| /* |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef AVCODEC_VLC_H |
| #define AVCODEC_VLC_H |
| |
| #include <stdint.h> |
| |
| #define VLC_TYPE int16_t |
| |
| typedef struct VLC { |
| int bits; |
| VLC_TYPE (*table)[2]; ///< code, bits |
| int table_size, table_allocated; |
| } VLC; |
| |
| typedef struct RL_VLC_ELEM { |
| int16_t level; |
| int8_t len; |
| uint8_t run; |
| } RL_VLC_ELEM; |
| |
| #define init_vlc(vlc, nb_bits, nb_codes, \ |
| bits, bits_wrap, bits_size, \ |
| codes, codes_wrap, codes_size, \ |
| flags) \ |
| ff_init_vlc_sparse(vlc, nb_bits, nb_codes, \ |
| bits, bits_wrap, bits_size, \ |
| codes, codes_wrap, codes_size, \ |
| NULL, 0, 0, flags) |
| |
| int ff_init_vlc_sparse(VLC *vlc, int nb_bits, int nb_codes, |
| const void *bits, int bits_wrap, int bits_size, |
| const void *codes, int codes_wrap, int codes_size, |
| const void *symbols, int symbols_wrap, int symbols_size, |
| int flags); |
| void ff_free_vlc(VLC *vlc); |
| |
| #define INIT_VLC_LE 2 |
| #define INIT_VLC_USE_NEW_STATIC 4 |
| |
| #define INIT_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size) \ |
| do { \ |
| static VLC_TYPE table[static_size][2]; \ |
| (vlc)->table = table; \ |
| (vlc)->table_allocated = static_size; \ |
| init_vlc(vlc, bits, a, b, c, d, e, f, g, INIT_VLC_USE_NEW_STATIC); \ |
| } while (0) |
| |
| #endif /* AVCODEC_VLC_H */ |