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 | #ifdef FIXED_POINT |
| 32 | #include "main_FIX.h" |
| 33 | #define silk_encoder_state_Fxx silk_encoder_state_FIX |
| 34 | #else |
| 35 | #include "main_FLP.h" |
| 36 | #define silk_encoder_state_Fxx silk_encoder_state_FLP |
| 37 | #endif |
| 38 | #include "tuning_parameters.h" |
| 39 | #include "pitch_est_defines.h" |
| 40 | |
| 41 | static opus_int silk_setup_resamplers( |
| 42 | silk_encoder_state_Fxx *psEnc, /* I/O */ |
| 43 | opus_int fs_kHz /* I */ |
| 44 | ); |
| 45 | |
| 46 | static opus_int silk_setup_fs( |
| 47 | silk_encoder_state_Fxx *psEnc, /* I/O */ |
| 48 | opus_int fs_kHz, /* I */ |
| 49 | opus_int PacketSize_ms /* I */ |
| 50 | ); |
| 51 | |
| 52 | static opus_int silk_setup_complexity( |
| 53 | silk_encoder_state *psEncC, /* I/O */ |
| 54 | opus_int Complexity /* I */ |
| 55 | ); |
| 56 | |
| 57 | static inline opus_int silk_setup_LBRR( |
| 58 | silk_encoder_state *psEncC, /* I/O */ |
| 59 | const opus_int32 TargetRate_bps /* I */ |
| 60 | ); |
| 61 | |
| 62 | |
| 63 | /* Control encoder */ |
| 64 | opus_int silk_control_encoder( |
| 65 | silk_encoder_state_Fxx *psEnc, /* I/O Pointer to Silk encoder state */ |
| 66 | silk_EncControlStruct *encControl, /* I Control structure */ |
| 67 | const opus_int32 TargetRate_bps, /* I Target max bitrate (bps) */ |
| 68 | const opus_int allow_bw_switch, /* I Flag to allow switching audio bandwidth */ |
| 69 | const opus_int channelNb, /* I Channel number */ |
| 70 | const opus_int force_fs_kHz |
| 71 | ) |
| 72 | { |
| 73 | opus_int fs_kHz, ret = 0; |
| 74 | |
| 75 | psEnc->sCmn.useDTX = encControl->useDTX; |
| 76 | psEnc->sCmn.useCBR = encControl->useCBR; |
| 77 | psEnc->sCmn.API_fs_Hz = encControl->API_sampleRate; |
| 78 | psEnc->sCmn.maxInternal_fs_Hz = encControl->maxInternalSampleRate; |
| 79 | psEnc->sCmn.minInternal_fs_Hz = encControl->minInternalSampleRate; |
| 80 | psEnc->sCmn.desiredInternal_fs_Hz = encControl->desiredInternalSampleRate; |
| 81 | psEnc->sCmn.useInBandFEC = encControl->useInBandFEC; |
| 82 | psEnc->sCmn.nChannelsAPI = encControl->nChannelsAPI; |
| 83 | psEnc->sCmn.nChannelsInternal = encControl->nChannelsInternal; |
| 84 | psEnc->sCmn.allow_bandwidth_switch = allow_bw_switch; |
| 85 | psEnc->sCmn.channelNb = channelNb; |
| 86 | |
| 87 | if( psEnc->sCmn.controlled_since_last_payload != 0 && psEnc->sCmn.prefillFlag == 0 ) { |
| 88 | if( psEnc->sCmn.API_fs_Hz != psEnc->sCmn.prev_API_fs_Hz && psEnc->sCmn.fs_kHz > 0 ) { |
| 89 | /* Change in API sampling rate in the middle of encoding a packet */ |
| 90 | ret += silk_setup_resamplers( psEnc, psEnc->sCmn.fs_kHz ); |
| 91 | } |
| 92 | return ret; |
| 93 | } |
| 94 | |
| 95 | /* Beyond this point we know that there are no previously coded frames in the payload buffer */ |
| 96 | |
| 97 | /********************************************/ |
| 98 | /* Determine internal sampling rate */ |
| 99 | /********************************************/ |
