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diff --git a/media/libopus/silk/float/find_LTP_FLP.c b/media/libopus/silk/float/find_LTP_FLP.c
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+/***********************************************************************
+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"
+#include "tuning_parameters.h"
+
+void silk_find_LTP_FLP(
+ silk_float XX[ MAX_NB_SUBFR * LTP_ORDER * LTP_ORDER ], /* O Weight for LTP quantization */
+ silk_float xX[ MAX_NB_SUBFR * LTP_ORDER ], /* O Weight for LTP quantization */
+ const silk_float r_ptr[], /* I LPC residual */
+ const opus_int lag[ MAX_NB_SUBFR ], /* I LTP lags */
+ const opus_int subfr_length, /* I Subframe length */
+ const opus_int nb_subfr /* I number of subframes */
+)
+{
+ opus_int k;
+ silk_float *xX_ptr, *XX_ptr;
+ const silk_float *lag_ptr;
+ silk_float xx, temp;
+
+ xX_ptr = xX;
+ XX_ptr = XX;
+ for( k = 0; k < nb_subfr; k++ ) {
+ lag_ptr = r_ptr - ( lag[ k ] + LTP_ORDER / 2 );
+ silk_corrMatrix_FLP( lag_ptr, subfr_length, LTP_ORDER, XX_ptr );
+ silk_corrVector_FLP( lag_ptr, r_ptr, subfr_length, LTP_ORDER, xX_ptr );
+ xx = ( silk_float )silk_energy_FLP( r_ptr, subfr_length + LTP_ORDER );
+ temp = 1.0f / silk_max( xx, LTP_CORR_INV_MAX * 0.5f * ( XX_ptr[ 0 ] + XX_ptr[ 24 ] ) + 1.0f );
+ silk_scale_vector_FLP( XX_ptr, temp, LTP_ORDER * LTP_ORDER );
+ silk_scale_vector_FLP( xX_ptr, temp, LTP_ORDER );
+
+ r_ptr += subfr_length;
+ XX_ptr += LTP_ORDER * LTP_ORDER;
+ xX_ptr += LTP_ORDER;
+ }
+}