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annotate src/opus-1.3/silk/control_codec.c @ 73:02caadb7509e

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Rebuild with --disable-stack-protector for mingw32
author Chris Cannam
date Fri, 25 Jan 2019 14:31:07 +0000
parents 7aeed7906520
children
rev   line source
Chris@69 1 /***********************************************************************
Chris@69 2 Copyright (c) 2006-2011, Skype Limited. All rights reserved.
Chris@69 3 Redistribution and use in source and binary forms, with or without
Chris@69 4 modification, are permitted provided that the following conditions
Chris@69 5 are met:
Chris@69 6 - Redistributions of source code must retain the above copyright notice,
Chris@69 7 this list of conditions and the following disclaimer.
Chris@69 8 - Redistributions in binary form must reproduce the above copyright
Chris@69 9 notice, this list of conditions and the following disclaimer in the
Chris@69 10 documentation and/or other materials provided with the distribution.
Chris@69 11 - Neither the name of Internet Society, IETF or IETF Trust, nor the
Chris@69 12 names of specific contributors, may be used to endorse or promote
Chris@69 13 products derived from this software without specific prior written
Chris@69 14 permission.
Chris@69 15 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
Chris@69 16 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
Chris@69 17 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
Chris@69 18 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
Chris@69 19 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
Chris@69 20 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
Chris@69 21 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
Chris@69 22 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
Chris@69 23 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
Chris@69 24 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
Chris@69 25 POSSIBILITY OF SUCH DAMAGE.
Chris@69 26 ***********************************************************************/
Chris@69 27
Chris@69 28 #ifdef HAVE_CONFIG_H
Chris@69 29 #include "config.h"
Chris@69 30 #endif
Chris@69 31 #ifdef FIXED_POINT
Chris@69 32 #include "main_FIX.h"
Chris@69 33 #define silk_encoder_state_Fxx silk_encoder_state_FIX
Chris@69 34 #else
Chris@69 35 #include "main_FLP.h"
Chris@69 36 #define silk_encoder_state_Fxx silk_encoder_state_FLP
Chris@69 37 #endif
Chris@69 38 #include "stack_alloc.h"
Chris@69 39 #include "tuning_parameters.h"
Chris@69 40 #include "pitch_est_defines.h"
Chris@69 41
Chris@69 42 static opus_int silk_setup_resamplers(
Chris@69 43 silk_encoder_state_Fxx *psEnc, /* I/O */
Chris@69 44 opus_int fs_kHz /* I */
Chris@69 45 );
Chris@69 46
Chris@69 47 static opus_int silk_setup_fs(
Chris@69 48 silk_encoder_state_Fxx *psEnc, /* I/O */
Chris@69 49 opus_int fs_kHz, /* I */
Chris@69 50 opus_int PacketSize_ms /* I */
Chris@69 51 );
Chris@69 52
Chris@69 53 static opus_int silk_setup_complexity(
Chris@69 54 silk_encoder_state *psEncC, /* I/O */
