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https://repo.dactyloidae.xyz/Dactyloidae/UXP.git
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parent
b188579bb6
commit
a8b1099a1e
228 changed files with 10990 additions and 5670 deletions
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@ -43,6 +43,7 @@ typedef struct {
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opus_int32 Shape_Q14[ DECISION_DELAY ];
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opus_int32 sAR2_Q14[ MAX_SHAPE_LPC_ORDER ];
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opus_int32 LF_AR_Q14;
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opus_int32 Diff_Q14;
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opus_int32 Seed;
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opus_int32 SeedInit;
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opus_int32 RD_Q10;
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@ -53,6 +54,7 @@ typedef struct {
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opus_int32 RD_Q10;
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opus_int32 xq_Q14;
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opus_int32 LF_AR_Q14;
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opus_int32 Diff_Q14;
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opus_int32 sLTP_shp_Q14;
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opus_int32 LPC_exc_Q14;
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} NSQ_sample_struct;
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@ -66,7 +68,7 @@ static OPUS_INLINE void silk_nsq_del_dec_scale_states(
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const silk_encoder_state *psEncC, /* I Encoder State */
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silk_nsq_state *NSQ, /* I/O NSQ state */
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NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */
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const opus_int32 x_Q3[], /* I Input in Q3 */
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const opus_int16 x16[], /* I Input */
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opus_int32 x_sc_Q10[], /* O Input scaled with 1/Gain in Q10 */
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const opus_int16 sLTP[], /* I Re-whitened LTP state in Q0 */
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opus_int32 sLTP_Q15[], /* O LTP state matching scaled input */
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@ -107,27 +109,27 @@ static OPUS_INLINE void silk_noise_shape_quantizer_del_dec(
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opus_int predictLPCOrder, /* I Prediction filter order */
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opus_int warping_Q16, /* I */
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opus_int nStatesDelayedDecision, /* I Number of states in decision tree */
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opus_int *smpl_buf_idx, /* I Index to newest samples in buffers */
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opus_int *smpl_buf_idx, /* I/O Index to newest samples in buffers */
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opus_int decisionDelay, /* I */
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int arch /* I */
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);
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void silk_NSQ_del_dec_c(
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const silk_encoder_state *psEncC, /* I/O Encoder State */
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silk_nsq_state *NSQ, /* I/O NSQ state */
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SideInfoIndices *psIndices, /* I/O Quantization Indices */
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const opus_int32 x_Q3[], /* I Prefiltered input signal */
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opus_int8 pulses[], /* O Quantized pulse signal */
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const opus_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefs */
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const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ], /* I Long term prediction coefs */
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const opus_int16 AR2_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ], /* I Noise shaping coefs */
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const opus_int HarmShapeGain_Q14[ MAX_NB_SUBFR ], /* I Long term shaping coefs */
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const opus_int Tilt_Q14[ MAX_NB_SUBFR ], /* I Spectral tilt */
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const opus_int32 LF_shp_Q14[ MAX_NB_SUBFR ], /* I Low frequency shaping coefs */
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const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I Quantization step sizes */
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const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lags */
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const opus_int Lambda_Q10, /* I Rate/distortion tradeoff */
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const opus_int LTP_scale_Q14 /* I LTP state scaling */
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const silk_encoder_state *psEncC, /* I Encoder State */
