[Opus] Update to v1.2.1

third_party/opus/src/silk/float/find_pred_coefs_FLP.c

Index: third_party/opus/src/silk/float/find_pred_coefs_FLP.c
diff --git a/third_party/opus/src/silk/float/find_pred_coefs_FLP.c b/third_party/opus/src/silk/float/find_pred_coefs_FLP.c
index 1af4fe5f1b2d1676ca2682c026d98c2e781ae50c..cb2e763b1db02bb3fd0c166f6a900d57fc23b824 100644
--- a/third_party/opus/src/silk/float/find_pred_coefs_FLP.c
+++ b/third_party/opus/src/silk/float/find_pred_coefs_FLP.c
@@ -41,8 +41,9 @@ void silk_find_pred_coefs_FLP(
 )
 {
     opus_int         i;
-    silk_float       WLTP[ MAX_NB_SUBFR * LTP_ORDER * LTP_ORDER ];
-    silk_float       invGains[ MAX_NB_SUBFR ], Wght[ MAX_NB_SUBFR ];
+    silk_float       XXLTP[ MAX_NB_SUBFR * LTP_ORDER * LTP_ORDER ];
+    silk_float       xXLTP[ MAX_NB_SUBFR * LTP_ORDER ];
+    silk_float       invGains[ MAX_NB_SUBFR ];
     opus_int16       NLSF_Q15[ MAX_LPC_ORDER ];
     const silk_float *x_ptr;
     silk_float       *x_pre_ptr, LPC_in_pre[ MAX_NB_SUBFR * MAX_LPC_ORDER + MAX_FRAME_LENGTH ];
@@ -52,7 +53,6 @@ void silk_find_pred_coefs_FLP(
     for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) {
         silk_assert( psEncCtrl->Gains[ i ] > 0.0f );
         invGains[ i ] = 1.0f / psEncCtrl->Gains[ i ];
-        Wght[ i ]     = invGains[ i ] * invGains[ i ];
     }
 
     if( psEnc->sCmn.indices.signalType == TYPE_VOICED ) {
@@ -62,13 +62,11 @@ void silk_find_pred_coefs_FLP(
         silk_assert( psEnc->sCmn.ltp_mem_length - psEnc->sCmn.predictLPCOrder >= psEncCtrl->pitchL[ 0 ] + LTP_ORDER / 2 );
 
         /* LTP analysis */
-        silk_find_LTP_FLP( psEncCtrl->LTPCoef, WLTP, &psEncCtrl->LTPredCodGain, res_pitch,
-            psEncCtrl->pitchL, Wght, psEnc->sCmn.subfr_length, psEnc->sCmn.nb_subfr, psEnc->sCmn.ltp_mem_length );
+        silk_find_LTP_FLP( XXLTP, xXLTP, res_pitch, psEncCtrl->pitchL, psEnc->sCmn.subfr_length, psEnc->sCmn.nb_subfr );
 
         /* Quantize LTP gain parameters */
         silk_quant_LTP_gains_FLP( psEncCtrl->LTPCoef, psEnc->sCmn.indices.LTPIndex, &psEnc->sCmn.indices.PERIndex,
-            &psEnc->sCmn.sum_log_gain_Q7, WLTP, psEnc->sCmn.mu_LTP_Q9, psEnc->sCmn.LTPQuantLowComplexity, psEnc->sCmn.nb_subfr,
-            psEnc->sCmn.arch );
+            &psEnc->sCmn.sum_log_gain_Q7, &psEncCtrl->LTPredCodGain, XXLTP, xXLTP, psEnc->sCmn.subfr_length, psEnc->sCmn.nb_subfr, psEnc->sCmn.arch );
 
         /* Control LTP scaling */
         silk_LTP_scale_ctrl_FLP( psEnc, psEncCtrl, condCoding );