Chris@69 55 opus_int Complexity /* I */
Chris@69 56 );
Chris@69 57
Chris@69 58 static OPUS_INLINE opus_int silk_setup_LBRR(
Chris@69 59 silk_encoder_state *psEncC, /* I/O */
Chris@69 60 const silk_EncControlStruct *encControl /* I */
Chris@69 61 );
Chris@69 62
Chris@69 63
Chris@69 64 /* Control encoder */
Chris@69 65 opus_int silk_control_encoder(
Chris@69 66 silk_encoder_state_Fxx *psEnc, /* I/O Pointer to Silk encoder state */
Chris@69 67 silk_EncControlStruct *encControl, /* I Control structure */
Chris@69 68 const opus_int allow_bw_switch, /* I Flag to allow switching audio bandwidth */
Chris@69 69 const opus_int channelNb, /* I Channel number */
Chris@69 70 const opus_int force_fs_kHz
Chris@69 71 )
Chris@69 72 {
Chris@69 73 opus_int fs_kHz, ret = 0;
Chris@69 74
Chris@69 75 psEnc->sCmn.useDTX = encControl->useDTX;
Chris@69 76 psEnc->sCmn.useCBR = encControl->useCBR;
Chris@69 77 psEnc->sCmn.API_fs_Hz = encControl->API_sampleRate;
Chris@69 78 psEnc->sCmn.maxInternal_fs_Hz = encControl->maxInternalSampleRate;
Chris@69 79 psEnc->sCmn.minInternal_fs_Hz = encControl->minInternalSampleRate;
Chris@69 80 psEnc->sCmn.desiredInternal_fs_Hz = encControl->desiredInternalSampleRate;
Chris@69 81 psEnc->sCmn.useInBandFEC = encControl->useInBandFEC;
Chris@69 82 psEnc->sCmn.nChannelsAPI = encControl->nChannelsAPI;
Chris@69 83 psEnc->sCmn.nChannelsInternal = encControl->nChannelsInternal;
Chris@69 84 psEnc->sCmn.allow_bandwidth_switch = allow_bw_switch;
Chris@69 85 psEnc->sCmn.channelNb = channelNb;
Chris@69 86
Chris@69 87 if( psEnc->sCmn.controlled_since_last_payload != 0 && psEnc->sCmn.prefillFlag == 0 ) {
Chris@69 88 if( psEnc->sCmn.API_fs_Hz != psEnc->sCmn.prev_API_fs_Hz && psEnc->sCmn.fs_kHz > 0 ) {
Chris@69 89 /* Change in API sampling rate in the middle of encoding a packet */
Chris@69 90 ret += silk_setup_resamplers( psEnc, psEnc->sCmn.fs_kHz );
Chris@69 91 }
Chris@69 92 return ret;
Chris@69 93 }
Chris@69 94
Chris@69 95 /* Beyond this point we know that there are no previously coded frames in the payload buffer */
Chris@69 96
Chris@69 97 /********************************************/
Chris@69 98 /* Determine internal sampling rate */
Chris@69 99 /********************************************/
Chris@69 100 fs_kHz = silk_control_audio_bandwidth( &psEnc->sCmn, encControl );
Chris@69 101 if( force_fs_kHz ) {
Chris@69 102 fs_kHz = force_fs_kHz;
Chris@69 103 }
Chris@69 104 /********************************************/
Chris@69 105 /* Prepare resampler and buffered data */
Chris@69 106 /********************************************/
Chris@69 107 ret += silk_setup_resamplers( psEnc, fs_kHz );
Chris@69 108
Chris@69 109 /********************************************/
Chris@69 110 /* Set internal sampling frequency */
Chris@69 111 /********************************************/
Chris@69 112 ret += silk_setup_fs( psEnc, fs_kHz, encControl->payloadSize_ms );
Chris@69 113
Chris@69 114 /********************************************/
Chris@69 115 /* Set encoding complexity */
