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Original Path: trunk/xvidcore/src/image/interpolate8x8.h

1 : chl 433 /*****************************************************************************
2 :     *
3 :     * XVID MPEG-4 VIDEO CODEC
4 :     * - 8x8 block-based halfpel interpolation - headers
5 :     *
6 :     * Copyright(C) 2002 Peter Ross <pross@xvid.org>
7 :     *
8 : edgomez 651 * This file is part of XviD, a free MPEG-4 video encoder/decoder
9 : chl 433 *
10 : edgomez 651 * XviD is free software; you can redistribute it and/or modify it
11 :     * under the terms of the GNU General Public License as published by
12 : chl 433 * the Free Software Foundation; either version 2 of the License, or
13 :     * (at your option) any later version.
14 :     *
15 :     * This program is distributed in the hope that it will be useful,
16 :     * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 :     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 :     * GNU General Public License for more details.
19 :     *
20 :     * You should have received a copy of the GNU General Public License
21 :     * along with this program; if not, write to the Free Software
22 :     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 :     *
24 : edgomez 651 * 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 : edgomez 830 * $Id: interpolate8x8.h,v 1.9 2003-02-11 21:56:31 edgomez Exp $
54 : edgomez 651 *
55 : chl 433 ****************************************************************************/
56 :    
57 : Isibaar 3 #include "../utils/mem_transfer.h"
58 :    
59 : edgomez 195 typedef void (INTERPOLATE8X8) (uint8_t * const dst,
60 :     const uint8_t * const src,
61 :     const uint32_t stride,
62 :     const uint32_t rounding);
63 :     typedef INTERPOLATE8X8 *INTERPOLATE8X8_PTR;
64 : Isibaar 3
65 :     extern INTERPOLATE8X8_PTR interpolate8x8_halfpel_h;
66 :     extern INTERPOLATE8X8_PTR interpolate8x8_halfpel_v;
67 :     extern INTERPOLATE8X8_PTR interpolate8x8_halfpel_hv;
68 :    
69 :     INTERPOLATE8X8 interpolate8x8_halfpel_h_c;
70 :     INTERPOLATE8X8 interpolate8x8_halfpel_v_c;
71 :     INTERPOLATE8X8 interpolate8x8_halfpel_hv_c;
72 :    
73 :     INTERPOLATE8X8 interpolate8x8_halfpel_h_mmx;
74 :     INTERPOLATE8X8 interpolate8x8_halfpel_v_mmx;
75 :     INTERPOLATE8X8 interpolate8x8_halfpel_hv_mmx;
76 :    
77 :     INTERPOLATE8X8 interpolate8x8_halfpel_h_xmm;
78 :     INTERPOLATE8X8 interpolate8x8_halfpel_v_xmm;
79 :     INTERPOLATE8X8 interpolate8x8_halfpel_hv_xmm;
80 :    
81 :     INTERPOLATE8X8 interpolate8x8_halfpel_h_3dn;
82 :     INTERPOLATE8X8 interpolate8x8_halfpel_v_3dn;
83 :     INTERPOLATE8X8 interpolate8x8_halfpel_hv_3dn;
84 :    
85 : Isibaar 209 INTERPOLATE8X8 interpolate8x8_halfpel_h_ia64;
86 :     INTERPOLATE8X8 interpolate8x8_halfpel_v_ia64;
87 :     INTERPOLATE8X8 interpolate8x8_halfpel_hv_ia64;
88 :    
89 : Isibaar 333 void interpolate8x8_c(uint8_t * const dst,
90 :     const uint8_t * const src,
91 :     const uint32_t x,
92 :     const uint32_t y,
93 :     const uint32_t stride);
94 :    
95 : edgomez 195 static __inline void
96 :     interpolate8x8_switch(uint8_t * const cur,
97 :     const uint8_t * const refn,
98 :     const uint32_t x,
99 :     const uint32_t y,
100 :     const int32_t dx,
101 :     const int dy,
102 :     const uint32_t stride,
103 :     const uint32_t rounding)
104 : Isibaar 3 {
105 :     int32_t ddx, ddy;
106 :    
107 : edgomez 677 switch (((dx & 1) << 1) + (dy & 1)) /* ((dx%2)?2:0)+((dy%2)?1:0) */
108 : edgomez 195 {
109 :     case 0:
110 :     ddx = dx / 2;
111 :     ddy = dy / 2;
112 :     transfer8x8_copy(cur + y * stride + x,
113 : Isibaar 209 refn + (int)((y + ddy) * stride + x + ddx), stride);
114 : Isibaar 3 break;
115 :    
116 : edgomez 195 case 1:
117 :     ddx = dx / 2;
118 :     ddy = (dy - 1) / 2;
119 :     interpolate8x8_halfpel_v(cur + y * stride + x,
120 : Isibaar 209 refn + (int)((y + ddy) * stride + x + ddx), stride,
121 : edgomez 195 rounding);
122 : Isibaar 3 break;
123 :    
124 : edgomez 195 case 2:
125 :     ddx = (dx - 1) / 2;
126 :     ddy = dy / 2;
127 :     interpolate8x8_halfpel_h(cur + y * stride + x,
128 : Isibaar 209 refn + (int)((y + ddy) * stride + x + ddx), stride,
129 : edgomez 195 rounding);
130 : Isibaar 3 break;
131 :    
132 : edgomez 195 default:
133 :     ddx = (dx - 1) / 2;
134 :     ddy = (dy - 1) / 2;
135 :     interpolate8x8_halfpel_hv(cur + y * stride + x,
136 : Isibaar 209 refn + (int)((y + ddy) * stride + x + ddx), stride,
137 : edgomez 195 rounding);
138 : Isibaar 3 break;
139 : edgomez 195 }
140 : Isibaar 3 }
141 : chenm001 156

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