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silk_nsq_state *NSQ, /* I/O NSQ state */
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SideInfoIndices *psIndices, /* I/O Quantization Indices */
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const opus_int16 x16[], /* I Input */
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opus_int8 pulses[], /* O Quantized pulse signal */
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const opus_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefs */
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const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ], /* I Long term prediction coefs */
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const opus_int16 AR_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ], /* I Noise shaping coefs */
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const opus_int HarmShapeGain_Q14[ MAX_NB_SUBFR ], /* I Long term shaping coefs */
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const opus_int Tilt_Q14[ MAX_NB_SUBFR ], /* I Spectral tilt */
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const opus_int32 LF_shp_Q14[ MAX_NB_SUBFR ], /* I Low frequency shaping coefs */
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const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I Quantization step sizes */
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const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lags */
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const opus_int Lambda_Q10, /* I Rate/distortion tradeoff */
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const opus_int LTP_scale_Q14 /* I LTP state scaling */
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)
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{
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opus_int i, k, lag, start_idx, LSF_interpolation_flag, Winner_ind, subfr;
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@ -159,6 +161,7 @@ void silk_NSQ_del_dec_c(
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psDD->SeedInit = psDD->Seed;
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psDD->RD_Q10 = 0;
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psDD->LF_AR_Q14 = NSQ->sLF_AR_shp_Q14;
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psDD->Diff_Q14 = NSQ->sDiff_shp_Q14;
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psDD->Shape_Q14[ 0 ] = NSQ->sLTP_shp_Q14[ psEncC->ltp_mem_length - 1 ];
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silk_memcpy( psDD->sLPC_Q14, NSQ->sLPC_Q14, NSQ_LPC_BUF_LENGTH * sizeof( opus_int32 ) );
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silk_memcpy( psDD->sAR2_Q14, NSQ->sAR2_Q14, sizeof( NSQ->sAR2_Q14 ) );
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@ -186,8 +189,7 @@ void silk_NSQ_del_dec_c(
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LSF_interpolation_flag = 1;
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}
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ALLOC( sLTP_Q15,
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psEncC->ltp_mem_length + psEncC->frame_length, opus_int32 );
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ALLOC( sLTP_Q15, psEncC->ltp_mem_length + psEncC->frame_length, opus_int32 );
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ALLOC( sLTP, psEncC->ltp_mem_length + psEncC->frame_length, opus_int16 );
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ALLOC( x_sc_Q10, psEncC->subfr_length, opus_int32 );
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ALLOC( delayedGain_Q10, DECISION_DELAY, opus_int32 );
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@ -199,7 +201,7 @@ void silk_NSQ_del_dec_c(
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for( k = 0; k < psEncC->nb_subfr; k++ ) {
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A_Q12 = &PredCoef_Q12[ ( ( k >> 1 ) | ( 1 - LSF_interpolation_flag ) ) * MAX_LPC_ORDER ];
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B_Q14 = <PCoef_Q14[ k * LTP_ORDER ];
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AR_shp_Q13 = &AR2_Q13[ k * MAX_SHAPE_LPC_ORDER ];
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AR_shp_Q13 = &AR_Q13[ k * MAX_SHAPE_LPC_ORDER ];
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/* Noise shape parameters */
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silk_assert( HarmShapeGain_Q14[ k ] >= 0 );
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@ -235,7 +237,8 @@ void silk_NSQ_del_dec_c(
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psDD = &psDelDec[ Winner_ind ];
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last_smple_idx = smpl_buf_idx + decisionDelay;
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for( i = 0; i < decisionDelay; i++ ) {
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last_smple_idx = ( last_smple_idx - 1 ) & DECISION_DELAY_MASK;
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last_smple_idx = ( last_smple_idx - 1 ) % DECISION_DELAY;
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if( last_smple_idx < 0 ) last_smple_idx += DECISION_DELAY;
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pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDD->Q_Q10[ last_smple_idx ], 10 );
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pxq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND(
