Last change
on this file since 103131 was 96468, checked in by vboxsync, 2 years ago |
libs/libvorbis-1.3.7: Re-exporting, hopefully this time everything is there. bugref:10275
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File size:
1.6 KB
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1 | /********************************************************************
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2 | * *
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3 | * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
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4 | * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
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5 | * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
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6 | * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
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7 | * *
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8 | * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 *
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9 | * by the Xiph.Org Foundation https://xiph.org/ *
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10 | * *
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11 | ********************************************************************
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12 |
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13 | function: utility functions for vorbis codec test suite.
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14 |
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15 | ********************************************************************/
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16 |
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17 | #include <stdio.h>
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18 | #include <stdlib.h>
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19 | #include <math.h>
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20 | #include <string.h>
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21 | #include <errno.h>
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22 |
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23 | #include <vorbis/codec.h>
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24 | #include <vorbis/vorbisenc.h>
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25 |
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26 | #include "util.h"
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27 |
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28 | void
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29 | gen_windowed_sine (float *data, int len, float maximum)
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30 | { int k ;
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31 |
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32 | memset (data, 0, len * sizeof (float)) ;
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33 |
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34 | len /= 2 ;
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35 |
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36 | for (k = 0 ; k < len ; k++)
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37 | { data [k] = sin (2.0 * k * M_PI * 1.0 / 32.0 + 0.4) ;
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38 |
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39 | /* Apply Hanning Window. */
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40 | data [k] *= maximum * (0.5 - 0.5 * cos (2.0 * M_PI * k / ((len) - 1))) ;
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41 | }
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42 |
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43 | return ;
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44 | }
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45 |
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46 | void
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47 | set_data_in (float * data, unsigned len, float value)
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48 | { unsigned k ;
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49 |
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50 | for (k = 0 ; k < len ; k++)
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51 | data [k] = value ;
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52 | }
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