sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 1 | /*********************************************************************** |
| 2 | Copyright (c) 2006-2011, Skype Limited. All rights reserved. |
| 3 | Redistribution and use in source and binary forms, with or without |
| 4 | modification, are permitted provided that the following conditions |
| 5 | are met: |
| 6 | - Redistributions of source code must retain the above copyright notice, |
| 7 | this list of conditions and the following disclaimer. |
| 8 | - Redistributions in binary form must reproduce the above copyright |
| 9 | notice, this list of conditions and the following disclaimer in the |
| 10 | documentation and/or other materials provided with the distribution. |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 11 | - Neither the name of Internet Society, IETF or IETF Trust, nor the |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 12 | names of specific contributors, may be used to endorse or promote |
| 13 | products derived from this software without specific prior written |
| 14 | permission. |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 15 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 16 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
| 19 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 20 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 21 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 22 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 23 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 24 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 25 | POSSIBILITY OF SUCH DAMAGE. |
| 26 | ***********************************************************************/ |
| 27 | |
| 28 | #ifdef HAVE_CONFIG_H |
| 29 | #include "config.h" |
| 30 | #endif |
| 31 | |
| 32 | #include "main.h" |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 33 | #include "stack_alloc.h" |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 34 | |
| 35 | typedef struct { |
| 36 | opus_int32 sLPC_Q14[ MAX_SUB_FRAME_LENGTH + NSQ_LPC_BUF_LENGTH ]; |
| 37 | opus_int32 RandState[ DECISION_DELAY ]; |
| 38 | opus_int32 Q_Q10[ DECISION_DELAY ]; |
| 39 | opus_int32 Xq_Q14[ DECISION_DELAY ]; |
| 40 | opus_int32 Pred_Q15[ DECISION_DELAY ]; |
| 41 | opus_int32 Shape_Q14[ DECISION_DELAY ]; |
| 42 | opus_int32 sAR2_Q14[ MAX_SHAPE_LPC_ORDER ]; |
| 43 | opus_int32 LF_AR_Q14; |
| 44 | opus_int32 Seed; |
| 45 | opus_int32 SeedInit; |
| 46 | opus_int32 RD_Q10; |
| 47 | } NSQ_del_dec_struct; |
| 48 | |
| 49 | typedef struct { |
| 50 | opus_int32 Q_Q10; |
| 51 | opus_int32 RD_Q10; |
| 52 | opus_int32 xq_Q14; |
| 53 | opus_int32 LF_AR_Q14; |
| 54 | opus_int32 sLTP_shp_Q14; |
| 55 | opus_int32 LPC_exc_Q14; |
| 56 | } NSQ_sample_struct; |
| 57 | |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 58 | typedef NSQ_sample_struct NSQ_sample_pair[ 2 ]; |
| 59 | |
tlegrand@google.com | 3c3902f | 2013-12-09 08:35:25 +0000 | [diff] [blame^] | 60 | static OPUS_INLINE void silk_nsq_del_dec_scale_states( |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 61 | const silk_encoder_state *psEncC, /* I Encoder State */ |
| 62 | silk_nsq_state *NSQ, /* I/O NSQ state */ |
| 63 | NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */ |
| 64 | const opus_int32 x_Q3[], /* I Input in Q3 */ |
| 65 | opus_int32 x_sc_Q10[], /* O Input scaled with 1/Gain in Q10 */ |
| 66 | const opus_int16 sLTP[], /* I Re-whitened LTP state in Q0 */ |
| 67 | opus_int32 sLTP_Q15[], /* O LTP state matching scaled input */ |
| 68 | opus_int subfr, /* I Subframe number */ |
| 69 | opus_int nStatesDelayedDecision, /* I Number of del dec states */ |
| 70 | const opus_int LTP_scale_Q14, /* I LTP state scaling */ |
| 71 | const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I */ |
| 72 | const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag */ |
| 73 | const opus_int signal_type, /* I Signal type */ |
| 74 | const opus_int decisionDelay /* I Decision delay */ |
| 75 | ); |
| 76 | |
| 77 | /******************************************/ |
| 78 | /* Noise shape quantizer for one subframe */ |
| 79 | /******************************************/ |
tlegrand@google.com | 3c3902f | 2013-12-09 08:35:25 +0000 | [diff] [blame^] | 80 | static OPUS_INLINE void silk_noise_shape_quantizer_del_dec( |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 81 | silk_nsq_state *NSQ, /* I/O NSQ state */ |
| 82 | NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */ |
| 83 | opus_int signalType, /* I Signal type */ |
| 84 | const opus_int32 x_Q10[], /* I */ |
| 85 | opus_int8 pulses[], /* O */ |
| 86 | opus_int16 xq[], /* O */ |
| 87 | opus_int32 sLTP_Q15[], /* I/O LTP filter state */ |
