/* * 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_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, h, i, j, static_size) \ do { \ static VLC_TYPE table[static_size][2]; \ (vlc)->table = table; \ (vlc)->table_allocated = static_size; \ ff_init_vlc_sparse(vlc, bits, a, b, c, d, e, f, g, h, i, j, \ INIT_VLC_USE_NEW_STATIC); \ } while (0) #define INIT_LE_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, h, i, j, static_size) \ do { \ static VLC_TYPE table[static_size][2]; \ (vlc)->table = table; \ (vlc)->table_allocated = static_size; \ ff_init_vlc_sparse(vlc, bits, a, b, c, d, e, f, g, h, i, j, \ INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); \ } while (0) #define INIT_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size) \ INIT_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, NULL, 0, 0, static_size) #define INIT_LE_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size) \ INIT_LE_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, NULL, 0, 0, static_size) #endif /* AVCODEC_VLC_H */