Chris@69 116 /********************************************/
Chris@69 117 ret += silk_setup_complexity( &psEnc->sCmn, encControl->complexity );
Chris@69 118
Chris@69 119 /********************************************/
Chris@69 120 /* Set packet loss rate measured by farend */
Chris@69 121 /********************************************/
Chris@69 122 psEnc->sCmn.PacketLoss_perc = encControl->packetLossPercentage;
Chris@69 123
Chris@69 124 /********************************************/
Chris@69 125 /* Set LBRR usage */
Chris@69 126 /********************************************/
Chris@69 127 ret += silk_setup_LBRR( &psEnc->sCmn, encControl );
Chris@69 128
Chris@69 129 psEnc->sCmn.controlled_since_last_payload = 1;
Chris@69 130
Chris@69 131 return ret;
Chris@69 132 }
Chris@69 133
Chris@69 134 static opus_int silk_setup_resamplers(
Chris@69 135 silk_encoder_state_Fxx *psEnc, /* I/O */
Chris@69 136 opus_int fs_kHz /* I */
Chris@69 137 )
Chris@69 138 {
Chris@69 139 opus_int ret = SILK_NO_ERROR;
Chris@69 140 SAVE_STACK;
Chris@69 141
Chris@69 142 if( psEnc->sCmn.fs_kHz != fs_kHz || psEnc->sCmn.prev_API_fs_Hz != psEnc->sCmn.API_fs_Hz )
Chris@69 143 {
Chris@69 144 if( psEnc->sCmn.fs_kHz == 0 ) {
Chris@69 145 /* Initialize the resampler for enc_API.c preparing resampling from API_fs_Hz to fs_kHz */
Chris@69 146 ret += silk_resampler_init( &psEnc->sCmn.resampler_state, psEnc->sCmn.API_fs_Hz, fs_kHz * 1000, 1 );
Chris@69 147 } else {
Chris@69 148 VARDECL( opus_int16, x_buf_API_fs_Hz );
Chris@69 149 VARDECL( silk_resampler_state_struct, temp_resampler_state );
Chris@69 150 #ifdef FIXED_POINT
Chris@69 151 opus_int16 *x_bufFIX = psEnc->x_buf;
Chris@69 152 #else
Chris@69 153 VARDECL( opus_int16, x_bufFIX );
Chris@69 154 opus_int32 new_buf_samples;
Chris@69 155 #endif
Chris@69 156 opus_int32 api_buf_samples;
Chris@69 157 opus_int32 old_buf_samples;
Chris@69 158 opus_int32 buf_length_ms;
Chris@69 159
Chris@69 160 buf_length_ms = silk_LSHIFT( psEnc->sCmn.nb_subfr * 5, 1 ) + LA_SHAPE_MS;
Chris@69 161 old_buf_samples = buf_length_ms * psEnc->sCmn.fs_kHz;
Chris@69 162
Chris@69 163 #ifndef FIXED_POINT
Chris@69 164 new_buf_samples = buf_length_ms * fs_kHz;
Chris@69 165 ALLOC( x_bufFIX, silk_max( old_buf_samples, new_buf_samples ),
Chris@69 166 opus_int16 );
Chris@69 167 silk_float2short_array( x_bufFIX, psEnc->x_buf, old_buf_samples );
Chris@69 168 #endif
Chris@69 169
Chris@69 170 /* Initialize resampler for temporary resampling of x_buf data to API_fs_Hz */
Chris@69 171 ALLOC( temp_resampler_state, 1, silk_resampler_state_struct );
Chris@69 172 ret += silk_resampler_init( temp_resampler_state, silk_SMULBB( psEnc->sCmn.fs_kHz, 1000 ), psEnc->sCmn.API_fs_Hz, 0 );
Chris@69 173
Chris@69 174 /* Calculate number of samples to temporarily upsample */
Chris@69 175 api_buf_samples = buf_length_ms * silk_DIV32_16( psEnc->sCmn.API_fs_Hz, 1000 );
Chris@69 176
Chris@69 177 /* Temporary resampling of x_buf data to API_fs_Hz */
Chris@69 178 ALLOC( x_buf_API_fs_Hz, api_buf_samples, opus_int16 );
