mirror of
https://github.com/UberGames/lilium-voyager.git
synced 2024-12-15 06:30:49 +00:00
471 lines
32 KiB
C
471 lines
32 KiB
C
/***********************************************************************
|
|
Copyright (c) 2006-2011, Skype Limited. All rights reserved.
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions
|
|
are met:
|
|
- Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
- Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in the
|
|
documentation and/or other materials provided with the distribution.
|
|
- Neither the name of Internet Society, IETF or IETF Trust, nor the
|
|
names of specific contributors, may be used to endorse or promote
|
|
products derived from this software without specific prior written
|
|
permission.
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
POSSIBILITY OF SUCH DAMAGE.
|
|
***********************************************************************/
|
|
|
|
#ifndef SILK_MAIN_H
|
|
#define SILK_MAIN_H
|
|
|
|
#include "SigProc_FIX.h"
|
|
#include "define.h"
|
|
#include "structs.h"
|
|
#include "tables.h"
|
|
#include "PLC.h"
|
|
#include "control.h"
|
|
#include "debug.h"
|
|
#include "entenc.h"
|
|
#include "entdec.h"
|
|
|
|
#if defined(OPUS_X86_MAY_HAVE_SSE4_1)
|
|
#include "x86/main_sse.h"
|
|
#endif
|
|
|
|
/* Convert Left/Right stereo signal to adaptive Mid/Side representation */
|
|
void silk_stereo_LR_to_MS(
|
|
stereo_enc_state *state, /* I/O State */
|
|
opus_int16 x1[], /* I/O Left input signal, becomes mid signal */
|
|
opus_int16 x2[], /* I/O Right input signal, becomes side signal */
|
|
opus_int8 ix[ 2 ][ 3 ], /* O Quantization indices */
|
|
opus_int8 *mid_only_flag, /* O Flag: only mid signal coded */
|
|
opus_int32 mid_side_rates_bps[], /* O Bitrates for mid and side signals */
|
|
opus_int32 total_rate_bps, /* I Total bitrate */
|
|
opus_int prev_speech_act_Q8, /* I Speech activity level in previous frame */
|
|
opus_int toMono, /* I Last frame before a stereo->mono transition */
|
|
opus_int fs_kHz, /* I Sample rate (kHz) */
|
|
opus_int frame_length /* I Number of samples */
|
|
);
|
|
|
|
/* Convert adaptive Mid/Side representation to Left/Right stereo signal */
|
|
void silk_stereo_MS_to_LR(
|
|
stereo_dec_state *state, /* I/O State */
|
|
opus_int16 x1[], /* I/O Left input signal, becomes mid signal */
|
|
opus_int16 x2[], /* I/O Right input signal, becomes side signal */
|
|
const opus_int32 pred_Q13[], /* I Predictors */
|
|
opus_int fs_kHz, /* I Samples rate (kHz) */
|
|
opus_int frame_length /* I Number of samples */
|
|
);
|
|
|
|
/* Find least-squares prediction gain for one signal based on another and quantize it */
|
|
opus_int32 silk_stereo_find_predictor( /* O Returns predictor in Q13 */
|
|
opus_int32 *ratio_Q14, /* O Ratio of residual and mid energies */
|
|
const opus_int16 x[], /* I Basis signal */
|
|
const opus_int16 y[], /* I Target signal */
|
|
opus_int32 mid_res_amp_Q0[], /* I/O Smoothed mid, residual norms */
