ref: fcf95bac9330e8e6db1184496ae33007a7c7a9cf
dir: /src_common/SKP_Silk_tables_other.c/
/***********************************************************************
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#include "SKP_Silk_structs.h"
#include "SKP_Silk_define.h"
#include "SKP_Silk_tables.h"
#ifdef __cplusplus
extern "C"
{
#endif
/* Piece-wise linear mapping from bitrate in kbps to coding quality in dB SNR */
const SKP_int32 TargetRate_table_NB[ TARGET_RATE_TAB_SZ ] = {
0, 8000, 9400, 11500, 13500, 17500, 25000, MAX_TARGET_RATE_BPS
};
const SKP_int32 TargetRate_table_MB[ TARGET_RATE_TAB_SZ ] = {
0, 9000, 11800, 14200, 17700, 23700, 34400, MAX_TARGET_RATE_BPS
};
const SKP_int32 TargetRate_table_WB[ TARGET_RATE_TAB_SZ ] = {
0, 10500, 14000, 17000, 21300, 28000, 41500, MAX_TARGET_RATE_BPS
};
const SKP_int16 SNR_table_Q1[ TARGET_RATE_TAB_SZ ] = {
19, 29, 35, 39, 44, 50, 60, 80
};
/* Table for stereo predictor coding */
/* p = [2.^(-7:-1), 1, fliplr(2.^(-7:-1))]+2e-2; p = p/sum(p); fprintf('%d, ', round(256 - 256 * cumsum(p(1:end-1)))) */
const SKP_uint8 SKP_Silk_stereo_predictor_iCDF[ STEREO_QUANT_STEPS + 1 ] = { 254, 251, 247, 241, 229, 208, 168, 88, 48, 27, 15, 9, 5, 2 };
/* Tables for LBRR flags */
const SKP_uint8 SKP_Silk_LBRR_flags_2_iCDF[ 3 ] = { 203, 150, 0 };
const SKP_uint8 SKP_Silk_LBRR_flags_3_iCDF[ 7 ] = { 215, 195, 166, 125, 110, 82, 0 };
const SKP_uint8 * const SKP_Silk_LBRR_flags_iCDF_ptr[ 2 ] = {
SKP_Silk_LBRR_flags_2_iCDF,
SKP_Silk_LBRR_flags_3_iCDF
};
/* Table for LSB coding */
const SKP_uint8 SKP_Silk_lsb_iCDF[ 2 ] = { 120, 0 };
/* Tables for LTPScale */
const SKP_uint8 SKP_Silk_LTPscale_iCDF[ 3 ] = { 128, 64, 0 };
/* Tables for signal type and offset coding */
const SKP_uint8 SKP_Silk_type_offset_VAD_iCDF[ 4 ] = {
232, 158, 10, 0
};
const SKP_uint8 SKP_Silk_type_offset_no_VAD_iCDF[ 2 ] = {
230, 0
};
/* Tables for NLSF interpolation factor */
const SKP_uint8 SKP_Silk_NLSF_interpolation_factor_iCDF[ 5 ] = { 243, 221, 192, 181, 0 };
/* Quantization offsets */
const SKP_int16 SKP_Silk_Quantization_Offsets_Q10[ 2 ][ 2 ] = {
{ OFFSET_UVL_Q10, OFFSET_UVH_Q10 }, { OFFSET_VL_Q10, OFFSET_VH_Q10 }
};
/* Table for LTPScale */
const SKP_int16 SKP_Silk_LTPScales_table_Q14[ 3 ] = { 15565, 12288, 8192 };
/* Uniform entropy tables */
const SKP_uint8 SKP_Silk_uniform2_iCDF[ 2 ] = { 128, 0 };
const SKP_uint8 SKP_Silk_uniform4_iCDF[ 4 ] = { 192, 128, 64, 0 };
const SKP_uint8 SKP_Silk_uniform6_iCDF[ 6 ] = { 213, 171, 128, 85, 43, 0 };
const SKP_uint8 SKP_Silk_uniform8_iCDF[ 8 ] = { 224, 192, 160, 128, 96, 64, 32, 0 };
const SKP_uint8 SKP_Silk_NLSF_EXT_iCDF[ 7 ] = { 100, 40, 16, 7, 3, 1, 0 };
/* Elliptic/Cauer filters designed with 0.1 dB passband ripple,
80 dB minimum stopband attenuation, and
[0.95 : 0.15 : 0.35] normalized cut off frequencies. */
/* Interpolation points for filter coefficients used in the bandwidth transition smoother */
const SKP_int32 SKP_Silk_Transition_LP_B_Q28[ TRANSITION_INT_NUM ][ TRANSITION_NB ] =
{
{ 250767114, 501534038, 250767114 },
{ 209867381, 419732057, 209867381 },
{ 170987846, 341967853, 170987846 },
{ 131531482, 263046905, 131531482 },
{ 89306658, 178584282, 89306658 }
};
/* Interpolation points for filter coefficients used in the bandwidth transition smoother */
const SKP_int32 SKP_Silk_Transition_LP_A_Q28[ TRANSITION_INT_NUM ][ TRANSITION_NA ] =
{
{ 506393414, 239854379 },
{ 411067935, 169683996 },
{ 306733530, 116694253 },
{ 185807084, 77959395 },
{ 35497197, 57401098 }
};
#ifdef __cplusplus
}
#endif