| /* |
| * MPEG-1/2 VLC |
| * copyright (c) 2000,2001 Fabrice Bellard |
| * copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
| * |
| * 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 |
| */ |
| |
| /** |
| * @file |
| * MPEG-1/2 VLC. |
| */ |
| |
| #ifndef AVCODEC_MPEG12VLC_H |
| #define AVCODEC_MPEG12VLC_H |
| |
| #include "vlc.h" |
| |
| #define DC_VLC_BITS 9 |
| #define MV_VLC_BITS 8 |
| #define TEX_VLC_BITS 9 |
| |
| #define MBINCR_VLC_BITS 9 |
| #define MB_PAT_VLC_BITS 9 |
| #define MB_PTYPE_VLC_BITS 6 |
| #define MB_BTYPE_VLC_BITS 6 |
| |
| extern VLC ff_dc_lum_vlc; |
| extern VLC ff_dc_chroma_vlc; |
| extern VLC ff_mbincr_vlc; |
| extern VLC ff_mb_ptype_vlc; |
| extern VLC ff_mb_btype_vlc; |
| extern VLC ff_mb_pat_vlc; |
| extern VLC ff_mv_vlc; |
| |
| void ff_mpeg12_init_vlcs(void); |
| |
| #define MPEG12_RL_NB_ELEMS 111 |
| |
| extern const int8_t ff_mpeg12_level[MPEG12_RL_NB_ELEMS]; |
| extern const int8_t ff_mpeg12_run[MPEG12_RL_NB_ELEMS]; |
| |
| extern const uint16_t ff_mpeg1_vlc_table[MPEG12_RL_NB_ELEMS + 2][2]; |
| extern const uint16_t ff_mpeg2_vlc_table[MPEG12_RL_NB_ELEMS + 2][2]; |
| |
| extern RL_VLC_ELEM ff_mpeg1_rl_vlc[]; |
| extern RL_VLC_ELEM ff_mpeg2_rl_vlc[]; |
| |
| void ff_init_2d_vlc_rl(const uint16_t table_vlc[][2], RL_VLC_ELEM rl_vlc[], |
| const int8_t table_run[], const uint8_t table_level[], |
| int n, unsigned static_size, int flags); |
| |
| void ff_mpeg1_init_uni_ac_vlc(const int8_t max_level[], const uint8_t index_run[], |
| const uint16_t table_vlc[][2], uint8_t uni_ac_vlc_len[]); |
| |
| #endif /* AVCODEC_MPEG12VLC_H */ |
