| /*********************************************************************** |
| Copyright (c) 2017 Google Inc. |
| 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 <arm_neon.h> |
| #ifdef OPUS_CHECK_ASM |
| # include <string.h> |
| #endif |
| #include "main.h" |
| #include "stack_alloc.h" |
| |
| /* NEON intrinsics optimization now can only parallelize up to 4 delay decision states. */ |
| /* If there are more states, C function is called, and this optimization must be expanded. */ |
| #define NEON_MAX_DEL_DEC_STATES 4 |
| |
| typedef struct { |
| opus_int32 sLPC_Q14[ MAX_SUB_FRAME_LENGTH + NSQ_LPC_BUF_LENGTH ][ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 RandState[ DECISION_DELAY ][ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 Q_Q10[ DECISION_DELAY ][ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 Xq_Q14[ DECISION_DELAY ][ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 Pred_Q15[ DECISION_DELAY ][ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 Shape_Q14[ DECISION_DELAY ][ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 sAR2_Q14[ MAX_SHAPE_LPC_ORDER ][ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 LF_AR_Q14[ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 Diff_Q14[ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 Seed[ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 SeedInit[ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 RD_Q10[ NEON_MAX_DEL_DEC_STATES ]; |
| } NSQ_del_decs_struct; |
| |
| typedef struct { |
| opus_int32 Q_Q10[ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 RD_Q10[ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 xq_Q14[ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 LF_AR_Q14[ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 Diff_Q14[ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 sLTP_shp_Q14[ NEON_MAX_DEL_DEC_STATES ]; |
| opus_int32 LPC_exc_Q14[ NEON_MAX_DEL_DEC_STATES ]; |
| } NSQ_samples_struct; |
| |
| static OPUS_INLINE void silk_nsq_del_dec_scale_states_neon( |
| const silk_encoder_state *psEncC, /* I Encoder State */ |
| silk_nsq_state *NSQ, /* I/O NSQ state */ |
| NSQ_del_decs_struct psDelDec[], /* I/O Delayed decision states */ |
| const opus_int16 x16[], /* I Input */ |
| 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 */ |
| 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 OPUS_INLINE void silk_noise_shape_quantizer_del_dec_neon( |
| silk_nsq_state *NSQ, /* I/O NSQ state */ |
| NSQ_del_decs_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/O Index to newest samples in buffers */ |
| opus_int decisionDelay /* I */ |
| ); |
| |
| static OPUS_INLINE void copy_winner_state_kernel( |
| const NSQ_del_decs_struct *psDelDec, |
| const opus_int offset, |
| const opus_int last_smple_idx, |
| const opus_int Winner_ind, |
| const int32x2_t gain_lo_s32x2, |
| const int32x2_t gain_hi_s32x2, |
| const int32x4_t shift_s32x4, |
| int32x4_t t0_s32x4, |
| int32x4_t t1_s32x4, |
| opus_int8 *const pulses, |
| opus_int16 *pxq, |
| silk_nsq_state *NSQ |
| ) |
| { |
| int16x8_t t_s16x8; |
| int32x4_t o0_s32x4, o1_s32x4; |
| |
| t0_s32x4 = vld1q_lane_s32( &psDelDec->Q_Q10[ last_smple_idx - 0 ][ Winner_ind ], t0_s32x4, 0 ); |
| t0_s32x4 = vld1q_lane_s32( &psDelDec->Q_Q10[ last_smple_idx - 1 ][ Winner_ind ], t0_s32x4, 1 ); |
| t0_s32x4 = vld1q_lane_s32( &psDelDec->Q_Q10[ last_smple_idx - 2 ][ Winner_ind ], t0_s32x4, 2 ); |
| t0_s32x4 = vld1q_lane_s32( &psDelDec->Q_Q10[ last_smple_idx - 3 ][ Winner_ind ], t0_s32x4, 3 ); |
| t1_s32x4 = vld1q_lane_s32( &psDelDec->Q_Q10[ last_smple_idx - 4 ][ Winner_ind ], t1_s32x4, 0 ); |
| t1_s32x4 = vld1q_lane_s32( &psDelDec->Q_Q10[ last_smple_idx - 5 ][ Winner_ind ], t1_s32x4, 1 ); |
| t1_s32x4 = vld1q_lane_s32( &psDelDec->Q_Q10[ last_smple_idx - 6 ][ Winner_ind ], t1_s32x4, 2 ); |
| t1_s32x4 = vld1q_lane_s32( &psDelDec->Q_Q10[ last_smple_idx - 7 ][ Winner_ind ], t1_s32x4, 3 ); |
| t_s16x8 = vcombine_s16( vrshrn_n_s32( t0_s32x4, 10 ), vrshrn_n_s32( t1_s32x4, 10 ) ); |
| vst1_s8( &pulses[ offset ], vmovn_s16( t_s16x8 ) ); |
| |
| t0_s32x4 = vld1q_lane_s32( &psDelDec->Xq_Q14[ last_smple_idx - 0 ][ Winner_ind ], t0_s32x4, 0 ); |
| t0_s32x4 = vld1q_lane_s32( &psDelDec->Xq_Q14[ last_smple_idx - 1 ][ Winner_ind ], t0_s32x4, 1 ); |
| t0_s32x4 = vld1q_lane_s32( &psDelDec->Xq_Q14[ last_smple_idx - 2 ][ Winner_ind ], t0_s32x4, 2 ); |
| t0_s32x4 = vld1q_lane_s32( &psDelDec->Xq_Q14[ last_smple_idx - 3 ][ Winner_ind ], t0_s32x4, 3 ); |
| t1_s32x4 = vld1q_lane_s32( &psDelDec->Xq_Q14[ last_smple_idx - 4 ][ Winner_ind ], t1_s32x4, 0 ); |
| t1_s32x4 = vld1q_lane_s32( &psDelDec->Xq_Q14[ last_smple_idx - 5 ][ Winner_ind ], t1_s32x4, 1 ); |
| t1_s32x4 = vld1q_lane_s32( &psDelDec->Xq_Q14[ last_smple_idx - 6 ][ Winner_ind ], t1_s32x4, 2 ); |
| t1_s32x4 = vld1q_lane_s32( &psDelDec->Xq_Q14[ last_smple_idx - 7 ][ Winner_ind ], t1_s32x4, 3 ); |
| o0_s32x4 = vqdmulhq_lane_s32( t0_s32x4, gain_lo_s32x2, 0 ); |
| o1_s32x4 = vqdmulhq_lane_s32( t1_s32x4, gain_lo_s32x2, 0 ); |
| o0_s32x4 = vmlaq_lane_s32( o0_s32x4, t0_s32x4, gain_hi_s32x2, 0 ); |
| o1_s32x4 = vmlaq_lane_s32( o1_s32x4, t1_s32x4, gain_hi_s32x2, 0 ); |
| o0_s32x4 = vrshlq_s32( o0_s32x4, shift_s32x4 ); |
| o1_s32x4 = vrshlq_s32( o1_s32x4, shift_s32x4 ); |
| vst1_s16( &pxq[ offset + 0 ], vqmovn_s32( o0_s32x4 ) ); |
| vst1_s16( &pxq[ offset + 4 ], vqmovn_s32( o1_s32x4 ) ); |
| |
| t0_s32x4 = vld1q_lane_s32( &psDelDec->Shape_Q14[ last_smple_idx - 0 ][ Winner_ind ], t0_s32x4, 0 ); |
| t0_s32x4 = vld1q_lane_s32( &psDelDec->Shape_Q14[ last_smple_idx - 1 ][ Winner_ind ], t0_s32x4, 1 ); |
| t0_s32x4 = vld1q_lane_s32( &psDelDec->Shape_Q14[ last_smple_idx - 2 ][ Winner_ind ], t0_s32x4, 2 ); |
| t0_s32x4 = vld1q_lane_s32( &psDelDec->Shape_Q14[ last_smple_idx - 3 ][ Winner_ind ], t0_s32x4, 3 ); |
