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#ifdef HAVE_CONFIG_H 29885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#include "config.h" 30885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#endif 31885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 32885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#include "main_FIX.h" 33e3ea049fcaee2247e45f0ce793d4313babb4ef69tlegrand@chromium.org#include "stack_alloc.h" 34885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org#include "tuning_parameters.h" 35885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 36885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Compute gain to make warped filter coefficients have a zero mean log frequency response on a */ 37885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* non-warped frequency scale. (So that it can be implemented with a minimum-phase monic filter.) */ 38885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Note: A monic filter is one with the first coefficient equal to 1.0. In Silk we omit the first */ 39885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* coefficient in an array of coefficients, for monic filters. */ 403c3902f0ac13428394f14f78f0fab05ef3468d69tlegrand@google.comstatic OPUS_INLINE opus_int32 warped_gain( /* gain in Q16*/ 41885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org const opus_int32 *coefs_Q24, 42885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int lambda_Q16, 43885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int order 44885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org) { 45885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int i; 46885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 gain_Q24; 47885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 48885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org lambda_Q16 = -lambda_Q16; 49885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org gain_Q24 = coefs_Q24[ order - 1 ]; 50885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( i = order - 2; i >= 0; i-- ) { 51885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org gain_Q24 = silk_SMLAWB( coefs_Q24[ i ], gain_Q24, lambda_Q16 ); 52885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 53885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org gain_Q24 = silk_SMLAWB( SILK_FIX_CONST( 1.0, 24 ), gain_Q24, -lambda_Q16 ); 54885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return silk_INVERSE32_varQ( gain_Q24, 40 ); 55885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 56885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 57885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Convert warped filter coefficients to monic pseudo-warped coefficients and limit maximum */ 58885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* amplitude of monic warped coefficients by using bandwidth expansion on the true coefficients */ 593c3902f0ac13428394f14f78f0fab05ef3468d69tlegrand@google.comstatic OPUS_INLINE void limit_warped_coefs( 60885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 *coefs_syn_Q24, 61885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 *coefs_ana_Q24, 62885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int lambda_Q16, 63885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 limit_Q24, 64885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int order 65885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org) { 66885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int i, iter, ind = 0; 67885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 tmp, maxabs_Q24, chirp_Q16, gain_syn_Q16, gain_ana_Q16; 68885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 nom_Q16, den_Q24; 69885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 70885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Convert to monic coefficients */ 71885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org lambda_Q16 = -lambda_Q16; 72885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( i = order - 1; i > 0; i-- ) { 73885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org coefs_syn_Q24[ i - 1 ] = silk_SMLAWB( coefs_syn_Q24[ i - 1 ], coefs_syn_Q24[ i ], lambda_Q16 ); 74885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org coefs_ana_Q24[ i - 1 ] = silk_SMLAWB( coefs_ana_Q24[ i - 1 ], coefs_ana_Q24[ i ], lambda_Q16 ); 75885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 76885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org lambda_Q16 = -lambda_Q16; 77885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org nom_Q16 = silk_SMLAWB( SILK_FIX_CONST( 1.0, 16 ), -(opus_int32)lambda_Q16, lambda_Q16 ); 78885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org den_Q24 = silk_SMLAWB( SILK_FIX_CONST( 1.0, 24 ), coefs_syn_Q24[ 0 ], lambda_Q16 ); 79885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org gain_syn_Q16 = silk_DIV32_varQ( nom_Q16, den_Q24, 24 ); 80885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org den_Q24 = silk_SMLAWB( SILK_FIX_CONST( 1.0, 24 ), coefs_ana_Q24[ 0 ], lambda_Q16 ); 81885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org gain_ana_Q16 = silk_DIV32_varQ( nom_Q16, den_Q24, 24 ); 82885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( i = 0; i < order; i++ ) { 83885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org coefs_syn_Q24[ i ] = silk_SMULWW( gain_syn_Q16, coefs_syn_Q24[ i ] ); 