Alexandre Lision | 744f742 | 2013-09-25 11:39:37 -0400 | [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. |
| 11 | - Neither the name of Internet Society, IETF or IETF Trust, nor the |
| 12 | names of specific contributors, may be used to endorse or promote |
| 13 | products derived from this software without specific prior written |
| 14 | permission. |
| 15 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” |
| 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_FLP.h" |
| 33 | #include "tuning_parameters.h" |
| 34 | |
| 35 | /* Low Bitrate Redundancy (LBRR) encoding. Reuse all parameters but encode with lower bitrate */ |
| 36 | static inline void silk_LBRR_encode_FLP( |
| 37 | silk_encoder_state_FLP *psEnc, /* I/O Encoder state FLP */ |
| 38 | silk_encoder_control_FLP *psEncCtrl, /* I/O Encoder control FLP */ |
| 39 | const silk_float xfw[], /* I Input signal */ |
| 40 | opus_int condCoding /* I The type of conditional coding used so far for this frame */ |
| 41 | ); |
| 42 | |
| 43 | void silk_encode_do_VAD_FLP( |
| 44 | silk_encoder_state_FLP *psEnc /* I/O Encoder state FLP */ |
| 45 | ) |
| 46 | { |
| 47 | /****************************/ |
| 48 | /* Voice Activity Detection */ |
| 49 | /****************************/ |
| 50 | silk_VAD_GetSA_Q8( &psEnc->sCmn, psEnc->sCmn.inputBuf + 1 ); |
| 51 | |
| 52 | /**************************************************/ |
| 53 | /* Convert speech activity into VAD and DTX flags */ |
| 54 | /**************************************************/ |
| 55 | if( psEnc->sCmn.speech_activity_Q8 < SILK_FIX_CONST( SPEECH_ACTIVITY_DTX_THRES, 8 ) ) { |
| 56 | psEnc->sCmn.indices.signalType = TYPE_NO_VOICE_ACTIVITY; |
| 57 | psEnc->sCmn.noSpeechCounter++; |
| 58 | if( psEnc->sCmn.noSpeechCounter < NB_SPEECH_FRAMES_BEFORE_DTX ) { |
| 59 | psEnc->sCmn.inDTX = 0; |
| 60 | } else if( psEnc->sCmn.noSpeechCounter > MAX_CONSECUTIVE_DTX + NB_SPEECH_FRAMES_BEFORE_DTX ) { |
| 61 | psEnc->sCmn.noSpeechCounter = NB_SPEECH_FRAMES_BEFORE_DTX; |
| 62 | psEnc->sCmn.inDTX = 0; |
| 63 | } |
| 64 | psEnc->sCmn.VAD_flags[ psEnc->sCmn.nFramesEncoded ] = 0; |
| 65 | } else { |
| 66 | psEnc->sCmn.noSpeechCounter = 0; |
| 67 | psEnc->sCmn.inDTX = 0; |
| 68 | psEnc->sCmn.indices.signalType = TYPE_UNVOICED; |
| 69 | psEnc->sCmn.VAD_flags[ psEnc->sCmn.nFramesEncoded ] = 1; |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | /****************/ |
| 74 | /* Encode frame */ |
| 75 | /****************/ |
| 76 | opus_int silk_encode_frame_FLP( |
| 77 | silk_encoder_state_FLP *psEnc, /* I/O Encoder state FLP */ |
| 78 | opus_int32 *pnBytesOut, /* O Number of payload bytes; */ |
| 79 | ec_enc *psRangeEnc, /* I/O compressor data structure */ |
| 80 | opus_int condCoding, /* I The type of conditional coding to use */ |
| 81 | opus_int maxBits, /* I If > 0: maximum number of output bits */ |
