1885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/*********************************************************************** 2885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgCopyright (c) 2006-2011, Skype Limited. All rights reserved. 3885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgRedistribution and use in source and binary forms, with or without 4885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgmodification, are permitted provided that the following conditions 5885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgare met: 6885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org- Redistributions of source code must retain the above copyright notice, 7885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgthis list of conditions and the following disclaimer. 8885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org- Redistributions in binary form must reproduce the above copyright 9885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgnotice, this list of conditions and the following disclaimer in the 10885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgdocumentation and/or other materials provided with the distribution. 11e3ea049fcaee2247e45f0ce793d4313babb4ef69tlegrand@chromium.org- Neither the name of Internet Society, IETF or IETF Trust, nor the 12885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgnames of specific contributors, may be used to endorse or promote 13885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgproducts derived from this software without specific prior written 14885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgpermission. 15e3ea049fcaee2247e45f0ce793d4313babb4ef69tlegrand@chromium.orgTHIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgAND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgIMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 19885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgLIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgCONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgSUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgINTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgCONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgPOSSIBILITY OF SUCH DAMAGE. 26885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org***********************************************************************/ 27885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 28885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifndef SILK_DEFINE_H 29885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define SILK_DEFINE_H 30885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 31885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#include "errors.h" 32885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#include "typedef.h" 33885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 34885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifdef __cplusplus 35885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgextern "C" 36885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org{ 37885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif 38885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 39885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Max number of encoder channels (1/2) */ 40885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define ENCODER_NUM_CHANNELS 2 41885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Number of decoder channels (1/2) */ 42885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define DECODER_NUM_CHANNELS 2 43885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 44885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_FRAMES_PER_PACKET 3 45885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 46885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Limits on bitrate */ 47885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MIN_TARGET_RATE_BPS 5000 48885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_TARGET_RATE_BPS 80000 49885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define TARGET_RATE_TAB_SZ 8 50885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 51885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* LBRR thresholds */ 52885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define LBRR_NB_MIN_RATE_BPS 12000 53885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define LBRR_MB_MIN_RATE_BPS 14000 54885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define LBRR_WB_MIN_RATE_BPS 16000 55885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 56885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* DTX settings */ 57885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define NB_SPEECH_FRAMES_BEFORE_DTX 10 /* eq 200 ms */ 58885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_CONSECUTIVE_DTX 20 /* eq 400 ms */ 59885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 60885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Maximum sampling frequency */ 61885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_FS_KHZ 16 62885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_API_FS_KHZ 48 63885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 64885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Signal types */ 65885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define TYPE_NO_VOICE_ACTIVITY 0 66885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define TYPE_UNVOICED 1 67885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define TYPE_VOICED 2 68885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 69885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Conditional coding types */ 70885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define CODE_INDEPENDENTLY 0 71885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define CODE_INDEPENDENTLY_NO_LTP_SCALING 1 72885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define CODE_CONDITIONALLY 2 73885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 74885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Settings for stereo processing */ 75885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define STEREO_QUANT_TAB_SIZE 16 76885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define STEREO_QUANT_SUB_STEPS 5 77885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define STEREO_INTERP_LEN_MS 8 /* must be even */ 78885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define STEREO_RATIO_SMOOTH_COEF 0.01 /* smoothing coef for signal norms and stereo width */ 79885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 80885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Range of pitch lag estimates */ 81885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define