103302b375
commit 5b64cf7c4d67af9050bc959996ef976ce6326888
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date: Thu May 19 16:40:35 2011 -0400
Fixes a few bugs introduced in the latest update
commit b91eb86025d2de3c4cf04f4fb1aa48a28ad676a3
Author: Timothy B. Terriberry <tterribe@xiph.org>
Date: Thu May 19 16:12:02 2011 -0400
build_draft.sh fixes
commit 0b10c30db7ad60ff7d4bfc1139bdb86e0543c035
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date: Thu May 19 15:30:21 2011 -0400
Fixes the draft build
commit 164424cded5978e657105104e171ac202dde5e5b
Author: Jean-Marc Valin <jean-marc.valin@octasic.com>
Date: Thu May 19 15:00:23 2011 -0400
Updated build system
commit 188d9fcba8c3a1b1ad67c67c430e1b37e3658a40
Author: Koen Vos <koen.vos@skype.net>
Date: Thu May 19 17:14:57 2011 -0400
SILK/Opus update
64 lines
3 KiB
C
64 lines
3 KiB
C
/***********************************************************************
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Copyright (c) 2006-2011, Skype Limited. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, (subject to the limitations in the disclaimer below)
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are permitted provided that the following conditions are met:
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- Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of Skype Limited, nor the names of specific
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contributors, may be used to endorse or promote products derived from
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this software without specific prior written permission.
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NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
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BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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CONTRIBUTORS ''AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
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BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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***********************************************************************/
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#include "silk_SigProc_FLP.h"
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SKP_float silk_schur_FLP( /* O returns residual energy */
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SKP_float refl_coef[], /* O reflection coefficients (length order) */
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const SKP_float auto_corr[], /* I autotcorrelation sequence (length order+1) */
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SKP_int order /* I order */
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)
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{
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SKP_int k, n;
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SKP_float C[ SILK_MAX_ORDER_LPC + 1 ][ 2 ];
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SKP_float Ctmp1, Ctmp2, rc_tmp;
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/* Copy correlations */
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for( k = 0; k < order+1; k++ ) {
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C[ k ][ 0 ] = C[ k ][ 1 ] = auto_corr[ k ];
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}
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for( k = 0; k < order; k++ ) {
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/* Get reflection coefficient */
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rc_tmp = -C[ k + 1 ][ 0 ] / SKP_max_float( C[ 0 ][ 1 ], 1e-9f );
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/* Save the output */
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refl_coef[ k ] = rc_tmp;
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/* Update correlations */
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for( n = 0; n < order - k; n++ ){
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Ctmp1 = C[ n + k + 1 ][ 0 ];
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Ctmp2 = C[ n ][ 1 ];
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C[ n + k + 1 ][ 0 ] = Ctmp1 + Ctmp2 * rc_tmp;
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C[ n ][ 1 ] = Ctmp2 + Ctmp1 * rc_tmp;
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}
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}
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/* Return residual energy */
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return C[ 0 ][ 1 ];
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}
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