michael@0: /*********************************************************************** michael@0: Copyright (c) 2006-2011, Skype Limited. All rights reserved. michael@0: Redistribution and use in source and binary forms, with or without michael@0: modification, are permitted provided that the following conditions michael@0: are met: michael@0: - Redistributions of source code must retain the above copyright notice, michael@0: this list of conditions and the following disclaimer. michael@0: - Redistributions in binary form must reproduce the above copyright michael@0: notice, this list of conditions and the following disclaimer in the michael@0: documentation and/or other materials provided with the distribution. michael@0: - Neither the name of Internet Society, IETF or IETF Trust, nor the michael@0: names of specific contributors, may be used to endorse or promote michael@0: products derived from this software without specific prior written michael@0: permission. michael@0: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" michael@0: AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE michael@0: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE michael@0: ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE michael@0: LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR michael@0: CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF michael@0: SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS michael@0: INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN michael@0: CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) michael@0: ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE michael@0: POSSIBILITY OF SUCH DAMAGE. michael@0: ***********************************************************************/ michael@0: michael@0: #ifndef SILK_MAIN_H michael@0: #define SILK_MAIN_H michael@0: michael@0: #include "SigProc_FIX.h" michael@0: #include "define.h" michael@0: #include "structs.h" michael@0: #include "tables.h" michael@0: #include "PLC.h" michael@0: #include "control.h" michael@0: #include "debug.h" michael@0: #include "entenc.h" michael@0: #include "entdec.h" michael@0: michael@0: /* Convert Left/Right stereo signal to adaptive Mid/Side representation */ michael@0: void silk_stereo_LR_to_MS( michael@0: stereo_enc_state *state, /* I/O State */ michael@0: opus_int16 x1[], /* I/O Left input signal, becomes mid signal */ michael@0: opus_int16 x2[], /* I/O Right input signal, becomes side signal */ michael@0: opus_int8 ix[ 2 ][ 3 ], /* O Quantization indices */ michael@0: opus_int8 *mid_only_flag, /* O Flag: only mid signal coded */ michael@0: opus_int32 mid_side_rates_bps[], /* O Bitrates for mid and side signals */ michael@0: opus_int32 total_rate_bps, /* I Total bitrate */ michael@0: opus_int prev_speech_act_Q8, /* I Speech activity level in previous frame */ michael@0: opus_int toMono, /* I Last frame before a stereo->mono transition */ michael@0: opus_int fs_kHz, /* I Sample rate (kHz) */ michael@0: opus_int frame_length /* I Number of samples */ michael@0: ); michael@0: michael@0: /* Convert adaptive Mid/Side representation to Left/Right stereo signal */ michael@0: void silk_stereo_MS_to_LR( michael@0: stereo_dec_state *state, /* I/O State */ michael@0: opus_int16 x1[], /* I/O Left input signal, becomes mid signal */ michael@0: opus_int16 x2[], /* I/O Right input signal, becomes side signal */ michael@0: const opus_int32 pred_Q13[], /* I Predictors */ michael@0: opus_int fs_kHz, /* I Samples rate (kHz) */ michael@0: opus_int frame_length /* I Number of samples */ michael@0: ); michael@0: michael@0: /* Find least-squares prediction gain for one signal based on another and quantize it */ michael@0: opus_int32 silk_stereo_find_predictor( /* O Returns predictor in Q13 */ michael@0: