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077880ad88
It increases the size of one VLC from two to three bits, thereby requiring four more VLCEntries (16 bytes .bss), but it allows to inline the number of bits used when reading them. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/*
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* DCA compatible decoder - huffman tables
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* Copyright (C) 2004 Gildas Bazin
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* Copyright (C) 2007 Konstantin Shishkov
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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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#ifndef AVCODEC_DCAHUFF_H
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#define AVCODEC_DCAHUFF_H
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#include <stdint.h>
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#include "libavutil/attributes.h"
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#include "put_bits.h"
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#include "vlc.h"
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#define DCA_CODE_BOOKS 10
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#define DCA_BITALLOC_12_COUNT 5
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typedef struct DCAVLC {
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int offset; ///< Code values offset
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int max_depth; ///< Parameter for get_vlc2()
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VLC vlc[7]; ///< Actual codes
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} DCAVLC;
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extern DCAVLC ff_dca_vlc_bit_allocation;
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#define DCA_TMODE_VLC_BITS 3
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extern VLC ff_dca_vlc_transition_mode[4];
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extern DCAVLC ff_dca_vlc_scale_factor;
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extern DCAVLC ff_dca_vlc_quant_index[DCA_CODE_BOOKS];
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extern VLC ff_dca_vlc_tnl_grp[5];
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extern VLC ff_dca_vlc_tnl_scf;
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extern VLC ff_dca_vlc_damp;
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extern VLC ff_dca_vlc_dph;
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extern VLC ff_dca_vlc_fst_rsd_amp;
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extern VLC ff_dca_vlc_rsd_apprx;
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extern VLC ff_dca_vlc_rsd_amp;
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extern VLC ff_dca_vlc_avg_g3;
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extern VLC ff_dca_vlc_st_grid;
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extern VLC ff_dca_vlc_grid_2;
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extern VLC ff_dca_vlc_grid_3;
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extern VLC ff_dca_vlc_rsd;
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av_cold void ff_dca_init_vlcs(void);
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uint32_t ff_dca_vlc_calc_quant_bits(int *values, uint8_t n, uint8_t sel, uint8_t abits);
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void ff_dca_vlc_enc_quant(PutBitContext *pb, int *values, uint8_t n, uint8_t sel, uint8_t abits);
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uint32_t ff_dca_vlc_calc_alloc_bits(int *values, uint8_t n, uint8_t sel);
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void ff_dca_vlc_enc_alloc(PutBitContext *pb, int *values, uint8_t n, uint8_t sel);
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#endif /* AVCODEC_DCAHUFF_H */
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