| 82 | opus_int useCBR /* I Flag to force constant-bitrate operation */ |
| 83 | ) |
| 84 | { |
| 85 | silk_encoder_control_FLP sEncCtrl; |
| 86 | opus_int i, iter, maxIter, found_upper, found_lower, ret = 0; |
| 87 | silk_float *x_frame, *res_pitch_frame; |
| 88 | silk_float xfw[ MAX_FRAME_LENGTH ]; |
| 89 | silk_float res_pitch[ 2 * MAX_FRAME_LENGTH + LA_PITCH_MAX ]; |
| 90 | ec_enc sRangeEnc_copy, sRangeEnc_copy2; |
| 91 | silk_nsq_state sNSQ_copy, sNSQ_copy2; |
| 92 | opus_int32 seed_copy, nBits, nBits_lower, nBits_upper, gainMult_lower, gainMult_upper; |
| 93 | opus_int32 gainsID, gainsID_lower, gainsID_upper; |
| 94 | opus_int16 gainMult_Q8; |
| 95 | opus_int16 ec_prevLagIndex_copy; |
| 96 | opus_int ec_prevSignalType_copy; |
| 97 | opus_int8 LastGainIndex_copy2; |
| 98 | opus_int32 pGains_Q16[ MAX_NB_SUBFR ]; |
| 99 | opus_uint8 ec_buf_copy[ 1275 ]; |
| 100 | |
| 101 | /* This is totally unnecessary but many compilers (including gcc) are too dumb to realise it */ |
| 102 | LastGainIndex_copy2 = nBits_lower = nBits_upper = gainMult_lower = gainMult_upper = 0; |
| 103 | |
| 104 | psEnc->sCmn.indices.Seed = psEnc->sCmn.frameCounter++ & 3; |
| 105 | |
| 106 | /**************************************************************/ |
| 107 | /* Set up Input Pointers, and insert frame in input buffer */ |
| 108 | /**************************************************************/ |
| 109 | /* pointers aligned with start of frame to encode */ |
| 110 | x_frame = psEnc->x_buf + psEnc->sCmn.ltp_mem_length; /* start of frame to encode */ |
| 111 | res_pitch_frame = res_pitch + psEnc->sCmn.ltp_mem_length; /* start of pitch LPC residual frame */ |
| 112 | |
| 113 | /***************************************/ |
| 114 | /* Ensure smooth bandwidth transitions */ |
| 115 | /***************************************/ |
| 116 | silk_LP_variable_cutoff( &psEnc->sCmn.sLP, psEnc->sCmn.inputBuf + 1, psEnc->sCmn.frame_length ); |
| 117 | |
| 118 | /*******************************************/ |
| 119 | /* Copy new frame to front of input buffer */ |
| 120 | /*******************************************/ |
| 121 | silk_short2float_array( x_frame + LA_SHAPE_MS * psEnc->sCmn.fs_kHz, psEnc->sCmn.inputBuf + 1, psEnc->sCmn.frame_length ); |
| 122 | |
| 123 | /* Add tiny signal to avoid high CPU load from denormalized floating point numbers */ |
| 124 | for( i = 0; i < 8; i++ ) { |
| 125 | x_frame[ LA_SHAPE_MS * psEnc->sCmn.fs_kHz + i * ( psEnc->sCmn.frame_length >> 3 ) ] += ( 1 - ( i & 2 ) ) * 1e-6f; |
| 126 | } |
| 127 | |
| 128 | if( !psEnc->sCmn.prefillFlag ) { |
| 129 | /*****************************************/ |
| 130 | /* Find pitch lags, initial LPC analysis */ |
| 131 | /*****************************************/ |
| 132 | silk_find_pitch_lags_FLP( psEnc, &sEncCtrl, res_pitch, x_frame ); |
| 133 | |
| 134 | /************************/ |
| 135 | /* Noise shape analysis */ |
