| File: | libs/opus-1.1-p2/silk/float/schur_FLP.c |
| Location: | line 68, column 5 |
| Description: | Undefined or garbage value returned to caller |
| 1 | /*********************************************************************** | |||
| 2 | Copyright (c) 2006-2011, Skype Limited. All rights reserved. | |||
| 3 | Redistribution and use in source and binary forms, with or without | |||
| 4 | modification, are permitted provided that the following conditions | |||
| 5 | are met: | |||
| 6 | - Redistributions of source code must retain the above copyright notice, | |||
| 7 | this list of conditions and the following disclaimer. | |||
| 8 | - Redistributions in binary form must reproduce the above copyright | |||
| 9 | notice, this list of conditions and the following disclaimer in the | |||
| 10 | documentation and/or other materials provided with the distribution. | |||
| 11 | - Neither the name of Internet Society, IETF or IETF Trust, nor the | |||
| 12 | names of specific contributors, may be used to endorse or promote | |||
| 13 | products derived from this software without specific prior written | |||
| 14 | permission. | |||
| 15 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |||
| 16 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |||
| 17 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |||
| 18 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |||
| 19 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |||
| 20 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |||
| 21 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |||
| 22 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |||
| 23 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |||
| 24 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |||
| 25 | POSSIBILITY OF SUCH DAMAGE. | |||
| 26 | ***********************************************************************/ | |||
| 27 | ||||
| 28 | #ifdef HAVE_CONFIG_H1 | |||
| 29 | #include "config.h" | |||
| 30 | #endif | |||
| 31 | ||||
| 32 | #include "SigProc_FLP.h" | |||
| 33 | ||||
| 34 | silk_floatfloat silk_schur_FLP( /* O returns residual energy */ | |||
| 35 | silk_floatfloat refl_coef[], /* O reflection coefficients (length order) */ | |||
| 36 | const silk_floatfloat auto_corr[], /* I autocorrelation sequence (length order+1) */ | |||
| 37 | opus_intint order /* I order */ | |||
| 38 | ) | |||
| 39 | { | |||
| 40 | opus_intint k, n; | |||
| 41 | silk_floatfloat C[ SILK_MAX_ORDER_LPC16 + 1 ][ 2 ]; | |||
| 42 | silk_floatfloat Ctmp1, Ctmp2, rc_tmp; | |||
| 43 | ||||
| 44 | silk_assert( order==6||order==8||order==10||order==12||order==14||order==16 ); | |||
| 45 | ||||
| 46 | /* Copy correlations */ | |||
| 47 | for( k = 0; k < order+1; k++ ) { | |||
| ||||
| 48 | C[ k ][ 0 ] = C[ k ][ 1 ] = auto_corr[ k ]; | |||
| 49 | } | |||
| 50 | ||||
| 51 | for( k = 0; k < order; k++ ) { | |||
| 52 | /* Get reflection coefficient */ | |||
| 53 | rc_tmp = -C[ k + 1 ][ 0 ] / silk_max_float( C[ 0 ][ 1 ], 1e-9f )(((C[ 0 ][ 1 ]) > (1e-9f)) ? (C[ 0 ][ 1 ]) : (1e-9f)); | |||
| 54 | ||||
| 55 | /* Save the output */ | |||
| 56 | refl_coef[ k ] = rc_tmp; | |||
| 57 | ||||
| 58 | /* Update correlations */ | |||
| 59 | for( n = 0; n < order - k; n++ ) { | |||
| 60 | Ctmp1 = C[ n + k + 1 ][ 0 ]; | |||
| 61 | Ctmp2 = C[ n ][ 1 ]; | |||
| 62 | C[ n + k + 1 ][ 0 ] = Ctmp1 + Ctmp2 * rc_tmp; | |||
| 63 | C[ n ][ 1 ] = Ctmp2 + Ctmp1 * rc_tmp; | |||
| 64 | } | |||
| 65 | } | |||
| 66 | ||||
| 67 | /* Return residual energy */ | |||
| 68 | return C[ 0 ][ 1 ]; | |||
| ||||
| 69 | } | |||
| 70 |