Chris@69 179 ret += silk_resampler( temp_resampler_state, x_buf_API_fs_Hz, x_bufFIX, old_buf_samples );
Chris@69 180
Chris@69 181 /* Initialize the resampler for enc_API.c preparing resampling from API_fs_Hz to fs_kHz */
Chris@69 182 ret += silk_resampler_init( &psEnc->sCmn.resampler_state, psEnc->sCmn.API_fs_Hz, silk_SMULBB( fs_kHz, 1000 ), 1 );
Chris@69 183
Chris@69 184 /* Correct resampler state by resampling buffered data from API_fs_Hz to fs_kHz */
Chris@69 185 ret += silk_resampler( &psEnc->sCmn.resampler_state, x_bufFIX, x_buf_API_fs_Hz, api_buf_samples );
Chris@69 186
Chris@69 187 #ifndef FIXED_POINT
Chris@69 188 silk_short2float_array( psEnc->x_buf, x_bufFIX, new_buf_samples);
Chris@69 189 #endif
Chris@69 190 }
Chris@69 191 }
Chris@69 192
Chris@69 193 psEnc->sCmn.prev_API_fs_Hz = psEnc->sCmn.API_fs_Hz;
Chris@69 194
Chris@69 195 RESTORE_STACK;
Chris@69 196 return ret;
Chris@69 197 }
Chris@69 198
Chris@69 199 static opus_int silk_setup_fs(
Chris@69 200 silk_encoder_state_Fxx *psEnc, /* I/O */
Chris@69 201 opus_int fs_kHz, /* I */
Chris@69 202 opus_int PacketSize_ms /* I */
Chris@69 203 )
Chris@69 204 {
Chris@69 205 opus_int ret = SILK_NO_ERROR;
Chris@69 206
Chris@69 207 /* Set packet size */
Chris@69 208 if( PacketSize_ms != psEnc->sCmn.PacketSize_ms ) {
Chris@69 209 if( ( PacketSize_ms != 10 ) &&
Chris@69 210 ( PacketSize_ms != 20 ) &&
Chris@69 211 ( PacketSize_ms != 40 ) &&
Chris@69 212 ( PacketSize_ms != 60 ) ) {
Chris@69 213 ret = SILK_ENC_PACKET_SIZE_NOT_SUPPORTED;
Chris@69 214 }
Chris@69 215 if( PacketSize_ms <= 10 ) {
Chris@69 216 psEnc->sCmn.nFramesPerPacket = 1;
Chris@69 217 psEnc->sCmn.nb_subfr = PacketSize_ms == 10 ? 2 : 1;
Chris@69 218 psEnc->sCmn.frame_length = silk_SMULBB( PacketSize_ms, fs_kHz );
Chris@69 219 psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS_2_SF, fs_kHz );
Chris@69 220 if( psEnc->sCmn.fs_kHz == 8 ) {
Chris@69 221 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_NB_iCDF;
Chris@69 222 } else {
Chris@69 223 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_iCDF;
Chris@69 224 }
Chris@69 225 } else {
Chris@69 226 psEnc->sCmn.nFramesPerPacket = silk_DIV32_16( PacketSize_ms, MAX_FRAME_LENGTH_MS );
Chris@69 227 psEnc->sCmn.nb_subfr = MAX_NB_SUBFR;
Chris@69 228 psEnc->sCmn.frame_length = silk_SMULBB( 20, fs_kHz );
Chris@69 229 psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS, fs_kHz );
Chris@69 230 if( psEnc->sCmn.fs_kHz == 8 ) {
Chris@69 231 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_NB_iCDF;
Chris@69 232 } else {
Chris@69 233 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_iCDF;
Chris@69 234 }
Chris@69 235 }
Chris@69 236 psEnc->sCmn.PacketSize_ms = PacketSize_ms;
Chris@69 237 psEnc->sCmn.TargetRate_bps = 0; /* trigger new SNR computation */
Chris@69 238 }
Chris@69 239
Chris@69 240 /* Set internal sampling frequency */
Chris@69 241 celt_assert( fs_kHz == 8 || fs_kHz == 12 || fs_kHz == 16 );
Chris@69 242 celt_assert( psEnc->sCmn.nb_subfr == 2 || psEnc->sCmn.nb_subfr == 4 );
Chris@69 243 if( psEnc->sCmn.fs_kHz != fs_kHz ) {
Chris@69 244 /* reset part of the state */
