1/***********************************************************************
2Copyright (c) 2006-2011, Skype Limited. All rights reserved.
3Redistribution and use in source and binary forms, with or without
4modification, are permitted provided that the following conditions
5are met:
6- Redistributions of source code must retain the above copyright notice,
7this list of conditions and the following disclaimer.
8- Redistributions in binary form must reproduce the above copyright
9notice, this list of conditions and the following disclaimer in the
10documentation and/or other materials provided with the distribution.
11- Neither the name of Internet Society, IETF or IETF Trust, nor the
12names of specific contributors, may be used to endorse or promote
13products derived from this software without specific prior written
14permission.
15THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS”
16AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
19LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25POSSIBILITY OF SUCH DAMAGE.
26***********************************************************************/
27
28#ifdef HAVE_CONFIG_H
29#include "config.h"
30#endif
31
32#include "structs.h"
33#include "define.h"
34#include "tables.h"
35
36#ifdef __cplusplus
37extern "C"
38{
39#endif
40
41/* Piece-wise linear mapping from bitrate in kbps to coding quality in dB SNR */
42const opus_int32 silk_TargetRate_table_NB[ TARGET_RATE_TAB_SZ ] = {
43    0,      8000,   9400,   11500,  13500,  17500,  25000,  MAX_TARGET_RATE_BPS
44};
45const opus_int32 silk_TargetRate_table_MB[ TARGET_RATE_TAB_SZ ] = {
46    0,      9000,   12000,  14500,  18500,  24500,  35500,  MAX_TARGET_RATE_BPS
47};
48const opus_int32 silk_TargetRate_table_WB[ TARGET_RATE_TAB_SZ ] = {
49    0,      10500,  14000,  17000,  21500,  28500,  42000,  MAX_TARGET_RATE_BPS
50};
51const opus_int16 silk_SNR_table_Q1[ TARGET_RATE_TAB_SZ ] = {
52    18,     29,     38,     40,     46,     52,     62,     84
53};
54
55/* Tables for stereo predictor coding */
56const opus_int16 silk_stereo_pred_quant_Q13[ STEREO_QUANT_TAB_SIZE ] = {
57    -13732, -10050, -8266, -7526, -6500, -5000, -2950,  -820,
58       820,   2950,  5000,  6500,  7526,  8266, 10050, 13732
59};
60const opus_uint8  silk_stereo_pred_joint_iCDF[ 25 ] = {
61    249, 247, 246, 245, 244,
62    234, 210, 202, 201, 200,
63    197, 174,  82,  59,  56,
64     55,  54,  46,  22,  12,
65     11,  10,   9,   7,   0
66};
67const opus_uint8  silk_stereo_only_code_mid_iCDF[ 2 ] = { 64, 0 };
68
69/* Tables for LBRR flags */
70static const opus_uint8 silk_LBRR_flags_2_iCDF[ 3 ] = { 203, 150, 0 };
71static const opus_uint8 silk_LBRR_flags_3_iCDF[ 7 ] = { 215, 195, 166, 125, 110, 82, 0 };
72const opus_uint8 * const silk_LBRR_flags_iCDF_ptr[ 2 ] = {
73    silk_LBRR_flags_2_iCDF,
74    silk_LBRR_flags_3_iCDF
75};
76
77/* Table for LSB coding */
78const opus_uint8 silk_lsb_iCDF[ 2 ] = { 120, 0 };
79
80/* Tables for LTPScale */
81const opus_uint8 silk_LTPscale_iCDF[ 3 ] = { 128, 64, 0 };
82
83/* Tables for signal type and offset coding */
84const opus_uint8 silk_type_offset_VAD_iCDF[ 4 ] = {
85       232,    158,    10,      0
86};
87const opus_uint8 silk_type_offset_no_VAD_iCDF[ 2 ] = {
88       230,      0
89};
90
91/* Tables for NLSF interpolation factor */
92const opus_uint8 silk_NLSF_interpolation_factor_iCDF[ 5 ] = { 243, 221, 192, 181, 0 };
93
94/* Quantization offsets */
95const opus_int16  silk_Quantization_Offsets_Q10[ 2 ][ 2 ] = {
96    { OFFSET_UVL_Q10, OFFSET_UVH_Q10 }, { OFFSET_VL_Q10, OFFSET_VH_Q10 }
97};
98
99/* Table for LTPScale */
100const opus_int16 silk_LTPScales_table_Q14[ 3 ] = { 15565, 12288, 8192 };
101
102/* Uniform entropy tables */
103const opus_uint8 silk_uniform3_iCDF[ 3 ] = { 171, 85, 0 };
104const opus_uint8 silk_uniform4_iCDF[ 4 ] = { 192, 128, 64, 0 };
105const opus_uint8 silk_uniform5_iCDF[ 5 ] = { 205, 154, 102, 51, 0 };
106const opus_uint8 silk_uniform6_iCDF[ 6 ] = { 213, 171, 128, 85, 43, 0 };
107const opus_uint8 silk_uniform8_iCDF[ 8 ] = { 224, 192, 160, 128, 96, 64, 32, 0 };
108
109const opus_uint8 silk_NLSF_EXT_iCDF[ 7 ] = { 100, 40, 16, 7, 3, 1, 0 };
110
111/*  Elliptic/Cauer filters designed with 0.1 dB passband ripple,
112        80 dB minimum stopband attenuation, and
113        [0.95 : 0.15 : 0.35] normalized cut off frequencies. */
114
115/* Interpolation points for filter coefficients used in the bandwidth transition smoother */
116const opus_int32 silk_Transition_LP_B_Q28[ TRANSITION_INT_NUM ][ TRANSITION_NB ] =
117{
118{    250767114,  501534038,  250767114  },
119{    209867381,  419732057,  209867381  },
120{    170987846,  341967853,  170987846  },
121{    131531482,  263046905,  131531482  },
122{     89306658,  178584282,   89306658  }
123};
124
125/* Interpolation points for filter coefficients used in the bandwidth transition smoother */
126const opus_int32 silk_Transition_LP_A_Q28[ TRANSITION_INT_NUM ][ TRANSITION_NA ] =
127{
128{    506393414,  239854379  },
129{    411067935,  169683996  },
130{    306733530,  116694253  },
131{    185807084,   77959395  },
132{     35497197,   57401098  }
133};
134
135#ifdef __cplusplus
136}
137#endif
138
139