dv: K&R formatting cosmetics
[libav.git] / libavcodec / dv_tablegen.h
1 /*
2 * Header file for hardcoded DV tables
3 *
4 * Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
5 *
6 * This file is part of Libav.
7 *
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #ifndef AVCODEC_DV_TABLEGEN_H
24 #define AVCODEC_DV_TABLEGEN_H
25
26 #include <stdint.h>
27
28 #include "dvdata.h"
29
30 #if CONFIG_SMALL
31 #define DV_VLC_MAP_RUN_SIZE 15
32 #define DV_VLC_MAP_LEV_SIZE 23
33 #else
34 #define DV_VLC_MAP_RUN_SIZE 64
35 #define DV_VLC_MAP_LEV_SIZE 512 // FIXME sign was removed so this should be /2 but needs check
36 #endif
37
38 /* VLC encoding lookup table */
39 typedef struct dv_vlc_pair {
40 uint32_t vlc;
41 uint32_t size;
42 } dv_vlc_pair;
43
44 #if CONFIG_HARDCODED_TABLES
45 #define dv_vlc_map_tableinit()
46 #include "libavcodec/dv_tables.h"
47 #else
48 static struct dv_vlc_pair dv_vlc_map[DV_VLC_MAP_RUN_SIZE][DV_VLC_MAP_LEV_SIZE];
49
50 static void dv_vlc_map_tableinit(void)
51 {
52 int i, j;
53 for (i = 0; i < NB_DV_VLC - 1; i++) {
54 if (ff_dv_vlc_run[i] >= DV_VLC_MAP_RUN_SIZE)
55 continue;
56 #if CONFIG_SMALL
57 if (ff_dv_vlc_level[i] >= DV_VLC_MAP_LEV_SIZE)
58 continue;
59 #endif
60
61 if (dv_vlc_map[ff_dv_vlc_run[i]][ff_dv_vlc_level[i]].size != 0)
62 continue;
63
64 dv_vlc_map[ff_dv_vlc_run[i]][ff_dv_vlc_level[i]].vlc =
65 ff_dv_vlc_bits[i] << (!!ff_dv_vlc_level[i]);
66 dv_vlc_map[ff_dv_vlc_run[i]][ff_dv_vlc_level[i]].size =
67 ff_dv_vlc_len[i] + (!!ff_dv_vlc_level[i]);
68 }
69 for (i = 0; i < DV_VLC_MAP_RUN_SIZE; i++) {
70 #if CONFIG_SMALL
71 for (j = 1; j < DV_VLC_MAP_LEV_SIZE; j++) {
72 if (dv_vlc_map[i][j].size == 0) {
73 dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
74 (dv_vlc_map[i - 1][0].vlc <<
75 dv_vlc_map[0][j].size);
76 dv_vlc_map[i][j].size = dv_vlc_map[i - 1][0].size +
77 dv_vlc_map[0][j].size;
78 }
79 }
80 #else
81 for (j = 1; j < DV_VLC_MAP_LEV_SIZE / 2; j++) {
82 if (dv_vlc_map[i][j].size == 0) {
83 dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
84 (dv_vlc_map[i - 1][0].vlc <<
85 dv_vlc_map[0][j].size);
86 dv_vlc_map[i][j].size = dv_vlc_map[i - 1][0].size +
87 dv_vlc_map[0][j].size;
88 }
89 dv_vlc_map[i][((uint16_t) (-j)) & 0x1ff].vlc = dv_vlc_map[i][j].vlc | 1;
90 dv_vlc_map[i][((uint16_t) (-j)) & 0x1ff].size = dv_vlc_map[i][j].size;
91 }
92 #endif
93 }
94 }
95 #endif /* CONFIG_HARDCODED_TABLES */
96
97 #endif /* AVCODEC_DV_TABLEGEN_H */