84885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org coefs_ana_Q24[ i ] = silk_SMULWW( gain_ana_Q16, coefs_ana_Q24[ i ] ); 85885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 86885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 87885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( iter = 0; iter < 10; iter++ ) { 88885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Find maximum absolute value */ 89885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org maxabs_Q24 = -1; 90885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( i = 0; i < order; i++ ) { 91885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org tmp = silk_max( silk_abs_int32( coefs_syn_Q24[ i ] ), silk_abs_int32( coefs_ana_Q24[ i ] ) ); 92885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( tmp > maxabs_Q24 ) { 93885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org maxabs_Q24 = tmp; 94885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org ind = i; 95885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 96885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 97885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( maxabs_Q24 <= limit_Q24 ) { 98885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Coefficients are within range - done */ 99885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org return; 100885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 101885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 102885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Convert back to true warped coefficients */ 103885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( i = 1; i < order; i++ ) { 104885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org coefs_syn_Q24[ i - 1 ] = silk_SMLAWB( coefs_syn_Q24[ i - 1 ], coefs_syn_Q24[ i ], lambda_Q16 ); 105885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org coefs_ana_Q24[ i - 1 ] = silk_SMLAWB( coefs_ana_Q24[ i - 1 ], coefs_ana_Q24[ i ], lambda_Q16 ); 106885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 107885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org gain_syn_Q16 = silk_INVERSE32_varQ( gain_syn_Q16, 32 ); 108885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org gain_ana_Q16 = silk_INVERSE32_varQ( gain_ana_Q16, 32 ); 109885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( i = 0; i < order; i++ ) { 110885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org coefs_syn_Q24[ i ] = silk_SMULWW( gain_syn_Q16, coefs_syn_Q24[ i ] ); 111885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org coefs_ana_Q24[ i ] = silk_SMULWW( gain_ana_Q16, coefs_ana_Q24[ i ] ); 112885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 113885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 114885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Apply bandwidth expansion */ 115885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org chirp_Q16 = SILK_FIX_CONST( 0.99, 16 ) - silk_DIV32_varQ( 116885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_SMULWB( maxabs_Q24 - limit_Q24, silk_SMLABB( SILK_FIX_CONST( 0.8, 10 ), SILK_FIX_CONST( 0.1, 10 ), iter ) ), 117885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_MUL( maxabs_Q24, ind + 1 ), 22 ); 118885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_bwexpander_32( coefs_syn_Q24, order, chirp_Q16 ); 119885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_bwexpander_32( coefs_ana_Q24, order, chirp_Q16 ); 120885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 121885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Convert to monic warped coefficients */ 122885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org lambda_Q16 = -lambda_Q16; 123885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( i = order - 1; i > 0; i-- ) { 124885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org coefs_syn_Q24[ i - 1 ] = silk_SMLAWB( coefs_syn_Q24[ i - 1 ], coefs_syn_Q24[ i ], lambda_Q16 ); 125885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org coefs_ana_Q24[ i - 1 ] = silk_SMLAWB( coefs_ana_Q24[ i - 1 ], coefs_ana_Q24[ i ], lambda_Q16 ); 126885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 127885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org lambda_Q16 = -lambda_Q16; 128885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org nom_Q16 = silk_SMLAWB( SILK_FIX_CONST( 1.0, 16 ), -(opus_int32)lambda_Q16, lambda_Q16 ); 129885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org den_Q24 = silk_SMLAWB( SILK_FIX_CONST( 1.0, 24 ), coefs_syn_Q24[ 0 ], lambda_Q16 ); 130885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org gain_syn_Q16 = silk_DIV32_varQ( nom_Q16, den_Q24, 24 ); 131885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org den_Q24 = silk_SMLAWB( SILK_FIX_CONST( 1.0, 24 ), coefs_ana_Q24[ 0 ], lambda_Q16 ); 132885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org gain_ana_Q16 = silk_DIV32_varQ( nom_Q16, den_Q24, 24 ); 133885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( i = 0; i < order; i++ ) { 134885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org coefs_syn_Q24[ i ] = silk_SMULWW( gain_syn_Q16, coefs_syn_Q24[ i ] ); 135885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org coefs_ana_Q24[ i ] = silk_SMULWW( gain_ana_Q16, coefs_ana_Q24[ i ] ); 136885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 137885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 