| 136 | /************************/ |
| 137 | silk_noise_shape_analysis_FLP( psEnc, &sEncCtrl, res_pitch_frame, x_frame ); |
| 138 | |
| 139 | /***************************************************/ |
| 140 | /* Find linear prediction coefficients (LPC + LTP) */ |
| 141 | /***************************************************/ |
| 142 | silk_find_pred_coefs_FLP( psEnc, &sEncCtrl, res_pitch, x_frame, condCoding ); |
| 143 | |
| 144 | /****************************************/ |
| 145 | /* Process gains */ |
| 146 | /****************************************/ |
| 147 | silk_process_gains_FLP( psEnc, &sEncCtrl, condCoding ); |
| 148 | |
| 149 | /*****************************************/ |
| 150 | /* Prefiltering for noise shaper */ |
| 151 | /*****************************************/ |
| 152 | silk_prefilter_FLP( psEnc, &sEncCtrl, xfw, x_frame ); |
| 153 | |
| 154 | /****************************************/ |
| 155 | /* Low Bitrate Redundant Encoding */ |
| 156 | /****************************************/ |
| 157 | silk_LBRR_encode_FLP( psEnc, &sEncCtrl, xfw, condCoding ); |
| 158 | |
| 159 | /* Loop over quantizer and entroy coding to control bitrate */ |
| 160 | maxIter = 6; |
| 161 | gainMult_Q8 = SILK_FIX_CONST( 1, 8 ); |
| 162 | found_lower = 0; |
| 163 | found_upper = 0; |
| 164 | gainsID = silk_gains_ID( psEnc->sCmn.indices.GainsIndices, psEnc->sCmn.nb_subfr ); |
| 165 | gainsID_lower = -1; |
| 166 | gainsID_upper = -1; |
| 167 | /* Copy part of the input state */ |
| 168 | silk_memcpy( &sRangeEnc_copy, psRangeEnc, sizeof( ec_enc ) ); |
| 169 | silk_memcpy( &sNSQ_copy, &psEnc->sCmn.sNSQ, sizeof( silk_nsq_state ) ); |
| 170 | seed_copy = psEnc->sCmn.indices.Seed; |
| 171 | ec_prevLagIndex_copy = psEnc->sCmn.ec_prevLagIndex; |
| 172 | ec_prevSignalType_copy = psEnc->sCmn.ec_prevSignalType; |
| 173 | for( iter = 0; ; iter++ ) { |
| 174 | if( gainsID == gainsID_lower ) { |
| 175 | nBits = nBits_lower; |
| 176 | } else if( gainsID == gainsID_upper ) { |
| 177 | nBits = nBits_upper; |
| 178 | } else { |
| 179 | /* Restore part of the input state */ |
| 180 | if( iter > 0 ) { |
| 181 | silk_memcpy( psRangeEnc, &sRangeEnc_copy, sizeof( ec_enc ) ); |
| 182 | silk_memcpy( &psEnc->sCmn.sNSQ, &sNSQ_copy, sizeof( silk_nsq_state ) ); |
| 183 | psEnc->sCmn.indices.Seed = seed_copy; |
| 184 | psEnc->sCmn.ec_prevLagIndex = ec_prevLagIndex_copy; |
| 185 | psEnc->sCmn.ec_prevSignalType = ec_prevSignalType_copy; |
| 186 | } |
| 187 | |
| 188 | /*****************************************/ |
| 189 | /* Noise shaping quantization */ |
| 190 | /*****************************************/ |
| 191 | silk_NSQ_wrapper_FLP( psEnc, &sEncCtrl, &psEnc->sCmn.indices, &psEnc->sCmn.sNSQ, psEnc->sCmn.pulses, xfw ); |
| 192 | |
| 193 | /****************************************/ |
| 194 | /* Encode Parameters */ |
| 195 | /****************************************/ |
