Gregory Maxwell | ae23114 | 2011-07-30 08:18:48 -0400 | [diff] [blame] | 1 | /*********************************************************************** |
| 2 | Copyright (c) 2006-2011, Skype Limited. All rights reserved. |
| 3 | Redistribution and use in source and binary forms, with or without |
Jean-Marc Valin | ae00e60 | 2012-04-20 16:31:04 -0400 | [diff] [blame] | 4 | modification, are permitted provided that the following conditions |
| 5 | are met: |
Gregory Maxwell | ae23114 | 2011-07-30 08:18:48 -0400 | [diff] [blame] | 6 | - Redistributions of source code must retain the above copyright notice, |
| 7 | this list of conditions and the following disclaimer. |
| 8 | - Redistributions in binary form must reproduce the above copyright |
| 9 | notice, this list of conditions and the following disclaimer in the |
| 10 | documentation and/or other materials provided with the distribution. |
Jean-Marc Valin | ae00e60 | 2012-04-20 16:31:04 -0400 | [diff] [blame] | 11 | - Neither the name of Internet Society, IETF or IETF Trust, nor the |
| 12 | names of specific contributors, may be used to endorse or promote |
| 13 | products derived from this software without specific prior written |
| 14 | permission. |
| 15 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” |
| 16 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 19 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 20 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 21 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 22 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 23 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 24 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 25 | POSSIBILITY OF SUCH DAMAGE. |
Gregory Maxwell | ae23114 | 2011-07-30 08:18:48 -0400 | [diff] [blame] | 26 | ***********************************************************************/ |
| 27 | |
Jean-Marc Valin | 5a48412 | 2011-08-15 10:49:53 -0400 | [diff] [blame] | 28 | #ifdef HAVE_CONFIG_H |
| 29 | #include "config.h" |
| 30 | #endif |
| 31 | |
Jean-Marc Valin | 1c2f563 | 2011-09-16 01:16:53 -0700 | [diff] [blame] | 32 | #include "structs.h" |
| 33 | #include "define.h" |
| 34 | #include "tables.h" |
Gregory Maxwell | ae23114 | 2011-07-30 08:18:48 -0400 | [diff] [blame] | 35 | |
| 36 | #ifdef __cplusplus |
| 37 | extern "C" |
| 38 | { |
| 39 | #endif |
| 40 | |
| 41 | /* Piece-wise linear mapping from bitrate in kbps to coding quality in dB SNR */ |
| 42 | const opus_int32 silk_TargetRate_table_NB[ TARGET_RATE_TAB_SZ ] = { |
| 43 | 0, 8000, 9400, 11500, 13500, 17500, 25000, MAX_TARGET_RATE_BPS |
| 44 | }; |
| 45 | const opus_int32 silk_TargetRate_table_MB[ TARGET_RATE_TAB_SZ ] = { |
| 46 | 0, 9000, 12000, 14500, 18500, 24500, 35500, MAX_TARGET_RATE_BPS |
| 47 | }; |
| 48 | const opus_int32 silk_TargetRate_table_WB[ TARGET_RATE_TAB_SZ ] = { |
| 49 | 0, 10500, 14000, 17000, 21500, 28500, 42000, MAX_TARGET_RATE_BPS |
| 50 | }; |
| 51 | const opus_int16 silk_SNR_table_Q1[ TARGET_RATE_TAB_SZ ] = { |
Koen Vos | bbfc9c9 | 2011-12-13 14:50:12 -0500 | [diff] [blame] | 52 | 18, 29, 38, 40, 46, 52, 62, 84 |
Gregory Maxwell | ae23114 | 2011-07-30 08:18:48 -0400 | [diff] [blame] | 53 | }; |
| 54 | |
| 55 | /* Tables for stereo predictor coding */ |
| 56 | const 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 | }; |
| 60 | const 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 | }; |
| 67 | const opus_uint8 silk_stereo_only_code_mid_iCDF[ 2 ] = { 64, 0 }; |
| 68 | |
| 69 | /* Tables for LBRR flags */ |
| 70 | const opus_uint8 silk_LBRR_flags_2_iCDF[ 3 ] = { 203, 150, 0 }; |
| 71 | const opus_uint8 silk_LBRR_flags_3_iCDF[ 7 ] = { 215, 195, 166, 125, 110, 82, 0 }; |
| 72 | const 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 */ |
| 78 | const opus_uint8 silk_lsb_iCDF[ 2 ] = { 120, 0 }; |
| 79 | |
| 80 | /* Tables for LTPScale */ |
| 81 | const opus_uint8 silk_LTPscale_iCDF[ 3 ] = { 128, 64, 0 }; |
| 82 | |
| 83 | /* Tables for signal type and offset coding */ |
| 84 | const opus_uint8 silk_type_offset_VAD_iCDF[ 4 ] = { |
| 85 | 232, 158, 10, 0 |
| 86 | }; |
| 87 | const opus_uint8 silk_type_offset_no_VAD_iCDF[ 2 ] = { |
| 88 | 230, 0 |
| 89 | }; |
| 90 | |
| 91 | /* Tables for NLSF interpolation factor */ |
| 92 | const opus_uint8 silk_NLSF_interpolation_factor_iCDF[ 5 ] = { 243, 221, 192, 181, 0 }; |
| 93 | |
| 94 | /* Quantization offsets */ |
| 95 | const 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 */ |
| 100 | const opus_int16 silk_LTPScales_table_Q14[ 3 ] = { 15565, 12288, 8192 }; |
| 101 | |
| 102 | /* Uniform entropy tables */ |
| 103 | const opus_uint8 silk_uniform3_iCDF[ 3 ] = { 171, 85, 0 }; |
| 104 | const opus_uint8 silk_uniform4_iCDF[ 4 ] = { 192, 128, 64, 0 }; |
| 105 | const opus_uint8 silk_uniform5_iCDF[ 5 ] = { 205, 154, 102, 51, 0 }; |
| 106 | const opus_uint8 silk_uniform6_iCDF[ 6 ] = { 213, 171, 128, 85, 43, 0 }; |
| 107 | const opus_uint8 silk_uniform8_iCDF[ 8 ] = { 224, 192, 160, 128, 96, 64, 32, 0 }; |
| 108 | |
| 109 | const 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 */ |
| 116 | const 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 */ |
| 126 | const 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 | |