| 100 | fs_kHz = silk_control_audio_bandwidth( &psEnc->sCmn, encControl ); |
| 101 | if( force_fs_kHz ) { |
| 102 | fs_kHz = force_fs_kHz; |
| 103 | } |
| 104 | /********************************************/ |
| 105 | /* Prepare resampler and buffered data */ |
| 106 | /********************************************/ |
| 107 | ret += silk_setup_resamplers( psEnc, fs_kHz ); |
| 108 | |
| 109 | /********************************************/ |
| 110 | /* Set internal sampling frequency */ |
| 111 | /********************************************/ |
| 112 | ret += silk_setup_fs( psEnc, fs_kHz, encControl->payloadSize_ms ); |
| 113 | |
| 114 | /********************************************/ |
| 115 | /* Set encoding complexity */ |
| 116 | /********************************************/ |
| 117 | ret += silk_setup_complexity( &psEnc->sCmn, encControl->complexity ); |
| 118 | |
| 119 | /********************************************/ |
| 120 | /* Set packet loss rate measured by farend */ |
| 121 | /********************************************/ |
| 122 | psEnc->sCmn.PacketLoss_perc = encControl->packetLossPercentage; |
| 123 | |
| 124 | /********************************************/ |
| 125 | /* Set LBRR usage */ |
| 126 | /********************************************/ |
| 127 | ret += silk_setup_LBRR( &psEnc->sCmn, TargetRate_bps ); |
| 128 | |
| 129 | psEnc->sCmn.controlled_since_last_payload = 1; |
| 130 | |
| 131 | return ret; |
| 132 | } |
| 133 | |
| 134 | static opus_int silk_setup_resamplers( |
| 135 | silk_encoder_state_Fxx *psEnc, /* I/O */ |
| 136 | opus_int fs_kHz /* I */ |
| 137 | ) |
| 138 | { |
| 139 | opus_int ret = SILK_NO_ERROR; |
| 140 | opus_int32 nSamples_temp; |
| 141 | |
| 142 | if( psEnc->sCmn.fs_kHz != fs_kHz || psEnc->sCmn.prev_API_fs_Hz != psEnc->sCmn.API_fs_Hz ) |
| 143 | { |
| 144 | if( psEnc->sCmn.fs_kHz == 0 ) { |
| 145 | /* Initialize the resampler for enc_API.c preparing resampling from API_fs_Hz to fs_kHz */ |
| 146 | ret += silk_resampler_init( &psEnc->sCmn.resampler_state, psEnc->sCmn.API_fs_Hz, fs_kHz * 1000, 1 ); |
| 147 | } else { |
| 148 | /* Allocate worst case space for temporary upsampling, 8 to 48 kHz, so a factor 6 */ |
| 149 | opus_int16 x_buf_API_fs_Hz[ ( 2 * MAX_FRAME_LENGTH_MS + LA_SHAPE_MS ) * MAX_API_FS_KHZ ]; |
| 150 | silk_resampler_state_struct temp_resampler_state; |
| 151 | #ifdef FIXED_POINT |
| 152 | opus_int16 *x_bufFIX = psEnc->x_buf; |
| 153 | #else |
| 154 | opus_int16 x_bufFIX[ 2 * MAX_FRAME_LENGTH + LA_SHAPE_MAX ]; |
| 155 | #endif |
| 156 | |
| 157 | nSamples_temp = silk_LSHIFT( psEnc->sCmn.frame_length, 1 ) + LA_SHAPE_MS * psEnc->sCmn.fs_kHz; |
| 158 | |
| 159 | #ifndef FIXED_POINT |
| 160 | silk_float2short_array( x_bufFIX, psEnc->x_buf, nSamples_temp ); |
| 161 | #endif |
| 162 | |
| 163 | /* Initialize resampler for temporary resampling of x_buf data to API_fs_Hz */ |
| 164 | ret += silk_resampler_init( &temp_resampler_state, silk_SMULBB( psEnc->sCmn.fs_kHz, 1000 ), psEnc->sCmn.API_fs_Hz, 0 ); |
