / image / interpolate8x8.c Repository:
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revision 1.10.2.3, Mon Jun 9 13:54:02 2003 UTC revision 1.11, Tue Mar 4 16:33:41 2003 UTC
# Line 1  Line 1 
1  /*****************************************************************************  /**************************************************************************
2   *   *
3   *      XVID MPEG-4 VIDEO CODEC   *      XVID MPEG-4 VIDEO CODEC
4   *      - 8x8 block-based halfpel interpolation -   *      8x8 block-based halfpel interpolation
  *  
  *  Copyright(C) 2001-2003 Peter Ross <pross@xvid.org>  
5   *   *
6   *  This program is free software ; you can redistribute it and/or modify   *  This program is free software ; you can redistribute it and/or modify
7   *  it under the terms of the GNU General Public License as published by   *  it under the terms of the GNU General Public License as published by
# Line 17  Line 15 
15   *   *
16   *  You should have received a copy of the GNU General Public License   *  You should have received a copy of the GNU General Public License
17   *  along with this program ; if not, write to the Free Software   *  along with this program ; if not, write to the Free Software
18   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA   *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19     *
20     *************************************************************************/
21    
22    /**************************************************************************
23   *   *
24   * $Id$   *      History:
25   *   *
26   ****************************************************************************/   *  05.10.2002  new bilinear and qpel interpolation code - Isibaar
27     *      27.12.2001      modified "compensate_halfpel"
28     *      05.11.2001      initial version; (c)2001 peter ross <pross@cs.rmit.edu.au>
29     *
30     *************************************************************************/
31    
32    
33  #include "../portab.h"  #include "../portab.h"
34  #include "../global.h"  #include "../global.h"
35  #include "interpolate8x8.h"  #include "interpolate8x8.h"
36    
37  /* function pointers */  // function pointers
38  INTERPOLATE8X8_PTR interpolate8x8_halfpel_h;  INTERPOLATE8X8_PTR interpolate8x8_halfpel_h;
39  INTERPOLATE8X8_PTR interpolate8x8_halfpel_v;  INTERPOLATE8X8_PTR interpolate8x8_halfpel_v;
40  INTERPOLATE8X8_PTR interpolate8x8_halfpel_hv;  INTERPOLATE8X8_PTR interpolate8x8_halfpel_hv;
# Line 93  Line 100 
100      }      }
101  }  }
102    
103  /* dst = interpolate(src) */  // dst = interpolate(src)
104    
105  void  void
106  interpolate8x8_halfpel_h_c(uint8_t * const dst,  interpolate8x8_halfpel_h_c(uint8_t * const dst,
# Line 138  Line 145 
145                                                     const uint32_t rounding)                                                     const uint32_t rounding)
146  {  {
147          intptr_t j;          intptr_t j;
148    //      const uint8_t * const src2 = src+stride;                /* using a second pointer is _not_ faster here */
149    
150          if (rounding)          if (rounding)
151                  for (j = 0; j < 8*stride; j+=stride)            /* forward is better. Some automatic prefetch perhaps. */                  for (j = 0; j < 8*stride; j+=stride)            /* forward is better. Some automatic prefetch perhaps. */
# Line 201  Line 208 
208                  }                  }
209  }  }
210    
211    
212    
213    
214  /*************************************************************  /*************************************************************
215   * QPEL STUFF STARTS HERE                                    *   * QPEL STUFF STARTS HERE                                    *
216   *************************************************************/   *************************************************************/
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