2 * Header file for hardcoded DV tables
4 * Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
6 * This file is part of Libav.
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.
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.
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
23 #ifndef AVCODEC_DV_TABLEGEN_H
24 #define AVCODEC_DV_TABLEGEN_H
27 #include "dv_vlc_data.h"
30 #define DV_VLC_MAP_RUN_SIZE 15
31 #define DV_VLC_MAP_LEV_SIZE 23
33 #define DV_VLC_MAP_RUN_SIZE 64
34 #define DV_VLC_MAP_LEV_SIZE 512 //FIXME sign was removed so this should be /2 but needs check
37 /* VLC encoding lookup table */
38 typedef struct dv_vlc_pair {
43 #if CONFIG_HARDCODED_TABLES
44 #define dv_vlc_map_tableinit()
45 #include "libavcodec/dv_tables.h"
47 static struct dv_vlc_pair dv_vlc_map[DV_VLC_MAP_RUN_SIZE][DV_VLC_MAP_LEV_SIZE];
49 static void dv_vlc_map_tableinit(void)
52 for (i = 0; i < NB_DV_VLC - 1; i++) {
53 if (dv_vlc_run[i] >= DV_VLC_MAP_RUN_SIZE)
56 if (dv_vlc_level[i] >= DV_VLC_MAP_LEV_SIZE)
60 if (dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size != 0)
63 dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].vlc =
64 dv_vlc_bits[i] << (!!dv_vlc_level[i]);
65 dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size =
66 dv_vlc_len[i] + (!!dv_vlc_level[i]);
68 for (i = 0; i < DV_VLC_MAP_RUN_SIZE; i++) {
70 for (j = 1; j < DV_VLC_MAP_LEV_SIZE; j++) {
71 if (dv_vlc_map[i][j].size == 0) {
72 dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
73 (dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size));
74 dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
75 dv_vlc_map[0][j].size;
79 for (j = 1; j < DV_VLC_MAP_LEV_SIZE/2; j++) {
80 if (dv_vlc_map[i][j].size == 0) {
81 dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
82 (dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size));
83 dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
84 dv_vlc_map[0][j].size;
86 dv_vlc_map[i][((uint16_t)(-j))&0x1ff].vlc =
87 dv_vlc_map[i][j].vlc | 1;
88 dv_vlc_map[i][((uint16_t)(-j))&0x1ff].size =
89 dv_vlc_map[i][j].size;
94 #endif /* CONFIG_HARDCODED_TABLES */
96 #endif /* AVCODEC_DV_TABLEGEN_H */