blob: 02b0e375aeb37a4f0d343535b0d8730a7cdd9f60
| 1 | /* |
| 2 | * DCA compatible decoder - huffman tables |
| 3 | * Copyright (C) 2004 Gildas Bazin |
| 4 | * Copyright (C) 2007 Konstantin Shishkov |
| 5 | * |
| 6 | * This file is part of FFmpeg. |
| 7 | * |
| 8 | * FFmpeg is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2.1 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * FFmpeg is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with FFmpeg; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #ifndef AVCODEC_DCAHUFF_H |
| 24 | #define AVCODEC_DCAHUFF_H |
| 25 | |
| 26 | #include "libavutil/common.h" |
| 27 | |
| 28 | #include "avcodec.h" |
| 29 | #include "get_bits.h" |
| 30 | #include "put_bits.h" |
| 31 | |
| 32 | #define DCA_CODE_BOOKS 10 |
| 33 | #define DCA_BITALLOC_12_COUNT 5 |
| 34 | |
| 35 | typedef struct DCAVLC { |
| 36 | int offset; ///< Code values offset |
| 37 | int max_depth; ///< Parameter for get_vlc2() |
| 38 | VLC vlc[7]; ///< Actual codes |
| 39 | } DCAVLC; |
| 40 | |
| 41 | extern DCAVLC ff_dca_vlc_bit_allocation; |
| 42 | extern DCAVLC ff_dca_vlc_transition_mode; |
| 43 | extern DCAVLC ff_dca_vlc_scale_factor; |
| 44 | extern DCAVLC ff_dca_vlc_quant_index[DCA_CODE_BOOKS]; |
| 45 | |
| 46 | extern VLC ff_dca_vlc_tnl_grp[5]; |
| 47 | extern VLC ff_dca_vlc_tnl_scf; |
| 48 | extern VLC ff_dca_vlc_damp; |
| 49 | extern VLC ff_dca_vlc_dph; |
| 50 | extern VLC ff_dca_vlc_fst_rsd_amp; |
| 51 | extern VLC ff_dca_vlc_rsd_apprx; |
| 52 | extern VLC ff_dca_vlc_rsd_amp; |
| 53 | extern VLC ff_dca_vlc_avg_g3; |
| 54 | extern VLC ff_dca_vlc_st_grid; |
| 55 | extern VLC ff_dca_vlc_grid_2; |
| 56 | extern VLC ff_dca_vlc_grid_3; |
| 57 | extern VLC ff_dca_vlc_rsd; |
| 58 | |
| 59 | av_cold void ff_dca_init_vlcs(void); |
| 60 | uint32_t ff_dca_vlc_calc_quant_bits(int *values, uint8_t n, uint8_t sel, uint8_t abits); |
| 61 | void ff_dca_vlc_enc_quant(PutBitContext *pb, int *values, uint8_t n, uint8_t sel, uint8_t abits); |
| 62 | uint32_t ff_dca_vlc_calc_alloc_bits(int *values, uint8_t n, uint8_t sel); |
| 63 | void ff_dca_vlc_enc_alloc(PutBitContext *pb, int *values, uint8_t n, uint8_t sel); |
| 64 | |
| 65 | #endif /* AVCODEC_DCAHUFF_H */ |
| 66 |