| 88 | opus_int32 delayedGain_Q10[], /* I/O Gain delay buffer */ |
| 89 | const opus_int16 a_Q12[], /* I Short term prediction coefs */ |
| 90 | const opus_int16 b_Q14[], /* I Long term prediction coefs */ |
| 91 | const opus_int16 AR_shp_Q13[], /* I Noise shaping coefs */ |
| 92 | opus_int lag, /* I Pitch lag */ |
| 93 | opus_int32 HarmShapeFIRPacked_Q14, /* I */ |
| 94 | opus_int Tilt_Q14, /* I Spectral tilt */ |
| 95 | opus_int32 LF_shp_Q14, /* I */ |
| 96 | opus_int32 Gain_Q16, /* I */ |
| 97 | opus_int Lambda_Q10, /* I */ |
| 98 | opus_int offset_Q10, /* I */ |
| 99 | opus_int length, /* I Input length */ |
| 100 | opus_int subfr, /* I Subframe number */ |
| 101 | opus_int shapingLPCOrder, /* I Shaping LPC filter order */ |
| 102 | opus_int predictLPCOrder, /* I Prediction filter order */ |
| 103 | opus_int warping_Q16, /* I */ |
| 104 | opus_int nStatesDelayedDecision, /* I Number of states in decision tree */ |
| 105 | opus_int *smpl_buf_idx, /* I Index to newest samples in buffers */ |
| 106 | opus_int decisionDelay /* I */ |
| 107 | ); |
| 108 | |
| 109 | void silk_NSQ_del_dec( |
| 110 | const silk_encoder_state *psEncC, /* I/O Encoder State */ |
| 111 | silk_nsq_state *NSQ, /* I/O NSQ state */ |
| 112 | SideInfoIndices *psIndices, /* I/O Quantization Indices */ |
| 113 | const opus_int32 x_Q3[], /* I Prefiltered input signal */ |
| 114 | opus_int8 pulses[], /* O Quantized pulse signal */ |
| 115 | const opus_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefs */ |
| 116 | const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ], /* I Long term prediction coefs */ |
| 117 | const opus_int16 AR2_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ], /* I Noise shaping coefs */ |
| 118 | const opus_int HarmShapeGain_Q14[ MAX_NB_SUBFR ], /* I Long term shaping coefs */ |
| 119 | const opus_int Tilt_Q14[ MAX_NB_SUBFR ], /* I Spectral tilt */ |
| 120 | const opus_int32 LF_shp_Q14[ MAX_NB_SUBFR ], /* I Low frequency shaping coefs */ |
| 121 | const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I Quantization step sizes */ |
| 122 | const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lags */ |
| 123 | const opus_int Lambda_Q10, /* I Rate/distortion tradeoff */ |
| 124 | const opus_int LTP_scale_Q14 /* I LTP state scaling */ |
| 125 | ) |
| 126 | { |
| 127 | opus_int i, k, lag, start_idx, LSF_interpolation_flag, Winner_ind, subfr; |
| 128 | opus_int last_smple_idx, smpl_buf_idx, decisionDelay; |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 129 | const opus_int16 *A_Q12, *B_Q14, *AR_shp_Q13; |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 130 | opus_int16 *pxq; |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 131 | VARDECL( opus_int32, sLTP_Q15 ); |
| 132 | VARDECL( opus_int16, sLTP ); |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 133 | opus_int32 HarmShapeFIRPacked_Q14; |
| 134 | opus_int offset_Q10; |
| 135 | opus_int32 RDmin_Q10, Gain_Q10; |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 136 | VARDECL( opus_int32, x_sc_Q10 ); |
| 137 | VARDECL( opus_int32, delayedGain_Q10 ); |
| 138 | VARDECL( NSQ_del_dec_struct, psDelDec ); |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 139 | NSQ_del_dec_struct *psDD; |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 140 | SAVE_STACK; |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 141 | |
| 142 | /* Set unvoiced lag to the previous one, overwrite later for voiced */ |
| 143 | lag = NSQ->lagPrev; |
| 144 | |
| 145 | silk_assert( NSQ->prev_gain_Q16 != 0 ); |
| 146 | |
| 147 | /* Initialize delayed decision states */ |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 148 | ALLOC( psDelDec, psEncC->nStatesDelayedDecision, NSQ_del_dec_struct ); |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 149 | silk_memset( psDelDec, 0, psEncC->nStatesDelayedDecision * sizeof( NSQ_del_dec_struct ) ); |
| 150 | for( k = 0; k < psEncC->nStatesDelayedDecision; k++ ) { |
| 151 | psDD = &psDelDec[ k ]; |
| 152 | psDD->Seed = ( k + psIndices->Seed ) & 3; |
| 153 | psDD->SeedInit = psDD->Seed; |
| 154 | psDD->RD_Q10 = 0; |
| 155 | psDD->LF_AR_Q14 = NSQ->sLF_AR_shp_Q14; |
| 156 | psDD->Shape_Q14[ 0 ] = NSQ->sLTP_shp_Q14[ psEncC->ltp_mem_length - 1 ]; |
| 157 | silk_memcpy( psDD->sLPC_Q14, NSQ->sLPC_Q14, NSQ_LPC_BUF_LENGTH * sizeof( opus_int32 ) ); |
| 158 | silk_memcpy( psDD->sAR2_Q14, NSQ->sAR2_Q14, sizeof( NSQ->sAR2_Q14 ) ); |
| 159 | } |
| 160 | |
| 161 | offset_Q10 = silk_Quantization_Offsets_Q10[ psIndices->signalType >> 1 ][ psIndices->quantOffsetType ]; |
| 162 | smpl_buf_idx = 0; /* index of oldest samples */ |
| 163 | |
| 164 | decisionDelay = silk_min_int( DECISION_DELAY, psEncC->subfr_length ); |