|
|
opus_int length, /* I Number of samples */
|
|
opus_int smooth_coef_Q16 /* I Smoothing coefficient */
|
|
);
|
|
|
|
/* Quantize mid/side predictors */
|
|
void silk_stereo_quant_pred(
|
|
opus_int32 pred_Q13[], /* I/O Predictors (out: quantized) */
|
|
opus_int8 ix[ 2 ][ 3 ] /* O Quantization indices */
|
|
);
|
|
|
|
/* Entropy code the mid/side quantization indices */
|
|
void silk_stereo_encode_pred(
|
|
ec_enc *psRangeEnc, /* I/O Compressor data structure */
|
|
opus_int8 ix[ 2 ][ 3 ] /* I Quantization indices */
|
|
);
|
|
|
|
/* Entropy code the mid-only flag */
|
|
void silk_stereo_encode_mid_only(
|
|
ec_enc *psRangeEnc, /* I/O Compressor data structure */
|
|
opus_int8 mid_only_flag
|
|
);
|
|
|
|
/* Decode mid/side predictors */
|
|
void silk_stereo_decode_pred(
|
|
ec_dec *psRangeDec, /* I/O Compressor data structure */
|
|
opus_int32 pred_Q13[] /* O Predictors */
|
|
);
|
|
|
|
/* Decode mid-only flag */
|
|
void silk_stereo_decode_mid_only(
|
|
ec_dec *psRangeDec, /* I/O Compressor data structure */
|
|
opus_int *decode_only_mid /* O Flag that only mid channel has been coded */
|
|
);
|
|
|
|
/* Encodes signs of excitation */
|
|
void silk_encode_signs(
|
|
ec_enc *psRangeEnc, /* I/O Compressor data structure */
|
|
const opus_int8 pulses[], /* I pulse signal */
|
|
opus_int length, /* I length of input */
|
|
const opus_int signalType, /* I Signal type */
|
|
const opus_int quantOffsetType, /* I Quantization offset type */
|
|
const opus_int sum_pulses[ MAX_NB_SHELL_BLOCKS ] /* I Sum of absolute pulses per block */
|
|
);
|
|
|
|
/* Decodes signs of excitation */
|
|
void silk_decode_signs(
|
|
ec_dec *psRangeDec, /* I/O Compressor data structure */
|
|
opus_int16 pulses[], /* I/O pulse signal */
|
|
opus_int length, /* I length of input */
|
|
const opus_int signalType, /* I Signal type */
|
|
const opus_int quantOffsetType, /* I Quantization offset type */
|
|
const opus_int sum_pulses[ MAX_NB_SHELL_BLOCKS ] /* I Sum of absolute pulses per block */
|
|
);
|
|
|
|
/* Check encoder control struct */
|
|
opus_int check_control_input(
|
|
silk_EncControlStruct *encControl /* I Control structure */
|
|
);
|
|
|
|
/* Control internal sampling rate */
|
|
opus_int silk_control_audio_bandwidth(
|
|
silk_encoder_state *psEncC, /* I/O Pointer to Silk encoder state */
|
|
silk_EncControlStruct *encControl /* I Control structure */
|
|
);
|
|
|
|
/* Control SNR of redidual quantizer */
|
|
opus_int silk_control_SNR(
|
|
silk_encoder_state *psEncC, /* I/O Pointer to Silk encoder state */
|
|
opus_int32 TargetRate_bps /* I Target max bitrate (bps) */
|
|
);
|
|
|
|
/***************/
|
|
/* Shell coder */
|
|
/***************/
|
|
|
|
/* Encode quantization indices of excitation */
|
|
void silk_encode_pulses(
|
|
ec_enc *psRangeEnc, /* I/O compressor data structure */
|
|
const opus_int signalType, /* I Signal type */
|
|
const opus_int quantOffsetType, /* I quantOffsetType */