| 196 | silk_encode_indices( &psEnc->sCmn, psRangeEnc, psEnc->sCmn.nFramesEncoded, 0, condCoding ); |
| 197 | |
| 198 | /****************************************/ |
| 199 | /* Encode Excitation Signal */ |
| 200 | /****************************************/ |
| 201 | silk_encode_pulses( psRangeEnc, psEnc->sCmn.indices.signalType, psEnc->sCmn.indices.quantOffsetType, |
| 202 | psEnc->sCmn.pulses, psEnc->sCmn.frame_length ); |
| 203 | |
| 204 | nBits = ec_tell( psRangeEnc ); |
| 205 | |
| 206 | if( useCBR == 0 && iter == 0 && nBits <= maxBits ) { |
| 207 | break; |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | if( iter == maxIter ) { |
| 212 | if( found_lower && ( gainsID == gainsID_lower || nBits > maxBits ) ) { |
| 213 | /* Restore output state from earlier iteration that did meet the bitrate budget */ |
| 214 | silk_memcpy( psRangeEnc, &sRangeEnc_copy2, sizeof( ec_enc ) ); |
| 215 | silk_assert( sRangeEnc_copy2.offs <= 1275 ); |
| 216 | silk_memcpy( psRangeEnc->buf, ec_buf_copy, sRangeEnc_copy2.offs ); |
| 217 | silk_memcpy( &psEnc->sCmn.sNSQ, &sNSQ_copy2, sizeof( silk_nsq_state ) ); |
| 218 | psEnc->sShape.LastGainIndex = LastGainIndex_copy2; |
| 219 | } |
| 220 | break; |
| 221 | } |
| 222 | |
| 223 | if( nBits > maxBits ) { |
| 224 | if( found_lower == 0 && iter >= 2 ) { |
| 225 | /* Adjust the quantizer's rate/distortion tradeoff and discard previous "upper" results */ |
| 226 | sEncCtrl.Lambda *= 1.5f; |
| 227 | found_upper = 0; |
| 228 | gainsID_upper = -1; |
| 229 | } else { |
| 230 | found_upper = 1; |
| 231 | nBits_upper = nBits; |
| 232 | gainMult_upper = gainMult_Q8; |
| 233 | gainsID_upper = gainsID; |
| 234 | } |
| 235 | } else if( nBits < maxBits - 5 ) { |
| 236 | found_lower = 1; |
| 237 | nBits_lower = nBits; |
| 238 | gainMult_lower = gainMult_Q8; |
| 239 | if( gainsID != gainsID_lower ) { |
| 240 | gainsID_lower = gainsID; |
| 241 | /* Copy part of the output state */ |
| 242 | silk_memcpy( &sRangeEnc_copy2, psRangeEnc, sizeof( ec_enc ) ); |
| 243 | silk_assert( psRangeEnc->offs <= 1275 ); |
| 244 | silk_memcpy( ec_buf_copy, psRangeEnc->buf, psRangeEnc->offs ); |
| 245 | silk_memcpy( &sNSQ_copy2, &psEnc->sCmn.sNSQ, sizeof( silk_nsq_state ) ); |
| 246 | LastGainIndex_copy2 = psEnc->sShape.LastGainIndex; |
| 247 | } |
| 248 | } else { |
| 249 | /* Within 5 bits of budget: close enough */ |
| 250 | break; |
| 251 | } |
| 252 | |
| 253 | if( ( found_lower & found_upper ) == 0 ) { |
| 254 | /* Adjust gain according to high-rate rate/distortion curve */ |
| 255 | opus_int32 gain_factor_Q16; |
| 256 | gain_factor_Q16 = silk_log2lin( silk_LSHIFT( nBits - maxBits, 7 ) / psEnc->sCmn.frame_length + SILK_FIX_CONST( 16, 7 ) ); |
| 257 | gain_factor_Q16 = silk_min_32( gain_factor_Q16, SILK_FIX_CONST( 2, 16 ) ); |
| 258 | if( nBits > maxBits ) { |
| 259 | gain_factor_Q16 = silk_max_32( gain_factor_Q16, SILK_FIX_CONST( 1.3, 16 ) ); |