| 165 | |
| 166 | /* For voiced frames limit the decision delay to lower than the pitch lag */ |
| 167 | if( psIndices->signalType == TYPE_VOICED ) { |
| 168 | for( k = 0; k < psEncC->nb_subfr; k++ ) { |
| 169 | decisionDelay = silk_min_int( decisionDelay, pitchL[ k ] - LTP_ORDER / 2 - 1 ); |
| 170 | } |
| 171 | } else { |
| 172 | if( lag > 0 ) { |
| 173 | decisionDelay = silk_min_int( decisionDelay, lag - LTP_ORDER / 2 - 1 ); |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | if( psIndices->NLSFInterpCoef_Q2 == 4 ) { |
| 178 | LSF_interpolation_flag = 0; |
| 179 | } else { |
| 180 | LSF_interpolation_flag = 1; |
| 181 | } |
| 182 | |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 183 | ALLOC( sLTP_Q15, |
| 184 | psEncC->ltp_mem_length + psEncC->frame_length, opus_int32 ); |
| 185 | ALLOC( sLTP, psEncC->ltp_mem_length + psEncC->frame_length, opus_int16 ); |
| 186 | ALLOC( x_sc_Q10, psEncC->subfr_length, opus_int32 ); |
| 187 | ALLOC( delayedGain_Q10, DECISION_DELAY, opus_int32 ); |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 188 | /* Set up pointers to start of sub frame */ |
| 189 | pxq = &NSQ->xq[ psEncC->ltp_mem_length ]; |
| 190 | NSQ->sLTP_shp_buf_idx = psEncC->ltp_mem_length; |
| 191 | NSQ->sLTP_buf_idx = psEncC->ltp_mem_length; |
| 192 | subfr = 0; |
| 193 | for( k = 0; k < psEncC->nb_subfr; k++ ) { |
| 194 | A_Q12 = &PredCoef_Q12[ ( ( k >> 1 ) | ( 1 - LSF_interpolation_flag ) ) * MAX_LPC_ORDER ]; |
| 195 | B_Q14 = <PCoef_Q14[ k * LTP_ORDER ]; |
| 196 | AR_shp_Q13 = &AR2_Q13[ k * MAX_SHAPE_LPC_ORDER ]; |
| 197 | |
| 198 | /* Noise shape parameters */ |
| 199 | silk_assert( HarmShapeGain_Q14[ k ] >= 0 ); |
| 200 | HarmShapeFIRPacked_Q14 = silk_RSHIFT( HarmShapeGain_Q14[ k ], 2 ); |
| 201 | HarmShapeFIRPacked_Q14 |= silk_LSHIFT( (opus_int32)silk_RSHIFT( HarmShapeGain_Q14[ k ], 1 ), 16 ); |
| 202 | |
| 203 | NSQ->rewhite_flag = 0; |
| 204 | if( psIndices->signalType == TYPE_VOICED ) { |
| 205 | /* Voiced */ |
| 206 | lag = pitchL[ k ]; |
| 207 | |
| 208 | /* Re-whitening */ |
| 209 | if( ( k & ( 3 - silk_LSHIFT( LSF_interpolation_flag, 1 ) ) ) == 0 ) { |
| 210 | if( k == 2 ) { |
| 211 | /* RESET DELAYED DECISIONS */ |
| 212 | /* Find winner */ |
| 213 | RDmin_Q10 = psDelDec[ 0 ].RD_Q10; |
| 214 | Winner_ind = 0; |
| 215 | for( i = 1; i < psEncC->nStatesDelayedDecision; i++ ) { |
| 216 | if( psDelDec[ i ].RD_Q10 < RDmin_Q10 ) { |
| 217 | RDmin_Q10 = psDelDec[ i ].RD_Q10; |
| 218 | Winner_ind = i; |
| 219 | } |
| 220 | } |
| 221 | for( i = 0; i < psEncC->nStatesDelayedDecision; i++ ) { |
| 222 | if( i != Winner_ind ) { |
| 223 | psDelDec[ i ].RD_Q10 += ( silk_int32_MAX >> 4 ); |
| 224 | silk_assert( psDelDec[ i ].RD_Q10 >= 0 ); |
| 225 | } |
| 226 | } |
| 227 | |
| 228 | /* Copy final part of signals from winner state to output and long-term filter states */ |
| 229 | psDD = &psDelDec[ Winner_ind ]; |
| 230 | last_smple_idx = smpl_buf_idx + decisionDelay; |
| 231 | for( i = 0; i < decisionDelay; i++ ) { |
| 232 | last_smple_idx = ( last_smple_idx - 1 ) & DECISION_DELAY_MASK; |
| 233 | pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDD->Q_Q10[ last_smple_idx ], 10 ); |
| 234 | pxq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( |
| 235 | silk_SMULWW( psDD->Xq_Q14[ last_smple_idx ], Gains_Q16[ 1 ] ), 14 ) ); |
| 236 | NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - decisionDelay + i ] = psDD->Shape_Q14[ last_smple_idx ]; |
| 237 | } |
| 238 | |
| 239 | subfr = 0; |
| 240 | } |
| 241 | |
| 242 | /* Rewhiten with new A coefs */ |
| 243 | start_idx = psEncC->ltp_mem_length - lag - psEncC->predictLPCOrder - LTP_ORDER / 2; |
| 244 | silk_assert( start_idx > 0 ); |
| 245 | |
| 246 | silk_LPC_analysis_filter( &sLTP[ start_idx ], &NSQ->xq[ start_idx + k * psEncC->subfr_length ], |
| 247 | A_Q12, psEncC->ltp_mem_length - start_idx, psEncC->predictLPCOrder ); |
| 248 | |
| 249 | NSQ->sLTP_buf_idx = psEncC->ltp_mem_length; |
| 250 | NSQ->rewhite_flag = 1; |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | silk_nsq_del_dec_scale_states( psEncC, NSQ, psDelDec, x_Q3, x_sc_Q10, sLTP, sLTP_Q15, k, |
| 255 | psEncC->nStatesDelayedDecision, LTP_scale_Q14, Gains_Q16, pitchL, psIndices->signalType, decisionDelay ); |
| 256 | |
| 257 | silk_noise_shape_quantizer_del_dec( NSQ, psDelDec, psIndices->signalType, x_sc_Q10, pulses, pxq, sLTP_Q15, |
| 258 | delayedGain_Q10, A_Q12, B_Q14, AR_shp_Q13, lag, HarmShapeFIRPacked_Q14, Tilt_Q14[ k ], LF_shp_Q14[ k ], |
| 259 | Gains_Q16[ k ], Lambda_Q10, offset_Q10, psEncC->subfr_length, subfr++, psEncC->shapingLPCOrder, |
| 260 | psEncC->predictLPCOrder, psEncC->warping_Q16, psEncC->nStatesDelayedDecision, &smpl_buf_idx, decisionDelay ); |
