1d5d666601
Up until now, both the msmpeg4 decoders and encoders initialized several RLTables common to them (the decoders also initialized the VLCs of these RLTables). This is an obstacle to making these codecs init-threadsafe. So move this initialization to ff_msmpeg4_common_init() that already contains this initialization code. This allows to reuse the AVOnce used for initializing ff_v2_dc_lum/chroma_table which automatically makes initializing these RLTables thread-safe. Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/*
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* MSMPEG4 backend for encoder and decoder
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* copyright (c) 2001 Fabrice Bellard
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* copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
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*
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* msmpeg4v1 & v2 stuff by 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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* MSMPEG4 data tables.
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*/
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#ifndef AVCODEC_MSMPEG4DATA_H
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#define AVCODEC_MSMPEG4DATA_H
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#include "libavutil/common.h"
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#include "rl.h"
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#include "vlc.h"
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/* motion vector table */
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typedef struct MVTable {
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const uint16_t *table_mv_code;
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const uint8_t *table_mv_bits;
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const uint8_t *table_mvx;
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const uint8_t *table_mvy;
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uint16_t *table_mv_index; /* encoding: convert mv to index in table_mv */
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VLC vlc; /* decoding: vlc */
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} MVTable;
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extern VLC ff_msmp4_mb_i_vlc;
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extern VLC ff_msmp4_dc_luma_vlc[2];
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extern VLC ff_msmp4_dc_chroma_vlc[2];
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/* intra picture macroblock coded block pattern */
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extern const uint16_t ff_msmp4_mb_i_table[64][2];
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#define WMV1_SCANTABLE_COUNT 4
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extern const uint8_t ff_wmv1_scantable[WMV1_SCANTABLE_COUNT][64];
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#define NB_RL_TABLES 6
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extern RLTable ff_rl_table[NB_RL_TABLES];
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extern uint32_t ff_v2_dc_lum_table[512][2];
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extern uint32_t ff_v2_dc_chroma_table[512][2];
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extern const uint8_t ff_wmv1_y_dc_scale_table[32];
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extern const uint8_t ff_wmv1_c_dc_scale_table[32];
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extern const uint8_t ff_old_ff_y_dc_scale_table[32];
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#define MSMPEG4_MV_TABLES_NB_ELEMS 1099
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extern MVTable ff_mv_tables[2];
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extern const uint8_t ff_v2_mb_type[8][2];
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extern const uint8_t ff_v2_intra_cbpc[4][2];
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extern const uint32_t ff_table_mb_non_intra[128][2];
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extern const uint8_t ff_table_inter_intra[4][2];
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extern const uint32_t ff_table0_dc_lum[120][2];
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extern const uint32_t ff_table1_dc_lum[120][2];
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extern const uint32_t ff_table0_dc_chroma[120][2];
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extern const uint32_t ff_table1_dc_chroma[120][2];
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#define WMV2_INTER_CBP_TABLE_COUNT 4
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extern const uint32_t (* const ff_wmv2_inter_table[WMV2_INTER_CBP_TABLE_COUNT])[2];
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#endif /* AVCODEC_MSMPEG4DATA_H */
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