Chris@69 245 silk_memset( &psEnc->sShape, 0, sizeof( psEnc->sShape ) );
Chris@69 246 silk_memset( &psEnc->sCmn.sNSQ, 0, sizeof( psEnc->sCmn.sNSQ ) );
Chris@69 247 silk_memset( psEnc->sCmn.prev_NLSFq_Q15, 0, sizeof( psEnc->sCmn.prev_NLSFq_Q15 ) );
Chris@69 248 silk_memset( &psEnc->sCmn.sLP.In_LP_State, 0, sizeof( psEnc->sCmn.sLP.In_LP_State ) );
Chris@69 249 psEnc->sCmn.inputBufIx = 0;
Chris@69 250 psEnc->sCmn.nFramesEncoded = 0;
Chris@69 251 psEnc->sCmn.TargetRate_bps = 0; /* trigger new SNR computation */
Chris@69 252
Chris@69 253 /* Initialize non-zero parameters */
Chris@69 254 psEnc->sCmn.prevLag = 100;
Chris@69 255 psEnc->sCmn.first_frame_after_reset = 1;
Chris@69 256 psEnc->sShape.LastGainIndex = 10;
Chris@69 257 psEnc->sCmn.sNSQ.lagPrev = 100;
Chris@69 258 psEnc->sCmn.sNSQ.prev_gain_Q16 = 65536;
Chris@69 259 psEnc->sCmn.prevSignalType = TYPE_NO_VOICE_ACTIVITY;
Chris@69 260
Chris@69 261 psEnc->sCmn.fs_kHz = fs_kHz;
Chris@69 262 if( psEnc->sCmn.fs_kHz == 8 ) {
Chris@69 263 if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) {
Chris@69 264 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_NB_iCDF;
Chris@69 265 } else {
Chris@69 266 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_NB_iCDF;
Chris@69 267 }
Chris@69 268 } else {
Chris@69 269 if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) {
Chris@69 270 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_iCDF;
Chris@69 271 } else {
Chris@69 272 psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_iCDF;
Chris@69 273 }
Chris@69 274 }
Chris@69 275 if( psEnc->sCmn.fs_kHz == 8 || psEnc->sCmn.fs_kHz == 12 ) {
Chris@69 276 psEnc->sCmn.predictLPCOrder = MIN_LPC_ORDER;
Chris@69 277 psEnc->sCmn.psNLSF_CB = &silk_NLSF_CB_NB_MB;
Chris@69 278 } else {
Chris@69 279 psEnc->sCmn.predictLPCOrder = MAX_LPC_ORDER;
Chris@69 280 psEnc->sCmn.psNLSF_CB = &silk_NLSF_CB_WB;
Chris@69 281 }
Chris@69 282 psEnc->sCmn.subfr_length = SUB_FRAME_LENGTH_MS * fs_kHz;
Chris@69 283 psEnc->sCmn.frame_length = silk_SMULBB( psEnc->sCmn.subfr_length, psEnc->sCmn.nb_subfr );
Chris@69 284 psEnc->sCmn.ltp_mem_length = silk_SMULBB( LTP_MEM_LENGTH_MS, fs_kHz );
Chris@69 285 psEnc->sCmn.la_pitch = silk_SMULBB( LA_PITCH_MS, fs_kHz );
Chris@69 286 psEnc->sCmn.max_pitch_lag = silk_SMULBB( 18, fs_kHz );
Chris@69 287 if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) {
Chris@69 288 psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS, fs_kHz );
Chris@69 289 } else {
Chris@69 290 psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS_2_SF, fs_kHz );
Chris@69 291 }
Chris@69 292 if( psEnc->sCmn.fs_kHz == 16 ) {
Chris@69 293 psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform8_iCDF;
Chris@69 294 } else if( psEnc->sCmn.fs_kHz == 12 ) {
Chris@69 295 psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform6_iCDF;
Chris@69 296 } else {
Chris@69 297 psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform4_iCDF;
Chris@69 298 }
Chris@69 299 }
Chris@69 300
Chris@69 301 /* Check that settings are valid */
