545 files changed, 230976 insertions, 0 deletions
diff --git a/audio_codec/libfaad/sbr_huff.c b/audio_codec/libfaad/sbr_huff.c new file mode 100644 index 0000000..c7cce59 --- a/dev/null +++ b/audio_codec/libfaad/sbr_huff.c @@ -0,0 +1,344 @@ +/* +** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding +** Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com +** +** This program is free software; you can redistribute it and/or modify +** it under the terms of the GNU General Public License as published by +** the Free Software Foundation; either version 2 of the License, or +** (at your option) any later version. +** +** This program is distributed in the hope that it will be useful, +** but WITHOUT ANY WARRANTY; without even the implied warranty of +** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +** GNU General Public License for more details. +** +** You should have received a copy of the GNU General Public License +** along with this program; if not, write to the Free Software +** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +** +** Any non-GPL usage of this software or parts of this software is strictly +** forbidden. +** +** The "appropriate copyright message" mentioned in section 2c of the GPLv2 +** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com" +** +** Commercial non-GPL licensing of this software is possible. +** For more info contact Nero AG through Mpeg4AAClicense@nero.com. +** +** $Id: sbr_huff.c,v 1.21 2007/11/01 12:33:35 menno Exp $ +**/ + +#include "common.h" +#include "structs.h" + +#ifdef SBR_DEC + +#include "sbr_syntax.h" +#include "bits.h" +#include "sbr_huff.h" +#include "sbr_e_nf.h" + + +typedef const int8_t (*sbr_huff_tab)[2]; + +static const int8_t t_huffman_env_1_5dB[120][2] = { + { 1, 2 }, { -64, -65 }, { 3, 4 }, { -63, -66 }, + { 5, 6 }, { -62, -67 }, { 7, 8 }, { -61, -68 }, + { 9, 10 }, { -60, -69 }, { 11, 12 }, { -59, -70 }, + { 13, 14 }, { -58, -71 }, { 15, 16 }, { -57, -72 }, + { 17, 18 }, { -73, -56 }, { 19, 21 }, { -74, 20 }, + { -55, -75 }, { 22, 26 }, { 23, 24 }, { -54, -76 }, + { -77, 25 }, { -53, -78 }, { 27, 34 }, { 28, 29 }, + { -52, -79 }, { 30, 31 }, { -80, -51 }, { 32, 33 }, + { -83, -82 }, { -81, -50 }, { 35, 57 }, { 36, 40 }, + { 37, 38 }, { -88, -84 }, { -48, 39 }, { -90, -85 }, + { 41, 46 }, { 42, 43 }, { -49, -87 }, { 44, 45 }, + { -89, -86 }, { -124, -123 }, { 47, 50 }, { 48, 49 }, + { -122, -121 }, { -120, -119 }, { 51, 54 }, { 52, 53 }, + { -118, -117 }, { -116, -115 }, { 55, 56 }, { -114, -113 }, + { -112, -111 }, { 58, 89 }, { 59, 74 }, { 60, 67 }, + { 61, 64 }, { 62, 63 }, { -110, -109 }, { -108, -107 }, + { 65, 66 }, { -106, -105 }, { -104, -103 }, { 68, 71 }, + { 69, 70 }, { -102, -101 }, { -100, -99 }, { 72, 73 }, + { -98, -97 }, { -96, -95 }, { 75, 82 }, { 76, 79 }, + { 77, 78 }, { -94, -93 }, { -92, -91 }, { 80, 81 }, + { -47, -46 }, { -45, -44 }, { 83, 86 }, { 84, 85 }, + { -43, -42 }, { -41, -40 }, { 87, 88 }, { -39, -38 }, + { -37, -36 }, { 90, 105 }, { 91, 98 }, { 92, 95 }, + { 93, 94 }, { -35, -34 }, { -33, -32 }, { 96, 97 }, + { -31, -30 }, { -29, -28 }, { 99, 102 }, { 100, 101 }, + { -27, -26 }, { -25, -24 }, { 103, 104 }, { -23, -22 }, + { -21, -20 }, { 106, 113 }, { 107, 110 }, { 108, 109 }, + { -19, -18 }, { -17, -16 }, { 111, 112 }, { -15, -14 }, + { -13, -12 }, { 114, 117 }, { 115, 116 }, { -11, -10 }, + { -9, -8 }, { 118, 119 }, { -7, -6 }, { -5, -4 } +}; + +static const int8_t f_huffman_env_1_5dB[120][2] = { + { 1, 2 }, { -64, -65 }, { 3, 4 }, { -63, -66 }, + { 5, 6 }, { -67, -62 }, { 7, 8 }, { -68, -61 }, + { 9, 10 }, { -69, -60 }, { 11, 13 }, { -70, 12 }, + { -59, -71 }, { 14, 16 }, { -58, 15 }, { -72, -57 }, + { 17, 19 }, { -73, 18 }, { -56, -74 }, { 20, 23 }, + { 21, 22 }, { -55, -75 }, { -54, -53 }, { 24, 27 }, + { 25, 26 }, { -76, -52 }, { -77, -51 }, { 28, 31 }, + { 29, 30 }, { -50, -78 }, { -79, -49 }, { 32, 36 }, + { 33, 34 }, { -48, -47 }, { -80, 35 }, { -81, -82 }, + { 37, 47 }, { 38, 41 }, { 39, 40 }, { -83, -46 }, + { -45, -84 }, { 42, 44 }, { -85, 43 }, { -44, -43 }, + { 45, 46 }, { -88, -87 }, { -86, -90 }, { 48, 66 }, + { 49, 56 }, { 50, 53 }, { 51, 52 }, { -92, -42 }, + { -41, -39 }, { 54, 55 }, { -105, -89 }, { -38, -37 }, + { 57, 60 }, { 58, 59 }, { -94, -91 }, { -40, -36 }, + { 61, 63 }, { -20, 62 }, { -115, -110 }, { 64, 65 }, + { -108, -107 }, { -101, -97 }, { 67, 89 }, { 68, 75 }, + { 69, 72 }, { 70, 71 }, { -95, -93 }, { -34, -27 }, + { 73, 74 }, { -22, -17 }, { -16, -124 }, { 76, 82 }, + { 77, 79 }, { -123, 78 }, { -122, -121 }, { 80, 81 }, + { -120, -119 }, { -118, -117 }, { 83, 86 }, { 84, 85 }, + { -116, -114 }, { -113, -112 }, { 87, 88 }, { -111, -109 }, + { -106, -104 }, { 90, 105 }, { 91, 98 }, { 92, 95 }, + { 93, 94 }, { -103, -102 }, { -100, -99 }, { 96, 97 }, + { -98, -96 }, { -35, -33 }, { 99, 102 }, { 100, 101 }, + { -32, -31 }, { -30, -29 }, { 103, 104 }, { -28, -26 }, + { -25, -24 }, { 106, 113 }, { 107, 110 }, { 108, 109 }, + { -23, -21 }, { -19, -18 }, { 111, 112 }, { -15, -14 }, + { -13, -12 }, { 114, 117 }, { 115, 116 }, { -11, -10 }, + { -9, -8 }, { 118, 119 }, { -7, -6 }, { -5, -4 } +}; + +static const int8_t t_huffman_env_bal_1_5dB[48][2] = { + { -64, 1 }, { -63, 2 }, { -65, 3 }, { -62, 4 }, + { -66, 5 }, { -61, 6 }, { -67, 7 }, { -60, 8 }, + { -68, 9 }, { 10, 11 }, { -69, -59 }, { 12, 13 }, + { -70, -58 }, { 14, 28 }, { 15, 21 }, { 16, 18 }, + { -57, 17 }, { -71, -56 }, { 19, 20 }, { -88, -87 }, + { -86, -85 }, { 22, 25 }, { 23, 24 }, { -84, -83 }, + { -82, -81 }, { 26, 27 }, { -80, -79 }, { -78, -77 }, + { 29, 36 }, { 30, 33 }, { 31, 32 }, { -76, -75 }, + { -74, -73 }, { 34, 35 }, { -72, -55 }, { -54, -53 }, + { 37, 41 }, { 38, 39 }, { -52, -51 }, { -50, 40 }, + { -49, -48 }, { 42, 45 }, { 43, 44 }, { -47, -46 }, + { -45, -44 }, { 46, 47 }, { -43, -42 }, { -41, -40 } +}; + +static const int8_t f_huffman_env_bal_1_5dB[48][2] = { + { -64, 1 }, { -65, 2 }, { -63, 3 }, { -66, 4 }, + { -62, 5 }, { -61, 6 }, { -67, 7 }, { -68, 8 }, + { -60, 9 }, { 10, 11 }, { -69, -59 }, { -70, 12 }, + { -58, 13 }, { 14, 17 }, { -71, 15 }, { -57, 16 }, + { -56, -73 }, { 18, 32 }, { 19, 25 }, { 20, 22 }, + { -72, 21 }, { -88, -87 }, { 23, 24 }, { -86, -85 }, + { -84, -83 }, { 26, 29 }, { 27, 28 }, { -82, -81 }, + { -80, -79 }, { 30, 31 }, { -78, -77 }, { -76, -75 }, + { 33, 40 }, { 34, 37 }, { 35, 36 }, { -74, -55 }, + { -54, -53 }, { 38, 39 }, { -52, -51 }, { -50, -49 }, + { 41, 44 }, { 42, 43 }, { -48, -47 }, { -46, -45 }, + { 45, 46 }, { -44, -43 }, { -42, 47 }, { -41, -40 } +}; + +static const int8_t t_huffman_env_3_0dB[62][2] = { + { -64, 1 }, { -65, 2 }, { -63, 3 }, { -66, 4 }, + { -62, 5 }, { -67, 6 }, { -61, 7 }, { -68, 8 }, + { -60, 9 }, { 10, 11 }, { -69, -59 }, { 12, 14 }, + { -70, 13 }, { -71, -58 }, { 15, 18 }, { 16, 17 }, + { -72, -57 }, { -73, -74 }, { 19, 22 }, { -56, 20 }, + { -55, 21 }, { -54, -77 }, { 23, 31 }, { 24, 25 }, + { -75, -76 }, { 26, 27 }, { -78, -53 }, { 28, 29 }, + { -52, -95 }, { -94, 30 }, { -93, -92 }, { 32, 47 }, + { 33, 40 }, { 34, 37 }, { 35, 36 }, { -91, -90 }, + { -89, -88 }, { 38, 39 }, { -87, -86 }, { -85, -84 }, + { 41, 44 }, { 42, 43 }, { -83, -82 }, { -81, -80 }, + { 45, 46 }, { -79, -51 }, { -50, -49 }, { 48, 55 }, + { 49, 52 }, { 50, 51 }, { -48, -47 }, { -46, -45 }, + { 53, 54 }, { -44, -43 }, { -42, -41 }, { 56, 59 }, + { 57, 58 }, { -40, -39 }, { -38, -37 }, { 60, 61 }, + { -36, -35 }, { -34, -33 } +}; + +static const int8_t f_huffman_env_3_0dB[62][2] = { + { -64, 1 }, { -65, 2 }, { -63, 3 }, { -66, 4 }, + { -62, 5 }, { -67, 6 }, { 7, 8 }, { -61, -68 }, + { 9, 10 }, { -60, -69 }, { 11, 12 }, { -59, -70 }, + { 13, 14 }, { -58, -71 }, { 15, 16 }, { -57, -72 }, + { 17, 19 }, { -56, 18 }, { -55, -73 }, { 20, 24 }, + { 21, 22 }, { -74, -54 }, { -53, 23 }, { -75, -76 }, + { 25, 30 }, { 26, 27 }, { -52, -51 }, { 28, 29 }, + { -77, -79 }, { -50, -49 }, { 31, 39 }, { 32, 35 }, + { 33, 34 }, { -78, -46 }, { -82, -88 }, { 36, 37 }, + { -83, -48 }, { -47, 38 }, { -86, -85 }, { 40, 47 }, + { 41, 