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1 /*
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2 ** Copyright (C) 2002-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
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3 **
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4 ** This program is free software; you can redistribute it and/or modify
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5 ** it under the terms of the GNU General Public License as published by
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6 ** the Free Software Foundation; either version 2 of the License, or
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7 ** (at your option) any later version.
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8 **
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9 ** This program is distributed in the hope that it will be useful,
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10 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ** GNU General Public License for more details.
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13 **
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14 ** You should have received a copy of the GNU General Public License
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15 ** along with this program; if not, write to the Free Software
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16 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
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17 */
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18
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19 #define ABS(a) (((a) < 0) ? - (a) : (a))
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20 #define MIN(a,b) (((a) < (b)) ? (a) : (b))
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21 #define MAX(a,b) (((a) >= (b)) ? (a) : (b))
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22
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23 #define ARRAY_LEN(x) ((int) (sizeof (x) / sizeof ((x) [0])))
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24
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25 void gen_windowed_sines (int freq_count, const double *freqs, double max, float *output, int output_len) ;
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26
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27 void save_oct_float (char *filename, float *input, int in_len, float *output, int out_len) ;
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28 void save_oct_double (char *filename, double *input, int in_len, double *output, int out_len) ;
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29
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30 void interleave_data (const float *in, float *out, int frames, int channels) ;
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31
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32 void deinterleave_data (const float *in, float *out, int frames, int channels) ;
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33
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34 void reverse_data (float *data, int datalen) ;
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35
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36 double calculate_snr (float *data, int len, int expected_peaks) ;
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37
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38 const char * get_cpu_name (void) ;
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39
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40 #if OS_IS_WIN32
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41 /*
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42 ** Extra Win32 hacks.
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43 **
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44 ** Despite Microsoft claim of windows being POSIX compatibile it has '_sleep'
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45 ** instead of 'sleep'.
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46 */
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47
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48 #define sleep _sleep
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49 #endif
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50
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