|
|
opus_int8 pulses[], /* I quantization indices */
|
|
const opus_int frame_length /* I Frame length */
|
|
);
|
|
|
|
/* Shell encoder, operates on one shell code frame of 16 pulses */
|
|
void silk_shell_encoder(
|
|
ec_enc *psRangeEnc, /* I/O compressor data structure */
|
|
const opus_int *pulses0 /* I data: nonnegative pulse amplitudes */
|
|
);
|
|
|
|
/* Shell decoder, operates on one shell code frame of 16 pulses */
|
|
void silk_shell_decoder(
|
|
opus_int16 *pulses0, /* O data: nonnegative pulse amplitudes */
|
|
ec_dec *psRangeDec, /* I/O Compressor data structure */
|
|
const opus_int pulses4 /* I number of pulses per pulse-subframe */
|
|
);
|
|
|
|
/* Gain scalar quantization with hysteresis, uniform on log scale */
|
|
void silk_gains_quant(
|
|
opus_int8 ind[ MAX_NB_SUBFR ], /* O gain indices */
|
|
opus_int32 gain_Q16[ MAX_NB_SUBFR ], /* I/O gains (quantized out) */
|
|
opus_int8 *prev_ind, /* I/O last index in previous frame */
|
|
const opus_int conditional, /* I first gain is delta coded if 1 */
|
|
const opus_int nb_subfr /* I number of subframes */
|
|
);
|
|
|
|
/* Gains scalar dequantization, uniform on log scale */
|
|
void silk_gains_dequant(
|
|
opus_int32 gain_Q16[ MAX_NB_SUBFR ], /* O quantized gains */
|
|
const opus_int8 ind[ MAX_NB_SUBFR ], /* I gain indices */
|
|
opus_int8 *prev_ind, /* I/O last index in previous frame */
|
|
const opus_int conditional, /* I first gain is delta coded if 1 */
|
|
const opus_int nb_subfr /* I number of subframes */
|
|
);
|
|
|
|
/* Compute unique identifier of gain indices vector */
|
|
opus_int32 silk_gains_ID( /* O returns unique identifier of gains */
|
|
const opus_int8 ind[ MAX_NB_SUBFR ], /* I gain indices */
|
|
const opus_int nb_subfr /* I number of subframes */
|
|
);
|
|
|
|
/* Interpolate two vectors */
|
|
void silk_interpolate(
|
|
opus_int16 xi[ MAX_LPC_ORDER ], /* O interpolated vector */
|
|
const opus_int16 x0[ MAX_LPC_ORDER ], /* I first vector */
|
|
const opus_int16 x1[ MAX_LPC_ORDER ], /* I second vector */
|
|
const opus_int ifact_Q2, /* I interp. factor, weight on 2nd vector */
|
|
const opus_int d /* I number of parameters */
|
|
);
|
|
|
|
/* LTP tap quantizer */
|
|
void silk_quant_LTP_gains(
|
|
opus_int16 B_Q14[ MAX_NB_SUBFR * LTP_ORDER ], /* I/O (un)quantized LTP gains */
|
|
opus_int8 cbk_index[ MAX_NB_SUBFR ], /* O Codebook Index */
|
|
opus_int8 *periodicity_index, /* O Periodicity Index */
|
|
opus_int32 *sum_gain_dB_Q7, /* I/O Cumulative max prediction gain */
|
|
const opus_int32 W_Q18[ MAX_NB_SUBFR*LTP_ORDER*LTP_ORDER ], /* I Error Weights in Q18 */
|
|
opus_int mu_Q9, /* I Mu value (R/D tradeoff) */
|
|
opus_int lowComplexity, /* I Flag for low complexity */
|
|
const opus_int nb_subfr, /* I number of subframes */
|
|
int arch /* I Run-time architecture */
|
|
);
|
|
|
|
/* Entropy constrained matrix-weighted VQ, for a single input data vector */
|
|
void silk_VQ_WMat_EC_c(
