mirror of
https://github.com/ShaYmez/MMDVM_CM.git
synced 2024-11-16 05:01:47 -05:00
101 lines
3.7 KiB
C++
101 lines
3.7 KiB
C++
/*---------------------------------------------------------------------------*\
|
|
|
|
FILE........: codec2.h
|
|
AUTHOR......: David Rowe
|
|
DATE CREATED: 21 August 2010
|
|
|
|
Codec 2 fully quantised encoder and decoder functions. If you want use
|
|
Codec 2, these are the functions you need to call.
|
|
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
/*
|
|
Copyright (C) 2010 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__
|
|
#define __CODEC2__
|
|
|
|
#include <complex>
|
|
|
|
#include "codec2_internal.h"
|
|
#include "defines.h"
|
|
#include "kiss_fft.h"
|
|
#include "nlp.h"
|
|
#include "quantise.h"
|
|
|
|
#define CODEC2_MODE_3200 0
|
|
#define CODEC2_MODE_1600 2
|
|
|
|
#ifndef CODEC2_MODE_EN_DEFAULT
|
|
#define CODEC2_MODE_EN_DEFAULT 1
|
|
#endif
|
|
|
|
#define CODEC2_RAND_MAX 32767
|
|
|
|
class CCodec2
|
|
{
|
|
public:
|
|
CCodec2(bool is_3200);
|
|
~CCodec2();
|
|
void codec2_encode(unsigned char *bits, const short *speech_in);
|
|
void codec2_decode(short *speech_out, const unsigned char *bits);
|
|
void codec2_set_mode(bool);
|
|
bool codec2_get_mode() {return (c2.mode == 3200); };
|
|
int codec2_samples_per_frame();
|
|
int codec2_bits_per_frame();
|
|
|
|
private:
|
|
// merged from other files
|
|
void sample_phase(MODEL *model, std::complex<float> filter_phase[], std::complex<float> A[]);
|
|
void phase_synth_zero_order(int n_samp, MODEL *model, float *ex_phase, std::complex<float> filter_phase[]);
|
|
void postfilter(MODEL *model, float *bg_est);
|
|
|
|
C2CONST c2const_create(int Fs, float framelength_ms);
|
|
|
|
void make_analysis_window(C2CONST *c2const, FFT_STATE *fft_fwd_cfg, float w[], float W[]);
|
|
void dft_speech(C2CONST *c2const, FFT_STATE &fft_fwd_cfg, std::complex<float> Sw[], float Sn[], float w[]);
|
|
void two_stage_pitch_refinement(C2CONST *c2const, MODEL *model, std::complex<float> Sw[]);
|
|
void estimate_amplitudes(MODEL *model, std::complex<float> Sw[], int est_phase);
|
|
float est_voicing_mbe(C2CONST *c2const, MODEL *model, std::complex<float> Sw[], float W[]);
|
|
void make_synthesis_window(C2CONST *c2const, float Pn[]);
|
|
void synthesise(int n_samp, FFTR_STATE *fftr_inv_cfg, float Sn_[], MODEL *model, float Pn[], int shift);
|
|
int codec2_rand(void);
|
|
void hs_pitch_refinement(MODEL *model, std::complex<float> Sw[], float pmin, float pmax, float pstep);
|
|
|
|
void interp_Wo(MODEL *interp, MODEL *prev, MODEL *next, float Wo_min);
|
|
void interp_Wo2(MODEL *interp, MODEL *prev, MODEL *next, float weight, float Wo_min);
|
|
float interp_energy(float prev, float next);
|
|
void interpolate_lsp_ver2(float interp[], float prev[], float next[], float weight, int order);
|
|
|
|
void analyse_one_frame(MODEL *model, const short *speech);
|
|
void synthesise_one_frame(short speech[], MODEL *model, std::complex<float> Aw[], float gain);
|
|
void codec2_encode_3200(unsigned char *bits, const short *speech);
|
|
void codec2_encode_1600(unsigned char *bits, const short *speech);
|
|
void codec2_decode_3200(short *speech, const unsigned char *bits);
|
|
void codec2_decode_1600(short *speech, const unsigned char *bits);
|
|
void ear_protection(float in_out[], int n);
|
|
void lsp_to_lpc(float *freq, float *ak, int lpcrdr);
|
|
|
|
void (CCodec2::*encode)(unsigned char *bits, const short *speech);
|
|
void (CCodec2::*decode)(short *speech, const unsigned char *bits);
|
|
Cnlp nlp;
|
|
CQuantize qt;
|
|
CODEC2 c2;
|
|
};
|
|
|
|
#endif
|