Chris@69 302 celt_assert( ( psEnc->sCmn.subfr_length * psEnc->sCmn.nb_subfr ) == psEnc->sCmn.frame_length );
Chris@69 303
Chris@69 304 return ret;
Chris@69 305 }
Chris@69 306
Chris@69 307 static opus_int silk_setup_complexity(
Chris@69 308 silk_encoder_state *psEncC, /* I/O */
Chris@69 309 opus_int Complexity /* I */
Chris@69 310 )
Chris@69 311 {
Chris@69 312 opus_int ret = 0;
Chris@69 313
Chris@69 314 /* Set encoding complexity */
Chris@69 315 celt_assert( Complexity >= 0 && Complexity <= 10 );
Chris@69 316 if( Complexity < 1 ) {
Chris@69 317 psEncC->pitchEstimationComplexity = SILK_PE_MIN_COMPLEX;
Chris@69 318 psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.8, 16 );
Chris@69 319 psEncC->pitchEstimationLPCOrder = 6;
Chris@69 320 psEncC->shapingLPCOrder = 12;
Chris@69 321 psEncC->la_shape = 3 * psEncC->fs_kHz;
Chris@69 322 psEncC->nStatesDelayedDecision = 1;
Chris@69 323 psEncC->useInterpolatedNLSFs = 0;
Chris@69 324 psEncC->NLSF_MSVQ_Survivors = 2;
Chris@69 325 psEncC->warping_Q16 = 0;
Chris@69 326 } else if( Complexity < 2 ) {
Chris@69 327 psEncC->pitchEstimationComplexity = SILK_PE_MID_COMPLEX;
Chris@69 328 psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.76, 16 );
Chris@69 329 psEncC->pitchEstimationLPCOrder = 8;
Chris@69 330 psEncC->shapingLPCOrder = 14;
Chris@69 331 psEncC->la_shape = 5 * psEncC->fs_kHz;
Chris@69 332 psEncC->nStatesDelayedDecision = 1;
Chris@69 333 psEncC->useInterpolatedNLSFs = 0;
Chris@69 334 psEncC->NLSF_MSVQ_Survivors = 3;
Chris@69 335 psEncC->warping_Q16 = 0;
Chris@69 336 } else if( Complexity < 3 ) {
Chris@69 337 psEncC->pitchEstimationComplexity = SILK_PE_MIN_COMPLEX;
Chris@69 338 psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.8, 16 );
Chris@69 339 psEncC->pitchEstimationLPCOrder = 6;
Chris@69 340 psEncC->shapingLPCOrder = 12;
Chris@69 341 psEncC->la_shape = 3 * psEncC->fs_kHz;
Chris@69 342 psEncC->nStatesDelayedDecision = 2;
Chris@69 343 psEncC->useInterpolatedNLSFs = 0;
Chris@69 344 psEncC->NLSF_MSVQ_Survivors = 2;
Chris@69 345 psEncC->warping_Q16 = 0;
Chris@69 346 } else if( Complexity < 4 ) {
Chris@69 347 psEncC->pitchEstimationComplexity = SILK_PE_MID_COMPLEX;
Chris@69 348 psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.76, 16 );
Chris@69 349 psEncC->pitchEstimationLPCOrder = 8;
Chris@69 350 psEncC->shapingLPCOrder = 14;
Chris@69 351 psEncC->la_shape = 5 * psEncC->fs_kHz;
Chris@69 352 psEncC->nStatesDelayedDecision = 2;
Chris@69 353 psEncC->useInterpolatedNLSFs = 0;
Chris@69 354 psEncC->NLSF_MSVQ_Survivors = 4;
Chris@69 355 psEncC->warping_Q16 = 0;
Chris@69 356 } else if( Complexity < 6 ) {
Chris@69 357 psEncC->pitchEstimationComplexity = SILK_PE_MID_COMPLEX;
Chris@69 358 psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.74, 16 );
Chris@69 359 psEncC->pitchEstimationLPCOrder = 10;
Chris@69 360 psEncC->shapingLPCOrder = 16;
Chris@69 361 psEncC->la_shape = 5 * psEncC->fs_kHz;
Chris@69 362 psEncC->nStatesDelayedDecision = 2;
Chris@69 363 psEncC->useInterpolatedNLSFs = 1;
Chris@69 364 psEncC->NLSF_MSVQ_Survivors = 6;
