diff options
Diffstat (limited to 'src/opus-1.0.2/silk/NSQ_del_dec.c')
| -rw-r--r-- | src/opus-1.0.2/silk/NSQ_del_dec.c | 705 |
1 files changed, 0 insertions, 705 deletions
diff --git a/src/opus-1.0.2/silk/NSQ_del_dec.c b/src/opus-1.0.2/silk/NSQ_del_dec.c deleted file mode 100644 index b877fa96..00000000 --- a/src/opus-1.0.2/silk/NSQ_del_dec.c +++ /dev/null @@ -1,705 +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" - -typedef struct { - opus_int32 sLPC_Q14[ MAX_SUB_FRAME_LENGTH + NSQ_LPC_BUF_LENGTH ]; - opus_int32 RandState[ DECISION_DELAY ]; - opus_int32 Q_Q10[ DECISION_DELAY ]; - opus_int32 Xq_Q14[ DECISION_DELAY ]; - opus_int32 Pred_Q15[ DECISION_DELAY ]; - opus_int32 Shape_Q14[ DECISION_DELAY ]; - opus_int32 sAR2_Q14[ MAX_SHAPE_LPC_ORDER ]; - opus_int32 LF_AR_Q14; - opus_int32 Seed; - opus_int32 SeedInit; - opus_int32 RD_Q10; -} NSQ_del_dec_struct; - -typedef struct { - opus_int32 Q_Q10; - opus_int32 RD_Q10; - opus_int32 xq_Q14; - opus_int32 LF_AR_Q14; - opus_int32 sLTP_shp_Q14; - opus_int32 LPC_exc_Q14; -} NSQ_sample_struct; - -static inline void silk_nsq_del_dec_scale_states( - const silk_encoder_state *psEncC, /* I Encoder State */ - silk_nsq_state *NSQ, /* I/O NSQ state */ - NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */ - const opus_int32 x_Q3[], /* I Input in Q3 */ - opus_int32 x_sc_Q10[], /* O Input scaled with 1/Gain in Q10 */ - const opus_int16 sLTP[], /* I Re-whitened LTP state in Q0 */ - opus_int32 sLTP_Q15[], /* O LTP state matching scaled input */ - opus_int subfr, /* I Subframe number */ - opus_int nStatesDelayedDecision, /* I Number of del dec states */ - const opus_int LTP_scale_Q14, /* I LTP state scaling */ - const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I */ - const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag */ - const opus_int signal_type, /* I Signal type */ - const opus_int decisionDelay /* I Decision delay */ -); - -/******************************************/ -/* Noise shape quantizer for one subframe */ -/******************************************/ -static inline void silk_noise_shape_quantizer_del_dec( - silk_nsq_state *NSQ, /* I/O NSQ state */ - NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */ - opus_int signalType, /* I Signal type */ - const opus_int32 x_Q10[], /* I */ - opus_int8 pulses[], /* O */ - opus_int16 xq[], /* O */ - opus_int32 sLTP_Q15[], /* I/O LTP filter state */ - opus_int32 delayedGain_Q10[], /* I/O Gain delay buffer */ - const opus_int16 a_Q12[], /* I Short term prediction coefs */ - const opus_int16 b_Q14[], /* I Long term prediction coefs */ - const opus_int16 AR_shp_Q13[], /* I Noise shaping coefs */ - opus_int lag, /* I Pitch lag */ - opus_int32 HarmShapeFIRPacked_Q14, /* I */ - opus_int Tilt_Q14, /* I Spectral tilt */ - opus_int32 LF_shp_Q14, /* I */ - opus_int32 Gain_Q16, /* I */ - opus_int Lambda_Q10, /* I */ - opus_int offset_Q10, /* I */ - opus_int length, /* I Input length */ - opus_int subfr, /* I Subframe number */ - opus_int shapingLPCOrder, /* I Shaping LPC filter order */ - opus_int predictLPCOrder, /* I Prediction filter order */ - opus_int warping_Q16, /* I */ - opus_int nStatesDelayedDecision, /* I Number of states in decision tree */ - opus_int *smpl_buf_idx, /* I Index to newest samples in buffers */ - opus_int decisionDelay /* I */ -); - -void silk_NSQ_del_dec( - const silk_encoder_state *psEncC, /* I/O Encoder State */ - silk_nsq_state *NSQ, /* I/O NSQ state */ - SideInfoIndices *psIndices, /* I/O Quantization Indices */ - const