X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fac3tab.h;h=a46e29d3c589ed496d48fa436023af491bab3d73;hb=987903826b0dba2e134be200ac94be66b4a3acf1;hp=65345deb46eb65b531a21f337229827987195a22;hpb=0c1a9edad463bd6e22b30c19b700b099c7093fc1;p=ffmpeg diff --git a/libavcodec/ac3tab.h b/libavcodec/ac3tab.h index 65345deb46e..a46e29d3c58 100644 --- a/libavcodec/ac3tab.h +++ b/libavcodec/ac3tab.h @@ -1,183 +1,59 @@ -/* tables taken directly from AC3 spec */ - -/* possible frequencies */ -const uint16_t ac3_freqs[3] = { 48000, 44100, 32000 }; - -/* possible bitrates */ -const uint16_t ac3_bitratetab[19] = { - 32, 40, 48, 56, 64, 80, 96, 112, 128, - 160, 192, 224, 256, 320, 384, 448, 512, 576, 640 -}; - -/* AC3 MDCT window */ - -/* MDCT window */ -const int16_t ac3_window[256] = { - 4, 7, 12, 16, 21, 28, 34, 42, - 51, 61, 72, 84, 97, 111, 127, 145, - 164, 184, 207, 231, 257, 285, 315, 347, - 382, 419, 458, 500, 544, 591, 641, 694, - 750, 810, 872, 937, 1007, 1079, 1155, 1235, - 1318, 1406, 1497, 1593, 1692, 1796, 1903, 2016, - 2132, 2253, 2379, 2509, 2644, 2783, 2927, 3076, - 3230, 3389, 3552, 3721, 3894, 4072, 4255, 4444, - 4637, 4835, 5038, 5246, 5459, 5677, 5899, 6127, - 6359, 6596, 6837, 7083, 7334, 7589, 7848, 8112, - 8380, 8652, 8927, 9207, 9491, 9778,10069,10363, -10660,10960,11264,11570,11879,12190,12504,12820, -13138,13458,13780,14103,14427,14753,15079,15407, -15735,16063,16392,16720,17049,17377,17705,18032, -18358,18683,19007,19330,19651,19970,20287,20602, -20914,21225,21532,21837,22139,22438,22733,23025, -23314,23599,23880,24157,24430,24699,24964,25225, -25481,25732,25979,26221,26459,26691,26919,27142, -27359,27572,27780,27983,28180,28373,28560,28742, -28919,29091,29258,29420,29577,29729,29876,30018, -30155,30288,30415,30538,30657,30771,30880,30985, -31086,31182,31274,31363,31447,31528,31605,31678, -31747,31814,31877,31936,31993,32046,32097,32145, -32190,32232,32272,32310,32345,32378,32409,32438, -32465,32490,32513,32535,32556,32574,32592,32608, -32623,32636,32649,32661,32671,32681,32690,32698, -32705,32712,32718,32724,32729,32733,32737,32741, -32744,32747,32750,32752,32754,32756,32757,32759, -32760,32761,32762,32763,32764,32764,32765,32765, -32766,32766,32766,32766,32767,32767,32767,32767, -32767,32767,32767,32767,32767,32767,32767,32767, -32767,32767,32767,32767,32767,32767,32767,32767, -}; - -static uint8_t masktab[253]; - -static const uint8_t