| t1_s32x4 = vld1q_lane_s32( &psDelDec->Shape_Q14[ last_smple_idx - 4 ][ Winner_ind ], t1_s32x4, 0 ); |
| t1_s32x4 = vld1q_lane_s32( &psDelDec->Shape_Q14[ last_smple_idx - 5 ][ Winner_ind ], t1_s32x4, 1 ); |
| t1_s32x4 = vld1q_lane_s32( &psDelDec->Shape_Q14[ last_smple_idx - 6 ][ Winner_ind ], t1_s32x4, 2 ); |
| t1_s32x4 = vld1q_lane_s32( &psDelDec->Shape_Q14[ last_smple_idx - 7 ][ Winner_ind ], t1_s32x4, 3 ); |
| vst1q_s32( &NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx + offset + 0 ], t0_s32x4 ); |
| vst1q_s32( &NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx + offset + 4 ], t1_s32x4 ); |
| } |
| |
| static OPUS_INLINE void copy_winner_state( |
| const NSQ_del_decs_struct *psDelDec, |
| const opus_int decisionDelay, |
| const opus_int smpl_buf_idx, |
| const opus_int Winner_ind, |
| const opus_int32 gain, |
| const opus_int32 shift, |
| opus_int8 *const pulses, |
| opus_int16 *pxq, |
| silk_nsq_state *NSQ |
| ) |
| { |
| opus_int i, last_smple_idx; |
| const int32x2_t gain_lo_s32x2 = vdup_n_s32( silk_LSHIFT32( gain & 0x0000FFFF, 15 ) ); |
| const int32x2_t gain_hi_s32x2 = vdup_n_s32( gain >> 16 ); |
| const int32x4_t shift_s32x4 = vdupq_n_s32( -shift ); |
| int32x4_t t0_s32x4, t1_s32x4; |
| |
| t0_s32x4 = t1_s32x4 = vdupq_n_s32( 0 ); /* initialization */ |
| last_smple_idx = smpl_buf_idx + decisionDelay - 1 + DECISION_DELAY; |
| if( last_smple_idx >= DECISION_DELAY ) last_smple_idx -= DECISION_DELAY; |
| if( last_smple_idx >= DECISION_DELAY ) last_smple_idx -= DECISION_DELAY; |
| |
| for( i = 0; ( i < ( decisionDelay - 7 ) ) && ( last_smple_idx >= 7 ); i += 8, last_smple_idx -= 8 ) { |
| copy_winner_state_kernel( psDelDec, i - decisionDelay, last_smple_idx, Winner_ind, gain_lo_s32x2, gain_hi_s32x2, shift_s32x4, t0_s32x4, t1_s32x4, pulses, pxq, NSQ ); |
| } |
| for( ; ( i < decisionDelay ) && ( last_smple_idx >= 0 ); i++, last_smple_idx-- ) { |
| pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDelDec->Q_Q10[ last_smple_idx ][ Winner_ind ], 10 ); |
| pxq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( silk_SMULWW( psDelDec->Xq_Q14[ last_smple_idx ][ Winner_ind ], gain ), shift ) ); |
| NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - decisionDelay + i ] = psDelDec->Shape_Q14[ last_smple_idx ][ Winner_ind ]; |
| } |
| |
| last_smple_idx += DECISION_DELAY; |
| for( ; i < ( decisionDelay - 7 ); i++, last_smple_idx-- ) { |
| copy_winner_state_kernel( psDelDec, i - decisionDelay, last_smple_idx, Winner_ind, gain_lo_s32x2, gain_hi_s32x2, shift_s32x4, t0_s32x4, t1_s32x4, pulses, pxq, NSQ ); |
| } |
| for( ; i < decisionDelay; i++, last_smple_idx-- ) { |
| pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDelDec->Q_Q10[ last_smple_idx ][ Winner_ind ], 10 ); |
| pxq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( silk_SMULWW( psDelDec->Xq_Q14[ last_smple_idx ][ Winner_ind ], gain ), shift ) ); |
| NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - decisionDelay + i ] = psDelDec->Shape_Q14[ last_smple_idx ][ Winner_ind ]; |
| } |
| } |
| |
| void silk_NSQ_del_dec_neon( |
| const silk_encoder_state *psEncC, /* I Encoder State */ |
| silk_nsq_state *NSQ, /* I/O NSQ state */ |
| SideInfoIndices *psIndices, /* I/O Quantization Indices */ |
| const opus_int16 x16[], /* I Input */ |
| 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 AR_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 */ |
| ) |
| { |
| #ifdef OPUS_CHECK_ASM |
| silk_nsq_state NSQ_c; |
| SideInfoIndices psIndices_c; |
| opus_int8 pulses_c[ MAX_FRAME_LENGTH ]; |
| const opus_int8 *const pulses_a = pulses; |
| |
| ( void )pulses_a; |
| silk_memcpy( &NSQ_c, NSQ, sizeof( NSQ_c ) ); |
| silk_memcpy( &psIndices_c, psIndices, sizeof( psIndices_c ) ); |
| silk_memcpy( pulses_c, pulses, sizeof( pulses_c ) ); |
| silk_NSQ_del_dec_c( psEncC, &NSQ_c, &psIndices_c, x16, pulses_c, PredCoef_Q12, LTPCoef_Q14, AR_Q13, HarmShapeGain_Q14, Tilt_Q14, LF_shp_Q14, Gains_Q16, |
| pitchL, Lambda_Q10, LTP_scale_Q14 ); |
| #endif |
| |
| /* The optimization parallelizes the different delay decision states. */ |
| if(( psEncC->nStatesDelayedDecision > NEON_MAX_DEL_DEC_STATES ) || ( psEncC->nStatesDelayedDecision <= 2 )) { |
| /* NEON intrinsics optimization now can only parallelize up to 4 delay decision states. */ |
| /* If there are more states, C function is called, and this optimization must be expanded. */ |
| /* When the number of delay decision states is less than 3, there are penalties using this */ |
| /* optimization, and C function is called. */ |
| /* When the number of delay decision states is 2, it's better to specialize another */ |
| /* structure NSQ_del_dec2_struct and optimize with shorter NEON registers. (Low priority) */ |
| silk_NSQ_del_dec_c( psEncC, NSQ, psIndices, x16, pulses, PredCoef_Q12, LTPCoef_Q14, AR_Q13, HarmShapeGain_Q14, |
| Tilt_Q14, LF_shp_Q14, Gains_Q16, pitchL, Lambda_Q10, LTP_scale_Q14 ); |
| } else { |
| opus_int i, k, lag, start_idx, LSF_interpolation_flag, Winner_ind, subfr; |
| opus_int smpl_buf_idx, decisionDelay; |
| const opus_int16 *A_Q12, *B_Q14, *AR_shp_Q13; |
| opus_int16 *pxq; |
| VARDECL( opus_int32, sLTP_Q15 ); |
| VARDECL( opus_int16, sLTP ); |
| opus_int32 HarmShapeFIRPacked_Q14; |
| opus_int offset_Q10; |
| opus_int32 RDmin_Q10, Gain_Q10; |
| VARDECL( opus_int32, x_sc_Q10 ); |
| VARDECL( opus_int32, delayedGain_Q10 ); |
| VARDECL( NSQ_del_decs_struct, psDelDec ); |
| int32x4_t t_s32x4; |
| SAVE_STACK; |
| |
| /* 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 */ |
| ALLOC( psDelDec, 1, NSQ_del_decs_struct ); |
| /* Only RandState and RD_Q10 need to be initialized to 0. */ |
| silk_memset( psDelDec->RandState, 0, sizeof( psDelDec->RandState ) ); |
| vst1q_s32( psDelDec->RD_Q10, vdupq_n_s32( 0 ) ); |