138885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_assert( 0 ); 139885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 140885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 141885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/**************************************************************/ 142885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/* Compute noise shaping coefficients and initial gain values */ 143885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org/**************************************************************/ 144885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.orgvoid silk_noise_shape_analysis_FIX( 145885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_encoder_state_FIX *psEnc, /* I/O Encoder state FIX */ 146885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_encoder_control_FIX *psEncCtrl, /* I/O Encoder control FIX */ 147885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org const opus_int16 *pitch_res, /* I LPC residual from pitch analysis */ 1483c3902f0ac13428394f14f78f0fab05ef3468d69tlegrand@google.com const opus_int16 *x, /* I Input signal [ frame_length + la_shape ] */ 1493c3902f0ac13428394f14f78f0fab05ef3468d69tlegrand@google.com int arch /* I Run-time architecture */ 150885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org) 151885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org{ 152885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_shape_state_FIX *psShapeSt = &psEnc->sShape; 153885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int k, i, nSamples, Qnrg, b_Q14, warping_Q16, scale = 0; 154885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 SNR_adj_dB_Q7, HarmBoost_Q16, HarmShapeGain_Q16, Tilt_Q16, tmp32; 155885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 nrg, pre_nrg_Q30, log_energy_Q7, log_energy_prev_Q7, energy_variation_Q7; 156885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 delta_Q16, BWExp1_Q16, BWExp2_Q16, gain_mult_Q16, gain_add_Q16, strength_Q16, b_Q8; 157885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 auto_corr[ MAX_SHAPE_LPC_ORDER + 1 ]; 158885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 refl_coef_Q16[ MAX_SHAPE_LPC_ORDER ]; 159885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 AR1_Q24[ MAX_SHAPE_LPC_ORDER ]; 160885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int32 AR2_Q24[ MAX_SHAPE_LPC_ORDER ]; 161e3ea049fcaee2247e45f0ce793d4313babb4ef69tlegrand@chromium.org VARDECL( opus_int16, x_windowed ); 162885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org const opus_int16 *x_ptr, *pitch_res_ptr; 163e3ea049fcaee2247e45f0ce793d4313babb4ef69tlegrand@chromium.org SAVE_STACK; 164885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 165885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Point to start of first LPC analysis block */ 166885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org x_ptr = x - psEnc->sCmn.la_shape; 167885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 168885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /****************/ 169885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* GAIN CONTROL */ 170885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /****************/ 171885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SNR_adj_dB_Q7 = psEnc->sCmn.SNR_dB_Q7; 172885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 173885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Input quality is the average of the quality in the lowest two VAD bands */ 174885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->input_quality_Q14 = ( opus_int )silk_RSHIFT( (opus_int32)psEnc->sCmn.input_quality_bands_Q15[ 0 ] 175885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org + psEnc->sCmn.input_quality_bands_Q15[ 1 ], 2 ); 176885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 177885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Coding quality level, between 0.0_Q0 and 1.0_Q0, but in Q14 */ 178885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->coding_quality_Q14 = silk_RSHIFT( silk_sigm_Q15( silk_RSHIFT_ROUND( SNR_adj_dB_Q7 - 179885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SILK_FIX_CONST( 20.0, 7 ), 4 ) ), 1 ); 180885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 181885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Reduce coding SNR during low speech activity */ 182885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( psEnc->sCmn.useCBR == 0 ) { 183885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org b_Q8 = SILK_FIX_CONST( 1.0, 8 ) - psEnc->sCmn.speech_activity_Q8; 184885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org b_Q8 = silk_SMULWB( silk_LSHIFT( b_Q8, 8 ), b_Q8 ); 185885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SNR_adj_dB_Q7 = silk_SMLAWB( SNR_adj_dB_Q7, 186885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_SMULBB( SILK_FIX_CONST( -BG_SNR_DECR_dB, 7 ) >> ( 4 + 1 ), b_Q8 ), /* Q11*/ 187885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_SMULWB( SILK_FIX_CONST( 1.0, 14 ) + psEncCtrl->input_quality_Q14, psEncCtrl->coding_quality_Q14 ) ); /* Q12*/ 188885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 189885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 190885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( psEnc->sCmn.indices.signalType == TYPE_VOICED ) { 191885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Reduce gains for periodic