|
|
opus_int8 *ind, /* O index of best codebook vector */
|
|
opus_int32 *rate_dist_Q14, /* O best weighted quant error + mu * rate */
|
|
opus_int *gain_Q7, /* O sum of absolute LTP coefficients */
|
|
const opus_int16 *in_Q14, /* I input vector to be quantized */
|
|
const opus_int32 *W_Q18, /* I weighting matrix */
|
|
const opus_int8 *cb_Q7, /* I codebook */
|
|
const opus_uint8 *cb_gain_Q7, /* I codebook effective gain */
|
|
const opus_uint8 *cl_Q5, /* I code length for each codebook vector */
|
|
const opus_int mu_Q9, /* I tradeoff betw. weighted error and rate */
|
|
const opus_int32 max_gain_Q7, /* I maximum sum of absolute LTP coefficients */
|
|
opus_int L /* I number of vectors in codebook */
|
|
);
|
|
|
|
#if !defined(OVERRIDE_silk_VQ_WMat_EC)
|
|
#define silk_VQ_WMat_EC(ind, rate_dist_Q14, gain_Q7, in_Q14, W_Q18, cb_Q7, cb_gain_Q7, cl_Q5, \
|
|
mu_Q9, max_gain_Q7, L, arch) \
|
|
((void)(arch),silk_VQ_WMat_EC_c(ind, rate_dist_Q14, gain_Q7, in_Q14, W_Q18, cb_Q7, cb_gain_Q7, cl_Q5, \
|
|
mu_Q9, max_gain_Q7, L))
|
|
#endif
|
|
|
|
/************************************/
|
|
/* Noise shaping quantization (NSQ) */
|
|
/************************************/
|
|
|
|
void silk_NSQ_c(
|
|
const silk_encoder_state *psEncC, /* I/O Encoder State */
|
|
silk_nsq_state *NSQ, /* I/O NSQ state */
|
|
SideInfoIndices *psIndices, /* I/O Quantization Indices */
|
|
const opus_int32 x_Q3[], /* I Prefiltered input signal */
|
|
opus_int8 pulses[], /* O Quantized pulse signal */
|
|
const opus_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefs */
|
|
const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ], /* I Long term prediction coefs */
|
|
const opus_int16 AR2_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ], /* I Noise shaping coefs */
|
|
const opus_int HarmShapeGain_Q14[ MAX_NB_SUBFR ], /* I Long term shaping coefs */
|
|
const opus_int Tilt_Q14[ MAX_NB_SUBFR ], /* I Spectral tilt */
|
|
const opus_int32 LF_shp_Q14[ MAX_NB_SUBFR ], /* I Low frequency shaping coefs */
|
|
const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I Quantization step sizes */
|
|
const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lags */
|
|
const opus_int Lambda_Q10, /* I Rate/distortion tradeoff */
|
|
const opus_int LTP_scale_Q14 /* I LTP state scaling */
|
|
);
|
|
|
|
#if !defined(OVERRIDE_silk_NSQ)
|
|
#define silk_NSQ(psEncC, NSQ, psIndices, x_Q3, pulses, PredCoef_Q12, LTPCoef_Q14, AR2_Q13, \
|
|
HarmShapeGain_Q14, Tilt_Q14, LF_shp_Q14, Gains_Q16, pitchL, Lambda_Q10, LTP_scale_Q14, arch) \
|
|
((void)(arch),silk_NSQ_c(psEncC, NSQ, psIndices, x_Q3, pulses, PredCoef_Q12, LTPCoef_Q14, AR2_Q13, \
|
|
HarmShapeGain_Q14, Tilt_Q14, LF_shp_Q14, Gains_Q16, pitchL, Lambda_Q10, LTP_scale_Q14))
|
|
#endif
|
|
|
|
/* Noise shaping using delayed decision */
|
|
void silk_NSQ_del_dec_c(
|
|
const silk_encoder_state *psEncC, /* I/O Encoder State */
|
|
silk_nsq_state *NSQ, /* I/O NSQ state */