opus_int32 x_Q3[], /* I Prefiltered input signal */ - opus_int8 pulses[], /* O Quantized pulse signal */ - const opus_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefs */ - const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ], /* I Long term prediction coefs */ - const opus_int16 AR2_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ], /* I Noise shaping coefs */ - const opus_int HarmShapeGain_Q14[ MAX_NB_SUBFR ], /* I Long term shaping coefs */ - const opus_int Tilt_Q14[ MAX_NB_SUBFR ], /* I Spectral tilt */ - const opus_int32 LF_shp_Q14[ MAX_NB_SUBFR ], /* I Low frequency shaping coefs */ - const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I Quantization step sizes */ - const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lags */ - const opus_int Lambda_Q10, /* I Rate/distortion tradeoff */ - const opus_int LTP_scale_Q14 /* I LTP state scaling */ -) -{ - opus_int i, k, lag, start_idx, LSF_interpolation_flag, Winner_ind, subfr; - opus_int last_smple_idx, smpl_buf_idx, decisionDelay; - const opus_int16 *A_Q12, *B_Q14, *AR_shp_Q13; - opus_int16 *pxq; - opus_int32 sLTP_Q15[ 2 * MAX_FRAME_LENGTH ]; - opus_int16 sLTP[ 2 * MAX_FRAME_LENGTH ]; - opus_int32 HarmShapeFIRPacked_Q14; - opus_int offset_Q10; - opus_int32 RDmin_Q10, Gain_Q10; - opus_int32 x_sc_Q10[ MAX_SUB_FRAME_LENGTH ]; - opus_int32 delayedGain_Q10[ DECISION_DELAY ]; - NSQ_del_dec_struct psDelDec[ MAX_DEL_DEC_STATES ]; - NSQ_del_dec_struct *psDD; - - /* Set unvoiced lag to the previous one, overwrite later for voiced */ - lag = NSQ->lagPrev; - - silk_assert( NSQ->prev_gain_Q16 != 0 ); - - /* Initialize delayed decision states */ - silk_memset( psDelDec, 0, psEncC->nStatesDelayedDecision * sizeof( NSQ_del_dec_struct ) ); - for( k = 0; k < psEncC->nStatesDelayedDecision; k++ ) { - psDD = &psDelDec[ k ]; - psDD->Seed = ( k + psIndices->Seed ) & 3; - psDD->SeedInit = psDD->Seed; - psDD->RD_Q10 = 0; - psDD->LF_AR_Q14 = NSQ->sLF_AR_shp_Q14; - psDD->Shape_Q14[ 0 ] = NSQ->sLTP_shp_Q14[ psEncC->ltp_mem_length - 1 ]; - silk_memcpy( psDD->sLPC_Q14, NSQ->sLPC_Q14, NSQ_LPC_BUF_LENGTH * sizeof( opus_int32 ) ); - silk_memcpy( psDD->sAR2_Q14, NSQ->sAR2_Q14, sizeof( NSQ->sAR2_Q14 ) ); - } - - offset_Q10 = silk_Quantization_Offsets_Q10[ psIndices->signalType >> 1 ][ psIndices->quantOffsetType ]; - smpl_buf_idx = 0; /* index of oldest samples */ - - decisionDelay = silk_min_int( DECISION_DELAY, psEncC->subfr_length ); - - /* For voiced frames limit the decision delay to lower than the pitch lag */ - if( psIndices->signalType == TYPE_VOICED ) { - for( k = 0; k < psEncC->nb_subfr; k++ ) { - decisionDelay = silk_min_int( decisionDelay, pitchL[ k ] - LTP_ORDER / 2 - 1 ); - } - } else { - if( lag > 0 ) { - decisionDelay = silk_min_int( decisionDelay, lag - LTP_ORDER / 2 - 1 ); - } - } - - if( psIndices->NLSFInterpCoef_Q2 == 4 ) { - LSF_interpolation_flag = 0; - } else { - LSF_interpolation_flag = 1; - } - - /* Set up pointers to start of sub frame */ - pxq = &NSQ->xq[ psEncC->ltp_mem_length ]; - NSQ->sLTP_shp_buf_idx = psEncC->ltp_mem_length; - NSQ->sLTP_buf_idx = psEncC->ltp_mem_length; - subfr = 0; - for( k = 0; k < psEncC->nb_subfr; k++ ) { - A_Q12 = &PredCoef_Q12[ ( ( k >> 1 ) | ( 1 - LSF_interpolation_flag ) ) * MAX_LPC_ORDER ]; - B_Q14 = <PCoef_Q14[ k * LTP_ORDER ]; - AR_shp_Q13 = &AR2_Q13[ k * MAX_SHAPE_LPC_ORDER ]; - - /* Noise shape parameters */ - silk_assert( HarmShapeGain_Q14[ k ] >= 0 ); - HarmShapeFIRPacked_Q14 = silk_RSHIFT( HarmShapeGain_Q14[ k ], 2 ); - HarmShapeFIRPacked_Q14 |= silk_LSHIFT( (opus_int32)silk_RSHIFT( HarmShapeGain_Q14[ k ], 1 ), 16 ); - - NSQ->rewhite_flag = 0; - if( psIndices->signalType == TYPE_VOICED ) { - /* Voiced */ - lag = pitchL[ k ]; - - /* Re-whitening */ - if( ( k & ( 3 - silk_LSHIFT( LSF_interpolation_flag, 1 ) ) ) == 0 ) { - if( k == 2 ) { - /* RESET DELAYED DECISIONS */ - /* Find winner */ - RDmin_Q10 = psDelDec[ 0 ].RD_Q10; - Winner_ind = 0; - for( i = 1; i < psEncC->nStatesDelayedDecision; i++ ) { - if( psDelDec[ i ].RD_Q10 < RDmin_Q10 ) { - RDmin_Q10 = psDelDec[ i ].RD_Q10; - Winner_ind = i; - } - } - for( i = 0; i < psEncC->nStatesDelayedDecision; i++ ) { - if( i != Winner_ind ) { - psDelDec[ i ].RD_Q10 += ( silk_int32_MAX >> 4 ); - silk_assert( psDelDec[ i ].RD_Q10 >= 0 ); - } - } - - /* Copy final part of signals from winner state to output and long-term filter states */ - psDD = &psDelDec[ Winner_ind ]; - last_smple_idx = smpl_buf_idx + decisionDelay; - for( i = 0; i < decisionDelay; i++ ) { - last_smple_idx = ( last_smple_idx - 1 ) & DECISION_DELAY_MASK; - pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDD->Q_Q10[ last_smple_idx ], 10 ); - pxq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( - silk_SMULWW( psDD->Xq_Q14[ last_smple_idx ], Gains_Q16[ 1 ] ), 14 ) ); - NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - decisionDelay + i ] = psDD->Shape_Q14[ last_smple_idx ]; - } - - subfr = 0; - } - - /* Rewhiten with new A coefs */ - start_idx = psEncC->ltp_mem_length - lag - psEncC->predictLPCOrder - LTP_ORDER / 2; - silk_assert( start_idx > 0 ); - - silk_LPC_analysis_filter( &sLTP[ start_idx ], &NSQ->xq[ start_idx + k * psEncC->subfr_length ], - A_Q12, psEncC->ltp_mem_length - start_idx, psEncC->predictLPCOrder ); - - NSQ->sLTP_buf_idx = psEncC->ltp_mem_length; - NSQ->rewhite_flag = 1; - } - } - - silk_nsq_del_dec_scale_states( psEncC, NSQ, psDelDec, x_Q3, x_sc_Q10, sLTP, sLTP_Q15, k, - psEncC->nStatesDelayedDecision, LTP_scale_Q14, Gains_Q16, pitchL, psIndices->signalType, decisionDelay ); - - silk_noise_shape_quantizer_del_dec( NSQ, psDelDec, psIndices->signalType, x_sc_Q10, pulses, pxq, sLTP_Q15, - delayedGain_Q10, A_Q12, B_Q14, AR_shp_Q13, lag, HarmShapeFIRPacked_Q14, Tilt_Q14[ k ], LF_shp_Q14[ k ], - Gains_Q16[ k ], Lambda_Q10, offset_Q10, psEncC->subfr_length, subfr++, psEncC->shapingLPCOrder, - psEncC->predictLPCOrder, psEncC->warping_Q16, psEncC->nStatesDelayedDecision, &smpl_buf_idx, decisionDelay ); - - x_Q3 += psEncC->subfr_length; - pulses += psEncC->subfr_length; - pxq += psEncC->subfr_length; - } - - /* Find winner */ - RDmin_Q10 = psDelDec[ 0 ].RD_Q10; - Winner_ind = 0; - for( k = 1; k < psEncC->nStatesDelayedDecision; k++ ) { - if( psDelDec[ k ].RD_Q10 < RDmin_Q10 ) { - RDmin_Q10 = psDelDec[ k ].RD_Q10; - Winner_ind = k; - } - } - - /* Copy final part of signals from winner state to output and long-term filter states */ - psDD = &psDelDec[ Winner_ind ]; - psIndices->Seed = psDD->SeedInit; - last_smple_idx = smpl_buf_idx + decisionDelay; - Gain_Q10 = silk_RSHIFT32( Gains_Q16[ psEncC->nb_subfr - 1 ], 6 ); - for( i = 0; i < decisionDelay; i++ ) { - last_smple_idx = ( last_smple_idx - 1 ) & DECISION_DELAY_MASK; - pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDD->Q_Q10[ last_smple_idx ], 10 ); - pxq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( - silk_SMULWW( psDD->Xq_Q14[ last_smple_idx ], Gain_Q10 ), 8 ) ); - NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - decisionDelay + i ] = psDD->Shape_Q14[ last_smple_idx ]; - } - silk_memcpy( NSQ->sLPC_Q14, &psDD->sLPC_Q14[ psEncC->subfr_length ], NSQ_LPC_BUF_LENGTH * sizeof( opus_int32 ) ); - silk_memcpy( NSQ->sAR2_Q14, psDD->sAR2_Q14, sizeof( psDD->sAR2_Q14 ) ); - - /* Update states */ - NSQ->sLF_AR_shp_Q14 = psDD->LF_AR_Q14; - NSQ->lagPrev = pitchL[ psEncC->nb_subfr - 1 ]; - - /* Save quantized speech signal */ - /* DEBUG_STORE_DATA( enc.pcm, &NSQ->xq[psEncC->ltp_mem_length], psEncC->frame_length * sizeof( opus_int16 ) ) */ - silk_memmove( NSQ->xq, &NSQ->xq[ psEncC->frame_length ], psEncC->ltp_mem_length * sizeof( opus_int16 ) ); - silk_memmove( NSQ->sLTP_shp_Q14, &NSQ->sLTP_shp_Q14[ psEncC->frame_length ], psEncC->ltp_mem_length * sizeof( opus_int32 ) ); -} - -/******************************************/ -/* Noise shape quantizer for one subframe */ -/******************************************/ -static inline void silk_noise_shape_quantizer_del_dec( - silk_nsq_state *NSQ, /* I/O NSQ state */ - NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */ - opus_int signalType, /* I Signal type */ - const opus_int32 x_Q10[], /* I */ - opus_int8 pulses[], /* O */ - opus_int16 xq[], /* O */ - opus_int32 sLTP_Q15[], /* I/O LTP filter state */ - opus_int32 delayedGain_Q10[], /* I/O Gain delay buffer */ - const opus_int16 a_Q12[], /* I Short term prediction coefs */ - const opus_int16 b_Q14[], /* I Long term prediction coefs */ - const opus_int16 AR_shp_Q13[], /* I Noise shaping coefs */ - opus_int lag, /* I Pitch lag */ - opus_int32 HarmShapeFIRPacked_Q14, /* I */ - opus_int Tilt_Q14, /* I Spectral tilt */ - opus_int32 LF_shp_Q14, /* I */ - opus_int32 Gain_Q16, /* I */ - opus_int Lambda_Q10, /* I */ - opus_int offset_Q10, /* I */ - opus_int length, /* I Input length */ - opus_int subfr, /* I Subframe number */ - opus_int shapingLPCOrder, /* I Shaping LPC filter order */ - opus_int predictLPCOrder, /* I Prediction filter order */ - opus_int warping_Q16, /* I */ - opus_int nStatesDelayedDecision, /* I Number of states in decision tree */ - opus_int *smpl_buf_idx, /* I Index to newest samples in buffers */ - opus_int decisionDelay /* I */ -) -{ - opus_int i, j, k, Winner_ind, RDmin_ind, RDmax_ind, last_smple_idx; - opus_int32 Winner_rand_state; - opus_int32 LTP_pred_Q14, LPC_pred_Q14, n_AR_Q14, n_LTP_Q14; - opus_int32 n_LF_Q14, r_Q10, rr_Q10, rd1_Q10, rd2_Q10, RDmin_Q10, RDmax_Q10; - opus_int32 q1_Q0, q1_Q10, q2_Q10, exc_Q14, LPC_exc_Q14, xq_Q14, Gain_Q10; - opus_int32 tmp1, tmp2, sLF_AR_shp_Q14; - opus_int32 *pred_lag_ptr, *shp_lag_ptr, *psLPC_Q14; - NSQ_sample_struct psSampleState[ MAX_DEL_DEC_STATES ][ 2 ]; - NSQ_del_dec_struct *psDD; - NSQ_sample_struct *psSS; - - silk_assert( nStatesDelayedDecision > 0 ); - - shp_lag_ptr = &NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - lag + HARM_SHAPE_FIR_TAPS / 2 ]; - pred_lag_ptr = &sLTP_Q15[ NSQ->sLTP_buf_idx - lag + LTP_ORDER / 2 ]; - Gain_Q10 = silk_RSHIFT( Gain_Q16, 6 ); - - for( i = 0; i < length; i++ ) { - /* Perform common calculations used in all states */ - - /* Long-term prediction */ - if( signalType == TYPE_VOICED ) { - /* Unrolled loop */ - /* Avoids introducing a bias because silk_SMLAWB() always rounds to -inf */ - LTP_pred_Q14 = 2; - LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ 0 ], b_Q14[ 0 ] ); - LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -1 ], b_Q14[ 1 ] ); - LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -2 ], b_Q14[ 2 ] ); - LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -3 ], b_Q14[ 3 ] ); - LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -4 ], b_Q14[ 4 ] ); - LTP_pred_Q14 = silk_LSHIFT( LTP_pred_Q14, 1 ); /* Q13 -> Q14 */ - pred_lag_ptr++; - } else { - LTP_pred_Q14 = 0; - } - - /* Long-term shaping */ - if( lag > 0 ) { - /* Symmetric, packed FIR coefficients */ - n_LTP_Q14 = silk_SMULWB( silk_ADD32( shp_lag_ptr[ 0 ], shp_lag_ptr[ -2 ] ), HarmShapeFIRPacked_Q14 ); - n_LTP_Q14 = silk_SMLAWT( n_LTP_Q14, shp_lag_ptr[ -1 ], HarmShapeFIRPacked_Q14 ); - n_LTP_Q14 = silk_SUB_LSHIFT32( LTP_pred_Q14, n_LTP_Q14, 2 ); /* Q12 -> Q14 */ - shp_lag_ptr++; - } else { - n_LTP_Q14 = 0; - } - - for( k = 0; k < nStatesDelayedDecision; k++ ) { - /* Delayed decision state */ - psDD = &psDelDec[ k ]; - - /* Sample state */ - psSS = psSampleState[ k ]; - - /* Generate dither */ - psDD->Seed = silk_RAND( psDD->Seed ); - - /* Pointer used in short term prediction and shaping */ - psLPC_Q14 = &psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH - 1 + i ]; - /* Short-term prediction */ - silk_assert( predictLPCOrder == 10 || predictLPCOrder == 16 ); - /* Avoids introducing a bias because silk_SMLAWB() always rounds to -inf */ - LPC_pred_Q14 = silk_RSHIFT( predictLPCOrder, 1 ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ 0 ], a_Q12[ 0 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -1 ], a_Q12[ 1 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -2 ], a_Q12[ 2 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -3 ], a_Q12[ 3 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -4 ], a_Q12[ 4 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -5 ], a_Q12[ 5 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -6 ], a_Q12[ 6 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -7 ], a_Q12[ 7 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -8 ], a_Q12[ 8 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -9 ], a_Q12[ 9 ] ); - if( predictLPCOrder == 16 ) { - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -10 ], a_Q12[ 10 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -11 ], a_Q12[ 11 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -12 ], a_Q12[ 12 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -13 ], a_Q12[ 13 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -14 ], a_Q12[ 14 ] ); - LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -15 ], a_Q12[ 15 ] ); - } - LPC_pred_Q14 = silk_LSHIFT( LPC_pred_Q14, 4 ); /* Q10 -> Q14 */ - - /* Noise shape feedback */ - silk_assert( ( shapingLPCOrder & 1 ) == 0 ); /* check that order is even */ - /* Output of lowpass section */ - tmp2 = silk_SMLAWB( psLPC_Q14[ 0 ], psDD->sAR2_Q14[ 0 ], warping_Q16 ); - /* Output of allpass section */ - tmp1 = silk_SMLAWB( psDD->sAR2_Q14[ 0 ], psDD->sAR2_Q14[ 1 ] - tmp2, warping_Q16 ); - psDD->sAR2_Q14[ 0 ] = tmp2; - n_AR_Q14 = silk_RSHIFT( shapingLPCOrder, 1 ); - n_AR_Q14 = silk_SMLAWB( n_AR_Q14, tmp2, AR_shp_Q13[ 0 ] ); - /* Loop over allpass sections */ - for( j = 2; j < shapingLPCOrder; j += 2 ) { - /* Output of allpass section */ - tmp2 = silk_SMLAWB( psDD->sAR2_Q14[ j - 1 ], psDD->sAR2_Q14[ j + 0 ] - tmp1, warping_Q16 ); - psDD->sAR2_Q14[ j - 1 ] = tmp1; - n_AR_Q14 = silk_SMLAWB( n_AR_Q14, tmp1, AR_shp_Q13[ j - 1 ] ); - /* Output of allpass section */ - tmp1 = silk_SMLAWB( psDD->sAR2_Q14[ j + 0 ], psDD->sAR2_Q14[ j + 1 ] - tmp2, warping_Q16 ); - psDD->sAR2_Q14[ j + 0 ] = tmp2; - n_AR_Q14 = silk_SMLAWB( n_AR_Q14, tmp2, AR_shp_Q13[ j ] ); - } - psDD->sAR2_Q14[ shapingLPCOrder - 1 ] = tmp1; - n_AR_Q14 = silk_SMLAWB( n_AR_Q14, tmp1, AR_shp_Q13[ shapingLPCOrder - 1 ] ); - - n_AR_Q14 = silk_LSHIFT( n_AR_Q14, 1 ); /* Q11 -> Q12 */ - n_AR_Q14 = silk_SMLAWB( n_AR_Q14, psDD->LF_AR_Q14, Tilt_Q14 ); /* Q12 */ - n_AR_Q14 = silk_LSHIFT( n_AR_Q14, 2 ); /* Q12 -> Q14 */ - - n_LF_Q14 = silk_SMULWB( psDD->Shape_Q14[ *smpl_buf_idx ], LF_shp_Q14 ); /* Q12 */ - n_LF_Q14 = silk_SMLAWT( n_LF_Q14, psDD->LF_AR_Q14, LF_shp_Q14 ); /* Q12 */ - n_LF_Q14 = silk_LSHIFT( n_LF_Q14, 2 ); /* Q12 -> Q14 */ - - /* Input minus prediction plus noise feedback */ - /* r = x[ i ] - LTP_pred - LPC_pred + n_AR + n_Tilt + n_LF + n_LTP */ - tmp1 = silk_ADD32( n_AR_Q14, n_LF_Q14 ); /* Q14 */ - tmp2 = silk_ADD32( n_LTP_Q14, LPC_pred_Q14 ); /* Q13 */ - tmp1 = silk_SUB32( tmp2, tmp1 ); /* Q13 */ - tmp1 = silk_RSHIFT_ROUND( tmp1, 4 ); /* Q10 */ - - r_Q10 = silk_SUB32( x_Q10[ i ], tmp1 ); /* residual error Q10 */ - - /* Flip sign depending on dither */ - if ( psDD->Seed < 0 ) { - r_Q10 = -r_Q10; - } - r_Q10 = silk_LIMIT_32( r_Q10, -(31 << 10), 30 << 10 ); - - /* Find two quantization level candidates and measure their rate-distortion */ - q1_Q10 = silk_SUB32( r_Q10, offset_Q10 ); - q1_Q0 = silk_RSHIFT( q1_Q10, 10 ); - if( q1_Q0 > 0 ) { - q1_Q10 = silk_SUB32( silk_LSHIFT( q1_Q0, 10 ), QUANT_LEVEL_ADJUST_Q10 ); - q1_Q10 = silk_ADD32( q1_Q10, offset_Q10 ); - q2_Q10 = silk_ADD32( q1_Q10, 1024 ); - rd1_Q10 = silk_SMULBB( q1_Q10, Lambda_Q10 ); - rd2_Q10 = silk_SMULBB( q2_Q10, Lambda_Q10 ); - } else if( q1_Q0 == 0 ) { - q1_Q10 = offset_Q10; - q2_Q10 = silk_ADD32( q1_Q10, 1024 - QUANT_LEVEL_ADJUST_Q10 ); - rd1_Q10 = silk_SMULBB( q1_Q10, Lambda_Q10 ); - rd2_Q10 = silk_SMULBB( q2_Q10, Lambda_Q10 ); - } else if( q1_Q0 == -1 ) { - q2_Q10 = offset_Q10; - q1_Q10 = silk_SUB32( q2_Q10, 1024 - QUANT_LEVEL_ADJUST_Q10 ); - rd1_Q10 = silk_SMULBB( -q1_Q10, Lambda_Q10 ); - rd2_Q10 = silk_SMULBB( q2_Q10, Lambda_Q10 ); - } else { /* q1_Q0 < -1 */ - q1_Q10 = silk_ADD32( silk_LSHIFT( q1_Q0, 10 ), QUANT_LEVEL_ADJUST_Q10 ); - q1_Q10 = silk_ADD32( q1_Q10, offset_Q10 ); - q2_Q10 = silk_ADD32( q1_Q10, 1024 ); - rd1_Q10 = silk_SMULBB( -q1_Q10, Lambda_Q10 ); - rd2_Q10 = silk_SMULBB( -q2_Q10, Lambda_Q10 ); - } - rr_Q10 = silk_SUB32( r_Q10, q1_Q10 ); - rd1_Q10 = silk_RSHIFT( silk_SMLABB( rd1_Q10, rr_Q10, rr_Q10 ), 10 ); - rr_Q10 = silk_SUB32( r_Q10, q2_Q10 ); - rd2_Q10 = silk_RSHIFT( silk_SMLABB( rd2_Q10, rr_Q10, rr_Q10 ), 10 ); - - if( rd1_Q10 < rd2_Q10 ) { - psSS[ 0 ].RD_Q10 = silk_ADD32( psDD->RD_Q10, rd1_Q10 ); - psSS[ 1 ].RD_Q10 = silk_ADD32( psDD->RD_Q10, rd2_Q10 ); - psSS[ 0 ].Q_Q10 = q1_Q10; - psSS[ 1 ].Q_Q10 = q2_Q10; - } else { - psSS[ 0 ].RD_Q10 = silk_ADD32( psDD->RD_Q10, rd2_Q10 ); - psSS[ 1 ].RD_Q10 = silk_ADD32( psDD->RD_Q10, rd1_Q10 ); - psSS[ 0 ].Q_Q10 = q2_Q10; - psSS[ 1 ].Q_Q10 = q1_Q10; - } - - /* Update states for best quantization */ - - /* Quantized excitation */ - exc_Q14 = silk_LSHIFT32( psSS[ 0 ].Q_Q10, 4 ); - if ( psDD->Seed < 0 ) { - exc_Q14 = -exc_Q14; - } - - /* Add predictions */ - LPC_exc_Q14 = silk_ADD32( exc_Q14, LTP_pred_Q14 ); - xq_Q14 = silk_ADD32( LPC_exc_Q14, LPC_pred_Q14 ); - - /* Update states */ - sLF_AR_shp_Q14 = silk_SUB32( xq_Q14, n_AR_Q14 ); - psSS[ 0 ].sLTP_shp_Q14 = silk_SUB32( sLF_AR_shp_Q14, n_LF_Q14 ); - psSS[ 0 ].LF_AR_Q14 = sLF_AR_shp_Q14; - psSS[ 0 ].LPC_exc_Q14 = LPC_exc_Q14; - psSS[ 0 ].xq_Q14 = xq_Q14; - - /* Update states for second best quantization */ - - /* Quantized excitation */ - exc_Q14 = silk_LSHIFT32( psSS[ 1 ].Q_Q10, 4 ); - if ( psDD->Seed < 0 ) { - exc_Q14 = -exc_Q14; - } - - - /* Add predictions */ - LPC_exc_Q14 = silk_ADD32( exc_Q14, LTP_pred_Q14 ); - xq_Q14 = silk_ADD32( LPC_exc_Q14, LPC_pred_Q14 ); - - /* Update states */ - sLF_AR_shp_Q14 = silk_SUB32( xq_Q14, n_AR_Q14 ); - psSS[ 1 ].sLTP_shp_Q14 = silk_SUB32( sLF_AR_shp_Q14, n_LF_Q14 ); - psSS[ 1 ].LF_AR_Q14 = sLF_AR_shp_Q14; - psSS[ 1 ].LPC_exc_Q14 = LPC_exc_Q14; - psSS[ 1 ].xq_Q14 = xq_Q14; - } - - *smpl_buf_idx = ( *smpl_buf_idx - 1 ) & DECISION_DELAY_MASK; /* Index to newest samples */ - last_smple_idx = ( *smpl_buf_idx + decisionDelay ) & DECISION_DELAY_MASK; /* Index to decisionDelay old samples */ - - /* Find winner */ - RDmin_Q10 = psSampleState[ 0 ][ 0 ].RD_Q10; - Winner_ind = 0; - for( k = 1; k < nStatesDelayedDecision; k++ ) { - if( psSampleState[ k ][ 0 ].RD_Q10 < RDmin_Q10 ) { - RDmin_Q10 = psSampleState[ k ][ 0 ].RD_Q10; - Winner_ind = k; - } - } - - /* Increase RD values of expired states */ - Winner_rand_state = psDelDec[ Winner_ind ].RandState[ last_smple_idx ]; - for( k = 0; k < nStatesDelayedDecision; k++ ) { - if( psDelDec[ k ].RandState[ last_smple_idx ] != Winner_rand_state ) { - psSampleState[ k ][ 0 ].RD_Q10 = silk_ADD32( psSampleState[ k ][ 0 ].RD_Q10, silk_int32_MAX >> 4 ); - psSampleState[ k ][ 1 ].RD_Q10 = silk_ADD32( psSampleState[ k ][ 1 ].RD_Q10, silk_int32_MAX >> 4 ); - silk_assert( psSampleState[ k ][ 0 ].RD_Q10 >= 0 ); - } - } - - /* Find worst in first set and best in second set */ - RDmax_Q10 = psSampleState[ 0 ][ 0 ].RD_Q10; - RDmin_Q10 = psSampleState[ 0 ][ 1 ].RD_Q10; - RDmax_ind = 0; - RDmin_ind = 0; - for( k = 1; k < nStatesDelayedDecision; k++ ) { - /* find worst in first set */ - if( psSampleState[ k ][ 0 ].RD_Q10 > RDmax_Q10 ) { - RDmax_Q10 = psSampleState[ k ][ 0 ].RD_Q10; - RDmax_ind = k; - } - /* find best in second set */ - if( psSampleState[ k ][ 1 ].RD_Q10 < RDmin_Q10 ) { - RDmin_Q10 = psSampleState[ k ][ 1 ].RD_Q10; - RDmin_ind = k; - } - } - - /* Replace a state if best from second set outperforms worst in first set */ - if( RDmin_Q10 < RDmax_Q10 ) { - silk_memcpy( ( (opus_int32 *)&psDelDec[ RDmax_ind ] ) + i, - ( (opus_int32 *)&psDelDec[ RDmin_ind ] ) + i, sizeof( NSQ_del_dec_struct ) - i * sizeof( opus_int32) ); - silk_memcpy( &psSampleState[ RDmax_ind ][ 0 ], &psSampleState[ RDmin_ind ][ 1 ], sizeof( NSQ_sample_struct ) ); - } - - /* Write samples from winner to output and long-term filter states */ - psDD = &psDelDec[ Winner_ind ]; - if( subfr > 0 || i >= decisionDelay ) { - pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDD->Q_Q10[ last_smple_idx ], 10 ); - xq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( - silk_SMULWW( psDD->Xq_Q14[ last_smple_idx ], delayedGain_Q10[ last_smple_idx ] ), 8 ) ); - NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - decisionDelay ] = psDD->Shape_Q14[ last_smple_idx ]; - sLTP_Q15[ NSQ->sLTP_buf_idx - decisionDelay ] = psDD->Pred_Q15[ last_smple_idx ]; - } - NSQ->sLTP_shp_buf_idx++; - NSQ->sLTP_buf_idx++; - - /* Update states */ - for( k = 0; k < nStatesDelayedDecision; k++ ) { - psDD = &psDelDec[ k ]; - psSS = &psSampleState[ k ][ 0 ]; - psDD->LF_AR_Q14 = psSS->LF_AR_Q14; - psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH + i ] = psSS->xq_Q14; - psDD->Xq_Q14[ *smpl_buf_idx ] = psSS->xq_Q14; - psDD->Q_Q10[ *smpl_buf_idx ] = psSS->Q_Q10; - psDD->Pred_Q15[ *smpl_buf_idx ] = silk_LSHIFT32( psSS->LPC_exc_Q14, 1 ); - psDD->Shape_Q14[ *smpl_buf_idx ] = psSS->sLTP_shp_Q14; - psDD->Seed = silk_ADD32_ovflw( psDD->Seed, silk_RSHIFT_ROUND( psSS->Q_Q10, 10 ) ); - psDD->RandState[ *smpl_buf_idx ] = psDD->Seed; - psDD->RD_Q10 = psSS->RD_Q10; - } - delayedGain_Q10[ *smpl_buf_idx ] = Gain_Q10; - } - /* Update LPC states */ - for( k = 0; k < nStatesDelayedDecision; k++ ) { - psDD = &psDelDec[ k ]; - silk_memcpy( psDD->sLPC_Q14, &psDD->sLPC_Q14[ length ], NSQ_LPC_BUF_LENGTH * sizeof( opus_int32 ) ); - } -} - -static inline void silk_nsq_del_dec_scale_states( - const silk_encoder_state *psEncC, /* I Encoder State */ - silk_nsq_state *NSQ, /* I/O NSQ state */ - NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */ - const opus_int32 x_Q3[], /* I Input in Q3 */ - opus_int32 x_sc_Q10[], /* O Input scaled with 1/Gain in Q10 */ - const opus_int16 sLTP[], /* I Re-whitened LTP state in Q0 */ - opus_int32 sLTP_Q15[], /* O LTP state matching scaled input */ - opus_int subfr, /* I Subframe number */ - opus_int nStatesDelayedDecision, /* I Number of del dec states */ - const opus_int LTP_scale_Q14, /* I LTP state scaling */ - const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I */ - const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag */ - const opus_int signal_type, /* I Signal type */ - const opus_int decisionDelay /* I Decision delay */ -) -{ - opus_int i, k, lag; - opus_int32 gain_adj_Q16, inv_gain_Q31, inv_gain_Q23; - NSQ_del_dec_struct *psDD; - - lag = pitchL[ subfr ]; - inv_gain_Q31 = silk_INVERSE32_varQ( silk_max( Gains_Q16[ subfr ], 1 ), 47 ); - silk_assert( inv_gain_Q31 != 0 ); - - /* Calculate gain adjustment factor */ - if( Gains_Q16[ subfr ] != NSQ->prev_gain_Q16 ) { - gain_adj_Q16 = silk_DIV32_varQ( NSQ->prev_gain_Q16, Gains_Q16[ subfr ], 16 ); - } else { - gain_adj_Q16 = (opus_int32)1 << 16; - } - - /* Scale input */ - inv_gain_Q23 = silk_RSHIFT_ROUND( inv_gain_Q31, 8 ); - for( i = 0; i < psEncC->subfr_length; i++ ) { - x_sc_Q10[ i ] = silk_SMULWW( x_Q3[ i ], inv_gain_Q23 ); - } - - /* Save inverse gain */ - NSQ->prev_gain_Q16 = Gains_Q16[ subfr ]; - - /* After rewhitening the LTP state is un-scaled, so scale with inv_gain_Q16 */ - if( NSQ->rewhite_flag ) { - if( subfr == 0 ) { - /* Do LTP downscaling */ - inv_gain_Q31 = silk_LSHIFT( silk_SMULWB( inv_gain_Q31, LTP_scale_Q14 ), 2 ); - } - for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx; i++ ) { - silk_assert( i < MAX_FRAME_LENGTH ); - sLTP_Q15[ i ] = silk_SMULWB( inv_gain_Q31, sLTP[ i ] ); - } - } - - /* Adjust for changing gain */ - if( gain_adj_Q16 != (opus_int32)1 << 16 ) { - /* Scale long-term shaping state */ - for( i = NSQ->sLTP_shp_buf_idx - psEncC->ltp_mem_length; i < NSQ->sLTP_shp_buf_idx; i++ ) { - NSQ->sLTP_shp_Q14[ i ] = silk_SMULWW( gain_adj_Q16, NSQ->sLTP_shp_Q14[ i ] ); - } - - /* Scale long-term prediction state */ - if( signal_type == TYPE_VOICED && NSQ->rewhite_flag == 0 ) { - for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx - decisionDelay; i++ ) { - sLTP_Q15[ i ] = silk_SMULWW( gain_adj_Q16, sLTP_Q15[ i ] ); - } - } - - for( k = 0; k < nStatesDelayedDecision; k++ ) { - psDD = &psDelDec[ k ]; - - /* Scale scalar states */ - psDD->LF_AR_Q14 = silk_SMULWW( gain_adj_Q16, psDD->LF_AR_Q14 ); - - /* Scale short-term prediction and shaping states */ - for( i = 0; i < NSQ_LPC_BUF_LENGTH; i++ ) { - psDD->sLPC_Q14[ i ] = silk_SMULWW( gain_adj_Q16, psDD->sLPC_Q14[ i ] ); - } - for( i = 0; i < MAX_SHAPE_LPC_ORDER; i++ ) { - psDD->sAR2_Q14[ i ] = silk_SMULWW( gain_adj_Q16, psDD->sAR2_Q14[ i ] ); - } - for( i = 0; i < DECISION_DELAY; i++ ) { - psDD->Pred_Q15[ i ] = silk_SMULWW( gain_adj_Q16, psDD->Pred_Q15[ i ] ); - psDD->Shape_Q14[ i ] = silk_SMULWW( gain_adj_Q16, psDD->Shape_Q14[ i ] ); - } - } - } -} |