Working codec2 support

libs/libcodec2/src/defines.h

@@ -0,0 +1,84 @@
+/*---------------------------------------------------------------------------*\
+
+  FILE........: defines.h                                                     
+  AUTHOR......: David Rowe                                                          
+  DATE CREATED: 23/4/93                                                       
+                                                                             
+  Defines and structures used throughout the codec.			     
+                                                                             
+\*---------------------------------------------------------------------------*/
+
+/*
+  Copyright (C) 2009 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, write to the Free Software
+  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#ifndef __DEFINES__
+#define __DEFINES__
+
+/*---------------------------------------------------------------------------*\
+                                                                             
+				DEFINES                                       
+                                                                             
+\*---------------------------------------------------------------------------*/
+
+/* General defines */
+
+#define N          80		/* number of samples per frame          */
+#define MAX_AMP    80		/* maximum number of harmonics          */
+#define PI         3.141592654	/* mathematical constant                */
+#define TWO_PI     6.283185307	/* mathematical constant                */
+#define FS         8000		/* sample rate in Hz                    */
+#define MAX_STR    256          /* maximum string size                  */
+
+#define NW         279          /* analysis window size                 */
+#define FFT_ENC    512		/* size of FFT used for encoder         */
+#define FFT_DEC    512	    	/* size of FFT used in decoder          */
+#define TW         40		/* Trapezoidal synthesis window overlap */
+#define V_THRESH   4.0          /* voicing threshold in dB              */
+#define LPC_MAX    20		/* maximum LPC order                    */
+#define LPC_ORD    10		/* phase modelling LPC order            */
+
+/* Pitch estimation defines */
+
+#define M        320		/* pitch analysis frame size            */
+#define P_MIN    20		/* minimum pitch                        */
+#define P_MAX    160		/* maximum pitch                        */
+
+/*---------------------------------------------------------------------------*\
+                                                                             
+				TYPEDEFS                                      
+                                                                             
+\*---------------------------------------------------------------------------*/
+
+/* Complex number */
+
+typedef struct {
+  float real;
+  float imag;
+} COMP;
+
+/* Structure to hold model parameters for one frame */
+
+typedef struct {
+  float Wo;		/* fundamental frequency estimate in radians  */
+  int   L;		/* number of harmonics                        */
+  float A[MAX_AMP];	/* amplitiude of each harmonic                */
+  float phi[MAX_AMP];	/* phase of each harmonic                     */
+  int   voiced;	        /* non-zero if this frame is voiced           */
+} MODEL;
+
+#endif