latab[260]= { -0x0040,0x003f,0x003e,0x003d,0x003c,0x003b,0x003a,0x0039,0x0038,0x0037, -0x0036,0x0035,0x0034,0x0034,0x0033,0x0032,0x0031,0x0030,0x002f,0x002f, -0x002e,0x002d,0x002c,0x002c,0x002b,0x002a,0x0029,0x0029,0x0028,0x0027, -0x0026,0x0026,0x0025,0x0024,0x0024,0x0023,0x0023,0x0022,0x0021,0x0021, -0x0020,0x0020,0x001f,0x001e,0x001e,0x001d,0x001d,0x001c,0x001c,0x001b, -0x001b,0x001a,0x001a,0x0019,0x0019,0x0018,0x0018,0x0017,0x0017,0x0016, -0x0016,0x0015,0x0015,0x0015,0x0014,0x0014,0x0013,0x0013,0x0013,0x0012, -0x0012,0x0012,0x0011,0x0011,0x0011,0x0010,0x0010,0x0010,0x000f,0x000f, -0x000f,0x000e,0x000e,0x000e,0x000d,0x000d,0x000d,0x000d,0x000c,0x000c, -0x000c,0x000c,0x000b,0x000b,0x000b,0x000b,0x000a,0x000a,0x000a,0x000a, -0x000a,0x0009,0x0009,0x0009,0x0009,0x0009,0x0008,0x0008,0x0008,0x0008, -0x0008,0x0008,0x0007,0x0007,0x0007,0x0007,0x0007,0x0007,0x0006,0x0006, -0x0006,0x0006,0x0006,0x0006,0x0006,0x0006,0x0005,0x0005,0x0005,0x0005, -0x0005,0x0005,0x0005,0x0005,0x0004,0x0004,0x0004,0x0004,0x0004,0x0004, -0x0004,0x0004,0x0004,0x0004,0x0004,0x0003,0x0003,0x0003,0x0003,0x0003, -0x0003,0x0003,0x0003,0x0003,0x0003,0x0003,0x0003,0x0003,0x0003,0x0002, -0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002, -0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0002,0x0001,0x0001, -0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001, -0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001, -0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001,0x0001, -0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, -0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, -0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, -0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, -0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000,0x0000, -}; - -static const uint16_t hth[50][3]= { -{ 0x04d0,0x04f0,0x0580 }, -{ 0x04d0,0x04f0,0x0580 }, -{ 0x0440,0x0460,0x04b0 }, -{ 0x0400,0x0410,0x0450 }, -{ 0x03e0,0x03e0,0x0420 }, -{ 0x03c0,0x03d0,0x03f0 }, -{ 0x03b0,0x03c0,0x03e0 }, -{ 0x03b0,0x03b0,0x03d0 }, -{ 0x03a0,0x03b0,0x03c0 }, -{ 0x03a0,0x03a0,0x03b0 }, -{ 0x03a0,0x03a0,0x03b0 }, -{ 0x03a0,0x03a0,0x03b0 }, -{ 0x03a0,0x03a0,0x03a0 }, -{ 0x0390,0x03a0,0x03a0 }, -{ 0x0390,0x0390,0x03a0 }, -{ 0x0390,0x0390,0x03a0 }, -{ 0x0380,0x0390,0x03a0 }, -{ 0x0380,0x0380,0x03a0 }, -{ 0x0370,0x0380,0x03a0 }, -{ 0x0370,0x0380,0x03a0 }, -{ 0x0360,0x0370,0x0390 }, -{ 0x0360,0x0370,0x0390 }, -{ 0x0350,0x0360,0x0390 }, -{ 0x0350,0x0360,0x0390 }, -{ 0x0340,0x0350,0x0380 }, -{ 0x0340,0x0350,0x0380 }, -{ 0x0330,0x0340,0x0380 }, -{ 0x0320,0x0340,0x0370 }, -{ 0x0310,0x0320,0x0360 }, -{ 0x0300,0x0310,0x0350 }, -{ 0x02f0,0x0300,0x0340 }, -{ 0x02f0,0x02f0,0x0330 }, -{ 0x02f0,0x02f0,0x0320 }, -{ 0x02f0,0x02f0,0x0310 }, -{ 0x0300,0x02f0,0x0300 }, -{ 0x0310,0x0300,0x02f0 }, -{ 0x0340,0x0320,0x02f0 }, -{ 0x0390,0x0350,0x02f0 }, -{ 0x03e0,0x0390,0x0300 }, -{ 0x0420,0x03e0,0x0310 }, -{ 0x0460,0x0420,0x0330 }, -{ 0x0490,0x0450,0x0350 }, -{ 0x04a0,0x04a0,0x03c0 }, -{ 0x0460,0x0490,0x0410 }, -{ 0x0440,0x0460,0x0470 }, -{ 0x0440,0x0440,0x04a0 }, -{ 