diff options
Diffstat (limited to 'src/opus-1.0.2/silk/float/schur_FLP.c')
| -rw-r--r-- | src/opus-1.0.2/silk/float/schur_FLP.c | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/src/opus-1.0.2/silk/float/schur_FLP.c b/src/opus-1.0.2/silk/float/schur_FLP.c deleted file mode 100644 index 90c3a18b..00000000 --- a/src/opus-1.0.2/silk/float/schur_FLP.c +++ /dev/null @@ -1,70 +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" - -silk_float silk_schur_FLP( /* O returns residual energy */ - silk_float refl_coef[], /* O reflection coefficients (length order) */ - const silk_float auto_corr[], /* I autocorrelation sequence (length order+1) */ - opus_int order /* I order */ -) -{ - opus_int k, n; - silk_float C[ SILK_MAX_ORDER_LPC + 1 ][ 2 ]; - silk_float Ctmp1, Ctmp2, rc_tmp; - - silk_assert( order==6||order==8||order==10||order==12||order==14||order==16 ); - - /* Copy correlations */ - for( k = 0; k < order+1; k++ ) { - C[ k ][ 0 ] = C[ k ][ 1 ] = auto_corr[ k ]; - } - - for( k = 0; k < order; k++ ) { - /* Get reflection coefficient */ - rc_tmp = -C[ k + 1 ][ 0 ] / silk_max_float( C[ 0 ][ 1 ], 1e-9f ); - - /* Save the output */ - refl_coef[ k ] = rc_tmp; - - /* Update correlations */ - for( n = 0; n < order - k; n++ ) { - Ctmp1 = C[ n + k + 1 ][ 0 ]; - Ctmp2 = C[ n ][ 1 ]; - C[ n + k + 1 ][ 0 ] = Ctmp1 + Ctmp2 * rc_tmp; - C[ n ][ 1 ] = Ctmp2 + Ctmp1 * rc_tmp; - } - } - - /* Return residual energy */ - return C[ 0 ][ 1 ]; -} - |