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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * Header file for hardcoded DV tables |
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| 3 | * |
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| 4 | * Copyright (c) 2010 Reimar Döffinger |
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| 5 | * |
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| 6 | * This file is part of FFmpeg. |
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| 7 | * |
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| 8 | * FFmpeg is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU Lesser General Public |
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| 10 | * License as published by the Free Software Foundation; either |
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| 11 | * version 2.1 of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * FFmpeg is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | * Lesser General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU Lesser General Public |
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| 19 | * License along with FFmpeg; if not, write to the Free Software |
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| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 21 | */ |
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| 22 | |||
| 23 | #ifndef AVCODEC_DV_TABLEGEN_H |
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| 24 | #define AVCODEC_DV_TABLEGEN_H |
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| 25 | |||
| 26 | #include |
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| 27 | |||
| 28 | #include "dv_vlc_data.h" |
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| 29 | |||
| 30 | #if CONFIG_SMALL |
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| 31 | #define DV_VLC_MAP_RUN_SIZE 15 |
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| 32 | #define DV_VLC_MAP_LEV_SIZE 23 |
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| 33 | #else |
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| 34 | #define DV_VLC_MAP_RUN_SIZE 64 |
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| 35 | #define DV_VLC_MAP_LEV_SIZE 512 //FIXME sign was removed so this should be /2 but needs check |
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| 36 | #endif |
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| 37 | |||
| 38 | /* VLC encoding lookup table */ |
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| 39 | typedef struct dv_vlc_pair { |
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| 40 | uint32_t vlc; |
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| 41 | uint32_t size; |
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| 42 | } dv_vlc_pair; |
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| 43 | |||
| 44 | #if CONFIG_HARDCODED_TABLES |
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| 45 | #define dv_vlc_map_tableinit() |
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| 46 | #include "libavcodec/dv_tables.h" |
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| 47 | #else |
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| 48 | static struct dv_vlc_pair dv_vlc_map[DV_VLC_MAP_RUN_SIZE][DV_VLC_MAP_LEV_SIZE]; |
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| 49 | |||
| 50 | static void dv_vlc_map_tableinit(void) |
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| 51 | { |
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| 52 | int i, j; |
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| 53 | for (i = 0; i < NB_DV_VLC - 1; i++) { |
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| 54 | if (dv_vlc_run[i] >= DV_VLC_MAP_RUN_SIZE) |
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| 55 | continue; |
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| 56 | #if CONFIG_SMALL |
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| 57 | if (dv_vlc_level[i] >= DV_VLC_MAP_LEV_SIZE) |
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| 58 | continue; |
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| 59 | #endif |
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| 60 | |||
| 61 | if (dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size != 0) |
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| 62 | continue; |
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| 63 | |||
| 64 | dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].vlc = |
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| 65 | dv_vlc_bits[i] << (!!dv_vlc_level[i]); |
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| 66 | dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size = |
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| 67 | dv_vlc_len[i] + (!!dv_vlc_level[i]); |
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| 68 | } |
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| 69 | for (i = 0; i < DV_VLC_MAP_RUN_SIZE; i++) { |
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| 70 | #if CONFIG_SMALL |
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| 71 | for (j = 1; j < DV_VLC_MAP_LEV_SIZE; j++) { |
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| 72 | if (dv_vlc_map[i][j].size == 0) { |
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| 73 | dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc | |
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| 74 | (dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size)); |
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| 75 | dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size + |
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| 76 | dv_vlc_map[0][j].size; |
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| 77 | } |
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| 78 | } |
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| 79 | #else |
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| 80 | for (j = 1; j < DV_VLC_MAP_LEV_SIZE/2; j++) { |
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| 81 | if (dv_vlc_map[i][j].size == 0) { |
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| 82 | dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc | |
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| 83 | (dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size)); |
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| 84 | dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size + |
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| 85 | dv_vlc_map[0][j].size; |
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| 86 | } |
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| 87 | dv_vlc_map[i][((uint16_t)(-j))&0x1ff].vlc = |
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| 88 | dv_vlc_map[i][j].vlc | 1; |
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| 89 | dv_vlc_map[i][((uint16_t)(-j))&0x1ff].size = |
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| 90 | dv_vlc_map[i][j].size; |
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| 91 | } |
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| 92 | #endif |
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| 93 | } |
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| 94 | } |
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| 95 | #endif /* CONFIG_HARDCODED_TABLES */ |
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| 96 | |||
| 97 | #endif /* AVCODEC_DV_TABLEGEN_H */ |