signals */ 192885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SNR_adj_dB_Q7 = silk_SMLAWB( SNR_adj_dB_Q7, SILK_FIX_CONST( HARM_SNR_INCR_dB, 8 ), psEnc->LTPCorr_Q15 ); 193885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else { 194885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* For unvoiced signals and low-quality input, adjust the quality slower than SNR_dB setting */ 195885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SNR_adj_dB_Q7 = silk_SMLAWB( SNR_adj_dB_Q7, 196885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_SMLAWB( SILK_FIX_CONST( 6.0, 9 ), -SILK_FIX_CONST( 0.4, 18 ), psEnc->sCmn.SNR_dB_Q7 ), 197885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SILK_FIX_CONST( 1.0, 14 ) - psEncCtrl->input_quality_Q14 ); 198885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 199885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 200885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /*************************/ 201885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* SPARSENESS PROCESSING */ 202885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /*************************/ 203885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Set quantizer offset */ 204885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( psEnc->sCmn.indices.signalType == TYPE_VOICED ) { 2056b6bee25314cfac02cc555cddedb9680c63a26d6sergeyu@chromium.org /* Initially set to 0; may be overruled in process_gains(..) */ 206885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEnc->sCmn.indices.quantOffsetType = 0; 207885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->sparseness_Q8 = 0; 208885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else { 209885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Sparseness measure, based on relative fluctuations of energy per 2 milliseconds */ 210885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org nSamples = silk_LSHIFT( psEnc->sCmn.fs_kHz, 1 ); 211885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org energy_variation_Q7 = 0; 212885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org log_energy_prev_Q7 = 0; 213885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org pitch_res_ptr = pitch_res; 214885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( k = 0; k < silk_SMULBB( SUB_FRAME_LENGTH_MS, psEnc->sCmn.nb_subfr ) / 2; k++ ) { 215885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_sum_sqr_shift( &nrg, &scale, pitch_res_ptr, nSamples ); 216885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org nrg += silk_RSHIFT( nSamples, scale ); /* Q(-scale)*/ 217885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 218885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org log_energy_Q7 = silk_lin2log( nrg ); 219885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( k > 0 ) { 220885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org energy_variation_Q7 += silk_abs( log_energy_Q7 - log_energy_prev_Q7 ); 221885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 222885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org log_energy_prev_Q7 = log_energy_Q7; 223885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org pitch_res_ptr += nSamples; 224885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 225885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 226885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->sparseness_Q8 = silk_RSHIFT( silk_sigm_Q15( silk_SMULWB( energy_variation_Q7 - 227885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SILK_FIX_CONST( 5.0, 7 ), SILK_FIX_CONST( 0.1, 16 ) ) ), 7 ); 228885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 229885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Set quantization offset depending on sparseness measure */ 230885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( psEncCtrl->sparseness_Q8 > SILK_FIX_CONST( SPARSENESS_THRESHOLD_QNT_OFFSET, 8 ) ) { 231885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEnc->sCmn.indices.quantOffsetType = 0; 232885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else { 233885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEnc->sCmn.indices.quantOffsetType = 1; 234885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 235885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 236885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Increase coding SNR for sparse signals */ 237885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SNR_adj_dB_Q7 = silk_SMLAWB( SNR_adj_dB_Q7, SILK_FIX_CONST( SPARSE_SNR_INCR_dB, 15 ), psEncCtrl->sparseness_Q8 - SILK_FIX_CONST( 0.5, 8 ) ); 238885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 239885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 240885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /*******************************/ 241885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Control bandwidth expansion */ 242885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /*******************************/ 243885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* More BWE for signals with high prediction gain */ 244885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org strength_Q16 = silk_SMULWB( psEncCtrl->predGain_Q16, SILK_FIX_CONST( FIND_PITCH_WHITE_NOISE_FRACTION, 16 ) ); 245885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org BWExp1_Q16 = BWExp2_Q16 = silk_DIV32_varQ( SILK_FIX_CONST( BANDWIDTH_EXPANSION, 