shallow zip-file copy from codec2 e9d726bf20

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diff --git a/src/newamp2.h b/src/newamp2.h
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+/*---------------------------------------------------------------------------*\
+
+  FILE........: newamp2.h
+  AUTHOR......: Thomas Kurin and Stefan Erhardt
+  INSTITUTE...:	Institute for Electronics Engineering, University of Erlangen-Nuremberg
+  DATE CREATED: July 2018
+  BASED ON....:	"newamp1.h" by David Rowe
+
+  Quantisation functions for the sinusoidal coder, using "newamp1"
+  algorithm that resamples variable rate L [Am} to a fixed rate K then
+  VQs.
+
+\*---------------------------------------------------------------------------*/
+
+/*
+  Copyright Thomas Kurin and Stefan Erhardt 2018
+
+  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 __NEWAMP2__
+#define __NEWAMP2__
+
+#define NEWAMP2_N_INDEXES    4  /* Number of indexes to pack: vq1, vq2, energy, Wo */
+#define NEWAMP2_PHASE_NFFT 128  /* size of FFT used for phase synthesis            */
+#define NEWAMP2_K           29  /* rate K vector length							   */
+#define NEWAMP2_16K_K       40  /* rate K vector length	for 16k Mode			   */                    
+
+#include "codec2_fft.h"
+#include "comp.h"
+
+void n2_mel_sample_freqs_kHz(float rate_K_sample_freqs_kHz[], int K);
+void n2_resample_const_rate_f(C2CONST *c2const, MODEL *model, float rate_K_vec[], float rate_K_sample_freqs_kHz[], int K);
+void n2_rate_K_mbest_encode(int *indexes, float *x, float *xq, int ndim);
+void n2_resample_rate_L(C2CONST *c2const, MODEL *model, float rate_K_vec[], float rate_K_sample_freqs_kHz[], int K,int plosive_flag);
+void n2_post_filter_newamp2(float vec[], float sample_freq_kHz[], int K, float pf_gain);
+void newamp2_interpolate(float interpolated_surface_[], float left_vec[], float right_vec[], int K,int plosive_flag);
+void newamp2_model_to_indexes(C2CONST *c2const,
+                              int    indexes[], 
+                              MODEL *model, 
+                              float  rate_K_vec[], 
+                              float  rate_K_sample_freqs_kHz[], 
+                              int    K,
+                              float *mean,
+                              float  rate_K_vec_no_mean[], 
+                              float  rate_K_vec_no_mean_[],
+                              int	 plosiv
+                              );
+void newamp2_indexes_to_rate_K_vec(float  rate_K_vec_[],  
+                                   float  rate_K_vec_no_mean_[],
+                                   float  rate_K_sample_freqs_kHz[], 
+                                   int    K,
+                                   float *mean_,
+                                   int    indexes[],
+                                   float  pf_gain);
+void newamp2_16k_indexes_to_rate_K_vec(float  rate_K_vec_[],  
+                                   float  rate_K_vec_no_mean_[],
+                                   float  rate_K_sample_freqs_kHz[], 
+                                   int    K,
+                                   float *mean_,
+                                   int    indexes[],
+                                   float  pf_gain);
+void newamp2_indexes_to_model(C2CONST *c2const,
+                              MODEL  model_[],
+                              COMP   H[],
+                              float  interpolated_surface_[],
+                              float  prev_rate_K_vec_[],
+                              float  *Wo_left,
+                              int    *voicing_left,
+                              float  rate_K_sample_freqs_kHz[], 
+                              int    K,
+                              codec2_fft_cfg fwd_cfg, 
+                              codec2_fft_cfg inv_cfg,
+                              int    indexes[],
+                              float  pf_gain,
+                              int flag16k);
+
+#endif