| |
| for( k = 0; k < psEncC->nStatesDelayedDecision; k++ ) { |
| psDelDec->SeedInit[ k ] = psDelDec->Seed[ k ] = ( k + psIndices->Seed ) & 3; |
| } |
| vst1q_s32( psDelDec->LF_AR_Q14, vld1q_dup_s32( &NSQ->sLF_AR_shp_Q14 ) ); |
| vst1q_s32( psDelDec->Diff_Q14, vld1q_dup_s32( &NSQ->sDiff_shp_Q14 ) ); |
| vst1q_s32( psDelDec->Shape_Q14[ 0 ], vld1q_dup_s32( &NSQ->sLTP_shp_Q14[ psEncC->ltp_mem_length - 1 ] ) ); |
| for( i = 0; i < NSQ_LPC_BUF_LENGTH; i++ ) { |
| vst1q_s32( psDelDec->sLPC_Q14[ i ], vld1q_dup_s32( &NSQ->sLPC_Q14[ i ] ) ); |
| } |
| for( i = 0; i < (opus_int)( sizeof( NSQ->sAR2_Q14 ) / sizeof( NSQ->sAR2_Q14[ 0 ] ) ); i++ ) { |
| vst1q_s32( psDelDec->sAR2_Q14[ i ], vld1q_dup_s32( &NSQ->sAR2_Q14[ i ] ) ); |
| } |
| |
| 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 ) { |
| opus_int pitch_min = pitchL[ 0 ]; |
| for( k = 1; k < psEncC->nb_subfr; k++ ) { |
| pitch_min = silk_min_int( pitch_min, pitchL[ k ] ); |
| } |
| decisionDelay = silk_min_int( decisionDelay, pitch_min - 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; |
| } |
| |
| ALLOC( sLTP_Q15, psEncC->ltp_mem_length + psEncC->frame_length, opus_int32 ); |
| ALLOC( sLTP, psEncC->ltp_mem_length + psEncC->frame_length, opus_int16 ); |
| ALLOC( x_sc_Q10, psEncC->subfr_length, opus_int32 ); |
| ALLOC( delayedGain_Q10, DECISION_DELAY, opus_int32 ); |
| /* 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 = &AR_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 */ |
| int32x4_t RD_Q10_s32x4; |
| RDmin_Q10 = psDelDec->RD_Q10[ 0 ]; |
| Winner_ind = 0; |
| for( i = 1; i < psEncC->nStatesDelayedDecision; i++ ) { |
| if( psDelDec->RD_Q10[ i ] < RDmin_Q10 ) { |
| RDmin_Q10 = psDelDec->RD_Q10[ i ]; |
| Winner_ind = i; |
| } |
| } |
| psDelDec->RD_Q10[ Winner_ind ] -= ( silk_int32_MAX >> 4 ); |
| RD_Q10_s32x4 = vld1q_s32( psDelDec->RD_Q10 ); |
| RD_Q10_s32x4 = vaddq_s32( RD_Q10_s32x4, vdupq_n_s32( silk_int32_MAX >> 4 ) ); |
| vst1q_s32( psDelDec->RD_Q10, RD_Q10_s32x4 ); |
| |
| /* Copy final part of signals from winner state to output and long-term filter states */ |
| copy_winner_state( psDelDec, decisionDelay, smpl_buf_idx, Winner_ind, Gains_Q16[ 1 ], 14, pulses, pxq, NSQ ); |
| |
| 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, psEncC->arch ); |
| |
| NSQ->sLTP_buf_idx = psEncC->ltp_mem_length; |
| NSQ->rewhite_flag = 1; |
| } |
| } |
| |
| silk_nsq_del_dec_scale_states_neon( psEncC, NSQ, psDelDec, x16, x_sc_Q10, sLTP, sLTP_Q15, k, |
| LTP_scale_Q14, Gains_Q16, pitchL, psIndices->signalType, decisionDelay ); |
| |
| silk_noise_shape_quantizer_del_dec_neon( 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 ); |
| |
| x16 += psEncC->subfr_length; |
| pulses += psEncC->subfr_length; |
| pxq += psEncC->subfr_length; |
| } |
| |
| /* Find winner */ |
| RDmin_Q10 = psDelDec->RD_Q10[ 0 ]; |
| Winner_ind = 0; |
| for( k = 1; k < psEncC->nStatesDelayedDecision; k++ ) { |
| if( psDelDec->RD_Q10[ k ] < RDmin_Q10 ) { |
| RDmin_Q10 = psDelDec->RD_Q10[ k ]; |
| Winner_ind = k; |
| } |
| } |
| |
| /* Copy final part of signals from winner state to output and long-term filter states */ |
| psIndices->Seed = psDelDec->SeedInit[ Winner_ind ]; |
| Gain_Q10 = silk_RSHIFT32( Gains_Q16[ psEncC->nb_subfr - 1 ], 6 ); |
| copy_winner_state( psDelDec, decisionDelay, smpl_buf_idx, Winner_ind, Gain_Q10, 8, pulses, pxq, NSQ ); |
| |
| t_s32x4 = vdupq_n_s32( 0 ); /* initialization */ |
| for( i = 0; i < ( NSQ_LPC_BUF_LENGTH - 3 ); i += 4 ) { |
| t_s32x4 = vld1q_lane_s32( &psDelDec->sLPC_Q14[ i + 0 ][ Winner_ind ], t_s32x4, 0 ); |
| t_s32x4 = vld1q_lane_s32( &psDelDec->sLPC_Q14[ i + 1 ][ Winner_ind ], t_s32x4, 1 ); |
| t_s32x4 = vld1q_lane_s32( &psDelDec->sLPC_Q14[ i + 2 ][ Winner_ind ], t_s32x4, 2 ); |
| t_s32x4 = vld1q_lane_s32( &psDelDec->sLPC_Q14[ i + 3 ][ Winner_ind ], t_s32x4, 3 ); |
| vst1q_s32( &NSQ->sLPC_Q14[ i ], t_s32x4 ); |
| } |
| |
| for( ; i < NSQ_LPC_BUF_LENGTH; i++ ) { |
| NSQ->sLPC_Q14[ i ] = psDelDec->sLPC_Q14[ i ][ Winner_ind ]; |
| } |
| |
| for( i = 0; i < (opus_int)( sizeof( NSQ->sAR2_Q14 ) / sizeof( NSQ->sAR2_Q14[ 0 ] ) - 3 ); i += 4 ) { |
| t_s32x4 = vld1q_lane_s32( &psDelDec->sAR2_Q14[ i + 0 ][ Winner_ind ], t_s32x4, 0 ); |
| t_s32x4 = vld1q_lane_s32( &psDelDec->sAR2_Q14[ i + 1 ][ Winner_ind ], t_s32x4, 1 ); |
| t_s32x4 = vld1q_lane_s32( &psDelDec->sAR2_Q14[ i + 2 ][ Winner_ind ], t_s32x4, 2 ); |
| t_s32x4 = vld1q_lane_s32( &psDelDec->sAR2_Q14[ i + 3 ][ Winner_ind ], t_s32x4, 3 ); |
| vst1q_s32( &NSQ->sAR2_Q14[ i ], t_s32x4 ); |
| } |
| |
| for( ; i < (opus_int)( sizeof( NSQ->sAR2_Q14 ) / sizeof( NSQ->sAR2_Q14[ 0 ] ) ); i++ ) { |
| NSQ->sAR2_Q14[ i ] = psDelDec->sAR2_Q14[ i ][ Winner_ind ]; |
| } |
| |
| /* Update states */ |
| NSQ->sLF_AR_shp_Q14 = psDelDec->LF_AR_Q14[ Winner_ind ]; |
| NSQ->sDiff_shp_Q14 = psDelDec->Diff_Q14[ Winner_ind ]; |
| NSQ->lagPrev = pitchL[ psEncC->nb_subfr - 1 ]; |
| |
| /* Save quantized speech signal */ |
| 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 ) ); |
| RESTORE_STACK; |
| } |
| |
| #ifdef OPUS_CHECK_ASM |
| silk_assert( !memcmp( &NSQ_c, NSQ, sizeof( NSQ_c ) ) ); |
| silk_assert( !memcmp( &psIndices_c, psIndices, sizeof( psIndices_c ) ) ); |
| silk_assert( !memcmp( pulses_c, pulses_a, sizeof( pulses_c ) ) ); |
| #endif |
| } |
| |
| /******************************************/ |
| /* Noise shape quantizer for one subframe */ |
| /******************************************/ |
| /* Note: Function silk_short_prediction_create_arch_coef_neon() defined in NSQ_neon.h is actually a hacking C function. */ |
| /* Therefore here we append "_local" to the NEON function name to avoid confusion. */ |
| static OPUS_INLINE void silk_short_prediction_create_arch_coef_neon_local(opus_int32 *out, const opus_int16 *in, opus_int order) |
| { |