16 ), 246885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_SMLAWW( SILK_FIX_CONST( 1.0, 16 ), strength_Q16, strength_Q16 ), 16 ); 247885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org delta_Q16 = silk_SMULWB( SILK_FIX_CONST( 1.0, 16 ) - silk_SMULBB( 3, psEncCtrl->coding_quality_Q14 ), 248885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SILK_FIX_CONST( LOW_RATE_BANDWIDTH_EXPANSION_DELTA, 16 ) ); 249885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org BWExp1_Q16 = silk_SUB32( BWExp1_Q16, delta_Q16 ); 250885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org BWExp2_Q16 = silk_ADD32( BWExp2_Q16, delta_Q16 ); 251885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* BWExp1 will be applied after BWExp2, so make it relative */ 252885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org BWExp1_Q16 = silk_DIV32_16( silk_LSHIFT( BWExp1_Q16, 14 ), silk_RSHIFT( BWExp2_Q16, 2 ) ); 253885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 254885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( psEnc->sCmn.warping_Q16 > 0 ) { 255885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Slightly more warping in analysis will move quantization noise up in frequency, where it's better masked */ 256885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org warping_Q16 = silk_SMLAWB( psEnc->sCmn.warping_Q16, (opus_int32)psEncCtrl->coding_quality_Q14, SILK_FIX_CONST( 0.01, 18 ) ); 257885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else { 258885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org warping_Q16 = 0; 259885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 260885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 261885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /********************************************/ 262885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Compute noise shaping AR coefs and gains */ 263885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /********************************************/ 264e3ea049fcaee2247e45f0ce793d4313babb4ef69tlegrand@chromium.org ALLOC( x_windowed, psEnc->sCmn.shapeWinLength, opus_int16 ); 265885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( k = 0; k < psEnc->sCmn.nb_subfr; k++ ) { 266885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Apply window: sine slope followed by flat part followed by cosine slope */ 267885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int shift, slope_part, flat_part; 268885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org flat_part = psEnc->sCmn.fs_kHz * 3; 269885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org slope_part = silk_RSHIFT( psEnc->sCmn.shapeWinLength - flat_part, 1 ); 270885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 271885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_apply_sine_window( x_windowed, x_ptr, 1, slope_part ); 272885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org shift = slope_part; 273885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_memcpy( x_windowed + shift, x_ptr + shift, flat_part * sizeof(opus_int16) ); 274885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org shift += flat_part; 275885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_apply_sine_window( x_windowed + shift, x_ptr + shift, 2, slope_part ); 276885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 277885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Update pointer: next LPC analysis block */ 278885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org x_ptr += psEnc->sCmn.subfr_length; 279885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 280885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( psEnc->sCmn.warping_Q16 > 0 ) { 281885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Calculate warped auto correlation */ 282885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_warped_autocorrelation_FIX( auto_corr, &scale, x_windowed, warping_Q16, psEnc->sCmn.shapeWinLength, psEnc->sCmn.shapingLPCOrder ); 283885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else { 284885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Calculate regular auto correlation */ 2853c3902f0ac13428394f14f78f0fab05ef3468d69tlegrand@google.com silk_autocorr( auto_corr, &scale, x_windowed, psEnc->sCmn.shapeWinLength, psEnc->sCmn.shapingLPCOrder + 1, arch ); 286885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 287885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 288885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Add white noise, as a fraction of energy */ 289885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org auto_corr[0] = silk_ADD32( auto_corr[0], silk_max_32( silk_SMULWB( silk_RSHIFT( auto_corr[ 0 ], 4 ), 290885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SILK_FIX_CONST( SHAPE_WHITE_NOISE_FRACTION, 20 ) ), 1 ) ); 291885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 292885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Calculate the reflection coefficients using schur */ 293885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org nrg = silk_schur64( refl_coef_Q16, auto_corr, psEnc->sCmn.shapingLPCOrder ); 294885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_assert( nrg >= 0 ); 295885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 296885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Convert reflection coefficients to prediction coefficients */ 