opus_int32 *ratio_Q14, /* O Ratio of residual and mid energies */ michael@0: const opus_int16 x[], /* I Basis signal */ michael@0: const opus_int16 y[], /* I Target signal */ michael@0: opus_int32 mid_res_amp_Q0[], /* I/O Smoothed mid, residual norms */ michael@0: opus_int length, /* I Number of samples */ michael@0: opus_int smooth_coef_Q16 /* I Smoothing coefficient */ michael@0: ); michael@0: michael@0: /* Quantize mid/side predictors */ michael@0: void silk_stereo_quant_pred( michael@0: opus_int32 pred_Q13[], /* I/O Predictors (out: quantized) */ michael@0: opus_int8 ix[ 2 ][ 3 ] /* O Quantization indices */ michael@0: ); michael@0: michael@0: /* Entropy code the mid/side quantization indices */ michael@0: void silk_stereo_encode_pred( michael@0: ec_enc *psRangeEnc, /* I/O Compressor data structure */ michael@0: opus_int8 ix[ 2 ][ 3 ] /* I Quantization indices */ michael@0: ); michael@0: michael@0: /* Entropy code the mid-only flag */ michael@0: void silk_stereo_encode_mid_only( michael@0: ec_enc *psRangeEnc, /* I/O Compressor data structure */ michael@0: opus_int8 mid_only_flag michael@0: ); michael@0: michael@0: /* Decode mid/side predictors */ michael@0: void silk_stereo_decode_pred( michael@0: ec_dec *psRangeDec, /* I/O Compressor data structure */ michael@0: opus_int32 pred_Q13[] /* O Predictors */ michael@0: ); michael@0: michael@0: /* Decode mid-only flag */ michael@0: void silk_stereo_decode_mid_only( michael@0: ec_dec *psRangeDec, /* I/O Compressor data structure */ michael@0: opus_int *decode_only_mid /* O Flag that only mid channel has been coded */ michael@0: ); michael@0: michael@0: /* Encodes signs of excitation */ michael@0: void silk_encode_signs( michael@0: ec_enc *psRangeEnc, /* I/O Compressor data structure */ michael@0: const opus_int8 pulses[], /* I pulse signal */ michael@0: opus_int length, /* I length of input */ michael@0: const opus_int signalType, /* I Signal type */ michael@0: const opus_int quantOffsetType, /* I Quantization offset type */ michael@0: const opus_int sum_pulses[ MAX_NB_SHELL_BLOCKS ] /* I Sum of absolute pulses per block */ michael@0: ); michael@0: michael@0: /* Decodes signs of excitation */ michael@0: void silk_decode_signs( michael@0: ec_dec *psRangeDec, /* I/O Compressor data structure */ michael@0: opus_int pulses[], /* I/O pulse signal */ michael@0: opus_int length, /* I length of input */ michael@0: const opus_int signalType, /* I Signal type */ michael@0: const opus_int quantOffsetType, /* I Quantization offset type */ michael@0: const opus_int sum_pulses[ MAX_NB_SHELL_BLOCKS ] /* I Sum of absolute pulses per block */ michael@0: ); michael@0: michael@0: /* Check encoder control struct */ michael@0: opus_int check_control_input( michael@0: silk_EncControlStruct *encControl /* I Control structure */ michael@0: ); michael@0: michael@0: /* Control internal sampling rate */ michael@0: opus_int silk_control_audio_bandwidth( michael@0: silk_encoder_state *psEncC, /* I/O Pointer to Silk encoder state */ michael@0: silk_EncControlStruct *encControl /* I Control structure */ michael@0: ); michael@0: michael@0: /* Control SNR of redidual quantizer */ michael@0: opus_int silk_control_SNR( michael@0: silk_encoder_state *psEncC, /* I/O Pointer to Silk encoder state */ michael@0: opus_int32 TargetRate_bps /* I Target max bitrate (bps) */ michael@0: ); michael@0: michael@0: /***************/ michael@0: /* Shell coder */ michael@0: /***************/ michael@0: michael@0: /* Encode quantization indices of excitation */ michael@0: void silk_encode_pulses( michael@0: ec_enc *psRangeEnc, /* I/O compressor data structure */ michael@0: const opus_int signalType, /* I Signal type */ michael@0: const opus_int quantOffsetType, /* I quantOffsetType */ michael@0: opus_int8 pulses[], /* I