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_FIX.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_FIX( |
| 37 | silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */ |
| 38 | silk_encoder_control_FIX *psEncCtrl, /* I/O Pointer to Silk FIX encoder control struct */ |
| 39 | const opus_int32 xfw_Q3[], /* 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_FIX( |
| 44 | silk_encoder_state_FIX *psEnc /* I/O Pointer to Silk FIX encoder state */ |
| 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_FIX( |
| 77 | silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */ |
| 78 | opus_int32 *pnBytesOut, /* O Pointer to 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_FIX sEncCtrl; |
| 86 | opus_int i, iter, maxIter, found_upper, found_lower, ret = 0; |
| 87 | opus_int16 *x_frame, *res_pitch_frame; |
| 88 | opus_int32 xfw_Q3[ MAX_FRAME_LENGTH ]; |
| 89 | opus_int16 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_uint8 ec_buf_copy[ 1275 ]; |
| 99 | |
| 100 | /* This is totally unnecessary but many compilers (including gcc) are too dumb to realise it */ |
| 101 | LastGainIndex_copy2 = nBits_lower = nBits_upper = gainMult_lower = gainMult_upper = 0; |
| 102 | |
| 103 | psEnc->sCmn.indices.Seed = psEnc->sCmn.frameCounter++ & 3; |
| 104 | |
| 105 | /**************************************************************/ |
| 106 | /* Set up Input Pointers, and insert frame in input buffer */ |
| 107 | /*************************************************************/ |
| 108 | /* pointers aligned with start of frame to encode */ |
| 109 | x_frame = psEnc->x_buf + psEnc->sCmn.ltp_mem_length; /* start of frame to encode */ |
| 110 | res_pitch_frame = res_pitch + psEnc->sCmn.ltp_mem_length; /* start of pitch LPC residual frame */ |
| 111 | |
| 112 | /***************************************/ |
| 113 | /* Ensure smooth bandwidth transitions */ |
| 114 | /***************************************/ |
| 115 | silk_LP_variable_cutoff( &psEnc->sCmn.sLP, psEnc->sCmn.inputBuf + 1, psEnc->sCmn.frame_length ); |
| 116 | |
| 117 | /*******************************************/ |
| 118 | /* Copy new frame to front of input buffer */ |
| 119 | /*******************************************/ |
| 120 | silk_memcpy( x_frame + LA_SHAPE_MS * psEnc->sCmn.fs_kHz, psEnc->sCmn.inputBuf + 1, psEnc->sCmn.frame_length * sizeof( opus_int16 ) ); |
| 121 | |
| 122 | if( !psEnc->sCmn.prefillFlag ) { |
| 123 | /*****************************************/ |
| 124 | /* Find pitch lags, initial LPC analysis */ |
| 125 | /*****************************************/ |
| 126 | silk_find_pitch_lags_FIX( psEnc, &sEncCtrl, res_pitch, x_frame ); |
| 127 | |
| 128 | /************************/ |
| 129 | /* Noise shape analysis */ |
| 130 | /************************/ |
| 131 | silk_noise_shape_analysis_FIX( psEnc, &sEncCtrl, res_pitch_frame, x_frame ); |
| 132 | |
| 133 | /***************************************************/ |
| 134 | /* Find linear prediction coefficients (LPC + LTP) */ |
| 135 | /***************************************************/ |
