mirror of
https://github.com/FFmpeg/FFmpeg.git
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66 lines
2.2 KiB
C
66 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 "libavutil/common.h"
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#include "avcodec.h"
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#include "get_bits.h"
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#include "put_bits.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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extern DCAVLC ff_dca_vlc_transition_mode;
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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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