297885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_k2a_Q16( AR2_Q24, refl_coef_Q16, psEnc->sCmn.shapingLPCOrder ); 298885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 299885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org Qnrg = -scale; /* range: -12...30*/ 300885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_assert( Qnrg >= -12 ); 301885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_assert( Qnrg <= 30 ); 302885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 303885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Make sure that Qnrg is an even number */ 304885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( Qnrg & 1 ) { 305885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org Qnrg -= 1; 306885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org nrg >>= 1; 307885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 308885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 309885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org tmp32 = silk_SQRT_APPROX( nrg ); 310885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org Qnrg >>= 1; /* range: -6...15*/ 311885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 312885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->Gains_Q16[ k ] = silk_LSHIFT_SAT32( tmp32, 16 - Qnrg ); 313885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 314885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( psEnc->sCmn.warping_Q16 > 0 ) { 315885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Adjust gain for warping */ 316885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org gain_mult_Q16 = warped_gain( AR2_Q24, warping_Q16, psEnc->sCmn.shapingLPCOrder ); 317885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_assert( psEncCtrl->Gains_Q16[ k ] >= 0 ); 318885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if ( silk_SMULWW( silk_RSHIFT_ROUND( psEncCtrl->Gains_Q16[ k ], 1 ), gain_mult_Q16 ) >= ( silk_int32_MAX >> 1 ) ) { 319885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->Gains_Q16[ k ] = silk_int32_MAX; 320885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else { 321885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->Gains_Q16[ k ] = silk_SMULWW( psEncCtrl->Gains_Q16[ k ], gain_mult_Q16 ); 322885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 323885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 324885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 325885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Bandwidth expansion for synthesis filter shaping */ 326885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_bwexpander_32( AR2_Q24, psEnc->sCmn.shapingLPCOrder, BWExp2_Q16 ); 327885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 328885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Compute noise shaping filter coefficients */ 329885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_memcpy( AR1_Q24, AR2_Q24, psEnc->sCmn.shapingLPCOrder * sizeof( opus_int32 ) ); 330885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 331885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Bandwidth expansion for analysis filter shaping */ 332885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_assert( BWExp1_Q16 <= SILK_FIX_CONST( 1.0, 16 ) ); 333885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_bwexpander_32( AR1_Q24, psEnc->sCmn.shapingLPCOrder, BWExp1_Q16 ); 334885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 335885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Ratio of prediction gains, in energy domain */ 336885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org pre_nrg_Q30 = silk_LPC_inverse_pred_gain_Q24( AR2_Q24, psEnc->sCmn.shapingLPCOrder ); 337885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org nrg = silk_LPC_inverse_pred_gain_Q24( AR1_Q24, psEnc->sCmn.shapingLPCOrder ); 338885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 339885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /*psEncCtrl->GainsPre[ k ] = 1.0f - 0.7f * ( 1.0f - pre_nrg / nrg ) = 0.3f + 0.7f * pre_nrg / nrg;*/ 340885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org pre_nrg_Q30 = silk_LSHIFT32( silk_SMULWB( pre_nrg_Q30, SILK_FIX_CONST( 0.7, 15 ) ), 1 ); 341885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->GainsPre_Q14[ k ] = ( opus_int ) SILK_FIX_CONST( 0.3, 14 ) + silk_DIV32_varQ( pre_nrg_Q30, nrg, 14 ); 342885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 343885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Convert to monic warped prediction coefficients and limit absolute values */ 344885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org limit_warped_coefs( AR2_Q24, AR1_Q24, warping_Q16, SILK_FIX_CONST( 3.999, 24 ), psEnc->sCmn.shapingLPCOrder ); 345885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 346885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Convert from Q24 to Q13 and store in int16 */ 347885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( i = 0; i < psEnc->sCmn.shapingLPCOrder; i++ ) { 348885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->AR1_Q13[ k * MAX_SHAPE_LPC_ORDER + i ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( AR1_Q24[ i ], 11 ) ); 349885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->AR2_Q13[ k * MAX_SHAPE_LPC_ORDER + i ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( AR2_Q24[ i ], 11 ) ); 350885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 