44 }, { 42, 43 }, { -80, -44 }, { -43, -42 }, + { 45, 46 }, { -39, -87 }, { -84, -40 }, { 48, 55 }, + { 49, 52 }, { 50, 51 }, { -95, -94 }, { -93, -92 }, + { 53, 54 }, { -91, -90 }, { -89, -81 }, { 56, 59 }, + { 57, 58 }, { -45, -41 }, { -38, -37 }, { 60, 61 }, + { -36, -35 }, { -34, -33 } +}; + +static const int8_t t_huffman_env_bal_3_0dB[24][2] = { + { -64, 1 }, { -63, 2 }, { -65, 3 }, { -66, 4 }, + { -62, 5 }, { -61, 6 }, { -67, 7 }, { -68, 8 }, + { -60, 9 }, { 10, 16 }, { 11, 13 }, { -69, 12 }, + { -76, -75 }, { 14, 15 }, { -74, -73 }, { -72, -71 }, + { 17, 20 }, { 18, 19 }, { -70, -59 }, { -58, -57 }, + { 21, 22 }, { -56, -55 }, { -54, 23 }, { -53, -52 } +}; + +static const int8_t f_huffman_env_bal_3_0dB[24][2] = { + { -64, 1 }, { -65, 2 }, { -63, 3 }, { -66, 4 }, + { -62, 5 }, { -61, 6 }, { -67, 7 }, { -68, 8 }, + { -60, 9 }, { 10, 13 }, { -69, 11 }, { -59, 12 }, + { -58, -76 }, { 14, 17 }, { 15, 16 }, { -75, -74 }, + { -73, -72 }, { 18, 21 }, { 19, 20 }, { -71, -70 }, + { -57, -56 }, { 22, 23 }, { -55, -54 }, { -53, -52 } +}; + +static const int8_t t_huffman_noise_3_0dB[62][2] = { + { -64, 1 }, { -63, 2 }, { -65, 3 }, { -66, 4 }, + { -62, 5 }, { -67, 6 }, { 7, 8 }, { -61, -68 }, + { 9, 30 }, { 10, 15 }, { -60, 11 }, { -69, 12 }, + { 13, 14 }, { -59, -53 }, { -95, -94 }, { 16, 23 }, + { 17, 20 }, { 18, 19 }, { -93, -92 }, { -91, -90 }, + { 21, 22 }, { -89, -88 }, { -87, -86 }, { 24, 27 }, + { 25, 26 }, { -85, -84 }, { -83, -82 }, { 28, 29 }, + { -81, -80 }, { -79, -78 }, { 31, 46 }, { 32, 39 }, + { 33, 36 }, { 34, 35 }, { -77, -76 }, { -75, -74 }, + { 37, 38 }, { -73, -72 }, { -71, -70 }, { 40, 43 }, + { 41, 42 }, { -58, -57 }, { -56, -55 }, { 44, 45 }, + { -54, -52 }, { -51, -50 }, { 47, 54 }, { 48, 51 }, + { 49, 50 }, { -49, -48 }, { -47, -46 }, { 52, 53 }, + { -45, -44 }, { -43, -42 }, { 55, 58 }, { 56, 57 }, + { -41, -40 }, { -39, -38 }, { 59, 60 }, { -37, -36 }, + { -35, 61 }, { -34, -33 } +}; + +static const int8_t t_huffman_noise_bal_3_0dB[24][2] = { + { -64, 1 }, { -65, 2 }, { -63, 3 }, { 4, 9 }, + { -66, 5 }, { -62, 6 }, { 7, 8 }, { -76, -75 }, + { -74, -73 }, { 10, 17 }, { 11, 14 }, { 12, 13 }, + { -72, -71 }, { -70, -69 }, { 15, 16 }, { -68, -67 }, + { -61, -60 }, { 18, 21 }, { 19, 20 }, { -59, -58 }, + { -57, -56 }, { 22, 23 }, { -55, -54 }, { -53, -52 } +}; + + +static INLINE int16_t sbr_huff_dec(bitfile *ld, sbr_huff_tab t_huff) +{ + uint8_t bit; + int16_t index = 0; + + while (index >= 0) { + bit = (uint8_t)faad_get1bit(ld); + index = t_huff[index][bit]; + } + + return index + 64; +} + +/* table 10 */ +void sbr_envelope(bitfile *ld, sbr_info *sbr, uint8_t ch) +{ + uint8_t env, band; + int8_t delta = 0; + sbr_huff_tab t_huff, f_huff; + + if ((sbr->L_E[ch] == 1) && (sbr->bs_frame_class[ch] == FIXFIX)) { + sbr->amp_res[ch] = 0; + } else { + sbr->amp_res[ch] = sbr->bs_amp_res; + } + + if ((sbr->bs_coupling) && (ch == 1)) { + delta = 1; + if (sbr->amp_res[ch]) { + t_huff = t_huffman_env_bal_3_0dB; + f_huff = f_huffman_env_bal_3_0dB; + } else { + t_huff = t_huffman_env_bal_1_5dB; + f_huff = f_huffman_env_bal_1_5dB; + } + } else { + delta = 0; + if (sbr->amp_res[ch]) { + t_huff = t_huffman_env_3_0dB; + f_huff = f_huffman_env_3_0dB; + } else { + t_huff = t_huffman_env_1_5dB; + f_huff = f_huffman_env_1_5dB; + } + } + + for (env = 0; env < sbr->L_E[ch]; env++) { + if (sbr->bs_df_env[ch][env] == 0) { + if ((sbr->bs_coupling == 1) && (ch == 1)) { + if (sbr->amp_res[ch]) { + sbr->E[ch][0][env] = (uint16_t)(faad_getbits(ld, 5 + DEBUGVAR(1, 272, "sbr_envelope(): bs_data_env")) << delta); + } else { + sbr->E[ch][0][env] = (uint16_t)(faad_getbits(ld, 6 + DEBUGVAR(1, 273, "sbr_envelope(): bs_data_env")) << delta); + } + } else { + if (sbr->amp_res[ch]) { + sbr->E[ch][0][env] = (uint16_t)(faad_getbits(ld, 6 + DEBUGVAR(1, 274, "sbr_envelope(): bs_data_env")) << delta); + } else { + sbr->E[ch][0][env] = (uint16_t)(faad_getbits(ld, 7 + DEBUGVAR(1, 275, "sbr_envelope(): bs_data_env")) << delta); + } + } + + for (band = 1; band < sbr->n[sbr->f[ch][env]]; band++) { + sbr->E[ch][band][env] = (sbr_huff_dec(ld, f_huff) << delta); + } + + } else { + for (band = 0; band < sbr->n[sbr->f[ch][env]]; band++) { + sbr->E[ch][band][env] = (sbr_huff_dec(ld, t_huff) << delta); + } + } + } + + extract_envelope_data(sbr, ch); +} + +/* table 11 */ +void sbr_noise(bitfile *ld, sbr_info *sbr, uint8_t ch) +{ + uint8_t noise, band; + int8_t delta = 0; + sbr_huff_tab t_huff, f_huff; + + if ((sbr->bs_coupling == 1) && (ch == 1)) { + delta = 1; + t_huff = t_huffman_noise_bal_3_0dB; + f_huff = f_huffman_env_bal_3_0dB; + } else { + delta = 0; + t_huff = t_huffman_noise_3_0dB; + f_huff = f_huffman_env_3_0dB; + } + + for (noise = 0; noise < sbr->L_Q[ch]; noise++) { + if (sbr->bs_df_noise[ch][noise] == 0) { + if ((sbr->bs_coupling == 1) && (ch == 1)) { + sbr->Q[ch][0][noise] = (faad_getbits(ld, 5 + DEBUGVAR(1, 276, "sbr_noise(): bs_data_noise")) << delta); + } else { + sbr->Q[ch][0][noise] = (faad_getbits(ld, 5 + DEBUGVAR(1, 277, "sbr_noise(): bs_data_noise")) << delta); + } + for (band = 1; band < sbr->N_Q; band++) { + sbr->Q[ch][band][noise] = (sbr_huff_dec(ld, f_huff) << delta); + } + } else { + for (band = 0; band < sbr->N_Q; band++) { + sbr->Q[ch][band][noise] = (sbr_huff_dec(ld, t_huff) << delta); + } + } + } + + extract_noise_floor_data(sbr, ch); +} + +#endif |