mirror of
https://github.com/ShaYmez/MMDVM_CM.git
synced 2024-11-15 20:51:49 -05:00
68 lines
3.4 KiB
C
68 lines
3.4 KiB
C
|
/*---------------------------------------------------------------------------*\
|
||
|
|
|
||
|
|
FILE........: codec2_internal.h
|
||
|
|
AUTHOR......: David Rowe
|
||
|
|
DATE CREATED: April 16 2012
|
||
|
|
|
||
|
|
Header file for Codec2 internal states, exposed via this header
|
||
|
|
file to assist in testing.
|
||
|
|
|
||
|
|
\*---------------------------------------------------------------------------*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
Copyright (C) 2012 David Rowe
|
||
|
|
|
||
|
|
All rights reserved.
|
||
|
|
|
||
|
|
This program is free software; you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU Lesser General Public License version 2.1, as
|
||
|
|
published by the Free Software Foundation. This program is
|
||
|
|
distributed in the hope that it will be useful, but WITHOUT ANY
|
||
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
|
||
|
|
License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU Lesser General Public License
|
||
|
|
along with this program; if not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __CODEC2_INTERNAL__
|
||
|
|
#define __CODEC2_INTERNAL__
|
||
|
|
|
||
|
|
#include "kiss_fft.h"
|
||
|
|
|
||
|
|
using CODEC2 = struct codec2_tag {
|
||
|
|
int mode;
|
||
|
|
int Fs;
|
||
|
|
int n_samp;
|
||
|
|
int m_pitch;
|
||
|
|
int gray; /* non-zero for gray encoding */
|
||
|
|
int lpc_pf; /* LPC post filter on */
|
||
|
|
int bass_boost; /* LPC post filter bass boost */
|
||
|
|
int smoothing; /* enable smoothing for channels with errors */
|
||
|
|
float ex_phase; /* excitation model phase track */
|
||
|
|
float bg_est; /* background noise estimate for post filter */
|
||
|
|
float prev_f0_enc; /* previous frame's f0 estimate */
|
||
|
|
float prev_e_dec; /* previous frame's LPC energy */
|
||
|
|
float beta; /* LPC post filter parameters */
|
||
|
|
float gamma;
|
||
|
|
float xq_enc[2]; /* joint pitch and energy VQ states */
|
||
|
|
float xq_dec[2];
|
||
|
|
float W[FFT_ENC]; /* DFT of w[] */
|
||
|
|
float hpf_states[2]; /* high pass filter states */
|
||
|
|
float prev_lsps_dec[LPC_ORD]; /* previous frame's LSPs */
|
||
|
|
float *softdec; /* optional soft decn bits from demod */
|
||
|
|
MODEL prev_model_dec; /* previous frame's model parameters */
|
||
|
|
C2CONST c2const;
|
||
|
|
FFT_STATE fft_fwd_cfg; /* forward FFT config */
|
||
|
|
FFTR_STATE fftr_fwd_cfg; /* forward real FFT config */
|
||
|
|
FFTR_STATE fftr_inv_cfg; /* inverse FFT config */
|
||
|
|
std::vector<float> w; /* [m_pitch] time domain hamming window */
|
||
|
|
std::vector<float> Pn; /* [2*n_samp] trapezoidal synthesis window */
|
||
|
|
std::vector<float> Sn; /* [m_pitch] input speech */
|
||
|
|
std::vector<float> Sn_; /* [2*n_samp] synthesised output speech */
|
||
|
|
std::vector<float> bpf_buf; /* buffer for band pass filter */
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|