quantization indices */ michael@0: const opus_int frame_length /* I Frame length */ michael@0: ); michael@0: michael@0: /* Shell encoder, operates on one shell code frame of 16 pulses */ michael@0: void silk_shell_encoder( michael@0: ec_enc *psRangeEnc, /* I/O compressor data structure */ michael@0: const opus_int *pulses0 /* I data: nonnegative pulse amplitudes */ michael@0: ); michael@0: michael@0: /* Shell decoder, operates on one shell code frame of 16 pulses */ michael@0: void silk_shell_decoder( michael@0: opus_int *pulses0, /* O data: nonnegative pulse amplitudes */ michael@0: ec_dec *psRangeDec, /* I/O Compressor data structure */ michael@0: const opus_int pulses4 /* I number of pulses per pulse-subframe */ michael@0: ); michael@0: michael@0: /* Gain scalar quantization with hysteresis, uniform on log scale */ michael@0: void silk_gains_quant( michael@0: opus_int8 ind[ MAX_NB_SUBFR ], /* O gain indices */ michael@0: opus_int32 gain_Q16[ MAX_NB_SUBFR ], /* I/O gains (quantized out) */ michael@0: opus_int8 *prev_ind, /* I/O last index in previous frame */ michael@0: const opus_int conditional, /* I first gain is delta coded if 1 */ michael@0: const opus_int nb_subfr /* I number of subframes */ michael@0: ); michael@0: michael@0: /* Gains scalar dequantization, uniform on log scale */ michael@0: void silk_gains_dequant( michael@0: opus_int32 gain_Q16[ MAX_NB_SUBFR ], /* O quantized gains */ michael@0: const opus_int8 ind[ MAX_NB_SUBFR ], /* I gain indices */ michael@0: opus_int8 *prev_ind, /* I/O last index in previous frame */ michael@0: const opus_int conditional, /* I first gain is delta coded if 1 */ michael@0: const opus_int nb_subfr /* I number of subframes */ michael@0: ); michael@0: michael@0: /* Compute unique identifier of gain indices vector */ michael@0: opus_int32 silk_gains_ID( /* O returns unique identifier of gains */ michael@0: const opus_int8 ind[ MAX_NB_SUBFR ], /* I gain indices */ michael@0: const opus_int nb_subfr /* I number of subframes */ michael@0: ); michael@0: michael@0: /* Interpolate two vectors */ michael@0: void silk_interpolate( michael@0: opus_int16 xi[ MAX_LPC_ORDER ], /* O interpolated vector */ michael@0: const opus_int16 x0[ MAX_LPC_ORDER ], /* I first vector */ michael@0: const opus_int16 x1[ MAX_LPC_ORDER ], /* I second vector */ michael@0: const opus_int ifact_Q2, /* I interp. factor, weight on 2nd vector */ michael@0: const opus_int d /* I number of parameters */ michael@0: ); michael@0: michael@0: /* LTP tap quantizer */ michael@0: void silk_quant_LTP_gains( michael@0: opus_int16 B_Q14[ MAX_NB_SUBFR * LTP_ORDER ], /* I/O (un)quantized LTP gains */ michael@0: opus_int8 cbk_index[ MAX_NB_SUBFR ], /* O Codebook Index */ michael@0: opus_int8 *periodicity_index, /* O Periodicity Index */ michael@0: opus_int32 *sum_gain_dB_Q7, /* I/O Cumulative max prediction gain */ michael@0: const opus_int32 W_Q18[ MAX_NB_SUBFR*LTP_ORDER*LTP_ORDER ], /* I Error Weights in Q18 */ michael@0: opus_int mu_Q9, /* I Mu value (R/D tradeoff) */ michael@0: opus_int lowComplexity, /* I Flag for low complexity */ michael@0: const opus_int nb_subfr /* I number of subframes */ michael@0: ); michael@0: michael@0: /* Entropy constrained matrix-weighted VQ, for a single input data vector */ michael@0: void silk_VQ_WMat_EC( michael@0: opus_int8 *ind, /* O index of best codebook vector */ michael@0: opus_int32 *rate_dist_Q14, /* O best weighted quant error + mu * rate */ michael@0: opus_int *gain_Q7, /* O sum of absolute LTP coefficients */ michael@0: const opus_int16 *in_Q14, /* I input vector to be quantized */ michael@0: const opus_int32 *W_Q18, /* I weighting matrix */ michael@0: const opus_int8 *cb_Q7, /* I codebook */ michael@0: const opus_uint8 *cb_gain_Q7, /* I codebook effective gain */ michael@0: const opus_uint8 *cl_Q5, /* I code length for each codebook vector */ michael@0: const opus_int mu_Q9, /* I tradeoff betw. weighted error and rate */ michael@0: const opus_int32 max_gain_Q7, /* I maximum sum of absolute LTP coefficients */ michael@0: opus_int L /* I number of vectors in codebook */ michael@0: ); michael@0: michael@0: /************************************/ michael@0: /* Noise shaping quantization (NSQ) */ michael@0: /************************************/ michael@0: void silk_NSQ( michael@0: const silk_encoder_state *psEncC, /* I/O Encoder State */ michael@0: silk_nsq_state *NSQ, /* I/O NSQ state */ michael@0: SideInfoIndices *psIndices, /* I/O Quantization Indices */ michael@0: const opus_int32 x_Q3[], /* I Prefiltered input signal */ michael@0: opus_int8 pulses[], /* O Quantized pulse signal */ michael@0: const opus_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefs */ michael@0: const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ], /* I Long term prediction coefs */ michael@0: const opus_int16 AR2_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ], /* I Noise shaping coefs */ michael@0: const opus_int HarmShapeGain_Q14[ MAX_NB_SUBFR ], /* I Long term shaping coefs */ michael@0: const opus_int Tilt_Q14[ MAX_NB_SUBFR ], /* I Spectral tilt */ michael@0: const opus_int32 LF_shp_Q14[ MAX_NB_SUBFR ], /* I Low frequency shaping coefs */ michael@0: const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I Quantization step sizes */ michael@0: const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lags */ michael@0: const opus_int Lambda_Q10, /* I Rate/distortion tradeoff */ michael@0: const opus_int LTP_scale_Q14 /* I LTP state scaling */ michael@0: ); michael@0: michael@0: /* Noise shaping using delayed decision */ michael@0: void silk_NSQ_del_dec( michael@0: const silk_encoder_state *psEncC, /* I/O Encoder State */ michael@0: silk_nsq_state *NSQ, /* I/O NSQ state */ michael@0: SideInfoIndices *psIndices, /* I/O Quantization Indices */ michael@0: const opus_int32 x_Q3[], /* I Prefiltered input signal */ michael@0: opus_int8 pulses[], /* O Quantized pulse signal */ michael@0: const opus_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefs */ michael@0: const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ], /* I Long term prediction coefs */ michael@0: const opus_int16 AR2_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ], /* I Noise shaping coefs */ michael@0: const opus_int HarmShapeGain_Q14[ MAX_NB_SUBFR ], /* I Long term shaping coefs */ michael@0: const opus_int Tilt_Q14[ MAX_NB_SUBFR ], /* I Spectral tilt */ michael@0: const opus_int32 LF_shp_Q14[ MAX_NB_SUBFR ], /* I Low frequency shaping coefs */ michael@0: const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I Quantization step sizes */ michael@0: const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lags */ michael@0: const opus_int Lambda_Q10, /* I Rate/distortion tradeoff */ michael@0: const opus_int LTP_scale_Q14 /* I LTP state scaling */ michael@0: ); michael@0: michael@0: /************/ michael@0: /* Silk VAD */ michael@0: /************/ michael@0: /* Initialize the Silk VAD */ michael@0: opus_int silk_VAD_Init( /* O Return value, 0 if success */ michael@0: silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */ michael@0: ); michael@0: michael@0: /* Get speech activity level in Q8 */ michael@0: opus_int silk_VAD_GetSA_Q8( /* O Return value, 0 if success */ michael@0: silk_encoder_state *psEncC, /* I/O Encoder state */ michael@0: const opus_int16 pIn[] /* I PCM input */ michael@0: ); michael@0: michael@0: /* Low-pass filter with variable cutoff frequency based on */ michael@0: /* piece-wise linear interpolation between elliptic filters */ michael@0: /* Start by setting transition_frame_no = 