jamie@57: /* libxtract feature extraction library
jamie@57:  *  
jamie@57:  * Copyright (C) 2006 Jamie Bullock
jamie@57:  *
jamie@57:  * This program is free software; you can redistribute it and/or modify
jamie@57:  * it under the terms of the GNU General Public License as published by
jamie@57:  * the Free Software Foundation; either version 2 of the License, or
jamie@57:  * (at your option) any later version.
jamie@57:  *
jamie@57:  * This program is distributed in the hope that it will be useful,
jamie@57:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jamie@57:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jamie@57:  * GNU General Public License for more details.
jamie@57:  *
jamie@57:  * You should have received a copy of the GNU General Public License
jamie@57:  * along with this program; if not, write to the Free Software
jamie@57:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
jamie@57:  * USA.
jamie@57:  */
jamie@57: 
jamie@57: /** \file xtract_macros_private.h: defines useful internal macros */
jamie@57: 
jamie@57: #ifndef XTRACT_MACROS_PRIVATE_H
jamie@57: #define XTRACT_MACROS_PRIVATE_H
jamie@57: 
jamie@57: #include <stdio.h>
jamie@57: 
jamie@57: #define XTRACT_SQ(a) ((a) * (a))
jamie@57: #define XTRACT_MIN(a, b) ((a) < (b) ? (a) : (b))
jamie@57: #define XTRACT_MAX(a, b) ((a) > (b) ? (a) : (b))
jamie@57: #define XTRACT_NEEDS_FFTW printf("LibXtract must be compiled with fftw support to use this function.\n")
jamie@57: #define XTRACT_VERY_SMALL_NUMBER 2e-42
jamie@57: #define XTRACT_LOG_LIMIT XTRACT_VERY_SMALL_NUMBER
jamie@73: #define XTRACT_LOG_LIMIT_DB -96.0
jamie@73: #define XTRACT_DB_SCALE_OFFSET 96.0
jamie@57: #define XTRACT_VERY_BIG_NUMBER 2e42
jamie@73: #define XTRACT_SR_UPPER_LIMIT 192000.0
jamie@73: #define XTRACT_SR_LOWER_LIMIT 22050.0
jamie@73: #define XTRACT_SR_DEFAULT 44100.0
jamie@73: #define XTRACT_FUNDAMENTAL_DEFAULT 440.0
jamie@57: #define XTRACT_CHECK_nyquist if(!nyquist) nyquist = XTRACT_SR_DEFAULT / 2
jamie@57: #define XTRACT_CHECK_q if(!q) q = XTRACT_SR_DEFAULT / N
jamie@120: #define XTRACT_GET_MAX max = result[m] > max ? result[m] : max
jamie@120: #define XTRACT_SET_FREQUENCY result[M + m] = n * q
jamie@59: #define XTRACT_IS_ODD(x) (x % 2 != 0 ? 1 : 0) 
jamie@57: #define XTRACT_SR_LIMIT SR_UPPER_LIMIT
jamie@57: #define XTRACT_FFT_BANDS_MIN 16
jamie@57: #define XTRACT_FFT_BANDS_MAX 65536
jamie@57: #define XTRACT_FFT_BANDS_DEF 1024
jamie@57: #define XTRACT_SPEC_BW_MIN 0.168 /* Minimum spectral bandwidth \
jamie@57: 				    (= SR_LOWER_LIMIT / FFT_BANDS_MAX*/ 
jamie@73: #define XTRACT_SPEC_BW_MAX 12000.0 /* SR_UPPER_LIMIT / FFT_BANDS_MIN */
jamie@57: #define XTRACT_SPEC_BW_DEF 43.066 /* SR_DEFAULT / FFT_BANDS_DEF */
jamie@98: #define XTRACT_ARRAY_ELEMENTS(_array) (sizeof(_array)/sizeof(_array[0]))
jamie@57: 
jamie@57: #endif