351885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 352885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 353885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /*****************/ 354885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Gain tweaking */ 355885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /*****************/ 356885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Increase gains during low speech activity and put lower limit on gains */ 357885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org gain_mult_Q16 = silk_log2lin( -silk_SMLAWB( -SILK_FIX_CONST( 16.0, 7 ), SNR_adj_dB_Q7, SILK_FIX_CONST( 0.16, 16 ) ) ); 358885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org gain_add_Q16 = silk_log2lin( silk_SMLAWB( SILK_FIX_CONST( 16.0, 7 ), SILK_FIX_CONST( MIN_QGAIN_DB, 7 ), SILK_FIX_CONST( 0.16, 16 ) ) ); 359885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_assert( gain_mult_Q16 > 0 ); 360885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( k = 0; k < psEnc->sCmn.nb_subfr; k++ ) { 361885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->Gains_Q16[ k ] = silk_SMULWW( psEncCtrl->Gains_Q16[ k ], gain_mult_Q16 ); 362885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_assert( psEncCtrl->Gains_Q16[ k ] >= 0 ); 363885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->Gains_Q16[ k ] = silk_ADD_POS_SAT32( psEncCtrl->Gains_Q16[ k ], gain_add_Q16 ); 364885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 365885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 366885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org gain_mult_Q16 = SILK_FIX_CONST( 1.0, 16 ) + silk_RSHIFT_ROUND( silk_MLA( SILK_FIX_CONST( INPUT_TILT, 26 ), 367885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->coding_quality_Q14, SILK_FIX_CONST( HIGH_RATE_INPUT_TILT, 12 ) ), 10 ); 368885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( k = 0; k < psEnc->sCmn.nb_subfr; k++ ) { 369885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->GainsPre_Q14[ k ] = silk_SMULWB( gain_mult_Q16, psEncCtrl->GainsPre_Q14[ k ] ); 370885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 371885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 372885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /************************************************/ 373885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Control low-frequency shaping and noise tilt */ 374885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /************************************************/ 375885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Less low frequency shaping for noisy inputs */ 376885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org strength_Q16 = silk_MUL( SILK_FIX_CONST( LOW_FREQ_SHAPING, 4 ), silk_SMLAWB( SILK_FIX_CONST( 1.0, 12 ), 377885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SILK_FIX_CONST( LOW_QUALITY_LOW_FREQ_SHAPING_DECR, 13 ), psEnc->sCmn.input_quality_bands_Q15[ 0 ] - SILK_FIX_CONST( 1.0, 15 ) ) ); 378885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org strength_Q16 = silk_RSHIFT( silk_MUL( strength_Q16, psEnc->sCmn.speech_activity_Q8 ), 8 ); 379885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( psEnc->sCmn.indices.signalType == TYPE_VOICED ) { 380885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Reduce low frequencies quantization noise for periodic signals, depending on pitch lag */ 381885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /*f = 400; freqz([1, -0.98 + 2e-4 * f], [1, -0.97 + 7e-4 * f], 2^12, Fs); axis([0, 1000, -10, 1])*/ 382885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org opus_int fs_kHz_inv = silk_DIV32_16( SILK_FIX_CONST( 0.2, 14 ), psEnc->sCmn.fs_kHz ); 383885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( k = 0; k < psEnc->sCmn.nb_subfr; k++ ) { 384885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org b_Q14 = fs_kHz_inv + silk_DIV32_16( SILK_FIX_CONST( 3.0, 14 ), psEncCtrl->pitchL[ k ] ); 385885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Pack two coefficients in one int32 */ 386885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->LF_shp_Q14[ k ] = silk_LSHIFT( SILK_FIX_CONST( 1.0, 14 ) - b_Q14 - silk_SMULWB( strength_Q16, b_Q14 ), 16 ); 387885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->LF_shp_Q14[ k ] |= (opus_uint16)( b_Q14 - SILK_FIX_CONST( 1.0, 14 ) ); 388885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 389885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_assert( SILK_FIX_CONST( HARM_HP_NOISE_COEF, 24 ) < SILK_FIX_CONST( 0.5, 24 ) ); /* Guarantees that second argument to SMULWB() is within range of an opus_int16*/ 390885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org Tilt_Q16 = - SILK_FIX_CONST( HP_NOISE_COEF, 16 ) - 391885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_SMULWB( SILK_FIX_CONST( 1.0, 16 ) - SILK_FIX_CONST( HP_NOISE_COEF, 16 ), 392885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_SMULWB( SILK_FIX_CONST( HARM_HP_NOISE_COEF, 24 ), psEnc->sCmn.speech_activity_Q8 ) ); 393885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else { 394885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org b_Q14 = silk_DIV32_16( 21299, psEnc->sCmn.fs_kHz ); /* 1.3_Q0 = 21299_Q14*/ 395885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Pack two coefficients in one int32 */ 396885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->LF_shp_Q14[ 