| int16x8_t t_s16x8; |
| int32x4_t t0_s32x4, t1_s32x4, t2_s32x4, t3_s32x4; |
| silk_assert( order == 10 || order == 16 ); |
| |
| t_s16x8 = vld1q_s16( in + 0 ); /* 7 6 5 4 3 2 1 0 */ |
| t_s16x8 = vrev64q_s16( t_s16x8 ); /* 4 5 6 7 0 1 2 3 */ |
| t2_s32x4 = vshll_n_s16( vget_high_s16( t_s16x8 ), 15 ); /* 4 5 6 7 */ |
| t3_s32x4 = vshll_n_s16( vget_low_s16( t_s16x8 ), 15 ); /* 0 1 2 3 */ |
| |
| if( order == 16 ) { |
| t_s16x8 = vld1q_s16( in + 8 ); /* F E D C B A 9 8 */ |
| t_s16x8 = vrev64q_s16( t_s16x8 ); /* C D E F 8 9 A B */ |
| t0_s32x4 = vshll_n_s16( vget_high_s16( t_s16x8 ), 15 ); /* C D E F */ |
| t1_s32x4 = vshll_n_s16( vget_low_s16( t_s16x8 ), 15 ); /* 8 9 A B */ |
| } else { |
| int16x4_t t_s16x4; |
| |
| t0_s32x4 = vdupq_n_s32( 0 ); /* zero zero zero zero */ |
| t_s16x4 = vld1_s16( in + 6 ); /* 9 8 7 6 */ |
| t_s16x4 = vrev64_s16( t_s16x4 ); /* 6 7 8 9 */ |
| t1_s32x4 = vshll_n_s16( t_s16x4, 15 ); |
| t1_s32x4 = vcombine_s32( vget_low_s32(t0_s32x4), vget_low_s32( t1_s32x4 ) ); /* 8 9 zero zero */ |
| } |
| vst1q_s32( out + 0, t0_s32x4 ); |
| vst1q_s32( out + 4, t1_s32x4 ); |
| vst1q_s32( out + 8, t2_s32x4 ); |
| vst1q_s32( out + 12, t3_s32x4 ); |
| } |
| |
| static OPUS_INLINE int32x4_t silk_SMLAWB_lane0_neon( |
| const int32x4_t out_s32x4, |
| const int32x4_t in_s32x4, |
| const int32x2_t coef_s32x2 |
| ) |
| { |
| return vaddq_s32( out_s32x4, vqdmulhq_lane_s32( in_s32x4, coef_s32x2, 0 ) ); |
| } |
| |
| static OPUS_INLINE int32x4_t silk_SMLAWB_lane1_neon( |
| const int32x4_t out_s32x4, |
| const int32x4_t in_s32x4, |
| const int32x2_t coef_s32x2 |
| ) |
| { |
| return vaddq_s32( out_s32x4, vqdmulhq_lane_s32( in_s32x4, coef_s32x2, 1 ) ); |
| } |
| |
| /* Note: This function has different return value than silk_noise_shape_quantizer_short_prediction_neon(). */ |
| /* Therefore here we append "_local" to the function name to avoid confusion. */ |
| static OPUS_INLINE int32x4_t silk_noise_shape_quantizer_short_prediction_neon_local(const opus_int32 *buf32, const opus_int32 *a_Q12_arch, opus_int order) |
| { |
| const int32x4_t a_Q12_arch0_s32x4 = vld1q_s32( a_Q12_arch + 0 ); |
| const int32x4_t a_Q12_arch1_s32x4 = vld1q_s32( a_Q12_arch + 4 ); |
| const int32x4_t a_Q12_arch2_s32x4 = vld1q_s32( a_Q12_arch + 8 ); |
| const int32x4_t a_Q12_arch3_s32x4 = vld1q_s32( a_Q12_arch + 12 ); |
| int32x4_t LPC_pred_Q14_s32x4; |
| |
| silk_assert( order == 10 || order == 16 ); |
| /* Avoids introducing a bias because silk_SMLAWB() always rounds to -inf */ |
| LPC_pred_Q14_s32x4 = vdupq_n_s32( silk_RSHIFT( order, 1 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane0_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 0 * NEON_MAX_DEL_DEC_STATES ), vget_low_s32( a_Q12_arch0_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane1_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 1 * NEON_MAX_DEL_DEC_STATES ), vget_low_s32( a_Q12_arch0_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane0_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 2 * NEON_MAX_DEL_DEC_STATES ), vget_high_s32( a_Q12_arch0_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane1_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 3 * NEON_MAX_DEL_DEC_STATES ), vget_high_s32( a_Q12_arch0_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane0_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 4 * NEON_MAX_DEL_DEC_STATES ), vget_low_s32( a_Q12_arch1_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane1_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 5 * NEON_MAX_DEL_DEC_STATES ), vget_low_s32( a_Q12_arch1_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane0_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 6 * NEON_MAX_DEL_DEC_STATES ), vget_high_s32( a_Q12_arch1_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane1_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 7 * NEON_MAX_DEL_DEC_STATES ), vget_high_s32( a_Q12_arch1_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane0_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 8 * NEON_MAX_DEL_DEC_STATES ), vget_low_s32( a_Q12_arch2_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane1_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 9 * NEON_MAX_DEL_DEC_STATES ), vget_low_s32( a_Q12_arch2_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane0_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 10 * NEON_MAX_DEL_DEC_STATES ), vget_high_s32( a_Q12_arch2_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane1_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 11 * NEON_MAX_DEL_DEC_STATES ), vget_high_s32( a_Q12_arch2_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane0_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 12 * NEON_MAX_DEL_DEC_STATES ), vget_low_s32( a_Q12_arch3_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane1_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 13 * NEON_MAX_DEL_DEC_STATES ), vget_low_s32( a_Q12_arch3_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane0_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 14 * NEON_MAX_DEL_DEC_STATES ), vget_high_s32( a_Q12_arch3_s32x4 ) ); |
| LPC_pred_Q14_s32x4 = silk_SMLAWB_lane1_neon( LPC_pred_Q14_s32x4, vld1q_s32( buf32 + 15 * NEON_MAX_DEL_DEC_STATES ), vget_high_s32( a_Q12_arch3_s32x4 ) ); |
| |
| return LPC_pred_Q14_s32x4; |
| } |
| |
| static OPUS_INLINE void silk_noise_shape_quantizer_del_dec_neon( |
| silk_nsq_state *NSQ, /* I/O NSQ state */ |
| NSQ_del_decs_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/O 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, n_LTP_Q14; |
| opus_int32 RDmin_Q10, RDmax_Q10; |
| opus_int32 Gain_Q10; |
| opus_int32 *pred_lag_ptr, *shp_lag_ptr; |
| opus_int32 a_Q12_arch[MAX_LPC_ORDER]; |