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silk_SMULWW( psDD->Xq_Q14[ last_smple_idx ], Gains_Q16[ 1 ] ), 14 ) );
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@ -247,7 +250,7 @@ void silk_NSQ_del_dec_c(
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/* Rewhiten with new A coefs */
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start_idx = psEncC->ltp_mem_length - lag - psEncC->predictLPCOrder - LTP_ORDER / 2;
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silk_assert( start_idx > 0 );
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celt_assert( start_idx > 0 );
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silk_LPC_analysis_filter( &sLTP[ start_idx ], &NSQ->xq[ start_idx + k * psEncC->subfr_length ],
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A_Q12, psEncC->ltp_mem_length - start_idx, psEncC->predictLPCOrder, psEncC->arch );
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@ -257,7 +260,7 @@ void silk_NSQ_del_dec_c(
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}
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}
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silk_nsq_del_dec_scale_states( psEncC, NSQ, psDelDec, x_Q3, x_sc_Q10, sLTP, sLTP_Q15, k,
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silk_nsq_del_dec_scale_states( psEncC, NSQ, psDelDec, x16, x_sc_Q10, sLTP, sLTP_Q15, k,
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psEncC->nStatesDelayedDecision, LTP_scale_Q14, Gains_Q16, pitchL, psIndices->signalType, decisionDelay );
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silk_noise_shape_quantizer_del_dec( NSQ, psDelDec, psIndices->signalType, x_sc_Q10, pulses, pxq, sLTP_Q15,
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@ -265,7 +268,7 @@ void silk_NSQ_del_dec_c(
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Gains_Q16[ k ], Lambda_Q10, offset_Q10, psEncC->subfr_length, subfr++, psEncC->shapingLPCOrder,
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psEncC->predictLPCOrder, psEncC->warping_Q16, psEncC->nStatesDelayedDecision, &smpl_buf_idx, decisionDelay, psEncC->arch );
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x_Q3 += psEncC->subfr_length;
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x16 += psEncC->subfr_length;
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pulses += psEncC->subfr_length;
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pxq += psEncC->subfr_length;
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}
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@ -286,7 +289,9 @@ void silk_NSQ_del_dec_c(
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last_smple_idx = smpl_buf_idx + decisionDelay;
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Gain_Q10 = silk_RSHIFT32( Gains_Q16[ psEncC->nb_subfr - 1 ], 6 );
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for( i = 0; i < decisionDelay; i++ ) {
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last_smple_idx = ( last_smple_idx - 1 ) & DECISION_DELAY_MASK;
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last_smple_idx = ( last_smple_idx - 1 ) % DECISION_DELAY;
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if( last_smple_idx < 0 ) last_smple_idx += DECISION_DELAY;
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pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDD->Q_Q10[ last_smple_idx ], 10 );
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pxq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND(
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silk_SMULWW( psDD->Xq_Q14[ last_smple_idx ], Gain_Q10 ), 8 ) );
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@ -297,10 +302,10 @@ void silk_NSQ_del_dec_c(
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/* Update states */
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NSQ->sLF_AR_shp_Q14 = psDD->LF_AR_Q14;
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NSQ->sDiff_shp_Q14 = psDD->Diff_Q14;
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NSQ->lagPrev = pitchL[ psEncC->nb_subfr - 1 ];
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/* Save quantized speech signal */
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/* DEBUG_STORE_DATA( enc.pcm, &NSQ->xq[psEncC->ltp_mem_length], psEncC->frame_length * sizeof( opus_int16 ) ) */
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silk_memmove( NSQ->xq, &NSQ->xq[ psEncC->frame_length ], psEncC->ltp_mem_length * sizeof( opus_int16 ) );
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silk_memmove( NSQ->sLTP_shp_Q14, &NSQ->sLTP_shp_Q14[ psEncC->frame_length ], psEncC->ltp_mem_length * sizeof( opus_int32 ) );
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RESTORE_STACK;
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@ -335,7 +340,7 @@ static OPUS_INLINE void silk_noise_shape_quantizer_del_dec(
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opus_int predictLPCOrder, /* I Prediction filter order */
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opus_int warping_Q16, /* I */
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opus_int nStatesDelayedDecision, /* I Number of states in decision tree */
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opus_int *smpl_buf_idx, /* I Index to newest samples in buffers */
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opus_int *smpl_buf_idx, /* I/O Index to newest samples in buffers */
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opus_int decisionDelay, /* I */
