From 29d1369a796580c952e7512ca24541966e0498c4 Mon Sep 17 00:00:00 2001
From: Jean-Marc Valin <jmvalin@jmvalin.ca>
Date: Tue, 5 Jul 2016 12:07:02 -0400
Subject: [PATCH] Replace another useless 32x16 multiply with 16x16
---
silk/process_NLSFs.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/silk/process_NLSFs.c b/silk/process_NLSFs.c
index 248000bc0..0ab71f016 100644
--- a/silk/process_NLSFs.c
+++ b/silk/process_NLSFs.c
@@ -41,7 +41,7 @@ void silk_process_NLSFs(
{
opus_int i, doInterpolate;
opus_int NLSF_mu_Q20;
- opus_int32 i_sqr_Q15;
+ opus_int16 i_sqr_Q15;
opus_int16 pNLSF0_temp_Q15[ MAX_LPC_ORDER ];
opus_int16 pNLSFW_QW[ MAX_LPC_ORDER ];
opus_int16 pNLSFW0_temp_QW[ MAX_LPC_ORDER ];
@@ -79,7 +79,8 @@ void silk_process_NLSFs(
/* Update NLSF weights with contribution from first half */
i_sqr_Q15 = silk_LSHIFT( silk_SMULBB( psEncC->indices.NLSFInterpCoef_Q2, psEncC->indices.NLSFInterpCoef_Q2 ), 11 );
for( i = 0; i < psEncC->predictLPCOrder; i++ ) {
- pNLSFW_QW[ i ] = silk_SMLAWB( silk_RSHIFT( pNLSFW_QW[ i ], 1 ), (opus_int32)pNLSFW0_temp_QW[ i ], i_sqr_Q15 );
+ pNLSFW_QW[ i ] = silk_ADD16( silk_RSHIFT( pNLSFW_QW[ i ], 1 ), silk_RSHIFT(
+ silk_SMULBB( pNLSFW0_temp_QW[ i ], i_sqr_Q15 ), 16) );
silk_assert( pNLSFW_QW[ i ] >= 1 );
}
}
--
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