diff options
Diffstat (limited to 'src/opus-1.0.2/silk/decode_parameters.c')
| -rw-r--r-- | src/opus-1.0.2/silk/decode_parameters.c | 115 |
1 files changed, 0 insertions, 115 deletions
diff --git a/src/opus-1.0.2/silk/decode_parameters.c b/src/opus-1.0.2/silk/decode_parameters.c deleted file mode 100644 index e4c7e7a4..00000000 --- a/src/opus-1.0.2/silk/decode_parameters.c +++ /dev/null @@ -1,115 +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 "main.h" - -/* Decode parameters from payload */ -void silk_decode_parameters( - silk_decoder_state *psDec, /* I/O State */ - silk_decoder_control *psDecCtrl, /* I/O Decoder control */ - opus_int condCoding /* I The type of conditional coding to use */ -) -{ - opus_int i, k, Ix; - opus_int16 pNLSF_Q15[ MAX_LPC_ORDER ], pNLSF0_Q15[ MAX_LPC_ORDER ]; - const opus_int8 *cbk_ptr_Q7; - - /* Dequant Gains */ - silk_gains_dequant( psDecCtrl->Gains_Q16, psDec->indices.GainsIndices, - &psDec->LastGainIndex, condCoding == CODE_CONDITIONALLY, psDec->nb_subfr ); - - /****************/ - /* Decode NLSFs */ - /****************/ - silk_NLSF_decode( pNLSF_Q15, psDec->indices.NLSFIndices, psDec->psNLSF_CB ); - - /* Convert NLSF parameters to AR prediction filter coefficients */ - silk_NLSF2A( psDecCtrl->PredCoef_Q12[ 1 ], pNLSF_Q15, psDec->LPC_order ); - - /* If just reset, e.g., because internal Fs changed, do not allow interpolation */ - /* improves the case of packet loss in the first frame after a switch */ - if( psDec->first_frame_after_reset == 1 ) { - psDec->indices.NLSFInterpCoef_Q2 = 4; - } - - if( psDec->indices.NLSFInterpCoef_Q2 < 4 ) { - /* Calculation of the interpolated NLSF0 vector from the interpolation factor, */ - /* the previous NLSF1, and the current NLSF1 */ - for( i = 0; i < psDec->LPC_order; i++ ) { - pNLSF0_Q15[ i ] = psDec->prevNLSF_Q15[ i ] + silk_RSHIFT( silk_MUL( psDec->indices.NLSFInterpCoef_Q2, - pNLSF_Q15[ i ] - psDec->prevNLSF_Q15[ i ] ), 2 ); - } - - /* Convert NLSF parameters to AR prediction filter coefficients */ - silk_NLSF2A( psDecCtrl->PredCoef_Q12[ 0 ], pNLSF0_Q15, psDec->LPC_order ); - } else { - /* Copy LPC coefficients for first half from second half */ - silk_memcpy( psDecCtrl->PredCoef_Q12[ 0 ], psDecCtrl->PredCoef_Q12[ 1 ], psDec->LPC_order * sizeof( opus_int16 ) ); - } - - silk_memcpy( psDec->prevNLSF_Q15, pNLSF_Q15, psDec->LPC_order * sizeof( opus_int16 ) ); - - /* After a packet loss do BWE of LPC coefs */ - if( psDec->lossCnt ) { - silk_bwexpander( psDecCtrl->PredCoef_Q12[ 0 ], psDec->LPC_order, BWE_AFTER_LOSS_Q16 ); - silk_bwexpander( psDecCtrl->PredCoef_Q12[ 1 ], psDec->LPC_order, BWE_AFTER_LOSS_Q16 ); - } - - if( psDec->indices.signalType == TYPE_VOICED ) { - /*********************/ - /* Decode pitch lags */ - /*********************/ - - /* Decode pitch values */ - silk_decode_pitch( psDec->indices.lagIndex, psDec->indices.contourIndex, psDecCtrl->pitchL, psDec->fs_kHz, psDec->nb_subfr ); - - /* Decode Codebook Index */ - cbk_ptr_Q7 = silk_LTP_vq_ptrs_Q7[ psDec->indices.PERIndex ]; /* set pointer to start of codebook */ - - for( k = 0; k < psDec->nb_subfr; k++ ) { - Ix = psDec->indices.LTPIndex[ k ]; - for( i = 0; i < LTP_ORDER; i++ ) { - psDecCtrl->LTPCoef_Q14[ k * LTP_ORDER + i ] = silk_LSHIFT( cbk_ptr_Q7[ Ix * LTP_ORDER + i ], 7 ); - } - } - - /**********************/ - /* Decode LTP scaling */ - /**********************/ - Ix = psDec->indices.LTP_scaleIndex; - psDecCtrl->LTP_scale_Q14 = silk_LTPScales_table_Q14[ Ix ]; - } else { - silk_memset( psDecCtrl->pitchL, 0, psDec->nb_subfr * sizeof( opus_int ) ); - silk_memset( psDecCtrl->LTPCoef_Q14, 0, LTP_ORDER * psDec->nb_subfr * sizeof( opus_int16 ) ); - psDec->indices.PERIndex = 0; - psDecCtrl->LTP_scale_Q14 = 0; - } -} |