A modern Music Player Daemon based on Rockbox open source high quality audio player
tsiry-sandratraina.com
libadwaita
audio
rust
zig
deno
mpris
rockbox
mpd
1/*
2 * motion_comp.h
3 * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org>
4 * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
5 *
6 * This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
7 * See http://libmpeg2.sourceforge.net/ for updates.
8 *
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.
13 *
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.
18 *
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
22 *
23 * $Id$
24 */
25
26
27#define avg2(a,b) ((a+b+1)>>1)
28#define avg4(a,b,c,d) ((a+b+c+d+2)>>2)
29
30#define predict_o(i) (ref[i])
31#define predict_x(i) (avg2 (ref[i], ref[i+1]))
32#define predict_y(i) (avg2 (ref[i], (ref+stride)[i]))
33#define predict_xy(i) (avg4 (ref[i], ref[i+1], \
34 (ref+stride)[i], (ref+stride)[i+1]))
35
36#define put(predictor,i) dest[i] = predictor (i)
37#define avg(predictor,i) dest[i] = avg2 (predictor (i), dest[i])
38
39/* mc function template */
40#define MC_FUNC(op, xy) \
41 MC_FUNC_16(op, xy) \
42 MC_FUNC_8(op, xy)
43
44#define MC_FUNC_16(op, xy) \
45 void MC_##op##_##xy##_16 (uint8_t * dest, const uint8_t * ref, \
46 const int stride, int height) \
47 { \
48 do { \
49 op (predict_##xy, 0); \
50 op (predict_##xy, 1); \
51 op (predict_##xy, 2); \
52 op (predict_##xy, 3); \
53 op (predict_##xy, 4); \
54 op (predict_##xy, 5); \
55 op (predict_##xy, 6); \
56 op (predict_##xy, 7); \
57 op (predict_##xy, 8); \
58 op (predict_##xy, 9); \
59 op (predict_##xy, 10); \
60 op (predict_##xy, 11); \
61 op (predict_##xy, 12); \
62 op (predict_##xy, 13); \
63 op (predict_##xy, 14); \
64 op (predict_##xy, 15); \
65 ref += stride; \
66 dest += stride; \
67 } while (--height); \
68 }
69
70#define MC_FUNC_8(op, xy) \
71 void MC_##op##_##xy##_8 (uint8_t * dest, const uint8_t * ref, \
72 const int stride, int height) \
73 { \
74 do { \
75 op (predict_##xy, 0); \
76 op (predict_##xy, 1); \
77 op (predict_##xy, 2); \
78 op (predict_##xy, 3); \
79 op (predict_##xy, 4); \
80 op (predict_##xy, 5); \
81 op (predict_##xy, 6); \
82 op (predict_##xy, 7); \
83 ref += stride; \
84 dest += stride; \
85 } while (--height); \
86 }