| const int32x2_t warping_Q16_s32x2 = vdup_n_s32( silk_LSHIFT32( warping_Q16, 16 ) >> 1 ); |
| const opus_int32 LF_shp_Q29 = silk_LSHIFT32( LF_shp_Q14, 16 ) >> 1; |
| opus_int32 AR_shp_Q28[ MAX_SHAPE_LPC_ORDER ]; |
| const uint32x4_t rand_multiplier_u32x4 = vdupq_n_u32( RAND_MULTIPLIER ); |
| const uint32x4_t rand_increment_u32x4 = vdupq_n_u32( RAND_INCREMENT ); |
| |
| VARDECL( NSQ_samples_struct, psSampleState ); |
| SAVE_STACK; |
| |
| silk_assert( nStatesDelayedDecision > 0 ); |
| silk_assert( ( shapingLPCOrder & 1 ) == 0 ); /* check that order is even */ |
| ALLOC( psSampleState, 2, NSQ_samples_struct ); |
| |
| 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 < ( MAX_SHAPE_LPC_ORDER - 7 ); i += 8 ) { |
| const int16x8_t t_s16x8 = vld1q_s16( AR_shp_Q13 + i ); |
| vst1q_s32( AR_shp_Q28 + i + 0, vshll_n_s16( vget_low_s16( t_s16x8 ), 15 ) ); |
| vst1q_s32( AR_shp_Q28 + i + 4, vshll_n_s16( vget_high_s16( t_s16x8 ), 15 ) ); |
| } |
| |
| for( ; i < MAX_SHAPE_LPC_ORDER; i++ ) { |
| AR_shp_Q28[i] = silk_LSHIFT32( AR_shp_Q13[i], 15 ); |
| } |
| |
| silk_short_prediction_create_arch_coef_neon_local( a_Q12_arch, a_Q12, predictLPCOrder ); |
| |
| for( i = 0; i < length; i++ ) { |
| int32x4_t Seed_s32x4, LPC_pred_Q14_s32x4; |
| int32x4_t sign_s32x4, tmp1_s32x4, tmp2_s32x4; |
| int32x4_t n_AR_Q14_s32x4, n_LF_Q14_s32x4; |
| int32x2_t AR_shp_Q28_s32x2; |
| int16x4_t r_Q10_s16x4, rr_Q10_s16x4; |
| |
| /* 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; |
| } |
| |
| /* Generate dither */ |
| Seed_s32x4 = vld1q_s32( psDelDec->Seed ); |
| Seed_s32x4 = vreinterpretq_s32_u32( vmlaq_u32( rand_increment_u32x4, vreinterpretq_u32_s32( Seed_s32x4 ), rand_multiplier_u32x4 ) ); |
| vst1q_s32( psDelDec->Seed, Seed_s32x4 ); |
| |
| /* Short-term prediction */ |
| LPC_pred_Q14_s32x4 = silk_noise_shape_quantizer_short_prediction_neon_local(psDelDec->sLPC_Q14[ NSQ_LPC_BUF_LENGTH - 16 + i ], a_Q12_arch, predictLPCOrder); |
| LPC_pred_Q14_s32x4 = vshlq_n_s32( LPC_pred_Q14_s32x4, 4 ); /* Q10 -> Q14 */ |
| |
| /* Noise shape feedback */ |
| /* Output of lowpass section */ |
| tmp2_s32x4 = silk_SMLAWB_lane0_neon( vld1q_s32( psDelDec->Diff_Q14 ), vld1q_s32( psDelDec->sAR2_Q14[ 0 ] ), warping_Q16_s32x2 ); |
| /* Output of allpass section */ |
| tmp1_s32x4 = vsubq_s32( vld1q_s32( psDelDec->sAR2_Q14[ 1 ] ), tmp2_s32x4 ); |
| tmp1_s32x4 = silk_SMLAWB_lane0_neon( vld1q_s32( psDelDec->sAR2_Q14[ 0 ] ), tmp1_s32x4, warping_Q16_s32x2 ); |
| vst1q_s32( psDelDec->sAR2_Q14[ 0 ], tmp2_s32x4 ); |
| AR_shp_Q28_s32x2 = vld1_s32( AR_shp_Q28 ); |
| n_AR_Q14_s32x4 = vaddq_s32( vdupq_n_s32( silk_RSHIFT( shapingLPCOrder, 1 ) ), vqdmulhq_lane_s32( tmp2_s32x4, AR_shp_Q28_s32x2, 0 ) ); |
| |
| /* Loop over allpass sections */ |
| for( j = 2; j < shapingLPCOrder; j += 2 ) { |
| /* Output of allpass section */ |
| tmp2_s32x4 = vsubq_s32( vld1q_s32( psDelDec->sAR2_Q14[ j + 0 ] ), tmp1_s32x4 ); |
| tmp2_s32x4 = silk_SMLAWB_lane0_neon( vld1q_s32( psDelDec->sAR2_Q14[ j - 1 ] ), tmp2_s32x4, warping_Q16_s32x2 ); |
| vst1q_s32( psDelDec->sAR2_Q14[ j - 1 ], tmp1_s32x4 ); |
| n_AR_Q14_s32x4 = vaddq_s32( n_AR_Q14_s32x4, vqdmulhq_lane_s32( tmp1_s32x4, AR_shp_Q28_s32x2, 1 ) ); |
| /* Output of allpass section */ |
| tmp1_s32x4 = vsubq_s32( vld1q_s32( psDelDec->sAR2_Q14[ j + 1 ] ), tmp2_s32x4 ); |
| tmp1_s32x4 = silk_SMLAWB_lane0_neon( vld1q_s32( psDelDec->sAR2_Q14[ j + 0 ] ), tmp1_s32x4, warping_Q16_s32x2 ); |
| vst1q_s32( psDelDec->sAR2_Q14[ j + 0 ], tmp2_s32x4 ); |
| AR_shp_Q28_s32x2 = vld1_s32( &AR_shp_Q28[ j ] ); |
| n_AR_Q14_s32x4 = vaddq_s32( n_AR_Q14_s32x4, vqdmulhq_lane_s32( tmp2_s32x4, AR_shp_Q28_s32x2, 0 ) ); |
| } |
| vst1q_s32( psDelDec->sAR2_Q14[ shapingLPCOrder - 1 ], tmp1_s32x4 ); |
| n_AR_Q14_s32x4 = vaddq_s32( n_AR_Q14_s32x4, vqdmulhq_lane_s32( tmp1_s32x4, AR_shp_Q28_s32x2, 1 ) ); |
| n_AR_Q14_s32x4 = vshlq_n_s32( n_AR_Q14_s32x4, 1 ); /* Q11 -> Q12 */ |
| n_AR_Q14_s32x4 = vaddq_s32( n_AR_Q14_s32x4, vqdmulhq_n_s32( vld1q_s32( psDelDec->LF_AR_Q14 ), silk_LSHIFT32( Tilt_Q14, 16 ) >> 1 ) ); /* Q12 */ |
| n_AR_Q14_s32x4 = vshlq_n_s32( n_AR_Q14_s32x4, 2 ); /* Q12 -> Q14 */ |
| n_LF_Q14_s32x4 = vqdmulhq_n_s32( vld1q_s32( psDelDec->Shape_Q14[ *smpl_buf_idx ] ), LF_shp_Q29 ); /* Q12 */ |
| n_LF_Q14_s32x4 = vaddq_s32( n_LF_Q14_s32x4, vqdmulhq_n_s32( vld1q_s32( psDelDec->LF_AR_Q14 ), silk_LSHIFT32( LF_shp_Q14 >> 16 , 15 ) ) ); /* Q12 */ |
| n_LF_Q14_s32x4 = vshlq_n_s32( n_LF_Q14_s32x4, 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_s32x4 = vaddq_s32( n_AR_Q14_s32x4, n_LF_Q14_s32x4 ); /* Q14 */ |
| tmp2_s32x4 = vaddq_s32( vdupq_n_s32( n_LTP_Q14 ), LPC_pred_Q14_s32x4 ); /* Q13 */ |
| tmp1_s32x4 = vsubq_s32( tmp2_s32x4, tmp1_s32x4 ); /* Q13 */ |
| tmp1_s32x4 = vrshrq_n_s32( tmp1_s32x4, 4 ); /* Q10 */ |
| tmp1_s32x4 = vsubq_s32( vdupq_n_s32( x_Q10[ i ] ), tmp1_s32x4 ); /* residual error Q10 */ |
| |
| /* Flip sign depending on dither */ |
| sign_s32x4 = vreinterpretq_s32_u32( vcltq_s32( Seed_s32x4, vdupq_n_s32( 0 ) ) ); |
| tmp1_s32x4 = veorq_s32( tmp1_s32x4, sign_s32x4 ); |
| tmp1_s32x4 = vsubq_s32( tmp1_s32x4, sign_s32x4 ); |
| tmp1_s32x4 = vmaxq_s32( tmp1_s32x4, vdupq_n_s32( -( 31 << 10 ) ) ); |
| tmp1_s32x4 = vminq_s32( tmp1_s32x4, vdupq_n_s32( 30 << 10 ) ); |
| r_Q10_s16x4 = vmovn_s32( tmp1_s32x4 ); |
| |
| /* Find two quantization level candidates and measure their rate-distortion */ |
| { |
| int16x4_t q1_Q10_s16x4 = vsub_s16( r_Q10_s16x4, vdup_n_s16( offset_Q10 ) ); |
| int16x4_t q1_Q0_s16x4 = vshr_n_s16( q1_Q10_s16x4, 10 ); |
| int16x4_t q2_Q10_s16x4; |
| int32x4_t rd1_Q10_s32x4, rd2_Q10_s32x4; |
| uint32x4_t t_u32x4; |
| |
| if( Lambda_Q10 > 2048 ) { |
| /* For aggressive RDO, the bias becomes more than one pulse. */ |
| const int rdo_offset = Lambda_Q10/2 - 512; |
| const uint16x4_t greaterThanRdo = vcgt_s16( q1_Q10_s16x4, vdup_n_s16( rdo_offset ) ); |