| 136 | silk_find_pred_coefs_FIX( psEnc, &sEncCtrl, res_pitch, x_frame, condCoding ); |
| 137 | |
| 138 | /****************************************/ |
| 139 | /* Process gains */ |
| 140 | /****************************************/ |
| 141 | silk_process_gains_FIX( psEnc, &sEncCtrl, condCoding ); |
| 142 | |
| 143 | /*****************************************/ |
| 144 | /* Prefiltering for noise shaper */ |
| 145 | /*****************************************/ |
| 146 | silk_prefilter_FIX( psEnc, &sEncCtrl, xfw_Q3, x_frame ); |
| 147 | |
| 148 | /****************************************/ |
| 149 | /* Low Bitrate Redundant Encoding */ |
| 150 | /****************************************/ |
| 151 | silk_LBRR_encode_FIX( psEnc, &sEncCtrl, xfw_Q3, condCoding ); |
| 152 | |
| 153 | /* Loop over quantizer and entropy coding to control bitrate */ |
| 154 | maxIter = 6; |
| 155 | gainMult_Q8 = SILK_FIX_CONST( 1, 8 ); |
| 156 | found_lower = 0; |
| 157 | found_upper = 0; |
| 158 | gainsID = silk_gains_ID( psEnc->sCmn.indices.GainsIndices, psEnc->sCmn.nb_subfr ); |
| 159 | gainsID_lower = -1; |
| 160 | gainsID_upper = -1; |
| 161 | /* Copy part of the input state */ |
| 162 | silk_memcpy( &sRangeEnc_copy, psRangeEnc, sizeof( ec_enc ) ); |
| 163 | silk_memcpy( &sNSQ_copy, &psEnc->sCmn.sNSQ, sizeof( silk_nsq_state ) ); |
| 164 | seed_copy = psEnc->sCmn.indices.Seed; |
| 165 | ec_prevLagIndex_copy = psEnc->sCmn.ec_prevLagIndex; |
| 166 | ec_prevSignalType_copy = psEnc->sCmn.ec_prevSignalType; |
| 167 | for( iter = 0; ; iter++ ) { |
| 168 | if( gainsID == gainsID_lower ) { |
| 169 | nBits = nBits_lower; |
| 170 | } else if( gainsID == gainsID_upper ) { |
| 171 | nBits = nBits_upper; |
| 172 | } else { |
| 173 | /* Restore part of the input state */ |
| 174 | if( iter > 0 ) { |
| 175 | silk_memcpy( psRangeEnc, &sRangeEnc_copy, sizeof( ec_enc ) ); |
| 176 | silk_memcpy( &psEnc->sCmn.sNSQ, &sNSQ_copy, sizeof( silk_nsq_state ) ); |
| 177 | psEnc->sCmn.indices.Seed = seed_copy; |
| 178 | psEnc->sCmn.ec_prevLagIndex = ec_prevLagIndex_copy; |
| 179 | psEnc->sCmn.ec_prevSignalType = ec_prevSignalType_copy; |
| 180 | } |
| 181 | |
| 182 | /*****************************************/ |
| 183 | /* Noise shaping quantization */ |
| 184 | /*****************************************/ |
| 185 | if( psEnc->sCmn.nStatesDelayedDecision > 1 || psEnc->sCmn.warping_Q16 > 0 ) { |
| 186 | silk_NSQ_del_dec( &psEnc->sCmn, &psEnc->sCmn.sNSQ, &psEnc->sCmn.indices, xfw_Q3, psEnc->sCmn.pulses, |
| 187 | sEncCtrl.PredCoef_Q12[ 0 ], sEncCtrl.LTPCoef_Q14, sEncCtrl.AR2_Q13, sEncCtrl.HarmShapeGain_Q14, |
| 188 | sEncCtrl.Tilt_Q14, sEncCtrl.LF_shp_Q14, sEncCtrl.Gains_Q16, sEncCtrl.pitchL, sEncCtrl.Lambda_Q10, sEncCtrl.LTP_scale_Q14 ); |
| 189 | } else { |
| 190 | silk_NSQ( &psEnc->sCmn, &psEnc->sCmn.sNSQ, &psEnc->sCmn.indices, xfw_Q3, psEnc->sCmn.pulses, |
| 191 | sEncCtrl.PredCoef_Q12[ 0 ], sEncCtrl.LTPCoef_Q14, sEncCtrl.AR2_Q13, sEncCtrl.HarmShapeGain_Q14, |
| 192 | sEncCtrl.Tilt_Q14, sEncCtrl.LF_shp_Q14, sEncCtrl.Gains_Q16, sEncCtrl.pitchL, sEncCtrl.Lambda_Q10, sEncCtrl.LTP_scale_Q14 ); |
| 193 | } |
| 194 | |