|
|
SideInfoIndices *psIndices, /* I/O Quantization Indices */
|
|
const opus_int32 x_Q3[], /* I Prefiltered input signal */
|
|
opus_int8 pulses[], /* O Quantized pulse signal */
|
|
const opus_int16 PredCoef_Q12[ 2 * MAX_LPC_ORDER ], /* I Short term prediction coefs */
|
|
const opus_int16 LTPCoef_Q14[ LTP_ORDER * MAX_NB_SUBFR ], /* I Long term prediction coefs */
|
|
const opus_int16 AR2_Q13[ MAX_NB_SUBFR * MAX_SHAPE_LPC_ORDER ], /* I Noise shaping coefs */
|
|
const opus_int HarmShapeGain_Q14[ MAX_NB_SUBFR ], /* I Long term shaping coefs */
|
|
const opus_int Tilt_Q14[ MAX_NB_SUBFR ], /* I Spectral tilt */
|
|
const opus_int32 LF_shp_Q14[ MAX_NB_SUBFR ], /* I Low frequency shaping coefs */
|
|
const opus_int32 Gains_Q16[ MAX_NB_SUBFR ], /* I Quantization step sizes */
|
|
const opus_int pitchL[ MAX_NB_SUBFR ], /* I Pitch lags */
|
|
const opus_int Lambda_Q10, /* I Rate/distortion tradeoff */
|
|
const opus_int LTP_scale_Q14 /* I LTP state scaling */
|
|
);
|
|
|
|
#if !defined(OVERRIDE_silk_NSQ_del_dec)
|
|
#define silk_NSQ_del_dec(psEncC, NSQ, psIndices, x_Q3, pulses, PredCoef_Q12, LTPCoef_Q14, AR2_Q13, \
|
|
HarmShapeGain_Q14, Tilt_Q14, LF_shp_Q14, Gains_Q16, pitchL, Lambda_Q10, LTP_scale_Q14, arch) \
|
|
((void)(arch),silk_NSQ_del_dec_c(psEncC, NSQ, psIndices, x_Q3, pulses, PredCoef_Q12, LTPCoef_Q14, AR2_Q13, \
|
|
HarmShapeGain_Q14, Tilt_Q14, LF_shp_Q14, Gains_Q16, pitchL, Lambda_Q10, LTP_scale_Q14))
|
|
#endif
|
|
|
|
/************/
|
|
/* Silk VAD */
|
|
/************/
|
|
/* Initialize the Silk VAD */
|
|
opus_int silk_VAD_Init( /* O Return value, 0 if success */
|
|
silk_VAD_state *psSilk_VAD /* I/O Pointer to Silk VAD state */
|
|
);
|
|
|
|
/* Get speech activity level in Q8 */
|
|
opus_int silk_VAD_GetSA_Q8_c( /* O Return value, 0 if success */
|
|
silk_encoder_state *psEncC, /* I/O Encoder state */
|
|
const opus_int16 pIn[] /* I PCM input */
|
|
);
|
|
|
|
#if !defined(OVERRIDE_silk_VAD_GetSA_Q8)
|
|
#define silk_VAD_GetSA_Q8(psEnC, pIn, arch) ((void)(arch),silk_VAD_GetSA_Q8_c(psEnC, pIn))
|
|
#endif
|
|
|
|
/* Low-pass filter with variable cutoff frequency based on */
|
|
/* piece-wise linear interpolation between elliptic filters */
|
|
/* Start by setting transition_frame_no = 1; */
|
|
void silk_LP_variable_cutoff(
|
|
silk_LP_state *psLP, /* I/O LP filter state */
|
|
opus_int16 *frame, /* I/O Low-pass filtered output signal */
|
|
const opus_int frame_length /* I Frame length */
|
|
);
|
|
|
|
/******************/
|
|
/* NLSF Quantizer */
|
|
/******************/
|
|
/* Limit, stabilize, convert and quantize NLSFs */
|
|
void silk_process_NLSFs(
|
|
silk_encoder_state *psEncC, /* I/O Encoder state */
|
|
opus_int16 PredCoef_Q12[ 2 ][ MAX_LPC_ORDER ], /* O Prediction coefficients */
|
|
opus_int16 pNLSF_Q15[ MAX_LPC_ORDER ], /* I/O Normalized LSFs (quant out) (0 - (2^15-1)) */
|
|
const opus_int16 prev_NLSFq_Q15[ MAX_LPC_ORDER ] /* I Previous Normalized LSFs (0 - (2^15-1)) */