| 261 | |
| 262 | x_Q3 += psEncC->subfr_length; |
| 263 | pulses += psEncC->subfr_length; |
| 264 | pxq += psEncC->subfr_length; |
| 265 | } |
| 266 | |
| 267 | /* Find winner */ |
| 268 | RDmin_Q10 = psDelDec[ 0 ].RD_Q10; |
| 269 | Winner_ind = 0; |
| 270 | for( k = 1; k < psEncC->nStatesDelayedDecision; k++ ) { |
| 271 | if( psDelDec[ k ].RD_Q10 < RDmin_Q10 ) { |
| 272 | RDmin_Q10 = psDelDec[ k ].RD_Q10; |
| 273 | Winner_ind = k; |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | /* Copy final part of signals from winner state to output and long-term filter states */ |
| 278 | psDD = &psDelDec[ Winner_ind ]; |
| 279 | psIndices->Seed = psDD->SeedInit; |
| 280 | last_smple_idx = smpl_buf_idx + decisionDelay; |
| 281 | Gain_Q10 = silk_RSHIFT32( Gains_Q16[ psEncC->nb_subfr - 1 ], 6 ); |
| 282 | for( i = 0; i < decisionDelay; i++ ) { |
| 283 | last_smple_idx = ( last_smple_idx - 1 ) & DECISION_DELAY_MASK; |
| 284 | pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDD->Q_Q10[ last_smple_idx ], 10 ); |
| 285 | pxq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( |
| 286 | silk_SMULWW( psDD->Xq_Q14[ last_smple_idx ], Gain_Q10 ), 8 ) ); |
| 287 | NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - decisionDelay + i ] = psDD->Shape_Q14[ last_smple_idx ]; |
| 288 | } |
| 289 | silk_memcpy( NSQ->sLPC_Q14, &psDD->sLPC_Q14[ psEncC->subfr_length ], NSQ_LPC_BUF_LENGTH * sizeof( opus_int32 ) ); |
| 290 | silk_memcpy( NSQ->sAR2_Q14, psDD->sAR2_Q14, sizeof( psDD->sAR2_Q14 ) ); |
| 291 | |
| 292 | /* Update states */ |
| 293 | NSQ->sLF_AR_shp_Q14 = psDD->LF_AR_Q14; |
| 294 | NSQ->lagPrev = pitchL[ psEncC->nb_subfr - 1 ]; |
| 295 | |
| 296 | /* Save quantized speech signal */ |
| 297 | /* DEBUG_STORE_DATA( enc.pcm, &NSQ->xq[psEncC->ltp_mem_length], psEncC->frame_length * sizeof( opus_int16 ) ) */ |
| 298 | silk_memmove( NSQ->xq, &NSQ->xq[ psEncC->frame_length ], psEncC->ltp_mem_length * sizeof( opus_int16 ) ); |
| 299 | silk_memmove( NSQ->sLTP_shp_Q14, &NSQ->sLTP_shp_Q14[ psEncC->frame_length ], psEncC->ltp_mem_length * sizeof( opus_int32 ) ); |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 300 | RESTORE_STACK; |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 301 | } |
| 302 | |
| 303 | /******************************************/ |
| 304 | /* Noise shape quantizer for one subframe */ |
| 305 | /******************************************/ |
tlegrand@google.com | 3c3902f | 2013-12-09 08:35:25 +0000 | [diff] [blame^] | 306 | static OPUS_INLINE void silk_noise_shape_quantizer_del_dec( |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 307 | silk_nsq_state *NSQ, /* I/O NSQ state */ |
| 308 | NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */ |
| 309 | opus_int signalType, /* I Signal type */ |
| 310 | const opus_int32 x_Q10[], /* I */ |
| 311 | opus_int8 pulses[], /* O */ |
| 312 | opus_int16 xq[], /* O */ |
| 313 | opus_int32 sLTP_Q15[], /* I/O LTP filter state */ |
| 314 | opus_int32 delayedGain_Q10[], /* I/O Gain delay buffer */ |
| 315 | const opus_int16 a_Q12[], /* I Short term prediction coefs */ |
| 316 | const opus_int16 b_Q14[], /* I Long term prediction coefs */ |
| 317 | const opus_int16 AR_shp_Q13[], /* I Noise shaping coefs */ |
| 318 | opus_int lag, /* I Pitch lag */ |
| 319 | opus_int32 HarmShapeFIRPacked_Q14, /* I */ |
| 320 | opus_int Tilt_Q14, /* I Spectral tilt */ |
| 321 | opus_int32 LF_shp_Q14, /* I */ |
| 322 | opus_int32 Gain_Q16, /* I */ |
| 323 | opus_int Lambda_Q10, /* I */ |
| 324 | opus_int offset_Q10, /* I */ |
| 325 | opus_int length, /* I Input length */ |
| 326 | opus_int subfr, /* I Subframe number */ |
| 327 | opus_int shapingLPCOrder, /* I Shaping LPC filter order */ |
| 328 | opus_int predictLPCOrder, /* I Prediction filter order */ |
| 329 | opus_int warping_Q16, /* I */ |
| 330 | opus_int nStatesDelayedDecision, /* I Number of states in decision tree */ |
| 331 | opus_int *smpl_buf_idx, /* I Index to newest samples in buffers */ |
| 332 | opus_int decisionDelay /* I */ |
| 333 | ) |
| 334 | { |
| 335 | opus_int i, j, k, Winner_ind, RDmin_ind, RDmax_ind, last_smple_idx; |
| 336 | opus_int32 Winner_rand_state; |
| 337 | opus_int32 LTP_pred_Q14, LPC_pred_Q14, n_AR_Q14, n_LTP_Q14; |
| 338 | opus_int32 n_LF_Q14, r_Q10, rr_Q10, rd1_Q10, rd2_Q10, RDmin_Q10, RDmax_Q10; |
| 339 | opus_int32 q1_Q0, q1_Q10, q2_Q10, exc_Q14, LPC_exc_Q14, xq_Q14, Gain_Q10; |
| 340 | opus_int32 tmp1, tmp2, sLF_AR_shp_Q14; |
| 341 | opus_int32 *pred_lag_ptr, *shp_lag_ptr, *psLPC_Q14; |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 342 | VARDECL( NSQ_sample_pair, psSampleState ); |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 343 | NSQ_del_dec_struct *psDD; |