| const uint16x4_t lessThanMinusRdo = vclt_s16( q1_Q10_s16x4, vdup_n_s16( -rdo_offset ) ); |
| /* If Lambda_Q10 > 32767, then q1_Q0, q1_Q10 and q2_Q10 must change to 32-bit. */ |
| silk_assert( Lambda_Q10 <= 32767 ); |
| |
| q1_Q0_s16x4 = vreinterpret_s16_u16( vclt_s16( q1_Q10_s16x4, vdup_n_s16( 0 ) ) ); |
| q1_Q0_s16x4 = vbsl_s16( greaterThanRdo, vsub_s16( q1_Q10_s16x4, vdup_n_s16( rdo_offset ) ), q1_Q0_s16x4 ); |
| q1_Q0_s16x4 = vbsl_s16( lessThanMinusRdo, vadd_s16( q1_Q10_s16x4, vdup_n_s16( rdo_offset ) ), q1_Q0_s16x4 ); |
| q1_Q0_s16x4 = vshr_n_s16( q1_Q0_s16x4, 10 ); |
| } |
| { |
| const uint16x4_t equal0_u16x4 = vceq_s16( q1_Q0_s16x4, vdup_n_s16( 0 ) ); |
| const uint16x4_t equalMinus1_u16x4 = vceq_s16( q1_Q0_s16x4, vdup_n_s16( -1 ) ); |
| const uint16x4_t lessThanMinus1_u16x4 = vclt_s16( q1_Q0_s16x4, vdup_n_s16( -1 ) ); |
| int16x4_t tmp1_s16x4, tmp2_s16x4; |
| |
| q1_Q10_s16x4 = vshl_n_s16( q1_Q0_s16x4, 10 ); |
| tmp1_s16x4 = vadd_s16( q1_Q10_s16x4, vdup_n_s16( offset_Q10 - QUANT_LEVEL_ADJUST_Q10 ) ); |
| q1_Q10_s16x4 = vadd_s16( q1_Q10_s16x4, vdup_n_s16( offset_Q10 + QUANT_LEVEL_ADJUST_Q10 ) ); |
| q1_Q10_s16x4 = vbsl_s16( lessThanMinus1_u16x4, q1_Q10_s16x4, tmp1_s16x4 ); |
| q1_Q10_s16x4 = vbsl_s16( equal0_u16x4, vdup_n_s16( offset_Q10 ), q1_Q10_s16x4 ); |
| q1_Q10_s16x4 = vbsl_s16( equalMinus1_u16x4, vdup_n_s16( offset_Q10 - ( 1024 - QUANT_LEVEL_ADJUST_Q10 ) ), q1_Q10_s16x4 ); |
| q2_Q10_s16x4 = vadd_s16( q1_Q10_s16x4, vdup_n_s16( 1024 ) ); |
| q2_Q10_s16x4 = vbsl_s16( equal0_u16x4, vdup_n_s16( offset_Q10 + 1024 - QUANT_LEVEL_ADJUST_Q10 ), q2_Q10_s16x4 ); |
| q2_Q10_s16x4 = vbsl_s16( equalMinus1_u16x4, vdup_n_s16( offset_Q10 ), q2_Q10_s16x4 ); |
| tmp1_s16x4 = q1_Q10_s16x4; |
| tmp2_s16x4 = q2_Q10_s16x4; |
| tmp1_s16x4 = vbsl_s16( vorr_u16( equalMinus1_u16x4, lessThanMinus1_u16x4 ), vneg_s16( tmp1_s16x4 ), tmp1_s16x4 ); |
| tmp2_s16x4 = vbsl_s16( lessThanMinus1_u16x4, vneg_s16( tmp2_s16x4 ), tmp2_s16x4 ); |
| rd1_Q10_s32x4 = vmull_s16( tmp1_s16x4, vdup_n_s16( Lambda_Q10 ) ); |
| rd2_Q10_s32x4 = vmull_s16( tmp2_s16x4, vdup_n_s16( Lambda_Q10 ) ); |
| } |
| |
| rr_Q10_s16x4 = vsub_s16( r_Q10_s16x4, q1_Q10_s16x4 ); |
| rd1_Q10_s32x4 = vmlal_s16( rd1_Q10_s32x4, rr_Q10_s16x4, rr_Q10_s16x4 ); |
| rd1_Q10_s32x4 = vshrq_n_s32( rd1_Q10_s32x4, 10 ); |
| |
| rr_Q10_s16x4 = vsub_s16( r_Q10_s16x4, q2_Q10_s16x4 ); |
| rd2_Q10_s32x4 = vmlal_s16( rd2_Q10_s32x4, rr_Q10_s16x4, rr_Q10_s16x4 ); |
| rd2_Q10_s32x4 = vshrq_n_s32( rd2_Q10_s32x4, 10 ); |
| |
| tmp2_s32x4 = vld1q_s32( psDelDec->RD_Q10 ); |
| tmp1_s32x4 = vaddq_s32( tmp2_s32x4, vminq_s32( rd1_Q10_s32x4, rd2_Q10_s32x4 ) ); |
| tmp2_s32x4 = vaddq_s32( tmp2_s32x4, vmaxq_s32( rd1_Q10_s32x4, rd2_Q10_s32x4 ) ); |
| vst1q_s32( psSampleState[ 0 ].RD_Q10, tmp1_s32x4 ); |
| vst1q_s32( psSampleState[ 1 ].RD_Q10, tmp2_s32x4 ); |
| t_u32x4 = vcltq_s32( rd1_Q10_s32x4, rd2_Q10_s32x4 ); |
| tmp1_s32x4 = vbslq_s32( t_u32x4, vmovl_s16( q1_Q10_s16x4 ), vmovl_s16( q2_Q10_s16x4 ) ); |
| tmp2_s32x4 = vbslq_s32( t_u32x4, vmovl_s16( q2_Q10_s16x4 ), vmovl_s16( q1_Q10_s16x4 ) ); |
| vst1q_s32( psSampleState[ 0 ].Q_Q10, tmp1_s32x4 ); |
| vst1q_s32( psSampleState[ 1 ].Q_Q10, tmp2_s32x4 ); |
| } |
| |
| { |
| /* Update states for best quantization */ |
| int32x4_t exc_Q14_s32x4, LPC_exc_Q14_s32x4, xq_Q14_s32x4, sLF_AR_shp_Q14_s32x4; |
| |
| /* Quantized excitation */ |
| exc_Q14_s32x4 = vshlq_n_s32( tmp1_s32x4, 4 ); |
| exc_Q14_s32x4 = veorq_s32( exc_Q14_s32x4, sign_s32x4 ); |
| exc_Q14_s32x4 = vsubq_s32( exc_Q14_s32x4, sign_s32x4 ); |
| |
| /* Add predictions */ |
| LPC_exc_Q14_s32x4 = vaddq_s32( exc_Q14_s32x4, vdupq_n_s32( LTP_pred_Q14 ) ); |
| xq_Q14_s32x4 = vaddq_s32( LPC_exc_Q14_s32x4, LPC_pred_Q14_s32x4 ); |
| |
| /* Update states */ |
| tmp1_s32x4 = vsubq_s32( xq_Q14_s32x4, vshlq_n_s32( vdupq_n_s32( x_Q10[ i ] ), 4 ) ); |
| vst1q_s32( psSampleState[ 0 ].Diff_Q14, tmp1_s32x4 ); |
| sLF_AR_shp_Q14_s32x4 = vsubq_s32( tmp1_s32x4, n_AR_Q14_s32x4 ); |
| vst1q_s32( psSampleState[ 0 ].sLTP_shp_Q14, vsubq_s32( sLF_AR_shp_Q14_s32x4, n_LF_Q14_s32x4 ) ); |
| vst1q_s32( psSampleState[ 0 ].LF_AR_Q14, sLF_AR_shp_Q14_s32x4 ); |
| vst1q_s32( psSampleState[ 0 ].LPC_exc_Q14, LPC_exc_Q14_s32x4 ); |
| vst1q_s32( psSampleState[ 0 ].xq_Q14, xq_Q14_s32x4 ); |
| |
| /* Quantized excitation */ |
| exc_Q14_s32x4 = vshlq_n_s32( tmp2_s32x4, 4 ); |
| exc_Q14_s32x4 = veorq_s32( exc_Q14_s32x4, sign_s32x4 ); |
| exc_Q14_s32x4 = vsubq_s32( exc_Q14_s32x4, sign_s32x4 ); |
| |
| /* Add predictions */ |
| LPC_exc_Q14_s32x4 = vaddq_s32( exc_Q14_s32x4, vdupq_n_s32( LTP_pred_Q14 ) ); |
| xq_Q14_s32x4 = vaddq_s32( LPC_exc_Q14_s32x4, LPC_pred_Q14_s32x4 ); |
| |
| /* Update states */ |
| tmp1_s32x4 = vsubq_s32( xq_Q14_s32x4, vshlq_n_s32( vdupq_n_s32( x_Q10[ i ] ), 4 ) ); |
| vst1q_s32( psSampleState[ 1 ].Diff_Q14, tmp1_s32x4 ); |
| sLF_AR_shp_Q14_s32x4 = vsubq_s32( tmp1_s32x4, n_AR_Q14_s32x4 ); |
| vst1q_s32( psSampleState[ 1 ].sLTP_shp_Q14, vsubq_s32( sLF_AR_shp_Q14_s32x4, n_LF_Q14_s32x4 ) ); |
| vst1q_s32( psSampleState[ 1 ].LF_AR_Q14, sLF_AR_shp_Q14_s32x4 ); |
| vst1q_s32( psSampleState[ 1 ].LPC_exc_Q14, LPC_exc_Q14_s32x4 ); |
| vst1q_s32( psSampleState[ 1 ].xq_Q14, xq_Q14_s32x4 ); |
| } |
| |
| *smpl_buf_idx = *smpl_buf_idx ? ( *smpl_buf_idx - 1 ) : ( DECISION_DELAY - 1); |
| last_smple_idx = *smpl_buf_idx + decisionDelay + DECISION_DELAY; |
| if( last_smple_idx >= DECISION_DELAY ) last_smple_idx -= DECISION_DELAY; |
| if( last_smple_idx >= DECISION_DELAY ) last_smple_idx -= DECISION_DELAY; |
| |
| /* Find winner */ |
| RDmin_Q10 = psSampleState[ 0 ].RD_Q10[ 0 ]; |
| Winner_ind = 0; |
| for( k = 1; k < nStatesDelayedDecision; k++ ) { |
| if( psSampleState[ 0 ].RD_Q10[ k ] < RDmin_Q10 ) { |
| RDmin_Q10 = psSampleState[ 0 ].RD_Q10[ k ]; |