| 195 | /****************************************/ |
| 196 | /* Encode Parameters */ |
| 197 | /****************************************/ |
| 198 | silk_encode_indices( &psEnc->sCmn, psRangeEnc, psEnc->sCmn.nFramesEncoded, 0, condCoding ); |
| 199 | |
| 200 | /****************************************/ |
| 201 | /* Encode Excitation Signal */ |
| 202 | /****************************************/ |
| 203 | silk_encode_pulses( psRangeEnc, psEnc->sCmn.indices.signalType, psEnc->sCmn.indices.quantOffsetType, |
| 204 | psEnc->sCmn.pulses, psEnc->sCmn.frame_length ); |
| 205 | |
| 206 | nBits = ec_tell( psRangeEnc ); |
| 207 | |
| 208 | if( useCBR == 0 && iter == 0 && nBits <= maxBits ) { |
| 209 | break; |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | if( iter == maxIter ) { |
| 214 | if( found_lower && ( gainsID == gainsID_lower || nBits > maxBits ) ) { |
| 215 | /* Restore output state from earlier iteration that did meet the bitrate budget */ |
| 216 | silk_memcpy( psRangeEnc, &sRangeEnc_copy2, sizeof( ec_enc ) ); |
| 217 | silk_assert( sRangeEnc_copy2.offs <= 1275 ); |
| 218 | silk_memcpy( psRangeEnc->buf, ec_buf_copy, sRangeEnc_copy2.offs ); |
| 219 | silk_memcpy( &psEnc->sCmn.sNSQ, &sNSQ_copy2, sizeof( silk_nsq_state ) ); |
| 220 | psEnc->sShape.LastGainIndex = LastGainIndex_copy2; |
| 221 | } |
| 222 | break; |
| 223 | } |
| 224 | |
| 225 | if( nBits > maxBits ) { |
| 226 | if( found_lower == 0 && iter >= 2 ) { |
| 227 | /* Adjust the quantizer's rate/distortion tradeoff and discard previous "upper" results */ |
| 228 | sEncCtrl.Lambda_Q10 = silk_ADD_RSHIFT32( sEncCtrl.Lambda_Q10, sEncCtrl.Lambda_Q10, 1 ); |
| 229 | found_upper = 0; |
| 230 | gainsID_upper = -1; |
| 231 | } else { |
| 232 | found_upper = 1; |
| 233 | nBits_upper = nBits; |
| 234 | gainMult_upper = gainMult_Q8; |
| 235 | gainsID_upper = gainsID; |
| 236 | } |
| 237 | } else if( nBits < maxBits - 5 ) { |
| 238 | found_lower = 1; |
| 239 | nBits_lower = nBits; |
| 240 | gainMult_lower = gainMult_Q8; |
| 241 | if( gainsID != gainsID_lower ) { |
| 242 | gainsID_lower = gainsID; |
| 243 | /* Copy part of the output state */ |
| 244 | silk_memcpy( &sRangeEnc_copy2, psRangeEnc, sizeof( ec_enc ) ); |
| 245 | silk_assert( psRangeEnc->offs <= 1275 ); |
| 246 | silk_memcpy( ec_buf_copy, psRangeEnc->buf, psRangeEnc->offs ); |
| 247 | silk_memcpy( &sNSQ_copy2, &psEnc->sCmn.sNSQ, sizeof( silk_nsq_state ) ); |
| 248 | LastGainIndex_copy2 = psEnc->sShape.LastGainIndex; |
| 249 | } |
| 250 | } else { |
| 251 | /* Within 5 bits of budget: close enough */ |
| 252 | break; |
| 253 | } |
| 254 | |
| 255 | if( ( found_lower & found_upper ) == 0 ) { |
| 256 | /* Adjust gain according to high-rate rate/distortion curve */ |
| 257 | opus_int32 gain_factor_Q16; |
| 258 | gain_factor_Q16 = silk_log2lin( silk_LSHIFT( nBits - maxBits, 7 ) / psEnc->sCmn.frame_length + SILK_FIX_CONST( 16, 7 ) ); |
| 259 | gain_factor_Q16 = silk_min_32( gain_factor_Q16, SILK_FIX_CONST( 2, 16 ) ); |
| 260 | if( nBits > maxBits ) { |
| 261 | gain_factor_Q16 = silk_max_32( gain_factor_Q16, SILK_FIX_CONST( 1.3, 16 ) ); |