| 260 | } |
| 261 | gainMult_Q8 = silk_SMULWB( gain_factor_Q16, gainMult_Q8 ); |
| 262 | } else { |
| 263 | /* Adjust gain by interpolating */ |
| 264 | gainMult_Q8 = gainMult_lower + ( ( gainMult_upper - gainMult_lower ) * ( maxBits - nBits_lower ) ) / ( nBits_upper - nBits_lower ); |
| 265 | /* New gain multplier must be between 25% and 75% of old range (note that gainMult_upper < gainMult_lower) */ |
| 266 | if( gainMult_Q8 > silk_ADD_RSHIFT32( gainMult_lower, gainMult_upper - gainMult_lower, 2 ) ) { |
| 267 | gainMult_Q8 = silk_ADD_RSHIFT32( gainMult_lower, gainMult_upper - gainMult_lower, 2 ); |
| 268 | } else |
| 269 | if( gainMult_Q8 < silk_SUB_RSHIFT32( gainMult_upper, gainMult_upper - gainMult_lower, 2 ) ) { |
| 270 | gainMult_Q8 = silk_SUB_RSHIFT32( gainMult_upper, gainMult_upper - gainMult_lower, 2 ); |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) { |
| 275 | pGains_Q16[ i ] = silk_LSHIFT_SAT32( silk_SMULWB( sEncCtrl.GainsUnq_Q16[ i ], gainMult_Q8 ), 8 ); |
| 276 | } |
| 277 | |
| 278 | /* Quantize gains */ |
| 279 | psEnc->sShape.LastGainIndex = sEncCtrl.lastGainIndexPrev; |
| 280 | silk_gains_quant( psEnc->sCmn.indices.GainsIndices, pGains_Q16, |
| 281 | &psEnc->sShape.LastGainIndex, condCoding == CODE_CONDITIONALLY, psEnc->sCmn.nb_subfr ); |
| 282 | |
| 283 | /* Unique identifier of gains vector */ |
| 284 | gainsID = silk_gains_ID( psEnc->sCmn.indices.GainsIndices, psEnc->sCmn.nb_subfr ); |
| 285 | |
| 286 | /* Overwrite unquantized gains with quantized gains and convert back to Q0 from Q16 */ |
| 287 | for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) { |
| 288 | sEncCtrl.Gains[ i ] = pGains_Q16[ i ] / 65536.0f; |
| 289 | } |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | /* Update input buffer */ |
| 294 | silk_memmove( psEnc->x_buf, &psEnc->x_buf[ psEnc->sCmn.frame_length ], |
| 295 | ( psEnc->sCmn.ltp_mem_length + LA_SHAPE_MS * psEnc->sCmn.fs_kHz ) * sizeof( silk_float ) ); |
| 296 | |
| 297 | /* Parameters needed for next frame */ |
| 298 | psEnc->sCmn.prevLag = sEncCtrl.pitchL[ psEnc->sCmn.nb_subfr - 1 ]; |
| 299 | psEnc->sCmn.prevSignalType = psEnc->sCmn.indices.signalType; |
| 300 | |
| 301 | /* Exit without entropy coding */ |
| 302 | if( psEnc->sCmn.prefillFlag ) { |
| 303 | /* No payload */ |
| 304 | *pnBytesOut = 0; |
| 305 | return ret; |
| 306 | } |
| 307 | |
| 308 | /****************************************/ |
| 309 | /* Finalize payload */ |
| 310 | /****************************************/ |
| 311 | psEnc->sCmn.first_frame_after_reset = 0; |
| 312 | /* Payload size */ |
| 313 | *pnBytesOut = silk_RSHIFT( ec_tell( psRangeEnc ) + 7, 3 ); |
| 314 | |
| 315 | return ret; |
| 316 | } |
| 317 | |
| 318 | /* Low-Bitrate Redundancy (LBRR) encoding. Reuse all parameters but encode excitation at lower bitrate */ |
| 319 | static inline void silk_LBRR_encode_FLP( |