| 165 | |
| 166 | /* Temporary resampling of x_buf data to API_fs_Hz */ |
| 167 | ret += silk_resampler( &temp_resampler_state, x_buf_API_fs_Hz, x_bufFIX, nSamples_temp ); |
| 168 | |
| 169 | /* Calculate number of samples that has been temporarily upsampled */ |
| 170 | nSamples_temp = silk_DIV32_16( nSamples_temp * psEnc->sCmn.API_fs_Hz, silk_SMULBB( psEnc->sCmn.fs_kHz, 1000 ) ); |
| 171 | |
| 172 | /* Initialize the resampler for enc_API.c preparing resampling from API_fs_Hz to fs_kHz */ |
| 173 | ret += silk_resampler_init( &psEnc->sCmn.resampler_state, psEnc->sCmn.API_fs_Hz, silk_SMULBB( fs_kHz, 1000 ), 1 ); |
| 174 | |
| 175 | /* Correct resampler state by resampling buffered data from API_fs_Hz to fs_kHz */ |
| 176 | ret += silk_resampler( &psEnc->sCmn.resampler_state, x_bufFIX, x_buf_API_fs_Hz, nSamples_temp ); |
| 177 | |
| 178 | #ifndef FIXED_POINT |
| 179 | silk_short2float_array( psEnc->x_buf, x_bufFIX, ( 2 * MAX_FRAME_LENGTH_MS + LA_SHAPE_MS ) * fs_kHz ); |
| 180 | #endif |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | psEnc->sCmn.prev_API_fs_Hz = psEnc->sCmn.API_fs_Hz; |
| 185 | |
| 186 | return ret; |
| 187 | } |
| 188 | |
| 189 | static opus_int silk_setup_fs( |
| 190 | silk_encoder_state_Fxx *psEnc, /* I/O */ |
| 191 | opus_int fs_kHz, /* I */ |
| 192 | opus_int PacketSize_ms /* I */ |
| 193 | ) |
| 194 | { |
| 195 | opus_int ret = SILK_NO_ERROR; |
| 196 | |
| 197 | /* Set packet size */ |
| 198 | if( PacketSize_ms != psEnc->sCmn.PacketSize_ms ) { |
| 199 | if( ( PacketSize_ms != 10 ) && |
| 200 | ( PacketSize_ms != 20 ) && |
| 201 | ( PacketSize_ms != 40 ) && |
| 202 | ( PacketSize_ms != 60 ) ) { |
| 203 | ret = SILK_ENC_PACKET_SIZE_NOT_SUPPORTED; |
| 204 | } |
| 205 | if( PacketSize_ms <= 10 ) { |
| 206 | psEnc->sCmn.nFramesPerPacket = 1; |
| 207 | psEnc->sCmn.nb_subfr = PacketSize_ms == 10 ? 2 : 1; |
| 208 | psEnc->sCmn.frame_length = silk_SMULBB( PacketSize_ms, fs_kHz ); |
| 209 | psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS_2_SF, fs_kHz ); |
| 210 | if( psEnc->sCmn.fs_kHz == 8 ) { |
| 211 | psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_NB_iCDF; |
| 212 | } else { |
| 213 | psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_iCDF; |
| 214 | } |
| 215 | } else { |
| 216 | psEnc->sCmn.nFramesPerPacket = silk_DIV32_16( PacketSize_ms, MAX_FRAME_LENGTH_MS ); |
| 217 | psEnc->sCmn.nb_subfr = MAX_NB_SUBFR; |
| 218 | psEnc->sCmn.frame_length = silk_SMULBB( 20, fs_kHz ); |
| 219 | psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS, fs_kHz ); |
| 220 | if( psEnc->sCmn.fs_kHz == 8 ) { |
| 221 | psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_NB_iCDF; |
| 222 | } else { |
| 223 | psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_iCDF; |
| 224 | } |
| 225 | } |
| 226 | psEnc->sCmn.PacketSize_ms = PacketSize_ms; |
| 227 | psEnc->sCmn.TargetRate_bps = 0; /* trigger new SNR computation */ |