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int arch /* I */
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)
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@ -356,7 +361,7 @@ static OPUS_INLINE void silk_noise_shape_quantizer_del_dec(
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NSQ_sample_struct *psSS;
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SAVE_STACK;
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silk_assert( nStatesDelayedDecision > 0 );
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celt_assert( nStatesDelayedDecision > 0 );
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ALLOC( psSampleState, nStatesDelayedDecision, NSQ_sample_pair );
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shp_lag_ptr = &NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - lag + HARM_SHAPE_FIR_TAPS / 2 ];
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@ -389,8 +394,8 @@ static OPUS_INLINE void silk_noise_shape_quantizer_del_dec(
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/* Long-term shaping */
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if( lag > 0 ) {
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/* Symmetric, packed FIR coefficients */
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n_LTP_Q14 = silk_SMULWB( silk_ADD32( shp_lag_ptr[ 0 ], shp_lag_ptr[ -2 ] ), HarmShapeFIRPacked_Q14 );
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n_LTP_Q14 = silk_SMLAWT( n_LTP_Q14, shp_lag_ptr[ -1 ], HarmShapeFIRPacked_Q14 );
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n_LTP_Q14 = silk_SMULWB( silk_ADD_SAT32( shp_lag_ptr[ 0 ], shp_lag_ptr[ -2 ] ), HarmShapeFIRPacked_Q14 );
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n_LTP_Q14 = silk_SMLAWT( n_LTP_Q14, shp_lag_ptr[ -1 ], HarmShapeFIRPacked_Q14 );
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n_LTP_Q14 = silk_SUB_LSHIFT32( LTP_pred_Q14, n_LTP_Q14, 2 ); /* Q12 -> Q14 */
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shp_lag_ptr++;
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} else {
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@ -414,9 +419,9 @@ static OPUS_INLINE void silk_noise_shape_quantizer_del_dec(
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LPC_pred_Q14 = silk_LSHIFT( LPC_pred_Q14, 4 ); /* Q10 -> Q14 */
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/* Noise shape feedback */
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silk_assert( ( shapingLPCOrder & 1 ) == 0 ); /* check that order is even */
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celt_assert( ( shapingLPCOrder & 1 ) == 0 ); /* check that order is even */
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/* Output of lowpass section */
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tmp2 = silk_SMLAWB( psLPC_Q14[ 0 ], psDD->sAR2_Q14[ 0 ], warping_Q16 );
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tmp2 = silk_SMLAWB( psDD->Diff_Q14, psDD->sAR2_Q14[ 0 ], warping_Q16 );
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/* Output of allpass section */
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tmp1 = silk_SMLAWB( psDD->sAR2_Q14[ 0 ], psDD->sAR2_Q14[ 1 ] - tmp2, warping_Q16 );
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psDD->sAR2_Q14[ 0 ] = tmp2;
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@ -446,9 +451,9 @@ static OPUS_INLINE void silk_noise_shape_quantizer_del_dec(
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/* Input minus prediction plus noise feedback */
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/* r = x[ i ] - LTP_pred - LPC_pred + n_AR + n_Tilt + n_LF + n_LTP */
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tmp1 = silk_ADD32( n_AR_Q14, n_LF_Q14 ); /* Q14 */
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tmp1 = silk_ADD_SAT32( n_AR_Q14, n_LF_Q14 ); /* Q14 */
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tmp2 = silk_ADD32( n_LTP_Q14, LPC_pred_Q14 ); /* Q13 */
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tmp1 = silk_SUB32( tmp2, tmp1 ); /* Q13 */
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tmp1 = silk_SUB_SAT32( tmp2, tmp1 ); /* Q13 */
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tmp1 = silk_RSHIFT_ROUND( tmp1, 4 ); /* Q10 */
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r_Q10 = silk_SUB32( x_Q10[ i ], tmp1 ); /* residual error Q10 */
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@ -462,6 +467,19 @@ static OPUS_INLINE void silk_noise_shape_quantizer_del_dec(
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/* Find two quantization level candidates and measure their rate-distortion */
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q1_Q10 = silk_SUB32( r_Q10, offset_Q10 );
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q1_Q0 = silk_RSHIFT( q1_Q10, 10 );
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if (Lambda_Q10 > 2048) {
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/* For aggressive RDO, the bias becomes more than one pulse. */
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int rdo_offset = Lambda_Q10/2 - 512;
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if (q1_Q10 > rdo_offset) {
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q1_Q0 = silk_RSHIFT( q1_Q10 - rdo_offset, 10 );
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} else if (q1_Q10 < -rdo_offset) {