0x0520,0x0480,0x0460 }, -{ 0x0800,0x0630,0x0440 }, -{ 0x0840,0x0840,0x0450 }, -{ 0x0840,0x0840,0x04e0 }, -}; - -static const uint8_t baptab[64]= { - 0, 1, 1, 1, 1, 1, 2, 2, 3, 3, - 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, - 7, 7, 7, 8, 8, 8, 8, 9, 9, 9, - 9, 10, 10, 10, 10, 11, 11, 11, 11, 12, - 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, - 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, - 15, 15, 15, 15, -}; - -const uint8_t sdecaytab[4]={ - 0x0f, 0x11, 0x13, 0x15, -}; - -const uint8_t fdecaytab[4]={ - 0x3f, 0x53, 0x67, 0x7b, -}; - -const uint16_t sgaintab[4]= { - 0x540, 0x4d8, 0x478, 0x410, -}; - -const uint16_t dbkneetab[4]= { - 0x000, 0x700, 0x900, 0xb00, -}; - -const uint16_t floortab[8]= { - 0x2f0, 0x2b0, 0x270, 0x230, 0x1f0, 0x170, 0x0f0, 0xf800, -}; - -const uint16_t fgaintab[8]= { - 0x080, 0x100, 0x180, 0x200, 0x280, 0x300, 0x380, 0x400, -}; - -static const uint8_t bndsz[50]={ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 3, 3, 3, 3, - 3, 6, 6, 6, 6, 6, 6, 12, 12, 12, 12, 24, 24, 24, 24, 24 -}; - -static uint8_t bndtab[51]; - -/* fft & mdct sin cos tables */ -static int16_t costab[64]; -static int16_t sintab[64]; -static int16_t fft_rev[512]; -static int16_t xcos1[128]; -static int16_t xsin1[128]; - -static uint16_t crc_table[256]; +/* + * AC-3 tables + * Copyright (c) 2000, 2001, 2002 Fabrice Bellard. + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVCODEC_AC3TAB_H +#define AVCODEC_AC3TAB_H + +#include "libavutil/common.h" + +extern const uint16_t ff_ac3_frame_size_tab[38][3]; +extern const uint8_t ff_ac3_channels_tab[8]; +extern const uint16_t ff_ac3_sample_rate_tab[3]; +extern const uint16_t ff_ac3_bitrate_tab[19]; +extern const int16_t ff_ac3_window[256]; +extern const uint8_t ff_ac3_log_add_tab[260]; +extern const uint16_t ff_ac3_hearing_threshold_tab[50][3]; +extern const uint8_t ff_ac3_bap_tab[64]; +extern const uint8_t ff_ac3_slow_decay_tab[4]; +extern const uint8_t ff_ac3_fast_decay_tab[4]; +extern const uint16_t ff_ac3_slow_gain_tab[4]; +extern const uint16_t ff_ac3_db_per_bit_tab[4]; +extern const int16_t ff_ac3_floor_tab[8]; +extern const uint16_t ff_ac3_fast_gain_tab[8]; +extern const uint8_t ff_ac3_critical_band_size_tab[50]; +extern const uint16_t ff_eac3_default_chmap[8]; + +/** Custom channel map locations bitmask + * Other channels described in documentation: + * Lc/Rc pair, Lrs/Rrs pair, Ts, Lsd/Rsd pair, + * Lw/Rw pair, Lvh/Rvh pair, Cvh, Reserved, LFE2 + */ +enum CustomChannelMapLocation{ + AC3_CHMAP_L= 1<<(15-0), + AC3_CHMAP_C= 1<<(15-1), + AC3_CHMAP_R= 1<<(15-2), + AC3_CHMAP_L_SUR= 1<<(15-3), + AC3_CHMAP_R_SUR = 1<<(15-4), + AC3_CHMAP_C_SUR= 1<<(15-7), + AC3_CHMAP_LFE = 1<<(15-15) +}; + +#endif /* AVCODEC_AC3TAB_H */