| 344 | NSQ_sample_struct *psSS; |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 345 | SAVE_STACK; |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 346 | |
| 347 | silk_assert( nStatesDelayedDecision > 0 ); |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 348 | ALLOC( psSampleState, nStatesDelayedDecision, NSQ_sample_pair ); |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 349 | |
| 350 | shp_lag_ptr = &NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - lag + HARM_SHAPE_FIR_TAPS / 2 ]; |
| 351 | pred_lag_ptr = &sLTP_Q15[ NSQ->sLTP_buf_idx - lag + LTP_ORDER / 2 ]; |
| 352 | Gain_Q10 = silk_RSHIFT( Gain_Q16, 6 ); |
| 353 | |
| 354 | for( i = 0; i < length; i++ ) { |
| 355 | /* Perform common calculations used in all states */ |
| 356 | |
| 357 | /* Long-term prediction */ |
| 358 | if( signalType == TYPE_VOICED ) { |
| 359 | /* Unrolled loop */ |
| 360 | /* Avoids introducing a bias because silk_SMLAWB() always rounds to -inf */ |
| 361 | LTP_pred_Q14 = 2; |
| 362 | LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ 0 ], b_Q14[ 0 ] ); |
| 363 | LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -1 ], b_Q14[ 1 ] ); |
| 364 | LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -2 ], b_Q14[ 2 ] ); |
| 365 | LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -3 ], b_Q14[ 3 ] ); |
| 366 | LTP_pred_Q14 = silk_SMLAWB( LTP_pred_Q14, pred_lag_ptr[ -4 ], b_Q14[ 4 ] ); |
| 367 | LTP_pred_Q14 = silk_LSHIFT( LTP_pred_Q14, 1 ); /* Q13 -> Q14 */ |
| 368 | pred_lag_ptr++; |
| 369 | } else { |
| 370 | LTP_pred_Q14 = 0; |
| 371 | } |
| 372 | |
| 373 | /* Long-term shaping */ |
| 374 | if( lag > 0 ) { |
| 375 | /* Symmetric, packed FIR coefficients */ |
| 376 | n_LTP_Q14 = silk_SMULWB( silk_ADD32( shp_lag_ptr[ 0 ], shp_lag_ptr[ -2 ] ), HarmShapeFIRPacked_Q14 ); |
| 377 | n_LTP_Q14 = silk_SMLAWT( n_LTP_Q14, shp_lag_ptr[ -1 ], HarmShapeFIRPacked_Q14 ); |
| 378 | n_LTP_Q14 = silk_SUB_LSHIFT32( LTP_pred_Q14, n_LTP_Q14, 2 ); /* Q12 -> Q14 */ |
| 379 | shp_lag_ptr++; |
| 380 | } else { |
| 381 | n_LTP_Q14 = 0; |
| 382 | } |
| 383 | |
| 384 | for( k = 0; k < nStatesDelayedDecision; k++ ) { |
| 385 | /* Delayed decision state */ |
| 386 | psDD = &psDelDec[ k ]; |
| 387 | |
| 388 | /* Sample state */ |
| 389 | psSS = psSampleState[ k ]; |
| 390 | |
| 391 | /* Generate dither */ |
| 392 | psDD->Seed = silk_RAND( psDD->Seed ); |
| 393 | |
| 394 | /* Pointer used in short term prediction and shaping */ |
| 395 | psLPC_Q14 = &psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH - 1 + i ]; |
| 396 | /* Short-term prediction */ |
| 397 | silk_assert( predictLPCOrder == 10 || predictLPCOrder == 16 ); |
| 398 | /* Avoids introducing a bias because silk_SMLAWB() always rounds to -inf */ |
| 399 | LPC_pred_Q14 = silk_RSHIFT( predictLPCOrder, 1 ); |
| 400 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ 0 ], a_Q12[ 0 ] ); |
| 401 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -1 ], a_Q12[ 1 ] ); |
| 402 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -2 ], a_Q12[ 2 ] ); |
| 403 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -3 ], a_Q12[ 3 ] ); |
| 404 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -4 ], a_Q12[ 4 ] ); |
| 405 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -5 ], a_Q12[ 5 ] ); |
| 406 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -6 ], a_Q12[ 6 ] ); |
| 407 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -7 ], a_Q12[ 7 ] ); |
| 408 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -8 ], a_Q12[ 8 ] ); |
| 409 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -9 ], a_Q12[ 9 ] ); |
| 410 | if( predictLPCOrder == 16 ) { |
| 411 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -10 ], a_Q12[ 10 ] ); |
| 412 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -11 ], a_Q12[ 11 ] ); |
| 413 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -12 ], a_Q12[ 12 ] ); |
| 414 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -13 ], a_Q12[ 13 ] ); |
| 415 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -14 ], a_Q12[ 14 ] ); |
| 416 | LPC_pred_Q14 = silk_SMLAWB( LPC_pred_Q14, psLPC_Q14[ -15 ], a_Q12[ 15 ] ); |
| 417 | } |
| 418 | LPC_pred_Q14 = silk_LSHIFT( LPC_pred_Q14, 4 ); /* Q10 -> Q14 */ |
| 419 | |
| 420 | /* Noise shape feedback */ |
| 421 | silk_assert( ( shapingLPCOrder & 1 ) == 0 ); /* check that order is even */ |
| 422 | /* Output of lowpass section */ |
| 423 | tmp2 = silk_SMLAWB( psLPC_Q14[ 0 ], psDD->sAR2_Q14[ 0 ], warping_Q16 ); |
| 424 | /* Output of allpass section */ |
| 425 | tmp1 = silk_SMLAWB( psDD->sAR2_Q14[ 0 ], psDD->sAR2_Q14[ 1 ] - tmp2, warping_Q16 ); |