| 228 | } |
| 229 | |
| 230 | /* Set internal sampling frequency */ |
| 231 | silk_assert( fs_kHz == 8 || fs_kHz == 12 || fs_kHz == 16 ); |
| 232 | silk_assert( psEnc->sCmn.nb_subfr == 2 || psEnc->sCmn.nb_subfr == 4 ); |
| 233 | if( psEnc->sCmn.fs_kHz != fs_kHz ) { |
| 234 | /* reset part of the state */ |
| 235 | silk_memset( &psEnc->sShape, 0, sizeof( psEnc->sShape ) ); |
| 236 | silk_memset( &psEnc->sPrefilt, 0, sizeof( psEnc->sPrefilt ) ); |
| 237 | silk_memset( &psEnc->sCmn.sNSQ, 0, sizeof( psEnc->sCmn.sNSQ ) ); |
| 238 | silk_memset( psEnc->sCmn.prev_NLSFq_Q15, 0, sizeof( psEnc->sCmn.prev_NLSFq_Q15 ) ); |
| 239 | silk_memset( &psEnc->sCmn.sLP.In_LP_State, 0, sizeof( psEnc->sCmn.sLP.In_LP_State ) ); |
| 240 | psEnc->sCmn.inputBufIx = 0; |
| 241 | psEnc->sCmn.nFramesEncoded = 0; |
| 242 | psEnc->sCmn.TargetRate_bps = 0; /* trigger new SNR computation */ |
| 243 | |
| 244 | /* Initialize non-zero parameters */ |
| 245 | psEnc->sCmn.prevLag = 100; |
| 246 | psEnc->sCmn.first_frame_after_reset = 1; |
| 247 | psEnc->sPrefilt.lagPrev = 100; |
| 248 | psEnc->sShape.LastGainIndex = 10; |
| 249 | psEnc->sCmn.sNSQ.lagPrev = 100; |
| 250 | psEnc->sCmn.sNSQ.prev_gain_Q16 = 65536; |
| 251 | psEnc->sCmn.prevSignalType = TYPE_NO_VOICE_ACTIVITY; |
| 252 | |
| 253 | psEnc->sCmn.fs_kHz = fs_kHz; |
| 254 | if( psEnc->sCmn.fs_kHz == 8 ) { |
| 255 | if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) { |
| 256 | psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_NB_iCDF; |
| 257 | } else { |
| 258 | psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_NB_iCDF; |
| 259 | } |
| 260 | } else { |
| 261 | if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) { |
| 262 | psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_iCDF; |
| 263 | } else { |
| 264 | psEnc->sCmn.pitch_contour_iCDF = silk_pitch_contour_10_ms_iCDF; |
| 265 | } |
| 266 | } |
| 267 | if( psEnc->sCmn.fs_kHz == 8 || psEnc->sCmn.fs_kHz == 12 ) { |
| 268 | psEnc->sCmn.predictLPCOrder = MIN_LPC_ORDER; |
| 269 | psEnc->sCmn.psNLSF_CB = &silk_NLSF_CB_NB_MB; |
| 270 | } else { |
| 271 | psEnc->sCmn.predictLPCOrder = MAX_LPC_ORDER; |
| 272 | psEnc->sCmn.psNLSF_CB = &silk_NLSF_CB_WB; |
| 273 | } |
| 274 | psEnc->sCmn.subfr_length = SUB_FRAME_LENGTH_MS * fs_kHz; |
| 275 | psEnc->sCmn.frame_length = silk_SMULBB( psEnc->sCmn.subfr_length, psEnc->sCmn.nb_subfr ); |
| 276 | psEnc->sCmn.ltp_mem_length = silk_SMULBB( LTP_MEM_LENGTH_MS, fs_kHz ); |
| 277 | psEnc->sCmn.la_pitch = silk_SMULBB( LA_PITCH_MS, fs_kHz ); |
| 278 | psEnc->sCmn.max_pitch_lag = silk_SMULBB( 18, fs_kHz ); |
| 279 | if( psEnc->sCmn.nb_subfr == MAX_NB_SUBFR ) { |
| 280 | psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS, fs_kHz ); |
| 281 | } else { |
| 282 | psEnc->sCmn.pitch_LPC_win_length = silk_SMULBB( FIND_PITCH_LPC_WIN_MS_2_SF, fs_kHz ); |
| 283 | } |
| 284 | if( psEnc->sCmn.fs_kHz == 16 ) { |
| 285 | psEnc->sCmn.mu_LTP_Q9 = SILK_FIX_CONST( MU_LTP_QUANT_WB, 9 ); |