|
|
);
|
|
|
|
opus_int32 silk_NLSF_encode( /* O Returns RD value in Q25 */
|
|
opus_int8 *NLSFIndices, /* I Codebook path vector [ LPC_ORDER + 1 ] */
|
|
opus_int16 *pNLSF_Q15, /* I/O Quantized NLSF vector [ LPC_ORDER ] */
|
|
const silk_NLSF_CB_struct *psNLSF_CB, /* I Codebook object */
|
|
const opus_int16 *pW_QW, /* I NLSF weight vector [ LPC_ORDER ] */
|
|
const opus_int NLSF_mu_Q20, /* I Rate weight for the RD optimization */
|
|
const opus_int nSurvivors, /* I Max survivors after first stage */
|
|
const opus_int signalType /* I Signal type: 0/1/2 */
|
|
);
|
|
|
|
/* Compute quantization errors for an LPC_order element input vector for a VQ codebook */
|
|
void silk_NLSF_VQ(
|
|
opus_int32 err_Q26[], /* O Quantization errors [K] */
|
|
const opus_int16 in_Q15[], /* I Input vectors to be quantized [LPC_order] */
|
|
const opus_uint8 pCB_Q8[], /* I Codebook vectors [K*LPC_order] */
|
|
const opus_int K, /* I Number of codebook vectors */
|
|
const opus_int LPC_order /* I Number of LPCs */
|
|
);
|
|
|
|
/* Delayed-decision quantizer for NLSF residuals */
|
|
opus_int32 silk_NLSF_del_dec_quant( /* O Returns RD value in Q25 */
|
|
opus_int8 indices[], /* O Quantization indices [ order ] */
|
|
const opus_int16 x_Q10[], /* I Input [ order ] */
|
|
const opus_int16 w_Q5[], /* I Weights [ order ] */
|
|
const opus_uint8 pred_coef_Q8[], /* I Backward predictor coefs [ order ] */
|
|
const opus_int16 ec_ix[], /* I Indices to entropy coding tables [ order ] */
|
|
const opus_uint8 ec_rates_Q5[], /* I Rates [] */
|
|
const opus_int quant_step_size_Q16, /* I Quantization step size */
|
|
const opus_int16 inv_quant_step_size_Q6, /* I Inverse quantization step size */
|
|
const opus_int32 mu_Q20, /* I R/D tradeoff */
|
|
const opus_int16 order /* I Number of input values */
|
|
);
|
|
|
|
/* Unpack predictor values and indices for entropy coding tables */
|
|
void silk_NLSF_unpack(
|
|
opus_int16 ec_ix[], /* O Indices to entropy tables [ LPC_ORDER ] */
|
|
opus_uint8 pred_Q8[], /* O LSF predictor [ LPC_ORDER ] */
|
|
const silk_NLSF_CB_struct *psNLSF_CB, /* I Codebook object */
|
|
const opus_int CB1_index /* I Index of vector in first LSF codebook */
|
|
);
|
|
|
|
/***********************/
|
|
/* NLSF vector decoder */
|
|
/***********************/
|
|
void silk_NLSF_decode(
|
|
opus_int16 *pNLSF_Q15, /* O Quantized NLSF vector [ LPC_ORDER ] */
|
|
opus_int8 *NLSFIndices, /* I Codebook path vector [ LPC_ORDER + 1 ] */
|
|
const silk_NLSF_CB_struct *psNLSF_CB /* I Codebook object */
|
|
);
|
|
|
|
/****************************************************/
|
|
/* Decoder Functions */
|
|
/****************************************************/
|
|
opus_int silk_init_decoder(
|
|
silk_decoder_state *psDec /* I/O Decoder state pointer */
|
|
);
|
|
|
|
/* Set decoder sampling rate */
|
|
opus_int silk_decoder_set_fs(
|
|
silk_decoder_state *psDec, /* I/O Decoder state pointer */
|
|