PITCH_EST_MIN_LAG_MS 2 /* 2 ms -> 500 Hz */ 82885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define PITCH_EST_MAX_LAG_MS 18 /* 18 ms -> 56 Hz */ 83885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 84885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Maximum number of subframes */ 85885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_NB_SUBFR 4 86885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 87885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Number of samples per frame */ 88885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define LTP_MEM_LENGTH_MS 20 89885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define SUB_FRAME_LENGTH_MS 5 90885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_SUB_FRAME_LENGTH ( SUB_FRAME_LENGTH_MS * MAX_FS_KHZ ) 91885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_FRAME_LENGTH_MS ( SUB_FRAME_LENGTH_MS * MAX_NB_SUBFR ) 92885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_FRAME_LENGTH ( MAX_FRAME_LENGTH_MS * MAX_FS_KHZ ) 93885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 94885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Milliseconds of lookahead for pitch analysis */ 95885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define LA_PITCH_MS 2 96885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define LA_PITCH_MAX ( LA_PITCH_MS * MAX_FS_KHZ ) 97885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 98885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Order of LPC used in find pitch */ 99885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_FIND_PITCH_LPC_ORDER 16 100885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 101885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Length of LPC window used in find pitch */ 102885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define FIND_PITCH_LPC_WIN_MS ( 20 + (LA_PITCH_MS << 1) ) 103885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define FIND_PITCH_LPC_WIN_MS_2_SF ( 10 + (LA_PITCH_MS << 1) ) 104885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define FIND_PITCH_LPC_WIN_MAX ( FIND_PITCH_LPC_WIN_MS * MAX_FS_KHZ ) 105885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 106885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Milliseconds of lookahead for noise shape analysis */ 107885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define LA_SHAPE_MS 5 108885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define LA_SHAPE_MAX ( LA_SHAPE_MS * MAX_FS_KHZ ) 109885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 110885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Maximum length of LPC window used in noise shape analysis */ 111885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define SHAPE_LPC_WIN_MAX ( 15 * MAX_FS_KHZ ) 112885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 113885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* dB level of lowest gain quantization level */ 114885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MIN_QGAIN_DB 2 115885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* dB level of highest gain quantization level */ 116885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_QGAIN_DB 88 117885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Number of gain quantization levels */ 118885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define N_LEVELS_QGAIN 64 119885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Max increase in gain quantization index */ 120885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_DELTA_GAIN_QUANT 36 121885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Max decrease in gain quantization index */ 122885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MIN_DELTA_GAIN_QUANT -4 123885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 124885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Quantization offsets (multiples of 4) */ 125885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define OFFSET_VL_Q10 32 126885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define OFFSET_VH_Q10 100 127885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define OFFSET_UVL_Q10 100 128885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define OFFSET_UVH_Q10 240 129885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 130885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define QUANT_LEVEL_ADJUST_Q10 80 131885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 132885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Maximum numbers of iterations used to stabilize an LPC vector */ 133885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_LPC_STABILIZE_ITERATIONS 16 134885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_PREDICTION_POWER_GAIN 1e4f 135885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_PREDICTION_POWER_GAIN_AFTER_RESET 1e2f 136885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 137885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_LPC_ORDER 16 138885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MIN_LPC_ORDER 10 139885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 140885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Find Pred Coef defines */ 141885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define LTP_ORDER 5 142885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 143885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* LTP quantization settings */ 144885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define NB_LTP_CBKS 3 145885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 146885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Flag to use harmonic noise shaping */ 147885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define USE_HARM_SHAPING 1 148885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 149885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Max LPC order of noise shaping filters */ 150885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_SHAPE_LPC_ORDER 16 151885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 152885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define HARM_SHAPE_FIR_TAPS 3 153885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 154885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Maximum number of delayed decision states */ 155885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_DEL_DEC_STATES 4 156885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 157885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define LTP_BUF_LENGTH 512 158885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define LTP_MASK ( LTP_BUF_LENGTH - 1 ) 159885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 160885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define