| 286 | psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform8_iCDF; |
| 287 | } else if( psEnc->sCmn.fs_kHz == 12 ) { |
| 288 | psEnc->sCmn.mu_LTP_Q9 = SILK_FIX_CONST( MU_LTP_QUANT_MB, 9 ); |
| 289 | psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform6_iCDF; |
| 290 | } else { |
| 291 | psEnc->sCmn.mu_LTP_Q9 = SILK_FIX_CONST( MU_LTP_QUANT_NB, 9 ); |
| 292 | psEnc->sCmn.pitch_lag_low_bits_iCDF = silk_uniform4_iCDF; |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | /* Check that settings are valid */ |
| 297 | silk_assert( ( psEnc->sCmn.subfr_length * psEnc->sCmn.nb_subfr ) == psEnc->sCmn.frame_length ); |
| 298 | |
| 299 | return ret; |
| 300 | } |
| 301 | |
| 302 | static opus_int silk_setup_complexity( |
| 303 | silk_encoder_state *psEncC, /* I/O */ |
| 304 | opus_int Complexity /* I */ |
| 305 | ) |
| 306 | { |
| 307 | opus_int ret = 0; |
| 308 | |
| 309 | /* Set encoding complexity */ |
| 310 | silk_assert( Complexity >= 0 && Complexity <= 10 ); |
| 311 | if( Complexity < 2 ) { |
| 312 | psEncC->pitchEstimationComplexity = SILK_PE_MIN_COMPLEX; |
| 313 | psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.8, 16 ); |
| 314 | psEncC->pitchEstimationLPCOrder = 6; |
| 315 | psEncC->shapingLPCOrder = 8; |
| 316 | psEncC->la_shape = 3 * psEncC->fs_kHz; |
| 317 | psEncC->nStatesDelayedDecision = 1; |
| 318 | psEncC->useInterpolatedNLSFs = 0; |
| 319 | psEncC->LTPQuantLowComplexity = 1; |
| 320 | psEncC->NLSF_MSVQ_Survivors = 2; |
| 321 | psEncC->warping_Q16 = 0; |
| 322 | } else if( Complexity < 4 ) { |
| 323 | psEncC->pitchEstimationComplexity = SILK_PE_MID_COMPLEX; |
| 324 | psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.76, 16 ); |
| 325 | psEncC->pitchEstimationLPCOrder = 8; |
| 326 | psEncC->shapingLPCOrder = 10; |
| 327 | psEncC->la_shape = 5 * psEncC->fs_kHz; |
| 328 | psEncC->nStatesDelayedDecision = 1; |
| 329 | psEncC->useInterpolatedNLSFs = 0; |
| 330 | psEncC->LTPQuantLowComplexity = 0; |
| 331 | psEncC->NLSF_MSVQ_Survivors = 4; |
| 332 | psEncC->warping_Q16 = 0; |
| 333 | } else if( Complexity < 6 ) { |
| 334 | psEncC->pitchEstimationComplexity = SILK_PE_MID_COMPLEX; |
| 335 | psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.74, 16 ); |
| 336 | psEncC->pitchEstimationLPCOrder = 10; |
| 337 | psEncC->shapingLPCOrder = 12; |
| 338 | psEncC->la_shape = 5 * psEncC->fs_kHz; |
| 339 | psEncC->nStatesDelayedDecision = 2; |
| 340 | psEncC->useInterpolatedNLSFs = 1; |
| 341 | psEncC->LTPQuantLowComplexity = 0; |
| 342 | psEncC->NLSF_MSVQ_Survivors = 8; |
| 343 | psEncC->warping_Q16 = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 ); |
| 344 | } else if( Complexity < 8 ) { |
| 345 | psEncC->pitchEstimationComplexity = SILK_PE_MID_COMPLEX; |
| 346 | psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.72, 16 ); |
| 347 | psEncC->pitchEstimationLPCOrder = 12; |
| 348 | psEncC->shapingLPCOrder = 14; |
| 349 | psEncC->la_shape = 5 * psEncC->fs_kHz; |