| Winner_ind = k; |
| } |
| } |
| |
| /* Increase RD values of expired states */ |
| { |
| uint32x4_t t_u32x4; |
| Winner_rand_state = psDelDec->RandState[ last_smple_idx ][ Winner_ind ]; |
| t_u32x4 = vceqq_s32( vld1q_s32( psDelDec->RandState[ last_smple_idx ] ), vdupq_n_s32( Winner_rand_state ) ); |
| t_u32x4 = vmvnq_u32( t_u32x4 ); |
| t_u32x4 = vshrq_n_u32( t_u32x4, 5 ); |
| tmp1_s32x4 = vld1q_s32( psSampleState[ 0 ].RD_Q10 ); |
| tmp2_s32x4 = vld1q_s32( psSampleState[ 1 ].RD_Q10 ); |
| tmp1_s32x4 = vaddq_s32( tmp1_s32x4, vreinterpretq_s32_u32( t_u32x4 ) ); |
| tmp2_s32x4 = vaddq_s32( tmp2_s32x4, vreinterpretq_s32_u32( t_u32x4 ) ); |
| vst1q_s32( psSampleState[ 0 ].RD_Q10, tmp1_s32x4 ); |
| vst1q_s32( psSampleState[ 1 ].RD_Q10, tmp2_s32x4 ); |
| |
| /* Find worst in first set and best in second set */ |
| RDmax_Q10 = psSampleState[ 0 ].RD_Q10[ 0 ]; |
| RDmin_Q10 = psSampleState[ 1 ].RD_Q10[ 0 ]; |
| RDmax_ind = 0; |
| RDmin_ind = 0; |
| for( k = 1; k < nStatesDelayedDecision; k++ ) { |
| /* find worst in first set */ |
| if( psSampleState[ 0 ].RD_Q10[ k ] > RDmax_Q10 ) { |
| RDmax_Q10 = psSampleState[ 0 ].RD_Q10[ k ]; |
| RDmax_ind = k; |
| } |
| /* find best in second set */ |
| if( psSampleState[ 1 ].RD_Q10[ k ] < RDmin_Q10 ) { |
| RDmin_Q10 = psSampleState[ 1 ].RD_Q10[ k ]; |
| RDmin_ind = k; |
| } |
| } |
| } |
| |
| /* Replace a state if best from second set outperforms worst in first set */ |
| if( RDmin_Q10 < RDmax_Q10 ) { |
| opus_int32 (*ptr)[NEON_MAX_DEL_DEC_STATES] = psDelDec->RandState; |
| const int numOthers = (int)( ( sizeof( NSQ_del_decs_struct ) - sizeof( ( (NSQ_del_decs_struct *)0 )->sLPC_Q14 ) ) |
| / ( NEON_MAX_DEL_DEC_STATES * sizeof( opus_int32 ) ) ); |
| /* Only ( predictLPCOrder - 1 ) of sLPC_Q14 buffer need to be updated, though the first several */ |
| /* useless sLPC_Q14[] will be different comparing with C when predictLPCOrder < NSQ_LPC_BUF_LENGTH. */ |
| /* Here just update constant ( NSQ_LPC_BUF_LENGTH - 1 ) for simplicity. */ |
| for( j = i + 1; j < i + NSQ_LPC_BUF_LENGTH; j++ ) { |
| psDelDec->sLPC_Q14[ j ][ RDmax_ind ] = psDelDec->sLPC_Q14[ j ][ RDmin_ind ]; |
| } |
| for( j = 0; j < numOthers; j++ ) { |
| ptr[ j ][ RDmax_ind ] = ptr[ j ][ RDmin_ind ]; |
| } |
| |
| psSampleState[ 0 ].Q_Q10[ RDmax_ind ] = psSampleState[ 1 ].Q_Q10[ RDmin_ind ]; |
| psSampleState[ 0 ].RD_Q10[ RDmax_ind ] = psSampleState[ 1 ].RD_Q10[ RDmin_ind ]; |
| psSampleState[ 0 ].xq_Q14[ RDmax_ind ] = psSampleState[ 1 ].xq_Q14[ RDmin_ind ]; |
| psSampleState[ 0 ].LF_AR_Q14[ RDmax_ind ] = psSampleState[ 1 ].LF_AR_Q14[ RDmin_ind ]; |
| psSampleState[ 0 ].Diff_Q14[ RDmax_ind ] = psSampleState[ 1 ].Diff_Q14[ RDmin_ind ]; |
| psSampleState[ 0 ].sLTP_shp_Q14[ RDmax_ind ] = psSampleState[ 1 ].sLTP_shp_Q14[ RDmin_ind ]; |
| psSampleState[ 0 ].LPC_exc_Q14[ RDmax_ind ] = psSampleState[ 1 ].LPC_exc_Q14[ RDmin_ind ]; |
| } |
| |
| /* Write samples from winner to output and long-term filter states */ |
| if( subfr > 0 || i >= decisionDelay ) { |
| pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDelDec->Q_Q10[ last_smple_idx ][ Winner_ind ], 10 ); |
| xq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( |
| silk_SMULWW( psDelDec->Xq_Q14[ last_smple_idx ][ Winner_ind ], delayedGain_Q10[ last_smple_idx ] ), 8 ) ); |
| NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - decisionDelay ] = psDelDec->Shape_Q14[ last_smple_idx ][ Winner_ind ]; |
| sLTP_Q15[ NSQ->sLTP_buf_idx - decisionDelay ] = psDelDec->Pred_Q15[ last_smple_idx ][ Winner_ind ]; |
| } |
| NSQ->sLTP_shp_buf_idx++; |
| NSQ->sLTP_buf_idx++; |
| |
| /* Update states */ |
| vst1q_s32( psDelDec->LF_AR_Q14, vld1q_s32( psSampleState[ 0 ].LF_AR_Q14 ) ); |
| vst1q_s32( psDelDec->Diff_Q14, vld1q_s32( psSampleState[ 0 ].Diff_Q14 ) ); |
| vst1q_s32( psDelDec->sLPC_Q14[ NSQ_LPC_BUF_LENGTH + i ], vld1q_s32( psSampleState[ 0 ].xq_Q14 ) ); |
| vst1q_s32( psDelDec->Xq_Q14[ *smpl_buf_idx ], vld1q_s32( psSampleState[ 0 ].xq_Q14 ) ); |
| tmp1_s32x4 = vld1q_s32( psSampleState[ 0 ].Q_Q10 ); |
| vst1q_s32( psDelDec->Q_Q10[ *smpl_buf_idx ], tmp1_s32x4 ); |
| vst1q_s32( psDelDec->Pred_Q15[ *smpl_buf_idx ], vshlq_n_s32( vld1q_s32( psSampleState[ 0 ].LPC_exc_Q14 ), 1 ) ); |
| vst1q_s32( psDelDec->Shape_Q14[ *smpl_buf_idx ], vld1q_s32( psSampleState[ 0 ].sLTP_shp_Q14 ) ); |
| tmp1_s32x4 = vrshrq_n_s32( tmp1_s32x4, 10 ); |
| tmp1_s32x4 = vaddq_s32( vld1q_s32( psDelDec->Seed ), tmp1_s32x4 ); |
| vst1q_s32( psDelDec->Seed, tmp1_s32x4 ); |
| vst1q_s32( psDelDec->RandState[ *smpl_buf_idx ], tmp1_s32x4 ); |
| vst1q_s32( psDelDec->RD_Q10, vld1q_s32( psSampleState[ 0 ].RD_Q10 ) ); |
| delayedGain_Q10[ *smpl_buf_idx ] = Gain_Q10; |
| } |
| /* Update LPC states */ |
| silk_memcpy( psDelDec->sLPC_Q14[ 0 ], psDelDec->sLPC_Q14[ length ], NEON_MAX_DEL_DEC_STATES * NSQ_LPC_BUF_LENGTH * sizeof( opus_int32 ) ); |
| |
| RESTORE_STACK; |
| } |
| |
| static OPUS_INLINE void silk_SMULWB_8_neon( |
| const opus_int16 *a, |
| const int32x2_t b, |
| opus_int32 *o |
| ) |
| { |
| const int16x8_t a_s16x8 = vld1q_s16( a ); |
| int32x4_t o0_s32x4, o1_s32x4; |
| |
| o0_s32x4 = vshll_n_s16( vget_low_s16( a_s16x8 ), 15 ); |
| o1_s32x4 = vshll_n_s16( vget_high_s16( a_s16x8 ), 15 ); |
| o0_s32x4 = vqdmulhq_lane_s32( o0_s32x4, b, 0 ); |
| o1_s32x4 = vqdmulhq_lane_s32( o1_s32x4, b, 0 ); |
| vst1q_s32( o, o0_s32x4 ); |
| vst1q_s32( o + 4, o1_s32x4 ); |
| } |
| |
| /* Only works when ( b >= -65536 ) && ( b < 65536 ). */ |
| static OPUS_INLINE void silk_SMULWW_small_b_4_neon( |
| opus_int32 *a, |
| const int32x2_t b_s32x2) |
| { |
| int32x4_t o_s32x4; |
| |
| o_s32x4 = vld1q_s32( a ); |
| o_s32x4 = vqdmulhq_lane_s32( o_s32x4, b_s32x2, 0 ); |
| vst1q_s32( a, o_s32x4 ); |
| } |
| |
| /* Only works when ( b >= -65536 ) && ( b < 65536 ). */ |