1; */ michael@0: void silk_LP_variable_cutoff( michael@0: silk_LP_state *psLP, /* I/O LP filter state */ michael@0: opus_int16 *frame, /* I/O Low-pass filtered output signal */ michael@0: const opus_int frame_length /* I Frame length */ michael@0: ); michael@0: michael@0: /******************/ michael@0: /* NLSF Quantizer */ michael@0: /******************/ michael@0: /* Limit, stabilize, convert and quantize NLSFs */ michael@0: void silk_process_NLSFs( michael@0: silk_encoder_state *psEncC, /* I/O Encoder state */ michael@0: opus_int16 PredCoef_Q12[ 2 ][ MAX_LPC_ORDER ], /* O Prediction coefficients */ michael@0: opus_int16 pNLSF_Q15[ MAX_LPC_ORDER ], /* I/O Normalized LSFs (quant out) (0 - (2^15-1)) */ michael@0: const opus_int16 prev_NLSFq_Q15[ MAX_LPC_ORDER ] /* I Previous Normalized LSFs (0 - (2^15-1)) */ michael@0: ); michael@0: michael@0: opus_int32 silk_NLSF_encode( /* O Returns RD value in Q25 */ michael@0: opus_int8 *NLSFIndices, /* I Codebook path vector [ LPC_ORDER + 1 ] */ michael@0: opus_int16 *pNLSF_Q15, /* I/O Quantized NLSF vector [ LPC_ORDER ] */ michael@0: const silk_NLSF_CB_struct *psNLSF_CB, /* I Codebook object */ michael@0: const opus_int16 *pW_QW, /* I NLSF weight vector [ LPC_ORDER ] */ michael@0: const opus_int NLSF_mu_Q20, /* I Rate weight for the RD optimization */ michael@0: const opus_int nSurvivors, /* I Max survivors after first stage */ michael@0: const opus_int signalType /* I Signal type: 0/1/2 */ michael@0: ); michael@0: michael@0: /* Compute quantization errors for an LPC_order element input vector for a VQ codebook */ michael@0: void silk_NLSF_VQ( michael@0: opus_int32 err_Q26[], /* O Quantization errors [K] */ michael@0: const opus_int16 in_Q15[], /* I Input vectors to be quantized [LPC_order] */ michael@0: const opus_uint8 pCB_Q8[], /* I Codebook vectors [K*LPC_order] */ michael@0: const opus_int K, /* I Number of codebook vectors */ michael@0: const opus_int LPC_order /* I Number of LPCs */ michael@0: ); michael@0: michael@0: /* Delayed-decision quantizer for NLSF residuals */ michael@0: opus_int32 silk_NLSF_del_dec_quant( /* O Returns RD value in Q25 */ michael@0: opus_int8 indices[], /* O Quantization indices [ order ] */ michael@0: const opus_int16 x_Q10[], /* I Input [ order ] */ michael@0: const opus_int16 w_Q5[], /* I Weights [ order ] */ michael@0: const opus_uint8 pred_coef_Q8[], /* I Backward predictor coefs [ order ] */ michael@0: const opus_int16 ec_ix[], /* I Indices to entropy coding tables [ order ] */ michael@0: const opus_uint8 ec_rates_Q5[], /* I Rates [] */ michael@0: const opus_int quant_step_size_Q16, /* I Quantization step size */ michael@0: const opus_int16 inv_quant_step_size_Q6, /* I Inverse quantization step size */ michael@0: const opus_int32 mu_Q20, /* I R/D tradeoff */ michael@0: const opus_int16 order /* I Number of input values */ michael@0: ); michael@0: michael@0: /* Unpack predictor values and indices for entropy coding tables */ michael@0: void silk_NLSF_unpack( michael@0: opus_int16 ec_ix[], /* O Indices to entropy tables [ LPC_ORDER ] */ michael@0: opus_uint8 pred_Q8[], /* O LSF predictor [ LPC_ORDER ] */ michael@0: const silk_NLSF_CB_struct *psNLSF_CB, /* I Codebook object */ michael@0: const opus_int CB1_index /* I Index of vector in first LSF codebook */ michael@0: ); michael@0: michael@0: /***********************/ michael@0: /* NLSF vector decoder */ michael@0: /***********************/ michael@0: void silk_NLSF_decode( michael@0: opus_int16 *pNLSF_Q15, /* O Quantized NLSF vector [ LPC_ORDER ] */ michael@0: opus_int8 *NLSFIndices, /* I Codebook path vector [ LPC_ORDER + 1 ] */ michael@0: const silk_NLSF_CB_struct *psNLSF_CB /* I Codebook object */ michael@0: ); michael@0: michael@0: /****************************************************/ michael@0: /* Decoder Functions */ michael@0: /****************************************************/ michael@0: opus_int silk_init_decoder( michael@0: silk_decoder_state *psDec /* I/O Decoder state pointer */ michael@0: ); michael@0: michael@0: /* Set decoder sampling rate */ michael@0: opus_int silk_decoder_set_fs( michael@0: silk_decoder_state *psDec, /* I/O Decoder state pointer */ michael@0: opus_int fs_kHz, /* I Sampling frequency (kHz) */ michael@0: opus_int32 fs_API_Hz /* I API Sampling frequency (Hz) */ michael@0: ); michael@0: michael@0: /****************/ michael@0: /* Decode frame */ michael@0: /****************/ michael@0: opus_int silk_decode_frame( michael@0: silk_decoder_state *psDec, /* I/O Pointer to Silk decoder state */ michael@0: ec_dec *psRangeDec, /* I/O Compressor data structure */ michael@0: opus_int16 pOut[], /* O Pointer to output speech frame */ michael@0: opus_int32 *pN, /* O Pointer to size of output frame */ michael@0: opus_int lostFlag, /* I 0: no loss, 1 loss, 2 decode fec */ michael@0: opus_int condCoding /* I The type of conditional coding to use */ michael@0: ); michael@0: michael@0: /* Decode indices from bitstream */ michael@0: void silk_decode_indices( michael@0: silk_decoder_state *psDec, /* I/O State */ michael@0: ec_dec *psRangeDec, /* I/O Compressor data structure */ michael@0: opus_int FrameIndex, /* I Frame number */ michael@0: opus_int decode_LBRR, /* I Flag indicating LBRR data is being decoded */ michael@0: opus_int condCoding /* I The type of conditional coding to use */ michael@0: ); michael@0: michael@0: /* Decode parameters from payload */ michael@0: void silk_decode_parameters( michael@0: silk_decoder_state *psDec, /* I/O State */ michael@0: silk_decoder_control *psDecCtrl, /* I/O Decoder control */ michael@0: opus_int condCoding /* I The type of conditional coding to use */ michael@0: ); michael@0: michael@0: /* Core decoder. Performs inverse NSQ operation LTP + LPC */ michael@0: void silk_decode_core( michael@0: silk_decoder_state *psDec, /* I/O Decoder state */ michael@0: silk_decoder_control *psDecCtrl, /* I Decoder control */ michael@0: opus_int16 xq[], /* O Decoded speech */ michael@0: const opus_int pulses[ MAX_FRAME_LENGTH ] /* I Pulse signal */ michael@0: ); michael@0: michael@0: /* Decode quantization indices of excitation (Shell coding) */ michael@0: void silk_decode_pulses( michael@0: ec_dec *psRangeDec, /* I/O Compressor data structure */ michael@0: opus_int pulses[], /* O Excitation signal */ michael@0: const opus_int signalType, /* I Sigtype */ michael@0: const opus_int quantOffsetType, /* I quantOffsetType */ michael@0: const opus_int frame_length /* I Frame length */ michael@0: ); michael@0: michael@0: /******************/ michael@0: /* CNG */ michael@0: /******************/ michael@0: michael@0: /* Reset CNG */ michael@0: void silk_CNG_Reset( michael@0: silk_decoder_state *psDec /* I/O Decoder state */ michael@0: ); michael@0: michael@0: /* Updates CNG estimate, and applies the CNG when packet was lost */ michael@0: void silk_CNG( michael@0: silk_decoder_state *psDec, /* I/O Decoder state */ michael@0: silk_decoder_control *psDecCtrl, /* I/O Decoder control */ michael@0: opus_int16 frame[], /* I/O Signal */ michael@0: opus_int length /* I Length of residual */ michael@0: ); michael@0: michael@0: /* Encoding of various parameters */ michael@0: void silk_encode_indices( michael@0: silk_encoder_state *psEncC, /* I/O Encoder state */ michael@0: ec_enc *psRangeEnc, /* I/O Compressor data structure */ michael@0: opus_int FrameIndex, /* I Frame number */ michael@0: opus_int encode_LBRR, /* I Flag indicating LBRR data is being encoded */ michael@0: opus_int condCoding /* I The type of conditional coding to use */ michael@0: ); michael@0: michael@0: #endif