michael@0: /***********************************************************************
michael@0: Copyright (c) 2006-2011, Skype Limited. All rights reserved.
michael@0: Redistribution and use in source and binary forms, with or without
michael@0: modification, are permitted provided that the following conditions
michael@0: are met:
michael@0: - Redistributions of source code must retain the above copyright notice,
michael@0: this list of conditions and the following disclaimer.
michael@0: - Redistributions in binary form must reproduce the above copyright
michael@0: notice, this list of conditions and the following disclaimer in the
michael@0: documentation and/or other materials provided with the distribution.
michael@0: - Neither the name of Internet Society, IETF or IETF Trust, nor the
michael@0: names of specific contributors, may be used to endorse or promote
michael@0: products derived from this software without specific prior written
michael@0: permission.
michael@0: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
michael@0: AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
michael@0: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
michael@0: ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
michael@0: LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
michael@0: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
michael@0: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
michael@0: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
michael@0: CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
michael@0: ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
michael@0: POSSIBILITY OF SUCH DAMAGE.
michael@0: ***********************************************************************/
michael@0: 
michael@0: #ifdef HAVE_CONFIG_H
michael@0: #include "config.h"
michael@0: #endif
michael@0: 
michael@0: #include "main_FLP.h"
michael@0: 
michael@0: /* Wrappers. Calls flp / fix code */
michael@0: 
michael@0: /* Convert AR filter coefficients to NLSF parameters */
michael@0: void silk_A2NLSF_FLP(
michael@0:     opus_int16                      *NLSF_Q15,                          /* O    NLSF vector      [ LPC_order ]              */
michael@0:     const silk_float                *pAR,                               /* I    LPC coefficients [ LPC_order ]              */
michael@0:     const opus_int                  LPC_order                           /* I    LPC order                                   */
michael@0: )
michael@0: {
michael@0:     opus_int   i;
michael@0:     opus_int32 a_fix_Q16[ MAX_LPC_ORDER ];
michael@0: 
michael@0:     for( i = 0; i < LPC_order; i++ ) {
michael@0:         a_fix_Q16[ i ] = silk_float2int( pAR[ i ] * 65536.0f );
michael@0:     }
michael@0: 
michael@0:     silk_A2NLSF( NLSF_Q15, a_fix_Q16, LPC_order );
michael@0: }
michael@0: 
michael@0: /* Convert LSF parameters to AR prediction filter coefficients */
michael@0: void silk_NLSF2A_FLP(
michael@0:     silk_float                      *pAR,                               /* O    LPC coefficients [ LPC_order ]              */
michael@0:     const opus_int16                *NLSF_Q15,                          /* I    NLSF vector      [ LPC_order ]              */
michael@0:     const opus_int                  LPC_order                           /* I    LPC order                                   */
michael@0: )
michael@0: {
michael@0:     opus_int   i;
michael@0:     opus_int16 a_fix_Q12[ MAX_LPC_ORDER ];
michael@0: 
michael@0:     silk_NLSF2A( a_fix_Q12, NLSF_Q15, LPC_order );
michael@0: 
michael@0:     for( i = 0; i < LPC_order; i++ ) {
michael@0:         pAR[ i ] = ( silk_float )a_fix_Q12[ i ] * ( 1.0f / 4096.0f );
michael@0:     }
michael@0: }
michael@0: 
michael@0: /******************************************/
michael@0: /* Floating-point NLSF processing wrapper */
michael@0: /******************************************/
michael@0: void silk_process_NLSFs_FLP(
