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a16577d985
This is essentially a MS GSM decoder extension that supports more sampling rates and lower bitrates. Signed-off-by: Anton Khirnov <anton@khirnov.net>
121 lines
6.6 KiB
C
121 lines
6.6 KiB
C
/*
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* gsm 06.10 decoder data
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* Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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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#include <stdint.h>
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#include "gsmdec_data.h"
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const uint16_t ff_gsm_long_term_gain_tab[4] = {
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3277, 11469, 21299, 32767
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};
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const int16_t ff_gsm_dequant_tab[64][8] = {
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{ -28, -20, -12, -4, 4, 12, 20, 28},
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{ -56, -40, -24, -8, 8, 24, 40, 56},
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{ -84, -60, -36, -12, 12, 36, 60, 84},
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{ -112, -80, -48, -16, 16, 48, 80, 112},
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{ -140, -100, -60, -20, 20, 60, 100, 140},
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{ -168, -120, -72, -24, 24, 72, 120, 168},
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{ -196, -140, -84, -28, 28, 84, 140, 196},
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{ -224, -160, -96, -32, 32, 96, 160, 224},
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{ -252, -180, -108, -36, 36, 108, 180, 252},
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{ -280, -200, -120, -40, 40, 120, 200, 280},
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{ -308, -220, -132, -44, 44, 132, 220, 308},
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{ -336, -240, -144, -48, 48, 144, 240, 336},
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{ -364, -260, -156, -52, 52, 156, 260, 364},
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{ -392, -280, -168, -56, 56, 168, 280, 392},
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{ -420, -300, -180, -60, 60, 180, 300, 420},
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{ -448, -320, -192, -64, 64, 192, 320, 448},
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{ -504, -360, -216, -72, 72, 216, 360, 504},
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{ -560, -400, -240, -80, 80, 240, 400, 560},
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{ -616, -440, -264, -88, 88, 264, 440, 616},
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{ -672, -480, -288, -96, 96, 288, 480, 672},
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{ -728, -520, -312, -104, 104, 312, 520, 728},
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{ -784, -560, -336, -112, 112, 336, 560, 784},
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{ -840, -600, -360, -120, 120, 360, 600, 840},
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{ -896, -640, -384, -128, 128, 384, 640, 896},
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{ -1008, -720, -432, -144, 144, 432, 720, 1008},
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{ -1120, -800, -480, -160, 160, 480, 800, 1120},
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{ -1232, -880, -528, -176, 176, 528, 880, 1232},
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{ -1344, -960, -576, -192, 192, 576, 960, 1344},
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{ -1456, -1040, -624, -208, 208, 624, 1040, 1456},
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{ -1568, -1120, -672, -224, 224, 672, 1120, 1568},
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{ -1680, -1200, -720, -240, 240, 720, 1200, 1680},
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{ -1792, -1280, -768, -256, 256, 768, 1280, 1792},
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{ -2016, -1440, -864, -288, 288, 864, 1440, 2016},
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{ -2240, -1600, -960, -320, 320, 960, 1600, 2240},
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{ -2464, -1760, -1056, -352, 352, 1056, 1760, 2464},
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{ -2688, -1920, -1152, -384, 384, 1152, 1920, 2688},
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{ -2912, -2080, -1248, -416, 416, 1248, 2080, 2912},
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{ -3136, -2240, -1344, -448, 448, 1344, 2240, 3136},
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{ -3360, -2400, -1440, -480, 480, 1440, 2400, 3360},
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{ -3584, -2560, -1536, -512, 512, 1536, 2560, 3584},
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{ -4032, -2880, -1728, -576, 576, 1728, 2880, 4032},
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{ -4480, -3200, -1920, -640, 640, 1920, 3200, 4480},
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{ -4928, -3520, -2112, -704, 704, 2112, 3520, 4928},
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{ -5376, -3840, -2304, -768, 768, 2304, 3840, 5376},
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{ -5824, -4160, -2496, -832, 832, 2496, 4160, 5824},
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{ -6272, -4480, -2688, -896, 896, 2688, 4480, 6272},
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{ -6720, -4800, -2880, -960, 960, 2880, 4800, 6720},
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{ -7168, -5120, -3072, -1024, 1024, 3072, 5120, 7168},
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{ -8063, -5759, -3456, -1152, 1152, 3456, 5760, 8064},
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{ -8959, -6399, -3840, -1280, 1280, 3840, 6400, 8960},
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{ -9855, -7039, -4224, -1408, 1408, 4224, 7040, 9856},
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{-10751, -7679, -4608, -1536, 1536, 4608, 7680, 10752},
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{-11647, -8319, -4992, -1664, 1664, 4992, 8320, 11648},
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{-12543, -8959, -5376, -1792, 1792, 5376, 8960, 12544},
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{-13439, -9599, -5760, -1920, 1920, 5760, 9600, 13440},
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{-14335, -10239, -6144, -2048, 2048, 6144, 10240, 14336},
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{-16127, -11519, -6912, -2304, 2304, 6912, 11519, 16127},
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{-17919, -12799, -7680, -2560, 2560, 7680, 12799, 17919},
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{-19711, -14079, -8448, -2816, 2816, 8448, 14079, 19711},
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{-21503, -15359, -9216, -3072, 3072, 9216, 15359, 21503},
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{-23295, -16639, -9984, -3328, 3328, 9984, 16639, 23295},
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{-25087, -17919, -10752, -3584, 3584, 10752, 17919, 25087},
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{-26879, -19199, -11520, -3840, 3840, 11520, 19199, 26879},
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{-28671, -20479, -12288, -4096, 4096, 12288, 20479, 28671}
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};
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static const int apcm_bits[11][13] = {
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{ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 },
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{ 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1 },
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{ 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1 },
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{ 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1 },
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{ 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1 },
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{ 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
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{ 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
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{ 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
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{ 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
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{ 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2 },
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{ 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 }
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};
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const int* const ff_gsm_apcm_bits[][4] = {
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{ apcm_bits[10], apcm_bits[10], apcm_bits[10], apcm_bits[10] }, // 13000
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{ apcm_bits[10], apcm_bits[10], apcm_bits[10], apcm_bits[ 6] }, // 12400
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{ apcm_bits[10], apcm_bits[10], apcm_bits[ 7], apcm_bits[ 5] }, // 11800
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{ apcm_bits[10], apcm_bits[ 8], apcm_bits[ 5], apcm_bits[ 5] }, // 11200
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{ apcm_bits[ 9], apcm_bits[ 5], apcm_bits[ 5], apcm_bits[ 5] }, // 10600
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{ apcm_bits[ 5], apcm_bits[ 5], apcm_bits[ 5], apcm_bits[ 1] }, // 10000
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{ apcm_bits[ 5], apcm_bits[ 5], apcm_bits[ 2], apcm_bits[ 0] }, // 9400
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{ apcm_bits[ 5], apcm_bits[ 3], apcm_bits[ 0], apcm_bits[ 0] }, // 8800
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{ apcm_bits[ 4], apcm_bits[ 0], apcm_bits[ 0], apcm_bits[ 0] }, // 8200
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};
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