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q1_Q0 = silk_RSHIFT( q1_Q10 + rdo_offset, 10 );
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} else if (q1_Q10 < 0) {
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q1_Q0 = -1;
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} else {
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q1_Q0 = 0;
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}
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}
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if( q1_Q0 > 0 ) {
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q1_Q10 = silk_SUB32( silk_LSHIFT( q1_Q0, 10 ), QUANT_LEVEL_ADJUST_Q10 );
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q1_Q10 = silk_ADD32( q1_Q10, offset_Q10 );
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@ -515,8 +533,9 @@ static OPUS_INLINE void silk_noise_shape_quantizer_del_dec(
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xq_Q14 = silk_ADD32( LPC_exc_Q14, LPC_pred_Q14 );
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/* Update states */
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sLF_AR_shp_Q14 = silk_SUB32( xq_Q14, n_AR_Q14 );
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psSS[ 0 ].sLTP_shp_Q14 = silk_SUB32( sLF_AR_shp_Q14, n_LF_Q14 );
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psSS[ 0 ].Diff_Q14 = silk_SUB_LSHIFT32( xq_Q14, x_Q10[ i ], 4 );
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sLF_AR_shp_Q14 = silk_SUB32( psSS[ 0 ].Diff_Q14, n_AR_Q14 );
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psSS[ 0 ].sLTP_shp_Q14 = silk_SUB_SAT32( sLF_AR_shp_Q14, n_LF_Q14 );
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psSS[ 0 ].LF_AR_Q14 = sLF_AR_shp_Q14;
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psSS[ 0 ].LPC_exc_Q14 = LPC_exc_Q14;
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psSS[ 0 ].xq_Q14 = xq_Q14;
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@ -529,21 +548,22 @@ static OPUS_INLINE void silk_noise_shape_quantizer_del_dec(
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exc_Q14 = -exc_Q14;
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}
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/* Add predictions */
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LPC_exc_Q14 = silk_ADD32( exc_Q14, LTP_pred_Q14 );
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xq_Q14 = silk_ADD32( LPC_exc_Q14, LPC_pred_Q14 );
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/* Update states */
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sLF_AR_shp_Q14 = silk_SUB32( xq_Q14, n_AR_Q14 );
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psSS[ 1 ].sLTP_shp_Q14 = silk_SUB32( sLF_AR_shp_Q14, n_LF_Q14 );
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psSS[ 1 ].Diff_Q14 = silk_SUB_LSHIFT32( xq_Q14, x_Q10[ i ], 4 );
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sLF_AR_shp_Q14 = silk_SUB32( psSS[ 1 ].Diff_Q14, n_AR_Q14 );
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psSS[ 1 ].sLTP_shp_Q14 = silk_SUB_SAT32( sLF_AR_shp_Q14, n_LF_Q14 );
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psSS[ 1 ].LF_AR_Q14 = sLF_AR_shp_Q14;
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psSS[ 1 ].LPC_exc_Q14 = LPC_exc_Q14;
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psSS[ 1 ].xq_Q14 = xq_Q14;
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}
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*smpl_buf_idx = ( *smpl_buf_idx - 1 ) & DECISION_DELAY_MASK; /* Index to newest samples */
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last_smple_idx = ( *smpl_buf_idx + decisionDelay ) & DECISION_DELAY_MASK; /* Index to decisionDelay old samples */
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*smpl_buf_idx = ( *smpl_buf_idx - 1 ) % DECISION_DELAY;
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if( *smpl_buf_idx < 0 ) *smpl_buf_idx += DECISION_DELAY;
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last_smple_idx = ( *smpl_buf_idx + decisionDelay ) % DECISION_DELAY;
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/* Find winner */
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RDmin_Q10 = psSampleState[ 0 ][ 0 ].RD_Q10;
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@ -607,6 +627,7 @@ static OPUS_INLINE void silk_noise_shape_quantizer_del_dec(
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psDD = &psDelDec[ k ];
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psSS = &psSampleState[ k ][ 0 ];
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psDD->LF_AR_Q14 = psSS->LF_AR_Q14;
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psDD->Diff_Q14 = psSS->Diff_Q14;
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psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH + i ] = psSS->xq_Q14;
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psDD->Xq_Q14[ *smpl_buf_idx ] = psSS->xq_Q14;
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psDD->Q_Q10[ *smpl_buf_idx ] = psSS->Q_Q10;
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@ -631,7 +652,7 @@ static OPUS_INLINE void silk_nsq_del_dec_scale_states(
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const silk_encoder_state *psEncC, /* I Encoder State */
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silk_nsq_state *NSQ, /* I/O NSQ state */
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NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */
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const opus_int32 x_Q3[], /* I Input in Q3 */
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const opus_int16 x16[], /* I Input */
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opus_int32 x_sc_Q10[], /* O Input scaled with 1/Gain in Q10 */
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const opus_int16 sLTP[], /* I Re-whitened LTP state in Q0 */
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opus_int32 sLTP_Q15[], /* O LTP state matching scaled input */
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@ -645,29 +666,19 @@ static OPUS_INLINE void silk_nsq_del_dec_scale_states(
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)
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{
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opus_int i, k, lag;
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opus_int32 gain_adj_Q16, inv_gain_Q31, inv_gain_Q23;
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opus_int32 gain_adj_Q16, inv_gain_Q31, inv_gain_Q26;
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NSQ_del_dec_struct *psDD;
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lag = pitchL[ subfr ];
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inv_gain_Q31 = silk_INVERSE32_varQ( silk_max( Gains_Q16[ subfr ], 1 ), 47 );
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silk_assert( inv_gain_Q31 != 0 );
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/* Calculate gain adjustment factor */
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if( Gains_Q16[ subfr ] != NSQ->prev_gain_Q16 ) {
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gain_adj_Q16 = silk_DIV32_varQ( NSQ->prev_gain_Q16, Gains_Q16[ subfr ], 16 );
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} else {
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gain_adj_Q16 = (opus_int32)1 << 16;
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}
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/* Scale input */
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inv_gain_Q23 = silk_RSHIFT_ROUND( inv_gain_Q31, 8 );
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inv_gain_Q26 = silk_RSHIFT_ROUND( inv_gain_Q31, 5 );
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for( i = 0; i < psEncC->subfr_length; i++ ) {
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x_sc_Q10[ i ] = silk_SMULWW( x_Q3[ i ], inv_gain_Q23 );
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x_sc_Q10[ i ] = silk_SMULWW( x16[ i ], inv_gain_Q26 );
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}
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/* Save inverse gain */
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NSQ->prev_gain_Q16 = Gains_Q16[ subfr ];
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/* After rewhitening the LTP state is un-scaled, so scale with inv_gain_Q16 */
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if( NSQ->rewhite_flag ) {
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if( subfr == 0 ) {
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@ -681,7 +692,9 @@ static OPUS_INLINE void silk_nsq_del_dec_scale_states(
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}
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/* Adjust for changing gain */
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if( gain_adj_Q16 != (opus_int32)1 << 16 ) {
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if( Gains_Q16[ subfr ] != NSQ->prev_gain_Q16 ) {
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gain_adj_Q16 = silk_DIV32_varQ( NSQ->prev_gain_Q16, Gains_Q16[ subfr ], 16 );
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/* Scale long-term shaping state */
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for( i = NSQ->sLTP_shp_buf_idx - psEncC->ltp_mem_length; i < NSQ->sLTP_shp_buf_idx; i++ ) {
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NSQ->sLTP_shp_Q14[ i ] = silk_SMULWW( gain_adj_Q16, NSQ->sLTP_shp_Q14[ i ] );
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|
@ -699,6 +712,7 @@ static OPUS_INLINE void silk_nsq_del_dec_scale_states(
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/* Scale scalar states */
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psDD->LF_AR_Q14 = silk_SMULWW( gain_adj_Q16, psDD->LF_AR_Q14 );
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psDD->Diff_Q14 = silk_SMULWW( gain_adj_Q16, psDD->Diff_Q14 );
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/* Scale short-term prediction and shaping states */
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for( i = 0; i < NSQ_LPC_BUF_LENGTH; i++ ) {
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|
@ -712,5 +726,8 @@ static OPUS_INLINE void silk_nsq_del_dec_scale_states(
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psDD->Shape_Q14[ i ] = silk_SMULWW( gain_adj_Q16, psDD->Shape_Q14[ i ] );
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||||
}
|
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}
|
||||
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/* Save inverse gain */
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||||
NSQ->prev_gain_Q16 = Gains_Q16[ subfr ];
|
||||
}
|
||||
}
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|
|
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Loading…
Add table
Add a link
Reference in a new issue