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https://github.com/FFmpeg/FFmpeg.git
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7e2120c4d9
Everything besides VLC.table is basically write-only and even VLC.table can be removed by accessing the underlying tables directly. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
/*
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* MPEG-1/2 VLC
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* copyright (c) 2000,2001 Fabrice Bellard
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* copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* MPEG-1/2 VLC.
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*/
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#ifndef AVCODEC_MPEG12VLC_H
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#define AVCODEC_MPEG12VLC_H
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#include "vlc.h"
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#define DC_VLC_BITS 9
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#define MV_VLC_BITS 8
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#define TEX_VLC_BITS 9
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#define MBINCR_VLC_BITS 9
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#define MB_PAT_VLC_BITS 9
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#define MB_PTYPE_VLC_BITS 6
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#define MB_BTYPE_VLC_BITS 6
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extern VLCElem ff_dc_lum_vlc[];
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extern VLCElem ff_dc_chroma_vlc[];
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extern VLCElem ff_mbincr_vlc[];
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extern VLCElem ff_mb_ptype_vlc[];
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extern VLCElem ff_mb_btype_vlc[];
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extern VLCElem ff_mb_pat_vlc[];
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extern VLCElem ff_mv_vlc[];
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void ff_mpeg12_init_vlcs(void);
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#define MPEG12_RL_NB_ELEMS 111
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extern const int8_t ff_mpeg12_level[MPEG12_RL_NB_ELEMS];
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extern const int8_t ff_mpeg12_run[MPEG12_RL_NB_ELEMS];
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extern const uint16_t ff_mpeg1_vlc_table[MPEG12_RL_NB_ELEMS + 2][2];
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extern const uint16_t ff_mpeg2_vlc_table[MPEG12_RL_NB_ELEMS + 2][2];
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extern RL_VLC_ELEM ff_mpeg1_rl_vlc[];
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extern RL_VLC_ELEM ff_mpeg2_rl_vlc[];
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void ff_init_2d_vlc_rl(const uint16_t table_vlc[][2], RL_VLC_ELEM rl_vlc[],
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const int8_t table_run[], const uint8_t table_level[],
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int n, unsigned static_size, int flags);
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void ff_mpeg1_init_uni_ac_vlc(const int8_t max_level[], const uint8_t index_run[],
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const uint16_t table_vlc[][2], uint8_t uni_ac_vlc_len[]);
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#endif /* AVCODEC_MPEG12VLC_H */
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