| 426 | psDD->sAR2_Q14[ 0 ] = tmp2; |
| 427 | n_AR_Q14 = silk_RSHIFT( shapingLPCOrder, 1 ); |
| 428 | n_AR_Q14 = silk_SMLAWB( n_AR_Q14, tmp2, AR_shp_Q13[ 0 ] ); |
| 429 | /* Loop over allpass sections */ |
| 430 | for( j = 2; j < shapingLPCOrder; j += 2 ) { |
| 431 | /* Output of allpass section */ |
| 432 | tmp2 = silk_SMLAWB( psDD->sAR2_Q14[ j - 1 ], psDD->sAR2_Q14[ j + 0 ] - tmp1, warping_Q16 ); |
| 433 | psDD->sAR2_Q14[ j - 1 ] = tmp1; |
| 434 | n_AR_Q14 = silk_SMLAWB( n_AR_Q14, tmp1, AR_shp_Q13[ j - 1 ] ); |
| 435 | /* Output of allpass section */ |
| 436 | tmp1 = silk_SMLAWB( psDD->sAR2_Q14[ j + 0 ], psDD->sAR2_Q14[ j + 1 ] - tmp2, warping_Q16 ); |
| 437 | psDD->sAR2_Q14[ j + 0 ] = tmp2; |
| 438 | n_AR_Q14 = silk_SMLAWB( n_AR_Q14, tmp2, AR_shp_Q13[ j ] ); |
| 439 | } |
| 440 | psDD->sAR2_Q14[ shapingLPCOrder - 1 ] = tmp1; |
| 441 | n_AR_Q14 = silk_SMLAWB( n_AR_Q14, tmp1, AR_shp_Q13[ shapingLPCOrder - 1 ] ); |
| 442 | |
| 443 | n_AR_Q14 = silk_LSHIFT( n_AR_Q14, 1 ); /* Q11 -> Q12 */ |
| 444 | n_AR_Q14 = silk_SMLAWB( n_AR_Q14, psDD->LF_AR_Q14, Tilt_Q14 ); /* Q12 */ |
| 445 | n_AR_Q14 = silk_LSHIFT( n_AR_Q14, 2 ); /* Q12 -> Q14 */ |
| 446 | |
| 447 | n_LF_Q14 = silk_SMULWB( psDD->Shape_Q14[ *smpl_buf_idx ], LF_shp_Q14 ); /* Q12 */ |
| 448 | n_LF_Q14 = silk_SMLAWT( n_LF_Q14, psDD->LF_AR_Q14, LF_shp_Q14 ); /* Q12 */ |
| 449 | n_LF_Q14 = silk_LSHIFT( n_LF_Q14, 2 ); /* Q12 -> Q14 */ |
| 450 | |
| 451 | /* Input minus prediction plus noise feedback */ |
| 452 | /* r = x[ i ] - LTP_pred - LPC_pred + n_AR + n_Tilt + n_LF + n_LTP */ |
| 453 | tmp1 = silk_ADD32( n_AR_Q14, n_LF_Q14 ); /* Q14 */ |
| 454 | tmp2 = silk_ADD32( n_LTP_Q14, LPC_pred_Q14 ); /* Q13 */ |
| 455 | tmp1 = silk_SUB32( tmp2, tmp1 ); /* Q13 */ |
| 456 | tmp1 = silk_RSHIFT_ROUND( tmp1, 4 ); /* Q10 */ |
| 457 | |
| 458 | r_Q10 = silk_SUB32( x_Q10[ i ], tmp1 ); /* residual error Q10 */ |
| 459 | |
| 460 | /* Flip sign depending on dither */ |
| 461 | if ( psDD->Seed < 0 ) { |
| 462 | r_Q10 = -r_Q10; |
| 463 | } |
| 464 | r_Q10 = silk_LIMIT_32( r_Q10, -(31 << 10), 30 << 10 ); |
| 465 | |
| 466 | /* Find two quantization level candidates and measure their rate-distortion */ |
| 467 | q1_Q10 = silk_SUB32( r_Q10, offset_Q10 ); |
| 468 | q1_Q0 = silk_RSHIFT( q1_Q10, 10 ); |
| 469 | if( q1_Q0 > 0 ) { |
| 470 | q1_Q10 = silk_SUB32( silk_LSHIFT( q1_Q0, 10 ), QUANT_LEVEL_ADJUST_Q10 ); |
| 471 | q1_Q10 = silk_ADD32( q1_Q10, offset_Q10 ); |
| 472 | q2_Q10 = silk_ADD32( q1_Q10, 1024 ); |
| 473 | rd1_Q10 = silk_SMULBB( q1_Q10, Lambda_Q10 ); |
| 474 | rd2_Q10 = silk_SMULBB( q2_Q10, Lambda_Q10 ); |
| 475 | } else if( q1_Q0 == 0 ) { |
| 476 | q1_Q10 = offset_Q10; |
| 477 | q2_Q10 = silk_ADD32( q1_Q10, 1024 - QUANT_LEVEL_ADJUST_Q10 ); |
| 478 | rd1_Q10 = silk_SMULBB( q1_Q10, Lambda_Q10 ); |
| 479 | rd2_Q10 = silk_SMULBB( q2_Q10, Lambda_Q10 ); |
| 480 | } else if( q1_Q0 == -1 ) { |
| 481 | q2_Q10 = offset_Q10; |
| 482 | q1_Q10 = silk_SUB32( q2_Q10, 1024 - QUANT_LEVEL_ADJUST_Q10 ); |
| 483 | rd1_Q10 = silk_SMULBB( -q1_Q10, Lambda_Q10 ); |
| 484 | rd2_Q10 = silk_SMULBB( q2_Q10, Lambda_Q10 ); |
| 485 | } else { /* q1_Q0 < -1 */ |
| 486 | q1_Q10 = silk_ADD32( silk_LSHIFT( q1_Q0, 10 ), QUANT_LEVEL_ADJUST_Q10 ); |
| 487 | q1_Q10 = silk_ADD32( q1_Q10, offset_Q10 ); |
| 488 | q2_Q10 = silk_ADD32( q1_Q10, 1024 ); |
| 489 | rd1_Q10 = silk_SMULBB( -q1_Q10, Lambda_Q10 ); |
| 490 | rd2_Q10 = silk_SMULBB( -q2_Q10, Lambda_Q10 ); |
| 491 | } |
| 492 | rr_Q10 = silk_SUB32( r_Q10, q1_Q10 ); |
| 493 | rd1_Q10 = silk_RSHIFT( silk_SMLABB( rd1_Q10, rr_Q10, rr_Q10 ), 10 ); |
| 494 | rr_Q10 = silk_SUB32( r_Q10, q2_Q10 ); |
| 495 | rd2_Q10 = silk_RSHIFT( silk_SMLABB( rd2_Q10, rr_Q10, rr_Q10 ), 10 ); |
| 496 | |
| 497 | if( rd1_Q10 < rd2_Q10 ) { |
| 498 | psSS[ 0 ].RD_Q10 = silk_ADD32( psDD->RD_Q10, rd1_Q10 ); |
| 499 | psSS[ 1 ].RD_Q10 = silk_ADD32( psDD->RD_Q10, rd2_Q10 ); |
| 500 | psSS[ 0 ].Q_Q10 = q1_Q10; |
| 501 | psSS[ 1 ].Q_Q10 = q2_Q10; |
| 502 | } else { |
| 503 | psSS[ 0 ].RD_Q10 = silk_ADD32( psDD->RD_Q10, rd2_Q10 ); |
| 504 | psSS[ 1 ].RD_Q10 = silk_ADD32( psDD->RD_Q10, rd1_Q10 ); |
| 505 | psSS[ 0 ].Q_Q10 = q2_Q10; |
| 506 | psSS[ 1 ].Q_Q10 = q1_Q10; |
| 507 | } |
| 508 | |
| 509 | /* Update states for best quantization */ |
| 510 | |
| 511 | /* Quantized excitation */ |
| 512 | exc_Q14 = silk_LSHIFT32( psSS[ 0 ].Q_Q10, 4 ); |
| 513 | if ( psDD->Seed < 0 ) { |
| 514 | exc_Q14 = -exc_Q14; |
| 515 | } |
| 516 | |
| 517 | /* Add predictions */ |
| 518 | LPC_exc_Q14 = silk_ADD32( exc_Q14, LTP_pred_Q14 ); |
| 519 | xq_Q14 = silk_ADD32( LPC_exc_Q14, LPC_pred_Q14 ); |
| 520 | |
| 521 | /* Update states */ |
| 522 | sLF_AR_shp_Q14 = silk_SUB32( xq_Q14, n_AR_Q14 ); |