0 ] = silk_LSHIFT( SILK_FIX_CONST( 1.0, 14 ) - b_Q14 - 397885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_SMULWB( strength_Q16, silk_SMULWB( SILK_FIX_CONST( 0.6, 16 ), b_Q14 ) ), 16 ); 398885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->LF_shp_Q14[ 0 ] |= (opus_uint16)( b_Q14 - SILK_FIX_CONST( 1.0, 14 ) ); 399885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( k = 1; k < psEnc->sCmn.nb_subfr; k++ ) { 400885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->LF_shp_Q14[ k ] = psEncCtrl->LF_shp_Q14[ 0 ]; 401885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 402885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org Tilt_Q16 = -SILK_FIX_CONST( HP_NOISE_COEF, 16 ); 403885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 404885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 405885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /****************************/ 406885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* HARMONIC SHAPING CONTROL */ 407885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /****************************/ 408885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Control boosting of harmonic frequencies */ 409885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org HarmBoost_Q16 = silk_SMULWB( silk_SMULWB( SILK_FIX_CONST( 1.0, 17 ) - silk_LSHIFT( psEncCtrl->coding_quality_Q14, 3 ), 410885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEnc->LTPCorr_Q15 ), SILK_FIX_CONST( LOW_RATE_HARMONIC_BOOST, 16 ) ); 411885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 412885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* More harmonic boost for noisy input signals */ 413885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org HarmBoost_Q16 = silk_SMLAWB( HarmBoost_Q16, 414885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SILK_FIX_CONST( 1.0, 16 ) - silk_LSHIFT( psEncCtrl->input_quality_Q14, 2 ), SILK_FIX_CONST( LOW_INPUT_QUALITY_HARMONIC_BOOST, 16 ) ); 415885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 416885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org if( USE_HARM_SHAPING && psEnc->sCmn.indices.signalType == TYPE_VOICED ) { 417885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* More harmonic noise shaping for high bitrates or noisy input */ 418885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org HarmShapeGain_Q16 = silk_SMLAWB( SILK_FIX_CONST( HARMONIC_SHAPING, 16 ), 419885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org SILK_FIX_CONST( 1.0, 16 ) - silk_SMULWB( SILK_FIX_CONST( 1.0, 18 ) - silk_LSHIFT( psEncCtrl->coding_quality_Q14, 4 ), 420885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->input_quality_Q14 ), SILK_FIX_CONST( HIGH_RATE_OR_LOW_QUALITY_HARMONIC_SHAPING, 16 ) ); 421885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 422885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Less harmonic noise shaping for less periodic signals */ 423885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org HarmShapeGain_Q16 = silk_SMULWB( silk_LSHIFT( HarmShapeGain_Q16, 1 ), 424885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_SQRT_APPROX( silk_LSHIFT( psEnc->LTPCorr_Q15, 15 ) ) ); 425885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } else { 426885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org HarmShapeGain_Q16 = 0; 427885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 428885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 429885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /*************************/ 430885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /* Smooth over subframes */ 431885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org /*************************/ 432885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org for( k = 0; k < MAX_NB_SUBFR; k++ ) { 433885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psShapeSt->HarmBoost_smth_Q16 = 434885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_SMLAWB( psShapeSt->HarmBoost_smth_Q16, HarmBoost_Q16 - psShapeSt->HarmBoost_smth_Q16, SILK_FIX_CONST( SUBFR_SMTH_COEF, 16 ) ); 435885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psShapeSt->HarmShapeGain_smth_Q16 = 436885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_SMLAWB( psShapeSt->HarmShapeGain_smth_Q16, HarmShapeGain_Q16 - psShapeSt->HarmShapeGain_smth_Q16, SILK_FIX_CONST( SUBFR_SMTH_COEF, 16 ) ); 437885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psShapeSt->Tilt_smth_Q16 = 438885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org silk_SMLAWB( psShapeSt->Tilt_smth_Q16, Tilt_Q16 - psShapeSt->Tilt_smth_Q16, SILK_FIX_CONST( SUBFR_SMTH_COEF, 16 ) ); 439885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org 440885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->HarmBoost_Q14[ k ] = ( opus_int )silk_RSHIFT_ROUND( psShapeSt->HarmBoost_smth_Q16, 2 ); 441885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->HarmShapeGain_Q14[ k ] = ( opus_int )silk_RSHIFT_ROUND( psShapeSt->HarmShapeGain_smth_Q16, 2 ); 442885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org psEncCtrl->Tilt_Q14[ k ] = ( opus_int )silk_RSHIFT_ROUND( psShapeSt->Tilt_smth_Q16, 2 ); 443885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org } 444e3ea049fcaee2247e45f0ce793d4313babb4ef69tlegrand@chromium.org RESTORE_STACK; 445885f2ff5a7a7d6a73432d26a6c0ae9147e6b452sergeyu@chromium.org} 446