| 320 | silk_encoder_state_FLP *psEnc, /* I/O Encoder state FLP */ |
| 321 | silk_encoder_control_FLP *psEncCtrl, /* I/O Encoder control FLP */ |
| 322 | const silk_float xfw[], /* I Input signal */ |
| 323 | opus_int condCoding /* I The type of conditional coding used so far for this frame */ |
| 324 | ) |
| 325 | { |
| 326 | opus_int k; |
| 327 | opus_int32 Gains_Q16[ MAX_NB_SUBFR ]; |
| 328 | silk_float TempGains[ MAX_NB_SUBFR ]; |
| 329 | SideInfoIndices *psIndices_LBRR = &psEnc->sCmn.indices_LBRR[ psEnc->sCmn.nFramesEncoded ]; |
| 330 | silk_nsq_state sNSQ_LBRR; |
| 331 | |
| 332 | /*******************************************/ |
| 333 | /* Control use of inband LBRR */ |
| 334 | /*******************************************/ |
| 335 | if( psEnc->sCmn.LBRR_enabled && psEnc->sCmn.speech_activity_Q8 > SILK_FIX_CONST( LBRR_SPEECH_ACTIVITY_THRES, 8 ) ) { |
| 336 | psEnc->sCmn.LBRR_flags[ psEnc->sCmn.nFramesEncoded ] = 1; |
| 337 | |
| 338 | /* Copy noise shaping quantizer state and quantization indices from regular encoding */ |
| 339 | silk_memcpy( &sNSQ_LBRR, &psEnc->sCmn.sNSQ, sizeof( silk_nsq_state ) ); |
| 340 | silk_memcpy( psIndices_LBRR, &psEnc->sCmn.indices, sizeof( SideInfoIndices ) ); |
| 341 | |
| 342 | /* Save original gains */ |
| 343 | silk_memcpy( TempGains, psEncCtrl->Gains, psEnc->sCmn.nb_subfr * sizeof( silk_float ) ); |
| 344 | |
| 345 | if( psEnc->sCmn.nFramesEncoded == 0 || psEnc->sCmn.LBRR_flags[ psEnc->sCmn.nFramesEncoded - 1 ] == 0 ) { |
| 346 | /* First frame in packet or previous frame not LBRR coded */ |
| 347 | psEnc->sCmn.LBRRprevLastGainIndex = psEnc->sShape.LastGainIndex; |
| 348 | |
| 349 | /* Increase Gains to get target LBRR rate */ |
| 350 | psIndices_LBRR->GainsIndices[ 0 ] += psEnc->sCmn.LBRR_GainIncreases; |
| 351 | psIndices_LBRR->GainsIndices[ 0 ] = silk_min_int( psIndices_LBRR->GainsIndices[ 0 ], N_LEVELS_QGAIN - 1 ); |
| 352 | } |
| 353 | |
| 354 | /* Decode to get gains in sync with decoder */ |
| 355 | silk_gains_dequant( Gains_Q16, psIndices_LBRR->GainsIndices, |
| 356 | &psEnc->sCmn.LBRRprevLastGainIndex, condCoding == CODE_CONDITIONALLY, psEnc->sCmn.nb_subfr ); |
| 357 | |
| 358 | /* Overwrite unquantized gains with quantized gains and convert back to Q0 from Q16 */ |
| 359 | for( k = 0; k < psEnc->sCmn.nb_subfr; k++ ) { |
| 360 | psEncCtrl->Gains[ k ] = Gains_Q16[ k ] * ( 1.0f / 65536.0f ); |
| 361 | } |
| 362 | |
| 363 | /*****************************************/ |
| 364 | /* Noise shaping quantization */ |
| 365 | /*****************************************/ |
| 366 | silk_NSQ_wrapper_FLP( psEnc, psEncCtrl, psIndices_LBRR, &sNSQ_LBRR, |
| 367 | psEnc->sCmn.pulses_LBRR[ psEnc->sCmn.nFramesEncoded ], xfw ); |
| 368 | |
| 369 | /* Restore original gains */ |
| 370 | silk_memcpy( psEncCtrl->Gains, TempGains, psEnc->sCmn.nb_subfr * sizeof( silk_float ) ); |
| 371 | } |
| 372 | } |