| 262 | } |
| 263 | gainMult_Q8 = silk_SMULWB( gain_factor_Q16, gainMult_Q8 ); |
| 264 | } else { |
| 265 | /* Adjust gain by interpolating */ |
| 266 | gainMult_Q8 = gainMult_lower + silk_DIV32_16( silk_MUL( gainMult_upper - gainMult_lower, maxBits - nBits_lower ), nBits_upper - nBits_lower ); |
| 267 | /* New gain multplier must be between 25% and 75% of old range (note that gainMult_upper < gainMult_lower) */ |
| 268 | if( gainMult_Q8 > silk_ADD_RSHIFT32( gainMult_lower, gainMult_upper - gainMult_lower, 2 ) ) { |
| 269 | gainMult_Q8 = silk_ADD_RSHIFT32( gainMult_lower, gainMult_upper - gainMult_lower, 2 ); |
| 270 | } else |
| 271 | if( gainMult_Q8 < silk_SUB_RSHIFT32( gainMult_upper, gainMult_upper - gainMult_lower, 2 ) ) { |
| 272 | gainMult_Q8 = silk_SUB_RSHIFT32( gainMult_upper, gainMult_upper - gainMult_lower, 2 ); |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | for( i = 0; i < psEnc->sCmn.nb_subfr; i++ ) { |
| 277 | sEncCtrl.Gains_Q16[ i ] = silk_LSHIFT_SAT32( silk_SMULWB( sEncCtrl.GainsUnq_Q16[ i ], gainMult_Q8 ), 8 ); |
| 278 | } |
| 279 | |
| 280 | /* Quantize gains */ |
| 281 | psEnc->sShape.LastGainIndex = sEncCtrl.lastGainIndexPrev; |
| 282 | silk_gains_quant( psEnc->sCmn.indices.GainsIndices, sEncCtrl.Gains_Q16, |
| 283 | &psEnc->sShape.LastGainIndex, condCoding == CODE_CONDITIONALLY, psEnc->sCmn.nb_subfr ); |
| 284 | |
| 285 | /* Unique identifier of gains vector */ |
| 286 | gainsID = silk_gains_ID( psEnc->sCmn.indices.GainsIndices, psEnc->sCmn.nb_subfr ); |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | /* Update input buffer */ |
| 291 | silk_memmove( psEnc->x_buf, &psEnc->x_buf[ psEnc->sCmn.frame_length ], |
| 292 | ( psEnc->sCmn.ltp_mem_length + LA_SHAPE_MS * psEnc->sCmn.fs_kHz ) * sizeof( opus_int16 ) ); |
| 293 | |
| 294 | /* Parameters needed for next frame */ |
| 295 | psEnc->sCmn.prevLag = sEncCtrl.pitchL[ psEnc->sCmn.nb_subfr - 1 ]; |
| 296 | psEnc->sCmn.prevSignalType = psEnc->sCmn.indices.signalType; |
| 297 | |
| 298 | /* Exit without entropy coding */ |
| 299 | if( psEnc->sCmn.prefillFlag ) { |
| 300 | /* No payload */ |
| 301 | *pnBytesOut = 0; |
| 302 | return ret; |
| 303 | } |
| 304 | |
| 305 | /****************************************/ |
| 306 | /* Finalize payload */ |
| 307 | /****************************************/ |
| 308 | psEnc->sCmn.first_frame_after_reset = 0; |
| 309 | /* Payload size */ |
| 310 | *pnBytesOut = silk_RSHIFT( ec_tell( psRangeEnc ) + 7, 3 ); |
| 311 | |
| 312 | return ret; |
| 313 | } |
| 314 | |
| 315 | /* Low-Bitrate Redundancy (LBRR) encoding. Reuse all parameters but encode excitation at lower bitrate */ |
| 316 | static inline void silk_LBRR_encode_FIX( |
| 317 | silk_encoder_state_FIX *psEnc, /* I/O Pointer to Silk FIX encoder state */ |
| 318 | silk_encoder_control_FIX *psEncCtrl, /* I/O Pointer to Silk FIX encoder control struct */ |
| 319 | const opus_int32 xfw_Q3[], /* I Input signal */ |
| 320 | opus_int condCoding /* I The type of conditional coding used so far for this frame */ |
| 321 | ) |
| 322 | { |
| 323 | opus_int32 TempGains_Q16[ MAX_NB_SUBFR ]; |