| static OPUS_INLINE void silk_SMULWW_small_b_8_neon( |
| opus_int32 *a, |
| const int32x2_t b_s32x2 |
| ) |
| { |
| int32x4_t o0_s32x4, o1_s32x4; |
| |
| o0_s32x4 = vld1q_s32( a ); |
| o1_s32x4 = vld1q_s32( a + 4 ); |
| o0_s32x4 = vqdmulhq_lane_s32( o0_s32x4, b_s32x2, 0 ); |
| o1_s32x4 = vqdmulhq_lane_s32( o1_s32x4, b_s32x2, 0 ); |
| vst1q_s32( a, o0_s32x4 ); |
| vst1q_s32( a + 4, o1_s32x4 ); |
| } |
| |
| static OPUS_INLINE void silk_SMULWW_4_neon( |
| opus_int32 *a, |
| const int32x2_t b_s32x2) |
| { |
| int32x4_t a_s32x4, o_s32x4; |
| |
| a_s32x4 = vld1q_s32( a ); |
| o_s32x4 = vqdmulhq_lane_s32( a_s32x4, b_s32x2, 0 ); |
| o_s32x4 = vmlaq_lane_s32( o_s32x4, a_s32x4, b_s32x2, 1 ); |
| vst1q_s32( a, o_s32x4 ); |
| } |
| |
| static OPUS_INLINE void silk_SMULWW_8_neon( |
| opus_int32 *a, |
| const int32x2_t b_s32x2 |
| ) |
| { |
| int32x4_t a0_s32x4, a1_s32x4, o0_s32x4, o1_s32x4; |
| |
| a0_s32x4 = vld1q_s32( a ); |
| a1_s32x4 = vld1q_s32( a + 4 ); |
| o0_s32x4 = vqdmulhq_lane_s32( a0_s32x4, b_s32x2, 0 ); |
| o1_s32x4 = vqdmulhq_lane_s32( a1_s32x4, b_s32x2, 0 ); |
| o0_s32x4 = vmlaq_lane_s32( o0_s32x4, a0_s32x4, b_s32x2, 1 ); |
| o1_s32x4 = vmlaq_lane_s32( o1_s32x4, a1_s32x4, b_s32x2, 1 ); |
| vst1q_s32( a, o0_s32x4 ); |
| vst1q_s32( a + 4, o1_s32x4 ); |
| } |
| |
| static OPUS_INLINE void silk_SMULWW_loop_neon( |
| const opus_int16 *a, |
| const opus_int32 b, |
| opus_int32 *o, |
| const opus_int loop_num |
| ) |
| { |
| opus_int i; |
| int32x2_t b_s32x2; |
| |
| b_s32x2 = vdup_n_s32( b ); |
| for( i = 0; i < loop_num - 7; i += 8 ) { |
| silk_SMULWB_8_neon( a + i, b_s32x2, o + i ); |
| } |
| for( ; i < loop_num; i++ ) { |
| o[ i ] = silk_SMULWW( a[ i ], b ); |
| } |
| } |
| |
| static OPUS_INLINE void silk_nsq_del_dec_scale_states_neon( |
| const silk_encoder_state *psEncC, /* I Encoder State */ |
| silk_nsq_state *NSQ, /* I/O NSQ state */ |
| NSQ_del_decs_struct psDelDec[], /* I/O Delayed decision states */ |
| const opus_int16 x16[], /* I Input */ |
| 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 */ |
| 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, lag; |
| opus_int32 gain_adj_Q16, inv_gain_Q31, inv_gain_Q26; |
| |
| lag = pitchL[ subfr ]; |
| inv_gain_Q31 = silk_INVERSE32_varQ( silk_max( Gains_Q16[ subfr ], 1 ), 47 ); |
| silk_assert( inv_gain_Q31 != 0 ); |
| |
| /* Scale input */ |
| inv_gain_Q26 = silk_RSHIFT_ROUND( inv_gain_Q31, 5 ); |
| silk_SMULWW_loop_neon( x16, inv_gain_Q26, x_sc_Q10, psEncC->subfr_length ); |
| |
| /* 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 ); |
| } |
| silk_SMULWW_loop_neon( sLTP + NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2, inv_gain_Q31, sLTP_Q15 + NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2, lag + LTP_ORDER / 2 ); |
| } |
| |
| /* Adjust for changing gain */ |
| if( Gains_Q16[ subfr ] != NSQ->prev_gain_Q16 ) { |
| int32x2_t gain_adj_Q16_s32x2; |
| gain_adj_Q16 = silk_DIV32_varQ( NSQ->prev_gain_Q16, Gains_Q16[ subfr ], 16 ); |
| |
| /* Scale long-term shaping state */ |
| if( ( gain_adj_Q16 >= -65536 ) && ( gain_adj_Q16 < 65536 ) ) { |
| gain_adj_Q16_s32x2 = vdup_n_s32( silk_LSHIFT32( gain_adj_Q16, 15 ) ); |
| for( i = NSQ->sLTP_shp_buf_idx - psEncC->ltp_mem_length; i < NSQ->sLTP_shp_buf_idx - 7; i += 8 ) { |
| silk_SMULWW_small_b_8_neon( NSQ->sLTP_shp_Q14 + i, gain_adj_Q16_s32x2 ); |
| } |
| for( ; 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 - 7; i += 8 ) { |
| silk_SMULWW_small_b_8_neon( sLTP_Q15 + i, gain_adj_Q16_s32x2 ); |
| } |
| for( ; i < NSQ->sLTP_buf_idx - decisionDelay; i++ ) { |
| sLTP_Q15[ i ] = silk_SMULWW( gain_adj_Q16, sLTP_Q15[ i ] ); |
| } |
| } |
| |
| /* Scale scalar states */ |
| silk_SMULWW_small_b_4_neon( psDelDec->LF_AR_Q14, gain_adj_Q16_s32x2 ); |
| silk_SMULWW_small_b_4_neon( psDelDec->Diff_Q14, gain_adj_Q16_s32x2 ); |
| |
| /* Scale short-term prediction and shaping states */ |
| for( i = 0; i < NSQ_LPC_BUF_LENGTH; i++ ) { |
| silk_SMULWW_small_b_4_neon( psDelDec->sLPC_Q14[ i ], gain_adj_Q16_s32x2 ); |
| } |
| |
| for( i = 0; i < MAX_SHAPE_LPC_ORDER; i++ ) { |
| silk_SMULWW_small_b_4_neon( psDelDec->sAR2_Q14[ i ], gain_adj_Q16_s32x2 ); |
| } |
| |
| for( i = 0; i < DECISION_DELAY; i++ ) { |
| silk_SMULWW_small_b_4_neon( psDelDec->Pred_Q15[ i ], gain_adj_Q16_s32x2 ); |
| silk_SMULWW_small_b_4_neon( psDelDec->Shape_Q14[ i ], gain_adj_Q16_s32x2 ); |
| } |
| } else { |
| gain_adj_Q16_s32x2 = vdup_n_s32( silk_LSHIFT32( gain_adj_Q16 & 0x0000FFFF, 15 ) ); |
| gain_adj_Q16_s32x2 = vset_lane_s32( gain_adj_Q16 >> 16, gain_adj_Q16_s32x2, 1 ); |
| for( i = NSQ->sLTP_shp_buf_idx - psEncC->ltp_mem_length; i < NSQ->sLTP_shp_buf_idx - 7; i += 8 ) { |
| silk_SMULWW_8_neon( NSQ->sLTP_shp_Q14 + i, gain_adj_Q16_s32x2 ); |
| } |
| for( ; 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 - 7; i += 8 ) { |
| silk_SMULWW_8_neon( sLTP_Q15 + i, gain_adj_Q16_s32x2 ); |
| } |
| for( ; i < NSQ->sLTP_buf_idx - decisionDelay; i++ ) { |
| sLTP_Q15[ i ] = silk_SMULWW( gain_adj_Q16, sLTP_Q15[ i ] ); |
| } |
| } |
| |
| /* Scale scalar states */ |
| silk_SMULWW_4_neon( psDelDec->LF_AR_Q14, gain_adj_Q16_s32x2 ); |
| silk_SMULWW_4_neon( psDelDec->Diff_Q14, gain_adj_Q16_s32x2 ); |
| |
| /* Scale short-term prediction and shaping states */ |
| for( i = 0; i < NSQ_LPC_BUF_LENGTH; i++ ) { |
| silk_SMULWW_4_neon( psDelDec->sLPC_Q14[ i ], gain_adj_Q16_s32x2 ); |
| } |
| |
| for( i = 0; i < MAX_SHAPE_LPC_ORDER; i++ ) { |
| silk_SMULWW_4_neon( psDelDec->sAR2_Q14[ i ], gain_adj_Q16_s32x2 ); |
| } |
| |
| for( i = 0; i < DECISION_DELAY; i++ ) { |
| silk_SMULWW_4_neon( psDelDec->Pred_Q15[ i ], gain_adj_Q16_s32x2 ); |
| silk_SMULWW_4_neon( psDelDec->Shape_Q14[ i ], gain_adj_Q16_s32x2 ); |
| } |
| } |
| |
| /* Save inverse gain */ |
| NSQ->prev_gain_Q16 = Gains_Q16[ subfr ]; |
| } |
| } |
