diff options
Diffstat (limited to 'drivers/opus/silk/process_NLSFs.c')
| -rw-r--r-- | drivers/opus/silk/process_NLSFs.c | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/drivers/opus/silk/process_NLSFs.c b/drivers/opus/silk/process_NLSFs.c deleted file mode 100644 index 9d8f96d7b7..0000000000 --- a/drivers/opus/silk/process_NLSFs.c +++ /dev/null @@ -1,102 +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. -***********************************************************************/ -#include "opus/opus_config.h" - -#include "opus/silk/main.h" - -/* Limit, stabilize, convert and quantize NLSFs */ -void silk_process_NLSFs( - silk_encoder_state *psEncC, /* I/O Encoder state */ - opus_int16 PredCoef_Q12[ 2 ][ MAX_LPC_ORDER ], /* O Prediction coefficients */ - opus_int16 pNLSF_Q15[ MAX_LPC_ORDER ], /* I/O Normalized LSFs (quant out) (0 - (2^15-1)) */ - const opus_int16 prev_NLSFq_Q15[ MAX_LPC_ORDER ] /* I Previous Normalized LSFs (0 - (2^15-1)) */ -) -{ - opus_int i, doInterpolate; - opus_int NLSF_mu_Q20; - opus_int32 i_sqr_Q15; - opus_int16 pNLSF0_temp_Q15[ MAX_LPC_ORDER ]; - opus_int16 pNLSFW_QW[ MAX_LPC_ORDER ]; - opus_int16 pNLSFW0_temp_QW[ MAX_LPC_ORDER ]; - - silk_assert( psEncC->speech_activity_Q8 >= 0 ); - silk_assert( psEncC->speech_activity_Q8 <= SILK_FIX_CONST( 1.0, 8 ) ); - silk_assert( psEncC->useInterpolatedNLSFs == 1 || psEncC->indices.NLSFInterpCoef_Q2 == ( 1 << 2 ) ); - - /***********************/ - /* Calculate mu values */ - /***********************/ - /* NLSF_mu = 0.003 - 0.0015 * psEnc->speech_activity; */ - NLSF_mu_Q20 = silk_SMLAWB( SILK_FIX_CONST( 0.003, 20 ), SILK_FIX_CONST( -0.001, 28 ), psEncC->speech_activity_Q8 ); - if( psEncC->nb_subfr == 2 ) { - /* Multiply by 1.5 for 10 ms packets */ - NLSF_mu_Q20 = silk_ADD_RSHIFT( NLSF_mu_Q20, NLSF_mu_Q20, 1 ); - } - - silk_assert( NLSF_mu_Q20 > 0 ); - silk_assert( NLSF_mu_Q20 <= SILK_FIX_CONST( 0.005, 20 ) ); - - /* Calculate NLSF weights */ - silk_NLSF_VQ_weights_laroia( pNLSFW_QW, pNLSF_Q15, psEncC->predictLPCOrder ); - - /* Update NLSF weights for interpolated NLSFs */ - doInterpolate = ( psEncC->useInterpolatedNLSFs == 1 ) && ( psEncC->indices.NLSFInterpCoef_Q2 < 4 ); - if( doInterpolate ) { - /* Calculate the interpolated NLSF vector for the first half */ - silk_interpolate( pNLSF0_temp_Q15, prev_NLSFq_Q15, pNLSF_Q15, - psEncC->indices.NLSFInterpCoef_Q2, psEncC->predictLPCOrder ); - - /* Calculate first half NLSF weights for the interpolated NLSFs */ - silk_NLSF_VQ_weights_laroia( pNLSFW0_temp_QW, pNLSF0_temp_Q15, psEncC->predictLPCOrder ); - - /* Update NLSF weights with contribution from first half */ - i_sqr_Q15 = silk_LSHIFT( silk_SMULBB( psEncC->indices.NLSFInterpCoef_Q2, psEncC->indices.NLSFInterpCoef_Q2 ), 11 ); - for( i = 0; i < psEncC->predictLPCOrder; i++ ) { - pNLSFW_QW[ i ] = silk_SMLAWB( silk_RSHIFT( pNLSFW_QW[ i ], 1 ), (opus_int32)pNLSFW0_temp_QW[ i ], i_sqr_Q15 ); - silk_assert( pNLSFW_QW[ i ] >= 1 ); - } - } - - silk_NLSF_encode( psEncC->indices.NLSFIndices, pNLSF_Q15, psEncC->psNLSF_CB, pNLSFW_QW, - NLSF_mu_Q20, psEncC->NLSF_MSVQ_Survivors, psEncC->indices.signalType ); - - /* Convert quantized NLSFs back to LPC coefficients */ - silk_NLSF2A( PredCoef_Q12[ 1 ], pNLSF_Q15, psEncC->predictLPCOrder ); - - if( doInterpolate ) { - /* Calculate the interpolated, quantized LSF vector for the first half */ - silk_interpolate( pNLSF0_temp_Q15, prev_NLSFq_Q15, pNLSF_Q15, - psEncC->indices.NLSFInterpCoef_Q2, psEncC->predictLPCOrder ); - - /* Convert back to LPC coefficients */ - silk_NLSF2A( PredCoef_Q12[ 0 ], pNLSF0_temp_Q15, psEncC->predictLPCOrder ); - - } else { - /* Copy LPC coefficients for first half from second half */ - silk_memcpy( PredCoef_Q12[ 0 ], PredCoef_Q12[ 1 ], psEncC->predictLPCOrder * sizeof( opus_int16 ) ); - } -} |