diff src/opus-1.3/silk/float/wrappers_FLP.c @ 69:7aeed7906520

Add Opus sources and macOS builds

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/opus-1.3/silk/float/wrappers_FLP.c	Wed Jan 23 13:48:08 2019 +0000
@@ -0,0 +1,207 @@
+/***********************************************************************
+Copyright (c) 2006-2011, Skype Limited. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+- Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+- Neither the name of Internet Society, IETF or IETF Trust, nor the
+names of specific contributors, may be used to endorse or promote
+products derived from this software without specific prior written
+permission.
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
+***********************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "main_FLP.h"
+
+/* Wrappers. Calls flp / fix code */
+
+/* Convert AR filter coefficients to NLSF parameters */
+void silk_A2NLSF_FLP(
+    opus_int16                      *NLSF_Q15,                          /* O    NLSF vector      [ LPC_order ]              */
+    const silk_float                *pAR,                               /* I    LPC coefficients [ LPC_order ]              */
+    const opus_int                  LPC_order                           /* I    LPC order                                   */
+)
+{
+    opus_int   i;
+    opus_int32 a_fix_Q16[ MAX_LPC_ORDER ];
+
+    for( i = 0; i < LPC_order; i++ ) {
+        a_fix_Q16[ i ] = silk_float2int( pAR[ i ] * 65536.0f );
+    }
+
+    silk_A2NLSF( NLSF_Q15, a_fix_Q16, LPC_order );
+}
+
+/* Convert LSF parameters to AR prediction filter coefficients */
+void silk_NLSF2A_FLP(
+    silk_float                      *pAR,                               /* O    LPC coefficients [ LPC_order ]              */
+    const opus_int16                *NLSF_Q15,                          /* I    NLSF vector      [ LPC_order ]              */
+    const opus_int                  LPC_order,                          /* I    LPC order                                   */
+    int                             arch                                /* I    Run-time architecture                       */
+)
+{
+    opus_int   i;
+    opus_int16 a_fix_Q12[ MAX_LPC_ORDER ];
+
+    silk_NLSF2A( a_fix_Q12, NLSF_Q15, LPC_order, arch );
+
+    for( i = 0; i < LPC_order; i++ ) {
+        pAR[ i ] = ( silk_float )a_fix_Q12[ i ] * ( 1.0f / 4096.0f );
+    }
+}
+
+/******************************************/
+/* Floating-point NLSF processing wrapper */
+/******************************************/
+void silk_process_NLSFs_FLP(
+    silk_encoder_state              *psEncC,                            /* I/O  Encoder state                               */
+    silk_float                      PredCoef[ 2 ][ MAX_LPC_ORDER ],     /* O    Prediction coefficients                     */
+    opus_int16                      NLSF_Q15[      MAX_LPC_ORDER ],     /* I/O  Normalized LSFs (quant out) (0 - (2^15-1))  */
+    const opus_int16                prev_NLSF_Q15[ MAX_LPC_ORDER ]      /* I    Previous Normalized LSFs (0 - (2^15-1))     */
+)
+{
+    opus_int     i, j;
+    opus_int16   PredCoef_Q12[ 2 ][ MAX_LPC_ORDER ];
+
+    silk_process_NLSFs( psEncC, PredCoef_Q12, NLSF_Q15, prev_NLSF_Q15);
+
+    for( j = 0; j < 2; j++ ) {
+        for( i = 0; i < psEncC->predictLPCOrder; i++ ) {
+            PredCoef[ j ][ i ] = ( silk_float )PredCoef_Q12[ j ][ i ] * ( 1.0f / 4096.0f );
+        }
+    }
+}
+
+/****************************************/
+/* Floating-point Silk NSQ wrapper      */
+/****************************************/
+void silk_NSQ_wrapper_FLP(
+    silk_encoder_state_FLP          *psEnc,                             /* I/O  Encoder state FLP                           */
+    silk_encoder_control_FLP        *psEncCtrl,                         /* I/O  Encoder control FLP                         */
+    SideInfoIndices                 *psIndices,                         /* I/O  Quantization indices                        */
+    silk_nsq_state                  *psNSQ,                             /* I/O  Noise Shaping Quantzation state             */
+    opus_int8                       pulses[],                           /* O    Quantized pulse signal                      */
+    const silk_float                x[]                                 /* I    Prefiltered input signal                    */
+)
+{
+    opus_int     i, j;
+    opus_int16   x16[ MAX_FRAME_LENGTH ];
+    opus_int32   Gains_Q16[ MAX_NB_SUBFR ];
+    silk_DWORD_ALIGN opus_int16 PredCoef_Q12[ 2 ][ MAX_LPC_ORDER ];
+    opus_int16   LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ];
+    opus_int     LTP_scale_Q14;
+
+    /* Noise shaping parameters */
+    opus_int16   AR_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ];
+    opus_int32   LF_shp_Q14[ MAX_NB_SUBFR ];         /* Packs two int16 coefficients per int32 value             */
