[Opus] Update to v1.2.1

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

Index: third_party/opus/src/silk/float/levinsondurbin_FLP.c
diff --git a/third_party/opus/src/silk/float/levinsondurbin_FLP.c b/third_party/opus/src/silk/float/levinsondurbin_FLP.c
deleted file mode 100644
index f0ba6069812fd32b92cbea649d9bb7e0b55a4f02..0000000000000000000000000000000000000000
--- a/third_party/opus/src/silk/float/levinsondurbin_FLP.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/***********************************************************************
-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 "SigProc_FLP.h"
-
-/* Solve the normal equations using the Levinson-Durbin recursion */
-silk_float silk_levinsondurbin_FLP(         /* O    prediction error energy                                     */
-    silk_float          A[],                /* O    prediction coefficients    [order]                          */
-    const silk_float    corr[],             /* I    input auto-correlations [order + 1]                         */
-    const opus_int      order               /* I    prediction order                                            */
-)
-{
-    opus_int   i, mHalf, m;
-    silk_float min_nrg, nrg, t, km, Atmp1, Atmp2;
-
-    min_nrg = 1e-12f * corr[ 0 ] + 1e-9f;
-    nrg = corr[ 0 ];
-    nrg = silk_max_float(min_nrg, nrg);
-    A[ 0 ] = corr[ 1 ] / nrg;
-    nrg -= A[ 0 ] * corr[ 1 ];
-    nrg = silk_max_float(min_nrg, nrg);
-
-    for( m = 1; m < order; m++ )
-    {
-        t = corr[ m + 1 ];
-        for( i = 0; i < m; i++ ) {
-            t -= A[ i ] * corr[ m - i ];
-        }
-
-        /* reflection coefficient */
-        km = t / nrg;
-
-        /* residual energy */
-        nrg -= km * t;
-        nrg = silk_max_float(min_nrg, nrg);
-
-        mHalf = m >> 1;
-        for( i = 0; i < mHalf; i++ ) {
-            Atmp1 = A[ i ];
-            Atmp2 = A[ m - i - 1 ];
-            A[ m - i - 1 ] -= km * Atmp1;
-            A[ i ]         -= km * Atmp2;
-        }
-        if( m & 1 ) {
-            A[ mHalf ]     -= km * A[ mHalf ];
-        }
-        A[ m ] = km;
-    }
-
-    /* return the residual energy */
-    return nrg;
-}
-