| 523 | psSS[ 0 ].sLTP_shp_Q14 = silk_SUB32( sLF_AR_shp_Q14, n_LF_Q14 ); |
| 524 | psSS[ 0 ].LF_AR_Q14 = sLF_AR_shp_Q14; |
| 525 | psSS[ 0 ].LPC_exc_Q14 = LPC_exc_Q14; |
| 526 | psSS[ 0 ].xq_Q14 = xq_Q14; |
| 527 | |
| 528 | /* Update states for second best quantization */ |
| 529 | |
| 530 | /* Quantized excitation */ |
| 531 | exc_Q14 = silk_LSHIFT32( psSS[ 1 ].Q_Q10, 4 ); |
| 532 | if ( psDD->Seed < 0 ) { |
| 533 | exc_Q14 = -exc_Q14; |
| 534 | } |
| 535 | |
| 536 | |
| 537 | /* Add predictions */ |
| 538 | LPC_exc_Q14 = silk_ADD32( exc_Q14, LTP_pred_Q14 ); |
| 539 | xq_Q14 = silk_ADD32( LPC_exc_Q14, LPC_pred_Q14 ); |
| 540 | |
| 541 | /* Update states */ |
| 542 | sLF_AR_shp_Q14 = silk_SUB32( xq_Q14, n_AR_Q14 ); |
| 543 | psSS[ 1 ].sLTP_shp_Q14 = silk_SUB32( sLF_AR_shp_Q14, n_LF_Q14 ); |
| 544 | psSS[ 1 ].LF_AR_Q14 = sLF_AR_shp_Q14; |
| 545 | psSS[ 1 ].LPC_exc_Q14 = LPC_exc_Q14; |
| 546 | psSS[ 1 ].xq_Q14 = xq_Q14; |
| 547 | } |
| 548 | |
| 549 | *smpl_buf_idx = ( *smpl_buf_idx - 1 ) & DECISION_DELAY_MASK; /* Index to newest samples */ |
| 550 | last_smple_idx = ( *smpl_buf_idx + decisionDelay ) & DECISION_DELAY_MASK; /* Index to decisionDelay old samples */ |
| 551 | |
| 552 | /* Find winner */ |
| 553 | RDmin_Q10 = psSampleState[ 0 ][ 0 ].RD_Q10; |
| 554 | Winner_ind = 0; |
| 555 | for( k = 1; k < nStatesDelayedDecision; k++ ) { |
| 556 | if( psSampleState[ k ][ 0 ].RD_Q10 < RDmin_Q10 ) { |
| 557 | RDmin_Q10 = psSampleState[ k ][ 0 ].RD_Q10; |
| 558 | Winner_ind = k; |
| 559 | } |
| 560 | } |
| 561 | |
| 562 | /* Increase RD values of expired states */ |
| 563 | Winner_rand_state = psDelDec[ Winner_ind ].RandState[ last_smple_idx ]; |
| 564 | for( k = 0; k < nStatesDelayedDecision; k++ ) { |
| 565 | if( psDelDec[ k ].RandState[ last_smple_idx ] != Winner_rand_state ) { |
| 566 | psSampleState[ k ][ 0 ].RD_Q10 = silk_ADD32( psSampleState[ k ][ 0 ].RD_Q10, silk_int32_MAX >> 4 ); |
| 567 | psSampleState[ k ][ 1 ].RD_Q10 = silk_ADD32( psSampleState[ k ][ 1 ].RD_Q10, silk_int32_MAX >> 4 ); |
| 568 | silk_assert( psSampleState[ k ][ 0 ].RD_Q10 >= 0 ); |
| 569 | } |
| 570 | } |
| 571 | |
| 572 | /* Find worst in first set and best in second set */ |
| 573 | RDmax_Q10 = psSampleState[ 0 ][ 0 ].RD_Q10; |
| 574 | RDmin_Q10 = psSampleState[ 0 ][ 1 ].RD_Q10; |
| 575 | RDmax_ind = 0; |
| 576 | RDmin_ind = 0; |
| 577 | for( k = 1; k < nStatesDelayedDecision; k++ ) { |
| 578 | /* find worst in first set */ |
| 579 | if( psSampleState[ k ][ 0 ].RD_Q10 > RDmax_Q10 ) { |
| 580 | RDmax_Q10 = psSampleState[ k ][ 0 ].RD_Q10; |
| 581 | RDmax_ind = k; |
| 582 | } |
| 583 | /* find best in second set */ |
| 584 | if( psSampleState[ k ][ 1 ].RD_Q10 < RDmin_Q10 ) { |
| 585 | RDmin_Q10 = psSampleState[ k ][ 1 ].RD_Q10; |
| 586 | RDmin_ind = k; |
| 587 | } |
| 588 | } |
| 589 | |
| 590 | /* Replace a state if best from second set outperforms worst in first set */ |
| 591 | if( RDmin_Q10 < RDmax_Q10 ) { |
| 592 | silk_memcpy( ( (opus_int32 *)&psDelDec[ RDmax_ind ] ) + i, |
| 593 | ( (opus_int32 *)&psDelDec[ RDmin_ind ] ) + i, sizeof( NSQ_del_dec_struct ) - i * sizeof( opus_int32) ); |
| 594 | silk_memcpy( &psSampleState[ RDmax_ind ][ 0 ], &psSampleState[ RDmin_ind ][ 1 ], sizeof( NSQ_sample_struct ) ); |
| 595 | } |
| 596 | |
| 597 | /* Write samples from winner to output and long-term filter states */ |
| 598 | psDD = &psDelDec[ Winner_ind ]; |
| 599 | if( subfr > 0 || i >= decisionDelay ) { |
| 600 | pulses[ i - decisionDelay ] = (opus_int8)silk_RSHIFT_ROUND( psDD->Q_Q10[ last_smple_idx ], 10 ); |
| 601 | xq[ i - decisionDelay ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( |
| 602 | silk_SMULWW( psDD->Xq_Q14[ last_smple_idx ], delayedGain_Q10[ last_smple_idx ] ), 8 ) ); |
| 603 | NSQ->sLTP_shp_Q14[ NSQ->sLTP_shp_buf_idx - decisionDelay ] = psDD->Shape_Q14[ last_smple_idx ]; |
| 604 | sLTP_Q15[ NSQ->sLTP_buf_idx - decisionDelay ] = psDD->Pred_Q15[ last_smple_idx ]; |
| 605 | } |
| 606 | NSQ->sLTP_shp_buf_idx++; |
| 607 | NSQ->sLTP_buf_idx++; |
| 608 | |
| 609 | /* Update states */ |
| 610 | for( k = 0; k < nStatesDelayedDecision; k++ ) { |
| 611 | psDD = &psDelDec[ k ]; |
| 612 | psSS = &psSampleState[ k ][ 0 ]; |
| 613 | psDD->LF_AR_Q14 = psSS->LF_AR_Q14; |
| 614 | psDD->sLPC_Q14[ NSQ_LPC_BUF_LENGTH + i ] = psSS->xq_Q14; |
| 615 | psDD->Xq_Q14[ *smpl_buf_idx ] = psSS->xq_Q14; |
| 616 | psDD->Q_Q10[ *smpl_buf_idx ] = psSS->Q_Q10; |
| 617 | psDD->Pred_Q15[ *smpl_buf_idx ] = silk_LSHIFT32( psSS->LPC_exc_Q14, 1 ); |
| 618 | psDD->Shape_Q14[ *smpl_buf_idx ] = psSS->sLTP_shp_Q14; |
| 619 | psDD->Seed = silk_ADD32_ovflw( psDD->Seed, silk_RSHIFT_ROUND( psSS->Q_Q10, 10 ) ); |
| 620 | psDD->RandState[ *smpl_buf_idx ] = psDD->Seed; |