+    opus_int     Lambda_Q10;
+    opus_int     Tilt_Q14[ MAX_NB_SUBFR ];
+    opus_int     HarmShapeGain_Q14[ MAX_NB_SUBFR ];
+
+    /* Convert control struct to fix control struct */
+    /* Noise shape parameters */
+    for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) {
+        for( j = 0; j < psEnc->sCmn.shapingLPCOrder; j++ ) {
+            AR_Q13[ i * MAX_SHAPE_LPC_ORDER + j ] = silk_float2int( psEncCtrl->AR[ i * MAX_SHAPE_LPC_ORDER + j ] * 8192.0f );
+        }
+    }
+
+    for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) {
+        LF_shp_Q14[ i ] =   silk_LSHIFT32( silk_float2int( psEncCtrl->LF_AR_shp[ i ]     * 16384.0f ), 16 ) |
+                              (opus_uint16)silk_float2int( psEncCtrl->LF_MA_shp[ i ]     * 16384.0f );
+        Tilt_Q14[ i ]   =        (opus_int)silk_float2int( psEncCtrl->Tilt[ i ]          * 16384.0f );
+        HarmShapeGain_Q14[ i ] = (opus_int)silk_float2int( psEncCtrl->HarmShapeGain[ i ] * 16384.0f );
+    }
+    Lambda_Q10 = ( opus_int )silk_float2int( psEncCtrl->Lambda * 1024.0f );
+
+    /* prediction and coding parameters */
+    for( i = 0; i < psEnc->sCmn.nb_subfr * LTP_ORDER; i++ ) {
+        LTPCoef_Q14[ i ] = (opus_int16)silk_float2int( psEncCtrl->LTPCoef[ i ] * 16384.0f );
+    }
+
+    for( j = 0; j < 2; j++ ) {
+        for( i = 0; i < psEnc->sCmn.predictLPCOrder; i++ ) {
+            PredCoef_Q12[ j ][ i ] = (opus_int16)silk_float2int( psEncCtrl->PredCoef[ j ][ i ] * 4096.0f );
+        }
+    }
+
+    for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) {
+        Gains_Q16[ i ] = silk_float2int( psEncCtrl->Gains[ i ] * 65536.0f );
+        silk_assert( Gains_Q16[ i ] > 0 );
+    }
+
+    if( psIndices->signalType == TYPE_VOICED ) {
+        LTP_scale_Q14 = silk_LTPScales_table_Q14[ psIndices->LTP_scaleIndex ];
+    } else {
+        LTP_scale_Q14 = 0;
+    }
+
+    /* Convert input to fix */
+    for( i = 0; i < psEnc->sCmn.frame_length; i++ ) {
+        x16[ i ] = silk_float2int( x[ i ] );
+    }
+
+    /* Call NSQ */
+    if( psEnc->sCmn.nStatesDelayedDecision > 1 || psEnc->sCmn.warping_Q16 > 0 ) {
+        silk_NSQ_del_dec( &psEnc->sCmn, psNSQ, psIndices, x16, pulses, PredCoef_Q12[ 0 ], LTPCoef_Q14,
+            AR_Q13, HarmShapeGain_Q14, Tilt_Q14, LF_shp_Q14, Gains_Q16, psEncCtrl->pitchL, Lambda_Q10, LTP_scale_Q14, psEnc->sCmn.arch );
+    } else {
+        silk_NSQ( &psEnc->sCmn, psNSQ, psIndices, x16, pulses, PredCoef_Q12[ 0 ], LTPCoef_Q14,
+            AR_Q13, HarmShapeGain_Q14, Tilt_Q14, LF_shp_Q14, Gains_Q16, psEncCtrl->pitchL, Lambda_Q10, LTP_scale_Q14, psEnc->sCmn.arch );
+    }
+}
+
+/***********************************************/
+/* Floating-point Silk LTP quantiation wrapper */
+/***********************************************/
+void silk_quant_LTP_gains_FLP(
+    silk_float                      B[ MAX_NB_SUBFR * LTP_ORDER ],      /* O    Quantized LTP gains                            */
+    opus_int8                       cbk_index[ MAX_NB_SUBFR ],          /* O    Codebook index                              */
+    opus_int8                       *periodicity_index,                 /* O    Periodicity index                           */
+    opus_int32                      *sum_log_gain_Q7,                   /* I/O  Cumulative max prediction gain  */
+    silk_float                      *pred_gain_dB,                        /* O    LTP prediction gain                            */
+    const silk_float                XX[ MAX_NB_SUBFR * LTP_ORDER * LTP_ORDER ], /* I    Correlation matrix                    */
+    const silk_float                xX[ MAX_NB_SUBFR * LTP_ORDER ],        /* I    Correlation vector                            */
+    const opus_int                    subfr_len,                            /* I    Number of samples per subframe                */
+    const opus_int                    nb_subfr,                           /* I    Number of subframes                            */
+    int                             arch                                /* I    Run-time architecture                       */
+)
+{
+    opus_int   i, pred_gain_dB_Q7;
+    opus_int16 B_Q14[ MAX_NB_SUBFR * LTP_ORDER ];
+    opus_int32 XX_Q17[ MAX_NB_SUBFR * LTP_ORDER * LTP_ORDER ];
+    opus_int32 xX_Q17[ MAX_NB_SUBFR * LTP_ORDER ];
+
+    for( i = 0; i < nb_subfr * LTP_ORDER * LTP_ORDER; i++ ) {
+        XX_Q17[ i ] = (opus_int32)silk_float2int( XX[ i ] * 131072.0f );
+    }
+    for( i = 0; i < nb_subfr * LTP_ORDER; i++ ) {
+        xX_Q17[ i ] = (opus_int32)silk_float2int( xX[ i ] * 131072.0f );
+    }
+
+    silk_quant_LTP_gains( B_Q14, cbk_index, periodicity_index, sum_log_gain_Q7, &pred_gain_dB_Q7, XX_Q17, xX_Q17, subfr_len, nb_subfr, arch );
+
+    for( i = 0; i < nb_subfr * LTP_ORDER; i++ ) {
+        B[ i ] = (silk_float)B_Q14[ i ] * ( 1.0f / 16384.0f );
+    }
+
+    *pred_gain_dB = (silk_float)pred_gain_dB_Q7 * ( 1.0f / 128.0f );
+}