| 324 | SideInfoIndices *psIndices_LBRR = &psEnc->sCmn.indices_LBRR[ psEnc->sCmn.nFramesEncoded ]; |
| 325 | silk_nsq_state sNSQ_LBRR; |
| 326 | |
| 327 | /*******************************************/ |
| 328 | /* Control use of inband LBRR */ |
| 329 | /*******************************************/ |
| 330 | if( psEnc->sCmn.LBRR_enabled && psEnc->sCmn.speech_activity_Q8 > SILK_FIX_CONST( LBRR_SPEECH_ACTIVITY_THRES, 8 ) ) { |
| 331 | psEnc->sCmn.LBRR_flags[ psEnc->sCmn.nFramesEncoded ] = 1; |
| 332 | |
| 333 | /* Copy noise shaping quantizer state and quantization indices from regular encoding */ |
| 334 | silk_memcpy( &sNSQ_LBRR, &psEnc->sCmn.sNSQ, sizeof( silk_nsq_state ) ); |
| 335 | silk_memcpy( psIndices_LBRR, &psEnc->sCmn.indices, sizeof( SideInfoIndices ) ); |
| 336 | |
| 337 | /* Save original gains */ |
| 338 | silk_memcpy( TempGains_Q16, psEncCtrl->Gains_Q16, psEnc->sCmn.nb_subfr * sizeof( opus_int32 ) ); |
| 339 | |
| 340 | if( psEnc->sCmn.nFramesEncoded == 0 || psEnc->sCmn.LBRR_flags[ psEnc->sCmn.nFramesEncoded - 1 ] == 0 ) { |
| 341 | /* First frame in packet or previous frame not LBRR coded */ |
| 342 | psEnc->sCmn.LBRRprevLastGainIndex = psEnc->sShape.LastGainIndex; |
| 343 | |
| 344 | /* Increase Gains to get target LBRR rate */ |
| 345 | psIndices_LBRR->GainsIndices[ 0 ] = psIndices_LBRR->GainsIndices[ 0 ] + psEnc->sCmn.LBRR_GainIncreases; |
| 346 | psIndices_LBRR->GainsIndices[ 0 ] = silk_min_int( psIndices_LBRR->GainsIndices[ 0 ], N_LEVELS_QGAIN - 1 ); |
| 347 | } |
| 348 | |
| 349 | /* Decode to get gains in sync with decoder */ |
| 350 | /* Overwrite unquantized gains with quantized gains */ |
| 351 | silk_gains_dequant( psEncCtrl->Gains_Q16, psIndices_LBRR->GainsIndices, |
| 352 | &psEnc->sCmn.LBRRprevLastGainIndex, condCoding == CODE_CONDITIONALLY, psEnc->sCmn.nb_subfr ); |
| 353 | |
| 354 | /*****************************************/ |
| 355 | /* Noise shaping quantization */ |
| 356 | /*****************************************/ |
| 357 | if( psEnc->sCmn.nStatesDelayedDecision > 1 || psEnc->sCmn.warping_Q16 > 0 ) { |
| 358 | silk_NSQ_del_dec( &psEnc->sCmn, &sNSQ_LBRR, psIndices_LBRR, xfw_Q3, |
| 359 | psEnc->sCmn.pulses_LBRR[ psEnc->sCmn.nFramesEncoded ], psEncCtrl->PredCoef_Q12[ 0 ], psEncCtrl->LTPCoef_Q14, |
| 360 | psEncCtrl->AR2_Q13, psEncCtrl->HarmShapeGain_Q14, psEncCtrl->Tilt_Q14, psEncCtrl->LF_shp_Q14, |
| 361 | psEncCtrl->Gains_Q16, psEncCtrl->pitchL, psEncCtrl->Lambda_Q10, psEncCtrl->LTP_scale_Q14 ); |
| 362 | } else { |
| 363 | silk_NSQ( &psEnc->sCmn, &sNSQ_LBRR, psIndices_LBRR, xfw_Q3, |
| 364 | psEnc->sCmn.pulses_LBRR[ psEnc->sCmn.nFramesEncoded ], psEncCtrl->PredCoef_Q12[ 0 ], psEncCtrl->LTPCoef_Q14, |
| 365 | psEncCtrl->AR2_Q13, psEncCtrl->HarmShapeGain_Q14, psEncCtrl->Tilt_Q14, psEncCtrl->LF_shp_Q14, |
| 366 | psEncCtrl->Gains_Q16, psEncCtrl->pitchL, psEncCtrl->Lambda_Q10, psEncCtrl->LTP_scale_Q14 ); |
| 367 | } |
| 368 | |
| 369 | /* Restore original gains */ |
| 370 | silk_memcpy( psEncCtrl->Gains_Q16, TempGains_Q16, psEnc->sCmn.nb_subfr * sizeof( opus_int32 ) ); |
| 371 | } |
| 372 | } |