michael@0:     silk_encoder_state              *psEncC,                            /* I/O  Encoder state                               */
michael@0:     silk_float                      PredCoef[ 2 ][ MAX_LPC_ORDER ],     /* O    Prediction coefficients                     */
michael@0:     opus_int16                      NLSF_Q15[      MAX_LPC_ORDER ],     /* I/O  Normalized LSFs (quant out) (0 - (2^15-1))  */
michael@0:     const opus_int16                prev_NLSF_Q15[ MAX_LPC_ORDER ]      /* I    Previous Normalized LSFs (0 - (2^15-1))     */
michael@0: )
michael@0: {
michael@0:     opus_int     i, j;
michael@0:     opus_int16   PredCoef_Q12[ 2 ][ MAX_LPC_ORDER ];
michael@0: 
michael@0:     silk_process_NLSFs( psEncC, PredCoef_Q12, NLSF_Q15, prev_NLSF_Q15);
michael@0: 
michael@0:     for( j = 0; j < 2; j++ ) {
michael@0:         for( i = 0; i < psEncC->predictLPCOrder; i++ ) {
michael@0:             PredCoef[ j ][ i ] = ( silk_float )PredCoef_Q12[ j ][ i ] * ( 1.0f / 4096.0f );
michael@0:         }
michael@0:     }
michael@0: }
michael@0: 
michael@0: /****************************************/
michael@0: /* Floating-point Silk NSQ wrapper      */
michael@0: /****************************************/
michael@0: void silk_NSQ_wrapper_FLP(
michael@0:     silk_encoder_state_FLP          *psEnc,                             /* I/O  Encoder state FLP                           */
michael@0:     silk_encoder_control_FLP        *psEncCtrl,                         /* I/O  Encoder control FLP                         */
michael@0:     SideInfoIndices                 *psIndices,                         /* I/O  Quantization indices                        */
michael@0:     silk_nsq_state                  *psNSQ,                             /* I/O  Noise Shaping Quantzation state             */
michael@0:     opus_int8                       pulses[],                           /* O    Quantized pulse signal                      */
michael@0:     const silk_float                x[]                                 /* I    Prefiltered input signal                    */
michael@0: )
michael@0: {
michael@0:     opus_int     i, j;
michael@0:     opus_int32   x_Q3[ MAX_FRAME_LENGTH ];
michael@0:     opus_int32   Gains_Q16[ MAX_NB_SUBFR ];
michael@0:     silk_DWORD_ALIGN opus_int16 PredCoef_Q12[ 2 ][ MAX_LPC_ORDER ];
michael@0:     opus_int16   LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ];
michael@0:     opus_int     LTP_scale_Q14;
michael@0: 
michael@0:     /* Noise shaping parameters */
michael@0:     opus_int16   AR2_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
michael@0:     opus_int32   LF_shp_Q14[ MAX_NB_SUBFR ];         /* Packs two int16 coefficients per int32 value             */
michael@0:     opus_int     Lambda_Q10;
michael@0:     opus_int     Tilt_Q14[ MAX_NB_SUBFR ];
michael@0:     opus_int     HarmShapeGain_Q14[ MAX_NB_SUBFR ];
michael@0: 
michael@0:     /* Convert control struct to fix control struct */
michael@0:     /* Noise shape parameters */
michael@0:     for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) {
michael@0:         for( j = 0; j < psEnc->sCmn.shapingLPCOrder; j++ ) {
michael@0:             AR2_Q13[ i * MAX_SHAPE_LPC_ORDER + j ] = silk_float2int( psEncCtrl->AR2[ i * MAX_SHAPE_LPC_ORDER + j ] * 8192.0f );
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) {
michael@0:         LF_shp_Q14[ i ] =   silk_LSHIFT32( silk_float2int( psEncCtrl->LF_AR_shp[ i ]     * 16384.0f ), 16 ) |
michael@0:                               (opus_uint16)silk_float2int( psEncCtrl->LF_MA_shp[ i ]     * 16384.0f );
michael@0:         Tilt_Q14[ i ]   =        (opus_int)silk_float2int( psEncCtrl->Tilt[ i ]          * 16384.0f );
michael@0:         HarmShapeGain_Q14[ i ] = (opus_int)silk_float2int( psEncCtrl->HarmShapeGain[ i ] * 16384.0f );
michael@0:     }
michael@0:     Lambda_Q10 = ( opus_int )silk_float2int( psEncCtrl->Lambda * 1024.0f );
michael@0: 
michael@0:     /* prediction and coding parameters */