opus_int fs_kHz, /* I Sampling frequency (kHz) */
|
|
opus_int32 fs_API_Hz /* I API Sampling frequency (Hz) */
|
|
);
|
|
|
|
/****************/
|
|
/* Decode frame */
|
|
/****************/
|
|
opus_int silk_decode_frame(
|
|
silk_decoder_state *psDec, /* I/O Pointer to Silk decoder state */
|
|
ec_dec *psRangeDec, /* I/O Compressor data structure */
|
|
opus_int16 pOut[], /* O Pointer to output speech frame */
|
|
opus_int32 *pN, /* O Pointer to size of output frame */
|
|
opus_int lostFlag, /* I 0: no loss, 1 loss, 2 decode fec */
|
|
opus_int condCoding, /* I The type of conditional coding to use */
|
|
int arch /* I Run-time architecture */
|
|
);
|
|
|
|
/* Decode indices from bitstream */
|
|
void silk_decode_indices(
|
|
silk_decoder_state *psDec, /* I/O State */
|
|
ec_dec *psRangeDec, /* I/O Compressor data structure */
|
|
opus_int FrameIndex, /* I Frame number */
|
|
opus_int decode_LBRR, /* I Flag indicating LBRR data is being decoded */
|
|
opus_int condCoding /* I The type of conditional coding to use */
|
|
);
|
|
|
|
/* Decode parameters from payload */
|
|
void silk_decode_parameters(
|
|
silk_decoder_state *psDec, /* I/O State */
|
|
silk_decoder_control *psDecCtrl, /* I/O Decoder control */
|
|
opus_int condCoding /* I The type of conditional coding to use */
|
|
);
|
|
|
|
/* Core decoder. Performs inverse NSQ operation LTP + LPC */
|
|
void silk_decode_core(
|
|
silk_decoder_state *psDec, /* I/O Decoder state */
|
|
silk_decoder_control *psDecCtrl, /* I Decoder control */
|
|
opus_int16 xq[], /* O Decoded speech */
|
|
const opus_int16 pulses[ MAX_FRAME_LENGTH ], /* I Pulse signal */
|
|
int arch /* I Run-time architecture */
|
|
);
|
|
|
|
/* Decode quantization indices of excitation (Shell coding) */
|
|
void silk_decode_pulses(
|
|
ec_dec *psRangeDec, /* I/O Compressor data structure */
|
|
opus_int16 pulses[], /* O Excitation signal */
|
|
const opus_int signalType, /* I Sigtype */
|
|
const opus_int quantOffsetType, /* I quantOffsetType */
|
|
const opus_int frame_length /* I Frame length */
|
|
);
|
|
|
|
/******************/
|
|
/* CNG */
|
|
/******************/
|
|
|
|
/* Reset CNG */
|
|
void silk_CNG_Reset(
|
|
silk_decoder_state *psDec /* I/O Decoder state */
|
|
);
|
|
|
|
/* Updates CNG estimate, and applies the CNG when packet was lost */
|
|
void silk_CNG(
|
|
silk_decoder_state *psDec, /* I/O Decoder state */
|
|
silk_decoder_control *psDecCtrl, /* I/O Decoder control */
|
|
opus_int16 frame[], /* I/O Signal */
|
|
opus_int length /* I Length of residual */
|
|
);
|
|
|
|
/* Encoding of various parameters */
|
|
void silk_encode_indices(
|
|
silk_encoder_state *psEncC, /* I/O Encoder state */
|
|
ec_enc *psRangeEnc, /* I/O Compressor data structure */
|
|
opus_int FrameIndex, /* I Frame number */
|
|
opus_int encode_LBRR, /* I Flag indicating LBRR data is being encoded */
|
|
opus_int condCoding /* I The type of conditional coding to use */
|
|
);
|
|
|
|
#endif
|