| 621 | psDD->RD_Q10 = psSS->RD_Q10; |
| 622 | } |
| 623 | delayedGain_Q10[ *smpl_buf_idx ] = Gain_Q10; |
| 624 | } |
| 625 | /* Update LPC states */ |
| 626 | for( k = 0; k < nStatesDelayedDecision; k++ ) { |
| 627 | psDD = &psDelDec[ k ]; |
| 628 | silk_memcpy( psDD->sLPC_Q14, &psDD->sLPC_Q14[ length ], NSQ_LPC_BUF_LENGTH * sizeof( opus_int32 ) ); |
| 629 | } |
tlegrand@chromium.org | e3ea049 | 2013-10-23 09:13:50 +0000 | [diff] [blame] | 630 | RESTORE_STACK; |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 631 | } |
| 632 | |
tlegrand@google.com | 3c3902f | 2013-12-09 08:35:25 +0000 | [diff] [blame^] | 633 | static OPUS_INLINE void silk_nsq_del_dec_scale_states( |
sergeyu@chromium.org | 885f2ff | 2012-10-17 22:31:52 +0000 | [diff] [blame] | 634 | const silk_encoder_state *psEncC, /* I Encoder State */ |
| 635 | silk_nsq_state *NSQ, /* I/O NSQ state */ |
| 636 | NSQ_del_dec_struct psDelDec[], /* I/O Delayed decision states */ |
| 637 | const opus_int32 x_Q3[], /* I Input in Q3 */ |
| 638 | opus_int32 x_sc_Q10[], /* O Input scaled with 1/Gain in Q10 */ |
| 639 | const opus_int16 sLTP[], /* I Re-whitened LTP state in Q0 */ |
| 640 | opus_int32 sLTP_Q15[], /* O LTP state matching scaled input */ |
| 641 | opus_int subfr, /* I Subframe number */ |
| 642 | opus_int nStatesDelayedDecision, /* I Number of del dec states */ |
| 643 | const opus_int LTP_scale_Q14, /* I LTP state scaling */ |
| 644 | const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I */ |
| 645 | const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lag */ |
| 646 | const opus_int signal_type, /* I Signal type */ |
| 647 | const opus_int decisionDelay /* I Decision delay */ |
| 648 | ) |
| 649 | { |
| 650 | opus_int i, k, lag; |
| 651 | opus_int32 gain_adj_Q16, inv_gain_Q31, inv_gain_Q23; |
| 652 | NSQ_del_dec_struct *psDD; |
| 653 | |
| 654 | lag = pitchL[ subfr ]; |
| 655 | inv_gain_Q31 = silk_INVERSE32_varQ( silk_max( Gains_Q16[ subfr ], 1 ), 47 ); |
| 656 | silk_assert( inv_gain_Q31 != 0 ); |
| 657 | |
| 658 | /* Calculate gain adjustment factor */ |
| 659 | if( Gains_Q16[ subfr ] != NSQ->prev_gain_Q16 ) { |
| 660 | gain_adj_Q16 = silk_DIV32_varQ( NSQ->prev_gain_Q16, Gains_Q16[ subfr ], 16 ); |
| 661 | } else { |
| 662 | gain_adj_Q16 = (opus_int32)1 << 16; |
| 663 | } |
| 664 | |
| 665 | /* Scale input */ |
| 666 | inv_gain_Q23 = silk_RSHIFT_ROUND( inv_gain_Q31, 8 ); |
| 667 | for( i = 0; i < psEncC->subfr_length; i++ ) { |
| 668 | x_sc_Q10[ i ] = silk_SMULWW( x_Q3[ i ], inv_gain_Q23 ); |
| 669 | } |
| 670 | |
| 671 | /* Save inverse gain */ |
| 672 | NSQ->prev_gain_Q16 = Gains_Q16[ subfr ]; |
| 673 | |
| 674 | /* After rewhitening the LTP state is un-scaled, so scale with inv_gain_Q16 */ |
| 675 | if( NSQ->rewhite_flag ) { |
| 676 | if( subfr == 0 ) { |
| 677 | /* Do LTP downscaling */ |
| 678 | inv_gain_Q31 = silk_LSHIFT( silk_SMULWB( inv_gain_Q31, LTP_scale_Q14 ), 2 ); |
| 679 | } |
| 680 | for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx; i++ ) { |
| 681 | silk_assert( i < MAX_FRAME_LENGTH ); |
| 682 | sLTP_Q15[ i ] = silk_SMULWB( inv_gain_Q31, sLTP[ i ] ); |
| 683 | } |
| 684 | } |
| 685 | |
| 686 | /* Adjust for changing gain */ |
| 687 | if( gain_adj_Q16 != (opus_int32)1 << 16 ) { |
| 688 | /* Scale long-term shaping state */ |
| 689 | for( i = NSQ->sLTP_shp_buf_idx - psEncC->ltp_mem_length; i < NSQ->sLTP_shp_buf_idx; i++ ) { |
| 690 | NSQ->sLTP_shp_Q14[ i ] = silk_SMULWW( gain_adj_Q16, NSQ->sLTP_shp_Q14[ i ] ); |
| 691 | } |
| 692 | |
| 693 | /* Scale long-term prediction state */ |
| 694 | if( signal_type == TYPE_VOICED && NSQ->rewhite_flag == 0 ) { |
| 695 | for( i = NSQ->sLTP_buf_idx - lag - LTP_ORDER / 2; i < NSQ->sLTP_buf_idx - decisionDelay; i++ ) { |
| 696 | sLTP_Q15[ i ] = silk_SMULWW( gain_adj_Q16, sLTP_Q15[ i ] ); |
| 697 | } |
| 698 | } |
| 699 | |
| 700 | for( k = 0; k < nStatesDelayedDecision; k++ ) { |
| 701 | psDD = &psDelDec[ k ]; |
| 702 | |
| 703 | /* Scale scalar states */ |
| 704 | psDD->LF_AR_Q14 = silk_SMULWW( gain_adj_Q16, psDD->LF_AR_Q14 ); |
| 705 | |
| 706 | /* Scale short-term prediction and shaping states */ |
| 707 | for( i = 0; i < NSQ_LPC_BUF_LENGTH; i++ ) { |
| 708 | psDD->sLPC_Q14[ i ] = silk_SMULWW( gain_adj_Q16, psDD->sLPC_Q14[ i ] ); |
| 709 | } |
| 710 | for( i = 0; i < MAX_SHAPE_LPC_ORDER; i++ ) { |
| 711 | psDD->sAR2_Q14[ i ] = silk_SMULWW( gain_adj_Q16, psDD->sAR2_Q14[ i ] ); |
| 712 | } |
| 713 | for( i = 0; i < DECISION_DELAY; i++ ) { |
| 714 | psDD->Pred_Q15[ i ] = silk_SMULWW( gain_adj_Q16, psDD->Pred_Q15[ i ] ); |
| 715 | psDD->Shape_Q14[ i ] = silk_SMULWW( gain_adj_Q16, psDD->Shape_Q14[ i ] ); |
| 716 | } |
| 717 | } |
| 718 | } |
| 719 | } |