michael@0:     for( i = 0; i < psEnc->sCmn.nb_subfr * LTP_ORDER; i++ ) {
michael@0:         LTPCoef_Q14[ i ] = (opus_int16)silk_float2int( psEncCtrl->LTPCoef[ i ] * 16384.0f );
michael@0:     }
michael@0: 
michael@0:     for( j = 0; j < 2; j++ ) {
michael@0:         for( i = 0; i < psEnc->sCmn.predictLPCOrder; i++ ) {
michael@0:             PredCoef_Q12[ j ][ i ] = (opus_int16)silk_float2int( psEncCtrl->PredCoef[ j ][ i ] * 4096.0f );
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) {
michael@0:         Gains_Q16[ i ] = silk_float2int( psEncCtrl->Gains[ i ] * 65536.0f );
michael@0:         silk_assert( Gains_Q16[ i ] > 0 );
michael@0:     }
michael@0: 
michael@0:     if( psIndices->signalType == TYPE_VOICED ) {
michael@0:         LTP_scale_Q14 = silk_LTPScales_table_Q14[ psIndices->LTP_scaleIndex ];
michael@0:     } else {
michael@0:         LTP_scale_Q14 = 0;
michael@0:     }
michael@0: 
michael@0:     /* Convert input to fix */
michael@0:     for( i = 0; i < psEnc->sCmn.frame_length; i++ ) {
michael@0:         x_Q3[ i ] = silk_float2int( 8.0f * x[ i ] );
michael@0:     }
michael@0: 
michael@0:     /* Call NSQ */
michael@0:     if( psEnc->sCmn.nStatesDelayedDecision > 1 || psEnc->sCmn.warping_Q16 > 0 ) {
michael@0:         silk_NSQ_del_dec( &psEnc->sCmn, psNSQ, psIndices, x_Q3, pulses, PredCoef_Q12[ 0 ], LTPCoef_Q14,
michael@0:             AR2_Q13, HarmShapeGain_Q14, Tilt_Q14, LF_shp_Q14, Gains_Q16, psEncCtrl->pitchL, Lambda_Q10, LTP_scale_Q14 );
michael@0:     } else {
michael@0:         silk_NSQ( &psEnc->sCmn, psNSQ, psIndices, x_Q3, pulses, PredCoef_Q12[ 0 ], LTPCoef_Q14,
michael@0:             AR2_Q13, HarmShapeGain_Q14, Tilt_Q14, LF_shp_Q14, Gains_Q16, psEncCtrl->pitchL, Lambda_Q10, LTP_scale_Q14 );
michael@0:     }
michael@0: }
michael@0: 
michael@0: /***********************************************/
michael@0: /* Floating-point Silk LTP quantiation wrapper */
michael@0: /***********************************************/
michael@0: void silk_quant_LTP_gains_FLP(
michael@0:     silk_float                      B[ MAX_NB_SUBFR * LTP_ORDER ],      /* I/O  (Un-)quantized LTP gains                    */
michael@0:     opus_int8                       cbk_index[ MAX_NB_SUBFR ],          /* O    Codebook index                              */
michael@0:     opus_int8                       *periodicity_index,                 /* O    Periodicity index                           */
michael@0:     opus_int32                      *sum_log_gain_Q7,                   /* I/O  Cumulative max prediction gain  */
michael@0:     const silk_float                W[ MAX_NB_SUBFR * LTP_ORDER * LTP_ORDER ], /* I    Error weights                        */
michael@0:     const opus_int                  mu_Q10,                             /* I    Mu value (R/D tradeoff)                     */
michael@0:     const opus_int                  lowComplexity,                      /* I    Flag for low complexity                     */
michael@0:     const opus_int                  nb_subfr                            /* I    number of subframes                         */
michael@0: )
michael@0: {
michael@0:     opus_int   i;
michael@0:     opus_int16 B_Q14[ MAX_NB_SUBFR * LTP_ORDER ];
michael@0:     opus_int32 W_Q18[ MAX_NB_SUBFR*LTP_ORDER*LTP_ORDER ];
michael@0: 
michael@0:     for( i = 0; i < nb_subfr * LTP_ORDER; i++ ) {
michael@0:         B_Q14[ i ] = (opus_int16)silk_float2int( B[ i ] * 16384.0f );
michael@0:     }
michael@0:     for( i = 0; i < nb_subfr * LTP_ORDER * LTP_ORDER; i++ ) {
michael@0:         W_Q18[ i ] = (opus_int32)silk_float2int( W[ i ] * 262144.0f );
michael@0:     }
michael@0: 
michael@0:     silk_quant_LTP_gains( B_Q14, cbk_index, periodicity_index, sum_log_gain_Q7, W_Q18, mu_Q10, lowComplexity, nb_subfr );
michael@0: 
michael@0:     for( i = 0; i < nb_subfr * LTP_ORDER; i++ ) {
michael@0:         B[ i ] = (silk_float)B_Q14[ i ] * ( 1.0f / 16384.0f );
michael@0:     }
michael@0: }