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revision 1.6, Fri Sep 6 17:37:07 2002 UTC revision 1.9, Tue Feb 11 21:56:31 2003 UTC
# Line 5  Line 5 
5   *   *
6   *  Copyright(C) 2002 Peter Ross <pross@xvid.org>   *  Copyright(C) 2002 Peter Ross <pross@xvid.org>
7   *   *
8   *  This program is an implementation of a part of one or more MPEG-4   *  This file is part of XviD, a free MPEG-4 video encoder/decoder
  *  Video tools as specified in ISO/IEC 14496-2 standard.  Those intending  
  *  to use this software module in hardware or software products are  
  *  advised that its use may infringe existing patents or copyrights, and  
  *  any such use would be at such party's own risk.  The original  
  *  developer of this software module and his/her company, and subsequent  
  *  editors and their companies, will have no liability for use of this  
  *  software or modifications or derivatives thereof.  
9   *   *
10   *  This program is free software; you can redistribute it and/or modify   *  XviD is free software; you can redistribute it and/or modify it
11   *  it under the terms of the GNU General Public License as published by   *  under the terms of the GNU General Public License as published by
12   *  the Free Software Foundation; either version 2 of the License, or   *  the Free Software Foundation; either version 2 of the License, or
13   *  (at your option) any later version.   *  (at your option) any later version.
14   *   *
# Line 28  Line 21 
21   *  along with this program; if not, write to the Free Software   *  along with this program; if not, write to the Free Software
22   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA   *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
23   *   *
24     *  Under section 8 of the GNU General Public License, the copyright
25     *  holders of XVID explicitly forbid distribution in the following
26     *  countries:
27     *
28     *    - Japan
29     *    - United States of America
30     *
31     *  Linking XviD statically or dynamically with other modules is making a
32     *  combined work based on XviD.  Thus, the terms and conditions of the
33     *  GNU General Public License cover the whole combination.
34     *
35     *  As a special exception, the copyright holders of XviD give you
36     *  permission to link XviD with independent modules that communicate with
37     *  XviD solely through the VFW1.1 and DShow interfaces, regardless of the
38     *  license terms of these independent modules, and to copy and distribute
39     *  the resulting combined work under terms of your choice, provided that
40     *  every copy of the combined work is accompanied by a complete copy of
41     *  the source code of XviD (the version of XviD used to produce the
42     *  combined work), being distributed under the terms of the GNU General
43     *  Public License plus this exception.  An independent module is a module
44     *  which is not derived from or based on XviD.
45     *
46     *  Note that people who make modified versions of XviD are not obligated
47     *  to grant this special exception for their modified versions; it is
48     *  their choice whether to do so.  The GNU General Public License gives
49     *  permission to release a modified version without this exception; this
50     *  exception also makes it possible to release a modified version which
51     *  carries forward this exception.
52     *
53     * $Id$
54     *
55   ****************************************************************************/   ****************************************************************************/
56    
57  #include "../utils/mem_transfer.h"  #include "../utils/mem_transfer.h"
# Line 62  Line 86 
86  INTERPOLATE8X8 interpolate8x8_halfpel_v_ia64;  INTERPOLATE8X8 interpolate8x8_halfpel_v_ia64;
87  INTERPOLATE8X8 interpolate8x8_halfpel_hv_ia64;  INTERPOLATE8X8 interpolate8x8_halfpel_hv_ia64;
88    
 void interpolate8x8_lowpass_h(uint8_t *dst, uint8_t *src, int32_t dst_stride, int32_t src_stride, int32_t rounding);  
 void interpolate8x8_lowpass_v(uint8_t *dst, uint8_t *src, int32_t dst_stride, int32_t src_stride, int32_t rounding);  
 void interpolate8x8_lowpass_hv(uint8_t *dst1, uint8_t *dst2, uint8_t *src, int32_t dst1_stride, int32_t dst2_stride, int32_t src_stride, int32_t rounding);  
 void interpolate8x8_bilinear2(uint8_t *dst, uint8_t *src1, uint8_t *src2, int32_t dst_stride, int32_t src_stride, int32_t rounding);  
 void interpolate8x8_bilinear4(uint8_t *dst, uint8_t *src1, uint8_t *src2, uint8_t *src3, uint8_t *src4, int32_t stride, int32_t rounding);  
   
89  void interpolate8x8_c(uint8_t * const dst,  void interpolate8x8_c(uint8_t * const dst,
90                                            const uint8_t * const src,                                            const uint8_t * const src,
91                                            const uint32_t x,                                            const uint32_t x,
# Line 86  Line 104 
104  {  {
105          int32_t ddx, ddy;          int32_t ddx, ddy;
106    
107          switch (((dx & 1) << 1) + (dy & 1))     // ((dx%2)?2:0)+((dy%2)?1:0)          switch (((dx & 1) << 1) + (dy & 1))     /* ((dx%2)?2:0)+((dy%2)?1:0) */
108          {          {
109          case 0:          case 0:
110                  ddx = dx / 2;                  ddx = dx / 2;
# Line 121  Line 139 
139          }          }
140  }  }
141    
   
 static __inline void interpolate8x8_quarterpel(uint8_t * const cur,  
                                      uint8_t * const refn,  
                                      const uint32_t x, const uint32_t y,  
                                          const int32_t dx,  const int dy,  
                                          const uint32_t stride,  
                                          const uint32_t rounding)  
 {  
         const int32_t xRef = x*4 + dx;  
         const int32_t yRef = y*4 + dy;  
   