Chris@69 365 psEncC->warping_Q16 = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 );
Chris@69 366 } else if( Complexity < 8 ) {
Chris@69 367 psEncC->pitchEstimationComplexity = SILK_PE_MID_COMPLEX;
Chris@69 368 psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.72, 16 );
Chris@69 369 psEncC->pitchEstimationLPCOrder = 12;
Chris@69 370 psEncC->shapingLPCOrder = 20;
Chris@69 371 psEncC->la_shape = 5 * psEncC->fs_kHz;
Chris@69 372 psEncC->nStatesDelayedDecision = 3;
Chris@69 373 psEncC->useInterpolatedNLSFs = 1;
Chris@69 374 psEncC->NLSF_MSVQ_Survivors = 8;
Chris@69 375 psEncC->warping_Q16 = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 );
Chris@69 376 } else {
Chris@69 377 psEncC->pitchEstimationComplexity = SILK_PE_MAX_COMPLEX;
Chris@69 378 psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.7, 16 );
Chris@69 379 psEncC->pitchEstimationLPCOrder = 16;
Chris@69 380 psEncC->shapingLPCOrder = 24;
Chris@69 381 psEncC->la_shape = 5 * psEncC->fs_kHz;
Chris@69 382 psEncC->nStatesDelayedDecision = MAX_DEL_DEC_STATES;
Chris@69 383 psEncC->useInterpolatedNLSFs = 1;
Chris@69 384 psEncC->NLSF_MSVQ_Survivors = 16;
Chris@69 385 psEncC->warping_Q16 = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 );
Chris@69 386 }
Chris@69 387
Chris@69 388 /* Do not allow higher pitch estimation LPC order than predict LPC order */
Chris@69 389 psEncC->pitchEstimationLPCOrder = silk_min_int( psEncC->pitchEstimationLPCOrder, psEncC->predictLPCOrder );
Chris@69 390 psEncC->shapeWinLength = SUB_FRAME_LENGTH_MS * psEncC->fs_kHz + 2 * psEncC->la_shape;
Chris@69 391 psEncC->Complexity = Complexity;
Chris@69 392
Chris@69 393 celt_assert( psEncC->pitchEstimationLPCOrder <= MAX_FIND_PITCH_LPC_ORDER );
Chris@69 394 celt_assert( psEncC->shapingLPCOrder <= MAX_SHAPE_LPC_ORDER );
Chris@69 395 celt_assert( psEncC->nStatesDelayedDecision <= MAX_DEL_DEC_STATES );
Chris@69 396 celt_assert( psEncC->warping_Q16 <= 32767 );
Chris@69 397 celt_assert( psEncC->la_shape <= LA_SHAPE_MAX );
Chris@69 398 celt_assert( psEncC->shapeWinLength <= SHAPE_LPC_WIN_MAX );
Chris@69 399
Chris@69 400 return ret;
Chris@69 401 }
Chris@69 402
Chris@69 403 static OPUS_INLINE opus_int silk_setup_LBRR(
Chris@69 404 silk_encoder_state *psEncC, /* I/O */
Chris@69 405 const silk_EncControlStruct *encControl /* I */
Chris@69 406 )
Chris@69 407 {
Chris@69 408 opus_int LBRR_in_previous_packet, ret = SILK_NO_ERROR;
Chris@69 409
Chris@69 410 LBRR_in_previous_packet = psEncC->LBRR_enabled;
Chris@69 411 psEncC->LBRR_enabled = encControl->LBRR_coded;
Chris@69 412 if( psEncC->LBRR_enabled ) {
Chris@69 413 /* Set gain increase for coding LBRR excitation */
Chris@69 414 if( LBRR_in_previous_packet == 0 ) {
Chris@69 415 /* Previous packet did not have LBRR, and was therefore coded at a higher bitrate */
Chris@69 416 psEncC->LBRR_GainIncreases = 7;
Chris@69 417 } else {
Chris@69 418 psEncC->LBRR_GainIncreases = silk_max_int( 7 - silk_SMULWB( (opus_int32)psEncC->PacketLoss_perc, SILK_FIX_CONST( 0.4, 16 ) ), 2 );
Chris@69 419 }
Chris@69 420 }
Chris@69 421
Chris@69 422 return ret;
Chris@69 423 }