3 * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
4 * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
6 * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
7 * See http://libmpeg2.sourceforge.net/ for updates.
9 * mpeg2dec is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * mpeg2dec 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 General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
29 #include "attributes.h"
30 #include "mpeg2_internal.h"
34 void mpeg2_mc_init (uint32_t accel)
36 if (accel & MPEG2_ACCEL_X86_MMXEXT)
37 mpeg2_mc = mpeg2_mc_mmxext;
38 else if (accel & MPEG2_ACCEL_X86_3DNOW)
39 mpeg2_mc = mpeg2_mc_3dnow;
40 else if (accel & MPEG2_ACCEL_X86_MMX)
41 mpeg2_mc = mpeg2_mc_mmx;
43 mpeg2_mc = mpeg2_mc_c;
46 #define avg2(a,b) ((a+b+1)>>1)
47 #define avg4(a,b,c,d) ((a+b+c+d+2)>>2)
49 #define predict_o(i) (ref[i])
50 #define predict_x(i) (avg2 (ref[i], ref[i+1]))
51 #define predict_y(i) (avg2 (ref[i], (ref+stride)[i]))
52 #define predict_xy(i) (avg4 (ref[i], ref[i+1], \
53 (ref+stride)[i], (ref+stride)[i+1]))
55 #define put(predictor,i) dest[i] = predictor (i)
56 #define avg(predictor,i) dest[i] = avg2 (predictor (i), dest[i])
58 /* mc function template */
60 #define MC_FUNC(op,xy) \
61 static void MC_##op##_##xy##_16_c (uint8_t * dest, const uint8_t * ref, \
62 const int stride, int height) \
65 op (predict_##xy, 0); \
66 op (predict_##xy, 1); \
67 op (predict_##xy, 2); \
68 op (predict_##xy, 3); \
69 op (predict_##xy, 4); \
70 op (predict_##xy, 5); \
71 op (predict_##xy, 6); \
72 op (predict_##xy, 7); \
73 op (predict_##xy, 8); \
74 op (predict_##xy, 9); \
75 op (predict_##xy, 10); \
76 op (predict_##xy, 11); \
77 op (predict_##xy, 12); \
78 op (predict_##xy, 13); \
79 op (predict_##xy, 14); \
80 op (predict_##xy, 15); \
85 static void MC_##op##_##xy##_8_c (uint8_t * dest, const uint8_t * ref, \
86 const int stride, int height) \
89 op (predict_##xy, 0); \
90 op (predict_##xy, 1); \
91 op (predict_##xy, 2); \
92 op (predict_##xy, 3); \
93 op (predict_##xy, 4); \
94 op (predict_##xy, 5); \
95 op (predict_##xy, 6); \
96 op (predict_##xy, 7); \
102 /* definitions of the actual mc functions */