         uint8_t *src, *dst;  
         int32_t x_int, y_int, x_frac, y_frac;  
   
         uint8_t halfpel_h[72];  
         uint8_t halfpel_v[64];  
         uint8_t halfpel_hv[64];  
   
         x_int = xRef/4;  
         if (xRef < 0 && xRef % 4)  
                 x_int--;  
   
         x_frac = xRef - (4*x_int);  
   
         y_int  = yRef/4;  
         if (yRef < 0 && yRef % 4)  
                 y_int--;  
   
         y_frac = yRef - (4*y_int);  
   
         src = refn + y_int * stride + x_int;  
         dst = cur + y * stride + x;  
   
         switch((y_frac << 2) | (x_frac)) {  
   
         case 0:  
                 transfer8x8_copy(dst, src, stride);  
                 break;  
   
         case 1:  
                 interpolate8x8_lowpass_h(halfpel_h, src, 8, stride, rounding);  
                 interpolate8x8_bilinear2(dst, src, halfpel_h, stride, stride, rounding);  
                 break;  
   
         case 2:  
             interpolate8x8_lowpass_h(dst, src, stride, stride, rounding);  
                 break;  
   
         case 3:  
                 interpolate8x8_lowpass_h(halfpel_h, src, 8, stride, rounding);  
                 interpolate8x8_bilinear2(dst, src+1, halfpel_h, stride, stride, rounding);  
                 break;  
   
         case 4:  
                 interpolate8x8_lowpass_v(halfpel_v, src, 8, stride, rounding);  
                 interpolate8x8_bilinear2(dst, src, halfpel_v, stride, stride, rounding);  
                 break;  
   
         case 5:  
                 interpolate8x8_lowpass_v(halfpel_v, src, 8, stride, rounding);  
                 interpolate8x8_lowpass_hv(halfpel_hv, halfpel_h, src, 8, 8, stride, rounding);  
                 interpolate8x8_bilinear4(dst, src, halfpel_h, halfpel_v, halfpel_hv, stride, rounding);  
                 break;  
   
         case 6:  
                 interpolate8x8_lowpass_hv(halfpel_hv, halfpel_h, src, 8, 8, stride, rounding);  
                 interpolate8x8_bilinear2(dst, halfpel_h, halfpel_hv, stride, 8, 1-rounding);  
                 break;  
   
         case 7:  
                 interpolate8x8_lowpass_v(halfpel_v, src+1, 8, stride, 16-rounding);  
                 interpolate8x8_lowpass_hv(halfpel_hv, halfpel_h, src, 8, 8, stride, rounding);  
                 interpolate8x8_bilinear4(dst, src+1, halfpel_h, halfpel_v, halfpel_hv, stride, rounding);  
                 break;  
   
         case 8:  
             interpolate8x8_lowpass_v(dst, src, stride, stride, rounding);  
                 break;  
   
         case 9:  
                 interpolate8x8_lowpass_v(halfpel_v, src, 8, stride, 16-rounding);  
                 interpolate8x8_lowpass_hv(halfpel_hv, halfpel_h, src, 8, 8, stride, rounding);  
                 interpolate8x8_bilinear2(dst, halfpel_v, halfpel_hv, stride, 8, rounding);  
                 break;  
   
         case 10:  
                 interpolate8x8_lowpass_hv(dst, halfpel_h, src, stride, 8, stride, rounding);  
                 break;  
   
         case 11:  
                 interpolate8x8_lowpass_v(halfpel_v, src+1, 8, stride, 16-rounding);  
                 interpolate8x8_lowpass_hv(halfpel_hv, halfpel_h, src, 8, 8, stride, rounding);  
                 interpolate8x8_bilinear2(dst, halfpel_v, halfpel_hv, stride, 8, rounding);  
                 break;  
   
         case 12:  
                 interpolate8x8_lowpass_v(halfpel_v, src, 8, stride, rounding);  
                 interpolate8x8_bilinear2(dst, src+stride, halfpel_v, stride, stride, rounding);  
                 break;  
   
         case 13:  
                 interpolate8x8_lowpass_v(halfpel_v, src, 8, stride, rounding);  
                 interpolate8x8_lowpass_hv(halfpel_hv, halfpel_h, src, 8, 8, stride, rounding);  
                 interpolate8x8_bilinear4(dst, src+stride, halfpel_h+8, halfpel_v, halfpel_hv, stride, rounding);  
                 break;  
   
         case 14:  
                 interpolate8x8_lowpass_hv(halfpel_hv, halfpel_h, src, 8, 8, stride, rounding);  
                 interpolate8x8_bilinear2(dst, halfpel_h+8, halfpel_hv, stride, 8, rounding);  
                 break;  
   
         case 15:  
                 interpolate8x8_lowpass_v(halfpel_v, src+1, 8, stride, rounding);  
                 interpolate8x8_lowpass_hv(halfpel_hv, halfpel_h, src, 8, 8, stride, rounding);  
                 interpolate8x8_bilinear4(dst, src+stride+1, halfpel_h+8, halfpel_v, halfpel_hv, stride, rounding);  
                 break;  
         }  
 }  

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