| 350 | psEncC->nStatesDelayedDecision = 3; |
| 351 | psEncC->useInterpolatedNLSFs = 1; |
| 352 | psEncC->LTPQuantLowComplexity = 0; |
| 353 | psEncC->NLSF_MSVQ_Survivors = 16; |
| 354 | psEncC->warping_Q16 = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 ); |
| 355 | } else { |
| 356 | psEncC->pitchEstimationComplexity = SILK_PE_MAX_COMPLEX; |
| 357 | psEncC->pitchEstimationThreshold_Q16 = SILK_FIX_CONST( 0.7, 16 ); |
| 358 | psEncC->pitchEstimationLPCOrder = 16; |
| 359 | psEncC->shapingLPCOrder = 16; |
| 360 | psEncC->la_shape = 5 * psEncC->fs_kHz; |
| 361 | psEncC->nStatesDelayedDecision = MAX_DEL_DEC_STATES; |
| 362 | psEncC->useInterpolatedNLSFs = 1; |
| 363 | psEncC->LTPQuantLowComplexity = 0; |
| 364 | psEncC->NLSF_MSVQ_Survivors = 32; |
| 365 | psEncC->warping_Q16 = psEncC->fs_kHz * SILK_FIX_CONST( WARPING_MULTIPLIER, 16 ); |
| 366 | } |
| 367 | |
| 368 | /* Do not allow higher pitch estimation LPC order than predict LPC order */ |
| 369 | psEncC->pitchEstimationLPCOrder = silk_min_int( psEncC->pitchEstimationLPCOrder, psEncC->predictLPCOrder ); |
| 370 | psEncC->shapeWinLength = SUB_FRAME_LENGTH_MS * psEncC->fs_kHz + 2 * psEncC->la_shape; |
| 371 | psEncC->Complexity = Complexity; |
| 372 | |
| 373 | silk_assert( psEncC->pitchEstimationLPCOrder <= MAX_FIND_PITCH_LPC_ORDER ); |
| 374 | silk_assert( psEncC->shapingLPCOrder <= MAX_SHAPE_LPC_ORDER ); |
| 375 | silk_assert( psEncC->nStatesDelayedDecision <= MAX_DEL_DEC_STATES ); |
| 376 | silk_assert( psEncC->warping_Q16 <= 32767 ); |
| 377 | silk_assert( psEncC->la_shape <= LA_SHAPE_MAX ); |
| 378 | silk_assert( psEncC->shapeWinLength <= SHAPE_LPC_WIN_MAX ); |
| 379 | silk_assert( psEncC->NLSF_MSVQ_Survivors <= NLSF_VQ_MAX_SURVIVORS ); |
| 380 | |
| 381 | return ret; |
| 382 | } |
| 383 | |
| 384 | static inline opus_int silk_setup_LBRR( |
| 385 | silk_encoder_state *psEncC, /* I/O */ |
| 386 | const opus_int32 TargetRate_bps /* I */ |
| 387 | ) |
| 388 | { |
| 389 | opus_int ret = SILK_NO_ERROR; |
| 390 | opus_int32 LBRR_rate_thres_bps; |
| 391 | |
| 392 | psEncC->LBRR_enabled = 0; |
| 393 | if( psEncC->useInBandFEC && psEncC->PacketLoss_perc > 0 ) { |
| 394 | if( psEncC->fs_kHz == 8 ) { |
| 395 | LBRR_rate_thres_bps = LBRR_NB_MIN_RATE_BPS; |
| 396 | } else if( psEncC->fs_kHz == 12 ) { |
| 397 | LBRR_rate_thres_bps = LBRR_MB_MIN_RATE_BPS; |
| 398 | } else { |
| 399 | LBRR_rate_thres_bps = LBRR_WB_MIN_RATE_BPS; |
| 400 | } |
| 401 | LBRR_rate_thres_bps = silk_SMULWB( silk_MUL( LBRR_rate_thres_bps, 125 - silk_min( psEncC->PacketLoss_perc, 25 ) ), SILK_FIX_CONST( 0.01, 16 ) ); |
| 402 | |
| 403 | if( TargetRate_bps > LBRR_rate_thres_bps ) { |
| 404 | /* Set gain increase for coding LBRR excitation */ |
| 405 | psEncC->LBRR_enabled = 1; |
| 406 | psEncC->LBRR_GainIncreases = silk_max_int( 7 - silk_SMULWB( (opus_int32)psEncC->PacketLoss_perc, SILK_FIX_CONST( 0.4, 16 ) ), 2 ); |
| 407 | } |
| 408 | } |
| 409 | |
| 410 | return ret; |
| 411 | } |