DECISION_DELAY 32 161885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define DECISION_DELAY_MASK ( DECISION_DELAY - 1 ) 162885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 163885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Number of subframes for excitation entropy coding */ 164885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define SHELL_CODEC_FRAME_LENGTH 16 165885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define LOG2_SHELL_CODEC_FRAME_LENGTH 4 166885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_NB_SHELL_BLOCKS ( MAX_FRAME_LENGTH / SHELL_CODEC_FRAME_LENGTH ) 167885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 168885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Number of rate levels, for entropy coding of excitation */ 169885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define N_RATE_LEVELS 10 170885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 171885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Maximum sum of pulses per shell coding frame */ 172885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_PULSES 16 173885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 174885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define MAX_MATRIX_SIZE MAX_LPC_ORDER /* Max of LPC Order and LTP order */ 175885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 176885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#if( MAX_LPC_ORDER > DECISION_DELAY ) 177885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org# define NSQ_LPC_BUF_LENGTH MAX_LPC_ORDER 178885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#else 179885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org# define NSQ_LPC_BUF_LENGTH DECISION_DELAY 180885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif 181885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 182885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/***************************/ 183885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Voice activity detector */ 184885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/***************************/ 185885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define VAD_N_BANDS 4 186885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 187885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define VAD_INTERNAL_SUBFRAMES_LOG2 2 188885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define VAD_INTERNAL_SUBFRAMES ( 1 << VAD_INTERNAL_SUBFRAMES_LOG2 ) 189885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 190885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define VAD_NOISE_LEVEL_SMOOTH_COEF_Q16 1024 /* Must be < 4096 */ 191885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define VAD_NOISE_LEVELS_BIAS 50 192885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 193885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Sigmoid settings */ 194885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define VAD_NEGATIVE_OFFSET_Q5 128 /* sigmoid is 0 at -128 */ 195885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define VAD_SNR_FACTOR_Q16 45000 196885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 197885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* smoothing for SNR measurement */ 198885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define VAD_SNR_SMOOTH_COEF_Q18 4096 199885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 200885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Size of the piecewise linear cosine approximation table for the LSFs */ 201885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define LSF_COS_TAB_SZ_FIX 128 202885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 203885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/******************/ 204885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* NLSF quantizer */ 205885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/******************/ 206885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define NLSF_W_Q 2 207885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define NLSF_VQ_MAX_VECTORS 32 208885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define NLSF_VQ_MAX_SURVIVORS 32 209885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define NLSF_QUANT_MAX_AMPLITUDE 4 210885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define NLSF_QUANT_MAX_AMPLITUDE_EXT 10 211885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define NLSF_QUANT_LEVEL_ADJ 0.1 212885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define NLSF_QUANT_DEL_DEC_STATES_LOG2 2 213885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define NLSF_QUANT_DEL_DEC_STATES ( 1 << NLSF_QUANT_DEL_DEC_STATES_LOG2 ) 214885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 215885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Transition filtering for mode switching */ 216885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define TRANSITION_TIME_MS 5120 /* 5120 = 64 * FRAME_LENGTH_MS * ( TRANSITION_INT_NUM - 1 ) = 64*(20*4)*/ 217885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define TRANSITION_NB 3 /* Hardcoded in tables */ 218885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define TRANSITION_NA 2 /* Hardcoded in tables */ 219885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define TRANSITION_INT_NUM 5 /* Hardcoded in tables */ 220885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define TRANSITION_FRAMES ( TRANSITION_TIME_MS / MAX_FRAME_LENGTH_MS ) 221885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define TRANSITION_INT_STEPS ( TRANSITION_FRAMES / ( TRANSITION_INT_NUM - 1 ) ) 222885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 223885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* BWE factors to apply after packet loss */ 224885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define BWE_AFTER_LOSS_Q16 63570 225885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 226885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Defines for CN generation */ 227885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define CNG_BUF_MASK_MAX 255 /* 2^floor(log2(MAX_FRAME_LENGTH))-1 */ 228885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define CNG_GAIN_SMTH_Q16 4634 /* 0.25^(1/4) */ 229885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#define CNG_NLSF_SMTH_Q16 16348 /* 0.25 */ 230885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 231885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#ifdef __cplusplus 232885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 233885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif 234885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 235885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif 236